CN208636173U - A kind of auxiliary device charging verification SF6 gas density is table - Google Patents
A kind of auxiliary device charging verification SF6 gas density is table Download PDFInfo
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- CN208636173U CN208636173U CN201821200336.2U CN201821200336U CN208636173U CN 208636173 U CN208636173 U CN 208636173U CN 201821200336 U CN201821200336 U CN 201821200336U CN 208636173 U CN208636173 U CN 208636173U
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Abstract
The utility model discloses a kind of auxiliary device that can charge verification SF6 gas density is table, it is characterised in that it includes shell, the shell side is equipped with enter line side connecting groove, the shell other side is equipped with operation and flanks wire casing, and the front of the shell is equipped with change-over switch and external test connection terminal；The enter line side connecting groove is electrically connected with SF6 gas density is table gauge outfit by gauge outfit lead-out wire, the operation flanks wire casing and is electrically connected with circuit breaker mechanism case by terminal block lead-out wire, and the external test connection terminal is electrically connected with tester by tester lead-out wire；The static contact of the change-over switch is electrically connected with enter line side connecting groove, and the moving contact of the change-over switch flanks wire casing with operation or external test connection terminal is electrically connected.The utility model can easily just carry out the switching between working condition and verification state, neither influence breaker apparatus operates normally, and can easily and safely realize the verification of meter by rotating the change-over switch.
Description
Technical field
The utility model belongs to the calibration technology field of air density meter, and specifically a kind of to charge verification SF6 gas close
Spend the auxiliary device of table.
Background technique
Because with other pressure gauges, the same its alarm and locking value in use for some time can generate one to SF6 gas density is table
Fixed drift, in addition temperature-compensating material can be such that alarm and locking value generates after a certain period of use time because material aging deforms
Large error；In addition, infrequently because of the movement of its contact, and possible contact movement is insensitive or fails, this hidden danger can be direct
Cause when SF6 switch is because gas leaks, when intrinsic pressure being made to be down to alarm or locking value, cannot and alarm or locking,
To lead to major accident, so should periodically be verified；Verifying work relates generally to two committed steps, one be gas circuit every
From one is circuit isolation, and gas circuit isolation is easier to realize, difficult point is that circuit is isolated；Circuit isolation includes power failure school
Test and charge verification two ways, the safety for the verification that has a power failure is higher, but will cause electricity loss and the method for operation it is thin
It is weak, and charge to verify to be easy to happen when disconnecting line and accidentally transmit, miss locking, DC loop ground connection or short circuit accident.
The principal mode of the SF6 gas density is table isolation circuit of electrification verification at present is still by the way of disconnecting line, gas
The gauge outfit of density meter is divided into plug-in and fixed two kinds of modes of connection, and the gauge outfit of plug-in directly extracts wiring assembly primary and secondary head
To disconnecting circuit；Fixed gauge outfit takes mechanism case terminal block to take out stitches as far as possible, if there is circuit drawing, can distinguish correspondence
The wiring of alarm and locking, the corresponding wiring in dismountable terminal block, thus disconnecting circuit.But running breaker mechanism
Internal wiring is once accidentally torn open or is got wrong, may cause circuit breaking, cause circuit breaker failure.If fixed gauge outfit is in machine
Structure case side can not take out stitches disconnecting circuit when, gauge outfit side can only be carried out take out stitches to carry out disconnecting circuit.And it takes out stitches there is very at this time
Risks.There are 7 small lines inside gauge outfit, 2 alarms, 4 are latched, 1 piece-root grafting.Alarm belongs to signal circuit, and locking belongs to control
Circuit processed mutually cannot accidentally be touched.In addition gauge outfit wiring is apart from small easy to operate, electrification very likely occurs accidentally to transmit when removing,
Accidentally locking, DC loop ground connection or short circuit accident.Therefore, needing one kind need not take out stitches and have a power failure, and both can guarantee switchgear just
Often operation, the device that verification SF6 gas density is table can be charged again.
