CN-116263369-B - System and method for detecting pressure relief and backflow of fire pump of large-scale oil and gas field station

Abstract

The invention relates to the technical field of fire-fighting systems of large oil and gas fields, in particular to a pressure relief backflow detection system and a pressure relief backflow detection method for fire-fighting pumps of a large oil and gas field, wherein the pressure relief backflow detection system comprises a working pipeline and a standby pipeline, the working pipeline and the standby pipeline are respectively provided with a fire-fighting pump, the output ends of the working pipeline and the standby pipeline are respectively connected with a fire-fighting water outlet pipeline, the fire-fighting water outlet pipelines of the working pipeline and the standby pipeline are communicated through communication pipelines, the communication pipelines are connected with a pressure relief pipeline 3 and a backflow detection pipeline in parallel, and the output ends of the pressure relief pipeline and the backflow detection pipeline are converged into the same pipeline and are communicated with a fire-fighting water tank or a fire pool; the invention adopts an integrated installation process, solves the problem of system overpressure in the operation process of the fire-fighting system automatically controlled by a large oil-gas station, and meets the requirements of flow and pressure detection, hydrant test and the like of the daily maintenance of the fire-fighting system.

Inventors

• XU JIANRONG
• WU ZHIBIN
• ZENG RUI
• DU JIE
• ZHONG FAGUO
• YANG CHONG
• HE LIPENG
• WANG GUOZHU
• YE CHANGFA

Assignees

• 长庆工程设计有限公司
• 中国石油天然气股份有限公司

Dates

Publication Date

20260508

Application Date

20211213

Claims (7)

1. 1. The system is characterized by comprising a working pipeline (1) and a standby pipeline (2), wherein the working pipeline (1) and the standby pipeline (2) are respectively provided with a fire pump, the output ends of the working pipeline (1) and the standby pipeline (2) are respectively connected with a fire-fighting water outlet pipeline (5), the fire-fighting water outlet pipelines (5) of the working pipeline and the standby pipeline are communicated through a communication pipeline (15), the communication pipeline (15) is connected with a pressure relief pipeline (3) and a backflow detection pipeline (4) in parallel, and the output ends of the pressure relief pipeline (3) and the backflow detection pipeline (4) are respectively converged into the same pipeline and are communicated with a fire-fighting water tank or a fire-fighting pool; the pressure relief pipeline (3) comprises a pressure relief valve (8) and a first electric control valve (11), wherein the two first electric control valves (11) are respectively arranged on an inlet pipeline and an outlet pipeline of the pressure relief valve (8); the backflow detection pipeline (4) comprises a flowmeter (10) and a second electric control valve (12), wherein the two second electric control valves (12) are respectively arranged on the pipeline at the inlet and the outlet of the flowmeter (10), and a fire hydrant (9) is further arranged on the pipeline at the inlet of the flowmeter (10); The fire hydrant (9) adopts a pressure reducing and stabilizing fire hydrant, the pressure of a fire pump outlet is high, the pressure reducing and stabilizing fire hydrant is convenient to test by adjusting the pressure according to the requirement, the second electric control valve (12) is a valve for overhauling the fire hydrant (9) and the flow meter (10), and the second electric control valve (12) is an electric ball valve and is in an open state at ordinary times.
2. 2. The system for detecting the pressure relief and backflow of the fire pump of the large oil and gas field station as claimed in claim 1 is characterized in that a third electric control valve (13) is respectively arranged at the connection position of the communication pipeline (15) and the working pipeline (1) and the connection position of the communication pipeline and the standby pipeline (2).
3. 3. The system for detecting the pressure relief and backflow of the fire pump of the large oil and gas field station as claimed in claim 1 is characterized in that the fire water outlet pipelines (5) at the output ends of the working pipeline (1) and the standby pipeline (2) are respectively connected with a fourth electric control valve (14).
4. 4. The system for detecting the pressure relief and backflow of the fire pump of the large oil and gas field station as claimed in claim 1 is characterized in that the working pipeline (1) is an electric fire pump control pipeline, and a fire pump (6) is arranged on the pipeline.
5. 5. The system for detecting the pressure relief and backflow of the fire pump of the large oil and gas field station as claimed in claim 1, wherein the standby pipeline (2) is a diesel fire pump control pipeline, and a fire diesel pump (7) is arranged on the pipeline.
6. 6. The system for detecting the pressure relief and backflow of the fire pump of the large oil and gas field station is characterized in that the pressure relief valve (8) is a digital display type pressure relief valve.
7. 7. A method for detecting a pressure relief and backflow detection system of a fire pump of a large oil and gas field station, which comprises the method for detecting the pressure relief and backflow of the fire pump of the large oil and gas field station according to any one of claims 1 to 6, and is characterized by comprising the following steps: Presetting the pressure relief pressure on a pressure relief pipeline (3) according to the safety pressure values of the fire pump on the working pipeline (1) and the standby pipeline (2); When the fire pump of the large-scale oil and gas field station is in normal fire-fighting operation, opening the pressure on the pressure relief pipeline (3) when the pressure is higher than the preset pressure, and relieving the pressure; when a large-scale oil-gas field station fire pump needs to be subjected to timing test operation to pump a reflux test pump or overhauled, the pressure relief pipeline (3) is closed, the reflux detection pipeline (4) is opened, and whether the flow of the fire pump meets the design parameters of the fire pump is detected through the reflux detection pipeline (4); If the detected flow rate of the fire pump does not meet the design parameter requirement, the fire pump is indicated to be out of order and needs maintenance or replacement.

Description

System and method for detecting pressure relief and backflow of fire pump of large-scale oil and gas field station Technical Field The invention relates to the technical field of fire-fighting systems of large oil and gas fields, in particular to a pressure relief backflow detection system and a detection method for fire-fighting pumps of large oil and gas fields. Background The fire-fighting system of the large-scale oil and gas station is large in scale, large in flow and high in system pressure, and is automatically controlled. Because the large-scale station facilities are various, the fire-fighting water consumption of the fire disaster which occurs at different positions is different, and the difference between the maximum fire-fighting flow and the minimum fire-fighting flow is larger. The fire pump selection comprehensively considers factors such as maintenance operation control, reduces the number of the fire pumps as much as possible, and if the fire pump is determined according to the maximum fire water consumption, the fire pump with large flow can cause the fire system pressure to exceed the normal operation pressure when the fire water consumption is small. After the fire-fighting system is built, testing and acceptance are carried out. The fire-fighting system of the large-scale oil and gas station has large flow, and the conventional method of adopting a mobile detection facility at the detection position of the reserved pipeline cannot meet the requirement of high-flow fire-fighting acceptance test, so that a fixed flow detection facility is required to be arranged. The fire pump is regularly operated in daily maintenance, the fire system is required to test the flow and pressure of the fire pump by using the fire hydrant, and the fire pressure is required to be observed through the field use of the fire hydrant so as to determine whether the water supply pump of the fire system meets the requirement. In order to realize the functions, the operation and detection process of the automatic control fire-fighting system of the large-scale oil-gas field station is required to be met by adopting a measure which can automatically operate and is suitable for large pressure and flow amplitude. Disclosure of Invention The invention overcomes the defects of the prior art, and provides a pressure relief backflow detection system and a detection method for a fire pump of a large oil and gas field station, in particular to the pressure relief backflow detection system and the detection method for the fire pump of the large oil and gas field station, which solve the problem of system overpressure in the operation process of a fire system automatically controlled by the large oil and gas field station and meet the requirements of flow and pressure detection and hydrant test of daily maintenance of the fire system. The technical problems solved by the invention can be realized by adopting the following technical scheme: The utility model provides a large-scale oil and gas field station fire pump pressure release backward flow detecting system, includes work pipeline and reserve pipeline, work pipeline and reserve pipeline all are provided with the fire pump respectively, work pipeline and reserve pipeline's output all are connected with fire control water outlet pipe, communicate through the intercommunication pipeline between the fire control water outlet pipe of two, it has pressure release pipeline and backward flow detecting pipeline to connect in parallel on the communicating pipe line, pressure release pipeline and backward flow detecting pipeline's output all unifies same pipeline, and communicates with fire control water pitcher or fire control pond. Further, the pressure relief pipeline include relief valve and first electronic control valve, first electronic control valve is provided with two, sets up respectively on the entry pipeline and the export pipeline of relief valve. Further, the backflow detection pipeline comprises a flowmeter and second electric control valves, two second electric control valves are arranged on pipelines at the inlet and the outlet of the flowmeter respectively, and a fire hydrant is further arranged on the pipeline at the inlet of the flowmeter. Further, a third electric control valve is arranged at the connection position of the communication pipeline and the working pipeline and the connection position of the communication pipeline and the standby pipeline respectively. Further, the fire control outlet pipe lines of the output ends of the working pipeline and the standby pipeline are respectively connected with a fourth electric control valve. Further, the working pipeline is an electric fire pump control pipeline, and a fire pump is arranged on the pipeline. Further, the standby pipeline is a control pipeline of the diesel fire pump, and a fire diesel pump is arranged on the control pipeline. Further, the relief valve is a digital display type relief valve. Further