Automatic detection equipment for inner leakage and outer leakage of valve

Abstract

The invention provides automatic detection equipment for inner leakage and outer leakage of a valve, which comprises a box body and a supporting seat arranged on the box body, and further comprises a fixing mechanism arranged on the supporting seat and used for pressing and fixing the valve to detect the inner leakage and the outer leakage of the valve; the water pressurizing mechanism is arranged in the box body and is used for detecting whether the valve leaks water or not through water passing; the drying mechanism is arranged in the fixing mechanism and the water pressurizing mechanism and is used for drying the tested valve so as to keep the interior of the valve dry; a visual detection mechanism; valve sealing is guaranteed by arranging the fixing mechanism, automatic detection of internal and external leakage is achieved through the water pressurization mechanism, 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 internal leakage position, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valve detection, and in particular to an automatic detection device for internal and external leakage of valves. Background Art

[0002] Valves are crucial in industrial production. Their common problems are internal leakage and external leakage. Internal leakage means that when the valve is closed, the medium abnormally flows inside the valve, which will reduce the system efficiency, cause energy waste, and may also lead to process deviations. External leakage is that the medium leaks from the valve body to the external environment, which not only pollutes the environment, but may also bring serious safety hazards due to the leakage of flammable, explosive, and toxic media. Therefore, detecting the internal and external leakage of valves is of great significance for ensuring production safety and efficient operation.

[0003] Chinese Patent CN109900437A discloses a device for detecting internal leakage of a valve. Among them, the detection device includes: an acoustic signal detection module for detecting the acoustic signal on the pipeline where 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 signal detected by the acoustic signal detection module and the installation pressure signal detected by the pressure detection module; and a signal sending module for sending the acoustic signal and the installation pressure signal collected by the collection module. The technical solution provided by the present invention solves the problem of continuous online collection of internal leakage signals of valves at petrochemical sites, and can improve the signal collection stability and effectiveness of the valve internal leakage detection device.

[0004] However, in the actual use process, it is found that the valve plates of the valves are all fixed for testing without any opening and closing actions, resulting in external leakage caused by some valves not being tightly closed being judged as unqualified products, causing false alarms; only clean water is used for pressurization during the test process, and for some specific working conditions, the real situation cannot be reflected. For example, under high-temperature working conditions, the valve expands, and the mating clearances of the valve plates all change, and it is not clear whether the leakage requirements are met under high-temperature working conditions; when detecting internal leakage at both ends of the valve respectively, it is necessary to disassemble and refix the other end, resulting in low test efficiency in the valve production process, large full-inspection workload, and inability to achieve automated testing. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic detection device for internal and external leakage of valves in view of the deficiencies of the prior art, which can realize the function of automatically detecting the internal and external leakage of valves through a fixing mechanism and a water pressurization mechanism, and solve the problem of low manual operation efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions: An automatic detection device for internal and external leakage of valves, including a box body and a support seat arranged on the box body, further including: A fixing mechanism, which is arranged on the support seat and is used to press and fix the valve to detect its internal and external leakage; A water pressurizing mechanism, which is arranged inside the box body and is used to supply water to detect whether the valve leaks; A drying mechanism, which is arranged inside the fixing mechanism and the water pressurizing mechanism and is used to dry the valve after testing to keep its interior dry; A visual detection mechanism, which is respectively arranged inside the fixing mechanism and the water pressurizing mechanism and is used to detect and record the leakage position of the valve; The fixing mechanism includes: A pressure sealing assembly, which is arranged on the support seat and is used to seal the valve by pressing it; An alignment assembly, which is arranged on the support seat and is used to clamp the valve to ensure stability during testing.

[0007] Preferably, the pressure sealing assembly includes: A hydraulic rod, which is installed on the top of the support seat; A pressure chamber, which is arranged on the ejector rod of the hydraulic rod; A first sealing gasket, which is arranged at the bottom of the pressure chamber; An upper water inlet, which is arranged on the pressure chamber.

