CN213874865U - Heat exchanger gas tightness testing device - Google Patents
Heat exchanger gas tightness testing device Download PDFInfo
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- CN213874865U CN213874865U CN202022807931.6U CN202022807931U CN213874865U CN 213874865 U CN213874865 U CN 213874865U CN 202022807931 U CN202022807931 U CN 202022807931U CN 213874865 U CN213874865 U CN 213874865U
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 230000003584 silencer Effects 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 28
- 239000007789 gas Substances 0.000 abstract description 19
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 14
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 210000000056 organ Anatomy 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a heat exchanger gas tightness testing arrangement includes a box to outside high pressurized air source and heat exchanger setting, is provided with two sets of at least test assembly on the box, each group the test assembly all includes high pressurized air source air inlet, hand valve, relief pressure valve, first solenoid valve and device air inlet, the high pressurized air source air inlet passes through the tube coupling with outside high pressurized air source, and each is organized by switching tube coupling between reserve air inlet in the test assembly and the reserve air inlet of at least a set of test assembly in addition, the last switching solenoid valve that is provided with of switching tube. The utility model discloses a set to supporting multiunit test assembly and corresponding control assembly and constitute an automatic system on the box, accomplish the automatic control to the test of heat exchanger gas tightness, realized the unmanned operation when filling nitrogen, pressurize and pressure release, avoid operating personnel to need to keep constantly on the station during this period, reduce workman intensity of labour, reduce the operation risk.
Description
Technical Field
The utility model relates to an air tightness test technical field of heat exchanger, in particular to can realize automatic control's heat exchanger gas tightness testing arrangement.
Background
The heat exchanger is an energy-saving device for transferring heat between materials between two or more fluids with different temperatures, is also called as a heat exchanger, and is used for transferring heat from the fluid with higher temperature to the fluid with lower temperature to enable the temperature of the fluid to reach the index specified by the process so as to meet the requirements of process conditions and simultaneously is one of main devices for improving the energy utilization rate.
Before the heat exchanger is produced and delivered from a factory, the air tightness test of the heat exchanger needs to be carried out so as to ensure that the air tightness of the heat exchanger meets the factory requirement and relevant standards. In the prior art, most of the air tightness tests of the heat exchanger adopt a mode of flushing nitrogen into the heat exchanger and then testing the heat exchanger through water detection or observing the change of a pressure gauge, and the following manual control mode can be adopted to test the air tightness of the heat exchanger in the prior art: 1. when nitrogen is filled for leakage detection, an operator manually opens the valve to start nitrogen filling, and when the pressure reaches a specified value, the valve is manually closed; 2. and (3) starting timing after the pressure reaches, observing that no leakage exists after the time reaches a specified time (such as 10 min), and manually opening a valve to release the pressure. The inventor finds that the prior art has at least the following defects when realizing the utility model: in the nitrogen charging process, an operator cannot leave a work post, people must work cooperatively on the spot, and the lack of attention of the personnel can cause over-high charging pressure, thereby damaging instruments and equipment and threatening personal safety to the operator; because an operator is required to observe whether leakage exists or not, the operator is required to manually open the valve to release the pressure after the test is finished, and therefore the operator is required to have rich operation experience and good risk awareness; the testing method has low efficiency and cannot meet the actual production efficiency requirement of enterprises; for heat exchangers with different signal specifications, different air sources may need to be replaced to test, a plurality of joints need to be replaced after one-time pressure maintaining and air leakage, and the operation is complex.
In view of this, how to solve prior art to have the safety risk to the operating personnel who exists, efficiency of software testing is low, intensity of labour is big, complex operation, rely on high grade problem to operating personnel's occupational skill literacy, just become the subject that the utility model discloses the research was solved.
Disclosure of Invention
The utility model provides a heat exchanger gas tightness testing arrangement, its purpose be used for solving prior art to have safe risk, low, the intensity of labour is big, complex operation, rely on the scheduling problem to operating personnel's occupational skill literacy to the operating personnel who exists, realize safe, high-efficient, automatic gas tightness test operation.
In order to achieve the above object, the utility model adopts a technical scheme that: a heat exchanger air tightness testing device comprises a box body which is arranged aiming at an external high-pressure air source and a heat exchanger, wherein at least two groups of testing components are arranged on the box body;
each group of test assemblies comprises a high-pressure air source air inlet, a hand valve, a pressure reducing valve, a first electromagnetic valve and a device air inlet, the high-pressure air source air inlet is connected with an external high-pressure air source through a pipeline, a standby air inlet is arranged on the pipeline between the high-pressure air source air inlet and the external high-pressure air source, the standby air inlet in each group of test assemblies is connected with the standby air inlets of at least one other group of test assemblies through a switching pipeline, and the switching pipeline is provided with a switching electromagnetic valve; the high-pressure air source air inlet, the hand valve and the pressure reducing valve are connected in series through pipelines; one end of the first electromagnetic valve is connected with the pressure reducing valve through a pipeline, the other end of the first electromagnetic valve outputs one exhaust branch and at least two air inlet branches in parallel through a main pipeline, and a pressure sensor is arranged on the main pipeline; wherein,
the exhaust branch is provided with a second electromagnetic valve, and a silencer and an exhaust port are connected along the tail end of the exhaust branch;
an air inlet electromagnetic valve is arranged on the air inlet branch, an air inlet of the device is arranged at the tail end of the air inlet branch, an air inlet joint is arranged at the air inlet of the device, and the air inlet of the device is connected with the heat exchanger through the air inlet joint.
The related content of the utility model is explained as follows:
1. the utility model discloses in, constitute an automatic system through set to supporting multiunit test component and corresponding control assembly on the box, accomplish the automatic control to the test of heat exchanger gas tightness, high pressurized air source air inlet and outside high pressurized air source tube coupling, carry the heat exchanger via the second solenoid valve after reducing pressure valve with highly compressed air source decompression to certain atmospheric pressure again after through the relief pressure valve, when the different high pressurized air source of needs switching, can accomplish the switching through switching the solenoid valve and with the different closed first solenoid valve between organizing. In the nitrogen charging process, the system automatically opens the first electromagnetic valve and the air inlet electromagnetic valve, the second electromagnetic valve is kept closed, the air source in the external high-pressure air source charges nitrogen for the heat exchanger, and when the numerical value display pressure in the pressure sensor reaches a set value, the first electromagnetic valve is closed; if the heat exchanger leaks in the pressure maintaining state, the pressure value of the pressure sensor is reduced to a set value, and then an operator is reminded to perform corresponding operation; and after the pressure maintaining is finished, the system enters an automatic pressure relief state, the second electromagnetic valve is opened to relieve the pressure, and after the pressure value of the system is reduced to a safety value, the connection between the heat exchanger and the air inlet connector is removed after the working personnel confirm that all the pressure values are normal.
2. The utility model discloses in, for let testing arrangement have redundant space, can test the heat exchanger of different model specifications and different experimental requirements be provided with a reserve air inlet on the pipeline between high pressurized air source air inlet and the outside high pressurized air source, adopt 7/16UNF to connect in this reserve air inlet department, use the device messenger to connect outside other air supplies through reserve air inlet.
3. The utility model discloses in, be provided with two sets of test components in a box, the quantity of branch road of admitting air is two the tunnel, is first branch road and the second branch road of admitting air respectively, and the solenoid valve that admits air that sets up on first branch road of admitting air is the third solenoid valve, and the solenoid valve that admits air that sets up on the second branch road of admitting air is the fourth solenoid valve, and a gas tightness test equipment can carry out simultaneous detection to four heat exchangers, increases work efficiency.
4. The utility model discloses in be provided with the relief valve on the pipeline between relief pressure valve and the first solenoid valve, when the pressure between relief pressure valve and the first solenoid valve is too big, let out unnecessary gas by the relief valve, guarantee the security of system.
5. The utility model discloses in, the end of exhaust branch road in the outside towards the box with silencer and gas vent are connected, set up silencer and gas vent in the box outside, make box spatial layout more reasonable.
6. In the present invention, the air inlet joint is an 7/16UNF joint.
7. The utility model discloses in, be provided with control assembly, control panel, bee calling organ and signal lamp in the box, control circuit has among the control assembly, control assembly and each solenoid valve, pressure sensor and control panel, bee calling organ and signal lamp electric connection.
8. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, coupled between two elements, or coupled in any other manner that does not materially affect the operation of the device, unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
9. In the present invention, the terms "center", "upper", "lower", "axial", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional assembly relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
10. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Because of the application of above-mentioned scheme, compared with the prior art, the utility model have following advantage and effect:
1. the technical scheme of the utility model forms an automatic system by setting multiple sets of matched test components and corresponding control components on the box body, so as to complete the automatic control of the air tightness test of the heat exchanger, realize the unmanned operation during the nitrogen filling, pressure maintaining and pressure relief, avoid the need of the operator to keep on the station all the time during the period, reduce the labor intensity of workers and reduce the operation risk;
2. the above technical scheme of the utility model, through with each subassembly integration to a box in, optimized the structure of device itself, make the preparation of device, use more convenient, the cost is also not high, can more extensively get to go in the heat exchanger gas tightness test of mill, for the batch purchase of enterprise, use and bring the facility.
3. The above technical scheme of the utility model manual mode and automatic mode can have, can let operating personnel get to use the device when carrying out the gas tightness test of heat exchanger, and is more nimble changeable
4. When the heat exchangers of different models are subjected to air tightness testing, different high-pressure air sources are required to be used, the same heat exchanger can also be tested by using different high-pressure air sources, when different high-pressure air sources are required to be switched, the switching can be completed by switching the electromagnetic valves and closing the first electromagnetic valves between different groups, the joints are not required to be frequently replaced, the time is saved, operators are not required to have abundant occupational skills, and the heat exchanger can be operated by general technicians.
Drawings
Fig. 1 is the utility model discloses embodiment heat exchanger gas tightness testing arrangement's schematic diagram.
The drawings are shown in the following parts:
1. a box body;
2. testing the component; 21. a high-pressure gas source inlet; 22. a hand valve; 23. a pressure reducing valve; 24. a first solenoid valve; 25. a main pipeline; 251. a pressure sensor; 26. an exhaust branch; 261. a muffler; 262. an exhaust port; 27. an air inlet branch; 271. a first air intake branch; 272. a second air intake branch; 28. a second solenoid valve; 29. an air inlet solenoid valve; 291. a third electromagnetic valve; 292. a fourth solenoid valve;
3. a standby air inlet; 31. switching pipelines; 32. switching the electromagnetic valves;
4. a safety valve;
5. a control component;
6. a control panel;
7. a buzzer;
8. a signal lamp;
91. a high pressure gas source; 92. a heat exchanger.
Detailed Description
The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
As shown in the attached drawing 1, the embodiment of the utility model discloses a heat exchanger 92 air tightness testing device, the heat exchanger 92 air tightness testing device comprises a box body 1 which is arranged aiming at an external high-pressure air source 91 and a heat exchanger 92, and at least two groups of testing components 2 are arranged on the box body 1; each group of test assemblies 2 comprises a high-pressure air source air inlet 21, a hand valve 22, a pressure reducing valve 23, a first electromagnetic valve 24 and a device air inlet, wherein the high-pressure air source air inlet 21 is connected with an external high-pressure air source 91 through a pipeline, a standby air inlet 3 is arranged on the pipeline between the high-pressure air source air inlet 21 and the external high-pressure air source 91, the standby air inlet 3 in each group of test assemblies 2 is connected with the standby air inlets 3 of at least one other group of test assemblies 2 through a switching pipeline 31, and the switching pipeline 31 is provided with a switching electromagnetic valve 32; the high-pressure air source air inlet 21, the hand valve 22 and the pressure reducing valve 23 are connected in series through pipelines; one end of the first electromagnetic valve 24 is connected with the pressure reducing valve 23 through a pipeline, the other end of the first electromagnetic valve parallelly outputs one exhaust branch 26 and at least two intake branches 27 through a main pipeline 25, and a pressure sensor 251 is arranged on the main pipeline 25; wherein, the exhaust branch 26 is provided with a second electromagnetic valve 28, and a muffler 261 and an exhaust port 262 are connected along the tail end of the exhaust branch 26; an air inlet electromagnetic valve 29 is arranged on the air inlet branch 27, an air inlet of a device is arranged at the tail end of the air inlet branch 27, an air inlet joint is arranged at the air inlet of the device, and the air inlet of the device is connected with the heat exchanger 92 through the air inlet joint.
Through the implementation of the technical scheme, a plurality of groups of matched testing assemblies 2 and corresponding control assemblies 5 are arranged on the box body 1 to form an automatic system, so that the automatic control of the air tightness test of the heat exchanger 92 is completed, the high-pressure air source inlet 21 is in pipeline connection with the external high-pressure air source 91, the high-pressure air source is decompressed to a certain air pressure through the decompression valve 23 and then is conveyed to the heat exchanger 92 through the second electromagnetic valve 28, and when different high-pressure air sources 91 are required to be switched, the switching can be completed by switching the electromagnetic valve 32 and closing the first electromagnetic valves 24 among different groups. In the process of charging nitrogen, the system automatically opens the first electromagnetic valve 24 and the air inlet electromagnetic valve 29, the second electromagnetic valve 28 is kept closed, the gas source in the external high-pressure gas source 91 charges nitrogen to the heat exchanger 92, and when the numerical value in the pressure sensor 251 shows that the pressure reaches a set value, the first electromagnetic valve 24 is closed; if the heat exchanger 92 leaks in the pressure maintaining state, the pressure value of the pressure sensor 251 is reduced to a set value, and then an operator is reminded to perform corresponding operation; and after the pressure maintaining is finished, the system enters an automatic pressure relief state, the second electromagnetic valve 28 is opened to relieve the pressure, and after the pressure value of the system is reduced to a safety value, the connection between the heat exchanger 92 and the air inlet connector is removed after the working personnel confirm that all the pressure values are normal.
In a preferred embodiment, two groups of test assemblies 2 are arranged in one box body 1, the two groups of test assemblies 2 can respectively correspond to two groups of external high-pressure air sources 91 and heat exchangers 92, the two groups of external high-pressure air sources 91 can respectively contain 1.4MPa nitrogen sources and 3.3MPa nitrogen sources, the two groups of heat exchangers 92 can be simultaneously subjected to air tightness test, and meanwhile, the two groups of heat exchangers 92 can be switched under the conditions that the positions are not changed and various joints are not disassembled; the box body 1 is provided with a control component 5, a control panel 6, a buzzer 7 and a signal lamp 8, the control component 5 is electrically connected with each electromagnetic valve, the pressure sensor 251, the control panel 6, the buzzer 7 and the signal lamp 8, and the control component 5 is used for automatically controlling the two groups of test components 2. A safety valve 4 is arranged on a pipeline between the pressure reducing valve 23 and the first electromagnetic valve 24, and when the pressure between the pressure reducing valve 23 and the first electromagnetic valve 24 is overlarge, redundant gas is discharged by the safety valve 4, so that the safety of the system is ensured; the end of the exhaust branch 26 is connected to the muffler 261 and the exhaust port 262 toward the outside of the case 1, and the muffler 261 and the exhaust port 262 are disposed outside the case 1.
The utility model discloses automatic control flow is as follows:
1. and (3) nitrogen filling and pressure maintaining: the start button is clicked, the first solenoid valve 24 is opened, the third solenoid valve 291 or the fourth solenoid valve 292 is opened, the heat exchanger starts to be filled with nitrogen, and when the pressure reaches a set value, the first solenoid valve 24 is closed.
2. And (4) entering a pressure maintaining state, starting timing by a timer, and sounding a buzzer 7 when the time reaches a set time (such as 10 min) to remind an operator of finishing the pressure maintaining time. If the pressure of the heat exchanger leaks in the automatic pressure maintaining process, the pressure reaches the lower limit of a set value (such as 32.8 bar), the buzzer 7 sounds to remind an operator to check the heat exchanger, and meanwhile, the first electromagnetic valve 24 is opened to pressurize to the set pressure.
3. After the pressure maintaining time is up, the PLC control delays for 15 seconds, and then the second electromagnetic valve 28 is opened to automatically release pressure.
And simultaneously, through the utility model discloses implement, the whole workflow of PLC control divide into manual mode and automatic mode.
In the automatic mode, the workflow is as follows:
a. the system automatically opens the first electromagnetic valve 24 for air intake, and opens the third electromagnetic valve 291 or the fourth electromagnetic valve 292; the system starts to pressurize, when the pressure reaches a pressure maintaining set value, the first electromagnetic valve 24 for air inlet is automatically closed, and the system enters a pressure maintaining state and starts to time;
b. in the pressure maintaining process, if the air pressure is reduced to a set lower limit value, a signal is sent (the buzzer 7 sounds), an operator is reminded to check whether a leakage point exists, and meanwhile, the system automatically opens the air inlet first electromagnetic valve 24 to pressurize until the pressure is restored to a pressure maintaining set value;
c. when the pressure maintaining time reaches the detection requirement, the system sends a signal to the signal lamp 8 to remind an operator of completing the pressure maintaining;
d. after the pressurize was accomplished, the system got into automatic pressure release state, and pressure release second solenoid valve 28 is opened, when system's pressure dropped to 2 bar 1bar, closed pressure release second solenoid valve 28, and bee calling organ 7 sounds simultaneously, tells operating personnel that the pressure release is accomplished, treats all normal backs of staff's affirmation, demolishs the frock.
In the manual mode, the solenoid valves are controlled by the operator via the control panel 6.
