Modularized spliced square plate heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, and particularly relates to a modularly-spliced square plate heat exchanger which comprises an upper mounting frame and a lower mounting frame, two first heat exchange modules are mounted between the two mounting frames, and a second heat exchange module is mounted between the two mounting frames and located between the two first heat exchange modules. A fixed pipe is installed on the side, close to the two first heat exchange modules, of the second heat exchange module, a sliding pipe is slidably connected to the outer side of the fixed pipe, a connecting pipe is installed on the side, close to the second heat exchange module, of the first heat exchange module and located at the position corresponding to the sliding pipe, and a pushing structure is installed between the sliding pipe and the fixed pipe. The pushing structure comprises a second fixed annular piece fixed to the outer side of the fixed pipe, and a first fixed annular piece is fixed to the end, close to the second fixed annular piece, of the sliding pipe. Modules needing to be maintained can be independently detached, and the whole heat exchanger system does not need to be shut down and many related modules do not need to be detached.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger technical field, concretely relates to a square plate type heat exchanger of modular splicing. BACKGROUND

[0002] As a kind of efficient heat exchange equipment, plate heat exchanger is widely used in many fields, it has high heat exchange efficiency, small heat loss, compact structure and other advantages, plays an important role in chemical industry, food, medicine, energy and other industries, with the continuous expansion of industrial production scale and the continuous improvement of energy utilization efficiency, square plate type heat exchanger of modular splicing gradually becomes popular product in market because it can flexibly adjust heat exchange capacity according to actual demand;

[0003] The existing square plate type heat exchanger of modular splicing, internal water flow can be circulated after splicing, to some extent, meet the heat exchange demand under different working conditions, however, in actual use process, this kind of heat exchanger still has obvious defects, when one of the modules needs to be repaired and maintained, due to the limitation of its structure design, single module cannot be disassembled alone;

[0004] Common situation is that if one of the modules needs to be repaired, the entire heat exchanger system needs to be shut down, then multiple related modules need to be removed, so that target module can be overhauled, this kind of repair method not only consumes a lot of manpower, material resources and time, increases repair cost, but also seriously affects the continuity of production;

[0005] In summary, the existing square plate type heat exchanger of modular splicing has the problem of single repairability of module, a new design is needed to solve this problem to meet the demand of efficient maintenance of equipment in actual production and use. INVENTION CONTENTS

[0006] The utility model aims at providing a square plate type heat exchanger of modular splicing, which can disassemble the module needing repair alone, without shutting down the entire heat exchanger system and removing multiple related modules, thereby saving manpower, material resources and time, and greatly reducing repair cost.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] A square plate type heat exchanger of modular splicing, comprising upper and lower two mounting frames, two first heat exchange modules are installed between two mounting frames, and second heat exchange module is installed between two first heat exchange modules and between two mounting frames;

[0009] A fixed tube is installed on the side of the second heat exchange module close to the two first heat exchange modules. A sliding tube is slidably connected to the outside of the fixed tube. A connecting tube is installed on the side of the first heat exchange module close to the second heat exchange module and at the position corresponding to the sliding tube. A pushing structure is installed between the sliding tube and the fixed tube.

[0010] The pushing structure includes a second fixed annular plate fixed to the outside of the fixed tube, a first fixed annular plate fixed to one end of the sliding tube near the second fixed annular plate, a spring connecting the second fixed annular plate and the first fixed annular plate, an electromagnet fixed to the side of the second fixed annular plate near the first fixed annular plate, and an iron block disposed on the side of the first fixed annular plate near the second fixed annular plate and at the position corresponding to the electromagnet.

[0011] An electromagnetic three-way valve is installed on the outside of the connecting pipe, and a guide pipe is connected between the two electromagnetic three-way valves.

[0012] The connecting tube and the sliding tube are respectively fixed with a first bonding piece and a second bonding piece at their respective ends that are close to each other. The first bonding piece is provided with a conductive groove on the side of the second bonding piece that is close to the second bonding piece, and the second bonding piece is provided with a conductive protrusion corresponding to the conductive groove on the side of the second bonding piece that is close to the first bonding piece.

[0013] Both the first bonding sheet and the second bonding sheet are made of flexible material.

[0014] The first heat exchange module and the second heat exchange module are provided with T-shaped strips at their top and bottom, and the mounting bracket is provided with a sliding groove corresponding to the T-shaped strips near the inner side of the first heat exchange module and the second heat exchange module.

[0015] A rubber pad is provided on the inner wall of the sliding tube, and the rubber pad is in contact with the outer wall of the fixed tube.

