CN220396702U - Pneumatic control system for remote electric control and valve monitoring - Google Patents

Abstract

The utility model discloses a pneumatic control system for remotely controlling and monitoring a valve in an electric control way, which comprises a valve arranged in a pipeline, wherein the valve is connected with a pneumatic mechanism, the pneumatic mechanism is connected with an air pump, and the pneumatic mechanism drives the valve to be closed or opened; the valve is connected with a rotating rod, a fixing frame is arranged outside the rotating rod, the rotating rod penetrates through the pipeline, and the rotating rod is in sealed rotating connection with the pipeline; the top of the rotating rod is connected with a pneumatic mechanism, the pneumatic mechanism is connected with an air pump through an air pipe, and the air pump is arranged in the valve well; and (5) establishing a data model by analyzing the pressure data collection of each valve. Abnormal data can be analyzed, early warning is carried out, the opening and closing angle of the valve is controlled, and the purpose of remotely controlling the valve is achieved; effectively reducing the safety risk of the pipeline.

Description

Pneumatic control system for remote electric control and valve monitoring

Technical Field

The utility model belongs to the technical field of gas pipelines, and particularly relates to a pneumatic control system for remotely controlling and monitoring a valve.

Background

The gas oil belongs to the high-risk industry, and when the pipeline is damaged, the gas oil causes great danger to the personnel and property. The arrival time of normal rescue personnel is 15-30 minutes. The gas leakage is large in quantity in the period, so that the gas waste is caused, and a certain potential safety hazard exists. The remote valve closing can be used for emergently closing the valve within one minute, so that the emergency time is greatly shortened, and the safety is reduced.

At present, when gas or petroleum pipeline leakage is collided and leaked, manual valve closing operation is generally needed, the time consumed in the manual valve closing process is long, a large amount of gas or petroleum leakage can be caused, and potential safety hazards of explosion exist, so that a control system of a remote valve closing valve is needed, and the valve closing efficiency is improved.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a pneumatic control system for remotely controlling and monitoring valves, which is used for establishing a data model by analyzing the pressure data collection of each valve. The abnormal data can be analyzed, early warning is carried out, the opening and closing angle of the valve is controlled, and the purpose of remotely controlling the valve is achieved.

The utility model provides the following technical scheme:

a pneumatic control system for remotely controlling and monitoring a valve in an electric control manner comprises a valve arranged in a pipeline, wherein the valve is connected with a pneumatic mechanism, the pneumatic mechanism is connected with an air pump, and the pneumatic mechanism drives the valve to be closed or opened;

the valve is connected with a rotating rod, a fixing frame is arranged outside the rotating rod, the rotating rod penetrates through the pipeline, and the rotating rod is in sealed rotating connection with the pipeline; the top of the rotating rod is connected with a pneumatic mechanism, the pneumatic mechanism is connected with an air pump through an air pipe, and the air pump is arranged in the valve well;

the pneumatic mechanism comprises a sealing cover, two sealing sliding plates are symmetrically arranged in the sealing cover, an air cavity is formed between the two sealing sliding plates, the air cavity is communicated with an air pump through an air pipe, the opposite inner sides of the two sealing sliding plates are respectively connected with racks, the opposite inner sides of the two racks are connected with gears in a meshed manner, the gears are connected with a rotating rod, one sides, far away from the racks, of the two sealing sliding plates are respectively connected with at least one first spring, and the other ends of the first springs are connected with the inner wall of the sealing cover;

