CN105206470A - Sulfur hexafluoride gas density relay - Google Patents
Sulfur hexafluoride gas density relay Download PDFInfo
- Publication number
- CN105206470A CN105206470A CN201510703753.3A CN201510703753A CN105206470A CN 105206470 A CN105206470 A CN 105206470A CN 201510703753 A CN201510703753 A CN 201510703753A CN 105206470 A CN105206470 A CN 105206470A
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- Prior art keywords
- sensitive switch
- operating grip
- plane
- gas density
- sulfur hexafluoride
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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
- H01H35/26—Details
-
- 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
-
- 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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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention provides a microswitch which comprises a microswitch body and an operating handle, wherein connection terminals and a switch terminal stretch out of the microswitch body; one end of the operating handle is connected outside the microswitch body, and the other end of the operating handle strides over the switch terminal and extends towards one end of the microswitch. The invention also provides a wide-range sulfur hexafluoride gas density relay comprising the microswitch. According to the invention, the problems that a conventional microswitch is small in motion range and full-scale display is hard to achieve are solved, the full-range (minus 0.1 to 0.9 MPa) display, particularly display with the range starting from minus 0.1 MPa, of the gas density relay can be quite easily achieved, and the vacuum degree can be displayed during vacuum pumping, so that popularization and application are quite easy; the adopted contact is the microswitch, so that reliable electrical performance of the density relay is guaranteed.
Description
Technical field
The present invention relates to a kind of gas density relay, particularly relate to a kind of sulphur hexafluoride (SF of wide range
6) gas density relay.
Background technology
SF
6insulation and the arc extinction performance of circuit breaker depend on SF to a great extent
6the purity of gas and density, so, to SF
6the detection of gas purity and the supervision of density seem particular importance.If adopt ordinarily manometer to monitor SF
6the leakage of gas, that will be hard to tell and leak owing to really existing or cause SF due to variation of ambient temperature
6the pressure change of gas.In order to the object often monitoring density can be reached, national Specification, SF
6circuit breaker should install Pressure gauge or SF
6air density meter and density monitor.Pressure gauge or SF
6air density meter has been supervision effect, and density monitor controls and protective effect.
Sulfur hexafluoride gas density relay by pressure measxurement and warning block signal switch set at a device, by the impact of special bucking-out system adjustment ambient temperature, reflection gas density.At present, be used for monitoring the SF in sulfur hexafluoride electrical equipment
6in the signaling gear (signal control portion) of the sulfur hexafluoride gas density relay of gas density, the general load cell adopted is Baden's pipe or bellows, and the contact of employing is sensitive switch; Indicating value indication mechanism generally also adopts Baden's pipe in signaling gear or bellows as load cell.Signaling gear is managed by Baden or bellows and sensitive switch acting in conjunction, exports reflection SF
6the signal of telecommunication of gas density, the mechanical deformation that indicating value indication mechanism is managed by Baden or bellows itself occurs because of pressure simultaneously also indicates SF by movement steering needle
6gas density indicating value.
But this sulfur hexafluoride gas density relay, be the controlling organization based on Baden's pipe or bellows and sensitive switch.Namely current, the load cell that the sulfur hexafluoride gas density relay being used for the sulfur hexafluoride gas density of monitoring in sulfur hexafluoride electrical equipment generally adopts is Baden's pipe or bellows, the contact of employing is sensitive switch, it to be managed by Baden or bellows and sensitive switch acting in conjunction export the signal of telecommunication of reflection sulfur hexafluoride gas density, and the mechanical deformation that indicating value indication mechanism is managed by Baden or bellows itself occurs because of pressure simultaneously also indicates sulfur hexafluoride gas density indicating value by movement steering needle.But for this sulfur hexafluoride gas density relay, it is sensitive switch based on contact, sensitive switch presses down on sensitive switch body by operating grip, because the actuating length scope of existing sensitive switch is little, and its contact operating grip is linear, just make the display range ability of density monitor also little, be difficult to realize gamut scope (-0.1 to 0.9MPa) display, particularly can not realize the display being initiated with-0.1MPa, just can not show vacuum degree when vacuumizing, be not easy very much to apply.If adopt two Badens pipe in addition, control and display section independent, considerably increase manufacturing cost undoubtedly, so in the urgent need to innovating, provide a kind of sulfur hexafluoride gas density relay of new wide range of low cost.
