CN107863271A - A kind of high antivibration gas density relay - Google Patents
A kind of high antivibration gas density relay Download PDFInfo
- Publication number
- CN107863271A CN107863271A CN201711224008.6A CN201711224008A CN107863271A CN 107863271 A CN107863271 A CN 107863271A CN 201711224008 A CN201711224008 A CN 201711224008A CN 107863271 A CN107863271 A CN 107863271A
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- Prior art keywords
- density relay
- display
- gas density
- bellows
- chassis
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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
- H01H35/32—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by bellows
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of high antivibration gas density relay, including sealed air chamber, and signaling gear and indicating value indication mechanism inside sealed air chamber；Signaling gear includes bellows, and the microswitch being opened or closed by bellows control；Indicating value indication mechanism includes：Display end seat, the display Baden pipe that one end is connected with display end seat, the movement and the pointer on movement driven on chassis, by the display Baden pipe of indicating value indication mechanism, and dial.High antivibration gas density relay provided by the invention, compensation gas is provided with sealed air chamber, compensation gas plays a part of temperature-compensating and antivibration simultaneously, improves the precision of gas density relay, reduces the weight of production cost and product.
Description
Technical field
The present invention relates to technical field of electric power, and in particular to a kind of high antivibration gas density relay, it is particularly a kind of exhausted
The high antivibration gas density relay of die mould.
Background technology
Electric product has been widely used the fast development in power department, industrial and mining enterprises, promoting power industry.Electrically
The arc-extinguishing medium and dielectric of product is gas, and gas leakage easily occurs, and cannot ensure that electric product is reliable, pacifies after gas leakage
Row for the national games, therefore, how to ensure the reliable of electric product, safe operation as one of vital task of power department.
At present, for pressing the sulfur hexafluoride gas of the sulfur hexafluoride gas density in sulfur hexafluoride electrical equipment in monitoring
The load cell that the signaling gear (signal control portion) of density monitor typically uses is Baden pipe, the contact used for magnetic
Help formula contact, its contact exist contact it is bad, the shortcomings that its resistance to shock difference, it is difficult to ensure the reliable and secure operation of power network.Institute
So that there is an urgent need to innovate.In addition, the pressure that gas density relay on the market is shown at present is relative pressure, this gas
Density monitor disclosure satisfy that in general workplace, but for plateau or relatively low low lying areas, use this gas
Density monitor can be very inconvenient.And the temperature difference between the density monitor installation site and electrical equipment body of some occasions
Greatly, common gas density relay can not meet requirement of these occasions to Product Precision, therefore, it is necessary to design a kind of exhausted
To the gas density relay of pressure-type, apply in middle voltage electrical field.
The content of the invention
The present invention provides a kind of high antivibration gas density relay, for solving the lithium of existing middle pressure technical field
The unreliable problem of contacts of sulphur gas density relay, the problem of resistance to shock difference, while easily batch production.
High antivibration gas density relay provided by the invention, including sealed air chamber, and in the sealed air chamber
The signaling gear and indicating value indication mechanism in portion；
The signaling gear includes load cell bellows, and the fine motion being opened or closed by bellows control
Switch, the microswitch are electrically connected with junction block, and alarm signal is transmitted to the caution device of outside；
The indicating value indication mechanism includes：Display end seat, the display Baden pipe that one end is connected with the display end seat, show
Show that the Baden pipe other end is connected on display base, display base is arranged on chassis, by indicating value indication mechanism by transition piece
The driving of display Baden pipe movement and the pointer on movement, and dial；
The display Baden pipe is connected by display base, transition piece with the bellows；The bellows is with electrically setting
Standby connection, and the sealed air chamber is filled with compensation gas；Or the sealed air chamber connects with electrical equipment, and the ripple
Filled with compensation gas inside pipe.
In a preferred embodiment, one end of the bellows is sealed on support, the other end is fixedly mounted on bottom
On disk, the chassis is provided with blow vent, and described transition piece one end is fixed on the chassis, and is connected with the blow vent,
The other end is fixed on the display base, and is connected by the display base with display Baden pipe.
In a preferred embodiment, the gas density relay also includes temperature compensating element, the temperature-compensating
Element is compensation Baden pipe or compensation bellows, is connected with the display end seat, and connected with the sealed air chamber.
In a preferred embodiment, the gas density relay also includes temperature compensating element, the temperature-compensating
Element is bimetal leaf, is connected with the display end seat, is not connected with the bellows component.
In a preferred embodiment, be additionally provided with cover plate on the chassis, the cover plate cover the transition piece and/or
The blow vent, to seal the gas density relay.
In a preferred embodiment, the signaling gear also includes fixed mount, and the fixed mount is along the bellows group
Part telescopic direction extends, and the fixed mount is fixed on the chassis, and microswitch is located at the free end of the fixed mount.
In a preferred embodiment, the signaling gear also includes support, and the sealed end of the bellows is tightly connected
On the one side of the support.
In a preferred embodiment, the signaling gear also includes push rod, and the push rod is located at the outer of the bellows
Portion, extend along the telescopic direction of the bellows, the first end of the push rod is fixed on the bracket, and the second end, which is provided with, adjusts
Part fixed plate is saved, the free end of the regulating part fixed plate is provided with the regulating part for triggering the microswitch.
In a preferred embodiment, position-adjustable of the regulating part fixed plate on the push rod, passes through regulation
Position control of the regulating part fixed plate on the push rod triggers the pressure of the microswitch.
In a preferred embodiment, the signaling gear also includes spring, and one end of the spring is fixed on branch erection
Have on the side of push rod, the other end is adjustable on the outside of the push rod；Preferably, on the lateral surface of the push rod
Spring regulation fixture is arranged with, the spring is fixed on the spring regulation fixture, and adjusting fixture by spring adjusts
Save the elastic force of spring.
In a preferred embodiment, the high antivibration gas density relay also includes watchcase and housing, the housing
One end be fixedly connected on the chassis, the other end and the watchcase are tightly connected, and the watchcase, housing and chassis surround
The sealed air chamber.
In a preferred embodiment, the high antivibration gas density relay also includes temperature-sensitive bag, the temperature-sensitive bag inspection
The temperature of compensation gas is surveyed, and pressure and temperature data are processed into density data and shown on the display device.
In a preferred embodiment, the inside of the watchcase is additionally provided with least partly transparent watch crystal, the table glass
Glass is contacted with the housing along face, and the linear sealing of watchcase and housing has been changed into face sealing by the watch crystal, improves gas
The sealing of volume density relay.
High antivibration gas density relay provided by the invention, display base sealing are fixed on transition piece, and transition piece is close
Sealing is scheduled on chassis, and chassis is provided with blow vent, and joint is fixed on chassis directly or by connecting tube.Display base, mistake
Cross part, bellows and joint mutually to ventilate so that density monitor communicates with electrical equipment in gas circuit.One end of housing is close
Soldering and sealing is connected on chassis, and the other end is connected with each other with watch crystal, forms sealed air chamber, improves the sealing property of product.The table
Shell front is transparent watch crystal.So the load cell of indicating value indication mechanism (display portion) uses Baden pipe, different
Bellows is used in the load cell of display portion in the prior art, overcomes that bellows displacement is small, is difficult to gamut shows
Show problem, can easily realize that the gamut scope of gas density relay is shown, be particularly very easy to realize
Begin as -0.1MPa display, can display vacuum when vacuumizing, very easy popularization and application.And its signaling gear simultaneously
Load cell is bellows used by (signal control portion), to ensure the high resistance to shock of density monitor, and is used
Contact be microswitch, to ensure the reliable electric property of density monitor.
In addition, technical scheme can have up to 4 kinds of permutation and combination, as being filled with compensation gas, bottom in bellows
Disk is between bellows and joint or side；Air chamber compensation gas, chassis is between bellows and joint or side.It is aobvious
Show compensation：Bimetal leaf, or Baden pipe, or bellows；Display：Absolute pressure or relative pressure.
Temperature compensating element can be that display Baden pipe and/or display bellows, display Baden pipe connect with sealed air chamber
It is logical, it is internal filled with compensation gas, play a part of adjusting gas temperature in electrical equipment.Temperature compensating element can also be double
Sheet metal, do not connected with sealed air chamber, play a part of adjusting gas temperature in electrical equipment.
Wherein, compensation gas can be that sulfur hexafluoride gas, sulfur hexafluoride gas mixture, nitrogen, compressed air etc. are various
Gas.
