Plate-shell type heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a lamella heat exchanger which comprises a tank body, a cold fluid outlet pipe is fixedly connected to the outer wall of the tank body, a cold fluid inlet pipe is fixedly connected to one side of the outer wall of the tank body, a cover plate is connected to the inner wall of the tank body in a sliding mode, and a fixing plate is fixedly connected to the interior of the tank body. A mounting assembly is arranged in the fixing plate; a sealing assembly is arranged on the inner wall of the tank body, the mounting assembly comprises a mounting base, the outer wall of the mounting base is fixedly connected to the interior of the fixing plate, a connecting base is slidably connected to the interior of the mounting base, a heat exchange plate is fixedly connected to the outer wall of the connecting base, a pressing rod is slidably connected to the interior of the connecting base, and the outer wall of the pressing rod is sleeved with a first spring. According to the heat exchange plate, an operator only needs to press the pressing rod to enable the first plug pin to be separated from the clamping groove, the heat exchange plate can be easily replaced, complex tools are not needed, the replacement time is greatly shortened, and the equipment maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a plate-and-shell heat exchanger. Background Technology

[0002] A plate-and-shell heat exchanger is a highly efficient heat exchange device that combines the advantages of plate heat exchangers and shell-and-tube heat exchangers. It has wide applications in many industrial fields, such as petrochemicals, power, pharmaceuticals, and food processing. In the petrochemical industry, precise and efficient temperature control is required in the heating and cooling of crude oil and in the heat exchange process of various chemical products. Plate-and-shell heat exchangers can achieve rapid heat transfer between different fluids to meet complex process requirements. In the power industry, they are used to cool the heat generated by generators, transformers, and other equipment to ensure that the power equipment operates within its normal operating temperature range and to guarantee the stable operation of the power system.

[0003] In the existing technology, plate and shell heat exchangers are usually composed of main parts such as plate bundles, shell, end caps, and tube boxes. They are composed of a series of corrugated plates, and flow channels are formed between the plates. Two heat exchange fluids flow in the flow channels on both sides of the plates and exchange heat through the plates. Existing products have the problem that it is troublesome to replace the heat exchange plates after a period of use, which makes the working efficiency relatively low. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a plate-and-shell heat exchanger, which aims to improve the problem of relatively low working efficiency caused by the inconvenience of replacing heat exchange plates.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plate-shell heat exchanger, comprising a tank, a cold fluid outlet pipe fixedly connected to one side of the tank, a cold fluid inlet pipe fixedly connected to the other side of the tank, a cover plate slidably connected to the inner wall of the tank, a fixing plate fixedly connected to the inside of the tank, and an installation assembly disposed inside the fixing plate; a sealing assembly disposed on the inner wall of the tank, the installation assembly comprising a mounting base, the outer wall of the mounting base fixedly connected to the inside of the fixing plate, a connecting base slidably connected to the inside of the mounting base, a heat exchange plate fixedly connected to the outer wall of the connecting base, a pressing rod slidably connected to the inside of the connecting base, a spring sleeved on the outer wall of the pressing rod, a pin fixedly connected to one end of the pressing rod, a steel ball disposed inside the connecting base, the outer wall of the pin slidably connected to the inside of the connecting base, a hot fluid inlet pipe fixedly connected to one side of the cover plate, and a hot fluid outlet pipe fixedly connected to the other side of the cover plate.

[0006] Furthermore, the sealing assembly includes a sealing ring, the outer wall of which is fixedly connected to the inner wall of the tank.

[0007] Furthermore, a slot seat is fixedly connected to one side of the outer wall of the tank, an insert block is slidably connected inside the slot seat, a threaded rod is threadedly connected inside the insert block, and a knob is fixedly connected to one end of the threaded rod.

[0008] Furthermore, a second spring is provided at one end of the threaded rod, a second pin is slidably connected to the inner wall of the insertion block, a steel ball is provided inside the insertion block, and the outer wall of the second pin is slidably connected to the outer wall of the steel ball.

[0009] Furthermore, one end of the spring is fixedly connected to the outer wall of the pressing rod, and the other end of the spring is fixedly connected to the inside of the connecting seat.

[0010] Furthermore, the outer wall of the pin is slidably connected to one side of the outer wall of the steel ball, and the outer wall of the steel ball is slidably connected to the slot inside the mounting base.

[0011] Furthermore, one end of the second spring is fixedly connected to one end of the threaded rod, and the other end of the second spring is fixedly connected to one end of the second pin.

