A leak-proof connecting structure of a plate heat exchanger

Abstract

The utility model discloses a kind of leakage-proof connecting structure of plate heat exchanger, including plate heat exchanger body, the side of plate heat exchanger body is provided with leakage-proof reinforcing assembly;The leakage-proof reinforcing assembly includes joint pipe, the interface of joint pipe and plate heat exchanger body is fixedly connected, the first annular groove is opened in the outer wall of one end of joint pipe, the leakage-proof reinforcing assembly further includes outer connection pipe, the second annular groove is opened in the outer wall of one end of outer connection pipe, the utility model relates to plate heat exchanger leakage-proof technical field;The leakage-proof connecting structure of this plate heat exchanger, by setting leakage-proof reinforcing assembly, preliminary sealing is formed by the plug-in cooperation of inner connection pipe and joint pipe, and secondary sealing is realized by the interference fit of arc-shaped insertion strip and first annular groove, second annular groove, and the sealing performance of connecting place is effectively improved by double sealing structure, fluid leakage can be effectively prevented, and energy waste and security risk are avoided.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger leak prevention technology, specifically a leak prevention connection structure for plate heat exchangers. Background Technology

[0002] Plate heat exchangers are highly efficient heat exchange devices, widely used in various industries such as chemical, food, pharmaceutical, and HVAC due to their advantages of high heat transfer efficiency, compact structure, and small footprint. During operation, plate heat exchangers require a connection structure to link external pipelines to the exchanger body for fluid introduction and export.

[0003] However, the existing connection structures of plate heat exchangers still have some shortcomings in practical applications. Some connection structures rely solely on flange bolts or simple plug-in methods for connection, resulting in limited sealing performance. During long-term use, factors such as fluid pressure, temperature changes, and vibration can easily lead to leakage problems at the connection points, causing not only energy waste and material loss but also potential safety hazards.

[0004] Therefore, this utility model provides a leak-proof connection structure for a plate heat exchanger to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a leak-proof connection structure for plate heat exchangers, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof connection structure for a plate heat exchanger, comprising a plate heat exchanger body, wherein a leak-proof reinforcement component is provided on one side of the plate heat exchanger body; the leak-proof reinforcement component includes a connector pipe, which is fixedly connected to the interface of the plate heat exchanger body, and a first annular groove is formed on the outer wall of one end of the connector pipe; the leak-proof reinforcement component also includes an outer pipe, and a second annular groove is formed on the outer wall of one end of the outer pipe; a mounting bracket is fixedly connected to one side of the plate heat exchanger body. The mounting rods are arranged in a rectangular pattern around the connector tube in groups of four. A crossbar is fixedly connected to one side of every two mounting rods. The two crossbars are located above and below the connector tube, respectively. A longitudinal rod is symmetrically fixed between the two crossbars. A limit groove is provided on one side of the longitudinal rod. A screw is threaded into the inside of the crossbar. An arc-shaped pressure block is rotatably connected to one end of the screw. An arc-shaped insert is fixedly connected to the inner wall of the arc-shaped pressure block. There are two arc-shaped inserts, which are respectively inserted into the first annular groove and the second annular groove.

[0007] Furthermore, the two ends of the arc-shaped pressure block are fixedly connected to limit sliders, and the limit sliders are slidably connected to the interior of the corresponding limit grooves.

[0008] Furthermore, an anti-slip knob is fixedly connected to the other end of the screw.

[0009] Furthermore, an inner delivery pipe is fixedly connected to one end of the inner wall of the outer pipe, and the inner delivery pipe is inserted into the inside of the connector pipe.

[0010] Furthermore, the arc-shaped insert consists of a built-in arc-shaped metal strip skeleton and a rubber layer that adheres to the outer wall of the arc-shaped metal strip skeleton. The rubber layer is interference-fitted with the first annular groove and the second annular groove.

[0011] Furthermore, the inner edges of the inner walls at both ends of the inner delivery pipe are rounded to reduce fluid resistance.

[0012] Beneficial effects This invention provides a leak-proof connection structure for plate heat exchangers. Compared with the prior art, it has the following advantages: 1. The leak-proof connection structure of this plate heat exchanger utilizes a leak-proof reinforcement component. An initial seal is formed by the insertion and connection of the internal delivery pipe and the connector pipe. A secondary seal is achieved through the interference fit between the arc-shaped insert and the first and second annular grooves. This double-sealing structure effectively improves the sealing performance at the connection, preventing fluid leakage and avoiding energy waste and safety hazards. The arc-shaped insert adopts a composite structure of an arc-shaped metal frame and a rubber layer, ensuring structural strength while utilizing the elasticity of the rubber layer to achieve a tight seal. The interference fit design further enhances sealing reliability, making it suitable for high-pressure fluid transportation scenarios.