Display base is fixed on chassis, or the display base is fixed on bottom plate.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, required in being described below to embodiment
The accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, right
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
Other accompanying drawings；
Fig. 1 is the partial cutaway schematic of the high antivibration gas density relay of the embodiment of the present invention one；
Fig. 2 is the structure chart of high antivibration gas density relay shown in Fig. 1；
Fig. 3 is the partial cutaway schematic of the high antivibration gas density relay of the embodiment of the present invention two.
Embodiment
Embodiment 1
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, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the partial cutaway schematic of the high antivibration gas density relay of the embodiment of the present invention one, as shown in Fig. 1,
The high antivibration gas density relay of the embodiment of the present invention one includes：The sealed air chamber that housing 10, watchcase 12 and chassis 8 surround,
Inside sealed air chamber, the signaling gear that gas circuit interconnects and indicating value indication mechanism, signaling gear pass through chassis
8 connect with being connected the joint 2 of sulfur hexafluoride electrical equipment, and joint 2 is located at the middle part on chassis 8.
Because the sealed air chamber of high antivibration gas density relay provided by the invention is hermetically sealed, thus the density after
Electrical equipment is absolute pressure type density monitor, and its indicating value is shown as absolute pressure, and signal is also absolute pressure, not by height above sea level shadow
Ring.
Signaling gear includes the bellows 9 of gas density in detection sulfur hexafluoride electrical equipment, as some micro- of contact
Dynamic switch 32, and support 38, push rod 27, push rod guide 30, fixed mount 31, some regulating parts 29, regulating part fixed plate
28.One end of bellows 9 is fixed on chassis 8, and is connected by chassis 8, the connector 5 on chassis 8 with joint 2,
And connected by joint 2 with sulfur hexafluoride electrical equipment.The other end sealing welding of bellows 9 is in a side of support 38
On, bellows 9, chassis 8 and support 38 surround the chamber connected with electrical equipment, for detecting the pressure of electrical equipment.Push rod
27 are arranged on the another side relative with bellows 9 of support 38, and push rod 27 passes through push rod guide 30, and is stretched along bellows 9
The direction movement of contracting.Push rod guide 30 is fixed on fixed mount 31, and fixed mount 31 is fixed on chassis 8, and fixed mount 31 plays branch
The effect of jackstay guide 30.
Microswitch 32 is fixed on fixed mount 31 or chassis 8, and the position of microswitch 32 can be arranged on bellows 9
Outside, further reduce the thickness of density monitor.One end of regulating part fixed plate 28 is fixed on push rod 27, and the other end hangs
Sky, plane and the central axis of push rod 27, some regulating parts 29 where at least part regulating part fixed plate 28 are fixed on tune
Save in part fixed plate 28, during gas pressure change in bellows 9, push rod 27 moves in left-right direction with bellows 9, push rod
27 drive regulating part fixed plate 28, and regulating part fixed plate 28 drives regulating part 29 to contact or disconnect with microswitch 32, with triggering
Or microswitch 32 is disconnected, and the pressure signal of electrical equipment is sent to outside by junction block, wherein, left and right direction and figure
Direction in 1 is consistent, and the sealing of wire outlet seat 40 is fixed on chassis 8 or housing.Regulating part fixed plate 28 can be a plane,
It can be the multistage face provided with kink, be mainly used in the triggering microswitch 32 under the drive of push rod 27 and act.The indicating value
Indication mechanism includes：Show Baden pipe 25, display end seat 20, movement 23, dial 19, pointer 22 and display base 16；It is described
One end of display Baden pipe 25 is welded on the display end seat 20, and the other end of the display Baden pipe 25 is welded on described show
Show on pedestal 16, the pointer 22 is installed on the movement 23.
Further, indication mechanism can also include temperature compensating element, and temperature compensating element can be display Baden
Pipe, or bimetal leaf.When temperature compensating element is shows Baden pipe, display Baden pipe connects with sealed air chamber, right
Indicating value indication mechanism plays temperature compensation function.When temperature compensating element is bimetal leaf, bimetal leaf and sealed air chamber are not
Connect, the compensation gas in bimetal leaf and sealed air chamber plays temperature compensation function to indicating value indication mechanism jointly.
