A three-piece high platform ball valve life test device

Abstract

The utility model provides a three -piece formula high platform ball valve life test device belongs to ball valve test technical field to solve the existing three -piece formula high platform ball valve life test device, long -term complex working condition under the sealing gas cushion easy failure: slight leakage is difficult to detect and causes data distortion, and the sudden strong leakage is medium spatter, pollutes the environment, and the safe hidden danger still can interrupt the test and influence the problem of data integrity. Including test machine main part, fixed frame body, pneumatic push rod, clamping disc, sealing assembly and warning assembly, the fixed frame body is fixedly installed in the inside of test pool, the pneumatic push rod is fixedly installed in fixed frame body right side, the clamping disc is provided with two groups, a group clamping disc fixedly installed in the inboard of side edge board, another group clamping disc fixedly installed in the top of pneumatic push rod, sealing assembly sets up in fixed frame body upper portion, warning assembly sets up in fixed frame body upper portion. The utility model has reliable sealing, detection stable, emergency treatment and the like advantages.

Description

Technical Field

[0001] This utility model belongs to the field of ball valve testing technology, and more specifically, it relates to a three-piece high-platform ball valve life testing device. Background Technology

[0002] The three-piece high-platform ball valve consists of a left body, a right body, and a middle body connected by bolts. Its high-platform structure facilitates actuator installation and it is widely used for fluid shut-off and regulation in industrial pipelines. Its service life directly affects the operational safety and economy of industrial pipeline systems; therefore, life testing of the three-piece high-platform ball valve is crucial. Existing life testing equipment for three-piece high-platform ball valves mainly consists of a fixed clamping mechanism, a fluid medium and operating condition simulation system, and a performance parameter monitoring system. During testing, a pneumatic clamp with a sealing gasket is used to clamp and seal both ends of the ball valve to ensure the sealing of the test environment. Subsequently, the fluid medium and operating condition simulation system is connected to the inlet and outlet of the ball valve under test through pipelines, providing the ball valve with a fluid medium that simulates actual operating conditions, accurately replicating the medium conditions in real-world applications. Simultaneously, the performance parameter monitoring system is connected to both the ball valve under test and the fluid medium and operating condition simulation system, monitoring various performance parameters of the ball valve in real time during the test, providing comprehensive data support for ball valve life assessment.

[0003] Existing application number CN202222219592.9, this utility model relates to a high-frequency valve testing device, specifically a high-frequency testing machine, including a pressure gas tank, a first pneumatic ball valve, a high-frequency ball valve, a storage tank, and a second pneumatic ball valve. The pressure gas tank is connected to the inlet end of the high-frequency ball valve through the first pneumatic ball valve, filling the high-frequency ball valve with high-pressure gas. The storage tank is connected to the inlet end of the high-frequency ball valve through the second pneumatic ball valve, filling the high-frequency ball valve with particulate media. The outlet end of the high-frequency ball valve is connected to the storage tank, forming a circulation. When the first pneumatic ball valve is open, the second pneumatic ball valve is closed; when the second pneumatic ball valve is open, the first pneumatic ball valve is closed. Compared with the prior art, this utility model performs simulated working condition tests on the high-frequency ball valve, realizing the fatigue life test of the high-frequency ball valve.

