CN112834207B

CN112834207B - Valve pressure test diagnostic device

Info

Publication number: CN112834207B
Application number: CN202110030936.9A
Authority: CN
Inventors: 张渝; 叶奕希; 潘东波
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-10-22
Anticipated expiration: 2041-01-11
Also published as: CN112834207A

Abstract

The utility model provides a novel valve pressure test diagnostic device, the on-line screen storage device comprises a base, there is the montant on the base, there is a toper section of thick bamboo on two montant upper portions, there is the inlet port on the toper section of thick bamboo of right side, there is first solenoid valve inlet port outer end, first solenoid valve has compressed air feeder, there is the ball valve between two toper sections of thick bamboos about, there is first gear on the first valve rod of ball valve, there is the roof on the base, there is drive assembly on the roof, drive assembly can drive first vertical axis and rotate, there is sector gear first vertical axis lower part, there is the butterfly valve in the toper section of thick bamboo of left side, pressure sensor links to each other with drive assembly. The opening and closing times of the ball valve in normal use are judged through the rotation times of the first vertical shaft, so that the ball valve can be replaced and maintained in time, the loss of the ball valve caused by the internal leakage phenomenon is reduced, when the ball of the ball valve is normally opened and closed, the butterfly valve can be directly opened by large air quantity to achieve an exhaust effect, and when the two sector gears are separated from the first gear, the pipeline on the right side is inflated and pressurized to simulate a real scene of the application of the ball valve.

Description

Valve pressure test diagnostic device

Technical Field

The invention belongs to the field of valve pressure testing devices, and particularly relates to a novel valve pressure testing and diagnosing device.

Background

The ball valve need carry out a series of tests to it after making out, take notes its various parameters, wherein it is very important with the factor of leaking outward to lead to leaking in the ball valve, leak in particular to be difficult to detect, because ball in the ball valve and ball socket face contact are interference fit mostly, after the switching of a plurality of times, thereby the ball surface in the ball valve has wearing and tearing and leads to leaking in, consequently the user knows about the number of times of opening and closing of ball valve is particularly important, know about the life-span of can knowing the ball valve to the number of times of opening and closing of ball valve, thereby be convenient for carry out timely maintenance and change to it, in order to reduce the loss that causes because of the valve damages, present ball valve number of times of opening and closing does in the testing process: the case of ball valve is closed the back, thereby the one end pipeline from the ball valve ventilates and makes it reach constant pressure and keep the real valve scene that dams of a period simulation, then open the ball valve again, gas runs out when opening the ball valve, then close the ball valve again, ventilate again and keep pressure, so repetition, thereby it can lead to interior hourglass to observe the ball-milling loss in how many times the switching can lead to the ball valve, present design to above-mentioned defect, because the switching number of times of ball valve is thousands of times, and preceding a plurality of times is twisted and is moved and can not make the valve damage, therefore the device of design only need to tens to hundreds of intervals carry out concrete detection can.

Disclosure of Invention

The invention provides a novel valve pressure testing and diagnosing device, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

a novel valve pressure test diagnosis device comprises a base, wherein vertical rods are symmetrically arranged on the top of the base in a bilateral mode, the vertical rods on the right side are connected with the top of the base through a moving device, the moving device can control the vertical rods on the right side to move left and right and can lock the vertical rods, the opposite ends of the upper portions of the two vertical rods are fixedly connected with conical cylinders with inner ends open through connecting rods, air inlet holes are formed in the upper side face of the conical cylinder on the right side, first electromagnetic valves are arranged at the outer ends of the air inlet holes, the first electromagnetic valves are communicated with a compression air supply device through pipelines, ball valves are arranged between the left conical cylinder and the right conical cylinder, the small ends of the left conical cylinder and the right conical cylinder are respectively inserted into the pipelines on the left side and the right side of the ball valves and are tightly matched with the pipelines on the left side and the right side, first gears are fixedly sleeved on the outer sides of the upper portions of first valve rods of the ball valves, a top plate is fixedly connected with a top plate through vertical support, the bottom surface of the top plate is rotationally connected with a first vertical shaft in a bilateral mode, the left first vertical shaft and the right first vertical shaft are connected through a first belt pulley assembly, the left first vertical shaft penetrates through the top plate upwards, a driving assembly is arranged on the left side of the top surface of the top plate and connected with the left first vertical shaft, the driving assembly can drive the first vertical shaft to rotate, sector gears are fixedly mounted on the lower portion of the first vertical shaft, the teeth of the two sector gears face to the same side, the two sector gears can be meshed and matched with the first gear, the two sector gears cannot be meshed with the first gear simultaneously, a butterfly valve is mounted inside a left conical barrel, a torsion spring is mounted at the joint of a second valve rod of the butterfly valve and a valve body, a plurality of cylindrical inner cavities are formed in a valve core of the butterfly valve, a first rotating shaft is rotatably connected between the front side wall and the rear side wall of each cylindrical inner cavity, a plurality of blades are uniformly and fixedly connected to the outer side of the first rotating shaft, and the outer ends of the blades are in sealing contact and match with the inner side walls of the corresponding cylindrical inner cavities, the inner side wall of the cylindrical inner cavity is provided with first grooves corresponding to the blades one by one, the width of each first groove is smaller than that of each blade, one side of each blade facing the side wall of the cylindrical inner cavity is provided with a second groove, a stop block is arranged in each second groove, the stop blocks are fixedly connected with the bottoms of the corresponding second grooves through first springs, the left side wall of the left conical cylinder is uniformly provided with a plurality of first through holes in an annular shape, the right side wall of the valve core of the butterfly valve is provided with a first tangential hole corresponding to each cylindrical inner cavity, one end of each first tangential hole is communicated with the inside of a left pipeline of the ball valve, the other end of each first tangential hole is communicated with the corresponding cylindrical inner cavity, the blades cannot block the first tangential holes, the left side wall of the valve core of the butterfly valve is provided with a second tangential hole corresponding to each cylindrical inner cavity, one end of each second tangential hole is communicated with the outside, and the other end of each second tangential hole is communicated with the corresponding cylindrical inner cavity, first check valve is all installed to the outer end in second tangential hole, the horizontal jar part of fixedly connected with L type cylinder body is passed and is linked to each other through the hose between the left side wall middle part of left side toper section of thick bamboo, several second through-hole has been seted up to the horizontal jar right part lateral wall of L type cylinder body, link to each other through the hose between second through-hole and the first check valve that corresponds, all cooperate the installation piston in the perpendicular jar of L type cylinder body and the horizontal jar, link to each other through the second spring between the piston in the horizontal jar of L type cylinder body and the horizontal cylinder bottom, the horizontal jar right side wall of L type cylinder body has been seted up through-hole and the cooperation of through-hole outer end is installed the second solenoid valve, the piston top in the perpendicular jar of L type cylinder body is connected with the piston rod, fixedly connected with supporting shoe behind the L type cylinder body is passed to the upper end of piston rod, pressure sensor is installed at the top of supporting shoe, pressure sensor links to each other with drive assembly, pressure sensor aligns with the bottom of left first vertical axis.

According to the novel valve pressure testing and diagnosing device, the moving device comprises a sliding rail, the sliding rail is arranged on the right side of the top of the base in the left-right direction, the sliding rail is provided with the electric sliding block in a matched mode, and the top of the electric sliding block is fixedly provided with the vertical rod.

According to the novel valve pressure testing and diagnosing device, the elastic washer is fixedly sleeved on the outer side of the conical surface of the conical cylinder.

The novel valve pressure testing and diagnosing device is characterized in that the supporting block is an elastic supporting block.

According to the novel valve pressure testing and diagnosing device, the valve core left side wall of the butterfly valve is provided with the thin pore channel corresponding to the cylindrical inner cavity between every two blades and communicated with the thin pore channel.

The invention has the advantages that: when the ball valve is used, a left end pipeline of the ball valve with the upward valve rod is sleeved on the outer side of a left side conical cylinder, then the right side conical cylinder is driven by a moving device to be inserted into a right side pipeline to fix the ball valve, a control driving assembly drives a first vertical shaft to rotate, the first vertical shaft simultaneously drives two sector gears to rotate through a first belt pulley assembly, the left sector gear is meshed with a first gear at the moment, the right sector gear is separated from the first gear, the sector gears rotate under the driving of the first vertical shaft to drive the first gear to rotate, the first gear twists the valve rod to drive a ball in the ball valve to close the pipeline (the initial state of the ball valve is that the pipeline is opened), the two sector gears are separated from the first gear at the moment, the first electromagnetic valve is opened while the pipeline is closed, air continuously enters the right side conical cylinder, the first electromagnetic valve is closed after the constant pressure in the pipeline is kept, and the constant pressure in the pipeline is kept for a period of time, if the ball valve has internal leakage, the air in the right pipeline enters the left pipeline at a constant speed and then enters each cylindrical inner cavity from the first tangential hole, when the air enters the cylindrical inner cavities at a constant speed, the air pushes the blades so as to send the air into the L-shaped cylinder body through the second tangential hole, liquid is filled between two pistons in the L-shaped cylinder body, the piston in the transverse cylinder of the L-shaped cylinder body moves leftwards to stretch the first spring, the piston in the vertical cylinder of the L-shaped cylinder body drives the piston rod to move upwards until the pressure sensor extrudes the bottom of the first vertical shaft, when the pressure detected by the pressure sensor is higher than a preset value, the pressure sensor sends a signal to the control terminal, the control terminal controls the driving assembly to stop working, the switching times of the ball valve is the initial fixed value plus the rotation number of the first vertical shaft, then a new ball valve is replaced to continue the test, determining a final value through comprehensive parameters of a plurality of groups of ball valves, and simultaneously opening and deflating a second electromagnetic valve to enable a second spring to drive a piston to reset for use next time; if the ball valve is still intact at the moment, the air in the right pipeline cannot enter the left pipeline, the driving assembly continues to drive the first vertical shaft to slowly rotate until the left sector gear is far away from the first gear and the right sector gear is meshed with the first gear, the right sector gear and the first gear are in matched transmission so as to push the ball of the ball valve to rotate and open the pipeline, a large amount of air in the right pipeline enters the left pipeline at a high speed, the air is large in amount and high in speed so as to open a valve core of the butterfly valve, the torsion spring is twisted, the air enters the outside from the first through hole, meanwhile, the high-speed air enters the cylindrical inner cavity from the first tangential hole so as to push the blade, the thrust force borne by the blade is very large, and therefore the stopper in the second groove is subjected to a large centrifugal force so as to move outwards to stretch the first spring, the stopper is blocked when being clamped into the first groove, so that the blade cannot rotate, air in the first tangential hole can not enter the L-shaped cylinder body through the cylindrical inner cavity, when the air in the pipeline is discharged, the torsion spring drives the valve core of the butterfly valve to be closed again, meanwhile, the blade in the cylindrical inner cavity does not bear thrust any more, the second spring drives the stop block to reset, and at the moment, the air entering the cylindrical inner cavity flows back from the first tangential hole; the driving assembly drives the first vertical shaft to continue rotating, the sector gear on the right side is far away from the first gear, the sector gear on the left side is gradually meshed with the first gear and drives the first valve rod of the ball valve to rotate to close the pipeline, and the operation is repeated, so that the inner leakage phenomenon can be generated in the ball valve after the ball valve is opened and closed for a plurality of times; the invention has compact structure and reasonable design, clamps the ball valve through two conical cylinders, simultaneously leads the conical cylinder on the right side to be capable of air inlet and keep the pressure in the pipeline on the right side, and installs the modified butterfly valve in the conical cylinder on the left side, leads the ball valve to be capable of internal leakage, the pressure sensor rises to abut against the first vertical shaft, then controls the driving component to stop the first vertical shaft, further judges the opening and closing times of normal use of the ball valve through the rotation times of the first vertical shaft, accurately predicts the service life of the ball valve, leads the ball valve to be capable of timely replacing and maintaining, reduces the loss of the ball valve caused by the internal leakage phenomenon, when the ball of the ball valve is normally opened and closed, the air quantity is large, can directly open the butterfly valve to achieve the exhaust effect, and ultrahigh-speed air can not enter the L-shaped cylinder body, prevents the false touch, and simultaneously leads the sector gears on the left side and the right side to be respectively and the first gear to be alternatively meshed, the ball valve can be closed when the right sector gear is meshed with the first gear, the ball valve is opened when the left sector gear is meshed with the first gear, and when the two sector gears are separated from the first gear, the right pipeline is inflated and pressurized to simulate a real scene of the application of the ball valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is a schematic view of the A-direction partial structure of FIG. 1; FIG. 3 is an enlarged view of I of FIG. 1; fig. 4 is an enlarged view of ii of fig. 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A novel valve pressure test diagnosis device comprises a base 1, montant 2 is symmetrically installed on the top of the base 1 in a left-right mode, the montant 2 on the right side is connected with the top of the base 1 through a moving device, the moving device can control the montant 2 on the right side to move left and right and can lock the montant 2, the opposite ends of the upper portions of the two montant 2 are fixedly connected with conical cylinders 3 with inner end openings through connecting rods, air inlet holes 4 are formed in the upper side face of the conical cylinder 3 on the right side, first electromagnetic valves 5 are installed at the outer ends of the air inlet holes 4, the first electromagnetic valves 5 are communicated with a compression air supply device through pipelines, a ball valve 6 is arranged between the left conical cylinder 3 and the right conical cylinder 3, the small ends of the left conical cylinder 3 and the right conical cylinder 3 are respectively inserted into the left pipeline 61 and the right pipeline 61 of the ball valve 6 and are tightly matched with the left conical cylinder, a first gear 7 is fixedly sleeved on the outer side of the upper portion of a first valve rod 60 of the ball valve 6, a top of the base 1 is fixedly connected with a top plate 8 through a vertical support 37, the bottom surface of the top plate 8 is bilaterally and symmetrically connected with first vertical shafts 9 in a rotating mode, the left first vertical shaft 9 and the right first vertical shaft 9 are connected through a first belt pulley assembly 10, the left first vertical shaft 9 penetrates through the top plate 8 upwards, the left side of the top surface of the top plate 8 is provided with a driving assembly connected with the left first vertical shaft 9, the driving assembly can drive the first vertical shaft 9 to rotate, sector gears 12 are fixedly arranged on the lower portion of the first vertical shaft 9, teeth of the two sector gears 12 face to the same side, the two sector gears 12 can be meshed and matched with the first gear 7, the two sector gears 12 cannot be meshed with the first gear 7 at the same time, a butterfly valve 13 is arranged inside a conical barrel 3 on the left side, a torsion spring is arranged at the joint of a second valve rod 131 of the butterfly valve 13 and a valve body 132, a plurality of cylindrical inner cavities 14 are arranged in a valve core 133 of the butterfly valve 13, and a first rotating shaft 15 is rotatably connected between the front side wall and the rear side wall of the cylindrical inner cavities 14, a plurality of blades 16 are uniformly and fixedly connected to the outer side of the first rotating shaft 15, the outer ends of the blades 16 are in sealing contact with and matched with the inner side wall of the corresponding cylindrical inner cavity 14, first grooves 17 are respectively formed in the inner side wall of the cylindrical inner cavity 14 corresponding to the blades 16, the width of each first groove 17 is smaller than that of each blade 16, a second groove 18 is formed in one side of each blade 16 facing the side wall of the cylindrical inner cavity 14, a stop 19 is arranged in each second groove 18, the bottoms of the stop 19 and the bottoms corresponding to the second grooves 18 are fixedly connected through first springs 20, a plurality of first through holes 23 are uniformly formed in the left side wall of the left conical barrel 3 in an annular manner, a first tangential hole 21 is formed in the right side wall of the valve core 133 of the butterfly valve 13 corresponding to each cylindrical inner cavity 14, one end of each first tangential hole 21 is communicated with the inside of the left side pipeline 61 of the ball valve 6, and the other end of each first tangential hole 21 is communicated with the corresponding cylindrical inner cavity 14, the blades 16 can not block the first tangential holes 21, the left side wall of the valve core 133 of the butterfly valve 13 is provided with a second tangential hole 51 corresponding to each cylindrical inner cavity 14, one end of the second tangential hole 51 is communicated with the outside, the other end of the second tangential hole 51 is communicated with the corresponding cylindrical inner cavity 14, the outer end of the second tangential hole 51 is provided with a first one-way valve 22, the middle part of the left side wall of the left conical cylinder 3 passes through and is fixedly connected with a transverse cylinder part of the L-shaped cylinder body 24, the right outer side wall of the transverse cylinder of the L-shaped cylinder body 24 is provided with a plurality of second through holes 25, the second through holes 25 are connected with the corresponding first one-way valves 22 through hoses 26, the vertical cylinder and the transverse cylinder of the L-shaped cylinder body 24 are provided with pistons 27 in a matched manner, the pistons 27 in the transverse cylinder of the L-shaped cylinder body 24 are connected with the bottom of the transverse cylinder through second springs 28, the right side wall of the transverse cylinder of the L-shaped cylinder body 24 is provided with a through hole, and the outer end of the through hole is provided with a second electromagnetic valve 29 in a matched manner, the top of the piston 27 in the vertical cylinder of the L-shaped cylinder body 24 is connected with a piston rod 30, the upper end of the piston rod 30 penetrates through the L-shaped cylinder body 24 and then is fixedly connected with a supporting block 31, the top of the supporting block 31 is provided with a pressure sensor 32, the pressure sensor 32 is connected with a driving assembly, and the pressure sensor 32 is aligned with the bottom of the left first vertical shaft 9. When the ball valve is used, a left end pipeline 61 of the ball valve with an upward valve rod is sleeved outside a left conical cylinder 3, then the right conical cylinder 3 is driven by a moving device to be inserted into a right pipeline 61 to fix the ball valve 6, a control driving assembly drives a first vertical shaft 9 to rotate, the first vertical shaft 9 drives two sector gears 12 to rotate simultaneously through a first belt pulley assembly 10, the left sector gear 12 is meshed with a first gear 7, the right sector gear 12 is separated from the first gear 7, the sector gears 12 are driven by the first vertical shaft 9 to rotate so as to drive the first gear to rotate, the first gear 7 screws the valve rod so as to drive a ball 63 in the ball valve 6 to close the pipeline 61 (the ball 63 of the ball valve 6 is in an initial state of opening the pipeline 61), the two sector gears 12 are separated from the first gear 7, the first electromagnetic valve 5 is opened when the pipeline 61 is closed, air is continuously fed into the right conical barrel 3, after the constant pressure in the pipeline 61 is kept, the first electromagnetic valve 5 is closed, the pressure in the pipeline 61 is kept constant for a period of time, if the ball valve has an inner leakage phenomenon, air in the right pipeline 61 enters the left pipeline at a constant speed and then enters each cylindrical inner cavity 14 from the first tangential hole 21, when the air enters the cylindrical inner cavities 14 at the constant speed, the air pushes the blades 16 to send the air into the L-shaped cylinder body through the second tangential hole, liquid is filled between two pistons in the L-shaped cylinder body, the piston 27 in the transverse cylinder of the L-shaped cylinder body moves leftwards to stretch the first spring 20, the piston 27 in the vertical cylinder of the L-shaped cylinder body drives the piston rod 30 to move upwards until the pressure sensor is extruded with the bottom of the first vertical shaft 9, and when the pressure detected by the pressure sensor is higher than a preset value, the pressure sensor sends a signal to the control terminal, the control terminal controls the driving assembly to stop working, the opening and closing times of the ball valve are the initial fixed value and the number of rotation turns of the first vertical shaft 9, then a new ball valve is replaced for continuous testing, the final value is determined through the comprehensive parameters of a plurality of groups of ball valves, and meanwhile, the second electromagnetic valve is opened and deflated to enable the second spring to drive the piston to reset for next use; if the ball valve is still intact at this time, the air in the right side pipe 61 cannot enter the left side pipe 61, the driving assembly continues to drive the first vertical shaft 9 to rotate slowly until the left side sector gear 12 is far away from the first gear 7 and the right side sector gear 12 is meshed with the first gear, the right side sector gear 12 is in matched transmission with the first gear so as to push the ball of the ball valve to rotate to open the pipe 61, a large amount of air in the right side pipe enters the left side pipe 61 at a high speed, the air is large in amount and high in speed so as to open the valve core of the butterfly valve 13, the torsion spring is twisted, the air enters the outside from the first through hole 23, meanwhile, the high-speed air enters the cylindrical cavity from the first tangential hole to push the blade, the thrust force borne by the blade 16 is large, so that the stopper in the second groove 18 is subjected to a large centrifugal force so as to move outwards to stretch the first spring, and the stopper is blocked in the first groove 17, the blades 16 can not rotate, air in the first tangential hole can not enter the L-shaped cylinder body through the cylindrical inner cavity 14, when the air in the pipeline 61 is discharged, the torsion spring drives the valve core of the butterfly valve 13 to be closed again, meanwhile, the blades in the cylindrical inner cavity 14 are not pushed any more, the second spring 28 drives the stop block to reset, and at the moment, the air entering the cylindrical inner cavity 14 flows back from the first tangential hole; the driving assembly drives the first vertical shaft 9 to continue rotating, the sector gear 12 on the right side is far away from the first gear 7, the sector gear 12 on the left side is gradually meshed with the first gear 7 and drives the first valve rod 60 of the ball valve to rotate to close the pipeline, and the operation is repeated, so that the inner leakage phenomenon can be generated in the ball valve after the ball valve is opened and closed for a plurality of times; the invention has compact structure and reasonable design, clamps the ball valve through the two conical cylinders 3, simultaneously leads the conical cylinder on the right side to be capable of air inlet and keeps the pressure in the pipeline 61 on the right side, and the conical cylinder on the left side is internally provided with the improved butterfly valve, leads the pressure sensor to rise and abut against the first vertical shaft when the ball valve has the internal leakage phenomenon, then controls the driving component to stop the rotation of the first vertical shaft 9, further judges the normal use opening and closing times of the ball valve through the rotation times of the first vertical shaft, accurately predicts the service life of the ball valve, leads the ball valve to be capable of being replaced and maintained in time, reduces the loss of the ball valve caused by the internal leakage phenomenon, when the ball of the ball valve is normally opened and closed, leads the air quantity to be larger, can directly open the butterfly valve 13 to achieve the exhaust effect, and the super-high-speed air can not enter the L-shaped cylinder body to prevent the false touch, and simultaneously leads the sector gears 12 on the left side and the right side to be respectively and the first gear 7 to be alternatively meshed, the ball valve can be closed when the right sector gear 12 is meshed with the first gear, the ball valve is opened when the left sector gear 12 is meshed with the first gear, and when the two sector gears are separated from the first gear 7, the right pipeline 61 is inflated and pressurized to simulate a real scene of the application of the ball valve.

Specifically, as shown in the figure, the moving device according to the present embodiment includes a slide rail 33, the slide rail 33 disposed in the left-right direction is installed on the right side of the top of the base 1, the electric slider 34 is installed on the slide rail 33 in a matching manner, and the vertical rod 2 is fixedly installed on the top of the electric slider 34. The left and right movement of the electric sliding block 34 drives the conical cylinder 3 on the right side to clamp and loosen the ball valve, so that the operation is simple, and the clamping and the loosening are both convenient and fast.

Specifically, as shown in the figure, the elastic washer is fixedly sleeved outside the conical surface of the conical cylinder 3 in the embodiment. The elastic washer can increase the friction between the conical cylinder 3 and the ball valve pipeline, so that the clamping is more reliable and stable.

Further, as shown in the drawings, the supporting block 31 in this embodiment is an elastic supporting block. The supporting block 31 is an elastic supporting block so that the supporting block is not easily damaged when contacting the first vertical shaft.

Furthermore, as shown in the figure, the left side wall of the valve core of the butterfly valve 13 according to the embodiment is provided with a thin hole 36 corresponding to the cylindrical inner cavity 14 between each two vanes 16 and communicated with the same. When the valve core of the ball valve is opened at the beginning, a small amount of air possibly enters the cylindrical inner cavity and pushes the blades 16 to rotate by a small angle, the air cannot enter the L-shaped cylinder body from the second tangential hole, then the valve core of the butterfly valve is flushed by a large amount of subsequent air to enter the outside, and after the ball valve is completely closed, the air in the cylindrical inner cavity slowly flows out from the thin hole channel 36.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A valve pressure test diagnostic device characterized by: comprises a base (1), the top of the base (1) is bilaterally symmetrically provided with vertical rods (2), the vertical rods (2) on the right side are connected with the top of the base (1) through a moving device, the moving device can control the vertical rods (2) on the right side to move left and right and can lock the vertical rods, one ends, opposite to the upper parts, of the two vertical rods (2) are fixedly connected with conical cylinders (3) with inner end openings through connecting rods, the upper side surfaces of the conical cylinders (3) on the right side are provided with air inlet holes (4), the outer ends of the air inlet holes (4) are provided with first electromagnetic valves (5), the first electromagnetic valves (5) are communicated with a compressed air supply device through pipelines, a ball valve (6) is arranged between the two conical cylinders (3) on the left side and the right side, the small ends of the two conical cylinders (3) on the left side and the right side are respectively inserted into pipelines (61) on the left side and the right side of the ball valve (6) and are tightly matched with the same, a first gear (7) is fixedly sleeved on the outer side of the upper part of a first valve rod (60) of the ball valve (6), the top of the base (1) is fixedly connected with a top plate (8) through a vertical support (37), the bottom surface of the top plate (8) is bilaterally and symmetrically connected with first vertical shafts (9) in a rotating mode, the left vertical shaft and the right vertical shaft (9) are connected through a first belt pulley component (10), the left first vertical shaft (9) upwards penetrates through the top plate (8), a driving component is arranged on the left side of the top surface of the top plate (8) and connected with the left first vertical shaft (9), the driving component can drive the first vertical shaft (9) to rotate, sector gears (12) are fixedly mounted on the lower portions of the left vertical shaft and the right vertical shaft (9), teeth of the two sector gears (12) face to the same side, the two sector gears (12) can be meshed with the first gear (7) independently, the two sector gears (12) cannot be meshed with the first gear (7) simultaneously, a butterfly valve (13) is mounted inside a left conical barrel (3), the torsion spring is installed at the joint of a second valve rod (131) of the butterfly valve (13) and the valve body (132), a plurality of cylindrical inner cavities (14) are formed in a valve core (133) of the butterfly valve (13), first rotating shafts (15) are rotatably connected between the front side wall and the rear side wall of each cylindrical inner cavity (14), a plurality of blades (16) are uniformly and fixedly connected to the outer sides of the first rotating shafts (15), the outer ends of the blades (16) are in sealing contact fit with the inner side walls of the corresponding cylindrical inner cavities (14), first grooves (17) are formed in the inner side walls of the cylindrical inner cavities (14) corresponding to the plurality of blades (16) one by one, the width of each first groove (17) is smaller than that of each blade (16), second grooves (18) are formed in one side, facing the side walls of the cylindrical inner cavities (14), of the blades (16), stop blocks (19) are arranged in the second grooves (18), and the bottoms of the stop blocks (19) and the corresponding second grooves (18) are fixedly connected through first springs (20), a plurality of first through holes (23) are uniformly and annularly formed in the left side wall of the left side conical barrel (3), a first tangential hole (21) is formed in the right side wall of a valve core (133) of the butterfly valve (13) corresponding to each cylindrical inner cavity (14), one end of each first tangential hole (21) is communicated with the inside of a left side pipeline (61) of the ball valve (6), the other end of each first tangential hole (21) is communicated with the corresponding cylindrical inner cavity (14), the first tangential hole (21) cannot be blocked by the blade (16), a second tangential hole (51) is formed in the left side wall of the valve core (133) of the butterfly valve (13) corresponding to each cylindrical inner cavity (14), one end of each second tangential hole (51) is communicated with the outside, the other end of each second tangential hole (51) is communicated with the corresponding cylindrical inner cavity (14), a first check valve (22) is installed at the outer end of each second tangential hole (51), the middle part of the left side wall of the left side conical barrel (3) penetrates through and is fixedly connected with a transverse cylinder part of the L-shaped cylinder body (24), a plurality of second through holes (25) are formed in the outer side wall of the right portion of a transverse cylinder of an L-shaped cylinder body (24), the second through holes (25) are connected with corresponding first one-way valves (22) through hoses (26), pistons (27) are installed in a vertical cylinder and a transverse cylinder of the L-shaped cylinder body (24) in a matched mode, the pistons (27) in the transverse cylinder of the L-shaped cylinder body (24) are connected with the bottom of the transverse cylinder through second springs (28), the right side wall of the transverse cylinder of the L-shaped cylinder body (24) is provided with through holes, second electromagnetic valves (29) are installed at the outer ends of the through holes in a matched mode, the top of the pistons (27) in the vertical cylinder of the L-shaped cylinder body (24) is connected with a piston rod (30), the upper end of the piston rod (30) penetrates through a supporting block (31) fixedly connected with the rear portion of the L-shaped cylinder body (24), a pressure sensor (32) is installed at the top of the supporting block (31), the pressure sensor (32) is connected with a driving assembly, and the pressure sensor (32) is aligned with the bottom of a left first vertical shaft (9).

2. The valve pressure test diagnostic apparatus of claim 1, wherein: the mobile device comprises a sliding rail (33), the sliding rail (33) arranged in the left-right direction is installed on the right side of the top of the base (1), an electric sliding block (34) is installed on the sliding rail (33) in a matched mode, and a vertical rod (2) is fixedly installed on the top of the electric sliding block (34).

3. A valve pressure test diagnostic apparatus as set forth in claim 1 or 2, wherein: an elastic gasket is fixedly sleeved on the outer side of the conical surface of the conical cylinder (3).

4. The valve pressure test diagnostic apparatus of claim 1, wherein: the supporting block (31) is an elastic supporting block.

5. The valve pressure test diagnostic apparatus of claim 1, wherein: the left side wall of the valve core of the butterfly valve (13) is provided with a thin pore channel (36) corresponding to the cylindrical inner cavity (14) between every two blades (16) and communicated with the thin pore channel.