CN105023397B - Gas differential pressure warning system and its gas differential pressure alarm - Google Patents
Gas differential pressure warning system and its gas differential pressure alarm Download PDFInfo
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- CN105023397B CN105023397B CN201410172601.0A CN201410172601A CN105023397B CN 105023397 B CN105023397 B CN 105023397B CN 201410172601 A CN201410172601 A CN 201410172601A CN 105023397 B CN105023397 B CN 105023397B
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- venthole
- sliding block
- axle sleeve
- differential pressure
- gas differential
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Abstract
A kind of gas differential pressure alarm includes axle sleeve, sliding block, fixing axle, compression elastic piece and the acoustical generator of both ends open.Offered on the side wall of one end of axle sleeve and offer the second air admission hole on the first air admission hole, the side wall of the other end, venthole is offered on the side wall between the first air admission hole and the second air admission hole.Sliding block is contained in axle sleeve, and the lateral wall of sliding block and the madial wall of axle sleeve are tightly connected, sliding block along axle sleeve slidably.Two fixing axles fix the opening for the two ends sealing axle sleeve for being contained in axle sleeve respectively, and axle sleeve is divided into the first air cavity and the second air cavity by sliding block.Compression elastic piece is connected between sliding block and stub end.Acoustical generator is at venthole, venthole outlet, so that acoustical generator sounding.The air pressure of the first air cavity or the second air cavity is adjusted, sliding block returns and blocks venthole, acoustical generator stop alarm.Gas differential pressure alarm uses mechanical alarm, and cost of manufacture is relatively low.A kind of gas differential pressure warning system containing above-mentioned gas pressure difference alarm is also provided.
Description
Technical field
The present invention relates to a kind of warning device, more particularly to gas differential pressure warning system and its gas differential pressure alarm.
Background technology
Current gas differential pressure alarm generally by pressure difference switch or differential pressure pickup is installed, then by assembling pressure difference
Instrument or connection alarm lamp realize alarm.Most pressure difference warning device is all electronically controlled, uses electronically controlled pressure difference report
Alarm device cost is high.
The content of the invention
Based on this, it is necessary to provide a kind of lower-cost gas differential pressure warning system and its gas differential pressure alarm.
A kind of gas differential pressure alarm, including：
Offered on the axle sleeve of both ends open, the side wall of one end of the axle sleeve on the first air admission hole, the side wall of the other end
Offer and offer venthole on the second air admission hole, the side wall between first air admission hole and second air admission hole；
Sliding block, is contained in the axle sleeve, and the madial wall of the lateral wall of the sliding block and the axle sleeve is tightly connected, described
Sliding block along the axle sleeve slidably, so as to sliding block sealing or open the venthole；
Two fixing axles, fix the two ends for being contained in the axle sleeve respectively, and the fixing axle includes stub end and small head end,
The stub end seals the opening of the axle sleeve, and the axle sleeve is divided into the first air cavity and the second air cavity by the sliding block；
Two compression elastic pieces, are sheathed on two small head ends, the compression elastic piece is connected to the cunning respectively
Between block and the stub end；And
Acoustical generator, at the venthole, the venthole outlet, so that the acoustical generator sounding；
Wherein, the sliding block, which is slided, can open the venthole, the venthole outlet, the acoustical generator sounding report
It is alert, the air pressure of first air cavity or second air cavity is adjusted, the sliding block returns and blocks the venthole, the acoustical generator
Stop alarm.
In one of the embodiments, first air admission hole and second air admission hole be it is multiple, multiple described first
Air admission hole is located on same section, and multiple second air admission holes are located on same section.
In one of the embodiments, the venthole includes the first venthole and the second venthole, first outlet
Hole is set close to first air admission hole, and second venthole is set close to second air admission hole, first venthole
The distance between section where the section at place and second venthole is less than the sliding block along the axial of the axle sleeve
Length.
In one of the embodiments, first venthole and second venthole be it is multiple, multiple described first
Venthole is located on same section, and multiple second ventholes are located on same section.
In one of the embodiments, first venthole and the section where second venthole and the fixation
Ultimate range between the top surface of the small head end of axle is more than axial length of the sliding block along the axle sleeve.
In one of the embodiments, in addition to sealing ring, the sealing ring is sheathed on the two ends of the sliding block, described close
Seal and the madial wall of the axle sleeve are tightly connected.
