CN204067186U - Three pin tongue tube type two-way tripping operation node Buchholz relays - Google Patents
Three pin tongue tube type two-way tripping operation node Buchholz relays Download PDFInfo
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- CN204067186U CN204067186U CN201420392364.4U CN201420392364U CN204067186U CN 204067186 U CN204067186 U CN 204067186U CN 201420392364 U CN201420392364 U CN 201420392364U CN 204067186 U CN204067186 U CN 204067186U
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- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims description 34
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- 238000005538 encapsulation Methods 0.000 claims description 3
- 230000004224 protection Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 description 7
- 230000005415 magnetization Effects 0.000 description 5
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a kind of technical field of relay, particularly relates to a kind of three pin tongue tube type two-way tripping operation node Buchholz relays, is applicable to the Buchholz relay on the power equipments such as operating transformer or shunting switch.It comprises tongue tube and float; Grave gas protective device and light gas protecting device is provided with in the housing of Buchholz relay.Be provided with transformer oil in oil stream pipeline in housing, housing is provided with side entrance.The utility model is on the basis of conventional gas relay, use one to have three metal spring leaf contact type tongue tubes as signal output node; effectively can prevent from causing because pin exterior insulation is bad transmit messages alert or trip signal by mistake; be reduced in because of external interference; increase the reliability of protection, can distinguish rapidly due to transformer leakage of oil defect or power transformer interior fault.Have secondary circuit insulativity high, safe and reliable feature, can avoid the misoperation of contact, rationally simple for structure, successful, is beneficial to and applies.
Description
Technical field
The utility model relates to a kind of technical field of relay, particularly relates to a kind of three pin tongue tube type two-way tripping operation node Buchholz relays, is applicable to the Buchholz relay on the power equipments such as operating transformer or shunting switch.
Background technology
Buchholz relay has another name called Buchholz relay, is the gas and the relay of action that produce when utilizing power transformer interior fault.Its structure is simple, highly sensitive; particularly when turn-to-turn short circuit occurs in the place that the Transformer Winding number of turn is little; internal fault loop current is very large; local may be caused seriously overheated; but show less at the curent change of outside lead; even if at this moment high-sensitive differential protection all can not ensure action message, but Buchholz relay can react the fault of this type delicately.Therefore, Buchholz relay remains one of requisite main protection equipment of various oil-filled transformer.
Relay is when normally running, and its inside is full of transformer oil, and open cup is immersed in oil, is in floating position, and dry-reed contact disconnects; The flowing of baffle plate with transformer oil under the traction of sole mass and spring parts a little, and its dry-reed contact is also disconnect.When inside transformer minor failure, rise owing to decomposing a small amount of gas produced, force pasta in relay to decline thereupon, cause alleged oil in open cup to rise with cup under the lever force of weight, and then the magnet causing its both sides connects dry-reed contact, sends light gas fault-signal after action.When inside transformer generation catastrophe failure, then produce strong methane gas, tank pressure is instantaneous uprushes, and produces very large oil and flows to the impact of conservator direction, because of oil stream impact baffle plate, and overcome the resistance of spring, band moving magnet moves to dry-reed contact direction, dry-reed contact is closed, connects trip(ping) circuit, make circuit breaker trip, Here it is so-called " grave gas ".
Operating transformer oil and on load tap changer, can be oxidized, decompose and separate out solid free carbon under high temperature and arcing, larger on the electric property impact of oil.There is direct voltage, very easily mechanical impurities and free carbon in adsorbed oil because tongue tube lead terminal root insulate exposed, form conduction covering along with the time increases, greatly reduce the insulation property of Buchholz relay secondary circuit.The reduction of Buchholz relay terminal insulative intensity very easily causes the false tripping main transformer because of tongue tube lead-out wire short circuit, brings very big hidden danger to the reliable and secure stable operation of electrical network.
