A helium leak detection apparatus

Abstract

The utility model relates to the technical field of detection equipment especially is concerned on a kind of helium leak detection equipment, when using, workpiece is fixed by clamping assembly, when mass spectrometer chamber completes detection, start purging assembly, then the inside of mass spectrometer chamber is purged while opening pressure relief assembly, so that the helium gas in the inside of mass spectrometer chamber is discharged by pressure relief assembly, double-station filtering assembly carries out dust filtration to the air used by purging assembly, improve detection efficiency;Including support frame, mass spectrometer chamber and apron, the support frame top is provided with mass spectrometer chamber, the mass spectrometer chamber top is provided with apron, further including purging assembly, dust filtering component and clamping assembly, purging assembly is provided on the mass spectrometer chamber, the input end of purging assembly is provided with double-station dust filtering component, the inside bottom of mass spectrometer chamber is provided with clamping assembly, the mass spectrometer chamber is provided with pressure relief assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of detection equipment, in particular to a helium pressure leak detection equipment. BACKGROUND

[0002] The helium pressure leak detection equipment is also commonly known as a helium mass spectrometer leak detector. The helium mass spectrometer leak detector often has the following faults: the helium background is too high. The mechanical pump oil may be ineffective (the pump oil deteriorates after long-term use and absorbs a large amount of helium, resulting in helium contamination). In addition, attention should be paid to environmental pollution. If there are multiple leak detectors in the workshop and a large amount of helium is used, the ventilation in the workshop is poor. Or, the clean workshop adopts an upper air supply mode, and the airflow direction is from top to bottom. Due to the small molecular weight of helium, the helium diffuses upward, which causes slow diffusion of helium and leads to helium contamination.

[0003] In the prior art, a patent document with publication number CN212779789U discloses a helium mass spectrometer leak detector, which includes a workbench. A mass spectrometer chamber is provided on the workbench. A cover is provided on the mass spectrometer chamber. A blowing disturbance assembly is provided in the mass spectrometer chamber. The blowing disturbance assembly includes an air compressor provided on the workbench. A blowing assembly is provided in the mass spectrometer chamber and connected to the air compressor by a pipeline. A pressure relief unit is provided on one side of the mass spectrometer chamber.

[0004] During use, it is found that the above device collects dust through the water tank. However, the above device cannot continue to detect when the water tank is cleaned, which reduces the detection efficiency. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a helium pressure leak detection equipment.

[0006] The helium pressure leak detection equipment of the utility model includes a support frame, a mass spectrometer chamber, and a cover plate. The support frame has a mass spectrometer chamber at the top. The mass spectrometer chamber has a cover plate at the top. The helium pressure leak detection equipment also includes a purging assembly, a dust filtering assembly, and a clamping assembly. The mass spectrometer chamber has a purging assembly. The purging assembly has a double-station dust filtering assembly at the input end. The mass spectrometer chamber has a clamping assembly at the bottom. The mass spectrometer chamber has a pressure relief assembly. When in use, the workpiece is fixed by the clamping assembly. After the mass spectrometer chamber completes detection, the purging assembly is started. At the same time, the mass spectrometer chamber is purged, and the pressure relief assembly is opened. The helium in the mass spectrometer chamber is discharged through the pressure relief assembly. The double-station filtering assembly filters the dust in the air used by the purging assembly, which improves the detection efficiency.

[0007] Preferably, the blowing assembly comprises a blowing pipe, a blowing head, a fan, a first air conveying pipe, a fixing frame and a second air conveying pipe, the inside of the mass spectrometry chamber is fixedly installed with the blowing pipe through the fixing frame, the inner side wall of the blowing pipe is provided with a plurality of blowing heads, the outer side wall of the mass spectrometry chamber is provided with the fan, the output end of the fan is provided with the first air conveying pipe, the output end of the first air conveying pipe is communicated with the input end of the blowing pipe, the input end of the fan is provided with the second air conveying pipe, and the input end of the second air conveying pipe is provided with a double-station filtering assembly; the fan is started, so that external air filtered through the double-station filtering assembly enters the inside of the blowing pipe through the second air conveying pipe and the first air conveying pipe, and the air in the blowing pipe is blown and replaced to the inside of the mass spectrometry chamber through the plurality of blowing heads.

[0008] Preferably, the double-station filtering assembly comprises a tee pipe, an air inlet pipe, a filter screen and a valve, the input end of the second air conveying pipe is communicated with the output end of the tee pipe, the two input ends of the tee pipe are respectively communicated with the output end of a group of air inlet pipes, the input end of each group of air inlet pipes is detachably provided with a group of filter screens, and each group of air inlet pipes is respectively installed with a group of valves; in use, one group of valves is opened and the other group of valves is closed, so that the corresponding group of filter screens filters the air, and when the group of filter screens needs to be cleaned, the two groups of valves are switched, so that the group of filter screens is detached for cleaning, and the other group of filter screens filters the air, improving the detection efficiency.

[0009] Preferably, the clamping assembly comprises a vertical plate, a servo electric cylinder and a clamping plate, the bottom end of the inside of the mass spectrometry chamber is provided with two groups of vertical plates, the outer ends of the two groups of vertical plates are respectively installed with a group of servo electric cylinders, and the moving ends of the two groups of servo electric cylinders are respectively provided with a group of clamping plates; the two groups of servo electric cylinders are elongated, so that the two groups of clamping plates cooperatively fix the workpiece, improving the firmness.

[0010] Preferably, the pressure relief assembly comprises a pressure relief pipe and a pressure relief valve, the mass spectrometry chamber is installed with the pressure relief pipe, and the pressure relief pipe is provided with the pressure relief valve; when pressure relief, the pressure relief valve is opened, so that the gas in the inside of the mass spectrometry chamber is discharged through the pressure relief pipe, improving the convenience.

[0011] Preferably, it further comprises adjustable feet, and the bottom end of the support frame is respectively provided with a group of adjustable feet; the four groups of adjustable feet cooperatively stably support the support frame, improving the stability.

[0012] Preferably, it further comprises a handle, and the top end of the cover plate is provided with the handle; the cover plate is opened or closed by the handle by the staff, improving the convenience.

[0013] Compared with the prior art, the beneficial effects of the utility model are that: when using, the workpiece is fixed through the clamping assembly, after the mass spectrum chamber completes detection, the purge assembly is started, then the inside of the mass spectrum chamber is purged at the same time that the pressure relief assembly is opened, so that the helium in the inside of the mass spectrum chamber is discharged through the pressure relief assembly, the air used by the purge assembly is dust filtered through the double-station filtering assembly, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the first axial measurement structure schematic diagram of the utility model;

[0015] Figure 2 It is the explosion structure schematic diagram of the utility model;

[0016] Figure 3 It is the enlarged structure schematic diagram of the air blowing pipe, fan and the like structure;

[0017] Figure 4 It is the enlarged structure schematic diagram of the clamping plate, servo electric cylinder and the like structure;

[0018] Figure 5 It is the second axial measurement structure schematic diagram of the utility model.

[0019] Markings in the drawings: 1, support frame;2, mass spectrum chamber;3, cover plate;4, air blowing pipe;5, air blowing head;6, fan;7, No. 1 air conveying pipe;8, fixing frame;9, No. 2 air conveying pipe;10, three-way pipe;11, air inlet pipe;12, filter screen;13, dust filter screen;14, vertical plate;15, servo electric cylinder;16, clamping plate;17, pressure relief pipe;18, pressure relief valve;19, adjustable foot;20, handle. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Embodiment 1

[0022] As Figure 1 , Figure 2 and Figure 5 shown, a helium compression leak detection equipment of the utility model, including support frame 1, mass spectrum chamber 2 and cover plate 3, the support frame 1 top is provided with mass spectrum chamber 2, the mass spectrum chamber 2 top is provided with cover plate 3, still including purge assembly, dust filter assembly and clamping assembly, the mass spectrum chamber 2 is provided with purge assembly, the purge assembly input is provided with double-station dust filter assembly, the inside bottom of mass spectrum chamber 2 is provided with clamping assembly, the mass spectrum chamber 2 is provided with pressure relief assembly;

[0023] As Figure 2 and Figure 3 As shown in the figure, the purging assembly includes a blast pipe 4, a blast head 5, a fan 6, a first air conveying pipe 7, a fixing frame 8 and a second air conveying pipe 9, the inside of the mass spectrometer chamber 2 is fixedly installed with the blast pipe 4 through the fixing frame 8, the inner side wall of the blast pipe 4 is provided with a plurality of groups of blast heads 5, the outer side wall of the mass spectrometer chamber 2 is provided with the fan 6, the output end of the fan 6 is provided with the first air conveying pipe 7, the output end of the first air conveying pipe 7 is in communication with the input end of the blast pipe 4, the input end of the fan 6 is provided with the second air conveying pipe 9, and the input end of the second air conveying pipe 9 is provided with a double-station filtering assembly.

[0024] In this embodiment, when in use, the workpiece is fixed by the clamping assembly, after the mass spectrometer chamber 2 completes detection, the fan 6 is started, so that external air is filtered by the double-station filtering assembly, and then enters the inside of the blast pipe 4 through the second air conveying pipe 9 and the first air conveying pipe 7, and the air entering the inside of the blast pipe 4 is purged and replaced to the inside of the mass spectrometer chamber 2 through the plurality of groups of blast heads 5.

[0025] Embodiment 2

[0026] As Figure 1 and Figure 2 As shown in the figure, the utility model relates to a kind of helium leak detection equipment of pressing, including support frame 1, mass spectrometer chamber 2 and cover plate 3, the top of the support frame 1 is provided with mass spectrometer chamber 2, the top of the mass spectrometer chamber 2 is provided with cover plate 3, further including purging assembly, dust filtering assembly and clamping assembly, the mass spectrometer chamber 2 is provided with purging assembly, the input end of the purging assembly is provided with double-station dust filtering assembly, the inside bottom of the mass spectrometer chamber 2 is provided with clamping assembly, the mass spectrometer chamber 2 is provided with pressure relief assembly;

[0027] As Figure 2 and Figure 3 As shown in the figure, the purging assembly includes a blast pipe 4, a blast head 5, a fan 6, a first air conveying pipe 7, a fixing frame 8 and a second air conveying pipe 9, the inside of the mass spectrometer chamber 2 is fixedly installed with the blast pipe 4 through the fixing frame 8, the inner side wall of the blast pipe 4 is provided with a plurality of groups of blast heads 5, the outer side wall of the mass spectrometer chamber 2 is provided with the fan 6, the output end of the fan 6 is provided with the first air conveying pipe 7, the output end of the first air conveying pipe 7 is in communication with the input end of the blast pipe 4, the input end of the fan 6 is provided with the second air conveying pipe 9, and the input end of the second air conveying pipe 9 is provided with a double-station filtering assembly.

[0028] As Figure 3 As shown in the figure, the double-station filtering assembly includes a tee pipe 10, an air inlet pipe 11, a filter screen 12 and a valve 13, the input end of the second air conveying pipe 9 is in communication with the output end of the tee pipe 10, the two groups of input ends of the tee pipe 10 are respectively in communication with the output end of a group of air inlet pipes 11, the input end of each group of air inlet pipes 11 is detachably provided with a group of filter screens 12, and a group of valves 13 is respectively installed on each group of air inlet pipes 11.

[0029] As Figure 5 The clamping assembly includes vertical plates 14, servo electric cylinders 15 and clamping plates 16, two groups of vertical plates 14 are arranged at the bottom end inside the mass spectrum chamber 2, one group of servo electric cylinders 15 is arranged at the outer end of each group of vertical plates 14, and one group of clamping plates 16 is arranged at the moving end of each group of servo electric cylinders 15.

[0030] The pressure relief assembly includes a pressure relief pipe 17 and a pressure relief valve 18, the pressure relief pipe 17 is arranged on the mass spectrum chamber 2, and the pressure relief valve 18 is arranged on the pressure relief pipe 17.

[0031] Further comprising adjustable feet 19 and handles 20, one group of adjustable feet 19 is arranged at the bottom end of each corner of the support frame 1, and the handle 20 is arranged at the top end of the cover plate 3.

[0032] In this embodiment, when in use, the two groups of servo electric cylinders 15 are operated to be elongated, so that the two groups of clamping plates 16 cooperate with each other to fix the workpiece, when the mass spectrum chamber 2 completes detection, the fan 6 is started, one group of valves 13 is opened and the other group of valves 13 is closed, so that the corresponding group of filter screens 12 filters the air, when it is necessary to clean the dust of the group of filter screens 12, the two groups of valves 13 are switched, so that the group of filter screens 12 is disassembled for cleaning, and the other group of filter screens 12 filters the air, and the air entering the inside of the air blowing pipe 4 is blown and replaced in the inside of the mass spectrum chamber 2 through a plurality of air blowing heads 5.

[0033] The mass spectrum chamber 2, the fan 6 and the servo electric cylinder 15 of the pressure helium leak detection equipment are purchased on the market, and the technical personnel in the industry only needs to install and operate according to the use instruction manual attached thereto, without the creative labor of the technical personnel in the field.

[0034] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A helium leak detection device, comprising a support frame (1), a mass spectrometer chamber (2) and a cover plate (3), the support frame (1) is provided with the mass spectrometer chamber (2) at the top end, the mass spectrometer chamber (2) is provided with the cover plate (3) at the top end, characterized in that, Sweeping assembly, dust filtering assembly and clamping assembly are further included, the mass spectrum chamber (2) is provided with a sweeping assembly, the input end of the sweeping assembly is provided with a double-station dust filtering assembly, the inner bottom end of the mass spectrum chamber (2) is provided with a clamping assembly, and the mass spectrum chamber (2) is provided with a pressure relief assembly.

2. A press-helium leak detection apparatus as claimed in claim 1, wherein, The sweeping assembly includes a blowing pipe (4), a blowing head (5), a fan (6), a first air conveying pipe (7), a fixing frame (8) and a second air conveying pipe (9), the blowing pipe (4) is fixedly installed in the mass spectrum chamber (2) through the fixing frame (8), a plurality of groups of blowing heads (5) are arranged on the inner side wall of the blowing pipe (4), the outer side wall of the mass spectrum chamber (2) is provided with the fan (6), the output end of the fan (6) is provided with the first air conveying pipe (7), the output end of the first air conveying pipe (7) is communicated with the input end of the blowing pipe (4), the input end of the fan (6) is provided with the second air conveying pipe (9), and the input end of the second air conveying pipe (9) is provided with a double-station filtering assembly.

3. A press-helium leak detection apparatus as defined in claim 2, wherein, The double-station filtering assembly includes a three-way pipe (10), an air inlet pipe (11), a filter screen (12) and a valve (13), the input end of the second air conveying pipe (9) is communicated with the output end of the three-way pipe (10), the two groups of input ends of the three-way pipe (10) are respectively communicated with the output end of one group of air inlet pipes (11), the input end of each group of air inlet pipes (11) is detachably provided with one group of filter screens (12), and one group of valves (13) is installed on each group of air inlet pipes (11).

4. A press-helium leak detection apparatus as claimed in claim 3, wherein, The clamping assembly includes an upright plate (14), a servo electric cylinder (15) and a clamping plate (16), the inner bottom end of the mass spectrum chamber (2) is provided with two groups of upright plates (14), the outer ends of the two groups of upright plates (14) are respectively provided with one group of servo electric cylinders (15), and the moving ends of the two groups of servo electric cylinders (15) are respectively provided with one group of clamping plates (16).

5. A press-helium leak detection apparatus as defined in claim 1, wherein, The pressure relief assembly includes a pressure relief pipe (17) and a pressure relief valve (18), the mass spectrum chamber (2) is provided with the pressure relief pipe (17), and the pressure relief valve (18) is arranged on the pressure relief pipe (17).

6. A press-helium leak detection apparatus as defined in claim 1, wherein, Adjustable feet (19) are further included, and one group of adjustable feet (19) is arranged at the bottom end of each corner of the support frame (1).

7. A press-helium leak detection apparatus as defined in claim 1, wherein, A handle (20) is further included, and the handle (20) is arranged at the top end of the cover plate (3).

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