Summary of the invention
The purpose of this utility model is that in view of the problems of the existing technology, providing one kind need not take out stitches and have a power failure, can
Guarantee switchgear operate normally, again can charge completion SF6 gas density is table verifying work charge verify SF6 gas it is close
Spend the auxiliary device of table.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of auxiliary device charging verification SF6 gas density is table, including shell, the shell side are equipped with enter line side
Connecting groove, the shell other side are equipped with operation and flank wire casing, and the front of the shell is equipped with change-over switch and external test connects
Line terminals；The enter line side connecting groove is electrically connected with SF6 gas density is table gauge outfit by gauge outfit lead-out wire, and the operation flanks line
Slot is electrically connected with circuit breaker mechanism case by terminal block lead-out wire, and the external test connection terminal and tester pass through verification
The electrical connection of instrument lead-out wire；The static contact of the change-over switch is electrically connected with enter line side connecting groove, the dynamic touching of the change-over switch
Head flanks wire casing with operation or external test connection terminal is electrically connected；When the moving contact, which flanks wire casing with operation, to be electrically connected,
In the converted switch access mechanism case terminal block of SF6 gas density is table gauge outfit lead-out wire, connects signal circuit and control is latched back
Road, when SF6 air pressure change reaches Alarm or " locking " condition, the mechanism case issue " SF6 pressure is low " alarm signal or
Control locked loop is connected to be latched the divide-shut brake of breaker；When the moving contact is electrically connected with external test connection terminal,
The converted switch of SF6 gas density is table gauge outfit lead-out wire accesses on external test connection terminal, thoroughly breaks with mechanism case terminal block
It opens, terminal block signal circuit can not be connected again with control locked loop, will not generate and accidentally transmit or malfunction, at this time will verification
Instrument lead-out wire accesses on the external test connection terminal, and the verifying work to SF6 gas density is table can be realized.
Specifically, the gauge outfit lead-out wire, terminal block lead-out wire and tester lead-out wire are 6 lead-out wires, wherein 2
Root is alarm signal line, and in addition 4 are block signal line.
Specifically, it includes 6 interfaces that the enter line side connecting groove, operation, which flank wire casing, and two of them interface is for connecing
Alarm signal line, in addition 4 interfaces are for connecing block signal line.
Specifically, the external test connection terminal includes 6 connecting terminals, wherein 2 connecting terminals are for taking alarm
Signal wire, in addition 4 connecting terminals are for connecing block signal line.
Specifically, the change-over switch is knob switch, including operation shelves and detection two gears of shelves；
Further, when the change-over switch is threaded to operation shelves, the moving contact of the change-over switch and operation flank line
Slot electrical connection；When the change-over switch is threaded to detection shelves, the moving contact of the change-over switch and external test connection terminal electricity
Connection.
Specifically, it is equipped with mechanism case terminal block in the circuit breaker mechanism case, facilitates wiring.
Compared with prior art, the utility model has the beneficial effects that the utility model passes through in air density meter gauge outfit
One is arranged between mechanism case and tester can be with the auxiliary device of free switching connection, by rotating the auxiliary
Change-over switch on device, can be with the circuit connection between free switching gauge outfit and mechanism case and tester, to realize
Under conditions of guaranteeing that switchgear operates normally, without taking out stitches and having a power failure, the verifying work of SF6 gas density is table can be completed.
Detailed description of the invention
Fig. 1 is the overall structure diagram for the auxiliary device that the utility model one kind can charge verification SF6 gas density is table；
Fig. 2 is the electric connection structure signal for the auxiliary device that the utility model one kind can charge verification SF6 gas density is table
Figure；
Fig. 3 is that SF6 gas density is table controls divide-shut brake locking principle figure in embodiment；
Fig. 4 is SF6 gas density is table hair alarm signal principle figure in embodiment；
In figure: 1, shell；2, change-over switch；3, enter line side connecting groove；4, operation flanks wire casing；5, external test connection end
Son；6, gauge outfit lead-out wire；7, terminal block lead-out wire；8, tester lead-out wire；9, SF6 gas density is table gauge outfit；10, mechanism case
Terminal block；11, circuit breaker mechanism case；12, tester.
