CN104299845B - A kind of gas density relay that does not have to dismounting and just can directly verify - Google Patents

A kind of gas density relay that does not have to dismounting and just can directly verify Download PDF

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Publication number
CN104299845B
CN104299845B CN201410562562.5A CN201410562562A CN104299845B CN 104299845 B CN104299845 B CN 104299845B CN 201410562562 A CN201410562562 A CN 201410562562A CN 104299845 B CN104299845 B CN 104299845B
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CN
China
Prior art keywords
self
valve
gas density
density relay
transit joint
Prior art date
Application number
CN201410562562.5A
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Chinese (zh)
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CN104299845A (en
Inventor
金海勇
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上海乐研电气有限公司
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Priority to CN201410562562.5A priority Critical patent/CN104299845B/en
Publication of CN104299845A publication Critical patent/CN104299845A/en
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Publication of CN104299845B publication Critical patent/CN104299845B/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00Switches operated by change of a physical condition
    • H01H35/24Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/36Switches 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
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00Switches operated by change of a physical condition
    • H01H35/24Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26Details
    • H01H35/28Compensation for variation of ambient pressure or temperature
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00Switches operated by change of a physical condition
    • H01H35/24Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/32Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by bellows
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/024Avoid unwanted operation
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/052Controlling, signalling or testing correct functioning of a switch

Abstract

The invention discloses a kind of gas density relay that does not have to dismounting and just can directly verify, including:Testing agency, multiple-pass joint seat, transit joint bindiny mechanism;The testing agency connects the transit joint bindiny mechanism by the multiple-pass joint seat, and the multiple-pass joint seat is additionally provided with the first interface being engaged with equipment jointing.The gas density relay that does not have to dismounting and just can directly verify of the present invention, sulfur hexafluoride electric switch can not only be inflated in same position, operating personnel can also be made not have to dismounting density monitor and need not additionally carry out the opening and closing operations of air flue, can is directly verified to density monitor, and the sealing of sulfur hexafluoride electric switch is can ensure that, there is the function of preventing verifying maloperation.

Description

A kind of gas density relay that does not have to dismounting and just can directly verify

Technical field

The present invention relates to technical field of electric power, and in particular to a kind of gas density relay that does not have to dismounting and just can directly verify Device.

Background technology

Sulfur hexafluoride gas density relay is for detecting in sulfur hexafluoride electric switch (containing density meter, pressure gauge) The change of sulfur hexafluoride gas density, its performance quality directly influence the reliable and secure operation of sulfur hexafluoride electric switch. The sulfur hexafluoride gas density relay at scene is installed on because infrequently acting, normal appearance action is dumb after one period Or the phenomenon of poor contact of contacts, some there is also temperature-compensating performance variation, easily cause six when variation of ambient temperature Sulfur fluoride gas density relay malfunctions.Therefore testing regulations regulation:Each sulfur hexafluoride electric switch should be regular using unit Sulfur hexafluoride gas density relay is verified.From the point of view of practical operation situation, to the sulfur hexafluoride gas density at scene It is to prevent trouble before it happens that relay, which carries out periodic check, ensures one of the necessary means of power equipment safety reliability service.Fig. 1 is existing There is the structural representation of the gas density relay of technology, as shown in figure 1, the gas density relay of prior art is using detection Mechanism 1 directly connects with equipment jointing 4 and equipment is detected.During field-checking, the gas of sulfur hexafluoride electric switch The plinth of density monitor is the type of attachment using non-return valve.Verify or change at present the density of this type of attachment after Electrical equipment can only just unload three-way connection seat, it is departed from Switch main body, i.e.,:Non-return valve and non-return valve are separated, is then started Relay is changed in verification.Due to that, because non-return valve is the non-return valve of self-closed, therefore will not be leaked on sulfur hexafluoride electric switch Gas.But due to that can have the risk of damage sealing ring in unloading process, therefore still can have the risk of gas leakage.

The content of the invention

The present invention provides a kind of gas density relay that does not have to dismounting and just can directly verify, for solving not having to dismounting gas The problem of volume density relay just can be verified directly.

The gas density relay provided by the invention that does not have to dismounting and just can directly verify, including:Testing agency, connect more Headstock, transit joint bindiny mechanism;The testing agency connects the transit joint bindiny mechanism by the multiple-pass joint seat, The multiple-pass joint seat is additionally provided with the first interface being engaged with equipment jointing;

The transit joint bindiny mechanism includes:Valve seat, self-sealing valve device and closeouts;The valve seat is provided with relay Device airway and switch gear airway, the self-sealing valve device are provided with Self-sealing valve airway, the relay airway, described Switch gear airway is connected with the Self-sealing valve airway;The valve seat is installed on the Self-sealing valve of the self-sealing valve device The side of set, the closeouts are removably installed in the opposite side of the self-sealing valve pocket and the opposite side of the self-sealing valve pocket is set There is the second interface being engaged with inflation transit joint or verification transit joint;The inner chamber of the self-sealing valve pocket is provided with can be along axle To mobile to open or close the self-styled valve element of the Self-sealing valve airway, the self-sealing valve pocket is connected with the valve seat Side is provided with valve element guide, and the first spring, the self-styled valve element are provided between the valve element guide and the self-styled valve element It is engaged provided with the stop valve being oppositely arranged with the switch gear airway or with the oral area of the switch gear airway Ball valve.

Further, the multiple-pass joint seat is structure as a whole with the transit joint bindiny mechanism.

Further, signal generator and pressure detector are provided with the testing agency;The signal generator includes:It is micro- Dynamic switch or magnetic-type electrical contact;The pressure detector includes:Baden pipe or bellows.

Further, the stop valve is provided with and the self-styled integrally formed cut-off valve element of valve element.

Further, the cut-off valve element is provided with cut-off seal, and the cut-off seal includes:Rubber ring, rubber blanket or Vulcanize the rubber parts on the cut-off valve element.

Further, second spring is provided between the stop valve and the oral area of the switch gear airway.

Further, the self-styled valve element is provided with self-styled seal, and the self-styled seal includes:Rubber ring, rubber blanket or Vulcanize the rubber parts on the self-styled valve element.

Further, closure seal is provided between the closeouts and the self-sealing valve pocket, the closure seal includes: Rubber ring, rubber blanket vulcanize the rubber parts on the self-styled valve element.

Further, it is additionally provided with the self-sealing valve device and matches with the inflation transit joint or the verification transit joint The self-locking connection mechanism of conjunction.

Further, the multiple-pass joint seat is structure as a whole with the equipment jointing.

Further, the transit joint bindiny mechanism is fixed in the testing agency.

Further, it is additionally provided with the multiple-pass joint seat or the transit joint bindiny mechanism for connecting gas density biography The sensor connector of sensor or gas micro-water sensor.

The present invention provides a kind of gas density relay that does not have to dismounting and just can directly verify, can not only be in same position Sulfur hexafluoride electric switch is inflated, operating personnel can also be made not have to dismounting density monitor and need not additionally carry out The opening and closing operations of air flue, it is possible to density monitor is directly verified, and can ensure that the sealing of sulfur hexafluoride electric switch, With the function of preventing from verifying maloperation.In addition, the innovation of its most worthy is:Overcome the existing side using valve-type joint Method realizes the high cost for not dismantling verification, farthest saves the use of material, undoubtedly has the huge value of environmental protection, simultaneously There is economic value and safe value again.

Brief description of the drawings

Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for this For the those of ordinary skill of field, without having to pay creative labor, other can also be obtained according to these accompanying drawings Accompanying drawing;

Fig. 1 is the structural representation of the gas density relay of prior art;

Fig. 2 faces partial cutaway schematic for the gas density relay of the embodiment of the present invention;

Fig. 3 is the dimensional structure diagram of the gas density relay of the embodiment of the present invention;

Fig. 4 faces diagrammatic cross-section for the transit joint bindiny mechanism of the embodiment of the present invention;

Fig. 5 is the structural representation of the gas density relay of the external inflation transit joint of the embodiment of the present invention;

Fig. 6 is the structural representation of the gas density relay of the external verification transit joint of the embodiment of the present invention;

Fig. 7 is the structural representation of the gas density relay of example A of the embodiment of the present invention;

Fig. 8 is the structural representation of example of embodiment of the present invention B gas density relay;

Fig. 9 is the structural representation of example of embodiment of the present invention C gas density relay;

Figure 10 is the structural representation of example of embodiment of the present invention D gas density relay;

Figure 11 is the structural representation of example of embodiment of the present invention E gas density relay;

Figure 12 is the structural representation of the gas density relay with sensor connector of the embodiment of the present invention.