Summary of the invention
The invention provides a kind of wide range sulfur hexafluoride gas density relay and a kind of sensitive switch, little for the range indication range solving the sulfur hexafluoride gas density relay of prior art, be difficult to the problem realizing the display of gamut scope.
First aspect present invention is to provide a kind of sensitive switch, comprise sensitive switch body and operating grip, splicing ear and switch stretch out from sensitive switch body respectively, and operating grip one end is connected to sensitive switch, and this is external, and the other end strides across switch and extends to sensitive switch one end.
Wherein, the side of the sensitive switch body of operating grip and attended operation handle,
In the first preferred embodiment of the present invention, described operating grip comprises first-hand shank and second handle portion, and second handle portion is positioned at the front end of first-hand shank; Be connected by connecting portion between first-hand shank and second handle portion, to make first-hand shank place plane between second handle portion place plane and sensitive switch body, or to make second handle portion place plane between first-hand shank place plane and sensitive switch body.
More preferably, forming station stepped structure between the first-hand shank of described operating grip and second handle portion.
More preferably, between the step-like structure formed between the first-hand shank of described operating grip and second handle portion, difference in height is preferably >=1mm.
In an advantageous embodiment, described first-hand shank and second handle portion can be any one in tablet, shaft independently, can also be made into other shape thing, as the compound shape thing etc. of cylindricality and sheet.
More preferably, described switch is between first-hand shank and sensitive switch body.
More preferably, described first-hand shank and second handle portion and connecting portion can be integral structures, also can be dismountable structures.
More preferably, described connecting portion can be all with first-hand shank or second thing integral structure, and and removably connect between another handle portion; Or connecting portion comprises dismountable part, the first plane and/or the second plane removably connect a part respectively, or with a part integral structure.
More preferably, described connecting portion one end is connected to first-hand shank forward end, and forward downward tilts, and the other end connects second handle portion.
More preferably, described first-hand shank is parallel with second handle portion.
In the second preferred embodiment of the present invention, the side of described sensitive switch body attended operation handle, below operating grip, be provided with the first plane and the second plane, the second plane is in the front of the first plane, and the first plane is lower than the second plane.
Wherein, described switch is positioned at the first plane.
More preferably, the transition face tilted by the first plane forward upward is provided with between described first plane and the second plane.
More preferably, parallel between described first plane and the second plane.
More preferably, between described first plane and the second plane, difference in height is preferably >=1mm.
In an advantageous embodiment, described operating grip both sides are provided with two downward baffle plates.
More preferably, described height of baffle plate is preferably 3-18mm.
In a kind of more preferred embodiment, the front end of operating grip is also provided with downward end plate, and this end plate jointly forms a semi-enclosed cell body district together with two side shields in the front end of contact operating grip.
More preferably, described end plate height is preferably 3-18mm.
More preferably, described cell body sector width is preferably 4.4-18mm.
Can mutually combine between the present invention's the first preferred embodiment above-mentioned and the second preferred embodiment, implement simultaneously, therefore, in the present invention's the 3rd preferred embodiment, adopt the scheme of the first preferred embodiment above-mentioned and the second preferred embodiment simultaneously, in this case, height difference H 1 and the adding and (H1+H2) >=1mm of height difference H 2 between described first plane and the second plane between the step-like structure formed between at least first-hand shank and second handle portion.
In an advantageous embodiment, described operating grip total length is preferably 21-50mm.
In an advantageous embodiment, described operating grip material is elastomeric material, is more preferably the material that permanent deformation not easily occurs endurance.
More preferably, the modulus of elasticity of described operating grip is preferably 50-250GPa, is more preferably 60-240GPa, is more preferably 80-230Gpa, is more preferably 100-200GPa.
Described operating grip material can be any one or a few in metal, alloy, polymeric material.
The present invention second aspect is to provide a kind of wide range sulfur hexafluoride gas density relay, comprises housing and/or pedestal, also comprises signaling gear and indicating value indication mechanism, and signaling gear and indicating value indication mechanism are fixed on pedestal and/or in housing; Wherein,
Described signaling gear comprises sensitive switch described in the present invention first aspect as contact, and sensitive switch body is fixing on a printed circuit or in housing.
Described pedestal and/or printed circuit board (PCB) also can be arranged in housing.
Wherein, described signaling gear and/or indicating value indication mechanism also can be positioned at described housing.
Wherein, described housing can be comprise a chamber or multiple chamber, and described signaling gear and indicating value indication mechanism can be in different chambers, or in same chamber.
In an advantageous embodiment, described wide range sulfur hexafluoride gas density relay comprises crossbeam, and crossbeam is also fixed with regulating element, and regulating element points to the operating grip of sensitive switch.
In an advantageous embodiment, described indicating value indication mechanism comprises movement, dial and pointer, and pointer is connected on movement, and dial is fixed on movement or in housing; Described indicating value indication mechanism also comprises: actuator, temperature compensating element and end seat, and wherein: movement is arranged on pedestal, actuator one end connects pedestal, other end link seat; Temperature compensating element one end link seat, the other end connects described crossbeam, crossbeam motion under actuator and/or temperature compensating element drive.
Described actuator can be Baden's pipe (being also called Bourdon tube, Bourdontube) or bellows, and is preferably Baden's pipe.
Wherein, the temperature compensating element compensating device that bimetal leaf can be adopted to form or adopt sealing be filled with the compensating device compensating gas and form.
The width of described Baden pipe is >=20mm.
Described regulating element can be the structure such as screw, protruding block.
Wherein, described beam-ends is connected to movement, and more preferably, described beam-ends connects movement by connecting rod.
Wherein, described temperature compensating element can tyre thoughts thermometer bulb.
Described housing is provided with junction block, and described printed circuit board (PCB) is wired to the junction block on housing.
In foregoing of the present invention, described wide range refers to that lower limit can indicate≤-0.05MPa, is more preferably≤-0.07MPa, is more preferably≤-0.1MPa; The upper limit can indicate >=0.5MPa, is more preferably >=0.9MPa, is more preferably >=1MPa.
In foregoing of the present invention, described " front " refers to operating grip free end direction, and described " afterwards " refers to that operating grip connects the direction of sensitive switch body.Described D score refers to the direction of operating grip, described " on " refer to the direction of sensitive switch body.
Should be understood that, in foregoing of the present invention, each preferred embodiment can be combined without restriction mutually by those skilled in the art, and various combination also within the scope of the present invention.
Wide range sulfur hexafluoride gas density relay provided by the invention, operating grip place and/or the sensitive switch body surface of sensitive switch are stairstepping, the actuating length scope overcoming existing sensitive switch is little, be difficult to realize gamut display problem, gamut scope (-0.1 to the 0.9MPa) display of gas density relay can be realized easily, particularly be very easy to the display realizing being initiated with-0.1MPa, just can show vacuum degree when vacuumizing, be very easy to apply.And the contact adopted is sensitive switch, ensure the reliable electric property of density monitor.Signaling gear and indicating value indication mechanism can be interrelated, can also separately be fixed on pedestal and/or in housing.
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 introduced simply, 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 partial cutaway schematic of the wide range sulfur hexafluoride gas density relay of the embodiment of the present invention one;
Fig. 2 is the first sensitive switch schematic diagram of the wide range sulfur hexafluoride gas density relay in the embodiment of the present invention one;
Fig. 3 is the second sensitive switch schematic diagram of the wide range sulfur hexafluoride gas density relay in the embodiment of the present invention one;
Fig. 4 is the sensitive switch plan structure schematic diagram of the wide range sulfur hexafluoride gas density relay in the embodiment of the present invention one;
Fig. 5 is the partial cutaway schematic of the wide range sulfur hexafluoride gas density relay of the embodiment of the present invention two;
Fig. 6 is the sensitive switch schematic diagram of the wide range sulfur hexafluoride gas density relay in the embodiment of the present invention two; Fig. 7 is the sensitive switch schematic diagram of the wide range sulfur hexafluoride gas density relay in the embodiment of the present invention three.
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.
Embodiment one
With reference to Fig. 1-4, wide range sulfur hexafluoride gas density relay of the present invention mainly comprise joint, pedestal 1, movement 2, end seat 3, crossbeam 4, watchcase, dial, pointer 5, Baden's pipe 6 (width of Baden's pipe is 25mm), temperature compensating element 7, junction block 8, several sensitive switches 91,92,93, printed circuit board 10, electric wire 13, several regulating parts 141,142,143, connecting rod 15, watch crystal, cover circle etc.
Wherein, joint is fixed on watchcase, and movement 2 is fixed on pedestal 1.One end of Baden's pipe 6 is welded on pedestal 1 and is also communicated with it, and the other end is connected with one end of temperature compensating element 7 by end seat 3, and the other end of temperature compensating element 7 is connected with crossbeam 4.Crossbeam 4 is connected with connecting rod 15 again, and connecting rod 15 is connected with movement 2 again, and connecting rod 15 is vertical with crossbeam 4.Crossbeam 4 is fixed with several regulating parts 141,142,143.
Several sensitive switches 91,92,93 are separately fixed on printed circuit board 10, printed circuit board 10 is fixed on fixed head 12, fixed head 12 is also arranged on pedestal 1, and several sensitive switch 91,92,93 correspondences are arranged on the top of each regulating part 141,142,143.
Location-plate 11 is fixing on the movement 2, and pointer 5 and dial are separately fixed on movement 2.The contact of sensitive switch, by electric wire 13, be connected to junction block 8 from printed circuit board 10, junction block 8 is fixed on watchcase.Watch crystal, cover circle are separately fixed on watchcase, and its internal mechanism can be protected to invade from mechanical damage and dirt, rainwater.One end of deferent is connected with pedestal 1, and positiver sealing; The other end of deferent is connected with joint, and positiver sealing.
Sensitive switch reinforcing mechanisms is fixed on enclosure interior, and the present embodiment is just fixed on sensitive switch.Wherein the form of sensitive switch reinforcing mechanisms is unrestricted, can variation.
As shown in Figures 2 and 3, for sensitive switch 91, sensitive switch 91 comprises sensitive switch body 900, and sensitive switch body 900 is fixed on printed circuit 10.Splicing ear 905 and switch 906 stretch out from sensitive switch body 900 respectively, and operating grip 911 one end is connected to outside sensitive switch body 900, and the other end strides across switch 906 and extends to sensitive switch body 900 one end.
Operating grip 911 comprises first-hand shank and second handle portion (is preferably tablet in the present embodiment, but can also be other shape), first-hand shank is connected on sensitive switch body 900, and switch 906 is between first-hand shank and sensitive switch body 900.Be provided with an inclined-plane between second handle portion and first-hand shank, inclined-plane tilts from first-hand shank forward downward, makes forming station stepped structure between first-hand shank and second handle portion.Between the step-like structure formed between the first-hand shank of operating grip and second handle portion, difference in height is preferably H >=1mm.As shown in Figure 2, first-hand shank and second handle portion can be demountable structures, between by anatomical connectivity such as rivet 902 grade.Fig. 3 is the microswitch structure of another kind of operating grip, and be with the sensitive switch operating grip difference of Fig. 2, first-hand shank and second handle portion are integral type structure.
The both sides, contact operating grip front end of sensitive switch have the baffle plate 903 holded up, and the height of baffle plate is 3-18mm; The front end of each contact operating grip is also respectively equipped with one piece and holds up end plate 904, and this end plate 904 jointly forms a semi enclosed area that can limit regulating part and depart from contact operating grip together with two side shields 903 in the front end of contact operating grip.The front end of each contact operating grip and the effective width W of regulating part contact site are 4.4-18mm simultaneously, and contact operating grip length L is 21-50mm.
The action principle of wide range sulfur hexafluoride gas density relay of the present invention is based on flexible member Baden pipe 6, utilizes the pressure and temperature of temperature compensating element 7 to change to revise, reaction SF
6the change of gas density.Namely at measured medium SF
6under the pressure effect of gas, owing to there being the effect of temperature compensating element 7, the change of its density value, force value also changes accordingly, the end of Baden's pipe 6 is forced to produce corresponding strain---displacement, by means of temperature compensating element 7 and connecting rod 15, passes to movement 2, movement 2 passes to again pointer 5, then by tested SF
6gas density value indicates on dial.
