A dual-pipeline vacuum high-voltage ignition test system and test method thereof

Abstract

The present invention discloses a dual-pipeline vacuum high-voltage ignition test system and a test method thereof. The test system comprises a vacuum tank test environment module, an air intake pipeline module and a vacuum acquisition module; the vacuum tank test environment module comprises two vacuum tanks connected by a connecting pipeline, namely a main vacuum tank and an auxiliary vacuum tank, the connecting pipeline is provided with a balancing valve, each vacuum tank is provided with a tested power supply interface to connect the tested power supply and the tested equipment, each vacuum tank is provided with a vacuum pumping port to obtain a vacuum environment, each vacuum tank is also fixedly equipped with an air intake pipe, the air intake pipe is fixedly and sealedly inserted into the vacuum tank, the gas outlet of the air intake pipe penetrates into the vacuum tank body close to the electrode position of the tested power supply or the tested equipment to input gas to locally destroy the vacuum; the present invention can carry out vacuum ignition experiments in various modes, and has diversified functions.

Description

Technical Field

[0001] The invention relates to the field of high voltage electrical technology, and in particular to a double-pipeline vacuum high voltage ignition test system and a test method thereof. Background Art

[0002] In high-voltage electricity, there is a high-voltage power supply that is used in a high-vacuum environment. In actual application and production, it is necessary to test its various performance parameters and anti-spark interference performance when igniting under high vacuum. By intermittently and stably injecting trace gas elements into the high-voltage cavity, the power supply ignites under vacuum, and through long-term intermittent gas supply, continuous vacuum ignition occurs, thereby testing the equipment's anti-spark interference performance. In addition, testing whether the power supply has a sparking phenomenon when the vacuum degree changes instantly to a certain vacuum degree is also an important performance of the high-voltage power supply. However, there is currently a lack of a test device that can simultaneously test the above various performances. Summary of the invention

[0003] The purpose of the present invention is to provide a dual-pipeline vacuum high-voltage ignition test system to solve the problem of lack of high-voltage power supply parameter test device in the prior art.

[0004] Another object of the present invention is to provide a testing method for the dual-line vacuum high-voltage ignition testing system.

[0005] The technical solution adopted to achieve the purpose of the present invention is:

[0006] A dual-pipeline vacuum high-pressure ignition test system, comprising a vacuum tank test environment module, an air intake pipeline module and a vacuum acquisition module;

[0007] The vacuum tank test environment module comprises two vacuum tanks connected by a connecting pipeline, namely a main vacuum tank and a secondary vacuum tank, wherein a balancing valve is arranged on the connecting pipeline, each vacuum tank is provided with a power supply interface to be connected to the power supply and the device to be tested, each vacuum tank is provided with a vacuum port to obtain a vacuum environment, and each vacuum tank is also fixedly equipped with an air intake pipe, which is fixedly and sealedly inserted into the vacuum tank, and the gas outlet of the air intake pipe penetrates into the vacuum tank near the electrode position of the power supply or the device to be tested to input gas to locally destroy the vacuum;

[0008] The air intake pipeline module includes an air intake pipeline and an air intake stop valve, a pressure sensor and a gas mass flow controller mounted on the air intake pipeline; the air intake pipeline is connected to the gas inlet of the air intake pipe,

[0009] The vacuum obtaining module comprises a vacuum obtaining pipeline connected to the vacuum extraction port, an air extraction control valve arranged on the vacuum obtaining pipeline, a vacuum gauge and a vacuum extraction pump group connected to the vacuum obtaining pipeline.

[0010] In the above technical solution, the gas outlet is a narrow hole formed at the end of the intake pipe.

[0011] In the above technical solution, both ends of the connecting pipeline are respectively connected to the air inlet pipelines of the main vacuum tank body and the auxiliary vacuum tank body.

[0012] In the above technical solution, the tested power supply interface is arranged at the top of the vacuum tank body, the gas input port is arranged at the bottom of the vacuum tank body, and the vacuum port is arranged at the side of the vacuum tank body.

[0013] In the above technical solution, the air extraction control valve is an air extraction butterfly valve, the vacuum pump group includes a mechanical pump and a molecular pump, and the air intake stop valve is a small flow electromagnetic stop valve.

[0014] In the above technical solution, the exhaust butterfly valve is connected between the vacuum port and the vacuum obtaining pipeline through a flange O-ring seal.

