Inflation qualitative leak detection device of electromagnetic flowmeter shell

Abstract

The utility model discloses an inflation qualitative leak detection device of an electromagnetic flowmeter housing, comprising a leak detection box, the top of the leak detection box is provided with a gas sensor, the top of the leak detection box is provided with an inflation assembly, and the inner wall of the leak detection box enables a bearing plate to slide through a lifting assembly. The utility model relates to the technical field of electromagnetic flowmeter shell detection. According to the inflation qualitative leakage detection device of the electromagnetic flowmeter shell, the clamping mechanism is arranged, two sets of clamping plates synchronously slide towards the center under the driving of the driving motor, so that pipe openings in the two sides of the electromagnetic flowmeter shell are rapidly clamped and fixed, the sealing performance of the electromagnetic flowmeter shell is kept through the arranged rubber sealing gasket, and then the air inflation qualitative leakage detection device of the electromagnetic flowmeter shell is used for detecting the air inflation qualitative leakage of the electromagnetic flowmeter shell. Inflation and detection operations are performed through the compressor and the gas sensor, so that inflation qualitative leakage detection operation of the electromagnetic flowmeter shell is realized, leakage points of the electromagnetic flowmeter shell are avoided, and the finished product quality of the electromagnetic flowmeter shell is improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic flowmeter housing detection technology, specifically to an air-filling qualitative leak detection device for electromagnetic flowmeter housings. Background Technology

[0002] The reference patent title is: "A Qualitative Leak Detection Device for Inflating Electromagnetic Flowmeter Housing" (Patent Publication No.: CN220322631U, Patent Publication Date: 2024.01.09). It includes a main pressurization pipe equipped with an air compressor and a pressurization connection device. The pressurization connection device includes a pressurization branch pipe, an inflation connector connected to the outlet end of the pressurization branch pipe, and a regulating valve and a first pressure sensor on the pressurization branch pipe. The inflation connector includes a housing with a lower pressure plate inside. A through groove is provided on the housing above the lower pressure plate, and an inflation pipe is provided on the through groove and the lower pressure plate, connecting to the pressurization branch pipe. A support plate is provided below the housing, and an inflation connector is provided on the inflation pipe below the lower pressure plate. A sealing gasket is provided on the outside of the inflation connector. A connecting slot is provided on the support plate below the lower pressure plate. This device enables qualitative leak detection of the welded electromagnetic flowmeter housing. It is easy to adjust and use, and has broad market prospects.

[0003] Based on the above-mentioned documents: In the production of existing electromagnetic flowmeter housings, multiple sets of components need to be connected and fixed by welding. In order to ensure the accuracy of the electromagnetic flowmeter in subsequent use, it is necessary to maintain the airtightness of the electromagnetic flowmeter housing to avoid leaks in the weld seams of the electromagnetic flowmeter housing, which would affect the quality of the finished product. However, the process of performing air-filling qualitative leak detection on the electromagnetic flowmeter housing in the above-mentioned technical solutions is relatively cumbersome and cannot quickly perform air-filling qualitative leak detection on the electromagnetic flowmeter housing. Therefore, this utility model provides an air-filling qualitative leak detection device for electromagnetic flowmeter housings. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an air-filling qualitative leak detection device for electromagnetic flowmeter housings, which solves the problem that existing electromagnetic flowmeter housings cannot be quickly filled with air for qualitative leak detection after welding.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas-filled qualitative leak detection device for an electromagnetic flowmeter housing, comprising a leak detection box, a gas sensor mounted on the top of the leak detection box, a gas filling assembly on the top of the leak detection box, a lifting assembly that allows a supporting plate to slide along the inner wall of the leak detection box, and a clamping mechanism inside the supporting plate, the clamping mechanism comprising:

[0006] The clamping assembly includes a guide rail installed at the bottom of the inner cavity of the support plate, a sliding plate slidably connected to the surface of the guide rail, a rotating rod rotatably connected to one side of the sliding plate, a sliding block rotatably connected to one end of the rotating rod, a sliding rod fixedly connected to the top of the sliding plate, a clamping plate fixedly connected to one end of the sliding rod, and a rubber sealing gasket installed on the inner side of the clamping plate.

[0007] The drive assembly is located inside the carrier plate.

