CN104101460A - Housing of pressure difference sensor - Google Patents
Housing of pressure difference sensor Download PDFInfo
- Publication number
- CN104101460A CN104101460A CN201410348531.XA CN201410348531A CN104101460A CN 104101460 A CN104101460 A CN 104101460A CN 201410348531 A CN201410348531 A CN 201410348531A CN 104101460 A CN104101460 A CN 104101460A
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- CN
- China
- Prior art keywords
- sensor
- draft tube
- pressure difference
- housing
- intake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pressure difference sensor. The pressure difference sensor comprises a housing with an installation-location hole, wherein cavities communicated with two intake tubes respectively are formed in the housing, the two cavities are isolated through a PCB, a sensitive device is arranged on the PCB, and an air vent is formed in the middle of the sensitive device; the two intake tubes are arranged to incline towards the outer sides, and mutually form a 20-degree included angle. According to the pressure difference sensor disclosed by the invention, due to the mode that the two intake tubes are arranged to incline towards the outer sides, and mutually form a 20-degree included angle, on one hand, the distance between the roots of the two intake tubes can be reduced, thus shortening the total length of the sensor; on the other hand, because each intake tube and the vertical line of the end surface of the sensor housing form a 10-degree included angle, the contact area of the root of the intake tube, and the sensor is obviously increased compared with that in vertical arrangement, therefore, the bending strength of the intake tube is also obviously reinforced.
Description
Technical field
The present invention relates to sensor technical field, particularly a kind of shell of the sensor for measurement gas pressure.
Background technology
Differential pressure pickup is a kind of sensor that is used for measuring difference between two pressure, is generally used for measuring the pressure reduction of a certain equipment or parts rear and front end.Differential pressure pickup comprises shell, is provided with the cavity being communicated with two draft tube respectively in shell, between two cavitys, by PCB circuit boards, on PCB circuit board, is provided with position-sensing unit, and there is air hole centre, for responding to the draught head between two cavitys.The displacement that position-sensing unit produces is directly proportional to air pressure, thereby the resistance value in sensor circuit is changed, electronic circuit detects this change in voltage, and the canonical measure signal of a corresponding pressure of conversion output is transferred in ECU, ECU compare analyzing, processing and output.
Two draft tube of current differential pressure pickup are to be parallel to each other and perpendicular to sensor surface mostly, plug tracheae when installing convenient, distance between two snorkels is often larger, therefore the length of sensor is longer, the diameter of two other draft tube is less, just less with the connection area of sensor, in the time bearing larger moment of flexure,, aspect reliability, there is hidden danger in two often easily fractures of draft tube.
Summary of the invention
The object of the invention is the strength of joint in order to increase by two draft tube and sensor, make it be not easy fracture, and shorten the length dimension of sensor, be convenient to the installation of sensor at engine interior.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of differential pressure pickup, comprises the shell with mounting-positioning holes, is provided with the cavity being communicated with two draft tube respectively in shell, between two cavitys, by PCB circuit boards, on PCB circuit board, is provided with position-sensing unit, and there is air hole centre; Two draft tube are set to respectively tilt laterally, and become each other 20 ° of angles.
Beneficial effect: two draft tube of the present invention are set to tilt laterally, and become each other the mode of 20 ° of angles, can reduce two distances between draft tube root on the one hand, thereby shortens the total length of sensor; On the other hand, because every draft tube becomes 10 ° of angles with the vertical line of sensor outer housing end face, therefore obviously increase when more vertical setting of contact area of draft tube root and sensor, therefore the bending strength of draft tube also obviously strengthens.
Brief description of the drawings
Fig. 1 is the differential pressure pickup structural representation before improving;
Fig. 2 is the structural representation of the differential pressure pickup after improving;
Fig. 3 is the upward view of Fig. 2, and cuts open along mounting-positioning holes 1.
In figure: 1-mounting-positioning holes, 2-cavity, 3-draft tube, 4-shell, 5-position-sensing unit, 6-PCB circuit board, 7-air hole.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 1 the differential pressure pickup structural representation of the shell 4 before improvement, and in conjunction with shown in Fig. 3, a kind of differential pressure pickup, comprise the shell 4 with mounting-positioning holes 1, in shell 4, be provided with between cavity 2, two cavitys 2 that are communicated with two draft tube 3 respectively and isolate by PCB circuit board 6, on PCB circuit board 6, be provided with position-sensing unit 5, it is to be parallel to each other and perpendicular to sensor surface that there are 7, two draft tube 3 of air hole centre.Fig. 2 is the differential pressure pickup of the shell 4 after improving, and two draft tube 3 is changed to two draft tube 3 by be arrangeding in parallel before improving and tilt laterally respectively, and become each other 20 ° of angles.
Because of the differential pressure pickup before improving, two draft tube 3 are to be parallel to each other and perpendicular to sensor surface, plug tracheae when installing convenient, distance between two snorkels is often larger, and therefore the length of sensor is longer, and the diameter of two other draft tube is less, just less with the connection area of sensor, in the time bearing larger moment of flexure,, there is hidden danger in two often easily fractures of draft tube aspect reliability.Shell 4 after improvement, two draft tube are set to tilt laterally, and become each other the mode of 20 ° of angles, can reduce two distances between draft tube root on the one hand, thereby shorten the total length of sensor, be convenient to the installation of sensor at engine interior; On the other hand, because every draft tube becomes 10 ° of angles with the vertical line of sensor outer housing end face, therefore obviously increase when more vertical setting of contact area of draft tube root and sensor, therefore the bending strength of draft tube also obviously strengthens.
Claims (1)
1. a differential pressure pickup shell, comprise the shell (4) of band mounting-positioning holes (1), in shell (4), be provided with the cavity (2) being communicated with two draft tube (3) respectively, between two cavitys (2), isolate by PCB circuit board (6), on PCB circuit board (6), be provided with position-sensing unit (5), there is air hole (7) centre; It is characterized in that: described two draft tube (3) are set to respectively tilt laterally, and become each other 20 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348531.XA CN104101460A (en) | 2014-07-21 | 2014-07-21 | Housing of pressure difference sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348531.XA CN104101460A (en) | 2014-07-21 | 2014-07-21 | Housing of pressure difference sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104101460A true CN104101460A (en) | 2014-10-15 |
Family
ID=51669791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410348531.XA Pending CN104101460A (en) | 2014-07-21 | 2014-07-21 | Housing of pressure difference sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104101460A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535792Y (en) * | 2002-05-24 | 2003-02-12 | 浙江省东阳市永安阀门仪表有限公司 | Inclined micro differential manometer |
| US20050103115A1 (en) * | 2002-05-25 | 2005-05-19 | Thomas Fessele | Pressure measuring device |
| CN101137987A (en) * | 2005-03-05 | 2008-03-05 | 格伦德福斯管理联合股份公司 | Differential pressure sensor assembly and associated differential pressure sensor |
| CN202101702U (en) * | 2011-04-28 | 2012-01-04 | 山东三木自动化有限公司 | Pressure guidance and liquid collection device for coke oven gas |
| CN103278285A (en) * | 2013-06-08 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Differential pressure sensor |
| CN203981339U (en) * | 2014-07-21 | 2014-12-03 | 无锡隆盛科技股份有限公司 | A kind of differential pressure pickup shell |
-
2014
- 2014-07-21 CN CN201410348531.XA patent/CN104101460A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535792Y (en) * | 2002-05-24 | 2003-02-12 | 浙江省东阳市永安阀门仪表有限公司 | Inclined micro differential manometer |
| US20050103115A1 (en) * | 2002-05-25 | 2005-05-19 | Thomas Fessele | Pressure measuring device |
| CN101137987A (en) * | 2005-03-05 | 2008-03-05 | 格伦德福斯管理联合股份公司 | Differential pressure sensor assembly and associated differential pressure sensor |
| CN202101702U (en) * | 2011-04-28 | 2012-01-04 | 山东三木自动化有限公司 | Pressure guidance and liquid collection device for coke oven gas |
| CN103278285A (en) * | 2013-06-08 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Differential pressure sensor |
| CN203981339U (en) * | 2014-07-21 | 2014-12-03 | 无锡隆盛科技股份有限公司 | A kind of differential pressure pickup shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141015 |