CN87205500U - Differential pressure sensor - Google Patents
Differential pressure sensor Download PDFInfo
- Publication number
- CN87205500U CN87205500U CN 87205500 CN87205500U CN87205500U CN 87205500 U CN87205500 U CN 87205500U CN 87205500 CN87205500 CN 87205500 CN 87205500 U CN87205500 U CN 87205500U CN 87205500 U CN87205500 U CN 87205500U
- Authority
- CN
- China
- Prior art keywords
- piston
- differential pressure
- reed pipe
- dry reed
- pressure sensor
- 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.)
- Withdrawn
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- Measuring Fluid Pressure (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model discloses a novel differential pressure sensor mainly composed of a dry reed pipe, a magnetic steel, a stainless steel spring and a piston. The differential pressure makes the piston move in the crust of the piston. When the magnetic steel fixed to the front of the piston moves to the right lower part of the dry reed pipe following the piston, the normally open contact in the dry reed pipe closes due to magnetic force function, which can cause the output of the electrical signal in external circuit, and can be used for a controlling instrument to turn on a flushing valve.
Description
The utility model relates to a kind of differential pressure pickup that the drip irrigation filter washes control section automatically that is used for.
The obstruction of water dropper is the problem that domestic and international all drip irrigation systems all exist.The way that solves has: (1) improves the water source filter quality; (2) dirt is taked treatment measures after entering system.The former belongs to the measure that effects a permanent cure in the two.
Drip irrigation system is in running, and the filtering medium layer of filter (as filter screen) is when water passes through, produce certain loss of flood peak and form pressure reduction, along with attached long-pending dirt on the dielectric layer increases, pressure reduction also increases thereupon, to to a certain degree opening flushing valve, remove crude removal.Otherwise the flow and the pressure that enter system all influence decline system's normal operation.In China, opening valve flushing work in the past all is to be finished by manpower, is difficult to accomplish accurately and timely.
As controlling the work of opening the valve flushing automatically with instrument, key issue is the differential pressure pickup of a kind of economical rationality of design, drives relative assembly to reach out the purpose of valve flushing.At the differential pressure pickup that engineering departments such as space flight adopt, mainly be the principle of utilizing resistor disc distortion resistance to change, output microvolt level signal voltage, price is more expensive.
The novel principle according to pressure reduction promotion piston of the design with tongue tube, magnet steel and spring, is assembled cleverly, very easily pressure difference signal is converted into the signal of telecommunication of millivolt level, and cost is very low.
Be illustrated below in conjunction with accompanying drawing.
8. making the piston shell with plastic tube, 2. is piston, connects with piston rod 5..Piston rod supports and 7. play the guiding role.Pipe is chewed 10. for connecting the passage of filter inboard (before filtering); Pipe is chewed 9. for connecting the passage of the filter outside (filtering the back).1. stainless steel spring is installed in piston nose.Pressure difference between the screen pack medial and lateral forces piston 2. to be moved to the left because long-pending attached dirt increases increase gradually, and the compression spring.In case it is normal that pressure reduction recovers, spring makes piston reset.At the head of piston, be fixed with a fritter magnet steel 3., when magnet steel move to piston tongue tube 4. under the time, because magneticaction, the magnetic line of force penetrated the plastic piston shell, acted on the tongue tube, make and the secondary normally opened contact adhesive that tongue tube is interior make external circuit form the loop.So, at output (12) the output signal of telecommunication.(11) be the power supply of external circuit.Support has scale value on 6., engraves the different pressure reduction numerical value that prior rate is reserved.Therefore, as long as tongue tube is fixed on some pressure reduction scale values, sensor can be exported the signal of telecommunication when this pressure difference, and automatic instrument(s) leaves valve according to this signal and carries out the blowdown flushing.
Claims (1)
- One by plastic casing 8., piston 2., magnet steel 3., the differential pressure pickup 1. 4. formed with tongue tube of spring.It is characterized in that:1, by shell 8. with piston 2. pressure difference signal is converted to piston 2. move horizontally length value.2,3. 4. the piston length value that moves horizontally 2. is converted to the signal of telecommunication by magnet steel with tongue tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87205500 CN87205500U (en) | 1987-11-30 | 1987-11-30 | Differential pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87205500 CN87205500U (en) | 1987-11-30 | 1987-11-30 | Differential pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87205500U true CN87205500U (en) | 1988-10-05 |
Family
ID=4821241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87205500 Withdrawn CN87205500U (en) | 1987-11-30 | 1987-11-30 | Differential pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87205500U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485913A (en) * | 2016-06-13 | 2017-12-19 | 汉斯萨塞拉思有限责任两合公司 | Filter assemblies |
| CN110631165A (en) * | 2019-10-25 | 2019-12-31 | 重庆懿熙品牌策划有限公司 | Dust collector and airtight space ventilation device thereof |
| CN115681118A (en) * | 2022-10-19 | 2023-02-03 | 江苏科翔制泵有限公司 | Quick detection device of general type water pump dynamic water pressure stability |
| CN117482644A (en) * | 2024-01-03 | 2024-02-02 | 南方环境有限公司 | A ventilation adjustment mechanism for dust collecting equipment |
-
1987
- 1987-11-30 CN CN 87205500 patent/CN87205500U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485913A (en) * | 2016-06-13 | 2017-12-19 | 汉斯萨塞拉思有限责任两合公司 | Filter assemblies |
| CN110631165A (en) * | 2019-10-25 | 2019-12-31 | 重庆懿熙品牌策划有限公司 | Dust collector and airtight space ventilation device thereof |
| CN115681118A (en) * | 2022-10-19 | 2023-02-03 | 江苏科翔制泵有限公司 | Quick detection device of general type water pump dynamic water pressure stability |
| CN115681118B (en) * | 2022-10-19 | 2023-10-13 | 江苏科翔制泵有限公司 | General type water pump dynamic water pressure stability short-term test device |
| CN117482644A (en) * | 2024-01-03 | 2024-02-02 | 南方环境有限公司 | A ventilation adjustment mechanism for dust collecting equipment |
| CN117482644B (en) * | 2024-01-03 | 2024-03-19 | 南方环境有限公司 | A ventilation adjustment mechanism for dust collecting equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |