CN101847544A - Sulfur hexafluoride gas density relay - Google Patents
Sulfur hexafluoride gas density relay Download PDFInfo
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- CN101847544A CN101847544A CN201010171798A CN201010171798A CN101847544A CN 101847544 A CN101847544 A CN 101847544A CN 201010171798 A CN201010171798 A CN 201010171798A CN 201010171798 A CN201010171798 A CN 201010171798A CN 101847544 A CN101847544 A CN 101847544A
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- Prior art keywords
- gas density
- sensitive switch
- sulfur hexafluoride
- density relay
- compensating element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H33/563—Gas reservoirs comprising means for monitoring the density of the insulating gas
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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
Abstract
The invention discloses a sulfur hexafluoride gas density relay, which comprises a shell, a base, an end base, a bourdon tube, a temperature compensating element, and a plurality of micro switches serving as signal generators of the gas density relay, wherein one end of the bourdon tube is connected to the base, while the other end is connected with one end of the temperature compensating element by the end base; the micro switches are arranged on the base or in the shell, and are provided with connection point operating handles; the gas density relay further comprises a displacement magnification mechanism, wherein the displacement magnification mechanism has an initial end which is connected with the other end of the temperature compensating element, and an amplifying end which drives the connection point operating handles of the micro switches to connect or disconnect connection points on the micro switches; and when a gas density value changes, the bourdon tube and the temperature compensating element displace, and the displacement is magnified by the displacement magnification mechanism and then transmitted to the micro switches to make the micro switches send corresponding signals. As a result, the function of the density relay is completed.
Description
Technical field
The present invention relates to a kind of gas density relay, relate in particular to a kind of gas density relay that is applied on the sulfur hexafluoride electrical equipment.
Background technology
The sulphur hexafluoride electric product has been widely used in power department, and industrial and mining enterprises have promoted the fast development of power industry.The reliable and secure operation that guarantees the sulphur hexafluoride electric product has become one of vital task of power department.The arc-extinguishing medium of sulphur hexafluoride electric product and dielectric are sulfur hexafluoride gas, can not leak gas, if leak gas, just can not guarantee the reliable and secure operation of sulphur hexafluoride electric product.So the sulfur hexafluoride density value of monitoring sulphur hexafluoride electric product is very necessary.At present, being used for monitoring sulfur hexafluoride gas density generally adopts a kind of pointer sulfur hexafluoride gas density relay (Fig. 1) of machinery to monitor sulfur hexafluoride gas density, promptly this relay can be reported to the police and locking when gas leakage takes place the sulphur hexafluoride electric product, can also show on-the-spot density value simultaneously.This density monitor generally adopts dial 1, pointer 2, single Bourdon tube 3, single temperature compensating element 4, support 5, movement 6 and hairspring type magnetic to help formula electric contact 7.When contact (reporting to the police or locking) was closed, its closing force only depends on the small power of contact hairspring, helps the power of formula even add magnetic, and was also still very little, therefore extremely be afraid of to shake, and the contact closure was also firm inadequately.And the most important thing is when being subjected to oxidation or polluting, the phenomenon of electric contact 7 loose contacts often to take place, cause serious consequence.Ben in addition is that magnetic helps the breaking speed of formula electric contact slower, and contact capacity is little, causes useful life short.So this density monitor just is difficult to guarantee electric property and life-span that in case go wrong, the user has only replacing again, causes economic loss, can not finely meet the demands.
Help the shortcoming of formula electric contact in view of above-mentioned hairspring type magnetic, those skilled in the art develop the no oil type sulfur hexafluoride gas density relay that another kind of contact is a sensitive switch again, the structure of this sulfur hexafluoride gas density relay is according to Fig. 2 and shown in Figure 3, it comprises dial 1, pointer 2, Bourdon tube 3, temperature compensating element 4, support 5, have the movement 6 that shows enlarger, connecting rod 7, housing 8, joint 9, sensitive switch 101,102,103, regulating part 111,112,113, linking arm 12, contact motion arm 13, end seat 14, junction block 15, watch crystal 16, case 17, printed circuit board 18, location-plate 19, fixed head 20, electric wire 21 and sulfur hexafluoride gas feed tube 22, wherein, joint 9, junction block 15, watch crystal 16, case 17 and support 5 are separately fixed on the housing 8.Movement 6 and fixed head 20 are installed in respectively on the support 5, and pointer 2 and dial 1 are separately fixed on the movement 6.One end of Bourdon tube 3 is welded on the support 5, the other end is connected with an end of temperature compensating element 4 by end seat 14, the other end of temperature compensating element 4 is connected with linking arm 12, and an end of linking arm 12 is connected with an end of connecting rod 7, and the other end of connecting rod 7 is connected with movement 6.Contact motion arm 13 is the extension of linking arm 12, is fixed with regulating part 111,112,113 on the contact motion arm 13.Sensitive switch 101,102,103 is welded on respectively on the printed circuit board 18, and printed circuit board 18 is installed on the fixed head 20, and fixed head 20 is installed in again on the support 5.Sensitive switch 101 is fixed on the below of regulating part 111, and sensitive switch 102 is fixed on the below of regulating part 112, and sensitive switch 103 is fixed on the below of regulating part 113.Be respectively equipped with operating grip 1011,1021,1031 on each sensitive switch.Location-plate 19 rear ends are fixed on the movement 6, and front end extends to end seat 14 belows of the end that Bourdon tube 3 links to each other with temperature compensating element 4.The function of location-plate 19 is: when sulfur hexafluoride gas density dropped to certain value, restriction Bourdon tube 3 moved down, the protection sensitive switch, and then protection contact motion arm 12 do not damaged by pressure and is out of shape, and makes whole system keep reliably working.
