Airtight test device for radiator

Abstract

The utility model belongs to the technical field of air tightness test, and discloses a radiator air tightness test device, which comprises a mobile platform, and an inflator pump, an air storage tank, a pressure transmitter and a controller which are arranged on the mobile platform, one end of the air storage tank is connected with the inflator pump, and the other end is connected with a radiator to be detected; the pressure transmitter is connected with the gas storage tank and is used for detecting the pressure of the gas storage tank; and the controller is connected with the pressure transmitter and the inflator pump, and is used for receiving pressure data from the pressure transmitter, outputting an airtight test result and controlling the inflator pump to start and stop at the same time. Through the arrangement, the pressure transmitter detects the pressure in real time, the controller judges whether the pressure is qualified or not, the air pump is controlled to act at the same time, one-key rapid detection is achieved, and more accurate and comprehensive test data can be obtained through real-time detection, accurate control of start and stop and protection of the radiator and the test device.

Description

Technical Field

[0001] The utility model belongs to the technical field of air tightness test, and in particular relates to an air tightness test device for a radiator. Background Art

[0002] Cooling towers are key components of railway locomotives, and radiators, as a key component in cooling towers, determine the quality of cooling towers. At present, the radiators used in cooling towers on Chinese railway locomotives are basically plate-fin radiators. As the service life increases, leakage failures increase and are difficult to repair. Compared with plate-fin radiators, tube-fin radiators have faster heat dissipation speed, and hot liquid can be quickly cooled through pipes. If there is a leakage problem, the core of the tube-fin radiator only needs to seal the leaking pipe to continue to use, which meets the current locomotive maintenance and control radiator life cost requirements. In addition, tube-fin radiators have a wide range of application scenarios, especially in some occasions that require high reliability, such as military industry, special equipment, ships, chemical industry and power systems. Due to the special requirements of lightweight and miniaturization in the field of rail transportation, it has been generally believed that tube-fin radiators cannot achieve the power density of plate-fin radiators. However, tube-fin radiators rely on special tube and fin enhanced heat exchange technology to subvert this cognition, and the heat dissipation power density is greatly improved compared with plate-fin radiators. Based on this achievement, coupled with its advantages such as high reliability, it will gradually replace plate-fin radiators in the rail transit field.

[0003] At present, during the production process of tube-fin radiators, two airtightness tests are required, one is after the tube expansion operation, and the second is after the radiator is assembled. The radiator can only be tested for the second airtightness after assembly after the first airtightness test is passed. Existing tube-fin radiators do not have very professional airtightness test equipment, and the test is very complicated and prone to errors.

[0004] Therefore, there is an urgent need for a device that can conveniently and accurately perform an airtight test on a tube-fin radiator to solve the above-mentioned problems existing in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a test device that can conveniently and accurately detect the air tightness of a tube-fin radiator. The specific technical solution is as follows:

[0006] A radiator air tightness test device comprises a mobile platform and an air pump, an air storage tank, a pressure transmitter and a controller arranged on the mobile platform;

[0007] One end of the gas storage tank is connected to the air pump, and the other end is connected to the radiator to be tested;

[0008] The pressure transmitter is connected to the gas storage tank and is used to detect the pressure of the gas storage tank;

[0009] The controller is connected with the pressure transmitter and the air pump.

[0010] Preferably, the controller is also provided with a start / stop button, and the air pump is started / stopped manually via the start / stop button or automatically started / stopped by the controller detecting pressure data.

[0011] Preferably, a pipeline connecting the air pump and the air tank is also provided with a locked residual pressure release three-way valve, a filter pressure reducing valve and a soft-start solenoid valve in sequence, and the controller is connected to the soft-start solenoid valve.

[0012] Preferably, it also includes a manual pressure relief valve, which is arranged on a pipeline connecting the gas storage tank and the radiator.

[0013] Preferably, it also includes a battery, and the battery is used to supply power to the airtight test device.

[0014] Preferably, it also includes a display screen, which is connected to the controller.

[0015] Preferably, it further comprises a charging component, the charging component comprises a power interface, an indicator light and a charger, one end of the charger is connected to the battery through the power interface, and the other end is connected to an external power source;

[0016] The indicator light is used to display the battery power and indicate the charging status;

[0017] The charger is also connected to the controller.

[0018] Preferably, a paperless recorder is also included, and the pressure transmitter is also connected to the paperless recorder to store its pressure data.

