CN207752941U - A kind of wide range gas density relay of miniaturization - Google Patents
A kind of wide range gas density relay of miniaturization Download PDFInfo
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- CN207752941U CN207752941U CN201721626246.5U CN201721626246U CN207752941U CN 207752941 U CN207752941 U CN 207752941U CN 201721626246 U CN201721626246 U CN 201721626246U CN 207752941 U CN207752941 U CN 207752941U
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Abstract
The utility model discloses the wide range gas density relays of miniaturization, including：The signaling gear and indicating value indication mechanism to link together；The bellows of gas density and the microswitch as contact in detection sulfur hexafluoride electrical equipment are equipped in signaling gear；Indicating value indication mechanism includes：Show Baden pipe, displays temperature compensating element, display end seat, movement, dial, pointer and display base；One end of one end and displays temperature compensating element, for showing Baden pipe is both secured to display end seat, the other end of display Baden pipe is connected on display base, the other end of displays temperature compensating element, passes sequentially through display linking arm and display connecting rod is connect with movement or the other end of displays temperature compensating element, is directly connect with movement, and pointer is installed on movement and before dial.Terminal box is fixed on display chassis or shell, and the terminal box is equipped with junction block, cable outlet mouth, and vacuum degree can be shown when vacuumizing, and is very easy to promote and apply.
Description
Technical field
The utility model is related to technical field of electric power, and in particular to a kind of structure is most simple, appearance and size smallest, raw
The wide range gas density relay of the good miniaturization of production. art.
Background technology
Currently, close for the sulfur hexafluoride gas for monitoring the sulfur hexafluoride gas density in high pressure sulfur hexafluoride electrical equipment
The load cell that generally uses of signaling gear (signal control portion) of degree relay is Baden pipe, the contact used to be magnetic auxiliary
Contact, contact, which exists, contacts bad, the disadvantage of resistance to shock difference, it is difficult to ensure the reliable and secure operation of power grid so urgent
It needs to innovate.And many high voltage electric equipments may be implemented it is necessary to have holding mechanism and resetting-mechanism after signalizing activity
A kind of high antivibration sulfur hexafluoride gas density relay of electrical equipment arcing overpressure alarm function, it is also desirable to innovate.Present skill
Art progress, it is desirable that electrical equipment minimizes, it is necessary to which gas density relay also wants small-sized household, and it is electrical to be just suitable for miniaturization
Equipment uses, and thus needs to innovate, and develops that a kind of structure is most simple, and appearance and size smallest, production technology is good, together
When can easily realize gas density relay gamut scope (- 0.1~0.9MPa) display, especially hold very much
It easily realizes the display for being initiated with -0.1MPa, vacuum degree can be shown when vacuumizing, could be very easy to promote and apply in this way,
So there is an urgent need to innovate.
Utility model content
The utility model provides a kind of wide range gas density relay of miniaturization, the hexafluoro for solving the prior art
The appearance and size of changing sulphur gas density relay is big, range indication range is small, it is difficult to realize that small-sized household and gamut scope are aobvious
The problem of showing.
A kind of wide range gas density relay of miniaturization, including：Terminal box, cable outlet mouth, is connected to junction block
Signaling gear together and indicating value indication mechanism；
The bellows of gas density is equipped in detection sulfur hexafluoride electrical equipment in the signaling gear and as contact
Microswitch；
The indicating value indication mechanism includes：Show Baden pipe, displays temperature compensating element, display end seat, movement, scale
Disk, pointer and display base；One end of the display Baden pipe and one end of the displays temperature compensating element, are both secured to institute
Display end seat is stated, the other end of the display Baden pipe is connected on the display base, the displays temperature compensating element,
The other end pass sequentially through display linking arm and show connecting rod connect with the movement or the displays temperature compensating element, it is another
One end is directly connect with the movement, and the pointer is installed on the movement and before the dial；
If the signaling gear include chassis, bellows, holder, spring, mandril, spring adjust fixing piece, fixed frame,
Dry microswitch, several regulating parts, regulating part fixed plate, shell, display chassis, wire outlet seat, one end sealing welding of bellows
On chassis, for the other end sealing welding of bellows on holder, fixed frame is fixed on chassis, and mandril is fixed on holder, bullet
Spring is nested on mandril, and one end of spring leans against holder, and the other end of spring leans against spring and adjusts on fixing piece, and spring adjusts solid
Determine part to be fixed on fixed frame, the spring adjusts fixing piece and carries out guiding fixation to mandril, and microswitch is fixed on fixed frame
On upper or chassis, regulating part fixed plate is fixed on mandril, and several regulating parts are fixed in regulating part fixed plate, one end of shell
Sealing welding is on chassis, and the other end sealing welding of shell forms sealed air chamber on display chassis, and display chassis is equipped with
Shrinkage pool and outlet hole, wire outlet seat sealing are fixed on the shrinkage pool on display chassis, and the connecting line of wire outlet seat is connect with microswitch, and
The connecting line of wire outlet seat is by showing that the outlet hole on chassis is drawn, and the display base is fixed on display chassis, and terminal box is solid
It is scheduled on display chassis or shell, terminal box is arranged in the outside of the indicating value indication mechanism, and the terminal box is equipped with wiring
Seat, cable outlet mouth.
In gas circuit, the sealed air chamber is connected by connector with sulfur hexafluoride electrical equipment, and display base passes through aobvious
Show that chassis is connected with sealed air chamber, and filled with compensation gas in the bellows.
In gas circuit, the bellows is connected by chassis and connector with sulfur hexafluoride electrical equipment, and display base is logical
Display chassis, tracheae, chassis and connector is crossed with sulfur hexafluoride electrical equipment to be connected, and filled with compensation gas in the sealed air chamber
Body.
It is additionally provided with guard member above the regulating part fixed plate, prevents electric wire from interfering.
The wire outlet seat is provided with anti-vibration part, and wire outlet seat is fixed on anti-vibration part, and anti-vibration part is fixed on display chassis or shell
On body or chassis.
Further include temperature sensing package, the compensation gas is connected by connecting tracheae with temperature sensing package.
The spring adjusts fixing piece and carries out guiding fixation to mandril.
The indicating value indication mechanism is sealed in a shell, which is fixed on display chassis, and indicating value is made to be shown as
Absolute pressure is not influenced by height above sea level, and the outer casing frontispiece is transparent.
Further include：Gas tube on chassis or display chassis or shell, can fill corresponding benefit with by gas tube
Repay gas.
The displays temperature compensating element, includes：The compensation device or the compensation filled with compensation gas that bimetal leaf is constituted
Device.
It is enclosed with insulating layer outside the seal cavity.
Further include vibration proof mechanism, the vibration proof mechanism can play limit, positioning action to the component of signaling gear, prevent
The component of stop signal mechanism swings in impact vibrated, rocks, and plays raising vibration resistance.
Further include preventing malfunction mechanism, described prevents malfunction mechanism to be made of locating part.
Further include：Watchcase outside the seal cavity, keeping away equipped with antivibration between the chassis and the watchcase
Shake pad.
The wide range gas density relay of miniaturization provided by the utility model, indicating value indication mechanism (display portion)
Load cell uses Baden pipe, and the load cell for being different from display portion in the prior art uses bellows, overcomes bellows
Displacement is small, is difficult to realize gamut display problem, can easily realize gas density relay gamut scope (-
0.1~0.9MPa) display, it is especially very easy to realize the display for being initiated with -0.1MPa, vacuum can be shown when vacuumizing
Degree is very easy to promote and apply.And pass through innovation：Show that chassis is equipped with shrinkage pool and outlet hole, wire outlet seat sealing is fixed on aobvious
Show on the shrinkage pool on chassis, the connecting line of wire outlet seat is connect with microswitch, and the connecting line of wire outlet seat is by showing going out for chassis
String holes is drawn.The display base is fixed on display chassis.Terminal box is fixed on display chassis or shell, terminal box setting
In the outside of the indicating value indication mechanism, the terminal box is equipped with junction block, cable outlet mouth.Innovation in this way is set
Meter so that structure is most simple, and appearance and size smallest, production technology is good, is very easy to promote and apply the electricity in miniaturization
In gas equipment.And simultaneously load cell used by its signaling gear (signal control portion) be bellows, come ensure density after
The high resistance to shock of electric appliance, and the contact used is microswitch, to ensure the reliable electric property of density monitor.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is some implementations of the utility model
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings；
Fig. 1 is the part section signal of the wide range gas density relay of the miniaturization of the utility model embodiment one
Figure；
Fig. 2 is the part section signal of the wide range gas density relay of the miniaturization of the utility model embodiment two
Figure.
Specific implementation mode：
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to
The range of the utility model protection.
A kind of wide range gas density relay of miniaturization, including：Terminal box, cable outlet mouth, is connected to junction block
Signaling gear together and indicating value indication mechanism；
The bellows of gas density is equipped in detection sulfur hexafluoride electrical equipment in the signaling gear and as contact
Microswitch；
The indicating value indication mechanism includes：It shows Baden pipe 4, displays temperature compensating element, 5, display end seat 6, movement 3, carve
Scale 35, pointer 2 and display base 34；One end of the display Baden pipe 4 and one end of the displays temperature compensating element, 5 are equal
It is fixed on the display end seat 6, the other end of the display Baden pipe 4 is connected on the display base 34, the display temperature
The other end of degree compensating element, 5 passes sequentially through display linking arm and display connecting rod is connect with the movement 3 or display temperature
The other end of degree compensating element, 5 is directly connect with the movement 3, and the pointer 2 is installed on the movement 3 and is set to the quarter
Before scale 35, sulfur hexafluoride density indicating value display function is realized.
The signaling gear includes chassis 17, bellows 25, holder 23, spring 24, mandril 21, spring adjusting fixing piece
22, fixed frame 16, several microswitches 36, several regulating parts 20, regulating part fixed plate 37, shell 13, display chassis 7, outlet
Seat 10, for one end sealing welding of bellows 25 on chassis 17, the other end sealing welding of bellows 25 is fixed on holder 23
Frame 16 is fixed on chassis 17, and mandril 21 is fixed on holder 23, and spring 24 is nested on mandril 21, and one end of spring 24 leans against branch
Frame 23, the other end of spring 24 lean against spring and adjust on fixing piece 22, and spring adjusts fixing piece 22 and is fixed on fixed frame 16.Institute
State spring adjusting fixing piece 22 has good guiding to mandril 21.Microswitch 36 is fixed on by fixing piece 14 on fixed frame 16
Or on chassis, regulating part fixed plate 37 is fixed on mandril 21, and several regulating parts 20 are fixed in regulating part fixed plate 37, shell
For 13 one end sealing welding on chassis 17, the other end sealing welding of shell forms sealed air chamber on display chassis 7.It is aobvious
Show that chassis 7 is equipped with shrinkage pool and outlet hole, wire outlet seat 10 is arranged on anti-vibration part 11, i.e., wire outlet seat 10 is fixed on anti-vibration part 11
On, anti-vibration part 11 is fixed on display chassis 7.Wire outlet seat 10 is sealed by anti-vibration part 11 in this way is fixed on the recessed of display chassis 7
The connecting line of Kong Shang, wire outlet seat 10 are connect with microswitch, and the connecting line of wire outlet seat is by showing that the outlet hole on chassis is drawn.
The display base 34 is fixed on display chassis.Microswitch 36 is fixed on by fixing piece 14 in shell, can specifically be consolidated
Determine on frame or on chassis.
Terminal box 27 is fixed on display chassis 7 or shell, and terminal box 27 is arranged in the outside of the indicating value indication mechanism,
The terminal box is equipped with junction block 28, cable outlet mouth 32.
In gas circuit, the bellows 25 is connected by chassis 17 and connector 18 with sulfur hexafluoride electrical equipment, display
Pedestal 34 is by showing that chassis 7, tracheae, chassis 17 and connector 18 are connected with sulfur hexafluoride electrical equipment.And the blanket gas
Interior is filled with compensation gas.It is additionally provided with guard member 12 above the regulating part fixed plate, prevents electric wire from interfering.
This technology density monitor product further includes temperature sensing package, and the compensation gas is connected by connecting tracheae with temperature sensing package
It connects.The indicating value indication mechanism is sealed in a shell 1, which is fixed on display chassis 7, and indicating value is made to be shown as exhausted
It to pressure, is not influenced by height above sea level, the outer casing frontispiece is transparent.Inflation on chassis or display chassis or shell
Pipe.Corresponding compensation gas can be filled with by gas tube.The displays temperature compensating element, 5 is the compensation that bimetal leaf is constituted
Device or compensation device filled with compensation gas.It is enclosed with insulating layer outside the seal cavity.The density monitor also wraps
Including prevents malfunction mechanism.Described prevents malfunction mechanism to be made of locating part.The density monitor is set to the seal chamber
Watchcase outside body is equipped with the anti-vibration pad of antivibration between the chassis and the watchcase.
The wide range gas density relay of the miniaturization of the utility model embodiment one is substituted existing using display Baden pipe
There is critical component of the bellows in technology as indicating value indication mechanism, can easily realize gamut scope (- 0.1
~0.9MPa) display, it is especially very easy to realize the display for being initiated with -0.1MPa, vacuum degree can be shown when vacuumizing,
It is very easy to promote and apply.And load cell used by its signaling gear (signal control portion) is bellows simultaneously, to protect
Demonstrate,prove the high resistance to shock of density monitor, and the contact used is microswitch, come ensure density monitor it is reliable electrically
Performance.The displays temperature compensating element, 5 may be used the compensation device of bimetal leaf composition or using filled with compensation gas
Compensation device.
Wherein, the first end sealing of the bellows, the second end of the bellows are connected with sulfur hexafluoride electrical equipment
The logical and described seal chamber is filled with compensation gas.In addition it is also possible to which the first end and second end for being set as the bellows is all close
Envelope, the seal cavity are connected with sulfur hexafluoride electrical equipment and in the bellows filled with compensation gas.The fine motion is opened
It closes and the signal regulation mechanism can be set in the seal cavity, alternatively, the microswitch and the Signal Regulation machine
Structure can also be set to outside the seal cavity.The signal regulation mechanism is also provided with regulating part, and regulating part is adjusting
The alarm of density monitor, locking contact working value.Sealed set between the outlet connecting seat and the seal cavity.It is described go out
Line connecting seat can install transition piece by junction block and be fixedly installed in the seal cavity, alternatively, the outlet connecting seat
It can also directly be fixedly installed in the seal cavity.The signal wire of the microswitch can also connect with signal teletransmission circuit
It connects, to realize the on-line monitoring of sulfur hexafluoride density.Seal cavity can be made of metal material (such as being welded), outlet
Connecting seat is made of metal, glass and several lead-out wires.
The operation principle of the wide range gas density relay of the miniaturization of the utility model embodiment one is：It regulates
After saving part 20, seal cavity is sealed, is generally realized by welding, then to seal cavity vacuumize process, then according to small-sized
The parameter of the wide range gas density relay of change is filled with the compensation gas of relevant pressure in seal cavity.If SF6 (hexafluoros
Change sulphur) electrical equipment do not have gas leakage, the wide range gas density relay of miniaturization just not to send out warning block signal；If
SF6 electrical equipment gas leakage, when the SF6 gas density is in SF6 electrical equipments is near or below the compensation gas in seal cavity 2
Density when, the wide range gas density relay of miniaturization is issued by warning block signal, it is ensured that power grid security.This practicality is new
The temperature-compensating of the signaling gear part of type is realized using the technology of gas compensation.
Fig. 2 is the part section signal of the wide range gas density relay of the miniaturization of the utility model embodiment two
Figure, as shown in Fig. 2, in conjunction with reference implementation example one, the main distinction is the wide range of the miniaturization of the utility model embodiment two
The partial cutaway schematic of gas density relay, as shown in Fig. 2, the wide range gas of the miniaturization of the utility model embodiment two
Volume density relay further includes vibration proof mechanism 38.The vibration proof mechanism 38 can play the component of signaling gear limit, determine
Position effect, prevents the component of signaling gear from swinging, rocking in impact vibrated, plays raising vibration resistance.It can also wrap
Include the insulating layer 39 that 13 outside of shell is wrapped in outside seal cavity.Insulating layer 39 plays insulation effect, can be effectively prevented from environment
False alarm caused by temperature suddenly change.
The position of the microswitch can be arranged on the outside of bellows, i.e., microswitch can be disposed below, and be avaled
It goes, keeps the thickness of density monitor thinning.