Specific embodiment
Below in conjunction with the attached drawing in the utility model, the technical solution of the utility model is clearly and completely retouched
It states, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on this
Embodiment in utility model, those of ordinary skill in the art under the conditions of not making creative work it is obtained it is all its
Its embodiment, fall within the protection scope of the utility model.
As shown in Figure 1, 2, a kind of auxiliary device that can charge verification SF6 gas density is table is present embodiments provided, including
Shell 1,1 side of shell are equipped with enter line side connecting groove 3, and 1 other side of shell is equipped with operation and flanks wire casing 4, described outer
The front of shell 1 is equipped with change-over switch 2 and external test connection terminal 5；The enter line side connecting groove 3 and SF6 gas density is table table
First 9 are electrically connected by gauge outfit lead-out wire 6, and the operation flanks wire casing 4 and circuit breaker mechanism case 11 and passes through 7 electricity of terminal block lead-out wire
Connection, the external test connection terminal 5 are electrically connected with tester 12 by tester lead-out wire 8；The change-over switch 2
Static contact be electrically connected with enter line side connecting groove 3, the moving contact of the change-over switch 2 and operation flank wire casing 4 or external test
Connecting terminal 5 is electrically connected；When the moving contact, which flanks wire casing 4 with operation, to be electrically connected, the converted switch 2 of gauge outfit lead-out wire 6 is connect
Enter in mechanism case terminal block 10, signal circuit and control locked loop is connected, when SF6 air pressure change reaches Alarm or " locking "
When condition, the circuit breaker mechanism case 11 issues " SF6 pressure is low " alarm signal or connects control locked loop to be latched open circuit
The divide-shut brake of device；When the moving contact is electrically connected with external test connection terminal 5, the access of the converted switch 2 of gauge outfit lead-out wire 6
It on external test connection terminal 5, is thoroughly disconnected with mechanism case terminal block 10, terminal block signal circuit and control locked loop can not
It connects again, will not generate and accidentally transmit or malfunction, tester lead-out wire 8 is accessed into the external test connection terminal at this time
On 5, the verifying work to SF6 gas density is table can be realized.
Specifically, the gauge outfit lead-out wire 6, terminal block lead-out wire 7 and tester lead-out wire 8 are 6 lead-out wires,
In 1, No. 2 signal wire be alarm signal line, 3,4,5, No. 6 signal wires are block signal line.
Specifically, the enter line side connecting groove 3, operation flank wire casing 4 including 6 interfaces, wherein 1, No. 2 interface applies Huang
Color marker is used for signal wire taking alarm；3,4,5, No. 6 interface coating Red labels, for connecing block signal line.
Specifically, the external test connection terminal 5 includes 6 connecting terminals, wherein 1, No. 2 connecting terminal applies yellow mark
Note is used for signal wire taking alarm；3,4,5, No. 6 connecting terminal coating Red labels, for connecing block signal line.
Specifically, the change-over switch 2 is knob switch, including operation shelves and detection two gears of shelves；
Further, when the change-over switch 2 is threaded to operation shelves, the moving contact of the change-over switch 2 is flanked with operation
Wire casing 4 is electrically connected；When the change-over switch 2 is threaded to detection shelves, the moving contact of the change-over switch 2 and external test connection end
Son 5 is electrically connected.
Specifically, it is equipped with mechanism case terminal block 10 in the circuit breaker mechanism case 11, facilitates wiring.
As shown in Figure 3,4, Fig. 3 is that SF6 gas density is table controls divide-shut brake locking principle figure in the present embodiment, and Fig. 4 is this
SF6 gas density is table hair alarm signal principle figure in embodiment；
Specifically, when the SF6 gas pressure value in gauge outfit is rated pressure, gauge outfit alarm contact P1-2 is disconnected, SF6 pressure
The low alarm signal circuit of power is obstructed；Gauge outfit is latched contact P3-4 and disconnects, and K14 coil must not be electric, does not generate block action, divide-shut brake
The normally closed contact of K14 remains turned in circuit, and divide-shut brake circuit is normal.
Specifically, when the SF6 gas pressure value in gauge outfit is reduced to the alarm pressure value of circuit breaker mechanism case 11, gauge outfit
The contact P1-2 that alarms is connected, and sends out " the low alarm of SF6 pressure " signal.
