CN201162244Y - Stainless steel non-negative pressure water supply equipment - Google Patents

Abstract

The utility model relates to stainless steel non-negative pressure water supplying equipment, which is composed of a municipal pipe network, an automatic pressure maintaining stainless steel pressure tank, a pressure tank outlet valve, pressure sensors, pipeline systems, a main pipe network, a user pipe network and a variable frequency control cabinet. The municipal pipe network is connected with the automatic pressure maintaining stainless steel pressure tank, the automatic pressure maintaining stainless steel pressure tank is connected with the pressure tank outlet valve, the pressure tank outlet valve is connected with the pipeline systems, the pipeline systems are connected into the main pipe network, pressure sensors are arranged at the water outlet end of the pressure tank outlet valve, the main pipe network and the user pipe network, and the pressure sensors are connected with the variable frequency control cabinet. Because optimization design is performed to the structure of the water supplying equipment, an original stainless steel non-negative pressure tank and an original air pressure buffer tank are combined into an automatic pressure maintaining stainless steel pressure tank, the manufacturing cost is greatly reduced, the structure is more simple and reasonable, the maintenance and the reparation are convenient, the problems that the prior water supplying equipment structure is complex and crowded and the water secondary pollution is easy to occur are solved, and the purpose of energy saving can be achieved.

Description

Stainless steel non-negative pressure water supply equipment

technical field

The utility model relates to a stainless steel non-negative pressure water supply equipment, which belongs to the technical field of water supply equipment.

Background technique

For stainless steel non-negative pressure water supply equipment, its pressure maintaining method and prevention of secondary pollution of water are very important. At present, the conventional stainless steel non-negative pressure water supply equipment has a structure including stainless steel tank, hydraulic float valve, water pump, stack valve, It is composed of check valve, pipeline, pressure stabilizing tank, etc. During the working process of water supply equipment, when the pressure of the municipal pipe network is lower than the atmospheric pressure, the hydraulic float valve works to make the air enter the stainless steel tank and contact with water to balance the pressure in the stainless steel tank , so as not to form a negative pressure inside, so that the water will form secondary pollution, and in order to achieve the pressure stabilization function of the water supply equipment, a pressure stabilizing tank is installed at the main water outlet of the water supply equipment, which makes the structure of the water supply equipment complex and Crowded, inconvenient for maintenance and repair of water supply equipment.

Contents of the invention

The purpose of this utility model is to provide a new type of stainless steel non-negative pressure water supply equipment. The structure of the water supply equipment has been improved and designed to avoid secondary pollution of water. The water supply equipment consists of a stainless steel non-negative pressure tank and an air pressure stabilizer. Pressure tank, the optimal design is combined into an automatic pressure-holding stainless steel pressure tank, which greatly reduces the manufacturing cost, the structure is more simplified and reasonable, and the maintenance and repair are extremely convenient. And can achieve the purpose of energy saving.

In order to achieve the above object, the technical solution of the utility model is: stainless steel non-negative pressure water supply equipment, consisting of: municipal pipe network (1), automatic pressure maintaining stainless steel pressure tank (2), pressure tank outlet valve (3), pressure sensor P1(4), pipeline system one (5), pipeline system two (6), pipeline system three (7), pipeline system four (8), pipeline system five (9), main pipeline network (10) , user pipe network (11), pressure sensor P2 (12), and frequency conversion control cabinet (13), the municipal pipe network (1) is connected with the automatic pressure-holding stainless steel pressure tank (2), and the automatic pressure-holding stainless steel pressure tank (2) ) is connected with the water inlet end of the pressure tank outlet valve (3), and the water outlet end of the pressure tank outlet valve (3) is connected with the pipeline system one (5), pipeline system two (6), pipeline system three (7) The water inlets of the three are connected, and the water outlets of pipeline system one (5), pipeline system two (6), and pipeline system three (7) are connected into a general pipe network (10), and the general pipe network (10) is connected to the user The pipe network (11) is connected, the outlet valve (3) of the pressure tank is provided with a pressure sensor P1 (4), and the main pipe network (10) and the user pipe network (11) are provided with a pressure sensor P2 (12). The negative pressure water supply equipment is equipped with automatic pressure maintaining stainless steel pressure tank (2), pipeline system one (5), pipeline system two (6), pipeline system three (7), pipeline system five (8), pipe Road system five (9) and frequency conversion control cabinet (13), water chamber two (25) water inlet in the automatic pressure-holding stainless steel pressure tank (2) is connected with the municipal pipe network (1), and the automatic pressure-holding stainless steel pressure tank ( 2) The water outlet of the water chamber 2 (25) is connected with the pipeline system 1 (5), pipeline system 2 (6) and pipeline system 3 (7) through the outlet valve (3) of the pressure tank, and the pipeline system One (5), pipeline system two (6), pipeline system three (7) are connected in parallel, pipeline system one (5) is connected with pipeline system five (9), and pipeline system three (7) ) is connected with pipeline system four (8), and the frequency conversion control cabinet (13) is connected with pressure sensor P1 (4) and pressure sensor P2 (12).

The automatic pressure-holding stainless steel pressure tank (2) consists of: pressure balance valve (21), pressure gauge one (22), pressure gauge two (23), water chamber one (24), water chamber two (25), water chamber three ( 26), water chamber one (24) is composed of: nitrogen chamber one (241), capsule one (242), water chamber two (25) is composed of: capsule two (251), air chamber (252), water chamber three (26) consists of two nitrogen chambers (261) and three capsules (262). The first water chamber (24) and the third water chamber (26) of the automatic pressure-holding stainless steel pressure tank (2) are all composed of stainless steel tanks and capsules. And formed a sealed space, is filled with the same water-insoluble inert gas of user's water pressure in this space, and gas pressure is controlled by pressure gauge one (22), pressure gauge two (23), and water cavity one (24), Water chamber three (26) are two energy storage chambers consistent with water pump one (52) and water pump two (72) outlet pressures, water chamber two (25) is combined by stainless steel tank and capsule, and water chamber two (25) is made of stainless steel A pressure balance valve (21) is housed outside the tank to form a water chamber two (25) that is always balanced with atmospheric pressure. Water chamber one (24), water chamber two (25), and water chamber three (26) are installed in in a stainless steel tank.

Piping system one (5) is made up of: valve one (51), water pump one (52), check valve one (53), valve two (54) and pipeline, and valve one (51) is contained in water pump one (52) Inlet, pump one (52) outlet is equipped with a check valve one (53) and then a valve two (54) is connected in series, and the water outlet end of the pipeline system one (5) is provided with a pipeline system five (9), and the pipeline system Five (9) flanges of the water outlet end of the connection pipeline system one (5) and the water cavity one (24) in the automatic pressure-holding stainless steel pressure tank (2).

The pipeline system two (6) is composed of two check valves (61), three valves (62) and pipelines, and the two check valves (61) and three valves (62) are connected in series.

Piping system three (7) consists of: valve four (71), water pump two (72), check valve three (73), valve five (74) and pipelines, valve four (71) is installed in water pump two (72) A check valve three (73) is installed at the inlet and outlet of the water pump two (72), and a valve five (74) is connected in series, and the water outlet of the pipeline system three (7) is provided with a pipeline system five (8), and the pipeline system Five (8) flanges of the outlet end of the connection pipeline system one (7) and the water chamber three (26) in the automatic pressure-holding stainless steel pressure tank (2).

The water outlets of piping system one (5), piping system two (6) and piping system three (7) are connected to the main pipe network (10) in parallel, and the main pipe network (10) is equipped with a pressure sensor P2 (12 ), the other end pipelines of pipeline system one (5), pipeline system two (6) and pipeline system three (7) are connected to the water outlet pipeline at the lower end of the automatic pressure-holding stainless steel pressure tank (2). A pressure tank outlet valve (3) and a pressure sensor P1 (4) are installed on the road, and the pressure sensor P1 (4) and the pressure sensor P2 (12) are connected with the frequency conversion control cabinet (13) through sensing lines.

