CN204668823U - A kind of low pressure warning/locking device of Inflatable ring main unit and Inflatable ring main unit - Google Patents
A kind of low pressure warning/locking device of Inflatable ring main unit and Inflatable ring main unit Download PDFInfo
- Publication number
- CN204668823U CN204668823U CN201520382304.9U CN201520382304U CN204668823U CN 204668823 U CN204668823 U CN 204668823U CN 201520382304 U CN201520382304 U CN 201520382304U CN 204668823 U CN204668823 U CN 204668823U
- Authority
- CN
- China
- Prior art keywords
- main unit
- ring main
- contact
- inflatable ring
- low pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The utility model discloses a kind of low pressure warning/locking device of Inflatable ring main unit, comprise the low pressure alarm sound loop and low pressure warning instruction loop that are made up of elaterometer, relay K A, power cut off delay time relay KT, buzzer BZ, contact type intermediate relay KM, indicator light HL; Described contact type intermediate relay KM has multipair contact, wherein the first normally opened contact is connected with described indicator light HL, second normally opened contact is used for connecting with the tripping coil TQ in the trip(ping) circuit of Inflatable ring main unit, and the 3rd, the 4th normally-closed contact is used for being connected with the locked loop of Inflatable ring main unit; The invention also discloses the Inflatable ring main unit containing above-mentioned low pressure warning/locking device.The low pressure warning/locking device of Inflatable ring main unit of the present utility model is low to when arranging below atmospheric pressure value at Inflatable ring main unit air pressure, and indicator light HL is bright, and buzzer BZ rings; carry out alarm; simultaneously electric loop locking also trips, and available protecting Inflatable ring main unit, is suitable for applying.
Description
Technical field
The utility model relates to ring main unit field, particularly, relates to a kind of low pressure warning/locking device and Inflatable ring main unit of Inflatable ring main unit.
Background technology
Ring main unit is that one group of high voltage switchgear is contained in steel sheet metal cabinet or makes the electric equipment of assembled compartment ring network power supplying units, and be divided into all insulation and semi-insulating cabinet, wherein all insulation cabinet is exactly gas-filling cabinet.Along with the extensive application of Inflatable ring main unit, thus expose this serious problem of Inflatable ring main unit low pressure, how to found a kind of new Inflatable ring main unit and the low pressure warning/locking device thereof with safe early warning tripping operation blocking function, become the target that current industry pole need be improved.
Utility model content
The purpose of this utility model is to provide a kind of new Inflatable ring main unit and the low pressure warning/locking device thereof with safe early warning tripping operation blocking function.
To achieve these goals, the utility model adopts following technical scheme:
A low pressure warning/locking device for Inflatable ring main unit, comprising: elaterometer, relay K A, power cut off delay time relay KT, buzzer BZ, contact type intermediate relay KM, indicator light HL, and wherein, the contact MD of described elaterometer has two; Contact MD, a relay K A, power cut off delay time relay KT, the buzzer BZ of described elaterometer connect to form low pressure alarm sound loop; Another contact MD of described elaterometer, contact type intermediate relay KM, indicator light HL connect to form low pressure warning instruction loop; Described contact type intermediate relay KM has multipair contact, wherein the first normally opened contact is connected with described indicator light HL, second normally opened contact is used for connecting with the tripping coil TQ in the trip(ping) circuit of Inflatable ring main unit, and the 3rd, the 4th normally-closed contact is used for being connected with the locked loop of Inflatable ring main unit.
Further, described power cut off delay time relay KT comprises the first power cut off delay time relay KT1 and the second power cut off delay time relay KT2; The coil of described relay K A is connected with a contact MD of described elaterometer; The coils connected in series of the normally opened contact of described relay K A and the normally-closed contact of the second power cut off delay time relay KT2 and the first power cut off delay time relay KT1; The normally opened contact of described first power cut off delay time relay KT1 is connected with the coil of the second power cut off delay time relay KT2 and buzzer BZ; The coil of described contact type intermediate relay KM is connected with another contact MD of described elaterometer; Described each series arm is parallel with one another.
Further, described gas density counts SF6 elaterometer.
Further, described contact type intermediate relay KM also comprises the 5th normally opened contact, for depression signal is accessed in peripheral relevant device.
Further, the circuit breaker Q F controlling whole installation's power source switch is also comprised.
A kind of Inflatable ring main unit, its electric loop comprises trip(ping) circuit and locked loop, and also comprise above-mentioned low pressure warning/locking device, described elaterometer is placed in Inflatable ring main unit; Second normally opened contact of described contact type intermediate relay KM is connected with the tripping coil TQ in trip(ping) circuit, and the 3rd, the 4th normally-closed contact is connected with locked loop.
Compared with prior art, the utility model has following beneficial effect:
The low pressure warning/locking device of Inflatable ring main unit of the present utility model is low to when arranging below atmospheric pressure value at Inflatable ring main unit air pressure, and indicator light HL is bright, and buzzer intermittence is rung, carry out alarm, simultaneously electric loop locking also trips, and available protecting Inflatable ring main unit, is suitable for applying; Also reserve depression signal switching value in addition, depression signal can be transferred on peripheral relevant device by this switching value.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the low pressure warning/locking device of a kind of Inflatable ring main unit of the present utility model;
Wherein: QF-circuit breaker (small-sized), KA-relay, KM-contact type intermediate relay, KT1, KT2-power cut off delay time relay, the contact of MD-elaterometer, TQ-tripping coil, BZ-buzzer, HL-indicator light, in figure, all switching values are nature.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the low pressure warning/locking device of Inflatable ring main unit of the present utility model, comprise: elaterometer, relay K A, power cut off delay time relay KT, buzzer BZ, contact type intermediate relay KM, indicator light HL, wherein, the contact MD of described elaterometer has two.
Contact MD, a relay K A, power cut off delay time relay KT, the buzzer BZ of elaterometer connect to form low pressure alarm sound loop; Wherein, power cut off delay time relay KT comprises the first power cut off delay time relay KT1 and the second power cut off delay time relay KT2; The coil of relay K A is connected with a contact MD of above-mentioned elaterometer; The coils connected in series of the normally opened contact of relay K A and the normally-closed contact of the second power cut off delay time relay KT2 and the first power cut off delay time relay KT1; The normally opened contact of the first power cut off delay time relay KT1 is connected with the coil of the second power cut off delay time relay KT2 and buzzer BZ; By above-mentioned setting, the intermittent sounding of buzzer BZ when can realize low pressure.
Another contact MD of elaterometer, contact type intermediate relay KM, indicator light HL connect to form low pressure warning instruction loop; Wherein, the coil of contact type intermediate relay KM is connected with another contact MD of above-mentioned elaterometer, and contact type intermediate relay KM has multipair contact, and the first normally opened contact is connected with indicator light HL, by above-mentioned setting, when can realize low pressure, indicator light HL is bright.
Above-mentioned each series arm is parallel with one another.
The electric loop of Inflatable ring main unit comprises trip(ping) circuit and locked loop, and trip(ping) circuit comprises tripping coil TQ, and second normally opened contact of contact type intermediate relay KM is connected with the tripping coil TQ in the trip(ping) circuit of Inflatable ring main unit; Three, the 4th normally-closed contact is connected with the locked loop of Inflatable ring main unit.By above-mentioned setting, the tripping operation locking of the electric loop of Inflatable ring main unit during low pressure can be realized and can double insurance be realized.
Contact type intermediate relay KM can also comprise the 5th normally opened contact, for depression signal is accessed in peripheral relevant device.
In addition, whole low pressure warning/locking device also comprises the circuit breaker Q F controlling whole installation's power source switch.
Gas conventional in above-mentioned Inflatable ring main unit is SF6, and accordingly, SF6 elaterometer selected by elaterometer.
During normal power transmission, close circuit breaker Q F, elaterometer is placed in Inflatable ring main unit, the contact MD of elaterometer, nature is normally off, when being filled with SF6 gas and reaching more than set point, contact action, now the contact MD of elaterometer is in off-state, normally closed becoming often opens, when Inflatable ring main unit air pressure is low to when arranging below atmospheric pressure value, the contact MD of elaterometer recovers normally off, line conduction, now indicator light HL is bright, buzzer BZ sends intermittent sound, the electric loop locking of Inflatable ring main unit and the tripping operation of tripping coil TQ dropout loop, if in depression signal switching value access relevant device, when air pressure is low to when arranging below atmospheric pressure value, equipment can receive depression signal, achieve depression signal transmission.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. the low pressure warning/locking device of an Inflatable ring main unit, it is characterized in that, comprise: elaterometer, relay K A, power cut off delay time relay KT, buzzer BZ, contact type intermediate relay KM, indicator light HL, wherein, the contact MD of described elaterometer has two;
Contact MD, a relay K A, power cut off delay time relay KT, the buzzer BZ of described elaterometer connect to form low pressure alarm sound loop; Another contact MD of described elaterometer, contact type intermediate relay KM, indicator light HL connect to form low pressure warning instruction loop;
Described contact type intermediate relay KM has multipair contact, wherein the first normally opened contact is connected with described indicator light HL, second normally opened contact is used for connecting with the tripping coil TQ in the trip(ping) circuit of Inflatable ring main unit, and the 3rd, the 4th normally-closed contact is used for being connected with the locked loop of Inflatable ring main unit.
2. the low pressure warning/locking device of Inflatable ring main unit according to claim 1, is characterized in that, described power cut off delay time relay KT comprises the first power cut off delay time relay KT1 and the second power cut off delay time relay KT2; The coil of described relay K A is connected with a contact MD of described elaterometer; The coils connected in series of the normally opened contact of described relay K A and the normally-closed contact of the second power cut off delay time relay KT2 and the first power cut off delay time relay KT1; The normally opened contact of described first power cut off delay time relay KT1 is connected with the coil of the second power cut off delay time relay KT2 and buzzer BZ;
The coil of described contact type intermediate relay KM is connected with another contact MD of described elaterometer;
Described each series arm is parallel with one another.
3. the low pressure warning/locking device of Inflatable ring main unit according to claim 1, is characterized in that, described gas density counts SF6 elaterometer.
4. the low pressure warning/locking device of Inflatable ring main unit according to claim 1, is characterized in that, described contact type intermediate relay KM also comprises the 5th normally opened contact, for depression signal is accessed in peripheral relevant device.
5. the low pressure warning/locking device of the Inflatable ring main unit according to any one of claim 1-4, is characterized in that, also comprises the circuit breaker Q F controlling whole installation's power source switch.
6. an Inflatable ring main unit, its electric loop comprises trip(ping) circuit and locked loop, it is characterized in that, also comprise the low pressure warning/locking device described in any one of claim 1-5, described elaterometer is placed in Inflatable ring main unit; Second normally opened contact of described contact type intermediate relay KM is connected with the tripping coil TQ in trip(ping) circuit, and the 3rd, the 4th normally-closed contact is connected with locked loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382304.9U CN204668823U (en) | 2015-06-04 | 2015-06-04 | A kind of low pressure warning/locking device of Inflatable ring main unit and Inflatable ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382304.9U CN204668823U (en) | 2015-06-04 | 2015-06-04 | A kind of low pressure warning/locking device of Inflatable ring main unit and Inflatable ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204668823U true CN204668823U (en) | 2015-09-23 |
Family
ID=54139170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520382304.9U Active CN204668823U (en) | 2015-06-04 | 2015-06-04 | A kind of low pressure warning/locking device of Inflatable ring main unit and Inflatable ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204668823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882817A (en) * | 2015-06-04 | 2015-09-02 | 北京昊创瑞通电气设备有限公司 | Low-pressure alarm locking device of inflatable ring main unit and inflatable ring main unit |
-
2015
- 2015-06-04 CN CN201520382304.9U patent/CN204668823U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882817A (en) * | 2015-06-04 | 2015-09-02 | 北京昊创瑞通电气设备有限公司 | Low-pressure alarm locking device of inflatable ring main unit and inflatable ring main unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105445611A (en) | Fault arc detection method and device | |
| WO2010089338A3 (en) | Short-circuit protection device and switching system having such short-circuit protection devices | |
| CN104701822A (en) | Power circuit protection method | |
| CN103323743A (en) | Method for looking up ground faults by means of integrated automation transformer substation background machine | |
| CN204668823U (en) | A kind of low pressure warning/locking device of Inflatable ring main unit and Inflatable ring main unit | |
| Wang et al. | Conceptual design of a liquid-nitrogen-insulated metal-enclosed switchgear | |
| GB869351A (en) | Selective trip arrangement utilizing circuit breakers which are coordinated with current limiting fuses | |
| WO2020026163A3 (en) | A method and a device for supervision of a voltage transformer | |
| CN204012224U (en) | The anti-jump protection of GIS breaker energy storage motor loop | |
| CN204883259U (en) | Box-type substation with monitoring device | |
| CN108964020A (en) | A kind of physical isolation type lightning-protection system and physical isolation type lightening arresting method | |
| CN104779597A (en) | Electric system current limiting protecting equipment and protecting method thereof | |
| CN104882817A (en) | Low-pressure alarm locking device of inflatable ring main unit and inflatable ring main unit | |
| CN106410741B (en) | A kind of omnipotent breaker from power transmission device | |
| CN211296174U (en) | SF6 looped netowrk cabinet atmospheric pressure anomaly automatic tripping control circuit | |
| CN203911331U (en) | Gas pressure alarm and locking device for high-voltage switchgear | |
| CN205911828U (en) | Circuit breaker control circuit | |
| CN202351363U (en) | Novel ground fault warning device | |
| CN204886117U (en) | Operation circuit of circuit breaker | |
| CN220673386U (en) | Gas pressure low-jump upper-level switch loop of gas ring main unit of energy storage system | |
| CN104835692A (en) | Breaker operation mechanism control device and operation box thereof | |
| CN204794071U (en) | Digital arc extinction cabinet | |
| CN105374645B (en) | A kind of hands injured secondary circuit | |
| CN203984004U (en) | Small user's power plant load Union Switch Device | |
| CN109038595A (en) | Low-capacity/low-impedance flexible switching system and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100068 609, building 3, 16 South Third Ring Road West, Fengtai District, Beijing Patentee after: Beijing haochuang Ruitong Electrical Equipment Co.,Ltd. Address before: No.16, South Third Ring Road West, Fengtai District, Beijing Patentee before: BEIJING HCRT ELECTRICAL EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |