Shielding sleeve leak detection device

Abstract

The utility model belongs to the technical field of motor part production, and relates to a shielding sleeve leak detection device, which comprises an upper leak detection assembly and a lower leak detection assembly which are oppositely arranged, the upper leak detection assembly comprises an upper sealing seat driven by a cylinder, and an upper plug with the bottom exceeding the lower end face of the upper sealing seat is arranged in the upper sealing seat; the lower leak detection assembly comprises an air inlet sealing base, an air inlet nozzle, a positioning ring and a sealing gasket are sequentially arranged in the air inlet sealing base, the air inlet nozzle is connected with an air source, the positioning ring is matched with the inner wall of a shielding sleeve to be subjected to leak detection, and the air cylinder drives the upper sealing base to move downwards and press the shielding sleeve. The upper plug and the sealing gasket form a sealing structure at the two ends of the shielding sleeve, and the air inlet nozzle is communicated with an inner cavity of the shielding sleeve. The shielding sleeve leak detection device provided by the utility model can improve the automation degree and leak detection efficiency of shielding sleeve leak detection.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of motor parts production relates to a shielding sleeve leak detection device. BACKGROUND

[0002] Shielding sleeve is a kind of common parts of motor, shielding sleeve sheet and weld quality directly influence the sealing performance of shielding motor rotor and stator, usually after shielding sleeve ring seam welding, the internal airtight negative pressure vacuum method helium mass spectrum leak detection is ensured its sealing property.Therefore, it is necessary to develop a kind of special equipment for detecting the sealing property of shielding sleeve.

[0003] Chinese utility model patent CN 212871649 U positive pressure method helium mass spectrometer suction gun technology leak detection device of shielding sleeve, including nuclear main pump shielding motor shielding sleeve, sealing structure, leak detection bolt, connecting pipeline, helium gas pressure device, high-pressure helium gas on the inflation side, sealing element monitoring pressure gauge, shielding motor shielding sleeve two ends are respectively with the upper plug head cover plate and lower plug head cover plate of sealing structure fastening seal;Sealing structure's upper plug head cover plate center threaded hole connects leak detection bolt, leak detection bolt screw thread root adopts rubber ring seal, leak detection bolt inflation side is connected with inflation connecting pipeline in the form of screw thread;Inflation connecting pipeline is connected with helium gas pressure device, the primary pressure reducing valve in helium gas pressure device, secondary pressure reducing valve, primary filter, secondary filter are sequentially sealed connection, stop valve is installed on the pipeline of secondary filter, pressure gauge is installed between stop valve and inflation connecting pipeline;Sealing element monitoring pressure gauge is installed on the lower plug head cover plate of sealing structure.

[0004] The above-mentioned device can be used for the special detection of the sealing property of shielding sleeve, but its degree of automation is not high, and the operation is complicated, and the detection efficiency is not high. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of shielding sleeve leak detection device, can improve the degree of automation and leak detection efficiency of shielding sleeve leak detection for the deficiency of prior art.

[0006] To solve the above technical problems, the utility model realizes the purpose by the following technical schemes:

[0007] A kind of shielding sleeve leak detection device, including the upper leak detection component and lower leak detection component of relative arrangement, the upper leak detection component includes the upper sealing seat of pneumatic cylinder drive, the upper sealing seat is provided with the upper plug head of bottom exceeding its lower end face;The lower leak detection component includes intake seal base, intake seal base is sequentially provided with intake nozzle, positioning ring and sealing pad, intake nozzle is connected with gas source, the inner wall of the shielding sleeve to be leaked is adapted with positioning ring, the pneumatic cylinder drive upper sealing seat moves downward and tightens shielding sleeve, the upper plug head and sealing pad form the sealing structure of shielding sleeve two ends, intake nozzle is connected with shielding sleeve inner cavity.

[0008] In the shielding sleeve leak detection device, the upper sealing seat, the upper plug, the air inlet sealing base, the air inlet nozzle, the positioning ring and the sealing gasket are coaxially arranged, and further, the air cylinder and the air cylinder piston are coaxially arranged.

[0009] In the shielding sleeve leak detection device, the air inlet sealing base is provided with a coaxial boss, the boss and the side wall of the air inlet sealing base form a mounting cavity of the sealing gasket, and the positioning ring is sleeved outside the air inlet nozzle and fixedly connected with the boss.

[0010] In the shielding sleeve leak detection device, the upper leak detection assembly is arranged above the base, and the lower leak detection assembly is fixed on the base.

[0011] In the shielding sleeve leak detection device, further, the base is provided with a mounting plate through a support column, the air cylinder is fixed above the mounting plate, the mounting plate is provided with a through hole through which the piston of the air cylinder passes, and the upper sealing seat is located below the mounting plate and is fixedly connected with the piston of the air cylinder.

[0012] In the shielding sleeve leak detection device, the base is provided with a plurality of stations, and each station is provided with a pair of upper leak detection assemblies and lower leak detection assemblies.

[0013] In the shielding sleeve leak detection device, the stations are distributed in the transverse direction, the upper leak detection assemblies are arranged on the mounting plate in the transverse direction, and the lower leak detection assemblies are arranged on the base in the transverse direction.

[0014] In the shielding sleeve leak detection device, the mounting plate is provided with an air cylinder control button, the start and stop and the up and down movement of the air cylinder can be controlled through the air cylinder control button, the base is provided with a gas source control button, the input state of the gas source can be controlled through the gas source control button, and one side of the base is provided with an electric control box for controlling electrical elements.

[0015] Compared with the prior art, the shielding sleeve leak detection device has the following beneficial effects:

[0016] 1. The shielding sleeve leak detection device is provided, the upper leak detection assembly driven by the air cylinder and the fixed lower leak detection assembly cooperate to fix and seal the upper and lower end portions of the shielding sleeve, the air inlet nozzle is used to inject gas into the inner cavity of the shielding sleeve, and the sealing property of the shielding sleeve can be detected according to the pressure condition.

[0017] 2、The utility model discloses can set up multiple stations on the same base, and each station can arrange an upper leak detection assembly and a lower leak detection assembly, thereby simultaneously detecting multiple shield sleeves and further improving the detection efficiency of the shield sleeve.

[0018] 3、The utility model discloses the structure of upper leak detection assembly and lower leak detection assembly is improved, and the upper leak detection assembly is formed through upper seal seat and upper plug, and the lower leak detection assembly is formed through air inlet seal base, air inlet nozzle, positioning ring and sealing pad, can form the structure of positioning, sealing and air intake simultaneously, has simple structure, convenient and fast advantage of operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the perspective drawing of the utility model;

[0020] Figure 2 It is the perspective drawing of the upper leak detection assembly of the utility model;

[0021] Figure 3 It is the perspective drawing of the lower leak detection assembly of the utility model;

[0022] Figure 4 It is Figure 3 the explosion diagram;

[0023] Fig. 1, upper leak detection assembly;11, air cylinder;12, upper seal seat;13, upper plug;2, lower leak detection assembly;21, air inlet seal base;22, air inlet nozzle;23, positioning ring;24, sealing pad;25, boss;3, base;31, support column;32, mounting plate;33, air cylinder control button;34, gas source control button;35, electric control box. DETAILED DESCRIPTION

[0024] The utility model will be further described in conjunction with the specific embodiment of the drawings, refer to Figures 1-4 :

[0025] A shield sleeve leak detection device, including the upper leak detection assembly 1 and lower leak detection assembly 2 of opposite arrangement, the upper leak detection assembly 1 includes the upper seal seat 12 of air cylinder 11 drive, the upper seal seat 12 is provided with the upper plug 13 of bottom beyond its lower end surface;The lower leak detection assembly 2 includes air inlet seal base 21, and air inlet seal base 21 is sequentially provided with air inlet nozzle 22, positioning ring 23 and sealing pad 24, air inlet nozzle 22 is connected with gas source, positioning ring 23 is adapted to the inner wall of the shield sleeve to be detected leakage, the air cylinder 11 drive upper seal seat 12 moves down and tightens shield sleeve, the upper plug 13 and sealing pad 24 form the sealing structure of shield sleeve both ends, and air inlet nozzle 22 is connected with shield sleeve inner chamber.

[0026] Compare the attached Figure 2 to attached Figure 4The working mode of the embodiment is as follows: the bottom of the shielding sleeve to be detected for leakage is placed on the positioning ring 23, and then the air cylinder 11 is started, the air cylinder 11 drives the upper sealing seat 12 and the upper plug 13 to move downward to a predetermined position, the upper plug 13 contacts the top of the shielding sleeve and presses the shielding sleeve, after being pressed, the upper plug 13 is in sealing connection with the top of the shielding sleeve, the sealing gasket 24 is in sealing connection with the bottom of the shielding sleeve, the inner cavity of the shielding sleeve forms a sealed cavity body in communication with the air inlet nozzle 22 only, the air source is connected, the gas is transported into the shielding sleeve, and then the pressure state is observed, so that whether the gas in the shielding sleeve leaks or not can be determined, and the sealing property of the shielding sleeve can be detected.

[0027] In the embodiment, the upper sealing seat 12, the upper plug 13, the air inlet sealing base 21, the air inlet nozzle 22, the positioning ring 23 and the sealing gasket 24 are coaxially arranged, and further, the air cylinder 11 and the piston of the air cylinder 11 are coaxially arranged.

[0028] Referring to Figs. 1 and 2, Figure 3 and Figs. 3 and 4, Figure 4 the air inlet sealing base 21 is provided with a coaxial boss 25, a mounting cavity of the sealing gasket 24 is formed between the boss 25 and the side wall of the air inlet sealing base 21, and the positioning ring 23 is sleeved outside the air inlet nozzle 22 and fixedly connected with the boss 25; preferably, the air inlet sealing base 21, the boss 25 and the air inlet nozzle 22 are integrally formed; through the above structure, the positioning, sealing and air inlet connection of the shielding sleeve can be simultaneously realized.

[0029] Referring to Figs. 1 and 2, Figure 1 in the embodiment, the mounting structure of the upper leakage detection assembly 1 and the lower leakage detection assembly 2 is that the upper leakage detection assembly 1 is arranged above the machine base 3, and the lower leakage detection assembly 2 is fixed on the machine base 3.

[0030] Further, the machine base 3 is provided with a mounting plate 32 through a support column 31, the air cylinder 11 is fixed above the mounting plate 32, the mounting plate 32 is provided with a through hole through which the piston of the air cylinder 11 passes, and the upper sealing seat 12 is located below the mounting plate 32 and fixedly connected with the piston of the air cylinder 11; the machine base 3 is provided with an air inlet through hole corresponding to the air inlet nozzle 22, and the air inlet connector of the air source passes through the air inlet through hole to be connected with the air inlet nozzle 22, or the air inlet nozzle 22 passes through the air inlet through hole to be connected with the air inlet connector of the air source.

[0031] In order to further improve the leakage detection efficiency, the machine base 3 is provided with multiple groups of workstations, each group of workstations is provided with the upper leakage detection assembly 1 and the lower leakage detection assembly 2 in pairs, and multiple groups of workstations can work simultaneously, so that multiple shielding sleeves can be detected for leakage simultaneously.

[0032] In order to facilitate operation of the device of multiple stations, the stations are distributed along the transverse direction, the upper leak detection assembly 1 is arranged on the mounting plate 32 along the transverse direction, and the lower leak detection assembly 2 is arranged on the base 3 along the transverse direction.

[0033] The control structure of the embodiment is that the mounting plate 32 is provided with a cylinder control button 33, the cylinder control button 33 can control the start and stop and up and down movement of the cylinder 11, the base 3 is provided with a gas source control button 34, the gas source control button 34 can control the input state of the gas source, and the base 3 is provided with an electric control box 35 on one side, which is used for controlling electrical elements.

[0034] In the embodiment, the gas source is a common gas source used for leak detection in the art, and the pressure gauge is arranged in a conventional manner. The above embodiment is only a preferred embodiment of the utility model, and does not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. A shielded sleeve leak detection apparatus, characterized by, The utility model provides a leak detection device, which comprises oppositely arranged upper leak detection assembly (1) and lower leak detection assembly (2), wherein the upper leak detection assembly (1) comprises a cylinder (11) driven upper sealing seat (12), and an upper plug (13) is arranged in the upper sealing seat (12) and protrudes from the lower end face of the upper sealing seat (12); the lower leak detection assembly (2) comprises an air inlet sealing base (21), and the air inlet sealing base (21) is sequentially provided with an air inlet nozzle (22), a positioning ring (23) and a sealing gasket (24); the air inlet nozzle (22) is connected with an air source; the positioning ring (23) is adapted to the inner wall of a shield sleeve to be detected; the cylinder (11) drives the upper sealing seat (12) to move downward and press the shield sleeve; the upper plug (13) and the sealing gasket (24) form a sealing structure at the two ends of the shield sleeve; and the air inlet nozzle (22) is in communication with the inner cavity of the shield sleeve.

2. A leak detection apparatus according to claim 1, wherein, The upper sealing seat (12), the upper plug (13), the air inlet sealing base (21), the air inlet nozzle (22), the positioning ring (23) and the sealing gasket (24) are coaxially arranged.

3. A leak detection apparatus for a shielded enclosure as defined in claim 1 wherein, The air inlet sealing base (21) is provided with a coaxial boss (25), and the boss (25) and the side wall of the air inlet sealing base (21) form an installation cavity of the sealing gasket (24); and the positioning ring (23) is sleeved outside the air inlet nozzle (22) and fixedly connected with the boss (25).

4. The shielded sleeve leak detection apparatus of claim 1, wherein, The upper leak detection assembly (1) is arranged above a machine base, and the lower leak detection assembly (2) is fixed on the machine base (3).

5. A leak detection apparatus according to claim 4, wherein the shield sleeve is formed from a material having a high electrical conductivity. The machine base (3) is provided with a mounting plate (32) through a support column (31); the cylinder (11) is fixed above the mounting plate (32); the mounting plate (32) is provided with a through hole through which a piston of the cylinder (11) passes; the upper sealing seat (12) is located below the mounting plate (32) and is fixedly connected with the piston of the cylinder (11); and the machine base (3) is provided with an air inlet through hole corresponding to the air inlet nozzle (22).

6. A leak detection apparatus according to claim 5, wherein, The machine base (3) is provided with a plurality of groups of work stations, and each group of work stations is provided with the upper leak detection assembly (1) and the lower leak detection assembly (2) in pairs.

7. A leak detection apparatus according to claim 6, wherein, The work stations are distributed along the transverse direction; the upper leak detection assemblies (1) are arranged on the mounting plate (32) along the transverse direction at intervals; and the lower leak detection assemblies (2) are arranged on the machine base (3) along the transverse direction at intervals.

8. A leak detection apparatus according to claim 5, wherein, The mounting plate (32) is provided with a cylinder control button (33); the machine base (3) is provided with an air source control button (34); and one side of the machine base (3) is provided with an electric control box (35).

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