Fire-fighting pipeline air tightness detection device

Abstract

The utility model discloses a fire-fighting pipeline air tightness detection device, and relates to the technical field of pipe fitting air tightness detection, in particular to a fire-fighting pipeline air tightness detection device, which comprises a pipe fitting, a working table, a driving part, a clamping part and a detection part, and is characterized in that the pipe fitting is placed on the working table; the second gear is driven by the motor to rotate, the clamping plate and the plugging plate are driven to act at the same time, and rapid clamping and plugging of the pipe fitting are achieved. Compared with the prior art, the two ends of the pipeline do not need to be operated respectively, the operation steps are greatly simplified, and the detection efficiency is improved. Specifically, after the motor is started, the second gear drives the two clamping plates and the two plugging plates to be close to the pipe fitting at the same time through cooperation of the annular groove and the supporting column. The clamping plate firstly makes contact with the pipe fitting and clamps and limits the pipe fitting, then the plugging plate continues to move to plug the two ends of the pipe fitting, the whole process is completed at a time, repeated manual adjustment is not needed, and the detection speed and convenience are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting air tightness testing technology, specifically a fire protection pipeline air tightness testing device. Background Technology

[0002] Fire protection piping components include pipe fittings (such as branch pipes, elbows, reducers, etc.) and valves (such as check valves, gate valves, solenoid valves, etc.). During the manufacturing process, fire protection pipe fittings or valves may sometimes develop defects such as shrinkage cavities and cracks. These defects can lead to poor airtightness of the castings during use, affecting performance and even causing accidents. Therefore, it is necessary to conduct airtightness testing on fire protection pipe fittings or valves before they leave the factory.

[0003] Existing airtightness testing devices, such as the one described in patent number 202321373689.3, disclose an automatic pipeline airtightness testing bench. This bench uses clamping components and sealing plates to fix and seal the pipeline, then injects gas into the pipeline using an air pump and detects pressure changes to determine the pipeline's airtightness. However, this device has some shortcomings in practical use. First, the combination of the clamping components and sealing plates is relatively complex, requiring operation at both ends of the pipeline separately, resulting in cumbersome steps and low testing efficiency. Second, when sealing the pipeline, the device lacks preliminary positioning and limiting measures for the pipeline, which may lead to inaccurate sealing and affect the accuracy of the test results. Therefore, a new type of fire protection pipeline airtightness testing device is needed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fire pipeline airtightness testing device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire pipeline airtightness testing device, comprising a pipe fitting, a workbench, a driving component, a clamping component, and a testing component. The pipe fitting is placed on the workbench. The driving component includes a motor and a second gear. The motor is embedded and fixedly mounted on the workbench, and the second gear is rotatably mounted on the workbench. The motor is driven by the second gear, which partially rotates the second gear. The clamping component includes two clamping plates, both mounted on the workbench and located on opposite sides of the pipe fitting. The second gear is driven by the two clamping plates, which move the clamping plates closer to or further away from each other. The testing component includes two sealing plates and an air pump. The two sealing plates are mounted on the workbench and located on the outer sides of both ends of the pipe fitting. The second gear is driven by the two sealing plates, which move the sealing plates closer to or further away from each other. When the two sealing plates move closer to each other, they seal the ends of the pipe fitting, creating a sealed cavity inside the pipe fitting. The gas outlet of the air pump communicates with the cavity inside the pipe fitting.

[0006] Optionally, the drive component further includes a first gear that meshes with a second gear.

[0007] Optionally, the second gear has four annular grooves penetrating its wall, and the four annular grooves are arranged in a circular array; the annular grooves are generally arc-shaped, with one end close to the center of the second gear and the other end far away from the center of the second gear.

[0008] Optionally, the worktable is provided with four sliding grooves, all of which are located below the second gear and correspond to four annular grooves respectively; one end of each sliding groove points to the center of the second gear; a sliding seat is slidably installed in each of the four sliding grooves of the worktable, and a support column is fixedly connected to the sliding seat. The support column passes through the annular groove and is slidably connected to the second gear through the annular groove.

[0009] Optionally, the two sealing plates are fixedly installed on the two support columns, and the upper ends of the other two support columns are fixedly installed with movable plates; an elastic element is fixedly connected to one side wall of the movable plate, and the end of the elastic element away from the movable plate is fixedly connected to the clamping plate.