The contact of sensitive switch 101,102,103 is connected on the junction block 15 from printed circuit board 18 by electric wire 21, and junction block 15 is fixed on the housing 8.Watch crystal 16, case 17 are separately fixed on the housing 8, can protect its internal mechanism to avoid mechanical damage and dirt, rainwater is invaded.One end of sulfur hexafluoride gas feed tube 22 is connected with support 5, and positiver sealing, and the other end of sulfur hexafluoride gas feed tube 22 is connected with joint 9, and positiver sealing.
Though the sensitive switch that above-mentioned sulfur hexafluoride gas density relay adopted has the advantage of good electric property, because Bourdon tube 3 is along with variation of gas pressure, its pipe end can be subjected to displacement, but its displacement is less; And temperature compensating element 4 also is subjected to displacement along with variation of temperature, but its displacement is also less accordingly; Therefore, when the gas density value changed, Bourdon tube 3 and temperature compensating element 4 will produce displacement, and displacement is all less.The displacement of Bourdon tube 3 and temperature compensating element 4 drives pointer 2 by the demonstration enlarger on the movement 6 again and is presented on the dial 1.Therefore, make gas density relay can not realize high accuracy, and resistance to shock is relatively poor, is difficult to guarantee system's reliably working.
In sum, the contact of the good inadequately or contact of the electric property of present sulfur hexafluoride gas density relay is stable inadequately, working life is not long, or resistance to shock bad, be difficult to guarantee system's reliably working, or precision not high, be difficult to meet the demands.
Summary of the invention
In order to solve the problems referred to above that prior art exists, the object of the present invention is to provide that a kind of precision height, the good electric property of signal generator, contact contact, long working life, sulfur hexafluoride gas density relay that resistance to shock is high, be used for controlling and monitoring the density of airtight container sulfur hexafluoride gas or its mist, and at the gas leakage situation that occurs in the sulfur hexafluoride electrical equipment, in time send alarm signal and block signal, for ensureing that electric power safety plays effect.
Realize that a kind of technical scheme of above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, comprise housing, be arranged on the support in the housing, the end seat, Bourdon tube, temperature compensating element and some sensitive switches as the gas density relay signal generator, one end of described Bourdon tube is connected on the described support, the other end links to each other with an end of described temperature compensating element by described end seat, described sensitive switch is installed in the described housing and has the contact operating grip, described gas density relay also comprises a displacement amplifying mechanism, the initiating terminal of this displacement amplifying mechanism is connected with the other end of described temperature compensating element, and amplify the contact operating grip that end drives described sensitive switch, the contact on the described sensitive switch is switched on or switched off.When the gas density value changes, described Bourdon tube and temperature compensating element produce displacement, and this displacement passes to described sensitive switch after amplifying by described displacement amplifying mechanism, makes described sensitive switch send corresponding signal, finishes the function of density monitor.
Above-mentioned sulfur hexafluoride gas density relay, wherein: the initiating terminal of described displacement amplifying mechanism is fixedlyed connected with the other end of described temperature compensating element with linking arm by connecting rod, the amplification end of described displacement amplifying mechanism is switched on or switched off by the contact that Signal Regulation mechanism drives described sensitive switch, the corresponding setting of contact operating grip of described Signal Regulation mechanism and described sensitive switch.
Above-mentioned sulfur hexafluoride gas density relay, wherein: described displacement amplifying mechanism is gear drive, lever transmission or fan-shaped curved surface transmission mechanism.
Above-mentioned sulfur hexafluoride gas density relay, wherein: described displacement amplifying mechanism has damping mechanism.
Above-mentioned sulfur hexafluoride gas density relay, wherein: described Signal Regulation mechanism is eccentric wheel, disk or pole.
Above-mentioned sulfur hexafluoride gas density relay, wherein: the switch governor motion that is used to regulate described sensitive switch position also is installed on the described support or in the housing, and described sensitive switch is fixed in the described housing by this switch governor motion.
