A corrosion-resistant quick-change joint type plate heat exchanger

Abstract

The utility model provides a corrosion-resistant quick-change joint type plate heat exchanger, in which a fixed clamping plate is tightly attached to a plate assembly, and the other side of the plate assembly is tightly attached to a movable clamping plate, and the movable clamping plate and the fixed clamping plate are connected via a clamping device, and the fixed clamping plate is provided with a pipe installation hole, and a pipe fixing groove is provided on one side of the plate assembly adjacent to the pipe installation hole, and the installation portion of the pipe is connected to the pipe fixing groove by clamping, and a sealing structure is provided between the installation portion and the plate assembly, and between the installation portion and the fixed clamping plate. The utility model limits the axial displacement of the pipe by providing a clamping positioning structure, and after the clamping device is clamped, the plate assembly is tightly attached to the clamping positioning structure, and the clamping positioning structure is fixed together with the fixed clamping plate, and the connection structure is simple, easy to disassemble, and convenient to replace, which greatly shortens the later maintenance time and system shutdown cost loss, and can meet the customer's demand for low-cost and fast handling of fault problems.

Description

Technical Field

[0001] The utility model relates to the technical field of detachable plate heat exchangers, in particular to a corrosion-resistant quick-change joint type plate heat exchanger. Background Art

[0002] Plate heat exchangers have the characteristics of high heat exchange efficiency, compact and lightweight structure, wide application, and easy maintenance. They have been widely used in metallurgy, mining, petroleum, chemical industry, electricity, medicine, food, chemical fiber, papermaking, textile, shipbuilding, heating and other fields. In the field of shipbuilding and marine engineering, local materials are generally used to directly cool fresh water or lubricating oil with seawater, and the plate heat exchanger has high requirements for seawater corrosion resistance. Heat exchanger plates are generally made of titanium that is resistant to seawater corrosion; in order to save costs, heat exchanger clamping plates are often made of carbon steel, but this material is not resistant to seawater corrosion, so rubber bushings or welded titanium lining rings are often installed at the seawater inlet and outlet to isolate seawater from corrosion to the clamping plate. If seawater corrosion-resistant titanium is used as the clamping plate, the cost will be raised. During use, with the scouring of seawater and the passage of time, rubber bushings often age and crack or titanium lining ring welds crack, which need to be returned to the factory for repair, and the system shutdown causes losses to production operations. Summary of the invention

[0003] In view of this, the utility model aims to provide a corrosion-resistant quick-change joint type plate heat exchanger to solve the problem of inconvenient pipe maintenance and installation in the prior art.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A corrosion-resistant quick-change joint type plate heat exchanger comprises: a movable clamping plate, a plate assembly, a fixed clamping plate, a pipe and a clamping device, wherein the fixed clamping plate is in close contact with the plate assembly, and the other side of the plate assembly is in close contact with the movable clamping plate, the movable clamping plate and the fixed clamping plate are connected via the clamping device, the fixed clamping plate is provided with a pipe mounting hole, a pipe fixing groove is provided on one side of the pipe mounting hole adjacent to the plate assembly, the mounting portion of the pipe is clamped and connected with the pipe fixing groove, and a sealing structure is provided between the mounting portion and the plate assembly and between the mounting portion and the fixed clamping plate.

[0006] Furthermore, the fixed clamping plate is provided with a first connecting hole for connecting the clamping device.

[0007] Furthermore, at least two first connection holes are provided, and the first connection holes are symmetrically arranged with respect to the central axis in the length direction of the fixed clamping plate, and the first connection holes are adjacent to the long sides of the fixed clamping plate.

[0008] Furthermore, the connecting pipe also includes a connecting portion and a through hole, wherein the connecting portion is used to connect the system pipeline, and the through hole is arranged in the middle of the connecting pipe along the axial direction for fluid to enter and exit the heat exchanger.

[0009] Furthermore, the cross-sections of the mounting portion and the connecting portion are circular rings, a first boss is provided at one end of the mounting portion adjacent to the fixed clamping plate, an end of the mounting portion away from the first boss is connected to the connecting portion, and a second boss is provided at one end of the connecting portion away from the mounting portion.

[0010] Furthermore, one end of the connecting portion away from the mounting portion is threadedly connected to a system pipeline.

