Calibrating device for air tightness leak detector

Abstract

The utility model discloses a calibration device for an air tightness leak detector, which relates to the technical field of detection instruments and comprises a calibrator body, an air pressure hose is mounted at the front end of the calibrator body, an air pressure empty box is mounted at one end, far away from the calibrator body, of the air pressure hose, and the calibrator body is matched with the air pressure empty box. External adding boxes are arranged at the outer ends of the air pressure empty boxes, annular open grooves are formed between the external adding boxes and the air pressure empty boxes, spherical blocks are slidably connected to the upper ends of the annular open grooves, sliding vertical rods are symmetrically and fixedly connected to the front sides and the rear sides of the lower ends of the spherical blocks, and hollowed-out annular plates are fixedly connected to the inner side walls of the two external adding boxes. According to the scheme, the gas monitoring sensors in the sliding vertical rods are used for detecting gas leakage points on the outer wall of the air pressure hose, and the problem that a measurement structure is not accurate enough due to the fact that the air pressure hose has the leakage points is solved; and the service life of the air pressure hose is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of detection instruments, in particular to a calibration device for an airtight leak detector. Background Art

[0002] The differential pressure leak detector is a conventional leak detection and analysis instrument widely used both domestically and internationally, in industries such as the automotive and auto parts industry, the vacuum industry, and the gas appliance industry. Using compressed air as the detection medium, the differential pressure leak detector is a specialized leak detection instrument and is a common leak detection instrument in leak detection technology. In an era of continuous technological advancement, differential pressure leak detection and its application technology are also constantly evolving and improving.

[0003] For example, announcement number CN202420784U discloses a high-precision differential pressure air tightness leak detector, including a filter pressure reducing valve assembly and a valve seat, on which an inflation valve, an air release valve, a balancing valve one and a balancing valve two are installed, the filter pressure reducing valve assembly is connected to the inflation valve, the inflation valve is connected to the air release valve, and the air release valve is connected to the air release port, a branch is opened between the inflation valve and the air release valve, and the branch is connected to an absolute pressure sensor. The utility model has a simple structure, a long service life, a high degree of automation, high detection accuracy, high detection sensitivity, and good application prospects.

[0004] However, the air pressure hose of this leak detector cannot self-check for leaks during use, reducing the reliability of the device after prolonged use. Furthermore, the air pressure hose of existing products is difficult to store, which can easily lead to damage. This is not conducive to ensuring the efficient use of the airtightness leak detector calibration device and significantly reduces its service life.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a calibration device for an airtight leak detector is proposed. Utility Model Content

[0006] The purpose of the present utility model is to provide a calibration device for an airtight leak detector, so as to solve the problem that when the leak detector equipment proposed in the above background technology is used, the air pressure hose is not convenient for self-checking whether there is a leak point, and the air pressure hose is not convenient for storage, which can easily lead to its damage, which is not conducive to ensuring the use efficiency of the calibration device for the airtight leak detector.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a calibration device for an airtight leak detector, comprising a calibrator body, a pressure hose installed at the front end of the calibrator body, a pressure empty box installed at the end of the pressure hose away from the calibrator body, the calibrator body and the pressure empty box cooperate with each other, an external plus box is provided at the outer end of the pressure empty box, an annular groove is provided between the external plus box and the pressure empty box, a spherical block is slidably connected to the upper end of the annular groove, and sliding vertical rods are symmetrically fixedly connected to the front and rear sides of the lower end of the spherical block, the inner side walls of the two external plus boxes are fixedly connected to a hollow ring plate, and the lower sides of the two sliding vertical rods close to each other are fixedly connected to gas monitoring sensors.

[0008] Furthermore, the air pressure hose can be wound around the outside of the external box and cooperate with the two sliding vertical rods.

[0009] Furthermore, the gas monitoring sensor cooperates with the air pressure hose.

[0010] Furthermore, an annular concave groove is provided at the outer end of the external box, and the annular concave groove is engaged with the air pressure hose.

[0011] Furthermore, the hollow ring plate is located on the inner side wall of the annular concave groove, and the air pressure hose is in contact with the hollow ring plate.

[0012] Furthermore, a pressure gauge is installed at the inner end of the air pressure empty box, and a display screen is fixedly connected to the front side of the upper end of the calibrator body.

[0013] Furthermore, a lifting handle is fixedly connected to the middle of the upper end of the calibrator body, and control buttons are symmetrically provided at the upper end and the rear end of the calibrator body.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This solution wraps the air pressure hose around the outside of the outer box and overlaps it with the hollow ring plate. By holding the spherical block and pressing down the two sliding vertical rods, the two sliding vertical rods are respectively engaged with the two sides of the air pressure hose. When the sliding vertical rod follows the spherical block to move in the annular groove, the gas monitoring sensor in the sliding vertical rod can detect the gas leakage point on the outer wall of the air pressure hose, and carry out timely repair and replacement, avoiding the problem of inaccurate measurement structure caused by leakage points in the air pressure hose, improving the reliability of equipment use, and helping to ensure the service life of the air pressure hose.

[0016] 2. At the same time, when the air pressure hose is used up, the sliding vertical rod can be pulled up to expose the annular concave groove as a whole, so that the air pressure hose can be wound in the annular concave groove. The annular concave groove can be used to stably clamp and wind the air pressure hose, which is convenient for storage and helps to ensure the service life of the air pressure hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the axial structure of the calibrator body;

[0018] Figure 2 This is an enlarged structural diagram of the air pressure empty box;

[0019] Figure 3 This is an enlarged structural diagram of the sliding vertical rod;

[0020] Figure 4 This is a schematic diagram of the partially enlarged and truncated structure of the annular concave groove.

[0021] In the figure: 1. Calibrator body; 2. Air pressure hose; 3. External box; 4. Annular concave groove; 5. Sliding vertical rod; 6. Spherical block; 7. Air pressure empty box; 8. Annular groove; 9. Pressure gauge; 11. Gas monitoring sensor; 12. Lifting handle; 13. Display screen; 14. Control button; 15. Hollow ring plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1: Figure 1-Figure 4 As shown, a calibration device for an airtight leak detector includes a calibrator body 1, a pneumatic hose 2 is installed at the front end of the calibrator body 1, a pneumatic empty box 7 is installed at the end of the pneumatic hose 2 away from the calibrator body 1, the calibrator body 1 and the pneumatic empty box 7 cooperate with each other, an external plus box 3 is provided at the outer end of the pneumatic empty box 7, an annular groove 8 is provided between the external plus box 3 and the pneumatic empty box 7, a spherical block 6 is slidably connected to the upper end of the annular groove 8, and a sliding vertical rod 5 is symmetrically fixedly connected to the front and rear sides of the lower end of the spherical block 6, a hollow ring plate 15 is fixedly connected to the inner side walls of the two external plus boxes 3, and a gas monitoring sensor 11 is fixedly connected to the lower side of the two sliding vertical rods 5 close to each other.

[0024] Furthermore, the air pressure hose 2 can be wound around the outside of the external box 3 and cooperate with the two sliding vertical rods 5.

[0025] Furthermore, the gas monitoring sensor 11 cooperates with the air pressure hose 2 .

[0026] Furthermore, a pressure gauge 9 is installed at the inner end of the air pressure empty box 7 , and a display screen 13 is fixedly connected to the front side of the upper end of the calibrator body 1 .

[0027] Furthermore, a lifting handle 12 is fixedly connected to the middle of the upper end of the calibrator body 1, and control buttons 14 are symmetrically provided at the upper end and the rear end of the calibrator body 1.

[0028] Example 2: Figure 1-Figure 4 As shown, the present invention proposes a calibration device for an airtight leak detector. Compared with Example 1, as another embodiment of the present invention, when working, an annular concave groove 4 is provided at the outer end of an external box 3, and the annular concave groove 4 is engaged with the air pressure hose 2.

