A kind of high-voltage switch gear
Technical field
The present invention relates to a kind of switches, and in particular to a kind of high-voltage switch gear.
Background technique
Existing high-voltage switch gear mainly acquires the pressure in pipeline using the linkage of diaphragm and microswitch, to carry out electricity
Road switching, limitation pressure.
The structure of existing high-voltage switch gear is generally as depicted in figs. 1 and 2, the mounting base 902 including being fixedly connected and installation lid
901, wherein pushed down in mounting base 902 equipped with fluid cavity 9021 and the installation cavity 9022 being connected with fluid cavity, pressing plate 906
904 periphery of diaphragm, is fixed on its periphery in installation cavity 9022, and diaphragm is usually silica gel material, and diaphragm periphery is played sealing and made
With high-pressure fluid cannot be by diaphragm, and middle part can deformation occurs according to Fluid pressure for diaphragm;It is then equipped with and film in installation lid 901
The microswitch 903 that piece is linked, microswitch have a linkage portion 9031 and a contact.High-voltage switch gear further includes one
A pressure spring 905 in compressive state, spring one end are resisted against between linkage portion 9031 and installation lid 901.
High-pressure fluid enters the fluid cavity 9021 of mounting base, by 9023 inlet membrane of channel lower section, when high-pressure fluid
Pressure is greater than trigger value, and diaphragm pushes linkage portion to overcome the spring force of pressure spring mobile towards installation lid direction.Work as microswitch
Linkage portion touch the contact of microswitch, switch disconnects.
In the prior art, the differential movement of high-voltage switch gear is determined by the differential movement of microswitch, the differential row of microswitch
Journey differs greatly, the requirement of pressure difference needed for not being able to satisfy high-voltage switch gear, and cannot be guaranteed the consistency of product;Also, due to
Microswitch and pressure spring are sealingly disposed between mounting base and installation lid, the pressure needed for needing to adjust high-voltage switch gear
When poor, microswitch or pressure spring could be replaced after the fixing screws between mounting base and installation lid need to be unclamped, is not only replaced
Process is fairly time consuming, laborious;And after plastic spiral nail hole assembles tapping repeatedly, it is also easy sliding teeth.
Summary of the invention
The present invention provides a kind of high-voltage switch gear, solve the problems, such as that existing high-voltage switch gear differential movement differs greatly.
A kind of high-voltage switch gear, including shell are equipped with installation cavity in shell, are equipped with diaphragm in the installation cavity, in the shell
It is slidably fitted with STATEMENT OF FEDERALLY SPONSORED, pressure spring has been abutted between the STATEMENT OF FEDERALLY SPONSORED and shell, the diaphragm passes through STATEMENT OF FEDERALLY SPONSORED and pressure regulation bullet
Spring linkage, and be additionally provided in the installation cavity and driven and connection or the switch for cutting off circuit by the STATEMENT OF FEDERALLY SPONSORED, the switch includes:
The first inserted sheet of installation on the shell, first inserted sheet have in the intermediate reed between diaphragm and STATEMENT OF FEDERALLY SPONSORED,
Springs in middle on piece has the linkage hole passed through for the STATEMENT OF FEDERALLY SPONSORED;
The second inserted sheet of installation on the shell, second inserted sheet have the circuit communication portion in shell;
The third inserted sheet of installation on the shell, the third inserted sheet have the circuitry cuts portion in shell;
The free end of the intermediate reed have by STATEMENT OF FEDERALLY SPONSORED drive and respectively with circuitry cuts portion or circuit communication portion phase
The circuit switching part of contact.
In the present invention, under the driving of STATEMENT OF FEDERALLY SPONSORED, the circuit switching part of intermediate reed is in circuitry cuts portion and circuit communication
It swings back and forth between portion, to realize the connection or cutting of high voltage switch circuit.The differential movement of switch by the second inserted sheet electricity
The distance between circuitry cuts portion of road interconnecting part and third inserted sheet determines;On the shell due to the second inserted sheet and third inserted sheet
Installation site is fixed, therefore the distance between circuit communication portion and circuitry cuts portion are also difference that is determining, therefore switching
Dynamic stroke is also determination, can not only be ensured product consistency, and can be obtained high-voltage switch gear by adjusting pressure spring
Required pressure difference, the pressure difference requirement needed for meeting high-voltage switch gear significantly under different use occasions, further increases height
The scope of application to compress switch.
Preferably, the intermediate reed includes elastic joint part, the fixing end of the elastic joint part is fixed on first and inserts
On piece, the circuit switching part are located on the free end of the elastic joint part;
Mounting hole is offered on the elastic joint part, is equipped in the mounting hole for driving circuit switching part to connect in circuit
The elastic actuating member moved between logical portion and circuitry cuts portion;
The fixing end of the elastic actuating member and the fixing end of elastic joint part are wholely set, the freedom of the elastic actuating member
Waist drum spring has been abutted between end and the free end of elastic joint part.
Under the promotion of STATEMENT OF FEDERALLY SPONSORED, elastic actuating member swings back and forth, and affects waist drum spring, to drive elastic joint part free
The circuit switching part at end toggles between circuit communication portion and circuitry cuts portion.
In the present invention, the shell includes the mounting base being tightly connected and installation lid, be equipped in the mounting base fluid cavity,
And the first installation cavity being connected with the fluid cavity, the interior pressure regulation being equipped with for accommodating the pressure spring of installation lid
Chamber and the second installation cavity being connected with the pressure regulating cavity, second installation cavity and the first installation cavity surround the installation cavity, institute
Diaphragm is stated to be arranged in first installation cavity.
Preferably, the STATEMENT OF FEDERALLY SPONSORED includes the connecting rod being slidably mounted in the pressure regulating cavity and is slidably mounted on described
Reset seat in first installation cavity, the reset seat are equipped with groove towards the end face of connecting rod, and wherein one end of the connecting rod is protruded into
Second installation cavity is simultaneously inserted into the groove behind the linkage hole, which is slidably matched with groove;
The middle part of the elastic actuating member is arranged in the linkage hole, deviates from the side of diaphragm, the company in intermediate reed
Bar periphery is equipped with the third stop collar for squeezing linkage outer end of hole face.
The setting of groove can guarantee that connecting rod links in the axial direction with reset seat, between the two be not in slipping phenomenon.
Connecting rod drives elastic actuating member mobile by the interaction between its third stop collar and linkage outer end of hole face.
As further preferred, the pressing plate of tubular is also equipped in first installation cavity, which is in reset seat
Periphery, press the periphery of diaphragm for wherein one end of pressing plate, and is equipped between reset seat and pressing plate for reset seat to be limited in the
The first locating part in one installation cavity.
Sealing function is played in the outer peripheral edge of diaphragm, prevents fluid from entering in installation cavity;It the middle part of diaphragm then can be by fluid pressure
Power squeezes and elastic deformation occurs, and under diaphragm driving, reset seat is then slided in tubular pressing plate.
Preferably, first locating part includes the first stop collar that reset seat periphery is arranged in, the pressing plate direction
At the cylindrical-opening of connecting rod side have the first in-flanges, first in-flanges and the first stop collar phase separation, and reset seat and
First in-flanges is slidably matched.
Similarly, the second locating part for being limited in connecting rod in pressure regulating cavity is equipped between the installation lid and connecting rod;
Second locating part includes the second stop collar that connecting rod periphery is arranged in, and pressure regulating cavity of the installation lid towards diaphragm side is opened
The second in-flanges, second in-flanges and the second stop collar phase separation are had at mouthful, and connecting rod is matched with second in-flanges sliding
It closes;
Deviate from the side of the second in-flanges in the second stop collar, the pressure regulating cavity internal screw thread is equipped with regulator bolts, described
Pressure spring is connected between the regulator bolts and the second stop collar.
Regulator bolts can be directly threaded onto pressure regulating cavity from installation outer side of lid, be so conveniently replaceable with different bullets
The pressure spring of power meets the different pressures difference requirement of high-voltage switch gear.
Elastic actuating member can be mobile to reset seat direction by the extruding of connecting rod, after the pressure from connecting rod disappears, is
Elastic actuating member and waist drum spring is helped to reset, preferably, the reset seat is equipped with towards the end face of connecting rod for squeezing
State the convex block of elastic actuating member.
Also, as further preferred, it is equipped between the reset seat and pressing plate for making convex block be directed at elastic actuating member
Circumferential locating part, which includes the limited block that reset seat periphery is arranged in, and setting in pressing plate inner surface and
The bar limit slot matched with the limited block, the bar limit slot are axially arranged along pressing plate.
It slide limited block can only along bar limit slot along the bar limit slot that pressing plate is axially arranged, thus reset seat
It will not circumferentially rotate, convex block can be directed at elastic actuating member always, guarantee that convex block promotes to make to the reset of elastic actuating member
With.
Preferably, the limited block has at least two.
