CN206541771U - A kind of retainable sulfur hexafluoride gas density relay of contact - Google Patents
A kind of retainable sulfur hexafluoride gas density relay of contact Download PDFInfo
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- CN206541771U CN206541771U CN201720130915.3U CN201720130915U CN206541771U CN 206541771 U CN206541771 U CN 206541771U CN 201720130915 U CN201720130915 U CN 201720130915U CN 206541771 U CN206541771 U CN 206541771U
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- pointer
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- sulfur hexafluoride
- hexafluoride gas
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Abstract
The utility model provides a kind of retainable sulfur hexafluoride gas density relay of contact, including watchcase, and dial plate, pointer, electrical contact switch and contact holding meanss in watchcase；Contact holding meanss include magnet, and magnet is fixed on the overpressure alarm junction on dial plate；Electrical contact switch is located at the dial plate back side, can be with output alarm signal when connecting；The dial plate back side is additionally provided with electric connection board, pointer is magnetic metal pointer, pointer is connected with electric connection board, in throw of pointer to overpressure alarm junction, electric connection board is deflected therewith, is connected electrical contact switch, is attracted each other by indicator with magnet, indicator is fixed on overpressure alarm junction, is continuously turned on electrical contact switch；Under external force, indicator may exit off overpressure alarm junction, continue to be monitored the pressure of sulfur hexafluoride gas.The relay provided by the utility model, it is simple in construction, while can persistently be alarmed arcing failure.
Description
Technical field
The utility model is related to relay technical field, specifically, is a kind of retainable sulfur hexafluoride gas of contact
Density monitor.
Background technology
Sulphur hexafloride circuit breaker (SF6Switch) it is the widely used High-Voltage Electrical Appliances of power system.SF6The reliability service of switch is
As for one of most concerned problem of electricity consumption department.In switchgear, Internal faults arc accident seldom occurs, but can not be complete
Avoid entirely.Once it occur, and greatly harm will be caused to the personal safety of staff and equipment.Fault electric arc can be very
High pressure and high temperature are formed in short time.Parts in equipment can depart from their fixation machine under the effect of such high pressure
Structure is simultaneously raised.High temperature produces fusing and evaporation process also in equipment.As a result produce poison gas, poison gas again under pressure to
Outer discharge, jeopardizes the life security of neighbouring staff.In addition to personal injury, the also damage of equipment, in building
Switchgear is partly or wholly destroyed, and causes great economic loss.
SF6SF in breaker6Gas is sealed in a changeless container, the rated pressure at 20 DEG C
Under, it has certain density value, in the range of the various enabled conditions that breaker is run, although SF6The pressure of gas with
The change of temperature and change, still, SF6The density value of gas is constant all the time.Because SF6The insulation of breaker and arc extinction performance exist
It is heavily dependent on SF6The purity and density of gas, so, to SF6The detection of gas purity and the monitoring of density seem special
It is unimportant.If monitoring SF using ordinarily manometer6The leakage of gas, it is due to be truly present leakage also that, which will be hard to tell,
It is due to variation of ambient temperature and causes SF6The pressure change of gas.In order to be able to reach the purpose of often monitoring density, SF6Open circuit
Device should install SF6Gas density relay.SF6Gas density relay is for monitoring SF in operation6SF in Switch main body6Gas
The critical elements of volume density change, the quality of its performance directly influences SF6The operation safety of switch.
A kind of SF is disclosed in bibliography 1 (CN102087931A)6Density monitor, including relay body, shell,
Temperature-sensing element, pointer-type indicate disk and sensing element, it is characterised in that also including alarm and recoil simulator, improve the safety of equipment
Property, in addition, its joint is detachable, can the demand according to user and the switch without specification support the use, it is wider using scope.
