CN106872097A - A kind of differential pressure transmitter with protection device - Google Patents
A kind of differential pressure transmitter with protection device Download PDFInfo
- Publication number
- CN106872097A CN106872097A CN201710290464.4A CN201710290464A CN106872097A CN 106872097 A CN106872097 A CN 106872097A CN 201710290464 A CN201710290464 A CN 201710290464A CN 106872097 A CN106872097 A CN 106872097A
- Authority
- CN
- China
- Prior art keywords
- impulse
- impulse room
- room
- protection device
- differential pressure
- 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
Links
- 238000005303 weighing Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0618—Overload protection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention proposes a kind of differential pressure transmitter with protection device, including detecting means and control unit, it is characterised in that：The detecting means include the first impulse room of connection high-pressure mouth, the second impulse room of connection low pressure port and connect the weighing apparatus pressure passageway of the first impulse room and the second impulse room, the Heng Yatongdaochu is provided with a balanced valve to control the on/off of the passage, sensing part is respectively arranged with the first impulse room and the second impulse room, the control unit includes controller and communicator, the sensing part, balanced valve are respectively connecting to the controller, and the communicator has cable interface.The present invention is by increasing a protection device so that differential pressure transmitter operating pressure is no more than its proof pressure, is damaged because of overvoltage so as to greatly reduce transmitter.
Description
Technical field
The present invention relates to a kind of differential pressure transmitter with protection device.
Background technology
Differential pressure transmitter be widely used in detection gas tiny leakage (correspondence detecting instrument it is common be air tiny-leakage inspection
Survey instrument), because its range smaller (such as 1kPa) and proof pressure are also smaller (usually 3 times of range), often occur because of detection
Big leakage occurs in part causes work differential pressure no to scale even beyond proof pressure so as to the situation for causing differential pressure transmitter to damage.
The content of the invention
In view of prior art has drawbacks described above, the present invention proposes a kind of differential pressure transmitter with protection device, passes through
Increase a protection device so that differential pressure transmitter operating pressure is no more than its proof pressure, so as to greatly reduce transmitter
Damaged because of overvoltage, particular technique content is as follows：
A kind of differential pressure transmitter with protection device, including detecting means and control unit, the detecting means include that connection is high
Press the first impulse room of mouth, the second impulse room of connection low pressure port and connect the first impulse room and the second impulse room
Weighing apparatus pressure passageway, the Heng Yatongdaochu is provided with a balanced valve to control the on/off of the passage, and the first impulse room and second are drawn
Sensing part is respectively arranged with pressure chamber, the control unit includes controller and communicator, and the sensing part, balanced valve are connected respectively
To the controller, the communicator has cable interface.
In one or more embodiments of the invention, the balanced valve is magnetic valve, and it is controlled by the controller reality
It is existing opening/closing.
In one or more embodiments of the invention, the balanced valve is when the first impulse room and the pressure difference of the second impulse room
Turned on when reaching N times of range, the N is between 1.1 to 1.5.
In one or more embodiments of the invention, the control unit is provided with the display screen being connected with the controller.
A kind of differential pressure transmitter with protection device, including detecting means and control unit, the detecting means include that connection is high
Press the first impulse room of mouth, the second impulse room of connection low pressure port and connect the first impulse room and the second impulse room
Weighing apparatus pressure passageway, the Heng Yatongdaochu is provided with a balanced valve to control the on/off of the passage, and the first impulse room and second are drawn
Sensing part is respectively arranged with pressure chamber, the control unit includes controller, and the sensing part, balanced valve are respectively connecting to the control
Device processed.
In one or more embodiments of the invention, the balanced valve is magnetic valve, and it is controlled by the controller simultaneously
When the pressure difference of the first impulse room and the second impulse room reaches N times of range turn on, the N be 1.1 to 1.5 between.
In one or more embodiments of the invention, the control unit is provided with the display screen being connected with the controller.
The beneficial effects of the invention are as follows：(the protection of a magnetic valve is connected between two impulse rooms of differential pressure transmitter
Device), when the operating pressure of differential pressure transmitter reaches 1.2 times of its range, driving lower valve of the magnetic valve in controller
Action, two impulse rooms are connected, so as to reach effect of protection differential pressure transmitter.It is of the invention with preferably technical
And practicality, it is adapted to promote the use of.
Brief description of the drawings
Fig. 1 is the theory diagram of the differential pressure transmitter with protection device of the invention.
Fig. 2 is the structural representation of the differential pressure transmitter with protection device of the invention.