Embodiment:

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.

Fig. 2 is the partial cutaway schematic of facing of the gas density relay of the embodiment of the present invention, and Fig. 3 is implemented for the present invention The dimensional structure diagram of the gas density relay of example, as shown in Figures 2 and 3, the embodiment of the present invention do not have to dismounting with regard to energy The gas density relay directly verified, including:Testing agency 1, multiple-pass joint seat 2, transit joint bindiny mechanism 3;The inspection Survey mechanism 1 and the transit joint bindiny mechanism 3 is connected by the multiple-pass joint seat 2, the multiple-pass joint seat 2 is additionally provided with and set The first interface that standby jointing 4 is engaged.The multiple-pass joint seat 2 is structure as a whole with the transit joint bindiny mechanism 3, Easy to disassemble and processing and manufacturing.The gas density relay of embodiment can also include:It is oil-filled type density monitor, close without oil type Spend relay, air density meter, gas density switch or gas gauge.

The testing agency 1 includes housing 11, pedestal 12, end seat 13 in housing 11, pressure detector 14, temperature Compensating element, 15, movement 16, pointer 17, dial 18, some signal generators 19.The signal generator 19 includes:Fine motion Switch or magnetic-type electrical contact.The pressure detector 14 includes:Baden pipe or bellows.Wherein, in testing agency 1 It is interior, based on pressure detector 14 and using temperature compensating element 15 (gas of compensating plate or housing inner sealing) to the pressure of change It is modified with temperature, reflects the change of sulfur hexafluoride gas density.I.e. in measured medium sulfur hexafluoride (SF6) gas pressure Under effect, because of the effect of temperature compensating element 15, the change of its density value, pressure value also changes accordingly, forces pressure The end of force detector 14 produces corresponding elastic deformation displacement, by means of temperature compensating element 15, passes to movement 16, movement 16 pass to pointer 17 again, then indicate tested sulfur hexafluoride gas density value on dial 18, and output report Alert locking contact.So density monitor can just show lfur hexafluoride density value.If gas leakage, under its density value Drop, pressure measuring element 14 is produced accordingly to bottom offset, by temperature compensating element 15, passes to movement 16, movement 16 Pointer 17 is passed to again, and pointer 17 is just walked toward the small direction of indicating value, can be particularly shown gas leakage degree, and signal output, reach Sulfur hexafluoride gas density in the equipment such as monitoring and control electric switch, makes electrical equipment trouble free service.Thus complete close Spend relay function or density meter (or pressure gauge) shows the function of density.

Fig. 4 faces diagrammatic cross-section for the transit joint bindiny mechanism of the embodiment of the present invention, as shown in figure 4, the mistake Crossing joint bindiny mechanism 3 includes:Valve seat 31, self-sealing valve device 32 and closeouts 33;The valve seat 31 leads to provided with relay Air flue 311 and switch gear airway 312, the self-sealing valve device 32 are provided with Self-sealing valve airway 321, the relay ventilation Road 311, the switch gear airway 312 are connected with the Self-sealing valve airway 321.The one of relay gas circuit connector 6 End connection multiple-pass joint seat 2, the other end connection relay connector 61 of relay gas circuit connector 6, relay connector 61 Corresponding to relay airway 311.One end connection multiple-pass joint seat 2 of switch gas circuit connector 5, switch gas circuit connector 5 Other end coupling cock equipment connection port 51, switchgear connector 51 correspond to switch gear airway 312.Switchgear leads to Air flue 312 can have one to three (respectively from the A phase, B phase, C phase in sulfur hexafluoride electric switch).The valve seat 31 is pacified The side of self-sealing valve pocket 322 loaded on the self-sealing valve device 32, the closeouts 33 are removably installed in the Self-sealing valve The opposite side of set 322 and the opposite side of the self-sealing valve pocket 322 are provided with to be engaged with inflation transit joint or verification transit joint Second interface.The inner chamber of the self-sealing valve pocket 322 is provided with the self-styled valve element 323 that can be axially moveable, on self-styled valve element 323 Side with respect to closeouts 33 is provided with flange, and flange is close to the inner chamber of self-sealing valve pocket 322 to close the Self-sealing valve airway 321, flange separates the inner chamber of self-sealing valve pocket 322 to open the Self-sealing valve airway 321.The self-sealing valve pocket 322 and institute The side for stating the connection of valve seat 31 is provided with the valve element guide 324 of screw thread downlink connection, and valve element guide 324 makes self-styled valve element 323 In axial direction move.Further, it is also possible to cancel the valve element guide 324 for the inner chamber for being threaded in self-sealing valve pocket 321, but A spacer ring suitable with the structure of valve element guide 324, in a word, self-sealing valve device 32 are integrally formed in Self-sealing valve interface block inner chamber Form can not repeated one by one herein with various.Set between the flange of the valve element guide 324 and the self-styled valve element 323 There is the first spring 325, the first spring 325 is sleeved on self-styled valve element 323.The self-styled valve element 323 is provided with to be set with the switch The standby stop valve 326 being oppositely arranged of airway 312 or the ball valve being engaged with the oral area of the switch gear airway 312.Such as It is ball valve, can drives ball valve closing switch equipment airway by rotating self-styled valve element.Transit joint bindiny mechanism 3 can be with Quick connected mode is set to, further improves operating efficiency.