Piping system four (8) is composed of: valve six (81) and pipelines. In stainless steel non-negative pressure water supply equipment, the main pipe network (10) passes through pipeline system four (8), and valve six (81) passes through pipelines to In the automatic pressure-holding stainless steel pressure tank (2), it is connected with the flange of water chamber three (26) and communicates with water chamber three (26).

Piping system five (9) is composed of valve seven (91) and pipelines. In the stainless steel non-negative pressure water supply equipment, the main pipe network (10) passes through pipeline system five (9), and valve seven (91) passes through pipelines to In the automatic pressure-holding stainless steel pressure tank (2), it is connected with the flange of water chamber one (24) and communicates with water chamber one (24).

During the working process of the stainless steel non-negative pressure water supply equipment, when the pressure of the municipal pipe network is lower than the atmospheric pressure, the pressure balance valve automatically balances the air pressure between the water cavity capsule and the stainless steel pressure tank to balance the atmosphere, without generating negative pressure, and avoiding The air is in contact with the water, and the water pump is working at the same time. Its working pressure is supplemented by the pipeline to the water chambers at both ends of the automatic pressure-holding stainless steel pressure tank, so that when the water pump stops working, the user can supply a small amount of water by it, thus also achieving the goal of the water pump not working. The purpose of energy saving while working.

Description of drawings

Fig. 1 is a structural schematic diagram of the stainless steel non-negative pressure water supply equipment of the present invention.

In Figure 1: 1. Municipal pipe network 2. Automatic pressure-holding stainless steel pressure tank 3. Pressure tank outlet valve

4. Pressure sensor P1 5. Piping system 1 6. Piping system 2

7. Piping system three 8. Piping system four 9. Piping system five

10. Main pipe network 11. User pipe network 12. Pressure sensor P2

13. Frequency conversion control cabinet

21. Pressure balance valve 22. Pressure gauge one 23. Pressure gauge two

24. Water Chamber 1 25. Water Chamber 2 26. Water Chamber 3

241. Nitrogen chamber 1 242. Capsule 1

251. Capsule 2 252. Air cavity

261. Nitrogen chamber 2 262. Capsule 3

51. Valve 1 52. Pump 1 53. Check valve 1 54. Valve 2

61. Check valve two 62. Valve three

71. Valve four 72. Water pump two 73. Check valve three 74. Valve five

81. Valve six 91. Valve seven

Detailed ways

As shown in Figure 1, this is a structural schematic diagram of the stainless steel non-negative pressure water supply equipment of the present invention.

Stainless steel non-negative pressure water supply equipment consists of municipal pipe network (1), automatic pressure-holding stainless steel pressure tank (2), pressure tank outlet valve (3), pressure sensor P1 (4), pipeline system one (5), pipeline System two (6), pipeline system three (7), pipeline system four (8), pipeline system five (9), main pipe network (10), user pipe network (11), pressure sensor P2 (12), The frequency conversion control cabinet (13) is formed.

Automatic pressure-holding stainless steel pressure tank (2), consisting of: pressure balance valve (21), pressure gauge one (22), pressure gauge two (23), water chamber one (24), water chamber two (25), water chamber three (26) COMPOSITION.

Water chamber one (24) is made up of: nitrogen chamber one (241), capsule one (242).

Water cavity two (25) is made up of: capsule two (251), air cavity (252).

Water chamber three (26) is made up of: nitrogen chamber two (261), capsule three (262).

Piping system one (5) is composed of valve one (51), water pump one (52), check valve one (53), valve two (54) and pipelines.

Piping system two (6) is made up of: check valve two (61), valve three (62) and pipelines.

Pipeline system three (7), is made up of: valve four (71), water pump two (72), check valve three (73), valve five (74) and pipeline.

