Disassembly-free plate heat exchanger with cleaning function for testboard

Abstract

The invention relates to the technical field of plate heat exchangers, and particularly discloses a disassembly-free plate heat exchanger with a cleaning function for a test board, which comprises a plate heat exchanger body and further comprises a cleaning tank used for containing cleaning fluid; the liquid storage tank is used for receiving waste liquid generated after cleaning is completed; the circulating drainage assembly comprises a first guide pipe and a second guide pipe, the first guide pipe is installed between the cooling water inlet end of the plate heat exchanger body and the cleaning tank, and the second guide pipe is installed between the cooling water outlet end of the plate heat exchanger body and the cleaning tank; a circulating pump is arranged on the side wall of the first guide pipe, a circulating three-way valve is arranged on the side wall of the first guide pipe, and a water injection assembly is arranged between the first guide pipe and the cleaning tank. The device has a disassembly-free automatic cleaning function, is simple in process, does not cause leakage of the heat exchanger and damage of spare and accessory parts, and improves the cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of plate heat exchangers, and particularly relates to a disassembly-free plate heat exchanger for a test bench with a cleaning function. Background Art

[0002] The plate heat exchanger is an important component of a hydrogen fuel test bench and an electrolyzed water test bench, and is an efficient heat exchange device. Its principle is to form channels by stacking plate sheets, and achieve the purpose of heat exchange through heat transfer between fluids. Since the current cold water source has impure water quality and the filter cannot effectively remove impurities, and at the same time the internal flow aperture of the plate heat exchanger is small, over time, dirt will form inside the plate heat exchanger. After scaling, the internal channel cross-section becomes smaller or even blocked, resulting in a reduction in the heat exchange efficiency of the plate heat exchanger, thus affecting the normal progress of the test and the safety of the equipment. The blockage of the plate heat exchanger will affect the water flow during the test, resulting in too high a stack temperature during the test, directly affecting the battery performance. Therefore, the plate heat exchanger should be cleaned regularly to remove dirt to ensure the efficient heat exchange of the plate heat exchanger and the normal progress of the test.

[0003] At present, during the use of the plate heat exchanger, since the plate heat exchanger needs to be cleaned regularly and the plate heat exchanger needs to be disassembled before cleaning, the process is relatively complicated, and it is easy to cause adverse effects such as leakage of the heat exchanger and damage to spare parts. Summary of the Invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a disassembly-free plate heat exchanger for a test bench with a cleaning function, which can solve the problems raised in the above background art.

[0005] The object of the present invention can be achieved by the following technical solutions:

[0006] A disassembly-free plate heat exchanger for a test bench with a cleaning function, including a plate heat exchanger body, the plate heat exchanger body is provided with a cooling water inlet end and a cooling water outlet end, and further includes:

[0007] A cleaning tank for containing a cleaning liquid;

[0008] A liquid storage tank for receiving the waste liquid after cleaning is completed;

[0009] Circulating drainage assembly, the circulating drainage assembly includes a first conduit and a second conduit. The first conduit is installed between the cooling water inlet end of the plate heat exchanger body and the cleaning tank. The second conduit is installed between the cooling water outlet end of the plate heat exchanger body and the cleaning tank. A circulating pump is provided on the side wall of the first conduit. A circulating three-way valve is provided on the side wall of the first conduit. An injection assembly for injecting cooling water is provided between the first conduit and the cleaning tank through the circulating three-way valve. A first circulating water detector is provided on the side wall of the second conduit. The first circulating water detector is used to monitor the concentration of the cleaning liquid in the water flow. A cold water discharge pipe group for discharging cooling water is provided on the side wall of the second conduit. A liquid storage pipe group is provided between the second conduit and the liquid storage tank;

[0010] Ultrasonic device, the ultrasonic device is used to perform ultrasonic vibration on the plate heat exchanger.

[0011] Preferably, the cleaning tank further includes a cleaning liquid injection pipe. The cleaning liquid injection pipe is installed on the side wall of the plate heat exchanger body. A first valve is provided on the side wall of the cleaning liquid injection pipe.

[0012] Preferably, an exhaust valve is provided at the top of the cleaning tank. The exhaust valve is communicated with the cleaning tank.

[0013] Preferably, the liquid storage tank further includes a ventilation port. The ventilation port penetrates and is fixedly installed at the top of the liquid storage tank. A dust-proof cover is provided at the top port of the liquid storage tank.

