A multifunctional water-tightness detection device capable of quickly switching workpieces

Abstract

This invention provides a multifunctional watertightness testing device capable of rapidly switching workpieces, belonging to the field of watertightness testing technology. It includes a watertightness testing chamber, a hydraulic drive mechanism, a control board, a base plate, a water tank, a cylinder, a support column, a guide column, a connecting column, and an elastic fixing block. The support column has an adjustment component inside, and the guide column has multiple equidistant sliding holes on its outer circumference. The elastic fixing block has a groove inside, and a fixing component is installed between the sliding holes and the groove. By using an electric push rod of the adjustment component to move the plug and physically compress gas, rapid adjustment of the internal pressure of the pipe is achieved, improving the response speed and work efficiency of the test. High-pressure gas pushes the abutment block to compress the elastic sealing ring and the elastic fixing block, achieving a linkage where the higher the pressure, the tighter the seal, effectively preventing seal failure under high-pressure testing and ensuring the accuracy and reliability of the test results.

Description

Technical Field

[0001] This invention relates to the field of watertightness testing technology, and in particular to a multifunctional watertightness testing device capable of quickly switching workpieces. Background Technology

[0002] Intelligent pressure sensors are core pressure detection devices. Based on the pressure balance principle and piezoresistive strain effect, they convert the physical quantity of gas pressure into an electrical signal proportional to the pressure magnitude through the deformation of an internal sensitive diaphragm under force and the cooperation of MEMS sensing elements. They can accurately detect gas pressure parameters and are widely used in fields such as pipe airtightness testing, cavity pressure monitoring, and industrial air pressure measurement and control. They are core precision equipment for pipe pressure and airtightness testing.

[0003] In current pipe fitting pressure testing, intelligent air pressure sensors are generally used to accurately collect and detect the internal air pressure of pipe fittings. However, if it is necessary to increase or decrease the internal test pressure during the pipe fitting pressure testing process, it usually relies on an external air compressor to repeatedly charge or depressurize to achieve pressure regulation. This method of pressure regulation relying on an external air source is not only cumbersome to operate, but also has a slow pressure regulation response speed, which is not easy to meet the needs of efficient and flexible testing. In addition, existing pipe fitting water tightness testing equipment mostly uses quick-change sealing plugs instead of traditional threaded end caps. The sealing ring of the quick connector is used to seal the pipe opening by fitting the pipe fitting. However, when dealing with pipes of different diameters within a certain range, it is often necessary to stop the machine and replace the front sealing structure of the corresponding specification to maintain the accuracy of the monitoring data of the intelligent air pressure sensor. This operation is time-consuming and labor-intensive. After the internal pressure of the pipe fitting is adjusted, the sealing force of the existing connector usually remains unchanged. When the internal pressure of the pipe fitting is too high, the fixed sealing force may not be able to resist the internal high pressure, resulting in seal failure or leakage, which in turn affects the accuracy and reliability of the test results.

[0004] Therefore, this application provides a multifunctional watertightness testing device that can quickly switch workpieces to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multifunctional water tightness testing device that can quickly switch workpieces, so as to solve the problems of existing pipe fitting water tightness testing devices that rely on external air compressors for pressure adjustment, which are cumbersome to operate and slow to respond, and whose sealing force cannot adaptively increase with the internal pressure of the pipe fitting, making them prone to sealing failure under high pressure.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A multifunctional watertightness testing device capable of quickly switching workpieces includes a watertightness testing chamber. A control board is mounted on the top of the chamber via a hydraulic drive mechanism. A base plate is mounted on the bottom of the control board via a connecting strip. A water tank is installed inside the chamber, positioned below the base plate. Multiple cylinders are fixedly connected to the top of the base plate via mounting plates. Support columns are mounted on the output ends of the cylinders. A guide column is fixedly mounted in a circular mounting hole on the inner side of each support column. A connecting column is fixedly mounted on the inner side of each guide column. An elastic fixing block is movably mounted on the outer side of each connecting column. An adjustment component is provided inside the support column for adjusting the internal air pressure of the pipe. Multiple sliding holes are formed in the guide column. A groove is formed inside the elastic fixing block. A fixing component is provided between the sliding holes and the groove for adjusting the deformation state of the elastic fixing block.