Piping system four (8), is made up of: valve six (81) and pipeline.

Piping system five (9), is made up of: valve seven (91) and pipeline.

The municipal pipe network (1) is connected with the automatic pressure-holding stainless steel pressure tank (2), the automatic pressure-holding stainless steel pressure tank (2) is connected with the water inlet of the pressure tank outlet valve (3), and the pressure tank outlet valve (3) The water outlet of the pipeline system is connected with the water inlet of pipeline system one (5), pipeline system two (6), pipeline system three (7), pipeline system one (5), pipeline system two (6), The water outlets of the pipeline system three (7) are connected into a general pipe network (10), the general pipe network (10) is connected with the user pipe network (11), and the water outlet of the pressure tank outlet valve (3) is provided with a pressure sensor P1 ( 4), the main pipe network (10) and the user pipe network (11) are provided with a pressure sensor P2 (12), and the stainless steel non-negative pressure water supply equipment is provided with an automatic pressure maintaining stainless steel pressure tank (2), a pipeline system (5 ), pipeline system two (6), pipeline system three (7), pipeline system five (8), pipeline system five (9) and frequency conversion control cabinet (13), automatic pressure-holding stainless steel pressure tank (2) The water inlet of the water chamber two (25) in the water chamber is connected with the municipal pipe network (1), and the water outlet of the water chamber two (25) in the automatic pressure-holding stainless steel pressure tank (2) passes through the pressure tank outlet valve (3) and the pipe Pipeline system one (5), pipeline system two (6), pipeline system three (7) connection, pipeline system one (5), pipeline system two (6), pipeline system three (7) three systems They are connected in parallel, pipeline system one (5) is connected with pipeline system five (9), pipeline system three (7) is connected with pipeline system four (8), frequency conversion control cabinet (13) is connected with pressure sensor P1 (4 ), the pressure sensor P2 (12) is connected.

The automatic pressure-holding stainless steel pressure tank (2) consists of: pressure balance valve (21), pressure gauge one (22), pressure gauge two (23), water chamber one (24), water chamber two (25), water chamber three ( 26), water chamber one (24) is composed of: nitrogen chamber one (241), capsule one (242), water chamber two (25) is composed of: capsule two (251), air chamber (252), water chamber three (26) consists of two nitrogen chambers (261) and three capsules (262). The first water chamber (24) and the third water chamber (26) of the automatic pressure-holding stainless steel pressure tank (2) are all composed of stainless steel tanks and capsules. And formed a sealed space, is filled with the same water-insoluble inert gas of user's water pressure in this space, and gas pressure is controlled by pressure gauge one (22), pressure gauge two (23), and water cavity one (24), Water chamber three (26) are two energy storage chambers consistent with water pump one (52) and water pump two (72) outlet pressures, water chamber two (25) is combined by stainless steel tank and capsule, and water chamber two (25) is made of stainless steel A pressure balance valve (21) is housed outside the tank to form a water chamber two (25) that is always balanced with atmospheric pressure. Water chamber one (24), water chamber two (25), and water chamber three (26) are installed in in a stainless steel tank.

Piping system one (5) is made up of: valve one (51), water pump one (52), check valve one (53), valve two (54) and pipeline, and valve one (51) is contained in water pump one (52) Inlet, pump one (52) outlet is equipped with a check valve one (53) and then a valve two (54) is connected in series, and the water outlet end of the pipeline system one (5) is provided with a pipeline system five (9), and the pipeline system Five (9) flanges of the water outlet end of the connection pipeline system one (5) and the water cavity one (24) in the automatic pressure-holding stainless steel pressure tank (2).

The pipeline system two (6) is composed of two check valves (61), three valves (62) and pipelines, and the two check valves (61) and three valves (62) are connected in series.

Piping system three (7) consists of: valve four (71), water pump two (72), check valve three (73), valve five (74) and pipelines, valve four (71) is installed in water pump two (72) A check valve three (73) is installed at the inlet and outlet of the water pump two (72), and a valve five (74) is connected in series, and the water outlet of the pipeline system three (7) is provided with a pipeline system five (8), and the pipeline system Five (8) flanges of the outlet end of the connection pipeline system one (7) and the water chamber three (26) in the automatic pressure-holding stainless steel pressure tank (2).

The water outlets of piping system one (5), piping system two (6) and piping system three (7) are connected to the main pipe network (10) in parallel, and the main pipe network (10) is equipped with a pressure sensor P2 (12 ), the other end pipelines of pipeline system one (5), pipeline system two (6) and pipeline system three (7) are connected to the water outlet pipeline at the lower end of the automatic pressure-holding stainless steel pressure tank (2). A pressure tank outlet valve (3) and a pressure sensor P1 (4) are installed on the road, and the pressure sensor P1 (4) and the pressure sensor P2 (12) are connected with the frequency conversion control cabinet (13) through sensing lines.

Piping system four (8) is composed of: valve six (81) and pipelines. In stainless steel non-negative pressure water supply equipment, the main pipe network (10) passes through pipeline system four (8), and valve six (81) passes through pipelines to In the automatic pressure-holding stainless steel pressure tank (2), it is connected with the flange of water chamber three (26) and communicates with water chamber three (26).

Piping system five (9) is composed of valve seven (91) and pipelines. In the stainless steel non-negative pressure water supply equipment, the main pipe network (10) passes through pipeline system five (9), and valve seven (91) passes through pipelines to In the automatic pressure-holding stainless steel pressure tank (2), it is connected with the flange of water chamber one (24) and communicates with water chamber one (24).

The first water chamber (24) and the third water chamber (26) of the automatic pressure-holding stainless steel pressure tank (2) are combined by a stainless steel tank and a capsule, and form a sealed space, which is filled with insoluble water with the same water pressure as the user. As for the inert gas in water, the gas pressure is monitored by pressure gauge one (22) and pressure gauge two (23). In the water supply equipment, the main pipe network (10) is connected to the water chamber one (24) and the water chamber three (26) of the automatic pressure-holding stainless steel pressure tank (2) through the pipe system four (8) and an additional stack valve. The flanges at both ends communicate with the two water chambers respectively.

The pipeline system one (5) and pipeline system three (7) in the water supply equipment structure are respectively composed of two stack valves, a check valve, a water pump and stainless steel pipes, etc., and a stack valve is installed at the inlet of the water pump, and the water pump A check valve is installed at the outlet and a stack valve is connected in series. The pipeline system two (6) is composed of a stack valve, a check valve and stainless steel pipes. The pipeline system one (5) and the pipeline system three (7) are The pipes at the outlet of the water pump and the overlapping valve of piping system 2 (6) are connected to the main pipe network (10), while piping system 1 (5), piping system 3 (7) and piping system 2 (6) The other end of the pipeline is connected to the water outlet pipeline at the lower end of the automatic pressure-holding stainless steel pressure tank (2). The pipeline is equipped with a stack valve and pressure sensor P1 (4), and the other end is equipped with a pressure sensor P2 (12 ), two pressure sensors are connected with the frequency conversion control cabinet (13).

The automatic pressure-holding stainless steel pressure tank (2) in the water supply equipment is divided into three water cavities, and there are capsules in the three water cavities, so that the water is not in contact with the air and prevents secondary pollution of the water. The capsule water cavity with pressure-insoluble inert gas is located at both ends of the automatic pressure-holding stainless steel pressure tank (2), and the other stainless steel tank is equipped with a pressure balance valve (21), and the capsule water cavity is located at the automatic pressure-holding stainless steel pressure tank (2). ), during the working process of the water supply equipment, when the pressure of the municipal pipe network (1) is lower than the atmospheric pressure, the pressure balance valve (21) automatically balances the gap between the capsule two (251) in the water chamber two (25) and the stainless steel pressure tank The air pressure in the air cavity (252) between the two pumps is balanced with the atmosphere without negative pressure, and avoids contact between air and water. At the same time, the two water pumps work, and their working pressure passes through the pipeline system four (8), pipeline system five ( 9) Supplement the pressure on the two water chambers one (24) and three (26) in the automatic pressure-holding stainless steel pressure tank (2), so that when the two water pumps stop working, the user will supply a small amount of water from them, so as to reach the water pump. For the purpose of saving energy without working, due to the unique structure of the automatic pressure-holding stainless steel pressure tank (2), the stainless steel non-negative pressure water supply equipment will never generate negative pressure when it is working, avoiding the secondary pollution of water caused by air and water contact, The structure is more simplified, compact and reasonable, the maintenance and repair are extremely convenient, and the manufacturing cost is greatly reduced.

Although the utility model has been described with reference to the above-mentioned examples, those skilled in the art should recognize that the above embodiments are only used to illustrate the utility model, and it should be understood that various changes and modifications can be made therein. In a broad sense, it does not deviate from the utility model, so it is not intended as a limitation to the utility model, as long as it is within the spirit of the utility model, changes and deformations to the above-mentioned embodiments are included in the scope of protection required by the utility model.

Claims (8)

1. A stainless steel non-negative pressure water supply equipment is composed of: municipal pipe network (1), automatic pressure-holding stainless steel pressure tank (2), pressure tank outlet valve (3), pressure sensor P1 (4), a pipeline system (5), pipeline system two (6), pipeline system three (7), pipeline system four (8), pipeline system five (9), main pipe network (10), user pipe network (11), pressure Composed of sensor P2 (12) and frequency conversion control cabinet (13), the municipal pipe network (1) is connected with the automatic pressure-holding stainless steel pressure tank (2), and the automatic pressure-holding stainless steel pressure tank (2) is connected with the outlet valve of the pressure tank (3) The water inlet of the pressure tank outlet valve (3) is connected to the water inlet of the pipeline system 1 (5), pipeline system 2 (6), and pipeline system 3 (7). The water outlets of system one (5), pipeline system two (6), and pipeline system three (7) are connected to form a general pipe network (10), and the general pipe network (10) is connected to the user pipe network (11). The water outlet end of the outlet valve (3) is provided with a pressure sensor P1 (4), and the main pipe network (10) and the user pipe network (11) are provided with a pressure sensor P2 (12), which is characterized in that: stainless steel non-negative pressure water supply equipment There are automatic pressure-holding stainless steel pressure tanks (2), pipeline system one (5), pipeline system two (6), pipeline system three (7), pipeline system five (8), pipeline system five (9 ) and frequency conversion control cabinet (13), the water inlet of the water chamber two (25) in the automatic pressure-holding stainless steel pressure tank (2) is connected with the municipal pipe network (1), and the water in the automatic pressure-holding stainless steel pressure tank (2) The water outlet of cavity two (25) is connected with pipeline system one (5), pipeline system two (6), pipeline system three (7) through pressure tank outlet valve (3), pipeline system one (5), pipeline system one (5), Piping system 2 (6) and piping system 3 (7) are connected in parallel, piping system 1 (5) is connected to piping system 5 (9), piping system 3 (7) is connected to piping system Four (8) connections, the frequency conversion control cabinet (13) is connected with pressure sensor P1 (4), pressure sensor P2 (12). 2. The stainless steel non-negative pressure water supply equipment according to claim 1, characterized in that: the automatic pressure maintaining stainless steel pressure tank (2) consists of: pressure balance valve (21), pressure gauge one (22), pressure gauge two (23 ), water chamber one (24), water chamber two (25), water chamber three (26), water chamber one (24) is made up of: nitrogen chamber one (241), capsule one (242), water chamber two ( 25) consists of two capsules (251) and an air chamber (252), three water chambers (26) consist of two nitrogen chambers (261) and three capsules (262), and the water in the automatic pressure-holding stainless steel pressure tank (2) Chamber one (24) and water chamber three (26) are combined by stainless steel tanks and capsules to form a sealed space, which is filled with water-insoluble inert gas with the same pressure as the user's water pressure, and the gas pressure is determined by the pressure gauge One (22), pressure gauge two (23) control, water chamber one (24), water chamber three (26) are two energy storage chambers consistent with water pump one (52), water pump two (72) outlet pressure, water Chamber two (25) is combined by stainless steel tank and capsule, and the stainless steel tank of water chamber two (25) is equipped with pressure balance valve (21) outside, forms a water chamber two (25) that keeps and atmospheric pressure balance all the time, water chamber one ( 24), water cavity two (25), water cavity three (26) three are installed in the stainless steel tank, the outside of the stainless steel tank is equipped with a pressure balance valve (21), the pressure balance valve (21) automatically balances the water cavity two (25 ) The air pressure of the air chamber (252) between the capsule two (251) and the stainless steel pressure tank is balanced with the atmosphere without negative pressure. 