Petroleum transportation pipeline pressure monitoring system

Abstract

The invention discloses a pressure monitoring system for a petroleum transportation pipeline, which belongs to the technical field of pipeline pressure monitoring equipment and is characterized in that a liquid inlet pipe and a liquid outlet pipe are respectively connected into the petroleum transportation pipeline; a splitter plate is fixed to the joint of the interior of the liquid inlet pipe and the interior of the liquid discharging pipe. A splitter pipe penetrates through the middle of the splitter plate. The monitoring pipe is provided with a movable plate, a fixed plate and a pressure detection ring; a pipeline section pointing plate is rotationally arranged in the pressure detection ring; the top of the moving plate is connected with the top of the monitoring pipe through an elastic piece; two lifting rods are arranged at the top of the fixed plate in a sliding manner; two ends of the lifting rod are fixedly connected with the bottom of the movable plate and the pressure detection ring respectively; the lifting rod is in transmission connection with a first pressure indicating piece; an arc-shaped drainage plate is fixed to the center of the bottom of the pipeline section pointing plate. The rotating shaft is in transmission connection with a second pressure indicating piece. The system can quickly judge the internal pressure state of the pipeline, determine the blockage or fracture condition of the pipeline and quickly position the corresponding pipeline section.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline pressure monitoring equipment, and particularly relates to an oil transportation pipeline pressure monitoring system. BACKGROUND

[0002] As an important energy transportation channel, oil transportation pipelines play a crucial role in ensuring the stability and safety of oil supply. However, due to its long distance, complex environment and the influence of fluid properties, the pipeline often faces the risk of blockage and leakage during operation. Blockage is usually caused by the accumulation of sediments, corrosion inside and outside the pipeline, or other impurities, which blocks the flow of fluid in the pipeline, affects the transportation efficiency, and even causes pressure abnormalities. Leakage problem directly threatens the safety of the pipeline, not only causing energy loss, but also causing serious accidents such as fire and environmental pollution. Therefore, for the safe operation of oil transportation pipelines, continuous and effective monitoring is particularly important. As an important means of pipeline health examination, pressure monitoring can timely detect abnormal pressure fluctuations in the pipeline, providing data support for fault prediction and prevention. By monitoring the pressure in the pipeline in real time, the working state of the pipeline can be accurately grasped, and potential risks of fluid flow obstruction or leakage can be found in time, so that appropriate emergency measures can be taken. This not only reduces the loss caused by blockage or leakage, but also greatly improves the efficiency and safety of the pipeline. Therefore, the application of pipeline pressure monitoring technology is not only an important means to ensure the safety of oil pipelines, but also an effective way to optimize the transportation process and reduce operating costs.

[0003] The prior art usually realizes real-time monitoring of pipeline pressure by connecting a fluid pressure gauge, which can quickly obtain pressure data inside the pipeline. These data can reflect the fluid dynamic conditions of the pipeline, thereby providing support for pipeline fault warning. However, although the fluid pressure gauge can provide certain monitoring capability, its limitations cannot be ignored. The most important problem is that the pressure gauge can usually only provide pressure data at a certain position of the pipeline, and it is difficult to determine which section of the pipeline has a problem, which makes it very difficult to locate the abnormal position and unable to respond quickly and effectively. SUMMARY

[0004] The purpose of the present application is to provide an oil transportation pipeline pressure monitoring system that can quickly determine the pressure state inside the pipeline and determine the pipeline blockage or rupture and quickly locate the corresponding pipeline section.

[0005] The technical solution of the present application is: The utility model provides a kind of petroleum transportation pipeline pressure monitoring system, including mutually interconnected liquid inlet pipe, monitoring pipe and liquid outlet pipe;The liquid inlet pipe and liquid outlet pipe are connected to petroleum transportation pipeline respectively;The top end of the monitoring pipe is closed;The junction of the inside of the liquid inlet pipe and liquid outlet pipe is fixed with shunt plate, and the middle part of the shunt plate is passed through shunt pipe; The inside of the monitoring pipe is provided with moving plate, fixed plate and pressure detection ring along the length direction;The pipe section pointing plate is rotatably arranged in the ring of the pressure detection ring by rotating shaft;The fixed plate is fixedly connected with the monitoring pipe;The top of the moving plate is connected with the top of the monitoring pipe by elastic member;The top of the fixed plate is at least passed through and slidably provided with two lifting rods;The two ends of the lifting rod are fixedly connected with the bottom of the moving plate and the pressure detection ring respectively;The lifting rod is drivingly connected with first pressure indicating element, for indicating lifting state; The bottom center of the pipe section pointing plate is fixed with arc-shaped drainage plate, and the arc surface is downward;One end of the shunt pipe forms shunt passage with liquid inlet pipe and arc-shaped drainage plate, and merges into liquid outlet pipe with the other end of shunt pipe;The rotating shaft is drivingly connected with second pressure indicating element, for indicating pipe section pointing plate deflection state.

[0006] Preferably, the first pressure indicating element includes first indicating plate and indicating rod;The middle part of the fixed plate is provided with through slot;The top of the fixed plate is rotatably provided with gear ring;The ring of the gear ring is fixedly provided with mounting plate. One end of the indicating rod is fixedly connected with the first indicating plate by passing through the top of the monitoring pipe, and the other end is fixedly connected with the mounting plate;The top of the fixed plate is rotatably provided with at least two gears, and the gears are engaged with the gear ring;The lifting rod is screw rod;The screw rod is rotatably matched with the fixed plate and threadedly matched with the gear by passing through the fixed plate and gear;The two ends of the screw rod are fixedly connected with the bottom of the moving plate and the top of the pressure detection ring respectively.

[0007] Preferably, the second pressure indicating element includes second indicating plate and adjusting nut;One end of the rotating shaft passes through the monitoring pipe and is fixedly connected with the second indicating plate;The second indicating plate is fixedly connected with the adjusting nut.

[0008] Preferably, the elastic member is spring.

[0009] Preferably, it further includes wireless detection module;The wireless detection module includes wireless transceiver module and two angle sensors electrically connected with the wireless transceiver module. The two angle sensors are drivingly connected with indicating rod and rotating shaft respectively, and the positive and negative angle deviation values obtained by monitoring are sent to upper computer for monitoring by wireless communication through wireless transceiver module.

[0010] Preferably, the two ends of the liquid inlet pipe and the liquid outlet pipe are welded with flanges for connecting with the oil transportation pipeline.

[0011] Preferably, the arc-shaped guide plate is an arc-shaped spherical plate; the shunt plate is a circular plate; the distance between the shunt pipe and the liquid inlet pipe is equal to the distance between the top of the shunt plate and the top of the arc-shaped guide plate.

[0012] A method for using the oil transportation pipeline pressure monitoring system, comprising the following steps: One end of the liquid inlet pipe and the liquid outlet pipe is connected with the oil transportation pipeline respectively; by rotating the second pressure indicator, oil is sent into the monitoring pipe, the position of the moving plate is determined, the state of the first pressure indicator is determined, the current height of the moving plate is determined, and reset adjustment is realized; Under the condition of stable oil transportation, the second pressure indicator is rotated back to zero position, the arc surface of the arc-shaped guide plate is downward, one end of the shunt pipe forms a shunt passage with the liquid inlet pipe and the arc-shaped guide plate, and oil is combined with the oil in the shunt pipe through the shunt passage and then enters the liquid outlet pipe for oil transportation; Enter the monitoring stage: When the position of the moving plate is moved as determined by the first pressure indicator, the pressure change in the pipeline is determined, wherein when the position of the moving plate is lowered, the oil transportation pipeline is in a leakage state; when the position of the moving plate is raised, the oil transportation pipeline is in a resistance or blockage pressure rise state; The deflection state of the pipeline section pointing plate is determined according to the second pressure indicator, and the pipeline section in the leakage or blockage pressure rise state is determined: In the leakage state, the second pressure indicator is deflected to the right and then reset, that is, one end of the pipeline section pointing plate in the direction of the liquid inlet pipe is deflected upward, and the other end is deflected downward, so that the pipeline section of the oil transportation pipeline connected with the liquid outlet pipe leaks; in the leakage state, the second pressure indicator is deflected to the left and then reset, that is, one end of the pipeline section pointing plate in the direction of the liquid inlet pipe is deflected downward, and the other end is deflected upward, so that the pipeline section of the oil transportation pipeline connected with the liquid inlet pipe leaks, and early warning and crack or pipeline connection are realized. In the pressure rise state, the second pressure indicator is deflected to the right and then reset, that is, one end of the pipeline section pointing plate in the direction of the liquid inlet pipe is deflected upward, and the other end is deflected downward, so that the pipeline section of the oil transportation pipeline connected with the liquid inlet pipe generates resistance or blockage; in the pressure rise state, the second pressure indicator is deflected to the left and then reset, that is, one end of the pipeline section pointing plate in the direction of the liquid inlet pipe is deflected upward, and the other end is deflected downward, so that the pipeline section of the oil transportation pipeline connected with the liquid outlet pipe generates resistance or blockage, and early warning and pipeline section checking are realized.

[0013] Compared with the prior art, the present application has the following advantages: The present application provides a kind of petroleum transportation pipeline pressure monitoring system, the system is based on the structure of liquid inlet pipe, monitoring pipe and liquid outlet pipe communication, and realizes the shunt to the liquid flowing in petroleum transportation pipeline by combining arc flow guide plate, shunt pipe and shunt plate, based on the flow velocity variation of branch liquid passing through arc flow guide plate, it is converted to be used to indicate the liquid pressure variation of two pipeline sections at both ends of pressure monitoring system, by mechanical structure, the pressure variation generated by the liquid flowing in petroleum transportation pipeline is converted into the change of two indicating members, respectively realizes the judgment of pressure increase and pressure decrease, i.e. the state judgment of blockage or leakage, and the determination of corresponding pipeline section, facilitate subsequent rapid pipeline defect positioning investigation, and effective emergency measures are provided to provide guarantee. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall three-dimensional structure schematic diagram of the petroleum transportation pipeline pressure monitoring system of the present application.

[0015] Figure 2 It is the internal structure schematic diagram of the petroleum transportation pipeline pressure monitoring system of the present application.

[0016] Figure 3 It is the internal structure schematic diagram of the petroleum transportation pipeline pressure monitoring system of the present application.

[0017] Figure 4 It is the half-cut main view of the petroleum transportation pipeline pressure monitoring system of the present application.

[0018] Figure 5 It is the internal structure schematic diagram of the petroleum transportation pipeline pressure monitoring system of the present application.

[0019] In the figure: 1, liquid inlet pipe;2, monitoring pipe;3, second indicating plate;4, first indicating plate;5, adjusting nut;6, liquid outlet pipe;7, shunt pipe;8, shunt plate;9, arc flow guide plate;10, pipeline section pointing plate;11, pressure detection ring;12, screw;13, gear;14, fixed plate;15, spring;16, moving plate;17, indicating plate;18, gear ring;19, indicating rod. DETAILED DESCRIPTION

[0020] The following will be combined Figures 1-5The specific embodiments of the present application are described in detail. In the description of the application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0021] The terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features; in the description of the application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0022] Embodiment 1 The prior art usually monitors the pressure of the pipeline in real time by installing a fluid pressure gauge, so as to quickly obtain the pressure data in the pipeline. These data can reflect the dynamic changes of the fluid in the pipeline, helping to give early warning of failure. However, although the fluid pressure gauge has a certain monitoring capability, its limitations are also obvious. The main problem is that the pressure gauge usually only provides pressure data at a single location, making it difficult to accurately determine which section of the pipeline is abnormal. This makes it very difficult to locate the fault position when a problem occurs in the pipeline system, resulting in a slow troubleshooting process and the inability to quickly take effective emergency measures. Therefore, as shown in the prior art, Figures 1-5 The present application provides a petroleum transportation pipeline pressure monitoring system, which comprises a liquid inlet pipe 1, a monitoring pipe 2 and a liquid outlet pipe 6 connected to each other; the liquid inlet pipe 1 and the liquid outlet pipe 6 are connected to the petroleum transportation pipeline; the top end of the monitoring pipe 2 is closed; a shunt plate 8 is fixed at the connection between the liquid inlet pipe 1 and the liquid outlet pipe 6 inside; and a shunt pipe 7 passes through the middle of the shunt plate 8.

[0023] As shown in Figure 2 , Figure 3 and Figure 4 , in order to make the internal structure clearer, Figure 2 , Figure 3 and Figure 4 cut the pipeline in half respectively to show the internal structure, Figure 2 and Figure 3 are structure diagrams from two different angles, Figure 4It is a half sectional view. The inner part of the monitoring pipe 2 is provided with a moving plate 16, a fixed plate 14 and a pressure detection ring 11 along the length direction; the inner ring of the pressure detection ring 11 is provided with a pipe section pointing plate 10 which is rotatably arranged by a rotating shaft; the top of the moving plate 16 is connected with the top of the monitoring pipe 2 by an elastic member which is a spring 15; the top of the fixed plate 14 is provided with two lifting rods which are at least threaded and slid; the two ends of the lifting rod are fixedly connected with the bottom of the moving plate 16 and the pressure detection ring 11 respectively; the lifting rod is drivingly connected with a first pressure indicating member for indicating the lifting state. The above-mentioned pressure changes are all based on the liquid flow rate of the shunt section and are changed as shown in the figure, specifically, a part of the liquid is shunted as the basis for pressure monitoring, specifically, the bottom center of the pipe section pointing plate 10 is fixedly provided with an arc-shaped drainage plate 9 which is downwardly curved; one end of a shunt pipe 7 and the liquid inlet pipe 1 and the arc-shaped drainage plate 9 form a shunt passage which is combined with the other end of the shunt pipe 7 into the liquid outlet pipe 6; the rotating shaft is drivingly connected with a second pressure indicating member for indicating the deflection state of the pipe section pointing plate 10. Figure 2

[0024] Further, as shown in the figure, the movement of the moving plate 16 is converted into the rotation of the indicating member by a mechanical structure, specifically, the first pressure indicating member comprises a first indicating plate 4 and an indicating rod 19; a through slot is formed in the middle of the fixed plate 14; the top of the fixed plate 14 is rotatably provided with a tooth ring 18; the inner ring of the tooth ring 18 is fixedly provided with a mounting plate 17; one end of the indicating rod 19 is threaded through the top of the monitoring pipe 2 and is fixedly connected with the first indicating plate 4, and the other end is fixedly connected with the mounting plate 17; the top of the fixed plate 14 is rotatably provided with two gears 13 at least; the gears 13 are engaged with the tooth ring 18; the lifting rod is a screw rod 12; the screw rod 12 is threaded through the fixed plate 14 and the gear 13 and is rotatably matched with the fixed plate 14 and is threadedly matched with the gear 13; the two ends of the screw rod 12 are fixedly connected with the bottom of the moving plate 16 and the top of the pressure detection ring 11 respectively. Figure 2

[0025] As shown in the figures, the second pressure indicating member comprises a second indicating plate 3 and an adjusting nut 5; one end of the rotating shaft is threaded through the monitoring pipe 2 and is fixedly connected with the second indicating plate 3; the second indicating plate 3 is fixedly connected with the adjusting nut 5. In addition, the two ends of the liquid inlet pipe 1 and the liquid outlet pipe 6 are respectively welded with flanges for connecting with the petroleum transportation pipeline. Figure 1 Figure 2

[0026] In order to amplify the swing direction of the pipe section pointing plate 10, the arc-shaped drainage plate 9 connected with the pipe section pointing plate 10 is designed as an arc-shaped spherical plate; the shunt plate 8 is a circular plate; the distance between the shunt pipe 7 and the liquid inlet pipe 1 is equal to the distance between the top of the shunt plate 8 and the arc top of the arc-shaped drainage plate 9.

[0027] In the embodiment, the use method of the petroleum transportation pipeline pressure monitoring system specifically comprises the following steps: ​​​​The one end of the liquid inlet pipe 1 and the liquid outlet pipe 6 is connected to the oil transportation pipeline respectively; under the condition of stable oil transportation, the oil is sent into the monitoring pipe 2 by rotating the second pressure indicating part, the current position of the moving plate 16 is determined, that is, the state of the first pressure indicating part is determined, the current height of the moving plate 16 is determined, and the spring 15 and the liquid in the monitoring pipe 2 realize stable state.

[0028] Under the condition of stable oil transportation, the second pressure indicating part is rotated back to zero position, the arc surface of the arc-shaped diversion plate 9 is downward, one end of the shunt pipe 7 and the liquid inlet pipe 1 and the arc-shaped diversion plate 9 form a shunt channel, and the other end of the shunt pipe 7 is combined into the liquid outlet pipe 6 to carry out oil transportation.

[0029] The monitoring stage is entered: When the position of the moving plate 16 is moved by the first pressure indicating part, the pressure change in the pipeline is determined, wherein when the position of the moving plate 16 is lowered, the oil transportation pipeline is in a leakage state; when the position of the moving plate 16 is raised, the oil transportation pipeline is in a resistance or pressure rise state caused by blockage.

[0030] The deflection state of the pipeline segment pointing plate 10 is determined according to the second pressure indicating part, and the pipeline segment in the leakage or pressure rise state caused by blockage is determined: Under the leakage state, the second pressure indicating part is deflected to the right and reset, that is, one end of the pipeline segment pointing plate 10 in the direction of the liquid inlet pipe 1 is deflected upward, and the other end is deflected downward, so that the pipeline segment of the oil transportation pipeline connected with the liquid outlet pipe 6 leaks; under the leakage state, the second pressure indicating part is deflected to the left and reset, that is, one end of the pipeline segment pointing plate 10 in the direction of the liquid inlet pipe 1 is deflected downward, and the other end is deflected upward, so that the pipeline segment of the oil transportation pipeline connected with the liquid inlet pipe 1 leaks, and the pre-warning and crack or pipeline connection are checked. Under the pressure rise state, the second pressure indicating part is deflected to the right and reset, that is, one end of the pipeline segment pointing plate 10 in the direction of the liquid inlet pipe 1 is deflected upward, and the other end is deflected downward, so that the pipeline segment of the oil transportation pipeline connected with the liquid inlet pipe 1 has resistance or blockage; under the pressure rise state, the second pressure indicating part is deflected to the left and reset, that is, one end of the pipeline segment pointing plate 10 in the direction of the liquid inlet pipe 1 is deflected upward, and the other end is deflected downward, so that the pipeline segment of the oil transportation pipeline connected with the liquid outlet pipe 6 has resistance or blockage, and the pre-warning and pipeline segment checking are realized.

[0031] Wherein, the movement of the moving plate 16 is converted into the rotation of the indicating plate through the transmission structure of the screw rod 12, the gear 13 and the gear ring 18, and the deflection of the pipeline segment pointing plate 10 is also converted into the rotation of the indicating plate, so that the pressure change state is determined by the rotation of the two indicating plates, and the size of the change amount can measure the size of the pressure change.

[0032] Further, the present application can monitor the pressure changes in the pipeline by changing the angles of the first and second indicator plates 4 and 3. Specifically, the wireless detection module includes a wireless transceiver module and two angle sensors electrically connected to the wireless transceiver module. The two angle sensors are respectively connected to the indicator rod 19 and the rotating shaft, and the positive and negative angle deviation values obtained by monitoring are sent to the upper computer through wireless communication for monitoring.

[0033] The present embodiment provides a system for monitoring the pressure changes in the pipeline through mechanical transmission. Specifically, the system is based on the structural design of the connected liquid inlet pipe, monitoring pipe, and liquid outlet pipe, and combines the clever configuration of the arc-shaped diversion plate, shunt pipe, and shunt plate to successfully achieve the shunt function of the fluid in the oil transportation pipeline. In this system, the branch flow of the liquid flows through the arc-shaped diversion plate, and the change of the flow rate directly reflects the pressure change of the liquid in the pipeline. Specifically, the change of the branch flow rate is converted into a signal indicating the pressure change at both ends of the pipeline, which enables the system to monitor the pressure fluctuations in the pipeline in real time. By accurately capturing these flow rate changes, the system can effectively detect pressure abnormalities in the pipeline, providing reliable data support for timely detection of potential problems and fault warning. The system cleverly translates the relationship between liquid flow and pressure change into an index that can be directly measured and monitored, thereby improving the monitoring accuracy and real-time response capability of the oil transportation pipeline.

[0034] The system further converts the pressure changes generated by the flowing liquid in the oil transportation pipeline into physical changes of the two indicators through the transmission of the screw and gear. This conversion method not only accurately reflects the rise and fall of liquid pressure, but also enables the judgment of the blockage or leakage state in the pipeline system. Specifically, the change of the indicator can clearly indicate the pressure rise or drop, and help identify whether the pipeline is blocked or leaked. On this basis, the system can accurately locate the abnormal pipeline section, so that the maintenance personnel can quickly identify the problem area and conduct rapid positioning and troubleshooting. With this function, the fault response time of the pipeline is greatly shortened, ensuring that effective emergency measures can be taken at the initial stage of the problem, reducing the possible losses. This design not only improves the safety of the oil transportation pipeline, but also provides strong technical support for the long-term stable operation of the pipeline.

[0035] The above disclosure is only the preferred specific embodiments of the present application, but the embodiments of the present application are not limited thereto, and any changes that can be thought of by those skilled in the art shall fall within the protection scope of the present application.

Claims

1. An oil transportation pipeline pressure monitoring system characterized by, It includes an inlet pipe (1), a monitoring pipe (2), and a drain pipe (6) that are interconnected; the inlet pipe (1) and the drain pipe (6) are respectively connected to an oil transportation pipeline; the top of the monitoring pipe (2) is closed; a diversion plate (8) is fixed at the connection between the inlet pipe (1) and the drain pipe (6), and a diversion pipe (7) passes through the middle of the diversion plate (8); The monitoring tube (2) is provided with a movable plate (16), a fixed plate (14) and a pressure detection ring (11) along its length. A pipe section guide plate (10) is rotatably provided inside the pressure detection ring (11) via a rotating shaft. The fixed plate (14) is fixedly connected to the monitoring tube (2). The top of the movable plate (16) is connected to the top of the monitoring tube (2) via an elastic element. At least two lifting rods are slidably provided through the top of the fixed plate (14). The two ends of the lifting rods are fixedly connected to the bottom of the movable plate (16) and the pressure detection ring (11) respectively. The lifting rods are driven by a first pressure indicator for indicating the lifting status. An arc-shaped diversion plate (9) is fixed at the bottom center of the pipe section guide plate (10), with the arc facing downwards; one end of the diversion pipe (7) forms a diversion channel with the inlet pipe (1) and the arc-shaped diversion plate (9); the rotating shaft is connected to a second pressure indicator to indicate the deflection state of the pipe section guide plate (10).

2. The petroleum transport pipeline pressure monitoring system of claim 1, wherein, The first pressure indicator includes a first indicator plate (4) and an indicator rod (19); a through groove is provided in the middle of the fixing plate (14); a toothed ring (18) is rotatably provided on the top of the fixing plate (14); and a mounting plate (17) is fixed inside the toothed ring (18). One end of the indicator rod (19) passes through the top of the monitoring tube (2) and is fixedly connected to the first indicator plate (4), and the other end is fixedly connected to the mounting plate (17); at least two gears (13) are rotatably provided on the top of the fixed plate (14), and the gears (13) mesh with the gear ring (18); the lifting rod is a screw (12); the screw (12) passes through the fixed plate (14) and the gears (13), rotates with the fixed plate (14), and threadedly engages with the gears (13); the two ends of the screw (12) are fixedly connected to the bottom of the moving plate (16) and the top of the pressure detection ring (11), respectively.

3. The petroleum transport pipeline pressure monitoring system of claim 2, wherein, The second pressure indicator includes a second indicator plate (3) and an adjusting nut (5); one end of the rotating shaft passes through the monitoring tube (2) and is fixedly connected to the second indicator plate (3); the second indicator plate (3) is fixedly connected to the adjusting nut (5).

4. The petroleum transport pipeline pressure monitoring system of claim 1, wherein, The elastic element is a spring (15).

5. The petroleum transport pipeline pressure monitoring system of claim 3, wherein, It also includes a wireless detection module; the wireless detection module includes a wireless transceiver module and two angle sensors electrically connected to the wireless transceiver module. The two angle sensors are respectively connected to the indicator rod (19) and the rotating shaft, and the positive and negative angle deviation values ​​obtained by monitoring are transmitted to the host computer for monitoring via wireless communication through the wireless transceiver module.

6. The petroleum transport pipeline pressure monitoring system of claim 1, wherein, The ends of the liquid inlet pipe (1) and the liquid outlet pipe (6) are welded with flanges for connecting with the oil transportation pipeline.

7. The petroleum transport pipeline pressure monitoring system of claim 1, wherein, The arc-shaped diversion plate (9) is an arc-shaped spherical plate; the shunt plate (8) is a circular plate; the distance between the shunt pipe (7) and the liquid inlet pipe (1) is equal to the distance between the top of the shunt plate (8) and the arc top of the arc-shaped diversion plate (9).

8. A method of using a petroleum pipeline pressure monitoring system according to any one of claims 1-7, characterized in that, The method comprises the following steps: One end of the liquid inlet pipe (1) and the liquid outlet pipe (6) is connected with the oil transportation pipeline; by rotating the second pressure indicator, the oil is sent into the monitoring pipe (2), the position of the movable plate (16) is determined, the state of the first pressure indicator is determined, the current height of the movable plate (16) is determined, and the reset adjustment is realized; Under the condition of stable oil transportation, the second pressure indicator is rotated back to zero position, the arc surface of the arc-shaped diversion plate (9) is downward, one end of the shunt pipe (7) and the liquid inlet pipe (1) and the arc-shaped diversion plate (9) form a shunt channel, and the oil passing through the shunt channel and the oil in the shunt pipe (7) are combined to enter the liquid outlet pipe (6); Enter the monitoring stage: When the first pressure indicator determines that the position of the movable plate (16) moves, the pressure change in the pipeline is determined, wherein when the position of the movable plate (16) drops, the oil transportation pipeline has a leakage state; when the position of the movable plate (16) rises, the oil transportation pipeline has a resistance or a blocked pressure rise state; According to the second pressure indicator, the deflection state of the pipeline segment pointing plate (10) is determined, and the pipeline segment of the leakage or blocked pressure rise state is determined: Under the leakage state, the second pressure indicator deflects to the right and resets immediately, that is, one end of the pipeline segment pointing plate (10) in the direction of the liquid inlet pipe (1) deflects upward, and the other end deflects downward, so that the pipeline segment of the oil transportation pipeline connected with the liquid outlet pipe (6) leaks; under the leakage state, the second pressure indicator deflects to the left and resets immediately, that is, one end of the pipeline segment pointing plate (10) in the direction of the liquid inlet pipe (1) deflects downward, and the other end deflects upward, so that the pipeline segment of the oil transportation pipeline connected with the liquid inlet pipe (1) leaks, and the early warning and crack or pipeline connection are realized. Under the pressure rise state, the second pressure indicator deflects to the right and resets immediately, that is, one end of the pipeline segment pointing plate (10) in the direction of the liquid inlet pipe (1) deflects upward, and the other end deflects downward, so that the pipeline segment of the oil transportation pipeline connected with the liquid inlet pipe (1) has resistance or is blocked; under the pressure rise state, the second pressure indicator deflects to the left and resets immediately, that is, one end of the pipeline segment pointing plate (10) in the direction of the liquid inlet pipe (1) deflects upward, and the other end deflects downward, so that the pipeline segment of the oil transportation pipeline connected with the liquid outlet pipe (6) has resistance or is blocked, and the early warning and pipeline segment are realized.

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