[0012] Furthermore, the outer wall of the steel ball is slidably connected to the slot inside the slot seat.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the operator only needs to press the pressing rod to disengage the pin from the slot, which allows for easy replacement of the heat exchange plate without complicated tools, significantly shortening the replacement time and improving equipment maintenance efficiency. To install the heat exchange plate, insert the connecting seat into the mounting seat. The mounting seat presses the pressing rod to compress the spring. When the connecting seat is fully inserted, the pin, under the elastic force of the spring, is engaged with the mounting seat slot by the steel ball, fixing the connecting seat and the mounting seat, thereby quickly fixing the heat exchange plate. The good sealing performance of the sealing ring ensures that the fluid will not leak into the environment, avoiding product contamination and ensuring the quality and safety of medicines. It also prevents fluid leakage from causing environmental pollution, meeting environmental protection requirements.

[0015] 2. In this utility model, the insert block is inserted into the slot seat, and the steel ball inside the insert block is locked into the slot of the slot seat under the action of the second spring and the second pin, thereby fixing the cover plate. This not only further enhances the connection stability between the cover plate and the tank body, but also indirectly ensures the sealing effect. The locking structure between the slot seat and the insert block can also prevent the cover plate from loosening, maintain the sealing state of the sealing ring, ensure the long-term stable operation of the equipment, reduce equipment failure and downtime caused by sealing problems, and improve production efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a plate-shell heat exchanger proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the heat exchange plate portion of a plate-shell heat exchanger proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the mounting base structure of a plate-shell heat exchanger proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of a portion of the spring structure of a plate-shell heat exchanger proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the two-part spring structure of a plate-shell heat exchanger proposed in this utility model.

[0021] Legend:

[0022] 1. Tank body; 2. Hot fluid inlet pipe; 3. Hot fluid outlet pipe; 4. Cold fluid inlet pipe; 5. Cold fluid outlet pipe; 6. Cover plate; 7. Sealing ring; 8. Heat exchange plate; 9. Fixing plate; 10. Connecting seat; 11. Pressing rod; 12. Spring 1; 13. Pin 1; 14. Steel ball; 15. Mounting seat; 16. Knob; 17. Insert block; 18. Spring 2; 19. Pin 2; 20. Steel ball; 21. Slot seat; 22. Threaded rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 4This utility model provides an embodiment of a plate-and-shell heat exchanger, including a tank 1. The tank 1 is used to house heat exchange plates 8, fluid, and other components. A cold fluid outlet pipe 5 is fixedly connected to one side of the tank 1, and a cold fluid inlet pipe 4 is fixedly connected to the other side of the tank 1. The diameter and length of the inlet pipe 4 are determined according to the fluid flow rate and equipment layout requirements, and are used for the entry and exit of the cold fluid. A cover plate 6 is slidably connected to the inner wall of the tank 1. The cover plate 6 closes one end of the tank 1, providing a channel for the entry and exit of the hot fluid, and together with the tank 1, forms a sealed space. A fixing plate 9 is fixedly connected inside the tank 1, serving as a support and positioning element. An installation assembly is provided inside the fixing plate 9. The inner wall of the tank 1 is provided with... The mounting assembly includes a sealing component and a mounting base 15. The mounting base 15 has an internal cavity and a slot to accommodate components such as a connecting base 10 and a pin 13. The outer wall of the mounting base 15 is fixedly connected to the inside of a fixing plate 9. The connecting base 10 is slidably connected inside the mounting base 15. The heat exchange plate 8 on the outer wall of the connecting base 10 is aligned with the mounting base 15, and then the connecting base 10 is inserted along the cavity of the mounting base 15. The heat exchange plate 8 is fixedly connected to the outer wall of the connecting base 10. A pressing rod 11 is slidably connected inside the connecting base 10. The pressing rod 11 inside the connecting base 10 is compressed by the mounting base 15 and slides along a set track within the connecting base 10. A spring-loaded spring is sleeved on the outer wall of the pressing rod 11. Spring 12 is compressed, and spring 12 is sleeved on the outer wall of pressing rod 11. One end of pressing rod 11 is fixedly connected to pin 13, which is used to lock and unlock connecting seat 10 and mounting seat 15. Steel ball 14 is provided inside connecting seat 10 to assist in locking and unlocking pin 13 and improve connection stability. The outer wall of pin 13 is slidably connected inside connecting seat 10. Hot fluid inlet pipe 2 is fixedly connected to one side of the inside of cover plate 6, and hot fluid outlet pipe 3 is fixedly connected to the other side of the inside of cover plate 6. The sealing assembly includes sealing ring 7, which is in close contact with cover plate 6, is compressed and deformed, and fills the small gap between tank 1 and cover plate 6 to form a good seal. The sealing ring 7 is fixedly connected to the inner wall of the tank 1. One end of the spring 12 is fixedly connected to the outer wall of the pressing rod 11. After the connecting seat 10 is fully inserted into the mounting seat 15, the pressing rod 11 rebounds under the elastic force of the spring 12. The pin 13, which is fixedly connected to one end of the pressing rod 11, slides inside the connecting seat 10 and, with the assistance of the steel ball 14, is inserted into the groove inside the mounting seat 15, firmly connecting the connecting seat 10 and the mounting seat 15 together, thus completing the installation of the heat exchange plate 8. The other end of the spring 12 is fixedly connected to the inside of the connecting seat 10. The outer wall of the pin 13 is slidably connected to one side of the outer wall of the steel ball 14, and the outer wall of the steel ball 14 is slidably connected to the groove inside the mounting seat 15.