The stop valve 326 is provided with to be provided with the self-styled integrally formed cut-off valve element of valve element 323, the cut-off valve element End seal 3261, the cut-off seal 3261 includes:The rubber of rubber ring, rubber blanket or vulcanization on the cut-off valve element Glue part.The self-styled valve element 323 is provided with self-styled seal 3231, and the self-styled seal 3231 includes:Rubber ring, rubber blanket or Vulcanize the rubber parts on the self-styled valve element.Closure seal is provided between the closeouts 33 and the self-sealing valve pocket 322 3311, the closure seal 3311 includes:Rubber ring, rubber blanket or O-ring.The closeouts 33 include capping 331.

Second spring is also provided between the stop valve 326 and the oral area of the switch gear airway 312.

The operation principle of the gas density relay of the embodiment of the present invention is as follows:Normal operating conditions does not have external transition to connect During head, as shown in figure 4, the self-sealing valve device 32 being located on gas density relay is in the presence of the first spring 325, Self-sealing valve Self-styled seal 3231 on core 323 reliably seals with self-sealing valve pocket 322, gas is not leaked.And end on valve element 326 Cut-off seal 3261 is not in contact with the inner chamber of the Self-sealing valve interface block of valve seat 31, does not block switchgear connection Without being blocked, gas circuit and the relay airway 311 of switch gear airway 312 are for mouth 51, i.e. switch gear airway 312 Communicate.

Fig. 5 be the embodiment of the present invention external inflation transit joint gas density relay structural representation, such as Fig. 5 It is shown, to the inflation of sulfur hexafluoride electric switch, tonifying Qi or the micro- water of test, after laying down closeouts 33, by inflation transit joint 7 The inner chamber of self-sealing valve pocket 322 is inserted from the rear end of self-sealing valve pocket 322 and is supported in the rear end of self-styled valve element 323, makes self-styled valve element 323 move forward a distance S1, so as to open self-styled valve element 323, make inflation transit joint 7 and switch gear airway 312 Gas circuit communicates, although now self-styled valve element 323 promotes cut-off valve element 326 to move, its limited displacement, ends on valve element 326 Cut-off seal 3261 do not contact with the inner cavity surface of valve seat 31, with switch gear airway 312 and not being in contact, make Switch gear airway 312 and the gas circuit of inflation transit joint 7 are mutually unobstructed, it is possible to convenient that sulfur hexafluoride electric switch is carried out Inflation.Wherein, distance S1 need to ensure switchgear connector 51 without blocked.It is also provided with self-sealing valve pocket 322 spacing Mechanism, when inflation transit joint 7 inserts the inner chamber of self-sealing valve pocket 322 from the rear end of self-sealing valve pocket 322 and supports in self-styled valve element 323 rear end, self-styled valve element 323 is moved forward a distance S1 and utilize position-limit mechanism spacing, so as to open self-styled valve element 323, inflation transit joint 7 and the gas circuit of switch gear airway 312 are communicated, now ends the cut-off sealing on valve element 326 Part 3261 and switch gear airway 312 and it is not in contact, makes switch gear airway 312 and inflation transit joint 7 Gas circuit is mutually unobstructed, it is possible to convenient that sulfur hexafluoride electric switch is inflated.

