Novel plate heat exchanger connecting pipe structure

Abstract

The utility model provides a novel plate heat exchanger connecting pipe structure which comprises a plate heat exchanger body, a quick-connection female head is arranged on the front face of the plate heat exchanger body, the quick-connection female head and a quick-connection male head are connected in an inserted mode and fixed through a clamping compression spring, and the quick-connection male head and the quick-connection female head are fixed through the clamping compression spring after being connected in an inserted mode. The installation mode is convenient, fast and convenient to disassemble and assemble, the pipeline installation efficiency is effectively improved, meanwhile, the sealing performance of connection of the quick-connection female head and the quick-connection male head can be effectively improved through the arranged O-shaped sealing ring, water cannot leak after the quick-connection female head and the quick-connection male head are connected, a wrench or other tools are not needed in the installation mode, and the installation cost is reduced. A wrench position does not need to be reserved, the situation that parts at the two ends are abraded when the product is transported and a unit vibrates during operation is avoided through the installation mode that the clamping compression spring is fixed in a compression mode, and the situation that a connector is not tightly sealed due to abrasion during installation is avoided through the oppositely-inserted installation mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection structures, and particularly relates to a novel tube connection structure of a plate heat exchanger. Background Art

[0002] As an efficient heat energy exchange device, the plate heat exchanger has a unique design and many advantages, so it is widely used in air source heat pump units; generally used for three directions of refrigerant-refrigerant heat exchange, refrigerant-water heat exchange, and water-water heat exchange. Two fluids at different temperatures enter two different channels of the heat exchanger respectively. They are isolated by metal plates, but heat can be transferred through the plates. The high-temperature fluid releases heat to the metal plate, and then the metal plate conducts the heat to the low-temperature fluid on the other side, so as to realize the transfer of heat from the high-temperature fluid to the low-temperature fluid.

[0003] In the application of air source heat pump units, most of the water circuits of plate heat exchangers are installed by means of threaded unions; as shown in the attached instructions Figure 1 As shown, since its installation does not require welding, it is widely used in pipeline engineering installations. However, the above installation method has the following problems: 1. Material compatibility problem: The main body of the plate heat exchanger is usually made of corrosion-resistant and high-strength steel, while most of the water circuit connection parts are made of brass. However, since the hardness of steel is higher than that of brass, during the installation process, tightening the thread may cause the brass interface to wear due to uneven force, which may affect the sealing performance and service life in the long term; 2. Loosening problem caused by vibration: During the transportation and operation of air source heat pump units, vibrations will inevitably occur, especially the bumps during the transportation stage and the continuous micro-vibrations during operation, which may cause cumulative damage to the threaded unions, resulting in their gradual loosening or even failure, increasing the leakage risk; 3. Leak detection test and assembly difficulty: The installation of threaded unions requires high sealing performance. However, in the actual production and assembly process, due to operation errors or slight deformations of components, it is often difficult to achieve an ideal sealing state during the first installation, so secondary adjustment or tightening is required to ensure no leakage. This not only reduces production efficiency, but also increases additional labor costs and quality control difficulties. The above three problems will cause water leakage in the unit, affect the qualification rate of the whole machine, and increase the after-sales maintenance cost of the manufacturer. Content of the Utility Model

[0004] The purpose of the utility model is to provide a novel tube connection structure of a plate heat exchanger, aiming to solve the problems proposed in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A novel tube connection structure of a plate heat exchanger, including a plate heat exchanger body, a quick-connect female head is arranged on the front surface of the plate heat exchanger body, and the quick-connect female head is inserted into and fixed with a quick-connect male head through a clamping spring;

[0006] The quick-connect female connector comprises a connecting pipe arranged on the front side of the plate heat exchanger body, and a first flange is arranged at the end of the connecting pipe.

[0007] As a preferred technical solution of the utility model, the quick-connect male connector includes a plug-in tube, a right-angle elbow and a water pipe. A second flange is provided at the end of the plug-in tube. The plug-in tube is fixedly installed on the outside of the plug-in end of the right-angle elbow. The size of the first flange matches the size of the second flange. The diameter of the plug-in end of the right-angle elbow matches the inner diameter of the connecting pipe. The plug-in end of the right-angle elbow is movably plugged into the connecting pipe. The water pipe is connected to the connecting end of the right-angle elbow, and the clamping compression spring is clamped and fixed on the first flange and the second flange.

[0008] As a preferred technical solution of the utility model, the clamping compression spring includes a compression spring body, a plurality of compression grooves are formed on the inner side of the compression spring body, and the width of the compression grooves is the same as the sum of the thickness of the first flange and the second flange.

[0009] As a preferred technical solution of the utility model, both ends of the compression spring body are provided with easy buckle ends.

[0010] As a preferred technical solution of the utility model, a sealing groove is provided at the end of the plug-in end of the right-angle elbow, and an O-ring is installed in the sealing groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: by plugging the quick-connect male head and the quick-connect female head together and then fixing them through a clamping compression spring, this installation method is convenient and fast, easy to disassemble and assemble, and effectively improves the efficiency of pipeline installation. At the same time, the set O-ring can effectively improve the sealing of the connection between the quick-connect female head and the quick-connect male head, so that the quick-connect female head and the quick-connect male head will not leak after being connected. Moreover, this installation method does not require a wrench or other tools, and does not require a reserved wrench position. Moreover, the installation method of crimping and fixing with a clamping compression spring ensures that the above-mentioned product will not cause wear of the parts at both ends during transportation and vibration of the unit operation, and the plug-in installation method will not cause loose sealing at the interface due to wear during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the water pipe structure of a plate heat exchanger in the prior art;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the plate heat exchanger body of the utility model;

[0016] Figure 4 For the utility model Figure 2 A schematic diagram of the enlarged structure at A;

[0017] Figure 5 It is a partial cross-sectional structural schematic diagram of the utility model.

[0018] In the figure: 1. Plate heat exchanger body; 2. Quick-connect female connector; 21. Connecting pipe; 22. First flange; 3. Quick-connect male connector; 31. Plug-in pipe; 32. Right-angle elbow; 33. Water pipe; 34. Second flange; 4. Clip-on compression spring; 41. Compression spring body; 42. Compression groove; 43. Easy-to-fasten end; 5. O-ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 - 5 The utility model provides the following technical solutions: a novel plate heat exchanger pipe structure, comprising a plate heat exchanger body 1, a quick-connect female head 2 is arranged on the front of the plate heat exchanger body 1, the quick-connect female head 2 is plugged with a quick-connect male head 3 and fixed by a clamping spring 4;

[0021] The quick-connect female connector 2 comprises a connecting pipe 21 arranged on the front side of the plate heat exchanger body 1 , and a first flange 22 is arranged at the end of the connecting pipe 21 .

[0022] In this embodiment, the quick-connect male connector 3 includes a plug-in tube 31, a right-angle elbow 32, and a water pipe 33. A second flange 34 is provided at the end of the plug-in tube 31. The plug-in tube 31 is fixedly installed on the outside of the plug-in end of the right-angle elbow 32. The size of the first flange 22 matches the size of the second flange 34. The diameter of the plug-in end of the right-angle elbow 32 matches the inner diameter of the connecting tube 21. The plug-in end of the right-angle elbow 32 is movably plugged into the connecting tube 21. The water pipe 33 is connected to the connecting end of the right-angle elbow 32. The clamping spring 4 is clamped and fixed on the first flange 22 and the second flange 34.

[0023] Specifically, the plug-in end of the right-angle elbow 32 is inserted into the connecting pipe 21 and the first flange 22 and the second flange 34 are made to fit together, and then the first flange 22 and the second flange 34 can be crimped and fixed by the clamping spring 4. This fixing method is simple and convenient, and will not cause wear of parts due to vibration. At the same time, this installation method does not require tightening the nut to cause wear of parts, thereby effectively improving the service life of the unit.

[0024] In this embodiment, the clamping compression spring 4 includes a compression spring body 41 , and a plurality of compression grooves 42 are formed inside the compression spring body 41 . The width of the compression grooves 42 is equal to the sum of the thickness of the first flange 22 and the second flange 34 .

[0025] Specifically, the plug-in end of the right-angle elbow 32 is installed in the connecting pipe 21 and the first flange 22 and the second flange 34 are made to fit together. Then, the first flange 22 and the second flange 34 can be compressed and fixed through the compression groove 42 on the inner side of the compression spring body 41. This method is simple and convenient, which is conducive to improving the installation efficiency of the pipeline.

[0026] In this embodiment, both ends of the compression spring body 41 are provided with easy-fastening ends 43 .

[0027] Specifically, the easy-fastening end 43 is provided to facilitate pulling the compression spring body 41 so that the first flange 22 and the second flange 34 are fastened into the clamping groove 42 .

[0028] In this embodiment, a sealing groove is provided at the end of the plug-in end of the right-angle elbow 32, and an O-ring 5 is installed in the sealing groove.

[0029] Specifically, the O-ring 5 can improve the sealing performance of the connection between the right-angle elbow 32 and the connecting pipe 21, thereby preventing water leakage of the pipeline after the quick-connect female connector 2 and the quick-connect male connector 3 are plugged and installed.

[0030] Working principle: by plugging the quick-connect male head 3 and the quick-connect female head 2 together and fixing them through the clamping compression spring 4, this installation method is convenient and fast, easy to disassemble and assemble, and effectively improves the efficiency of pipeline installation. At the same time, the set O-ring 5 can effectively improve the sealing of the connection between the quick-connect female head 2 and the quick-connect male head 3, so that there will be no water leakage after the quick-connect female head 2 and the quick-connect male head 3 are connected. Moreover, this installation method does not require a wrench or other tools, and no wrench position needs to be reserved. In addition, the installation method of crimping and fixing with the clamping compression spring 4 ensures that the above-mentioned product will not cause wear of the parts at both ends during transportation and unit operation vibration, and the plug-in installation method will not cause loose sealing at the interface due to wear during installation.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are 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 perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A novel plate heat exchanger pipe connection structure, comprising a plate heat exchanger body (1), wherein a quick-connect female connector (2) is provided on the front of the plate heat exchanger body (1), and characterized in that: The quick-connect female connector (2) is plugged into the quick-connect male connector (3) and fixed via a clamping compression spring (4); The quick-connect female connector (2) comprises a connecting pipe (21) arranged on the front side of the plate heat exchanger body (1), and a first flange (22) is arranged at the end of the connecting pipe (21).

2. According to the novel plate heat exchanger pipe structure of claim 1, it is characterized by: The quick-connect male connector (3) comprises a plug-in tube (31), a right-angle elbow (32) and a water pipe (33). A second flange (34) is provided at the end of the plug-in tube (31). The plug-in tube (31) is fixedly installed on the outside of the plug-in end of the right-angle elbow (32). The size of the first flange (22) matches the size of the second flange (34). The diameter of the plug-in end of the right-angle elbow (32) matches the inner diameter of the connecting tube (21). The plug-in end of the right-angle elbow (32) is movably plugged into the connecting tube (21). The water pipe (33) is connected to the connecting end of the right-angle elbow (32). The clamping compression spring (4) is clamped and fixed on the first flange (22) and the second flange (34).

3. According to the novel plate heat exchanger pipe structure of claim 2, it is characterized by: The clamping compression spring (4) comprises a compression spring body (41), a plurality of compression grooves (42) are provided on the inner side of the compression spring body (41), and the width of the compression grooves (42) is the same as the sum of the thicknesses of the first flange (22) and the second flange (34).

4. According to the novel plate heat exchanger pipe structure of claim 3, it is characterized in that: Both ends of the compression spring body (41) are provided with easy-to-fasten ends (43).

5. According to the novel plate heat exchanger pipe structure of claim 2, it is characterized in that: A sealing groove is provided at the end of the plug-in end of the right-angle elbow (32), and an O-shaped sealing ring (5) is installed in the sealing groove.

Images