The sensing element of the technical scheme repeat circuit is made up of bourdon tube and bimetal leaf, and its shell is made up of stainless steel
, can be waterproof and dampproof, improve product stability while extension can product service life；The alarm and recoil simulator are
According to the pressure value of output gas；Come what is judged, the setting of its pressure value can voluntarily be set according to the requirement of user.But from this
The inventive concept of technical scheme is not difficult to find out that it can only detect SF6Gas pressure size, and only in SF6Gas is leaked, detection
Alarm can be just sent during hypotony, it is impossible to alarm is sent to the high pressure that arcing failure is caused, it is impossible to which whether is detection device
Generation arcing failure.
A kind of SF is also disclosed that in bibliography 2 (CN203787346U)6Density monitor, including relay body and set
Outer elastic corrugated tube elements are provided with the measurement chamber enclosure being placed on rear side of relay body, the measurement chamber enclosure and positioned at outer
The interior elastic corrugated tube elements of elastic bellows element internal, the outer elastic corrugated tube elements and the interior elastic bellows member
Compensated cavity is formed between part, measurement chamber, the measurement are formed between the outer elastic corrugated tube elements and the measurement chamber enclosure
Chamber enclosure is to be provided with the double hyer insulation plastic alloy shell of low-thermal conductivity, the interlayer of the double hyer insulation plastic alloy shell
Foam layer vacuumizes chamber.The relay that the technical scheme is provided can be prevented effectively from false alarm when environment temperature is mutated,
Its monitoring accuracy is higher, but it can only equally detect SF6Gas pressure size, and only in SF6Gas is leaked, detection pressure
Alarm can be just sent when power is too low, it is impossible to which alarm is sent to the high pressure that arcing failure is caused, it is impossible to which whether detection device is sent out
Raw arcing failure.
A kind of intelligent high-voltage direct-current relay, including relay body are disclosed in bibliography 3 (CN103065883A),
The magnetism gathering rings that band gap is cased with pin, described pin are provided with relay body；It is top-down on relay body
It is inserted with intelligent object；Intelligent object detection senses magnetic in the magnetism gathering rings because of caused by the change of the electric current passed through on relay body
Voltage signal produced by the change of field.The invention introduces CAN technology in relay so that there is relay bus to lead to
Telecommunication function.Current sensor is added in relay simultaneously, current detecting, overcurrent protection and short-circuit protection is realized, and to electricity
Stream signal is filtered and analyzed, and detects the generation of fault electric arc.Intelligent relay control module simultaneously data be transferred to it is upper
Machine, substantially increases the reliability, maintainability, scalability of system.The relay construction that the program is provided is complicated, is special
What door was designed is exclusively used in monitoring arcing failure, it is impossible to for monitoring SF6The variable density of gas.
Bibliography 4 (CN103715010A) discloses a kind of sulfur hexafluoride gas density relay, including housing, setting
In housing and relatively independent signal control portion and indicating value display portion；Signal control portion includes control pedestal, control
End seat, control Baden pipe, control temperature-compensating plate, control linking arm, control signal regulating part and some it is used as signal generator
Control microswitch；Control microswitch vertical with controlling the width of Baden pipe with the width of its operation handle
Mode is set；Indicating value display portion includes display Baden pipe, displays temperature compensating plate, display base, display end seat, display machine
Core, pointer, display linking arm, display Signal Regulation part and some display microswitches as signal generator；The technical side
Sulfur hexafluoride gas density relay in case can realize overpressure alarm and control, and density monitor is improved to greatest extent
Precision, reduces the thickness of density monitor, expands it and use scope, meet the application of various places.Although in the bibliography
Sulfur fluoride gas density relay can realize the monitoring to sulfur hexafluoride gas pressure simultaneously, but the SF6 gas density is
Relay only has the function of monitoring in real time, if arcing failure occurs in switchgear, then gas pressure drops to overpressure alarm
When value is following, overpressure alarm would not be exported to background monitoring again.If backstage occurs neglecting or other factors, it may lead
Cause arcing failure to fail timely discovery, cause great loss.