Fig. 6 be the embodiment of the present invention external verification transit joint gas density relay structural representation, such as Fig. 6 It is shown, to check-up gas density electrical relay, closeouts 33 are laid down, verification transit joint 8 is inserted from the rear end of self-sealing valve pocket 322 Enter the inner chamber of self-sealing valve pocket 322 and support in the rear end of self-styled valve element 323, self-styled valve element 323 is moved forward a distance S2, make The cut-off seal 3261 that must end on valve element 326 contacts with the inner cavity surface of valve seat 31 (Self-sealing valve interface block), switchgear Airway 312 is blocked not to be leaked outside with the gas of sealed switch apparatus airway 312, while makes verification transit joint 8 and relay Device airway 311 communicates.Thus realize and do not have to dismounting gas density relay, density monitor is directly verified.Together Under this state of sample, if testing agency 1 is split independence, the also core component testing agency 1 of replaceable gas density relay. Wherein, distance S2 need to ensure that switchgear connector 51 is blocked by stop valve 326.

The transit joint bindiny mechanism 3 can be fixed in the testing agency 1.Fig. 7 is example A of the embodiment of the present invention Gas density relay structural representation, as shown in fig. 7, the transit joint bindiny mechanism 3 is fixed on the detection machine The lower section in the lower right corner, i.e. junction block 1J of the housing 11 of structure 1, one end connectivity device jointing of relay gas circuit connector 6 4, the relay connector of the other end connection transit joint bindiny mechanism 3 of relay gas circuit connector 6, relay connector pair Should be in relay airway.One end connectivity device jointing 4 of switch gas circuit connector 5, switch gas circuit connector 5 it is another The switchgear connector of end connection transit joint bindiny mechanism 3, switchgear connector correspond to switch gear airway, and Relay gas circuit connector 6 does not connect directly with switch gas circuit connector 5 at equipment jointing 4.Fig. 8 is implemented for the present invention The structural representation of example B gas density relay is illustrated, as shown in figure 8, the transit joint bindiny mechanism 3 is also secured at institute The lower section in the lower right corner, i.e. junction block 1J of the housing 11 of testing agency 1 is stated, and the connection of one end of relay gas circuit connector 6 is examined The pedestal 12 of mechanism 1 is surveyed, the other end of relay gas circuit connector 6 connects the relay connector of transit joint bindiny mechanism 3, Relay connector corresponds to relay airway.One end connectivity device jointing 4 of switch gas circuit connector 5, switch gas The switchgear connector of the other end connection transit joint bindiny mechanism 3 of road connector 5, switchgear connector, which corresponds to, to be opened Equipment airway is closed, and relay gas circuit connector 6 does not connect directly with switch gas circuit connector 5 at equipment jointing 4. Fig. 9 is the structural representation of example of embodiment of the present invention C gas density relay, as shown in figure 9, the transit joint connects Mechanism 3 is fixed on behind the bottom of housing 11 of the testing agency 1.In a word, the transit joint bindiny mechanism 3 is fixed on institute State the position in testing agency 1, angle and direction is various, the housing 11 of testing agency 1 is interior as described in can be fixed on Portion, side, front, bottom or equipment jointing etc., specifically can be according to being actually needed and flexible design.Or furtherly, Position that the transit joint bindiny mechanism 3 is fixed on the housing 11 of the testing agency 1, angle and direction be it is various, Specifically can be according to being actually needed and flexible design.

The multiple-pass joint seat 2 can be structure as a whole with the equipment jointing 4, the transit joint bindiny mechanism 3 can be fixed on the equipment jointing 4.Figure 10 is the structure of example of embodiment of the present invention D gas density relay Schematic diagram, as shown in Figure 10, the transit joint bindiny mechanism 3 are directly anchored on the equipment jointing 4.Figure 11 is this The structural representation of inventive embodiments example E gas density relay, as shown in figure 11, the transit joint bindiny mechanism 3 It is fixed on by switch gas circuit connector 5 and relay gas circuit connector 6 on the equipment jointing 4.In addition, the transition Joint bindiny mechanism 3 can also be fixed on the electrical equipment by switch gas circuit connector 5 and relay gas circuit connector 6 On.In a word, the transit joint bindiny mechanism 3 is fixed on position on the equipment jointing 4, angle and direction is various , specifically can be according to being actually needed and flexible design.

