CN205103375U - Online calibrating device of high -voltage switch density relay - Google Patents
Online calibrating device of high -voltage switch density relay Download PDFInfo
- Publication number
- CN205103375U CN205103375U CN201520673214.5U CN201520673214U CN205103375U CN 205103375 U CN205103375 U CN 205103375U CN 201520673214 U CN201520673214 U CN 201520673214U CN 205103375 U CN205103375 U CN 205103375U
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- Prior art keywords
- density monitor
- connecting interface
- switch gear
- interface
- voltage switch
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Abstract
The utility model discloses an online calibrating device of high -voltage switch density relay, including the connection valves of density relay with two three -way valves of adoption, the three interface of two three -way valves is connected interface, this body coupling of high tension switchgear interface and check valve for the density relay respectively and is inserted the connection interface soon, interface connection density relay is connected to the density relay, this body coupling of high tension switchgear interface be used for with the high tension switchgear body on the tonifying qi that sets up detect interface connection, the check valve is inserted soon to connect and is provided with check valve quick connector in the interface, check valve quick connector is used for being connected with standard gas output device and switches on. The utility model discloses not only can reduce the complexity who has density relay maintenance work now, can realize sulfur hexafluoride gas density relay's online calibration operation moreover, reduce plant maintenance work load, improve equipment maintenance efficiency.
Description
Technical field
The utility model relates to high-voltage switch gear density monitor field, particularly relates to a kind of high-voltage switch gear density monitor on-line calibration device.
Background technology
At present, in electric system, SF
6gas is widely used in various high voltage electric equipment with the insulating property of its excellence and arc extinction performance.In high pressure (126 ~ 252KV), UHV (ultra-high voltage) (363 ~ 800KV), extra-high voltage (1100KV) field, with SF
6gas is that the high-tension switch gear of insulating medium accounts for absolute leading position.The reliable and stable operation of safety and economic operation to whole intelligent grid power transformation link of these high-tension switch gears is significant.
At SF
6in high-tension switch gear, the key factor played a decisive role to its electrical strength, arc extinction performance is SF
6gas density, and reflect SF
6the main element of gas density is SF
6gas density relay.Therefore, the quality of density monitor performance directly affects SF
6the safe operation of high-tension switch gear.SF
6gas density relay in use for some time, because its warning and locking value can produce certain drift, therefore needs the SF put into operation to scene
6gas density relay carries out periodic calibration/verification.And the connection mode of density monitor and high-tension switch gear body directly affects degree of difficulty and the fussy degree of its calibration/verification work.
Present stage, in transformer station at home, density monitor and high-tension switch gear body adopt two kinds of connection modes mostly:
Mode one: density monitor is directly installed on tonifying Qi reserved on SF 6 high-voltage switchgear body, detects interface;
Mode two: density monitor is arranged on tonifying Qi reserved on SF 6 high-voltage switchgear body by a hand valve, is detected interface.
In the first mounting means, because density monitor is connected directly between on high-tension switch gear body, the calibration/maintenance of density monitor can only utilize the inflation of high-tension switch gear, deflation course carries out, and there is following defect:
(1) temperature impact is comparatively large, is difficult to ensure accuracy;
(2) SF
6density monitor is applied to pressure reduction, and verifies with gas replenishment process, does not meet, also affect the accuracy of calibration with practical situations.
And when utilizing the deflation course of high-tension switch gear to calibrate density monitor, except above-mentioned defect, also existing will to SF when exitting
6gas carries out the shortcoming reclaimed, and needs special SF
6, also there is the problem that calibration accuracy not easily ensures in gas concentration unit, not only complex operation simultaneously.
In the second mounting means, when calibrating density monitor/keeping in repair, need first to close hand valve, the tonifying Qi now on high-voltage switch gear body, detection interface are closed by hand valve, and the gas circuit of density monitor and high-voltage switch gear body is disconnected; Again density monitor is unloaded down from hand valve, density monitor is delivered to laboratory and carry out verifying/keeping in repair.
The second mounting means is relative to the first mounting means, density monitor is calibrated/keeps in repair more simple and convenient, the first mounting means can only carry out density monitor calibration/maintenance before equipment is installed or in inflation deflation course, and the second mounting means is not then by time restriction.
Although utilize hand valve to realize density monitor to lead to and have lot of advantages with the connection of SF 6 high-voltage switchgear body, apply extensive in the electricity substation of China, most of transformer station still adopts the first installation method.And the second density monitor only can deliver to laboratory verification or maintenance after density monitor unloads, and line verification can not be embodied directly in.
In a transformer station, the quantity of density monitor is fixed with the air chamber quantity of SF 6 high-voltage switch, at least tens, and hundreds of is even thousands of at most.If laboratory method of calibration present stage can carried out, replaces the on-line testing of density monitor, will reduce maintenance workload greatly, improve the maintenance efficiency of equipment.
Utility model content
The purpose of this utility model is to provide a kind of high-voltage switch gear density monitor on-line calibration device, the complexity of existing density monitor maintenance job can not only be reduced, and the on-line calibration work of sulfur hexafluoride gas density relay can be realized, reduce plant maintenance workload, improve plant maintenance efficiency.
The utility model adopts following technical proposals:
A kind of high-voltage switch gear density monitor on-line calibration device, comprise density monitor and be connected valve, described connection valve is two-position three-way valve, and three interfaces of two-position three-way valve are respectively density monitor connecting interface, high-tension switch gear body connecting interface and retaining valve and insert connecting interface soon; Described density monitor connecting interface Connection Density relay, the detection gas input port of density monitor and the conducting of density monitor connecting interface, described high-tension switch gear body connecting interface is connected for detecting interface with the tonifying Qi that high-tension switch gear body is arranged, described retaining valve is inserted in connecting interface soon and is provided with retaining valve quick connector, and retaining valve quick connector is used for being connected conducting with calibrating gas output unit.
Described density monitor connecting interface end is arranged with traveling nut, and the detection gas input port of density monitor is threaded with density monitor connecting interface by traveling nut.
Packing ring is provided with between described density monitor connecting interface and the detection gas input port of density monitor.
Described high-tension switch gear body connecting interface end is provided with external thread.
Described retaining valve quick connector comprises the quick connector body being provided with inner chamber, quick connector body lower end is provided with inserts the external thread that matches of connecting interface inside surface internal thread soon with retaining valve, inner chamber and retaining valve insert connecting interface conducting soon, inner chamber middle and lower part is provided with spring, spring bottom end is fixed on intracavity inner surface, the top of spring is fixed with sealing frame, sealing frame moves upward along inner chamber under Spring driving, sealing frame comprises circular top plate and is arranged on the plug in circular top plate, inner chamber top is provided with draft tube, bore seal is provided with in inner chamber below draft tube, bore seal and sealing frame mating shapes.
Be arranged with O-ring seals outside described plug, O-ring seals is between circular top plate and bore seal.
Circumferentially be provided with position limiting convex ring in the middle part of described draft tube, with in corresponding position, position limiting convex ring position, cavity wall offer annular spacing groove.
Described draft tube lower end is provided with anti-back pieces.
The utility model tool has the following advantages:
The tonifying Qi that the utility model can realize reserving with high-tension switch gear body detects interface direct and connects in succession, and by connecting the knob that valve is arranged, realize the disconnection of gas circuit between density monitor and high-voltage switch gear body, thus density monitor is dismantled, complete maintenance or laboratory investment work.The utility model can also by connecting the knob that valve is arranged, retaining valve is utilized to insert in connecting interface soon and the inner retaining valve quick connector arranged, utilize calibrating gas output unit to inject calibrating gas in high-tension switch gear body, realize the on-line calibration work to density monitor.
The utility model can to verify quickly and easily density monitor under the state not dismantling density monitor, change or the operation such as maintenance, realizes not having a power failure verification.The utility model also thoroughly can avoid the damage phenomenon of sealing surface and the O-ring seal damage caused because of dismounting.
The utility model can not only carry out on-line calibration to gas analysis instruments such as the density monitors be arranged on high-tension switch gear body, also can carry out on-line calibration or maintenance to gas analysis instruments such as the humidity be arranged on high-tension switch gear body in the same way.
The utility model significantly reduces the maintenance workload of instrument, improves the maintenance efficiency of instrumentation.
The utility model structure is simple, easy to use, connects the feature that valve has compact, is convenient to install and use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation connecting valve in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is done with detailed description:
As depicted in figs. 1 and 2, high-voltage switch gear density monitor on-line calibration device described in the utility model, comprise density monitor 1 and be connected valve 2, described connection valve 2 is two-position three-way valve, and three interfaces of two-position three-way valve are respectively density monitor connecting interface, high-tension switch gear body connecting interface and retaining valve and insert connecting interface soon.Described density monitor connecting interface Connection Density relay 1, the detection gas input port of density monitor 1 and the conducting of density monitor connecting interface, described high-tension switch gear body connecting interface is connected for detecting interface with the tonifying Qi that high-tension switch gear body is arranged, described retaining valve is inserted in connecting interface soon and is provided with retaining valve quick connector 3, and retaining valve quick connector 3 is for being connected conducting with calibrating gas output unit.
In the present embodiment, density monitor connecting interface end is arranged with traveling nut 4, and the detection gas input port of density monitor 1 is threaded with density monitor connecting interface by traveling nut 4.Density monitor 1 be connected valve 2 and adopt thread connecting mode, the good effect that is tightly connected can be played on the one hand, can be convenient to carry out installing/dismounting to density monitor 1 on the other hand, reduce the complexity of existing density monitor 1 maintenance job.Be provided with packing ring 5 between the detection gas input port of density monitor connecting interface and density monitor 1, reduce density monitor connecting interface and density monitor 1 end wear on the one hand, on the other hand enhanced leaktightness effect.
High-tension switch gear body connecting interface end is provided with external thread 6, detects with tonifying Qi reserved on high-tension switch gear body the internal thread that interface arranges to match, the tonifying Qi being convenient to connection valve 2 and high-tension switch gear body are arranged detects interface connection disassembling.
In the application, retaining valve quick connector 3 is arranged on the retaining valve connecting valve 2 and inserts soon in connecting interface, the retaining valve quick connector 3 of particular design comprises the quick connector body 8 being provided with inner chamber 7, quick connector body 8 lower end is provided with inserts the external thread that matches of connecting interface inside surface internal thread soon with retaining valve, quick connector body 8 and retaining valve are inserted connecting interface soon and are adopted thread connecting mode, and the inner chamber 7 of quick connector body 8 inserts connecting interface conducting soon with retaining valve.Inner chamber 7 middle and lower part is provided with spring 9, spring 9 bottom is fixed on inner chamber 7 inside surface, the top of spring 9 is fixed with sealing frame 10, sealing frame 10 moves upward along inner chamber 7 under spring 9 drives, sealing frame 10 comprises circular top plate and is arranged on the plug in circular top plate, inner chamber 7 top is provided with draft tube 11, is provided with bore seal 12 in the inner chamber 7 below draft tube 11, bore seal 12 and sealing frame 10 mating shapes.Adopt pneumostop mode in the application, utilize spring 9 elastic force to realize sealing at the non-connection standard gas output device of retaining valve quick connector 3.When calibrating gas output unit outputting standard gas, when pressure serious offense spring 9 elastic force that exported calibrating gas produces, sealing frame 10 moves downward, and retaining valve inserts connecting interface and the conducting of high-tension switch gear body connecting interface soon.
In the present embodiment, be arranged with O-ring seals 13 outside plug, O-ring seals 13, can sealing effectiveness between enhanced leaktightness frame 10 and bore seal 12 between circular top plate and bore seal 12, prevents Leakage Gas.Circumferentially be provided with position limiting convex ring 14 in the middle part of draft tube 11, offer annular spacing groove 15 with on inner chamber 7 inwall of corresponding position, position limiting convex ring 14 position, the two cooperation is carried out spacing to draft tube 11.Draft tube 11 lower end is also provided with anti-back pieces 16, and anti-back pieces 16 can adopt the anti-back pieces 16 of various ways, carries out spacing to draft tube 11, prevents draft tube 11 from departing from normal position.
In the present embodiment, connect valve 2 and comprise valve body 18, in valve body 18, be provided with club 17, be also provided with in valve body 18 on club and seal 19 and club lower seal 20.
The utility model in use, can utilize the Switch Controller conducting direction connecting setting on valve 2 to control.In the present embodiment, when connecting the switching knob on valve 2 and being in "open" state, density monitor connecting interface and high-tension switch gear body connecting interface are in conducting state, being communicated with of density monitor 1 and high-voltage switch gear body can be realized, thus utilize density monitor 1 pair of intrinsic sulfur hexafluoride gas of high-voltage switch gear to carry out Density Detection.When connecting the switching knob on valve 2 and being in the state of " closing ", density monitor connecting interface and high-tension switch gear body connecting interface are in not on-state, density monitor 1 and high-voltage switch gear body separated, and high-tension switch gear body connecting interface and retaining valve are inserted connecting interface soon and be in conducting state, but keep closed state with the external world under the effect of retaining valve quick connector 3.
Separated due to density monitor 1 and high-voltage switch gear body, now can disassemble density monitor 1 from connection valve 2, carry out keeping in repair or laboratory investment; .Retaining valve quick connector 3 can also be connected with calibrating gas output unit, utilize calibrating gas output unit to insert connecting interface and high-tension switch gear body connecting interface soon by retaining valve quick connector 3, retaining valve and inject calibrating gas in high-tension switch gear body, realize the on-line calibration work to density monitor 1.
Claims (8)
1. a high-voltage switch gear density monitor on-line calibration device, it is characterized in that: comprise density monitor and be connected valve, described connection valve is two-position three-way valve, and three interfaces of two-position three-way valve are respectively density monitor connecting interface, high-tension switch gear body connecting interface and retaining valve and insert connecting interface soon; Described density monitor connecting interface Connection Density relay, the detection gas input port of density monitor and the conducting of density monitor connecting interface, described high-tension switch gear body connecting interface is connected for detecting interface with the tonifying Qi that high-tension switch gear body is arranged, described retaining valve is inserted in connecting interface soon and is provided with retaining valve quick connector, and retaining valve quick connector is used for being connected conducting with calibrating gas output unit.
2. high-voltage switch gear density monitor on-line calibration device according to claim 1, it is characterized in that: described density monitor connecting interface end is arranged with traveling nut, and the detection gas input port of density monitor is threaded with density monitor connecting interface by traveling nut.
3. high-voltage switch gear density monitor on-line calibration device according to claim 1, is characterized in that: be provided with packing ring between described density monitor connecting interface and the detection gas input port of density monitor.
4. high-voltage switch gear density monitor on-line calibration device according to claim 1, is characterized in that: described high-tension switch gear body connecting interface end is provided with external thread.
5. high-voltage switch gear density monitor on-line calibration device according to claim 1, it is characterized in that: described retaining valve quick connector comprises the quick connector body being provided with inner chamber, quick connector body lower end is provided with inserts the external thread that matches of connecting interface inside surface internal thread soon with retaining valve, inner chamber and retaining valve insert connecting interface conducting soon, inner chamber middle and lower part is provided with spring, spring bottom end is fixed on intracavity inner surface, the top of spring is fixed with sealing frame, sealing frame moves upward along inner chamber under Spring driving, sealing frame comprises circular top plate and is arranged on the plug in circular top plate, inner chamber top is provided with draft tube, bore seal is provided with in inner chamber below draft tube, bore seal and sealing frame mating shapes.
6. high-voltage switch gear density monitor on-line calibration device according to claim 5, is characterized in that: be arranged with O-ring seals outside described plug, O-ring seals is between circular top plate and bore seal.
7. high-voltage switch gear density monitor on-line calibration device according to claim 5, is characterized in that: be circumferentially provided with position limiting convex ring in the middle part of described draft tube, with in corresponding position, position limiting convex ring position, cavity wall offers annular spacing groove.
8. high-voltage switch gear density monitor on-line calibration device according to claim 5, is characterized in that: described draft tube lower end is provided with anti-back pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520673214.5U CN205103375U (en) | 2015-09-02 | 2015-09-02 | Online calibrating device of high -voltage switch density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520673214.5U CN205103375U (en) | 2015-09-02 | 2015-09-02 | Online calibrating device of high -voltage switch density relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205103375U true CN205103375U (en) | 2016-03-23 |
Family
ID=55519151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520673214.5U Expired - Fee Related CN205103375U (en) | 2015-09-02 | 2015-09-02 | Online calibrating device of high -voltage switch density relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205103375U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405394A (en) * | 2016-06-22 | 2017-02-15 | 国网安徽省电力公司检修公司 | Sulfur hexafluoride density relay verification device |
| CN110426628A (en) * | 2019-09-04 | 2019-11-08 | 上海乐研电气有限公司 | Transmitter and system for on-line testing gas density relay |
| CN110441680A (en) * | 2019-09-04 | 2019-11-12 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
| CN110514995A (en) * | 2019-09-04 | 2019-11-29 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
| CN110542853A (en) * | 2019-09-04 | 2019-12-06 | 上海乐研电气有限公司 | Gas density relay with online self-checking function and checking method thereof |
-
2015
- 2015-09-02 CN CN201520673214.5U patent/CN205103375U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405394A (en) * | 2016-06-22 | 2017-02-15 | 国网安徽省电力公司检修公司 | Sulfur hexafluoride density relay verification device |
| CN106405394B (en) * | 2016-06-22 | 2017-11-10 | 国网安徽省电力公司检修公司 | A kind of sulfur hexafluoride density relay calibration equipment |
| CN110426628A (en) * | 2019-09-04 | 2019-11-08 | 上海乐研电气有限公司 | Transmitter and system for on-line testing gas density relay |
| CN110441680A (en) * | 2019-09-04 | 2019-11-12 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
| CN110514995A (en) * | 2019-09-04 | 2019-11-29 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
| CN110542853A (en) * | 2019-09-04 | 2019-12-06 | 上海乐研电气有限公司 | Gas density relay with online self-checking function and checking method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20170902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |