Gas pipeline temperature and pressure monitoring and regulating valve

Abstract

The utility model belongs to valve technical field, concretely relates to a gas pipeline temperature and pressure monitoring control valve, including left valve body, right valve body and the ball core with V -shaped opening, ball core is located in right valve body, left valve body and right valve body are connected through connecting bolt, and the watchcase is arranged on right valve body top, and the watchcase is arranged with executing mechanism, and the output end of executing mechanism is connected with ball core one end, and the other end of ball core is rotatably connected with right valve body inner wall. The V-shaped opening on the ball core and the flow passage of the valve can form a sector area. During the rotation, the cross-sectional area of the flow passage can be changed to accurately regulate the flow of gas. When the ball core is rotating to close, the ball core can contact the sealing ring to compress the two compression springs. The outer wall of the ball core is in close contact with the sealing ring through the pressure of the spring, improving the sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a gas pipeline temperature and pressure monitoring and control valve. Background Technology

[0002] Natural gas pipelines are pipelines that transport natural gas from extraction sites or processing plants to urban gas distribution centers or industrial users. Transporting natural gas via pipelines is the primary method for large-scale land-based natural gas transportation. As a core infrastructure for urban energy transmission, the safe operation of gas pipelines is directly related to public safety, environmental protection, and socio-economic stability. Gas valves control the flow of gas and regulate pressure to ensure the stable operation of gas-using equipment. However, existing valves have low adjustment precision, affecting the stability of gas pipeline transmission. Utility Model Content

[0003] Therefore, this utility model aims to solve the problem of low valve adjustment accuracy in the prior art, which affects the stability of gas pipeline transportation.

[0004] Therefore, the technical solution adopted is a gas pipeline temperature and pressure monitoring and control valve of this utility model, which includes a left valve body, a right valve body and a ball core with a V-shaped opening. The ball core is located in the right valve body. The left valve body and the right valve body are connected by connecting bolts. A gauge housing is provided above the right valve body. An actuator is provided inside the gauge housing. The output end of the actuator is connected to one end of the ball core, and the other end of the ball core is rotatably connected to the inner wall of the right valve body.

[0005] Preferably, a groove is provided in the end face of the left valve body, and two compression springs are provided on the bottom wall of the groove. A sealing seat is provided on the compression spring, and a sealing ring is provided on the sealing seat. The ball core contacts the sealing ring.

[0006] Preferably, the actuator is an electric actuator, a pneumatic actuator, or an electro-hydraulic actuator.

[0007] Preferably, the bottom end of the instrument housing is connected to the right valve body via an actuator base. The output end of the actuator extends into the actuator base and is connected to one end of the connecting shaft. The other end of the connecting shaft is connected to one end of the sealing shaft. The other end of the sealing shaft extends into the right valve body and is connected to the upper end of the ball core. The lower end of the ball core is connected to one end of the positioning shaft via an adjusting screw. The other end of the positioning shaft passes through the bottom wall of the right valve body and is connected to the first O-ring seal. A sealing pressure plate is provided on the first O-ring seal.

[0008] Preferably, a sealing sleeve is installed on the sealing shaft, and multiple second O-rings are provided between the sealing shaft and the sealing sleeve. The outer ring of the self-lubricating bearing is connected to the sealing sleeve, and the inner ring of the self-lubricating bearing is connected to the sealing shaft.

[0009] Preferably, a wire retaining ring and a third O-ring are provided on the circumferential outer wall of the sealing ring.

[0010] Preferably, a lead wire connector is provided at the bottom of the actuator base.

[0011] Preferably, temperature and pressure sensors are respectively installed on the left valve body and the right valve body.

[0012] The present invention has the following advantages: the V-shaped opening on the ball core and the flow channel of the valve can form a fan-shaped area. During the rotation, the cross-sectional area of ​​the flow channel can be changed to achieve precise regulation of the gas. When the ball core is rotated to close, it can contact the sealing ring and squeeze the two compression springs. The pressure of the springs makes the outer wall of the ball core in close contact with the sealing ring, thus improving the sealing performance.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0014] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 Enlarged view of point A;

[0018] The components are as follows: 1. Left valve body; 2. Right valve body; 3. Ball core; 4. Connecting bolt; 5. Gauge housing; 6. Groove; 7. Compression spring; 8. Sealing seat; 9. Sealing ring; 10. Actuator base; 11. Connecting shaft; 12. Sealing shaft; 13. Positioning shaft; 14. Adjusting screw; 15. First O-ring seal; 16. Sealing pressure plate; 17. Sealing sleeve; 18. Second O-ring seal; 19. Self-lubricating bearing; 20. Wire retaining ring; 21. Third O-ring seal; 22. Lead wire connector; 23. Temperature and pressure sensor. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] This utility model provides a gas pipeline temperature and pressure monitoring and control valve, such as... Figure 1-2 As shown, the valve includes a left valve body 1, a right valve body 2, and a ball core 3 with a V-shaped opening. The ball core 3 is located inside the right valve body 2. The left valve body 1 and the right valve body 2 are connected by connecting bolts 4. A gauge housing 5 is installed above the right valve body 2, and an actuator is installed inside the gauge housing 5. The output end of the actuator is connected to one end of the ball core 3, and the other end of the ball core 3 is rotatably connected to the inner wall of the right valve body 2. The overall structure of the valve adopts a wafer flange type V-type ball valve with an integral side-mounted structure, which has strong structural rigidity and is not prone to deformation and external leakage. The valve seat uses PTFE soft sealing according to the requirements of the medium. PTFE valve seats or reinforced PTFE valve seats have strong wear resistance, good sealing performance, corrosion resistance, and a wide range of applications.

[0024] A groove 6 is provided inside the end face of the left valve body 1. Two compression springs 7 are provided on the bottom wall of the groove 6. A sealing seat 8 is provided on the compression spring 7. A sealing ring 9 is provided on the sealing seat 8. The ball core 3 contacts the sealing ring 9. The actuator is an electric actuator, a pneumatic actuator, or an electro-hydraulic actuator, which can precisely control the rotation opening of the ball core 3. The bottom end of the housing 5 is connected to the right valve body 2 through the actuator base 10. The output end of the actuator extends into the actuator base 10 and is connected to one end of the connecting shaft 11. The other end of the connecting shaft 11 is connected to one end of the sealing shaft 12. The other end of the sealing shaft 12 extends into the right valve body 2 and is connected to the upper end of the ball core 3. The lower end of the ball core 3 is connected to one end of the positioning shaft 13 through the adjusting screw 14. The other end of the positioning shaft 13 passes through the bottom wall of the right valve body 2 and is connected to the first O-ring seal 15. A sealing pressure plate 16 is provided on the first O-ring seal 15 to improve the sealing performance. A sealing sleeve 17 is installed on the sealing shaft 12. Multiple second O-rings 18 are provided between the sealing shaft 12 and the sealing sleeve 17. The outer ring of the self-lubricating bearing 19 is connected to the sealing sleeve 17, and the inner ring of the self-lubricating bearing 19 is connected to the sealing shaft 12. The self-lubricating bearing 19 has high load-bearing capacity and a low coefficient of friction, reducing valve opening and closing resistance and greatly increasing mechanical torque. A wire retaining ring 20 and a third O-ring 21 are provided on the circumferential outer wall of the sealing ring 9 to improve its sealing performance. A lead wire connector 22 is provided at the bottom of the actuator base 10. Temperature and pressure sensors 23 are respectively installed on the left valve body 1 and the right valve body 2 for real-time monitoring of inlet or outlet gas pressure and temperature.

[0025] The working principle and beneficial technical effects of the above technical solution are as follows: The V-shaped opening on the ball core 3 and the flow channel of the valve can form a fan-shaped area. During the rotation, the cross-sectional area of ​​the flow channel can be changed, resulting in precise regulation of the gas. When the ball core 3 is rotated to close, the ball core 3 can contact the sealing ring 9 and squeeze the two compression springs 7. The pressure of the springs makes the outer wall of the ball core 3 in close contact with the sealing ring 9, thereby improving the sealing performance.

[0026] An integrated control board (PCB) is fixedly mounted inside the casing 5. This board includes:

[0027] Signal acquisition module: Connected to the inlet temperature and pressure sensor and the outlet temperature and pressure sensor via 485 communication, used to acquire sensor data.

[0028] Data processing unit: used to process the collected temperature and pressure data (including preliminary calculation of pressure difference ΔP = P_in - P_out).

[0029] Local control logic: Built-in simple control algorithms (such as threshold judgment, basic PID) provide basic protection functions (such as overpressure emergency cut-off) when communication is interrupted.

[0030] Communication module: Supports wired (such as RS485, Ethernet) and wireless (such as 4G / 5G, NB-IoT, LoRaWAN, WiFi) communication protocols, used to upload the collected and processed data (inlet and outlet temperature and pressure data, ΔP, valve opening status, alarm status, etc.) to the cloud server system, and receive valve opening control commands from the cloud server system.

[0031] Actuator drive module: Electrically connected to the actuator, it drives the actuator to move according to the received control commands (from the cloud and local logic) to precisely adjust the rotation angle of the ball (i.e., the valve opening).

[0032] Power module: Provides power (external) to the PCB motherboard, sensors, and actuators (or parts thereof).

[0033] Protective housing / junction box: Used to protect the PCB motherboard and internal wiring, with corresponding protection level.

[0034] Working principle:

[0035] Data acquisition: Inlet temperature sensor (T_in), outlet temperature sensor (T_out), inlet pressure sensor (P_in), and outlet pressure sensor (P_out) monitor the status parameters of pipeline gas in real time.

[0036] Data processing and uploading: Sensor signals are transmitted to the integrated control motherboard (PCB). The data processing unit on the motherboard processes the signals (such as AD conversion, filtering, unit conversion, and calculation of ΔP), and then uploads the processed data (including T_in, P_in, P_out, ΔP, current opening, etc.) to the cloud server system through the communication module.

[0037] Cloud-based analysis and decision-making: The cloud server system receives data and utilizes cloud computing capabilities to run complex control algorithms. This algorithm comprehensively considers the target pressure setpoint, real-time P_in, P_out, ΔP, T_in (temperature-dependent density and flow rate calculations), historical data, and even other relevant system parameters to calculate the optimal valve opening command. Simultaneously, the system continuously monitors ΔP.

[0038] When ΔP < 0 (i.e., P_out > P_in) is detected, it is determined that there is a risk of backflow.

[0039] When a drastic pressure fluctuation exceeding the safe range is detected, it is determined that there is a risk of pressure runaway.

[0040] Command Issuance and Execution: The cloud sends the calculated opening command (or emergency command, such as "quick close") back to the PCB mainboard of the valve body via the communication network. After receiving the command, the actuator drive module on the mainboard drives the actuator to rotate the ball of the V-type ball valve precisely to the specified opening degree.

[0041] Pressure control: By dynamically adjusting the opening of the V-type ball valve, the flow area and flow rate of the flow channel are changed, thereby precisely controlling the valve outlet pressure (P_out) to stabilize near the target value, and achieving stable pipeline natural gas pressure.

[0042] Anti-backflow: Once the cloud system detects a backflow risk signal with ΔP<0, it will immediately generate and issue a "quick shut-off" command. After receiving the command, the valve actuator drives the ball to rotate rapidly to the fully closed position (the V-shaped port completely blocks the flow path). Utilizing the excellent shut-off and sealing performance of the V-shaped ball valve, it quickly prevents gas backflow and avoids over-metering caused by backflow.

[0043] Local emergency response: If communication is interrupted, the local control logic can trigger the actuator to perform safety operations (such as closing the valve or maintaining the current safe opening degree) based on preset safety thresholds (such as P_in being too high, P_out being too low, or ΔP being too negative).

[0044] Beneficial effects:

[0045] High-precision pressure control: Utilizing real-time data of the pressure difference ΔP between the front and rear ends and the inlet temperature T_in, combined with advanced control algorithms with powerful cloud computing capabilities, it achieves more precise and faster stable control of the outlet pressure (P_out) than traditional pressure regulation methods.

[0046] Active backflow prevention: Real-time monitoring of ΔP; once a backflow tendency is detected (ΔP<0), the valve is immediately triggered to close quickly, effectively preventing gas backflow accidents and significantly improving safety.

[0047] Remote intelligent monitoring and control: The integrated communication module enables remote real-time monitoring of valve status and pipeline parameters, as well as remote precise control of valve opening, facilitating centralized management and optimization of pipeline network operation.

[0048] Compact structure and high integration: The temperature and pressure sensors and the control motherboard are directly integrated into the valve body to form an integrated intelligent terminal, which simplifies on-site installation and wiring and improves reliability.

[0049] Utilizing the advantages of V-type ball valves: V-type ball valves have good linear regulation characteristics, large flow capacity (at appropriate opening), strong shearing ability (preventing impurities from blocking), and reliable sealing (especially when shut off), making them very suitable for gas pressure regulation and emergency shut-off.

[0050] Data-driven operation and maintenance: Uploaded operational data provides a basis for predictive maintenance, fault diagnosis, and pipeline optimization.

[0051] Optional local redundancy: Local control logic provides basic safety assurance in the event of communication failure.

[0052] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A gas pipeline temperature and pressure monitoring regulating valve, characterized in that, It includes a left valve body (1), a right valve body (2) and a ball core (3) with a V-shaped opening. The ball core (3) is located inside the right valve body (2). The left valve body (1) and the right valve body (2) are connected by connecting bolts (4). A watch case (5) is provided above the right valve body (2). An actuator is provided inside the watch case (5). The output end of the actuator is connected to one end of the ball core (3), and the other end of the ball core (3) is rotatably connected to the inner wall of the right valve body (2).

2. The gas pipeline temperature and pressure monitoring regulating valve according to claim 1, characterized in that, A groove (6) is provided in the end face of the left valve body (1). Two compression springs (7) are provided on the bottom wall of the groove (6). A sealing seat (8) is provided on the compression spring (7). A sealing ring (9) is provided on the sealing seat (8). The ball core (3) is in contact with the sealing ring (9).

3. The gas pipeline temperature and pressure monitoring regulating valve according to claim 1, characterized in that, The actuator is an electric actuator, a pneumatic actuator, or an electro-hydraulic actuator.

4. The gas pipeline temperature and pressure monitoring and control valve according to claim 1, characterized in that, The bottom end of the housing (5) is connected to the right valve body (2) through the actuator base (10). The output end of the actuator extends into the actuator base (10) and is connected to one end of the connecting shaft (11). The other end of the connecting shaft (11) is connected to one end of the sealing shaft (12). The other end of the sealing shaft (12) extends into the right valve body (2) and is connected to the upper end of the ball core (3). The lower end of the ball core (3) is connected to one end of the positioning shaft (13) through the adjusting screw (14). The other end of the positioning shaft (13) passes through the bottom wall of the right valve body (2) and is connected to the first O-ring seal (15). A sealing pressure plate (16) is provided on the first O-ring seal (15).

5. The gas pipeline temperature and pressure monitoring and control valve according to claim 4, characterized in that, A sealing sleeve (17) is installed on the sealing shaft (12), and a plurality of second O-rings (18) are provided between the sealing shaft (12) and the sealing sleeve (17). The outer ring of the self-lubricating bearing (19) is connected to the sealing sleeve (17), and the inner ring of the self-lubricating bearing (19) is connected to the sealing shaft (12).

6. The gas pipeline temperature and pressure monitoring and control valve according to claim 2, characterized in that, A wire retaining ring (20) and a third O-ring (21) are provided on the circumferential outer wall of the sealing ring (9).

7. The gas pipeline temperature and pressure monitoring and control valve according to claim 1, characterized in that, A lead wire connector (22) is provided at the bottom of the actuator base (10).

8. The gas pipeline temperature and pressure monitoring and control valve according to claim 1, characterized in that, Temperature and pressure sensors (23) are respectively installed on the left valve body (1) and the right valve body (2).

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