CN206378243U - Manometric switching device - Google Patents
Manometric switching device Download PDFInfo
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- CN206378243U CN206378243U CN201720001725.1U CN201720001725U CN206378243U CN 206378243 U CN206378243 U CN 206378243U CN 201720001725 U CN201720001725 U CN 201720001725U CN 206378243 U CN206378243 U CN 206378243U
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Abstract
The utility model provides a kind of manometric switching device, including：Housing, hollow valve seat, pull bar, return springs；The inside of housing is provided through first passage, and the vias inner walls of the first port of first passage are provided with hollow valve seat, and pull bar movable insertion is located in first passage；Vias inner walls close to the second port of first passage are fixedly installed return springs；Housing is internally provided with the second channel vertical with first passage；When the end under tension of pull bar, the head end of pull bar is moved to the second port of first passage so that first passage is connected with second channel；When the head end of pull bar is moved to the second port of first passage, return springs are in compressive state；When the pulling force suffered by the end of pull bar is eliminated, under the elastic force effect of return springs, the head end of pull bar is moved to hollow valve seat so that the head end of pull bar and hollow valve seat palette.Realize to manometric protection, improve manometric service life.
Description
Technical field
The utility model is related to oil gas technical field, more particularly to a kind of manometric switching device.
Background technology
During oil gas opens spy, it is necessary process to implement the control of Oil/gas Well pressure monitoring.Wherein, pressure gauge is pressure prison
The important tool of survey.
During existing pressure monitoring, down-hole pressure is transmitted to the preventer of well head and choke manifold by sleeve pipe,
Pressure enters after choke manifold by a larger valve (normally opened) to stop valve；When stop valve is in opening state, then
Pressure continues through stop valve and transmits the lower range pressure gauge connected to stop valve, carries out pressure measxurement；When stop valve is in
During closed mode, then pressure can not transmit the lower range pressure gauge connected to stop valve by stop valve.Wherein, lower range pressure
The stop valve of power table front end should be closed when that need not measure pressure.
On the one hand because existing stop valve is that, by the metal sealing of linear contact lay, its seal failure rate is higher, due to
Lower range pressure gauge is easily caused after stop valve seal failure and is chronically at the state of building the pressure, so as to be easily damaged low amounts stroke pressure
Table.On the other hand existing stop valve needs manually to turn off or on, when that need not measure pressure, due to may manually close
Close not in place or forget to close, high pressure (exceeding the manometric maximum range of lower range) may be caused to transmit to lower range pressure
Power table, so as to be easily damaged lower range pressure gauge.
Utility model content
The utility model provides a kind of manometric switching device, realizes to manometric protection, improves pressure gauge
Service life.
The utility model provides a kind of manometric switching device, including：Housing, hollow valve seat, pull bar, Flexible Reset
Part；
Wherein, wherein, the inside of the housing is provided through first passage, close to the first passage first port
Vias inner walls be provided with the hollow valve seat, the pull bar movable insertion is located in the first passage, the end of the pull bar
The second port of the first passage is stretched out at end；
Vias inner walls close to the second port of the first passage are fixedly installed the return springs；
The housing is internally provided with the second channel vertical with the first passage；Wherein, the first passage with
The position that the second channel crosses is in the range of the moveable position of the head end of the pull bar；
When the end under tension of the pull bar, the second port from the head end of the pull bar to the first passage
It is mobile so that the first passage is connected with the second channel, form pressure test passage；Wherein, as the head of the pull bar
Hold to during the second port movement of the first passage, the return springs are in compressive state；
When the pulling force suffered by the end of the pull bar is eliminated, under the elastic force effect of the return springs,
The head end of the pull bar is moved to the hollow valve seat so that the head end of the pull bar and the hollow valve seat palette.
In a possible design, the hollow valve seat includes：Hollow fixed part and hollow seal portion；Wherein, institute
The vias inner walls that hollow fixed part is arranged at the first passage are stated, the hollow seal portion is arranged at the hollow fixed part and leaned on
One end of the nearly pull bar, the hollow seal portion is used for the head end palette with the pull bar.
In a possible design, the head end of the pull bar is taper；The inner surface in the hollow seal portion is taper
Face.
In a possible design, the part that the return springs are arranged with the outer surface of the pull bar is provided with
Groove.
In a possible design, the predetermined position of head end described in distance is provided with close in the outer surface of the pull bar
Seal.
In a possible design, the sealing ring is rubber seal.
In a possible design, the end of the pull bar is provided with handle.
In a possible design, the return springs are back-moving spring.
In a possible design, fixture is provided with the second port of the first passage；It is described
Fixture is used to fix the pull bar.
In a possible design, the head end of the hollow seal portion and the pull bar is all metal.
The manometric switching device that the embodiment of the present application is provided, including：Housing, hollow valve seat, pull bar, Flexible Reset
Part；Wherein, the inside of the housing is provided through first passage, close to the vias inner walls of the first port of the first passage
The hollow valve seat is provided with, the pull bar movable insertion is located in the first passage, the end of the pull bar stretches out described
The second port of first passage；Vias inner walls close to the second port of the first passage are fixedly installed the reset
Elastic component；The housing is internally provided with the second channel vertical with the first passage；Wherein, the first passage and institute
In the range of the moveable position for stating head end of the position in the pull bar that second channel crosses；When the pull bar end by
During pulling force, the head end of the pull bar is moved to the second port of the first passage so that the first passage with it is described
Second channel is connected, and forms pressure test passage；Wherein, when the head end of the pull bar is to second end of the first passage
When mouth is mobile, the return springs are in compressive state；When the pulling force suffered by the end of the pull bar is eliminated,
Under the elastic force effect of the return springs, the head end of the pull bar is moved to the hollow valve seat so that the head of the pull bar
End and the hollow valve seat palette.It can be seen that, by when needing to carry out pressure test using pressure gauge, in the pull bar
End applies pulling force, and to the second port movement of the first passage, (now, return springs are in pressure to the head end of the pull bar
Contracting state) so that the first passage is connected with the second channel, forms pressure test passage, so as to from described first
The pressure that the first port of passage enters is measured.When measurement is finished, eliminate in the drawing suffered by the end of the pull bar
Power, under the elastic force effect of the return springs, the head end of the pull bar is moved to the hollow valve seat so that the pull bar
Head end and the hollow valve seat palette, i.e., described first passage disconnects with the second channel so that from described first
The pressure that the first port of passage enters can not be transmitted into pressure gauge, so as to realize to manometric protection, improve pressure
The service life of table.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Figure 1A is the structural representation one of the manometric switching device embodiment one of the application utility model；
Figure 1B is the structural representation two of the manometric switching device embodiment one of the application utility model；
Fig. 2 is the structural representation of the manometric switching device embodiment two of the application utility model；
Fig. 3 is the structural representation of the manometric switching device embodiment three of the application utility model；
Fig. 4 is the structural representation of the manometric switching device example IV of the application utility model.
Description of reference numerals：
1：Housing；
2：Hollow valve seat；
2a：Hollow fixed part；
2b：Hollow seal portion；
3：Pull bar；
3a：The head end of pull bar；
3b：The end of pull bar；
3c：Groove；
3d：Handle；
4：Return springs；
5：First passage；
5a：The first port of first passage；
5b：The second port of first passage；
6：Second channel；
7：Sealing ring；
8：Fixture.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
The noun involved by the application is explained first：
(1) preventer
Preventer is to be used to close well head in the operation process such as formation testing, well workover, completion, prevents gas blowout accident.Specifically
Ground, in oil drilling, preventer be arranged on casing head of well head on, for control hydraulic oil, gas and water blowout apparatus.In well
When interior oil-air pressure is very high, preventer can close well head and (shut).When being pressed into weighted mud out of drilling rod, have four under its flashboard
It is logical, alternatively go out the pressure of fluid column in the mud by gas cut, increase well, to push down the ejection of high-pressure oil gas.
(2) choke manifold
Choke manifold is one of main well control device for handling overflow, well kick and blowout.Down-hole pressure passes through sleeve pipe
Transmit to well head, transmit to preventer and transmitted to the right to choke manifold upwards.Wherein, the effect of choke manifold mainly includes
The following aspects：
A) under preventer closedown condition, using unlatching/closing of the choke valve of choke manifold, certain casing pressure is controlled
Bottom pressure is maintained to be slightly larger than strata pressure all the time, so as to avoid in formation fluid access wall.
B) when implementing closing well, soft closing can be realized with choke manifold pressure release.
C) when borehole pressure is increased to certain limit, remit open flow to protect well head by throttle pipe.Specifically, well is worked as
During interior pressure rise, can by the unlatching of choke valve on choke manifold (having manual adjustable, hydrodynamic and fixed three kinds)/
Close to discharge borehole fluid to control casing pressure.
D) when overflow occurs, kill-job operation is implemented by the throttling action of the choke valve of choke manifold, replaced out in well
Contaminated drilling fluid controls wellhead casing pipe pressure and standpipe pressure simultaneously, recovers Stress control of the drilling fluid column to shaft bottom.
E) reached that drilling fluid is separated into separator, recycled by the shunting action of choke manifold, and
Aerial drainage effect is carried out by relief line.
F) casing pressure and vertical pressure can at any time be monitored in long-range and short range.
The manometric switching device provided below in conjunction with the accompanying drawings by specific embodiment the embodiment of the present application carries out detailed
Describe in detail bright.
Figure 1A is the structural representation one of the manometric switching device embodiment one of the application utility model, and Figure 1B is this Shen
Please the manometric switching device embodiment one of utility model structural representation two.With reference to shown in Figure 1A and Figure 1B, the present embodiment
Manometric switching device include：Housing 1, hollow valve seat 2, pull bar 3 and return springs 4.Wherein, the inside of housing 1
First passage 5 is provided through, the vias inner walls close to the first port 5a of first passage 5 are provided with hollow valve seat 2, pull bar 3
Movable insertion is located in first passage 5, and the end 3b of pull bar 3 stretches out the second port 5b of first passage 5；Close to first passage 5
Second port 5b vias inner walls be fixedly installed return springs 4；Being internally provided with for housing 1 is vertical with first passage 5
Second channel 6；Wherein, first passage 5 is in the head end 3a of pull bar 3 moveable position with the position that second channel 6 crosses
In the range of.
I) when the end 3b under tensions of pull bar 3, the head end 3a of pull bar 3 is moved to the second port 5b of first passage 5,
So that first passage 5 is connected with second channel 6, pressure test passage is formed；Wherein, when the head end 3a of pull bar 3 is to first passage 5
Second port 5b movement when, return springs 4 be in compressive state；II) when the pulling force suffered by the end 3b of pull bar 3 is eliminated
When, return springs 4 elastic force effect under, the head end 3a of pull bar 3 is moved to hollow valve seat 2 so that the head end 3a of pull bar 3 with
The hollow palette of valve seat 2.
With reference to shown in Figure 1A and Figure 1B, the inside of the housing 1 of the manometric switching device of the present embodiment is provided through
First passage 5, the vias inner walls close to the first port 5a of first passage 5 are provided with hollow (alternatively, first passage 5 of valve seat 2
First port 5a be into pressing mouth), the movable insertion of pull bar 3 is located in first passage 5 that (i.e. pull bar 3 can in the presence of external force
Moved in first passage 5), the end 3b of pull bar 3 stretches out the second port 5b of first passage 5, in order in the end of pull bar 3
3b applies pulling force；It is (alternatively, multiple that return springs 4 are fixedly installed close to the second port 5b of first passage 5 vias inner walls
Position elastic component 4 can be back-moving spring), wherein, when the end 3b of pull bar 3 is under a stretching force to the bearing of trend of first passage
Mobile (partial variable-length that i.e. the end 3b of pull bar 3 is stretched out outside the second port 5b of first passage 5, or, the head end of pull bar 3
3a is moved to the second port 5b of first passage 5) when, return springs 4 are in compressive state；Housing 1 be internally provided with
The vertical second channel 6 of first passage 5 (alternatively, the end of second channel 6 is used to connect pressure gauge)；Wherein, first passage 5
It is in the position that second channel 6 crosses in the range of the head end 3a of pull bar 3 moveable position, in order to when the end of pull bar 3
During 3b under tensions, the partial variable-length outside the second port 5b of the end 3b stretching first passages 5 of pull bar 3, while pull bar 3
Head end 3a is moved to the second port 5b of first passage 5 so that first passage 5 is connected with second channel 6, is formed pressure test and is led to
(i.e. pressure enters from the first port 5a of first passage 5, enters pressure gauge along first passage 5 and second channel 6, carries out in road
Pressure measxurement).Alternatively, pressure gauge can be lower range pressure gauge (for example, maximum range is no more than 16MPa), certainly, pressure
Table can be restricted with the pressure gauge of other range types in the embodiment of the present application to this.
As shown in Figure 1B, when needing to carry out pressure test using pressure gauge, pulling force is applied in the end 3b of pull bar 3,
In the presence of the pulling force, the partial variable-length outside the second port 5b of the end 3b stretching first passages 5 of pull bar 3, and pull bar 3
Second port 5b movements (now, return springs 4 be in compressive state) from head end 3a to first passage 5 so that first leads to
Road 5 is connected with second channel 6, forms pressure test passage, so that the pressure to the first port 5a entrance from first passage 5 enters
Row measurement.
As shown in Figure 1A, when pressure test need not be carried out using pressure gauge (measurement is finished), eliminate at the end of pull bar 3
The pulling force suffered by 3b is held, (i.e. return springs 4 are understood from compressive state to uncompressed under the elastic force effect of return springs 4
State Transferring), the head end 3a of pull bar 3 moves that (i.e. the end 3b of pull bar 3 stretches out the second port of first passage 5 to hollow valve seat 2
Part outside 5b shortens) so that the head end 3a of pull bar 3 and the hollow palette of valve seat 2, i.e. first passage 5 and second channel 6
Disconnect so that can not be transmitted from the first port 5a of first passage 5 pressure entered into pressure gauge, so as to realize to pressure gauge
Protection.
The manometric switching device of the present embodiment includes：Housing 1, hollow valve seat 2, pull bar 3 and return springs 4.
Wherein, the inside of housing 1 is provided through first passage 5, and the vias inner walls close to the first port 5a of first passage 5 are provided with
Hollow valve seat 2, the movable insertion of pull bar 3 is located in first passage 5, and the end 3b of pull bar 3 stretches out the second port of first passage 5
5b；Vias inner walls close to the second port 5b of first passage 5 are fixedly installed return springs 4；Housing 1 is internally provided with
The second channel 6 vertical with first passage 5；Wherein, first passage 5 is in the head end of pull bar 3 with the position that second channel 6 crosses
In the range of 3a moveable position.When the end 3b under tensions of pull bar 3, the head end 3a of pull bar 3 is to the second of first passage 5
Port 5b is moved so that first passage 5 is connected with second channel 6, forms pressure test passage；Wherein, as the head end 3a of pull bar 3
When being moved to the second port 5b of first passage 5, return springs 4 are in compressive state；When suffered by the end 3b of pull bar 3
When pulling force is eliminated, under the elastic force effect of return springs 4, the head end 3a of pull bar 3 is moved to hollow valve seat 2 so that pull bar 3
Head end 3a and the hollow palette of valve seat 2.It can be seen that, by when needing to carry out pressure test using pressure gauge, at the end of pull bar 3
3b is held to apply pulling force, (now, return springs 4 are in pressure to the head end 3a of pull bar 3 to the second port 5b movements of first passage 5
Contracting state) so that first passage 5 is connected with second channel 6, forms pressure test passage, so as to from the first of first passage 5
The pressure that port 5a enters is measured.When measurement is finished, the pulling force suffered by the end 3b in pull bar 3 is eliminated, is being resetted
Under the elastic force effect of elastic component 4, the head end 3a of pull bar 3 is moved to hollow valve seat 2 so that the head end 3a of pull bar 3 and hollow valve seat 2
Palette, i.e. first passage 5 disconnect with second channel 6 so that can not from the first port 5a of first passage 5 pressure entered
Transmit into pressure gauge, so as to realize to manometric protection, improve manometric service life.
Fig. 2 is the structural representation of the manometric switching device embodiment two of the application utility model.In above-described embodiment
On the basis of, the part that return springs 4 are arranged with the outer surface of pull bar 3 sets fluted 3c.Alternatively, in pull bar 3
When head end 3a is with hollow 2 palette of valve seat, return springs 4 are sheathed in groove 3c；When the end 3b of pull bar 3 applies pulling force
When, the head end 3a of pull bar 3 is moved to the second port 5b of first passage 5, is driven and is resetted close to head end 3a edge in groove 3c
The movable terminal of elastic component 4 is moved to the fixing end of return springs 4 so that return springs 4 are in compressive state；Work as pull bar
When pulling force suffered by 3 end 3b is eliminated, (the i.e. movable terminal of return springs 4 under the elastic force effect of return springs 4
Moved to the direction of the fixing end away from return springs 4), the head end 3a of pull bar 3 is moved to hollow valve seat 2, until pull bar 3
Head end 3a and the hollow palette of valve seat 2.
It can be seen that, realize when needing to carry out pressure test using pressure gauge, apply pulling force in the end 3b of pull bar 3, draw
The head end 3a of bar 3 is moved (now, return springs 4 are in compressive state) to the second port 5b of first passage 5 so that first
Passage 5 is connected with second channel 6, forms pressure test passage, so as to the pressure to the first port 5a entrance from first passage 5
Measure.When measurement is finished, the pulling force suffered by the end 3b in pull bar 3 is eliminated, is acted in the elastic force of return springs 4
Under, the head end 3a of pull bar 3 is moved to hollow valve seat 2 so that the head end 3a of pull bar 3 and the hollow palette of valve seat 2, i.e., from first
The pressure that the first port 5a of passage 5 enters can not be transmitted into pressure gauge, so as to comprising pressure gauge, improve manometric
Service life.
Fig. 3 is the structural representation of the manometric switching device embodiment three of the application utility model.In above-described embodiment
On the basis of, as shown in figure 3, hollow valve seat 2 includes：Hollow fixed part 2a and hollow seal portion 2b；Wherein, hollow fixed part
2a is arranged at the vias inner walls of first passage 5, and hollow seal portion 2b is arranged at hollow fixed part 2a close to one end of pull bar 3, empty
Heart sealing 2b is used for the head end 3a palettes with pull bar 3.Alternatively, in order to ensure hollow seal portion 2b and pull bar 3 head
3a palettes are held, the shape of hollow seal portion 2b inner surface and the head end 3a of pull bar 3 matches, for example：The head end of pull bar 3
3a's is shaped as hemispherical, accordingly, and hollow seal portion 2b inner surface is the hemispherical face matched with the hemispherical.
Alternatively, the head end 3a of pull bar 3 is taper；Accordingly, hollow seal portion 2b inner surface is taper surface；It can be seen that,
The area that hollow seal portion 2b inner surface is in contact with the head end 3a of pull bar 3 is larger, thus improve hollow seal portion 2b with
The head end 3a sealing effectiveness of pull bar 3.Certainly, the head end 3a of pull bar 3 shape and hollow seal portion 2b inner surface configuration, also
It can be other shapes being mutually matched, this is not restricted in the embodiment of the present application.
Alternatively, heads of the head end 3a of hollow seal portion 2b and pull bar 3 all for metal, i.e. hollow seal portion 2b and pull bar 3
Metal sealing is realized between the 3a of end, its erosion control brushing effects is good, can block most of fluid.
Alternatively, as shown in figure 3, the sealing effectiveness of the head end 3a in order to further improve hollow seal portion 2b and pull bar 3,
Predetermined position in the outer surface of pull bar 3 apart from head end 3a is provided with sealing ring 7.Alternatively, sealing ring 7 is rubber seal
Circle, it is, of course, also possible to be not to be restricted to this in the sealing ring of other materials, the embodiment of the present application.Alternatively, predeterminated position
Can be head end 3a afterbody (being, for example, the bottom margin of taper), certainly, predeterminated position can also be other positions, the application
This is not restricted in embodiment.
It can be seen that, in the embodiment of the present application, rubber is added using metal sealing between the head end 3a of hollow seal portion 2b and pull bar 3
Seal form, can bear elevated pressures so that in head end 3a and hollow 2 palette of valve seat of pull bar 3, first passage 5 with
Second channel 6 is fully disconnected, it is ensured that can not be transmitted from the first port 5a of first passage 5 pressure entered into pressure gauge, real
Now to manometric protection.
Fig. 4 is the structural representation of the manometric switching device example IV of the application utility model.In above-described embodiment
On the basis of, for the ease of applying pulling force to the end 3b of pull bar 3, alternatively, the end 3b of pull bar 3 is provided with handle 3d.
Alternatively, on the basis of above-described embodiment, as shown in figure 4, being set at the second port 5b of first passage 5
There is fixture 8, alternatively, fixture 8 is used for steady brace 3, when needing to carry out pressure test using pressure gauge, to draw
The head end 3a that the end 3b of bar 3 applies pulling force and pull bar 3 has been moved into position (the i.e. head of pull bar 3 farthest away from hollow valve seat 2
End 3a can not continue the second port 5b directions movement to first passage 5), fixture steady brace 3 can be used, without
It is artificial to continue to apply pulling force in the end 3b of pull bar 3 to carry out pressure measxurement, Consumer's Experience can be improved.Alternatively, pressure is worked as
At the end of test, can rotate steady brace 3 make fixture 8 can not steady brace 3, return springs 4 elastic force effect under,
The head end 3a of pull bar 3 is moved to hollow valve seat 2 so that the head end 3a of pull bar 3 and the hollow palette of valve seat 2.Alternatively, it is fixed
Part 8 can be fixed stably nail, certainly, and fixture 8 can also use and this is not limited in other structures, the embodiment of the present application
System.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. a kind of manometric switching device, it is characterised in that including：Housing, hollow valve seat, pull bar and return springs；
Wherein, the inside of the housing is provided through first passage, in the passage of the first port of the first passage
Wall is provided with the hollow valve seat, and the pull bar movable insertion is located in the first passage, and institute is stretched out in the end of the pull bar
State the second port of first passage；
Vias inner walls close to the second port of the first passage are fixedly installed the return springs；
The housing is internally provided with the second channel vertical with the first passage；Wherein, the first passage with it is described
The position that second channel crosses is in the range of the moveable position of the head end of the pull bar；
When the end under tension of the pull bar, the head end of the pull bar is moved to the second port of the first passage
It is dynamic so that the first passage is connected with the second channel, form pressure test passage；Wherein, when the head end of the pull bar
When being moved to the second port of the first passage, the return springs are in compressive state；
It is described under the elastic force effect of the return springs when the pulling force suffered by the end of the pull bar is eliminated
The head end of pull bar is moved to the hollow valve seat so that the head end of the pull bar and the hollow valve seat palette.
2. manometric switching device according to claim 1, it is characterised in that the hollow valve seat includes：It is hollow solid
Determine portion and hollow seal portion；Wherein, the hollow fixed part is arranged at the vias inner walls of the first passage, described hollow close
Envelope portion is arranged at the hollow fixed part close to one end of the pull bar, and the hollow seal portion is used for the head end with the pull bar
Palette.
3. manometric switching device according to claim 2, it is characterised in that the head end of the pull bar is taper；Institute
The inner surface for stating hollow seal portion is taper surface.
4. the manometric switching device according to any one of claim 1-3, it is characterised in that the appearance of the pull bar
The part that the return springs are arranged with face sets fluted.
5. the manometric switching device according to any one of claim 1-3, it is characterised in that the appearance of the pull bar
The predetermined position of head end described in distance is provided with sealing ring in face.
6. manometric switching device according to claim 5, it is characterised in that the sealing ring is rubber seal.
7. the manometric switching device according to any one of claim 1-3, it is characterised in that the end of the pull bar
It is provided with handle.
8. the manometric switching device according to any one of claim 1-3, it is characterised in that the return springs
For back-moving spring.
9. the manometric switching device according to any one of claim 1-3, it is characterised in that lead to close to described first
Fixture is provided with the second port in road；The fixture is used to fix the pull bar.
10. the manometric switching device according to Claims 2 or 3, it is characterised in that the hollow seal portion and described
The head end of pull bar is all metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720001725.1U CN206378243U (en) | 2017-01-03 | 2017-01-03 | Manometric switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720001725.1U CN206378243U (en) | 2017-01-03 | 2017-01-03 | Manometric switching device |
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| Publication Number | Publication Date |
|---|---|
| CN206378243U true CN206378243U (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720001725.1U Active CN206378243U (en) | 2017-01-03 | 2017-01-03 | Manometric switching device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562049A (en) * | 2020-06-03 | 2020-08-21 | 合肥左心科技有限公司 | Pressure transmitter suitable for high-strength impact |
| CN111852454A (en) * | 2020-06-18 | 2020-10-30 | 四川恒铭泽石油天然气工程有限公司 | Channel switching method of automatic throttling pressure control system |
| CN113700878A (en) * | 2021-09-01 | 2021-11-26 | 致微(厦门)仪器有限公司 | Air escape valve and application thereof |
-
2017
- 2017-01-03 CN CN201720001725.1U patent/CN206378243U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562049A (en) * | 2020-06-03 | 2020-08-21 | 合肥左心科技有限公司 | Pressure transmitter suitable for high-strength impact |
| CN111562049B (en) * | 2020-06-03 | 2021-10-08 | 大庆市豪方石油科技有限公司 | Pressure transmitter suitable for high-strength impact |
| CN111852454A (en) * | 2020-06-18 | 2020-10-30 | 四川恒铭泽石油天然气工程有限公司 | Channel switching method of automatic throttling pressure control system |
| CN111852454B (en) * | 2020-06-18 | 2023-05-23 | 四川恒铭泽石油天然气工程有限公司 | Channel switching method of automatic throttle control system |
| CN113700878A (en) * | 2021-09-01 | 2021-11-26 | 致微(厦门)仪器有限公司 | Air escape valve and application thereof |
| CN113700878B (en) * | 2021-09-01 | 2024-05-03 | 致微(厦门)仪器有限公司 | Air escape valve and application thereof |
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