In one of the embodiments, in addition to two fixtures, two fixtures are respectively arranged on the axle sleeve
Two ends, the stub end of the fixing axle is provided with projection, and the fixture is towards opening up fluted on the side wall of the opening, institute
State projection to be contained in the groove, the fixture is fixedly connected with the fixing axle.
In one of the embodiments, the acoustical generator includes：
Housing, offers host cavity, and the bottom wall of the housing offers through hole；
The sounding shell fragment in the host cavity is contained in, one end of the sounding shell fragment is fixed at the bottom wall of the housing
On, and the sounding shell fragment is oppositely arranged with the through hole；
Sponge is filtered, is contained in the host cavity；
Buffer spring, is connected between the filtering sponge and the bottom wall of the housing；
Vapour lock, on the filtering sponge, the vapour lock is connected with the venthole, the venthole outlet, institute
State gas to discharge from the venthole, into the vapour lock, make the sounding shell fragment vibration sounding.
In one of the embodiments, the outside mask of the housing is provided with protective cover, the protective cover and offers out sound
Hole, the sender is oppositely arranged with the through hole.
A kind of gas differential pressure warning system, including above-mentioned gas pressure difference alarm and body, the body offer cavity,
The gas differential pressure alarm is contained in the cavity, and the gas enters the cavity, enters the gas from the cavity
In body pressure difference alarm.
The sliding block of above-mentioned gas pressure difference alarm, which is slided, to open venthole, venthole outlet, acoustical generator sounding alarm.
The air pressure of first air cavity or second air cavity can be adjusted by exhaust, if the air pressure pressure of the first air cavity and the second air cavity
Difference exceedes design load, then sliding block offsets a side, and venthole has air-flow to come out, at this moment generator sounding；When the first air cavity and second
When the differential pressure of atmospheric pressure of air cavity is recovered in the range of design load, then sliding block return movement, when sliding block shelters from venthole, acoustical generator stops
Only alarm.Above-mentioned gas pressure difference alarm is realized alarm by the mechanical movement of sliding block and cancels alarm, therefore gas pressure
Difference alarming device uses mechanical alarm, and cost of manufacture is relatively low, and mechanical process is relative to the condition that electric signal is alarmed to environment
It is required that relatively low.
Brief description of the drawings
Fig. 1 is the phantom of the gas differential pressure warning system of present embodiment；
Fig. 2 is the stereogram of the axle sleeve of the gas differential pressure warning system shown in Fig. 1；
Fig. 3 is another part sectional view of the gas differential pressure warning system of present embodiment.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the better embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make to understand more the disclosure
Plus it is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " including one or more
The arbitrary and all combination of related Listed Items.
Referring to Fig. 1, the gas differential pressure warning system 10 of present embodiment includes real gas differential pressure alarm (figure is not marked)
And body 200.Body 200 offers cavity (figure is not marked).Real gas differential pressure alarm is contained in cavity.Body 200 is opened up
Have into gas passage, gas enters cavity from gas passage is entered, enter from cavity in real gas differential pressure alarm.
Fig. 1 and Fig. 3 are referred to, real gas differential pressure alarm includes axle sleeve 110, sliding block 120, sealing ring 130, two fixations
Axle 140, two fixtures 150, compression elastic piece 160 and acoustical generator 170.
Axle sleeve 110 is contained in cavity.The two ends of axle sleeve 110 are provided with opening.Offered on the side wall of one end of axle sleeve 110
The second air admission hole 112 is offered on first air admission hole 111, the side wall of the other end.110 the first air admission holes 111 and second of axle sleeve
Venthole 113 is offered on side wall between air admission hole 112.
Specifically in the present embodiment, the first air admission hole 111 and the second air admission hole 112 are multiple.Multiple first air admission holes
111 are located on same section, and multiple second air admission holes 112 are located on same section.Multiple first air admission holes 111 are uniform, circular
Set.Multiple second air admission holes 112 are uniform, surround setting.Multiple first air admission holes 111 and multiple second air admission holes 112 can be with
Allow gas to enough uniformly enter in axle sleeve 110.
It is appreciated that the first air admission hole 111 and the second air admission hole 112 can also be one.