In the present invention, it is respectively provided on the first inserted sheet, the second inserted sheet and third inserted sheet for preventing the first inserted sheet and shell
Between, the locking tooth that is loosened between the second inserted sheet and shell, between third inserted sheet and shell.The differential movement so switched
It more determines, homogeneity of product is higher.
Compared with prior art, the invention has the benefit that
In the present invention, under the driving of STATEMENT OF FEDERALLY SPONSORED, the circuit switching part of intermediate reed is in circuitry cuts portion and circuit communication
It swings back and forth between portion, to realize the connection or cutting of high voltage switch circuit;The differential movement of switch by the second inserted sheet electricity
The distance between circuitry cuts portion of road interconnecting part and third inserted sheet determines;On the shell due to the second inserted sheet and third inserted sheet
Installation site is fixed, therefore the distance between circuit communication portion and circuitry cuts portion are also difference that is determining, therefore switching
Dynamic stroke is also determination, can not only be ensured product consistency, and can be obtained high-voltage switch gear by adjusting pressure spring
Required pressure difference, the pressure difference requirement needed for meeting high-voltage switch gear significantly under different use occasions, further increases height
The scope of application to compress switch.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of prior art high-voltage switch gear;
Fig. 2 is the diagrammatic cross-section of Fig. 1;
Fig. 3 is a kind of structural schematic diagram of high-voltage switch gear of the present invention;
Fig. 4 is the diagrammatic cross-section of Fig. 3;
Fig. 5 is a kind of explosive view of high-voltage switch gear of the present invention;
Fig. 6 is the structural schematic diagram that lid is installed in Fig. 3;
Fig. 7 is the structural schematic diagram after the installation lid assembly switch in Fig. 3;
Fig. 8 is the structural schematic diagram after the installation lid assembly in Fig. 3 switchs under another visual angle;
1, installation lid;100, pressure regulating cavity;101, the second installation cavity;102, the second in-flanges;103, internal screw thread;104, first
Slot;105, the second slot;106, third slot;2, mounting base;200, fluid cavity;201, the first installation cavity;3, O-shaped sealing
Circle;4, end cap;5, pipe pawl;6, diaphragm;7, reset seat;701, the first stop collar;702, limited block;703, convex block;704, groove;
8, pressing plate;801, the first in-flanges;802, bar limit slot;9, fixing bolt;10, intermediate reed;1001, elastic joint part;
1002, elastic actuating member;1003, circuit switching part;1004, linkage hole;11, the second inserted sheet;1101, circuit communication portion;12,
One inserted sheet;13, waist drum spring;14, connecting rod;1401, the second stop collar;1402, third stop collar;15, pressure spring;16, pressure regulation
Bolt;17, third inserted sheet;1701, circuitry cuts portion;18, locking tooth.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings and detailed description.
As shown in figure 3, a kind of high-voltage switch gear of the present embodiment, including shell, shell includes mounting base 2 and by fixed spiral shell
The installation lid 1 that bolt 9 is fixedly connected with mounting base 2.
As shown in Figure 5, in conjunction with Fig. 4 as it can be seen that being equipped with fluid cavity 200, the input end of fluid cavity 200 and outlet in mounting base 2
End is connected with O-ring seal 3, end cap 4 and pipe pawl 5 in turn, and pipeline passes through pipe pawl 5 and is installed in mounting base 2, and and fluid cavity
200 are connected.
From fig. 4, it can be seen that fluid cavity 200 is connected by the fluid channel 202 being provided on its inner wall with the first installation cavity 201
It is logical;It installs and is equipped with pressure regulating cavity 100, and the second installation cavity 101 being connected with pressure regulating cavity 100 in lid 1;Second installation cavity 101
Closed installation cavity is encircled into the first installation cavity 201.
As shown in figure 4, being equipped with diaphragm 6 in the first installation cavity 201, and the periphery for compressing diaphragm 6 keeps diaphragm tight
Paste the tubular pressing plate 8 of 201 bottom surface of the first installation cavity.Sealing function is played in the outer peripheral edge of diaphragm 6, prevents fluid from entering the first installation
The upper space of chamber 201;Then by fluid pressure squeezes elastic deformation can be occurred for the middle part of diaphragm 6.
Pressure spring 15, pressure spring 15 and diaphragm 6 are installed to link by STATEMENT OF FEDERALLY SPONSORED in pressure regulating cavity 100, the STATEMENT OF FEDERALLY SPONSORED
Including reset seat 7 and connecting rod 14.Wherein, reset seat 7 opens up fluted 704 away from the end face of diaphragm 6, wherein one end of connecting rod 14
It is slidably matched with the groove 704;Connecting rod 14 and reset seat 7 are reciprocating inside the shell with change in fluid pressure.
