CN105351139B - A kind of water lines automatic exhaust device - Google Patents

Abstract

The invention discloses an automatic exhaust device for water pipelines, which comprises an upper chamber, a lower chamber, a hemispherical top cover, a sleeve and the outer surface of the top cover of the buoy matching with the curved surface of the bottom opening of the upper chamber; the sleeve It is composed of the upper cylindrical part and the lower conical part, wherein the outer diameter of the cylindrical part is equal to the inner diameter of the upper part of the lower cavity, the top of the outer surface of the sleeve is fixed to the top of the lower cavity, and the conical part of the sleeve is separated There is a water inlet; the buoy is arranged in the sleeve, and the buoy can move up and down in the sleeve, and the bottom of the buoy bends downward to form an arc that can match the water inlet. The beneficial effect of the present invention is: when the buoyancy of water is used to push the top cover to move up and down, the water surface rises and the air in the lower inner cavity is squeezed into the upper inner cavity to be discharged; The cavity is separated, and the opening of the upper inner cavity is opened, thereby solving the technical defect that the reclaimed water pipeline in the prior art cannot be automatically exhausted.

Description

A water pipeline automatic exhaust device

technical field

The invention relates to an automatic exhaust device for a water pipeline.

Background technique

Pumped-storage pump turbine volute is an important part to convert water energy into mechanical energy. During normal operation, the volute should be filled with water. It is necessary to regularly enter the volute for inspection and empty the internal water. When restoring water filling, if Residual gas will reduce the energy conversion efficiency, and at the same time increase the cavitation of the turbine blades, affecting the service life of the pump turbine.

Contents of the invention

The purpose of the present invention is to provide an automatic exhaust device for water pipelines, which solves the technical defect that the water pipelines cannot be automatically exhausted in the prior art.

In order to solve the problems referred to above, the technical scheme that the present invention takes is:

A water pipeline automatic exhaust device, comprising

An upper cavity, an upper cavity is set in the upper cavity, the two ends of the upper cavity run through the bottom surface and the side of the upper cavity respectively, and the bottom opening of the upper cavity is a curved surface; the upper cavity in the upper cavity is used To discharge the air cylinder in the lower chamber, specifically, the air cylinder in the lower chamber enters the upper chamber from the bottom of the upper inner chamber and is discharged from the side of the upper chamber.

A lower cavity, the lower cavity is provided with a lower cavity, the upper and lower ends of the lower cavity respectively penetrate the upper end surface and the lower end surface of the lower cavity, and the diameters of the top and bottom of the lower cavity are smaller than the diameter of the middle part , the upper cavity is installed on the top of the lower cavity and the upper cavity communicates with the lower cavity; most of the other components are installed in the lower cavity, and the air gathers in the lower cavity, and the air is transported from the lower cavity by water The lower inner cavity is pressed into the upper cavity and discharged from the upper cavity.

Hemispherical top cover, the outer surface of the top cover matches the curved surface of the bottom opening of the upper cavity; the top cover moves up and down to open and close the opening of the upper inner cavity, the top cover moves downward, and the upper inner cavity The opening is opened so that the gas in the lower chamber is discharged, the top cover moves upward, and the opening of the upper inner chamber is closed to realize the sealing of the lower chamber.

A sleeve, the sleeve is composed of an upper cylindrical part and a lower circular platform part, wherein the outer diameter of the cylindrical part is equal to the inner diameter of the upper part of the lower cavity, and the top of the outer surface of the sleeve is in contact with the lower cavity The top of the sleeve is fixed, and the circular platform part of the sleeve has a water inlet; the sleeve is used to install the following buoy, and the circular platform part of the lower part of the sleeve makes the water inlet shrink inward, and the diameter of the water inlet is smaller than the diameter of the buoy, which is used to prevent The buoy falls from the sleeve.

The buoy, the buoy is arranged in the sleeve, and the buoy can move up and down in the sleeve, the middle part of the buoy is cylindrical, the upper part is conical, and the bottom is bent downward to form an arc that can match the water inlet Water enters from the water inlet at the bottom of the sleeve. When the water surface rises, the buoy moves upward under the buoyancy of the water, pushing the top cover to move the top cover upward. During the upward movement of the top cover, the air above the water surface is Extruded into the upper inner cavity and discharged from the upper inner cavity, the buoy pushes the top cover until the bottom cover closes the opening of the upper inner cavity; when the water blocking is descending, the buoy moves downward, and the top cover naturally goes down due to gravity movement, thereby opening the opening of the upper lumen, ready for the next expulsion of air.

