Air tightness detection device for plate heat exchanger

Abstract

The utility model is suitable for the technical field of plate heat exchanger production, and provides a plate heat exchanger air tightness detection device which comprises a base. The detection box is assembled on the base and used for containing clear water to detect the air tightness of the plate heat exchanger; the mounting frame is fixed on the base, and a liftable assembly plate is arranged on the mounting frame; the liquid injection pipe is arranged on the assembly plate and is used for injecting detection liquid into the plate heat exchanger; the liquid pumping pipe is fixed on the assembly plate; and the liquid supply mechanism is arranged on the base and the mounting frame and is used for supplying detection liquid to the liquid injection pipe. According to the air tightness detection device for the plate heat exchanger, through cooperation of the detection box, the assembly plate, the liquid supply mechanism, the liquid pumping mechanism and the like, high-pressure detection is replaced by liquid injection detection, the leakage condition is observed through a clear water environment, and the safety risk can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of plate heat exchanger manufacturing technology, and in particular relates to a plate heat exchanger airtightness testing device. Background Technology

[0002] Plate heat exchangers are widely used in chemical, food and other fields due to their high heat transfer efficiency, compact structure and easy disassembly and cleaning. Their airtightness directly affects the operating efficiency and safety of the equipment. Leakage not only reduces heat exchange efficiency, but may also cause media mixing, pollution or even safety accidents. Therefore, airtightness testing is indispensable.

[0003] Currently, the airtightness test of plate heat exchangers mainly involves sealing the entire plate heat exchanger, filling it with compressed air or nitrogen at a certain pressure, maintaining it for a certain period of time, and observing whether the pressure gauge reading drops to determine whether there is a leak. This method is relatively simple to operate, but the detection accuracy is low, and it is difficult to accurately detect tiny leaks. In addition, the detection process requires high pressure, which poses certain safety risks. Utility Model Content

[0004] This utility model provides a plate heat exchanger airtightness testing device, which aims to solve the problem that the current airtightness testing and high-pressure testing of plate heat exchangers are relatively dangerous.

[0005] This utility model is implemented as follows: a plate heat exchanger airtightness testing device includes: a base; a testing box mounted on the base for holding clean water to test the airtightness of the plate heat exchanger; a mounting frame fixed on the base, the mounting frame having a liftable mounting plate; an injection pipe mounted on the mounting plate for injecting testing liquid into the plate heat exchanger; a suction pipe fixed on the mounting plate; a liquid supply mechanism mounted on the base and the mounting frame for supplying testing liquid to the injection pipe; and a suction mechanism mounted on the mounting frame for removing the testing liquid injected into the plate heat exchanger.

[0006] Preferably, the liquid supply mechanism includes: a storage tank fixed on the base for holding the test liquid; a first water pump mounted on the mounting frame, the outlet end of the first water pump being fixedly connected to the inlet end of the injection pipe; and a connecting pipe fixed on the inlet end of the first water pump, the inlet end of the connecting pipe being connected to the storage tank.

[0007] Preferably, the liquid extraction mechanism includes: a second water pump fixed on the mounting frame, the inlet end of the second water pump being fixedly connected to the liquid extraction pipe; a conduit fixed on the outlet end of the second water pump, the outlet end of the conduit being connected to a filter box; a detachable filter box disposed inside the filter box; and a return pipe fixedly connected to the bottom of the filter box, the outlet end of the return pipe extending into the liquid storage tank.

[0008] Preferably, an electric telescopic rod is fixed on the mounting frame, and the output rod of the electric telescopic rod is fixedly connected to the assembly plate through a connecting frame.

[0009] Preferably, a drain pipe and a drain tube are fixedly installed on the detection box and the liquid storage tank, respectively, and a valve is provided on both the drain pipe and the drain tube.

[0010] Preferably, the top of the liquid storage tank is provided with a liquid replenishment port, and a cover plate is provided inside the liquid replenishment port.