Wherein, reset seat 7 is slidably mounted in tubular pressing plate 8, outwardly convex the first stop collar out of 7 peripheral zone of reset seat
701, pressing plate 8 is towards having the first in-flanges 801, and reset seat 7 and the first in-flanges 801 at the cylindrical-opening of 14 one end of connecting rod
It is slidably matched.When reset seat 7 is mobile towards installation lid 1 and the first stop collar 701 resists the first in-flanges 801 of pressing plate, reset
7 stop motions of seat, so that reset seat 7 is limited in tubular pressing plate 8.
And connecting rod 14 is then slidably mounted in pressure regulating cavity 100,14 periphery of connecting rod has the second stop collar 1401, installs lid 1
There is the second in-flanges 102 towards 100 opening of pressure regulating cavity of 6 side of diaphragm, when connecting rod 14 is mobile to 2 direction of mounting base and
When second stop collar 1401 resists the second in-flanges 102,14 stop motion of connecting rod, so that connecting rod 14 be prevented to be detached from pressure regulating cavity 100.
As shown in Figure 8, in conjunction with Fig. 4 and Fig. 5 as it can be seen that deviating from the side of the second in-flanges 102, tune in the second stop collar 1401
The inner wall of chamber 100 is pressed to be equipped with the internal screw thread 103 for installing regulator bolts 16, pressure spring 15 is connected to the regulator bolts
16 and second between stop collar 1401.
As shown in Figure 4, in conjunction with Fig. 5 as it can be seen that being additionally provided in installation cavity by STATEMENT OF FEDERALLY SPONSORED driving and connection or cutting circuit
Switch.
In the present embodiment, switch includes the first inserted sheet 12, the second inserted sheet 11, third inserted sheet 17, installs and opens up respectively on lid 1
There are the first slot 104 for installing the first inserted sheet 12, the second slot 105 for installing the second inserted sheet 11 and for pacifying
Fill the third slot 106 of third inserted sheet 17.
As seen from Figure 5, the first inserted sheet 12, the second inserted sheet 11 and third inserted sheet 17 are L-shaped.Wherein, the first inserted sheet 12 has
It is inserted vertically into portion and horizontal connection portion, the second inserted sheet 11 has the portion that is inserted vertically into and horizontal circuit communication portion 1101, third
Inserted sheet 17 has the portion that is inserted vertically into and horizontal circuitry cuts portion 1701;First inserted sheet 12, the second inserted sheet 11 and third inserted sheet 17
The portion of being inserted vertically into be respectively and fixedly installed in the first slot 104, the second slot 105 and third slot 106, be respectively inserted vertically into portion
Two sides on have pairs of locking tooth 18, the logarithm of locking tooth 18 can according to need specific setting, locking tooth 18
For preventing from loosening between the first inserted sheet 12, the second inserted sheet 11 and third inserted sheet 17 and installation lid 1.
As shown in figs. 4 and 7, in conjunction with Fig. 5 and Fig. 8 as it can be seen that the first slot 104 is located at installation lid side, the second slot 105
It is located at the other side of installation lid with third slot 106, the second slot 105 and third slot 106 are opposite and are arranged in parallel, and first inserts
Slot 104 open up direction and the second slot 105 and third slot 106 to open up direction perpendicular;First inserted sheet 12, as a result,
After two inserted sheets 11 and third inserted sheet 17 are installed, circuit communication portion 1101 and about 1701 circuitry cuts portion and it is arranged in parallel, the two
The distance between be switch differential movement, intermediate reed 10 is fixed in the horizontal connection portion of the first inserted sheet 12, among this
The free end of reed 10 extends between circuit communication portion 1101 and circuitry cuts portion 1701.
In the present embodiment, the differential movement of switch is by the circuit communication portion 1101 of the second inserted sheet 11 and the electricity of third inserted sheet 17
The distance between road cutting portion 1701 determines, is controlled the otherness of poor journey, ensure that the consistency of product.
In the present embodiment, intermediate reed 10 includes elastic joint part 1001, and the fixing end of elastic joint part 1001 is fixed on
In the horizontal connection portion of first inserted sheet 12, the free end of elastic joint part 1001 then extends to circuit communication portion 1101 and circuit is cut
Between disconnected portion 1701, and have circuit switching part 1003 (i.e. contact).When circuit switching part 1003 contacts circuit communication portion 1101
When, switch is in connected state, and when circuit switching part 1003 contacts circuitry cuts portion 1701, switch is in an off state.