Existing Buchholz relay, when grave gas action, can not be distinguished the transformer tripping operation because transformer leakage of oil defect or power transformer interior fault cause, like this to when grave gas need be protected reconfiguration signal by some particular case, can lose two kinds of protections simultaneously.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of three pin tongue tube type two-way tripping operation node Buchholz relays.Its objective is and provide one reliably can provide warning or trip signal accurately, and its structure is simple, safe and reliable, and insulation decline or the grounding phenomenon of binding post can not be caused compared to traditional Buchholz relay because of the accumulation of its inner free charcoal, two kinds of grave gas signals can be provided to distinguish the relay of different fault types simultaneously.
The utility model for the adopted technical scheme that achieves the above object is:
Three pin tongue tube type two-way tripping operation node Buchholz relays, comprise tongue tube and float; In the housing of Buchholz relay, be provided with grave gas protective device and light gas protecting device, be provided with transformer oil in the oil stream pipeline in housing, housing is provided with side entrance; Described grave gas protective device comprises the framework be installed in Buchholz relay housing and the lower float being installed on framework side, and lower float is connected with framework by floating ball rod, and the floating ball rod of lower float is connected with magnet b; At the opposite side of framework, three groups of tongue tubes are installed; Be provided with oil stream baffle plate in oil stream pipeline, oil stream baffle plate is provided with magnet c, and baffle plate and lower float are fixed in same rotating shaft;
Described light gas protecting device comprises the tongue tube c being arranged at framework top and the upper float being arranged on framework side; upper float to be connected with framework by floating ball rod and can to rotate up and down; described floating ball rod is connected with magnet a, and upper float rotation can be with moving magnet a together to rotate.
Three groups of described tongue tubes comprise tongue tube c, tongue tube a and tongue tube b, and tongue tube c is connected to framework top, and tongue tube a is connected in the middle part of framework, and tongue tube b is connected to framework bottom.
Described magnet a is positioned at above tongue tube c side, and magnet b is positioned at above described tongue tube b side.
The structure of described tongue tube a, tongue tube b and tongue tube c is three pin point type tongue tubes.
Described baffle plate and lower float are fixed in same rotating shaft, but do not form interlock, and lower float and baffle plate drive respective magnet action respectively, by the converted output signal of respective three pin tongue tube states.
Normally-closed contact in the tongue tube cavity of three groups of described tongue tubes communicates with common and forms normally closed node; If permanent magnet is close, then the normally-closed contact communicated with common disconnects, and now normally opened contact communicates with common and forms closed-loop path.
Three contacts on three groups of described tongue tubes are: common, normally opened contact are located at the side of glass tongue tube cavity, at the parallel encapsulation normally-closed contact of the opposite side of glass tongue tube cavity, common communicates with normally-closed contact and forms normally closed node, if permanent magnet is close, the normally-closed contact then communicated with common and common disconnect, and original that normally opened contact obstructed with common communicates with common; Magnet leaves, then return to again and do not have magnet close to front state.
Advantage of the present utility model and beneficial effect:
The utility model is a kind of Buchholz relay; it is on the basis of conventional gas relay, use one to have three metal spring leaf contact type tongue tubes as signal output node; like this when oil stream baffle plate drive permanent magnet rotate and close to tongue tube time; tongue tube is disconnected by normally closed pin and pair of pins connection in addition; effectively can prevent from causing because pin exterior insulation is bad transmit messages alert or trip signal by mistake; be reduced in because of external interference; causing mistaking signal during as shaken, adding the reliability of protection.Simultaneously; baffle plate and lower float are fixed on same fulcrum; but do not form interaction relation each other; lower float and baffle plate drive respective magnet action respectively; like this when there being grave gas signal to send, can distinguish rapidly due to transformer leakage of oil defect or power transformer interior fault, in addition; when grave gas need be protected reconfiguration signal by some particular case, two kinds of protections can not be lost simultaneously.
During when oil stream baffle plate drive permanent magnet rotation close to tongue tube, tongue tube is disconnected by normally closed pin and pair of pins connection in addition, effectively can prevent from causing because pin exterior insulation is bad transmit messages alert or trip signal so by mistake; Because of external interference, as caused wrong report to report to the police or trip signal during vibrations, add the reliability of protection; When there being grave gas signal to send, can distinguish rapidly due to transformer leakage of oil defect or power transformer interior fault.
It is high that the three pin point type tongue tubes used in the utility model have secondary circuit insulativity, and the feature that during use, security reliability is high, can avoid the misoperation of contact, it is rationally simple for structure, and successful is beneficial to and applies.
Below in conjunction with the drawings and specific embodiments, to the utility model further detailed description in addition.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of three pin tongue tubes in the utility model.
In figure: housing 1, transformer oil 2, upper float 3, magnet a4, tongue tube a5, lower float 6, baffle plate 7, oil stream 8, oil stream pipeline 9, side entrance 10, gas 11, tongue tube cavity 12, common 13, normally-closed contact 14, normally opened contact 15, magnet c16, magnet b17, tongue tube b18, tongue tube c19, framework 20.
Embodiment
The utility model is a kind of three pin tongue tube type two-way tripping operation node Buchholz relays, as shown in Figure 1, comprises the formations such as housing 1, upper cover, upper float 3, lower float 6, baffle plate 7, tongue tube and magnet.Grave gas protective device and light gas protecting device are installed in the housing 1 of Buchholz relay.Be full of transformer oil 2 in oil stream pipeline 9 in housing 1, housing 1 is provided with side entrance 10.
Described grave gas protective device comprises the framework 20 be installed in Buchholz relay housing 1 and the lower float 6 being installed on framework 20 side; lower float 6 to be connected with framework 20 by floating ball rod and can to rotate up and down; the floating ball rod of lower float 6 is provided with magnet b17; magnet b17 is positioned at above described tongue tube b18 side, and the rotation of lower float 6 can be with moving magnet b17 together to rotate.At the opposite side of framework 20, three groups of tongue tubes are installed, comprise be arranged on framework 20 top tongue tube c19, be arranged on the tongue tube a5 in the middle part of framework 20 and be arranged on the tongue tube b18 of framework 20 bottom, the structure of described tongue tube a5, tongue tube b18 and tongue tube c19 is three pin point type tongue tubes.Described grave gas protective device also comprises the oil stream baffle plate 7 being positioned at oil stream pipeline 9 medium position; oil stream baffle plate 7 is provided with magnet c16; baffle plate 7 and lower float 6 are fixed in same rotating shaft; but do not form interlock; lower float 6 and baffle plate 7 drive respective magnet action respectively, by the converted output signal of respective three pin tongue tube states.
Described light gas protecting device comprises the tongue tube c19 being arranged at framework top and the upper float 3 being arranged on framework 20 side; upper float 3 to be connected with framework 20 by floating ball rod and can to rotate up and down; described floating ball rod is provided with magnet a4; magnet a4 is positioned at above described tongue tube c19 side, and the rotation of upper float 3 can be with moving magnet a4 together to rotate.
When the utility model is implemented, in housing 1, be full of transformer oil 2, when power transformer interior fault produces a small amount of gas, gas 11 is trapped in housing 1 top after relay transformer side entrance 10 gas coming through relay.When gas build is more, upper float 3 declines, and drives the magnet a4 being fixed on float 3 floating ball rod to decline simultaneously, and when dropping to a certain degree, magnet a4 causes tongue tube c19 action by electromagnetic force, makes transformer signal alarm.
When transformer leaks, oil level is caused to decline, transformer oil 2 is run off from relay conservator side entrance 10 inflow transformer, upper float 3 declines and reaches its position of adjusting, upper float 3 can drive the magnet a4 action be fixed on floating ball rod, magnet a4 makes tongue tube a5 action by magnetization, makes transformer action in alarm signal.
When transformer oil 2 seriously runs off, in relay, be full of air, lower float 6 is declined, drive the magnet b17 be fixed on lower float 6 floating ball rod to decline simultaneously, when dropping to a certain degree, magnet b17 causes tongue tube b18 action by electromagnetic force, makes transformer action in tripping operation.
