CN119756729A - Air tightness detection system of valve - Google Patents
Air tightness detection system of valve Download PDFInfo
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- CN119756729A CN119756729A CN202510261269.3A CN202510261269A CN119756729A CN 119756729 A CN119756729 A CN 119756729A CN 202510261269 A CN202510261269 A CN 202510261269A CN 119756729 A CN119756729 A CN 119756729A
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Abstract
本发明涉及阀门检测技术领域，具体涉及一种阀门的气密性检测系统，包括有环形测试架，所述环形测试架的中间设置有环形导轨，还包括：单元测试座，多个单元测试座沿环形导轨环绕设置，所述单元测试座与所述环形导轨之间滑动连接，所述单元测试座的中间设置有中心导向槽，所有中心导向槽的轴向中心线均交汇于所述环形导轨的中心点；测试封闭座，嵌合滑动设置于所述中心导向槽的内侧。本发明的环形导轨上环绕设置有多个单元测试座，每个单元测试座都可以单独封闭阀门的一处接口并对其进行加压测试，而每个单元测试座又可以沿环形导轨单独滑动调节角度位置，以便于对被测阀门的接口相互对齐，从而便于对多接口的阀门的所有接口同时进行封闭测试。
The present invention relates to the field of valve detection technology, and specifically to a valve air tightness detection system, including an annular test frame, an annular guide rail is arranged in the middle of the annular test frame, and also includes: a unit test seat, a plurality of unit test seats are arranged around the annular guide rail, the unit test seat is slidably connected to the annular guide rail, a center guide groove is arranged in the middle of the unit test seat, and the axial center lines of all the center guide grooves intersect at the center point of the annular guide rail; a test closing seat, which is slidably arranged on the inner side of the center guide groove. A plurality of unit test seats are arranged around the annular guide rail of the present invention, and each unit test seat can individually close an interface of a valve and perform a pressure test on it, and each unit test seat can slide and adjust the angle position individually along the annular guide rail, so as to align the interfaces of the tested valve with each other, thereby facilitating the simultaneous closing test of all interfaces of the valve with multiple interfaces.
Description
Technical Field
The invention relates to the technical field of valve detection, in particular to an air tightness detection system of a valve.
Background
The valve is one of the key components essential in industrial production, and is widely applied to a plurality of industries such as chemical industry, petroleum, natural gas, electric power, pharmacy and the like, and the main function of the valve is to control the flow and direction of fluid, such as liquid or gas, so that the sealing performance of the valve directly influences the safety and efficiency of production, especially in the environment of high pressure, high temperature or corrosive medium, the air tightness of the valve is more important, and the air tightness of the valve is generally tested by connecting the valve into corresponding detection equipment and applying pressure higher than working pressure.
The conventional valve air tightness detection device is generally symmetrically provided with two detection ports for connecting the ports at two ends of the closed valve and judging the sealing performance of the valve by detecting the pressure change at two sides under pressure, however, the device has certain limitation, especially for valves with multiple ports, such as a three-way valve, a four-way valve and the like, the conventional detection device can only seal two main ports of the valve at the same time, and other non-sealed ports need additional measures for sealing, under the condition, the flange sealing cover and the like need to be used for sealing the additional ports before detection, and all ports cannot be simultaneously connected and sealed, so that the position and the ports of the valve need to be adjusted for many times, and the overall detection efficiency is low.
Disclosure of Invention
Therefore, the present invention is directed to a valve air tightness detection system, which solves the problems that the existing valve air tightness detection device can only close two main interfaces of a valve at the same time, and for a valve with multiple interfaces, all interfaces cannot be connected and sealed and detected at the same time, and the position and the interfaces of the valve need to be adjusted for multiple times, so that the overall detection efficiency is low.
Based on the above object, the present invention provides a system for detecting the air tightness of a valve, which comprises a horizontal test frame and an annular test frame above the horizontal test frame, and further comprises:
The unit test seats are arranged along the annular test frame in a surrounding manner, the unit test seats are connected with the annular test frame in a sliding manner, a central guide groove is formed in the middle of each unit test seat, and the axial central lines of all the central guide grooves are converged at the central point of the annular test frame;
The test sealing seat is embedded and slidably arranged on the inner side of the central guide groove, a translation hydraulic push rod is connected to the outer side of the test sealing seat, and the translation hydraulic push rod pushes the test sealing seat to slide back and forth along the central guide groove through expansion and contraction;
The detection communicating pipe is connected and arranged in the middle of the test sealing seat, the front end of the detection communicating pipe is provided with a communication opening, and the rear end of the detection communicating pipe is sequentially connected and provided with a barometer, an adjusting valve and a detection pressurizing air pump;
the elastic air bag is nested and surrounds the outer side of the detection communicating pipe, and a closed pressurizing air pump is connected with the outer side of the elastic air bag.
Further, the middle of annular test frame is encircled and is provided with annular guide rail, sliding connection is passed through between annular guide rail and the annular test frame to the unit test seat, the middle of annular guide rail is encircled and is provided with the regulation ring gear, the inboard connection of unit test seat is provided with accommodate motor, accommodate motor's axle head connection is provided with adjusting gear, adjusting gear with intermeshing connects between the regulation ring gear, accommodate motor passes through adjusting gear and adjusts ring gear drive unit test seat and encircles the removal around annular test frame center department along annular guide rail.
Further, the outside nested slip that detects communicating pipe is provided with central sliding sleeve, the outside of central sliding sleeve encircles and is provided with the sealed push pedal, sealed push pedal passes through central sliding sleeve and detects communicating pipe sliding connection, sealed push pedal is located the rear side of elastic air bag, sealed push pedal is along detecting communicating pipe and pushing extrusion elastic air bag to synchronous when moving to elastic air bag one side.
Further, the back connection of sealed push pedal is provided with the slip guide bar, the outside connection of test seal seat is provided with the direction sliding sleeve, sealed push pedal passes through slip guide bar and direction sliding sleeve and test seal seat sliding connection, the outside connection of test seal seat is provided with the hydraulic telescoping rod, both ends are respectively with sealed push pedal and test seal seat interconnect around the hydraulic telescoping rod.
Further, an air bag mounting sleeve is further arranged between the elastic air bag and the detection communicating pipe, the elastic air bag is fixedly connected with the air bag mounting sleeve, nested threads are arranged on the inner side face of the air bag mounting sleeve in a surrounding mode, connecting threads are arranged on the outer side face of the detection communicating pipe in a surrounding mode, the nested threads and the connecting threads are directly matched with each other, and the air bag mounting sleeve is connected with the detection communicating pipe in a detachable and closed mode through the nested threads and the connecting threads.
Further, the round guide seats are symmetrically arranged on the front side and the rear side of the annular test frame at intervals, pneumatic telescopic rods are horizontally connected and arranged at the centers of the round guide seats, the pneumatic telescopic rods are close to one ends of the annular test frame and are connected and provided with detection clamping seats, pressure gauges are further arranged between the pneumatic telescopic rods and the detection clamping seats, the pneumatic telescopic rods arranged on the two sides drive the corresponding detection clamping seats to be close to each other so as to clamp and fix tested valves, the bottom of the annular test frame is provided with a connecting rotary table, and the annular test frame is connected with the horizontal test frame in a rotary mode through the connecting rotary table.
Further, the intermediate junction that detects the grip slipper is provided with the frock gripping head, the front that detects the grip slipper is provided with the gomphosis spread groove, the back of frock gripping head is provided with the gomphosis connecting block, the gomphosis spread groove with mutually support between the gomphosis connecting block and set up, the frock gripping head passes through gomphosis connecting block and gomphosis connecting groove and detects the grip slipper and slide and dismantle the connection.
Further, the outside nested slip of circular guide holder is provided with the protection seal tube, the centre of protection seal tube is provided with transparent window, circular guide holder with be provided with the interval sealing ring between the protection seal tube, the outside connection of protection seal tube is provided with synchronous swivel nut, the middle nested connection of synchronous swivel nut is provided with the translation screw rod, the axle head connection of translation screw rod is provided with translation motor, translation motor passes through the synchronous reverse removal of protection seal tube that translation screw rod and synchronous swivel nut drive bilateral symmetry set up, both sides all encircle around the annular test frame and are provided with the gomphosis seal groove, the protection seal tube with size mutually support between the gomphosis seal groove.
Further, the outer end connection of governing valve is provided with the connection gas-supply pipe, the outer end connection of connection gas-supply pipe is provided with the pressurization gas holder, and all governing valves all communicate each other through connection gas-supply pipe and pressurization gas holder, detect the pressurization air pump with the bottom interconnect of pressurization gas holder, detect communicating pipe with the top interconnect of pressurization gas holder, the top of pressurization gas holder is still connected and is provided with the gas port, the inside nested slip of pressurization gas holder is provided with the interval piston, the interval piston will the inside interval of pressurization gas holder is divided into upper and lower two parts, the pressurization gas holder is located the upper portion part of interval piston stores and is provided with the nitric oxide.
Further, the circular guide holder is close to the middle of the vertical plane of one side of the annular test frame and is uniformly provided with a plurality of laser transmitters and laser receivers, and the laser transmitters and the laser receivers are arranged in one-to-one correspondence.
The valve air tightness detection system has the beneficial effects that the valve air tightness detection system provided by the invention can drive the test sealing seat to move through the translation hydraulic push rod so as to enable the test sealing seat to be connected with the interfaces of the valve, the test communication pipe in the middle of the test sealing seat is positioned at the interfaces of the valve, the elastic air bags are arranged on the outer sides of the test communication pipe in a surrounding manner, the elastic air bags can be inflated to seal corresponding valve interfaces, and simultaneously can be used as a sealing structure of the valve interfaces, so that the valve air tightness detection system is convenient to adapt to valve interfaces with different sizes and shapes, is convenient and quick to seal, is convenient to assemble and disassemble, and is convenient to seal, the test communication pipe is communicated with the pressurized air storage tank through the adjustment valve and the connection air pipe, the pressurized air pump is further used for conveying pressurized air to the pressurized air storage tank through the adjustment valve and the connection air pipe, so as to pressurize the interfaces of the valve through the detection communication pipe, and the air tightness of the valve can be detected through the numerical value of the corresponding air pressure gauge.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a front side structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a rear structure of an embodiment of the present invention;
FIG. 3 is a schematic view of a horizontal test rack according to an embodiment of the present invention;
FIG. 4 is a schematic view of a horizontal test rack according to an embodiment of the present invention;
FIG. 5 is a schematic view of a horizontal test rack according to an embodiment of the present invention;
FIG. 6 is a schematic view of the structure of a circular guide rail according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a unit test socket according to an embodiment of the invention;
FIG. 8 is a schematic view of a test enclosure according to an embodiment of the invention;
Fig. 9 is a schematic structural view of a circular guide holder according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a pressurized air tank according to an embodiment of the present invention.
Marked in the figure as:
1. Horizontal test rack, 101, connection turntable, 102, annular test rack, 103, embedded seal groove, 104, annular guide rail, 105, adjusting toothed ring, 2, unit test seat, 201, center guide groove, 202, translational hydraulic push rod, 203, adjusting motor, 204, adjusting gear, 3, test seal seat, 301, guiding sliding sleeve, 302, connecting gas pipe, 303, pressurizing gas storage tank, 304, interval piston, 305, detected pressurizing gas pump, 306, gas filling port, 4, detected communicating pipe, 401, barometer, 402, connecting screw, 403, communicating opening, 404, adjusting valve, 5, elastic air bag, 501, air bag mounting sleeve, 502, nested screw, 503, closed pressurizing gas pump, 504, sealing push plate, 505, center sliding sleeve, 506, sliding guide rod, 507, hydraulic telescopic rod, 6, circular guide seat, 601, interval sealing ring, 602, translational screw rod, 603, translational motor, 604, laser transmitter, 605, laser receiver, 7, pneumatic telescopic rod, detecting clamping seat, 702, embedded connecting groove, 703, pressure meter, 704, clamping head, 705, sealing tool, sealing sleeve, 502, sealing sleeve, 801, sealing vent pipe, sealing window, 803, sealing fan, sealing vent pipe, sealing window, and blow-down pipe.
Detailed Description
The present invention will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1,2, 3,4,5, 6, 7, 8, 9 and 10, a valve air tightness detection system includes a horizontal test frame 1 and an annular test frame 102 above the horizontal test frame 1, and further includes:
the unit test seats 2 are arranged along the annular test frame 102 in a surrounding manner, the unit test seats 2 are connected with the annular test frame 102 in a sliding manner, a central guide groove 201 is arranged in the middle of the unit test seats 2, and the axial central lines of all the central guide grooves 201 are intersected at the central point of the annular test frame 102;
The test sealing seat 3 is embedded and slidingly arranged on the inner side of the central guide groove 201, a translation hydraulic push rod 202 is connected to the outer side of the test sealing seat 3, and the translation hydraulic push rod 202 drives the test sealing seat 3 to slide back and forth along the central guide groove 201 through expansion and contraction;
the detection communicating pipe 4 is connected and arranged in the middle of the test sealing seat 3, a communication opening 403 is formed in the front end of the detection communicating pipe 4, and a barometer 401, an adjusting valve 404 and a detection pressurizing air pump 305 are sequentially connected and arranged at the rear end of the detection communicating pipe 4;
the elastic air bag 5 is nested and arranged on the outer side of the detection communicating pipe 4 in a surrounding mode, and a closed pressurizing air pump 503 is connected to the outer side of the elastic air bag 5.
In this embodiment, each unit test seat 2 of the system is independently provided with a test sealing seat 3, the translational hydraulic push rod 202 can drive the test sealing seat 3 to move so as to enable the test sealing seat 3 to be connected with the interfaces of the valves, at this time, the detection communication pipe 4 in the middle of the test sealing seat 3 is positioned at the interfaces of the valves, the outer side of the detection communication pipe 4 is circumferentially provided with an elastic air bag 5, the elastic air bag 5 is connected with the sealing pressurizing air pump 503 through a flexible pipeline, the sealing pressurizing air pump 503 can inflate the elastic air bag 5 at this time, so that the elastic air bag 5 is integrally inflated to seal the corresponding valve interfaces, the valve interfaces with different sizes and shapes can be adapted through the sealing structure of the inflatable elastic air bag 5 as the valve interfaces, and the valve interfaces are inflated when connected and deflated when detached and opened, thereby being more convenient and rapid when connected in a sealing manner and detached, the detecting communicating pipe 4 is mutually communicated with the detecting pressurizing air pump 305 through the adjusting valve 404, the detecting pressurizing air pump 305 is used for conveying pressurized air to the detecting communicating pipe 4 so as to pressurize the interface of the valve through the detecting communicating pipe 4, the adjusting valve 404 is used for controlling whether the corresponding detecting communicating pipe 4 is pressurized or not, and meanwhile, the air tightness of the valve can be detected by matching with the numerical value detecting pressure difference and the numerical value change of the corresponding barometer 401, and as the annular guide rail 104 of the system is circularly provided with a plurality of unit test seats 2, each unit test seat 2 can independently seal the interface of one valve and carry out pressurizing test on the valve, and each unit test seat 2 independently slides along the annular test frame 102 to adjust the angle position so as to align the interfaces of the tested valve with each other, therefore, the sealing test is convenient to be carried out on all interfaces of the multi-interface valve at the same time, and the use is more flexible and convenient.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, preferably, the middle of the annular test frame 102 of the system is provided with an annular guide rail 104 in a surrounding manner, the unit test seats 2 are slidably connected with the annular test frame 102 through the annular guide rail 104, a plurality of unit test seats 2 are arranged on the annular guide rail 104 in a surrounding manner, each unit test seat 2 can independently seal an interface of a valve and carry out a pressurization test on the valve, the unit test seats 2 are slidably connected with the annular guide rail 104, as the interfaces of the valves with multiple interfaces are always arranged by the same center point of the valve, namely, the valve core is arranged in an outward projection manner, the middle of the annular guide rail 104 is provided with an adjusting toothed ring 105 in a surrounding manner, the inner side of the unit test seats 2 is provided with an adjusting motor 203, the shaft end of the adjusting motor 203 is provided with an adjusting gear 204, the adjusting gear 204 is in a meshed connection with the adjusting toothed ring 105, the adjusting motor 203 drives the unit test seats 2 to move around the center of the annular guide rail 102 along the annular guide rail 204, so that the adjusting toothed ring 204 is convenient for the unit test seats 2 to seal the center of the valve, the valve with the valve to carry out a pressurization test, and the interfaces are more convenient for the test, and all interfaces can be more convenient for use when the interfaces are aligned with the interfaces to test with the valve to each other.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, preferably, the system is provided with a guide sliding sleeve 301 through a sealing structure with an inflatable elastic airbag 5 as a valve connector, so as to adapt to the valve connectors with different sizes and shapes, the system is inflated when being connected and deflated when being disassembled and opened, meanwhile, a central sliding sleeve 505 is arranged on the outer side of the detection communicating pipe 4 in a nested sliding manner, a sealing push plate 504 is arranged on the outer side of the central sliding sleeve 505 in a surrounding manner, the sealing push plate 504 is in sliding connection with the detection communicating pipe 4 through the central sliding sleeve 505, the sealing push plate 504 is positioned on the rear side of the elastic airbag 5, a sliding guide rod 506 is arranged on the back side of the sealing push plate 504, the outer side of the test sealing seat 3 is connected with the test sealing seat 3 through the sliding guide rod 506 and the guide sliding sleeve 301, the outer side of the test sealing seat 3 is connected with a hydraulic telescopic rod 507, the front end and the rear end of the hydraulic telescopic rod 507 are respectively connected with the sealing push plate 504 and the test sealing seat 3, the sealing push plate 504 can be driven to move along the detection 4, the sealing push plate 504 is pushed by the central sliding sleeve 505, the sliding connection is connected with the detection communicating pipe 4 through the central sliding sleeve, the sliding sleeve 506 is arranged on the outer side, and the sealing sleeve is further in sliding along the sealing sleeve, and the sealing seat 5, when the sealing seat is pushed to move along the detection sealing seat 5, and the sealing seat 5.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, preferably, an air bag installation sleeve 501 is further provided between the elastic air bag 5 and the detection communicating pipe 4 of the system, the elastic air bag 5 is fixedly connected with the air bag installation sleeve 501, a nested thread 502 is circumferentially provided on the inner side surface of the air bag installation sleeve 501, a connecting thread 402 is circumferentially provided on the outer side surface of the detection communicating pipe 4, the nested thread 502 and the connecting thread 402 are directly matched with each other, the air bag installation sleeve 501 is detachably and closely connected with the detection communicating pipe 4 through the nested thread 502 and the connecting thread 402, so that the elastic air bag 5 can be conveniently and quickly replaced when the elastic air bag 5 is damaged, and meanwhile, the front and rear positions of the elastic air bag 5 and the detection communicating pipe 4 can be adjusted through rotating the air bag installation sleeve 501 so as to be matched with different valve interfaces for use, and the use is more convenient and quick.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, preferably, circular guide holders 6 are symmetrically arranged at intervals on the front and rear sides of the annular test rack 102 of the system, pneumatic telescopic rods 7 are horizontally connected and arranged at the centers of the circular guide holders 6, one ends of the pneumatic telescopic rods 7, which are close to the annular test rack 102, are connected and provided with detection clamping holders 701, the pneumatic telescopic rods 7 and the detection clamping holders 701 are further provided with pressure gauges 703, the pneumatic telescopic rods 7 and the detection clamping holders 701 are connected with each other through the pressure gauges 703, so that before detection, the corresponding detection clamping holders 701 are respectively driven to be close to each other by the pneumatic telescopic rods 701 arranged on the two sides, a valve can be clamped and fixed, the valve can be conveniently fixed and assembled and disassembled, simultaneously, the bottom of the annular test rack 102 is provided with a connecting turntable 101 through the connecting turntable 101 and the horizontal test rack 1, when the valve is fixedly assembled and disassembled, the annular test rack 102 can be connected with the connecting turntable 101, the valve is conveniently arranged at a certain angle, the side face of the pneumatic telescopic rods 7 and the detection clamping holders are further provided with a pressure gauge 703, the clamping heads are conveniently arranged at the same time, the clamping heads are in a certain angle, the clamping heads are convenient to be matched with the clamping heads are in a clamping tool, and the clamping heads are in a clamping tool clamping device, and the clamping device is convenient to be matched with the clamping device, and the clamping device is arranged at the clamping device, and the clamping device is a clamping device is convenient to be matched with the clamping device.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, preferably, the outside nested sliding of circular guide holder 6 of the system is provided with a protective seal cylinder 8, the middle of protective seal cylinder 8 is provided with a transparent window 801, a space seal ring 601 is arranged between circular guide holder 6 and protective seal cylinder 8, so as to maintain tightness between the shape guide holder and protective seal cylinder 8, the outside connection of protective seal cylinder 8 is provided with a synchronous screw sleeve 802, the middle nested connection of synchronous screw sleeve 802 is provided with a translation screw 602, the shaft end connection of translation screw 602 is provided with a translation motor 603, the translation motor 603 drives the protective seal cylinder 8 which is arranged in bilateral symmetry to move reversely through translation screw 602 and synchronous screw sleeve 802, the front and rear sides of annular test frame 102 are all provided with embedded seal grooves 103 in a surrounding manner, so that the protective seal cylinder 8 which is arranged in bilateral symmetry can move to the annular test frame 102 and are embedded to the embedded seal grooves 103, and the dimensions between the protective seal cylinder 8 and the embedded seal grooves 103 are mutually matched, so that the detected by the protective seal cylinder 8 can completely detect the inside by the valve, thereby providing a certain detection and an accurate and stable safety and sealing position.
As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7, FIG. 8, As shown in fig. 9 and 10, preferably, the outer end connection of the regulating valve 404 of the system is provided with a connecting air pipe 302, the outer end connection of the connecting air pipe 302 is provided with a pressurizing air tank 303, all regulating valves 404 are mutually communicated with the pressurizing air tank 303 through the connecting air pipe 302 of the regulating valve 404 and the flexible structure, so that the detecting communicating pipe 4 is mutually communicated with the pressurizing air tank 303, pressurized air is supplied to the pressurizing air tank 303 through the detecting pressurizing air pump 305, and further supplied to the detecting communicating pipe 4 through the regulating valve 404 and the connecting air pipe 302, so as to be supplied to the interface of the valve through the detecting communicating pipe 4, thereby pressurizing the interface of the valve, and the detecting pressurizing air pump 305 is mutually connected with the bottom of the pressurizing air tank 303, the detecting communicating pipe 4 is mutually connected with the top of the pressurizing air tank 303, the top of the pressurizing air storage tank 303 is also connected with an air adding port 306, the inner side of the pressurizing air storage tank 303 is nested and slides and provided with a spacing piston 304, the spacing piston 304 divides the inner space of the pressurizing air storage tank 303 into an upper part and a lower part, the upper part of the pressurizing air storage tank 303 positioned on the spacing piston 304 is stored with nitric oxide, so that when the pressurizing air pump 305 is detected to pressurize the inside of the pressurizing air storage tank 303, the spacing piston 304 is pushed, the nitric oxide stored on the upper side is conveyed to the corresponding detecting communicating pipe 4 through the spacing piston 304 for pressurizing test, when the detected valve leaks, the pressurized nitric oxide is leaked to the outer side of the detected valve, contacts with the air on the outer side and reacts with oxygen in the air to generate reddish brown nitrogen dioxide, thereby being convenient for quickly judging whether the detected valve leaks and the corresponding leakage point, meanwhile, the sealed test space formed by the protective sealing cylinder 8 can prevent nitric oxide and nitrogen dioxide from leaking to completion, a plurality of laser transmitters 604 and laser receivers 605 are uniformly arranged in the middle of a vertical plane on one side of the circular guide seat 6, which is close to the annular test frame 102, the laser transmitters 604 and the laser receivers 605 are arranged in a one-to-one correspondence manner, when the valve leaks to generate reddish brown nitrogen dioxide, the laser transmitters 604 can cause the corresponding laser transmitters 604 to emit laser to be blocked and scattered relative to the completely transparent air, the intensity of the laser received by the corresponding laser receivers 605 can be reduced, the laser numerical variation of the laser receivers 605 at the corresponding positions can be detected to judge whether the tested valve leaks and the corresponding leakage point position more accurately and conveniently, meanwhile, an exhaust treatment pipe 901 is arranged in the middle of the circular guide seat 6, an opening at one end of the exhaust treatment pipe 901 is positioned on a vertical plane of one side of the circular guide seat 6, which is close to the annular test frame 102, a treatment water tank 9 is arranged at the other end of the exhaust treatment pipe 901 in a connecting way, an exhaust fan 902 is arranged in the middle of the exhaust treatment pipe 901, a tail gas exhaust pipe 903 is arranged at the top of the treatment water tank 9 in a connecting way, so that after detection is finished, the exhaust fan 902 can convey gas in the protective sealing cylinder 8 to the treatment water tank 9 through the exhaust treatment pipe 901 and suck outside air into the air exchange valve 803 arranged in the middle of the protective sealing cylinder 8 for exchange, as nitrogen dioxide is easy to dissolve in water, and after the gas is conveyed into the treatment water tank 9 to contact with water, the nitrogen dioxide in the treatment water is separated and removed, the residual air is discharged from the exhaust pipe 903, so that the whole operation is safer during detection.
When in use, corresponding pipelines of the system are connected, then valves to be detected are arranged at the center of the annular test frame 102, then the pneumatic telescopic rods 7 at two sides respectively drive the corresponding detection clamping seats 701 to be mutually close to clamp and fix the detected valves, then the translation motor 603 drives the protective sealing barrels 8 symmetrically arranged at two sides to synchronously and reversely move through the translation screw 602 and the synchronous screw sleeve 802, the protective sealing barrels 8 symmetrically arranged at two sides are moved to the annular test frame 102 and are embedded into the embedded sealing groove 103, the detected valves are completely sealed inside through the protective sealing barrels 8, then the adjusting motor 203 drives the unit test seat 2 to circularly move around the center of the annular test frame 102 along the annular guide rail 104 through the adjusting gear 204 and the adjusting toothed ring 105, the angle adjusting position of the unit test seat 2 is mutually aligned with the interface of the detected valves, then the hydraulic push rod 202 is translated to drive the test sealing seat 3 to move towards the valve interface, so that the gas pipe 302 and the elastic air bag 5 are connected to the valve interface, then the sealing pressurizing air pump 503 is inflated into the elastic air bag 5, so that the elastic air bag 5 is integrally inflated to seal the corresponding valve interface, meanwhile, the hydraulic telescopic rod 507 drives the sealing push plate 504 to move along the detection communicating pipe 4, so that the sealing push plate 504 moves towards one side of the elastic air bag 5 along the detection communicating pipe 4, synchronously pushes and extrudes the elastic air bag 5, further improves the tightness when the valve interface is sealed by the elastic air bag 5, then when the pressurizing air pump 305 is detected to pressurize the inside of the pressurizing air storage tank 303, the spacing piston 304 is pushed, nitric oxide stored on the upper side is conveyed to the corresponding detection communicating pipe 4 through the spacing piston 304 to conduct pressurizing test, the nitric oxide conveyed under pressure leaks to the outer side of the valve to be tested, contacts with the air on the outer side, reacts with oxygen in the valve to generate reddish brown nitrogen dioxide, so that whether the valve to be tested leaks and a corresponding leakage point are quickly judged, meanwhile, when the valve leaks to generate reddish brown nitrogen dioxide, compared with the completely transparent air, laser emitted by the corresponding laser emitter 604 is blocked and scattered, the intensity of the laser received by the corresponding laser receiver 605 is reduced, the laser numerical value change of the laser receiver 605 at the corresponding position is detected, whether the valve to be tested leaks and a corresponding leakage point can be accurately judged, the on-off of the corresponding detection communicating pipe 4 is controlled through the regulating valve 404, all interfaces of the valve can be simultaneously or simultaneously detected, after detection is completed, the pressurizing air pump 305 is detected to pump air, the interval piston 304 is driven to move downwards, the nitric oxide is pumped back into the pressurizing air storage tank 303, meanwhile, the gas in the protective sealing cylinder 8 can be conveyed to the processing water tank 901 through the exhaust processing pipe, the air outside air is pumped through the air exchange valve 803 installed in the middle of the protective sealing cylinder 8, the gas is conveyed to the processing water tank 903, the air exchange pipe 903 is separated from the air exchange water is separated, and the residual air is discharged after the air exchange pipe is separated, and the air is discharged from the valve is detected, and the air exchange pipe is conveniently discharged.
According to the air tightness detection system for the valve, the test sealing seat 3 is driven to move by translating the hydraulic push rod 202, so that the test sealing seat 3 is connected with the interfaces of the valve, the detection communicating pipe 4 in the middle of the test sealing seat 3 is positioned at the interfaces of the valve, the elastic air bag 5 is arranged on the outer side of the detection communicating pipe 4 in a surrounding manner, the elastic air bag 5 can be inflated to seal the corresponding valve interfaces, meanwhile, the inflated elastic air bag 5 serves as a sealing structure of the valve interfaces, the valve interfaces with different sizes and shapes are conveniently adapted, the sealing connection and the assembly and disassembly are more convenient and quick, the detection communicating pipe 4 is communicated with the pressurized air storage tank 303 through the adjusting valve 404 and the connecting air pipe 302, pressurized air is conveyed to the pressurized air storage tank 303 through the detection pressurizing air pump 305, the valve 404 and the connecting air pipe 302 are further conveyed to the interfaces of the valve through the detection communicating pipe 4, so that the interfaces of the valve are pressurized, the air tightness of the valve can be detected through the numerical value corresponding to the air pressure gauge 401, and as a plurality of unit test seats 2 are arranged on the annular guide rail 104 in a surrounding manner, each unit test seat 2 can be independently tested, and the valve interfaces can be conveniently and independently sealed along the annular interfaces when the valve interfaces are tested, and the valve interfaces are conveniently adjusted, and the valve interfaces are conveniently and the test interfaces are conveniently sealed.
It will be appreciated by persons skilled in the art that the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples, that combinations of technical features in the above embodiments or in different embodiments may also be implemented in any order, and that many other variations of the different aspects of the invention as described above are present within the spirit of the invention, which are not provided in detail for the sake of brevity. Any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the protection scope of the present invention.
Claims (10)
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| CN202510261269.3A CN119756729A (en) | 2025-03-06 | 2025-03-06 | Air tightness detection system of valve |
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| CN120740687A (en) * | 2025-08-29 | 2025-10-03 | 国网甘肃省电力公司金昌供电公司 | GIS equipment fault on-line monitoring device |
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Application publication date: 20250404 |