Valve interface air tightness detection structure

Abstract

The application discloses a valve interface air tightness detection structure and particularly relates to the field of valve interface detection, which comprises a detection table, the top of the detection table is provided with a valve body, and the two sides of the valve body are communicated with valve interfaces; the valve body is stably clamped by a plurality of clamping plates, then the valve interfaces on the two sides of the valve body are blocked by the right plug cylinder and the left plug cylinder on the two sides, and the right plug cylinder side air cylinder can send the dust smoke flow into the valve body, the filled smoke flow is diffused in the valve body under the action of continuous pressurization, the detection effect is improved, the detection result can be intuitively reflected through the smoke flow sprayed when there is air leakage, and the smoke flow in the valve body is sucked out by the negative pressure generated by the reversely moving piston plate in the air cylinder after the detection is completed, so that unnecessary influence of the smoke flow on the valve body is avoided.

Description

Technical Field

[0001] This invention relates to the field of valve interface testing technology, and more specifically, to a valve interface airtightness testing structure. Background Technology

[0002] Valves are important tools for controlling the flow between pipelines. Large valves are commonly used in industrial pipelines and sometimes in dams, ships, rockets and other fields. Due to their large size and complex structure, they require strict quality inspection and management during design, manufacturing, assembly and maintenance to ensure their safety and reliability during use.

[0003] Existing technologies for valve interface airtightness testing mostly involve filling the valve with gas and monitoring changes in gas pressure. However, they lack the ability to directly observe the location of leaks at the valve interface. In other words, they lack a structural design that can continuously fill the valve interface with gas during testing and simultaneously reflect whether there is a leak and the location of the leak, which affects the observation efficiency of valve interface airtightness testing.

[0004] To address the aforementioned technical shortcomings, a solution is provided. Summary of the Invention

[0005] This invention provides a valve interface airtightness detection structure to solve the technical problem mentioned in the background art that the prior art cannot simultaneously reflect whether there is air leakage and the location of air leakage when continuously filling the valve interface with gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a valve interface airtightness testing structure, including a testing platform, a valve body on the top of the testing platform, valve interfaces connected to both sides of the valve body, a placement mechanism on the top of the testing platform, and an air guiding testing mechanism and an exhaust mechanism on both sides of the top of the testing platform.

[0007] The placement mechanism clamps the valve body placed on top of it through a clamping structure that is elastically supported on both sides, and the placement mechanism itself can slide on the top of the testing table as the valve body is squeezed to adjust its center position.

[0008] The gas guiding detection mechanism clamps and blocks the valve interfaces on both sides of the valve body to form an airflow channel, and pressurizes it by filling it with smoke gas.

[0009] After being detected by the air guiding detection mechanism, the exhaust mechanism extracts and discharges the smoke and gas flow inside the valve body through negative pressure.

[0010] In a preferred embodiment, the placement mechanism includes a slide plate, pads, clamps, and a first spring. The slide plate is slidably mounted on the top of the testing platform. Two sets of pads in a horizontal state are vertically slidably mounted on the top of the slide plate. Slide grooves are provided on both sides of the top of the two sets of pads. Clamps in pairs that are symmetrical to each other are slidably mounted on the inner walls of the slide grooves. The tops of the clamps are inclined upwards. The first springs that are fixedly connected to the inner walls of the slide grooves are fixedly mounted on the outer walls of the clamps.

[0011] In a preferred embodiment, the gas guiding detection mechanism includes a motor, a rotating rod, a lead screw groove, a top plate, a second spring, a clamping plate, a right plug cylinder, and a left plug cylinder. A motor is fixedly installed on one side of the detection platform. A rotating rod that is rotatably installed on the inner wall of the detection platform is fixedly installed at the output end of the motor. Lead screw grooves are formed on the outer walls of both sides of the rotating rod. An L-shaped top plate is threadedly connected to the outer walls of the two lead screw grooves. A second spring is fixedly connected to the top of the two top plates. Two clamping plates that are slidably installed on the top of the top plates are fixedly installed on one side of the two second springs. A right plug cylinder and a left plug cylinder that are conical are fixedly installed on the top of the two clamping plates.

[0012] In a preferred embodiment, the air guiding detection mechanism further includes a connecting pipe, a slot, and a dustproof cloth. One side of the right plug cylinder is connected to the connecting pipe, and the bottom inner wall of the connecting pipe has a slot. The other side of the connecting pipe is fixedly installed with a dustproof cloth that fits against the inner wall of the connecting pipe. The other side of the connecting pipe is connected to a horizontally arranged air cylinder. The inner wall of the air cylinder is provided with a piston plate that fits against the inner wall of the air cylinder. The outer wall of the piston plate is fixedly installed with a first push rod that penetrates the outer wall of the air cylinder.

[0013] In a preferred embodiment, the air guiding detection mechanism further includes an air cylinder, a piston plate, and a first push rod. The other side of the connecting pipe is connected to a horizontally arranged air cylinder. The inner wall of the air cylinder is provided with a piston plate that fits against the inner wall of the air cylinder. The outer wall of the piston plate is fixedly installed with a first push rod, which penetrates the outer wall of the air cylinder.

[0014] In a preferred embodiment, a vertically positioned metal lever is rotatably mounted on one side of the first push rod, the metal lever being perpendicular to the first push rod.

[0015] In a preferred embodiment, the bottom outer wall of the metal lever is provided with a magnetic sleeve, the magnetic sleeve is arranged in a U-shape, a second push rod in a horizontal state is fixedly installed on one side of the magnetic sleeve, a third spring fixedly connected to the top plate is fixedly installed on one side of the second push rod, and a sleeve fixedly connected to the outer wall of the top plate is sleeved on one side of the outer wall of the second push rod.

[0016] In a preferred embodiment, the exhaust mechanism includes an air inlet slot, a rubber ball, and a mesh screen. The inner wall of the left plug cylinder has an air inlet slot that penetrates the middle of the left plug cylinder. The air inlet slot is funnel-shaped. The inner wall of the air inlet slot is provided with a rubber ball. The outer wall of the rubber ball is in contact with the inner wall of the air inlet slot. The end of the air inlet slot is fixedly installed with a mesh screen that is fixedly connected to the left plug cylinder.

[0017] In a preferred embodiment, the outer walls of the right and left plugs are made of rubber, and the right and left plugs are respectively in contact with the inner walls of the valve interfaces on both sides of the valve body.

[0018] The technical effects and advantages of this invention are as follows:

[0019] The placement mechanism of this invention uses multiple clamps to squeeze and hold the valve body to be tested under the elastic drive of the first spring, keeping it horizontal and stable. The air guiding detection mechanism first drives the piston plate in the air cylinder on the right side of the plug cylinder to move, and the generated smoke airflow with dust enters the valve body, filling the valve body with smoke airflow and dispersing it inside the valve body to empty the original air inside the valve body.

[0020] Then, the right and left plugs, which are close to each other on both sides, are inserted into the valve interfaces on both sides through the gas guiding detection mechanism to stably clamp the valve body and are suitable for valve structures of any specification. The right and left plugs then seal the two sides of the right and left plugs to form a sealed top pressure state. At this time, the continuously compressed smoke airflow performs air tightness detection on the valve body and displays the leakage of the damaged valve body.

[0021] After the test is completed, the smoke and airflow inside the valve body is released from the restriction by unlocking the metal lever on the exhaust mechanism. Then, it moves backward and pulls the piston plate to move backward in the air cylinder to generate negative pressure, which continuously draws out the smoke and airflow inside the valve body. The smoke and airflow is filtered through the dustproof cloth, and the air is discharged while the dust is separated and collected.

[0022] In summary, after the valve body is stably clamped by multiple clamping plates, the valve interfaces on both sides of the valve body are blocked and connected by the adjacent right and left plug cylinders on both sides. This allows the air cylinder on the right side to send in dusty smoke gas. The injected smoke gas diffuses into the valve body under continuous pressure. While testing the air tightness, the smoke gas that is ejected when there is a leak can also be used to visually reflect the leak, improving the testing effect. After the test is completed, the piston plate that moves in the opposite direction inside the air cylinder generates negative pressure to suck out the smoke gas from the valve body, avoiding unnecessary impact of the smoke gas on the valve body. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram showing the positions of the placement mechanism and the gas guiding detection mechanism in this invention.

[0025] Figure 3 This is a detailed structural diagram of the placement mechanism in this invention.

[0026] Figure 4 This is a partial detailed unfolded view of the gas guiding detection mechanism in this invention.

[0027] Figure 5 This is a diagram showing the internal structure of the gas guiding detection mechanism in this invention.

[0028] Figure 6 For the present invention Figure 5 Enlarged view of the detailed structure of part A.

[0029] Figure 7 This is a detailed unfolded view of the exhaust mechanism in this invention.

[0030] The attached diagram is labeled as follows: 1. Testing platform; 2. Valve body; 3. Valve interface; 4. Placement mechanism; 41. Slide plate; 42. Pad plate; 43. Clamping plate; 44. First spring; 5. Air guiding detection mechanism; 51. Motor; 52. Rotating rod; 53. Screw groove; 54. Top plate; 55. Second spring; 56. Clamping plate; 57. Right plug cylinder; 58. Left plug cylinder; 59. Connecting pipe; 510. Slot; 511. Dustproof cloth; 512. Air cylinder; 513. Piston plate; 514. First push rod; 515. Metal lever; 516. Magnet sleeve; 517. Second push rod; 518. Third spring; 519. Sleeve; 6. Exhaust mechanism; 61. Air inlet slot; 62. Rubber ball; 63. Partition net. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Refer to the instruction manual appendix Figures 1-7 A valve interface airtightness detection structure, such as Figure 1 and Figure 2As shown, the device includes a testing platform 1, a valve body 2 on the top of the testing platform 1, valve interfaces 3 on both sides of the valve body 2, a placement mechanism 4 on the top of the testing platform 1, and a gas guiding detection mechanism 5 and an exhaust mechanism 6 on both sides of the top of the testing platform 1. The placement mechanism 4 clamps the valve body 2 placed on its top through a clamping structure that is elastically supported on both sides. The placement mechanism 4 itself can slide on the top of the testing platform 1 as the valve body 2 is squeezed and its center position is adjusted. The gas guiding detection mechanism 5 clamps and blocks the valve interfaces 3 on both sides of the valve body 2 to form an airflow channel and pressurizes it by filling it with smoke gas. After the gas guiding detection mechanism 5 has detected the smoke gas, the exhaust mechanism 6 extracts and discharges the smoke gas inside the valve body 2 through negative pressure.

[0033] like Figure 2 and Figure 3 As shown, the placement mechanism 4 includes a slide plate 41, a pad 42, a clamping plate 43, and a first spring 44. The slide plate 41 is slidably installed on the top of the detection table 1. Two sets of pads 42 in a horizontal state are vertically slidably installed on the top of the slide plate 41. Slide grooves are opened on both sides of the top of the two sets of pads 42. Clamping plates 43 in pairs are slidably installed on the inner walls of the multiple slide grooves. The tops of the multiple clamping plates 43 are inclined upwards. The first spring 44, which is fixedly connected to the inner wall of the slide groove, is fixedly installed on the outer wall of the multiple clamping plates 43.

[0034] The specific implementation of the placement mechanism 4 is as follows: by placing the valve body 2 to be tested in the position composed of multiple clamping plates 43, the valve body 2 presses down on the two sets of pads 42 to maintain a certain height, and its outer wall is squeezed and clamped by the clamping plates 43 driven by the first spring 44 to maintain horizontal stability.

[0035] The valve body 2 is then clamped from both sides by the gas guiding detection mechanism 5, allowing the valve body 2 to automatically adapt and slide to the clamped position according to its own length. Figure 4 , Figure 5 and Figure 6As shown, the gas guiding detection mechanism 5 includes a motor 51, a rotating rod 52, a screw groove 53, a top plate 54, a second spring 55, a clamping plate 56, a right plug cylinder 57, and a left plug cylinder 58. The motor 51 is fixedly installed on one side of the detection table 1. The output end of the motor 51 is fixedly installed with a rotating rod 52 that is rotatably installed on the inner wall of the detection table 1. Screw grooves 53 are opened on the outer walls of both sides of the rotating rod 52. The outer walls of the two screw grooves 53 are threaded to an L-shaped top plate 54. The top of the two top plates 54 is fixedly connected to the second spring 55. Two clamping plates 56 are slidably installed on the top of the top plate 54 on one side of the two second springs 55 respectively. The top of the two clamping plates 56 is fixedly installed with a conical right plug cylinder 57 and a left plug cylinder 58 respectively. The outer walls of the right plug cylinder 57 and the left plug cylinder 58 are made of rubber. The right plug cylinder 57 and the left plug cylinder 58 are respectively in contact with the inner walls of the valve interfaces 3 on both sides of the valve body 2.

[0036] like Figure 5 and Figure 6 As shown, the air guiding detection mechanism 5 also includes a connecting pipe 59, a slot 510, a dustproof cloth 511, an air cylinder 512, a piston plate 513, and a first push rod 514. One side of the right plug cylinder 57 is connected to the connecting pipe 59. The bottom inner wall of the connecting pipe 59 has a slot 510, which contains powdery colored dust. The other side of the connecting pipe 59 is fixedly installed with a dustproof cloth 511 that fits against the inner wall of the connecting pipe 59. The other side of the connecting pipe 59 is connected to a horizontally arranged air cylinder 512. The inner wall of the air cylinder 512 has a piston plate 513 that fits against the inner wall of the air cylinder 512. The outer wall of the piston plate 513 is fixedly installed with a first push rod 514, which penetrates the outer wall of the air cylinder 512.

[0037] like Figure 5 and Figure 6 As shown, a vertical metal lever 515 is rotatably mounted on one side of the first push rod 514. The metal lever 515 and the first push rod 514 are perpendicular to each other. A magnet sleeve 516 is provided on the bottom outer wall of the metal lever 515. The magnet sleeve 516 is arranged in a U-shape. A horizontal second push rod 517 is fixedly mounted on one side of the magnet sleeve 516. A third spring 518, which is fixedly connected to the top plate 54, is fixedly mounted on one side of the second push rod 517. A sleeve 519, which is fixedly connected to the outer wall of the top plate 54, is sleeved on one side of the outer wall of the second push rod 517. Under normal conditions, the metal lever 515 on one side of the first push rod 514 remains vertical and is magnetically fixed by the magnet sleeve 516, that is, the metal lever 515 and the magnet sleeve 516 are fixedly connected.

[0038] The motor 51 drives the rotating rod 52 and the lead screw groove 53 to rotate. The rotating rod 52 drives the top plates 54 on both sides to move closer to each other. The two top plates 54 first drive the second spring 55 and the clamping plate 56 to bring the right plug cylinder 57 and the left plug cylinder 58 on both sides closer and insert them into the valve interfaces 3 on both sides. At this time, the right plug cylinder 57 and the left plug cylinder 58 on both sides squeeze the valve body 2 and slide it towards the center position through the slide plate 41. At the same time, the right plug cylinder 57 and the left plug cylinder 58 squeeze the valve interface 3, so that the valve body 2 is adjusted up and down by the force on both sides and is kept at the height of horizontal alignment with the right plug cylinder 57 and the left plug cylinder 58. At the same time, the outer wall of the right plug cylinder 57 and the left plug cylinder 58 fits with the inside of the valve interface 3 to form a sealed top pressure state. The two top plates 54 continue to move and continue to compress the second spring 55, so that the second spring 55 on both sides is pressed tightly against the clamping plate 56 on both sides and the right plug cylinder 57 and the left plug cylinder 58 on it for stability.

[0039] At the same time, the top plate 54 on one side moves synchronously, driving the sleeve 519 and the third spring 518 and the second push rod 517 inside it. The second push rod 517 first drives the magnet sleeve 516 and the metal lever 515 to move. The metal lever 515 drives the first push rod 514 to push the piston plate 513 to compress the airflow in the air cylinder 512. Before the right plug cylinder 57 and the left plug cylinder 58 block the valve interface 3, the airflow in the air cylinder 512 first enters the connecting pipe 59 and flows into the right plug cylinder 57. At this time, the dust in the slot 510 is blown into the valve body 2 by the airflow, making the valve body 2 full of dusty smoke airflow.

[0040] After the valve interface 3 is blocked by the right plug 57 and the left plug 58, the air pressure is continuously applied by the air flow in the air cylinder 512 to detect the air tightness of the valve body 2 and the valve interface 3. At this time, not only can the air tightness be detected, but the air leakage can also be directly reflected by the smoke air flow directly sprayed from the leaking position.

[0041] After the test, the smoke and gas inside the valve body 2 are promptly discharged through the exhaust mechanism 6 to avoid any adverse effects, such as... Figure 5 and Figure 7 As shown, the exhaust mechanism 6 includes an air inlet slot 61, a rubber ball 62, and a mesh 63. The inner wall of the left plug cylinder 58 is provided with an air inlet slot 61 that penetrates the middle of the left plug cylinder 58. The air inlet slot 61 is funnel-shaped. The inner wall of the air inlet slot 61 is provided with a rubber ball 62. The outer wall of the rubber ball 62 is in contact with the inner wall of the air inlet slot 61. When air is introduced into the valve body 2 for pressurization, the rubber ball 62 is squeezed and blocked by the air pressure to block the air inlet slot 61. The end of the air inlet slot 61 is fixedly installed with a mesh 63 that is fixedly connected to the left plug cylinder 58.

[0042] The exhaust mechanism 6 is implemented as follows: after a period of testing, the bottom of the metal lever 515 is disengaged from the magnet sleeve 516 by moving the metal lever 515, and then the metal lever 515 is pulled backward. The metal lever 515 drives the piston plate 513 to move backward in the air cylinder 512 to draw in air. At this time, the negative pressure in the air cylinder 512 draws in the connected valve body 2, and the rubber ball 62 in the air inlet slot 61 on the left plug cylinder 58 moves backward and opens, thereby facilitating the overall airflow. The smoke and airflow in the valve body 2 are directly drawn into the connecting pipe 59, and the dust is blocked by the dustproof cloth 511 and falls into the slot 510 for circulation collection.

[0043] The embodiments of the present invention have been described above. However, the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A valve interface airtightness testing structure, comprising a testing platform (1), wherein a valve body (2) is provided on the top of the testing platform (1), and valve interfaces (3) are connected to both sides of the valve body (2), characterized in that, The top of the testing platform (1) is provided with a placement mechanism (4), and the top sides of the testing platform (1) are provided with a gas guiding testing mechanism (5) and an exhaust mechanism (6). The placement mechanism (4) clamps the valve body (2) placed on top of it through the clamping structure that is elastically supported on both sides, and the placement mechanism (4) itself can slide on the top of the detection table (1) when the valve body (2) is squeezed to adjust the center position. The gas guiding detection mechanism (5) clamps and blocks the valve interfaces (3) on both sides of the valve body (2) to form an airflow channel, and fills in the smoke airflow for pressurization; After the exhaust mechanism (6) has been tested by the gas guiding detection mechanism (5), it extracts and discharges the smoke and gas flow inside the valve body (2) through negative pressure.

2. The valve interface airtightness detection structure according to claim 1, characterized in that: The placement mechanism (4) includes a slide plate (41), a pad plate (42), a clamping plate (43), and a first spring (44). The top of the testing table (1) is slidably mounted with a slide plate (41). The top of the slide plate (41) is vertically slidably mounted with two sets of pad plates (42) in a horizontal state. The top sides of the two sets of pad plates (42) are provided with sliding grooves. The inner walls of the multiple sliding grooves are slidably mounted with clamping plates (43) that are symmetrical to each other. The tops of the multiple clamping plates (43) are inclined upwards. The outer walls of the multiple clamping plates (43) are fixedly mounted with a first spring (44) that is fixedly connected to the inner wall of the sliding groove.

3. The valve interface airtightness detection structure according to claim 1, characterized in that: The gas guiding detection mechanism (5) includes a motor (51), a rotating rod (52), a screw groove (53), a top plate (54), a second spring (55), a clamping plate (56), a right plug cylinder (57), and a left plug cylinder (58). A motor (51) is fixedly installed on one side of the detection platform (1). A rotating rod (52) that is rotatably installed on the inner wall of the detection platform (1) is fixedly installed at the output end of the motor (51). Screw grooves (53) are opened on the outer walls of both sides of the rotating rod (52). The outer walls of the two screw grooves (53) are threadedly connected to an L-shaped top plate (54). The top of the two top plates (54) is fixedly connected to a second spring (55). Two clamping plates (56) that are slidably installed on the top of the top plate (54) are fixedly installed on one side of the two second springs (55). The top of the two clamping plates (56) is fixedly installed with a right plug cylinder (57) and a left plug cylinder (58) that are conical.

4. The valve interface airtightness detection structure according to claim 3, characterized in that: The air guiding detection mechanism (5) also includes a connecting pipe (59), a slot (510), and a dustproof cloth (511). One side of the right plug cylinder (57) is connected to the connecting pipe (59), and the bottom inner wall of the connecting pipe (59) is provided with a slot (510). The other side of the connecting pipe (59) is fixedly installed with a dustproof cloth (511) that fits against the inner wall of the connecting pipe (59).

5. The valve interface airtightness detection structure according to claim 4, characterized in that: The air guiding detection mechanism (5) also includes an air cylinder (512), a piston plate (513), and a first push rod (514). The other side of the connecting pipe (59) is connected to the horizontally arranged air cylinder (512). The inner wall of the air cylinder (512) is provided with a piston plate (513) that fits against the inner wall of the air cylinder (512). The outer wall of the piston plate (513) is fixedly installed with a first push rod (514), which penetrates the outer wall of the air cylinder (512).

6. The valve interface airtightness detection structure according to claim 5, characterized in that: A vertical metal lever (515) is rotatably mounted on one side of the first push rod (514), and the metal lever (515) is perpendicular to the first push rod (514).

7. The valve interface airtightness detection structure according to claim 6, characterized in that: The bottom outer wall of the metal lever (515) is provided with a magnet sleeve (516), the magnet sleeve (516) is arranged in a door shape, a second push rod (517) in a horizontal state is fixedly installed on one side of the magnet sleeve (516), a third spring (518) fixedly connected to the top plate (54) is fixedly installed on one side of the second push rod (517), and a sleeve (519) fixedly connected to the outer wall of the top plate (54) is sleeved on one side of the outer wall of the second push rod (517).

8. The valve interface airtightness detection structure according to claim 3, characterized in that: The exhaust mechanism (6) includes an air inlet groove (61), a rubber ball (62), and a mesh (63). The inner wall of the left plug cylinder (58) is provided with an air inlet groove (61) that penetrates the middle of the left plug cylinder (58). The air inlet groove (61) is funnel-shaped. The inner wall of the air inlet groove (61) is provided with a rubber ball (62). The outer wall of the rubber ball (62) is in contact with the inner wall of the air inlet groove (61). The end of the air inlet groove (61) is fixedly installed with a mesh (63) that is fixedly connected to the left plug cylinder (58).

9. The valve interface airtightness detection structure according to claim 3, characterized in that: The outer walls of the right plug (57) and the left plug (58) are made of rubber, and the right plug (57) and the left plug (58) are respectively attached to the inner walls of the valve interfaces (3) on both sides of the valve body (2).

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