If gas leakage, its density value drops to a certain degree (reaching warning or locking value), Baden's pipe 6 produces corresponding to bottom offset, by temperature compensating element 7, make crossbeam 4 to bottom offset, the regulating part 141,142,143 on crossbeam 4 is just gradually from corresponding sensitive switch 91,92,93, time to a certain extent, corresponding sensitive switch 91,92,93 contact is just connected, and sends corresponding signal (reporting to the police or locking), realizes the SF in the equipment such as monitoring and controlling electric switch
6gas density, makes electric equipment trouble free service.If its density value increases, force value also raises accordingly, be elevated to a certain degree, Baden's pipe 6 also produces corresponding to top offset, by temperature compensating element 7, makes crossbeam 4 to top offset, regulating part 141,142,143 on crossbeam 4 is just to top offset, just promote corresponding sensitive switch 91,92,93, its contact just disconnects, and signal (reporting to the police or locking) is just removed.
Wide range sulfur hexafluoride gas density relay of the present invention due to contact operating grip 911,921,931 be stairstepping, and contact operating grip 911,921,931 is elastomeric material, can not be out of shape by pressure, which adds the actuating length scope of sensitive switch, gamut scope (-0.1-0.9MPa) display can be realized easily, particularly be very easy to the display realizing being initiated with-0.1MPa, just can show vacuum degree when vacuumizing, be very easy to apply.
In the present embodiment, its contact operating grip increases the area of the sensitive switch contact operating grip contacted with regulating part, increase the length of sensitive switch contact operating grip 911, at microswitch outer, sensitive switch reinforcing mechanisms is set, temperature compensating element is widened simultaneously, through process like this, just there is extraordinary performance, guarantee power grid security.
Embodiment two
Fig. 5-6 is the partial cutaway schematic of the wide range sulfur hexafluoride gas density relay of the embodiment of the present invention two, as shown in Figure 4, the wide range sulfur hexafluoride gas density relay of the embodiment of the present invention two comprises: joint, pedestal 1, movement 2, end seat 3, crossbeam 4, watchcase, dial, pointer 5, Baden's pipe 6, temperature compensating element 7, junction block 8, several sensitive switches 91,92,93, printed circuit board 10, electric wire 13, several regulating parts 141,142,143, connecting rod 15, watch crystal, the composition such as cover circle.
Joint is fixed on watchcase, and movement 2 is fixed on pedestal 1.One end of Baden's pipe 6 is welded on pedestal 1 and is also communicated with it, and the other end is welded on end seat 3, and end seat 3 is connected with one end of temperature compensating element 7, and the other end of temperature compensating element 7 is connected with crossbeam 4.Crossbeam 4 is fixed with several regulating parts 141,142,143.Crossbeam 4 is connected with connecting rod 15 again, and connecting rod 15 is connected with movement 2 again.Several sensitive switches 91,92,93 are separately fixed on printed circuit board 10, and printed circuit board 10 is fixed on fixed head, and fixed head is arranged on again on pedestal 1.
Difference from Example 1 is, several sensitive switch 91,92,93 correspondences are arranged on the below of each regulating part 141,142,143.When crossbeam 4 drives regulating element 141,142,143 to move down, regulating element 141,142,143 applies pressure to operating grip 911,912,913 respectively.For sensitive switch 91, such as, shown in Fig. 6, the first-hand shank of operating grip 911 is split climax 906 and is applied pressure; After acquiring a certain degree, first-hand shank and sensitive switch body 900 surface contact, no longer change, due to the step structure of operating grip, second handle portion still can continue pressurized and move, and therefore crossbeam 4 still can continue to move down, thus can show greater amount journey scope.
Wide range sulfur hexafluoride gas density relay of the present invention due to contact operating grip 911,921,931 be stairstepping, and contact operating grip 911,921,931 is elastomeric material, can not be out of shape by pressure, which adds the actuating length scope of sensitive switch, gamut scope (-0.1-0.9MPa) display can be realized easily, particularly be very easy to the display realizing being initiated with-0.1MPa, just can show vacuum degree when vacuumizing, be very easy to apply.