Therefore it provides a kind of simple in construction, sulfur hexafluoride gas density relay that can be persistently alarmed arcing failure
Device turns into this electric field technical problem urgently to be resolved hurrily.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in construction, and arcing failure persistently can be alarmed
Sulfur hexafluoride gas density relay.
In order to solve the above technical problems, the utility model provide a kind of retainable sulfur hexafluoride gas density of contact after
Electrical equipment,
Including watchcase, and dial plate, pointer, electrical contact switch and contact holding meanss in watchcase；
Contact holding meanss include magnet, and magnet is fixed on the overpressure alarm junction on dial plate；
Electrical contact switch is located at the dial plate back side, can be with output alarm signal when connecting；
The dial plate back side is additionally provided with electric connection board, and pointer is magnetic metal pointer, and pointer is connected with electric connection board, inclined in pointer
When going to overpressure alarm junction, electric connection board is deflected therewith, connects electrical contact switch, and pointer attracts each other with magnet, pointer
Overpressure alarm junction is fixed on, electrical contact switch is continuously turned on；Under external force, pointer may exit off the superpressure report
Alert junction.
The dial plate front referred in the utility model refers in actual use that the one side that testing staff is observed that is right
The back side answered be testing staff not it is observed that one side.
Further, magnet is fixed on dial plate by steady pin.
Further, magnet is fixed on the dial plate back side by steady pin.
Further, magnetic metal pointer is made up of spring steel material.
Further, dial plate is marked with scale and corresponding pressure value.
In summary, the retainable sulfur hexafluoride gas density relay of contact provided by the utility model, it is special
In monitoring and recording whether switchgear occurs arcing failure, if arcing failure occurs for switchgear, fault electric arc can be very
High pressure and high temperature are formed in short time, SF in air chamber is tested6Gas pressure of short duration can rise violently, and make throw of pointer to overpressure alarm
Junction, connects electrical contact switch, output alarm signal, even if being tested SF in air chamber afterwards6Gas pressure declines, and this practicality is new
Contact holding meanss in type include magnet, and using attraction of the magnet to magnetic metal pointer, magnetic metal pointer is fixed
In overpressure alarm junction, relay is set to continue output alarm signal.Overcome SF of the prior art6Gas density relay
In use, if arcing failure occurs in switchgear, when then gas pressure is dropped to below overpressure alarm value, pointer
Revolution, break switch, overpressure alarm would not export to backstage again, the short defect of time of fire alarming, it is to avoid due to work
Personnel's carelessness causes the situation for failing to find this arcing failure.
Although within the time of lasting alarm, the relay that the utility model is provided is unable to SF in switching devices6Gas
Pressure change detected, but after staff is found that the arcing failure, can be made by tapping the watchcase of relay
Magnetic metal pointer leaves contact holding meanss, continues to SF in tested air chamber6Gas pressure realizes real-time monitoring.This practicality is new
The relay that type is provided, SF can be not only monitored in real time6The variable density of gas, while can persistently be reported to arcing failure again
It is alert, it is simple in construction, production cost is saved, the practicality in industry is improved.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 is the partial structural diagram of a density monitor provided by the utility model；
Fig. 2 is profile of the density monitor along A-A faces shown in Fig. 1；
Fig. 3 is the top view of the density monitor shown in Fig. 1；
Fig. 4 is the density monitor enlarged fragmentary cross section shown in Fig. 1.
Element numbers are as follows：
1- watchcases
11- ventilating joints
12- cable connectors
2- dial plates
3- pointers
4- pressure responsive devices
5- transmission devices
6- electrical contact switch
7- contact holding meanss
71- steady pins
72- magnet
Embodiment
Presently in connection with accompanying drawing, better embodiment of the present utility model is discussed in detail.Although description of the present utility model will
Introduced together with reference to each embodiment, but this feature for not representing this utility model is only limitted to the several embodiments.Just
Just on the contrary, being to be had to cover based on claim of the present utility model with reference to the purpose that embodiment makees utility model introduction
The other selections or transformation that may extend.Depth of the present utility model is understood in order to provide, will be comprising perhaps in describing below
Many concrete details.The utility model can also be implemented without using these details.In addition, in order to avoid this chaotic or fuzzy practicality
New emphasis, some details will be omitted in the de-scription.