[0014] Preferably, the liquid storage tank further includes a drain pipe. The drain pipe penetrates and is fixedly installed on the side wall of the liquid storage tank. A second valve is provided on the side wall of the drain pipe.

[0015] Preferably, the injection assembly includes an L-shaped pipe and an injection pipe. A drainage pipe is provided on the side wall of the cleaning tank. A liquid adding three-way valve is provided between the drainage pipe, the L-shaped pipe and the injection pipe. One end of the L-shaped pipe far from the liquid adding three-way valve is connected to the circulating three-way valve.

[0016] Preferably, the cold water discharge pipe group includes a discharge three-way valve. The discharge three-way valve is provided on the side wall of the second conduit. The second conduit is connected to a cold water outlet pipe through the discharge three-way valve.

[0017] Preferably, the liquid storage pipe group includes a discharge pipe. A switching three-way valve is provided on the side wall of the second conduit. The discharge pipe is communicated with the second conduit through the switching three-way valve. A second circulating water detector is provided on the side wall of the discharge pipe. The second circulating water detector is used to monitor the pH value of the wastewater.

[0018] Preferably, the ultrasonic device includes an ultrasonic generator. A plurality of transducers are provided on the outer wall of the plate heat exchanger body. A plurality of the transducers are electrically connected to the ultrasonic generator.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. By providing a cleaning tank and a circulating drainage assembly, the cleaning tank is used to hold the cleaning liquid; the liquid storage tank is used to receive the waste liquid after cleaning. The circulating drainage assembly includes a first conduit and a second conduit. The first conduit is installed between the cooling water inlet end of the plate heat exchanger body and the cleaning tank, and the second conduit is installed between the cooling water outlet end of the plate heat exchanger body and the cleaning tank. A circulating pump is provided on the side wall of the first conduit, and a circulating three-way valve is provided on the side wall of the first conduit. An injection assembly for injecting cooling water is provided between the first conduit and the cleaning tank through the circulating three-way valve. A first circulating water detector is provided on the side wall of the second conduit, which is used to monitor the concentration of the cleaning liquid in the water flow. A cold water discharge pipe group for discharging cooling water is provided on the side wall of the second conduit. A liquid storage pipe group is provided between the second conduit and the liquid storage tank;

[0021] The beneficial effects that can be obtained are: effectively reducing the time and frequency of stopping the machine to disassemble and clean the plate heat exchanger, having a disassembly-free automatic cleaning function, with simple processes, and not causing leakage of the heat exchanger and damage to spare parts.

[0022] 2. By providing a liquid storage pipe group and a liquid storage tank, the liquid storage pipe group includes a discharge pipe. A switching three-way valve is provided on the side wall of the second conduit, and the discharge pipe is connected to the second conduit through the switching three-way valve. A second circulating water detector is provided on the side wall of the discharge pipe, which is used to monitor the pH value of the waste water;

[0023] The beneficial effects that can be obtained are: the waste liquid after cleaning can be detected, effectively controlling that no residual cleaning agent remains in the plate heat exchanger, controlling corrosion of the equipment, and extending the service life.

[0024] 3. By providing an ultrasonic device, the ultrasonic device includes an ultrasonic generator, and a plurality of transducers are provided on the outer wall of the plate heat exchanger body. The plurality of transducers are all electrically connected to the ultrasonic generator;

[0025] The beneficial effects that can be obtained are: extremely strong pressure waves are generated in water by the ultrasonic waves, destroying the water scale and making the water scale easy to remove, further improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is an installation structure diagram of the liquid storage tank in the present invention;

[0029] Figure 3 The installation structure diagram of the water injection component in the present invention;

[0030] Figure 4 The installation structure diagram of the liquid storage pipe group in the present invention.

[0031] Explanation of the reference numerals in the drawings:

[0032] In the figure: 1, the plate heat exchanger body; 2, the cleaning tank; 21, the cleaning liquid injection pipe; 22, the first valve; 23, the exhaust valve; 3, the liquid storage tank; 31, the ventilation port; 32, the dust cover; 33, the drain pipe; 34, the second valve; 4, the first conduit; 41, the circulation pump; 42, the circulation three-way valve; 43, the drain pipe; 44, the L-shaped pipe; 45, the water injection pipe; 46, the liquid addition three-way valve; 5, the second conduit; 51, the first circulating water detector; 52, the discharge three-way valve; 53, the switching three-way valve; 54, the cold water outlet pipe; 61, the discharge pipe; 62, the second circulating water detector; 71, the transducer; 72, the ultrasonic generator. Detailed implementation manners

[0033] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following describes in detail the specific implementation manners, structures, features and their effects of the present invention in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "inside", "outside", etc. is based on the orientation or position shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore should not be construed as a limitation to the present application.

[0035] Refer to Figures 1-4 , a detachable plate heat exchanger for a test bench with a cleaning function disclosed in the present invention, including a plate heat exchanger body 1, the plate heat exchanger body 1 is provided with a cooling water inlet end and a cooling water outlet end, and further includes:

[0036] A cleaning tank 2, the cleaning tank 2 is used for holding a cleaning liquid, the cleaning tank 2 further includes a cleaning liquid injection pipe 21, the cleaning liquid injection pipe 21 is installed on the side wall of the plate heat exchanger body 1, a first valve 22 is provided on the side wall of the cleaning liquid injection pipe 21, an exhaust valve 23 is provided at the top of the cleaning tank 2, and the exhaust valve 23 is communicated with the cleaning tank 2;

[0037] The liquid storage tank 3 is used to receive the waste liquid after the cleaning is completed. The liquid storage tank 3 further includes a ventilation port 31 which penetrates and is fixedly installed at the top end of the liquid storage tank 3. A dust-proof cover 32 is provided at the top port of the liquid storage tank 3. The liquid storage tank 3 further includes a drain pipe 33 which penetrates and is fixedly installed on the side wall of the liquid storage tank 3. A second valve 34 is provided on the side wall of the drain pipe 33;

[0038] The circulating drainage assembly includes a first conduit 4 and a second conduit 5. The first conduit 4 is installed between the cooling water inlet end of the plate heat exchanger body 1 and the cleaning tank 2. The second conduit 5 is installed between the cooling water outlet end of the plate heat exchanger body 1 and the cleaning tank 2. A circulating pump 41 is provided on the side wall of the first conduit 4. A circulating three-way valve 42 is provided on the side wall of the first conduit 4. An injection assembly for injecting cooling water is provided between the first conduit 4 and the cleaning tank 2 through the circulating three-way valve 42. The injection assembly includes an L-shaped pipe 44 and a water injection pipe 45. A drainage pipe 43 is provided on the side wall of the cleaning tank 2. A liquid addition three-way valve 46 is provided among the drainage pipe 43, the L-shaped pipe 44 and the water injection pipe 45. The end of the L-shaped pipe 44 far from the liquid addition three-way valve 46 is connected to the circulating three-way valve 42. A first circulating water detector 51 is provided on the side wall of the second conduit 5 for monitoring the concentration of the cleaning liquid in the water flow. A cold water discharge pipe group for discharging the cooling water is provided on the side wall of the second conduit 5. The cold water discharge pipe group includes a discharge three-way valve 52 which is provided on the side wall of the second conduit 5. The second conduit 5 is connected to a cold water outlet pipe 54 through the discharge three-way valve 52. A liquid storage pipe group is provided between the second conduit 5 and the liquid storage tank 3. The liquid storage pipe group includes a discharge pipe 61. A switching three-way valve 53 is provided on the side wall of the second conduit 5. The discharge pipe 61 is communicated with the second conduit 5 through the switching three-way valve 53. A second circulating water detector 62 is provided on the side wall of the discharge pipe 61 for monitoring the pH value of the waste water;

[0039] The ultrasonic device is used to perform ultrasonic vibration on the plate heat exchanger. The ultrasonic device includes an ultrasonic generator 72. A plurality of transducers 71 are provided on the outer wall of the plate heat exchanger body 1. The plurality of transducers 71 are all electrically connected to the ultrasonic generator 72.

[0040] Working principle and usage process of the present invention: When the heat exchange efficiency of the plate heat exchanger decreases, it is necessary to clean the scale inside the plate heat exchanger. Before starting the circulating cleaning, connect the transducer 71 and the ultrasonic generator 72 before starting the circulating flushing. Then, open the liquid adding three-way valve 46, inject water into the cleaning tank 2 through the water injection pipe 45. After checking that the system circulation is normal, inject an appropriate amount of cleaning agent into the cleaning tank 2 from the cleaning liquid injection pipe 21. The mixed cleaning liquid passes through the circulation pump 41 and starts circulating cleaning through the first conduit 4, the plate heat exchanger body 1, and the second conduit 5. Turn on the switch of the ultrasonic generator 72 and perform ultrasonic cleaning simultaneously. The ultrasonic generator 72 is responsible for converting electrical energy into high-frequency alternating current signals, which are transmitted to the transducer 71 through the cable. The transducer 71 converts the received electrical signals into mechanical vibrations, thereby generating ultrasonic waves.

[0041] The concentration of the cleaning liquid in the circulating water is detected by the first circulating water detector 51. If the concentration decreases, the cleaning agent is replenished in a timely manner to keep the concentration of the cleaning liquid within a safe and effective range at all times. When the concentration of the cleaning liquid no longer changes or the change amount is very small, it indicates that the plate heat exchanger has been cleaned.

[0042] After the circulating cleaning is completed, in cooperation with the switching three-way valve 53, the circulating waste water will be discharged into the liquid storage tank 3 through the discharge pipe 61. Fill the cleaning tank 2 with clean water, use the circulation pump 41 to flush the plate heat exchanger, drain the waste water, and then rinse repeatedly with clean water until the pH value of the water quality detected by the second circulating water detector 62 reaches 7, then the clean water flushing can be ended, and the entire circulating descaling cleaning is completed.

[0043] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A disassembly-free plate heat exchanger for a test bench with a cleaning function, comprising a plate heat exchanger body (1), wherein the plate heat exchanger body (1) is provided with a cooling water inlet end and a cooling water outlet end, and is characterized in that, Further comprising: A cleaning tank (2) for containing a cleaning liquid; A liquid storage tank (3) for receiving the waste liquid after cleaning is completed; A circulating drainage assembly, which includes a first conduit (4) and a second conduit (5). The first conduit (4) is installed between the cooling water inlet end of the plate heat exchanger body (1) and the cleaning tank (2), and the second conduit (5) is installed between the cooling water outlet end of the plate heat exchanger body (1) and the cleaning tank (2). A circulating pump (41) is provided on the side wall of the first conduit (4), and a circulating three-way valve (42) is provided on the side wall of the first conduit (4). An injection assembly for injecting cooling water is provided between the first conduit (4) and the cleaning tank (2) through the circulating three-way valve (42). A first circulating water detector (51) is provided on the side wall of the second conduit (5) for monitoring the concentration of the cleaning liquid in the water flow. A cold water discharge pipe group for discharging cooling water is provided on the side wall of the second conduit (5). A liquid storage pipe group is provided between the second conduit (5) and the liquid storage tank (3); An ultrasonic device for ultrasonically vibrating the plate heat exchanger.

2. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, characterized in that, The cleaning tank (2) further includes a cleaning liquid injection pipe (21) installed on the side wall of the plate heat exchanger body (1), and a first valve (22) is provided on the side wall of the cleaning liquid injection pipe (21).

3. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, characterized in that, An exhaust valve (23) is provided at the top of the cleaning tank (2), and the exhaust valve (23) is in communication with the cleaning tank (2).

4. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, wherein, The liquid storage tank (3) further includes a ventilation port (31) which penetrates and is fixedly installed at the top of the liquid storage tank (3), and a dust-proof cover (32) is provided at the top port of the liquid storage tank (3).

5. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, characterized in that The liquid storage tank (3) further includes a drain pipe (33) which penetrates and is fixedly installed on the side wall of the liquid storage tank (3), and a second valve (34) is provided on the side wall of the drain pipe (33).

6. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, characterized in that, The injection assembly includes an L-shaped pipe (44) and an injection pipe (45). A drain pipe (43) is provided on the side wall of the cleaning tank (2). A liquid adding three-way valve (46) is provided among the drain pipe (43), the L-shaped pipe (44) and the injection pipe (45). One end of the L-shaped pipe (44) away from the liquid adding three-way valve (46) is connected to the circulating three-way valve (42).

7. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, wherein, The cold water discharge pipe group includes a discharge three-way valve (52) provided on the side wall of the second conduit (5), and the second conduit (5) is connected to a cold water outlet pipe (54) through the discharge three-way valve (52).

8. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, characterized in that, The liquid storage pipe group includes a discharge pipe (61). A switching three-way valve (53) is provided on the side wall of the second conduit (5). The discharge pipe (61) is communicated with the second conduit (5) through the switching three-way valve (53), and a second circulating water detector (62) is provided on the side wall of the discharge pipe (61) for monitoring the pH value of the waste water.

9. The detachable plate heat exchanger for a test bench with a cleaning function according to claim 1, characterized in that, The ultrasonic device includes an ultrasonic generator (72), and a plurality of transducers (71) are arranged on the outer wall of the plate heat exchanger body (1), and the plurality of transducers (71) are all electrically connected to the ultrasonic generator (72).

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