3. The stainless steel non-negative pressure water supply equipment according to claim 1, characterized in that: pipeline system one (5) consists of: valve one (51), water pump one (52), check valve one (53), valve Two (54) and pipelines, valve one (51) is installed in the inlet of water pump one (52), and a check valve one (53) is installed at the outlet of water pump one (52), and then a valve two (54) is connected in series, the pipeline system The water outlet of one (5) is provided with a pipeline system five (9), and the pipeline system five (9) is connected to the water outlet of the pipeline system one (5) and the water chamber one in the automatic pressure-holding stainless steel pressure tank (2). (24) flange. 4. The stainless steel non-negative pressure water supply equipment according to claim 1, characterized in that: the pipeline system two (6) is composed of: check valve two (61), valve three (62) and pipelines, check valve two (61) is connected in series with valve three (62). 5. The stainless steel non-negative pressure water supply equipment according to claim 1, characterized in that: the pipeline system three (7) consists of: valve four (71), water pump two (72), check valve three (73), valve Five (74) and pipelines, valve four (71) is installed in the inlet of water pump two (72), and a check valve three (73) is installed at the outlet of water pump two (72), and then a valve five (74) is connected in series, the pipeline system The water outlet of three (7) is provided with pipeline system five (8), and pipeline system five (8) connects the water outlet of pipeline system one (7) with the water cavity three in the automatic pressure-holding stainless steel pressure tank (2) (26) flange. 6. The stainless steel non-negative pressure water supply equipment according to claim 1, characterized in that the water outlets of pipeline system one (5), pipeline system two (6) and pipeline system three (7) are connected in parallel On the main pipe network (10), the pressure sensor P2 (12) is installed on the main pipe network (10), and the other end pipelines of pipeline system one (5), pipeline system two (6) and pipeline system three (7) And connected to the water outlet pipeline at the lower end of the automatic pressure-holding stainless steel pressure tank (2), which is equipped with a pressure tank outlet valve (3) and pressure sensor P1 (4), pressure sensor P1 (4), pressure sensor P2 (12) Connect with the frequency conversion control cabinet (13) through the sensing line. 7. The stainless steel non-negative pressure water supply equipment according to claim 1, characterized in that: the pipeline system four (8) is composed of valve six (81) and pipelines, and the stainless steel non-negative pressure water supply equipment is composed of the main pipe network (10 ) through the pipeline system four (8), from the valve six (81) through the pipeline to the automatic pressure-holding stainless steel pressure tank (2), connected with the flange of the water chamber three (26) and connected with the water chamber three (26) connected. 8. The stainless steel non-negative pressure water supply equipment according to claim 1, characterized in that: the pipeline system five (9) is composed of valve seven (91) and pipelines, and the stainless steel non-negative pressure water supply equipment is composed of the main pipe network (10 ) through the pipeline system five (9), from the valve seven (91) through the pipeline to the automatic pressure-holding stainless steel pressure tank (2), connected with the flange of the water chamber one (24) and connected with the water chamber one (24) connected.

Images