In addition, high antivibration gas density relay provided by the invention also includes transition piece 11, transition piece 11 is hollow knot
Structure, the sealing of transition piece 11 are fixed on chassis 8, and one end connects with the blow vent 41 that chassis 8 is provided with, the other end and display base
Seat 16 is fixedly connected, and is connected by display base 16 with display Baden pipe 25.In addition, display base 16 can also be with transition
The integrated design of part 11, is fixed on chassis 8 jointly.I.e. Baden pipe 25, bellows 9 and electrical equipment are interconnected, and pass through ripple
Compensation gas collective effect in line pipe 9, Baden pipe 25 and sealed air chamber, the pressure of gas in electrical equipment is detected, it is this
Design and to detect that the pressure precision of gas is higher, and due to filled with compensation gas, can further reduce in sealed air chamber
Each component improves the stabilization of gas density relay due to being rocked caused by itself or extraneous other factors in sealed air chamber
Property and vibration resistance, and need not be filled with liquid oil medium in high antivibration gas density relay dial plate provided by the invention.
The high antivibration gas density relay of the embodiment of the present invention one also includes：Spring 39, spring 39 are nested on push rod 27, spring
39 one end leans against support 38, and the other end of spring 39 is leaned against on push rod guide 30.
Cover plate 7 corresponding with blow vent 41 is additionally provided with chassis 8, cover plate 7 is used to completely cut off gas density relay and the external world
Air, improve the sealing of product.Joint 2 is fixed on chassis 8 directly or by connecting tube 5.Display base 16, transition piece
11st, bellows 9 and joint 2 are mutually ventilated so that density monitor communicates with electrical equipment in gas circuit.
On chassis 8, the other end of housing 10 contacts one end sealing welding of housing 10 with the face of watch crystal 14, is formed close
Seal air chamber.The signaling gear and indicating value indication mechanism are all sealed in sealed air chamber, filled with compensation gas in sealed air chamber
Body, the compensation gas rises to signaling gear and indicating value indication mechanism respectively temperature compensation function.The watchcase front is transparent
Watch crystal.The outside of watch crystal 14 is additionally provided with metal shell 12, further improves the sealing of product, and fixed watch crystal
14 and housing 10.Existing gas density relay does not have watch crystal 14, the only seal casinghousing 10 of Pictest shell 12, but due to watchcase
12 is relatively thin, and the position difficulty of processing coefficient contacted with housing 10 is big, and flatness is inadequate, therefore, existing gas density relay
Easily occur gas leakage, but the present invention is by adding watch crystal 14, by contact surface by the edge transitions of watchcase 12 to housing 10
Inside, and the deep processing of housing 10 is relative is easier, and therefore, the sealing of gas density relay provided by the invention is more
It is good.
Signaling gear and indicating value indication mechanism are all sealed in a sealed air chamber by the present invention, are filled in sealed air chamber
There is compensation gas, the compensation gas plays temperature compensation function to signaling gear and indicating value indication mechanism respectively.
The high antivibration gas density relay of the embodiment of the present invention one can also include temperature-sensitive bag, and compensation gas passes through company
Trachea is connected with temperature-sensitive bag.The wire outlet seat 40 is fixed on chassis 8 or housing；Or high antivibration gas density relay
Anti-vibration part is additionally provided with, wire outlet seat 40 is fixed on anti-vibration part, and anti-vibration part is fixed on chassis 8 or housing.The anti-vibration part is ripple
Line pipe or the thin plate with anti-vibration function.And the connecting line of wire outlet seat 40 is connected with microswitch 32, and the connection of wire outlet seat 40
Line is connected on the junction block or cable outside housing.The watch crystal 12 is fixed on the housing 10, and table is nested with outside watch crystal
Lid.Gas tube on chassis 8 or housing.Corresponding compensation gas can be filled with to sealed air chamber by gas tube.It is described
Housing is separation type, and housing component is sealed using sealing ring 13, or welded seal.The housing separation type, housing 1 are stainless steel
10, housing 2 is that aluminium 12, housing 1 and housing 2 are sealed using sealing ring 13.Watch crystal is sealed with housing 2 using sealing ring.
The outer surface of housing 2 and watch crystal is covered with stainless steel table cover.The seal cavity outer wrap has heat-insulation layer.Located at described close
The housing of containment portion is sealed, the anti-vibration pad of antivibration is provided between the chassis 8 and the housing.
In order to further improve the resistance to shock of antivibration gas density relay, in addition to prevent from malfunctioning mechanism, it is described
Prevent malfunction mechanism be made up of locating part 42.Locating part 42 plays spacing, positioning action to the part of signaling gear, prevents
The part of stop signal mechanism swings in impact vibrated, rocked, and plays raising vibration resistance.