[0008] Preferably, the alignment assembly includes: A slide bar, which is arranged on the support seat; A sliding plate, which is slidably arranged on the slide bar; A rubber block, which is arranged on the sliding plate and whose arc angle fits the valve; A first motor, which is installed on the support seat; A lead screw, which is in transmission connection with the output shaft of the first motor and is threadedly connected to the sliding plate.

[0009] Preferably, the water pressurizing mechanism includes: A bottom-end pressurizing component, which is arranged inside the box body and is used to supply water from the bottom of the valve to detect the internal leakage situation; A top-end pressurizing component, which is arranged on the bottom-end pressurizing component and is used to supply water from the top of the valve to detect the internal leakage situation at the top of the valve.

[0010] Preferably, the bottom pressurizing assembly includes: A water pump, which is arranged inside the box body; A water inlet pipe, which is connected to the water inlet of the water pump; A water storage tank, which is arranged inside the box body and the water inlet pipe extends to the bottom of the water storage tank; A water outlet pipe, which is connected to the water outlet of the water pump; A connecting pipe, which is communicated with the water outlet pipe; A first solenoid valve, which is arranged on the connecting pipe for controlling the water introduced from the bottom of the valve; A support cavity, which is arranged on the box body; A lower water inlet, which is arranged on the support cavity and is communicated with the connecting pipe; A drain pipe, which is communicated with the inside of the support cavity for discharging the water after testing; A second solenoid valve, which is arranged on the drain pipe for controlling whether to drain water; A second gasket, which is arranged on the top of the support cavity.

[0011] Preferably, the top pressurizing assembly includes: A third solenoid valve, the water inlet of which is communicated with one end of the water outlet pipe; A telescopic pipe, which is communicated with the water outlet of the third solenoid valve.

[0012] Preferably, the drying mechanism includes: A heating assembly, which is respectively arranged in the pressing cavity and the support cavity and is used for heating water to provide a high-temperature working condition; A blowing assembly, which is arranged in the support cavity and is used for driving the hot air to flow to dry the valve after testing.

[0013] Preferably, the heating assembly includes: Heating rods, which are arranged inside the pressing cavity and are arranged in a ring shape; Thermometers, which are respectively arranged in the pressing cavity and the support cavity; A heating wire mesh, which is arranged in the support cavity for heating water to provide a high-temperature working condition or heating air to dry the valve.

[0014] Preferably, the blowing assembly includes: A second motor, which is arranged inside the box body; The fan blade is drivingly connected to the output shaft of the second motor.

[0015] Preferably, the visual detection mechanism includes: A transparent cover, which is respectively arranged inside the pressure chamber and the support chamber; A camera, which is arranged inside the transparent cover for recording the water leakage position; A flash lamp, and multiple groups of the flash lamps are arranged inside the transparent cover.

[0016] The beneficial effects of the present invention are as follows: (1) By setting the fixing mechanism, the valve is fixed both horizontally and vertically, ensuring the sealing performance of the valve connection, avoiding water leakage from the connection and affecting the detection.

[0017] (2) By setting the water pressurizing mechanism, water can be filled from the bottom and top of the valve for testing respectively. Without disassembling and reinstalling, the internal leakage conditions of the top and bottom of the valve can be detected. When the valve plate of the valve is opened, its external leakage condition can also be detected, realizing the automated operation of internal and external leakage detection.

[0018] (3) After the test is completed, by opening the valve plate of the valve, the tested water will flow to the bottom and flow back to the water storage tank through the drain pipe, realizing the recycling of the detected water and saving water resources.

[0019] (4) By setting the drying mechanism, on the one hand, the test water can be heated to test the internal and external leakage conditions of the valve under high-temperature working conditions, and cooperate with the thermometer to detect the internal and external leakage conditions of the valve at various temperatures. On the other hand, by heating the air, the tested valve can be dried with hot air to avoid excessive water adhesion inside the valve, affecting its storage and product quality.

[0020] (5) By setting the visual detection mechanism, the internal leakage condition of the valve can be photographed and recorded, and its internal leakage position can be recorded. During the test, the valve plate of the valve can be rotated and adjusted for multiple detections, avoiding the occurrence of internal leakage caused by the valve plate not being screwed in place, and improving the accuracy of detection.

