CN205898356U - A pressure sensor for relief pressure valve - Google Patents
A pressure sensor for relief pressure valve Download PDFInfo
- Publication number
- CN205898356U CN205898356U CN201620657730.3U CN201620657730U CN205898356U CN 205898356 U CN205898356 U CN 205898356U CN 201620657730 U CN201620657730 U CN 201620657730U CN 205898356 U CN205898356 U CN 205898356U
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- China
- Prior art keywords
- pressure transducer
- relief valve
- piezoelectric element
- air relief
- connecting portion
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Abstract
The utility model provides a pressure sensor for relief pressure valve, characterized by: pressure sensor installs the air inlet at the relief pressure valve, pressure sensor in, the upper end of casing is equipped with the portion of inserting that connects, the lower extreme is equipped with connecting portion, is equipped with towards the inlet port of casing inner chamber at connecting portion, is equipped with the power that passes piece in the casing, the edge that passes the power piece connects with the restraint symphysis, passes the power piece and separates the casing inner chamber with the restraint membrane and be two cavities, the one side that the inlet port was kept away from to the power piece of biography is equipped with the dowel steel, and the dowel steel is connected with piezoelectric element, and piezoelectric element's edge supports at the supporting part. Through adopting above structure, the part volume dwindles by a wide margin, and the pressure sensor volume only is the about 23% of former CNG manometer, and weight is 35g only, and space occupancy descends, and component arrangement scope and arrangement form are more nimble, adopts piezoelectric element as the measurement component, and the precision is high, and measuring range is wide, linear and stability height, and dynamic characteristic is good.
Description
Technical field
This utility model is related to the field of components of air relief valve, particularly a kind of pressure transducer for air relief valve.
Background technology
Cng (compressed natural gas), as a kind of gaseous fuel, mixes evenly with air, and burning is more abundant, discharge
The harmful substance such as co, hc less；There is no carbon deposit after combustion of natural gas, engine scuffing can be reduced, maintaining expense is low；
Natural gas engine repacking is simple, particularly uses the dual fuel engine of gasoline engine refitting, because cost performance is high, using extensive；
Therefore new-energy automobile is used compressed natural gas cng to be suitable for current environmental requirement as fuel at present.
With the fast development of gas-fueled vehicles, on market, natural gas automobile pollution increases year by year.And adopt cng(to press
Contracting natural gas) system also accordingly increase.In cng gas control system, air relief valve belongs to core component, and steel cylinder compresses
The natural gas cng gas of 20mpa, before entering Motor Engine Cylinder burning, needs to implement gasification in air relief valve and subtracts
Pressure.In use, need to monitor the input pressure of air relief valve, to be prompted to steel cylinder aerating, or avoid the occurrence of gas and let out
Leakage.What existing detection means adopted mostly is pressure gauge, there is problems that volume is larger, has more mechanical part, holds
Easily break down, and certainty of measurement is not high, the response time is also longer.Automotive multipurpose due to reequiping cng uses in operation, drives
Environment rather harsh, therefore proposes very high requirement to the reliability of parts, some gas pressure sensors existing by
In the impact being vulnerable to environment, thus being unsuitable for in air relief valve.
Content of the invention
Technical problem to be solved in the utility model is to provide a kind of pressure transducer for air relief valve, can reduce
The space that part takies, is easily installed, and reliability is high, and certainty of measurement is high, is swift in response.
For solving above-mentioned technical problem, this utility model be the technical scheme is that a kind of pressure for air relief valve
Sensor, is characterized in that: pressure transducer is arranged on the air inlet of air relief valve；
In described pressure transducer, the upper end of housing is provided with Plug Division, and lower end is provided with connecting portion, is provided with logical in connecting portion
Toward the air inlet of housing cavity, it is provided with force-transmitting block in housing, the edge of force-transmitting block is connected with constraint film, force-transmitting block and constrain film
Housing cavity is divided into two chambers；
Force-transmitting block is provided with dowel steel away from the one side of air inlet, and dowel steel is connected with piezoelectric element, the edge of piezoelectric element
It is supported on supporting part.
Preferably in scheme, described supporting part is installed in inner walls.