" on ", " under ", "left", "right", " top ", " bottom ", are in order to preferably in addition, used in the following description
Describe better embodiment of the present utility model and set, should not be construed as to limitation of the present utility model.
The dial plate front referred in the utility model refers in actual use that the one side that monitoring personnel is observed that is right
The back side answered be monitoring personnel not it is observed that one side.
Embodiment 1
As Figure 1-3, the utility model provides a kind of retainable sulfur hexafluoride gas density relay of contact, bag
Include watchcase 1, and dial plate 2, pointer 3, pressure responsive device 4, transmission device 5, electrical contact switch 6 and contact holding in watchcase 1
Device 7.Watchcase 1 be provided with cable connector 12 and ventilating joint 11, cable connector 12 be used for connection cable, output alarm signal,
The one end of ventilating joint 11 is connected with tested air chamber, and the other end is connected with pressure responsive device 4, and transmission is also associated with pressure responsive device 4
Device 5, transmission device 5 is further connected with pointer 3, is the power that pointer 3 provides deflection.Dial plate 2 is marked with scale and correspondingly
Pressure value.Contact holding meanss 7 include magnet 72, and magnet 72 is fixed on the overpressure alarm junction on dial plate 2.Electric contact is opened
Close 6 and be located at the back side of dial plate 2, can be by electric wire by the outside output alarm signal of cable connector 12 when connecting.The back side of dial plate 2 is also
Provided with electric connection board, pointer 3 is magnetic metal pointer, and pointer 3 is connected with electric connection board, and deflecting to overpressure alarm in pointer 3 connects
When at point, electric connection board is deflected therewith, connects electrical contact switch 6, because pointer 3 and magnet 72 attract each other, pointer 3 can be fixed
In overpressure alarm junction, it is continuously turned on electrical contact switch 6.Under external force, for example the watchcase by tapping relay
1, pointer 3 may exit off overpressure alarm junction.
Among density monitor work process, because pressure responsive device 4 passes through hexafluoro in ventilating joint 11 and tested air chamber
Change sulphur gas to be connected, if sulfur hexafluoride gas pressure produces change in tested air chamber, pressure responsive device 4 can be in the change pressure
In the presence of produce displacement.The one end of transmission device 5 is connected with pressure responsive device 4, and the other end is connected with pointer 3, and transmission device 5 will be felt
The displacement equations of pressure device 4 are simultaneously conducted to pointer 3, drive pointer 3 to deflect；Dial plate 2 is marked with scale and corresponding pressure
Sulfur hexafluoride gas pressure value in value, the tested air chamber for showing the correspondence deflection angle of pointer 3；When occurring arcing failure,
Fault electric arc can form high pressure and high temperature within a very short time, be tested sulfur hexafluoride gas pressure in air chamber and understand moment drastically
Increase, when sulfur hexafluoride gas pressure reaches more than overpressure alarm value in tested air chamber, pointer 3 can deflect to overpressure alarm and connect
At point, electric connection board is deflected therewith, electrical contact switch 6 is connected, by electric wire by the outside output alarm signal of cable connector 12.I.e.
Make to work as and be tested when pressure is less than overpressure alarm value, due in contact holding meanss 7 in air chamber under sulfur hexafluoride gas pressure
The attraction to pointer 3 of magnet 72, pointer 3 still can be fixed on overpressure alarm junction, electrical contact switch 6 is persistently connect
It is logical, continue output alarm signal, it is to avoid because staff's inadvertent causes the situation that fails to find this arcing failure.