[0019] Preferably, the gas storage tank is connected to the radiator to be tested via a quick connector.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model provides a radiator air tightness test device, including a mobile platform and an air pump, an air tank, a pressure transmitter and a controller arranged on the mobile platform; one end of the air tank is connected to the air pump, and the other end is connected to the radiator to be tested; the pressure transmitter is connected to the air tank, and is used to detect the pressure of the air tank; the controller is connected to the pressure transmitter and the air pump, and is used to receive pressure data from the pressure transmitter and output air tightness test results, and control the start and stop of the air pump. Through the above settings, the pressure transmitter detects the pressure in real time and the controller determines whether it is qualified, and controls the action of the air pump at the same time, realizing one-button quick testing, and through real-time detection and accurate control of start and stop, the radiator and the test device are protected, and more accurate test data are obtained.

[0022] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the radiator airtightness test device of the utility model;

[0024] Figure 2 yes Figure 1 Schematic diagram of the radiator airtightness test device in use;

[0025] In the figure: 1. Mobile platform; 2. Air pump; 3. Soft start solenoid valve; 4. Filter pressure reducing valve; 5. Lockable residual pressure release three-way valve; 6. Paperless recorder; 7. Gas tank; 8. Pressure transmitter; 9. Manual pressure relief valve; 10. Charger; 11. Display screen; 12. Battery; 13. Quick connector; 14. Radiator; 15. Sink. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0027] Example:

[0028] A radiator airtightness test device, reference Figure 1 and Figure 2 , including a mobile platform 1 and an air pump 2, an air tank 7, a pressure transmitter 8 and a controller arranged on the mobile platform 1; one end of the air tank 7 is connected to the air pump 2, and the other end is connected to the radiator 14 to be tested; the radiator needs to be immersed in a water tank 15, and the pressure transmitter 8 is connected to the air tank 7 to detect the pressure of the air tank 7; the controller is connected to the pressure transmitter 8 and the air pump 2, and is used to receive pressure data from the pressure transmitter 8 and output the airtightness test result, and control the start and stop of the air pump 2. Through the above settings, the pressure transmitter detects the pressure in real time and the controller determines whether it is qualified, and controls the action of the air pump at the same time, realizing a one-button quick test, and through real-time detection and accurate control of start and stop, the radiator and the test device are protected, and more accurate test data are obtained.

[0029] This embodiment further includes a paperless recorder 6 , and the pressure transmitter 8 is also connected to the paperless recorder 6 for storing pressure data.

[0030] A pressure transmitter is installed on the gas tank. The pressure transmitter converts the pressure signal into a standard 4-20mA signal and sends it to a paperless recorder. The paperless recorder records the parameters (air pressure, ambient temperature and ambient humidity) during the radiator air tightness test for the test personnel to analyze the test data. The pressure transmitter also sends the pressure signal to the controller (preferably a PLC programmable logic controller). The controller runs the application program, which judges the test data according to the judgment criteria specified in the process documents and outputs the results of the radiator air tightness test. The data of the pressure transmitter and controller are accurate to three decimal places, ensuring the accuracy required for the test.

[0031] The controller is also provided with a start / stop button, and the air pump 2 can be started and stopped manually by the start / stop button or automatically started and stopped by the controller detecting pressure data. When the tester reaches the value specified in the process document according to the inflation pressure, he clicks the start / stop button, and the air pump stops inflating. The tester can also stop at any time according to different needs, or when the upper limit pressure is reached, in order to protect the device and the radiator, the controller will automatically control the soft start solenoid valve to energize and cut off the air connection between the radiator and the air pump.

[0032] The pipeline connecting the air pump 2 and the air tank 7 is also provided with a three-way valve 5 with a lock for releasing residual pressure, a filter pressure reducing valve 4 and a soft-start solenoid valve 3 in sequence, and the controller is connected to the soft-start solenoid valve 3, and the controller controls the soft-start solenoid valve 3 to cut off the air connection between the radiator 14 and the air pump 2 according to the pressure data. A manual pressure relief valve 9 is also included, and the manual pressure relief valve 9 is arranged on the pipeline connecting the air tank 7 and the radiator 14.

[0033] The device of this embodiment also includes a battery 12 and a charging component. The battery 12 is used to power the airtight test device. The charging component includes a power interface, an indicator light and a charger 10. One end of the charger 10 is connected to the battery 12 through the power interface, and the other end is connected to an external power source; the indicator light is used to display the power of the battery 12 and indicate the charging status; the charger 10 is also connected to a controller for detecting the charging status of the battery 12 and controlling its input and output. Through the mobile platform, the device can be moved freely, which is very convenient for conducting an airtight test of the radiator. When the radiator needs to be tested for airtightness, the test device can be directly pushed from the storage place to the side of the radiator, and then the airtight test can be carried out by connecting the air pipe, which is very convenient. The airtight test device has its own power supply and does not need to be connected to the mains. It can be used with a mobile platform to adapt to the field without an external power supply to conduct airtightness tests and inspections on the radiator. When the battery power is insufficient, it can be charged.