Preferably in scheme, described piezoelectric element is electrically connected with process circuit, and process circuit is electrically connected with plug.
Preferably in scheme, described Plug Division is provided with the open blind hole in a upper end, and plug is located in the blind hole of Plug Division.
Preferably in scheme, the outer rim in Plug Division is provided with mousing-hook.
Preferably in scheme, the outer wall of connecting portion is provided with external screw thread.
Preferably in scheme, the outer wall of connecting portion is additionally provided with sealing ring.
A kind of pressure transducer for air relief valve that this utility model provides, by using above structure, pressure passes
The volume of part of sensor significantly reduces, and pressure transducer volume is only former cng manometric about 23%, weight only 35g, and space accounts for
There is rate to decline, arrangement of parts scope and arrangement are more flexible, using piezoelectric element as measurement part, high precision, measure model
Enclose width, linear and stability is high, and dynamic characteristic is good.Structure of the present utility model can directly replace existing cng pressure gauge, no
Need to restructure, install very convenient.And pressure transducer of the present utility model is no longer provided separately pressure simulation signal, measurement
Numerical value is more accurate, and the response time is fast.
Brief description
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 is front view of the present utility model.
Fig. 2 is cross-sectional schematic of the present utility model.
Fig. 3 is integral installation structural representation of the present utility model.
In figure: pressure transducer 1, housing 101, clamping part 102, connecting portion 103, external screw thread 104, sealing ring 105, patch
Portion 106, mousing-hook 107, plug 108, air inlet 109, force-transmitting block 110, constraint film 111, dowel steel 112, piezoelectric element 113,
Supporting part 114, process circuit 115, air relief valve 2.
Specific embodiment
In Fig. 1 ~ 3, a kind of pressure transducer for air relief valve, it is characterized in that: pressure transducer 1 is arranged on air relief valve
2 air inlet；
In described pressure transducer 1, the upper end of housing 101 is provided with Plug Division 106, and lower end is provided with connecting portion 103, even
Socket part 103 is provided with the air inlet 109 towards housing 101 inner chamber, is provided with force-transmitting block 110, the side of force-transmitting block 110 in housing 101
Edge is connected with constraint film 111, and housing 101 inner chamber is divided into two chambers with constraint film 111 by force-transmitting block 110；
Force-transmitting block 110 is provided with dowel steel 112 away from the one side of air inlet 109, and dowel steel 112 is connected with piezoelectric element 113,
The edge supports of piezoelectric element 113 are in supporting part 114.Piezoelectric element 113 in this example preferably employs quartz crystal as piezoelectricity
Element.Different from prior art, adopting bellows to collect pressure change pressure transducer of the prior art more, but bellows
Deformation component can affect the change of gas pressure, make measurement inaccurate, in the application, adopt force-transmitting block 110 fiting constraint film
111 structure, the surface area due to constraining film 111 is less, and the impact for gas pressure is less to measure essence such that it is able to improve
Degree, when pressed gas enter into the within the chamber connecting with air inlet 109, in such as Fig. 2, force-transmitting block 110 is up, by dowel steel
112 by pressure conduction to piezoelectric element 113, make piezoelectric element flexural deformation, thus the surface of piezoelectric element produce enough
Electric charge, to measure the change of pressure.
Preferably in scheme such as Fig. 2, described supporting part 114 is installed in housing 101 inwall.
Preferably in scheme such as Fig. 2, described piezoelectric element 113 electrically connects with process circuit 115, process circuit 115 and
Plug 108 electrically connects.By this structure, the electric charge that pressure change is produced is converted into digital signal output through amplifying with a-d.Phase
The process circuit 115 closing is prior art, and here is omitted.
Preferably in scheme such as Fig. 2, described Plug Division 106 is provided with the open blind hole in a upper end, and plug 108 is located at and patches
In the blind hole in portion 106.By this structure, it is easy to and control device, the main control computer of such as vehicle connects.
Preferably in scheme such as Fig. 1, the outer rim in Plug Division 106 is provided with mousing-hook 107.By this structure, it can be avoided that connecing
Interpolating unit 106 and union joint come off in the process of moving.