[0007] Optionally, the guide column has a first air passage inside, which connects the support column, the connecting column and the elastic fixing block. A second air passage is vertically connected to the first air passage, which is connected to an external air compressor via a hose.

[0008] Optionally, the adjustment assembly includes an electric push rod, the fixed end of which is installed inside the support column, and a plug is installed at the output end of the electric push rod, the plug being slidably and sealingly installed inside the support column.

[0009] Optionally, the fixing component includes multiple plugs, which are slidably connected to the corresponding sliding holes by spring sealing. A connecting rod is fixedly connected to the inner end of each plug, and a stop block is fixedly connected to the inner end of the connecting rod. Multiple elastic sealing rings are slidably installed on the outer side of the stop block, which is slidably connected to the inside of the groove and slidably sleeved on the outside of the connecting post.

[0010] Optionally, the first air passage is located at the center of the guide post, and the plurality of sliding holes are equidistantly located on the outer circumference of the guide post at eccentric positions.

[0011] Optionally, the elastic fixing block is designed with a tapered structure, which is used to accommodate pipes of different diameters.

[0012] Optionally, the abutment is designed as a conical structure, the conical structure of the abutment is used for adjusting the state of the elastic sealing ring, and the inclination direction of the cross section of the abutment is consistent with the inclination direction of the cross section of the elastic fixing block.

[0013] Optionally, a pressure sensor is installed at the top of the connecting column via an air pipe. The pressure sensor is used to detect changes in the air pressure of the input pipe in real time.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, after the pipe fitting is initially positioned and basic pressurization is completed by setting an adjustment component, if it is necessary to adjust the internal air pressure of the pipe fitting under specific working conditions, the electric push rod inside the support column is directly activated. The output end of the electric push rod drives the plug to move. When the plug moves towards the elastic fixed block, it compresses the internal volume of the support column by physical means to squeeze the gas. The squeezed gas is conducted to the inside of the pipe fitting through the first through-hole, thereby realizing the adjustment of the internal air pressure of the pipe fitting. This achieves rapid adjustment of the internal pressure of the pipe fitting, eliminating the need to frequently rely on external air compressors for repeated inflation or deflation operations, shortening the response time of internal pressure adjustment of the pipe fitting, and improving the flexibility and efficiency of the overall watertightness test.

[0015] In the above scheme, by setting a fixed component and an elastic fixing block, the conical elastic fixing block can smoothly slide into the pipe opening of different inner diameters and adaptively fit the inner wall of the pipe, thus facilitating the adaptation to pipes within a certain range. When the electric push rod pushes the plug to compress gas to increase the internal test pressure of the pipe, some high-pressure gas will enter the sliding hole of the guide column, thus smoothly pushing the plug and push rod, causing the conical block to slide synchronously. During this process, the conical surface of the block will uniformly squeeze the elastic sealing ring to deform it. After the elastic sealing ring deforms, it squeezes the elastic fixing block. After being compressed, the elastic fixing block will also deform accordingly, thus fitting more tightly at the pipe opening of the pipe to be tested, thereby increasing the sealing effect between the elastic fixing block and the pipe to be tested. This achieves the linkage effect of the greater the pressure, the tighter the seal, preventing the seal failure caused by excessive internal pressure of the pipe during high-pressure testing, thus ensuring the accuracy and reliability of the watertightness test results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the hydraulic drive mechanism, control board, and base plate structure of the present invention; Figure 4 This is a schematic diagram of the top structure of the base plate of the present invention; Figure 5 This is a schematic diagram of the cylinder, support column, guide column, connecting column, and elastic fixing block of the present invention. Figure 6 This is a schematic diagram of the internal structure of the support column, guide column, connecting column and elastic fixing block of the present invention; Figure 7 This is a schematic diagram of the connection structure of the support column, guide column and connecting column of the present invention; Figure 8This is a schematic diagram of the adjustment component structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the guide post and elastic fixing block of the present invention; Figure 10 This is a schematic diagram of the fixed component structure of the present invention; Figure 11 This is a schematic diagram of the internal structure of the guide column and the connecting column of the present invention.

[0017] Figure label: 1. Watertight testing box; 2. Hydraulic drive mechanism; 3. Control board; 4. Base plate; 5. Water tank; 6. Cylinder; 7. Support column; 8. Guide column; 81. Sliding hole; 82. First air passage; 821. Second air passage; 9. Connecting column; 10. Elastic fixing block; 101. Groove; 11. Adjustment component; 111. Electric push rod; 112. Plug; 12. Fixing component; 121. Plug block; 122. Connecting rod; 123. Abutment block; 124. Elastic sealing ring; 13. Air pressure sensor. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] like Figures 1 to 11As shown, an embodiment of the present invention provides a multifunctional watertightness testing device capable of quickly switching workpieces, including a watertightness testing chamber 1. A control plate 3 is mounted on the top of the watertightness testing chamber 1 via a hydraulic drive mechanism 2. A base plate 4 is mounted on the bottom of the control plate 3 via a connecting strip. A water tank 5 is installed inside the watertightness testing chamber 1, positioned below the base plate 4. Multiple cylinders 6 are fixedly connected to the top of the base plate 4 via mounting plates. Support columns 7 are mounted on the output ends of the multiple cylinders 6. A guide column 8 is fixedly mounted in a circular mounting hole on the inner side of the support column 7. A connecting column 9 is fixedly mounted on the inner side of the guide column 8. An elastic fixing block 10 is movably mounted on the outer side of the connecting column 9. An adjustment component 11 is provided inside the support column 7 for adjusting the internal air pressure of the pipe. Multiple sliding holes 81 are provided on the guide column 8. A groove 101 is provided inside the elastic fixing block 10. The sliding holes 81 and the groove 101 are connected... A fixing component 12 is provided, which is used to adjust the deformation state of the elastic fixing block 10. The pipe to be tested is placed at the designated position on the top of the base plate 4. Then, the cylinder 6 is activated. The output end of the cylinder 6 drives the support column 7 to move, which in turn drives the guide column 8, the connecting column 9, and the elastic fixing block 10 to move towards the pipe. The movement of the elastic fixing block 10 is used to seal the pipe opening, completing the initial positioning and sealing of the pipe. After the pipe is fixed and sealed, the hydraulic drive mechanism 2 is activated. The hydraulic drive mechanism 2 drives the control plate 3 and the base plate 4 to move downward as a whole. As the base plate 4 sinks, the pipe fixed on it is smoothly sent into the water tank 5. When the pipe is completely immersed in the water tank 5, the operator can observe the bubbling or pressure changes of the pipe underwater to intuitively and accurately judge whether the water tightness performance of the pipe meets the standard, thus completing the entire water tightness test process of the pipe.

[0020] The guide column 8 has a first air passage 82 running through it. The first air passage 82 connects the support column 7, the connecting column 9, and the elastic fixing block 10. The first air passage 82 has a second air passage 821 running through it vertically. The second air passage 821 is connected to an external air compressor via a hose. After the pipe is sealed and positioned by the elastic fixing block 10, the external air compressor is started. External compressed air first enters the second air passage 821 through the hose, and then is introduced into the first air passage 82 running through the guide column 8. Since the first air passage 82 connects the support column 7, the connecting column 9, and the elastic fixing block 10 in sequence, the high-pressure gas is smoothly injected into the sealed pipe along the first air passage 82, thereby completing the pressurization operation of the pipe and providing the necessary air pressure conditions for the subsequent water tightness test.