Referring to Fig. 2, venthole 113 includes the first venthole 113a and the second venthole 113b.First venthole 113a
Set close to the first air admission hole 111, the second venthole 113b is set close to the second air admission hole 112.Specifically in the present embodiment,
The distance between section where section and the second venthole 113b where first venthole 113a is less than sliding block 120 along axle sleeve
110 axial length.Then sliding block 120 can at least shelter from one in the first venthole 113a or the second venthole 113b
It is individual, prevent the first venthole 113a and the second venthole 113b to be vented simultaneously, influence the using effect of gas differential pressure alarm.
First venthole 113a and the second venthole 113b is multiple.Multiple first venthole 113a are located at same section
On, multiple second venthole 113b are located on same section.Multiple first venthole 113a are uniform, surround setting.Multiple second
Venthole 113b is uniform, surround setting.
Sliding block 120 is contained in axle sleeve 110.The madial wall of the lateral wall of sliding block 120 and axle sleeve 110 is tightly connected.Sliding block
120 along axle sleeve 110 slidably, and sliding block 120 it is salable or open venthole.The two ends of the lateral wall of sliding block 120 offer receipts
Tank (figure is not marked), the lateral wall of the circular sliding block 120 of accepting groove one week.
Axle sleeve 110 is divided into the first air cavity 193 and the second air cavity 194 by sliding block 120.
Sealing ring 130 includes the first sealing ring 131, the second sealing ring 132 and the 3rd sealing ring 133.First sealing ring 131
The two ends of sliding block 120 are sheathed on, the madial wall of the first sealing ring 131 and axle sleeve 110 is tightly connected.Specifically in present embodiment
In, the first sealing ring 131 is contained in accepting groove, and anti-limited slip block 120 is in sliding process, the position hair of the first sealing ring 131
Raw movement.
Two fixing axles 140 fix the two ends for being contained in axle sleeve 110 respectively.Fixing axle 140 includes stub end 141 and microcephaly
End 142.The opening of the sealing axle sleeve 110 of stub end 141.The stub end 141 of fixing axle 140 is provided with projection 143.
Specifically in the present embodiment, two fixtures 150 are respectively arranged on the two ends of axle sleeve 110.Fixture 150 seals sky
The two ends of chamber.Fixture 150 is towards opening up fluted 151 on the side wall of opening.Projection 143 is contained in groove 151.It is fixed
Part 150 is fixedly connected with fixing axle 140.The second sealing ring 132, the second sealing ring 132 and cavity are arranged with fixture 150
Madial wall is tightly connected.Two the 3rd sealing rings 133 are arranged with axle sleeve 110.Two the 3rd sealing rings 133 are located at first respectively
Between air admission hole 111 and venthole 131 and between the second air admission hole 112 and venthole.3rd sealing ring 133 make axle sleeve 110 with
The madial wall of cavity is fixedly connected.It is then close in the lateral wall of axle sleeve 110 and madial wall, the second sealing ring 132 and the 3rd of cavity
First is formed between seal 133 to enter air cavity 191 and second enter air cavity 192.Then gas enters this from the external world by entering gas passage
First enters air cavity 191 and second enters in air cavity 192, and first is had respectively entered by the first air admission hole 111 or the second air admission hole 112
The air cavity 194 of air cavity 193 or second.Because the first air admission hole 111 is uniformly distributed in a ring with the second air admission hole 112, then it can make
Gas can be uniformly entered into the first air cavity 193 or the second air cavity 194.Prevent gas from entering out of an air admission hole, it is right
Sliding block 120 produces percussion, influences the test result of gas differential pressure alarm.
Equally, it is formed between the lateral wall of axle sleeve 110 and the madial wall in space and between two the 3rd sealing rings 133
Outlet chamber 195.Venthole 113 is connected with outlet chamber 195.Gas first can be discharged in outlet chamber 195 by venthole 113, be then exhausted from
Alarmed.
Ultimate range between the top surface of the small head end 142 in section and fixing axle 140 where the first venthole 113a is big
In axial length of the sliding block 120 along axle sleeve 110.Also, the section where the second venthole 113b and the microcephaly of fixing axle 140
Ultimate range between the top surface at end 142 is more than axial length of the sliding block 120 along axle sleeve 110.It can then ensure that sliding block 120 exists
Slided between the small head end 142 of two fixing axles 140, sliding block 120 can make the first venthole 113a or the second venthole 113b
Open, can outwards be vented, to adjust the air pressure size of the first air cavity 193 and the second air cavity 194.