[0004] Based on the above, existing three-piece high-platform ball valve life testing devices mostly use pneumatic clamps wrapped with sealing gaskets to fix and seal both ends of the ball valve in the clamping and sealing stage. Since life testing needs to simulate complex operating conditions such as high pressure, high temperature, and low temperature, and requires long-term continuous operation to verify product durability, the sealing gasket is prone to sealing failure during long-term testing. If a slight leak occurs, it is not only difficult to detect in real time, but it can also lead to problems such as medium pressure fluctuations and inaccurate leakage monitoring, directly affecting the accuracy of the test data. If a sudden high-intensity leak occurs, especially under high pressure and high temperature conditions, the leaking medium may rapidly splash and spread, easily causing environmental pollution in the test area and posing safety hazards such as burns and media contact injuries to personnel. It can also lead to test interruption, seriously affecting the integrity of the overall test data. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a three-piece high-platform ball valve life testing device. This addresses the shortcomings of existing three-piece high-platform ball valve life testing devices, which often use pneumatic clamps encasing sealing gaskets to fix and seal both ends of the ball valve during the clamping and sealing process. Since life testing requires simulating complex operating conditions such as high pressure, high temperature, and low temperature, and necessitates long-term continuous operation to verify product durability, the sealing gaskets are prone to sealing failure during long-term testing. Even minor leaks are difficult to detect in real time and can lead to fluctuations in medium pressure and distortion of leakage monitoring, directly affecting the accuracy of test data. Sudden, high-intensity leaks, especially under high pressure and high temperature conditions, can cause rapid splashing and diffusion of the leaking medium, easily polluting the test area and posing safety hazards such as burns and contact injuries. Furthermore, it can lead to test interruptions, severely impacting the integrity of the overall test data.

[0006] The purpose and effectiveness of this utility model, a three-piece high-platform ball valve life testing device, are achieved through the following specific technical means: A three-piece high-platform ball valve life testing device includes a testing machine body, a testing pool, a fixed frame, a side plate, a pneumatic push rod, a clamping plate, a sealing assembly, and a warning assembly. The testing pool is fixedly installed on the top of the testing machine body; the fixed frame is fixedly installed inside the testing pool; the side plate is fixedly installed on the left side of the fixed frame; the pneumatic push rod is fixedly installed on the right side of the fixed frame; two sets of clamping plates are provided, one set of clamping plates is fixedly installed on the inside of the side plate, and the other set of clamping plates is fixedly installed on the top of the pneumatic push rod; the sealing assembly is located on the upper part of the fixed frame; and the warning assembly is located on the upper part of the fixed frame.

[0007] Furthermore, the sealing assembly includes: a pipe interface, a transmission disc, and a connecting pipe. Two sets of pipe interfaces are provided, each fixedly connected to the end of one of the two sets of clamping discs. Two sets of transmission discs are provided, each slidingly connected horizontally inside one of the two sets of clamping discs. Two sets of connecting pipes are provided, each slidingly connected inside one of the two sets of clamping discs, and each fixedly installed on the outside of one of the two sets of transmission discs.

[0008] Furthermore, the sealing assembly also includes: a sealing gasket and a through hole. The sealing gasket is provided in two sets, and the two sets of sealing gaskets are respectively fixedly installed inside the two sets of transmission discs. The through hole is provided in two sets, and the two sets of through holes are respectively opened inside the two sets of sealing gaskets. The two sets of through holes are respectively connected to the two sets of connecting pipes.

[0009] Furthermore, the sealing assembly also includes: a second rack and an elastic element, wherein the second rack is provided in eight sets, and every four sets of the second rack are arranged in a circumferential array on the back of a set of transmission discs; the elastic element is provided in eight sets, and the eight sets of the elastic element are fixedly connected to the ends of the eight sets of second racks.

[0010] Furthermore, the sealing assembly also includes: a first rack and a drive gear, wherein the first rack is provided in eight sets, and every four sets of the first rack are slidably connected inside a set of clamping discs; the drive gear is provided in eight sets, and every four sets of the drive gear are rotatably connected inside a set of clamping discs, and the drive gear meshes with the first rack and the second rack respectively.

[0011] Furthermore, the sealing assembly also includes: a transmission ring and a transmission rod. The transmission ring is provided in two sets, and the two sets of transmission rings are slidably connected inside the two sets of clamping discs respectively. The transmission rod is provided in eight sets, with every four sets of transmission rods fixedly connected to the back of a set of transmission rings, and the eight sets of transmission rods fixedly installed on the top of the eight sets of first racks.

[0012] Furthermore, the sealing assembly also includes: a sealing groove and a sealing ring. The sealing groove is provided in two sets, and the two sets of sealing grooves are respectively opened inside the two sets of clamping discs. The sealing ring is provided in two sets, and the two sets of sealing rings are respectively fixedly connected inside the two sets of sealing grooves.

[0013] Furthermore, the warning component includes a pressure sensor and a pressure relief valve. The pressure sensor is provided in two sets, and the two sets of pressure sensors are respectively fixedly installed inside the two sets of clamping plates. The pressure relief valve is provided in two sets, and the two sets of pressure relief valves are respectively fixedly installed obliquely downward on the outside of the two sets of clamping plates.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Firstly, this invention features a sealing assembly that enhances test sealing performance through a double-sealing structure. During clamping, the sealing gasket first adheres to the ball valve interface to form the first seal. The reaction force pushes the transmission disc to slide, and through rack and gear transmission, the transmission ring squeezes the sealing ring within the sealing groove, forming a surrounding second seal. This double protection effectively limits leakage media, prevents direct splashing of high-pressure and high-temperature media, solves the problem of traditional sealing gaskets failing easily after long-term use, and ensures the accuracy of test data.

[0015] Secondly, this invention features a warning component that uses a pressure sensor to monitor pressure changes in the sealed space in real time, with the data synchronously transmitted to the control mechanism for intuitive display. When the pressure is within the safe threshold, the test continues; if the pressure exceeds the limit, it automatically triggers a shutdown and activates the pressure relief valve for rapid pressure release, preventing equipment damage and personnel risks. At the end of the test or during maintenance, the pressure relief operation also provides a safe condition for removing the ball valve, forming a comprehensive safety guarantee throughout the entire process.

[0016] This invention has the advantages of reliable sealing, stable detection, and emergency handling, which improves the sealing reliability under long-term complex working conditions, and realizes real-time monitoring and emergency handling of leakage, ensuring the stability and continuity of the life test process and reducing safety hazards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the fixed frame structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the clamping disc structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the sealing groove structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the transmission disc structure of this utility model.

[0022] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Main body of the testing machine; 2. Test pool; 3. Fixing frame; 4. Side plate; 5. Pneumatic push rod; 6. Clamping plate; 601. Pipe interface; 602. Transmission plate; 6021. Connecting pipe; 6022. Sealing gasket; 6023. Through hole; 603. Transmission ring; 6031. Transmission rod; 6032. First rack; 6033. Drive gear; 6034. Second rack; 6035. Elastic element; 604. Sealing groove; 605. Sealing ring; 606. Pressure sensor; 607. Pressure relief valve. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] Example 1: As attached Figure 1 To be continued Figure 5 As shown: This utility model provides a three-piece high-platform ball valve life testing device, including a testing machine body 1, a testing pool 2, a fixed frame 3, a side plate 4, a pneumatic push rod 5, a clamping plate 6, and a sealing assembly. The testing pool 2 is fixedly installed on the top of the testing machine body 1; the fixed frame 3 is fixedly installed inside the testing pool 2; the side plate 4 is fixedly installed on the left side of the fixed frame 3; the pneumatic push rod 5 is fixedly installed on the right side of the fixed frame 3; two sets of clamping plates 6 are provided, one set of clamping plates 6 is fixedly installed on the inside of the side plate 4, and the other set of clamping plates 6 is fixedly installed on the top of the pneumatic push rod 5; the sealing assembly is located on the upper part of the fixed frame 3.

[0025] The sealing assembly includes: a pipe interface 601, a transmission disc 602, and a connecting pipe 6021. Two sets of pipe interfaces 601 are provided, and the two sets of pipe interfaces 601 are respectively fixedly connected to the ends of two sets of clamping discs 6. Two sets of transmission discs 602 are provided, and the two sets of transmission discs 602 are respectively slidably connected in the horizontal direction inside the two sets of clamping discs 6. Two sets of connecting pipes 6021 are provided, and the two sets of connecting pipes 6021 are respectively slidably connected inside the two sets of clamping discs 6. The two sets of connecting pipes 6021 are respectively fixedly installed on the outside of the two sets of transmission discs 602.

[0026] The sealing assembly also includes: a sealing gasket 6022 and a through hole 6023. Two sets of sealing gaskets 6022 are provided, and the two sets of sealing gaskets 6022 are fixedly installed on the inner side of the two sets of transmission discs 602 respectively. Two sets of through holes 6023 are provided, and the two sets of through holes 6023 are respectively opened inside the two sets of sealing gaskets 6022. The two sets of through holes 6023 are respectively connected to the two sets of connecting pipes 6021.

[0027] The sealing assembly also includes: a second rack 6034 and an elastic element 6035. The second rack 6034 is provided in eight sets, with four sets of the second rack 6034 arranged in a circumferential array on the back of a set of transmission discs 602. The elastic element 6035 is provided in eight sets, with the eight sets of elastic elements 6035 fixedly connected to the ends of the eight sets of second rack 6034.

[0028] The sealing assembly further includes: a first rack 6032 and a drive gear 6033. The first rack 6032 is provided in eight sets, and every four sets of the first rack 6032 are slidably connected inside a set of clamping discs 6. The drive gear 6033 is provided in eight sets, and every four sets of the drive gear 6033 are rotatably connected inside a set of clamping discs 6. The drive gear 6033 meshes with the first rack 6032 and the second rack 6034 respectively.

[0029] The sealing assembly also includes: a transmission ring 603 and a transmission rod 6031. There are two sets of transmission rings 603, which are slidably connected inside the two sets of clamping discs 6. There are eight sets of transmission rods 6031, with four sets of transmission rods 6031 fixedly connected to the back of one set of transmission rings 603. The eight sets of transmission rods 6031 are fixedly installed on the top of the eight sets of first racks 6032.

[0030] The sealing assembly also includes: a sealing groove 604 and a sealing ring 605. Two sets of sealing grooves 604 are provided, and the two sets of sealing grooves 604 are respectively opened inside the two sets of clamping discs 6. Two sets of sealing rings 605 are provided, and the two sets of sealing rings 605 are respectively fixedly connected inside the two sets of sealing grooves 604.

[0031] The specific usage and function of this embodiment are as follows: When conducting life tests on a three-piece high-platform ball valve, the ball valve to be tested is first precisely placed in a preset position between two sets of clamping discs 6. The pneumatic push rod 5 is activated, and its output end pushes the right clamping disc 6 to the left, working in conjunction with the left clamping disc 6 fixed to the side plate 4 to clamp and fix the ball valve. During clamping, the sealing gaskets 6022 on the inner sides of the two sets of clamping discs 6 first tightly adhere to the interfaces at both ends of the ball valve, forming the first line of sealing.

[0032] As the clamping force continues to act, the ball valve, under the reaction force, pushes the sealing gasket 6022 and the transmission disc 602 to slide horizontally along the inside of the clamping disc 6. Simultaneously, it drives the second rack 6034 on the back of the transmission disc 602 to move inward toward the clamping disc 6 and compress the elastic element 6035. Through the meshing transmission between the second rack 6034 and the drive gear 6033, the drive gear 6033 drives the first rack 6032 to move in the opposite direction, which in turn pushes the transmission ring 603 along the clamping disc 6 axially into the sealing groove 604 via the transmission rod 6031. At this time, the sealing ring 605 in the sealing groove 604 is elastically deformed by the compression of the transmission ring 603, and tightly fits between the outer side of the ball valve interface and the inner wall of the clamping disc 6, forming a surrounding second-layer sealing structure. The double sealing design significantly improves the sealing reliability of the clamping part.

[0033] The clamping disc 6 is connected to the fluid medium and operating condition simulation system of the testing machine body 1 through the pipe interface 601. The connecting pipe 6021 is flexibly connected to the pipe interface 601 through a hose or corrugated pipe, which can adapt to the position changes of the transmission disc 602 during the sliding process. After the ball valve completes clamping and positioning, the through hole 6023 in the sealing gasket 6022 is connected to the inlet and outlet of the ball valve. The fluid medium system passes through the pipe interface 601, the connecting pipe 6021 and the through hole 6023 in sequence, enters the ball valve, and then passes through the other through hole 6023, the other connecting pipe 6021 and the other pipe interface 601, and finally returns to the fluid medium system, ensuring the continuity of the medium operating condition simulation.

[0034] During testing, if a minor leak occurs in the first sealing gasket 6022, the medium will be confined within the enclosed space inside the clamping disc 6, preventing direct leakage from affecting the testing environment. Even in the event of a sudden leak, the second sealing ring 605 can quickly block the medium diffusion path. Combined with the enveloping structure of the clamping disc 6 on the ball valve interface, it effectively prevents high-pressure and high-temperature medium from splashing, reducing safety hazards. At the same time, it reduces the interference of leakage on the continuity of test data, ensuring the stability and safety of the life test process.

[0035] Example 2: Based on Example 1, such as Figures 1 to 5 As shown, it also includes: a warning component, which is installed on the upper part of the fixed frame 3.

[0036] The warning components include: a pressure sensor 606 and a pressure relief valve 607. Two sets of pressure sensors 606 are provided, and the two sets of pressure sensors 606 are fixedly installed inside the two sets of clamping discs 6 respectively. Two sets of pressure relief valves 607 are provided, and the two sets of pressure relief valves 607 are fixedly installed diagonally downward on the outside of the two sets of clamping discs 6 respectively.

[0037] The specific usage and function of this embodiment are as follows: During testing, the warning and sealing components work together to form a dynamic safety protection mechanism. When the sealing gasket 6022 of the first sealing line leaks, the leaking medium is confined to a closed space formed by the inner wall of the clamping disc 6 and the sealing ring 605. As the leakage accumulates, the pressure in this space gradually increases. At this time, two sets of pressure sensors 606 monitor the pressure changes in the sealed space in real time and transmit the monitoring data to the display and control mechanism of the main body 1 of the testing machine. The pressure value and the trend of change are presented intuitively through a visual interface, which makes it easy for operators to monitor the sealing status in real time.

[0038] If the monitored pressure value is within the preset safety threshold range, it indicates that the sealing ring 605 of the second sealing line can still effectively prevent media leakage. The system will maintain the normal test process to ensure that the continuity of the life test is not affected by minor leaks. When the pressure value exceeds the maximum safety threshold, it indicates that the sealing effect of the sealing ring 605 can no longer meet the requirements, and there is a risk of media leakage. At this time, the control system of the main body 1 of the test machine will immediately trigger the safety protection program: automatically shut down the entire test cycle, and simultaneously activate two sets of pressure relief valves 607 to quickly release the pressure in the sealed space to the test pool 2 through the downward-sloping exhaust and drainage channels, avoiding damage to equipment or personnel by high-pressure media and creating safe conditions for subsequent maintenance operations.

[0039] In addition, when the test is completed or the ball valve needs to be removed for maintenance, regardless of whether a leak has occurred, the control mechanism of the main body 1 of the test machine must be operated to open the pressure relief valve 607 first. After the pressure in the sealed space is completely released to a safe value, the pneumatic push rod 5 is controlled to move in the opposite direction to open the clamping plate 6 before the ball valve can be removed.

[0040] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0041] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0042] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A three-piece high-platform ball valve life testing device, characterized in that: The three-piece high-platform ball valve life testing device includes a testing machine body (1), a testing pool (2), a fixed frame (3), a side plate (4), a pneumatic push rod (5), a clamping plate (6), a sealing component, and a warning component. The testing pool (2) is fixedly installed on the top of the testing machine body (1); the fixed frame (3) is fixedly installed inside the testing pool (2); the side plate (4) is fixedly installed on the left side of the fixed frame (3); the pneumatic push rod (5) is fixedly installed on the right side of the fixed frame (3); the clamping plate (6) is provided in two sets, one set of the clamping plate (6) is fixedly installed on the inside of the side plate (4), and the other set of the clamping plate (6) is fixedly installed on the top of the pneumatic push rod (5); the sealing component is located on the upper part of the fixed frame (3); and the warning component is located on the upper part of the fixed frame (3).

2. The three-piece high-platform ball valve life testing device as described in claim 1, characterized in that: The sealing assembly includes: a pipe interface (601), a transmission disc (602), and a connecting pipe (6021). The pipe interface (601) is provided in two sets, and the two sets of pipe interfaces (601) are respectively fixedly connected to the ends of the two sets of clamping discs (6). The transmission disc (602) is provided in two sets, and the two sets of transmission discs (602) are respectively slidably connected in the horizontal direction inside the two sets of clamping discs (6). The connecting pipe (6021) is provided in two sets, and the two sets of connecting pipes (6021) are respectively slidably connected inside the two sets of clamping discs (6). The two sets of connecting pipes (6021) are respectively fixedly installed on the outside of the two sets of transmission discs (602).

3. The three-piece high-platform ball valve life testing device as described in claim 2, characterized in that: The sealing assembly further includes: a sealing gasket (6022) and a through hole (6023). Two sets of sealing gaskets (6022) are provided, and the two sets of sealing gaskets (6022) are respectively fixedly installed inside the two sets of transmission discs (602). Two sets of through holes (6023) are provided, and the two sets of through holes (6023) are respectively opened inside the two sets of sealing gaskets (6022). The two sets of through holes (6023) are respectively connected to the two sets of connecting pipes (6021).

4. The three-piece high-platform ball valve life testing device as described in claim 2, characterized in that: The sealing assembly further includes: a second rack (6034) and an elastic element (6035), wherein the second rack (6034) is provided in eight groups, and every four groups of the second rack (6034) are arranged in a circumferential array on the back of a set of transmission discs (602); the elastic element (6035) is provided in eight groups, and the eight groups of the elastic element (6035) are fixedly connected to the ends of the eight groups of second racks (6034).

5. The three-piece high-platform ball valve life testing device as described in claim 2, characterized in that: The sealing assembly further includes: a first rack (6032) and a drive gear (6033). The first rack (6032) is provided in eight sets, and every four sets of the first rack (6032) are slidably connected inside a set of clamping discs (6). The drive gear (6033) is provided in eight sets, and every four sets of the drive gear (6033) are rotatably connected inside a set of clamping discs (6). The drive gear (6033) meshes with the first rack (6032) and the second rack (6034) respectively.

6. The three-piece high-platform ball valve life testing device as described in claim 2, characterized in that: The sealing assembly further includes: a transmission ring (603) and a transmission rod (6031). The transmission ring (603) is provided in two sets, and the two sets of transmission rings (603) are slidably connected inside the two sets of clamping discs (6). The transmission rod (6031) is provided in eight sets, and every four sets of transmission rods (6031) are fixedly connected to the back of a set of transmission rings (603). The eight sets of transmission rods (6031) are fixedly installed on the top of the eight sets of first racks (6032).

7. The three-piece high-platform ball valve life testing device as described in claim 2, characterized in that: The sealing assembly further includes: a sealing groove (604) and a sealing ring (605). The sealing groove (604) is provided in two sets, and the two sets of sealing grooves (604) are respectively opened inside the two sets of clamping discs (6). The sealing ring (605) is provided in two sets, and the two sets of sealing rings (605) are respectively fixedly connected inside the two sets of sealing grooves (604).

8. The three-piece high-platform ball valve life testing device as described in claim 1, characterized in that: The warning component includes a pressure sensor (606) and a pressure relief valve (607). The pressure sensor (606) is provided in two sets, and the two sets of pressure sensors (606) are respectively fixedly installed inside the two sets of clamping plates (6). The pressure relief valve (607) is provided in two sets, and the two sets of pressure relief valves (607) are respectively fixedly installed diagonally downward on the outside of the two sets of clamping plates (6).

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