[0021] Adjustment assembly 11 includes an electric actuator 111. The fixed end of the electric actuator 111 is installed inside the support column 7, and a plug 112 is installed at the output end of the electric actuator 111. The plug 112 is slidably installed inside the support column 7. When it is necessary to simulate the load environment and adjust the internal pressure of the sealed pipe fitting, the electric actuator 111 installed inside the support column 7 is activated. The output end of the electric actuator 111 drives the plug 112 to slide in a sealing manner inside the support column 7. When the electric actuator 111 controls the plug 112 to move towards the elastic fixing block 10, the plug 112... The volume of the cavity inside the support column 7 is compressed, thereby squeezing the gas inside the support column 7. Since the support column 7, guide column 8, connecting column 9 and elastic fixing block 10 are interconnected through the first air channel 82, the compressed gas is conducted to the inside of the pipe through the first air channel 82, thereby realizing the adjustment of the air pressure inside the pipe. This not only facilitates watertight testing under a single pressure, but also facilitates the simulation of internal pressure environments under different depths or working conditions, improving the flexibility of the test. In addition, the electric push rod 111 has a fast response speed, which facilitates rapid pressure adjustment and improves the testing efficiency.

[0022] The fixing component 12 includes multiple plugs 121, which are slidably connected to the corresponding sliding holes 81 by spring sealing. A connecting rod 122 is fixedly connected to the inner end of each plug 121, and a stop block 123 is fixedly connected to the inner end of the connecting rod 122. Multiple elastic sealing rings 124 are slidably installed on the outer side of the stop block 123. The stop block 123 is slidably connected inside the groove 101 and slidably sleeved on the outer side of the connecting post 9. When the electric push rod 111 controls the plug body 112 to move towards the elastic fixing block 10 for injection, a portion of high-pressure gas enters the sliding hole 81 on the guide post 8. Under the action of air pressure, the plug 121 inside the sliding hole 81 overcomes the spring force and moves towards the elastic fixing block 10. The spring is further compressed, and the movement of the plug 121 drives the stop block 123 to move synchronously via the connecting rod 122. The sliding of the abutment block 123 inside the groove 101 causes multiple elastic sealing rings 124 slidably installed on the outside of the abutment block 123 to be squeezed and deformed. After the elastic sealing rings 124 deform, they squeeze the elastic fixing block 10. After being compressed, the elastic fixing block 10 also deforms accordingly, thus fitting more tightly to the pipe opening of the pipe to be tested, thereby increasing the sealing effect between the elastic fixing block 10 and the pipe to be tested. While increasing the air pressure inside the pipe, it automatically enhances the sealing force on the pipe opening, realizing the linkage of the greater the pressure, the tighter the seal, effectively preventing the seal failure caused by high pressure, and ensuring the accuracy of the test results. The plug block 121 is slidably connected inside the sliding hole 81 by a spring. When the test is completed and the air pressure inside the pipe is released, the spring force can automatically push the plug block 121 and the abutment block 123 to reset, so that the elastic sealing ring 124 returns to its initial state.

[0023] The first air passage 82 is located at the center of the guide post 8, and multiple sliding holes 81 are equidistantly located on the outer periphery of the guide post 8 at eccentric positions.

[0024] The elastic fixing block 10 is designed with a conical structure to accommodate pipe fittings of different diameters. Since the elastic fixing block 10 is designed with a conical structure, its outer diameter gradually changes along the axial direction. During the process of the cylinder 6 driving the support column 7 and the connecting column 9 to move towards the pipe fitting, the conical surface of the elastic fixing block 10 can easily slide smoothly into the pipe opening of different inner diameters. As the insertion depth increases, the elastic fixing block 10 will adaptively fit the inner wall of the pipe fitting, thereby achieving rapid positioning and sealing of various specifications of pipe fittings and improving the versatility of the device.

[0025] The abutment block 123 is designed with a conical structure. The conical structure of the abutment block 123 is used to adjust the state of the elastic sealing ring 124. The inclination direction of the cross section of the abutment block 123 is consistent with the inclination direction of the cross section of the elastic fixing block 10. When the air pressure pushes the plug block 121 and the connecting rod 122 to move, it will drive the abutment block 123 to slide synchronously inside the groove 101. Since the abutment block 123 is designed with a conical structure, when the abutment block 123 moves, its conical inclined surface will form a wedge-shaped fit with the elastic sealing ring 124. As the abutment block 123 moves continuously, its conical surface will uniformly squeeze the multiple elastic sealing rings 124 that are slidably installed on the outside of the abutment block 123, forcing the elastic sealing rings 124 to deform. The elastic sealing rings 124 transmit the squeezing force to the elastic fixing block 10, thereby strengthening the sealing effect of the elastic fixing block 10 on the pipe opening.

[0026] A pressure sensor 13 is installed at the top of the connecting column 9 via an air pipe. The pressure sensor 13 is used to detect the pressure change of the input pipe in real time. During the entire process of pipe pressure injection and watertightness testing, the pressure sensor 13 installed at the top of the connecting column 9 via an air pipe is in real-time working state. When the external air compressor or regulating component 11 adjusts the internal air pressure of the pipe, the pressure sensor 13 can easily capture and detect the pressure change data inside the input pipe in real time. These data are continuously collected and fed back to the external control system, so as to dynamically reflect the pressure state inside the pipe.

[0027] The working principle of the technical solution provided by this invention is as follows: During the use of this device, the pipe to be tested is placed at the designated position on the top of the base plate 4. Then, the cylinder 6 is activated. The output end of the cylinder 6 drives the support column 7 to move, which in turn drives the guide column 8, connecting column 9, and elastic fixing block 10 to move towards the pipe. During this process, because the elastic fixing block 10 is designed with a conical structure, its conical surface can smoothly slide into the pipe opening of different inner diameters and adaptively fit the inner wall of the pipe, thereby completing the initial positioning and sealing of the pipe. After the pipe is sealed and positioned by the elastic fixing block 10, the external air compressor is started to input normal air pressure. The external compressed air first enters the second air passage 821 through the hose, and then... The first air passage 82, which runs through the guide column 8, is introduced through the second air passage 821. Since the first air passage 82 is connected to the support column 7, the connecting column 9 and the elastic fixing block 10 in sequence, the high pressure gas is smoothly injected into the sealed pipe through the first air passage 82 to complete the pressurization of the pipe. After the pipe is fixed and sealed and pressurized, the hydraulic drive mechanism 2 is started. The hydraulic drive mechanism 2 drives the control plate 3 and the base plate 4 to move downward as a whole, thereby driving the pipe to move downward and so that the pipe is smoothly sent into the water tank 5. When the pipe is completely immersed in the water tank 5, the bubbling of the pipe underwater can be observed to intuitively and accurately determine whether the water tightness of the pipe meets the standard. When it is necessary to simulate the load environment and adjust the internal pressure of the pipe fitting, the electric push rod 111 installed inside the support column 7 is activated. The output end of the electric push rod 111 drives the plug body 112 to slide in a sealing manner inside the support column 7. When the electric push rod 111 drives the plug body 112 to move closer to the elastic fixing block 10 to compress the gas inside the support column 7, the gas is conducted to the inside of the pipe fitting through the first air passage 82 to change the gas pressure inside the pipe fitting. At the same time, a part of the high-pressure gas enters the sliding hole 81, thereby pushing the plug block 121 to move against the spring force. The spring is further compressed. The movement of the plug block 121 drives the conical abutment block 123 to slide synchronously inside the groove 101 through the connecting rod 122. At this time, the conical inclined surface of the abutment block 123 forms a wedge-shaped fit with the elastic sealing ring 124. During the movement of the abutment block 123, it squeezes the elastic sealing ring 124 to deform it. After the elastic sealing ring 124 is deformed, it squeezes the elastic fixing block. 10. When the elastic fixing block 10 is compressed, it will also deform accordingly, thus fitting more tightly to the pipe opening of the pipe to be tested, thereby increasing the sealing effect between the elastic fixing block 10 and the pipe to be tested. While increasing the internal air pressure of the pipe, it automatically enhances the sealing force of the elastic fixing block 10 to the pipe opening, realizing the linkage of the greater the pressure, the tighter the seal, effectively preventing the seal failure caused by high pressure, and ensuring the accuracy of the test results. During the entire pressure injection and water tightness test, the air pressure sensor 13 installed at the top of the connecting column 9 through the air pipe is in real-time working state, continuously capturing and detecting the air pressure change data inside the input pipe, and feeding it back to the external control system to dynamically reflect the pressure state inside the pipe. When the test is completed, the air pressure inside the pipe is released, and under the action of the spring, the plug 121 and the stop block 123 are automatically pushed to reset, so that the elastic sealing ring 124 returns to the initial state, which is convenient for the next pipe test.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A multifunctional watertightness testing device capable of quickly switching workpieces, characterized in that, The system includes a watertightness testing box (1). A control board (3) is mounted on the top of the watertightness testing box (1) via a hydraulic drive mechanism (2). A base plate (4) is mounted on the bottom of the control board (3) via a connecting strip. A water tank (5) is installed inside the watertightness testing box (1) and is located below the base plate (4). A cylinder (6) is fixedly connected to the top of the base plate (4) via multiple mounting plates. Support columns (7) are mounted on the output ends of the multiple cylinders (6). A guide column (8) is fixedly mounted in the circular mounting hole on the inner side of the support column (7). A connecting column (9) is fixedly installed on the inner end of the column (8), and an elastic fixing block (10) is movably installed on the outer side of the connecting column (9). An adjustment component (11) is provided inside the support column (7). The adjustment component (11) is used to adjust the air pressure inside the pipe. The guide column (8) has multiple sliding holes (81). The elastic fixing block (10) has a groove (101) inside. A fixing component (12) is provided between the sliding hole (81) and the groove (101). The fixing component (12) is used to adjust the deformation state of the elastic fixing block (10).

2. The multifunctional watertightness testing device with rapid workpiece switching according to claim 1, characterized in that, The guide column (8) has a first air passage (82) inside, which connects the support column (7), the connecting column (9) and the elastic fixing block (10). The first air passage (82) has a second air passage (821) in the vertical direction, which is connected to an external air compressor through a hose.

3. The multifunctional watertightness testing device with rapid workpiece switching according to claim 1, characterized in that, The adjustment assembly (11) includes an electric push rod (111), the fixed end of which is installed inside the support column (7), and a plug (112) is installed at the output end of the electric push rod (111), which is sealed and slidably installed inside the support column (7).

4. A multifunctional watertightness testing device capable of quickly switching workpieces according to claim 2, characterized in that, The fixing component (12) includes multiple plugs (121), which are slidably connected to the corresponding sliding holes (81) by spring sealing. A connecting rod (122) is fixedly connected to the inner end of each plug (121), and a stop block (123) is fixedly connected to the inner end of each connecting rod (122). Multiple elastic sealing rings (124) are slidably installed on the outer side of the stop block (123). The stop block (123) is slidably connected to the inside of the groove (101) and slidably sleeved on the outside of the connecting column (9).

5. A multifunctional watertightness testing device capable of quickly switching workpieces according to claim 4, characterized in that, The first air passage (82) is located at the center of the guide post (8), and the multiple sliding holes (81) are equidistantly located on the outer periphery of the guide post (8) at the eccentric position.

6. The multifunctional watertightness testing device capable of quickly switching workpieces according to claim 1, characterized in that, The elastic fixing block (10) is designed with a conical structure, and the conical structure of the elastic fixing block (10) is used to adapt to pipes of different diameters.

7. A multifunctional watertightness testing device capable of quickly switching workpieces according to claim 4, characterized in that, The abutment (123) is designed as a conical structure. The conical structure of the abutment (123) is used for the state adjustment of the elastic sealing ring (124). The inclination direction of the cross section of the abutment (123) is consistent with the inclination direction of the cross section of the elastic fixing block (10).

8. A multifunctional watertightness testing device capable of quickly switching workpieces according to claim 1, characterized in that, A pressure sensor (13) is installed at the top of the connecting column (9) through an air pipe. The pressure sensor (13) is used to detect the pressure change of the input pipe in real time.

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