[0011] Furthermore, the outer diameter of the mounting portion is D1, the outer diameter of the connecting portion is D2, and D1>D2.

[0012] Furthermore, the connecting pipe fixing groove includes a limiting portion and a main body portion, two ends of the limiting portion are connected to the main body portion, and the connecting pipe fixing groove cooperates with the first boss to form a rotation-rejecting structure.

[0013] Furthermore, the limiting portion of the connecting pipe fixing groove is linear, and the main body of the connecting pipe fixing groove (302) is arc-shaped.

[0014] Furthermore, the connecting pipe is integrally formed from titanium material.

[0015] Furthermore, a sealing ring is installed between the first boss and the connecting pipe fixing groove, the mounting portion is cooperatively connected with the connecting pipe mounting hole sleeve, and a sealing rubber ring is provided between the first boss and the plate assembly to limit fluid leakage.

[0016] Compared with the prior art, the corrosion-resistant quick-change joint type plate heat exchanger of the utility model has the following advantages:

[0017] 1. The axial displacement of the pipe is limited by setting a clamping positioning structure. After the clamping device is clamped, the plate assembly is tightly attached to the clamping positioning structure, and the clamping positioning structure is fixed together with the fixed clamping plate. The connection structure is simple, easy to disassemble and replace, which greatly shortens the later maintenance time and system shutdown cost loss, and can meet customers' needs for low-cost and fast handling of fault problems.

[0018] 2. By setting up a rotation prevention structure, the rotation of the pipe relative to the pipe fixing groove can be limited, avoiding vibration of the connection between the pipe and the plate assembly, causing fluid to overflow onto the fixed clamping plate and rust, thereby improving the stability and reliability of the connection and extending the service life of the heat exchanger.

[0019] 3. By setting a sealing ring, the sealing performance of the clamping structure can be enhanced to ensure that the connection is tighter and leak-free, adapting to the connection requirements of different sizes and shapes, while buffering external pressure or vibration to protect the connection from damage.

[0020] 4. Since the outer diameter surface processing accuracy of the installation part is relatively high, the installation part and the connection part use pipes with different outer diameters, which reduces the processing area of ​​the outer diameter surface of the installation part, reduces the processing difficulty, helps to reduce the scrap rate and production costs, and facilitates the distinction between the two parts to prevent the wrong connection direction during the connection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 This is a front view of the heat exchanger of the utility model;

[0023] Figure 2 It is a right side view of the heat exchanger of the utility model;

[0024] Figure 3 This is a schematic diagram of the heat exchanger clamping structure of the utility model;

[0025] Figure 4 This is a front view of the first type of pipe of the utility model;

[0026] Figure 5 This is a right side view of the first type of pipe of the utility model;

[0027] Figure 6 This is a cross-sectional view of the first type of pipe of the utility model;

[0028] Figure 7 This is a front view of the fixed clamping plate of the utility model;

[0029] Figure 8 It is a cross-sectional view of the fixed clamping plate of the utility model;

[0030] Fig. 9 This is a rear view of the fixed clamping plate of the utility model;

[0031] Fig.10 It is a front view of the movable clamping plate of the utility model;

[0032] Fig.11 This is a front view of the second type of pipe of the utility model;

[0033] Fig.12 This is a cross-sectional view of the second type of pipe of the utility model;

[0034] Fig.13 This is a schematic diagram of the limit block structure of the utility model;

[0035] Description of reference numerals:

[0036] 1. Movable clamping plate; 101. Second connecting hole; 2. Plate assembly; 3. Fixed clamping plate; 301. Pipe connection mounting hole; 302. Pipe connection fixing groove; 303. First connecting hole; 304. Limiting block; 4. Pipe connection; 401. Mounting portion; 402. Connecting portion; 403. Through hole; 404. First boss; 405. Second boss; 406. Sealing ring; 5. Clamping device; 501. Clamping bolt; 502. Nut. DETAILED DESCRIPTION

[0037] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0038] It should be noted that all terms used in the present invention to indicate direction and position, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "lower", "lateral", "longitudinal", "center", etc., are only used to explain the relative position relationship and connection status between the components in a certain state, and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The utility model discloses a corrosion-resistant quick-change joint type plate heat exchanger, comprising: a movable clamping plate 1, a plate assembly 2, a fixed clamping plate 3, a pipe 4 and a clamping device 5, the fixed clamping plate 3 is tightly attached to the plate assembly 2, the other side of the plate assembly 2 is tightly attached to the movable clamping plate 1, the movable clamping plate 1 and the fixed clamping plate 3 are connected via the clamping device 5, the fixed clamping plate 3 is provided with a pipe installation hole 301, a pipe fixing groove 302 is provided on one side of the pipe installation hole 301 adjacent to the plate assembly 2, a mounting portion 401 of the pipe 4 is clamped and connected with the pipe fixing groove 302, and a sealing structure is provided between the mounting portion 401 and the plate assembly 2, and between the mounting portion 401 and the fixed clamping plate 3.

[0042] The clamping positioning structure includes a pipe fixing groove 302 and a mounting portion 401. The pipe mounting hole 301 and the pipe fixing groove 302 are used to fix one end of the pipe 4. After the clamping device 5 is clamped, the plate assembly 2 is tightly attached to the clamping positioning structure, and the clamping positioning structure is fixed together with the fixed clamping plate 3, while avoiding the pipe 4 from protruding, reducing the inter-plate gap of the plate assembly 2, and limiting the axial displacement of one side of the pipe 4. The connection structure is simple, easy to disassemble, and convenient to replace, which greatly shortens the later maintenance time and system shutdown cost loss, and can meet customers' needs for low-cost and fast handling of fault problems.

[0043] Specifically, the fixed clamping plate 3 is provided with a first connection hole 303 for connecting the clamping device 5. The first connection hole 303 is provided to facilitate the connection of the clamping device 5 to the fixed clamping plate 3, has a simple structure, and has high reliability, and ensures that the preload force can be stably applied to the plate assembly 2 and the fixed clamping plate 3, thereby ensuring the sealing of the heat exchanger.

[0044] Specifically, at least two first connection holes 303 are provided, and the first connection holes 303 are symmetrically arranged with respect to the central axis in the length direction of the fixed clamping plate 3, and the first connection holes 303 are adjacent to the long sides of the fixed clamping plate 3. The first connection holes 303 are symmetrically and evenly distributed on the two long sides of the fixed clamping plate 3, so that the pre-tightening force of the clamping device 5 is more evenly applied to the plate assembly 2, thereby avoiding displacement of the plate when the force is uneven, which affects the heat exchange efficiency.

[0045] Specifically, the pipe 4 also includes a connection portion 402 and a through hole 403. The connection portion 402 is used to connect the system pipeline. The through hole 403 is arranged in the middle of the pipe 4 along the axial direction for the fluid to enter and exit the heat exchanger. The pipe 4 is arranged so that the through hole 403 is coaxial with the pipe installation hole 301. The fluid flowing out of the plate assembly 2 flows out of the heat exchanger through the through hole 403 and enters the system pipeline, so that the fluid flow line is isolated from the fixed clamping plate 3, thereby avoiding fluid corrosion and improving the service life of the heat exchanger.

[0046] Specifically, the cross-sections of the mounting portion 401 and the connecting portion 402 are circular rings, a first boss 404 is provided at one end of the mounting portion 401 adjacent to the fixed clamping plate 3, an end of the mounting portion 401 away from the first boss 404 is connected to the connecting portion 402, and a second boss 405 is provided at one end of the connecting portion 402 away from the mounting portion 401. The two ends of the pipe 4 are provided with boss structures, and the connection structure is connected in a snap-fit ​​or clamping manner, which facilitates the disassembly of the pipe 4 from the fixed clamping plate 3 and the system pipeline, and reduces the difficulty of installation and maintenance costs.

[0047] Specifically, the diameter of the first boss 404 is larger than the diameter of the sealing gasket of the plate assembly 2. This arrangement restricts the fluid entering and exiting the plate assembly 2 from leaking out between the first boss 404 and the plate assembly 2, resulting in reduced heat exchange efficiency and fluid corrosion of the fixed clamping plate 3.

[0048] Specifically, one end of the connecting portion 402 away from the mounting portion 401 is threadedly connected to the system pipeline. The threaded connection helps to enhance the sealing and reliability of the connection between the pipe 4 and the system pipeline, has a simple structure, is convenient for quick connection and disassembly, and improves the efficiency of replacing the pipe 4.

[0049] Specifically, the outer diameter of the mounting portion 401 is D1, and the outer diameter of the connecting portion 402 is D2, and D1>D2. Since the outer diameter surface of the mounting portion 401 requires high machining accuracy, the mounting portion 401 and the connecting portion 402 use pipes with different outer diameters, which reduces the machining area of ​​the outer diameter surface of the mounting portion 401, reduces the machining difficulty, helps to reduce the scrap rate and production cost, and facilitates the distinction between the two parts, preventing the wrong connection direction of the connecting pipe 4 during the connection process.

[0050] Specifically, a sealing ring 406 is installed between the first boss 404 and the pipe fixing groove 302, the mounting portion 401 is connected with the sleeve of the pipe mounting hole 301, and a sealing rubber ring is provided between the first boss 404 and the plate assembly 2 to limit fluid leakage. The provision of the sealing ring 406 and the sealing rubber ring can enhance the sealing performance of the clamping structure, ensure that the connection is tighter and leak-free, and adapt to the connection requirements of different sizes and shapes, while buffering external pressure or vibration and protecting the connection from damage; the mounting portion 401 is connected with the sleeve of the pipe mounting hole 301, which expands the connection area between the mounting portion 401 and the fixed clamping plate 3, helps to enhance the connection stability, facilitates the clamping device 5 to fix and disassemble the plate assembly 2, and improves the installation and disassembly speed of the heat exchanger.

[0051] Preferably, the first boss 404 is provided with a sealing groove for installing a sealing ring 406 .

[0052] Preferably, the sealing rubber ring is fixed on the corner hole of the plate assembly. This arrangement facilitates the rapid disassembly of the pipe 4, ensures the sealing effect, helps to increase the speed of maintenance and replacement, and reduces the application cost.

[0053] Specifically, the clamping positioning structure is provided with a rotation preventing structure for limiting the pipe 4 from rotating in the pipe mounting hole 301. The rotation preventing structure can limit the pipe 4 from rotating relative to the pipe fixing groove 302, thereby preventing the connection vibration between the pipe 4 and the plate assembly 2, causing the fluid to overflow onto the fixed clamping plate 3 and cause rust, thereby improving the stability and reliability of the connection and extending the service life of the heat exchanger.

[0054] Specifically, the pipe fixing groove 302 includes a limiting portion and a main body, the two ends of the limiting portion are connected to the main body, and the pipe fixing groove 302 cooperates with the first boss 404 to form a rotation-rejecting structure. The rotation-rejecting structure is arranged by utilizing the shapes of the pipe fixing groove 302 and the first boss 404, is easy to install, and helps to improve the reliability and stability of the structure.

[0055] Preferably, the cross-section of the first boss 404 is the same as the cross-section of the pipe fixing groove 302 .

[0056] Specifically, the limiting portion of the pipe fixing groove 302 is linear, and the main body of the pipe fixing groove 302 is arc-shaped. The pipe fixing groove 302 includes an arc-shaped part and a straight line part, and the straight line part limits the rotation of the first boss 404. The overall structure is simple and easy to process, which helps to improve the stability and reliability of the device.

[0057] Specifically, a limit block 304 is provided in the pipe fixing groove 302, and the limit block 304 is connected to the inner wall of the pipe fixing groove 302. The rotation preventing structure is provided with a key connection mode, and the limit block 304 can bear a large load, which helps to enhance the reliability of the rotation preventing structure.

[0058] Specifically, the cross section of the limit block 304 is arched, the cross section of the first boss 404 is horseshoe-shaped, and the limit block 304 cooperates with the first boss 404 to form a rotation-rejecting structure. This arrangement is simple in structure and easy to process, which helps to reduce the difficulty of parts processing and production costs.

[0059] Preferably, the limiting block 304 is arranged in the horizontal direction of the pipe fixing groove 302 .

[0060] Specifically, the two sides of the movable clamping plate 1 are provided with second connection holes 101, which are coaxial with the first connection hole 303 and are used to connect the clamping device 5. The second connection hole 101 cooperates with the first connection hole 303 to facilitate the clamping and fixing of the clamping device 5, which helps to increase the installation and disassembly speed of the heat exchanger.

[0061] Specifically, the clamping device 5 includes: a clamping bolt 501 and a nut 502. The clamping bolt 501 passes through the first connection hole 303 and the second connection hole 101 and is connected to the nut 502. The nut 502 is arranged adjacent to the movable clamping plate 1. The clamping device 5 is arranged so that the portion of the clamping bolt 501 extending out of the nut 502 is located on the side of the movable clamping plate 1, which facilitates the installation and removal of the pipe 4, improves the installation and maintenance speed, and meets the customer's demand for quick response.

[0062] Specifically, the distance between the movable clamping plate 1 and the fixed clamping plate 3 is the theoretical plate spacing. The movable clamping plate 1 and the fixed clamping plate 3 are strongly pressed by the clamping bolts 501 and the nuts 502, forming a hot and cold alternating fluid heat exchange channel inside the interlayer of the plate assembly 2, thereby improving the heat exchange efficiency.

[0063] Specifically, the pipe 4 is integrally formed of titanium. The pipe 4 is made of titanium, and the corrosion resistance of titanium is utilized to avoid rust damage of the pipe 4 caused by contact with seawater or other corrosive fluids, thereby extending the service life of the heat exchanger, reducing maintenance and downtime, and helping to improve work efficiency.

[0064] Specifically, the plate heat exchanger plates are made of titanium, and the movable clamping plate 1 and the fixed clamping plate 3 are made of carbon steel. This configuration makes the movable clamping plate 1 and the fixed clamping plate 3 that are not in contact with the fluid made of carbon steel, which further reduces the production cost of the heat exchanger due to its low price.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A corrosion-resistant quick-change joint type plate heat exchanger, characterized in that: The invention comprises a movable clamping plate (1), a plate assembly (2), a fixed clamping plate (3), a pipe (4) and a clamping device (5); the fixed clamping plate (3) is in close contact with the plate assembly (2); the other side of the plate assembly (2) is in close contact with the movable clamping plate (1); the movable clamping plate (1) and the fixed clamping plate (3) are connected via the clamping device (5); the fixed clamping plate (3) is provided with a pipe installation hole (301); a pipe fixing groove (302) is provided on one side of the pipe installation hole (301) adjacent to the plate assembly (2); the installation portion (401) of the pipe (4) is snap-connected with the pipe fixing groove (302); a sealing structure is provided between the installation portion (401) and the plate assembly (2) and between the installation portion (401) and the fixed clamping plate (3).

2. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 1, characterized in that: The fixed clamping plate (3) is provided with a first connecting hole (303) for connecting the clamping device (5).

3. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 2, characterized in that: At least two of the first connection holes (303) are provided, and the first connection holes (303) are symmetrically arranged with respect to the central axis in the length direction of the fixed clamping plate (3).

4. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 2, characterized in that: The connecting pipe (4) further comprises a connecting portion (402) and a through hole (403), wherein the connecting portion (402) is used to connect the system pipeline, and the through hole (403) is arranged in the middle of the connecting pipe (4) along the axial direction and is used for fluid to enter and exit the heat exchanger.

5. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 4, characterized in that: The cross-sections of the mounting portion (401) and the connecting portion (402) are circular rings; a first boss (404) is provided at one end of the mounting portion (401) adjacent to the fixed clamping plate (3); an end of the mounting portion (401) away from the first boss (404) is connected to the connecting portion (402); and a second boss (405) is provided at one end of the connecting portion (402) away from the mounting portion (401).

6. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 4, characterized in that: One end of the connection portion (402) away from the installation portion (401) is threadedly connected to a system pipeline.

7. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 4, characterized in that: The outer diameter of the mounting portion (401) is D1, and the outer diameter of the connecting portion (402) is D2, where D1>D2.

8. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 5, characterized in that: The pipe fixing groove (302) comprises a limiting portion and a main body portion, and both ends of the limiting portion are connected to the main body portion. The pipe fixing groove (302) cooperates with the first boss (404) to form a rotation-rejecting structure.

9. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 8, characterized in that: The limiting portion of the connecting pipe fixing groove (302) is linear, and the main body of the connecting pipe fixing groove (302) is arc-shaped.

10. The corrosion-resistant quick-change joint type plate heat exchanger according to claim 8, characterized in that: A sealing ring (406) is installed between the first boss (404) and the pipe fixing groove (302), the mounting portion (401) is connected to the pipe mounting hole (301) by a sleeve, and a sealing rubber ring is provided between the first boss (404) and the plate assembly (2) to limit fluid leakage.

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