The technical solution of the density monitor can be interior filled with compensation with up to 4 kinds or more of permutation and combination, such as bellows
Gas, chassis is in up or down；Or filled with compensation gas in gas chamber, chassis is in up or down.And show compensation technique scheme
Can have：Bimetal leaf or Baden pipe or bellows；And the measuring principle of display portion can be：Absolute pressure or opposite pressure
Power.
Spring can not also be used in the technical solution of the density monitor, and all detects and controls gas with bellows
Volume density.
The wide range gas density relay of the miniaturization, outlet connecting seat are installed transition piece by junction block and are fixedly mounted
In in the seal cavity, alternatively, the outlet connecting seat is directly fixedly installed in the seal cavity.
The wide range gas density relay of the miniaturization of the utility model, signaling gear use bellows, ensure antidetonation
Performance is good；Indicating value indication mechanism uses Baden pipe, and due to using Baden pipe realization, overcoming, bellows displacement is small, it is complete to be difficult to realize
Range display problem can easily realize the density monitor (- 0.1~0.9MPa) of gamut scope, especially be non-
The normal display easy to implement for being initiated with -0.1MPa, can show vacuum degree when vacuumizing, be very easy to promote and apply.In addition
Displays temperature compensating element, is additionally used to realize the temperature compensation function of indicating value display portion, improves and ensure that precision.And
Pass through innovation：Show that chassis is equipped with shrinkage pool and outlet hole, wire outlet seat sealing is fixed on the shrinkage pool on display chassis, wire outlet seat
Connecting line is connect with microswitch, and the connecting line of wire outlet seat is by showing that the outlet hole on chassis is drawn.The display base is solid
It is scheduled on display chassis.Terminal box is fixed on display chassis or shell, and terminal box is arranged in the outer of the indicating value indication mechanism
Portion, the terminal box are equipped with junction block, cable outlet mouth.Innovative design in this way so that structure is most simple, shape ruler
Very little smallest, production technology is good, is very easy to promote and apply on the electrical equipment of miniaturization.In short, the utility model
The wide range gas density relay of miniaturization have that shape is small, good manufacturability, oil-free, resistance to shock are again good, precision is high, electric
The advantages of gas performance is good, long working life, gamut indication range.Simultaneously because the microswitch can be set to the sealing
In cavity, and there is sulfur hexafluoride gas in seal cavity, because sulfur hexafluoride gas has very strong insulation and arc extinguishing ability, so
The electric terminal of the utility model Technology Density relay has extraordinary electric property, and using reliable, contact contact is reliable,
Long lifespan, this is also the very big innovative point and feature of the utility model.
Technical solutions of the utility model can up to permutation and combination, bellow-type expansion gas, chassis is in up or down；Gas chamber is mended
Gas is repaid, chassis is in up or down.Display compensation：Bimetal leaf or Baden pipe or bellows；Display：Absolute pressure or opposite pressure
Power.Displays temperature compensating element, can be the gas of sealing, and compensating plate can not be bimetal leaf.Gas can be sulfur hexafluoride
The various gases such as gas, sulfur hexafluoride gas mixture, nitrogen, compressed air.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of wide range gas density relay of miniaturization, including：Terminal box, cable outlet mouth, is connected to one at junction block
The signaling gear and indicating value indication mechanism risen；
The bellows of gas density and the fine motion as contact in detection sulfur hexafluoride electrical equipment are equipped in the signaling gear
Switch；
The indicating value indication mechanism includes：Display Baden pipe, display end seat, movement, dial, refers to displays temperature compensating element,
Needle and display base；One end of the display Baden pipe and one end of the displays temperature compensating element, are both secured to the display
The other end of end seat, the display Baden pipe is connected on the display base, the other end of the displays temperature compensating element,
It passes sequentially through display linking arm and display connecting rod is connect with the movement or the other end of the displays temperature compensating element, is straight
It connects and is connect with the movement, the pointer is installed on the movement and before the dial；
The signaling gear includes chassis, bellows, holder, spring, mandril, spring adjusting fixing piece, fixed frame, Ruo Ganwei
Dynamic switch, several regulating parts, regulating part fixed plate, shell, display chassis, wire outlet seat, one end sealing welding of bellows is the bottom of at
On disk, for the other end sealing welding of bellows on holder, fixed frame is fixed on chassis, and mandril is fixed on holder, and spring is embedding
It is sleeved on mandril, one end of spring leans against holder, and the other end of spring leans against spring and adjusts on fixing piece, and spring adjusts fixing piece
It is fixed on fixed frame, microswitch is fixed on fixed frame or on chassis, and regulating part fixed plate is fixed on mandril, several tune
Section part is fixed in regulating part fixed plate, and one end sealing welding of shell is on chassis, and the other end sealing welding of shell is aobvious
Show on chassis, form sealed air chamber, which is characterized in that display chassis is equipped with shrinkage pool and outlet hole, and wire outlet seat sealing is fixed on
On the shrinkage pool for showing chassis, the connecting line of wire outlet seat is connect with microswitch, and the connecting line of wire outlet seat is by showing chassis
Outlet hole is drawn, and the display base is fixed on display chassis, and terminal box is fixed on display chassis or shell, and terminal box is set
It sets in the outside of the indicating value indication mechanism, the terminal box is equipped with junction block, cable outlet mouth.