Above-mentioned sulfur hexafluoride gas density relay, wherein: the width of described Bourdon tube is 25～60mm; Described temperature compensating element is bimetallic material or the airtight compensation Bourdon tube that has been filled with the gas that temperature-compensating uses.
Above-mentioned sulfur hexafluoride gas density relay, wherein: described density monitor also comprises pointer and dial, described dial is fixed on the described support or in the housing, described pointer is fixed on the amplification end of described displacement amplifying mechanism and shows the gas density value in conjunction with described dial;
Described sensitive switch can be installed in the optional position in the described housing.
Realize that the another kind of technical scheme of above-mentioned purpose is: a kind of sulfur hexafluoride gas density relay, comprise relatively independent signal controlling part and indicating value display part, wherein:
Described signal control part branch comprises that control wave steps on pipe, the control temperature compensating element, the control support, the control end seat, Signal Regulation mechanism, the sensitive switch and the displacement amplifying mechanism that have the contact operating grip, one end of described control Bourdon tube is connected on the described control support, the other end links to each other with an end of described control temperature compensating element by described control end seat, described sensitive switch is installed on the described control support or in the housing, the initiating terminal of described displacement amplifying mechanism is connected with the other end of described control temperature compensating element, and amplify end drives described sensitive switch by described Signal Regulation mechanism contact operating grip, contact on the described sensitive switch is switched on or switched off, described Signal Regulation mechanism and the corresponding setting of contact operating grip on the described sensitive switch;
Described indicating value display part comprises demonstration Bourdon tube, displays temperature compensating element,, shows support, display end seat, shows enlarger and pointer, one end of described demonstration Bourdon tube is connected on the described demonstration support, the other end links to each other with an end of described displays temperature compensating element, by described display end seat, the other end of described displays temperature compensating element, is connected with the initiating terminal of described demonstration enlarger, and described pointer is connected with the amplification end of described demonstration enlarger.
Above-mentioned sulfur hexafluoride gas density relay, wherein: described control support and demonstration support can unite two into one.
Sulfur hexafluoride gas density relay of the present invention makes it compared with prior art owing to adopted above technical scheme, has following tangible advantage and characteristics:
Owing to adopt the displacement of Bourdon tube and temperature compensating element this displacement to be amplified, go control-signals generator (some sensitive switches) again through displacement amplifying mechanism.This displacement amplifying mechanism is according to the size control sensitive switch of gas density value, make sensitive switch send corresponding signal, finish the function of density monitor, thereby the enlarger that has overcome prior art has only the defective that shows the function of amplifying, make gas density relay have advantages such as precision height, resistance to shock height, the good electric property of signal generator, contact contact, long working life, guaranteed system's reliably working, be a kind of sulfur hexafluoride gas density relay of genuine performance brilliance, can be applied on the sulfur hexafluoride electrical equipment well.In addition, sulfur hexafluoride gas density relay of the present invention can also be sulfur hexafluoride gas mixture density monitor or Compressed Gas density monitor.
Description of drawings
Fig. 1 is a kind of structural representation of prior art pointer sulfur hexafluoride gas density relay;
Fig. 2 is the another kind of structural representation of prior art pointer sulfur hexafluoride gas density relay;
Fig. 3 is the partial side view of Fig. 2;
Fig. 4 is first kind of structural representation of sulfur hexafluoride gas density relay of the present invention;
Fig. 5 is the partial side view of Fig. 4;
Fig. 6 is a displacement amplifying mechanism structural representation in the sulfur hexafluoride gas density relay of the present invention;
Fig. 7 is a kind of working state figure of sensitive switch in the sulfur hexafluoride gas density relay of the present invention;
Fig. 8 is second kind of working state figure of sensitive switch in the sulfur hexafluoride gas density relay of the present invention;
Fig. 9 is the third working state figure of sensitive switch in the sulfur hexafluoride gas density relay of the present invention;
Figure 10 is the 4th a kind of working state figure of sensitive switch in the sulfur hexafluoride gas density relay of the present invention;
Figure 11 is second kind of structural representation of sulfur hexafluoride gas density relay of the present invention;
Figure 12 is the third structural representation of sulfur hexafluoride gas density relay of the present invention;
Figure 13 is the 4th a kind of structural representation of sulfur hexafluoride gas density relay of the present invention;
Figure 14 is the 5th a kind of structural representation of sulfur hexafluoride gas density relay of the present invention;
Figure 15 is the 6th a kind of structural representation of sulfur hexafluoride gas density relay of the present invention;
Figure 16 a and Figure 16 b are respectively the structural representation and the end view of the Signal Regulation mechanism in the 6th kind of sulfur hexafluoride gas density relay of the present invention;
Figure 17 be sulfur hexafluoride gas density relay of the present invention in the structural representation of another embodiment of Signal Regulation mechanism;
Figure 18 is the partial schematic diagram of the 7th kind of structure of sulfur hexafluoride gas density relay of the present invention;
Figure 19 is the 8th a kind of structural representation of sulfur hexafluoride gas density relay of the present invention.
