A valve pressure testing machine with adaptive sealing

Abstract

The utility model relates to valve pressure testing machine technical field, concretely is a kind of self-adapting sealing valve pressure testing machine, including clamping seat, and the sealing plate of being fixed on the clamping seat, sealing mechanism is arranged on the sealing plate, the sealing mechanism includes multiple sealing units, multiple sealing units are annular array distribution.The utility model sets up sealing mechanism and inflation mechanism, multiple sealing units are annular array distribution, the inflation of different ring area units can be independently controlled by inflation mechanism, automatically adapt to the sealing surface of valve of different caliber, flange standard, can effectively improve work efficiency and enhance versatility, simultaneously, the inflation area and air pressure size can be accurately controlled using inflation mechanism, realize the quick adjustment of low-pressure sealing to high-pressure sealing, for high-pressure test scene, sealing specific pressure can be improved by increasing sealing unit air pressure;For soft sealing valve, air pressure can be reduced, avoid excessive compression damage sealing surface.

Description

Technical Field

[0001] This utility model relates to the field of valve testing machine technology, specifically to an adaptive sealing valve testing machine. Background Technology

[0002] Valves are essential equipment widely used in industries such as chemical, petroleum, and natural gas to control fluid flow. Leaks after valve installation can significantly impact subsequent production and even endanger personal safety; therefore, valve tightness testing is a crucial test conducted before valve installation.

[0003] Existing methods for testing the sealing performance and pressure resistance of valves involve using valve testing machines. These machines typically employ integral sealing rings or fixed-size gaskets for end-face sealing. However, single-size sealing rings can only match valves of a specific diameter, requiring frequent replacements for valves of different specifications, resulting in cumbersome and inefficient operations. Furthermore, traditional sealing rings rely on pre-tightening force for sealing, which is prone to leakage due to elastic failure under high pressure or pressure fluctuations, and cannot dynamically adjust the sealing pressure ratio based on the test pressure. In particular, effective sealing is difficult to achieve for non-standard valves, such as irregular flanges, requiring customized tooling and exhibiting poor versatility.

[0004] In view of this, we propose an adaptive sealing valve pressure testing machine. Utility Model Content

[0005] The purpose of this invention is to provide an adaptive sealing valve testing machine, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An adaptive sealing valve pressure testing machine includes a testing platform, a support frame fixedly mounted on the testing platform, a clamping seat provided on the support frame, and a sealing plate fixed on the clamping seat. A sealing mechanism is provided on the sealing plate, the sealing mechanism including multiple sealing units arranged in a ring array; an air inflation mechanism is provided between the sealing units and the sealing plate.

[0007] Preferably, the sealing unit includes a protrusion, which is located on one side of the sealing unit, and a groove is provided on the side of the sealing unit away from the protrusion, and the protrusion and the groove are adapted to each other.

[0008] Preferably, a second protrusion is provided on the side of the sealing unit adjacent to the first protrusion, and a second slot is provided on the side of the sealing unit away from the second protrusion, and the second protrusion and the second slot are adapted to each other.

[0009] Preferably, the sealing unit is detachably mounted on the sealing plate, and the sealing unit as a whole constitutes multiple contacting annular structures. The multiple sealing units located on the same annular ring are connected to an inflation ring through a piston block, and the sealing unit and the inflation ring are in communication.

[0010] Preferably, the inflation mechanism includes an inflation tube, the inflation tube and the inflation ring are fixedly connected by a pipe, and the inflation ring is fixedly connected to the sealing plate.

[0011] Preferably, a sealing ring is slidably installed inside the inflation tube, and a screw is rotatably installed on the sealing ring, with the screw threadedly connected to the inflation tube.

[0012] Preferably, a second sealing ring is slidably installed inside the inflation tube, and a second screw is rotatably installed on the second sealing ring. The second screw is threadedly connected to the inflation tube, and an air inlet tube is fixedly connected through the second screw and the second sealing ring.

[0013] By employing the above technical solution, this utility model provides an adaptive sealing valve pressure testing machine that has at least the following beneficial effects: (1) By setting a sealing mechanism and an inflation mechanism, multiple sealing units are arranged in a ring array. The inflation mechanism can independently control the expansion of different ring units and automatically adapt to the sealing surfaces of valves with different diameters and flange standards, which can effectively improve work efficiency and enhance versatility. At the same time, the inflation mechanism can accurately control the inflation area and the pressure, and realize the rapid adjustment from low-pressure sealing to high-pressure sealing. For high-pressure test scenarios, the sealing pressure can be increased by increasing the pressure of the sealing unit. For soft-seal valves, the pressure can be reduced to avoid excessive compression and damage to the sealing surface.

[0014] (2) The sealing units of this utility model achieve an interference fit through protrusion one and groove one, and protrusion two and groove two, to avoid leakage between units, form a continuous sealing ring, enhance the sealing performance of the sealing units, and avoid leakage between sealing units during pressure testing. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the sealing unit structure of this utility model; Figure 5 This is a schematic diagram of the disassembled sealing mechanism of this utility model; Figure 6 This is a schematic diagram of the inflation mechanism of this utility model; Figure 7 This is a schematic diagram of the internal structure of the inflation mechanism of this utility model.

[0016] In the diagram: 1. Clamping seat; 2. Sealing plate; 3. Sealing mechanism; 4. Inflating mechanism; 5. Testing table; 6. Support frame; 7. Operating table; 31. Sealing unit; 32. Protrusion 1; 33. Slot 1; 34. Protrusion 2; 35. Slot 2; 36. Inflation ring; 41. Inflation pipe; 42. Sealing ring one; 43. Screw one; 44. Sealing ring two; 45. Screw two; 46. Inlet pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-7 An adaptive sealing valve pressure testing machine includes a testing platform 5, on which a support frame 6 is fixedly mounted. Two clamping seats 1 are mounted on the support frame 6: one fixedly mounted and the other movably mounted. The two clamping seats 1 clamp the two ends of the valve respectively. A sealing plate 2 is fixedly mounted on the clamping seat 1 to seal both ends of the valve, thus facilitating valve pressure testing. The valve pressure testing machine also includes an operating platform 7 for controlling various parts of the machine.

[0019] Please see Figure 2 The sealing plate 2 is equipped with a sealing mechanism 3, which is used to provide a stable seal for valves of different models and sizes. Compared with sealing rings, it has better sealing applicability and does not require frequent replacement. Furthermore, the sealing pressure can be adjusted during valve pressure testing to adapt to valve pressure testing under different pressure conditions.

[0020] Please see Figure 3 and Figure 4The sealing mechanism 3 includes multiple sealing units 31, which are arranged in a ring array. The sealing units 31 are detachably installed on the sealing plate 2. The detachable method includes, but is not limited to, snap-fit ​​and magnetic connection, so that the sealing units 31 can be disassembled and replaced individually. This makes it more convenient to replace leaking or worn sealing units 31 individually in the future.

[0021] Please see Figure 5 The sealing unit 31 is composed of multiple interlocking circular rings, evenly distributed on the sealing plate 2. This allows for selective pressurization of the sealing unit 31 to adapt to valves of different models and sizes, and the sealing pressure is adjustable. It is important to note that the multiple sealing units 31 located on the same ring are connected to an inflation ring 36 via a piston block, with communication between the sealing unit 31 and the inflation ring 36. Specifically, the piston block is inserted into the inflation ring 36 and in close contact with it. The piston block has a hollow structure in the middle, ensuring communication between the sealing unit 31 and the inflation ring 36 without leakage. Furthermore, the detachable connection between the sealing unit 31 and the sealing plate 2 allows the sealing unit 31 to be fixed after installation on the sealing plate 2, ensuring a stable and leak-proof connection between the sealing unit 31 and the inflation ring 36 via the piston block. Furthermore, the sealing unit 31 can be inflated by the inflation ring 36, so that the air pressure of the sealing unit 31 corresponding to the inflation ring 36 can be adjusted, thereby adjusting the pressure of the sealing unit 31 on the valve.

[0022] Please see Figure 4 The sealing unit 31 includes a protrusion 32, which is located on one side of the sealing unit 31. A groove 33 is formed on the side of the sealing unit 31 away from the protrusion 32. The protrusion 32 and the groove 33 are fitted together. This ensures that adjacent sealing units 31 on the same ring are in a snap-fit ​​state, allowing for tight contact between adjacent sealing units 31 after inflation, achieving an interference fit, preventing air leakage, and enhancing sealing performance.

[0023] Please see Figure 4 A second protrusion 34 is provided on the side of the sealing unit 31 adjacent to the first protrusion 32, and a second groove 35 is provided on the side of the sealing unit 31 away from the second protrusion 34. The second protrusion 34 and the second groove 35 are adapted to each other. This ensures that the sealing units 31 on adjacent rings are also in a snap-fit ​​state. Therefore, after the sealing unit 31 is inflated, the sealing unit 31 and all adjacent sealing units 31 are in tight contact, achieving an interference fit and preventing air leakage from the gaps between the sealing units 31.

[0024] Please see Figure 6An inflation mechanism 4 is provided between the sealing unit 31 and the sealing plate 2. This mechanism controls the inflation amount of the sealing unit 31 and can control which sealing units 31 are inflated, facilitating the sealing of valves of different types and sizes.

[0025] Please see Figure 4 The inflation mechanism 4 includes an inflation pipe 41, which is fixedly connected to the inflation ring 36 via a pipe. Both the inflation pipe 41 and the inflation ring 36 are fixedly connected to the sealing plate 2, ensuring stable operation of the inflation pipe 41 and the inflation ring 36 without displacement or vibration. Furthermore, the inflation pipe 41 can be used to inflate and deflate the inflation ring 36, thereby adjusting its air pressure and controlling the air pressure of different sealing units 31.

[0026] Please see Figure 7 A sealing ring 42 is slidably installed inside the inflation tube 41, and a screw 43 is rotatably mounted on the sealing ring 42. The screw 43 is threadedly connected to the inflation tube 41. As the screw 43 rotates, its threaded connection with the inflation tube 41 allows it to move up and down along the tube. When the screw 43 stops rotating, the threaded connection provides self-locking. The displacement of the screw 43 causes the sealing ring 42 to move along the inflation tube 41. Therefore, the position of the sealing ring 42 within the inflation tube 41 can be controlled by the screw 43.

[0027] Please see Figure 7 A second sealing ring 44 is slidably installed inside the inflation tube 41, and a second screw 45 is rotatably mounted on the second sealing ring 44. The second screw 45 is threadedly connected to the inflation tube 41. The threaded connection between the second screw 45 and the inflation tube 41 allows the second screw 45 to move up and down along the inflation tube 41 when it rotates, and the threaded connection can self-lock when the second screw 45 stops rotating. When the second screw 45 moves, it will drive the second sealing ring 44 to move synchronously, thereby allowing the second screw 45 to adjust the position of the second sealing ring 44 in the inflation tube 41.

[0028] It is worth noting that an air inlet pipe 46 is fixedly connected to the second screw 45 and the second sealing ring 44. The air inlet pipe 46 is connected to an air pump, which can inflate the inflation pipe 41 through the air inlet pipe 46. Furthermore, because the air inlet pipe 46 passes through the second screw 45 and the second sealing ring 44, the air outlet of the air inlet pipe 46 is located in the space between the first sealing ring 42 and the second sealing ring 44 in the inflation pipe 41. This allows the inflation space within the inflation pipe 41 to be limited by controlling the positions of the first sealing ring 42 and the second sealing ring 44. Since the inflation pipe 41 is connected to multiple inflation rings 36, the inflation of a specific inflation ring 36 can be controlled by controlling the positions of the first sealing ring 42 and the second sealing ring 44.

[0029] An adaptive sealing valve pressure testing machine, the working principle of which is as follows: Rotating screw 43 and screw 45 adjusts the position of sealing ring 42 and sealing ring 44, thereby inflating the specific inflation ring 36.

[0030] The valve is clamped using clamping seat 1 and sealing plate 2, bringing the valve into contact with sealing unit 31. When the air pump operates, gas enters through inlet pipe 46 into the space formed by inflation pipe 41, sealing ring 42, and sealing ring 44, and then through inflation pipe 41 into inflation ring 36. Inflation ring 36 inflates sealing unit 31, causing it to expand and increasing the pressure between sealing unit 31 and the valve, thus sealing the valve. Furthermore, by controlling the air pressure, the static pressure between sealing unit 31 and the valve can be controlled, thereby controlling the sealing effect.

[0031] Because the sealing units 31 are arranged in multiple evenly distributed rings, and adjacent sealing units 31 are interlocked, the sealing units 31 are squeezed together during inflation, resulting in a large contact force. This prevents the sealing units 31 from leaking and becoming pressure relief points. Furthermore, the even distribution of the sealing units 31 allows for good adaptation to valves of different models and sizes. In addition, compared to sealing rings, the sealing unit 31 offers adjustable sealing performance and better applicability.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve pressure testing machine with adaptive sealing, comprising a testing platform (5), a support frame (6) fixedly mounted on the testing platform (5), a clamping seat (1) provided on the support frame (6), and a sealing plate (2) fixed on the clamping seat (1), characterized in that: A sealing mechanism (3) is provided on the sealing plate (2), the sealing mechanism (3) includes multiple sealing units (31), the multiple sealing units (31) are arranged in a ring array; an inflation mechanism (4) is provided between the sealing unit (31) and the sealing plate (2).

2. The adaptive sealing valve pressure testing machine according to claim 1, characterized in that: The sealing unit (31) includes a protrusion (32), which is located on one side of the sealing unit (31). A slot (33) is provided on the side of the sealing unit (31) away from the protrusion (32). The protrusion (32) and the slot (33) are compatible with each other.

3. The valve pressure testing machine for adaptive sealing according to claim 1, characterized in that: A second protrusion (34) is provided on the side of the sealing unit (31) adjacent to the first protrusion (32), and a second slot (35) is provided on the side of the sealing unit (31) away from the second protrusion (34). The second protrusion (34) and the second slot (35) are compatible with each other.

4. The valve pressure testing machine with adaptive sealing according to claim 1, characterized in that: The sealing unit (31) is detachably mounted on the sealing plate (2). The sealing unit (31) as a whole forms multiple ring structures that are in contact with each other. The multiple sealing units (31) located on the same ring are connected to an inflation ring (36) through a piston block. The sealing unit (31) and the inflation ring (36) are in communication.

5. A valve pressure testing machine for adaptive sealing according to claim 4, characterized in that: The inflation mechanism (4) includes an inflation pipe (41), which is fixedly connected to the inflation ring (36) via a pipe, and the inflation ring (36) is fixedly connected to the sealing plate (2).

6. A valve pressure testing machine for adaptive sealing according to claim 5, characterized in that: A sealing ring (42) is slidably installed inside the inflation tube (41), and a screw (43) is rotatably installed on the sealing ring (42). The screw (43) is threadedly connected to the inflation tube (41).

7. A valve pressure testing machine with adaptive sealing according to claim 5, characterized in that: A sealing ring 2 (44) is also slidably installed inside the inflation tube (41). A screw 2 (45) is rotatably installed on the sealing ring 2 (44). The screw 2 (45) is threadedly connected to the inflation tube (41). An air inlet tube (46) is fixedly connected through the screw 2 (45) and the sealing ring 2 (44).

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