Two compression elastic pieces 160 are sheathed on two small head end 142 respectively.Compression elastic piece 160 is connected to sliding block 120
Between stub end 141.The two ends of compression elastic piece 160 side respectively with sliding block 120, stub end 141 are abutted against.First gas
When the pressure of the air cavity 194 of chamber 193 and second is inconsistent, sliding block 120 is slided along axle sleeve 110.Sliding block 120 is slided, then sliding block
The compression elastic piece 160 of 120 compression sides, the compression elastic piece 160 of opposite side extends.It is appreciated that compression elastic piece 160 can
Think compression spring or elasticity of compression rubber tube etc..
Acoustical generator 170 is contained in inside body 200.Outlet pipe 211 is offered inside body 200, acoustical generator 170 passes through
Outlet pipe 211 is turned on outlet chamber 195.Specifically in the present embodiment, the middle part of acoustical generator 170 and outlet pipe 211 connects
It is logical.The other end of outlet pipe 211 is pressure relief opening 213.Acoustical generator 170 is at venthole 113.The outlet of venthole 113, sounding
Device 170 can sounding.Specifically in the present embodiment, gas enters outlet chamber 195 from venthole 113.Outlet chamber 195 and sounding
Device 170 is connected, and gas is entered in acoustical generator 170.
Referring to Fig. 3, specifically in the present embodiment, acoustical generator 170 includes housing 171, sounding shell fragment 172, mistake
Filter sponge 173, buffer spring 174, vapour lock 175, protective cover 176.
Housing 171 offers host cavity 171a, and the bottom wall of housing 171 offers through hole 171b.
Sounding shell fragment 172 is contained in host cavity.One end of sounding shell fragment 172 is fixed on the bottom wall of housing 171, and
Sounding shell fragment 172 is oppositely arranged with through hole.
Filtering sponge 173 is contained in host cavity.The voidage of filtering sponge 173 can be up to 97%, with excellent
Gas permeability, good flexibility and higher mechanical strength.
Buffer spring 174 is connected between filtering sponge 173 and the bottom wall of housing 171.Buffer spring 174 can prevent gas
Press through greatly, filtering sponge 173 is stamped into the bottom of housing 171, be expressed to sounding shell fragment 172, influence sounding shell fragment 172 vibrates
Sounding.
Specifically in the present embodiment, buffer spring 174 is volute spring.
Vapour lock 175 is on filtering sponge 173.Vapour lock 175 is connected with venthole 113, the outlet of venthole 113.Gas
Discharged from venthole 113, into vapour lock 175, make the vibration sounding of sounding shell fragment 172.
Specifically in the present embodiment, vapour lock 175 is turned on outlet chamber 195, then gas is discharged from venthole, from outlet chamber
Discharge, entered back into vapour lock 175 in 195.
Pressure relief opening can discharge the gas for not making not timely enter in vapour lock 175, so that the gas of outlet chamber 195
Pressure energy is enough balanced in time.
It is appreciated that in other embodiments, vapour lock 175 can be connected by communicating pipe with venthole, communicating pipe
One end is pressure relief opening.
Protective cover 176 is located at the outside of housing 171.Sender (not shown) is offered on protective cover 176.Sender is with leading to
Hole is oppositely arranged.Protective cover 176 plays a part of protection to housing 171 and sounding shell fragment 172.
It is appreciated that in other embodiments, body 200 can be omitted.Real gas differential pressure alarm can directly lead to
Cross air inlet pipe gas is input in the first air cavity 193 and the second air cavity 194.Also, outlet chamber is directly connected by escape pipe
195 with acoustical generator 170.
If the differential pressure of atmospheric pressure of the first air cavity 193 and the second air cavity 194 exceedes design load, sliding block 120 offsets a side, outlet
Hole 113 has air-flow to come out, at this moment the sounding of generator 170；When the differential pressure of atmospheric pressure of the first air cavity 193 and the second air cavity 194 recovers
When in the range of design load, then sliding block 120 returns and blocks venthole 113, the stop alarm of acoustical generator 170.It is appreciated that design load can
To require to set different values according to different gas pressure intensity alarms.Design load can by compression elastic piece 160 elasticity be
Number or deformation quantity are set.