During relay carries out continuing arcing fault alarm, the relay that the utility model is provided is temporarily lost with
Detection function to being tested sulfur hexafluoride gas pressure change in air chamber.The arcing failure is found in operating personnel, air chamber is tested
, can under external force after interior sulfur hexafluoride gas pressure is reduced to below overpressure alarm value, percussion density for example gently
The watchcase 1 of relay, is not to be fixedly connected because pointer 3 is to be fixed on overpressure alarm junction by the effect of magnetic force, is led to
Conduction will be shaken to pointer 3 by crossing percussion watchcase 1, in the presence of power of the pressure responsive device 4 to the resilience of pointer 3, and pointer 3 can be from super
Pressure alarm junction is left, and returns to the corresponding inflection point of sulfur hexafluoride gas pressure in tested air chamber, electric connection board therewith from
Electrical contact switch 6 is opened, stops output alarm signal, you can sulfur hexafluoride gas pressure in tested air chamber is examined in real time again
Survey, when occurring arcing failure in air chamber again, output alarm signal can be continued again.
Further, magnet 72 can be fixed on overpressure alarm junction by the common any method in this area, for example,
Directly magnet 72 is fixed on dial plate 2.It is furthermore preferred that being as shown in figure 4, magnet 72 is to be fixed on dial plate by steady pin 71
On 2, steady pin 71 and magnet 72 can by the common threaded connection in this area, be connected together it is either direct by adhesive
It is bonded on dial plate 2.
Further, as shown in figure 4, it is by solid that magnet 72 is fixed on the back side of dial plate 2, i.e. magnet 72 by steady pin 71
Rationed marketing 71 is fixed on one side opposite with pointer 3 on dial plate 2, and staff only observes steady pin in dial plate front, more beautiful
See.And when pointer 3 deflects to overpressure alarm junction, pointer 3 is not contacted directly with magnet 72.So in tested air chamber
After sulfur hexafluoride gas pressure is reduced to below overpressure alarm value, it is only necessary to which less power can be such that pointer 3 is separated with magnet 72.
Further, pointer 3 is made up of spring steel material.Spring steel material is under shock and vibration or long-term alternate stress
With high tensile strength, elastic limit, high fatigue strength；There is stronger attraction with magnet 72 simultaneously, can be abundant
The need for meeting the utility model.
In summary, the retainable sulfur hexafluoride gas density relay of contact provided by the utility model, it is special
In monitoring and recording whether switchgear occurs arcing failure, if arcing failure occurs for switchgear, fault electric arc can be very
High pressure and high temperature are formed in short time, SF in air chamber is tested6Gas pressure of short duration can rise violently, and make throw of pointer to overpressure alarm
Junction, connects electrical contact switch, output alarm signal, even if being tested SF in air chamber afterwards6Gas pressure declines, and this practicality is new
Contact holding meanss in type are made up of magnet and steady pin, using attraction of the magnet to magnetic metal pointer, by magnetic
Metal finger is fixed on overpressure alarm junction, relay is continued output alarm signal.Overcome SF of the prior art6Gas
In use, if arcing failure occurs in switchgear, then gas pressure drops to overpressure alarm to volume density relay
When value is following, cursor backward, break switch, overpressure alarm signal would not be exported to backstage again, and time of fire alarming is short to be lacked
Fall into, it is to avoid because staff neglects the situation for causing to fail to find this arcing failure.
Although within the time of lasting alarm, the relay that the utility model is provided is unable to SF in switching devices6Gas
Pressure change detected, but after staff is found that the arcing failure, can be made by tapping the watchcase of relay
Magnetic metal pointer leaves overpressure alarm junction, continues to SF in tested air chamber6Gas pressure realizes real-time monitoring.This practicality
New provided relay, SF can be not only monitored in real time6The variable density of gas, while can be continued to arcing failure again
Alarm, it is simple in construction, save production cost.
Above-mentioned explanation is the embodiment of embodiment in the utility model, for being illustrated more clearly that this practicality is new
The utility model design of type, but it is not for the restriction to right of the present utility model.It is new according to this practicality
The utility model design of type, those skilled in the art can easy variants and modifications the above embodiments, these belong to this practicality
Variants and modifications in new utility model design are all contained within the scope of the utility model appended claims.