[0013] 2. The leak-proof connection structure of this plate heat exchanger features a stable mounting frame composed of mounting rods, horizontal bars, and vertical bars. Rotating the anti-slip knob drives the screw, moving the arc-shaped pressure block to achieve quick insertion and separation of the arc-shaped insert. Installation and disassembly are convenient, facilitating later maintenance and repair. The rounded corners of the inner edges of both ends of the internal delivery pipe effectively reduce fluid resistance and energy loss, while also reducing fluid erosion of the pipe's inner wall, extending the service life of the connection structure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the external structure of this utility model; Figure 2 This is a side view of the structure of this utility model after removing the plate heat exchanger body; Figure 3 This is a side view of the structure of this utility model after the longitudinal bars have been removed again; Figure 4 This is a side view of the specific structure of the arc-shaped pressure block of this utility model; Figure 5 This is a partial structural side view of the present invention; Figure 6 This is a partial exploded view of the structure of this utility model.

[0016] In the diagram: 1. Plate heat exchanger body; 2. Leakage-proof reinforcement assembly; 21. Connecting pipe; 22. First annular groove; 23. External connecting pipe; 24. Second annular groove; 25. Internal conveying pipe; 26. Mounting rod; 27. Horizontal bar; 28. Vertical bar; 29. ​​Limiting groove; 210. Screw; 211. Arc-shaped pressure block; 212. Limiting slider; 213. Arc-shaped insert; 214. Anti-slip knob. Detailed Implementation

[0017] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0018] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] Reference Figures 1 to 6 This application provides a leak-proof connection structure for a plate heat exchanger, including a plate heat exchanger body 1, and a leak-proof reinforcement component 2 is provided on one side of the plate heat exchanger body 1.

[0020] The leak-proof reinforcement component 2 includes a connector pipe 21, which is fixedly connected to the plate heat exchanger body 1 at its interface by welding, resulting in a strong connection and good sealing performance. A first annular groove 22 is formed on the outer wall of one end of the connector pipe 21. The leak-proof reinforcement component 2 also includes an outer pipe 23, which has a second annular groove 24 on its outer wall at one end. An inner conveying pipe 25 is fixedly connected to one end of the inner wall of the outer pipe 23. The inner conveying pipe 25 and the outer pipe 23 are integrally formed, and the inner conveying pipe 25 is inserted into the interior of the connector pipe 21. The outer wall of the inner conveying pipe 25 is tightly fitted with the inner wall of the connector pipe 21, forming a preliminary seal. The inner edges of both ends of the inner conveying pipe 25 are rounded to reduce fluid resistance during transport and prevent eddies from forming at the corners.

[0021] Mounting rods 26 are fixedly connected to one side of the plate heat exchanger body 1. Four mounting rods 26 are arranged in a rectangular pattern around the connector tube 21. The mounting rods 26 are bolted to the plate heat exchanger body 1 for easy disassembly and replacement. A crossbar 27 is fixedly connected to one side of every two mounting rods 26. The two crossbars 27 are located above and below the connector tube 21, respectively. The crossbars 27 are welded to the mounting rods 26 for stable connection. A longitudinal bar 28 is symmetrically fixed between the two crossbars 27. The longitudinal bar 28 is welded to the crossbar 27, forming a stable rectangular frame structure.

[0022] A limiting groove 29 is provided on one side of the longitudinal rod 28. A screw 210 is internally threaded onto the cross rod 27. One end of the screw 210 is rotatably connected to an arc-shaped pressure block 211 via a bearing. The bearing prevents the arc-shaped pressure block 211 from rotating synchronously when the screw 210 rotates, ensuring that the arc-shaped pressure block 211 only moves in a straight line. Limiting sliders 212 are fixedly connected to both ends of the arc-shaped pressure block 211. The limiting sliders 212 are slidably connected to the interior of the corresponding limiting groove 29. The cross-sectional shape of the limiting sliders 212 matches the cross-sectional shape of the limiting groove 29, preventing the limiting sliders 212 from disengaging from the limiting groove 29.

[0023] An arc-shaped insert 213 is fixedly connected to the inner wall of the arc-shaped pressure block 211. The arc-shaped insert 213 is glued to the inner wall of the arc-shaped pressure block 211. There are two arc-shaped inserts 213, which are respectively inserted into the first annular groove 22 and the second annular groove 24. The arc-shaped insert 213 consists of a built-in arc-shaped metal strip skeleton and a rubber layer attached to the outer wall of the arc-shaped metal strip skeleton. The rubber layer is made of wear-resistant and corrosion-resistant nitrile rubber material. The rubber layer is interference-fitted with the first annular groove 22 and the second annular groove 24, which can tightly fill the gap in the groove and improve the sealing effect.

[0024] The other end of the screw 210 is fixedly connected to an anti-slip knob 214. The anti-slip knob 214 and the screw 210 are integrally formed. The outer wall of the anti-slip knob 214 is provided with evenly distributed anti-slip textures to increase the friction between the hand and the knob, making it easy for the operator to turn it manually.

[0025] All electrical devices in this plan are powered by an external power source.

[0026] Working principle: During installation, the leak-proof connection structure of this plate heat exchanger is as follows: First, align the inner connecting pipe 25 at one end of the outer connecting pipe 23 with the opening of the connector pipe 21, and slowly insert it into the interior of the connector pipe 21 until the end of the inner connecting pipe 25 contacts the limiting step inside the connector pipe 21. At this time, the outer connecting pipe 23 and the connector pipe 21 are initially connected, and the outer wall of the inner connecting pipe 25 is tightly fitted with the inner wall of the connector pipe 21, forming a preliminary seal.

[0027] Subsequently, the operator rotates the anti-slip knobs 214 on the upper and lower crossbars 27 respectively. The anti-slip knobs 214 drive the screw 210 to rotate in the thread of the crossbar 27. Since one end of the screw 210 is connected to the arc-shaped pressure block 211 through the bearing, and the limiting sliders 212 at both ends of the arc-shaped pressure block 211 are slidably connected in the limiting grooves 29 of the vertical bar 28, the rotation of the screw 210 will push the arc-shaped pressure block 211 to move closer to the connector tube 21 and the outer tube 23.

[0028] As the arc-shaped pressure block 211 moves, the two arc-shaped inserts 213 on its inner wall align with the first annular groove 22 on the connector tube 21 and the second annular groove 24 on the outer tube 23, respectively. Continue rotating the anti-slip knob 214 until the arc-shaped inserts 213 are fully inserted into the first annular groove 22 and the second annular groove 24. Because the rubber layer of the arc-shaped insert 213 is in an interference fit with the annular groove, the rubber layer will undergo elastic deformation, tightly filling the gap in the annular groove to achieve a secondary seal. At the same time, the arc-shaped pressure block 211 clamps and fixes the connector tube 21 and the outer tube 23, completing the connection and installation.

[0029] During use, the tight seal between the inner delivery pipe 25 and the connector pipe 21, as well as the interference fit seal between the arc-shaped insert 213 and the annular groove, effectively prevent fluid leakage from the connection point. The clamping action of the mounting frame and the arc-shaped pressure block 211 ensures the stability of the connection structure and prevents loosening under high pressure or vibration.

[0030] When disassembly and maintenance are required, rotate the anti-slip knob 214 in the opposite direction to drive the screw 210 to rotate in the opposite direction, pull the arc-shaped pressure block 211 to move away from the connector tube 21 and the outer tube 23, and the arc-shaped insert 213 will disengage from the first annular groove 22 and the second annular groove 24. Then the outer tube 23 together with the inner delivery tube 25 can be pulled out from the connector tube 21. The operation is convenient and efficient.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof connection structure for a plate heat exchanger, comprising a plate heat exchanger body (1), characterized in that: A leak-proof reinforcement component (2) is provided on one side of the plate heat exchanger body (1); the leak-proof reinforcement component (2) includes a connector pipe (21), which is fixedly connected to the interface of the plate heat exchanger body (1), and a first annular groove (22) is opened on the outer wall of one end of the connector pipe (21). The leak-proof reinforcement component (2) also includes an outer pipe (23), and a second annular groove (24) is opened on the outer wall of one end of the outer pipe (23). An installation rod (26) is fixedly connected to one side of the plate heat exchanger body (1). The installation rods (26) are arranged in a rectangular pattern around the connector pipe (21) in groups of four. A crossbar (27) is fixedly connected to one side of the mounting rod (26). The two crossbars (27) are located above and below the connector tube (21) respectively. A longitudinal rod (28) is symmetrically fixedly connected between the two crossbars (27). A limiting groove (29) is opened on one side of the longitudinal rod (28). A screw (210) is threaded inside the crossbar (27). An arc-shaped pressure block (211) is rotatably connected to one end of the screw (210). An arc-shaped insert (213) is fixedly connected to the inner wall of the arc-shaped pressure block (211). There are two arc-shaped inserts (213), which are respectively inserted into the first annular groove (22) and the second annular groove (24).

2. The anti-leakage connection structure for a plate heat exchanger according to claim 1, characterized in that: The two ends of the arc-shaped pressure block (211) are fixedly connected to the limiting slider (212), and the limiting slider (212) is slidably connected to the corresponding limiting groove (29).

3. The anti-leakage connection structure for a plate heat exchanger according to claim 1, characterized in that: The other end of the screw (210) is fixedly connected to an anti-slip knob (214).

4. The anti-leakage connection structure for a plate heat exchanger according to claim 1, characterized in that: One end of the inner wall of the outer pipe (23) is fixedly connected to an inner conveying pipe (25), which is inserted into the inside of the connector pipe (21).

5. The anti-leakage connection structure for a plate heat exchanger according to claim 1, characterized in that: The arc-shaped insert (213) consists of a built-in arc-shaped metal strip skeleton and a rubber layer attached to the outer wall of the arc-shaped metal strip skeleton. The rubber layer is interference-fitted with the first annular groove (22) and the second annular groove (24).

6. The anti-leakage connection structure for a plate heat exchanger according to claim 4, characterized in that: The inner edges of the inner walls at both ends of the inner delivery pipe (25) are rounded to reduce fluid resistance.

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