CN115290266A - Air tightness detection device for mechanical electrical equipment - Google Patents

Abstract

The invention discloses an air tightness detection device for mechanical and electrical equipment, comprising a base and an electrical equipment body, a detection chamber is fixedly installed on the top of the base, and a support seat for placing the electrical equipment body is fixedly arranged inside the detection chamber. The top of the detection chamber is detachably provided with a cover plate, the cover plate is used to seal the electrical equipment body in the detection chamber, and the interior of the detection chamber can be directly observed through the cover plate, and an air intake pipe is arranged on the electrical equipment body; The top of the base is also provided with a vacuum pump, a nitric oxide generating mechanism and an oxygen generating mechanism. The external ports of the vacuum pump and the oxygen generating mechanism are all communicated with the interior of the detection chamber, and the external port of the nitric oxide generating mechanism penetrates the side wall of the detection chamber and The air intake pipe is connected; the above device can conveniently and intuitively detect the air tightness of the electrical equipment body, effectively avoid accidents, and improve the detection accuracy.

Description

An air tightness detection device for mechanical and electrical equipment

technical field

The invention relates to the technical field of mechanical and electrical equipment, in particular to an air tightness detection device for mechanical and electrical equipment.

Background technique

In existing mechanical and electrical equipment, such as waterproof stepping motors, DC brushless motors, servo motors, submersible motors, etc., air tightness is an important basis for the performance of the motor. In conventional methods, in order to check its air tightness Air tightness, we fill the motor with an air pressure of 1.8MPa, then put it into the water to see if there are air bubbles, and judge whether it is leaking. By observing whether there are air bubbles, we can judge whether the airtightness of the shaft end is good, or to check whether there are air bubbles in the motor. The air pressure is tested by compressing and inflating, and the air tightness of the motor can be judged by the reduction of the air pressure; however, there are often air bubbles attached to the surface of the front cover, and the testing workers will mistakenly think that there are no air bubbles, so that the air tightness judgment is wrong, which is more unexpected , it is difficult to accurately detect the degree of air tightness.

Contents of the invention

The purpose of the present invention is to provide an airtightness detection device for mechanical and electrical equipment, which can conveniently and intuitively detect the airtightness of mechanical and electrical equipment, and can effectively avoid accidents during the detection process and improve the accuracy of detection property, and effectively solve the problems mentioned in the background technology.

The purpose of the present invention can be achieved through the following technical solutions:

An air tightness detection device for mechanical and electrical equipment, comprising a base and an electrical equipment body, a detection chamber is fixedly installed on the top of the base, a support base for placing the electrical equipment body is fixed inside the detection chamber, and the top of the detection chamber can be The disassembled part is provided with a cover plate, which is used to seal the electrical equipment body in the detection chamber, and the inside of the detection chamber can be directly observed through the cover plate. The electrical equipment body is provided with an air intake pipe; the top of the base is also provided with a There are a vacuum pump, a nitric oxide generating mechanism and an oxygen generating mechanism. The external ports of the vacuum pump and the oxygen generating mechanism are connected with the inside of the detection chamber, and the external port of the nitric oxide generating mechanism passes through the side wall of the detection chamber and communicates with the intake pipe.

As a further solution of the present invention: the external port of the vacuum pump is connected to the air guide tube 1, the end of the air guide tube 1 away from the vacuum pump communicates with the inside of the detection chamber, and the air guide tube 1 is provided with an electric valve 1.

As a further solution of the present invention: the oxygen generating mechanism is an oxygen tank, the external port of the oxygen tank is connected to the air guide tube 2, the air guide tube 2 is equipped with an electric valve 2, and the end of the air guide tube 2 far away from the oxygen tank communicates with the inside of the detection chamber.

As a further solution of the present invention: the nitric oxide generating mechanism is a nitric oxide tank, the external port of the nitric oxide tank is connected to the air guide tube three, the air guide tube three is equipped with an electric valve three, and the air guide tube three is far away from the nitric oxide tank One end of one end communicates with the inside of the detection chamber, and a connecting piece is detachably connected between the air guide tube three and the intake tube.

As a further solution of the present invention: the connecting piece includes an elastic rubber tube, a sealing groove and an elastic locking ring, the elastic locking ring matches the sealing groove, the sealing groove is set on the outer peripheral side of the air intake pipe and the air guide pipe three, and the elastic rubber The diameter of the tube and the elastic locking ring is smaller than the inner diameter of the intake pipe and the air guide tube 3, the elastic rubber tube is used to wrap the outer circumference of the sealing groove, and the elastic locking ring is used to wrap the outer circumference of the elastic rubber tube and snap into the sealing groove.

As a further solution of the present invention: the support seat includes a downwardly curved arc plate, supporting legs are respectively provided at the four corners and the center of the bottom of the arc plate, and several through holes are opened on the arc plate.

As a further solution of the present invention: the cover plate includes a frame and a tempered glass plate, the frame is sealed and wrapped around the outer peripheral side of the tempered glass plate, a slot is provided at the bottom of the frame, and the cover plate is engaged on the top of the detection chamber through the slot.

As a further solution of the present invention: the top of the base is also provided with a control panel.

Beneficial effects of the present invention:

The airtightness of the electrical equipment body can be detected by filling nitric oxide into the body of the electrical equipment to be tested and filling oxygen into the detection chamber, and observing whether brown-red gas is generated in the sealed detection chamber. If the airtightness of the electrical equipment is qualified, the nitric oxide in the electrical equipment body will not overflow into the detection chamber, and brown-red gas will not be generated in the detection chamber, so that the airtightness of the electrical equipment body can be detected conveniently and intuitively, effectively avoiding accidents occur, improving the accuracy of detection.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic top view of the overall structure of the present invention;

Fig. 2 is a schematic front view of the overall structure of the present invention;

Fig. 3 is a schematic exploded view of the connecting member structure of the present invention;

Fig. 4 is a schematic cross-sectional view of the connecting member structure of the present invention;

Fig. 5 is a schematic diagram of the structure of the support base of the present invention.

In the figure: 1. Base; 2. Electrical equipment body; 3. Testing room; 4. Support seat; 5. Cover plate; 6. Intake pipe; 7. Vacuum pump; 8. Nitric oxide generating mechanism; 9. Oxygen generating mechanism ; 10, air guide tube one; 11, electric valve one; 12, air guide tube two; 13, electric valve two; 14, air guide tube three; 15, electric valve three; 16, connecting piece; 17, elastic rubber tube; 18, Sealing groove; 19, elastic locking ring; 20, arc-shaped plate; 21, supporting leg; 22, through hole; 23, frame; 24, tempered glass plate; 25, card slot; 26, control panel.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to Fig. 1-5, a kind of airtightness detection device for mechanical and electrical equipment is used to detect the airtightness of mechanical and electrical equipment, especially for small electrical equipment such as motors; it includes a base 1 and an electrical equipment body 2, A detection chamber 3 and a control panel 26 are fixedly installed on the top of the base 1, a support seat 4 for placing the electrical equipment body 2 is fixed inside the detection chamber 3, and a cover plate 5 is detachably provided on the top of the detection chamber 3, and the cover plate 5 is used for The electrical equipment body 2 is sealed in the detection chamber 3, and the interior of the detection chamber 3 can be directly observed through the cover plate 5. The electrical equipment body 2 is provided with an air intake pipe 6, and the air intake pipe 6 is pre-installed on the electrical equipment body 2 On, the intake pipe 6 communicates with the inside of the electrical equipment body 2;

The top of the base 1 is also provided with a vacuum pump 7, a nitric oxide generating mechanism 8 and an oxygen generating mechanism 9, the external ports of the vacuum pump 7 and the oxygen generating mechanism 9 are all connected with the detection chamber 3, and the external ports of the nitric oxide generating mechanism 8 It passes through the side wall of the detection chamber 3 and communicates with the intake pipe 6 .

Wherein, the external port of the vacuum pump 7 is connected to the air guide tube-10, and the end of the air guide tube-10 away from the vacuum pump 7 is connected to the inside of the detection chamber 3. The air guide tube-10 is provided with an electric valve-11, and the vacuum pump 7 and the electric valve-11 are connected to the control panel. 26 is electrically connected, the control panel 26 is used to control the start and stop of the vacuum pump 7 and the electric valve 11, and the vacuum pump 7 is used to evacuate the detection chamber 3 .

Wherein, the oxygen generating mechanism 9 is an oxygen tank, preferably a 40L\13MPa industrial oxygen tank, the external port of the oxygen tank is connected to the air guide tube 2 12, and the air guide tube 2 12 is equipped with an electric valve 2 13, and the air guide tube 2 12 is far away from one end of the oxygen tank It communicates with the inside of the detection chamber 3 so that the oxygen in the oxygen tank can enter the detection chamber 3 smoothly. The electric valve 2 13 is electrically connected with the control panel 26, and the control panel 26 is used to control the start and stop of the electric valve 2 13.

Among them, the nitric oxide generating mechanism 8 is a nitric oxide tank, preferably 8L\3.5MPa nitric oxide tank, the external port of the nitric oxide tank is connected to the air guide tube 3 14, and the electric valve 3 15 is installed on the air guide tube 3 14, and the guide The end of the trachea three 14 away from the nitric oxide tank communicates with the inside of the detection chamber 3, and the detachably connected connecting piece 16 is connected between the airway three 14 inside the detection chamber 3 and the intake pipe 6, and the connecting piece 16 communicates with the airway three 14 and The intake pipe 6 makes the nitric oxide in the nitric oxide tank enter the electrical equipment body 2 through the air guide tube 3 14, the connecting piece 16 and the intake pipe 6, and the amount of nitric oxide charged is determined according to the size of the internal space of the electrical equipment body 2 , it is advisable for the air pressure to reach about 1.8MPa. The connecting piece 16 can be set so that the air duct 3 14 can be connected with the intake pipe 6 of different heights, so as to meet the air tightness detection of the main body 2 of different types of electrical equipment. The electric valve 3 15 and the control The panel 26 is electrically connected, and the control panel 26 is used to control the start and stop of the electric valve 3 15 .

When specifically testing the airtightness of the electrical equipment body 2, the electrical equipment body 2 is placed on the support base 4, and the air intake pipe 6 on the electrical equipment body 2 is connected to the air duct 3 inside the detection chamber 3 through the connecting piece 16. 14 connected, and then the cover plate 5 is sealed and closed on the top of the detection chamber 3, and the electric valve 11 and the vacuum pump 7 are sequentially opened through the control panel 26 to vacuumize the detection chamber 3, and then the vacuum pump 7 and the electric valve 1 are closed in sequence after vacuuming 11; Open the electric valve two 13, the oxygen in the oxygen tank is charged into the detection chamber 3 through the air duct two 12, and close the electric valve two 13 after the oxygenation is completed; open the electric valve three 15, the nitric oxide in the nitric oxide tank Pass through the air guide pipe three 14, the connecting piece 16 and the air intake pipe 6 in turn and rush into the electrical equipment body 2.

Observe whether brown-red gas is produced inside the detection chamber 3 through the cover plate 5. If the airtightness of the electrical equipment body 2 is not up to standard, the nitric oxide in the electrical equipment body 2 will overflow into the detection chamber 3, and the overflowing nitric oxide Nitrogen combines with oxygen in the detection chamber 3 to form brown-red nitrogen dioxide. If the airtightness of the electrical equipment body 2 is qualified, the nitric oxide in the electrical equipment body 2 will not overflow into the detection chamber 3, and the detection chamber 3 No brown-red gas will be generated inside, so that the airtightness of the electrical equipment body 2 can be detected conveniently and intuitively, effectively avoiding accidents and improving the accuracy of detection.

Preferably, in this embodiment, the connecting member 16 specifically includes an elastic rubber tube 17, a sealing groove 18, and an elastic locking ring 19, the elastic locking ring 19 matches the sealing groove 18, and the sealing groove 18 is opened in the air intake pipe 6 and the detection On the outer peripheral side of the air guide tube 3 14 in the chamber 3, the diameter of the elastic rubber tube 17 and the elastic locking ring 19 are smaller than the inner diameter of the air intake tube 6, so that the elastic rubber tube 17 can be closely attached to the outer circumference of the air intake tube 6 and the air guide tube 3 14. One end of the tube 17 communicates with the air guide tube 3 14, and the other end communicates with the intake tube 6. The elastic rubber tube 17 is used to wrap around the outer circumference of the sealing groove 18, and the elastic locking ring 19 is used to wrap around the outer circumference of the elastic rubber tube 17 and engage in the sealing In the groove 18, the elastic rubber tube 17 is sealed and connected between the air guide tube three 14 and the intake tube 6, so as to avoid nitric oxide from leaking from the pipeline connection and affect the accuracy of detection.

Preferably, the support base 4 includes a downwardly curved arc-shaped plate 20, the four corners and the center of the bottom of the arc-shaped plate 20 are respectively provided with support legs 21, and several through holes 22 are provided on the arc-shaped plate 20, so that the electrical equipment body 2 and the arc-shaped plate The contact area of 20 is reduced as much as possible to prevent the arc-shaped plate 20 from blocking the possible unqualified seal on the electrical equipment body 2, so that nitric oxide does not overflow from the unqualified seal, resulting in inaccurate detection.

Preferably, the cover plate 5 includes a frame 23 and a tempered glass plate 24, the frame 23 is hermetically wrapped on the outer peripheral side of the tempered glass plate 24, the tempered glass plate 24 is embedded in the frame 23, and drips Sealant, to ensure the sealing of the joint between the tempered glass plate 24 and the frame 23, the bottom of the frame 23 is provided with a slot 25, and the inner wall of the slot 25 is pasted with a silicone gasket, when the cover plate 5 is engaged on the top of the detection chamber 3 through the slot 25 , the silicone gasket is squeezed and deformed to wrap on the top side of the detection chamber 3, so that the cover plate 5 is sealed and closed on the top of the detection chamber 3.

It should be noted that sealing gaskets can be provided at the joints of the first airway tube 10 , the second airway tube 12 and the third airway tube 14 and the detection chamber 3 to ensure the airtightness of the detection chamber 3 .

In addition, before testing the airtightness of the electrical equipment body 2, the airtightness of the airtightness testing device itself needs to be tested, and oxygen and nitric oxide can be injected into the testing chamber 3 to produce brown-red di Nitrogen oxide, just observe whether there is brown-red nitrogen dioxide overflowing from the detection chamber 3. If there is overflow, the airtightness of the detection chamber 3 itself is unqualified, and rectification is required until it is qualified.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience The description of the present invention and the simplified description do not indicate or imply that the device or element referred to must have a specific orientation, as well as a specific orientation configuration and operation, and therefore, should not be construed as limiting the invention. In addition, "first" and "second" are for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, the meanings of "plurality" and "several" are two or more.

An embodiment of the present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (8)

1. The air tightness detection device for the mechanical electrical equipment comprises a base (1) and an electrical equipment body (2), and is characterized in that a detection chamber (3) is fixedly installed at the top of the base (1), a supporting seat (4) used for placing the electrical equipment body (2) is fixedly arranged in the detection chamber (3), a cover plate (5) is detachably arranged at the top of the detection chamber (3), the cover plate (5) is used for sealing the electrical equipment body (2) in the detection chamber (3), the interior of the detection chamber (3) can be directly observed through the cover plate (5), and an air inlet pipe (6) is arranged on the electrical equipment body (2);

base (1) top still is provided with vacuum pump (7), nitric oxide and takes place mechanism (8) and oxygen and take place mechanism (9), the external port that vacuum pump (7) and oxygen take place mechanism (9) all with detect the inside intercommunication of room (3), the external port that nitric oxide takes place mechanism (8) runs through and detects room (3) lateral wall and intake pipe (6) intercommunication.

2. The airtightness detection device for the mechanical electrical equipment according to claim 1, wherein an external port of the vacuum pump (7) is connected with a first air duct (10), one end of the first air duct (10), which is far away from the vacuum pump (7), is communicated with the inside of the detection chamber (3), and a first electrically operated valve (11) is arranged on the first air duct (10).

3. The air tightness detection device for the mechanical electrical equipment as claimed in claim 2, wherein the oxygen generation mechanism (9) is an oxygen tank, an external port of the oxygen tank is connected with a second air duct (12), a second electrically operated valve (13) is installed on the second air duct (12), and one end of the second air duct (12) far away from the oxygen tank is communicated with the inside of the detection chamber (3).

4. The airtightness detection device for mechanical and electrical equipment according to claim 3, wherein the nitric oxide generation mechanism (8) is a nitric oxide tank, an external end opening of the nitric oxide tank is connected with a third air duct (14), a third electrically operated valve (15) is installed on the third air duct (14), one end, far away from the nitric oxide tank, of the third air duct (14) is communicated with the inside of the detection chamber (3), and a communication piece (16) is detachably connected between the third air duct (14) and the air inlet pipe (6).

5. The air tightness detecting device for the mechanical electrical equipment as claimed in claim 4, wherein the communicating member (16) comprises an elastic rubber tube (17), a sealing groove (18) and an elastic locking ring (19), the elastic locking ring (19) is matched with the sealing groove (18), the sealing groove (18) is arranged on the outer peripheral side of the air inlet tube (6) and the air guide tube III (14), the diameters of the elastic rubber tube (17) and the elastic locking ring (19) are smaller than the inner diameters of the air inlet tube (6) and the air guide tube III (14), the elastic rubber tube (17) is used for wrapping the outer periphery of the sealing groove (18), and the elastic locking ring (19) is used for wrapping the outer periphery of the elastic rubber tube (17) and is clamped in the sealing groove (18).

6. The airtightness detection apparatus for mechanical electrical equipment according to any one of claims 1 to 5, wherein the support base (4) comprises an arc-shaped plate (20) which is bent downward, four corners and a center of a bottom of the arc-shaped plate (20) are respectively provided with a support leg (21), and the arc-shaped plate (20) is provided with a plurality of through holes (22).

7. The airtightness detection apparatus for mechanical and electrical equipment according to claim 6, wherein the cover plate (5) includes a frame (23) and a tempered glass plate (24), the frame (23) is hermetically wrapped on an outer circumferential side of the tempered glass plate (24), a clamping groove (25) is formed in a bottom of the frame (23), and the cover plate (5) is clamped on a top of the detection chamber (3) through the clamping groove (25).

8. The air tightness detecting device for mechanical and electrical equipment as claimed in claim 7, wherein a control panel (26) is further provided on the top of said base (1).

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