It should be noted that, connection relations between the electrical devices such as the electromagnetic valves, the control module 5, the control panel 6, the buzzer 7, and the signal lamp 8 and the power supply, PLC control modes, etc. all belong to the prior art, and are not the point of the present invention, and therefore, they are not specifically described herein. The embodiment of the utility model provides a when actually implementing, the model that each components and parts can adopt is as follows: a pressure reducing valve: 452IN-450\452 IN-750; electromagnetic valve: burert 00140566; a pressure sensor: MPM series; a muffler: YASHIBA-DN 80; a safety valve: CSA-22C300T DN 15.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. The utility model provides a heat exchanger gas tightness testing arrangement which characterized in that: the device comprises a box body (1) which is arranged aiming at an external high-pressure air source (91) and a heat exchanger (92), wherein at least two groups of test components (2) are arranged on the box body (1);
each group of test assemblies (2) comprises a high-pressure air source air inlet (21), a hand valve (22), a pressure reducing valve (23), a first electromagnetic valve (24) and a device air inlet, the high-pressure air source air inlet (21) is connected with an external high-pressure air source (91) through a pipeline, a standby air inlet (3) is arranged on a pipeline between the high-pressure air source air inlet (21) and the external high-pressure air source (91), the standby air inlet (3) in each group of test assemblies (2) is connected with the standby air inlets (3) of at least one other group of test assemblies (2) through a switching pipeline (31), and a switching electromagnetic valve (32) is arranged on the switching pipeline (31); the high-pressure air source air inlet (21), the hand valve (22) and the pressure reducing valve (23) are connected in series through pipelines; one end of the first electromagnetic valve (24) is connected with the pressure reducing valve (23) through a pipeline, the other end of the first electromagnetic valve outputs a gas exhaust branch (26) and at least two gas inlet branches (27) in parallel through a main pipeline (25), and a pressure sensor (251) is arranged on the main pipeline (25); wherein,
a second electromagnetic valve (28) is arranged on the exhaust branch (26), and a silencer (261) and an exhaust port (262) are connected along the tail end of the exhaust branch (26);
an air inlet electromagnetic valve (29) is arranged on the air inlet branch (27), an air inlet of the device is arranged at the tail end of the air inlet branch (27), an air inlet joint is arranged at the air inlet of the device, and the air inlet of the device is connected with the heat exchanger (92) through the air inlet joint.
2. The heat exchanger airtightness testing apparatus according to claim 1, wherein: two groups of test assemblies (2) are arranged in one box body (1), the number of the air inlet branches (27) is two, namely a first air inlet branch (271) and a second air inlet branch (272), the air inlet electromagnetic valve (29) arranged on the first air inlet branch (271) is a third electromagnetic valve (291), and the air inlet electromagnetic valve (29) arranged on the second air inlet branch (272) is a fourth electromagnetic valve (292).
3. The heat exchanger airtightness testing apparatus according to claim 1, wherein: a safety valve (4) is arranged on a pipeline between the pressure reducing valve (23) and the first electromagnetic valve (24).
4. The heat exchanger airtightness testing apparatus according to claim 1, wherein: the end of the exhaust branch (26) is connected with the muffler (261) and the exhaust port (262) on the outer side facing the box body (1).
5. The heat exchanger airtightness testing apparatus according to claim 1, wherein: an 7/16UNF joint is adopted at the spare air inlet (3), and a 7/16UNF joint is adopted as the air inlet joint.
6. The heat exchanger airtightness testing apparatus according to claim 1, wherein: the box body (1) is internally provided with a control component (5), a control panel (6), a buzzer (7) and a signal lamp (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022807931.6U CN213874865U (en) | 2020-11-27 | 2020-11-27 | Heat exchanger gas tightness testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022807931.6U CN213874865U (en) | 2020-11-27 | 2020-11-27 | Heat exchanger gas tightness testing device |
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| CN213874865U true CN213874865U (en) | 2021-08-03 |
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| CN202022807931.6U Active CN213874865U (en) | 2020-11-27 | 2020-11-27 | Heat exchanger gas tightness testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932993A (en) * | 2021-09-16 | 2022-01-14 | 苏州赫斯康通信科技有限公司 | Air pressure waterproof test system |
| CN114112463A (en) * | 2021-11-12 | 2022-03-01 | 沪东中华造船(集团)有限公司 | Novel installation and debugging method for compact efficient heat exchanger |
-
2020
- 2020-11-27 CN CN202022807931.6U patent/CN213874865U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932993A (en) * | 2021-09-16 | 2022-01-14 | 苏州赫斯康通信科技有限公司 | Air pressure waterproof test system |
| CN113932993B (en) * | 2021-09-16 | 2024-03-22 | 苏州赫斯康通信科技有限公司 | Waterproof test system of atmospheric pressure |
| CN114112463A (en) * | 2021-11-12 | 2022-03-01 | 沪东中华造船(集团)有限公司 | Novel installation and debugging method for compact efficient heat exchanger |
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