preferably, a pressure detection mechanism is arranged on one side of the valve, the pressure detection mechanism can detect the pressure and the flow rate at the valve, the pressure detection mechanism is connected with a data acquisition module, the acquisition module transmits the acquired pressure information and flow rate information to a control center, the control center carries out data processing on the acquired pressure information and flow rate information, the data processing module classifies, compares and predicts the acquired pressure and flow rate data, if the acquired pressure and flow rate data exceeds a set early warning value, alarms, sends an instruction to the air pump, and drives the rotating rod to control the opening and closing angle of the valve through the pneumatic mechanism; the pressure detection mechanism is arranged on the outer surface of the pipeline and comprises an outer sealing shell, an inner box body is arranged in the outer sealing shell, a piston plate is arranged in the inner box body and is in sealing sliding connection with the inner wall of the inner box body, one side of the piston plate is connected with a telescopic rod, the other end of the telescopic rod penetrates through the inner box body, the telescopic rod is in sealing sliding connection with the inner box body, the other end of the telescopic rod is rotationally connected with a connecting rod, the other end of the connecting rod is rotationally connected with a first rotating wheel and a second rotating wheel, the first rotating wheel and the second rotating wheel are eccentrically rotationally connected with the connecting rod, the first rotating wheel and the second rotating wheel are rotationally connected with a fixed rod, and the first rotating wheel and the second rotating wheel are connected with the sealing shell through the fixed rod; the rotary blocks are symmetrically connected with the two piezoelectric crystal pieces, the end positions of the piezoelectric crystal pieces are connected with pull ropes, the other ends of the pull ropes are connected with sliding blocks, the sliding blocks are arranged in sliding grooves of the discs, and the sliding blocks are in sliding connection with the sliding grooves.

Preferably, one end of the piston plate, which is close to the telescopic rod, is connected with at least one blocking block, a first air passage is arranged on the inner wall of the inner box body, the lower end of the first air passage is communicated with the pipeline, the upper end of the first air passage is connected with an air port, and the air port is connected with the top of the inner box body; the air port is arranged corresponding to the blocking block, and the blocking block can seal and shield the air port.

Preferably, the lower central position of the piston plate is connected with a second spring, the other end of the second spring is connected with the inner wall of the inner box body, one side of the piston plate, which is far away from the telescopic rod, is at least connected with a moving rod, the other end of the moving rod penetrates through the pipeline and extends into the pipeline, the moving rod is in sealing sliding connection with the pipeline, one end of the moving rod, which is close to the pipeline, is provided with a second air passage, and the diameter of the second air passage is larger than that of the first air passage.

Preferably, the piezoelectric crystal piece is connected with a rectifier through a wire, and the rectifier is connected with the data acquisition module; one side of the disc is connected with a supporting rod, and the disc is fixedly connected with the inner box body through the supporting rod.

Preferably, the disc is provided with a sliding groove along the circumferential direction, the sliding groove is provided with a limiting mechanism, the limiting mechanism limits the sliding block, the pull rope pulls the piezoelectric crystal piece to deform, and after the piezoelectric crystal piece deforms to a certain extent, the limiting mechanism releases the limiting of the sliding block, and the sliding block continuously slides in the sliding groove.

Preferably, the limiting mechanism comprises two baffles, the two baffles are symmetrically arranged at the outer side of the chute, the baffles are connected with the disc, a gap is arranged between the two baffles, and a pull rope can pass through the gap between the two baffles; one side of each baffle, which is close to the corresponding sliding groove, is connected with a limiting block, and the other end of each limiting block extends into the corresponding sliding groove; the inner side of the sliding groove is provided with an inner groove, the sliding block can slide into the inner groove through the limiting block, the inner groove forms friction resistance to the sliding block, when the pulling force of the pull rope is larger than the resistance of the inner groove, the sliding block slides out of the inner groove, and the sliding block slides into the sliding groove again.

Preferably, the data acquisition module acquires pressure data and flow rate data of the pressure detection mechanism, the data acquisition module transmits the acquired data to the control center, the control center analyzes and processes the acquired data through the data processing module, the analysis and processing process comprises the steps of firstly, segmenting the acquired pipeline pressure data and flow rate data, extracting characteristics after segmentation, selecting energy, peak value and amplitude data characteristics, carrying out layering processing on the selected characteristics, carrying out clustering operation on each layer of data, finding out a clustering center of each layer of data, and calculating Euclidean distance between any two layers of data centers; step two, adding Euclidean distances between any two layers of data, and reclassifying the two layers of data with the smallest distance into a new data class; step three, finding out a clustering center of the new data class, and calculating Euclidean distances between the new data class center and other data class centers in the step two; step four, repeating the step two and the step three until all data types are combined into one type of data, outputting the data to obtain accurate data of pressure and flow velocity in the pipeline, and removing information with larger error; and fifthly, taking three points near the valve as big warms, collecting pressure and flow rate data in different time periods and processing the data through the wounded part step, if one point data exceeds or is lower than a set early warning value in the same time period, sending an alarm instruction to an alarm system by a control center for alarm processing, and when the pressure and flow rate data are abnormal, sending an instruction to an air pump by the control center, and controlling the air pump to drive a pneumatic mechanism to drive the valve to open or close at an angle of (15 degrees, 30 degrees and 90 degrees). The purpose of remotely controlling the valve is achieved. And the pressure data and the valve are linked, so that the pipeline safety risk is effectively reduced.