[0025] Reference Figure 1 and Figure 5A slot seat 21 is fixedly connected to one side of the outer wall of the tank body 1. A plug 17 is slidably connected inside the slot seat 21. The plug 17 is inserted into the slot of the slot seat 21. A threaded rod 22 is threadedly connected inside the plug 17. During insertion, the steel ball 20 inside the plug 17 slides into the plug 17 under the pressure of the inner wall of the slot seat 21, compressing the second spring 18. The second spring 18 drives the second pin 19 to move. A knob 16 is fixedly connected to one end of the threaded rod 22. Rotating the knob 16 drives the threaded rod 22 to rotate. The second spring 18 is provided at one end of the threaded rod 22. After the plug 17 is fully inserted into the slot seat 21, the steel ball 20 is locked into the slot under the elastic force of the second spring 18. The slot inside the seat 21 locks the insert 17 to the slot seat 21, thereby fixing the cover plate 6 and ensuring the sealing of the equipment. The inner wall of the insert 17 is slidably connected to the second pin 19. The insert 17 is equipped with a steel ball 20. The threaded rod 22 moves inside the insert 17 during rotation, compressing the second spring 18. The second spring 18 drives the second pin 19 to move further. The second pin 19 pushes the steel ball 20 out of the slot inside the slot seat 21. The outer wall of the second pin 19 is slidably connected to the outer wall of the steel ball 20. One end of the second spring 18 is fixedly connected to one end of the threaded rod 22, and the other end of the second spring 18 is fixedly connected to one end of the second pin 19. The outer wall of the steel ball 20 is slidably connected to the slot inside the slot seat 21.