[0029] Furthermore, the hollow ring plate 15 is located on the inner side wall of the annular inner concave groove 4 , and the air pressure hose 2 is in contact with the hollow ring plate 15 .

[0030] Working principle: When using this calibration device for airtight leak detector, first, this solution connects the calibrator body 1 and the air pressure empty box 7 through the air pressure hose 2 to perform the corresponding air pressure detection operation, and during the maintenance process, the air pressure hose 2 is fitted and wrapped around the external box 3, and overlaps with the position of the hollow ring plate 15.

[0031] Secondly, by holding the spherical block 6 and pressing down the two sliding vertical rods 5, the two sliding vertical rods 5 are respectively engaged with the two sides of the air pressure hose 2. When the sliding vertical rods 5 follow the spherical block 6 to move in the annular groove 8, the gas monitoring sensor 11 in the sliding vertical rod 5 can detect the gas leakage points on the outer wall of the air pressure hose 2, and carry out timely repair and replacement, so as to avoid the problem of inaccurate measurement structure caused by leakage points in the air pressure hose 2, which is beneficial to ensuring the service life of the air pressure hose 2.

[0032] Finally, when the air pressure hose 2 is finished being used, the sliding vertical rod 5 can be pulled up to expose the annular concave groove 4 as a whole, so that the air pressure hose 2 can be wound in the annular concave groove 4, and the annular concave groove 4 can be used to stably engage and wind the air pressure hose 2, which is convenient for storing the air pressure hose 2 and helps to ensure the service life of the air pressure hose 2.

[0033] This is the working principle of the calibration device for airtightness leak detector.

[0034] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A calibration device for an airtight leak detector, comprising a calibrator body (1), characterized in that: A pneumatic hose (2) is installed at the front end of the calibrator body (1), and a pneumatic empty box (7) is installed at one end of the pneumatic hose (2) away from the calibrator body (1). The calibrator body (1) and the pneumatic empty box (7) cooperate with each other, and an external additional box (3) is provided at the outer end of the pneumatic empty box (7). An annular groove (8) is provided between the external additional box (3) and the pneumatic empty box (7). A spherical block (6) is slidably connected to the upper end of the annular groove (8), and sliding vertical rods (5) are symmetrically fixedly connected to the front and rear sides of the lower end of the spherical block (6). The inner side walls of the two external additional boxes (3) are fixedly connected to hollow ring plates (15), and the lower sides of the two sliding vertical rods (5) close to each other are fixedly connected to gas monitoring sensors (11).

2. A calibration device for an airtight leak detector according to claim 1, characterized in that: The air pressure hose (2) can be wound around the outside of the external box (3) and cooperate with the two sliding vertical rods (5).

3. A calibration device for an airtight leak detector according to claim 1, characterized in that: The gas monitoring sensor (11) cooperates with the air pressure hose (2).

4. A calibration device for an airtight leak detector according to claim 1, characterized in that: An annular inner concave groove (4) is formed at the outer end of the external box (3), and the annular inner concave groove (4) is engaged with the inside of the air pressure hose (2).

5. The calibration device for an airtight leak detector according to claim 1, characterized in that: The hollow ring plate (15) is located on the inner side wall of the annular inner concave groove (4), and the air pressure hose (2) is in contact with the hollow ring plate (15).

6. A calibration device for an airtight leak detector according to claim 1, characterized in that: A barometer (9) is installed at the inner end of the air pressure box (7), and a display screen (13) is fixedly connected to the front side of the upper end of the calibrator body (1).

7. A calibration device for an airtight leak detector according to claim 1, characterized in that: A lifting handle (12) is fixedly connected to the middle of the upper end of the calibrator body (1), and control buttons (14) are symmetrically arranged at the upper end and the rear end of the calibrator body (1).

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