[0010] Optionally, the detection component further includes a hose, a shut-off valve, and a pressure gauge. One end of the hose is fixedly installed and connected to the gas outlet of the air pump. The other end of the hose is fixedly installed to a sealing plate, and the hose passes through the sealing plate. The shut-off valve and the pressure gauge are both installed on the hose, with the pressure gauge closer to the side where the sealing plate is located.

[0011] This utility model has the following beneficial effects:

[0012] 1. This device uses a motor to drive the second gear to rotate, causing the clamping plates and sealing plates to move simultaneously, achieving rapid clamping and sealing of pipe fittings. Compared with existing technologies, it eliminates the need to operate on both ends of the pipe separately, greatly simplifying the operation and improving testing efficiency. Specifically, after the motor starts, the second gear, through the cooperation of the annular groove and the support column, drives the two clamping plates and two sealing plates to simultaneously approach the pipe fitting. The clamping plates first contact the pipe fitting and clamp and limit its position, then the sealing plates continue to move, sealing both ends of the pipe fitting. The entire process is completed in one go, without the need for multiple manual adjustments, significantly improving testing speed and convenience.

[0013] 2. When sealing pipelines, this device uses clamps to initially position and limit the pipe fittings, ensuring that the sealing plate accurately fits the pipe fitting port, thereby improving the accuracy and sealing performance. Furthermore, the contact surface between the sealing plate and the pipe fitting port is designed with sealing gaskets, further enhancing the sealing performance and ensuring no gas leakage during testing, making the test results more accurate and reliable. In actual testing, the clamps are connected to the moving plate via elastic elements, automatically adapting to the shape and size of the pipe fitting during clamping, ensuring uniform distribution of clamping force and avoiding deformation or damage to the pipe fitting due to improper clamping. During movement, the sealing plate maintains a stable trajectory through the sliding of the support column within the annular groove, ensuring sealed contact with the pipe fitting port, effectively preventing gas leakage and improving the accuracy and reliability of the test. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a fire pipeline airtightness testing device according to the present invention;

[0016] Figure 2 This is a cross-sectional view of the workbench in the fire pipeline airtightness testing device of this utility model;

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This is a three-dimensional structural diagram of the second gear in a fire pipeline airtightness testing device of this utility model;

[0019] Figure 5 This is a top view schematic diagram of the second gear in a fire pipeline airtightness testing device of this utility model.

[0020] In the diagram: 1. Workbench; 2. Motor; 3. First gear; 4. Second gear; 5. Annular groove; 6. Guide rod; 7. Sliding seat; 8. Support column; 9. Sealing plate; 10. Moving plate; 11. Elastic element; 12. Clamping plate; 13. Fixed platform; 14. Pipe fitting; 15. Sleeper; 16. Air pump; 17. Shut-off valve; 18. Pressure gauge; 19. Hoses. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0023] Please see Figures 1 to 5 The present invention provides a technical solution: a fire pipeline air tightness testing device, including a pipe fitting 14. The fire pipeline air tightness testing device also includes a workbench 1, a driving component, a clamping component, and a testing component. The pipe fitting 14 is placed on the workbench 1.

[0024] The driving component includes a motor 2 and a second gear 4. The motor 2 is embedded and fixedly mounted on the worktable 1, and the second gear 4 is rotatably mounted on the worktable 1. The motor 2 and the second gear 4 are connected in a transmission connection, and the motor 2 drives the second gear 4 to rotate partially. The driving component also includes a first gear 3, which meshes with the second gear 4.

[0025] In this system, after motor 2 starts, it drives the second gear 4 to rotate partially through the meshing of the first gear 3 and the second gear 4. Motor 2 may include, but is not limited to, a servo motor or a stepper motor. This transmission method not only enables precise motion control but also ensures the synchronous movement of the clamping and detection components, improving the overall coordination and stability of the device.

[0026] The clamping component includes two clamping plates 12, both of which are mounted on the worktable 1 and are located on both sides of the pipe fitting 14. The second gear 4 is connected to the two clamping plates 12 respectively, and drives the two clamping plates 12 to move closer or further away from each other.

[0027] The second gear 4, during partial rotation, drives the two clamping plates 12 to move closer or further apart. When the two clamping plates 12 move closer together, they clamp and fix the outer wall of the pipe fitting 14. When the two clamping plates 12 move further apart, they release the two pipe fittings 14.