[0016] The technical effects achieved by this utility model are as follows:

[0017] When a module malfunctions, this invention can change the flow direction of the electromagnetic three-way valve and activate the electromagnet to attract the iron block, thereby disconnecting the connecting pipe and the sliding pipe. This allows the module requiring maintenance to be disassembled individually without shutting down the entire heat exchanger system or removing numerous related modules, thus saving manpower, resources, and time, and significantly reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2This is a schematic diagram of the structure between the first heat exchange module, the second heat exchange module, and the guide pipe in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure between the connecting pipe, the guide pipe, and the electromagnetic three-way valve in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure between the first bonding sheet, the spring, and the electromagnet in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure between the spring, the fixed tube, and the sliding tube in this utility model;

[0023] Figure 6 This is a schematic diagram of the structure between the first bonding sheet and the second bonding sheet in this utility model;

[0024] Figure 7 This is a schematic diagram of the structure between the mounting bracket and the T-shaped strip in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. First heat exchange module; 2. Second heat exchange module; 3. Guide pipe; 4. Connecting pipe; 5. First bonding piece; 6. Sliding pipe; 7. Fixed pipe; 8. Spring; 9. Electromagnet; 10. Iron block; 11. Second bonding piece; 12. Conductive protrusion; 13. Conductive groove; 14. Mounting bracket; 15. T-shaped strip; 16. First fixing annular piece; 17. Electromagnetic three-way valve; 18. Second fixing annular piece. Detailed Implementation

[0027] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0028] like Figures 1-7 As shown, a modularly assembled square plate heat exchanger includes two mounting brackets 14, one above the other, two first heat exchange modules 1 installed between the two mounting brackets 14, and a second heat exchange module 2 installed between the two mounting brackets 14 and between the two first heat exchange modules 1.

[0029] A fixed tube 7 is installed on the side of the second heat exchange module 2 near the two first heat exchange modules 1. A sliding tube 6 is slidably connected to the outside of the fixed tube 7. Furthermore, a rubber gasket is provided on the inner wall of the sliding tube 6. The rubber gasket fits against the outer wall of the fixed tube 7. This arrangement improves the sealing between the sliding tube 6 and the fixed tube 7. A connecting tube 4 is installed on the side of the first heat exchange module 1 near the second heat exchange module 2 and at the corresponding position of the sliding tube 6. A pushing structure is installed between the sliding tube 6 and the fixed tube 7.

[0030] After placing the bottom mounting bracket 14, assemble the first heat exchange module 1 and the second heat exchange module 2 onto the bottom mounting bracket 14, and install the top mounting bracket 14 on top of the first heat exchange module 1 and the second heat exchange module 2. Assemble the first heat exchange module 1, the second heat exchange module 2 and the mounting bracket 14 together by means of screws, etc. Water is transferred between the first heat exchange module 1 and the second heat exchange module 2 through the connecting pipe 4, the sliding pipe 6 and the fixed pipe 7, thereby achieving the heat exchange effect.

[0031] See attached document Figures 4-5 The pushing structure includes a second fixed annular plate 18 fixed to the outside of the fixed tube 7, a first fixed annular plate 16 fixed to one end of the sliding tube 6 near the second fixed annular plate 18, a spring 8 connected between the second fixed annular plate 18 and the first fixed annular plate 16, an electromagnet 9 fixed to one side of the second fixed annular plate 18 near the first fixed annular plate 16, and an iron block 10 set on one side of the first fixed annular plate 16 near the second fixed annular plate 18 and at the position corresponding to the electromagnet 9.

[0032] An electromagnetic three-way valve 17 is installed on the outside of the connecting pipe 4, and a guide pipe 3 is connected between the two electromagnetic three-way valves 17.

[0033] When the second heat exchange module 2 needs to be disassembled and replaced, firstly change the flow direction of the solenoid three-way valve 17, thereby breaking the flow between the connecting pipe 4 and the sliding pipe 6, while keeping the guide pipe 3 open. Then, the iron block 10 is attracted by the electromagnet 9, causing the sliding pipe 6 to move towards the fixed pipe 7 and compress the spring 8. At this time, the connecting pipe 4 and the sliding pipe 6 are separated, and the second heat exchange module 2 is extracted separately for repair. After repair, the second heat exchange module 2 is reset and the sliding pipe 6 is aligned with the connecting pipe 4. The electromagnet 9 is closed, so that the electromagnet 9 cancels the attraction of the iron block 10. Through the setting of the spring 8, the sliding pipe 6 moves to contact the connecting pipe 4, and the flow direction of the solenoid three-way valve 17 is changed again, so that the passage between the first heat exchange module 1 and the second heat exchange module 2 is restored, completing the repair of the second heat exchange module 2.

