CN104299845A - Gas density relay capable of being verified directly without disassembly - Google Patents
Gas density relay capable of being verified directly without disassembly Download PDFInfo
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- CN104299845A CN104299845A CN201410562562.5A CN201410562562A CN104299845A CN 104299845 A CN104299845 A CN 104299845A CN 201410562562 A CN201410562562 A CN 201410562562A CN 104299845 A CN104299845 A CN 104299845A
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- self
- gas density
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- airway
- spool
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/36—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by curled flexible tube, e.g. Bourdon tube
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/28—Compensation for variation of ambient pressure or temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/32—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by bellows
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/024—Avoid unwanted operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/052—Controlling, signalling or testing correct functioning of a switch
Abstract
The invention discloses a gas density relay capable of being verified directly without disassembly. The gas density relay comprises a detecting mechanism, a multi-way joint base and a transition joint connecting mechanism. The detecting mechanism is connected with the transition joint connecting mechanism through the multi-way joint base, and the multi-way joint base is further provided with a first interface matched with an equipment attachment joint. According to the gas density relay capable of being verified directly without disassembly, air inflation can be conducted on a sulfur hexafluoride electrical switch at the same position, an operator can conduct direct verification on the density relay without disassembling the density relay and conducting opening and closing operations on an air path additionally, sealing of the sulfur hexafluoride electrical switch can be guaranteed, and the function of preventing verification misoperation is achieved.
Description
Technical field
The present invention relates to technical field of electric power, be specifically related to a kind ofly need not dismantle the gas density relay that just can directly verify.
Background technology
Sulfur hexafluoride gas density relay (containing density meter, Pressure gauge) is used to the change of the sulfur hexafluoride gas density detected in sulphur hexafluoride electric switch, and its performance quality directly has influence on the reliable and secure operation of sulphur hexafluoride electric switch.Be installed on on-the-spot sulfur hexafluoride gas density relay because of infrequently action, often there is the phenomenon of the dumb or poor contact of contacts of action in after date through one section time, the temperature-compensating performance that also there will be had is deteriorated, and easily causes sulfur hexafluoride gas density relay misoperation when variation of ambient temperature.Therefore testing regulations regulation: each sulphur hexafluoride electric switch applying unit should regularly verify sulfur hexafluoride gas density relay.From practical operation situation, carrying out periodic check to the sulfur hexafluoride gas density relay at scene is prevent trouble before it happens, and ensures one of necessary means of power equipment safety reliability service.Fig. 1 is the structural representation of the gas density relay of prior art, and as shown in Figure 1, the gas density relay of prior art adopts testing agency 1 to be directly communicated with equipment connection joint 4 and detects equipment.During field-checking, the plinth of the gas density relay of sulphur hexafluoride electric switch is the type of attachment adopting non-return valve.Current verification or the density monitor changing this type of attachment just can only unload three-way connection seat, and it and Switch main body are departed from, that is: make non-return valve and non-return valve separately, then start verification or change relay.Due on sulphur hexafluoride electric switch because of the non-return valve that non-return valve is self-closed, therefore can not leak gas.But due to the risk damaging sealing ring can be there is in unloading process, the risk of gas leakage therefore still can be there is.
Summary of the invention
The invention provides and a kind ofly need not dismantle the gas density relay that just can directly verify, for solving the problem need not dismantled gas density relay and just can directly carry out verifying.
Provided by the inventionly need not dismantle the gas density relay that just can directly verify, comprise: testing agency, multiple-pass joint seat, transition joint bindiny mechanism; Described testing agency connects described transition joint bindiny mechanism by described multiple-pass joint seat, and described multiple-pass joint seat is also provided with the first interface matched with equipment connection joint;
Described transition joint bindiny mechanism comprises: valve seat, Self-sealing valve device and closeouts; Described valve seat is provided with relay airway and switchgear airway, and described Self-sealing valve device is provided with Self-sealing valve airway, and described relay airway, described switchgear airway are connected with described Self-sealing valve airway; Described valve seat is installed on the side of the self-styled valve pocket of described Self-sealing valve device, and described closeouts is removably installed in the opposite side of described self-styled valve pocket and the opposite side of described self-styled valve pocket is provided with and inflates transition joint or verify the second interface that transition joint matches; The inner chamber of described self-styled valve pocket is provided with the self-styled spool that can move to open vertically or close described Self-sealing valve airway, the side that described self-styled valve pocket is connected with described valve seat is provided with spool guide, be provided with the first spring between described spool guide and described self-styled spool, described self-styled spool is provided with the break valve be oppositely arranged with described switchgear airway or the ball valve matched with the oral area of described switchgear airway.
Further, described multiple-pass joint seat and described transition joint bindiny mechanism are structure as a whole.
Further, signal generator and pressure detector is provided with in described testing agency; Described signal generator comprises: sensitive switch or magnetic help formula electric contact; Described pressure detector comprises: Baden's pipe or bellows.
Further, described break valve is provided with cut-off spool integrated with described self-styled spool.
Further, described cut-off spool is provided with cut-off seal, and described cut-off seal comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described cut-off spool.
Further, the second spring is provided with between the oral area of described break valve and described switchgear airway.
Further, described self-styled spool is provided with self-styled seal, and described self-styled seal comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described self-styled spool.
Further, be provided with shutoff seal between described closeouts and described self-styled valve pocket, described shutoff seal comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described self-styled spool.
Further, the self-locking connection mechanism matched with described inflation transition joint or described verification transition joint is also provided with in described Self-sealing valve device.
Further, described multiple-pass joint seat and described equipment connection joint are structure as a whole.
Further, described transition joint bindiny mechanism is fixed in described testing agency.
Further, described multiple-pass joint seat or described transition joint bindiny mechanism locate the transducer connector that is also provided with for connecting Gas Density Sensor or the micro-water sensor of gas.
The invention provides and a kind ofly need not dismantle the gas density relay that just can directly verify, can not only inflate sulphur hexafluoride electric switch at same position, operating personnel can also be made need not to dismantle density monitor and do not need additionally to carry out the opening and closing operations of air flue, just directly can verify density monitor, and the sealing of sulphur hexafluoride electric switch can be guaranteed, there is the function preventing from verifying misoperation.In addition, the innovation of its most worthy is: the method overcoming existing employing valve-type joint realizes the high cost not dismantling verification, farthest saves the use of material, has the huge value of environmental protection beyond doubt, has again economic worth and safe value simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings;
Fig. 1 is the structural representation of the gas density relay of prior art;
Fig. 2 be the gas density relay of the embodiment of the present invention face partial cutaway schematic;
Fig. 3 is the perspective view of the gas density relay of the embodiment of the present invention;
Fig. 4 be the transition joint bindiny mechanism of the embodiment of the present invention face generalized section;
Fig. 5 is the structural representation of the gas density relay of the external inflation transition joint of the embodiment of the present invention;
Fig. 6 is the structural representation of the gas density relay of the external verification transition joint of the embodiment of the present invention;
Fig. 7 is the structural representation of the gas density relay of embodiment of the present invention example A;
Fig. 8 is the structural representation of the gas density relay of embodiment of the present invention example B;
Fig. 9 is the structural representation of the gas density relay of embodiment of the present invention example C;
Figure 10 is the structural representation of the gas density relay of embodiment of the present invention example D;
Figure 11 is the structural representation of the gas density relay of embodiment of the present invention example E;
Figure 12 is the structural representation of the gas density relay with transducer connector of the embodiment of the present invention.
Embodiment:
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 2 be the gas density relay of the embodiment of the present invention face partial cutaway schematic, Fig. 3 is the perspective view of the gas density relay of the embodiment of the present invention, as shown in Figures 2 and 3, the embodiment of the present invention need not dismantle the gas density relay that just can directly verify, comprising: testing agency 1, multiple-pass joint seat 2, transition joint bindiny mechanism 3; Described testing agency 1 connects described transition joint bindiny mechanism 3 by described multiple-pass joint seat 2, and described multiple-pass joint seat 2 is also provided with the first interface matched with equipment connection joint 4.Described multiple-pass joint seat 2 is structure as a whole with described transition joint bindiny mechanism 3, is convenient to dismounting and processing and manufacturing.The gas density relay of embodiment can also comprise: oil-filled type density monitor, without oil type density monitor, air density meter, gas density switch or gas gauge.
Described testing agency 1 comprises housing 11, is located at the pedestal 12 in housing 11, end seat 13, pressure detector 14, temperature compensating element 15, movement 16, pointer 17, dial 18, some signal generators 19.Described signal generator 19 comprises: sensitive switch or magnetic help formula electric contact.Described pressure detector 14 comprises: Baden's pipe or bellows.Wherein, in testing agency 1, based on pressure detector 14 and utilize temperature compensating element 15 (gas of compensating plate or housing inner sealing) to change pressure and temperature revise, reflection sulfur hexafluoride gas density change.Namely at measured medium sulphur hexafluoride (SF
6) gas pressure effect under, owing to there being the effect of temperature compensating element 15, the change of its density value, force value also changes accordingly, forces the end of pressure detector 14 to produce corresponding strain displacement, by means of temperature compensating element 15, pass to movement 16, movement 16 passes to again pointer 17, then tested sulfur hexafluoride gas density value is indicated on dial 18, and output alarm locking contact.Such density monitor just can show sulfur hexafluoride density value.If leaked gas, its density value have dropped, pressure measuring element 14 produces corresponding to bottom offset, by temperature compensating element 15, passes to movement 16, movement 16 passes to again pointer 17, pointer 17 is just walked toward the direction that indicating value is little, can specifically show gas leakage degree, and signal exports, reach the sulfur hexafluoride gas density in the equipment such as monitoring and controlling electric switch, make electric equipment trouble free service.So just complete the function of density monitor function or density meter (or Pressure gauge) display density.
Fig. 4 be the transition joint bindiny mechanism of the embodiment of the present invention face generalized section, as shown in Figure 4, described transition joint bindiny mechanism 3 comprises: valve seat 31, Self-sealing valve device 32 and closeouts 33; Described valve seat 31 is provided with relay airway 311 and switchgear airway 312, and described Self-sealing valve device 32 is provided with Self-sealing valve airway 321, and described relay airway 311, described switchgear airway 312 are connected with described Self-sealing valve airway 321.One end of relay gas circuit connector 6 is communicated with multiple-pass joint seat 2, and the other end of relay gas circuit connector 6 is communicated with relay connector 61, and relay connector 61 corresponds to relay airway 311.One end of switch gas circuit connector 5 is communicated with multiple-pass joint seat 2, the other end coupling cock equipment connection port 51 of switch gas circuit connector 5, and switchgear connector 51 corresponds to switchgear airway 312.Switchgear airway 312 can have one to three (respectively from the A phase in sulphur hexafluoride electric switch, B phase, C phase).Described valve seat 31 is installed on the side of the self-styled valve pocket 322 of described Self-sealing valve device 32, and described closeouts 33 is removably installed in the opposite side of described self-styled valve pocket 322 and the opposite side of described self-styled valve pocket 322 is provided with and inflates transition joint or verify the second interface that transition joint matches.The inner chamber of described self-styled valve pocket 322 is provided with can the self-styled spool 323 of movement vertically, on self-styled spool 323, the side of relative closeouts 33 is provided with flange, flange is close to the inner chamber of self-styled valve pocket 322 to close described Self-sealing valve airway 321, and flange separates the inner chamber of self-styled valve pocket 322 to open described Self-sealing valve airway 321.The side that described self-styled valve pocket 322 is connected with described valve seat 31 is provided with the spool guide 324 of screw thread downlink connection, and spool guide 324 makes self-styled spool 323 in axial direction move.In addition, the spool guide 324 of the inner chamber being threaded in self-styled valve pocket 321 can also be cancelled, but at a Self-sealing valve interface block inner chamber one-body molded spacer ring suitable with the structure of spool guide 324, in a word, the form of Self-sealing valve device 32 can be various, do not repeat one by one at this.Be provided with the first spring 325, first spring 325 between the flange of described spool guide 324 and described self-styled spool 323 to be sleeved on self-styled spool 323.Described self-styled spool 323 is provided with the break valve 326 be oppositely arranged with described switchgear airway 312 or the ball valve matched with the oral area of described switchgear airway 312.Ball valve in this way, can drive ball valve closing switch equipment airway by rotating self-styled spool.Transition joint bindiny mechanism 3 can be set to quick connected mode, increases work efficiency further.
Described break valve 326 is provided with and the integrated cut-off spool of described self-styled spool 323, and described cut-off spool is provided with cut-off seal 3261, and described cut-off seal 3261 comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described cut-off spool.Described self-styled spool 323 is provided with self-styled seal 3231, and described self-styled seal 3231 comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described self-styled spool.Be provided with shutoff seal 3311 between described closeouts 33 and described self-styled valve pocket 322, described shutoff seal 3311 comprises: rubber ring, rubber blanket or O shape circle.Described closeouts 33 comprises capping 331.
The second spring can also be provided with between the oral area of described break valve 326 and described switchgear airway 312.
The operation principle of the gas density relay of the embodiment of the present invention is as follows: when normal operating conditions does not have an external transition joint, as shown in Figure 4, be located at Self-sealing valve device 32 on gas density relay under the effect of the first spring 325, self-styled seal 3231 on self-styled spool 323 and self-styled valve pocket 322 positiver sealing, make gas leak.And end the cut-off seal 3261 on spool 326 with the inner chamber of the Self-sealing valve interface block of valve seat 31 and do not contact, do not block switchgear connector 51, namely switchgear airway 312 does not have blocked, and the gas circuit of switchgear airway 312 communicates with relay airway 311.
Fig. 5 is the structural representation of the gas density relay of the external inflation transition joint of the embodiment of the present invention, as shown in Figure 5, to inflate sulphur hexafluoride electric switch, tonifying Qi or test micro-water, after laying down closeouts 33, inflation transition joint 7 is inserted the inner chamber of self-styled valve pocket 322 from the rear end of self-styled valve pocket 322 and supports in the rear end of self-styled spool 323, self-styled spool 323 is made to move forward a distance S1, thus open self-styled spool 323, the gas circuit of inflation transition joint 7 and switchgear airway 312 is communicated, although now self-styled spool 323 promotion cut-off spool 326 moves, but its limited displacement, cut-off seal 3261 on cut-off spool 326 does not contact with the inner cavity surface of valve seat 31, also do not contact with switchgear airway 312, make switchgear airway 312 mutually unobstructed with the gas circuit of inflation transition joint 7, just can conveniently inflate sulphur hexafluoride electric switch.Wherein, distance S1 need ensure that switchgear connector 51 is not blocked.Position-limit mechanism can also be provided with in self-styled valve pocket 322, when inflation transition joint 7 inserts the inner chamber of self-styled valve pocket 322 from the rear end of self-styled valve pocket 322 and supports in the rear end of self-styled spool 323, self-styled spool 323 is made to move forward a distance S1 and utilize position-limit mechanism spacing, thus open self-styled spool 323, the gas circuit of inflation transition joint 7 and switchgear airway 312 is communicated, now the cut-off seal 3261 ended on spool 326 does not also contact with switchgear airway 312, make switchgear airway 312 mutually unobstructed with the gas circuit of inflation transition joint 7, just can conveniently inflate sulphur hexafluoride electric switch.
Fig. 6 is the structural representation of the gas density relay of the external verification transition joint of the embodiment of the present invention, as shown in Figure 6, to check-up gas density electrical relay, lay down closeouts 33, verification transition joint 8 is inserted the inner chamber of self-styled valve pocket 322 from the rear end of self-styled valve pocket 322 and supports in the rear end of self-styled spool 323, self-styled spool 323 is made to move forward a distance S2, the cut-off seal 3261 ended on spool 326 is contacted with the inner cavity surface of valve seat 31 (Self-sealing valve interface block), switchgear airway 312 is not leaked outside with the gas of sealed switch apparatus airway 312 by shutoff, make verification transition joint 8 communicate with relay airway 311 simultaneously.So just realize dismantling gas density relay, density monitor is directly verified.Under this state same, as testing agency 1 be split independently, the also core component testing agency 1 of replaceable gas density relay.Wherein, distance S2 need ensure that switchgear connector 51 is cut off valve 326 and blocks.