When power transformer interior fault is serious, transformer oil 2 fluctuates comparatively large, makes transformer oil 2 enter Buchholz relay and impact baffle plate 7 from Buchholz relay transformer side entrance 10, when reaching certain flow rate, and baffle plate action.Baffle plate 7 and lower float 6 are fixed on same fulcrum jointly, and the action of baffle plate 7 can drive the magnet c16 action be fixed on floating ball rod, and when acquiring a certain degree, magnet c16 causes tongue tube a5 action by electromagnetic force, makes transformer action in tripping operation.
As shown in Figure 2, Fig. 2 is the structural representation of three pin tongue tubes in the utility model.Normally-closed contact 14 in the tongue tube cavity 12 of described three groups of tongue tubes communicates with common 13 and forms normally closed node.If permanent magnet is close, then the normally-closed contact 14 communicated with common 13 disconnects, and now normally opened contact 15 communicates with common 13 and forms closed-loop path.
Principle of the present utility model is as follows:
Gas gathers: when local overheating causes liquid and solid insulation to decompose gradually and generate gas.Upper float 3 falls and reaches its position of adjusting, and upper float 3 can be with moving magnet a4 action, and magnet a4 makes tongue tube c19 action by magnetization, makes transformer action in alarm signal.
Iknsulating liquid runs off: when seepage causes transformer oil 2 to run off, and upper float 3 declines and reaches its position of adjusting, and upper float 3 can be with moving magnet a4 action, and magnet a4 makes tongue tube c19 action by magnetization, makes transformer action in alarm signal; When liquid level continue decline cause lower float 6 position decline until reach its adjust position time, moving magnet c17 action is with by lower float 6, and magnet c17 makes tongue tube c18 action by magnetization, makes transformer action in trip signal.
Iknsulating liquid shoves: inner high-energy discharge produces decomposition gas even strong fast.The brute force that consequent pressure wave causes transformer fluid oil 2 to rush at oil conservator is shoved, brute force is shoved and is rushed at the oily baffle plate 7 flowed in pipeline 9, therefore the action of baffle plate 7 can be with moving magnet c16 action, and magnet c16 makes tongue tube b5 action by magnetization, makes transformer action in trip signal.
As preferably, three groups of tongue tubes described in the utility model are that one has three metal spring leaf contact type tongue tubes, three contacts on it are: common 13, normally opened contact 15 are located at the side of glass tongue tube cavity 12, at the parallel encapsulation normally-closed contact 14 of the opposite side of glass tongue tube cavity 12, common 13 communicates with normally-closed contact 14 and forms normally closed node, if permanent magnet is close, the normally-closed contact 14 and the common 13 that then communicate with common 13 disconnect, and the original normally opened contact 15 obstructed with common 13 communicates with common 13.Magnet leaves, then return to again and do not have magnet close to front state.
As preferably, described baffle plate 7 is fixed on same fulcrum with lower float 6, but does not form interaction relation each other, and the action of baffle plate can not drive the action of lower float, and vice versa.
Claims (7)
1. three pin tongue tube type two-way tripping operation node Buchholz relays, comprise tongue tube and float, it is characterized in that: in the housing (1) of Buchholz relay, grave gas protective device and light gas protecting device are installed, oil stream pipeline (9) in housing (1) is inner is provided with transformer oil (2), and housing (1) is provided with side entrance (10);
Described grave gas protective device comprises the framework (20) be installed in Buchholz relay housing (1) and the lower float (6) being installed on framework (20) side, lower float (6) is connected with framework (20) by floating ball rod, and the floating ball rod of lower float (6) is connected with magnet b(17); At the opposite side of framework (20), three groups of tongue tubes are installed; Be provided with oil stream baffle plate (7) in oil stream pipeline (9), oil stream baffle plate (7) is provided with magnet c(16), baffle plate (7) and lower float (6) are fixed in same rotating shaft;
Described light gas protecting device comprises the tongue tube c(19 being arranged at framework top) and be arranged on the upper float (3) of framework (20) side; upper float (3) to be connected with framework (20) by floating ball rod and can to rotate up and down; described floating ball rod is connected with magnet a(4), upper float (3) rotation can be with moving magnet a(4) together rotate.
