Tubular heat exchanger convenient to maintain

Abstract

The utility model discloses a tubular heat exchanger convenient to maintain, which relates to the technical field of heat exchangers and comprises a shell and two seal heads, and the two seal heads are respectively and fixedly mounted on two side parts of the shell through two mounting mechanisms. In the using process, the tube pass connecting pipe is arranged on the two tube plates through the limiting assembly, the tube pass connecting pipe can be detached from the two tube plates only by releasing limiting of the limiting assembly on the tube pass connecting pipe in the detaching process, the whole installing and detaching process is easy to operate, transverse limiting is achieved through the limiting assembly in the using process, and the stability of the tube pass connecting pipe is improved. When the end sockets need to be installed, the clamping plates are inserted into the sliding grooves to achieve the guiding function, the clamping assemblies are connected with the special-shaped clamping blocks in a clamped mode through the extrusion effect, after clamping, the two special-shaped clamping blocks, the two clamping plates and the two end sockets are driven to synchronously move in the opposite directions through the effect of the sliding assemblies, and the installing and fixing functions of the end sockets are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a tubular heat exchanger which is easy to maintain. Background Art

[0002] The tubular heat exchanger (also known as shell and tube, shell and tube) is the most typical partition-type heat exchanger. It has a long history of industrial application and still occupies a dominant position among all heat exchangers. The tubular heat exchanger mainly consists of a shell, tube bundle, tube sheet and head. The shell is mostly circular, with parallel tube bundles inside. The two ends of the tube bundle are fixed to the tube sheet.

[0003] Patent CN214039672U discloses a tubular heat exchanger in the prior art. A filter element is added to prevent impurities from flowing into the heat flow tube. However, in actual use, the head is fixed by a flange, which makes it inconvenient to perform maintenance on the internal pipes and is relatively cumbersome. To address this problem, a tubular heat exchanger that is easy to maintain is proposed. Utility Model Content

[0004] The purpose of this application is to provide a tubular heat exchanger that is easy to maintain, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present application provides the following technical solution: a tubular heat exchanger that is easy to maintain, comprising a shell and two heads, wherein the two heads are fixedly mounted on two sides of the shell by two mounting mechanisms, and a plurality of tube-pass pipes are arranged in the shell by a clamping mechanism;

[0006] The mounting mechanism includes a fixing plate, which is fixedly mounted on the outer peripheral wall of the shell, and a sliding groove is provided on both sides of the fixing plate. Special-shaped clamping blocks are slidably mounted in the two sliding grooves through sliding components. The outer peripheral walls of the two shells are provided with rectangular plates, and the sides of the two rectangular plates close to each other are fixedly mounted with clamping plates adapted to the sliding grooves, and the two clamping plates are provided with a clamping component adapted to the special-shaped clamping blocks.

[0007] The clamping mechanism includes two tube plates, both of which are fixedly mounted on the circumferential inner wall of the shell. The sides of the two tube plates are each provided with a plurality of mounting holes, and the plurality of pipe-side connecting pipes are each arranged in the plurality of mounting holes through a limiting assembly.

[0008] Preferably, the sliding assembly includes a bidirectional threaded sleeve, a transmission cavity is opened in the fixed plate, the transmission cavity is connected with the two slide grooves through a rotary hole, the bidirectional threaded sleeve is rotatably installed in the two rotary holes, both ends of the bidirectional threaded sleeve are threadedly installed with threaded rods, the ends of the two threaded rods away from each other are respectively fixedly connected to the side portions of the two special-shaped blocks, a driving motor is fixedly installed on the top of the fixed plate, the output shaft of the driving motor extends into the transmission cavity and is fixedly sleeved with a driving bevel gear, and the outer wall of the circumference of the bidirectional threaded sleeve is fixedly sleeved with a driven bevel gear adapted to the driving bevel gear.

[0009] Preferably, the clamping assembly includes two trapezoidal clamping blocks, a movable cavity is opened in the clamping plate, and sliding holes are opened on the opposite inner walls of the movable cavity. The two trapezoidal clamping blocks are respectively slidably installed in the two sliding holes, and a rectangular hole is opened on the side inner wall of the movable cavity. A pull plate is slidably installed in the rectangular hole through a guide unit, and connecting rods are rotatably installed on both sides of the pull plate, and the other ends of the two connecting rods are respectively rotatably installed on the sides of the two trapezoidal clamping blocks.

[0010] Preferably, the guide unit includes a guide shaft, a guide hole is opened on the side of the pull plate, one end of the guide shaft is fixedly installed on the side inner wall of the movable cavity, and the other end of the guide shaft is slidably installed in the guide hole, and a reset spring is provided on the outer wall of the guide shaft.

[0011] Preferably, the limiting assembly includes a plurality of trapezoidal limiting blocks, a plurality of limiting grooves are provided on the inner wall of the peripheral side of the mounting hole, and the plurality of trapezoidal limiting blocks are slidably installed in the plurality of limiting grooves through elastic units, and a plurality of card grooves are provided on the outer wall of the peripheral side of the pipe-pass pipe, and the plurality of card grooves are respectively adapted to the plurality of trapezoidal limiting blocks.

[0012] Preferably, the elastic unit includes a limiting shaft, a through hole is opened on the side of the trapezoidal limiting block, one end of the limiting shaft is fixedly installed on the inner wall of the side of the limiting groove, and the other end of the limiting shaft is slidably installed in the through hole, and a compression spring is sleeved on the limiting shaft.

[0013] Preferably, an operating hole is opened on the inner wall of the side of the limiting groove, an operating plate is slidably installed in the operating hole, and one side of the operating plate is fixedly connected to the side of the trapezoidal limiting block.

[0014] In summary, the technical effects and advantages of the utility model are:

[0015] 1. In the present invention, the pipe-side pipe is set on the two tube sheets by the limit assembly. When disassembling, it is only necessary to release the limit of the pipe-side pipe by the limit assembly to remove it from the two tube sheets. The entire installation and disassembly process is simple to operate, and the lateral limit of the limit assembly during use improves its stability.

[0016] 2. In the present invention, when the head needs to be installed, the guiding function is realized by inserting the clamping plate into the slide groove, and the clamping assembly is clamped with the special-shaped clamping block through the extrusion effect. After clamping, the sliding assembly drives the two special-shaped clamping blocks, two clamping plates, and two heads to move toward each other synchronously, thereby realizing the installation and fixing function of the head. When disassembling, it is only necessary to release the limit of the clamping assembly and the special-shaped clamping block, which is convenient for later maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a tubular heat exchanger that is easy to maintain in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the partial cross-section structure of the fixing plate and the clamping plate in the embodiment of the utility model;

[0020] Figure 3 for Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 This is an enlarged structural diagram of the active bevel gear in the embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the housing in an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the tube sheet in the embodiment of the present utility model;

[0024] Figure 7 It is a schematic diagram of the enlarged structure of the trapezoidal limiting block in the embodiment of the present utility model.

[0025] In the figure: 1. Shell; 2. Head; 3. Fixing plate; 4. Special-shaped clamping block; 5. Bidirectional threaded sleeve; 6. Threaded rod; 7. Driving motor; 8. Active bevel gear; 9. Driven bevel gear; 10. Rectangular plate; 11. Clamping plate; 12. Trapezoidal clamping block; 13. Guide shaft; 14. Pull plate; 15. Return spring; 16. Connecting rod; 17. Tube sheet; 18. Pipe connecting pipe; 19. Trapezoidal limit block; 20. Limit shaft; 21. Compression spring; 22. Operating panel; 23. Slot. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example: Reference Figure 1-Figure 7 The tubular heat exchanger shown is easy to maintain and includes a shell 1 and two heads 2. The two heads 2 are fixedly mounted on two sides of the shell 1 by two mounting mechanisms. A plurality of tube-pass pipes 18 are provided in the shell 1 by a clamping mechanism.

[0028] The mounting mechanism includes a fixing plate 3, which is fixedly mounted on the outer wall of the housing 1. Slide grooves are provided on both sides of the fixing plate 3. Special-shaped clamping blocks 4 are slidably mounted in the two slide grooves through sliding assemblies. Rectangular plates 10 are provided on the outer walls of the two housings 1. Cards 11 adapted to the slide grooves are fixedly mounted on the sides of the two rectangular plates 10 that are close to each other. Snap-on assemblies adapted to the special-shaped clamping blocks 4 are provided in the two clamping plates 11.

[0029] The clamping mechanism includes two tube sheets 17, both of which are fixedly mounted on the inner wall of the shell 1. The sides of the two tube sheets 17 are provided with multiple mounting holes, and multiple pipe-side tubes 18 are arranged in the multiple mounting holes through limiting components.

[0030] With the above structure, when in use, the pipe-side pipe 18 is set on the two tube sheets 17 through the limiting assembly. When disassembling, it is only necessary to release the limiting assembly on the pipe-side pipe 18 to remove it from the two tube sheets 17. The entire installation and disassembly process is simple to operate, and the lateral limiting of the limiting assembly during use improves its stability. When it is necessary to install the head 2, the guide function is realized by inserting the clamping plate 11 into the slide groove, and the clamping assembly is clamped with the special-shaped clamping block 4 through the squeezing action. After clamping, the sliding assembly drives the two special-shaped clamping blocks 4, the two clamping plates 11, and the two heads 2 to move synchronously toward each other, thereby realizing the installation and fixing function of the head 2. When disassembling, it is only necessary to release the limiting of the clamping assembly and the special-shaped clamping block 3, which is convenient for later maintenance operations.

[0031] like Figure 3 and Figure 4 As shown, the sliding assembly includes a bidirectional threaded sleeve 5, a transmission cavity is opened in the fixed plate 3, the transmission cavity and the two slide grooves are connected through a rotary hole, the bidirectional threaded sleeve 5 is rotatably installed in the two rotary holes, and threaded rods 6 are threadedly installed at both ends of the bidirectional threaded sleeve 5, and the ends of the two threaded rods 6 away from each other are respectively fixedly connected to the side parts of the two special-shaped blocks 4. This arrangement can be made by rotating the bidirectional threaded sleeve 5, and the two threaded rods 6 can be driven to move synchronously toward or away from each other under the action of the thread, thereby driving the two special-shaped blocks 4 to achieve the function of synchronous movement toward or away from each other, realizing the movement function of the two special-shaped blocks 4, and a driving motor 7 is fixedly installed on the top of the fixed plate 3. The output shaft of the driving motor 7 extends into the transmission cavity and is fixedly sleeved with an active bevel gear 8, and the outer wall of the circumference of the bidirectional threaded sleeve 5 is fixedly sleeved with a driven bevel gear 9 adapted to the active bevel gear 8.

[0032] Specifically, the driving motor 7 is started to drive the active bevel gear 8 to rotate, and then the bidirectional threaded sleeve 5 is driven to rotate through the meshing action of the active bevel gear 8 and the driven bevel gear 9, and the two special-shaped blocks 4 are driven to move toward or away from each other synchronously under the action of the thread.

[0033] like Figure 3As shown, the clamping assembly includes two trapezoidal clamping blocks 12, a movable cavity is opened in the clamping plate 11, and sliding holes are opened in the opposite inner walls of the movable cavity. The two trapezoidal clamping blocks 12 are slidably installed in the two sliding holes respectively, and a rectangular hole is opened in the side inner wall of the movable cavity. A pull plate 14 is slidably installed in the rectangular hole through a guide unit, and connecting rods 16 are rotatably installed on both sides of the pull plate 14. The other ends of the two connecting rods 16 are rotatably installed on the side parts of the two trapezoidal clamping blocks 12. This arrangement can control the horizontal movement of the pull plate 14, thereby driving the two trapezoidal clamping blocks 12 to move synchronously toward or away from each other under the connection action of the two connecting rods 16, thereby realizing the clamping function with the special-shaped clamping block 4. The guide unit includes a guide shaft 13, a guide hole is opened on the side of the pull plate 14, one end of the guide shaft 13 is fixedly installed on the side inner wall of the movable cavity, and the other end of the guide shaft 13 is slidably installed in the guide hole, and a return spring 15 is sleeved on the outer wall of the peripheral side of the guide shaft 13.

[0034] Specifically, when the card plate 11 slides inward to an appropriate position, the special-shaped card block 4 squeezes the two trapezoidal card blocks 12 to make them move into the active cavity. When they move to an appropriate position, the special-shaped card block 3 releases the limit of the trapezoidal card block 12. At this time, the elastic action of the reset spring 15 can drive the pull plate 14 to reset, and then drive the two trapezoidal card blocks 12 to reset under the connection action of the two connecting rods 16, thereby realizing the clamping connection with the special-shaped card block 4.

[0035] like Figure 6 and Figure 7 As shown, the limiting assembly includes a plurality of trapezoidal limiting blocks 19, and a plurality of limiting grooves are provided on the inner wall of the peripheral side of the mounting hole. The plurality of trapezoidal limiting blocks 19 are slidably installed in the plurality of limiting grooves through elastic units. The peripheral outer wall of the pipe-side pipe 18 is provided with a plurality of card grooves 23, and the plurality of card grooves 23 are respectively adapted to the plurality of trapezoidal limiting blocks 19. In this way, the lateral limiting function of the pipe-side pipe 18 can be achieved by controlling the card connection between the trapezoidal limiting blocks 19 and the card grooves 23 to prevent it from lateral movement. The elastic unit includes a limit shaft 20, a through hole is provided on the side of the trapezoidal limit block 19, one end of the limit shaft 20 is fixedly mounted on the side inner wall of the limit groove, and the other end of the limit shaft 20 is slidably mounted in the through hole, a compression spring 21 is sleeved on the limit shaft 20, an operating hole is provided on the side inner wall of the limit groove, an operating plate 22 is slidably mounted in the operating hole, and one side of the operating plate 22 is fixedly connected to the side of the trapezoidal limit block 19.