During so whole inflation, verification and valve operation, just do not have to dismounting and depart from sulfur hexafluoride gas density relay Device or valve seat, brought convenience for the operation of electric power overhaul personnel, it is ensured that the safe handling of sulfur hexafluoride electrical equipment.Due to The density monitor of the present invention need not additionally carry out the opening and closing operations of air flue, particularly as long as can only simultaneously utilize external verified Cross joint 8, it is possible to which realization is directly verified to density monitor.After verification, staff is bound to unload and carried The verification transit joint 8 of tracheae is connected, so the self-sealing valve device 32 of density monitor of the invention is because of the first spring or second When spring effect just automatically restores to normal operating conditions, therefore maloperation is thoroughly prevented, and can ensure that sulfur hexafluoride is electric Switch seal and safety.

In addition, stop valve can also include:In switch gear airway and Opposite direction connection is in self-styled valve element front end Checking-valve body, the cut-off seal being located on checking-valve body, the spring mountings being fixed on valve seat and it is located at checking-valve body The cut-off Self-sealing valve that cutoff spring between spring mountings is formed.

It is additionally provided with what is be engaged with the inflation transit joint or the verification transit joint in the self-sealing valve device 32 Self-locking connection mechanism, spacing rear self-styled valve element or stop valve are locked.The multiple-pass joint seat or the transit joint The sensor connector for connecting Gas Density Sensor or gas micro-water sensor is additionally provided with bindiny mechanism.Figure 12 is this The structural representation of the gas density relay with sensor connector of inventive embodiments, as shown in figure 12, transit joint The self-sealing valve device 32 of bindiny mechanism is provided with sensor connector, and sensor connector connects Gas Density Sensor 9, in addition, Sensor connector can also connect gas micro-water sensor or gas analyte sensor.The quantity of sensor is in the present invention Do not limit, depend primarily on the interface quantity of transit joint bindiny mechanism and multiple-pass joint seat.Gas Density Sensor is used for The on-line monitoring of density, gas micro-water sensor are used for the on-line monitoring of micro- water, and gas analyte sensor is used for analyte On-line monitoring.

Density monitor of the invention can also directly carry gas density transmitter, Gas Density Sensor, gas in a word The micro- water transmitter of body, gas micro-water sensor or sensor connector, sensor connector can also connect gas density pick-up Device, Gas Density Sensor, gas micro-water sensor or gas analyte sensor.The quantity of transmitter or sensor is in this hair Do not limited in bright, the on-line monitoring of gas density transmitter or Gas Density Sensor for density, the micro- water transmitter of gas Or gas micro-water sensor is used for the on-line monitoring of micro- water, gas analyte sensor is used for the on-line monitoring of analyte.So Can realizes a kind of telemetering type gas density relay free of demolition when can verify, and is provided effectively for intelligent grid construction Technical guarantee and support.

The gas density relay of the present invention can carry out integrated design, i.e. testing agency 1 (display and control section) Can be with integral structure with multiple-pass joint seat 2, transit joint bindiny mechanism 3.The gas density relay of the present invention can also enter Row modularized design, i.e. testing agency 1 (display and control section) may be designed to a standalone module, when the module is problematic When, we can utilize the methods such as external verification transit joint switch gear airway 312 is blocked with sealed switch apparatus The gas of airway 312 does not leak outside, that is, cuts off the gas circuit being connected with equipment, can be carried out being individually replaced testing agency at the scene 1, ensure system safety operation.

The gas density relay of the present invention, it has the advantages that:

(1) inflation inlet of gas density relay of the invention, micro-water test port, verification mouth and gas Shuttoff Valve mouth It is same mouth, i.e., inflatable interface, micro-water test port is not set additionally, it is possible to sulfur hexafluoride is electrically opened in same position The gas circuit for being inflated and testing micro- water or shut-off sulfur hexafluoride electric switch is closed to the direct school of gas density relay progress Test, farthest reduce air leakage point;

(2) gas density relay of the invention can thoroughly prevent maloperation, because air flue need not be carried out additionally Opening and closing operations, it is possible to which realization is directly verified to gas density relay, and can ensure that sulfur hexafluoride electric switch seals And safety.In the transit joint bindiny mechanism of the gas density relay, it can be achieved with inflating (testing micro- water), gas shutoff With the operation of verification, do not have to reinstall or reset Self-sealing valve after the completion of operation, so as to can guarantee that sulfur hexafluoride electric switch In normal operation, all air inlet gas circuits of sulfur hexafluoride electric switch is in the passage of gas density relay and communicate State, such gas density relay just can really monitor the sulfur hexafluoride gas density of sulfur hexafluoride electric switch, if hexafluoro Change the sulfur hexafluoride gas in sulphur electric switch once being revealed, gas density relay will send alarm in time or close Lock signal, it ensure that the safe operation of power network;

(3) gas density relay of the invention need not set and be switched on and off indicating, also ensure that sulfur hexafluoride is electric For switch in normal operation, all air inlet gas circuits of sulfur hexafluoride electric switch are to communicate with the passage of gas density relay , such density monitor just can really monitor the sulfur hexafluoride gas density in sulfur hexafluoride electric switch;

(4) density monitor good seal performance of the invention, safety coefficient is high, simple in construction, small volume.

In summary, the novelty for not having to the gas density relay that dismounting just can be verified directly of the invention is obvious , so as to can guarantee that sulfur hexafluoride electric switch in normal operation, make all air inlet gas circuits of sulfur hexafluoride electric switch with The passage of gas density relay is in communicating state, and it is electric that such gas density relay just can really monitor sulfur hexafluoride The sulfur hexafluoride gas density of switch, if the sulfur hexafluoride gas in sulfur hexafluoride electric switch is once revealed, gas Density monitor will send alarm or block signal in time, ensure that the safe operation of power network.The present invention gas density after Electrical equipment can adapt to use under the field condition to vary, while can thoroughly prevent the misoperation of operator, ensure The safe operation of power network, and can are convenient to the inflation of sulfur hexafluoride electric switch (or the micro- water of test).

In addition, valve element guide can be arranged in self-sealing valve pocket.Self-styled valve element is provided with the phase with switch gear airway The ball valve of cooperation.I.e. in no external transit joint, self-sealing valve device closes Self-sealing valve airway and relay is ventilated Road communicates with switch gear airway;If after laying down closeouts, an inflation transit joint 7 is inserted from from the rear end of self-sealing valve pocket Seal the inner chamber of valve pocket and support in the rear end of self-styled valve element, self-styled valve element is moved forward a segment distance S1, connect inflation transition Head communicates with relay airway and switch gear airway respectively;If after laying down closeouts, by a verification transit joint 8 from certainly The rear end insertion self-sealing valve pocket inner chamber of envelope valve pocket is simultaneously connected to the rear end of self-styled valve element, self-styled valve element is moved forward a segment distance Verification transit joint is rotated into an effective angle α again after S2 so that ball valve by switch gear airway and relay airway every It is disconnected, and verification transit joint is communicated with relay airway, realize the verification of density monitor.

Finally it should be noted that:Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations;To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that:Its according to The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (12)

  1. A kind of 1. gas density relay that does not have to dismounting and just can directly verify, it is characterised in that including:Testing agency, lead to more Plinth, transit joint bindiny mechanism;The testing agency connects the transit joint by the multiple-pass joint seat and connects machine Structure, the multiple-pass joint seat are additionally provided with the first interface being engaged with equipment jointing;
    The transit joint bindiny mechanism includes:Valve seat, self-sealing valve device and closeouts;The valve seat leads to provided with relay Air flue and switch gear airway, the self-sealing valve device are provided with Self-sealing valve airway, the relay airway, the switch Equipment airway is connected with the Self-sealing valve airway;The valve seat is installed on the self-sealing valve pocket of the self-sealing valve device Side, the closeouts be removably installed in the opposite side of the self-sealing valve pocket and the self-sealing valve pocket opposite side be provided with The second interface that inflation transit joint or verification transit joint are engaged;The inner chamber of the self-sealing valve pocket is provided with and can moved vertically Move to open or close the self-styled valve element of the Self-sealing valve airway, the side that the self-sealing valve pocket is connected with the valve seat Provided with valve element guide, the first spring is provided between the valve element guide and the self-styled valve element, the self-styled valve element is provided with The stop valve being oppositely arranged with the switch gear airway or the ball valve being engaged with the oral area of the switch gear airway.
  2. 2. gas density relay according to claim 1, it is characterised in that the multiple-pass joint seat connects with the transition Head bindiny mechanism is structure as a whole.
  3. 3. gas density relay according to claim 1, it is characterised in that be provided with signal in the testing agency Device and pressure detector;The signal generator includes:Microswitch or magnetic-type electrical contact;The pressure detector bag Include:Baden pipe or bellows.
  4. 4. gas density relay according to claim 1, it is characterised in that the stop valve is provided with and the Self-sealing valve The integrally formed cut-off valve element of core.
  5. 5. gas density relay according to claim 4, it is characterised in that the cut-off valve element is provided with cut-off and sealed Part, the cut-off seal include:The rubber parts of rubber ring, rubber blanket or vulcanization on the cut-off valve element.
  6. 6. gas density relay according to claim 1, it is characterised in that the stop valve leads to the switchgear Second spring is provided between the oral area of air flue.
  7. 7. gas density relay according to claim 1, it is characterised in that the self-styled valve element is provided with self-styled sealing Part, the self-styled seal include:Rubber ring, rubber blanket vulcanize the rubber parts on the self-styled valve element.
  8. 8. gas density relay according to claim 1, it is characterised in that the closeouts and the self-sealing valve pocket it Between be provided with closure seal, it is described closure seal include:Rubber ring, rubber blanket vulcanize the rubber on the self-styled valve element Part.
  9. 9. gas density relay according to claim 1, it is characterised in that be additionally provided with the self-sealing valve device and institute State inflation transit joint or the self-locking connection mechanism for verifying transit joint and being engaged.
  10. 10. gas density relay according to claim 1, it is characterised in that the multiple-pass joint seat and the equipment Jointing is structure as a whole.
  11. 11. gas density relay according to claim 1, it is characterised in that the transit joint bindiny mechanism is fixed In the testing agency.
  12. 12. according to the gas density relay described in claim 1-11 any one, it is characterised in that the multiple-pass joint seat Or the sensor for connecting Gas Density Sensor or gas micro-water sensor is additionally provided with the transit joint bindiny mechanism Connector.
CN201410562562.5A 2014-10-21 2014-10-21 A kind of gas density relay that does not have to dismounting and just can directly verify CN104299845B (en)

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Publication number Priority date Publication date Assignee Title
CN104616931B (en) * 2015-02-02 2016-04-13 国家电网公司 A kind of low temperature resistant digital SF6 relay
CN107863269A (en) * 2017-11-29 2018-03-30 上海乐研电气有限公司 A kind of microminiature gas density relay
CN108010796B (en) * 2018-01-12 2020-06-16 上海乐研电气有限公司 Gas density relay
CN108231476B (en) * 2018-01-12 2020-06-16 上海乐研电气有限公司 Gas density relay

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CN103367030A (en) * 2013-08-02 2013-10-23 上海乐研电气科技有限公司 Sulfur hexafluoride gas density relay assembling joint capable of preventing maloperation

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CN201327795Y (en) * 2008-11-06 2009-10-14 上海卓电电气有限公司 Assembly joint for checking SF* gas density controller in SF* electric switch
CN102013357A (en) * 2009-09-04 2011-04-13 上海乐研电气科技有限公司 Sulfur hexafluoride gas density relay
CN103366995B (en) * 2013-08-02 2015-03-25 上海乐研电气科技有限公司 Forming method for assembling connector of gas density relay capable of preventing misoperation
CN204230155U (en) * 2014-10-21 2015-03-25 上海乐研电气科技有限公司 A kind ofly need not dismantle the gas density relay that just can directly verify

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CN201966156U (en) * 2010-12-01 2011-09-07 平高集团有限公司 Breaker and instrument verifying valve device thereof
CN103367030A (en) * 2013-08-02 2013-10-23 上海乐研电气科技有限公司 Sulfur hexafluoride gas density relay assembling joint capable of preventing maloperation

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