[0008] Preferably, the drive assembly includes a drive motor mounted on the rear side of the support plate, and one end of the output shaft of the drive motor is fixedly connected to a bidirectional lead screw via a coupling, the surface of the bidirectional lead screw being threadedly connected to the internal thread of the sliding block.

[0009] Preferably, the top of the support plate is provided with a sliding groove, and the inner surface of the sliding groove is slidably connected to the surface of the sliding rod.

[0010] Preferably, the inflation assembly includes a nitrogen tank and a compressor installed on the top of the leak detection box. One side of the nitrogen tank is fixedly connected to one side of the compressor via a connecting pipe. The bottom of the compressor is fixedly connected to the inside of the clamp via a folded hose. One end of the folded hose is fixedly connected to an air nozzle.

[0011] Preferably, the lifting assembly includes a lifting motor installed on the left side of the inner wall of the leak detection box. One end of the output shaft of the lifting motor is fixedly connected to a lifting screw via a coupling. One end of the lifting screw is rotatably connected to the bottom of the inner cavity of the leak detection box. The surface of the lifting screw is threadedly connected to the internal thread of the support plate.

[0012] Preferably, a positioning rod is installed on the right side of the inner wall of the leak detection box, and the surface of the positioning rod is slidably connected to the inside of the support plate.

[0013] Beneficial effects

[0014] This invention provides a qualitative leak detection device for the air filling of an electromagnetic flowmeter housing. Compared with the prior art, it has the following advantages:

[0015] (1) The air-filling qualitative leak detection device for the electromagnetic flowmeter housing is driven by a drive motor to rotate a bidirectional lead screw. The rotation of the bidirectional lead screw causes the sliding block to slide at the bottom of the inner cavity of the bearing plate. The two sliding blocks on both sides slide synchronously to opposite sides. The sliding of the sliding block causes one end of the rotating rod to rotate on the surface of the sliding block, and the other end of the rotating rod to rotate on one side of the sliding plate. This causes the two sliding plates on both sides to slide synchronously to opposite sides. The sliding plate slides on the surface of the guide rail. The sliding of the sliding plate causes the sliding rod and the clamping plate to slide synchronously. The electromagnetic flowmeter housing is clamped and fixed by two sets of clamping plates, so that the rubber on the inner side of the clamping plate is sealed. The gaskets fit snugly against the pipe openings at both ends of the electromagnetic flowmeter housing to maintain the internal sealing of the housing. A clamping mechanism, driven by a motor, causes two sets of clamping plates to slide synchronously towards the center, quickly clamping and fixing the pipe openings on both sides of the electromagnetic flowmeter housing. The rubber sealing gaskets further maintain the airtightness of the housing. Subsequently, a compressor and gas sensor are used for inflation and testing, enabling qualitative leak detection of the electromagnetic flowmeter housing and preventing leaks, thus improving the overall quality of the finished product.

[0016] (2) The air-filled qualitative leak detection device for the electromagnetic flowmeter housing is equipped with a lifting component. With the help of the lifting motor, the height of the support plate and the electromagnetic flowmeter housing can be flexibly adjusted. The electromagnetic flowmeter housing is fully submerged in the water at the bottom of the leak detection box, so as to quickly determine the specific location of the leak on the surface of the electromagnetic flowmeter housing, which is convenient for subsequent repair and reuse. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the external structure of this utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the lifting component of this utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the internal structure of the bearing plate of this utility model.

[0021] In the diagram: 1-Leak detection box, 2-Gas sensor, 3-Inflation assembly, 31-Nitrogen tank, 32-Compressor, 33-Folded hose, 34-Gas nozzle, 4-Lifting assembly, 41-Lifting motor, 42-Lifting screw, 5-Bearing plate, 6-Clamping mechanism, 61-Clamping assembly, 611-Guide rail, 612-Sliding plate, 613-Rotating rod, 614-Sliding block, 615-Sliding rod, 616-Clamping plate, 617-Rubber sealing gasket, 62-Drive assembly, 621-Drive motor, 622-Bidirectional screw, 7-Sliding groove, 8-Positioning rod. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A qualitative leak detection device for an electromagnetic flowmeter housing includes a leak detection box 1, a gas sensor 2 mounted on the top of the leak detection box 1, an inflation assembly 3 on the top of the leak detection box 1, a lifting assembly 4 that allows a support plate 5 to slide along the inner wall of the leak detection box 1, and a clamping mechanism 6 inside the support plate 5. The clamping mechanism 6 includes:

[0025] The clamping assembly 61 includes a guide rail 611 installed at the bottom of the inner cavity of the bearing plate 5. A sliding plate 612 is slidably connected to the surface of the guide rail 611. A rotating rod 613 is rotatably connected to one side of the sliding plate 612. A sliding block 614 is rotatably connected to one end of the rotating rod 613. A sliding rod 615 is fixedly connected to the top of the sliding plate 612. A clamping plate 616 is fixedly connected to one end of the sliding rod 615. A rubber sealing gasket 617 is installed on the inner side of the clamping plate 616.

[0026] The drive assembly 62 is located inside the support plate 5.

[0027] Gas sensor 2 is a converter that converts the volume fraction of a certain gas into a corresponding electrical signal, used to detect whether there is nitrogen leakage inside the leak detection box 2; guide rail 611 is used to limit the sliding of sliding plate 612, a positioning rail is installed at the center of the bottom of the inner cavity of the support plate 5, and sliding block 614 slides on the surface of the positioning rail; the bottom of the inner cavity of the leak detection box 1 is filled with water, used to detect leaks on the surface of the electromagnetic flowmeter housing, and a transparent observation window is installed at the bottom of the front side of the leak detection box 1; support plate 5 slides on the inner wall of the leak detection box 1.

[0028] In this embodiment, the drive assembly 62 includes a drive motor 621 mounted on the rear side of the support plate 5. One end of the output shaft of the drive motor 621 is fixedly connected to a bidirectional lead screw 622 via a coupling. The surface of the bidirectional lead screw 622 is threadedly connected to the inside of the sliding block 614.

[0029] The drive motor 621 is a three-phase asynchronous motor and is connected to an external circuit via wires. The surface of the bidirectional lead screw 622 rotates with the interior of the bearing plate 5.

[0030] In this embodiment, a sliding groove 7 is provided on the top of the support plate 5, and the inner surface of the sliding groove 7 is slidably connected to the surface of the sliding rod 615.

[0031] In this embodiment, the inflation assembly 3 includes a nitrogen tank 31 and a compressor 32 installed on the top of the leak detection box 1. One side of the nitrogen tank 31 is fixedly connected to one side of the compressor 32 through a connecting pipe. The bottom of the compressor 32 is fixedly connected to the inside of the clamping plate 616 through a folded hose 33. One end of the folded hose 33 is fixedly connected to an air nozzle 34.

[0032] Compressor 32 is a nitrogen compressor, which is connected to an external circuit via wires.

[0033] In this embodiment, the lifting assembly 4 includes a lifting motor 41 installed on the left side of the inner wall of the leak detection box 1. One end of the output shaft of the lifting motor 41 is fixedly connected to a lifting screw 42 via a coupling. One end of the lifting screw 42 is rotatably connected to the bottom of the inner cavity of the leak detection box 1. The surface of the lifting screw 42 is threadedly connected to the inside of the bearing plate 5.

[0034] The lifting motor 41 is a three-phase asynchronous motor and is connected to an external circuit via wires.

[0035] In this embodiment, a positioning rod 8 is installed on the right side of the inner wall of the leak detection box 1, and the surface of the positioning rod 8 is slidably connected to the inside of the bearing plate 5.

[0036] The positioning rod 8 is used to slide and position the support plate 5, so as to keep the support plate 5 from shifting when it slides up and down.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] During operation, the drive motor 621 drives the bidirectional lead screw 622 to rotate. The rotation of the bidirectional lead screw 622 causes the sliding block 614 to slide at the bottom of the inner cavity of the bearing plate 5. The two sliding blocks 614 on both sides slide synchronously to opposite sides. The sliding of the sliding blocks 614 causes one end of the rotating rod 613 to rotate on the surface of the sliding block 614, and the other end of the rotating rod 613 to rotate on one side of the sliding plate 612. This causes the two sliding plates 612 on both sides to slide synchronously to opposite sides. The sliding plates 612 slide on the surface of the guide rail 611. The sliding of the sliding plates 612 causes the sliding rod 615 and the clamping plate 616 to slide synchronously. The electromagnetic flowmeter housing is clamped and fixed by the two sets of clamping plates 616, so that the rubber sealing gasket 617 on the inner side of the clamping plate 616 is fully in contact with both ends of the electromagnetic flowmeter housing. The pipe openings are fitted together to maintain the airtightness of the electromagnetic flowmeter housing. Then, the door is closed to keep the inside of the leak detection box 1 sealed. The compressor 32 is then started to introduce nitrogen from the nitrogen tank 31 into the electromagnetic flowmeter housing. The gas sensor 2 monitors the gas inside the leak detection box 1 in real time to detect whether there is a nitrogen leak, thus achieving qualitative leak detection of the electromagnetic flowmeter housing. If the gas sensor 2 detects a nitrogen leak in the leak detection box 1, the lifting motor 41 is started to drive the lifting screw 42 to rotate. The rotation of the lifting screw 42 causes the support plate 5 and the electromagnetic flowmeter housing to slide downward synchronously, so that the electromagnetic flowmeter housing is submerged in the water at the bottom of the leak detection box 1. This allows for observation of the leak point on the surface of the electromagnetic flowmeter housing, facilitating subsequent repair and reuse.

[0039] 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.

[0040] 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 qualitative leak detection device for the air filling of an electromagnetic flowmeter housing, comprising a leak detection box (1), characterized in that: A gas sensor (2) is installed on the top of the leak detection box (1), and an inflation assembly (3) is provided on the top of the leak detection box (1). The inner wall of the leak detection box (1) is slidable by a lifting assembly (4) to support the plate (5). A clamping mechanism (6) is provided inside the support plate (5), and the clamping mechanism (6) includes: The clamping assembly (61) includes a guide rail (611) installed at the bottom of the inner cavity of the bearing plate (5). A sliding plate (612) is slidably connected to the surface of the guide rail (611). A rotating rod (613) is rotatably connected to one side of the sliding plate (612). A sliding block (614) is rotatably connected to one end of the rotating rod (613). A sliding rod (615) is fixedly connected to the top of the sliding plate (612). A clamping plate (616) is fixedly connected to one end of the sliding rod (615). A rubber sealing gasket (617) is installed on the inner side of the clamping plate (616). The drive assembly (62) is located inside the support plate (5).

2. The air-filling qualitative leak detection device for an electromagnetic flowmeter housing according to claim 1, characterized in that: The drive assembly (62) includes a drive motor (621) mounted on the rear side of the support plate (5). One end of the output shaft of the drive motor (621) is fixedly connected to a bidirectional lead screw (622) via a coupling. The surface of the bidirectional lead screw (622) is threadedly connected to the inside of the sliding block (614).

3. The air-filling qualitative leak detection device for an electromagnetic flowmeter housing according to claim 1, characterized in that: The top of the support plate (5) is provided with a sliding groove (7), and the inner surface of the sliding groove (7) is slidably connected to the surface of the sliding rod (615).

4. The air-filling qualitative leak detection device for an electromagnetic flowmeter housing according to claim 1, characterized in that: The inflation assembly (3) includes a nitrogen tank (31) and a compressor (32) installed on the top of the leak detection box (1). One side of the nitrogen tank (31) is fixedly connected to one side of the compressor (32) through a connecting pipe. The bottom of the compressor (32) is fixedly connected to the inside of the clamp (616) through a folded hose (33). One end of the folded hose (33) is fixedly connected to an air nozzle (34).

5. The air-filling qualitative leak detection device for an electromagnetic flowmeter housing according to claim 1, characterized in that: The lifting assembly (4) includes a lifting motor (41) installed on the left side of the inner wall of the leak detection box (1). One end of the output shaft of the lifting motor (41) is fixedly connected to a lifting screw (42) via a coupling. One end of the lifting screw (42) is rotatably connected to the bottom of the inner cavity of the leak detection box (1). The surface of the lifting screw (42) is threadedly connected to the inside of the bearing plate (5).

6. The air-filling qualitative leak detection device for an electromagnetic flowmeter housing according to claim 1, characterized in that: A positioning rod (8) is installed on the right side of the inner wall of the leak detection box (1), and the surface of the positioning rod (8) is slidably connected to the inside of the bearing plate (5).

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