It is described in detail with reference to concrete condition：
When the pressure in the first air cavity 193 is more than the pressure in the second air cavity 194, the disequilibrium of sliding block 120 is sliding
Block 120 is slided along axle sleeve 110.When one end of sliding block 120 slips over the first venthole 113a, then in the first air cavity 193
Gas can be discharged out of first venthole 113a.Gas is entered in outlet chamber 195.Gas is entered out by outlet chamber 195
Feed channel 211.So as to which gas is entered in acoustical generator 170, the sounding of acoustical generator 170 can alarm non-equilibrium state.The
Pressure in one air cavity 193 is reduced by being vented, then sliding block 120 can be moved with the pressure size of both sides, and elastic component recovers.Work as cunning
When block 120 back moves to the first venthole 113a, sliding block 120 can shelter from the first venthole 113a.Then the first outlet
Hole 113a can stop exhaust, the stop alarm of acoustical generator 170.
Similarly, when the pressure in the second air cavity 194 is more than the pressure in the first air cavity 193, sliding block 120 loses flat
Weighing apparatus, sliding block 120 is slided along axle sleeve 110.When one end of sliding block 120 slips over the second venthole 113b, then the second air cavity 194
Interior gas can be discharged out of second venthole 113b.Gas is entered in outlet chamber 195.Gas is entered by outlet chamber 195
To outlet pipe 211.So as to which gas is entered in acoustical generator 170, the sounding of acoustical generator 170 can be reported to non-equilibrium state
It is alert.Pressure in second air cavity 194 is reduced by being vented, then sliding block 120 can be moved with the pressure size of both sides, and elastic component is extensive
It is multiple.When sliding block 120 back moves to the second venthole 113b, sliding block 120 can shelter from the second venthole 113b.Then
Two venthole 113b can stop exhaust, the stop alarm of acoustical generator 170.
Above-mentioned real gas differential pressure alarm, if the differential pressure of atmospheric pressure of the first air cavity 193 and the second air cavity 194 exceedes design load,
Then sliding block 120 offsets a side, and venthole 113 has air-flow to come out, at this moment the sounding of generator 170；When the first air cavity 193 and the second gas
When the differential pressure of atmospheric pressure of chamber 194 is recovered in the range of design load, then sliding block 120 returns and blocks venthole 113, and acoustical generator 170 stops
Alarm.Above-mentioned real gas differential pressure alarm is realized alarm by the mechanical movement of sliding block 120 and cancels alarm, therefore machinery
Process is alarmed relative to electric signal and requires relatively low to the condition of environment, and real gas differential pressure alarm uses mechanical alarm,
Cost of manufacture is relatively low.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of gas differential pressure alarm, it is characterised in that including：
Offer and opened up on the first air admission hole, the side wall of the other end on the axle sleeve of both ends open, the side wall of one end of the axle sleeve
Have and offer venthole on the second air admission hole, the side wall between first air admission hole and second air admission hole；
Sliding block, is contained in the axle sleeve, and the madial wall of the lateral wall of the sliding block and the axle sleeve is tightly connected, the sliding block
Along the axle sleeve slidably, so that the sliding block seals or opened the venthole；
Two fixing axles, fix the two ends for being contained in the axle sleeve, the fixing axle includes stub end and small head end, described respectively
Stub end seals the opening of the axle sleeve, and the axle sleeve is divided into the first air cavity and the second air cavity by the sliding block；
Two compression elastic pieces, are sheathed on two small head ends respectively, the compression elastic piece be connected to the sliding block with
Between the stub end；And
Acoustical generator, at the venthole, the venthole outlet, so that the acoustical generator sounding；
Wherein, the sliding block, which is slided, can be opened the venthole, the venthole outlet, and the acoustical generator sounding alarm is adjusted
The air pressure of first air cavity or second air cavity is saved, the sliding block, which is returned, blocks the venthole, and the acoustical generator stops
Alarm.
2. gas differential pressure alarm according to claim 1, it is characterised in that first air admission hole and described second enter
Stomata is multiple, and multiple first air admission holes are located on same section, and multiple second air admission holes are located on same section.
3. gas differential pressure alarm according to claim 1, it is characterised in that the venthole include the first venthole and
Second venthole, first venthole is set close to first air admission hole, and second venthole enters close to described second
Stomata is set, and the distance between section where section and second venthole where first venthole is less than described
Axial length of the sliding block along the axle sleeve.
4. gas differential pressure alarm according to claim 3, it is characterised in that first venthole and described second go out
Stomata is multiple, and multiple first ventholes are located on same section, and multiple second ventholes are located on same section.