[0015] In the above technical solution, the vacuum gauge is connected to the vacuum tank or the vacuum obtaining pipeline 14 by using a KF flange seal.

[0016] In the above technical solution, the vacuum acquisition pipeline is assembled through a CF high vacuum flange.

[0017] In the above technical solution, the diameter of the vacuum acquisition tube is 140-200 mm; the air intake pipeline is a stainless steel pipeline with a diameter of 3-6 mm.

[0018] In the above technical solution, the vacuum high-voltage ignition test device also includes an electrical control module, which includes a human-computer interaction unit, an embedded control circuit unit and a power supply unit. The embedded control circuit unit is respectively communicatively connected with the human-computer interaction unit, the air intake shut-off valve, the pressure sensor, the gas mass flow controller, the exhaust control valve, the vacuum gauge and the controller of the vacuum pump group.

[0019] In the above technical solution, the vacuum high-pressure ignition test device also includes a support structure, casters are provided at the bottom of the support structure, the vacuum tank body is fixed to the top of the support structure, the vacuum pump group is fixed to the lower part of the support structure, and the air intake stop valve, pressure sensor and gas mass flow controller are fixed on the positioning plate in the middle of the support structure.

[0020] In another aspect of the present invention, the test method of the dual-line vacuum high-voltage ignition test system includes the following two modes:

[0021] Mode 1: Close the balance valve, close the exhaust control valve of the auxiliary vacuum tank, start the exhaust control valve on the main vacuum tank, start the vacuum pump group on the main vacuum tank, select the main vacuum tank to evacuate, and stop automatically when the vacuum drops to the preset value. Close the exhaust control valve on the main vacuum tank, then open the air inlet stop valve on the main vacuum tank, and pass the gas set by the user into the main vacuum tank through the air inlet pipe to conduct experiments, and observe whether vacuum ignition can be achieved in the main vacuum tank, so as to test the power supply characteristics; or use a gas mass flow controller to control the gas flow into a step pulse flow, so as to achieve uninterrupted and highly repeatable supply of micro-flow pulse gas, and test various performance parameters of the power supply when it continuously ignites under high vacuum;

[0022] Mode 2: The system starts the vacuum pump group, opens the vacuum control valve on the auxiliary vacuum tank, closes the vacuum control valve on the main vacuum tank, selects the auxiliary vacuum tank for vacuuming, and automatically stops when the vacuum degree drops to the preset value. Then, the vacuum control valve on the auxiliary vacuum tank is closed, and then the air inlet stop valve on the auxiliary vacuum tank is opened to adjust the required flow or vacuum degree of the auxiliary vacuum tank. Then, the air inlet stop valve on the auxiliary vacuum tank is closed, and the balance valve is instantly opened to quickly balance the pressure in the main vacuum tank and the auxiliary vacuum tank to conduct an experiment to test whether the power supply can ignite automatically under the condition of sudden change in vacuum degree, thereby testing the power supply characteristics.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The dual-pipeline vacuum high-voltage ignition test system of the present invention has multiple test modes. The first one is to perform an ignition experiment on a high-voltage electrical device (high-voltage power supply) when a certain fixed flow rate of gas is input. The second one is to use the air intake pipeline to control the flow rate into a step pulse flow rate, and to achieve uninterrupted and highly repeatable supply of micro-flow pulse gas to test various performance parameters of the power supply when it continuously ignites under high vacuum. The third one is to test whether there is an ignition phenomenon when the vacuum degree of the power supply changes instantly to a certain vacuum degree.

[0025] 2. The equipment reduces the vacuum degree to 10 -4 After Pa, the air intake pipeline flow is precisely controlled to be transported into the vacuum tank to destroy the local vacuum. When the power supply is working normally, the user can precisely control the ignition time by entering the ignition interval time in the human-computer interaction unit in the control module.

[0026] 3. This device can be tested for many consecutive days without interruption of ignition test, and the overall operation is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shown is a side view of a dual-line vacuum high-pressure ignition test system.

[0028] Figure 2 It is a schematic diagram of the connection structure between the air intake pipe and the vacuum tank body.

[0029] Figure 3 This is the main view of the dual-pipeline vacuum high-voltage ignition test system.

[0030] Figure 4 It is the schematic diagram of the double-line vacuum high-voltage ignition test system.

[0031] In the figure: 1-gas outlet, 2-human-computer interaction unit, 3-embedded control circuit unit, 4-molecular pump controller, 5-support structure, 6-castors, 7-balancing valve, 8-vacuum tank, 9-test power interface, 10-intake pipe, 11-intake pipeline, 12-intake stop valve, 13-gas mass flow controller, 14-vacuum acquisition pipeline, 15-exhaust control valve, 16-vacuum gauge, 17-mechanical pump, 18-molecular pump. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Example 1

[0034] A dual-pipeline vacuum high-pressure ignition test system, comprising a vacuum tank test environment module, an air intake pipeline module and a vacuum acquisition module;

[0035] The vacuum tank test environment module comprises two vacuum tanks 8 connected by a connecting pipeline, namely a main vacuum tank 8-1 and a secondary vacuum tank 8-2, wherein a balancing valve 7 is arranged on the connecting pipeline, each vacuum tank 8 is provided with a power supply interface 9 to be connected to the power supply and the device to be tested, each vacuum tank 8 is provided with a vacuum port to obtain a vacuum environment, and each vacuum tank 8 is also fixedly equipped with an air intake pipe 10, the air intake pipe 10 is fixedly and sealedly inserted into the vacuum tank 8, and the gas outlet 1 of the air intake pipe 10 penetrates into the vacuum tank body near the electrode position of the power supply or the device to be tested to input gas to locally destroy the vacuum;

[0036] The air intake pipeline module includes an air intake pipeline 11 and an air intake stop valve 12, a pressure sensor and a gas mass flow controller 13 mounted on the air intake pipeline 11; the air intake pipeline 11 is connected to the gas inlet of the air intake pipe,

[0037] The vacuum obtaining module includes a vacuum obtaining pipeline 14 connected to the vacuum extraction port, an exhaust control valve 15 arranged on the vacuum obtaining pipeline 14 , a vacuum gauge 16 , and a vacuum pump group connected to the vacuum obtaining pipeline 14 .

[0038] Example 2

[0039] The test method of the dual-pipeline vacuum high-voltage ignition test system includes the following two modes:

[0040] Mode 1: Close the balance valve V4, close the vacuum control valve V6 on the auxiliary vacuum tank 8-2, start the vacuum control valve V5 on the main vacuum tank 8-1, start the vacuum pump group on the main vacuum tank 8-1, select the main vacuum tank to vacuumize, and the vacuum degree drops to 10 -4 Pa and then it stops automatically, and the air extraction control valve V5 is turned off. Then, the air inlet stop valve 12 on the main vacuum tank 8-1 is opened, and the gas set by the user is introduced into the main vacuum tank 8-1 through the air inlet pipe to conduct experiments, and observe whether vacuum ignition can be achieved in the main vacuum tank 8-1, so as to test the power supply characteristics;

[0041] Alternatively, the gas mass flow controller 13 is used to control the gas flow rate into a step pulse flow rate, and to achieve uninterrupted and highly repeatable supply of micro-flow pulse gas, to test various performance parameters of the power supply when it is continuously ignited under high vacuum;

[0042] Mode 2: The system starts the pump group, opens the vacuum control valve V6 on the auxiliary vacuum tank 8-2, closes the vacuum control valve V5 on the main vacuum tank 8-1, selects the auxiliary vacuum tank to evacuate, and the vacuum degree drops to 10 -4 It stops automatically after Pa, closes the exhaust control valve V6, and then opens the air inlet stop valve 12 on the auxiliary vacuum tank 8-2. The user sets the required flow or vacuum degree to adjust the vacuum degree of the auxiliary vacuum tank, closes the air inlet stop valve 12 on the auxiliary vacuum tank 8-2, and instantly opens the balance valve V4 to quickly balance the pressure in the main vacuum tank and the auxiliary vacuum tank to conduct an experiment to test whether the power supply ignites automatically under the condition of sudden change in vacuum degree, thereby testing the power supply characteristics.

[0043] Example 3

[0044] As a preferred embodiment, the tested power interface is arranged at the top of the vacuum tank body 8, the gas input port is arranged at the bottom of the vacuum tank body 8, and the vacuum port is arranged at the side of the vacuum tank body 8. The tested power interface 9 is a blind plate that can be matched with a quick-plug power supply, and an o-ring is embedded on the blind plate. The tested power interface 9 can be covered with a blind plate to prevent dust from falling.

[0045] As a preferred embodiment, both ends of the connecting pipeline are respectively connected to the air intake pipelines of the main vacuum tank body and the auxiliary vacuum tank body.

[0046] As a preferred embodiment, the exhaust control valve 15 is an exhaust butterfly valve, and the vacuum pump group includes a mechanical pump 17 and a molecular pump 18. The molecular pump 18 is controlled by the molecular pump controller 4. The vacuum system is directly related to the diameter and pumping speed of the vacuum acquisition pipeline 14. Therefore, the vacuum acquisition pipeline 14 with a diameter of 160 mm is selected in this system. When vacuuming, the mechanical pump 17 pre-extracts and the molecular pump 18 secondary pumps are used to obtain high vacuum. The pumping speed of the molecular pump 18 is 160L / S, and the pumping speed of the mechanical pump 17 is 2L / S. The ultimate vacuum reaches 1×10 within 20 minutes. -4 Pa.

[0047] As a preferred embodiment, the exhaust butterfly valve is connected between the vacuum port and the vacuum obtaining pipeline 14 through a flange O-ring seal, the vacuum gauge 16 is connected to the vacuum tank 8 or the vacuum obtaining pipeline 14 through a KF flange seal, and the vacuum obtaining pipeline 14 is assembled through a CF high vacuum flange. After testing, the vacuum degree can reach 10 -4 Pa.

[0048] Preferably, the flow rate of the small flow stop valve is less than 10SLM. Since a small amount of gas entering under high vacuum will cause a large fluctuation in the vacuum, according to the power supply test requirements, the intake flow rate cannot exceed 10SCCM. Therefore, the pipeline selected for the intake pipeline 11 is a 3 or 6 mm stainless steel pipeline (preferably 316L stainless steel, and the helium mass spectrometer leak detection reaches 10 after the pipeline is sealed). -8 sccsHe), according to the flow capacity, the air inlet stop valve 12 uses a small flow electromagnetic stop valve, and the gas mass flow controller 13 uses a full-scale 10SCCM product to precisely control the gas.

[0049] As a preferred method, the vacuum high-voltage ignition test device also includes an electrical control module, which includes a human-computer interaction unit 2, an embedded control circuit unit 3 and a power supply unit. The embedded control circuit unit is respectively connected to the human-computer interaction unit, the air intake stop valve 12, the pressure sensor, the gas mass flow controller 13, the exhaust control valve 15, the vacuum gauge 16 and the controller of the vacuum pump group. In order to realize the control of gas flow, the control of the solenoid valve switch, the control of the vacuum equipment, the reading of the vacuum degree, the real-time data can be recorded and saved in a document format that can be opened by EXCEL. When the flow is out of control or leaking, an abnormal alarm is generated. In addition, the system can allow the user to manually set the vacuum degree and the valve opening time to achieve precise automatic control of the vacuum degree. On this basis, the system can also be programmed using configuration software to facilitate user operation.

[0050] As a preferred embodiment, the vacuum high-voltage ignition test device further includes a support structure 5, a caster 6 is provided at the bottom of the support structure 5, the vacuum tank 8 is fixed to the top of the support structure 5, the vacuum pump is fixed to the lower part of the support structure 5, and the air intake stop valve 12, the pressure sensor and the gas mass flow controller 13 are fixed to the positioning plate in the middle of the support structure 5. Ensure the stability of the entire device and the stability of the fixing of each component. The support structure 5 is built with 40 profiles as a whole, weighing 500KG, which is strong and durable, can absorb the vibration generated by the pump group for a long time, and does not interfere with the flow control part.

[0051] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0052] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0053] The above description is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the scope of protection of the present invention.