[0021] In summary, the present invention has the advantages of comprehensive and accurate detection, high degree of automation in operation, efficient resource saving, adaptation to various working conditions, and guarantee of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the sliding plate structure of the present invention; Figure 4 For Figure 3 the enlarged structural schematic diagram at position A in Figure 5 the sectional view structural schematic diagram of the pressure chamber of the present invention; Figure 6 the sectional view structural schematic diagram of the transparent cover of the present invention; Figure 7 the sectional view structural schematic diagram of the support chamber of the present invention; Figure 8 the structural schematic diagram of the alignment component of the present invention; Figure 9 the structural schematic diagram of the water pressurizing mechanism of the present invention.

[0023] In the figure: 100, box body; 200, support seat; 300, valve; 1, fixing mechanism; 11, pressure sealing component; 111, hydraulic rod; 112, pressure chamber; 113, first sealing gasket; 114, upper water inlet; 12, alignment component; 121, sliding rod; 122, sliding plate; 123, rubber block; 124, first motor; 125, lead screw; 2, water pressurizing mechanism; 21, bottom pressurizing component; 211, water pump; 212, water inlet pipe; 213, water storage tank; 214, water outlet pipe; 215, connecting pipe; 216, first solenoid valve; 217, support chamber; 218, lower water inlet; 219, drain pipe; 2110, second solenoid valve; 2111, second sealing gasket; 22, top pressurizing component; 221, third solenoid valve; 222, telescopic pipe; 3, drying mechanism; 31, heating component; 311, heating rod; 312, thermometer; 313, heating wire mesh; 32, blowing component; 321, second motor; 322, fan blade; 4, vision detection mechanism; 401, transparent cover; 402, camera; 403, flash lamp. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0026] Embodiment 1 As Figures 1 to 3 shown, this embodiment provides an automatic detection device for internal and external leakage of valves, including a box body 100 and a support seat 200 provided on the box body 100, and further including: A fixing mechanism 1, which is provided on the support seat 200 and is used to press and fix the valve 300 for internal and external leakage detection; A water pressurizing mechanism 2, which is provided inside the box body 100 and is used to detect whether the valve 300 leaks by passing water; A drying mechanism 3, which is provided inside the fixing mechanism 1 and the water pressurizing mechanism 2 and is used to dry the valve 300 after testing to keep its interior dry; A visual detection mechanism 4, which is respectively provided inside the fixing mechanism 1 and the water pressurizing mechanism 2 and is used to detect and record the leakage position of the valve 300; The fixing mechanism 1 includes: A pressure sealing assembly 11, which is provided on the support seat 200 and is used to seal the valve 300 by pressing it; An alignment assembly 12, which is provided on the support seat 200 and is used to clamp the valve 300 to ensure stability during testing.

[0027] In this embodiment, the fixing mechanism 1 is set to fix the valve 300 in the vertical and horizontal directions, ensuring the sealing of the connection of the valve 300. The water pressurizing mechanism 2 is used to detect the internal leakage condition of the valve 300 by passing water from the bottom or the top of the valve 300 respectively. When passing water simultaneously, the external leakage of the valve 300 is detected. The drying mechanism 3 can provide a high-temperature working condition for the detection of the valve 300 to detect the working condition of the valve 300 at different temperatures, and can also dry the valve 300 after the detection to remove the residual moisture inside the valve 300. During the detection process, the visual detection mechanism 4 records the internal leakage condition, realizing the efficient and accurate detection of the internal and external leakage conditions of the valve 300.

[0028] Specifically, in the fixing mechanism 1, the pressure sealing component 11 and the alignment component 12 are closely matched. The pressure sealing component 11 is responsible for sealing the valve 300 to ensure that water does not leak from the connection during detection and guarantee the accuracy of the detection result. The alignment component 12 is used for precise positioning and stable clamping of the valve 300 to avoid the influence of valve shaking on the detection during the test. The two cooperate with each other to firmly fix the valve in both the horizontal and vertical directions, providing a reliable basis for subsequent detection.

[0029] It should be noted that the internal leakage is detected and recorded by the visual detection mechanism 4. When water is passed through both the upper and lower ends of the valve 300 simultaneously, it is for external leakage detection. In case of external leakage, if there are holes in the valve 300, water will spray out, and it can be recorded manually.

[0030] Furthermore, as Figures 1 to 2 shown, the pressure sealing component 11 includes: A hydraulic rod 111, and the hydraulic rod 111 is installed on the top of the support seat 200; A pressure chamber 112, and the pressure chamber 112 is arranged on the ejector rod of the hydraulic rod 111; A first sealing gasket 113, and the first sealing gasket 113 is arranged at the bottom of the pressure chamber 112; An upper water inlet 114, and the upper water inlet 114 is arranged on the pressure chamber 112.

[0031] In this embodiment, by setting the pressure sealing component 11, the top and bottom of the valve 300 are sealed simultaneously. It cooperates with other components to ensure that during the detection of the internal and external leakage of the valve, water can act on the valve 300 stably, and at the same time prevent water from leaking from the top or bottom connections, thus guaranteeing the accuracy and reliability of the detection result and providing a key guarantee for the smooth progress of the entire detection process.

[0032] In detail, the hydraulic rod 111 is installed on the top of the support seat 200 as a power output component. After receiving the command from the control system, the hydraulic drive push rod rises or falls, and the push rod drives the pressure chamber 112 to move. The first sealing gasket 113 at the bottom of the pressure chamber 112 is in close contact with the top of the valve 300 when the pressure chamber 112 descends, and uses its elasticity to fill the gap to prevent water from leaking from the top. The upper water inlet 114 is a water channel. When the water pressurizing mechanism 2 is working, water enters the pressure chamber 112 through it to detect internal leakage at the top of the valve 300.

[0033] It should be noted that the interior of the pressure chamber 112 is hollow and is used to install other mechanisms.

[0034] Further, if Figure 3 and Figure 8 As shown, the alignment component 12 includes: A slide bar 121, wherein the slide bar 121 is disposed on the support seat 200; A sliding plate 122, wherein the sliding plate 122 is slidably disposed on the sliding rod 121; A rubber block 123, wherein the rubber block 123 is disposed on the sliding plate 122 and an arc angle thereof is in contact with the valve 300; A first motor 124, wherein the first motor 124 is mounted on the support base 200; The screw rod 125 is drivingly connected to the output shaft of the first motor 124 and is threadedly connected to the sliding plate 122 .

[0035] In this embodiment, the alignment component 12 is provided to realize 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 detection process without displacement or shaking, thereby ensuring the accuracy and reliability of the detection results. It cooperates with other components such as the pressure sealing component 11 to provide a stable basic condition for valve internal leakage and external leakage detection, so that the entire detection process can proceed smoothly.

[0036] Specifically, the sliding rod 121 is fixedly arranged on the support base 200, providing a sliding track and support for the sliding plate 122. When the first motor 124 is started, 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 will be converted into the linear sliding of the sliding plate 122 along the sliding rod 121. The rubber blocks 123 arranged on the sliding plate 122 have an arc angle that fits the outer 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 finally tightly clamp the valve 300. The rubber blocks 123 have a certain elasticity. When clamping the valve 300, they can not only provide sufficient friction to prevent the valve from sliding but also avoid damaging the valve surface. During the entire detection process, the first motor 124 continuously provides power to ensure the stable rotation of the lead screw 125, so that the sliding plate 122 and the rubber blocks 123 always maintain a stable clamping of the valve 300, ensuring the fixed position of the valve 300 in the horizontal direction.

[0037] Further, as Figures 3 to 4 and Figure 9 shown, the water pressurizing mechanism 2 includes: a bottom pressurizing component 21, which is arranged inside the box body 100 and is used to supply water from the bottom of the valve 300 to detect the internal leakage situation; a top pressurizing component 22, which is arranged on the bottom pressurizing component 21 and is used to supply water from the top of the valve 300 to detect the internal leakage situation at the top of the valve 300.

[0038] In this embodiment, by setting the water pressurizing mechanism 2, not only the comprehensive detection of the internal leakage situation of the valve 300 is realized, but also the external leakage situation can be effectively judged. At the same time, the recycling of the detection water is achieved, significantly improving the detection efficiency and reducing the resource consumption. The bottom pressurizing component 21 and the top pressurizing component 22 work together to supply water from the bottom and top of the valve 300 respectively to detect the internal leakage comprehensively; at the same time, the external leakage is detected when supplying water. During the detection process, it is judged whether there is water seeping out outside the valve by observing, and the leakage position is manually recorded; after the valve plate of the valve 300 is opened, the detected water all flows to the bottom and returns to the water storage tank 213 through the drain pipe 219, realizing the recycling of water resources and providing an efficient and environmentally friendly solution for the entire valve detection work.

[0039] Further, as Figure 7 and Figure 9 shown, the bottom pressurizing component 21 includes: a water pump 211, which is arranged inside the box body 100; a water inlet pipe 212, which is connected to the water inlet of the water pump 211; A water storage tank 213, the water storage tank 213 is arranged inside the box body 100 and the water inlet pipe 212 extends all the way to the bottom of the water storage tank 213; A water outlet pipe 214, the water outlet pipe 214 is connected to the water outlet of the water pump 211; A connecting pipe 215, the connecting pipe 215 is communicated with the water outlet pipe 214; A first solenoid valve 216, the first solenoid valve 216 is arranged on the connecting pipe 215 for controlling the water introduced from the bottom of the valve 300; A support cavity 217, the support cavity 217 is arranged on the box body 100; A lower water inlet 218, the lower water inlet 218 is arranged on the support cavity 217 and is communicated with the connecting pipe 215; A drain pipe 219, the drain pipe 219 is communicated with the inside of the support cavity 217 for discharging the water after testing; A second solenoid valve 2110, the second solenoid valve 2110 is arranged on the drain pipe 219 for controlling whether to drain water; A second gasket 2111, the second gasket 2111 is arranged on the top of the support cavity 217.

[0040] In this embodiment, by setting the bottom pressurizing assembly 21, the internal leakage detection is realized by supplying water from the bottom of the valve 300, as well as the discharge and recycling of the water after detection. This assembly cooperates with other mechanisms to ensure the efficient and accurate progress of the valve detection process, while saving water resources. The water in the water storage tank 213 is transported to the bottom of the valve 300 by the power provided by the water pump 211. The first solenoid valve 216 is used to control the water flow, the second solenoid valve 2110 is used to control the drainage, and the second gasket 2111 ensures the seal, providing stable and reliable conditions for the internal leakage detection at the bottom of the valve.

[0041] Specifically, when detecting internal leakage at the bottom of the valve 300, the water pump 211 is started to pump 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, ensuring full utilization of the water in the tank. After the water pump 211 pressurizes the water, it is conveyed through the water outlet pipe 214 to the connecting pipe 215. The first solenoid 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 gasket 2111 at the top of the support cavity 217 fits tightly with the bottom of the valve 300 to prevent water leakage and ensure the accuracy of the detection. If there is internal leakage in the valve 300, the water will flow out from the leakage point and the position will be recorded by the camera 402. After the detection is completed, the first solenoid valve 216 is closed, and the second solenoid 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.

[0042] Further, as Figure 5 and Figure 9 shown, the top pressurizing assembly 22 includes: A third solenoid valve 221, the water inlet of which is communicated with one end of the water outlet pipe 214; A telescopic pipe 222, which is communicated with the water outlet of the third solenoid valve 221.

[0043] In this embodiment, by setting the top pressurizing assembly 22, water supply from the top of the valve 300 is realized to detect internal leakage at its top. This assembly cooperates with the bottom pressurizing assembly 21 to enable comprehensive internal leakage detection of the valve 300 without disassembling the valve, improving the detection efficiency and accuracy, and providing a reliable basis for judging the sealing performance of the valve.

[0044] Specifically, when detecting internal leakage at the top of the valve 300, the water pump 211 in the bottom pressurizing assembly 21 is started to pump out and pressurize the water in the water storage tank 213. The water is conveyed through the water outlet pipe 214. At this time, the third solenoid valve 221 is opened, and the water in the water outlet pipe 214 will flow into the telescopic pipe 222 communicated with its water inlet. The telescopic pipe 222 can be flexibly adjusted in length according to the actual height of the valve 300 to ensure that its water outlet can accurately dock with the top of the valve 300. The water reaches the top of the valve 300 through the telescopic pipe 222 and enters the valve interior under pressure. If there is internal leakage at the top of the valve, the water will flow out from the leakage point and the position will be recorded by the camera 402 inside the bottom support cavity 217, thus realizing the detection of internal leakage at the top of the valve.

[0045] It should be noted that the valve 300 can be opened and closed multiple times for multiple detections to avoid false detections caused by incomplete closure of the valve 300.

[0046] Further, asFigure 5 and Figure 7 As shown in , the drying mechanism 3 includes: A heating component 31, which is respectively arranged in the pressing cavity 112 and the supporting cavity 217 and is used to heat water to provide a high-temperature working condition; A blowing component 32, which is arranged in the supporting cavity 217 and is used to drive the flow of hot air to dry the valve 300 after testing.

[0047] In this embodiment, by setting the drying mechanism 3, the functions of providing a high-temperature working condition for the valve 300 detection and drying the valve after testing are realized. The heating component 31 can simulate the use situation of the valve in a high-temperature environment, detect its performance under different temperature conditions, and make the detection result more in line with the actual use scenario; the blowing component 32 can quickly remove the residual moisture inside the valve after the detection is completed, prevent the moisture from causing corrosion and other damages to the valve, shorten the detection cycle at the same time, and improve the detection efficiency.

[0048] Specifically, when it is necessary to simulate a high-temperature working condition for valve detection, the heating component 31 starts to work. The heating rod 311 arranged in the pressing cavity 112 or the heating wire mesh 313 in the supporting cavity 217 is electrified to generate heat, heat the water in the pressing cavity 112 or the supporting cavity 217, and 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, so that the valve 300 is detected under high-temperature conditions close to actual use.

[0049] After all detections are completed, it enters the drying stage. 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 supporting cavity 217. At the same time, the second motor 321 of the blowing component 32 starts to drive the fan blade 322 to rotate. The rotation of the fan blade 322 makes the hot air flow rapidly in the supporting cavity 217. The hot air flows through the surface of the valve 300, accelerating the evaporation of moisture, thereby realizing the drying treatment of the valve.

[0050] Embodiment Two As Figure 5 shown, the same or corresponding components as those in Embodiment One are adopted with the corresponding reference numerals in Embodiment One. For the sake of simplicity, only the differences from Embodiment One will be described below. The difference between this Embodiment Two and Embodiment One lies in that: The heating component 31 includes: A heating rod 311, which is arranged inside the pressing cavity 112 and is arranged in a ring shape; A thermometer 312, which is respectively arranged in the pressing cavity 112 and the supporting cavity 217; A heating wire mesh 313 is provided in the support cavity 217 to heat water to provide a high-temperature working condition or heat air to dry the valve 300.

[0051] In this embodiment, by providing the heating assembly 31, the functions of providing a high-temperature working condition for the valve 300 detection and drying the valve 300 after detection are achieved. The heating assembly 31 cooperates with other mechanisms to simulate the usage conditions of the valve in different temperature environments, making the detection results closer to the actual situation. At the same time, it ensures that the valve can be dried in time after detection, avoids damage to the valve caused by moisture residue, and improves the comprehensiveness and reliability of the valve detection.

[0052] Specifically, after all detections are completed, it enters the drying stage. At this time, the heating rod 311 is turned off, and the heating wire mesh 313 continues to work, but its function changes to heating the air in the support cavity 217. The heated air forms a hot air flow in the support cavity 217, opens the valve 300. As the air flows, the hot air flow contacts the surface of the valve 300, accelerating the evaporation of the residual moisture on the surface and inside of the valve, and realizing the drying treatment of the valve.

[0053] Further, as Figure 7 and Figure 9 shown, the blowing assembly 32 includes: A second motor 321, which is arranged inside the box body 100; A fan blade 322, which is in transmission connection with the output shaft of the second motor 321.

[0054] In this embodiment, by providing the blowing assembly 32, the functions of drying the valve after the valve detection is completed and accelerating the hot air circulation during the high-temperature working condition detection are achieved. 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 results, and at the same time makes the high-temperature environment more uniform and stable, providing good conditions for the valve detection.

[0055] Specifically, when the valve completes the internal leakage and external leakage detections and enters the drying stage, at this time, the second motor 321 is started, and its output shaft drives the fan blade 322 connected to it in transmission to rotate at a high speed. The rotation of the fan blade 322 makes the air in the support cavity 217 flow rapidly. In the case where the heating wire mesh 313 has heated the air in the support cavity 217, the flowing hot air will continuously blow the surface and inside of the valve 300, accelerating the evaporation of moisture, thereby realizing the drying of the valve.

[0056] Embodiment III As Figures 5 to 7As shown, components that are the same or corresponding to those in the first embodiment are labeled with corresponding reference numerals as in the first embodiment. For the sake of simplicity, only the differences from the first embodiment will be described below. The differences between the third embodiment and the first embodiment are as follows: The visual detection mechanism 4 includes: A transparent cover 401, which is respectively arranged inside the pressure chamber 112 and the support chamber 217; A camera 402, which is arranged inside the transparent cover 401 for recording the water leakage position; Flashlights 403, and multiple groups of the flashlights 403 are arranged inside the transparent cover 401.

[0057] In this embodiment, by setting up the visual detection mechanism 4, accurate recording of the water leakage position of the internal leakage of the valve 300 is achieved. This mechanism works in coordination with the water pressurization mechanism 2, the fixing mechanism 1, etc., and plays a key role in information collection in the entire valve detection process, helping to improve the detection efficiency and accuracy, and enhancing the control ability of the valve quality.

[0058] Specifically, 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 respectively arranged inside the pressure chamber 112 and the support chamber 217, providing a relatively independent and well-protected working space for the camera 402 and the flashlights 403. It can not only prevent the detection water from splashing onto the camera 402 and the flashlights 403 and affecting their normal operation, but also does not affect the observation of the surface of the valve 300 by the camera 402. The camera 402 is installed inside the transparent cover 401 and always aims at the detection part of the valve 300. Multiple groups of flashlights 403 are turned on during the detection process to provide sufficient and uniform illumination for the shooting of the camera 402. During the process of water pressurization to form a pressure difference inside and outside the valve 300, if there is a water leakage point in the valve, the water flow will flow out from the leakage point. At this time, under the illumination of the flashlights 403, the camera 402 clearly captures the position of the water leakage and the water flow pattern, and records the image information in real time. These recorded image information can be analyzed by the detection personnel later to accurately judge the water leakage situation of the valve.

[0059] It should be noted that the visual detection component 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 chamber 217 is used. When detecting the internal leakage below the valve 300, the visual detection mechanism 4 inside the upper pressure chamber 217 is used.

[0060] Working process First, place the valve 300 on the support cavity 217 of the support base 200. Start the alignment assembly 12. The first motor 124 drives the lead screw 125 to rotate, causing the sliding plate 122 to slide along the slide bar 121. The rubber block 123 clamps the valve to achieve horizontal fixation. Then, the hydraulic rod 111 of the pressure sealing assembly 11 pushes the pressure cavity 112 downward. The first sealing gasket 113 fits against the top of the valve, and the second sealing gasket 2111 fits against the bottom to complete vertical sealing. Subsequently, turn on the water pressurizing mechanism 2. The bottom pressurizing assembly 21 supplies water from the bottom of the valve, or water is supplied from the top pressurizing assembly 22 to detect internal leakage. Supplying water simultaneously from both top and bottom can detect external leakage. The visual inspection mechanism 4 records the leakage location of internal leakage throughout the process. If it is necessary to simulate high-temperature working conditions, the heating component 31 of the drying mechanism 3 heats the water, and the detection is carried out again at high temperature. After the detection is completed, turn off the water pressurizing mechanism 2. The water flows back through the drain pipe 219. The blowing assembly 32 operates to dry the valve. Finally, loosen the valve and take out the valve that has completed the detection.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic detection device for internal and external leakage of a valve, comprising a box body and a support seat arranged on the box body, characterized in that, It further includes: A fixing mechanism which is arranged on the support base and is used to press and fix the valve for detecting internal leakage and external leakage thereof; A water pressurizing mechanism which is arranged inside the box body and is used to detect whether the valve leaks water by passing water; A drying mechanism which is arranged inside the fixing mechanism and the water pressurizing mechanism and is used to dry the valve after testing to keep its interior dry; A visual inspection mechanism which is respectively arranged inside the fixing mechanism and the water pressurizing mechanism and is used to detect and record the leakage position of the valve; The fixing mechanism includes: A pressure sealing assembly which is arranged on the support base and is used to seal the valve by pressing it; An alignment assembly which is arranged on the support base and is used to clamp the valve to ensure stability during testing.

2. The automatic detection device for internal and external leakage of a valve according to claim 1, characterized in that The pressure sealing assembly includes: A hydraulic rod which is installed on the top of the support base; A pressure chamber which is arranged on the ejector rod of the hydraulic rod; A first sealing gasket which is arranged at the bottom of the pressure chamber; An upper water inlet which is arranged on the pressure chamber.

3. An automatic detection device for internal and external leakage of a valve according to claim 1, characterized in that, The alignment assembly includes: A sliding rod which is arranged on the support base; A sliding plate which is slidably arranged on the sliding rod; A rubber block which is arranged on the sliding plate and whose arc angle fits the valve; A first motor which is installed on the support base; A lead screw which is in transmission connection with the output shaft of the first motor and is threadedly connected with the sliding plate.

4. An automatic detection device for internal and external leakage of a valve according to claim 2, characterized in that, The water pressurizing mechanism includes: A bottom-end pressurizing assembly which is arranged inside the box body and is used to supply water from the bottom of the valve to detect internal leakage; A top-end pressurizing assembly which 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.

5. An automatic detection device for internal and external leakage of a valve according to claim 4, characterized in that, The bottom-end pressurizing assembly includes: A water pump which is arranged inside the box body; An inlet pipe which is connected to the water inlet of the water pump; A water storage tank which is arranged inside the box body and the inlet pipe extends to the bottom of the water storage tank; An outlet pipe which is connected to the water outlet of the water pump; A connecting pipe which is communicated with the outlet pipe; A first solenoid valve which is arranged on the connecting pipe and is used to control the water introduced from the bottom of the valve; A support chamber which is arranged on the box body; A lower water inlet which is arranged on the support chamber and is communicated with the connecting pipe; A drain pipe which is communicated with the inside of the support chamber to discharge the water after testing; A second solenoid valve which is arranged on the drain pipe and is used to control whether to drain water; A second sealing gasket which is arranged at the top of the support chamber.

6. An automatic detection device for internal and external leakage of a valve according to claim 5, characterized in that, The top-end pressurizing assembly includes: A third solenoid valve whose water inlet is communicated with one end of the outlet pipe; A telescopic pipe which is communicated with the water outlet of the third solenoid valve.

7. An automatic detection device for internal and external leakage of a valve according to claim 5, characterized in that The drying mechanism includes: A heating component, which is respectively arranged in the pressure chamber and the support chamber and is used to heat water to provide a high temperature working condition; A blowing assembly is disposed in the supporting cavity and is used to drive hot air to flow to dry the valve after the test.

8. An automatic detection device for internal and external leakage of a valve according to claim 7, characterized in that The heating assembly comprises: A heating rod, which is disposed inside the pressure chamber and arranged in a ring shape; Thermometers, which are respectively arranged in the pressure chamber and the support chamber; A heating wire mesh is arranged in the supporting cavity to heat water to provide a high temperature working condition or to heat air to dry the valve.

9. The automatic detection device for internal and external leakage of a valve according to claim 7, characterized in that, The blowing assembly comprises: a second motor, the second motor being arranged inside the box; The fan blades are drivingly connected to the output shaft of the second motor.

10. An automatic detection device for internal and external leakage of a valve according to claim 7, characterized in that, The visual inspection mechanism comprises: A transparent cover, which is respectively arranged inside the pressure chamber and the support chamber; A camera, which is arranged inside the transparent cover and is used to record the location of the water leakage; Flashlights, multiple groups of which are arranged inside the transparent cover.

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