Specifically, when the SF6 gas pressure value in gauge outfit is reduced to the locking pressure value of circuit breaker mechanism case 11, gauge outfit
It is latched contact P3-4 to connect, K14 coil energized action, K14 normally closed contact is opened in divide-shut brake circuit, and cutting divide-shut brake returns
Road is latched divide-shut brake.
The utility model between SF6 gas density is table gauge outfit 9 and circuit breaker mechanism case 11 and tester 12 by increasing
Add auxiliary device, the switching between working condition and verification state, neither shadow can easily be just carried out by rotary sampling switch 2
It rings breaker apparatus to operate normally, and can easily realize the verification of meter.Keep work lighter, it is safer.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. the auxiliary device that one kind can charge verification SF6 gas density is table, which is characterized in that including shell, the shell side
Equipped with enter line side connecting groove, the shell other side is equipped with operation and flanks wire casing, the front of the shell be equipped with change-over switch and
External test connection terminal；The enter line side connecting groove is electrically connected with SF6 gas density is table gauge outfit by gauge outfit lead-out wire, described
Operation flanks wire casing and is electrically connected with circuit breaker mechanism case by terminal block lead-out wire, the external test connection terminal and tester
Device is electrically connected by tester lead-out wire；The static contact of the change-over switch is electrically connected with enter line side connecting groove, the conversion
The moving contact of switch flanks wire casing with operation or external test connection terminal is electrically connected.
2. the auxiliary device that one kind according to claim 1 can charge verification SF6 gas density is table, which is characterized in that institute
Stating gauge outfit lead-out wire, terminal block lead-out wire and tester lead-out wire is 6 lead-out wires, wherein 2 are alarm signal line, separately
Outer 4 are block signal line.
3. the auxiliary device that one kind according to claim 1 can charge verification SF6 gas density is table, which is characterized in that institute
State enter line side connecting groove, operation flanks wire casing and includes 6 interfaces, two of them interface is used for signal wire taking alarm, in addition 4
Interface is for connecing block signal line.
4. the auxiliary device that one kind according to claim 1 can charge verification SF6 gas density is table, which is characterized in that institute
Stating external test connection terminal includes 6 connecting terminals, wherein 2 connecting terminals are used for signal wire taking alarm, in addition 4 wiring
Terminal is for connecing block signal line.
5. the auxiliary device that one kind according to claim 1 can charge verification SF6 gas density is table, which is characterized in that institute
Stating change-over switch is knob switch, including operation shelves and detection two gears of shelves.
6. the auxiliary device that one kind according to claim 1 can charge verification SF6 gas density is table, which is characterized in that institute
It states and is equipped with mechanism case terminal block in circuit breaker mechanism case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200336.2U CN208636173U (en) | 2018-07-27 | 2018-07-27 | A kind of auxiliary device charging verification SF6 gas density is table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200336.2U CN208636173U (en) | 2018-07-27 | 2018-07-27 | A kind of auxiliary device charging verification SF6 gas density is table |
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| Publication Number | Publication Date |
|---|---|
| CN208636173U true CN208636173U (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821200336.2U Active CN208636173U (en) | 2018-07-27 | 2018-07-27 | A kind of auxiliary device charging verification SF6 gas density is table |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888054A (en) * | 2019-12-27 | 2020-03-17 | 常州捷卓智能科技有限公司 | Electrified calibration equipment of sulfur hexafluoride density relay |
| CN112161787A (en) * | 2020-09-23 | 2021-01-01 | 广东电网有限责任公司 | SF (sulfur hexafluoride)6Gas density relay auxiliary checking device |
-
2018
- 2018-07-27 CN CN201821200336.2U patent/CN208636173U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888054A (en) * | 2019-12-27 | 2020-03-17 | 常州捷卓智能科技有限公司 | Electrified calibration equipment of sulfur hexafluoride density relay |
| CN112161787A (en) * | 2020-09-23 | 2021-01-01 | 广东电网有限责任公司 | SF (sulfur hexafluoride)6Gas density relay auxiliary checking device |
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