Claims

1. A dual-line vacuum high-voltage ignition test system, characterized in that: It includes a vacuum tank test environment module, an air intake pipeline module and a vacuum acquisition module; The vacuum tank test environment module comprises two vacuum tanks connected by a connecting pipeline, namely a main vacuum tank and a secondary vacuum tank, wherein a balancing valve is arranged on the connecting pipeline, each vacuum tank is provided with a power supply interface to be connected to the device to be tested, each vacuum tank is provided with a vacuum port to obtain a vacuum environment, and each vacuum tank is also fixedly equipped with an air intake pipe, which is fixedly and sealedly inserted into the vacuum tank, and the gas outlet of the air intake pipe penetrates into the vacuum tank near the electrode position of the device to be tested to input gas to locally destroy the vacuum; The air intake pipeline module includes an air intake pipeline and an air intake stop valve, a pressure sensor and a gas mass flow controller installed on the air intake pipeline; the air intake pipeline is connected to the gas inlet of the air intake pipe, and the vacuum acquisition module includes a vacuum acquisition pipeline connected to the vacuum extraction port, an air extraction control valve arranged on the vacuum acquisition pipeline, a vacuum gauge and a vacuum extraction pump group connected to the vacuum acquisition pipeline; The air extraction control valve is an air extraction butterfly valve, the vacuum pump group includes a mechanical pump and a molecular pump, and the air intake stop valve is a small flow electromagnetic stop valve; The exhaust butterfly valve is connected between the vacuum port and the vacuum obtaining pipeline through a flange O-ring seal; The tested power supply interface is arranged at the top of the vacuum tank body, the gas inlet is arranged at the bottom of the vacuum tank body, and the vacuum port is arranged at the side of the vacuum tank body.

2. The dual-line vacuum high-voltage ignition test system according to claim 1, characterized in that: The gas outlet is a narrow hole formed at the end of the intake pipe.

3. The dual-pipeline vacuum high-voltage ignition test system according to claim 1, characterized in that: Both ends of the communication pipeline are respectively connected to the air inlet pipelines of the main vacuum tank body and the auxiliary vacuum tank body.

4. The dual-pipeline vacuum high-voltage ignition test system according to claim 1, characterized in that: The vacuum gauge is sealed and connected to the vacuum tank or the vacuum obtaining pipeline by using a KF flange, and the vacuum obtaining pipeline is assembled by a CF high vacuum flange.

5. The dual-pipeline vacuum high-voltage ignition test system according to claim 1, characterized in that: The diameter of the vacuum acquisition tube is 140-200 mm; the air intake pipeline is a stainless steel pipeline with a diameter of 3-6 mm.

6. The dual-pipeline vacuum high-voltage ignition test system according to claim 1, characterized in that: The vacuum high-voltage ignition test system also includes an electrical control module, which includes a human-computer interaction unit, an embedded control circuit unit and a power supply unit. The embedded control circuit unit is respectively communicatively connected to the human-computer interaction unit, the air intake shut-off valve, the pressure sensor, the gas mass flow controller, the exhaust control valve, the vacuum gauge and the controller of the vacuum pump group.

7. The dual-pipeline vacuum high-voltage ignition test system according to claim 1, characterized in that: The vacuum high-pressure ignition test system also includes a support structure, the bottom of the support structure is provided with casters, the vacuum tank body is fixed to the top of the support structure, the vacuum pump group is fixed to the lower part of the support structure, and the air intake stop valve, pressure sensor and gas mass flow controller are fixed to the positioning plate in the middle of the support structure.

8. The test method of the dual-pipeline vacuum high-voltage ignition test system according to any one of claims 1 to 7, comprising the following two modes: Mode 1: Close the balance valve, close the exhaust control valve of the auxiliary vacuum tank, start the exhaust control valve on the main vacuum tank, start the vacuum pump group on the main vacuum tank, select the main vacuum tank to evacuate, and stop automatically when the vacuum drops to the preset value. Close the exhaust control valve on the main vacuum tank, then open the air inlet stop valve on the main vacuum tank, and pass the gas set by the user into the main vacuum tank through the air inlet pipe to conduct experiments, and observe whether vacuum ignition can be achieved in the main vacuum tank, so as to test the power supply characteristics; Or use a gas mass flow controller to control the gas flow into a step pulse flow, to achieve uninterrupted and highly repeatable supply of micro-flow pulse gas, and test various performance parameters of the power supply when it is continuously ignited under high vacuum; Mode 2: The system starts the pump group, opens the exhaust control valve on the auxiliary vacuum tank, closes the exhaust control valve on the main vacuum tank, selects the auxiliary vacuum tank to evacuate, and automatically stops when the vacuum degree drops to the preset value. Close the exhaust control valve on the auxiliary vacuum tank, then open the air inlet stop valve on the auxiliary vacuum tank, adjust the required flow or vacuum degree of the auxiliary vacuum tank, close the air inlet stop valve on the auxiliary vacuum tank, and instantly open the balance valve to quickly balance the pressure in the main vacuum tank and the auxiliary vacuum tank to conduct an experiment to test whether the power supply can ignite automatically under the condition of sudden change in vacuum degree, thereby testing the power supply characteristics.

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