[0034] In this embodiment, a display screen 11 is also included, and the display screen 11 is connected to the controller. When the test result needs to be judged, it is only necessary to check the display screen on the radiator test device. The airtight test device will judge the test data according to the judgment criteria formulated in the process file and automatically output the result of the airtight test on the screen.

[0035] The gas storage tank is quickly connected to the radiator 14 to be tested via a quick connector 13 .

[0036] When the radiator needs to be tested for air tightness, first inject a certain amount of clean water into the water tank to ensure that the radiator is covered. The operator hoists the radiator into the test water tank, pushes over the radiator air tightness test device of this embodiment, connects the radiator and the test device of this embodiment through the quick connector, first inflates the radiator, presses the start-stop button, and the controller controls the test device to automatically connect the battery and the air pump. The air pump starts, and the compressed air generated by the air pump passes through the three-way valve with a locked residual pressure release, the filter pressure reducing valve and the soft start valve in turn, enters the air storage tank and then is sent to the radiator. When the air pressure reaches the value given in the process document, observe whether the air pressure value is stable. When the air pressure value is stable, manually stop the inflation and turn off the air pump. When the test time reaches the time required by the process document, the test is completed and the test results are output.

[0037] Before the test ends, the tester pulls up the manual pressure relief valve to release the residual compressed air in the test object (radiator). After the gas in the radiator is completely released, the tester removes the air pipe connecting the test device and the radiator, and moves the mobile platform to a special storage area to keep the test equipment and radiator in the best state and extend their service life.

[0038] As the tester uses the device, the battery consumes more and more power. When it reaches the point where charging is required, the indicator light indicates a lack of power. At this point, the test device needs to be charged. When the tester connects the device to a 220V AC power source, the controller cuts off the battery output and the air pump does not start. The corresponding charger is put into use. During the charging process, the charger monitors the battery temperature, charging current, and battery voltage to protect the battery and extend its life. During the charging process, the indicator light indicates that it is charging. When the battery is fully charged, the indicator light shows that it is fully charged. If the tester does not unplug the 220V AC power source, the controller will automatically cut off the circuit between the charger and the battery to avoid overcharging.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A radiator airtightness test device, characterized in that: It comprises a mobile platform (1), and an air pump (2), an air storage tank (7), a pressure transmitter (8), and a controller arranged on the mobile platform (1); One end of the gas storage tank (7) is connected to the gas pump (2), and the other end is connected to the radiator (14) to be tested; The pressure transmitter (8) is connected to the gas storage tank (7) and is used to detect the pressure of the gas storage tank (7); The controller is connected to the pressure transmitter (8) and the air pump (2).

2. A radiator airtightness test device according to claim 1, characterized in that: The controller is also provided with a start / stop button, and the air pump (2) is started / stopped manually via the start / stop button or is automatically started / stopped by the controller detecting pressure data.

3. A radiator airtightness test device according to claim 1, characterized in that: The pipeline connecting the air pump (2) and the air storage tank (7) is also provided with a locked residual pressure release three-way valve (5), a filter pressure reducing valve (4) and a soft start solenoid valve (3) in sequence, and the controller is connected to the soft start solenoid valve (3).

4. A radiator airtightness test device according to claim 1, characterized in that: It also includes a manual pressure relief valve (9), which is arranged on a pipeline connecting the gas storage tank (7) and the radiator (14).

5. The radiator airtightness test device according to claim 1, characterized in that: It also includes a storage battery (12), and the storage battery (12) is used to supply power to the airtight test device.

6. A radiator airtightness test device according to claim 1, characterized in that: It also comprises a display screen (11), wherein the display screen (11) is connected to the controller.

7. The radiator airtightness test device according to claim 1, characterized in that: It also includes a charging component, which includes a power interface, an indicator light and a charger (10), one end of the charger (10) is connected to the storage battery (12) through the power interface, and the other end is connected to an external power source; The indicator light is used to display the power level of the storage battery (12) and indicate the charging status; The charger (10) is also connected to the controller.

8. The radiator airtightness test device according to claim 1, characterized in that: It also includes a paperless recorder (6), and the pressure transmitter (8) is also connected to the paperless recorder (6) for storing pressure data.

9. The radiator airtightness test device according to claim 1, characterized in that: The gas storage tank is connected to a radiator (14) to be tested via a quick connector (13).

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