The invention pushes the buoy and the top cover to move up and down through the encouragement of water, automatically opens and closes the opening of the upper cavity, thereby realizing the purpose of discharging the air in the lower cavity, and solving the technology that the water pipeline in the prior art cannot be automatically exhausted Defects, thereby improving energy conversion efficiency and prolonging the service life of pump turbines.

As a further improvement of the present invention, an annular rubber sealing flange is provided at the installation part of the upper cavity and the lower cavity, and the inner surface of the rubber sealing flange is matched with the outer surface of the top cover Curved surface; a rubber sealing flange is set, and after the top cover moves upward to close the opening of the upper inner cavity, the top cover and the rubber sealing flange are tightly attached together to enhance the overall sealing effect and prevent the The water flows out along the outer surface of the top cover.

As a further improvement of the present invention, a guide rod is provided on the top cover, a guide cylinder is provided in the upper cavity, and the upper part of the guide rod is arranged in the guide cylinder and can move up and down in the guide cylinder; The rod and the guide cylinder are used together to guide the up and down movement of the top cover, preventing the top cover from deflecting or falling off during the displacement process, resulting in seal failure and water in the pipeline flowing out.

As a further improvement of the present invention, the guide cylinder is a bolt, the screw part of the bolt is a hollow structure, the bolt is threadedly connected with the upper cavity, and the upper part of the guide rod is located in the hollow part of the screw rod; The bolt is used as the guide cylinder, because there are threads on the bolt, it is convenient for the connection between the guide cylinder and the upper cavity, and it is only necessary to provide threaded holes on the upper cavity.

As a further improvement of the present invention, the lower part of the guide rod passes through the top cover and is fixed with the buoy; Cannot be flipped horizontally.

To sum up, the beneficial effects of the present invention are: the buoyancy of water is used to push the top cover to move up and down, and the top cover moves upward to contact with the upper cavity, so that the opening of the upper inner cavity is closed, and during this process, the water surface rises and the lower inner cavity The air in the cavity is squeezed into the upper inner cavity and discharged. When the water level drops, the top cover is separated from the upper cavity by the gravity of the top cover itself, and the opening of the upper inner cavity is opened, thereby solving the problem that the reclaimed water pipeline in the prior art cannot be automatically exhausted. technical flaws.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Among them: 1. Top cover; 2. Rubber sealing flange; 3. Float; 4. Sleeve; 41. Water inlet; 5. Guide cylinder; 6. Guide rod; 7. Upper cavity; 71. Upper inner cavity ; 8, the lower cavity; 81, the lower inner cavity; 9, bolts.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

The water pipeline automatic exhaust device shown in Figure 1 is composed of the following parts:

①. The upper chamber 7, the upper chamber 7 is provided with an upper cavity 71, the two ends of the upper cavity 71 respectively penetrate the bottom surface and the side of the upper chamber 7, and the bottom opening of the upper cavity 71 is a curved surface.

②. The lower cavity 8, the lower cavity 81 is arranged in the lower cavity 8, the upper and lower ends of the lower cavity 81 run through the upper end surface and the lower end surface of the lower cavity 8 respectively, and the top and the lower end of the lower cavity 81 The diameter of the bottom is smaller than the diameter of the middle part, the upper cavity 7 is installed on the top of the lower cavity 8 by bolts 9 and the upper cavity 71 communicates with the lower cavity 81 .

③. A hemispherical top cover 1 , the outer surface of the top cover 1 matches the curved surface of the bottom opening of the upper cavity 7 .

④. Sleeve 4, the sleeve 4 is composed of an upper cylindrical part and a lower circular platform part, wherein the outer diameter of the cylindrical part is equal to the inner diameter of the upper part of the lower cavity 81, and the top of the outer surface of the sleeve 4 It is fixed with the top of the lower cavity 8 , and a water inlet 41 is opened on the frustum of the sleeve 4 .

⑤. The buoy 3, the buoy 3 is arranged in the sleeve 4, and the buoy 3 can move up and down in the sleeve 4, the middle part of the buoy 3 is cylindrical, the upper part is conical, and the bottom is bent downward to be compatible with The arc surface that water inlet 41 matches.

⑥. Rubber sealing flange 2, the rubber sealing flange 2 is arranged at the position where the upper cavity 7 and the lower cavity 8 are installed, the inner side of the rubber sealing flange 2 is the same as the outer surface of the top cover 1 A surface that matches the surface.

⑦. Guide rod 6, the guide rod 6 is welded on the top cover 1, the guide cylinder 5 is set in the upper cavity 71, the upper part of the guide rod 6 is arranged in the guide cylinder 5 and can be placed in the guide cylinder 5 Move up and down.

The preferred guide cylinder 5 in the present invention is a bolt, the screw part of the bolt is hollow, the bolt is screwed to the upper cavity 7, and the upper part of the guide rod 6 is located in the hollow part of the screw. In order to guide the movement of the buoy 3 , the lower part of the guide rod 6 passes through the top cover 1 and is fixed with the buoy 3 .

The present invention realizes the automatic exhaust of the water pipeline in this way: the pressurized water flows into the lower inner cavity 81 from the bottom of the lower cavity 8, and enters the sleeve 4 from the water inlet 41 at the bottom of the sleeve 4. 4 As the water level rises, the buoy 3 moves upward under the buoyancy of the water, pushing the top cover 1 to move upward. During this process, the opening of the upper inner cavity in the upper cavity 7 is opened. During the rising process of the water surface, the sleeve The air in the cylinder 4 is squeezed upwards, and enters the upper inner cavity 71 through the junction of the lower inner cavity 81 and the upper inner cavity 71, and is discharged from the upper inner cavity 71, and the buoy 3 moves upward to the top cover 1 and the upper cavity. No longer moving upwards during contact, the opening of the lower part of the upper inner cavity 71 is closed, and the gas in the lower inner cavity is basically exhausted at this time, because the upper cavity 7 and the lower cavity 8 are installed with rubber sealing flanges 2 , so the sealing effect of the top cover 1 is better; when the pressure water level in the sleeve 3 drops, the buoy 3 and the top cover 1 will naturally move downward due to the action of gravity, and the contact between the top cover 1 and the upper cavity 7 will be separated , the opening of the lower part of the upper inner cavity 71 in the upper cavity body 7 is opened for the next discharge of gas.

All that are specifically described in the description of the present invention are existing technologies or can be realized through existing technologies. It should be understood that those skilled in the art can improve or change according to the above description, and all these improvements All changes and transformations should belong to the scope of protection of the appended claims of the present invention.

Claims (4)

1. A water pipeline automatic exhaust device, characterized in that: comprising An upper cavity (7), an upper cavity (71) is arranged in the upper cavity (7), and the two ends of the upper cavity (71) respectively pass through the bottom surface and the side of the upper cavity (7). The bottom opening of the upper cavity (71) is a curved surface; The lower cavity (8), the lower cavity (81) is set in the lower cavity (8), and the upper and lower ends of the lower cavity (81) run through the upper end surface and the upper surface of the lower cavity (8) respectively. The lower end face, and the diameters of the top and bottom of the lower cavity (81) are smaller than the diameter of the middle part, the upper cavity (7) is installed on the top of the lower cavity (8) and the upper cavity (71) and the lower cavity (81 ) interlinked; a hemispherical top cover (1), the outer surface of the top cover (1) matches the curved surface of the bottom opening of the upper cavity (7); A sleeve (4), the sleeve (4) is composed of an upper cylindrical part and a lower circular platform part, wherein the outer diameter of the cylindrical part is equal to the inner diameter of the upper part of the lower cavity (81), and the sleeve The top of the outer surface of the cylinder (4) is fixed to the top of the lower chamber (8), and the circular platform portion of the sleeve (4) is provided with a water inlet (41); The buoy (3), the buoy (3) is arranged in the sleeve (4), and the buoy (3) can move up and down in the sleeve (4), the middle part of the buoy (3) is cylindrical, The upper part is in the shape of a circular platform, and the bottom is bent downward to form an arc that can match the water inlet (41); An annular rubber sealing flange (2), the rubber sealing flange (2) is arranged at the position where the upper cavity (7) and the lower cavity (8) are installed, and the rubber sealing flange ( 2) The inner surface is a curved surface matched with the outer surface of the top cover (1). 2. The water pipeline automatic exhaust device according to claim 1, characterized in that: said top cover (1) is provided with a guide rod (6), and said upper cavity (71) is provided with a guide cylinder ( 5), the upper part of the guide rod (6) is arranged in the guide cylinder (5) and can move up and down in the guide cylinder (5). 3. The water pipeline automatic exhaust device according to claim 2, characterized in that: the guide cylinder (5) is a bolt, the screw part of the bolt is a hollow structure, and the bolt and the upper cavity (7) Threaded connection, the upper part of the guide rod (6) is located in the hollow part of the screw rod. 4. The water pipeline automatic exhaust device according to claim 2, characterized in that: the lower part of the guide rod (6) passes through the top cover (1) and is fixed with the buoy (3).