CN220418420U - Three station switch moving contact position state monitoring devices - Google Patents
Three station switch moving contact position state monitoring devices Download PDFInfo
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- CN220418420U CN220418420U CN202320907615.7U CN202320907615U CN220418420U CN 220418420 U CN220418420 U CN 220418420U CN 202320907615 U CN202320907615 U CN 202320907615U CN 220418420 U CN220418420 U CN 220418420U
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- station switch
- main shaft
- moving contact
- inclinometer
- air chamber
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 10
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model provides a three station switch moving contact position state monitoring devices, is including the three station switch main shaft that is located the air chamber, with the coaxial rotatory three station switch moving contact of three station switch main shaft, main generating line static contact and ground connection static contact drive the rotatory rotating electrical machines of three station switch main shaft, its technical essential is: a gear disc which rotates coaxially with the three-station switch main shaft is fixedly arranged on the three-station switch main shaft, an inclinometer fixing plate is fixedly arranged on the gear disc, and a dynamic inclinometer is arranged on the inclinometer fixing plate; a digital display screen is arranged on an instrument door outside the air chamber; and the output end of the dynamic inclinometer is connected with a digital display screen. The utility model can monitor the position of the three-position switch moving contact at any time outside the air chamber, can rapidly process faults under the condition of not opening the air chamber, can greatly shorten the fault processing time and reduce the fault processing cost; the problems of gas resource waste and long operation time caused by detection after the air chamber is opened are avoided.
Description
Technical Field
The utility model belongs to the technical field of high-voltage switch cabinets, and particularly relates to a three-station switch moving contact position state monitoring device.
Background
The three-position switch of the gas-insulated closed switch cabinet drives the three-position switch main shaft to rotate through the transmission parts such as a rotating motor driving gear, a cam, a transmission chain and the like of the operating mechanism box, and the three-position switch main shaft drives the three-position switch moving contact to rotate to realize the switching of three position states of the three-position switch moving contact, namely, the three-position switch main shaft is connected with a main bus fixed contact (isolated position), the three-position switch main shaft is connected with a grounding fixed contact (grounded position), and the three-position switch moving contact is isolated (isolated position and grounded position). The position state of the three-station switch moving contact is provided by an auxiliary switch, the rotating motor stops being sent out by a travel switch in the operating mechanism box in place, the two switches are both positioned in the operating mechanism box, and the operating mechanism box is connected with the three-station switch main shaft through a transmission chain, so that the position state of the three-station switch moving contact cannot be accurately displayed, meanwhile, if the transmission chain is broken, the auxiliary switch loses interlocking on the three-station main shaft, the position of the auxiliary switch is inconsistent with the position of the three-station switch moving contact, and a transmitted position signal is distorted. Because the three-station switch moving contact is positioned in the air chamber, the position state of the moving contact cannot be observed from the outside, the lap joint condition and the meshing depth of the moving contact and the fixed contact cannot be observed, once a transmission chain and an operating mechanism are in fault, the fault can be treated by opening the closed air chamber, the air chamber is opened, sulfur hexafluoride gas is required to be recovered, air pollution is possibly caused, the air chamber is required to be vacuumized again and filled with sulfur hexafluoride gas after a fault element is replaced, the time is long (the vacuumizing operation time is more than 40 minutes), a large number of equipment (a gas recovery device, a vacuum pump and the like) and tools are required, and the method is unfavorable for rapidly treating the fault. Therefore, improvement on monitoring of the position state of the movable contact of the three-position switch is urgently needed.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide a three-position switch moving contact position state monitoring device which can monitor the position of a three-position switch moving contact at any time outside an air chamber, solves the problem that an auxiliary switch cannot display the accurate position of the three-position switch moving contact in the prior art, even the auxiliary switch position is inconsistent with the position of the three-position switch moving contact after a transmission chain is broken, and avoids the problems of gas resource waste and long operation time consumption caused by detecting the position of the three-position switch moving contact after the air chamber is opened.
