CN108036670A - A kind of heat-exchanging tube bundle position limiting structure - Google Patents

Abstract

The invention provides a heat exchange tube bundle limiting structure, which includes a beam sleeve, the beam sleeve includes a body and limiting parts located on both sides of the body; a heat exchange tube limiting member, the heat exchange tube limiting The positioning part includes a heat exchange tube sleeve, and the end of the heat exchange tube limiting part is provided with a connecting part hinged with the limiting part; the limiting part is provided with a first limiting hole, and the connecting part A second limiting hole is arranged on the top, and the first limiting hole is connected with the second limiting hole through a pin shaft. The first limiting hole includes a round hole and a slot-shaped hole. A single beam The first limiting holes on the sleeves are the same, and the first limiting holes on adjacent beam sleeves are different.

Description

A heat exchange tube bundle limit structure

technical field

The invention relates to the field of heat exchanger auxiliary technology, in particular to a heat exchange tube bundle limiting structure.

Background technique

In energy utilization technology, a heat exchanger is a device for exchanging heat between hot and cold fluids without direct contact. The tube heat exchanger has a wide range of applications in coal-fired boilers, waste incineration power generation and other fields. Water and other liquid phase substances are used as cooling medium to cool high-temperature flue gas, and the heated water can be used as heat medium in other fields, such as heating, etc., which is an effective means to improve energy utilization efficiency.

The heat exchange tubes are arranged approximately in parallel on the heat exchanger. Due to their large length, a limiting structure is required to limit their movement, so as to avoid entanglement and interference between the tubes and affect the heat exchange effect. In addition, the incident gas temperature is high and contains impurities such as dust, which seriously pollutes structures such as heat exchange tubes. How to solve this problem and reduce the cleaning of the device is of great significance to reduce work intensity and cost.

Contents of the invention

In order to solve the above problems, the present invention provides a heat exchange tube bundle limiting structure.

In order to achieve the stated purpose, the present invention adopts the following technical solutions: comprising

A beam sleeve, the beam sleeve includes a body and stoppers located on both sides of the body;

A heat exchange tube limiter, the heat exchange tube limiter includes a heat exchange tube sleeve, and the end of the heat exchange tube limiter is provided with a connecting portion hinged to the limiter;

The limiting part is provided with a first limiting hole, the connecting part is provided with a second limiting hole, and the first limiting hole is connected with the second limiting hole through a pin shaft, so The first limiting holes include circular holes and slot-shaped holes, the first limiting holes on a single beam sleeve are the same, and the first limiting holes on adjacent beam sleeves are different.

Therefore, the connection structure of the limiting part and the connecting part can adapt to the situation of a large change in the ambient temperature, and at the same time, the movement of the heat exchange tube in a local area under the action of the heat exchange tube sleeve promotes the mixing of the internal cooling liquid or gas.

As a preference, the slot-shaped hole includes a rectangular through slot and arc-shaped sides located at two ends of the rectangular through slot.

Thus, the jamming of the heat exchange tube limiter and the beam sleeve during relative movement is avoided.

As a preference, a connecting plate and a reinforcing rib plate are provided between the adjacent heat exchange tube limiters.

As a preference, the connecting portion and the connecting plate are parallel to the axis of the heat exchange tube sleeve, and the rib plate is perpendicular to the axis of the heat exchange tube sleeve and divides the connecting plate into upper and lower parts. area.

Therefore, the moment caused by the wind load acting on the upper and lower regions makes the included angle between the axis of the heat exchange tube sleeve and the axis of the heat exchange tube constantly change during the vibration process.

As a preference, the cross-section of the outer surface of the heat exchange tube limiting member is circular, and the diameter gradually increases from both ends to the middle.

As a result, the incident wind acts on the heat exchange tubes after splitting up and down.

As a preference, the inner surface of the heat exchange tube limiting member is a conical structure with a cross-sectional diameter gradually increasing from top to bottom.

Therefore, the installation is convenient, and the dust carried by the flow-through gas accumulates in the heat exchange tube limiter and can be naturally discharged under the action of gravity.

As a preference, the beam casing and the heat exchange tube limiter are made of fluoroplastics, which can withstand the temperature of the incident gas, and at the same time do not react with the corrosive components in the flue gas, and are smooth and non-abrasive heat exchange tubes.

As a preference, the beam sleeve axis is approximately perpendicular to the rotation plane of the heat exchange tube limiting member relative to the beam sleeve.

Thus, the heat exchange tube limiter swings slightly in the vertical plane relative to the beam sleeve.

In summary, compared with the prior art, the present invention has the following advantages: the structure can adapt to the situation of large temperature changes, the cooling medium in the heat exchange tube is partially mixed, and the energy utilization rate is improved; the heat exchange tube and the heat exchange tube sleeve The relative movement and the structure of the heat exchange tube sleeve make the dust carried by the passing gas discharge by itself, reducing the accumulation, reducing the intensity of cleaning work and reducing the cost; the heat exchange efficiency is high.

Description of drawings

Fig. 1 is a structural front view of the present invention;

Fig. 2 is a top view of the structure of the present invention.

The labels in the figure are as follows:

1. beam sleeve, 11. Ontology, 12. limit department, 121. first limit hole, 1211. circular hole, 1212． Slot hole, 2. Heat exchange tube limiter, 21. Heat exchange tube sleeve, 22. connecting part, 221. The second limiting hole, 23. connecting plate, 24. Reinforcing ribs.

Detailed ways

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

As shown in Figure 1 and Figure 2, the tube bundle limiting structure includes a beam sleeve 1, the beam sleeve 1 includes a body 11 and limiting parts 12 located on both sides of the body 11; heat exchange tube limiting parts 2, heat exchange tube The limiting part 2 includes a heat exchange tube sleeve 21, and the end of the heat exchange tube limiting part 2 is provided with a connecting part 22 hinged with the limiting part 12; the limiting part 12 is provided with a first limiting hole 121, and the connecting part 22 is provided with a second limit hole 221, the first limit hole 121 and the second limit hole 221 are connected by a pin shaft, the first limit hole 121 includes a round hole 1211 and a slot hole 1212, a single beam sleeve The first limiting holes 121 on the barrel 1 are the same, and the first limiting holes 121 on adjacent beam sleeves 1 are different. The slotted hole 1212 connection structure between the limiting part 12 and the connecting part 22 can adapt to the situation of large-scale changes in the ambient temperature, and at the same time, the local movement of the heat exchange tube under the action of the heat exchange tube sleeve 21 promotes its internal cooling. A mixture of liquids or gases. The slot-shaped hole 1212 includes a rectangular through slot and arc-shaped edges at both ends of the rectangular through slot, which can avoid the jamming of the heat exchange tube limiting member 2 and the beam sleeve 1 during relative movement.

A connecting plate 23 and a reinforcing rib plate 24 are provided between adjacent heat exchange tube limiting parts 2 . The connecting portion 22 and the connecting plate 23 are parallel to the axis of the heat exchange tube sleeve 21 , and the rib plate 24 is perpendicular to the axis of the heat exchange tube sleeve 21 and divides the connecting plate 23 into upper and lower regions. The moment caused by the wind load acting in the upper and lower areas makes the angle between the axis of the heat exchange tube sleeve 21 and the axis of the heat exchange tube constantly change during the vibration process. During this process, the vibration of the heat exchange tube makes the contaminated dust slide down. It is not easy to accumulate dust between the heat exchange tube sleeve 21 and the heat exchange tube.

The cross-section of the outer surface of the heat exchange tube limiting member 2 is circular, and the diameter gradually increases from both ends to the middle. At this time, after the incident wind acts on the outer surface of the heat exchange tube stopper 2, the upper and lower branches flow and contact the heat exchange tubes, so that the heat exchange tubes near the upper and lower ends of the heat exchange tube stopper 2 are under the wind load. A certain degree of bending deformation occurs, and the deformation of the internal cooling medium flow channel will cause the mixing of cooling medium, promote heat transfer, and improve utilization efficiency. The flow rate of cooling liquid can be appropriately increased to improve cooling efficiency. Since the inner surface of the heat exchange tube is relatively smooth, the cooling medium between the flow layers seldom interacts and mixes. Therefore, in the heat exchange process, it takes a long time for the fluid temperature of each flow layer to become consistent, and the utilization efficiency of the cooling medium must be ensured. , correspondingly, there is a certain limitation on the flow rate, which will reduce the heat exchange efficiency of the device, and the heat exchange tube bundle limiting structure can overcome this problem.

The inner surface of the heat exchange tube limiting member 2 is a conical structure with a cross-sectional diameter gradually increasing from top to bottom, and the cone angle is preferably 0.3°. It is convenient for installation. In addition, the dust carried by the flow-through gas accumulated in the heat exchange tube limiting member 2 can be naturally discharged through the opening of the conical structure under the action of gravity.

The beam casing and the heat exchange tube limiting member 2 are made of fluoroplastics, preferably polytetrafluoroethylene in this embodiment, so as to be able to withstand the temperature of the incident gas. The axis of the beam sleeve 1 is approximately perpendicular to the rotation plane of the heat exchange tube limiting member 2 relative to the beam sleeve 1 . At this time, the heat exchange tube limiting member 2 swings slightly in the vertical plane relative to the beam sleeve 1 .

The above description is only an explanation of the present invention, so that those of ordinary skill in the art can implement the scheme completely, but it is not a limitation of the present invention. Those skilled in the art can make non-inventive changes to this embodiment as needed after reading this description. Contributed modifications, these are not creative modifications, but as long as they are within the scope of the claims of the present invention, they are all protected by the patent law.

Claims (8)

1. A heat exchange tube bundle limiting structure, characterized in that: comprising A beam sleeve (1), the beam sleeve (1) includes a body (11) and limiting parts (12) located on both sides of the body (11); The heat exchange tube limiter (2), the heat exchange tube limiter (2) includes a heat exchange tube sleeve (21), the end of the heat exchange tube limiter (2) is provided with the limiter A hinged connecting portion (22) of the bit portion (12); The limiting part (12) is provided with a first limiting hole (121), the connecting part (22) is provided with a second limiting hole (221), and the first limiting hole (121) and It is connected with the second limiting hole (221) by a pin shaft, the first limiting hole (121) includes a round hole (1211) and a grooved hole (1212), and a single beam sleeve (1) The first limiting holes (121) on the beam sleeves (1) are the same, and the first limiting holes (121) on the adjacent beam sleeves (1) are different. 2 . The heat exchange tube bundle limiting structure according to claim 1 , characterized in that: the slot-shaped hole ( 1212 ) includes a rectangular through-slot and arc-shaped sides at both ends of the rectangular-shaped through-slot. 3 . 3. A heat exchange tube bundle limiting structure according to claim 1, characterized in that: a connecting plate (23) and a rib plate (24) are arranged between adjacent heat exchange tube limiting parts (2) ). 4. A heat exchange tube bundle limiting structure according to claim 3, characterized in that: the connection part (22) and the connection plate (23) are parallel to the axis of the heat exchange tube sleeve (21) , the rib plate (24) is perpendicular to the axis of the heat exchange tube sleeve (21) and divides the connecting plate (23) into upper and lower regions. 5 . The heat exchange tube bundle limiting structure according to claim 1 , characterized in that: the cross section of the outer surface of the heat exchange tube limiting member ( 2 ) is circular, and the diameter gradually increases from both ends to the middle. 6 . 6 . The heat exchange tube bundle limiting structure according to claim 1 , characterized in that: the inner surface of the heat exchange tube limiting member ( 2 ) is a conical structure with a cross-sectional diameter gradually increasing from top to bottom. 7 . 7 . The heat exchange tube bundle limiting structure according to claim 1 , characterized in that: the beam sleeve and the heat exchange tube limiting member ( 2 ) are made of polytetrafluoroethylene. 8. A heat exchange tube bundle limiting structure according to claim 1, characterized in that: the axis of the beam sleeve (1) is opposite to the beam sleeve ( 1) The plane of rotation is approximately vertical.