[0011] Preferably, the bottom of the base is symmetrically fixed with support columns, the test box is provided with a mesh plate for supporting the plate heat exchanger, and the test box is provided with an observation window.

[0012] Compared with related technologies, the plate heat exchanger airtightness testing device provided by this utility model has the following advantages:

[0013] By coordinating the detection box, assembly plate, liquid supply mechanism, and liquid extraction mechanism, liquid injection detection replaces high-pressure detection, and the use of a clean water environment to observe leaks can reduce safety risks; the electric telescopic rod precisely adjusts the height of the assembly plate, improving connection efficiency; the liquid supply mechanism ensures a stable supply of detection liquid, and the liquid extraction mechanism, in conjunction with the filter box, enables the recycling of detection liquid, reducing costs. Attached Figure Description

[0014] Figure 1 A front view structural schematic diagram of a plate heat exchanger airtightness testing device provided by this utility model;

[0015] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0016] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0017] Figure 4 This is a schematic diagram of the structure of the mesh plate in this utility model.

[0018] Reference numerals: 1. Base; 2. Testing box; 3. Mounting bracket; 4. Assembly plate; 5. Injection pipe; 6. Extraction pipe; 7. Storage tank; 8. First water pump; 9. Connecting pipe; 10. Second water pump; 11. Guide tube; 12. Filter box; 13. Filter cartridge; 14. Return pipe; 15. Electric telescopic rod; 16. Drain pipe; 17. Mesh plate. Detailed Implementation

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] This utility model embodiment provides a plate heat exchanger airtightness testing device, such as... Figure 1-4 As shown, the plate heat exchanger airtightness testing device includes: a base 1; a testing box 2 mounted on the base 1 for holding clean water to test the airtightness of the plate heat exchanger; a mounting frame 3 fixed on the base 1, on which a liftable mounting plate 4 is provided; an injection pipe 5 provided on the mounting plate 4 for injecting testing liquid into the plate heat exchanger; a suction pipe 6 fixed on the mounting plate 4; a liquid supply mechanism provided on the base 1 and the mounting frame 3 for supplying testing liquid to the injection pipe 5; and a suction mechanism provided on the mounting frame 3 for removing the testing liquid injected into the plate heat exchanger.

[0021] In this embodiment, the plate heat exchanger to be tested is placed in the testing chamber 2, which is filled with clean water for testing. The mounting plate 4 is adjusted to a suitable height using the lifting mechanism on the mounting bracket 3, so that the injection pipe 5 and the extraction pipe 6 are connected to the corresponding pipes of the plate heat exchanger. The liquid supply mechanism supplies the testing liquid to the injection pipe 5, allowing the testing liquid to be injected into the plate heat exchanger pipes. Subsequently, the extraction mechanism extracts the testing liquid through the extraction pipe 6, allowing it to circulate within the pipes. During the testing process, the color change of the clean water in the testing chamber 2 is observed to determine the airtightness of the plate heat exchanger.

[0022] From a safety perspective, this device avoids traditional high-pressure testing methods. By injecting a testing fluid into the plate heat exchanger and conducting the test in a clean water environment, it reduces the safety risks associated with high pressure, resulting in higher safety. Regarding testing efficiency, the various components of the device work collaboratively, with a clear operating procedure, enabling rapid testing. Compared to traditional methods, it can more efficiently determine the airtightness of plate heat exchangers. Furthermore, the device's rational structural design eliminates the need for complex and expensive high-pressure testing equipment, reducing testing costs. It also improves the ability to detect minute leaks, enhancing the reliability of the test results.

[0023] In a further preferred embodiment of the present invention, the liquid supply mechanism includes: a liquid storage tank 7 fixed on the base 1 for holding the test liquid; a first water pump 8 mounted on the mounting bracket 3, the outlet end of the first water pump 8 being fixedly connected to the inlet end of the injection pipe 5; and a connecting pipe 9 fixed on the inlet end of the first water pump 8, the inlet end of the connecting pipe 9 being connected to the liquid storage tank 7.

[0024] In this embodiment, the test liquid is pre-placed in a storage tank 7 fixed to the base 1. A first water pump 8 mounted on the mounting bracket 3 is connected to the storage tank 7 via a connecting pipe 9 to form a liquid supply channel. After the first water pump 8 is turned on, it draws the test liquid from the storage tank 7 through the connecting pipe 9 and then delivers the test liquid to the inlet end of the injection pipe 5 through the outlet end, so that the test liquid can be smoothly injected into the plate heat exchanger pipeline, providing the required test liquid for subsequent airtightness testing.

[0025] The liquid storage tank 7, the first water pump 8, the connecting pipe 9, and the injection pipe 5 constitute a complete liquid supply system, which can ensure a continuous and stable supply of test liquid, guarantee the continuity of liquid injection during the test process, and avoid affecting the test process due to interruption of liquid supply.

[0026] In a further preferred embodiment of the present invention, the liquid extraction mechanism includes: a second water pump 10 fixed on the mounting frame 3, the inlet end of the second water pump 10 being fixedly connected to the liquid extraction pipe 6; a conduit 11 fixed on the outlet end of the second water pump 10, the outlet end of the conduit 11 being connected to a filter box 12; a detachable filter box 13 disposed in the filter box 12; and a return pipe 14 fixedly connected to the bottom of the filter box 12, the outlet end of the return pipe 14 extending into the liquid storage tank 7.

[0027] In this embodiment, after the plate heat exchanger completes the injection of the test liquid, the second water pump 10, fixed on the mounting bracket 3, is started. The second water pump 10 draws out the test liquid from the plate heat exchanger pipes through the liquid extraction pipe 6 connected to the liquid inlet end. The test liquid flows into the conduit 11 through the liquid outlet end of the second water pump 10, and then is transported to the filter box 12 through the conduit 11. In the filter box 12, the test liquid is filtered through the detachable filter box 13 to remove impurities. The filtered test liquid flows out from the return pipe 14 at the bottom of the filter box 12 and finally flows back to the storage tank 7, realizing the recycling of the test liquid.

[0028] From the perspective of resource utilization, the liquid extraction mechanism, through the cooperation of the second water pump 10, conduit 11, filter box 12, filter cartridge 13 and return pipe 14, realizes the recycling of the detection liquid, reduces the consumption of detection liquid and lowers the detection cost.

[0029] In a further preferred embodiment of this utility model, an electric telescopic rod 15 is fixed on the mounting frame 3, and the output rod of the electric telescopic rod 15 is fixedly connected to the assembly plate 4 through a connecting frame.

[0030] In this embodiment, the electric telescopic rod 15 is activated, and the output rod extends and retracts, driving the connecting frame to raise and lower the assembly plate 4. The height of the assembly plate 4 is flexibly adjusted so that the injection pipe 5 and extraction pipe 6 on the assembly plate 4 are accurately connected to the pipes of the plate heat exchanger, preparing for the subsequent injection and extraction of the test liquid.

[0031] In a further preferred embodiment of the present invention, a drain pipe 16 and a drain tube are fixedly installed on the detection box 2 and the liquid storage tank 7, respectively, and a valve is provided on both the drain pipe 16 and the drain tube.

[0032] In this embodiment, after the airtightness test of the plate heat exchanger is completed, if it is necessary to replace the clean water in the test tank 2 or clean the test liquid in the storage tank 7, the drain pipe 16 on the test tank 2 and the drain pipe valve on the storage tank 7 can be opened respectively. At this time, the clean water in the test tank 2 will be discharged through the drain pipe 16, and the test liquid in the storage tank 7 will flow out through the drain pipe. After the liquid is completely discharged, the valve can be closed, and subsequent liquid replenishment or equipment cleaning work can be carried out.

[0033] In a further preferred embodiment of the present invention, the top of the liquid storage tank 7 is provided with a liquid replenishment port, and a cover plate is provided inside the liquid replenishment port.

[0034] In this embodiment, when the detection liquid in the storage tank 7 is insufficient, the cover plate inside the replenishment port can be opened to add detection liquid to the storage tank 7 through the replenishment port. After adding liquid, the cover plate is put back on the replenishment port to ensure that the replenishment port is sealed and to prevent external impurities from entering the storage tank 7.

[0035] In a further preferred embodiment of this utility model, the bottom of the base 1 is symmetrically fixed with support columns, the test box 2 is provided with a mesh plate 17 for supporting the plate heat exchanger, and the test box 2 is provided with an observation window.

[0036] In this embodiment, the mesh plate 17 can stably support the heat exchanger. During the testing process, clean water is injected into the testing chamber 2, and the operator observes the condition of the plate heat exchanger in the water in real time through the observation window set on the testing chamber 2 to determine whether there is any leakage of the colored detection liquid.

[0037] In summary, compared with related technologies, by coordinating the detection box 2, assembly plate 4, liquid supply mechanism and liquid extraction mechanism, liquid injection detection is used instead of high pressure detection, and leakage is observed in a clean water environment, which can reduce safety risks; the electric telescopic rod 15 can precisely adjust the height of the assembly plate 4, improving connection efficiency; the liquid supply mechanism ensures a stable supply of detection liquid, and the liquid extraction mechanism, together with the filter box 12, enables the recycling of detection liquid, reducing costs.

[0038] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0039] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A plate heat exchanger air tightness testing device, characterized in that, The utility model relates to a kind of water leakage detection device for plate heat exchanger, including: Base; Detection box is assembled on the base, for containing the air tightness of clean water detection plate heat exchanger; Mounting bracket is fixed on the base, the mounting bracket is provided with the assembly plate of being liftable on it; Liquid injection pipe is set on the assembly plate for injecting detection liquid into plate heat exchanger; Liquid suction pipe is fixed on the assembly plate; Liquid supply mechanism is set on the base and the mounting bracket, for supplying detection liquid to the liquid injection pipe; Liquid suction mechanism is set on the mounting bracket, for extracting detection liquid injected into plate heat exchanger.

2. The plate heat exchanger gas tightness testing device of claim 1, wherein, The liquid supply mechanism includes: Liquid storage tank is fixed on the base for containing detection liquid; First water pump is assembled on the mounting bracket, and the liquid outlet end of the first water pump is fixedly connected with the liquid inlet end of the liquid injection pipe; Connecting pipe is fixed on the water inlet end of the first water pump, and the liquid inlet end of the connecting pipe is communicated with the liquid storage tank.

3. The plate heat exchanger gas tightness testing device of claim 2, wherein, The liquid suction mechanism includes: Second water pump is fixed on the mounting bracket, and the liquid inlet end of the second water pump is fixedly connected with the liquid suction pipe; Conduit is fixed on the liquid outlet end of the second water pump, and the liquid outlet end of the conduit is communicated with filter tank; Filter box is arranged in the filter tank and can be detached; Backflow pipe is fixedly communicated at the bottom of the filter tank, and the liquid outlet end of the backflow pipe extends into the liquid storage tank.

4. The plate heat exchanger gas tightness testing device of claim 2, wherein, Electric telescopic rod is fixed on the mounting bracket, and the output rod of the electric telescopic rod is fixedly connected with the assembly plate through connecting frame.

5. The plate heat exchanger gas tightness testing device of claim 2, wherein, Drain pipe and liquid discharge pipe are respectively fixed and installed on the detection tank and the liquid storage tank, and valves are arranged on the drain pipe and the liquid discharge pipe.

6. The plate heat exchanger gas tightness testing device of claim 2, wherein, Liquid supplementing port is formed on the top of the liquid storage tank, and cover plate is arranged in the liquid supplementing port.

7. The plate heat exchanger gas tightness testing device of claim 1, wherein, Supporting column is symmetrically fixed on the bottom of the base, mesh plate for carrying plate heat exchanger is arranged in the detection tank, and observation window is arranged on the detection tank.

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