As shown in Figure 2 and Figure 4, its contact operating grip increases the area of the sensitive switch contact operating grip contacted with regulating part, namely the front end of each contact operating grip and the effective width W of regulating part contact site are 4.4-18mm, increase the length L (length L is 21-50mm) of sensitive switch contact operating grip, at microswitch outer, sensitive switch reinforcing mechanisms is set, temperature compensating element is widened simultaneously, through process like this, just there is extraordinary performance, guarantee power grid security.
Embodiment three
See Fig. 7, another technical scheme of wide range sulfur hexafluoride gas density relay of the present invention adopts the face of the corresponding contact operating grip of sensitive switch to be step, for sensitive switch 91, sensitive switch body 900 is planar structure in the side of oriented manipulation handle 911, and be the first plane near the position of operating grip 911 tie point, first plane passes through the chamfered transition of a forward upward inclination to the second plane, thus between the first plane and the second plane forming station stepped structure, difference in height D >=1mm between the first plane and the second plane.Now, operating grip 911 can be a straight handle portion, also can also be step-like structure as a kind of in embodiment.
During operating grip 911 pressurized, to sensitive switch body 900 with mobile, and with the first plane contact, crossbeam 4 drives regulating element to continue to exert pressure, and operating grip 911 front end is continued to the second plane motion, thus crossbeam can have larger range of movement.
Wide range sulfur hexafluoride gas density relay of the present invention, because the contact operating grip 911,921,931 of sensitive switch has made important innovations, design becomes stairstepping, and contact operating grip 911,921,931 is elastomeric material, can not be out of shape by pressure, which adds the actuating length scope of sensitive switch, gamut scope (-0.1 to 0.9MPa) display can be realized easily, particularly be very easy to the display realizing being initiated with-0.1MPa, just can show vacuum degree when vacuumizing, be very easy to apply.Or, sensitive switch body is planar structure in the side of oriented manipulation handle, and be the first plane near the position of operating grip tie point, first plane passes through the chamfered transition of a forward upward inclination to the second plane, thus between the first plane and the second plane forming station stepped structure, and difference in height D >=1mm between the first plane and the second plane, contact operating grip 911, 921, 931 is elastomeric material, can not be out of shape by pressure equally, also the actuating length scope of sensitive switch is just added so equally, gamut scope (-0.1 to 0.9MPa) display can be realized easily.
In a word, wide range sulfur hexafluoride gas density relay of the present invention have resistance to shock again good, precision is high, the advantage of good electric property, long working life, gamut indication range.Have employed sensitive switch as its signal output contact, so the electric terminal of the technology of the present invention density monitor has extraordinary electric property, use reliable, contacts is reliable, and the life-span is long, and this is also very large innovative point of the present invention and feature.
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 (16)
1. a sensitive switch, it is characterized in that, comprise sensitive switch body and operating grip, splicing ear and switch stretch out from sensitive switch body respectively, operating grip one end is connected to sensitive switch, and this is external, and the other end strides across switch and extends to sensitive switch one end; Wherein,
Described operating grip comprises first-hand shank and second handle portion, and second handle portion is positioned at the front end of first-hand shank; Be connected by connecting portion between first-hand shank and second handle portion, to make first-hand shank place plane between second handle portion place plane and sensitive switch body, or to make second handle portion place plane between first-hand shank place plane and sensitive switch body; And/or
The side of described sensitive switch body attended operation handle, above operating grip, be provided with the first plane and the second plane, the second plane is in the front of the first plane, and the first plane is lower than the second plane.
2. sensitive switch according to claim 1, is characterized in that, forming station stepped structure between the first-hand shank of described operating grip and second handle portion.
3. sensitive switch according to claim 2, is characterized in that, between the step-like structure formed between the first-hand shank of described operating grip and second handle portion, difference in height is preferably >=1mm.
4. sensitive switch according to claim 1, is characterized in that, described switch is between first-hand shank and sensitive switch body.
5. sensitive switch according to claim 1, is characterized in that, described first-hand shank and second handle portion and connecting portion are integral type structure or dismountable structure.
