Gas breakdown voltage detection model and device

Abstract

The utility model provides a gas breakdown voltage detection model and device. The gas breakdown voltage detection model comprises a shell, a first screw rod, a first electrode assembly, a second electrode assembly and a second screw rod. And the first screw rod is also provided with an adjusting module, and the relative distance between the first electrode assembly and the second electrode assembly is adjusted through the adjusting module, so that accurate test data is obtained in the test process, parameters such as a voltage value of gas breakdown are improved, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas discharge, in particular to a gas breakdown voltage detection model and a device. Background Art

[0002] Stable chemical properties, good insulation strength and excellent arc extinguishing effect make SF6 and N2 gases widely used in insulation protection of high-voltage equipment. However, they have defects such as high greenhouse effect coefficient, high liquefaction temperature and sensitivity to uneven electric fields, which greatly limit the application of SF6, N2 gas or other mixed gases. Therefore, it is necessary to mix with other gases to conduct a breakdown voltage detection model and a detection device to study its detection performance. In the prior art, when measuring and calculating the breakdown voltage value of the mixed gas, it has technical problems such as low accuracy of the mixed gas breakdown voltage detection and unsatisfactory applicability. Utility Model Content

[0003] Aiming at the shortcomings of the existing methods, the utility model proposes a gas breakdown voltage detection model and a detection device, which are used to detect the breakdown voltages of different mixed gases and improve the detection accuracy.

[0004] The present utility model embodiment provides a gas breakdown voltage detection model, including:

[0005] The housing has a receiving cavity;

[0006] a first screw, one end of which is connected to the housing, and the other end of which extends into the accommodating cavity;

[0007] A first electrode assembly, disposed at the other end of the first screw;

[0008] a second electrode assembly, opposite to the first electrode assembly, with a gap between the first electrode assembly and the second electrode assembly; and

[0009] a second screw rod, wherein the second screw rod is insulated and disposed at the other end of the housing, one end of the second screw rod is disposed in the accommodating cavity, and the other end of the second screw rod extends to the outside of the housing;

[0010] The second electrode assembly is disposed at one end of the second screw in the accommodating cavity, and an adjustment module is also disposed on the first screw, and the adjustment module is used to adjust the relative distance between the first electrode assembly and the second electrode assembly.

[0011] According to an embodiment of the present invention, the inner diameter of the first screw is smaller than the inner diameter of the second screw.

[0012] According to an embodiment of the present invention, the first electrode assembly includes any one of a plate electrode, a spherical electrode, a rod electrode, and a needle electrode.

[0013] According to an embodiment of the present invention, the area of ​​the first electrode assembly is smaller than or equal to the area of ​​the second electrode assembly.

[0014] According to an embodiment of the present invention, the gap distance between the first electrode assembly and the second electrode assembly is set to 8 mm to 12 mm.

[0015] According to an embodiment of the utility model, the gas breakdown voltage detection model further includes a gas density relay, which is arranged on one side of the shell and communicated with the accommodating cavity, and the gas density relay is used to detect the gas in the accommodating cavity.

[0016] According to an embodiment of the utility model, the gas density relay includes a calibration valve, and the calibration valve is connected to the housing via connecting bolts.

[0017] According to an embodiment of the utility model, the gas breakdown voltage detection model further includes an insulating sleeve, the insulating sleeve is arranged at the other end of the shell, and a part of the second screw is arranged in the insulating sleeve.

[0018] According to an embodiment of the utility model, the first screw rod includes a first sub-rod and a second sub-rod, and the adjustment module is configured as a double-ended internally threaded tube;

[0019] The first sub-rod and the second sub-rod are connected via the double-headed internally threaded tube, and the first sub-rod is arranged on a side close to the flange, and the first electrode assembly is arranged at an end of the second sub-rod.

[0020] According to an embodiment of the present utility model, it includes a gas breakdown voltage detection model provided in an embodiment of the present utility model.

[0021] The beneficial technical effects brought about by the technical solution provided by the embodiment of the utility model include: the utility model sets up a gas breakdown voltage detection model and a detection device. The gas breakdown voltage detection model includes a shell, a first screw, a first electrode assembly, a second electrode assembly and a second screw. In addition, an adjustment module is also provided on the first screw, and the relative distance between the first electrode assembly and the second electrode assembly is adjusted by the adjustment module, so that accurate test data can be obtained during the test process, thereby improving parameters such as the voltage value of the gas breakdown and improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of a gas breakdown voltage detection model provided in an embodiment of the utility model;

[0024] Figure 2 It is a detection device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions of the technical solutions of the embodiments of the present invention and do not constitute a limitation on the technical solutions of the embodiments of the present invention.

[0026] In the description of the present invention, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present invention, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The utility model provides a gas breakdown voltage detection model in an embodiment, and improves the detection model in a breakdown voltage detection device, thereby achieving accurate measurement of the breakdown voltage data of different gases, thereby improving the detection accuracy and reliability of the device.

[0030] like Figure 1 As shown, Figure 1The structure diagram of the gas breakdown voltage detection model provided in the embodiment of the utility model is as follows. Specifically, the gas breakdown voltage detection model includes a housing 2 , a flange 1 , a first screw 30 , a first electrode assembly 34 , a second electrode assembly 35 , a second screw 36 and an adjustment module 32 .

[0031] Specifically, the gas breakdown voltage detection model provided in the embodiment of the utility model is set in the gas breakdown voltage detection device, and the housing 2 has a accommodating chamber 38. When the breakdown voltage of different gases is detected, the corresponding gas is introduced into the accommodating chamber 38. For example, SF6, N2, etc. are introduced into the accommodating chamber 38.

[0032] Meanwhile, the flange 1 is arranged at one end of the housing 2, and the housing can be sealed by the flange 1. In the present invention, the flange 1 can be fixed and sealed with the housing by bolts 7. Meanwhile, a sealing ring 5 is also arranged between the flange 1 and the housing 2, thereby improving the sealing effect.

[0033] Further, the first screw 30 is disposed in the accommodating cavity 38, one end of the first screw 30 is connected to the flange 1, and the other end of the first screw 30 extends into the accommodating cavity 38. The first screw 30 can be configured to have multiple sections, and the length of the first screw 30 is adjustable.

[0034] Specifically, the first screw rod 30 may include a first sub-rod 31 and a second sub-rod 33. The detection model further includes an adjustment module 32. When set, the first sub-rod 31 and the second sub-rod 33 are connected through the adjustment module 32, and the adjustment module 32 is set on the first screw rod, and the adjustment module 32 can be used to adjust the relative distance between the first electrode assembly 34 and the second electrode assembly 35.

[0035] Specifically, the adjustment module 32 can be configured as a double-ended internally threaded tube, one end of which is connected to the first sub-rod 31 , the other end of which is connected to the second sub-rod 33 , and the first sub-rod 31 is disposed on a side close to the flange 1 .

[0036] Meanwhile, the first electrode assembly 34 is arranged at an end of the second sub-rod 33 away from the flange. When the distance of the first electrode assembly 34 needs to be adjusted, the adjustment module 32 can be rotated to control the extended length of the first sub-rod 31 and the second sub-rod 33 through the adjustment module 32, thereby achieving the control of the relative distance between the first electrode assembly 34 and the second electrode assembly 35.

[0037] In the embodiment of the utility model, when setting the detection model, the second electrode assembly 35 and the first electrode assembly 34 are arranged relative to each other, and a gap is arranged between the first electrode assembly 34 and the second electrode assembly 35, and both electrode assemblies can be arranged as plate-shaped electrode plates. Optionally, the first electrode assembly 34 can also be arranged as any one of a ball electrode, a rod electrode, and a needle electrode, and the second electrode assembly 35 can be arranged in different shapes according to requirements. In the utility model, the second electrode assembly is arranged as a plate-shaped electrode.