The high antivibration gas density relay of the embodiment of the present invention one also includes also including the maintaining body after signalizing activity
43 and resetting-mechanism 44.Described maintaining body 43 is correspondingly arranged with the signal contact for needing signal to keep, when the signalizing activity
Afterwards, no matter pressure or density reduce or increase, maintaining body can keep signalizing activity state, can only pass through resetting-mechanism 44
Can just signal be resetted.Described maintaining body 43 is made up of a flexible member.
The indicating value indication mechanism includes：Show Baden pipe 25, displays temperature compensating element, (bimetal leaf), display end
Seat 20, movement 23, dial 19, pointer 22 and display base 16；One end of the display Baden pipe 25 and the displays temperature
One end of compensating element, is both secured to the display end seat 20, and the other end of the display Baden pipe 25 is connected to the display
On pedestal 16, the other end of the displays temperature compensating element, passes sequentially through display linking arm and display connecting rod and the movement
The other end of 23 connections or the displays temperature compensating element, is directly connected with the movement 23, and the pointer 22 is installed on
On the movement 23 and before the dial 19, sulfur hexafluoride density indicating value display function is realized.Wherein, base is shown
Seat 16 is connected with sulfur hexafluoride electrical equipment, makes display Baden pipe 25 based on the sulfur hexafluoride in sulfur hexafluoride electrical equipment
The pressure of gas and mechanical deformation occurs, pass through the mechanical deformation drive movement work.The high antivibration gas of the embodiment of the present invention one
Volume density relay substitutes critical component of the bellows of the prior art as indicating value indication mechanism using display Baden pipe,
Can easily realize gamut scope (- 0.1~full scale) show, particularly be very easy to realization be initiated with-
0.1MPa display, can shows vacuum when vacuumizing, and is very easy to popularization and application.And its signaling gear (signal simultaneously
Control section) used by load cell be bellows 9 plus spring 39, to ensure the high resistance to shock of density monitor, and adopt
Contact is microswitch 32, to ensure the reliable electric property of density monitor.The displays temperature compensating element, can
With the compensating device formed using bimetal leaf or use the compensating device filled with compensation gas.Bellows 9 is mainly as gas
Body pressure transmission device, realize that spring 39 is used as pressure and mainly measures member by using the combination of bellows 9 and spring 39
Part, further improve measuring accuracy.If SF6 electrical equipments do not have gas leakage, high antivibration gas density relay does not just send report
Alert block signal；If SF6 electrical equipment gas leakage, when the SF6 gas density is in SF6 electrical equipments is near or below sealing
During the density of the compensation gas in cavity, high antivibration gas density relay is issued by warning block signal, it is ensured that power network is pacified
Entirely.
The signaling gear specifically includes：Seal cavity, bellows 9, several microswitch 32, signal regulation mechanisms
28 and outlet connecting seat 5.The bellows 9 is in the seal cavity；The signal regulation mechanism 28 is opened with the fine motion
Close 32 to be correspondingly arranged, the signal wire of the microswitch 32 is connected to the outlet connecting seat 40.The first of the bellows 9
End connects the signal regulation mechanism 28.
Wherein, the first end sealing of the bellows 9, the second end and the sulfur hexafluoride electrical equipment phase of the bellows 9
Connect and the annular seal space is filled with compensation gas.The signal regulation mechanism 28 is also provided with regulating part 29, regulating part
29 adjusting the alarm of density monitor, locking contact working value.It is close between the outlet connecting seat 40 and the seal cavity
Envelope is set.The operation principle of the high antivibration gas density relay of the embodiment of the present invention one is：It is close after regulating regulating part 29
Seal cavity is sealed, is typically realized by welding, then to seal cavity vacuumize process, then according to high antivibration gas density
The parameter of relay is filled with the compensation gas of relevant pressure in seal cavity.SF6 if (sulfur hexafluoride) electrical equipment does not have
Gas leakage, high antivibration gas density relay just do not send warning block signal；If SF6 electrical equipment gas leakage, when SF6 electricity
When SF6 gas densities in gas equipment are near or below the density of the compensation gas in seal cavity 2, high antivibration gas density
Relay is issued by warning block signal, it is ensured that power grid security.
The outlet connecting seat 40 can install transition piece by junction block and be fixedly installed in the seal cavity, or
Person, the outlet connecting seat can also be directly fixedly installed in the seal cavity.The signal wire of the microswitch 32 is also
It can be connected with signal teletransmission circuit, to realize the on-line monitoring of sulfur hexafluoride density.Seal cavity can be by metal material system
Into (such as being welded), outlet connecting seat is made up of metal, glass and some lead-out wires.
In addition it is also possible to be set to the first end of the bellows 9 and the second end all seal, the seal cavity and hexafluoro
Change sulphur electrical equipment to be connected and in the bellows 9 filled with compensation gas.The microswitch 32 and the Signal Regulation machine
Structure 28 can be located in the seal cavity, or, the microswitch 32 and the signal regulation mechanism can also be located at institute
State outside seal cavity.
Embodiment two
Fig. 2 is the partial cutaway schematic of the high antivibration gas density relay of the embodiment of the present invention two, as shown in Fig. 2,
Compared with embodiment one, the main distinction is the high antivibration gas density relay of the embodiment of the present invention two：Joint 2 is fixed on bottom
At the eccentric position of disk 8, the sealing of display base 16 is fixed on transition piece 11, and the sealing of transition piece 11 is fixed on chassis 8, bottom
Disk 8 is provided with blow vent 41, and joint 2 is sealed in corresponding to blow vent 41 on chassis 8.Display base 16, transition piece 11, ripple
Pipe 9 and joint 2 are mutually ventilated so that density monitor communicates with electrical equipment in gas circuit.
The high antivibration gas density relay of the present invention, filled with compensation gas in sealed air chamber, or, filled in bellows 9
There is compensation gas.Or displays temperature compensating element, includes：Bimetal leaf form compensating device or filled with compensation gas
Compensating device.
Compensating device filled with compensation gas is the display Baden pipe filled with compensation gas, or display bellows.
Displays temperature compensating element, is that bimetal leaf encrypts the gas sealed, or sealing gas.
Housing is hermetically sealed so that density monitor is absolute pressure type density monitor, and its indicating value is shown as absolute pressure, letter
Number and absolute pressure, do not influenceed by height above sea level.
The position of the microswitch 32 can be arranged on the outside of bellows 9, i.e., microswitch 32 can be arranged on down
Face, sink, make the thickness of density monitor thinning.
The technical scheme of the density monitor can be interior filled with benefit with up to more than 4 kinds of permutation and combination, such as bellows 9
Gas is repaid, its chassis 8 is located at the left side or right side of bellows 9；Or it is located in sealed air chamber filled with compensation gas, its chassis 8
Left side or right side.And showing compensation technique scheme can have：Bimetal leaf, or Baden pipe, or bellows 9；And display portion
Measuring principle can be：Absolute pressure or relative pressure.
Displays temperature compensating element, can be sealed with compensation gas display Baden pipe or display bellows, compensating plate
It can also be bimetal leaf.
Wherein, compensation gas can be that sulfur hexafluoride gas, sulfur hexafluoride gas mixture, nitrogen, compressed air etc. are various
Gas.
Display base is fixed on chassis 8, or the display base is fixed on bottom plate.Fixed mount 31 can also be fixed
On housing, or in housing.Push rod guide 30 can also be fixed on housing, or in housing.Microswitch 32 can also be consolidated
It is scheduled on housing, or in housing.
High antivibration gas density relay includes air inlet, and air inlet is arranged on chassis 8 or housing, and the joint passes through
Tracheae is connected with air inlet or is directly connected with air inlet.Or high antivibration gas density relay, in addition to air inlet,
Air inlet is arranged on chassis 8, and the joint is connected with air inlet, filled with compensation gas in sealed air chamber.Display base passes through
Connecting tube is directly anchored on chassis 8, and the display base is connected with joint in gas circuit.
The housing of high antivibration gas density relay can be with separation type, and housing 1 is stainless steel, the aluminium of housing 2, the He of housing 1
Housing 2 is sealed using sealing ring.Watch crystal is sealed with housing 2 using sealing ring.In addition in the outer surface of housing 2 and watch crystal
Stainless steel watch case is covered with, it is more attractive in appearance.
