CN209819229U - Pressure-limiting protection device for well site flow pipeline - Google Patents
Pressure-limiting protection device for well site flow pipeline Download PDFInfo
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- CN209819229U CN209819229U CN201920307928.2U CN201920307928U CN209819229U CN 209819229 U CN209819229 U CN 209819229U CN 201920307928 U CN201920307928 U CN 201920307928U CN 209819229 U CN209819229 U CN 209819229U
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Abstract
The utility model discloses a pressure limiting protection device of well head flow pipeline, this pressure limiting protection device are hydraulic output device, and it includes high pressure sensor, low pressure sensor, import ball valve, export ball valve, pipeline and valve block, and high low pressure sensor installs on same valve block, and high low pressure sensor's import, export, let out the mouth with the pipeline be connected with exit ball valve, form hydraulic control logic circuit, the highly compressed shutoff of high pressure sensor control flow pipeline, the low pressure shutoff of low pressure sensor control flow pipeline. The device has the advantages of simple structure, stable performance, sensitive response and convenient installation, and is suitable for the safety production of ground oil and gas wells.
Description
Technical Field
The utility model relates to a protection device, concretely relates to pressure limiting protection device of well site flow pipeline.
Background
The flow pipeline pressure limiting protection device is an important safety protection device for a petroleum and natural gas well site, is particularly important for a field unattended well site, and is unstable in the existing electronic hydraulic transmission.
Disclosure of Invention
The utility model aims to provide a: a pressure limiting protection device for a well site flow pipeline is designed, and a valve is automatically closed immediately under the emergency condition that the pressure of the flow pipeline output end of an oil gas wellhead is increased or reduced, so that oil gas leakage accidents are avoided.
The technical solution of the utility model is that: the pressure limiting protection device of the well site flow pipeline is a hydraulic output device and comprises a high-pressure sensor, a low-pressure sensor, an inlet ball valve, an outlet ball valve, a pipeline and a valve block, wherein the high-pressure sensor and the low-pressure sensor are installed on the same valve block, the inlet, the outlet and a discharge port of the high-pressure sensor are connected with the inlet and outlet ball valves through pipelines to form a hydraulic control logic loop, the high-pressure sensor controls the turn-off of high pressure of the flow pipeline, and the low-pressure sensor controls the turn-off of low pressure of the flow pipeline.
Wherein the regulating pressure of the low-pressure sensor is 500-1500psi and is used for protecting the low pressure of the process pipeline; the adjusting pressure of the high-pressure sensor is 2000-5000psi, and the high-pressure sensor is used for protecting the high pressure of the process pipeline; the control pressure of the high-low pressure sensor after being used in combination is more than 500psi and less than 5000 psi.
The utility model discloses the advantage of device is:
1. the high-low pressure sensors are combined on the same valve block and form a certain hydraulic logic relation.
2. And the stability of performance can be ensured under severe field environment by adopting a mechanical sensor.
3. The sensor has fast response time and can transmit signals in time through hydraulic pressure in case of emergency.
4. The device is low in price, does not need manpower, and monitors in real time.
5. The set values of the low pressure sensor and the high pressure sensor are adjusted according to the pressure of the wellsite process line.
6. The device is mechanical hydraulic transmission, the performance is stable and reliable, and when the pressure of a flow pipeline of a well site is reduced (pipeline blasting) or increased (pipeline blocking), the pressure limiting protection device can immediately sense the pressure of the flow pipeline and timely transmit a pressure signal to a wellhead safety control system, so that a valve is closed, field equipment is protected, and a large amount of oil gas is prevented from leaking.
7. The device has the advantages of simple structure, stable performance, sensitive response and convenient installation, and is suitable for the safety production of ground oil and gas wells.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
In the figure: A. a low pressure sensor inlet; B. a low pressure sensor outlet; C. a low pressure sensor vent; D. a high pressure sensor inlet; E. a high pressure sensor outlet; F. a high pressure sensor vent; G. a low pressure sensor inlet control valve; H. and a high-pressure sensor outlet control valve.
Detailed Description
The technical scheme of the utility model is further explained in the following by combining the attached drawings.
As shown in fig. 1, the pressure-limiting protection device for the well site flow pipeline is a hydraulic output device, and comprises a high-pressure sensor, a low-pressure sensor, an inlet ball valve, an outlet ball valve, a pipeline and a valve block, wherein the high-pressure sensor and the low-pressure sensor are mounted on the same valve block, the inlet, the outlet and the discharge port of the high-pressure sensor are connected with the inlet ball valve and the outlet ball valve through pipelines to form a hydraulic control logic loop, the high-pressure sensor controls the high-pressure shutoff of the flow pipeline, and the low-pressure sensor controls the low-pressure shutoff of.
The utility model discloses a theory of operation is:
(1) opening an inlet and outlet ball valve G, H, when the pressure in the flow pipeline is lower than the set value of the low pressure sensor, the inlet A and the outlet B of the low pressure sensor in the figure 1 are not communicated, at the moment, the outlet B is communicated with a discharge port C, the inlet D and the outlet E of the high pressure sensor are communicated, and the outlet E is not communicated with a discharge port F;
(2) when the pressure of the process pipeline is higher than the set value of the low-pressure sensor and lower than the set value of the high-pressure sensor, the inlet A and the outlet B of the low-pressure sensor are communicated, the outlet B and the discharge port C are not communicated, the inlet D and the outlet E of the high-pressure sensor are communicated, and the outlet E and the discharge port F are not communicated;
(3) when the pressure of the flow pipeline is higher than the set value of the high-pressure sensor, the inlet A of the low-pressure sensor is communicated with the outlet B, the outlet B is not communicated with the discharge port C, the inlet D of the high-pressure sensor is not communicated with the outlet E, and the outlet E is communicated with the discharge port F.
Claims (2)
1. Pressure limiting protection device of well head flow pipeline, its characteristic is: the pressure limiting protection device is a hydraulic output device and comprises a high-pressure sensor, a low-pressure sensor, an inlet ball valve, an outlet ball valve, a pipeline and a valve block, wherein the high-pressure sensor and the low-pressure sensor are arranged on the same valve block, the inlet, the outlet and a release port of the high-pressure sensor are connected with the inlet ball valve and the outlet ball valve through pipelines to form a hydraulic control logic loop, the high-pressure sensor controls the high-pressure shutoff of a flow pipeline, and the low-pressure sensor controls the low-pressure shutoff of the flow pipeline.
2. The pressure limiting protection device of the wellhead flow line of claim 1, wherein: the regulating pressure of the low-pressure sensor is 500-1500psi and is used for protecting the low pressure of the process pipeline; the adjusting pressure of the high-pressure sensor is 2000-5000psi, and the high-pressure sensor is used for protecting the high pressure of the process pipeline; the control pressure of the high-low pressure sensor after being used in combination is more than 500psi and less than 5000 psi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920307928.2U CN209819229U (en) | 2019-03-12 | 2019-03-12 | Pressure-limiting protection device for well site flow pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920307928.2U CN209819229U (en) | 2019-03-12 | 2019-03-12 | Pressure-limiting protection device for well site flow pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209819229U true CN209819229U (en) | 2019-12-20 |
Family
ID=68875205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920307928.2U Active CN209819229U (en) | 2019-03-12 | 2019-03-12 | Pressure-limiting protection device for well site flow pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209819229U (en) |
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2019
- 2019-03-12 CN CN201920307928.2U patent/CN209819229U/en active Active
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