Described transition joint bindiny mechanism 3 can be fixed in described testing agency 1.Fig. 7 is the structural representation of the gas density relay of embodiment of the present invention example A, as shown in Figure 7, described transition joint bindiny mechanism 3 is fixed on the lower right corner of the housing 11 of described testing agency 1, the i.e. below of junction block 1J, one end connectivity device jointing 4 of relay gas circuit connector 6, the other end of relay gas circuit connector 6 is communicated with the relay connector of transition joint bindiny mechanism 3, and relay connector corresponds to relay airway.One end connectivity device jointing 4 of switch gas circuit connector 5, the other end of switch gas circuit connector 5 is communicated with the switchgear connector of transition joint bindiny mechanism 3, switchgear connector corresponds to switchgear airway, and relay gas circuit connector 6 is not directly communicated with at equipment connection joint 4 place with switch gas circuit connector 5.Fig. 8 is the structural representation of the gas density relay of embodiment of the present invention example B, as shown in Figure 8, described transition joint bindiny mechanism 3 is also fixed on the lower right corner of the housing 11 of described testing agency 1, the i.e. below of junction block 1J, and the pedestal 12 of one end communication with detection mechanism 1 of relay gas circuit connector 6, the other end of relay gas circuit connector 6 is communicated with the relay connector of transition joint bindiny mechanism 3, and relay connector corresponds to relay airway.One end connectivity device jointing 4 of switch gas circuit connector 5, the other end of switch gas circuit connector 5 is communicated with the switchgear connector of transition joint bindiny mechanism 3, switchgear connector corresponds to switchgear airway, and relay gas circuit connector 6 is not directly communicated with at equipment connection joint 4 place with switch gas circuit connector 5.Fig. 9 is the structural representation of the gas density relay of embodiment of the present invention example C, as shown in Figure 9, after bottom the housing 11 that described transition joint bindiny mechanism 3 is fixed on described testing agency 1.In a word, described transition joint bindiny mechanism 3 is fixed on position in described testing agency 1, angle and direction is various, as the inside of the housing 11 of testing agency 1 as described in can being fixed on, side, front, bottom or equipment connection joint etc., specifically can flexible design according to actual needs.Or furtherly, described transition joint bindiny mechanism 3 is fixed on position on the housing 11 of described testing agency 1, angle and direction is various, specifically can flexible design according to actual needs.
Described multiple-pass joint seat 2 can be structure as a whole with described equipment connection joint 4, and described transition joint bindiny mechanism 3 can be fixed on described equipment connection joint 4.Figure 10 is the structural representation of the gas density relay of embodiment of the present invention example D, and as shown in Figure 10, described transition joint bindiny mechanism 3 is directly fixed on described equipment connection joint 4.Figure 11 is the structural representation of the gas density relay of embodiment of the present invention example E, and as shown in figure 11, described transition joint bindiny mechanism 3 is fixed on described equipment connection joint 4 by switch gas circuit connector 5 and relay gas circuit connector 6.In addition, described transition joint bindiny mechanism 3 can also be fixed on described electric equipment by switch gas circuit connector 5 and relay gas circuit connector 6.In a word, described transition joint bindiny mechanism 3 is fixed on position on described equipment connection joint 4, angle and direction is various, specifically can flexible design according to actual needs.
In whole like this inflation, School Affairs valve operation process, just need not dismantle and depart from sulfur hexafluoride gas density relay or valve seat, for the operation of electric power overhaul personnel brings convenience, guarantee the safe handling of sulfur hexafluoride electrical equipment.Because density monitor of the present invention does not need the opening and closing operations of additionally carrying out air flue, as long as particularly also external verification transition joint 8 can only be utilized, just can realize directly verifying density monitor.After verification, staff is bound to unload the verification transition joint 8 with connecting tracheae, the Self-sealing valve device 32 of density monitor of the present invention like this because of the first spring or the second spring action just automatically restore to normal operating conditions time, therefore thoroughly prevent misoperation, and the sealing of sulphur hexafluoride electric switch and safety can be guaranteed.
In addition, break valve also can comprise: the checking-valve body of Opposite direction connection in self-styled spool front end, the cut-off seal be located on checking-valve body, be fixed on the spring mountings on valve seat and be located at the cut-off Self-sealing valve that cutoff spring between checking-valve body and spring mountings forms in switchgear airway.
Also be provided with the self-locking connection mechanism matched with described inflation transition joint or described verification transition joint in described Self-sealing valve device 32, spacing rear self-styled spool or break valve are locked.Described multiple-pass joint seat or described transition joint bindiny mechanism locate the transducer connector be also provided with for connecting Gas Density Sensor or the micro-water sensor of gas.Figure 12 is the structural representation of the gas density relay with transducer connector of the embodiment of the present invention, as shown in figure 12, the Self-sealing valve device 32 of transition joint bindiny mechanism is provided with transducer connector, transducer connector connects Gas Density Sensor 9, in addition, transducer connector can also connect the micro-water sensor of gas or gas analyte transducer.The quantity of transducer does not limit in the present invention, depends primarily on the interface quantity of transition joint bindiny mechanism and multiple-pass joint seat.Gas Density Sensor is used for the on-line monitoring of density, and the micro-water sensor of gas is used for the on-line monitoring of micro-water, and gas analyte transducer is used for the on-line monitoring of analyte.
Density monitor of the present invention can also directly with gas density transmitter, Gas Density Sensor, gas micro-water transmitter, the micro-water sensor of gas or transducer connector in a word, and transducer connector can also connect gas density transmitter, Gas Density Sensor, the micro-water sensor of gas or gas analyte transducer.The quantity of transmitter or transducer does not limit in the present invention, gas density transmitter or Gas Density Sensor are used for the on-line monitoring of density, gas micro-water transmitter or the micro-water sensor of gas are used for the on-line monitoring of micro-water, and gas analyte transducer is used for the on-line monitoring of analyte.The telemetering type gas density relay dismantled is exempted from, for intelligent grid construction provides strong technical guarantee and support when so just can realize a kind of can verification.
Gas density relay of the present invention can carry out integrated design, namely testing agency 1 (display and control section) and multiple-pass joint seat 2, transition joint bindiny mechanism 3 can integral structure.Gas density relay of the present invention can also carry out modularized design, namely testing agency 1 (display and control section) can design and become a standalone module, when this module has problem, we can utilize the ways such as external verification transition joint that switchgear airway 312 is not leaked outside with the gas of sealed switch apparatus airway 312 by shutoff, namely the gas circuit with equipment connection is cut off, just can change separately testing agency 1 at the scene, ensure system safety operation.
Gas density relay of the present invention, it has following beneficial effect:
(1) gas density relay of the present invention inflation inlet, micro-water test port, verification mouth and gas Shuttoff Valve mouth be same mouth, namely inflatable interface, micro-water test port are not additionally set, just directly can verify gas density relay the gas circuit that micro-water or shutoff sulphur hexafluoride electric switch were inflated and tested to sulphur hexafluoride electric switch at same position, farthest decrease gas leakage point;
(2) gas density relay of the present invention thoroughly can prevent misoperation, because do not need the opening and closing operations of additionally carrying out air flue, just can realize directly verifying gas density relay, and can guarantee the sealing of sulphur hexafluoride electric switch and safety.In the transition joint bindiny mechanism of this gas density relay, just can realize inflating (testing micro-water), the operation of gas shutoff and verification, need not to reinstall or reset after operation completes Self-sealing valve, thus can ensure that sulphur hexafluoride electric switch is when normally running, the air inlet gas circuit making sulphur hexafluoride electric switch all and the air vent hole of gas density relay are in communicating state, such gas density relay just really can monitor the sulfur hexafluoride gas density of sulphur hexafluoride electric switch, if the sulfur hexafluoride gas in sulphur hexafluoride electric switch is once there occurs leakage, gas density relay will send warning or block signal in time, ensure that the safe operation of electrical network,
(3) gas density relay of the present invention need not arrange and opens and turn off mark, also can guarantee that sulphur hexafluoride electric switch is when normally running, the all air inlet gas circuit of sulphur hexafluoride electric switch communicates with the air vent hole of gas density relay, and such density monitor just really can monitor the sulfur hexafluoride gas density in sulphur hexafluoride electric switch;
(4) density monitor good seal performance of the present invention, coefficient of safety is high, and structure is simple, and volume is little.
In sum, the novelty need not dismantling the gas density relay that just can directly verify of the present invention is obvious, thus can ensure that sulphur hexafluoride electric switch is when normally running, the air inlet gas circuit making sulphur hexafluoride electric switch all and the air vent hole of gas density relay are in communicating state, such gas density relay just really can monitor the sulfur hexafluoride gas density of sulphur hexafluoride electric switch, if the sulfur hexafluoride gas in sulphur hexafluoride electric switch is once there occurs leakage, gas density relay will send warning or block signal in time, ensure that the safe operation of electrical network.Gas density relay of the present invention can adapt to use under the field condition varied, thoroughly can prevent the misoperation of operator simultaneously, ensure the safe operation of electrical network, again can conveniently to sulphur hexafluoride electric switch inflation (or testing micro-water).