High antivibration gas density relay provided by the invention, maximum feature are innovated in structure：Display base is close
Sealing is scheduled on transition piece, and transition piece sealing is fixed on chassis 8, and chassis 8 is provided with blow vent, and joint is directly or by even
Adapter is fixed on chassis 8.Display base, transition piece, bellows 9 and joint are mutually ventilated so that density monitor with electrically
Equipment communicates in gas circuit.One end sealing welding of housing is on chassis 8, and the other end and the watch crystal of housing are connected with each other, shape
Into sealed air chamber.The signaling gear and indicating value indication mechanism are all sealed in sealed air chamber, filled with compensation in sealed air chamber
Gas, the compensation gas rises to signaling gear and indicating value indication mechanism respectively temperature compensation function.The watchcase front is
Bright watch crystal.So the load cell of indicating value indication mechanism (display portion) uses Baden pipe, different from prior art
The load cell of middle display portion uses bellows 9, overcomes that the displacement of bellows 9 is small, is difficult to gamut display problem,
Can easily realize that the gamut scope of gas density relay is shown, particularly be very easy to realization be initiated with-
0.1MPa display, can shows vacuum when vacuumizing, and is very easy to popularization and application.And its signaling gear (signal simultaneously
Control section) used by load cell be bellows 9, to ensure the high resistance to shock of density monitor, and the contact used
For microswitch 32, to ensure the reliable electric property of density monitor.The high antivibration gas density relay of the present invention,
Signaling gear uses bellows 9, ensures that anti-seismic performance is good.Other indication mechanism can also include bimetal leaf, bimetal leaf with
Compensation gas in sealed air chamber plays temperature compensation function to indicating value indication mechanism jointly, further improves and ensure that essence
Degree.
In addition, the watchcase and housing are integrated.
In a word, high antivibration gas density relay of the invention have oil-free, resistance to shock again it is good, precision is high, electrical resistance
Can good, long working life, gamut indication range the advantages of, in addition it is important also have it is simple in construction, good manufacturability,
The advantages of convenient for production.Simultaneously because the microswitch 32 can be located in the seal cavity, and have six in seal cavity
Sulfur fluoride gas, because sulfur hexafluoride gas has very strong insulation and arc extinguishing ability, so the technology of the present invention density monitor
Electric terminal has extraordinary electric property, and using reliable, contacts are reliable, long lifespan, and this is also the very big of the present invention
Innovative point and feature.Indicating value indication mechanism is all sealed in sealed air chamber simultaneously so that density monitor is absolute pressure type density
Relay, its indicating value are shown as absolute pressure, and signal is also absolute pressure, is not influenceed by height above sea level.Also there is signal simultaneously
Maintaining body and resetting-mechanism after action, it is possible to achieve electrical equipment arcing overpressure alarm keeps a kind of high antivibration of function
Sulfur hexafluoride gas density relay., being capable of overpressure alarm during its hypertonia when electrical equipment arcing.And when electric
After equipment arcing terminates, when its pressure is normal, its alarm signal is always maintained at, and operations staff can be allowed to find electrical equipment combustion
Arc phenomenon, the electrical equipment of timely processing arcing phenomenon, ensure electric power safety operation.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；
Although the present invention is described in detail with reference to foregoing embodiments, it will be understood by those within the art that：Its
The technical scheme described in foregoing embodiments can still be modified, it is either special to which part or whole technologies
Sign carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention
The scope of technical scheme.
Claims (10)
1. a kind of high antivibration gas density relay, it is characterised in that including sealed air chamber, and in the sealed air chamber
The signaling gear and indicating value indication mechanism in portion；
The signaling gear includes load cell bellows, and the microswitch being opened or closed by bellows control,
The microswitch electrically connects with junction block, the equipment for transmitting a signal to outside；
The indicating value indication mechanism includes：Display end seat, the display Baden pipe that one end is connected with the display end seat, show Baden
The pipe other end is connected on display base, and display base is arranged on chassis, by the display of indicating value indication mechanism by transition piece
The movement and the pointer on movement of Baden pipe driving, and dial；
The display Baden pipe is connected by display base, transition piece with the bellows；The bellows connects with electrical equipment
It is logical, and the sealed air chamber is filled with compensation gas；Or the sealed air chamber connects with electrical equipment, and the bellows interior
Filled with compensation gas.
2. high antivibration gas density relay according to claim 1, it is characterised in that one end sealing of the bellows
On support, the other end is fixedly mounted on chassis, and the chassis is provided with blow vent, and described transition piece one end is fixed on described
On chassis, and connected with the blow vent, the other end is fixed on the display base, and passes through the display base and display
Baden pipe connects.