[0036] Specifically, the multiple operating plates 22 are squeezed synchronously in the direction away from the axis, thereby driving the two trapezoidal limit blocks 19 to move synchronously in the direction away from the axis, releasing the engagement with the slot 23, and then the pipe-pass pipe 18 can be pulled out. During the pulling and pulling process, the slot 23 at the other end squeezes the trapezoidal limit block 19, causing it to slide into the limit slot to avoid getting stuck.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tubular heat exchanger that is easy to maintain, comprising a shell (1) and two heads (2), characterized in that: The two sealing heads (2) are fixedly mounted on two sides of the shell (1) through two mounting mechanisms, and a plurality of pipe-side pipes (18) are arranged in the shell (1) through a clamping mechanism; The mounting mechanism comprises a fixing plate (3), the fixing plate (3) being fixedly mounted on the peripheral outer wall of the shell (1), a sliding groove being provided on both sides of the fixing plate (3), and a special-shaped card block (4) being slidably mounted in the two sliding grooves through a sliding assembly, a rectangular plate (10) being provided on the peripheral outer walls of the two shells (1), and a card plate (11) adapted to the sliding groove being fixedly mounted on the mutually adjacent sides of the two rectangular plates (10), and a clamping assembly adapted to the special-shaped card block (4) being provided in the two card plates (11); The clamping mechanism includes two tube sheets (17), both of which are fixedly mounted on the inner wall of the circumferential side of the shell (1), and the sides of the two tube sheets (17) are each provided with a plurality of mounting holes, and the plurality of tube-side pipes (18) are each arranged in the plurality of mounting holes through a limiting assembly.

2. The tubular heat exchanger easy to maintain according to claim 1, characterized in that: The sliding assembly includes a bidirectional threaded sleeve (5), a transmission cavity is provided in the fixed plate (3), the transmission cavity is communicated with the two slide grooves through a rotary hole, the bidirectional threaded sleeve (5) is rotatably installed in the two rotary holes, both ends of the bidirectional threaded sleeve (5) are threadedly installed with threaded rods (6), the ends of the two threaded rods (6) away from each other are fixedly connected to the sides of the two special-shaped blocks (4), a driving motor (7) is fixedly installed on the top of the fixed plate (3), the output shaft of the driving motor (7) extends into the transmission cavity and is fixedly sleeved with a driving bevel gear (8), and the outer wall of the circumferential side of the bidirectional threaded sleeve (5) is fixedly sleeved with a driven bevel gear (9) adapted to the driving bevel gear (8).

3. The tubular heat exchanger easy to maintain according to claim 1, characterized in that: The clamping assembly includes two trapezoidal clamping blocks (12), a movable cavity is provided in the clamping plate (11), and sliding holes are provided on the opposite inner walls of the movable cavity. The two trapezoidal clamping blocks (12) are respectively slidably installed in the two sliding holes, and a rectangular hole is provided on the side inner wall of the movable cavity. A pull plate (14) is slidably installed in the rectangular hole through a guide unit, and connecting rods (16) are rotatably installed on both sides of the pull plate (14), and the other ends of the two connecting rods (16) are respectively rotatably installed on the sides of the two trapezoidal clamping blocks (12).

4. The tubular heat exchanger easy to maintain according to claim 3, characterized in that: The guide unit includes a guide shaft (13), a guide hole is opened on the side of the pull plate (14), one end of the guide shaft (13) is fixedly installed on the inner wall of the side of the movable cavity, and the other end of the guide shaft (13) is slidably installed in the guide hole, and a reset spring (15) is sleeved on the outer wall of the peripheral side of the guide shaft (13).

5. The tubular heat exchanger easy to maintain according to claim 1, characterized in that: The limiting assembly comprises a plurality of trapezoidal limiting blocks (19), a plurality of limiting grooves are provided on the inner wall of the peripheral side of the mounting hole, and the plurality of trapezoidal limiting blocks (19) are respectively slidably installed in the plurality of limiting grooves through elastic units, and a plurality of clamping grooves (23) are provided on the outer wall of the peripheral side of the pipe-side pipe (18), and the plurality of clamping grooves (23) are respectively adapted to the plurality of trapezoidal limiting blocks (19).

6. The tubular heat exchanger easy to maintain according to claim 5, characterized in that: The elastic unit includes a limiting shaft (20), a through hole is provided on the side of the trapezoidal limiting block (19), one end of the limiting shaft (20) is fixedly mounted on the inner wall of the side of the limiting groove, and the other end of the limiting shaft (20) is slidably mounted in the through hole, and a compression spring (21) is sleeved on the limiting shaft (20).

7. The tubular heat exchanger easy to maintain according to claim 5, characterized in that: An operating hole is provided on the inner wall of the side of the limiting groove, an operating plate (22) is slidably installed in the operating hole, and one side of the operating plate (22) is fixedly connected to the side of the trapezoidal limiting block (19).

Images