[0038] Furthermore, since the first electrode assembly 34 is opposite to the second electrode assembly 35, the area of ​​the first electrode assembly 34 is less than or equal to the area of ​​the second electrode assembly 35, which is the surface area of ​​the two opposite plates. At the same time, the distance between the first electrode assembly 34 and the second electrode assembly 35 is set to 8 mm to 12 mm, so that the distance between the two electrode assemblies can be adjusted by controlling the adjustment module 32, and adjusted to the corresponding distance according to the different gases, thereby improving the accuracy of its voltage detection.

[0039] At the same time, the second screw 36 is arranged at the other end of the shell 2 opposite to the flange 1, and the second screw 36 is insulated from the shell 2, one end of the second screw 36 is arranged in the accommodating cavity 38, and the other end of the second screw 36 extends to the outside of the shell 2, and when set, the diameter of the second screw in the accommodating cavity 38 is smaller than the diameter of the second screw outside the accommodating cavity 38, thereby avoiding the second screw 36 from interfering with other components in the accommodating cavity 38.

[0040] In the embodiment of the utility model, the diameter of the first screw 30 is smaller than the diameter of the second screw 36. Specifically, the inner diameter of the first screw 30 is smaller than the inner diameter of the second screw 36. Optionally, the first screw 30 can be set to a screw with a diameter of 10 mm, and the portion of the second screw 36 disposed in the accommodating cavity 38 has a corresponding diameter of 100 mm, and the portion disposed outside the accommodating cavity 38 has a diameter of 150 mm.

[0041] Further, the second electrode assembly 35 is disposed at one end of the second screw 36 and disposed in the accommodating cavity 38. When being disposed, the second electrode assembly 35 can be connected and fixed to the second screw 36 through a connecting portion. And the diameter of the connecting portion can be the same as the diameter of the first screw.

[0042] Furthermore, the gas breakdown voltage detection model also includes a gas density relay 4, which is arranged on one side of the housing 2 and communicated with the accommodating chamber 38, and the gas density relay 4 is used to detect the gas in the accommodating chamber 38. The gas density relay 4 includes a calibration valve 14, and the calibration valve 14 is connected to the housing 2 through a connecting bolt 10. When connected, it is also fixed and sealed by a flat washer 8 and a spring washer 9, thereby improving its connection effect.

[0043] Further, in the embodiment of the utility model, when the second screw 36 is provided, the second screw 36 is connected to the housing 2 through the insulating sleeve 3. Specifically, the insulating sleeve 3 is provided at the other end of the housing 2, and part of the second screw 36 is provided in the insulating sleeve 3. In this way, the second screw 36 is matched with the housing 2 through the insulating sleeve 3. Among them, when the insulating sleeve 3 is fixed to the housing 2, it is also matched through the O-ring 6, the hexagonal bolt 11, the flat washer 12 and the spring washer 13, so as to improve its connection effect.

[0044] Furthermore, the present invention also provides a gas breakdown voltage detection device in an embodiment. Figure 2 As shown, Figure 2 The detection device provided in the embodiment of the utility model is combined with Figure 1 The detection device includes a high voltage power supply 118, an oscilloscope 418, a resistor-capacitor voltage divider 318, a detection model 218 and a gas charging and discharging recovery device 518.

[0045] Specifically, the high voltage end of the RC voltage divider 318 is connected to the high voltage power supply 118, the low voltage end of the RC voltage divider 318 is connected to the oscilloscope 418, the ground end of the RC voltage divider 318 is grounded, the detection model 218 is connected to the gas charging and discharging recovery device 518 through the gas pipe, and the two ends of the high voltage power supply 118 are connected to the two ends of the detection model 218;

[0046] The detection model 218 is set as the gas breakdown voltage detection model provided in the utility model. When the detection device is working, the relative distance between the two electrode assemblies can be adjusted by the distance adjustment knob 618, the first electrode assembly 34, which can be a positive electrode, the second electrode assembly 35, which can be a negative electrode, the first screw 30, and the second screw 36, etc., which are set on the upper part of the detection model.

[0047] Specifically, in this embodiment, the maximum output voltage of the detection device is ±1200kV, and the maximum output current is 50mA. When the regulating module is adjusting the distance, the adjustment accuracy of the gap distance is 0.02m. The gas charging, discharging and recovery device 518 is used for vacuuming the sealed gas chamber before the experiment, charging and discharging the mixed gas, and recovering the residual gas after the experiment, and the vacuum degree is 10Pa. Among them, the gas charging, discharging and recovery device 518 may include a compressor, a vacuum pump, a gas tank and other devices.

[0048] When the detection device of the utility model is working, the high voltage end of the RC voltage divider 318 is connected to the high voltage power supply, the low voltage end of the RC voltage divider 318 is connected to the oscilloscope 418, the ground end of the RC voltage divider 318 is grounded, the detection model 218 is connected to the gas charging and discharging recovery device 518, and the two ends of the high voltage power supply 118 are connected to the two ends of the detection model 218. The mixed gas breakdown voltage detection system mainly applies a linearly increasing voltage at both ends of the first electrode assembly and the second electrode assembly. When the gap breaks down, the voltage between the flat electrodes will jump. The SGB-150C RC voltage divider is used to measure the breakdown voltage of the mixed gas, and the high-low voltage transformation ratio is 1000:1. The measurement result is read through the oscilloscope 418.

[0049] In the embodiment of the utility model, the relative distance between the first electrode assembly and the second electrode assembly is adjusted, thereby improving the detection accuracy of the gas breakdown voltage value and improving the detection effect.

[0050] The above description is only a partial implementation method of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the present invention, other similar implementation methods based on the technical ideas of the present invention are also within the protection scope of the embodiments of the present invention.

Claims

1. A gas breakdown voltage detection model, characterized in that: include: The shell has a containing cavity for storing gas; a first screw, one end of which is connected to the housing, and the other end of which extends into the accommodating cavity; A first electrode assembly, disposed at the other end of the first screw; a second electrode assembly, opposite to the first electrode assembly, with a gap between the first electrode assembly and the second electrode assembly; and a second screw rod, wherein the second screw rod is insulated and disposed at the other end of the housing, one end of the second screw rod is disposed in the accommodating cavity, and the other end of the second screw rod extends to the outside of the housing; The second electrode assembly is disposed at one end of the second screw in the accommodating cavity, and an adjustment module is also disposed on the first screw, and the adjustment module is used to adjust the relative distance between the first electrode assembly and the second electrode assembly.

2. The gas breakdown voltage detection model according to claim 1, characterized in that: The inner diameter of the first screw is smaller than the inner diameter of the second screw.

3. The gas breakdown voltage detection model according to claim 1, characterized in that: The first electrode assembly includes any one of a plate electrode, a ball electrode, a rod electrode, and a needle electrode.

4. The gas breakdown voltage detection model according to claim 1, characterized in that: An area of ​​the first electrode assembly is smaller than or equal to an area of ​​the second electrode assembly.

5. The gas breakdown voltage detection model according to claim 4, characterized in that: The gap distance between the first electrode assembly and the second electrode assembly is set to 8 mm to 12 mm.

6. The gas breakdown voltage detection model according to claim 1, characterized in that: The gas breakdown voltage detection model also includes a gas density relay, which is arranged on one side of the shell and communicated with the accommodating cavity. The gas density relay is used to detect the gas in the accommodating cavity.

7. The gas breakdown voltage detection model according to claim 6, characterized in that: The gas density relay comprises a calibration valve, and the calibration valve is connected to the housing via a connecting bolt.

8. The gas breakdown voltage detection model according to claim 1, characterized in that: The gas breakdown voltage detection model further includes an insulating sleeve, which is disposed at the other end of the shell, and a portion of the second screw is disposed in the insulating sleeve.

9. The gas breakdown voltage detection model according to claim 1, characterized in that: The first screw rod comprises a first sub-rod and a second sub-rod, and the adjustment module is configured as a double-ended internally threaded tube; The first sub-rod is connected to the second sub-rod through the double-headed internally threaded tube, and the first sub-rod is arranged on a side close to the second electrode assembly, and the first electrode assembly is arranged at an end of the second sub-rod.

10. A gas breakdown voltage detection device, characterized in that: The invention comprises a gas breakdown voltage detection model as claimed in any one of claims 1 to 9.

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