A valve inner leakage and outer leakage automatic detection equipment

Abstract

The application provides a valve inner leakage and outer leakage automatic detection equipment, which comprises a box body, a supporting seat arranged on the box body, a fixing mechanism arranged on the supporting seat and used for pressing and fixing a valve to detect inner leakage and outer leakage of the valve, a water pressurizing mechanism arranged in the box body and used for water detection to detect whether the valve leaks, a drying mechanism arranged in the fixing mechanism and the water pressurizing mechanism and used for drying the valve after testing to keep the inside of the valve dry, and a visual detection mechanism. The fixing mechanism is arranged to ensure valve sealing, the water pressurizing mechanism is arranged to realize automatic detection of inner leakage and outer leakage, water can be recycled, resources are saved, the drying mechanism can simulate high-temperature detection and dry the valve, the visual detection mechanism records the inner leakage position, and the detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve detection, in particular to a valve inner leakage and outer leakage automatic detection equipment. BACKGROUND

[0002] Valves are crucial in industrial production, and common problems are inner leakage and outer leakage. Inner leakage refers to abnormal flow of medium in the valve when the valve is closed, which reduces system efficiency, causes energy waste, and may also cause process deviation. Outer leakage refers to leakage of medium from the valve body to the external environment, which not only pollutes the environment, but also may cause serious safety hazards due to leakage of flammable, explosive, and toxic medium. Therefore, detecting valve inner leakage and outer leakage is of great significance to ensure production safety and efficient operation.

[0003] Chinese patent CN109900437A discloses a valve inner leakage detection device, wherein the detection device comprises: an acoustic signal detection module for detecting acoustic signals on a pipeline on which the valve (204) is installed; an adjusting member for adjusting the installation pressure of the acoustic signal detection module; a pressure detection module for detecting the installation pressure signal of the acoustic signal detection module; a collection module for collecting the acoustic signals detected by the acoustic signal detection module and the installation pressure signals detected by the pressure detection module; and a signal sending module for sending the acoustic signals and the installation pressure signals collected by the collection module. The technical scheme provided by the present application solves the problem of continuous online collection of valve inner leakage signals in petrochemical sites, and can improve the signal collection stability and effectiveness of the valve inner leakage detection device.

[0004] However, in actual use, it is found that the valve plate of the valve is fixed for testing without switching action, resulting in that outer leakage caused by incomplete closure of some valves is judged as unqualified products, causing false positives. In the testing process, only clean water is used for testing, and for some specific working conditions, the real situation cannot be reflected, such as high temperature working condition. Under high temperature working condition, the valve expands, and the matching gap of the valve plate changes. It is not clear whether the leakage requirement is met under high temperature working condition. When detecting the inner leakage of the valve at both ends, the other end needs to be disassembled and fixed again, which makes the valve production process testing inefficient, the whole detection workload is large, and automatic testing cannot be realized. SUMMARY

[0005] The present application aims at the deficiencies of the prior art, and provides a valve inner leakage and outer leakage automatic detection equipment, which realizes automatic detection of valve inner leakage and outer leakage by the cooperation of the fixing mechanism and the water pressurizing mechanism, and solves the problem of low efficiency of manual operation.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] An automatic valve inner and outer leakage detection device, comprising a box body and a support seat arranged on the box body, further comprising:

[0008] A fixing mechanism arranged on the support seat and used for pressing and fixing the valve for inner and outer leakage detection;

[0009] A water pressurizing mechanism arranged inside the box body and used for water detection of the valve;

[0010] A drying mechanism arranged inside the fixing mechanism and the water pressurizing mechanism and used for drying the tested valve to keep its inside dry;

[0011] A visual detection mechanism arranged inside the fixing mechanism and the water pressurizing mechanism respectively and used for detecting and recording the water leakage position of the valve;

[0012] The fixing mechanism comprises:

[0013] A pressure sealing assembly arranged on the support seat and used for sealing the valve by pressing it;

[0014] An alignment assembly arranged on the support seat and used for clamping the valve to ensure its stability during testing.

[0015] Preferably, the pressure sealing assembly comprises:

[0016] A hydraulic rod installed on the top of the support seat;

[0017] A pressing cavity arranged on the top rod of the hydraulic rod;

[0018] A first sealing gasket arranged on the bottom of the pressing cavity;

[0019] An upper water inlet arranged on the pressing cavity.

[0020] Preferably, the alignment assembly comprises:

[0021] A sliding rod arranged on the support seat;

[0022] A sliding plate slidingly arranged on the sliding rod;

[0023] A rubber block arranged on the sliding plate and having an arc corner matched with the valve;

[0024] A first motor installed on the support seat;

[0025] A screw rod is in transmission connection with the output shaft of the first motor and is in screw connection with the sliding plate.

[0026] Preferably, the water pressurizing mechanism comprises:

[0027] A bottom end pressurizing assembly is arranged inside the box and is used to supply water from the bottom of the valve to detect internal leakage;

[0028] A top end pressurizing assembly is arranged on the bottom end pressurizing assembly and is used to supply water from the top of the valve to detect internal leakage at the top of the valve.

[0029] Preferably, the bottom end pressurizing assembly comprises:

[0030] A water pump is arranged inside the box;

[0031] A water inlet pipe is connected with the water inlet of the water pump;

[0032] A water storage tank is arranged inside the box and the water inlet pipe extends to the bottom of the water storage tank;

[0033] A water outlet pipe is connected with the water outlet of the water pump;

[0034] A connecting pipe is in communication with the water outlet pipe;

[0035] A first electromagnetic valve is arranged on the connecting pipe to control the water supplied from the bottom of the valve;

[0036] A support cavity is arranged on the box;

[0037] A lower water inlet is arranged on the support cavity and is in communication with the connecting pipe;

[0038] A drain pipe is in communication with the inside of the support cavity to drain the tested water;

[0039] A second electromagnetic valve is arranged on the drain pipe to control whether to drain water;

[0040] A second sealing gasket is arranged on the top of the support cavity.

[0041] Preferably, the top end pressurizing assembly comprises:

[0042] A third electromagnetic valve is arranged on the connecting pipe and is in communication with one end of the water outlet pipe;

[0043] A telescopic pipe is in communication with the water outlet of the third electromagnetic valve.

[0044] Preferably, the drying mechanism comprises:

[0045] a heating assembly arranged in the compression cavity and the supporting cavity respectively for heating water to provide high-temperature working condition;

[0046] a blowing assembly arranged in the supporting cavity for driving hot air to flow to dry the tested valve.

[0047] Preferably, the heating assembly comprises:

[0048] a heating rod arranged in the compression cavity in a ring shape;

[0049] a thermometer arranged in the compression cavity and the supporting cavity respectively;

[0050] a heating wire net arranged in the supporting cavity for heating water to provide high-temperature working condition or heating air to dry the valve.

[0051] Preferably, the blowing assembly comprises:

[0052] a second motor arranged in the box;

[0053] a fan blade in transmission connection with an output shaft of the second motor.

[0054] Preferably, the visual detection mechanism comprises:

[0055] a transparent cover arranged in the compression cavity and the supporting cavity respectively;

[0056] a camera arranged in the transparent cover for recording water leakage position;

[0057] a flash arranged in the transparent cover.

[0058] The present application has the advantages of:

[0059] (1) The present application fixes the valve in horizontal and vertical directions through the fixing mechanism, guarantees the sealing property of the valve connection, avoids water leakage from the connection, and influences the detection.

[0060] (2) The present application fills water from the bottom and top of the valve respectively to test through the water pressurizing mechanism, can detect the internal leakage of the top and bottom of the valve without dismounting and re-installing, can detect the external leakage when the valve plate of the valve is opened, and realizes the automatic operation of internal leakage and external leakage.

[0061] (3) After the test is completed, the valve plate of the valve is opened and the water after the test will flow to the bottom and return to the water storage tank through the drain pipe, realizing the recycling of the test water and saving water resources.

[0062] (4) By setting up a drying mechanism, the present invention can heat the test water to test the internal and external leakage of the valve under high temperature conditions, and use a thermometer to detect the internal and external leakage of the valve at various temperatures. On the other hand, by heating the air, the valve after the test is completed is dried by hot air, so as to avoid too much water sticking inside the valve, which would affect its storage and product quality.

[0063] (5) The present invention can record the internal leakage of the valve by setting a visual inspection mechanism and record the location of the internal leakage. During the test, the valve plate of the valve can be rotated and adjusted to perform multiple tests, thereby avoiding the internal leakage caused by the valve plate not being turned in place and improving the accuracy of the test.

[0064] In summary, this invention offers advantages such as comprehensive and accurate detection, high degree of automation, resource conservation and efficiency, adaptability to various working conditions, and guaranteed product quality. Attached Figure Description

[0065] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0066] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0067] Figure 3 This is a schematic diagram of the sliding plate structure of the present invention;

[0068] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0069] Figure 5 This is a schematic cross-sectional view of the pressure cavity structure of the present invention;

[0070] Figure 6 This is a schematic cross-sectional view of the transparent cover structure of the present invention;

[0071] Figure 7 This is a schematic cross-sectional view of the support cavity structure of the present invention;

[0072] Figure 8 This is a schematic diagram of the alignment component structure of the present invention;

[0073] Figure 9 This is a schematic diagram of the water pressurization mechanism of the present invention.

[0074] In the picture:

[0075] 100. Housing; 200. Support base; 300. Valve;

[0076] 1, fixed mechanism; 11, pressure sealing assembly; 111, hydraulic rod; 112, pressure cavity; 113, first sealing pad; 114, upper water inlet; 12, alignment assembly; 121, sliding rod; 122, sliding plate; 123, rubber block; 124, first motor; 125, screw rod;

[0077] 2, water pressurizing mechanism; 21, bottom end pressurizing assembly; 211, water pump; 212, water inlet pipe; 213, water storage tank; 214, water outlet pipe; 215, connecting pipe; 216, first electromagnetic valve; 217, support cavity; 218, lower water inlet; 219, drain pipe; 2110, second electromagnetic valve; 2111, second sealing pad; 22, top end pressurizing assembly; 221, third electromagnetic valve; 222, telescopic pipe;

[0078] 3, drying mechanism; 31, heating assembly; 311, heating rod; 312, thermometer; 313, heating wire mesh; 32, blowing assembly; 321, second motor; 322, fan blade;

[0079] 4, visual detection mechanism; 401, transparent cover; 402, camera; 403, flash. DETAILED DESCRIPTION

[0080] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0081] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0082] Embodiment one

[0083] As Figures 1 to 3 shown, the embodiment provides a valve inner leakage and outer leakage automatic detection equipment, which comprises a box body 100 and a support seat 200 arranged on the box body 100, and further comprises:

[0084] A fixing mechanism 1 is arranged on the support seat 200 and used for pressing and fixing a valve 300 to detect the inner leakage and outer leakage of the valve 300.

[0085] A water pressurizing mechanism 2 is arranged inside the box body 100 and used for water detection to detect whether the valve 300 leaks water.

[0086] A drying mechanism 3 is arranged inside the fixing mechanism 1 and the water pressurizing mechanism 2 and used for drying the valve 300 after testing to keep the inside of the valve 300 dry.

[0087] A visual detection mechanism 4 is arranged inside the fixing mechanism 1 and the water pressurizing mechanism 2 respectively and used for detecting and recording the water leakage position of the valve 300.

[0088] The fixing mechanism 1 comprises:

[0089] A pressure sealing assembly 11 is arranged on the support seat 200 and used for sealing the valve 300 by pressing the valve 300.

[0090] An alignment assembly 12 is arranged on the support seat 200 and used for clamping the valve 300 to ensure that the valve 300 is stable during testing.

[0091] In the embodiment, the fixing mechanism 1 is arranged to fix the valve 300 in the vertical and horizontal directions, to ensure the sealing of the valve 300 connection, and the water pressurizing mechanism 2 is arranged to detect the inner leakage of the valve 300 from the bottom or the top of the valve 300 respectively, and to detect the outer leakage of the valve 300 at the same time, the drying mechanism 3 can provide high temperature working conditions for valve 300 detection, to detect the working conditions of the valve 300 at different temperatures, and can also dry the valve 300 after detection to remove the residual moisture inside the valve 300, and the visual detection mechanism 4 is arranged to record the inner leakage during detection, to realize efficient and accurate detection of the inner leakage and outer leakage of the valve 300.

[0092] In detail, in the fixed mechanism 1, the pressure sealing assembly 11 and the alignment assembly 12 are in close cooperation, the pressure sealing assembly 11 is responsible for sealing the valve 300, ensuring that water does not leak from the connection during detection, ensuring the accuracy of the detection results, and the alignment assembly 12 is used for accurate positioning and stable clamping of the valve 300, avoiding the influence of valve shaking on detection during testing, and the two cooperate with each other, so that the valve can be stably fixed in the horizontal and vertical directions, providing a reliable foundation for subsequent detection.

[0093] It should be noted that the internal leakage is detected and recorded by the visual detection mechanism 4, and the upper and lower ends of the valve 300 are simultaneously watered for external leakage detection. When the valve 300 has a hole, water will spray out, which can be recorded manually.

[0094] Further, as shown in Figures 1 to 2 The pressure sealing assembly 11 comprises:

[0095] The hydraulic rod 111 is installed on the top of the support base 200;

[0096] The compression cavity 112 is arranged on the top rod of the hydraulic rod 111;

[0097] The first sealing gasket 113 is arranged at the bottom of the compression cavity 112;

[0098] The upper water inlet 114 is arranged on the compression cavity 112.

[0099] In this embodiment, by arranging the pressure sealing assembly 11, the top and bottom of the valve 300 are simultaneously sealed, which cooperates with other assemblies to ensure that water can stably act on the valve 300 during valve internal and external leakage detection, while preventing water from leaking from the top or bottom connection, thereby ensuring the accuracy and reliability of the detection results, and providing a key guarantee for the smooth progress of the entire detection process.

[0100] In detail, the hydraulic rod 111 is installed on the top of the support base 200 as a power output component, after receiving the instructions from the control system, the hydraulic rod 111 drives the top rod to rise or fall, the top rod drives the compression cavity 112 to move, the first sealing gasket 113 at the bottom of the compression cavity 112 is in close contact with the top of the valve 300 when the compression cavity 112 is lowered, and the gap is filled by using its elasticity, preventing water from leaking from the top, and the upper water inlet 114 is a water passage, when the water pressure mechanism 2 is working, water enters the compression cavity 112 through the upper water inlet 114, and the top of the valve 300 is detected for internal leakage.

[0101] It should be noted that the inside of the compression cavity 112 is hollow for installing other mechanisms.

[0102] Further, as shown inFigure 3 and Figure 8 As shown, the alignment component 12 includes:

[0103] A slide rod 121 is disposed on the support base 200;

[0104] A sliding plate 122 is slidably disposed on the sliding rod 121;

[0105] A rubber block 123 is disposed on the sliding plate 122 and its arc angle is in contact with the valve 300;

[0106] The first motor 124 is mounted on the support base 200;

[0107] The lead screw 125 is connected to the output shaft of the first motor 124 and is threadedly connected to the sliding plate 122.

[0108] In this embodiment, the alignment component 12 is used to achieve precise positioning and stable clamping of the valve 300 in the horizontal direction, so that the center of the valve 300 is aligned with the center of the pressure chamber 112, thereby ensuring the sealing effect and ensuring that the valve 300 remains stable during the test without displacement or shaking, thus ensuring the accuracy and reliability of the test results. It works in conjunction with other components such as the pressure sealing component 11 to provide a stable foundation for the detection of internal and external leakage of the valve, so that the entire test process can proceed smoothly.

[0109] In detail, the slide rod 121 is fixedly mounted on the support base 200, providing a sliding track and support for the sliding plate 122. When the first motor 124 starts, its output shaft drives the lead screw 125 to rotate. Since the lead screw 125 is threadedly connected to the sliding plate 122, the rotation of the lead screw 125 is converted into the sliding plate 122 sliding linearly along the slide rod 121. The rubber blocks 123 mounted on the sliding plate 122 have an arc angle that fits the shape of the valve 300. As the sliding plate 122 slides, the two rubber blocks 123 gradually approach the valve 300 from both sides and eventually clamp the valve 300 tightly. The rubber block 123 has a certain degree of elasticity. When clamping the valve 300, it can provide sufficient friction to prevent the valve from sliding and avoid damage to the valve surface. During the entire testing process, the first motor 124 continuously provides power to ensure that the lead screw 125 rotates stably, so that the sliding plate 122 and the rubber block 123 always maintain a stable clamping of the valve 300, ensuring that the valve 300 is fixed in the horizontal direction.

[0110] Furthermore, such as Figures 3 to 4 and Figure 9 As shown, the water pressurization mechanism 2 includes:

[0111] A bottom end pressurizing assembly 21 is arranged inside the box 100 and is used to supply water from the bottom of the valve 300 to detect internal leakage;

[0112] A top end pressurizing assembly 22 is arranged on the bottom end pressurizing assembly 21 and is used to supply water from the top of the valve 300 to detect internal leakage at the top of the valve 300.

[0113] In the present embodiment, by arranging the water pressurizing mechanism 2, not only the comprehensive detection of internal leakage of the valve 300 is realized, but also the effective judgment of external leakage is realized, and the detection of water is recycled, which significantly improves the detection efficiency and reduces the resource consumption. The bottom end pressurizing assembly 21 and the top end pressurizing assembly 22 work together to supply water from the bottom and the top of the valve 300 respectively to detect internal leakage in all directions. The external leakage is detected when water is supplied, and the position of the leakage is recorded manually by observing whether water seeps out of the valve. After the valve plate of the valve 300 is opened, the detected water flows to the bottom and is returned to the water storage tank 213 through the drain pipe 219 to realize water resource recycling, which provides an efficient and environmentally friendly solution for valve detection.

[0114] Further, as shown in Figure 7 and Figure 9 The bottom end pressurizing assembly 21 comprises:

[0115] A water pump 211 is arranged inside the box 100;

[0116] A water inlet pipe 212 is connected with the water inlet of the water pump 211;

[0117] A water storage tank 213 is arranged inside the box 100, and the water inlet pipe 212 extends to the bottom of the water storage tank 213;

[0118] A water outlet pipe 214 is connected with the water outlet of the water pump 211;

[0119] A connecting pipe 215 is in communication with the water outlet pipe 214;

[0120] A first electromagnetic valve 216 is arranged on the connecting pipe 215 to control the water supplied from the bottom of the valve 300;

[0121] A support cavity 217 is arranged on the box 100;

[0122] A lower water inlet 218 is arranged on the support cavity 217 and is in communication with the connecting pipe 215;

[0123] a drain pipe 219, which is in communication with the inside of the support cavity 217, for discharging water after testing;

[0124] a second electromagnetic valve 2110, which is arranged on the drain pipe 219, for controlling whether to discharge water;

[0125] a second sealing gasket 2111, which is arranged on the top of the support cavity 217.

[0126] In the present embodiment, by arranging the bottom end pressurizing assembly 21, the water supply from the bottom of the valve 300 for internal leakage detection is realized, and the discharge and recycling of water after detection are realized. The assembly cooperates with other mechanisms to ensure the efficient and accurate performance of the valve detection process, and saves water resources. The water pump 211 provides power to deliver water in the water storage tank 213 to the bottom of the valve 300. The first electromagnetic valve 216 controls the water flow, the second electromagnetic valve 2110 controls the water discharge, and the second sealing gasket 2111 ensures sealing, thereby providing stable and reliable conditions for internal leakage detection at the bottom of the valve.

[0127] In detail, when the internal leakage detection at the bottom of the valve 300 is performed, the water pump 211 is started to draw water from the bottom of the water storage tank 213 through the water inlet pipe 212. The water inlet pipe 212 extends to the bottom of the water storage tank 213 to ensure that the water in the tank is fully utilized. The water pump 211 pressurizes the water and delivers it to the connecting pipe 215 through the water outlet pipe 214. The first electromagnetic valve 216 is opened, and the water enters the support cavity 217 through the connecting pipe 215 and the lower water inlet 218, and then reaches the bottom of the valve 300. The second sealing gasket 2111 at the top of the support cavity 217 tightly fits the bottom of the valve 300 to prevent water leakage and ensure the accuracy of the detection. If the valve 300 has internal leakage, water will flow out from the leakage and be recorded by the camera 402. After the detection is completed, the first electromagnetic valve 216 is closed, and the second electromagnetic valve 2110 is opened. The water in the support cavity 217 flows back to the water storage tank 213 through the drain pipe 219, realizing the recycling of water.

[0128] Further, as shown in Figure 5 and Figure 9 the top end pressurizing assembly 22 comprises:

[0129] a third electromagnetic valve 221, the water inlet of which is in communication with one end of the water outlet pipe 214;

[0130] a telescopic pipe 222, which is in communication with the water outlet of the third electromagnetic valve 221.

[0131] In the embodiment, by setting the top end pressurizing assembly 22, water supply from the top of the valve 300 is realized to detect the internal leakage of the top thereof, the assembly cooperates with the bottom end pressurizing assembly 21, and the valve 300 can be detected in all directions without disassembling the valve, so that the detection efficiency and accuracy are improved, and a reliable basis for judging the sealing of the valve is provided.

[0132] In detail, when the internal leakage of the top of the valve 300 is detected, the water pump 211 in the bottom end pressurizing assembly 21 is started to pump and pressurize the water in the water storage tank 213, and the water is transported through the water outlet pipe 214. At this time, the third electromagnetic valve 221 is opened, and the water in the water outlet pipe 214 flows into the flexible pipe 222 which is in communication with the water inlet thereof. The flexible pipe 222 can be flexibly adjusted according to the actual height of the valve 300 to ensure that the water outlet thereof can accurately butt joint with the top of the valve 300. The water reaches the top of the valve 300 through the flexible pipe 222 and enters the inside of the valve under the action of pressure. If there is internal leakage at the top of the valve, the water will flow out from the leakage and be recorded by the camera 402 inside the bottom support cavity 217, so that the detection of the internal leakage of the top of the valve is realized.

[0133] It should be noted that multiple detections can be performed by opening and closing the valve 300 multiple times to avoid false detection caused by the valve 300 not being closed tightly.

[0134] Further, as shown in Figure 5 and Figure 7 , the drying mechanism 3 comprises:

[0135] a heating assembly 31, which is arranged in the compression cavity 112 and the support cavity 217 respectively and is used for heating water to provide high-temperature working conditions;

[0136] a blowing assembly 32, which is arranged in the support cavity 217 and is used for driving hot air to flow to dry the valve 300 after testing.

[0137] In the embodiment, by setting the drying mechanism 3, the functions of providing high-temperature working conditions for the valve 300 detection and drying the valve after testing are realized. The heating assembly 31 can simulate the use of the valve in a high-temperature environment, detect the performance of the valve under different temperature conditions, and make the detection result more consistent with the actual use scene. The blowing assembly 32 can quickly remove the residual moisture in the valve after the detection is completed, prevent the moisture from causing corrosion and other damage to the valve, shorten the detection period, and improve the detection efficiency.

[0138] In detail, when valve testing is required to simulate high-temperature conditions, the heating component 31 starts to work. The heating rod 311 in the pressure chamber 112 or the heating wire mesh 313 in the support chamber 217 is energized and heats up to heat the water in the pressure chamber 112 or the support chamber 217. The thermometer 312 monitors the water temperature in real time. When the water temperature reaches the set high-temperature value, the control system will adjust the heating power according to the feedback to maintain a stable high-temperature environment, allowing the valve 300 to be tested under high-temperature conditions close to actual use.

[0139] After all tests are completed, the drying stage begins. At this time, the heating rod 311 is turned off, and only the heating wire mesh 313 continues to work to heat the air in the support cavity 217. At the same time, the second motor 321 of the blower assembly 32 starts, driving the fan blade 322 to rotate. The rotation of the fan blade 322 causes the hot air to flow rapidly in the support cavity 217. The hot air flows over the surface of the valve 300, accelerating the evaporation of moisture, thereby achieving the drying treatment of the valve.

[0140] Example 2

[0141] like Figure 5 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0142] The heating component 31 includes:

[0143] Heating rod 311 is disposed inside the pressure cavity 112 and arranged in a ring;

[0144] Thermometer 312 is respectively disposed in the pressure cavity 112 and the support cavity 217;

[0145] Heating wire mesh 313 is disposed in the support cavity 217 to heat water to provide high temperature conditions or to heat air to dry the valve 300.

[0146] In this embodiment, by setting up the heating component 31, the functions of providing high-temperature working conditions for valve 300 testing and drying valve 300 after testing are realized. The heating component 31 works in conjunction with other mechanisms to simulate the use of valve under different temperature environments, making the test results closer to reality. At the same time, it ensures that the valve can be dried in time after testing to avoid moisture residue from damaging the valve, thereby improving the comprehensiveness and reliability of valve testing.

[0147] In detail, after all the detection is completed, the drying stage is entered, at this time, the heating rod 311 is closed, the wire mesh 313 continues to work, but the role is changed to heat the air in the support cavity 217, the heated air forms a hot air flow in the support cavity 217, the valve 300 is opened, and the hot air flow contacts the surface of the valve 300 with the flow of air, accelerates the evaporation of the residual moisture on the surface and inside of the valve, and realizes the drying treatment of the valve.

[0148] Further, as shown in Figure 7 and Figure 9 , the blowing assembly 32 comprises:

[0149] The second motor 321 is arranged inside the box body 100.

[0150] The fan blade 322 is in driving connection with the output shaft of the second motor 321.

[0151] In the embodiment, by arranging the blowing assembly 32, the drying treatment of the valve after the detection is completed is realized, and the function of accelerating the circulation of the hot air in the high-temperature working condition detection is realized. It cooperates with the heating assembly 31, effectively improves the drying efficiency, reduces the interference of the residual moisture in the valve on the detection result, and at the same time makes the high-temperature environment more uniform and stable, thereby providing a good condition for the valve detection.

[0152] In detail, when the valve completes the internal leakage and external leakage detection, the drying stage is entered, at this time, the second motor 321 is started, the output shaft drives the fan blade 322 in driving connection therewith to rotate at high speed, the rotation of the fan blade 322 makes the air in the support cavity 217 flow quickly, and under the condition that the wire mesh 313 has heated the air in the support cavity 217, the flowing hot air will constantly blow the surface and the inside of the valve 300, accelerate the evaporation of the moisture, and thereby realize the drying of the valve.

[0153] Embodiment three

[0154] As shown in Figures 5 to 7 , wherein the same or corresponding parts as in embodiment one are denoted by corresponding reference numerals in embodiment one, for the sake of simplicity, only the difference from embodiment one will be described below. The difference between the third embodiment and the first embodiment is that:

[0155] The visual detection mechanism 4 comprises:

[0156] The transparent cover 401 is arranged inside the compression cavity 112 and the support cavity 217, respectively.

[0157] The camera 402 is arranged inside the transparent cover 401 for recording the water leakage position.

[0158] A flash 403, multiple groups of the flash 403 are arranged inside the transparent cover 401.

[0159] In the embodiment, by arranging the visual detection mechanism 4, the accurate record of the water leakage position of the valve 300 is realized, the mechanism cooperates with the water pressurization mechanism 2, the fixing mechanism 1 and the like, plays a key role in information collection in the whole valve detection process, and helps to improve the detection efficiency and accuracy and improve the control ability of the valve quality.

[0160] In detail, when the water pressurization mechanism 2 detects the internal and external leakage of the valve 300, the visual detection mechanism 4 is started synchronously, the transparent cover 401 is arranged inside the pressure cavity 112 and the support cavity 217 respectively, and provides a relatively independent and well-protected working space for the camera 402 and the flash 403, which can prevent the detection water from splashing on the camera 402 and the flash 403 to affect their normal work, and also does not affect the observation of the camera 402 to the surface of the valve 300, the camera 402 is installed inside the transparent cover 401 and always aims at the detection part of the valve 300, multiple groups of the flash 403 are turned on during the detection process, and provide sufficient and uniform illumination for the shooting of the camera 402, in the process of water pressurization to form a pressure difference inside and outside the valve 300, if the valve has a water leakage point, the water flow will flow out from the leakage, at this time, the camera 402 clearly captures the position and flow pattern of the water leakage under the illumination of the flash 403, and records the image information in real time, and the recorded image information can be analyzed by the detection personnel later, and the water leakage of the valve is accurately judged.

[0161] It should be noted that the visual detection assembly 4 is only used when detecting the internal leakage of the valve 300, when detecting the internal leakage above the valve 300, the visual detection mechanism 4 inside the lower support cavity 217 is used, and when detecting the internal leakage below the valve 300, the visual detection mechanism 4 inside the upper pressure cavity 217 is used.

[0162] Working process

[0163] First, the valve 300 is placed on the support cavity 217 of the support seat 200, the alignment assembly 12 is started, the first motor 124 drives the screw rod 125 to rotate, the sliding plate 122 slides along the slide rod 121, the rubber block 123 clamps the valve, horizontal fixation is realized, then the hydraulic rod 111 of the pressure sealing assembly 11 pushes the pressure cavity 112 to descend, the first sealing gasket 113 is attached to the top of the valve, the second sealing gasket 2111 is attached to the bottom, vertical sealing is completed, then the water pressurizing mechanism 2 is opened, the bottom pressurizing assembly 21 supplies water from the bottom of the valve, or supplies water from the top pressurizing assembly 22, internal leakage is detected, upper and lower water supply can detect external leakage, the visual detection mechanism 4 records the water leakage position of internal leakage throughout, if high temperature working condition needs to be simulated, the heating assembly 31 of the drying mechanism 3 heats water, high temperature detection is carried out again, detection is completed, the water pressurizing mechanism 2 is closed, water flows back through the drain pipe 219, the blowing assembly 32 operates, the valve is dried, finally, the valve is loosened, the valve after completion of detection is taken out.

[0164] The above merely describes the preferred embodiment of the present application and is not intended to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve internal and external leakage automatic detection device, comprising a box body and a supporting seat arranged on the box body, characterized in that, Also comprising: a fixing mechanism arranged on the support base and used for pressing and fixing the valve to detect internal and external leakage; a water pressurizing mechanism arranged inside the box and used for supplying water to the valve to detect whether it leaks; a drying mechanism arranged inside the fixing mechanism and the water pressurizing mechanism and used for drying the tested valve to keep its inside dry; a visual detection mechanism arranged inside the fixing mechanism and the water pressurizing mechanism respectively and used for detecting and recording the leakage position of the valve; the fixing mechanism comprises: a pressure sealing assembly arranged on the support base and used for sealing the valve by pressing it; an alignment assembly arranged on the support base and used for clamping the valve to ensure its stability during testing.

2. The valve leakage automatic detection device according to claim 1, characterized in that, the pressure sealing assembly comprises: a hydraulic rod installed on the top of the support base; a pressing cavity arranged on the top rod of the hydraulic rod; a first sealing gasket arranged on the bottom of the pressing cavity; an upper water inlet arranged on the pressing cavity.

3. The valve leakage automatic detection device according to claim 1, characterized in that, the alignment assembly comprises: a slide rod arranged on the support base; a slide plate slidingly arranged on the slide rod; a rubber block arranged on the slide plate and having an arc corner matching the valve; a first motor installed on the support base; a lead screw in transmission connection with the output shaft of the first motor and in screw connection with the slide plate.

4. The valve leakage automatic detection device according to claim 2, characterized in that, the water pressurizing mechanism comprises: a bottom end pressurizing assembly arranged inside the box and used for supplying water from the bottom of the valve to detect internal leakage; a top end pressurizing assembly arranged on the bottom end pressurizing assembly and used for supplying water from the top of the valve to detect internal leakage at the top of the valve.

5. The valve leakage automatic detection device according to claim 4, characterized in that, the bottom end pressurizing assembly comprises: a water pump arranged inside the box; a water inlet pipe connected with the water inlet of the water pump; a water storage tank arranged inside the box and the water inlet pipe extending to the bottom of the water storage tank; a water outlet pipe connected with the water outlet of the water pump; a connecting pipe in communication with the water outlet pipe; a first electromagnetic valve arranged on the connecting pipe for controlling the water supplied from the bottom of the valve; a support cavity arranged on the box; a lower water inlet arranged on the support cavity and in communication with the connecting pipe; a drain pipe in communication with the inside of the support cavity for discharging the tested water; a second electromagnetic valve arranged on the drain pipe for controlling whether to discharge water; a second sealing gasket arranged on the top of the support cavity.

6. The valve leakage automatic detection device according to claim 5, characterized in that, the top end pressurizing assembly comprises: a third electromagnetic valve having its water inlet in communication with one end of the water outlet pipe; a telescopic pipe in communication with the water outlet of the third electromagnetic valve.

7. The valve leakage automatic detection device according to claim 5, characterized in that, the drying mechanism comprises: A heating assembly is arranged in the compression cavity and the support cavity respectively for heating water to provide high temperature working condition; An air blowing assembly is arranged in the support cavity for driving hot air to flow to dry the tested valve.

8. The valve leakage automatic detection device according to claim 7, characterized in that, The heating assembly comprises: A heating rod arranged in the compression cavity in a ring shape; A thermometer arranged in the compression cavity and the support cavity respectively; A heating wire net arranged in the support cavity for heating water to provide high temperature working condition or heating air to dry the valve.

9. The valve leakage automatic detection device according to claim 7, characterized in that, The air blowing assembly comprises: A second motor arranged in the box; A fan blade drivingly connected with the output shaft of the second motor.

10. The valve leakage automatic detection device according to claim 7, characterized in that, The visual detection mechanism comprises: A transparent cover arranged in the compression cavity and the support cavity respectively; A camera arranged in the transparent cover for recording water leakage position; A plurality of flashlights arranged in the transparent cover.

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