Leakage detection device for gas flow meter

Abstract

The utility model discloses a leakage detection device for a gas flowmeter, and relates to the technical field of gas flowmeters. According to the utility model, a plurality of feathers are installed inside a leakage detection box, three hydraulic cylinders I used for moving the feathers are installed on the inner wall surface of the leakage detection box, the output ends of the hydraulic cylinders I are provided with dismounting parts used for connecting the feathers, a supporting plate is arranged inside a through hole, and three groups of clamping parts used for fixing a gas flowmeter are arranged on the supporting plate. By moving the feathers to the outer side of the sealing part of the gas flow meter, whether the feathers float or not when the gas pump inflates the gas flow meter can be observed, so that the sealing performance of the gas flow meter can be judged, compared with the situation that the device is soaked in water for detection, the device is effectively prevented from being corroded by water stains, and the service life of the device is prolonged. The stability of the whole device in the detection process is guaranteed, the accuracy and credibility of detection data are guaranteed, and meanwhile the service life of the device is also guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas flow meters, in particular to a leakage detection device for a gas flow meter. Background Art

[0002] Gas flow meter is an instrument for measuring gas flow. It is installed in the pipeline to record the amount of gas flowing through. It can measure coal gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine, fuel gas, biogas, carbon dioxide, oxygen, compressed air, argon, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia, etc.

[0003] At present, after the gas flow meter is produced, its sealing needs to be tested. When conducting a leak test, the existing gas flow meter generally adopts the method of inflating the inside of the gas flow meter, applying foam water on the outer surface, and observing whether bubbles are produced on the surface, or immersing the gas flow meter in water to observe whether bubbles are generated in the water. However, during operation, the leak detection device needs to be immersed in water (foam water) for a long time, which not only easily causes the leak detection device to be corroded by water stains and reduces the service life of the device, but also affects the stability of the device during use, reducing the accuracy and credibility of the leak detection result.

[0004] For this reason, a leak detection device for a gas flow meter is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and provide a leakage detection device for a gas flow meter.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A leak detection device for a gas flow meter comprises a leak detection box and a bracket installed at the bottom of the leak detection box, wherein a through hole is provided on the floor of the leak detection box, a plurality of feathers are installed inside the leak detection box, three hydraulic cylinders 1 for moving the feathers are installed on the inner wall of the leak detection box, a disassembly and assembly part for connecting the feathers is provided at the output end of the hydraulic cylinder 1, a support plate is provided inside the through hole, three groups of clamping parts for fixing the gas flow meter are provided on the support plate, a hydraulic cylinder 2 is installed on the bracket, a rubber pad for supporting the support plate is connected to the output end of the hydraulic cylinder 2, an air pump is installed on the rubber pad, and four support rods are connected to the top of the rubber pad and the bottom of the support plate.

[0008] Furthermore, the clamping portion includes an installation cavity, the upper surface of the support plate is provided with three circumferentially distributed installation cavities, a screw is rotatably connected inside the installation cavity, a clamping plate is installed on the outer wall of the screw, and a motor for rotating the screw is installed inside the installation cavity.

[0009] Furthermore, a pad made of flexible plastic or soft rubber material is bonded to a wall surface of the clamping plate on one side facing the gas flow meter.

[0010] Furthermore, inverted "L"-shaped stabilizing blocks are mortised on both sides of the clamping plate, and a sliding groove for the stabilizing blocks to slide is provided on the upper surface of the supporting plate.

[0011] Furthermore, the disassembly and assembly part includes a top plate, the output ends of the three hydraulic cylinders are connected to the top plate, a fixing ring connected to the upper end of the feather is installed at the bottom of the top plate, three circumferentially distributed hanging rings are welded to the top of the fixing ring, three movable grooves are opened at the bottom of the top plate, a slider is slidably connected inside the movable groove, and a hook for hooking the hanging ring is connected to the bottom of the slider.

[0012] Furthermore, the connection between the slider and the hook is a threaded connection.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model moves the feather to the outside of the sealing part of the gas flow meter, and can observe whether the feather flutters when the air pump inflates the gas flow meter, so as to judge the sealing performance of the gas flow meter. Compared with immersing the device in water for detection, the utility model effectively avoids the corrosion of the device by water stains, ensures the stability of the entire device during the detection process, ensures the accuracy and credibility of the detection data, and also ensures the service life of the device; the clamping part can be used to clamp and fix the gas flow meter placed on the support plate, ensure the stability of the gas flow meter during the detection process, avoid the gas flow meter from shaking or even falling due to external force collision during detection, and ensure the normal development of the detection work and the credibility of the detection data; the disassembly and assembly part is provided to facilitate the disassembly and replacement of multiple feathers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an enlarged schematic diagram of the feather structure of the utility model;

[0016] Figure 2 It is a front perspective schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is an enlarged schematic diagram of the clamping part structure of the utility model;

[0018] Figure 4 This is an exploded schematic diagram of the disassembly and assembly structure of the utility model;

[0019] Figure numerals: 1. leak detection box; 2. bracket; 3. hydraulic cylinder one; 5. feather; 6. disassembly and assembly part; 601. top plate; 602. fixing ring; 603. hanging ring; 604. movable groove; 605. slider; 606. hook; 7. through hole; 8. rubber pad; 9. hydraulic cylinder two; 10. support rod; 11. support plate; 12. air pump; 13. clamping part; 1301. installation cavity; 1302. screw; 1303. clamping plate; 1304. motor; 1305. pad; 1306. slide groove; 1307. stabilizing block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figures 1 to 4As shown, a leak detection device for a gas flow meter comprises a leak detection box 1 and a bracket 2 installed at the bottom of the leak detection box 1, wherein a through hole 7 is provided on the ground of the leak detection box 1, a plurality of circumferentially distributed feathers 5 are installed inside the leak detection box 1, and the plurality of feathers 5 form an annular encirclement, and three circumferentially distributed hydraulic cylinders 3 for moving the feathers 5 are installed on the inner wall of the leak detection box 1, and a disassembly and assembly portion 6 for connecting the feathers 5 is provided at the output end of the hydraulic cylinder 3, a support plate 11 is provided inside the through hole 7, and three groups of clamping portions 13 for fixing the gas flow meter are provided on the support plate 11, a hydraulic cylinder 2 9 is installed on the bracket 2, and a rubber pad 8 for supporting the support plate 11 is connected to the output end of the hydraulic cylinder 2 9, and an air pump 12 is installed on the rubber pad 8, and four circumferentially distributed support rods 10 are connected to the top of the rubber pad 8 and the bottom of the support plate 11, and the inner diameter of the through hole 7 is smaller than the outer diameter of the rubber pad 8, and the rubber pad 8 is made of soft rubber material, and the leak detection box 1 is made of transparent material;

[0025] Specifically, by moving the feather 5 to the outside of the sealing part of the gas flow meter, it is possible to observe whether the feather 5 flutters when the air pump 12 inflates the inside of the gas flow meter, thereby judging the sealing of the gas flow meter. Compared with immersing the device in water for detection, it effectively avoids the device from being corroded by water stains, ensures the stability of the entire device during the detection process, ensures the accuracy and credibility of the detection data, and also ensures the service life of the device; the clamping part 13 provided can clamp and fix the gas flow meter placed on the support plate 11, ensures the stability of the gas flow meter during the detection process, avoids the gas flow meter from shaking or even falling due to external force collision during detection, and ensures the normal development of the detection work and the credibility of the detection data; the disassembly and assembly part 6 provided facilitates the disassembly and replacement of multiple feathers 5.

[0026] like Figure 3 As shown, the clamping portion 13 includes an installation cavity 1301, and the upper surface of the support plate 11 is provided with three installation cavities 1301 distributed in a circumference, a screw 1302 is rotatably connected inside the installation cavity 1301, a clamping plate 1303 is installed on the outer wall of the screw 1302, a motor 1304 for rotating the screw 1302 is installed inside the installation cavity 1301, and the side wall of the screw 1302 is slidably connected to the inner wall of the installation cavity 1301;

[0027] Specifically, the screw 1302 can be driven to rotate by the driving motor 1304 so as to change the placement of the clamping plate 1303 according to the size of the gas flow meter, so that the three clamping plates 1303 are gathered or dispersed, thereby ensuring the stability of the gas flow meter when being detected.

[0028] like Figure 3 As shown, a backing plate 1305 made of flexible plastic or soft rubber material is bonded to a wall surface of the clamping plate 1303 facing the gas flow meter;

[0029] Specifically, the pad 1305 can protect the outer surface of the gas flow meter and prevent the gas flow meter from being worn due to excessive clamping force. At the same time, the pad 1305 can also be squeezed and deformed when contacting the gas flow meter, thereby increasing the contact area and improving the clamping and fixing effect.

[0030] like Figure 3 As shown, the two sides of the clamping plate 1303 are mortised with inverted "L"-shaped stabilizing blocks 1307, and the upper surface of the support plate 11 is provided with a slide groove 1306 for the stabilizing blocks 1307 to slide;

[0031] Specifically, the slide groove 1306 and the stabilizing block 1307 can improve the stability of the clamping plate 1303 when it moves.

[0032] like Figure 4 As shown, the disassembly and assembly part 6 includes a top plate 601, the output ends of the three hydraulic cylinders 3 are connected to the top plate 601, the top plate 601 is made of silicone, a fixing ring 602 connected to the upper end of the feather 5 is installed at the bottom of the top plate 601, three circumferentially distributed hanging rings 603 are welded on the top of the fixing ring 602, three moving grooves 604 are opened at the bottom of the top plate 601, and a slider 605 is slidably connected inside the moving groove 604, and a hook 606 for hooking the hanging ring 603 is connected at the bottom of the slider 605;

[0033] In order to facilitate the disassembly and assembly of the hook 606, the connection between the slider 605 and the hook 606 is a threaded connection;

[0034] Specifically, by sliding the slider 605, the space formed between the three sliders 605 can be adjusted to a size suitable for fixing the fixing ring 602, and then the hook 606 is threadedly connected to the bottom of the slider 605, and the hook 606 with the hanging ring 603 on it can be fixed to achieve the installation and fixation of the fixing ring 602. The structure is simple and easy to operate.

[0035] When in use, the inspector can slide the slider 605 to connect it to the inside of the moving groove 604, so that the space formed by the three sliders 605 is consistent with the size of the fixing ring 602, and then the hook 606 with the hanging ring 603 hooked at the lower end is threadedly connected to the bottom of the slider 605 to achieve the installation of the fixing ring 602, and the gas flow meter to be tested is placed on the support plate 11, so that the air inlet of the gas flow meter corresponds to the center of the support plate 11 up and down, so that the output end of the air pump 12 can transport the gas to the inside of the gas flow meter through the air guide hose (when the air pump 12 is inflated, the output end of the air pump 12 is sealed and connected to the input end of the air guide hose, and the other end of the air guide hose is sealed and connected to the air inlet of the gas flow meter), and then drive the hydraulic cylinder 29 to move the support plate 11 up to the inner cavity of the leak detection box 1 (the outer diameter of the support plate 11 is smaller than The rubber pad 8 is deformed when subjected to the extrusion force, thereby sealing the through hole 7 to prevent external air from flowing into the inner cavity of the leak detection box 1. The three hydraulic cylinders 1-3 are then driven to drive the disassembly and assembly part 6 to descend, so as to lower the feather 5 to the outside of the sealing part of the gas flow meter (in actual use, dark-colored feathers 5, such as black, brown, etc., can be used for easy observation). At this time, the space formed by the side where the three movable grooves 604 are close to each other is larger than the other end of the gas flow meter, that is, the bottom surface of the top plate 601 can seal the other end of the gas flow meter. After the feather 5 stops floating, start the air pump 12 to inflate the inside of the gas flow meter to observe whether the feather 5 floats. If it floats, the gas flow meter is leaking, otherwise it is not leaking.

[0036] In summary: by moving the feather 5 to the outside of the sealing part of the gas flow meter, it is possible to observe whether the feather 5 flutters when the air pump 12 inflates the gas flow meter, so as to judge the sealing of the gas flow meter. Compared with immersing the device in water for detection, it effectively avoids the corrosion of the device by water stains, ensures the stability of the entire device during the detection process, ensures the accuracy and credibility of the detection data, and also ensures the service life of the device; the clamping part 13 provided can clamp and fix the gas flow meter placed on the support plate 11, ensure the stability of the gas flow meter during the detection process, avoid the gas flow meter from shaking or even falling due to external force collision during detection, and ensure the normal development of the detection work and the credibility of the detection data; the disassembly and assembly part 6 provided facilitates the disassembly and replacement of multiple feathers 5.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A leak detection device for a gas flow meter, characterized in that: The invention comprises a leak detection box (1) and a bracket (2) installed at the bottom of the leak detection box (1), wherein a through hole (7) is opened on the floor of the leak detection box (1), a plurality of feathers (5) are installed inside the leak detection box (1), three hydraulic cylinders (3) for moving the feathers (5) are installed on the inner wall of the leak detection box (1), the output end of the hydraulic cylinder (3) is provided with a disassembly and assembly part (6) for connecting the feathers (5), a support plate (11) is arranged inside the through hole (7), and three groups of clamping parts (13) for fixing a gas flow meter are arranged on the support plate (11), a hydraulic cylinder (9) is installed on the bracket (2), the output end of the hydraulic cylinder (9) is connected to a rubber pad (8) for supporting the support plate (11), an air pump (12) is installed on the rubber pad (8), and four support rods (10) are connected between the top of the rubber pad (8) and the bottom of the support plate (11).

2. The leak detection device for a gas flow meter according to claim 1, characterized in that: The clamping portion (13) comprises an installation cavity (1301), the upper surface of the support plate (11) is provided with three installation cavities (1301) distributed in a circumference, a screw rod (1302) is rotatably connected inside the installation cavity (1301), a clamping plate (1303) is installed on the outer wall surface of the screw rod (1302), and a motor (1304) for rotating the screw rod (1302) is installed inside the installation cavity (1301).

3. The leak detection device for a gas flow meter according to claim 2, characterized in that: A backing plate (1305) made of flexible plastic or soft rubber material is bonded to a wall surface of the clamping plate (1303) on one side facing the gas flow meter.

4. The leak detection device for a gas flow meter according to claim 2, characterized in that: The two sides of the clamping plate (1303) are mortised with inverted "L"-shaped stabilizing blocks (1307), and the upper surface of the supporting plate (11) is provided with a sliding groove (1306) for the stabilizing blocks (1307) to slide.

5. The leak detection device for a gas flow meter according to claim 1, characterized in that: The disassembly and assembly part (6) comprises a top plate (601), the output ends of the three hydraulic cylinders (3) are connected to the top plate (601), a fixing ring (602) connected to the upper end of the feather (5) is installed at the bottom of the top plate (601), three circumferentially distributed hanging rings (603) are welded to the top of the fixing ring (602), three movable grooves (604) are opened at the bottom of the top plate (601), sliders (605) are slidably connected inside the movable grooves (604), and a hook (606) for hooking the hanging ring (603) is connected to the bottom of the slider (605).

6. The leak detection device for a gas flow meter according to claim 5, characterized in that: The connection between the slider (605) and the hook (606) is a threaded connection.

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