6. sensitive switch according to claim 1, is characterized in that, between described first plane and the second plane, difference in height is preferably >=1mm.
7. sensitive switch according to claim 1, is characterized in that, described operating grip both sides are provided with two downward baffle plates, and described height of baffle plate is 3-18mm.
8. sensitive switch according to claim 1, is characterized in that, the front end of operating grip is also provided with downward end plate, and this end plate jointly forms a semi-enclosed cell body district together with two side shields in the front end of contact operating grip.
9. sensitive switch according to claim 8, is characterized in that, described end plate height is 3-18mm, and described cell body sector width is 4.4-18mm.
10. sensitive switch according to claim 1, is characterized in that, described operating grip total length is 21-50mm.
11. 1 kinds of wide range sulfur hexafluoride gas density relays, is characterized in that, comprise housing and/or pedestal, also comprise signaling gear and indicating value indication mechanism, and signaling gear and indicating value indication mechanism are fixed on pedestal and/or in housing; Wherein,
Described signaling gear comprises sensitive switch according to claim 1 as contact, and sensitive switch body is fixing on a printed circuit or in housing.
12. wide range sulfur hexafluoride gas density relays according to claim 11, is characterized in that, comprise crossbeam, crossbeam is also fixed with regulating element, and regulating element points to the operating grip of sensitive switch.
13. wide range sulfur hexafluoride gas density relays according to claim 12, is characterized in that, described indicating value indication mechanism comprises movement, dial and pointer, and pointer is connected on movement, and dial is fixed on movement or in housing; Described indicating value indication mechanism also comprises: actuator, temperature compensating element and end seat, and wherein: movement is arranged on pedestal, actuator one end connects pedestal, other end link seat; Temperature compensating element one end link seat, the other end connects described crossbeam, crossbeam motion under actuator and/or temperature compensating element drive.
14. wide range sulfur hexafluoride gas density relays according to claim 13, is characterized in that, described actuator is Baden's pipe or bellows.
15. wide range sulfur hexafluoride gas density relays according to claim 13, is characterized in that, described temperature compensating element is selected from the compensating device that bimetal leaf is formed or the compensating device being filled with compensation gas formation adopting sealing.
16. wide range sulfur hexafluoride gas density relays according to claim 14, is characterized in that, the width of described Baden pipe is >=20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510703753.3A CN105206470A (en) | 2015-10-27 | 2015-10-27 | Sulfur hexafluoride gas density relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510703753.3A CN105206470A (en) | 2015-10-27 | 2015-10-27 | Sulfur hexafluoride gas density relay |
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| CN105206470A true CN105206470A (en) | 2015-12-30 |
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| CN201510703753.3A Pending CN105206470A (en) | 2015-10-27 | 2015-10-27 | Sulfur hexafluoride gas density relay |
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| CN (1) | CN105206470A (en) |
Cited By (3)
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| CN107863268A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay superpressure signal realizes the method kept |
| CN109103050A (en) * | 2018-09-28 | 2018-12-28 | 上海乐研电气有限公司 | A method of improving gas density relay precision |
| WO2020063606A1 (en) * | 2018-09-28 | 2020-04-02 | 上海乐研电气有限公司 | High-precision sf6 gas density relay and method for implementing same |
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| CN102664123A (en) * | 2012-05-25 | 2012-09-12 | 河北省电力公司检修分公司 | Anti-vibration pointer type SF6 (sulfur hexafluoride) gas density relay |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863268A (en) * | 2017-11-29 | 2018-03-30 | 上海乐研电气有限公司 | A kind of gas density relay superpressure signal realizes the method kept |
| CN107863268B (en) * | 2017-11-29 | 2019-12-10 | 上海乐研电气有限公司 | Method for realizing holding of overpressure signal of gas density relay |
| CN109103050A (en) * | 2018-09-28 | 2018-12-28 | 上海乐研电气有限公司 | A method of improving gas density relay precision |
| WO2020063606A1 (en) * | 2018-09-28 | 2020-04-02 | 上海乐研电气有限公司 | High-precision sf6 gas density relay and method for implementing same |
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