Embodiment
In order to understand technical scheme of the present invention better, also in conjunction with the accompanying drawings the present invention is described in detail below by specific embodiment:
See also Fig. 4 to Figure 10, first kind of sulfur hexafluoride gas density relay of the present invention, comprise Bourdon tube 3, temperature compensating element 4 (present case employing bimetallic material), support 5, displacement amplifying mechanism 6, connecting rod 7, housing 8, joint 9, sensitive switch 101,102,103, Signal Regulation mechanism 111,112,113, linking arm 13, end seat 14, junction block 15, watch crystal 16, case 17, electric wire 21 and switch reinforcing mechanisms 24, present embodiment is with three sensitive switches 101,102,103 as the gas density relay signal generator, and this gas density relay also has dial 1 and the pointer 2 that is used to show indicating value.
The width of Bourdon tube 3 is 25～60mm, in order to improve resistance to shock, the width of Bourdon tube 3 is elected 30～40mm as, one end of Bourdon tube 3 is connected on the support 5, the other end is welded on the end seat 14, this end seat 14 is connected with an end of temperature compensating element 4, and the other end of temperature compensating element 4 is connected with linking arm 13, this temperature compensating element 4 be shaped as U-shaped or Ω shape; Linking arm 13 is connected with an end of connecting rod 7 again, and the other end of connecting rod 7 is connected with the initiating terminal of displacement amplifying mechanism 6; Displacement amplifying mechanism 6 is gear drive, lever transmission or fan-shaped curved surface transmission mechanism, the displacement amplifying mechanism 6 of present embodiment is the gear drive (see figure 6), and it comprises machine mandrel 60, sector gear 61, central gear 63, hairspring 64, train wheel bridge 65, lower plate 66; Train wheel bridge 65 and lower plate 66 are fixed on the support 5 at interval and in parallel, connect a sector gear rotating shaft 610 between train wheel bridge 65 and the lower plate 66, the center of circle of sector gear 61 also radially one extend a transmission arm 611, sector gear 61 is installed in the sector gear rotating shaft 610, and an end of transmission arm 611 is connected with the other end of connecting rod 7 as the initiating terminal of displacement amplifying mechanism 6; Central gear 63 is fixedly mounted in the machine mandrel 60 and with sector gear 61 as the amplification end of displacement amplifying mechanism 6 and is connected with a joggle; Because the radius of the radius ratio central gear 63 of sector gear 61 is big 4～30 times, so can play amplification; Displacement amplifying mechanism 6 also has damping mechanism, and present embodiment is installed damping mechanism at an end of sector gear rotating shaft 610;
Three sensitive switches 101,102,103 be separately fixed on the support 5 or housing 8 in and can be installed in different directions; Sensitive switch 101,102,103 has contact operating grip 1011,1021,1031 respectively;
111,112,113 and three sensitive switch 101,102,103 corresponding pairs settings of Signal Regulation mechanism also are installed in respectively on the sun gear shaft 62, and sun gear shaft 62 constitutes one for the extension of machine mandrel 60 with machine mandrel 60; The Signal Regulation mechanism of present embodiment is that three compartment of terrains are installed in the eccentric wheel on the sun gear shaft 62.
Signal Regulation mechanism 111,112,113 drives contact operating grip 1011,1021,1031 according to gas density value and force value, and the contact on the sensitive switch 101,102,103 is switched on or switched off; The contact of sensitive switch is connected on the junction block 15 by electric wire 21, and junction block 15 is fixed on the housing 8; Joint 9 is fixed on the housing 8, and watch crystal 16, case 17 and sealing ring thereof are separately fixed on the housing 8, can protect housing 8 internal mechanisms to avoid mechanical damage and dirt, rainwater is invaded.One end of deferent is connected with support 5, and positiver sealing; The other end of deferent is connected with joint 9, and positiver sealing;
When the gas density value changes, Bourdon tube 3 and temperature compensating element 4 produce displacement, this displacement is delivered to the initiating terminal (sector gear 61) of displacement amplifying mechanism 6 by connecting rod 7, the amplification end of displacement amplifying mechanism 6 (central gear 63) is by Signal Regulation mechanism 111,112,113 with sensitive switch 101,102,103 contact operating grip 1011,1021,1031 connect, drive contact operating grip 1011 according to gas density value and force value, 1021,1031, make sensitive switch 101,102, contact on 103 is switched on or switched off, make sensitive switch send corresponding signal, finish the function of density monitor.
The operation principle of sulfur hexafluoride gas density relay of the present invention is based on flexible member Bourdon tube 3, utilizes the pressure and temperature of 4 pairs of variations of temperature compensating element to revise, the variation of reaction sulfur hexafluoride gas density.Promptly under the pressure effect of measured medium sulfur hexafluoride gas, because the effect of temperature compensating element 4 has been arranged, the variation of its density value, force value also changes accordingly, force the end of Bourdon tube 3 to produce corresponding strain-displacement,, pass to the machine mandrel 60 of displacement amplifying mechanism 6 by means of temperature compensating element 4 and connecting rod 7, machine mandrel 60 passes to pointer 2 again, then tested sulfur hexafluoride gas density value is indicated on dial 1.If leaked gas, its density value drops to a certain degree (reach and report to the police or the locking value), Bourdon tube 3 produces accordingly to bottom offset, by temperature compensating element 4, make linking arm 13 to bottom offset, pass to connecting rod 7, connecting rod 7 passes to the sector gear 61 of displacement amplifying mechanism 6, sector gear 61 passes to central gear 63 and amplifies, central gear 63 drives the sun gear shaft 62 (extension of machine mandrel 60, sun gear shaft 62 can be an one with machine mandrel 60, also can be that split is fixed together) rotate, the corresponding Signal Regulation of sun gear shaft 62 drives mechanism 111,112,113 rotate, when arriving to a certain degree, Signal Regulation mechanism 111,112,113 just trigger corresponding sensitive switch 101,102,103 contact operating grip 1011,1021,1031 (as shown in Figure 7), corresponding sensitive switch 101,102,103 contacts are just connected, send corresponding signal (reporting to the police or locking), reach the sulfur hexafluoride gas density in the equipment such as supervision and control electric switch, make the electric equipment trouble free service.If its density value has raise, force value also raises accordingly, be elevated to a certain degree, Bourdon tube 3 also produces accordingly to top offset, by temperature compensating element 4, make linking arm 13 to top offset, pass to connecting rod 7, connecting rod 7 passes to the sector gear 61 of displacement amplifying mechanism 6, sector gear 61 passes to central gear 63, central gear 63 drives sun gear shaft 62, the corresponding Signal Regulation of sun gear shaft 62 drives mechanism 111,112,113, when arriving to a certain degree, Signal Regulation mechanism 111,112,113 just do not trigger corresponding sensitive switch 101,102,103 (as shown in Figure 8), corresponding sensitive switch 101,102,103 contacts just disconnect, and signal (reporting to the police or locking) is just removed.
Sensitive switch 101,102,103 can adopt normal opened contact, also can adopt normally closed contact, and its installation site is unrestricted.(see figure 9) when the contact of sensitive switch 101,102,103 is in on-state, send corresponding signal (reporting to the police or locking), and contact (see figure 10) when off-state of corresponding sensitive switch 101,102,103, signal (reporting to the police or locking) is just removed; Otherwise (see figure 10) when the contact of sensitive switch 101,102,103 is in on-state is sent corresponding signal (report to the police or locking), and (see figure 9) during corresponding contact off-state, signal (reporting to the police or locking) is just removed.
Figure 11 is second kind of sulfur hexafluoride gas density relay of the present invention, also be provided with switch governor motion 24 in its housing 8, switch governor motion 24 is fixed on the support 5 or in the housing 8, sensitive switch 101,102,103 is fixed on this switch governor motion 24, can regulate the position of sensitive switch 101,102,103 by by-pass cock governor motion 24, and then realize various density set points.
Figure 12 is the third sulfur hexafluoride gas density relay of the present invention, and switch governor motion 24 wherein comprises disk spring 24A, has easy adjusting and positioning action, and then realizes various density set points.
Figure 13 is the 4th a kind of sulfur hexafluoride gas density relay of the present invention, and its sensitive switch 101,102,103 is installed between dial 1 and the displacement amplifying mechanism 6, and corresponding Signal Regulation mechanism 111,112,113 is installed in the machine mandrel 60.
Figure 14 is the 5th a kind of sulfur hexafluoride gas density relay of the present invention, its displacement amplifying mechanism is a lever transmission mechanism 25, this lever transmission mechanism 25 amplifies directly control contact operating grip 1011 of back to displacement, the contact of sensitive switch 10 is switched on or switched off, realizes the high accuracy of density monitor.
Figure 15 is the 6th a kind of sulfur hexafluoride gas density relay of the present invention, its Signal Regulation mechanism 11 one is fixedly mounted on the disk on the sun gear shaft 62, and three semi arch bulge loops 111,112,113 (seeing Figure 16 a and Figure 16 b) are gone up at interval and are provided with one heart on a surface of disk; Three sensitive switches 101,102,103 are separately fixed on the support 5 or in the housing 8, and three bulge loops, 111,112, the 113 corresponding pairs settings of three sensitive switches 101,102,103 and Signal Regulation mechanism 11, wherein, three sensitive switches 101,102,103 have contact operating grip 1011,1021,1031 (the contact operating grip of present embodiment is a drum-shape) respectively.Displacement amplifying mechanism 6 amplifies back control signal governor motion 11 with displacement, and Signal Regulation mechanism 11 control sensitive switches 101,102,103 are realized high-precision action.
Figure 17 is another embodiment of Signal Regulation mechanism, it is a pole 11, this pole 11 is fixedly mounted on the sun gear shaft 62 of displacement amplifying mechanism 6 by a connection piece 110, three sensitive switches 101,102,103 are separately fixed on the switch governor motion 24, and three sensitive switches 101,102,103 have respectively and pole 11 vertically disposed contact operating grips 1011,1021,1031.The sun gear shaft 62 of displacement amplifying mechanism 6 amplifies back control pole 11 with displacement and rotates, and when arriving to a certain degree, pole 11 triggers sensitive switch 101,102,103, realizes high-precision action.
Figure 18 is the 7th a kind of sulfur hexafluoride gas density relay of the present invention, its Signal Regulation mechanism 111 is fixed on the sun gear shaft 62 of displacement amplifying mechanism 6, sensitive switch 101 is separately fixed on the support 5 or in the housing 8, wherein, sensitive switch 101 is connected with contact operating grip 1011 (the contact operating grip of present embodiment is a drum-shape) respectively.Also be provided with a rotating shaft 26 on the support 5 or in the housing 8, the contact operating grip 1011 corresponding settings of rotating shaft 26 and sensitive switch 101.Displacement amplifying mechanism 6 amplifies back control signal governor motion 111 with displacement, and Signal Regulation mechanism 111 control rotating shaft 26 are rotated, and control sensitive switch 101 again by the rotation of rotating shaft 26 and realize high-precision action.Because the leverage of rotating shaft 26 has been arranged, just can realize that small power just can control sensitive switch 101, make its signal generator of density monitor of low-pressure also can adopt sensitive switch.
Figure 19 is the 8th a kind of sulfur hexafluoride gas density relay of the present invention, comprises relatively independent signal controlling part and signal display part, wherein:
The signal control part branch comprise control wave step on the pipe 3A, control temperature compensating element 4A, control support 5A, control end seat 14A, Signal Regulation mechanism 111,112,113, have contact operating grip 1011,1021,1031 sensitive switch 101,102,103 and displacement amplifying mechanism 6A, the end of control Bourdon tube 3A is connected on the control support 5A, the other end is connected on the control end seat 14A, this control end seat 14A is connected with the end of control temperature compensating element 4A, sensitive switch 101,102,103 are installed on the control support 5A or in the housing 8, the initiating terminal of displacement amplifying mechanism 6A is connected with the other end of control temperature compensating element 4A with linking arm 13A by connecting rod 7A, Signal Regulation mechanism 111,112,113 are installed on the amplification end that sun gear shaft 62A is displacement enlarger 6A, three sensitive switches 101,102,103 and Signal Regulation mechanism 111,112,113 corresponding pairs settings, and three sensitive switches 101,102,103 have contact operating grip 1011 respectively, 1021,1031; Displacement amplifying mechanism 6A will control the displacement of Bourdon tube 3A and control temperature compensating element 4A and amplify 111,112,113 actions of back control signal governor motion, make 111,112,113 control sensitive switches, 101,102,103 contact operating grips, 1011,1021,1031 actions of Signal Regulation mechanism, realize the high accuracy of density monitor;
The signal display part comprises demonstration Bourdon tube 3B, displays temperature compensating element, 4B, shows enlarger 6B, shows support 5B, display end seat 14B and pointer 2, an end that shows Bourdon tube 3B is connected on the demonstration support 5B, the other end is connected on the display end seat 14B, this display end seat 14B is connected with the end of displays temperature compensating element, 4B, and shows that the initiating terminal of enlarger 6B is connected with the other end of displays temperature compensating element, 4B with linking arm 13B by connecting rod 7B; Pointer 2 is installed on the display machines mandrel 60B.
Control Bourdon tube 3A in the control section and the demonstration Bourdon tube 3B in the display part are for being arranged side by side; In order to improve resistance to shock, the control Bourdon tube 3A in the control section can be vertical setting with the demonstration Bourdon tube 3B in the display part.Control support 5A and demonstration support 5B can unite two into one.
The sulfur hexafluoride gas density relay utilization control temperature compensating element 4A and the displays temperature compensating element, 4B of present embodiment revise the pressure and temperature that changes, and can react the variation of sulfur hexafluoride gas density.Demonstration Bourdon tube 3B in the display part is a flexible member, utilizes displays temperature compensating element, 4B that the pressure and temperature that changes is revised, the variation of reaction sulfur hexafluoride gas density.Promptly under the pressure effect of measured medium sulfur hexafluoride gas, because the effect of displays temperature compensating element, 4B has been arranged, the variation of its density value, force value also changes accordingly, force the not end that shows Bourdon tube 3B to produce corresponding strain and be subjected to displacement, by means of displays temperature compensating element, 4B, pass to demonstration enlarger 6B by connecting rod 7B, tested sulfur hexafluoride gas density value is presented on the dial by the pointer 2 that is installed on the amplification end (display machines mandrel 60B) that shows enlarger 6B.
In the sulfur hexafluoride gas density relay of present embodiment, control section and display part are relatively independent, it has the following advantages: can accomplish that actual act value and pointer show value are just the same, and traditional pointer density monitor, owing to exist switch resistance and magnetic to help formula power, always there are certain deviation in its actual operating value and pointer show value, make troubles to the user.
Present embodiment also can adopt a Bourdon tube, two enlargers, and it is separate reaching control and demonstration.
In sum, sulfur hexafluoride gas density relay of the present invention is because signal generator adopts sensitive switch, and the control of sensitive switch contact all by displacement amplifying mechanism by amplifying control afterwards, so precision height, resistance to shock height, contact good electric property, the life-span is long, the temperature-compensating performance is more accurate.
Those of ordinary skill in the art will be appreciated that, above embodiment only be used for illustrating of the present invention, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (10)
1. sulfur hexafluoride gas density relay, comprise housing, be arranged on the support in the housing, the end seat, Bourdon tube, temperature compensating element and some sensitive switches as the gas density relay signal generator, one end of described Bourdon tube is connected on the described support, the other end links to each other with an end of described temperature compensating element by described end seat, described sensitive switch is installed in the described housing and has the contact operating grip, it is characterized in that: described gas density relay also comprises a displacement amplifying mechanism, the initiating terminal of this displacement amplifying mechanism is connected with the other end of described temperature compensating element, and amplify the contact operating grip that end drives described sensitive switch, the contact on the described sensitive switch is switched on or switched off;
When the gas density value changes, described Bourdon tube and temperature compensating element produce displacement, and this displacement passes to described sensitive switch after amplifying by described displacement amplifying mechanism, makes described sensitive switch send corresponding signal, finishes the function of density monitor.
2. sulfur hexafluoride gas density relay according to claim 1, it is characterized in that: the initiating terminal of described displacement amplifying mechanism is fixedlyed connected with the other end of described temperature compensating element with linking arm by connecting rod, the amplification end of described displacement amplifying mechanism is switched on or switched off by the contact that Signal Regulation mechanism drives described sensitive switch, the corresponding setting of contact operating grip of described Signal Regulation mechanism and described sensitive switch.
3. sulfur hexafluoride gas density relay according to claim 1 and 2 is characterized in that: described displacement amplifying mechanism is gear drive, lever transmission or fan-shaped curved surface transmission mechanism.
4. sulfur hexafluoride gas density relay according to claim 3 is characterized in that: described displacement amplifying mechanism has damping mechanism.
5. sulfur hexafluoride gas density relay according to claim 2 is characterized in that: described Signal Regulation mechanism is eccentric wheel, disk or pole.
6. sulfur hexafluoride gas density relay according to claim 1, it is characterized in that: the switch governor motion that is used to regulate described sensitive switch position also is installed on the described support or in the housing, and described sensitive switch is fixed in the described housing by this switch governor motion.
7. sulfur hexafluoride gas density relay according to claim 1 is characterized in that: the width of described Bourdon tube is 25～60mm; Described temperature compensating element is bimetallic material or the airtight compensation Bourdon tube that has been filled with the gas that temperature-compensating uses.
8. sulfur hexafluoride gas density relay according to claim 1, it is characterized in that: described density monitor also comprises pointer and dial, described dial is fixed on the described support or in the housing, described pointer is fixed on the amplification end of described displacement amplifying mechanism and shows the gas density value in conjunction with described dial;
Described sensitive switch can be installed in the optional position in the described housing.
9. a sulfur hexafluoride gas density relay comprises relatively independent signal controlling part and indicating value display part, it is characterized in that:
Described signal control part branch comprises that control wave steps on pipe, the control temperature compensating element, the control support, the control end seat, Signal Regulation mechanism, the sensitive switch and the displacement amplifying mechanism that have the contact operating grip, one end of described control Bourdon tube is connected on the described control support, the other end links to each other with an end of described control temperature compensating element by described control end seat, described sensitive switch is installed on the described control support or in the housing, the initiating terminal of described displacement amplifying mechanism is connected with the other end of described control temperature compensating element, and amplify end drives described sensitive switch by described Signal Regulation mechanism contact operating grip, contact on the described sensitive switch is switched on or switched off, described Signal Regulation mechanism and the corresponding setting of contact operating grip on the described sensitive switch;
Described indicating value display part comprises demonstration Bourdon tube, displays temperature compensating element,, shows support, display end seat, shows enlarger and pointer, one end of described demonstration Bourdon tube is connected on the described demonstration support, the other end links to each other with an end of described displays temperature compensating element, by described display end seat, the other end of described displays temperature compensating element, is connected with the initiating terminal of described demonstration enlarger, and described pointer is connected with the amplification end of described demonstration enlarger.
10. sulfur hexafluoride gas density relay according to claim 9 is characterized in that: described control support and demonstration support can unite two into one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171798A CN101847544A (en) | 2010-05-14 | 2010-05-14 | Sulfur hexafluoride gas density relay |
| PCT/CN2011/073970 WO2011140986A1 (en) | 2010-05-14 | 2011-05-12 | Sulfur hexafluoride gas density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171798A CN101847544A (en) | 2010-05-14 | 2010-05-14 | Sulfur hexafluoride gas density relay |
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| Publication Number | Publication Date |
|---|---|
| CN101847544A true CN101847544A (en) | 2010-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010171798A Pending CN101847544A (en) | 2010-05-14 | 2010-05-14 | Sulfur hexafluoride gas density relay |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101847544A (en) |
| WO (1) | WO2011140986A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140986A1 (en) * | 2010-05-14 | 2011-11-17 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN102543571A (en) * | 2012-02-14 | 2012-07-04 | 上海乐研电气科技有限公司 | Anti-vibration sulfur hexafluoride gas density relay |
| CN103456562A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN103456563A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN103474290A (en) * | 2013-09-18 | 2013-12-25 | 上海乐研电气科技有限公司 | Adjusting mechanism of microswitch of sulfur hexafluoride gas density relay |
| CN103594284A (en) * | 2013-11-20 | 2014-02-19 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN104282485A (en) * | 2014-10-31 | 2015-01-14 | 国家电网公司 | Remote-transmission sulfur hexafluoride gas density relay |
| 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 |
| US11885827B2 (en) | 2020-03-11 | 2024-01-30 | Shanghai Roye Electric Co., Ltd. | High anti-vibration gas density monitor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213214B (en) * | 2017-07-03 | 2024-04-02 | 国网安徽省电力公司电力科学研究院 | Mixed gas density controller |
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| CN101847544A (en) * | 2010-05-14 | 2010-09-29 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
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- 2010-05-14 CN CN201010171798A patent/CN101847544A/en active Pending
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| US3749865A (en) * | 1971-02-24 | 1973-07-31 | Bbc Brown Boveri & Cie | Temperature responsive control switch with bi-metallic disk means |
| CN2809852Y (en) * | 2005-07-24 | 2006-08-23 | 秦迎祥 | Pressure controller |
| CN1971795A (en) * | 2005-11-23 | 2007-05-30 | 苏丽芳 | Shakeproof type sulfur hexafluoride gas density relay |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140986A1 (en) * | 2010-05-14 | 2011-11-17 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN102543571A (en) * | 2012-02-14 | 2012-07-04 | 上海乐研电气科技有限公司 | Anti-vibration sulfur hexafluoride gas density relay |
| CN103456562B (en) * | 2013-09-18 | 2016-06-15 | 上海乐研电气科技有限公司 | A kind of sulfur hexafluoride gas density relay |
| CN103456563A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN103474290A (en) * | 2013-09-18 | 2013-12-25 | 上海乐研电气科技有限公司 | Adjusting mechanism of microswitch of sulfur hexafluoride gas density relay |
| CN103474290B (en) * | 2013-09-18 | 2015-10-21 | 上海乐研电气科技有限公司 | A kind of governor motion of sensitive switch of sulfur hexafluoride gas density relay |
| CN103456562A (en) * | 2013-09-18 | 2013-12-18 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN103456563B (en) * | 2013-09-18 | 2016-06-15 | 上海乐研电气科技有限公司 | A kind of sulfur hexafluoride gas density relay |
| CN103594284A (en) * | 2013-11-20 | 2014-02-19 | 上海乐研电气科技有限公司 | Sulfur hexafluoride gas density relay |
| CN103594284B (en) * | 2013-11-20 | 2016-01-20 | 上海乐研电气科技有限公司 | A kind of sulfur hexafluoride gas density relay |
| CN104282485A (en) * | 2014-10-31 | 2015-01-14 | 国家电网公司 | Remote-transmission sulfur hexafluoride gas density relay |
| 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 |
| US11885827B2 (en) | 2020-03-11 | 2024-01-30 | Shanghai Roye Electric Co., Ltd. | High anti-vibration gas density monitor |
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| WO2011140986A1 (en) | 2011-11-17 |
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Application publication date: 20100929 |