2. the wide range gas density relay of miniaturization according to claim 1, which is characterized in that in gas circuit, institute
It states sealed air chamber by connector to be connected with sulfur hexafluoride electrical equipment, display base is by showing that chassis is connected with sealed air chamber
It is logical, and filled with compensation gas in the bellows.
3. the wide range gas density relay of miniaturization according to claim 2, which is characterized in that in gas circuit, institute
It states bellows by chassis and connector to be connected with sulfur hexafluoride electrical equipment, display base is by showing chassis, tracheae, chassis
It is connected with connector with sulfur hexafluoride electrical equipment, and filled with compensation gas, the regulating part fixed plate in the sealed air chamber
Top is additionally provided with guard member, prevents electric wire from interfering.
4. the wide range gas density relay of miniaturization according to claim 1, which is characterized in that the wire outlet seat is set
It is equipped with anti-vibration part, wire outlet seat is fixed on anti-vibration part, and anti-vibration part is fixed on display chassis or shell or chassis.
5. the wide range gas density relay of miniaturization according to claim 2 or 3, which is characterized in that further include sense
Thermometer bulb, the compensation gas are connected by connecting tracheae with temperature sensing package.
6. the wide range gas density relay of miniaturization according to claim 5, which is characterized in that the indicating value is shown
Mechanism is sealed in a shell, which is fixed on display chassis, and indicating value is made to be shown as absolute pressure, further includes being set to bottom
Gas tube on disk or display chassis or shell, can fill corresponding compensation gas with by gas tube.
7. the wide range gas density relay of miniaturization according to claim 6, which is characterized in that the displays temperature
Compensating element, includes：The compensation device or the compensation device filled with compensation gas that bimetal leaf is constituted, seal cavity outside packet
It is wrapped with insulating layer.
8. the wide range gas density relay of miniaturization according to claim 1, which is characterized in that further include vibrationproof machine
Structure, the vibration proof mechanism can play limit, positioning action to the component of signaling gear, prevent the component of signaling gear by
To swinging, rocking when vibratory impulse, raising vibration resistance is played.
9. the wide range gas density relay of miniaturization according to claim 1, which is characterized in that further include preventing from missing
Actuating mechanism, described prevents malfunction mechanism to be made of locating part.
10. the wide range gas density relay of miniaturization according to claim 7, which is characterized in that further include：It is set to
Watchcase outside the seal cavity is equipped with the anti-vibration pad of antivibration between the chassis and the watchcase.
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| CN201721626246.5U CN207752941U (en) | 2017-11-29 | 2017-11-29 | A kind of wide range gas density relay of miniaturization |
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| CN201721626246.5U CN207752941U (en) | 2017-11-29 | 2017-11-29 | A kind of wide range gas density relay of miniaturization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808798A (en) * | 2017-11-29 | 2018-03-16 | 上海乐研电气有限公司 | A kind of wide range gas density relay of miniaturization |
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- 2017-11-29 CN CN201721626246.5U patent/CN207752941U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808798A (en) * | 2017-11-29 | 2018-03-16 | 上海乐研电气有限公司 | A kind of wide range gas density relay of miniaturization |
| CN107808798B (en) * | 2017-11-29 | 2020-10-09 | 上海乐研电气有限公司 | Miniaturized wide-range gas density relay |
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