Metering, pressure regulating and analyzing valve bank pry

Abstract

The utility model provides a metering, pressure regulating and analyzing valve group pry which comprises a pry seat, a measuring unit, a pressure regulating unit and an online analyzing unit, the measuring unit, the pressure regulating unit and the online analyzing unit are all installed on the pry seat, and the measuring unit, the pressure regulating unit and the online analyzing unit are sequentially arranged on a main pipe in the oil-gas fluid conveying direction. Wherein the measuring unit is used for measuring the flow of oil-gas fluid, the pressure regulating unit is used for regulating and controlling the oil-gas fluid to preset pressure, and the online analysis unit is used for detecting and analyzing components and physicochemical properties of the oil-gas fluid. The utility model has the beneficial effects that the measuring unit, the voltage regulating unit and the on-line analysis unit are integrated into a whole through the prying seat, so as to realize more compact design, higher operation convenience and more accurate measuring result.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas transportation control equipment, in particular to a metering pressure regulating and analyzing valve group skid. Background Art

[0002] In industries such as petrochemicals, natural gas transportation and distribution, and industrial process control, the processing and analysis of natural gas fluid media is a vital link. These industries usually require precise pressure regulation, flow measurement, and online analysis of key parameters such as gas composition, hydrogen sulfide, and water dew point of natural gas to ensure safe and efficient operation of the system and meet environmental protection and product quality requirements.

[0003] However, traditional natural gas fluid medium processing and analysis systems often use decentralized, independent components to achieve these functions. For example, a separate pressure regulating valve is used for pressure regulation, flow measurement is performed through a flow meter, and various analyzers are relied on to detect gas composition, hydrogen sulfide concentration, and water dew point. This decentralized design has some disadvantages, mainly including:

[0004] (1) The installation of multiple independent components requires a large space, which is particularly prominent in industrial sites with limited space. In addition, since each component requires separate installation and commissioning, this greatly increases the installation and maintenance costs of the system.

[0005] (2) The connections and piping arrangements between components may result in pressure loss, which in turn affects the overall efficiency of the system. At the same time, leakage and friction at the connections may also become sources of measurement errors, reducing the measurement accuracy of the system.

[0006] (3) The decentralized design means that the overall performance of the system is limited by the performance of each component. Once a component fails or its performance degrades, the reliability and stability of the entire system will be affected.

[0007] Therefore, it is necessary to study a metering pressure regulating analysis valve group skid to solve the above problems or alleviate the impact of the above problems. Utility Model Content

[0008] The utility model provides a metering pressure regulating and analyzing valve group skid, which integrates a measuring unit, a pressure regulating unit and an online analyzing unit into one body through a skid seat, so as to effectively solve the above problems or alleviate the influences brought by the above problems.

[0009] The metering pressure regulating and analyzing valve group skid of the utility model may include a skid seat and a measuring unit, a pressure regulating unit and an online analyzing unit all mounted on the skid seat, wherein the measuring unit, the pressure regulating unit and the online analyzing unit are sequentially arranged on the main pipe along the oil and gas fluid conveying direction;

[0010] The measuring unit is used to measure the flow rate of the oil and gas fluid, the pressure regulating unit is used to regulate the oil and gas fluid to a preset pressure, and the online analysis unit is used to detect and analyze the components and physicochemical properties of the oil and gas fluid.

[0011] In one embodiment, the measuring unit comprises a filter and a flow meter, and the filter is located at an upstream end of the flow meter.

[0012] In one embodiment, the pressure regulating unit includes a safety cut-off valve, a monitoring valve and an electric regulating valve which are sequentially arranged on the main pipe, wherein the safety cut-off valve is used to cut off the flow of oil and gas fluid in an emergency, the monitoring valve is used to monitor the pressure changes of the oil and gas fluid in real time, and the electric regulating valve is used to control the pressure of the oil and gas fluid.

[0013] In one embodiment, the online analysis unit uses an online analyzer for detection, and the online analyzer includes one or more of a spectrum analyzer, a gas online analyzer, and a chemical composition analyzer.

[0014] In one embodiment, the valve group skid further includes a safety venting unit, which is connected to the main pipe between the pressure regulating unit and the online analysis unit, and is used to vent an overpressure portion in the main pipe.

[0015] In one embodiment, the safety venting unit comprises a first venting pipe connected to the main pipe, and the first venting pipe is provided with an automatically controlled venting ball valve and a venting safety valve.

[0016] In one embodiment, the safety venting unit comprises a second venting pipe connected to the main pipe, and the second venting pipe is provided with a manual venting ball valve and a manual venting check valve.

[0017] In one embodiment, the valve group skid further includes a bypass unit arranged in parallel with the measuring unit and the pressure regulating unit, the bypass unit includes a bypass pipe connected in parallel with the main pipe, and the bypass pipe is sequentially provided with a bypass inlet ball valve, a bypass check valve and a bypass outlet ball valve.

[0018] In one embodiment, the valve group skid further includes an instrument valve group unit for collecting pressure data in real time, and the instrument valve group unit includes a pressure gauge, a pressure transmitter and an instrument valve.

[0019] In one embodiment, the valve group skid further includes an intelligent control unit, and the measuring unit, the pressure regulating unit and the online analysis unit are all electrically connected to the intelligent control unit.

[0020] The metering pressure regulating and analyzing valve group skid provided by the utility model has at least the following beneficial effects compared with the prior art:

[0021] The metering, pressure-regulating and analyzing valve group skid of the utility model integrates the measuring unit, the pressure-regulating unit and the online analyzing unit into one unit through the skid seat, so as to achieve a more compact design, higher operating convenience and more accurate measurement results, thereby improving the accuracy, response speed and safety of the oil and gas fluid medium processing and analysis system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0023] Figure 1 It is a structural schematic diagram of the metering pressure regulating and analyzing valve group skid of the embodiment of the utility model.

[0024] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0025] Reference numerals:

[0026] 1-inlet valve, 2-filter, 3-flow meter, 4-safety shut-off valve, 5-monitoring valve, 6-electric regulating valve, 7-vent ball valve, 8-vent safety valve, 9-manual vent check valve, 10-manual vent ball valve, 11-online analyzer, 12-outlet valve, 13-bypass inlet ball valve, 14-bypass check valve, 15-bypass outlet ball valve, 16-pressure gauge, 17-pressure transmitter, 18-instrument valve, 19 main pipe, 20-skid seat, 21-first vent pipe, 22-second vent pipe, 23-bypass pipe. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, the metering pressure regulating and analyzing valve group skid of the utility model may include a skid seat 20 and a measuring unit, a pressure regulating unit and an online analyzing unit all mounted on the skid seat 20, and the measuring unit, the pressure regulating unit and the online analyzing unit are sequentially arranged on the main pipe 19 along the oil and gas fluid conveying direction;

[0029] Among them, the measuring unit is used to measure the flow rate of oil and gas fluid, the pressure regulating unit is used to regulate the oil and gas fluid to a preset pressure, and the online analysis unit is used to detect and analyze the components and physicochemical properties of the oil and gas fluid.

[0030] Specifically, the skid seat 20, as the foundation of the entire valve group skid, can be made of high-strength materials with good stability and load-bearing capacity. The design of the skid seat 20 should take into account the convenience of transportation and on-site installation, so that the entire valve group skid can be quickly deployed to the required location.

[0031] The measuring unit is installed on the main pipe 19, located at the initial position where the oil and gas fluid enters the valve group skid, and can measure the flow rate of the oil and gas fluid in real time and accurately; the pressure regulating unit is located after the measuring unit, and can adjust the pressure of the oil and gas fluid to a preset value; the online analysis unit is located at the end of the valve group skid, and can detect and analyze the components and physicochemical properties of the oil and gas fluid. When the oil and gas fluid enters the valve group skid, it first passes through the measuring unit for flow measurement; then the pressure regulating unit adjusts the pressure of the oil and gas fluid according to the preset value; finally, the online analysis unit detects and analyzes the components and physicochemical properties of the oil and gas fluid. During the whole process, each unit works together to ensure the stability and safety of the oil and gas fluid during transportation. It should be noted that the oil and gas fluid can be natural gas.

[0032] The metering, pressure-regulating and analyzing valve group skid of the utility model integrates the measuring unit, the pressure-regulating unit and the online analyzing unit into one body through the skid seat 20, so that the structure of the oil and gas fluid medium processing and analyzing system is more compact, occupies a small area, is convenient for integrated installation, and is easy to operate. There is no need to disassemble and assemble the units, which saves time and cost, can reduce the risk of leakage at the connection, improve the measurement accuracy, and ensure the accuracy of the measurement structure.

[0033] Furthermore, the main pipe 19 is provided with an inlet valve 1 at the initial position where the oil and gas fluid enters the valve group skid, and an outlet valve 12 is provided at the end position where the oil and gas fluid flows out of the valve group skid. The inlet valve 1 and the outlet valve 12 are inlet and outlet switches of the oil and gas fluid when the valve group skid is put into use. The inlet valve 1 and the outlet valve 12 can be manual ball valves or electric control ball valves.

[0034] In one example, the measuring unit includes a filter 2 and a flow meter 3 , and the filter 2 is located at an upstream end of the flow meter 3 .

[0035] Specifically, the filter 2 installed before the flow meter 3 can remove impurities and particles in the oil and gas fluid, protect the flow meter 3, ensure measurement accuracy, reduce maintenance costs and improve the overall performance of the system. The flow meter 3 can be an ultrasonic flow meter, which can meet the measurement accuracy requirement of ±0.5%.

[0036] In one example, the pressure regulating unit includes a safety shut-off valve 4, a monitoring valve 5 and an electric regulating valve 6 which are sequentially arranged on the main pipe 19. The safety shut-off valve 4 is used to cut off the flow of oil and gas fluid in an emergency. The monitoring valve 5 is used to monitor the pressure changes of the oil and gas fluid in real time. The electric regulating valve 6 is used to control the pressure of the oil and gas fluid.

[0037] Specifically, the safety shut-off valve 4 can automatically cut off the flow of oil and gas fluid when the pressure of the main pipe 19 exceeds or falls below the preset safety range, thereby preventing the pipeline system from being damaged or causing safety accidents due to abnormal pressure, and ensuring the safety of the system. The monitoring valve 5 is equipped with a pressure sensor, which can monitor the pressure changes in the main pipe 19 in real time. Once the monitoring valve 5 detects that the pressure in the main pipe 19 deviates from the set normal range, it can send this information to the intelligent control unit through signal transmission. The intelligent control unit can determine how to control the electric control valve 6 to adjust the pressure according to the received pressure signal to maintain the pressure stability in the pipeline system. The electric control valve 6 controls the flow and pressure of the fluid medium by automatically adjusting the opening of the valve. When the intelligent control unit receives the abnormal pressure signal sent by the monitoring valve 5, it will calculate the valve opening that needs to be adjusted, and drive the electric control valve 6 to make corresponding adjustments through the electric actuator.

[0038] In one example, the online analysis unit uses an online analyzer 11 for detection, and the online analyzer 11 includes one or more of a spectrum analyzer, a gas online analyzer, and a chemical composition analyzer.

[0039] Specifically, the online analysis unit is installed on the main pipe 19 through an online analyzer 11 for detection. The online analyzer 11 can be one or more of a spectrum analyzer, a gas online analyzer, and a chemical composition analyzer. The online analyzer 11 can also be other analyzers. The corresponding analyzer can be set according to the specific detection items. The online analysis unit can set the corresponding online analyzer 11 for online detection of natural gas components, hydrogen sulfide, water dew point and other parameters.

[0040] In one example, the valve group skid further includes a safety venting unit, which is connected to the main pipe 19 between the pressure regulating unit and the online analysis unit, and is used to vent the overpressure portion in the main pipe 19. The function of the safety venting unit is to vent the overpressure portion when the internal pressure of the main pipe 19 exceeds the set value, so as to prevent equipment damage or safety accidents.

[0041] In one example, the safety venting unit includes a first venting pipe 21 connected to the main pipe 19, and the first venting pipe 21 is provided with an automatically controlled venting ball valve 7 and a venting safety valve 8. The venting ball valve 7 is used to open the automatic venting pipeline so that the venting safety valve 8 can perform an automatic venting operation. When the pressure in the pipe exceeds the preset value of the venting safety valve 8, the venting safety valve 8 automatically opens, vents the overpressure part, and then the venting safety valve 8 automatically closes.

[0042] In one example, the safety venting unit includes a second venting pipe 22 connected to the main pipe 19, and a manual venting ball valve 10 and a manual venting check valve 9 are provided on the second venting pipe 22. The manual venting ball valve 10 is used for manual venting, and the manual venting check valve 9 prevents the oil and gas fluid from flowing back during manual venting. The second venting pipe 22 is connected in parallel with the first venting pipe 21, and the second venting pipe 22 can be manually vented when the first venting pipe 21 is under maintenance or the venting safety valve 8 fails.

[0043] In one example, the valve group skid also includes a bypass unit arranged in parallel with the measuring unit and the pressure regulating unit, the bypass unit includes a bypass pipe 23 connected in parallel to the main pipe 19, and the bypass pipe 23 is sequentially provided with a bypass inlet ball valve 13, a bypass check valve 14 and a bypass outlet ball valve 15.

[0044] Specifically, the bypass unit is a backup channel when the measuring unit and the pressure regulating unit are under maintenance. The bypass pipe 23 is connected in parallel with the main pipe 19, so that when the measuring unit and the pressure regulating unit on the main pipe 19 are under maintenance and the flow is blocked, the oil and gas fluid can flow through the bypass pipe 23. The bypass inlet ball valve 13 and the bypass outlet ball valve 15 are used to control the switch of the bypass pipeline, and the bypass check valve 14 allows the oil and gas fluid to flow only in one direction to prevent backflow. The bypass inlet ball valve 13 and the bypass outlet ball valve 15 can be manual ball valves or electric control ball valves.

[0045] In one example, the valve group skid further includes an instrument valve group unit for real-time pressure data collection, and the instrument valve group unit includes a pressure gauge 16, a pressure transmitter 17, and an instrument valve 18. The pressure gauge 16 and the pressure transmitter 17 are used to monitor and collect the pressure data in the pipe in real time, and the instrument valve 18 is used to control the activation of the pressure gauge 16 and the pressure transmitter 17, which is convenient for the maintenance or replacement of the pressure gauge 16 and the pressure transmitter 17.

[0046] In one example, the valve group skid further includes an intelligent control unit, and the measuring unit, the pressure regulating unit and the online analysis unit are all electrically connected to the intelligent control unit.

[0047] Specifically, the intelligent control unit is electrically connected to other units of the valve group skid (including a measuring unit, a pressure regulating unit, an online analysis unit, a safety venting unit, a bypass unit, and an instrument valve group unit), and the intelligent control unit can realize automatic control of the valve group skid.

[0048] In order to better understand the present invention, the operation process of applying the metering pressure regulating and analyzing valve group skid to natural gas is further explained in conjunction with the accompanying drawings.

[0049] Natural gas enters from the inlet valve 1, is filtered by the filter 2, and then is measured by the flow meter 3. The flow meter 3 should meet the measurement accuracy requirement of ±0.5%, and the flow rate of natural gas should not be higher than 25m / s. Then, the pressure regulating unit composed of the safety cut-off valve 4, the monitoring valve 5, and the electric regulating valve 6 automatically adjusts the pressure to the preset pressure; the venting safety valve 8 sets the venting pressure for automatic venting at overpressure; the corresponding online analyzer 11 can be used to detect parameters such as natural gas components, hydrogen sulfide, and water dew point online; the bypass unit is used as a backup for equipment maintenance; the instrument valve group unit collects pressure data in real time and transmits it to the intelligent control unit. The intelligent control unit drives the pressure regulating unit and the measuring unit according to the set parameters, and continuously monitors and feeds back the real-time flow data to maintain the stability of the pressure and flow in the pipe, forming a closed-loop management. The operator can also monitor the entire process through the visual operation interface and perform manual intervention when necessary.

[0050] In summary, the beneficial effects of the metering pressure regulating and analyzing valve group skid of the utility model include:

[0051] The metering, pressure regulating and analyzing valve group skid of the utility model integrates the measuring unit, pressure regulating unit, safety venting unit, online analysis unit, bypass unit and instrument valve group unit into an integrated design, and combines them on a skid seat to form an integrated skid-mounted device with pressure regulation function, flow measurement function, online analysis function, bypass function and safety venting function. It can improve the system integration, reduce the installation space, reduce the maintenance cost and improve the measurement accuracy. Moreover, the intelligent closed-loop management through the intelligent control unit can achieve safety, efficiency and energy saving, and has broad market application prospects.

[0052] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A metering pressure regulating and analyzing valve group skid, characterized in that: The valve group skid comprises a skid seat and a measuring unit, a pressure regulating unit and an online analysis unit which are all mounted on the skid seat, wherein the measuring unit, the pressure regulating unit and the online analysis unit are sequentially arranged on the main pipe along the oil and gas fluid conveying direction; The measuring unit is used to measure the flow rate of the oil and gas fluid, the pressure regulating unit is used to regulate the oil and gas fluid to a preset pressure, and the online analysis unit is used to detect and analyze the components and physicochemical properties of the oil and gas fluid.

2. The metering pressure regulating and analyzing valve group skid according to claim 1 is characterized in that: The measuring unit includes a filter and a flow meter, and the filter is located at an upstream end of the flow meter.

3. The metering pressure regulating and analyzing valve group skid according to claim 1 is characterized in that: The pressure regulating unit includes a safety cut-off valve, a monitoring valve and an electric regulating valve which are sequentially arranged on the main pipe. The safety cut-off valve is used to cut off the flow of oil and gas fluid in an emergency. The monitoring valve is used to monitor the pressure changes of the oil and gas fluid in real time. The electric regulating valve is used to control the pressure of the oil and gas fluid.

4. The metering pressure regulating and analyzing valve group skid according to claim 1 is characterized in that: The online analysis unit uses an online analyzer for detection, and the online analyzer includes one or more of a spectrum analyzer, a gas online analyzer and a chemical composition analyzer.

5. The metering pressure regulating and analyzing valve group skid according to any one of claims 1 to 4, characterized in that: The valve group skid further includes a safety venting unit, which is connected to the main pipe between the pressure regulating unit and the online analysis unit, and is used to vent an overpressure portion in the main pipe.

6. The metering pressure regulating and analyzing valve group skid according to claim 5 is characterized in that: The safety venting unit comprises a first venting pipe connected to the main pipe, and the first venting pipe is provided with an automatically controlled venting ball valve and a venting safety valve.

7. The metering pressure regulating and analyzing valve group skid according to claim 5 is characterized in that: The safety venting unit comprises a second venting pipe connected to the main pipe, and the second venting pipe is provided with a manual venting ball valve and a manual venting check valve.

8. The metering pressure regulating and analyzing valve group skid according to any one of claims 1 to 4, characterized in that: The valve group skid also includes a bypass unit arranged in parallel with the measuring unit and the pressure regulating unit. The bypass unit includes a bypass pipe connected in parallel with the main pipe. A bypass inlet ball valve, a bypass check valve and a bypass outlet ball valve are sequentially arranged on the bypass pipe.

9. The metering pressure regulating and analyzing valve group skid according to any one of claims 1 to 4, characterized in that: The valve group skid further comprises an instrument valve group unit for collecting pressure data in real time, and the instrument valve group unit comprises a pressure gauge, a pressure transmitter and an instrument valve.

10. The metering pressure regulating and analyzing valve group skid according to any one of claims 1 to 4, characterized in that: The valve group skid further comprises an intelligent control unit, and the measuring unit, the pressure regulating unit and the online analysis unit are all electrically connected to the intelligent control unit.

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