Dewar flask air tightness detection device

Abstract

The utility model discloses a Dewar flask airtightness detection device, which comprises a fixing mechanism, a conveying mechanism, a positioning mechanism, a vacuum system, a helium device and a detection device, and is characterized in that the conveying mechanism is mounted on the fixing mechanism to convey a Dewar flask, the positioning mechanism is slidably mounted on the fixing mechanism to fix the Dewar flask, and the vacuum system is mounted on the fixing mechanism to vacuumize; the helium device is mounted on the fixing mechanism for introducing helium, and the detection device is mounted on the fixing mechanism for detecting the airtightness of the Dewar flask. When the detection device works, the conveying mechanism is started to convey the Dewar flask to a designated position, the positioning mechanism is started to limit and fix the Dewar flask to prevent the Dewar flask from moving in the detection process, the vacuum system is started to vacuumize the Dewar flask, the helium device is started to spray helium to the Dewar flask, and whether the detection device changes or not is observed, so that the detection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a dewar flask air tightness detection device, in particular to a dewar flask air tightness detection device. Background Art

[0002] Dewar flask is an ideal container and tool for storing liquid gas, cryogenic research and protecting crystal components. It is designed for storing, transporting and using cryogenic liquid gases such as liquid oxygen and liquid nitrogen. It is widely used in various cryogenic liquid gases. In order to ensure safety during transportation, an airtightness test must be carried out before use.

[0003] At present, there is an airtightness detection device for a Dewar flask disclosed in the utility model patent with application number CN202023186992.1. The rotation of the handle drives the rotation of the forward and reverse screws, and the rotation of the forward and reverse screws drives the separation and closing of the two sliders. The movement of the slider drives the movement of the arc block, and the arc block is used to limit and fix the Dewar flask, so as to realize the airtightness test of the Dewar flask.

[0004] However, it was found during use that the positioning mechanism was complicated, so a simple structure was set up to fix the Dewar flask to ensure the accuracy of the airtightness test. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a dewar flask air tightness detection device, which can detect the air tightness of the dewar flask by fixing the dewar flask.

[0006] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0007] A dewar flask air tightness detection device comprises a fixing mechanism; a conveying mechanism, a positioning mechanism, a vacuum system, a helium device and a detection device, wherein the conveying mechanism is installed on the fixing mechanism to convey the dewar flask, the positioning mechanism is slidably installed on the fixing mechanism to fix the dewar flask, the vacuum system is installed on the fixing mechanism to evacuate, the helium device is installed on the fixing mechanism to pass helium, and the detection device is installed on the fixing mechanism to detect the air tightness of the dewar flask; the conveying mechanism is started to transport the dewar flask to a specified position, the positioning mechanism is started to limit and fix the dewar flask to prevent it from moving during the detection process, the vacuum system is started to evacuate the dewar flask, the helium device is started to spray helium to the dewar flask, and whether the detection device changes is observed, thereby achieving the detection effect.

[0008] Preferably, the fixing mechanism comprises a workbench and a support frame, the workbench is fixedly mounted on the top of the support frame, and a positioning groove is arranged on the workbench; the support frame supports the workbench.

[0009] Preferably, the conveying mechanism includes multiple rollers, belts and a first motor, the multiple rollers are installed on a workbench, the belts are installed on the rollers, the first motor is installed on the side end of the workbench, and the output end of the first motor is connected to one of the rollers; starting the first motor causes the rollers to rotate and drives the belt transmission to convey the Dewar flask.

[0010] Preferably, the positioning mechanism includes a rotating shaft, a second motor and two groups of sliders. The rotating shaft is installed at the bottom end of the workbench, the second motor is installed on the rotating shaft, one end of the two groups of sliders are respectively installed at the two ends of the rotating shaft, and the other end is slidably installed on the workbench, and the two groups of sliders are provided with pins that just match the slots on the workbench; starting the second motor to rotate the rotating shaft drives the sliders to move on the workbench.

[0011] Preferably, the vacuum system includes a vacuum pump, an exhaust pipe and a valve. The vacuum pump is installed on the top of the workbench. One end of the exhaust pipe is connected to the output end of the vacuum pump, and the other end is connected to the Dewar flask through the valve. Open the valve to start the vacuum pump to evacuate the Dewar flask through the exhaust pipe.

[0012] Preferably, the helium device includes a helium cylinder and a helium discharge pipe, the helium cylinder is installed on the top of the workbench, one end of the helium discharge pipe is connected to the outlet of the helium cylinder, and the other end sprays helium to the Dewar flask; open the helium cylinder to spray nitrogen to the outlet of the Dewar flask.

[0013] Preferably, the detection device includes a detector and a detector. The detector is installed on the top of the workbench. One end of the detector is connected to the detector, and the other end performs airtightness detection on the Dewar flask. When spraying nitrogen, observe whether there are any changes in the detector, so as to achieve the detection effect.

[0014] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0015] The utility model transports the Dewar flask to a designated position through a transport mechanism, starts a positioning mechanism to limit and fix the Dewar flask to prevent it from moving during the detection process, starts a vacuum system to evacuate the Dewar flask, starts a helium device to spray helium into the Dewar flask, and observes whether the detection device has any changes, thereby achieving the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the axonometric structure of the fixing mechanism and the conveying mechanism of the utility model;

[0018] Figure 3 It is a schematic diagram of the axonometric structure of the positioning mechanism and vacuum system of the utility model;

[0019] Figure 4It is a schematic diagram of the axonometric structure of the helium device and the detection device of the utility model.

[0020] Markings in the accompanying drawings: 01, fixing mechanism; 11, workbench; 12, supporting frame; 02, conveying mechanism; 21, roller; 22, belt; 23, first motor; 03, positioning mechanism; 31, rotating shaft; 32, second motor; 33, slider; 04, vacuum system; 41, vacuum pump; 42, exhaust pipe; 43, valve; 05, helium device; 51, helium bottle; 52, helium exhaust pipe; 06, detection device; 61, detector; 62, detector. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] A dewar flask air tightness detection device comprises a fixing mechanism 01, a conveying mechanism 02, a positioning mechanism 03, a vacuum system 04, a helium device 05 and a detection device 06.

[0023] The conveying mechanism 02 is installed on the fixing mechanism 01 to convey the Dewar flask, the positioning mechanism 03 is slidably installed on the fixing mechanism 01 to fix the Dewar flask, the vacuum system 04 is installed on the fixing mechanism 01 to evacuate the vacuum, the helium device 05 is installed on the fixing mechanism 01 to pass helium, and the detection device 06 is installed on the fixing mechanism 01 to detect the airtightness of the Dewar flask.

[0024] The fixing mechanism 01 includes a workbench 11 and a support frame 12 . The workbench 11 is fixedly installed on the top of the support frame 12 , and a positioning groove is provided on the workbench 11 .

[0025] The conveying mechanism 02 includes multiple rollers 21, a belt 22 and a first motor 23. The multiple rollers 21 are installed on the workbench 11, the belt 22 is installed on the rollers 21, the first motor 23 is installed on the side end of the workbench 11, and the output end of the first motor 23 is connected to one of the rollers 21.

[0026] The positioning mechanism 03 includes a rotating shaft 31, a second motor 32 and two groups of sliders 33. The rotating shaft 31 is installed at the bottom end of the workbench 11, the second motor 32 is installed on the rotating shaft 31, one end of the two groups of sliders 33 is respectively installed at the two ends of the rotating shaft 31, and the other end is slidably installed on the workbench 11, and the two groups of sliders 33 are both provided with pins that just match the slots on the workbench 11.

[0027] The vacuum system 04 includes a vacuum pump 41, an exhaust pipe 42 and a valve 43. The vacuum pump 41 is installed on the top of the workbench 11. One end of the exhaust pipe 42 is connected to the output end of the vacuum pump 41, and the other end is connected to the Dewar flask through the valve 43.

[0028] The helium device 05 includes a helium bottle 51 and a helium discharge pipe 52. The helium bottle 51 is installed on the top of the workbench 11. One end of the helium discharge pipe 52 is connected to the outlet of the helium bottle 51, and the other end sprays helium to the Dewar flask.

[0029] The detection device 06 includes a detector 61 and a detector 62. The detector 61 is installed on the top of the workbench 11. One end of the detector 62 is connected to the detector 61, and the other end performs airtightness detection on the Dewar flask.

[0030] like Figures 1 to 4 As shown, when the utility model is working, the first motor 23 is started to rotate the rotating shaft 31 to drive the belt 22 to transport the Dewar flask to the specified position, the second motor 32 is started to rotate the rotating shaft 31 to drive the slider 33 to move on the workbench 11, the Dewar flask is limited and fixed to prevent movement during the detection process, the vacuum pump 41 is started to evacuate the Dewar flask through the exhaust pipe 42, the helium bottle 51 is started to spray helium to the Dewar flask through the helium exhaust pipe 52, and the detector 61 is observed to see if there is any change, thereby achieving the detection effect.

[0031] The first motor 23 and the second motor 32 of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for technicians in the field to make creative efforts.

Claims

1. A Dewar flask air tightness detection device, comprising a fixing mechanism (01); characterized in that: The invention also comprises a conveying mechanism (02), a positioning mechanism (03), a vacuum system (04), a helium device (05) and a detection device (06). The conveying mechanism (02) is installed on the fixing mechanism (01) to convey the Dewar flask, the positioning mechanism (03) is slidably installed on the fixing mechanism (01) to fix the Dewar flask, the vacuum system (04) is installed on the fixing mechanism (01) to evacuate the vacuum, the helium device (05) is installed on the fixing mechanism (01) to pass helium, and the detection device (06) is installed on the fixing mechanism (01) to detect the airtightness of the Dewar flask.

2. A dewar flask air tightness detection device according to claim 1, characterized in that: The fixing mechanism (01) comprises a workbench (11) and a support frame (12); the workbench (11) is fixedly mounted on the top of the support frame (12), and a positioning groove is arranged on the workbench (11).

3. A dewar flask air tightness detection device according to claim 2, characterized in that: The conveying mechanism (02) comprises a plurality of rollers (21), a belt (22) and a first motor (23); the plurality of rollers (21) are mounted on a workbench (11); the belt (22) is mounted on the rollers (21); the first motor (23) is mounted on a side end of the workbench (11); and an output end of the first motor (23) is connected to one of the rollers (21).

4. A dewar flask air tightness detection device according to claim 2, characterized in that: The positioning mechanism (03) comprises a rotating shaft (31), a second motor (32) and two groups of sliders (33), wherein the rotating shaft (31) is mounted at the bottom end of the workbench (11), the second motor (32) is mounted on the rotating shaft (31), one end of the two groups of sliders (33) are respectively mounted at the two ends of the rotating shaft (31), and the other end is slidably mounted on the workbench (11), and the two groups of sliders (33) are both provided with pins that exactly match the notches on the workbench (11).

5. A dewar flask air tightness detection device according to claim 2, characterized in that: The vacuum system (04) includes a vacuum pump (41), an exhaust pipe (42) and a valve (43). The vacuum pump (41) is installed on the top of the workbench (11). One end of the exhaust pipe (42) is connected to the output end of the vacuum pump (41), and the other end is connected to the Dewar flask through the valve (43).

6. A dewar flask air tightness detection device according to claim 2, characterized in that: The helium device (05) comprises a helium bottle (51) and a helium discharge pipe (52). The helium bottle (51) is installed on the top of the workbench (11). One end of the helium discharge pipe (52) is connected to the outlet of the helium bottle (51), and the other end sprays helium to the Dewar flask.

7. A dewar flask air tightness detection device according to claim 2, characterized in that: The detection device (06) comprises a detector (61) and a detector (62). The detector (61) is installed on the top of the workbench (11). One end of the detector (62) is connected to the detector (61), and the other end performs airtightness detection on the Dewar flask.

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