[0026] Working principle: Cold fluid enters tank 1 through cold fluid inlet pipe 4. Inside tank 1, the cold fluid flows in the channels between heat exchange plates 8. Hot fluid enters through hot fluid inlet pipe 2, passes through cover plate 6, and enters the channel on the other side of heat exchange plate 8 inside tank 1. Due to the good thermal conductivity of heat exchange plate 8, when the cold and hot fluids flow on both sides of heat exchange plate 8, heat is transferred from the hot fluid to the cold fluid through heat exchange plate 8. After heat exchange, the temperature of the cold fluid increases and flows out through cold fluid outlet pipe 5; the temperature of the hot fluid decreases and flows out through hot fluid outlet pipe 3. When heat exchange plate 8 needs to be installed, align the heat exchange plate 8 on the outer wall of connecting seat 10 with mounting seat 15, and then insert connecting seat 10 into mounting seat 15. During the process, the pressing rod 11 inside the connecting seat 10 is squeezed by the mounting seat 15. The pressing rod 11 slides inside the connecting seat 10, and the spring 12 sleeved on the outer wall of the pressing rod 11 is compressed. When the connecting seat 10 is fully inserted into the mounting seat 15, the pressing rod 11 rebounds under the elastic force of the spring 12. The pin 13 fixedly connected to one end of the pressing rod 11 slides inside the connecting seat 10 and, with the assistance of the steel ball 14, engages with the slot inside the mounting seat 15, firmly connecting the connecting seat 10 and the mounting seat 15 together, thus completing the installation of the heat exchange plate 8. Similarly, when the heat exchange plate 8 needs to be replaced, the operator presses the pressing rod 11, and the pressing rod 11 overcomes the elastic force of the spring 12 and slides downward, causing the pin 11 to... 3. Remove the heat exchange plate 8 from the mounting base 15 by pulling the connecting seat 10 out of the mounting base 15. Then, install the new heat exchange plate 8 on the outer wall of the connecting seat 10. Repeat the above installation process to complete the replacement of the heat exchange plate 8. The sealing ring 7 is fixed to the inner wall of the tank 1. During equipment operation, the sealing ring 7 is in close contact with the cover plate 6 to prevent leakage of cold and hot fluids. When the cover plate 6 is installed on the tank 1, the sealing ring 7 is squeezed and deformed, filling the tiny gap between the tank 1 and the cover plate 6 to form a good seal. The cover plate 6 is fixed to one side of the outer wall of the tank 1 by components such as the slot seat 21 and the insert block 17. Initially, the insert block 17 is inserted into the slot seat 21. Under the action of spring 18 and pin 19, the steel ball 20 of the part is engaged in the groove inside the slot seat 21, locking the insert block 17 to the slot seat 21, thereby fixing the cover plate 6. When it is necessary to remove the cover plate 6, the operator turns the knob 16. The knob 16 is fixedly connected to the threaded rod 22, which is threadedly connected to the insert block 17. Turning the knob 16 causes the threaded rod 22 to rotate, and the threaded rod 22 moves inside the insert block 17, compressing spring 18. Spring 18 drives pin 19 to move, and pin 19 pushes the steel ball 20 out of the groove inside the slot seat 21. At this time, the insert block 17 can be pulled out of the slot seat 21, thereby releasing the fixation of the cover plate 6, which facilitates the inspection, maintenance or cleaning of the inside of the equipment.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plate-and-shell heat exchanger, comprising a tank (1), characterized in that: A cold fluid outlet pipe (5) is fixedly connected to one side of the tank (1), and a cold fluid inlet pipe (4) is fixedly connected to the other side of the tank (1). A cover plate (6) is slidably connected to the inner wall of the tank (1). A fixing plate (9) is fixedly connected to the inside of the tank (1). An installation component is provided inside the fixing plate (9). A sealing component is provided on the inner wall of the tank (1). The installation assembly includes a mounting base (15), the outer wall of which is fixedly connected to the inside of a fixing plate (9). A connecting base (10) is slidably connected inside the mounting base (15). A heat exchange plate (8) is fixedly connected to the outer wall of the connecting base (10). A pressing rod (11) is slidably connected inside the connecting base (10). A spring (12) is sleeved on the outer wall of the pressing rod (11). A pin (13) is fixedly connected to one end of the pressing rod (11). A steel ball (14) is provided inside the connecting base (10). The outer wall of the pin (13) is slidably connected inside the connecting base (10). A hot fluid inlet pipe (2) is fixedly connected to one side of the inside of the cover plate (6). A hot fluid outlet pipe (3) is fixedly connected to the other side of the inside of the cover plate (6).

2. A plate-and-shell heat exchanger according to claim 1, characterized in that: The sealing assembly includes a sealing ring (7), the outer wall of which is fixedly connected to the inner wall of the tank (1).

3. A plate-and-shell heat exchanger according to claim 2, characterized in that: A slot seat (21) is fixedly connected to one side of the outer wall of the tank (1). A plug (17) is slidably connected inside the slot seat (21). A threaded rod (22) is threadedly connected inside the plug (17). A knob (16) is fixedly connected to one end of the threaded rod (22).

4. A plate-and-shell heat exchanger according to claim 3, characterized in that: One end of the threaded rod (22) is provided with a spring (18), the inner wall of the insert (17) is slidably connected with a pin (19), the insert (17) is provided with a steel ball (20), and the outer wall of the pin (19) is slidably connected to the outer wall of the steel ball (20).

5. A plate-and-shell heat exchanger according to claim 1, characterized in that: One end of the spring (12) is fixedly connected to the outer wall of the pressing rod (11), and the other end of the spring (12) is fixedly connected to the inside of the connecting seat (10).

6. A plate-and-shell heat exchanger according to claim 1, characterized in that: The outer wall of the pin (13) is slidably connected to one side of the outer wall of the steel ball (14), and the outer wall of the steel ball (14) is slidably connected to the slot inside the mounting base (15).

7. A plate-and-shell heat exchanger according to claim 4, characterized in that: One end of the second spring (18) is fixedly connected to one end of the threaded rod (22), and the other end of the second spring (18) is fixedly connected to one end of the second pin (19).

8. A plate-and-shell heat exchanger according to claim 4, characterized in that: The outer wall of the steel ball (20) is slidably connected to the slot inside the slot seat (21).

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