2. three pin tongue tube type two-way tripping operation node Buchholz relays according to claim 1, it is characterized in that: three groups of described tongue tubes comprise tongue tube c(19), tongue tube a(5) and tongue tube b(18), tongue tube c(19) be connected to framework (20) top, tongue tube a(5) be connected to framework (20) middle part, tongue tube b(18) be connected to framework (20) bottom.
3. three pin tongue tube type two-ways tripping operation node Buchholz relays according to claim 1, is characterized in that: described magnet a(4) be positioned at tongue tube c(19) above side, magnet b(17) be positioned at described tongue tube b(18) above side.
4. three pin tongue tube type two-ways tripping operation node Buchholz relays according to claim 1, is characterized in that: described tongue tube a(5), tongue tube b(18) and tongue tube c(19) structure be three pin point type tongue tubes.
5. three pin tongue tube type two-way tripping operation node Buchholz relays according to claim 1, it is characterized in that: described baffle plate (7) and lower float (6) are fixed in same rotating shaft, but do not form interlock, lower float (6) and baffle plate (7) drive respective magnet action respectively, by the converted output signal of respective three pin tongue tube states.
6. three pin tongue tube type two-way tripping operation node Buchholz relays according to claim 1, is characterized in that: the normally-closed contact (14) in the tongue tube cavity (12) of three groups of described tongue tubes communicates with common (13) and forms normally closed node; If permanent magnet is close, then the normally-closed contact (14) communicated with common (13) disconnects, and now normally opened contact (15) communicates with common (13) and forms closed-loop path.
7. three pin tongue tube type two-way tripping operation node Buchholz relays according to claim 1, it is characterized in that: three contacts on three groups of described tongue tubes are: common (13), normally opened contact (15) is located at the side of glass tongue tube cavity (12), the parallel encapsulation normally-closed contact (14) of the opposite side of glass tongue tube cavity (12), common (13) communicates with normally-closed contact (14) and forms normally closed node, if permanent magnet is close, the normally-closed contact (14) then communicated with common (13) and common (13) disconnect, and original that normally opened contact (15) obstructed with common (13) communicates with common (13), magnet leaves, then return to again and do not have magnet close to front state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420392364.4U CN204067186U (en) | 2014-07-16 | 2014-07-16 | Three pin tongue tube type two-way tripping operation node Buchholz relays |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420392364.4U CN204067186U (en) | 2014-07-16 | 2014-07-16 | Three pin tongue tube type two-way tripping operation node Buchholz relays |
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| CN204067186U true CN204067186U (en) | 2014-12-31 |
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| CN201420392364.4U Active CN204067186U (en) | 2014-07-16 | 2014-07-16 | Three pin tongue tube type two-way tripping operation node Buchholz relays |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134576A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Three-pin reed switch type double-circuit trip node gas relay |
| CN110233442A (en) * | 2019-05-30 | 2019-09-13 | 武汉明心电力科技有限公司 | A method of based on life cycle management Substation Design |
| CN110794294A (en) * | 2019-11-02 | 2020-02-14 | 国网辽宁省电力有限公司电力科学研究院 | Device and method for detecting simulation action of double-float gas relay of 220kV transformer |
-
2014
- 2014-07-16 CN CN201420392364.4U patent/CN204067186U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134576A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Three-pin reed switch type double-circuit trip node gas relay |
| CN110233442A (en) * | 2019-05-30 | 2019-09-13 | 武汉明心电力科技有限公司 | A method of based on life cycle management Substation Design |
| CN110794294A (en) * | 2019-11-02 | 2020-02-14 | 国网辽宁省电力有限公司电力科学研究院 | Device and method for detecting simulation action of double-float gas relay of 220kV transformer |
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