CN212111493U - System for testing gas box - Google Patents
System for testing gas box Download PDFInfo
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- CN212111493U CN212111493U CN202020178533.XU CN202020178533U CN212111493U CN 212111493 U CN212111493 U CN 212111493U CN 202020178533 U CN202020178533 U CN 202020178533U CN 212111493 U CN212111493 U CN 212111493U
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- conductive moving
- conductive
- moving part
- power supply
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Abstract
The utility model relates to a system for be used for testing gas tank, gas tank has at least one sleeve pipe, and the system includes a contact device, and this contact device includes: a fixed mount; a conductive moving part corresponding to one of the sleeves, the conductive moving part being capable of protruding from the fixed frame and being in contact with or separated from a high-voltage power supply device; one end of the cable is electrically connected with one conductive moving part, and the other end of the cable is electrically connected with one sleeve; a control portion for controlling movement of the conductive moving portion.
Description
Technical Field
The utility model relates to a cubical switchboard field, especially a system for testing gas tank.
Background
Switchgear is generally divided into two types of Insulated equipment, one being an Air Insulated Switchgear (AIS) and the other being a Gas Insulated Switchgear (GIS). Although the air-insulated switchgear is low in cost, the air-insulated switchgear needs a longer insulation distance due to the adoption of air as an insulation medium, so that the occupied area of the air-insulated switchgear is larger. Moreover, since the components in the equipment are mostly exposed in the air, the equipment is easily affected by the climatic environment conditions, which is not favorable for the safe and reliable operation of the system. The gas insulated switchgear, however, uses a gas such as sulfur hexafluoride as an insulating medium, and has a small required insulation distance and thus a small footprint. The components are sealed in a gas box filled with gas, so that the capacity of resisting the influence of the external environment is strong, and the components are widely used in a power system at present.
The gas tank is a core component of the gas insulated switchgear. In order to ensure the performance of the gas insulated switchgear, before leaving the factory, the withstand voltage degree of the gas tank needs to be tested or the partial discharge test needs to be performed on the gas tank, specifically, each phase of the gas tank is tested, and both the tests need to use high voltage electricity. For example, in testing, a bushing on a gas box is connected to a high voltage power supply for testing.
In the prior art, a bushing is required to connect a cable connected to a high voltage power supply to one phase of the gas box. If the next phase needs to be tested, the cable needs to be removed from the sleeve and connected to the sleeve of the next phase, while ensuring the safety of the operator. Such a test mode is time-consuming and labor-consuming, and the safety of the operator cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention proposes a system for testing a gas box having at least one bushing, characterized in that it comprises a contact device comprising:
a fixed mount;
a conductive moving part corresponding to one of the sleeves, the conductive moving part being capable of protruding from the fixed frame and being in contact with or separated from a high-voltage power supply device;
one end of the cable is electrically connected with one conductive moving part, and the other end of the cable is electrically connected with one sleeve;
a control portion for controlling movement of the conductive moving portion.
Through this a system for testing gas tank, operating personnel can come the removal of control electrically conductive removal portion through the control part, and then realizes that the sleeve pipe on a certain looks of this gas tank applys the high pressure or removes the high pressure, and need not operating personnel manual connection, and not only convenient and fast has avoided the potential safety hazard of operating personnel when manual operation moreover, has guaranteed operating personnel's personal safety.
According to the system, optionally, the air box has three sleeves, the system comprises three conductive moving parts and three cables, the conductive moving parts are electrically connected with the cables in a one-to-one correspondence manner, and the cables are electrically connected with the sleeves in a one-to-one correspondence manner.
According to the system, optionally, the fixing frame comprises a guide rail, and the conductive moving part can move along the guide rail towards the high-voltage power supply equipment or move away from the high-voltage power supply equipment. The mode is not only simple to realize, but also can ensure the reliable contact of the conductive moving part and the high-voltage power supply equipment.
According to the system as described above, optionally, the fixing frame is grounded, and the cable is electrically connected to the fixing frame and electrically connected to the conductive moving part through the fixing frame.
According to the system as described above, optionally, the fixing frame further comprises: the grounding frame is grounded, one end of the guide rail, facing the high-voltage equipment, is fixed on the grounding frame, and the conductive moving part is arranged on the grounding frame in a penetrating mode. The grounding is realized through the grounding frame, and the method is simple and reliable.
According to the system as described above, optionally, the contact device further comprises: an insulating housing for shielding the junction of the cable and the sleeve. This can avoid the tip discharge from affecting the test results. The insulating housing is, for example, a housing made of rubber or plastic.
According to the system as described above, optionally, the conductive moving part comprises:
a conductive rod;
and the insulating sleeve is sleeved on the conducting rod.
The system according to the above, optionally, further comprising at least one of the following devices:
a uniform cover located below a contact position of the high voltage power supply equipment and the conductive moving part;
and the dehumidifying equipment is used for dehumidifying the contact position of the high-voltage power supply equipment and the conductive moving part.
The system according to the above, optionally, further comprising:
the interlocking device is used for interlocking the contact equipment and the partial discharge testing device, so that when the partial discharge testing device works, the contact equipment is locked, and the partial discharge testing device is used for performing partial discharge testing on the sleeve.
The system according to the above, optionally, further comprises the high voltage power supply apparatus.
Drawings
The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings, in which:
fig. 1 is a schematic top view of a portion of a system for testing a gas box according to an embodiment of the present invention.
Fig. 2 is a perspective view of a portion of a system for testing a gas box according to an embodiment of the present invention.
Fig. 3 is an overall schematic diagram of a system for testing a gas cabinet according to an embodiment of the present invention.
Fig. 4 is a schematic view of a cable and sleeve connection for a system for testing a gas box according to an embodiment of the present invention.
Reference numerals:
11-fixed mount
111-guide rail
112-grounded frame
12-conductive moving part
121-conductive rod
122-insulating sleeve
13-cable
20-gas tank
21-sleeve
30-high voltage power supply equipment
301-high voltage contact
40-Room
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail by referring to the following embodiments.
The utility model provides a system for be used for testing gas tank for 20 test procedures of gas tank provide the high pressure, put testing arrangement at withstand voltage test or office for example and provide the high pressure. The gas box 20 has at least one sleeve 21. Typically, the gas box 20 has three phases and therefore three bushings 21. The following description will be given by way of example of the case 20 having three sleeves 21.
Fig. 1 is a schematic diagram of a portion of a system for testing a gas cabinet according to an embodiment of the present invention.
Wherein the system for testing a gas box comprises a contact device comprising a holder 11, a conductive moving part 12 corresponding to a bushing 21, a cable 13 corresponding to a bushing 21 and a control part. Here, the correspondence with the sleeves 21 indicates how many sleeves 21, and correspondingly, how many conductive moving parts 12 and cables 13 correspond to the sleeves 21 one by one.
The holder 11 can be made of metal, so that the holder 11 itself can be used as a conductor for the electrically conductive connection.
The conductive moving part 12 can protrude from the fixed frame 11 and be in contact with or separated from a high voltage power supply apparatus 30. As can be seen from fig. 1, 2 and 3, the conductive moving part 12 can move toward the high voltage power supply apparatus 30 or move away from the high voltage power supply apparatus 30. When the conductive moving part 12 contacts the high voltage power supply device 30, it is conductively connected to the high voltage power supply device 30, and further, high voltage can be transmitted to the air box 20 through the cable 13, so that the air box 20 can be tested. Optionally, the conductive moving part 12 includes a conductive rod 121 and an insulating sleeve 122, wherein the insulating sleeve 122 is sleeved on the conductive rod 121, and the insulating sleeve 122 is to prevent electric discharge between the conductive rod 121 and other devices.
One end of the cable 13 is electrically connected to one of the conductive moving portions 12, and the other end of the cable 13 is used for electrical connection to one of the sleeves 21. The electrical connection here means that the cable 13 and the conductive moving portion 12 are directly connected or indirectly connected through another conductor as long as they can conduct electricity with each other. For example, when the holder 11 is used as a conductor, the cable 13 may be connected to the holder 11, and the conductive moving portion 12 may be connected to the holder 11, so that the cable 13 and the holder 11 can be electrically connected to each other. The cable 13 is used for transmitting high pressure to the casing 21 of the gas box 20, the cable 13 being, for example, an electric cable. Optionally, an insulating casing (not shown) may be disposed at the end of the cable 13 connected to the sleeve 21, and the insulating casing is used to shield the connection between the cable 13 and the sleeve 21, so as to prevent the electric discharge from affecting the test result. The insulating housing is, for example, a housing made of rubber or plastic.
The control part is used for controlling the movement of the conductive moving part 12 to drive the conductive moving part 12 to move towards the high voltage power supply equipment 30 or move away from the high voltage power supply equipment 30. The control portion may receive an instruction sent by an operator to control a certain conductive moving portion 12 to be extended to contact with the high voltage power supply apparatus 30 or to be retracted to be separated from the high voltage power supply apparatus 30. Alternatively, the control part may be programmed such that it ensures that only one conductive moving part 12 can contact the high voltage supply device 30 at a time.
The movement of the conductive moving part 12 can be realized in various ways, for example, the fixing frame 11 includes a guide rail 111, and the conductive moving part 12 can move along the guide rail 111 towards the high voltage power supply device 30 or move away from the high voltage power supply device 30, which not only is simple to realize, but also can ensure the reliable contact between the conductive moving part 12 and the high voltage power supply device 30. Of course, the conductive moving part 12 may be located in a containing cylinder, and the conductive moving part 12 is moved by pushing the end of the conductive moving part 12, which will not be described in detail.
Through this a system for testing gas tank, operating personnel can control the removal of electrically conductive removal portion 12 through the control part, and then realizes that sleeve pipe 21 on this gas tank 20 certain looks applys the high pressure or removes the high pressure, and need not operating personnel manual connection, not only convenient and fast has avoided the potential safety hazard of operating personnel when manual operation moreover, has guaranteed operating personnel's personal safety.
Alternatively, the fixing frame 11 is grounded, and the cable 13 is electrically connected to the fixing frame 11 and electrically connected to the conductive moving portion 12 through the fixing frame 11. Thus, the cable 13 can be grounded through the fixed frame 11, and when the conductive moving part 12 is far away from the high-voltage power supply equipment 30, the sleeve 21 on the phase on the air box 20 is grounded, so that the test condition is met. Specifically, the fixing frame 11 further includes a grounding frame 112, the grounding frame 112 is grounded, one end of the guide rail 111 facing the high-voltage device is fixed to the grounding frame 112, and the conductive moving portion 12 is disposed through the grounding frame 112. The grounding is realized by the grounding frame 112, and the grounding is simple and reliable. The grounding frame 112 is, for example, a copper bar having a through hole, and the conductive rod 121 of the conductive moving portion 12 can be inserted into the through hole to contact with the high voltage power supply apparatus 30. As shown in fig. 1, 2 and 3, the grounding frame 112 may span three conductive moving parts 12, the three conductive moving parts 12 are sequentially arranged and penetrate through the grounding frame 112, when the conductive moving part 12 of a certain phase is in contact with the high voltage power supply device 30, a test can be performed through the bushing 21 of the phase, and the bushings 21 of other two phases are grounded. The grounding frame 112 can also stop the moving distance of the conductive moving part 12 to ensure the reliability of the whole system.
The operation of the system for testing gas boxes is specifically exemplified below. There are three sleeves 21 on the air box 20, three conductive moving parts 12, and three cables 13. First, each cable 13 is connected to the sleeve 21 with the safety of the operator ensured. As shown in fig. 2 and 4, both ends of the left cable 13 are connected to the left bushing 21 and the left conductive moving part 12, respectively, both ends of the middle cable 13 are connected to the middle bushing 21 and the middle conductive moving part 12, respectively, and both ends of the right cable 13 are connected to the right bushing 21 and the right conductive moving part 12, respectively. The operator can then control the controller in a room 40 remote from the high voltage area.
As shown in fig. 1, the left conductive moving part 12 is shown in contact with the high-voltage power supply device 30, and at this time, a withstand voltage test or a partial discharge test can be performed for the phase through the left bushing 21. The high-voltage power supply apparatus 30 is not shown in fig. 1, and specifically, a state in which the left conductive moving part 12 moves toward the high-voltage power supply apparatus 30 to contact the high-voltage power supply apparatus 30 is shown. The other two conductive moving parts 12 do not contact the high voltage power supply apparatus 30 and are grounded through the grounding frame 112. When a withstand voltage test or a partial discharge test needs to be performed on the phase corresponding to the middle bushing 21, the control unit separates the left conductive moving part 12 from the high-voltage power supply device 30, and moves the middle conductive moving part 12 to contact the high-voltage power supply device 30, so as to supply power to the middle bushing 21.
Optionally, the system for testing a gas box of the present invention further comprises at least one of the following devices: a homogenizing hood (not shown), a dehumidifying device (not shown). Wherein, the uniform cover is positioned below the contact position of the high voltage power supply equipment 30 and the conductive moving part 12, and can uniform the electric field of the high voltage power supply equipment 30 so as to obtain more accurate test results. The dehumidifying apparatus is used for dehumidifying a contact position of the high voltage power supplying apparatus 30 and the conductive moving part 12. The dehumidifying apparatus may be disposed at a position closer to the high voltage power supplying apparatus 30. Assuming the system is in a building, the dehumidification apparatus may be placed on a wall of the building. The dehumidification apparatus may be any one of the dehumidification apparatuses in the related art.
Optionally, the system for testing a gas box of the present invention further comprises an interlock (not shown). The interlocking device is used for interlocking the contact equipment and the partial discharge testing device, so that when the partial discharge testing device works, the contact equipment is locked, and the partial discharge testing device is used for performing partial discharge testing on the sleeve 21. The contact device is locked, which means that the contact device cannot be operated, for example, the conductive moving part 12 cannot move, thereby avoiding the generation of electric arc and ensuring the accuracy of the partial discharge test.
Optionally, the present invention provides a system for testing gas tanks, a high voltage power supply apparatus 30 as described above. The high voltage power supply apparatus 30 may include one high voltage contact portion 301 to correspond to one conductive moving portion 12, respectively. That is, the conductive rod 121 is brought into contact with the high voltage contact portion 301, and then a high voltage is applied. As shown in fig. 2, the high-voltage contact portion 301 is, for example, a conductive plate.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. System for testing a gas box (20), said gas box (20) having at least one bushing (21), characterized in that it comprises a contact device comprising:
a holder (11);
a conductive moving part (12) corresponding to one of the bushings (21), the conductive moving part (12) being capable of protruding from the fixed frame (11) and being in contact with or separated from a high-voltage power supply apparatus (30);
a cable (13) corresponding to one of the sleeves (21), one end of the cable (13) being electrically connected to one of the conductive moving portions (12), the other end of the cable (13) being adapted to be electrically connected to one of the sleeves (21);
a control section for controlling the movement of the conductive moving section (12).
2. The system according to claim 1, characterized in that said gas box (20) has three bushings (21), said system comprising three said conductive moving parts (12) and three said cables (13), said conductive moving parts (12) being electrically connected to said cables (13) in a one-to-one correspondence, said cables (13) being electrically connected to said bushings (21) in a one-to-one correspondence.
3. The system according to claim 1, characterized in that the holder (11) comprises a guide rail (111), and the conductive moving part (12) is movable along the guide rail (111) in a direction towards the high voltage supply device (30) or in a direction away from the high voltage supply device (30).
4. System according to claim 3, characterized in that said fixed frame (11) is grounded and said cable (13) is electrically connected to said fixed frame (11) and to said conductive mobile part (12) through said fixed frame (11).
5. The system according to claim 4, wherein the holder (11) further comprises:
the grounding frame (112) is grounded, one end, facing the high-voltage power supply equipment (30), of the guide rail (111) is fixed to the grounding frame (112), and the conductive moving part (12) penetrates through the grounding frame (112).
6. The system of claim 1, wherein the contact device further comprises:
an insulating housing for shielding the connection of the cable (13) to the sleeve (21).
7. The system according to claim 1, characterized in that said conductive mobile part (12) comprises:
a conductive rod (121);
an insulating sleeve (122), the insulating sleeve (122) is sleeved on the conducting rod (121).
8. The system of claim 1, further comprising at least one of the following devices:
a uniform cover located below a contact position of the high voltage power supply equipment (30) and the conductive moving part (12);
a dehumidifying device for dehumidifying the contact position of the high voltage power supply device (30) and the conductive moving part (12).
9. The system of claim 1, further comprising:
the interlocking device is used for interlocking the contact equipment and the partial discharge testing device, so that when the partial discharge testing device works, the contact equipment is locked, and the partial discharge testing device is used for performing partial discharge testing on the sleeve (21).
10. A system according to any of claims 1-9, further comprising said high voltage power supply apparatus (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020178533.XU CN212111493U (en) | 2020-02-17 | 2020-02-17 | System for testing gas box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020178533.XU CN212111493U (en) | 2020-02-17 | 2020-02-17 | System for testing gas box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212111493U true CN212111493U (en) | 2020-12-08 |
Family
ID=73633352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020178533.XU Active CN212111493U (en) | 2020-02-17 | 2020-02-17 | System for testing gas box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212111493U (en) |
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2020
- 2020-02-17 CN CN202020178533.XU patent/CN212111493U/en active Active
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