[0034] If maintenance is required on the first heat exchange module 1, the flow direction of the electromagnetic three-way valve 17 close to one of the first heat exchange modules 1 can be closed, thereby allowing water to flow unilaterally between the second heat exchange module 2 and the other first heat exchange module 1, and then the first heat exchange module 1 can be pulled out for maintenance. Furthermore, the top and bottom of the first heat exchange module 1 and the second heat exchange module 2 are provided with T-shaped strips 15, and the mounting bracket 14 is provided with a sliding groove corresponding to the T-shaped strips 15 on the inner side of the first heat exchange module 1 and the second heat exchange module 2. With this arrangement, when the first heat exchange module 1 and the second heat exchange module 2 are reset after maintenance, the first heat exchange module 1 and the second heat exchange module 2 can slide through the T-shaped strips 15 and the sliding grooves on the mounting bracket 14 until the T-shaped strips 15 slide to the horizontal bar, blocking the first heat exchange module 1 and the second heat exchange module 2 from continuing to move. At this time, the connecting pipe 4 and the sliding pipe 6 are just aligned.

[0035] Furthermore, the heat exchanger in this application can consist of more than one second heat exchange module 2. In other words, this application can have multiple second heat exchange modules 2, as long as the flow effect of the guide pipe 3 in the multiple second heat exchange modules 2 is guaranteed.

[0036] See attached document Figure 6 The connecting tube 4 and the sliding tube 6 are respectively fixed with a first bonding piece 5 and a second bonding piece 11 at their close ends. The first bonding piece 5 is provided with a conductive groove 13 on the side close to the second bonding piece 11, and the second bonding piece 11 is provided with a conductive protrusion 12 corresponding to the conductive groove 13 on the side close to the first bonding piece 5. According to the above structure, the first bonding piece 5 and the second bonding piece 11 are both made of flexible material. This arrangement makes the connection and sealing between the second bonding piece 11 and the first bonding piece 5 better, and the material of the second bonding piece 11 and the first bonding piece 5 can be rubber or the like.

[0037] With this arrangement, when the second bonding piece 11 and the first bonding piece 5 come into contact with each other, the sealing of the connecting tube 4 and the sliding tube 6 can be guaranteed. After the conductive protrusion 12 is inserted into the conductive groove 13, a passage is formed between the conductive protrusion 12 and the conductive groove 13. The passage of the electromagnetic three-way valve 17 can only be changed after the internal sensor detects that the conductive protrusion 12 and the conductive groove 13 are in contact.

[0038] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A modularly spliced square plate heat exchanger comprising two mounting frames (14) one above the other, characterized in that: Two first heat exchange modules (1) are installed between the two mounting racks (14), and a second heat exchange module (2) is installed between the two mounting racks (14) and between the two first heat exchange modules (1); A fixed pipe (7) is installed on one side of the second heat exchange module (2) close to the two first heat exchange modules (1), a sliding pipe (6) is slidably connected to the outer side of the fixed pipe (7), a connecting pipe (4) is installed on the side of the first heat exchange module (1) close to the second heat exchange module (2) and at a position corresponding to the sliding pipe (6), and a pushing structure is installed between the sliding pipe (6) and the fixed pipe (7).

2. A modular, hygienic, square plate heat exchanger according to claim 1, characterized in that: The pushing structure comprises a second fixed annular sheet (18) fixed to the outer side of the fixed pipe (7), a first fixed annular sheet (16) fixed to one end of the sliding pipe (6) close to the second fixed annular sheet (18), a spring (8) connected between the second fixed annular sheet (18) and the first fixed annular sheet (16), an electromagnet (9) fixed to one side of the second fixed annular sheet (18) close to the first fixed annular sheet (16), and an iron block (10) provided on one side of the first fixed annular sheet (16) close to the second fixed annular sheet (18) and at a position corresponding to the electromagnet (9). An electromagnetic three-way valve (17) is installed on the outer side of the connecting pipe (4), and a flow guide pipe (3) is connected between the two electromagnetic three-way valves (17).

3. A modular, hygienically leaktight, square plate heat exchanger according to claim 2, characterized in that: First and second adhering sheets (5) and (11) are respectively fixed to the ends of the connecting pipe (4) and the sliding pipe (6) close to each other, an electrically conductive groove (13) is provided on one side of the first adhering sheet (5) close to the second adhering sheet (11), and an electrically conductive convex strip (12) corresponding to the electrically conductive groove (13) is provided on one side of the second adhering sheet (11) close to the first adhering sheet (5).

4. A modular, hygienically leaktight, square plate heat exchanger according to claim 3, characterized in that: The first and second adhering sheets (5) and (11) are made of flexible material.

5. A modular, hygienically leaktight, square plate heat exchanger according to claim 1, characterized in that: T-shaped strips (15) are provided on the top and bottom of the first and second heat exchange modules (1) and (2), and sliding grooves corresponding to the T-shaped strips (15) are provided on the inner sides of the mounting racks (14) close to the first and second heat exchange modules (1) and (2).

6. A modular, hygienically leaktight, square plate heat exchanger according to claim 3, characterized in that: A rubber pad is provided on the inner wall of the sliding pipe (6), and the rubber pad is adhered to the outer wall of the fixed pipe (7).

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