[0028] The testing component includes two sealing plates 9 and an air pump 16. Both sealing plates 9 are mounted on the workbench 1, located on the outer sides of both ends of the pipe fitting 14. A second gear 4 is connected to both sealing plates 9, driving them to move closer or further apart. When the two sealing plates 9 move closer together, they seal both ends of the pipe fitting 14, creating a sealed cavity inside. The gas outlet of the air pump 16 communicates with this cavity.

[0029] The detection component is used to test the airtightness of the pipe fitting 14. Two sealing plates 9 are used to seal the two ends of the pipe fitting 14, so that the inside of the pipe fitting 14 forms a sealed cavity, and the air pump 16 pressurizes the inside of the pipe fitting 14 by injecting air.

[0030] Specifically, the second gear 4 has four annular grooves 5 penetrating its wall, arranged in a circular array. Each annular groove 5 is arc-shaped, with one end close to the center of the second gear 4 and the other end away from it. The worktable 1 has four sliding grooves, all located below the second gear 4 and corresponding to the four annular grooves 5. One end of each groove points towards the center of the second gear 4. Sliding seats 7 are slidably installed in each of the four sliding grooves of the worktable 1. Guide rods 6 are fixedly installed in each of the sliding grooves of the worktable 1, penetrating the sliding seats 7 and slidably connected to them. Support columns 8 are fixedly connected to the sliding seats 7, penetrating the annular grooves 5 and slidably connected to the second gear 4 via the annular grooves 5. More specifically, two sealing plates 9 are fixedly installed on two support columns 8, and movable plates 10 are fixedly installed on the upper ends of the other two support columns 8. An elastic element 11 is fixedly connected to one side wall of the movable plate 10, and the end of the elastic element 11 away from the movable plate 10 is fixedly connected to the clamping plate 12.

[0031] Two clamping plates 12 are connected to a movable plate 10 via elastic elements 11, and the movable plate 10 is fixed to the support column 8. When the second gear 4 rotates clockwise, the support column 8 slides within the annular groove 5. The rotation of the second gear 4 pushes the support column 8 to slide towards the center of the second gear 4, causing the support column 8 to move the clamping plates 12 closer to the pipe fitting 14, thus achieving clamping and limiting of the pipe fitting 14. This clamping method can automatically adapt to pipe fittings of different diameters, improving the versatility and flexibility of the device. The elastic element 11 includes, but is not limited to, a spring or a spring rod.

[0032] When the second gear 4 rotates clockwise, the support column 8 slides in the annular groove 5. The rotation of the second gear 4 pushes the support column 8 to slide towards the center of the second gear 4. The support column 8 drives the sealing plate 9 to move closer to the port of the pipe fitting 14, and the sealing plate 9 blocks and seals the port of the pipe fitting 14, so that the inside of the pipe fitting 14 forms a sealed cavity.

[0033] Specifically, the detection components also include a hose 19, a shut-off valve 17, and a pressure gauge 18. One end of the hose 19 is fixedly installed and connected to the gas outlet of the air pump 16, and the other end of the hose 19 is fixedly installed to a sealing plate 9, with the hose 19 passing through the sealing plate 9. The shut-off valve 17 and the pressure gauge 18 are both installed on the hose 19, with the pressure gauge 18 located closer to the side where the sealing plate 9 is located.

[0034] In this system, the gas outlet of the air pump 16 is connected to the sealing plate 9 via a hose 19, meaning the gas outlet of the air pump 16 is connected to the sealed cavity inside the pipe fitting 14 via the hose 19. During the testing process, the air pump 16 is started, and gas is injected into the pipe fitting 14 through the hose 19, recording the pressure gauge reading. After closing the shut-off valve 17, the change in the pressure gauge reading is observed after a period of time to determine whether the pipe fitting 14 is leaking. This testing method is not only simple to operate but also quickly and accurately detects the airtightness of the pipe fitting 14, improving testing efficiency and reliability. The hose 19 may include, but is not limited to, corrugated pipes.

[0035] More specifically, a sleeper 15 is fixedly installed on the workbench 1, and an air pump 16 is installed on the sleeper 15. A fixed platform 13 is fixedly installed on the workbench 1, and the fixed platform 13 is located inside the second gear 4, and the fixed platform 13 is rotatably connected to the second gear 4. The pipe fitting 14 is placed on the fixed platform 13. It should be noted that the second gear 4 in this technical solution does not refer to a conventional gear currently on the market, but rather to a disc-shaped structure with an overall shape similar to a gear. The second gear 4 can also be described as a rotating disc with multiple teeth along its outer periphery.

[0036] In use, place the pipe fitting 14 to be tested on the fixed platform 13 of the workbench 1. Start the motor 2. The motor 2, through the meshing of the first gear 3 and the second gear 4, drives the clamping plate 12 and the sealing plate 9 to move towards the pipe fitting 14 simultaneously. The clamping plate 12 first contacts the pipe fitting 14 and, through the action of the elastic element 11, achieves clamping and limiting, ensuring that the pipe fitting 14 remains stable during the testing process. The sealing plate 9 continues to move, sealing both ends of the pipe fitting 14, forming a sealed cavity inside the pipe fitting 14. Start the air pump 16 and inject gas into the pipe fitting 14 through the hose 19, recording the initial value of the pressure gauge 18. Close the shut-off valve 17, and after a period of time, observe the value of the pressure gauge 18 again. If the value remains unchanged, it indicates that the pipe fitting 14 has good airtightness; if the value decreases, it indicates that the pipe fitting 14 has an air leakage. After the test is completed, open the shut-off valve 17 to release the gas in the pipe fitting 14, then start the motor 2 to reset the clamp plate 12 and the sealing plate 9, remove the pipe fitting 14, and complete the test process.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for testing the air tightness of a fire fighting line comprising a pipe element (14), characterized in that: It also includes a workbench (1), a drive component, a clamping component, and a detection component. The pipe fitting (14) is placed on the workbench (1). The drive component includes a motor (2) and a second gear (4). The motor (2) is embedded and fixedly installed on the workbench (1). The second gear (4) is rotatably installed on the workbench (1). The motor (2) and the second gear (4) are connected in a transmission. The motor (2) drives the second gear (4) to rotate partially. The clamping component includes two clamping plates (12), both clamping plates (12) are mounted on the workbench (1), and the two clamping plates (12) are located on both sides of the pipe fitting (14). The second gear (4) is connected to the two clamping plates (12) respectively, and the second gear (4) drives the two clamping plates (12) to move closer to or further away from each other. The detection component includes two sealing plates (9) and an air pump (16). The two sealing plates (9) are installed on the workbench (1) and are located on the outer sides of both ends of the pipe fitting (14). The second gear (4) is connected to the two sealing plates (9) respectively. The second gear (4) drives the two sealing plates (9) to move closer or further away from each other. When the two sealing plates (9) move closer to each other, they block the two ends of the pipe fitting (14), forming a sealed cavity inside the pipe fitting (14). The gas outlet of the air pump (16) is connected to the cavity inside the pipe fitting (14).

2. The device for detecting the air tightness of a fire hose according to claim 1, characterized in that: The drive component also includes a first gear (3), which meshes with a second gear (4).

3. The device for detecting the air tightness of a fire hose according to claim 1, characterized in that: The second gear (4) has four annular grooves (5) that penetrate its wall, and the four annular grooves (5) are arranged in a ring array. The annular grooves (5) are arc-shaped in general, and one end of the annular groove (5) is close to the center of the second gear (4), while the other end of the annular groove (5) is far away from the center of the second gear (4).

4. The device for detecting the air tightness of a fire hose according to claim 3, characterized in that: The workbench (1) is provided with four sliding grooves, all of which are located below the second gear (4) and correspond to four annular grooves (5) respectively. One end of each sliding groove points to the center of the second gear (4). Each of the four sliding grooves of the workbench (1) is slidably installed with a sliding seat (7), and a support column (8) is fixedly connected to the sliding seat (7). The support column (8) passes through the annular groove (5) and is slidably connected to the second gear (4) through the annular groove (5).

5. The fire pipeline airtightness testing device according to claim 4, characterized in that: Two sealing plates (9) are fixedly installed on two support columns (8), and two other support columns (8) are fixedly installed with movable plates (10) at their upper ends; an elastic element (11) is fixedly connected to one side wall of the movable plate (10), and the end of the elastic element (11) away from the movable plate (10) is fixedly connected to the clamping plate (12).

6. The device for detecting air tightness of fire-fighting pipeline according to claim 1, characterized in that: The detection component also includes a hose (19), a shut-off valve (17), and a pressure gauge (18). One end of the hose (19) is fixedly installed and connected to the gas outlet of the air pump (16). The other end of the hose (19) is fixedly installed to a sealing plate (9), and the hose (19) passes through the sealing plate (9). The shut-off valve (17) and the pressure gauge (18) are both installed on the hose (19), and the pressure gauge (18) is close to the side where the sealing plate (9) is located.

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