Claims (5)
1. a kind of retainable sulfur hexafluoride gas density relay of contact, it is characterised in that including watchcase, and positioned at the table
Dial plate, pointer, electrical contact switch and contact holding meanss in shell；
The contact holding meanss include magnet, and the magnet is fixed on the overpressure alarm junction on the dial plate；
The electrical contact switch is located at the dial plate back side, can be with output alarm signal when connecting；
The dial plate back side is additionally provided with electric connection board, and the pointer is magnetic metal pointer, the pointer and the electric connection board
It is connected, in the throw of pointer to the overpressure alarm junction, the electric connection board is deflected therewith, connects the electric contact
Switch, the pointer attracts each other with the magnet, and the pointer is fixed on the overpressure alarm junction, makes the electric contact
Switch is continuously turned on；Under external force, the pointer may exit off the overpressure alarm junction.
2. a kind of retainable sulfur hexafluoride gas density relay of contact according to claim 1, it is characterised in that institute
Magnet is stated to be fixed on the dial plate by steady pin.
3. a kind of retainable sulfur hexafluoride gas density relay of contact according to claim 2, it is characterised in that institute
State magnet and the dial plate back side is fixed on by the steady pin.
4. a kind of retainable sulfur hexafluoride gas density relay of contact according to claim 1, it is characterised in that institute
Magnetic metal pointer is stated to be made up of spring steel material.
5. a kind of retainable sulfur hexafluoride gas density relay of contact according to claim 1, it is characterised in that institute
State dial plate and be marked with scale and corresponding pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720130915.3U CN206541771U (en) | 2017-02-14 | 2017-02-14 | A kind of retainable sulfur hexafluoride gas density relay of contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720130915.3U CN206541771U (en) | 2017-02-14 | 2017-02-14 | A kind of retainable sulfur hexafluoride gas density relay of contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206541771U true CN206541771U (en) | 2017-10-03 |
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|---|---|---|---|
| CN201720130915.3U Active CN206541771U (en) | 2017-02-14 | 2017-02-14 | A kind of retainable sulfur hexafluoride gas density relay of contact |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799356A (en) * | 2017-11-29 | 2018-03-13 | 上海乐研电气有限公司 | A kind of electro connecting pressure gauge kept with contact action |
| CN107863269A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of microminiature gas density relay |
| CN107863271A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of high antivibration gas density relay |
| CN107863272A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay for being provided with alarm holding structure |
| CN107863268A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay superpressure signal realizes the method kept |
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2017
- 2017-02-14 CN CN201720130915.3U patent/CN206541771U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107799356A (en) * | 2017-11-29 | 2018-03-13 | 上海乐研电气有限公司 | A kind of electro connecting pressure gauge kept with contact action |
| CN107863269A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of microminiature gas density relay |
| CN107863271A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of high antivibration gas density relay |
| CN107863272A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay for being provided with alarm holding structure |
| CN107863268A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay superpressure signal realizes the method kept |
| CN109904033A (en) * | 2017-11-29 | 2019-06-18 | 上海乐研电气有限公司 | A kind of method that gas density relay superpressure signal realizes holding |
| CN107863268B (en) * | 2017-11-29 | 2019-12-10 | 上海乐研电气有限公司 | Method for realizing holding of overpressure signal of gas density relay |
| CN107799356B (en) * | 2017-11-29 | 2020-11-06 | 上海乐研电气有限公司 | Electric contact pressure gauge with contact action keeping function |
| CN109904033B (en) * | 2017-11-29 | 2021-02-09 | 上海乐研电气有限公司 | Method for realizing holding of overpressure signal of gas density relay |
| CN107863271B (en) * | 2017-11-29 | 2021-04-16 | 上海乐研电气有限公司 | High-vibration-resistance gas density relay |
| CN107863272B (en) * | 2017-11-29 | 2021-04-30 | 上海乐研电气有限公司 | Gas density relay with warning retaining structure |
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