According to specific needs, contact also can be set in circuit communication portion 1101 or circuitry cuts portion 1701, to reduce
The electric current in resistance, enhancing circuit in circuit, improves switch sensitivity.
As seen from Figure 5, mounting hole is offered on elastic joint part 1001, be equipped in the mounting hole for driving circuit to switch
The elastic actuating member 1002 that portion 1003 moves between circuit communication portion 1101 and circuitry cuts portion 1701, the elastic actuating member
1002 fixing end and the fixing end of elastic joint part 1001 are wholely set, and the free end of the elastic actuating member 1002 and elasticity are even
Abutting between the free end of socket part 1001 has waist drum spring 13.
As shown in Figure 8, in conjunction with Fig. 4 as it can be seen that the middle part of elastic actuating member 1002 offers the linkage hole passed through for connecting rod 14
1004;Also, deviate from the side of diaphragm 6 in elastic actuating member 1002,14 periphery of connecting rod is equipped with for squeezing outside linkage hole 1004
The third stop collar 1402 of end face.
When connecting rod 14 is mobile to 2 direction of mounting base, third stop collar 1402 can squeeze the outer end face in linkage hole 1004, push away
Dynamic elasticity driving portion 1002 is mobile to 2 direction of mounting base.
As shown in Figure 5, in conjunction with Fig. 4 as it can be seen that reset seat 7 is equipped with convex block 703 towards the end face of connecting rod 14, when reset seat 7
When mobile to installation 1 direction of lid, convex block 703 can squeeze elastic actuating member 1002, push elastic actuating member 1002 to installation 1 side of lid
To movement.
Meanwhile 7 periphery of reset seat also sets up two limited blocks being oppositely arranged 702,8 inner surface of pressing plate is equipped with and the limit
The bar limit slot 802 that block 702 matches, the bar limit slot 802 is along the axial arrangement of pressing plate 8.Limited block 702 and bar shaped limit
Slot 802 cooperates, and can prevent reset seat 7 from circumferentially rotating in sliding, guarantees that convex block 703 can be directed at elastic actuating member
1002。
Under the promotion of reset seat 7 or connecting rod 14, elastic actuating member 1002 swings back and forth, and affects waist drum spring 13, thus band
The circuit switching part 1003 of 1001 free end of dynamic elasticity interconnecting piece comes between circuit communication portion 1101 and circuitry cuts portion 1701
Switchback is changed.
When work, first by 5 connecting pipe of pipe pawl at mounting base both ends, it is assumed that fluids within pipes are high pressure gas.High pressure
Gas enters the fluid cavity 200 of mounting base 2, and pipe pawl compresses sealing ring 3 at this time, prevents 200 gas leakage of fluid cavity.High pressure gas passes through
Fluid channel 202 enters the second installation cavity 201, and since the periphery of diaphragm 6 is pushed down in the sealing of pressing plate 8, gas cannot pass through diaphragm 6.
Under the flexible drive of pressure spring 15, the third stop collar 1402 of connecting rod 14 resists elastic actuating member 1002, switches circuit
Portion 1003 is in contact with circuit communication portion 1101, and high-voltage switch gear is in connected state.
When air pressure reaches trigger value, the thrust that high pressure gas generates is greater than the elastic force of pressure spring 15, and high pressure gas drives
Keep diaphragm 6 mobile to installation 1 direction of lid, diaphragm 6 drives reset seat 7 to move synchronously.Convex block 703 in reset seat 7 resists elasticity
Driving portion 1002 pushes elastic actuating member 1002 mobile to installation 1 direction of lid close to the surface of mounting base 2.Elastic actuating member
1002 affect waist drum spring 13, and circuit switching part 1003 is driven to separate with circuit communication portion 1101, and with 1701 phase of circuitry cuts portion
Contact, at this point, high-voltage switch gear is in an off state.
On the contrary, the thrust that high pressure gas generates is less than pressure regulation bullet when in fluid cavity 200 gas pressure is lower than trigger value
The elastic force of spring 15, pressure spring 15 drive connecting rod 14 mobile to the direction of mounting base 2, and connecting rod 14 pushes reset seat 7 to reset.Together
When, the third stop collar 1402 of connecting rod 14 resists elastic actuating member 1002 close to the surface of installation lid 1, pushes elastic actuating member
1002 is mobile to 2 direction of mounting base.Elastic actuating member affects waist drum spring 13, drives circuit switching part 1003 and circuitry cuts portion
1701 separation, and be in contact with circuit communication portion 1101, at this point, high-voltage switch gear is in connected state.