The utility model is realized by the following technical scheme: the utility model provides a three station switch moving contact position state monitoring devices, is including the three station switch main shaft that is located the air chamber, with the coaxial rotatory three station switch moving contact of three station switch main shaft, main generating line static contact and ground connection static contact drive the rotatory rotating electrical machines of three station switch main shaft, its technical essential is: a gear disc which rotates coaxially with the three-station switch main shaft is fixedly arranged on the three-station switch main shaft, an inclinometer fixing plate is fixedly arranged on the gear disc, and a dynamic inclinometer is arranged on the inclinometer fixing plate; a digital display screen is arranged on an instrument door outside the air chamber; and the output end of the dynamic inclinometer is connected with a digital display screen.
Further, the gear plate is arranged outside the air chamber.
Further, the dynamic inclinometer is fixedly connected with the inclinometer fixing plate through screws.
The utility model has the beneficial effects and characteristics that:
according to the utility model, the dynamic inclinometer is arranged on the gear disc of the three-station switch main shaft, and whether the position of the three-station switch moving contact reaches three positions of a main bus fixed contact (isolation position), a grounding fixed contact (grounding position), an isolation state (isolation position and grounding position) or not is judged according to the measured rotation angle value of the three-station switch moving contact of the dynamic inclinometer. If the angle of the movable contact of the three-station switch does not reach the designated position or the angle range is inconsistent with the state reflected by the auxiliary switch, operators can terminate power transmission, report for maintenance, and accidents can be effectively avoided. In addition, the three-station angle value can be transmitted by a background protection device, so that necessary accurate data is provided for protection logic.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present utility model;
FIG. 2 is a schematic view of a part of the structure of the present utility model;
FIG. 3 is a schematic diagram of the isolation state of a three-position switch according to the present utility model;
FIG. 4 is a schematic diagram of a three-position switch connected to a bus bar according to the present utility model;
fig. 5 is a schematic diagram of a three-position switch in the present utility model in a grounded state.
In the figure, the main part number is described: 1. three-station switch moving contact; 2. a three-station switch main shaft; 3. a gear plate; 4. a inclinometer fixing plate; 5. a dynamic inclinometer; 6. a main bus fixed contact; 7. a grounding static contact; 8. a drive chain; 9. a three-station auxiliary switch; 10. an operating mechanism box; 11. an air chamber.
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Detailed Description
The following describes the utility model in detail by way of specific examples in connection with fig. 1-5.
Examples
The three-station switch moving contact position state monitoring device comprises a three-station switch main shaft 2 positioned in an air chamber 11, a three-station switch moving contact 1 coaxially rotating with the three-station switch main shaft, a main bus fixed contact 6 and a grounding fixed contact 7, and a rotating motor for driving the three-station switch main shaft to rotate, wherein: a gear disc 3 which rotates coaxially with the three-station switch main shaft is fixedly arranged on the three-station switch main shaft, an inclinometer fixing plate 4 is fixedly arranged on the gear disc, a dynamic inclinometer 5 is arranged on the inclinometer fixing plate, and a high-precision inclination sensor with the model of the remifen brand being SCA126T-90-485-MB is selected as the dynamic inclinometer; a digital display screen is arranged on an instrument door outside the air chamber; the output end of the dynamic inclinometer is connected with a digital display screen, namely an R485 communication line of the dynamic inclinometer is connected with the digital display screen, and the digital display screen is connected with the digital display screen and used for displaying the inclination angle of the dynamic inclinometer. In order to avoid the dynamic inclinometer occupying the inner space of the air chamber and facilitate the replacement of the dynamic inclinometer, the gear disc is arranged outside the air chamber. Preferably, the dynamic inclinometer is fixed with the inclinometer fixing plate through screw connection.
The principle of the utility model is as follows:
as shown in fig. 3, the isolation state (isolation positioning and grounding positioning) of the moving contact of the three-position switch is shown, the inclination angle of the dynamic inclinometer is a positive value, and the angle fixed value of the inclination angle a is: and +20+/-2 degrees, namely, judging that the isolation state of the three-station switch movable contact is achieved when the inclination angle of the dynamic inclinometer is a positive value and the inclination angle fixed value is 18-22 degrees.
As shown in fig. 4, the connection state (isolation position) of the movable contact of the three-position switch and the fixed contact of the main bus is shown, the inclination angle of the dynamic inclinometer is a negative value, and the fixed value of the inclination angle b is: and 30 degrees+/-2 degrees, namely, judging that the three-station switch moving contact is connected with the main bus fixed contact when the inclination angle of the dynamic inclinometer is a negative value and the inclination angle fixed value is 28-32 degrees.
As shown in fig. 5, the connection state (grounding joint position) of the movable contact and the grounding fixed contact of the three-position switch, the inclination angle of the dynamic inclinometer is a positive value, and the angle fixed value of the inclination angle c is as follows: and +70+/-2 degrees, namely, judging that the three-station switch moving contact is connected with the grounding fixed contact when the inclination angle of the dynamic inclinometer is a positive value and the inclination angle fixed value is 68-72 degrees.
The dynamic inclinometer is arranged on the three-station switch main shaft, when the three-station switch moving contact acts, the rotating motor of the operating mechanism box 10 drives the transmission chain 8, the simulation bus and the three-station auxiliary switch 9 to rotate, and the transmission chain drives the three-station main shaft to rotate through the gear disc, so that the three-station switch moving contact rotates, and the three-station switch moving contact and the main bus fixed contact are converted into a connection state (isolation position), an isolation state (isolation position and grounding position) of the three-station switch moving contact, and a connection state (grounding position) of the three-station switch moving contact and the grounding fixed contact. The position states of the three-station switch can be indicated by the analog bus and the three-station auxiliary switch, but the analog bus and the three-station auxiliary switch are both arranged on the operating mechanism box, the analog bus and the three-station auxiliary switch are linked with the three-station main shaft through components such as a railing, a three-station mechanism main shaft, a transmission chain, a gear and the like, and once one of the components is damaged, the indication of the analog bus and the three-station auxiliary switch is inconsistent with the actual position of the three-station switch, so that potential safety hazards exist. The dynamic inclinometer is arranged on a gear disc coaxially driven with the main shaft of the three-station switch, rotates along with the main shaft of the three-station switch, measures inclination angles of different positions, can accurately indicate the position states of moving contacts of the three-station switch, transmits the measured inclination angles to a digital display screen through an R485 communication line, and an operator can compare an angle value with an analog bus and an electric position signal (the position of the three-station auxiliary switch) and check whether the angle value is in a fixed value range or not to judge whether the three-station switch is switched in place or not. If abnormality is found, the correction can be maintained in time, and accidents are avoided.
According to the utility model, the actual position condition of the three-position switch moving contact can be judged by comparing the accurate angle measurement value with the rated value, the angle value of the three-position switch main shaft is adjusted outside the air chamber to be matched with the rated value, so that the fault can be rapidly processed without opening the air chamber, the fault processing time can be greatly shortened, and the fault processing cost can be reduced.
Claims (3)
1. The utility model provides a three station switch moving contact position state monitoring devices, includes the three station switch main shaft that is located the air chamber, with the coaxial rotatory three station switch moving contact of three station switch main shaft, main generating line static contact and ground connection static contact drive the rotatory rotating electrical machines of three station switch main shaft, its characterized in that: a gear disc which rotates coaxially with the three-station switch main shaft is fixedly arranged on the three-station switch main shaft, an inclinometer fixing plate is fixedly arranged on the gear disc, and a dynamic inclinometer is arranged on the inclinometer fixing plate; a digital display screen is arranged on an instrument door outside the air chamber; and the output end of the dynamic inclinometer is connected with a digital display screen.
2. The three-position switch moving contact position state monitoring device according to claim 1, wherein: the gear disc is arranged outside the air chamber.
3. The three-position switch moving contact position state monitoring device according to claim 1, wherein: the dynamic inclinometer is fixedly connected with the inclinometer fixing plate through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320907615.7U CN220418420U (en) | 2023-04-21 | 2023-04-21 | Three station switch moving contact position state monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320907615.7U CN220418420U (en) | 2023-04-21 | 2023-04-21 | Three station switch moving contact position state monitoring devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418420U true CN220418420U (en) | 2024-01-30 |
Family
ID=89648854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320907615.7U Active CN220418420U (en) | 2023-04-21 | 2023-04-21 | Three station switch moving contact position state monitoring devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418420U (en) |
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2023
- 2023-04-21 CN CN202320907615.7U patent/CN220418420U/en active Active
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