In addition, when the pressure detection mechanism detects, when the pipeline is ventilated normally, the gas flow rate in the pipeline is faster, the upper cavity of the piston plate is communicated with the pipeline, negative pressure is formed above the piston plate, the piston plate moves upwards, the second air passage is arranged at the lower end of the moving rod before the piston plate moves, the lower cavity of the piston plate is isolated from the pipeline, the blocking block contacts with the air port in the upward moving process of the piston plate, the blocking block is inserted into the air port to form a seal, the blocking block isolates the first air passage from being communicated with the pipeline, meanwhile, the moving rod moves upwards along with the piston plate, the second air passage is exposed in the lower cavity of the piston plate, the lower cavity of the piston plate is communicated with the pipeline, the lower cavity of the piston plate is subjected to negative pressure, and is subjected to the rebound action of a spring, when the piston plate drives the moving rod to move downwards to a certain amount, the second air passage is separated from the inner box, the blocking block above the piston plate is separated from the air port, the first air passage is continuously communicated with the upper cavity of the piston plate and the pipeline, and the upper cavity of the piston plate is continuously subjected to negative pressure.

When the piston plate reciprocates, the piston plate drives the connecting rod and the first rotating wheel and the second rotating wheel to do circular motion simultaneously, the first rotating wheel and the second rotating wheel drive the rotating blocks at two sides to rotate, the rotating blocks drive the piezoelectric crystal piece to rotate, the piezoelectric crystal piece rotates and is subjected to stretching traction force when rotating, the other end of the pull rope is connected with the sliding block, the sliding block slides in the sliding groove at the periphery side of the disc, the sliding block slides into the inner groove through the limiting mechanism, short-time limiting is carried out on the sliding block, the pull force of the pull rope on the piezoelectric crystal piece is increased, the piezoelectric crystal piece deforms, corresponding potential differences are generated at two ends, the potential differences are sent into the rectifier and the data acquisition card through the lead, the pressure is higher, the faster the flow speed is, the faster the movement frequency of the piston plate indirectly drives the piezoelectric crystal piece to rotate, and the larger and the smaller the potential difference is generated conversely; the limiting mechanism limits the sliding block in the process that when the sliding block slides into the inner groove from the sliding groove through the limiting block, as the inner groove is arranged in the sliding groove, the depth of the inner groove is larger than that of the sliding groove, the sliding block is subjected to larger resistance action in the inner groove, the sliding block stays in the inner groove, when the piezoelectric crystal piece is driven to continuously rotate along with the rotating block, the pulling force of the pulling rope on the sliding block is continuously increased, the pulling rope provides the sliding block with upward force of the vertical inner groove and the increase of the advancing force parallel to the sliding groove, the sliding block slides out of the inner groove and continuously slides in the sliding groove, and the piezoelectric crystal piece rebounds to continuously form a potential difference.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model relates to a pneumatic control system for remotely controlling and monitoring valves in an electric control way. The system can analyze abnormal data such as pipeline collision and the like, perform early warning, control the opening and closing angles of the valve and achieve the purpose of remotely controlling the valve. Pressure data and valve linkage accurately identify the internal leakage fault of the valve, reduce false alarm, improve the accuracy of fault alarm and effectively reduce the safety risk of the pipeline.

Collecting pressure and flow rate data in different time periods and processing the pressure and flow rate data through the steps of injury, if one point data exceeds or is lower than a set early warning value in the same time period, sending an alarm instruction to an alarm system by a control center for alarm processing, and when the pressure and flow rate data are abnormal, sending an instruction to an air pump by the control center, and controlling a pneumatic mechanism to perform valve closing processing; pressure data and valve linkage are acquired through the pressure detection mechanism, so that the pipeline safety risk is effectively reduced.

By limiting the length of the plugging block inserted into the air port, the relationship between the vertical length of the second air passage and the negative pressure generated by the pipeline avoids the condition that the second air passage is communicated with the lower cavity of the piston plate and simultaneously communicated with the first air passage and the upper cavity of the piston plate, and prevents the piston plate from being balanced by pressure and stopping moving; further increasing the stability of operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall structure of the present utility model.

FIG. 2 is a schematic of the pneumatic mechanism of the present utility model.

Fig. 3 is a schematic view of the pressure detection mechanism of the present utility model.

Fig. 4 is a schematic view of the internal structure of the inner case of the present utility model.

Fig. 5 is a schematic view of the disk structure of the present utility model.

Fig. 6 is a schematic cross-sectional view of a disk of the present utility model.

Fig. 7 is a partially enlarged schematic view of the structure of the present utility model.

FIG. 8 is a schematic view of a section B-B of the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, of the embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Embodiment one:

as shown in fig. 1-2, a pneumatic control system for remotely controlling and monitoring a valve comprises a valve 2 arranged in a pipeline 1, wherein the valve 2 is connected with a pneumatic mechanism 7, the pneumatic mechanism 7 is connected with an air pump 5, and the pneumatic mechanism 7 drives the valve 2 to be closed or opened;

the valve 2 is connected with a rotating rod 4, a fixing frame 3 is arranged outside the rotating rod 4, the rotating rod 4 penetrates through the pipeline 1, and the rotating rod 4 is in sealing and rotating connection with the pipeline 1; the top of the rotating rod 4 is connected with a pneumatic mechanism 7, the pneumatic mechanism 7 is connected with an air pump 5 through an air pipe 6, and the air pump 5 is arranged in a valve well 9;

the pneumatic mechanism 7 comprises a sealing cover 70, two sealing sliding plates 71 are symmetrically arranged in the sealing cover 70, an air cavity 74 is formed between the two sealing sliding plates 71, the air cavity 74 is communicated with the air pump 5 through an air pipe 6, the opposite inner sides of the two sealing sliding plates 71 are respectively connected with a rack 72, the opposite inner sides of the two racks 72 are in meshed connection with a gear 73, the gear 73 is connected with a rotating rod 4, one sides, far away from the racks 72, of the two sealing sliding plates 71 are respectively connected with at least one first spring 75, and the other ends of the first springs 75 are connected with the inner wall of the sealing cover 70.

One side of valve 2 is equipped with pressure detection mechanism 8, and pressure detection mechanism 8 can detect the pressure and the velocity of flow of valve 2 department, and pressure detection mechanism 8 is connected with data acquisition module, and acquisition module transmits the pressure information and the velocity of flow information of gathering to control center, and control center carries out data processing to it, and data processing module classifies, compares, predicts the pressure and the velocity of flow data of gathering, if surpass the early warning value of settlement and report to the police to send the instruction to the air pump, through the turned angle of turning round pole 4 control valve 2.

Embodiment two:

referring to fig. 3-8, on the basis of the first embodiment, the pressure detecting mechanism 8 is disposed on the outer surface of the pipeline 1, the pressure detecting mechanism 8 includes an outer sealing shell, an inner box 81 is disposed inside the outer sealing shell, a piston plate 811 is disposed inside the inner box 81, the piston plate 811 is in sealing sliding connection with the inner wall of the inner box 81, one side of the piston plate 811 is connected with a telescopic rod 812, the other end of the telescopic rod 812 penetrates through the inner box 81, the telescopic rod 812 is in sealing sliding connection with the inner box 81, the other end of the telescopic rod 812 is rotationally connected with a connecting rod 82, the other end of the connecting rod 82 is rotationally connected with a first rotating wheel 83 and a second rotating wheel 84, the first rotating wheel 83 and the second rotating wheel 84 are eccentrically rotationally connected with the connecting rod 82, the first rotating wheel 83 and the second rotating wheel 84 are rotationally connected with a fixing rod 85, and the sealing shell is connected with the fixing rod 85; the other sides of the first rotating wheel 83 and the second rotating wheel 84 are both connected with a rotating block 86, two piezoelectric crystal pieces 87 are symmetrically connected to the rotating block 86, the end positions of the piezoelectric crystal pieces 87 are connected with pull ropes 88, the other ends of the pull ropes 88 are connected with sliding blocks 896, the sliding blocks 896 are arranged in sliding grooves 891 of the discs 89, and the sliding blocks 896 are in sliding connection with the sliding grooves 891.

One end of the piston plate 811, which is close to the telescopic rod 812, is connected with at least one blocking piece 813, the inner wall of the inner box body 81 is provided with a first air channel 814, the lower end of the first air channel 814 is communicated with the pipeline 1, the upper end of the first air channel 814 is connected with an air port 815, and the air port 815 is connected with the top of the inner box body 81; the gas port 815 is provided corresponding to the block 813, and the block 813 can seal and shield the gas port 815.

The lower central point of piston plate 811 is connected with second spring 816, and the other end of second spring 816 is connected with the inner wall of interior box 81, and one side that piston plate 811 kept away from telescopic link 812 is connected with at least one movable rod 817, and the movable rod 817 other end runs through pipeline 1, extends to inside pipeline 1, and movable rod 817 and pipeline 1 seal sliding connection, and the second air flue 818 has been seted up to the one end that movable rod 817 is close to pipeline 1, and the diameter of second air flue 818 is greater than the diameter of first air flue 814.

The piezoelectric crystal piece 87 is connected with a rectifier through a wire, and the rectifier is connected with the data acquisition module; one side of the disc 89 is connected with a supporting rod 90, and the disc 89 is fixedly connected with the inner box 81 through the supporting rod 90.

The slide groove 891 is formed in the disc 89 along the circumferential direction, a limiting mechanism is arranged on the slide groove 891 and limits the slide block 896, so that the pull rope 88 pulls the piezoelectric crystal piece 87 to deform, and after the piezoelectric crystal piece 87 deforms to a certain extent, the limiting mechanism releases the limit on the slide block 896, and the slide block 896 continues to slide in the slide groove 891.

The limiting mechanism comprises two baffle plates 893, the two baffle plates 893 are symmetrically arranged at the outer side of the sliding groove 891, the baffle plates 893 are connected with the disc 89, a gap is arranged between the two baffle plates 893, and the gap between the two baffle plates 893 can be used for the pull rope 88 to pass through; one side of the two baffles 893, which is close to the chute 891, is connected with a limiting block 894, and the other end of the limiting block 894 extends into the chute 891; the inside of the sliding groove 891 is provided with an inner groove 895, the sliding block 896 can slide into the inner groove 895 through the limiting block 894, the inner groove 895 forms friction resistance to the sliding block 896, when the pulling force of the pull rope 88 is larger than the resistance of the inner groove 895, the sliding block 896 slides out of the inner groove 895, and the sliding block 896 slides into the sliding groove 891 again.

In the detection of the pressure detection mechanism 8, when the pipe 1 is normally ventilated, the gas flow rate in the pipe 1 is faster, the first gas passage 814 communicates the upper cavity of the piston plate 811 with the pipe 1, a negative pressure is formed above the piston plate 811, the piston plate 811 moves upward, the second gas passage 818 is isolated from the lower cavity of the piston plate 811 by being arranged at the lower end of the moving rod 817 before the movement of the piston plate 811, the block 813 contacts the gas port 815 during the upward movement of the piston plate 811, and the block 813 is inserted into the gas port 815 to form a seal, the block 813 isolates the communication between the first gas passage 814 and the pipe 1, the moving rod 817 moves upward with the piston plate 811, the second gas passage 818 is exposed to the lower cavity of the piston plate 811, the lower cavity of the piston plate 811 is subjected to the negative pressure, and by the rebound of the spring 816, the piston plate 811 moves downward, when the piston plate 811 drives the moving rod 817 to move downward to a certain amount, the second air passage 818 is separated from the inner box 81, meanwhile, the block 813 above the piston plate 811 is separated from the air port 815, the first air passage 814 is continuously communicated with the upper cavity of the piston plate 811 and the pipeline 1, the upper cavity of the piston plate 811 is continuously subjected to the negative pressure, the piston plate 811 moves upward, the reciprocating movement of the piston plate 811 is realized through the above process, the condition that the second air passage 818 is communicated with the lower cavity of the piston plate 811 and simultaneously communicated with the upper cavity of the first air passage 814 and the upper cavity of the piston plate 811 possibly occurs, the piston plate 811 is subjected to pressure balance, the movement is stopped, and in order to avoid the occurrence of the above condition, the diameter R2 of the second air passage 818 is larger than the diameter R1 of the first air passage 814; r2>1.5R1; the length of the plugging block 813 inserted into the air port 815 is L1, and the vertical length of the second air channel 818 is L2; R2/R1: l2/l1= (1.5-3.8): (1.6-2.2); in order to allow the piston plate 811 to perform a reciprocating motion, the friction force F is prevented from being excessively large, the piston plate 811 is prevented from moving, and the negative pressure F generated by the pipe 1 satisfies: 4k (L1+L2) +f is less than or equal to βF and less than 3/2k (L1+L2) +f; k is the spring coefficient of spring 816; beta is an adjusting coefficient, and the value range is 0.89-1.33.

When the piston plate 811 reciprocates, the piston plate 811 drives the connecting rod 82 and the first rotating wheel 83 and the second rotating wheel 84 to do circular motion at the same time, the first rotating wheel 83 and the second rotating wheel 84 drive the rotating blocks 86 on two sides to rotate, the rotating blocks 86 drive the piezoelectric crystal pieces 87 to rotate, the piezoelectric crystal pieces 87 rotate and are subjected to stretching traction force when rotating, the other ends of the pull ropes 88 are connected with sliding blocks 896, the sliding blocks 896 slide in sliding grooves 891 on the periphery of the discs 89, the sliding blocks 896 slide into the inner grooves 895 through the limiting mechanisms, short-time limiting is carried out on the sliding blocks 896, the pulling force of the pull ropes 88 on the piezoelectric crystal pieces 87 is increased, the piezoelectric crystal pieces 87 deform, corresponding potential differences are generated at two ends, the potential differences are sent into the rectifier and the data acquisition card through wires, the pressure is higher according to the generated potential difference and the flow velocity, the faster the movement frequency of the piston plate 811 indirectly drives the piezoelectric crystal pieces 87 to rotate, and conversely the larger potential difference is smaller; the limiting mechanism limits the sliding block 896 in such a way that when the sliding block 896 slides into the inner groove 895 from the sliding groove 891 through the limiting block 894, the sliding block 896 is continuously increased in tension of the pull rope 88 to the sliding block 896 as the rotating block 86 drives the piezoelectric crystal plate 87 to continuously rotate, the pull rope 88 provides the sliding block 896 with an upward force perpendicular to the inner groove 895 and an advancing force parallel to the sliding groove 891, the sliding block 896 slides out of the inner groove 895 and continues to slide in the sliding groove 891, and the piezoelectric crystal plate 87 continuously rebounds to form a potential difference, because the depth of the inner groove 895 is larger than that of the sliding groove 891, and the sliding block 896 is subjected to a larger resistance action in the inner groove 895.

Other technical solutions not described in detail in the present utility model are all prior art in the field, and are not described in detail herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations of the present utility model will be apparent to those skilled in the art; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The pneumatic control system for remotely controlling and monitoring the valve is characterized by comprising a valve (2) arranged in a pipeline (1), wherein the valve (2) is connected with a pneumatic mechanism (7), the pneumatic mechanism (7) is connected with an air pump (5), and the pneumatic mechanism (7) drives the valve (2) to be closed or opened;

the valve (2) is connected with a rotating rod (4), a fixing frame (3) is arranged outside the rotating rod (4), the rotating rod (4) penetrates through the pipeline (1), and the rotating rod (4) is in sealing rotation connection with the pipeline (1); the top of the rotating rod (4) is connected with a pneumatic mechanism (7), the pneumatic mechanism (7) is connected with an air pump (5) through an air pipe (6) arranged, and the air pump (5) is arranged in a valve well (9);

the pneumatic mechanism (7) comprises a sealing cover (70), two sealing sliding plates (71) are symmetrically arranged inside the sealing cover (70), an air cavity (74) is formed between the two sealing sliding plates (71), the air cavity (74) is communicated with an air pump (5) through an air pipe (6), racks (72) are connected to the inner sides of the two sealing sliding plates (71), gears (73) are connected to the inner sides of the two racks (72) in a meshed mode, the gears (73) are connected with a rotating rod (4), at least one first spring (75) is connected to one side, away from the racks (72), of the two sealing sliding plates (71), and the other end of the first spring (75) is connected with the inner wall of the sealing cover (70).

2. The pneumatic control system of the remote electric control and monitoring valve according to claim 1, wherein one side of the valve (2) is provided with a pressure detection mechanism (8), the pressure detection mechanism (8) can detect the pressure and the flow rate at the valve (2), the pressure detection mechanism (8) is connected with a data acquisition module, the acquisition module transmits the acquired pressure information and flow rate information to a control center, the control center carries out data processing on the acquired pressure information and flow rate information, the data processing module classifies, compares and predicts the acquired pressure and flow rate data, if the acquired pressure and flow rate data exceeds a set early warning value to give an alarm, the control center air pump sends an instruction, and the pneumatic mechanism drives a rotating rod (4) to control the opening and closing angle of the valve (2); the pressure detection mechanism (8) is arranged on the outer surface of the pipeline (1), the pressure detection mechanism (8) comprises an outer sealing shell, an inner box body (81) is arranged inside the outer sealing shell, a piston plate (811) is arranged inside the inner box body (81), the piston plate (811) is in sealing sliding connection with the inner wall of the inner box body (81), one side of the piston plate (811) is connected with a telescopic rod (812), the other end of the telescopic rod (812) penetrates through the inner box body (81), the telescopic rod (812) is in sealing sliding connection with the inner box body (81), the other end of the telescopic rod (812) is rotationally connected with a connecting rod (82), the other end of the connecting rod (82) is rotationally connected with a first rotating wheel (83) and a second rotating wheel (84), the first rotating wheel (83) and the second rotating wheel (84) are eccentrically and rotationally connected with the connecting rod (82), and the first rotating wheel (83) and the second rotating wheel (84) are rotationally connected with a fixed rod (85) and are connected with the sealing shell through the fixed rod (85). The rotary table is characterized in that the rotary blocks (86) are connected to the other sides of the first rotary wheel (83) and the second rotary wheel (84), two piezoelectric crystal pieces (87) are symmetrically connected to the rotary blocks (86), pull ropes (88) are connected to the end positions of the piezoelectric crystal pieces (87), sliding blocks (896) are connected to the other ends of the pull ropes (88), the sliding blocks (896) are arranged in sliding grooves (891) of the discs (89), and the sliding blocks (896) are connected with the sliding grooves (891) in a sliding mode.

3. The pneumatic control system of the remote electric control and monitoring valve according to claim 2, wherein one end of the piston plate (811) close to the telescopic rod (812) is connected with at least one block (813), a first air passage (814) is arranged on the inner wall of the inner box body (81), the lower end of the first air passage (814) is communicated with the pipeline (1), the upper end of the first air passage (814) is connected with an air port (815), and the air port (815) is connected to the top of the inner box body (81); the air port (815) is arranged corresponding to the blocking block (813), and the blocking block (813) can seal and shield the air port (815).

4. A pneumatic control system for remote control and monitoring of a valve according to claim 3, wherein a second spring (816) is connected to the center position below the piston plate (811), the other end of the second spring (816) is connected to the inner wall of the inner box (81), one side of the piston plate (811) away from the telescopic rod (812) is at least connected with a moving rod (817), the other end of the moving rod (817) penetrates through the pipeline (1) and extends into the pipeline (1), the moving rod (817) is in sealing sliding connection with the pipeline (1), one end of the moving rod (817) close to the pipeline (1) is provided with a second air passage (818), and the diameter of the second air passage (818) is larger than that of the first air passage (814).

5. A pneumatic control system for remote control and monitoring of valves according to claim 2, characterized in that said piezoelectric crystal plate (87) is connected by wires to a rectifier connected to a data acquisition module; one side of the disc (89) is connected with a supporting rod (90), and the disc (89) is fixedly connected with the inner box body (81) through the supporting rod (90).