Shell-and-tube heat exchanger

Abstract

The utility model discloses a shell-and-tube heat exchanger which comprises a heat exchanger body, a first liquid inlet and a second liquid inlet. The flow guide pipe is fixedly arranged in the first liquid inlet and the second liquid inlet, a supporting part is arranged at the bottom end of the flow guide pipe, and an overflowing channel is formed between the supporting part and the bottom end of the flow guide pipe; the filter screen is arranged in the first liquid inlet and the second liquid inlet and is arranged in the flow guide pipe; the spoiler is at least arranged on the supporting part and is arranged at the bottom of the filter screen; according to the shell-and-tube heat exchanger, the problems that a large amount of dirt is attached to the interior of a traditional shell-and-tube heat exchanger due to the fact that a filtering device is not arranged at a liquid inlet, and the shell-and-tube heat exchanger is difficult to disassemble and assemble and inconvenient to clean due to the large size can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger field, concretely relates to a shell and tube heat exchanger. BACKGROUND

[0002] The shell and tube heat exchanger is a kind of energy-saving equipment for realizing heat transfer between materials between two or more than two fluids at different temperatures, is to make heat be transferred from fluid of higher temperature to fluid of lower temperature, so that fluid temperature reaches the index of flow process regulation, to meet the needs of process conditions, it is also one of the main equipment to improve energy utilization rate.The conventional shell and tube heat exchanger lacks filter device at inlet, and a large amount of dirt is attached in it, and the shell and tube heat exchanger is large in size, and has the problems of difficult disassembly and cleaning inconvenience. SUMMARY

[0003] To overcome the above-mentioned shortcomings, the utility model discloses a kind of shell and tube heat exchanger.

[0004] To achieve the above purpose, the utility model adopts the technical scheme including: heat exchanger body, the heat exchanger body has first liquid inlet and second liquid inlet;Flow guide pipe, the flow guide pipe is fixedly arranged in the first liquid inlet and second liquid inlet, the flow guide pipe bottom end has support part, and the support part is formed with overflow passage between the flow guide pipe bottom end;Filter screen, the filter screen is arranged in the first liquid inlet and second liquid inlet and placed in the flow guide pipe interior;Turbulence piece, the turbulence piece is at least arranged on the support part and placed at the bottom of the filter screen.

[0005] In the preferred technical scheme of the above shell and tube heat exchanger, the turbulence piece includes first spring and first baffle, and the first baffle is installed on the support part by means of the first spring.

[0006] In the preferred technical scheme of the above shell and tube heat exchanger, the first baffle is bent towards the direction of the filter screen.

[0007] In the preferred technical scheme of the above shell and tube heat exchanger, the turbulence piece further includes second spring and second baffle, and the second baffle is arranged on the inner wall of the flow guide pipe by means of the second spring.

[0008] In the preferred technical scheme of the above shell and tube heat exchanger, along the direction perpendicular to the inner wall of the flow guide pipe, the inner wall of the flow guide pipe is provided with a polished rod, and the second baffle is slidingly arranged on the polished rod.

[0009] In the preferred technical scheme of the above shell and tube heat exchanger, the cross section of the support part is in the shape of a circular truncated cone.

[0010] In the preferred technical scheme of the shell-and-tube heat exchanger, the filter screen is detachably arranged in the flow guide pipe.

[0011] In the preferred technical scheme of the shell-and-tube heat exchanger, the bottom of the filter screen is in an arched structure.

[0012] In the preferred technical scheme of the shell-and-tube heat exchanger, the flow guide pipe, the filter screen and the flow disturbing member are sprayed with a polytetrafluoroethylene coating.

[0013] The heat exchanger body has the advantages that the flow guide pipe, the filter screen and the flow disturbing member are arranged in the first liquid inlet and the second liquid inlet of the heat exchanger body, the fluid flowing out of the filter screen flows through the flow disturbing member, the flow disturbing member can impact at least part of the fluid on the bottom of the filter screen, so that the fluid in the filter screen appears turbulent flow, and the filter screen filters the fluid while avoiding the problem that impurities block the filter holes and affect the fluid flow rate, and the heat exchanger body has the characteristics of simple structure and high filtering efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Figure 6 is a schematic view of the filter screen exiting the heat exchanger body;

[0015] Figure 2 Figure 7 is a partial sectional view of the heat exchanger body.

[0016] In the figure: heat exchanger body 1, flow guide pipe 2, support part 21, flow passage 22, filter screen 3, flow disturbing member 4, first spring 41, first baffle plate 42, second spring 43, second baffle plate 44, light rod 5. DETAILED DESCRIPTION

[0017] The preferred embodiments of the heat exchanger body will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the heat exchanger body, and are not intended to limit the protection scope of the heat exchanger body.

[0018] It should be noted that in the description of the heat exchanger body, the terms "up", "down", "left", "right", "front", "back" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description and are not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the heat exchanger body. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In addition, it needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the term "arrangement", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, can also be detachable connection, or integral connection. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0020] As Figures 1 to 2 Indicated, the shell-and-tube heat exchanger of the utility model includes: heat exchanger body 1, heat exchanger body 1 has first liquid inlet and second liquid inlet;Flow guide pipe 2, flow guide pipe 2 is fixedly arranged in first liquid inlet and second liquid inlet, flow guide pipe 2 bottom end has support part 21, and the support part 21 is formed between the flow guide pipe 2 bottom end and the overflow passage 22;Filter screen 3, filter screen 3 is arranged in first liquid inlet and second liquid inlet and is placed inside flow guide pipe 2;Turbulence member 4, turbulence member 4 is at least arranged on support part 21 and is placed at the bottom of filter screen 3.

[0021] Referring to Figure 1 、 Figure 2 , heat exchanger body 1 has first liquid inlet and first liquid outlet in the tube body, has second liquid inlet and second liquid outlet in the tube head, flow guide pipe 2 is fixedly arranged in first liquid inlet and second liquid inlet, flow guide pipe 2 has opposite first end and second end, first end is fluid inlet, second end is fluid outlet, support part 21 is welded on the second end of flow guide pipe 2 through the stem, and the overflow passage 22 formed between the support part 21 and the second end of flow guide pipe 2 is used for passing fluid, filter screen 3 is arranged in first liquid inlet and second liquid inlet, filter screen 3 can filter small particle impurities, it needs to be explained that, the selection of filter screen 3 needs to be selected according to actual production needs, and the specific mesh size is not limited, turbulence member 4 is at least arranged on support part 21, and turbulence member 4 is located between support part 21 and the bottom of filter screen 3, when fluid flows out after filter screen 3, fluid will impact turbulence member 4 under the action of gravity, and turbulence member 4 can lift part of fluid towards filter screen 3, so that fluid can impact filter screen 3 wall and filter hole, to avoid the problem that filter hole is blocked by impurities, so that fluid is difficult to flow out of filter screen 3, guarantee that the fluid entering heat exchanger body 1 is filtered, guarantee the flow rate of fluid entering the inside of heat exchanger body 1, guarantee the normal heat exchange work of heat exchanger body 1, and have practicality.

[0022] In one or more embodiments, the turbulence member 4 includes a first spring 41 and a first baffle 42, and the first baffle 42 is installed on the support part 21 by means of the first spring 41;The first baffle 42 is bent towards the direction of the filter screen 3.

[0023] Referring to Figure 2, the first spring 41 has at least three and is uniformly arranged along the central axis of the first baffle 42. Through the arrangement, the stability of the first baffle 42 in the vertical direction is ensured, so that the first baffle 42 can work stably. The periphery of the first baffle 42 is bent and raised towards the direction of the filter screen 3, so that the fluid flowing downwards on the surface of the first baffle 42 can be raised towards the direction of the filter screen 3 by the bent part of the periphery of the first baffle 42, so that the fluid in the flow guide pipe 2 is turbulent, thereby impacting the impurities adhered to the inner wall surface of the filter screen 3, and avoiding the problem that the filter holes are blocked by impurities.

[0024] In one or more embodiments, the flow guide 4 further comprises a second spring 43 and a second baffle 44, and the second baffle 44 is arranged on the inner wall of the flow guide pipe 2 by means of the second spring 43.

[0025] Referring to Figure 2 , the second baffle 44 has a plurality of and is uniformly arranged along the central axis of the flow guide pipe 2 between the flow guide pipe 2 and the filter screen 3. When the fluid flows out from the side of the filter screen 3, the second baffle 44 between the filter screen 3 and the flow guide pipe 2 is constantly moved between the filter screen 3 and the flow guide pipe 2 by the elastic action of the second spring 43, so as to push and disturb the fluid flowing between the flow guide pipe 2 and the filter screen 3, and then make the fluid in the vertical direction of the inside of the filter screen 3 turbulent, thereby realizing the dredging of the filter holes of the filter screen 3 in the vertical direction and ensuring the smooth flow of the fluid.

[0026] In one or more embodiments, along the direction perpendicular to the inner wall of the flow guide pipe 2, the inner wall of the flow guide pipe 2 is provided with a light rod 5, and the second baffle 44 is slidingly arranged on the light rod 5.

[0027] Referring to Figure 2 , the light rod 5 is used to limit the movement of the second baffle 44 only along the inner wall perpendicular to the vertical direction of the flow guide pipe 2, so as to avoid the problem that the second baffle 44 fails to move due to excessive fluid pressure, and ensure the normal work of the second baffle 44.

[0028] In one or more embodiments, the cross section of the support part 21 is in the shape of a circular truncated cone. Referring to Figure 2 , through the arrangement, the fluid flowing through the support part 21 can be guided, the flow resistance of the fluid is reduced, and the flow rate of the fluid is ensured.

[0029] In one or more embodiments, the filter screen 3 is detachably arranged in the flow guide pipe 2. Specifically, a stepped layer can be provided at the first end of the flow guide pipe 2, and the top outer periphery of the filter screen 3 is arranged with an eaves. When assembling, the eaves at the top of the filter screen 3 is placed on the stepped layer of the flow guide pipe 2, which has the characteristics of convenient replacement of the filter screen 3 and is practical.

[0030] In one or more embodiments, the bottom of the filter screen 3 is in an arched structure. Referring to Figure 2 By this arrangement, the fluid flowing below the filter screen 3 is blocked by the arched structure of the bottom of the filter screen 3 and forms a turbulent flow in the filter screen 3, further avoiding the problem of large impurities blocking the filter holes.

[0031] In one or more embodiments, the flow guide pipe 2, the filter screen 3 and the flow guide are sprayed with a polytetrafluoroethylene coating. It should be noted that the polytetrafluoroethylene coating has certain self-lubricating and anti-rust functions, which can prolong the service life of the flow guide pipe 2, the filter screen 3 and the flow guide while reducing the problem of affecting the quality of the fluid due to rust.

[0032] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

[0033] So far, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without deviating from the principles of the present application, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical scheme after these changes or replacements will fall within the protection scope of the present application.

Claims

1. A shell and tube heat exchanger, characterized in that, The application relates to a heat exchanger body, which comprises a first liquid inlet and a second liquid inlet; a flow guide pipe fixedly arranged in the first liquid inlet and the second liquid inlet, the bottom end of the flow guide pipe being provided with a supporting part, and a flow channel being formed between the supporting part and the bottom end of the flow guide pipe; a filter screen arranged in the first liquid inlet and the second liquid inlet and placed in the flow guide pipe; and a flow disturbing part arranged on the supporting part and placed at the bottom of the filter screen. The flow disturbing part comprises a first spring and a first baffle plate, and the first baffle plate is arranged on the supporting part by means of the first spring. The periphery of the first baffle plate is bent towards the filter screen. The flow disturbing part further comprises a second spring and a second baffle plate, and the second baffle plate is arranged on the inner wall of the flow guide pipe by means of the second spring. The inner wall of the flow guide pipe is provided with a light rod in the direction perpendicular to the inner wall, and the second baffle plate is slidingly arranged on the light rod.

2. The shell and tube heat exchanger of claim 1, wherein: The cross section of the supporting part is in the shape of a circular truncated cone.

3. The shell and tube heat exchanger of claim 2, wherein: The filter screen is detachably arranged in the flow guide pipe.

4. The shell and tube heat exchanger of claim 1 or 2, wherein: The bottom of the filter screen is in the shape of an arch structure.

5. The shell and tube heat exchanger of claim 4, wherein: The flow guide pipe, the filter screen and the flow disturbing part are sprayed with a polytetrafluoroethylene coating.

6. The shell and tube heat exchanger of claim 1, wherein: ​ 7. The shell and tube heat exchanger of claim 1, wherein: ​ 8. The shell and tube heat exchanger of claim 1, wherein: ​ 9. The shell and tube heat exchanger of claim 1, wherein: ​

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