3. high antivibration gas density relay according to claim 1, it is characterised in that the gas density relay is also
Including temperature compensating element, the temperature compensating element is compensation Baden pipe or compensation bellows, is connected with the display end seat；
Or the gas density relay also includes temperature compensating element, the temperature compensating element is bimetal leaf, and described
Display end seat connects.
4. high antivibration gas density relay according to claim 2, it is characterised in that the chassis is provided with cover plate,
The cover plate covers the transition piece and/or the blow vent, to seal the gas density relay.
5. high antivibration gas density relay according to claim 1 or 2, it is characterised in that the signaling gear also wraps
Push rod is included, the push rod is located at the outside of the bellows, extends along the telescopic direction of the bellows, the first of the push rod
End is fixed on the bracket, and the second end is provided with regulating part fixed plate, and the free end of the regulating part fixed plate is provided with triggering institute
State the regulating part of microswitch.
6. high antivibration gas density relay according to claim 5, it is characterised in that also include：Also include spring, institute
The one end for stating spring is fixed on side of the support provided with push rod, and the other end is adjustable on the outside of the push rod.
7. high antivibration gas density relay according to claim 1, it is characterised in that also including temperature-sensitive bag, the sense
Thermometer bulb detects the temperature of compensation gas, and pressure and temperature data are processed into density data and shown on the display device.
8. high antivibration gas density relay according to claim 7, it is characterised in that also including watchcase and housing, institute
The one end for stating housing is fixedly connected on the chassis, and the other end is tightly connected with the watchcase, the watchcase, housing and chassis
Surround the sealed air chamber.
9. high antivibration gas density relay according to claim 1, it is characterised in that also including wire outlet seat, it is described go out
Line seat is fixed on chassis or housing；Or also including anti-vibration part, anti-vibration part is fixed on chassis or housing, and wire outlet seat, which is fixed on, to be kept away
Shake on part.
10. high antivibration gas density relay according to claim 1, it is characterised in that also include keeping alert status
Maintaining body and/or state of resuming work resetting-mechanism.
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| CN201711224008.6A CN107863271B (en) | 2017-11-29 | 2017-11-29 | High-vibration-resistance gas density relay |
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| CN201711224008.6A CN107863271B (en) | 2017-11-29 | 2017-11-29 | High-vibration-resistance gas density relay |
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| CN107863271A true CN107863271A (en) | 2018-03-30 |
| CN107863271B CN107863271B (en) | 2021-04-16 |
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| CN201711224008.6A Active CN107863271B (en) | 2017-11-29 | 2017-11-29 | High-vibration-resistance gas density relay |
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| CN108550499A (en) * | 2018-04-27 | 2018-09-18 | 朗松珂利(上海)仪器仪表有限公司 | Sulfur hexafluoride gas density relay and its assembly technology |
| CN110459430A (en) * | 2019-09-03 | 2019-11-15 | 上海卓电电气有限公司 | A kind of gas density relay |
| CN111192791A (en) * | 2020-03-11 | 2020-05-22 | 上海乐研电气有限公司 | High-vibration-resistance gas density relay |
| CN111192790A (en) * | 2020-03-11 | 2020-05-22 | 上海乐研电气有限公司 | Wide-range high-vibration-resistance gas density relay |
| CN111243881A (en) * | 2020-03-11 | 2020-06-05 | 上海乐研电气有限公司 | Thin high vibration resistance gas density relay |
| RU2784412C1 (en) * | 2020-03-11 | 2022-11-24 | Шанхай Ройе Электрик Ко., Лтд. | Gas density monitor with high anti-vibration characteristics |
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| CN108550499A (en) * | 2018-04-27 | 2018-09-18 | 朗松珂利(上海)仪器仪表有限公司 | Sulfur hexafluoride gas density relay and its assembly technology |
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| CN111192790A (en) * | 2020-03-11 | 2020-05-22 | 上海乐研电气有限公司 | Wide-range high-vibration-resistance gas density relay |
| CN111243881A (en) * | 2020-03-11 | 2020-06-05 | 上海乐研电气有限公司 | Thin high vibration resistance gas density relay |
| EP3965133A4 (en) * | 2020-03-11 | 2022-08-10 | Shanghai Roye Electric Co., Ltd. | High anti-vibration gas density relay |
| RU2784412C1 (en) * | 2020-03-11 | 2022-11-24 | Шанхай Ройе Электрик Ко., Лтд. | Gas density monitor with high anti-vibration characteristics |
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| CN107863271B (en) | 2021-04-16 |
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