Preferably in scheme such as Fig. 1, the outer wall of connecting portion 103 is provided with external screw thread.Preferably in scheme, connecting portion 103
Outer wall is additionally provided with sealing ring 105.By this structure, it is easy to connection and the sealing of pressure transducer and air relief valve.The chi of connecting portion 103
Very little preferably identical with existing manometric size for connection, thus the mould of air relief valve need not be changed, you can directly change pressure and pass
Sensor.Also can directly existing using manometric air relief valve on directly changed, reduce customer using cost.
The above embodiments are only optimal technical scheme of the present utility model, and are not construed as limit of the present utility model
System, the technical scheme that protection domain of the present utility model should be recorded with claim, the technical scheme recorded including claim
The equivalents of middle technical characteristic are protection domain.I.e. equivalent within this range is improved, also in this utility model
Protection domain within.
Claims (7)
1. a kind of pressure transducer for air relief valve, is characterized in that: pressure transducer (1) is arranged on the air inlet of air relief valve (2)
Mouthful；
In described pressure transducer (1), the upper end of housing (101) is provided with Plug Division (106), and lower end is provided with connecting portion (103),
It is provided with the air inlet (109) towards housing (101) inner chamber in connecting portion (103), be provided with force-transmitting block (110) in housing (101),
The edge of force-transmitting block (110) is connected with constraint film (111), and housing (101) inner chamber is divided by force-transmitting block (110) with constraint film (111)
It is divided into two chambers；
Force-transmitting block (110) is provided with dowel steel (112), dowel steel (112) and piezoelectric element away from the one side of air inlet (109)
(113) connect, the edge supports of piezoelectric element (113) are in supporting part (114).
2. a kind of pressure transducer for air relief valve according to claim 1, is characterized in that: described supporting part
(114) it is installed in housing (101) inwall.
3. a kind of pressure transducer for air relief valve according to claim 1, is characterized in that: described piezoelectric element
(113) electrically connect with process circuit (115), process circuit (115) is electrically connected with plug (108).
4. a kind of pressure transducer for air relief valve according to claim 3, is characterized in that: described Plug Division
(106) it is provided with the open blind hole in a upper end, plug (108) is located in the blind hole of Plug Division (106).
5. a kind of pressure transducer for air relief valve according to claim 1, is characterized in that: in Plug Division (106)
Outer rim is provided with mousing-hook (107).
6. a kind of pressure transducer for air relief valve according to claim 1, is characterized in that: outside connecting portion (103)
Wall is provided with external screw thread.
7. a kind of pressure transducer for air relief valve according to claim 1, is characterized in that: outside connecting portion (103)
Wall is additionally provided with sealing ring (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620657730.3U CN205898356U (en) | 2016-06-29 | 2016-06-29 | A pressure sensor for relief pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620657730.3U CN205898356U (en) | 2016-06-29 | 2016-06-29 | A pressure sensor for relief pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205898356U true CN205898356U (en) | 2017-01-18 |
Family
ID=57770000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620657730.3U Active CN205898356U (en) | 2016-06-29 | 2016-06-29 | A pressure sensor for relief pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205898356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110313041A (en) * | 2017-02-08 | 2019-10-08 | 株式会社自动网络技术研究所 | Reactor |
-
2016
- 2016-06-29 CN CN201620657730.3U patent/CN205898356U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110313041A (en) * | 2017-02-08 | 2019-10-08 | 株式会社自动网络技术研究所 | Reactor |
| CN110313041B (en) * | 2017-02-08 | 2021-04-20 | 株式会社自动网络技术研究所 | Electric reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220623 Address after: 430043 No. 8 Qingshui Road, Jinyinhu street, Dongxihu District, Wuhan City, Hubei Province Patentee after: WUHAN LINGDIAN AUTOMOBILE ELECTRIC CONTROL SYSTEM CO.,LTD. Address before: 430000 F3, building 2, weidesheng Industrial Park, No. 15, Fenghuang Road, Fenghuangshan Development Zone, Caidian District, Wuhan City, Hubei Province Patentee before: WUHAN HONG SI DE AUTOMOTIVE Co.,Ltd. |