Specific embodiment
Below in conjunction with attached Fig. 1 and 2, application scheme is further described：
A kind of differential pressure transmitter with protection device, including detecting means 1 and control unit 2, the detecting means 1 include connection
First impulse room 101 of high-pressure mouth, the second impulse room 102 of connection low pressure port and connect the first impulse room 101 and the
The weighing apparatus pressure passageway 103 of two impulse rooms 102, is provided with a balanced valve 4 to control the on/off of the passage, institute at the weighing apparatus pressure passageway 103
State and sensing part 3 be respectively arranged with the first impulse room 101 and the second impulse room 103, the control unit 2 include controller 21, with
And the communicator 22 and display screen 23 being connected with controller 21, the sensing part 3, balanced valve 4 are respectively connecting to the controller
21, the communicator 22 has cable interface.The balanced valve 4 is magnetic valve, and it is controlled by the controller 21 and when first
The pressure difference of the impulse room 102 of impulse room 101 and second is turned on when reaching 1.2 times of range.
A magnetic valve 4 (protection device) is connected between two impulse rooms 101,102 of differential pressure transmitter, works as elementary errors
When the operating pressure of pressure transmitter reaches 1.2 times of its range, the magnetic valve 4 is acted under the driving of controller 21, by two
Impulse room 101,102 is connected, so as to reach effect of protection differential pressure transmitter.
It is that above-mentioned preferred embodiment should be regarded as application scheme implementation method for example, all with application scheme thunder
Technology deduction that is same, approximately or based on this making, replacement, improvement etc., are regarded as the protection domain of this patent.
Claims (7)
1. a kind of differential pressure transmitter with protection device, including detecting means and control unit, it is characterised in that：The detecting means bag
Include the first impulse room, the second impulse room of connection low pressure port and connection the first impulse room and second of connection high-pressure mouth
The weighing apparatus pressure passageway of impulse room, the Heng Yatongdaochu is provided with a balanced valve to control the on/off of the passage, the first impulse room
Be respectively arranged with sensing part in the second impulse room, the control unit includes controller and communicator, the sensing part, balanced valve
The controller is respectively connecting to, the communicator has cable interface.
2. the differential pressure transmitter with protection device according to claim 1, it is characterised in that：The balanced valve is electromagnetism
Valve, its be controlled by the controller realize it is opening/closing.
3. the differential pressure transmitter with protection device according to claim 1 and 2, it is characterised in that：The balanced valve is worked as
Turned on when the pressure difference of the first impulse room and the second impulse room reaches N times of range, the N is between 1.1 to 1.5.
4. the differential pressure transmitter with protection device according to claim 1 and 2, it is characterised in that：The control unit sets
There is the display screen being connected with the controller.
5. a kind of differential pressure transmitter with protection device, including detecting means and control unit, it is characterised in that：The detecting means bag
Include the first impulse room, the second impulse room of connection low pressure port and connection the first impulse room and second of connection high-pressure mouth
The weighing apparatus pressure passageway of impulse room, the Heng Yatongdaochu is provided with a balanced valve to control the on/off of the passage, the first impulse room
Be respectively arranged with sensing part in the second impulse room, the control unit includes controller, and the sensing part, balanced valve are connected respectively
To the controller.
6. the differential pressure transmitter with protection device according to claim 5, it is characterised in that：The balanced valve is electromagnetism
Valve, it is controlled by the controller and is turned on when the pressure difference of the first impulse room and the second impulse room reaches N times of range, described
N be 1.1 to 1.5 between.
7. the differential pressure transmitter with protection device according to claim 5 or 6, it is characterised in that：The control unit sets
There is the display screen being connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290464.4A CN106872097A (en) | 2017-04-28 | 2017-04-28 | A kind of differential pressure transmitter with protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290464.4A CN106872097A (en) | 2017-04-28 | 2017-04-28 | A kind of differential pressure transmitter with protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106872097A true CN106872097A (en) | 2017-06-20 |
Family
ID=59161709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710290464.4A Pending CN106872097A (en) | 2017-04-28 | 2017-04-28 | A kind of differential pressure transmitter with protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106872097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974830A (en) * | 2019-04-17 | 2019-07-05 | 江苏欣达通信科技股份有限公司 | The detection device calculated based on weighing |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4135407A (en) * | 1978-04-03 | 1979-01-23 | The Foxboro Company | Method and apparatus for overrange protection of the transducer in a differential pressure transmitter |
| US4827772A (en) * | 1987-10-19 | 1989-05-09 | Texaco Inc. | Differential pressure sensing means and method |
| JPH0510842A (en) * | 1991-07-02 | 1993-01-19 | Fuji Electric Co Ltd | Method for stably generating micro differential pressure |
| US5531120A (en) * | 1992-04-23 | 1996-07-02 | Hitachi, Ltd. | Compact differential pressure transmitter having first and second damper chambers |
| WO2002063266A1 (en) * | 2001-02-02 | 2002-08-15 | Endress+Hauser Gmbh + Co. Kg. | Differential pressure sensor with overload protection |
| JP2011081548A (en) * | 2009-10-06 | 2011-04-21 | Canon Inc | Pressure control device |
| CN202614465U (en) * | 2012-06-19 | 2012-12-19 | 杭州石林自动化工程有限公司 | Full automatic pressure checking table of high hydrostatic pressure differential pressure transmitter |
| CN103454040A (en) * | 2013-09-11 | 2013-12-18 | 博益(天津)气动技术研究所有限公司 | Overpressure protective device for differential pressure transducer |
| CN203422190U (en) * | 2013-09-11 | 2014-02-05 | 博益(天津)气动技术研究所有限公司 | Over-pressure protector of differential pressure sensor |
| CN204902942U (en) * | 2015-09-02 | 2015-12-23 | 上海雷尼威尔技术有限公司 | Differential pressure measurement protection device |
| CN206832401U (en) * | 2017-04-28 | 2018-01-02 | 广东省中山市质量计量监督检测所 | A kind of differential pressure transmitter with protection device |
-
2017
- 2017-04-28 CN CN201710290464.4A patent/CN106872097A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4135407A (en) * | 1978-04-03 | 1979-01-23 | The Foxboro Company | Method and apparatus for overrange protection of the transducer in a differential pressure transmitter |
| US4827772A (en) * | 1987-10-19 | 1989-05-09 | Texaco Inc. | Differential pressure sensing means and method |
| JPH0510842A (en) * | 1991-07-02 | 1993-01-19 | Fuji Electric Co Ltd | Method for stably generating micro differential pressure |
| US5531120A (en) * | 1992-04-23 | 1996-07-02 | Hitachi, Ltd. | Compact differential pressure transmitter having first and second damper chambers |
| WO2002063266A1 (en) * | 2001-02-02 | 2002-08-15 | Endress+Hauser Gmbh + Co. Kg. | Differential pressure sensor with overload protection |
| JP2011081548A (en) * | 2009-10-06 | 2011-04-21 | Canon Inc | Pressure control device |
| CN202614465U (en) * | 2012-06-19 | 2012-12-19 | 杭州石林自动化工程有限公司 | Full automatic pressure checking table of high hydrostatic pressure differential pressure transmitter |
| CN103454040A (en) * | 2013-09-11 | 2013-12-18 | 博益(天津)气动技术研究所有限公司 | Overpressure protective device for differential pressure transducer |
| CN203422190U (en) * | 2013-09-11 | 2014-02-05 | 博益(天津)气动技术研究所有限公司 | Over-pressure protector of differential pressure sensor |
| CN204902942U (en) * | 2015-09-02 | 2015-12-23 | 上海雷尼威尔技术有限公司 | Differential pressure measurement protection device |
| CN206832401U (en) * | 2017-04-28 | 2018-01-02 | 广东省中山市质量计量监督检测所 | A kind of differential pressure transmitter with protection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974830A (en) * | 2019-04-17 | 2019-07-05 | 江苏欣达通信科技股份有限公司 | The detection device calculated based on weighing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202614465U (en) | Full automatic pressure checking table of high hydrostatic pressure differential pressure transmitter | |
| CN103411742B (en) | Airduct blast tightness method of testing | |
| CN208902338U (en) | A kind of high static pressure differential pressure transmitter detection device | |
| CN103982745A (en) | Temporary pipeline sealing system high in reliability | |
| CN104949831A (en) | Online checking device and methods for pilot valve and main valve of pilot operated safety valve | |
| CN206832401U (en) | A kind of differential pressure transmitter with protection device | |
| CN106872097A (en) | A kind of differential pressure transmitter with protection device | |
| CN103487219A (en) | Small general-purpose plane cockpit and fuel tank integrated gas tightness detecting system | |
| CN203719837U (en) | Automobile silencer airtightness detection tool | |
| CN105241616A (en) | Civil defense door airtightness detection apparatus with protection function | |
| CN103868665A (en) | Airtight detection method of high-pressure gas circuit in fuel system | |
| CN204788858U (en) | Fuel filter seal tightness test device | |
| CN103353381A (en) | Apparatus capable of carrying out on-line detection on glove integrity in isolator system | |
| CN204228364U (en) | A kind of air tightness detection apparatus | |
| CN204269306U (en) | Aircraft pitot-static pressure exerciser | |
| CN104199442B (en) | The detection means and method of air conditioner electric control system | |
| CN103926945B (en) | Cavity intelligent pressure control system and pressure control method of the same | |
| CN205074300U (en) | Clear stifled device of pressure / pressure differential measuring instrument | |
| CN103389190A (en) | Wind-pressure smoke detection and leakproofness testing method of air pipe and wind-pressure smoke detection testing system of air pipe | |
| CN203350001U (en) | Air-conditioner filling device tightness detection tool | |
| CN204514556U (en) | Block apparatus is surveyed in a kind of woven hose leak detection | |
| CN205991860U (en) | Test device for detected air pressure pressure transducer | |
| CN104833464A (en) | Multifunctional airtight detector and detection method thereof | |
| CN205690084U (en) | A kind of Radix Saposhnikoviae probe of pipeline leakage measuring instrument by sonic | |
| CN204731018U (en) | Pilot valve and main valve on-line testing device in pilot operated safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |