Electric Ball Valve with Self-Inspection of Opening Degree Based on Pressures on Both Sides of Flow Channel

Abstract

The present invention discloses an electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel, which includes a valve body. A valve ball is sleeved inside the valve body. A through port is penetrated on the surface of the valve ball. An inner measurement port is recessed on the inner wall of the through port. And an outer measurement port communicated with the inner measurement port is recessed on the outer peripheral wall of the valve ball. A pressure-sensitive middle plate is embedded in the connection area between the outer measurement port and the inner measurement port. In the present invention, the sensor can be protected from damage by components such as a conical spring damper. By combining components such as a combined suction port and a suction and pressure pump, the residual medium can be cleaned and regular spot checks can be carried out to ensure the cleanliness of the equipment and the quality of the medium. Also, the state of the equipment can be intelligently monitored by the system, the data can be analyzed in real time and compared with the preset threshold values, signals are generated and displayed on the display screen of the main control room, which is convenient for operation. The opening degree state of the valve ball is verified multiple times to improve the accuracy of the detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of electric valves, and specifically to an electric ball valve that performs self-check on the opening degree based on the pressures on both sides of the flow channel. Background Art

[0002] An electric ball valve is an automatic control device driven by a driving motor, mainly used for on-off control in a fluid control system. By rotating the driving motor, the valve ball inside the valve is driven to open or close, thereby changing the size of the valve seat opening to achieve the opening, closing, or regulation of the fluid.

[0003] The electric ball valve mainly consists of a valve body, a valve ball, a transmission mechanism, a driving motor, etc. The valve body is the main part of the electric ball valve, used to accommodate the ball and other internal components. The valve ball has a spherical shape and is the core component of the valve, nested with the ball seat inside the valve body to achieve the opening and closing of the fluid. The transmission mechanism is responsible for converting the rotation of the driving motor into the movement of the valve ball. The driving motor serves as the driving force for the entire electric ball valve. When using an electric ball valve in some fields that require precise regulation to keep the pipeline medium flowing at all times, it is necessary to monitor the operation of the electric ball valve at all times to avoid abnormal actual opening degrees of the electric ball valve.

[0004] It should be noted in combination with the above content that the Chinese patent with the publication number CN211477040U discloses a ball valve opening and closing degree detection device. On the working platform, the valve is limited by relevant mechanical structures and driven to rotate. The area of the through hole exposed on the valve ball after rotating the handle of the ball valve is photographed by a vision detection camera. However, the above patent content only conducts detection before the electric ball valve leaves the factory, and the single shooting detection method does not specifically contact the pressures on both sides of the flow channel of the electric ball valve in the state of the valve ball rotating and closing and specific data, resulting in a lack of rigorous and scientific basis for detection. At the same time, during the continuous use of the valve ball, affected by the use environment, component life, and other factors, there is still a certain opening degree when the valve ball contacts the inner wall of the flow channel after rotation, so that there is a leakage in the interception of the medium by the valve ball.

[0005] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide an electric ball valve that performs self-check on the opening degree based on the pressures on both sides of the flow channel to solve the problems raised.

[0007] To achieve the above object, the present invention provides the following technical solution: An electric ball valve for self-checking the opening based on the pressures on both sides of the flow channel, including an electric ball valve for self-checking the opening based on the pressures on both sides of the flow channel, comprising a valve body, characterized in that a valve ball is sleeved inside the valve body, a through port is provided through the surface of the valve ball, an inner measurement port is recessed on the inner wall of the through port, and an outer measurement port communicating with the inner measurement port is recessed on the outer peripheral wall of the valve ball, and a pressure-sensitive middle plate is embedded in the connection area between the outer measurement port and the inner measurement port;

[0008] On both sides of the pressure-sensitive middle plate, an external pressure sensor for collecting the external pushing pressure parameters generated by the medium interception pressure on the outer periphery of the valve ball and an internal pressure sensor for collecting the internal pushing pressure parameters generated by the medium flow inside the through port are symmetrically arranged, and the collected internal pushing pressure parameters and external pushing pressure parameters are communicatively connected to the database of the external pipeline transportation general control room and form a single-control pressure measurement supervision system.

[0009] Further, the external pressure sensor and the internal pressure sensor are respectively embedded in the middle of the plate body on the side of the pressure-sensitive middle plate facing the outer measurement port and the inner measurement port; and a conical spring damper I and a conical spring damper II are respectively sleeved on the outer periphery of the external pressure sensor and the internal pressure sensor. A movable ball I is sleeved outside the conical spring damper I and located inside the outer measurement port, a spacer ring is arranged outside the conical spring damper II and sleeved on the inner wall of the inner measurement port, and a movable ball II is arranged on the side of the spacer ring and located inside the inner measurement port.

[0010] Further, a top valve bracket sleeved with the valve ball is also provided at the top of the valve body, a bottom valve bracket sleeved with the valve ball is provided at the bottom of the valve body, a collection seat is provided at the bottom of the bottom valve bracket, a right valve pipe is provided at one end of the valve body, and a left valve pipe is provided at the other end of the valve body.

[0011] Further, side brackets are symmetrically arranged on the outer walls on both sides of the valve body, suction ports are provided through the middle parts on both sides of the valve body, the right valve pipe and the left valve pipe are symmetrically connected to the outer walls at both ends of the valve body, and inner sleeves are sleeved in the end face pipe walls of the right valve pipe and the left valve pipe close to the valve body.

[0012] Further, a slide rod penetrating to the outside of the outer measurement port is arranged on the outer side wall of the movable ball I, a conical head is arranged on one side rod body of the slide rod, and the conical head is exposed in the notch on the surface of the outer measurement port close to the valve ball.

[0013] The internal pressure sensor is used to collect the internal pushing pressure parameters generated by the medium flow inside the through port pushing the movable ball II, and the external pressure sensor is used to collect the external pushing pressure parameters generated by the medium interception pressure on the outer periphery of the valve ball. The collected internal pushing pressure parameters and external pushing pressure parameters are communicatively connected to the database of the external pipeline transportation general control room and form a single-control pressure measurement supervision system.

[0014] Furthermore, a drive motor drivingly connected to the valve ball is provided above the top valve holder. An air delivery pipe is disposed through the interior of the top valve holder, and the bottom of the air delivery pipe extends into the suction port.

[0015] Furthermore, an electric push rod is provided at the bottom of the bottom valve holder. A spray head is sleeved on the surface of the electric push rod. A suction and pressure pump is provided above the spray head. A suction pipe connected to the suction port is provided at the top of the suction and pressure pump.

[0016] Furthermore, a pull-out plate is provided at the bottom of the collection base. A hollow shaft is provided at the center of the top of the pull-out plate. A rotating box is sleeved outside the hollow shaft. A plurality of drying compartments are recessed at the top of the rotating box. A housing body connected to the pull-out plate is provided at one side of the rotating box.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, a rod body is provided at the bottom of the valve ball and inserted into the bottom valve holder, enhancing the stability of the rotation of the valve ball and avoiding medium leakage or equipment damage caused by unstable rotation. Through the setting of the internal pressure sensor and the external pressure sensor, the pressure data generated by the medium flow can be collected in real time and dynamically analyzed. The design of components such as the conical spring damper and the spacer ring effectively protects the sensor from high-pressure damage. The combination of components such as the suction port, the suction and pressure pump, the spray head, and the drying compartment realizes the function of cleaning the medium residue and periodically sampling the medium, ensuring the cleanliness of the equipment and the quality of the medium.

[0019] 2. Based on the data collected by the internal pressure sensor and the external pressure sensor, the system can perform data analysis in real time and make a comparison and judgment according to the preset threshold range, thereby realizing the intelligent monitoring of the equipment state. Relevant signals are generated according to the collected parameters and displayed on the display screen in the main control room in the form of text information, facilitating the operator to perform real-time monitoring and operation. The system can start corresponding treatment measures according to the preset plan to reduce losses and perform maintenance in a timely manner, and multiple checks are performed on the opening state of the valve ball in the use state to improve the accuracy of the detection result of the valve ball state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a three-dimensional view of the overall structure of the present invention;

[0022] Figure 2Explosion structure schematic diagram of the valve body of the present invention;

[0023] Figure 3 Structure schematic diagram of the valve ball of the present invention;

[0024] Figure 4 Structure schematic diagram of the pressure-sensitive middle plate of the present invention;

[0025] Figure 5 Structure schematic diagram of the pressure-sensitive middle plate and the internal pressure sensor of the present invention;

[0026] Figure 6 Structure schematic diagram of the left valve pipe of the present invention;

[0027] Figure 7 Structure schematic diagram of the bottom valve frame and the collection seat of the present invention;

[0028] Figure 8 Structure schematic diagram of the bottom valve frame of the present invention;

[0029] Figure 9 Structure schematic diagram of the top valve frame of the present invention;

[0030] Figure 10 Schematic diagram of the flow trajectory of the medium along the inside of the valve ball of the present invention.

[0031] Reference numerals: 1, valve body; 101, side frame; 102, suction port; 2, right valve pipe; 3, top valve frame; 301, gas transmission pipe; 4, left valve pipe; 401, inner kit; 5, bottom valve frame; 501, electric push rod; 502, spray head; 503, suction and pressure pump; 504, suction pipe; 6, collection seat; 601, pull plate; 602, rotating box; 603, outer shell; 604, partition chamber; 7, valve ball; 701, through port; 702, inner side port; 703, outer side port; 8, pressure-sensitive middle plate; 801, conical spring damper I; 802, external pressure sensor; 803, movable ball I; 804, sliding rod; 805, conical head; 806, internal pressure sensor; 807, conical spring damper II; 808, spacer ring; 809, movable ball II. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figure 1 - Figure 10As shown in the figure, this embodiment is an electric ball valve that performs self-check on the opening degree based on the pressures on both sides of the flow channel, including a valve body 1. A valve ball 7 is sleeved inside the valve body 1. A through port 701 is provided through the surface of the valve ball 7. An inner measurement port 702 is recessed on the inner wall of the through port 701. An outer measurement port 703 communicating with the inner measurement port 702 is recessed on the outer peripheral wall of the valve ball 7. A pressure-sensitive middle plate 8 is embedded in the connection area between the outer measurement port 703 and the inner measurement port 702.

[0034] On both sides of the pressure-sensitive middle plate 8, an outer pressure sensor 802 for collecting the outer push pressure parameters generated by the medium interception pressure on the outer periphery of the valve ball 7 and an inner pressure sensor 806 for collecting the inner push pressure parameters generated by the medium flow inside the through port 701 are symmetrically arranged. The collected inner push pressure parameters and outer push pressure parameters are communicated and connected to the database in the external pipeline transportation general control room and form a single-control pressure measurement supervision system. The valve body 1 is flange-connected to the medium transportation pipeline through the right valve pipe 2 and the left valve pipe 4. This is not limited to this one connection method and can be specifically replaced according to actual needs to form the regulation and management of a separate area of the medium transportation.

[0035] The outer pressure sensor 802 and the inner pressure sensor 806 are respectively embedded in the middle of the plate body of the pressure-sensitive middle plate 8 facing the outer measurement port 703 and the inner measurement port 702. A conical spring damper 801 and a conical spring damper 807 are respectively sleeved on the outer periphery of the outer pressure sensor 802 and the inner pressure sensor 806. An active ball 803 located inside the outer measurement port 703 is sleeved outside the conical spring damper 801. A spacer ring 808 sleeved on the inner wall of the inner measurement port 702 is arranged outside the conical spring damper 807. An active ball 809 located inside the inner measurement port 702 is arranged on the side of the spacer ring 808.

[0036] Side frames 101 are symmetrically arranged on the outer walls on both sides of the valve body 1. Suction ports 102 are provided through the middle parts on both sides of the valve body 1. The right valve pipe 2 and the left valve pipe 4 are symmetrically connected to the outer walls at both ends of the valve body 1. Inner sleeves 401 are sleeved in the end face pipe walls of the right valve pipe 2 and the left valve pipe 4 close to the valve body 1.

[0037] During the rotation of the valve ball 7, when the through port 701 gradually fits with the inner parts of the right valve pipe 2 and the left valve pipe 4 in terms of the opening degree, during this process, the amount of the medium passing through the through port 701 increases. When the medium flows along the inside of the through port 701, the medium pushes and adheres to the active ball 809 in the inner measurement port 702, causing the active ball 809 to be pushed and squeeze the conical spring damper 807. Under the continuous thrust, the active ball 809 squeezes the conical spring damper 807 and contacts the inner pressure sensor 806. The spacer ring keeps the maximum contact pressure between the active ball 809 and the inner pressure sensor 806 to avoid damaging the inner pressure sensor 806 due to continuous high pressure.

[0038] The external pressure sensor 802 is embedded in the middle of the plate body of the pressure-sensitive middle plate 8 on the side facing the outer measuring port 703. A first conical spring damper 801 is sleeved outside the external pressure sensor 802, and a first movable ball 803 located inside the outer measuring port 703 is sleeved outside the first conical spring damper 801;

[0039] When the valve ball 7 drives the conical head 805 close to the inside of the right valve pipe 2 and the left valve pipe 4, after the medium in the right valve pipe 2 is blocked and intercepted by the valve ball 7, the medium covers the surface of the valve ball 7. The medium squeezes the conical head 805 in the external notch outside the outer measuring port 703, prompting the conical head 805 to be pressed and adhered in the notch. The conical head 805 slides along the inner sealing sleeve of the outer measuring port 703 through the slide rod 804. The slide rod 804 is blocked by the conical head 805, prompting the first movable ball 803 to have a maximum limit when moving inside the outer measuring port 703. Furthermore, it ensures that the external pressure sensor 802 is not damaged by the water hammer impact during the instant of cut-off blockage. The first movable ball 803 pushes the first conical spring damper 801 and then contacts the external pressure sensor 802.

[0040] A slide rod 804 penetrating to the outside of the outer measuring port 703 is arranged on the outer side wall of the first movable ball 803. A conical head 805 is arranged on one side rod body of the slide rod 804, and the conical head 805 is exposed in the notch of the outer measuring port 703 close to the surface of the valve ball 7. When the through port 701 is in line with the inside of the right valve pipe 2 and the left valve pipe 4, when the conical head 805 gradually rotates and approaches the two sets of side frames 101 along with the valve ball 7, in this state, there is a small amount of medium in the outer measuring port 703 near the conical head 805. When the conical head 805 approaches the suction port 102, the medium flows into the suction port 102. The suction port 102 is opened according to actual needs and is fixed in the shape shown in the drawing.

[0041] The internal pressure sensor 806 is embedded in the middle of the plate body of the pressure-sensitive middle plate 8 on the side facing the inner measuring port 702. A second conical spring damper 807 is sleeved outside the internal pressure sensor 806. A spacer ring 808 sleeved on the inner wall of the inner measuring port 702 is arranged outside the second conical spring damper 807, and a second movable ball 809 located inside the inner measuring port 702 is arranged on the side of the spacer ring 808.

[0042] Single-control pressure measurement and supervision system, such as Figure 10As shown in the figure, when the medium enters the inside of the through port 701 along the A trajectory, a set of internal pressure sensors 806E in the flowing direction of the A trajectory are extruded by the flowing medium to generate an internal pushing pressure parameter Qei, while another symmetric internal pressure sensor 806F is pushed by the contact of the medium to generate an internal pushing pressure parameter Qfi. Among them, the area where the internal pushing pressure parameter Qei is generated is the strong pressure area, and the area where the internal pushing pressure parameter Qfi is generated is the weak pressure area. The obtained internal pushing pressure parameter Qei and internal pushing pressure parameter Qfi are sent to the database through communication connection, and the database retrieves the preset internal pushing pressure range value stored in it from the internal and compares and analyzes it with the internal pushing pressure parameter Qei and internal pushing pressure parameter Qfi;

[0043] It should be noted that A represents the overall flowing direction of the medium, B represents the flowing change trajectory of the medium caused by the opening degree of the valve ball, C represents the strong pressure area, D represents the weak pressure area, E represents the internal pressure sensor 806 near the strong pressure area, and F represents the internal pressure sensor 806 near the weak pressure area.

[0044] If the internal pushing pressure parameter Qei is within the preset internal pushing pressure range value and the internal pushing pressure parameter Qfi is less than the minimum value of the preset internal pushing pressure range value, then according to the difference obtained by subtracting the internal pushing pressure parameter Qfi from the preset internal pushing pressure range value, the preset difference range threshold value retrieved and stored in the database is matched with the difference. According to the matching result of the difference within the preset difference range threshold value, it is used to judge whether the current opening angle of the valve ball 7 is consistent with the set angle of the driving motor driving the valve ball 7 to rotate, and a pointer table is used to perform multiple comparisons and judgments on the current opening angle of the valve ball 7.

[0045] If the internal pushing pressure parameter Qei is within the preset internal pushing pressure range value, and the internal pushing pressure parameter Qfi is within the preset internal pushing pressure range value, and the parameter fluctuation ranges of the internal pushing pressure parameter Qei and the internal pushing pressure parameter Qfi are similar, and the fluctuation range is within ±p, then it indicates that the valve ball 7 is fully opened in this state, and the flowing rate of the medium along the inside of the through port 701 is stable. Among them, p represents a natural number greater than zero. When the fluctuation range exceeds ±p, a pipe flow alarm signal is generated, and the generated pipe flow alarm signal is sent to the database;

[0046] The database will display it on the display screen of the main control room in the form of text information in the style of "electric valve serial number 027 / pipe flow anomaly / emergency plan to control valve closure / maintenance alarm" for the alarm operator to control according to the emergency plan in time to reduce losses and perform maintenance and treatment in time.

[0047] The external pressure sensor 802 is used to dynamically collect data, including the extrapolated pressure parameter WT generated after the medium in the right valve tube 2 is cut off, and the pressure set when the valve ball 7 rotates close to the suction port 102 area and the cone head 805 passes through the valve body 1 and enters the suction port 102, and marks it as the extrapolated pressure parameter WR. The valve tube according to the actual medium flow direction is not limited to the right valve tube 2, and the extrapolated pressure parameter WT and the extrapolated pressure parameter WR are communicated and connected to the database, and the preset medium pressure range value threshold and the vacant fluctuation range value threshold stored in the database are retrieved and compared with the extrapolated pressure parameter WT and the extrapolated pressure parameter WR:

[0048] If the extrapolated pressure parameter WT is within the preset medium pressure range value threshold, and the extrapolated pressure parameter WR is within the vacant fluctuation range value threshold, no signal is generated;

[0049] If the extrapolated pressure parameter WT is not within the preset medium pressure range value threshold, and the extrapolated pressure parameter WR is not within the vacant fluctuation range value threshold, a ball turn abnormality signal is generated, and the database generates text in the style of "Electric Valve 027 / Ball Turn Pressure Abnormality / Ball Turn Vacant Abnormality / Plan Valve Closure Start / Maintenance Alarm" and displays it on the display screen of the main control room to alert the control personnel to control according to the plan in time, reduce losses and carry out repairs in time.

[0050] Embodiment 2: This embodiment is an electric ball valve that performs opening self-check based on the pressure on both sides of the flow channel, including a top valve frame 3 sleeved with a valve ball 7 is arranged on the top of the valve body 1, a bottom valve frame 5 sleeved with the valve ball 7 is arranged at the bottom of the valve body 1, and a collecting seat 6 is arranged at the bottom of the bottom valve frame 5, a right valve pipe 2 is arranged at one end of the valve body 1, and a left valve pipe 4 is arranged at the other end of the valve body 1;

[0051] When the medium delivery needs to be regulated, the medium enters the right valve pipe 2, the valve body 1, the port 701, the left valve pipe 4 and the external pipe through the external pipe. The medium flow direction is changed according to actual needs. When the opening needs to be regulated, the driving motor on the top valve frame 3 is connected to the top shaft of the valve ball 7 through the transmission mechanism. The transmission mechanism includes a coupling, a lead screw and a gear, etc., which are replaced and connected according to actual needs, thereby driving the valve ball 7 to rotate along the inside of the valve body 1. A rod body is provided at the bottom of the valve ball 7 to be inserted into the bottom valve frame 5, thereby causing the valve ball 7 to rotate stably along the inside of the valve body 1.

[0052] It should be noted that a traditional mechanical pointer meter can be provided in the connection area between the drive motor and the top shaft of the valve ball 7. By providing a transmission wheel in contact with the outer wall of the shaft, the shaft rotates, thereby driving the pointer meter to rotate. The pointer scale on the pointer meter is used to display the opening of the electric ball valve. The drive motor drives the valve ball 7 to rotate counterclockwise.

[0053] Above the top valve holder 3, there is a drive motor that is drivingly connected to the valve ball 7. Inside the top valve holder 3, there is an air delivery pipe 301 running through it, and the bottom of the air delivery pipe 301 extends into the suction port 102. During the suction of the suction pump 503, the air delivery pipe 301 is connected to an external pure gas device to guide the gas to be sprayed into the suction port 102, cooperating with the suction pump 503 to form a start-up cycle for cleaning the residual medium in the suction port 102, the suction pipe 504, the suction pump 503, and the nozzle 502. The pure gas is replaced and adapted according to the actual medium.

[0054] At the bottom of the bottom valve holder 5, there is an electric push rod 501. The surface of the electric push rod 501 is sleeved with a nozzle 502. Above the nozzle 502, there is a suction pump 503. At the top of the suction pump 503, there is a suction pipe 504 connected to the suction port 102. When the suction pump 503 starts, the suction pump 503 is connected to the suction port 102 through the suction pipe 504 to extract a small amount of medium flowing into the suction port 102, and the extracted medium is transported to the nozzle 502 through a telescopic hose. The nozzle 502 is driven by the electric push rod 501 and then approaches the partition chamber 604.

[0055] At the bottom of the collection seat 6, there is a pull-out plate 601. At the center of the top of the pull-out plate 601, there is a hollow shaft, and a rotating box 602 is sleeved outside the hollow shaft. The top of the rotating box 602 is recessed to form multiple dry partition chambers 604. On one side of the rotating box 602, there is a housing 603 connected to the pull-out plate 601. At the bottom of the pull-out plate 601, there is a micro motor. The micro motor drives the rotating box 602 to rotate through the hollow shaft, thereby adjusting the partition chambers 604 to approach one by one below the nozzle 502, and combining with the electric push rod 501 to spray the medium once into the partition chambers 604 for subsequent regular sampling and inspection of the medium state.

[0056] When the through port 701 approaches the area of the suction port 102 as the valve ball 7 rotates, the suction pump 503 extracts a small amount of the medium flowing into the suction port 102 for recording and retention for subsequent analysis and processing.

[0057] Combining Embodiment 1 and Embodiment 2, it can be seen that by inserting the bottom rod of the valve ball 7 into the bottom valve holder 5, the rotation stability can be enhanced, avoiding medium leakage or equipment damage. The internal and external pressure sensors 802 are set to collect and analyze pressure data in real time, and the conical spring damper protects the sensors from being damaged. Combining components such as the suction port 102 and the suction pump 503 to achieve cleaning of residual medium and regular sampling and inspection, ensuring the cleanliness of the equipment and the quality of the medium. Also, the system can intelligently monitor the equipment status, analyze data in real time and compare with preset thresholds, generate signals and display them on the display screen in the main control room for easy operation, and multiple checks on the opening state of the valve ball 7 to improve the accuracy of the detection results.

[0058] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments only. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. Electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel, comprising a valve body (1), characterized in that, A valve ball (7) is sleeved inside the valve body (1). A through port (701) is arranged through the surface of the valve ball (7). An inner measurement port (702) is recessed on the inner wall of the through port (701). An outer measurement port (703) communicating with the inner measurement port (702) is recessed on the outer peripheral wall of the valve ball (7). A pressure-sensitive middle plate (8) is embedded in the connection area between the outer measurement port (703) and the inner measurement port (702). On both sides of the pressure-sensitive middle plate (8), an outer pressure sensor (802) for collecting the outer push pressure parameter generated by the medium throttling pressure on the outer periphery of the valve ball (7) and an inner pressure sensor (806) for collecting the inner push pressure parameter generated by the medium flow inside the through port (701) are symmetrically arranged. The collected inner push pressure parameter and outer push pressure parameter are communicated and connected to the database of the external pipeline transportation general control room to form a single-control pressure measurement supervision system. There are two inner pressure sensors (806) arranged symmetrically. A group of inner pressure sensors (806) E along the A trajectory flow direction are squeezed by the medium flow to generate an inner push pressure parameter Qei, while the other inner pressure sensor (806) F symmetric to it is pushed by the medium contact to generate an inner push pressure parameter Qfi. If the inner push pressure parameter Qei is within the preset inner push pressure range value, and the inner push pressure parameter Qfi is less than the minimum value of the preset inner push pressure range value, according to the difference obtained by subtracting the inner push pressure parameter Qfi from the preset inner push pressure range value, the difference is matched with the preset difference range threshold retrieved and stored in the database. According to the matching result of the difference within the preset difference range threshold, it is used to judge whether the current opening angle of the valve ball (7) is consistent with the set angle of the driving motor driving the valve ball (7) to rotate, and a pointer meter is used to perform multiple comparison and judgment on the current opening angle of the valve ball (7). Among them, A represents the overall flow direction of the medium. If the inner push pressure parameter Qei is within the preset inner push pressure range value, and the inner push pressure parameter Qfi is within the preset inner push pressure range value, and the parameter fluctuation ranges of the inner push pressure parameter Qei and the inner push pressure parameter Qfi are similar, and the fluctuation range is within ±p, it means that the valve ball (7) is fully opened in this state, and the medium flow rate along the inside of the through port (701) is stable. Among them, p represents a natural number greater than zero. When the fluctuation range exceeds ±p, a pipeline flow alarm signal is generated, and the generated pipeline flow alarm signal is sent to the database.

2. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 1, wherein, The external pressure sensor (802) and the internal pressure sensor (806) are respectively embedded in the middle of the plate body of the pressure sensing middle plate (8) facing the external measuring port (703) and the internal measuring port (702); and the outer peripheries of the external pressure sensor (802) and the internal pressure sensor (806) are respectively sleeved with a conical spring damper 1 (801) and a conical spring damper 2 (807), the outer side of the conical spring damper 1 (801) is sleeved with a movable ball 1 (803) located inside the external measuring port (703), the outer side of the conical spring damper 2 (807) is provided with a spacer ring (808) sleeved on the inner wall of the internal measuring port (702), and the side of the spacer ring (808) is provided with a movable ball 2 (809) located inside the internal measuring port (702).

3. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 1, wherein The top of the valve body (1) is also provided with a top valve frame (3) sleeved with the valve ball (7), the bottom of the valve body (1) is provided with a bottom valve frame (5) sleeved with the valve ball (7), and the bottom of the bottom valve frame (5) is provided with a collecting seat (6), one end of the valve body (1) is provided with a right valve tube (2), and the other end of the valve body (1) is provided with a left valve tube (4).

4. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 3, wherein Side frames (101) are symmetrically arranged on the outer walls of both sides of the valve body (1), and suction ports (102) are arranged through the middle of both sides of the valve body (1). The right valve tube (2) and the left valve tube (4) are symmetrically connected to the outer walls of both ends of the valve body (1), and inner sleeves (401) are sleeved in the end tube walls of the right valve tube (2) and the left valve tube (4) close to the valve body (1).

5. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 2, wherein A sliding rod (804) is provided on the outer wall of the movable ball (803) and extends to the outside of the outer measuring port (703). A cone head (805) is provided on one side of the sliding rod (804), and the cone head (805) is exposed in a recess on the surface of the outer measuring port (703) close to the valve ball (7).

6. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 2, wherein The internal pressure sensor (806) is used to collect the internal push pressure parameters generated by the medium flowing through the opening (701) and pushing the movable ball 2 (809), and the external pressure sensor (802) is used to collect the external push pressure parameters generated by the medium cut-off pressure on the periphery of the valve ball (7). The collected internal push pressure parameters and external push pressure parameters are communicated and connected to the database of the external pipeline control room to form a single-control pressure measurement and monitoring system.

7. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 3, characterized in that, A driving motor is arranged above the top valve frame (3) and is transmission-connected to the valve ball (7). An air supply pipe (301) is arranged inside the top valve frame (3), and the bottom of the air supply pipe (301) extends into the suction port (102).

8. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 3, wherein An electric push rod (501) is arranged at the bottom of the bottom valve frame (5), a nozzle (502) is sleeved on the surface of the electric push rod (501), a suction pump (503) is arranged above the nozzle (502), and a suction pipe (504) connected to the suction port (102) is arranged at the top of the suction pump (503).

9. The electric ball valve for self-checking the opening degree based on the pressures on both sides of the flow channel according to claim 3, wherein A drawer plate (601) is provided at the bottom of the collection base (6). A hollow shaft is provided at the center of the top of the drawer plate (601), and a rotary box (602) is sleeved outside the hollow shaft. A multi-dry bin (604) is recessed at the top of the rotary box (602). A housing (603) connected to the drawer plate (601) is provided on one side of the rotary box (602).

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