CN201301986Y - Non-return valve for flow measurement - Google Patents
Non-return valve for flow measurement Download PDFInfo
- Publication number
- CN201301986Y CN201301986Y CNU2008201662752U CN200820166275U CN201301986Y CN 201301986 Y CN201301986 Y CN 201301986Y CN U2008201662752 U CNU2008201662752 U CN U2008201662752U CN 200820166275 U CN200820166275 U CN 200820166275U CN 201301986 Y CN201301986 Y CN 201301986Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- flow measurement
- valve rod
- potentiometer
- 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.)
- Expired - Fee Related
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- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model relates to a non-return valve for flow measurement, which comprises a valve body, a valve flap, a valve stem and a valve cover, wherein mutually-engaged sealing surfaces are arranged between the valve body and the valve flap, the back surface of the valve flap is fixedly connected to the lower end of the valve stem, and a reset spring is arranged between the back surface of the valve flap and the valve cover. The non-return valve is characterized in that: a position sensor is arranged at the middle part of the valve stem. By the engagement of a gear wheel of a potentiometer of the position sensor and a toothed rack of the valve stem, the position sensor converts the displacement of the valve flap into an electrical signal via the potentiometer and detects the value of the flow passing through the valve. The non-return valve has the advantages of simple structure, easy operation, low cost and high running reliability, and is applied to the flow measurement and non-return device of the outlet pipe of the wellhead oil pump.
Description
Technical field
The utility model relates to a kind of safety check, particularly about a kind of safety check with measurement flow.The utility model is applicable to the flow measurement and the check device of oil well head oil extraction pump outlet conduit.
Background technique
General one group of valve-gate valve, safety check, throttle valve and the metering mechanism of adopting of existing oil well head extracting device of oil makes up, to the oil measurement and the switch control of oil transport pipeline.Its shortcoming is that system authority is huge, operation is inconvenient, cost is high, and valve quantity is prone to fault more, and it is unreliable to move.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides a kind of cost low, easy to operate, reliable flow measurement safety check.
The technological scheme that realizes the utility model purpose comprises valve body, flap, valve rod, valve gap, be shaped on the sealing surface that cooperatively interacts between valve body and the flap, the back side of flap is fixedly connected on the lower end of valve rod, and and valve gap between be provided with return spring, mainly be to be provided with position transducer at valve rod middle part.
In above technological scheme, described position transducer is made up of a potentiometer, and the made tooth bar in fixedly connected gear and valve rod middle part cooperatively interacts and is connected on the potentiometer shaft.
In technique scheme, valve rod is provided with position limit switch.
The utility model beneficial effect compared with prior art be adopt valve rod and potentiometer gear---tooth bar is connected, the flap displacement is converted into electrical signal by potentiometer, mensuration is by the flow value of valve, and mechanism is simple, easy to operate, cost is low, reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of A-A direction among the utility model Fig. 1.
Embodiment
Flow measurement safety check as shown in Figure 1, comprise valve body 1, flap 2, valve rod 4, valve gap 5, be shaped on the sealing surface that cooperatively interacts between valve body 1 and the flap 2, the back side of flap 2 is fixedly connected on the lower end of valve rod 4, and and valve gap 5 between be provided with return spring 3, be provided with position transducer 7 at valve rod 4 middle parts.Described position transducer 7 is made up of a potentiometer, the made tooth bar in fixedly connected gear and valve rod 4 middle parts cooperatively interacts and is connected on the potentiometer shaft, valve rod 4 moves up and down and drives the potentiometer rotation, the displacement of valve rod 4, flap 2 is converted into electrical signal, and the aperture of demonstration valve reaches the rate-of flow by valve.On valve rod 4, be provided with position limit switch 6, the displacement of restriction valve rod 4.
Claims (3)
1, a kind of flow measurement safety check, comprise valve body (1), flap (2), valve rod (4), valve gap (5), be shaped on the sealing surface that cooperatively interacts between valve body (1) and the flap (2), the back side of flap (2) is fixedly connected on the lower end of valve rod (4), and and valve gap (5) between be provided with return spring (3), it is characterized in that being provided with position transducer (7) at valve rod (4) middle part.
2, flow measurement safety check according to claim 1 is characterized in that described position transducer (7) is made up of a potentiometer, and the made tooth bar in fixedly connected gear and valve rod (4) middle part cooperatively interacts and is connected on the potentiometer shaft.
3, flow measurement safety check according to claim 1 and 2 is characterized in that valve rod (4) is provided with position limit switch (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201662752U CN201301986Y (en) | 2008-10-17 | 2008-10-17 | Non-return valve for flow measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201662752U CN201301986Y (en) | 2008-10-17 | 2008-10-17 | Non-return valve for flow measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201301986Y true CN201301986Y (en) | 2009-09-02 |
Family
ID=41085612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201662752U Expired - Fee Related CN201301986Y (en) | 2008-10-17 | 2008-10-17 | Non-return valve for flow measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201301986Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631645A (en) * | 2019-10-31 | 2019-12-31 | 安徽南自电气股份有限公司 | Gas flow measuring device and measuring method thereof |
| CN111577946A (en) * | 2020-05-08 | 2020-08-25 | 重庆美的通用制冷设备有限公司 | Fluid control device and refrigeration equipment |
-
2008
- 2008-10-17 CN CNU2008201662752U patent/CN201301986Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631645A (en) * | 2019-10-31 | 2019-12-31 | 安徽南自电气股份有限公司 | Gas flow measuring device and measuring method thereof |
| CN111577946A (en) * | 2020-05-08 | 2020-08-25 | 重庆美的通用制冷设备有限公司 | Fluid control device and refrigeration equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Liangjing Group Co., Ltd. Assignor: Zhejiang Liangjing Valve Co., Ltd. Contract record no.: 2012330000237 Denomination of utility model: Non-return valve for flow measurement Granted publication date: 20090902 License type: Exclusive License Record date: 20120504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20151017 |
|
| EXPY | Termination of patent right or utility model |