5. gas differential pressure alarm according to claim 4, it is characterised in that first venthole and described second go out
Ultimate range between the top surface of the small head end in section and the fixing axle where stomata is more than the sliding block along the axle sleeve
Axial length.
6. gas differential pressure alarm according to claim 1, it is characterised in that also including sealing ring, the sealing snare
Located at the two ends of the sliding block, the madial wall of the sealing ring and the axle sleeve is tightly connected.
7. gas differential pressure alarm according to claim 1, it is characterised in that also including two fixtures, described in two
Fixture is respectively arranged on the two ends of the axle sleeve, and the stub end of the fixing axle is provided with projection, and the fixture is opened described in
Open up fluted on the side wall of mouth, the projection is contained in the groove, the fixture is fixed with the fixing axle to be connected
Connect.
8. gas differential pressure alarm according to claim 1, it is characterised in that the acoustical generator includes：
Housing, offers host cavity, and the bottom wall of the housing offers through hole；
The sounding shell fragment in the host cavity is contained in, one end of the sounding shell fragment is fixed on the bottom wall of the housing,
And the sounding shell fragment is oppositely arranged with the through hole；
Sponge is filtered, is contained in the host cavity；
Buffer spring, is connected between the filtering sponge and the bottom wall of the housing；
Vapour lock, on the filtering sponge, the vapour lock is connected with the venthole, the venthole outlet, the gas
Body is discharged from the venthole, into the vapour lock, makes the sounding shell fragment vibration sounding.
9. gas differential pressure alarm according to claim 8, it is characterised in that the outside mask of the housing is provided with protection
Sender is offered on cover, the protective cover, the sender is oppositely arranged with the through hole.
10. a kind of gas differential pressure warning system, it is characterised in that including gas differential pressure report described in claim 1~9 any one
Alert device and body, the body offer cavity, and the gas differential pressure alarm is contained in the cavity, and the gas enters
The cavity, enters in the gas differential pressure alarm from the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172601.0A CN105023397B (en) | 2014-04-25 | 2014-04-25 | Gas differential pressure warning system and its gas differential pressure alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172601.0A CN105023397B (en) | 2014-04-25 | 2014-04-25 | Gas differential pressure warning system and its gas differential pressure alarm |
Publications (2)
| Publication Number | Publication Date |
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| CN105023397A CN105023397A (en) | 2015-11-04 |
| CN105023397B true CN105023397B (en) | 2017-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410172601.0A Active CN105023397B (en) | 2014-04-25 | 2014-04-25 | Gas differential pressure warning system and its gas differential pressure alarm |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110145388B (en) * | 2019-06-10 | 2021-08-24 | 台州三元车辆净化器有限公司 | Three-way catalytic converter |
| CN110629633B (en) * | 2019-08-27 | 2021-07-06 | 中国建筑第二工程局有限公司 | Strip-shaped direction guide brick |
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| CN1374136A (en) * | 2002-04-11 | 2002-10-16 | 山西虹安科技有限公司 | Pneuamtic device for positive pressure oxygen respirator |
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| CN102895728A (en) * | 2012-10-27 | 2013-01-30 | 河南辉瑞生物医电技术有限公司 | Differential pressure type pneumatic valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3563139B2 (en) * | 1995-01-17 | 2004-09-08 | ニッケイ株式会社 | Outgassing prevention device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374136A (en) * | 2002-04-11 | 2002-10-16 | 山西虹安科技有限公司 | Pneuamtic device for positive pressure oxygen respirator |
| CN201297413Y (en) * | 2008-11-17 | 2009-08-26 | 北京谊安医疗系统股份有限公司 | Air control valve and alarm system provided therewith |
| CN201434747Y (en) * | 2009-03-23 | 2010-03-31 | 王中 | Pneumatic low-pressure alarming device |
| CN102114306A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | Gas pressure alarm device |
| CN201719719U (en) * | 2010-07-02 | 2011-01-26 | 无锡市新消宝安全科技有限公司 | Air supply valve of positive-pressure air breathing device |
| CN102895728A (en) * | 2012-10-27 | 2013-01-30 | 河南辉瑞生物医电技术有限公司 | Differential pressure type pneumatic valve |
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|---|---|
| CN105023397A (en) | 2015-11-04 |
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