In addition, spool guide can be arranged on Self-sealing valve and puts.Self-styled spool is provided with the ball valve matched with switchgear airway.Namely, when not having external transition joint, Self-sealing valve device makes Self-sealing valve airway close and relay airway is communicated with switchgear airway; If after laying down closeouts, one inflation transition joint 7 is inserted the inner chamber of self-styled valve pocket from the rear end of self-styled valve pocket and supports in the rear end of self-styled spool, make self-styled spool move forward a segment distance S1, inflation transition joint is communicated with relay airway and switchgear airway respectively; If after laying down closeouts, verify transition joint 8 by one and insert self-styled valve pocket inner chamber from the rear end of self-styled valve pocket and the rear end being connected to self-styled spool, again verification transition joint is rotated an effective angle α after making self-styled spool move forward a segment distance S2, to make ball valve, switchgear airway and relay airway are cut off, and verification transition joint is communicated with relay airway, realize the verification of density monitor.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (12)
1. need not dismantle the gas density relay that just can directly verify, it is characterized in that, comprise: testing agency, multiple-pass joint seat, transition joint bindiny mechanism; Described testing agency connects described transition joint bindiny mechanism by described multiple-pass joint seat, and described multiple-pass joint seat is also provided with the first interface matched with equipment connection joint;
Described transition joint bindiny mechanism comprises: valve seat, Self-sealing valve device and closeouts; Described valve seat is provided with relay airway and switchgear airway, and described Self-sealing valve device is provided with Self-sealing valve airway, and described relay airway, described switchgear airway are connected with described Self-sealing valve airway; Described valve seat is installed on the side of the self-styled valve pocket of described Self-sealing valve device, and described closeouts is removably installed in the opposite side of described self-styled valve pocket and the opposite side of described self-styled valve pocket is provided with and inflates transition joint or verify the second interface that transition joint matches; The inner chamber of described self-styled valve pocket is provided with the self-styled spool that can move to open vertically or close described Self-sealing valve airway, the side that described self-styled valve pocket is connected with described valve seat is provided with spool guide, be provided with the first spring between described spool guide and described self-styled spool, described self-styled spool is provided with the break valve be oppositely arranged with described switchgear airway or the ball valve matched with the oral area of described switchgear airway.
2. gas density relay according to claim 1, is characterized in that, described multiple-pass joint seat and described transition joint bindiny mechanism are structure as a whole.
3. gas density relay according to claim 1, is characterized in that, is provided with signal generator and pressure detector in described testing agency; Described signal generator comprises: sensitive switch or magnetic help formula electric contact; Described pressure detector comprises: Baden's pipe or bellows.
4. gas density relay according to claim 1, is characterized in that, described break valve is provided with cut-off spool integrated with described self-styled spool.
5. gas density relay according to claim 4, is characterized in that, described cut-off spool is provided with cut-off seal, and described cut-off seal comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described cut-off spool.
6. gas density relay according to claim 1, is characterized in that, is provided with the second spring between the oral area of described break valve and described switchgear airway.
7. gas density relay according to claim 1, is characterized in that, described self-styled spool is provided with self-styled seal, and described self-styled seal comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described self-styled spool.
8. gas density relay according to claim 1, is characterized in that, is provided with shutoff seal between described closeouts and described self-styled valve pocket, and described shutoff seal comprises: rubber ring, rubber blanket or the sulfuration rubber parts on described self-styled spool.
9. gas density relay according to claim 1, is characterized in that, is also provided with the self-locking connection mechanism matched with described inflation transition joint or described verification transition joint in described Self-sealing valve device.
10. gas density relay according to claim 1, is characterized in that, described multiple-pass joint seat and described equipment connection joint are structure as a whole.
11. gas density relays according to claim 1, is characterized in that, described transition joint bindiny mechanism is fixed in described testing agency.
12. gas density relays according to claim 1-11 any one, it is characterized in that, described multiple-pass joint seat or described transition joint bindiny mechanism locate the transducer connector be also provided with for connecting Gas Density Sensor or the micro-water sensor of gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410562562.5A CN104299845B (en) | 2014-10-21 | 2014-10-21 | A kind of gas density relay that does not have to dismounting and just can directly verify |
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| CN201410562562.5A CN104299845B (en) | 2014-10-21 | 2014-10-21 | A kind of gas density relay that does not have to dismounting and just can directly verify |
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| CN108231476A (en) * | 2018-01-12 | 2018-06-29 | 上海乐研电气有限公司 | A kind of gas density relay |
| CN112697341A (en) * | 2020-12-07 | 2021-04-23 | 上海平高天灵开关有限公司 | Inflatable density relay meter |
| CN113790893A (en) * | 2021-07-19 | 2021-12-14 | 江铃汽车股份有限公司 | Rapid checking and verifying system and checking and verifying method for discharge equipment |
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| CN113790893B (en) * | 2021-07-19 | 2023-10-20 | 江铃汽车股份有限公司 | Quick check and verification system and check and verification method for discharge equipment |
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