CN215217942U

CN215217942U - Piston ring seal detection mechanism and leak detection machine

Info

Publication number: CN215217942U
Application number: CN202121547244.3U
Authority: CN
Inventors: 周坤
Original assignee: CHONGQING KUNEN ELECTROMECHANICAL TECHNOLOGY CO LTD
Current assignee: CHONGQING KUNEN ELECTROMECHANICAL TECHNOLOGY CO LTD
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-12-17
Anticipated expiration: 2031-07-08

Abstract

The utility model discloses a piston ring seals detection mechanism and leak hunting machine, its characterized in that: including vertical direction just to the subassembly that expands in the top of arranging and plugging device down, wherein the piston ring location place in on the plugging device down, the subassembly that expands in the top downwards in vertical elevating system's drive plugging device motion and compress tightly down plugging device makes the piston ring lower half form sealed cavity down, is filled into pressure gas in this sealed cavity and is used for detecting the gas tightness, the beneficial effects of the utility model include: the piston ring is convenient to take and place, the piston ring cannot be damaged by taking and placing, the air tightness detection efficiency is high, the equipment structure is simple, and the operation is convenient.

Description

Piston ring seal detection mechanism and leak detection machine

Technical Field

The utility model relates to an air tightness detection device field, concretely relates to piston ring seals detection mechanism and leak hunting machine.

Background

Since a Piston Ring (Piston Ring) is a metal Ring to be fitted into a Piston groove and has extremely high sealing performance, it is necessary to perform airtightness testing after the Piston Ring is manufactured. Piston ring gas tightness among the prior art detects machine adopts that the cavity is placed, and consequently the piston ring is got and is put very inconvenient when examining, influences detection efficiency, and gets to put and cause the damage to the piston ring easily, causes the disability rate height getting the piece.

Disclosure of Invention

To the weak point among the above-mentioned prior art, the utility model provides a piston ring seals detection mechanism, its simple structure, convenient operation, it is sealed effectual.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a piston ring seals detection mechanism which characterized in that: the piston ring sealing device comprises a top internal expansion assembly and a lower sealing device which are arranged in a right-facing mode in the vertical direction, a piston ring is placed on the lower sealing device in a positioning mode, the top internal expansion assembly moves towards the lower sealing device under the driving of a vertical lifting mechanism and tightly presses the lower sealing device to enable the lower half portion of the piston ring to form a sealed cavity, pressure gas is filled into the sealed cavity to detect air tightness, a ring platform for supporting the piston ring is arranged on the lower sealing device, a first sealing ring for sealing the inner wall of the piston ring is arranged on the lower sealing device, a second sealing ring for sealing the outer wall of the piston ring is arranged on the top internal expansion assembly, and a third sealing ring is arranged on the contact end face of the top internal expansion assembly and the lower sealing device.

Further, lower plugging device includes work piece base, well internal expanding axle, the last tertiary stairstepping ring platform that has of work piece base, first sealing washer sets up on the first order ring platform from top to bottom, and the piston ring sets up on the second level ring platform, the third sealing washer sets up on the third level ring platform, work piece base has axial cylindrical cavity, well internal expanding axle activity set up in the cylindrical cavity, compress tightly on the well internal expanding axle the turn-ups of first sealing washer, cylindrical cavity bottom with be provided with first reset spring between the bottom of well internal expanding axle.

Furthermore, the top surface of the middle inner expansion shaft is also provided with a nylon guide cap for guiding and positioning a piston ring, and a cushion pad is arranged on the third-stage ring platform.

Further, the top inner expansion assembly comprises a top inner expansion core and a top outer sleeve, the top outer sleeve is arranged below the top inner expansion core through a limit pull rod in a vertical movable mode, a second reset spring is arranged between the top inner expansion core and the top outer sleeve, and a second sealing ring is arranged between the top inner expansion core and the top outer sleeve and used for achieving sealing between the top inner expansion core and the top outer sleeve and sealing between a piston ring outer wall and the top outer sleeve.

Furthermore, an inner pressure head used for jacking the middle inner expansion shaft is further arranged on the top inner expansion core, the inner pressure head is movably connected with the top inner expansion core within a vertical preset range, and an auxiliary spring is arranged between the top inner expansion core and the inner pressure head.

Furthermore, a plurality of elastic pressure heads distributed in an annular mode are further arranged on the top inner expansion core and used for vertically pressing the piston ring.

Further, the vertical lifting mechanism comprises a gantry type support, the lower plugging device is arranged on the lower portion of the gantry type support, a vertically movable main plugging frame is arranged on the upper portion of the gantry type support, the top internal expansion assembly is arranged on the main plugging frame, and a gas-liquid supercharging cylinder assembly for driving the main plugging frame to move up and down is arranged at the top of the gantry type support.

Furthermore, the upper part of the gantry type support is also provided with an upper plugging positioning bolt component for locking the main plugging frame.

The utility model discloses still aim at providing a piston ring seals leak hunting machine, including piston ring seal detection mechanism, its characterized in that: still include undercarriage subassembly, protective assembly, wherein piston ring seals detection mechanism set up in on the undercarriage subassembly, protective assembly covers and establishes piston ring seals detection mechanism top, protective assembly includes just to the operation window in piston ring seals detection mechanism the place ahead, and is provided with the light curtain in this operation window's the left and right sides, and the top is provided with the light, protective assembly front portion still inlays and is equipped with operating panel, the protective assembly top is provided with the trichromatic lamp.

The beneficial effects of the utility model include: the piston ring is convenient to take and place, the piston ring cannot be damaged by taking and placing, the air tightness detection efficiency is high, the equipment structure is simple, and the operation is convenient.

Drawings

Fig. 1 is a schematic structural view of a sealing detection mechanism of the present invention;

fig. 2 is a schematic view of the internal structure of the sealing detection mechanism of the present invention;

fig. 3 is the structural schematic diagram of the leak detector of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

A piston ring leak detector, as shown in fig. 1-3, for detecting the tightness of a piston ring. The leak detector comprises a piston ring sealing detection mechanism for sealing a piston, and the piston ring sealing detection mechanism comprises an internal expansion component 1 and a lower plugging device 2 which are arranged oppositely in the vertical direction. The piston ring is positioned on the lower plugging device 2, the top internal expansion assembly 1 moves downwards under the driving of the vertical lifting mechanism 3, and the lower plugging device 2 is compressed, so that the lower half part of the piston ring forms a sealed cavity, and pressure gas is filled in the sealed cavity for detecting the air tightness. Wherein, be provided with the ring platform of support piston ring on the plugging device 2 down for place the piston ring, be provided with the first sealing washer 4 of sealed piston ring inner wall on the plugging device 2 down, be provided with the second sealing washer 5 of sealed piston ring outer wall on the subassembly 1 that expands in pushing up, the contact surface of subassembly 1 that expands in pushing up and plugging device 2 device down is provided with third sealing washer 6, forms foretell sealed cavity through three sealing washer.

As shown in fig. 2, the lower plugging device 2 includes a workpiece base 21 and a middle inner expansion shaft 22, a three-level stepped ring platform is provided on the workpiece base 21, a first seal ring 4 is arranged on the first-level ring platform from top to bottom, a piston ring is arranged on the second-level ring platform, and a third seal ring 6 is arranged on the third-level ring platform. The workpiece base 21 is provided with an axial cylindrical cavity, the middle inner expansion shaft 22 is movably arranged in the cylindrical cavity, and the middle inner expansion shaft 22 is tightly pressed on a flanging of the first sealing ring 4 and used for extruding the first sealing ring 4 to deform and expand to seal the inner wall of the piston ring under the condition that the middle inner expansion shaft 22 is stressed. A first return spring 23 is arranged between the bottom of the cylindrical cavity and the bottom of the middle inner expansion shaft 22, so that the middle inner expansion shaft 22 automatically rebounds under the condition of no pressure.

As shown in fig. 2, the top surface of the middle internal expanding shaft 22 is further provided with a nylon guide cap 24 for guiding and positioning a piston ring, the nylon guide cap 24 guides and positions the piston ring on the second stage ring platform, so that the guiding and positioning effects are achieved, the piston ring is scratched, the picking and placing speed is improved, and in addition, a cushion pad 25 is arranged on the third stage ring platform to avoid hard contact in the process of placing or pressing the piston ring.

As shown in fig. 2, the top internal expanding assembly 1 includes a top internal expanding core 11 and a top external envelope 12, the top external envelope 12 is vertically movably disposed below the top internal expanding core 11 through a limiting pull rod 13, and a second return spring 14 is disposed between the top internal expanding core 11 and the top external envelope 12. The second seal ring 5 is disposed between the top inner expansion core 11 and the top outer sleeve 12, and is used for sealing between the top inner expansion core 11 and the top outer sleeve 12 and sealing between the outer wall of the piston ring and the top outer sleeve 12. When the top inner expansion assembly 1 is pressed downwards, the top outer sleeve 12 is contacted with a third-stage ring table of the workpiece base 21 and presses the third sealing ring 6 to realize vertical sealing, the second return spring of the further top inner expansion core 11 and the top outer sleeve 12 is compressed, and the second sealing ring 5 is compressed, deformed and expanded to tightly seal the outer wall of the piston ring.

As shown in fig. 2, the top internal expanding core 11 is further provided with an internal pressure head 15 for pressing the middle internal expanding shaft 22, and the internal pressure head is used for pressing the middle internal expanding shaft 22. The inner pressure head 15 is movably connected with the top inner expansion core 11 in a vertical preset range, and an auxiliary spring 16 is arranged between the top inner expansion core 11 and the inner pressure head 15. When the auxiliary spring 16 is used for separating the top internal expansion assembly 1 upwards, the auxiliary spring 16 continuously acts on the middle internal expansion shaft 22, and a workpiece is prevented from being separated from a placing position along with the top internal expansion assembly 1.

In addition, a plurality of elastic pressure heads 17 distributed in an annular mode are further arranged on the top inner expansion core 11 and used for vertically pressing the piston ring, the elastic pressure heads 17 are used for avoiding scratching the piston ring, and after the piston ring is completely pressed, the pressing force of the elastic pressure heads 17 is larger than the pushing force of the inflation air pressure at the lower portion of the piston ring.

As shown in fig. 1, the vertical lifting mechanism 3 includes a gantry type support 31, the lower plugging device 2 is disposed at the lower portion of the gantry type support 31, a vertically movable main plugging frame 32 is disposed at the upper portion of the gantry type support 31, the top internal expansion assembly 1 is disposed on the main plugging frame 32, and a gas-liquid supercharging cylinder assembly 33 for driving the main plugging frame 32 to move up and down is disposed at the top of the gantry type support 31. The upper part of the gantry type bracket 31 is also provided with an upper plugging positioning bolt assembly 34 for locking the main plugging frame 32. Go up shutoff location bolt subassembly 34 including installing the cylinder in the planer-type support 31 outside, the piston rod front end of cylinder is connected with the downthehole bolt of inserting main shutoff frame 32 upper bolt, and accessible cylinder locks main shutoff frame 32 from this, places main shutoff frame 32 whereabouts when getting and put, causes danger.

As shown in fig. 3, the piston ring seal leakage detecting machine of the present embodiment, in addition to the piston ring seal detection mechanism, further includes a lower frame component 7 and a protection component 8, wherein the piston ring seal detection mechanism is disposed on the lower frame component 7, the protection component 8 is covered on the piston ring seal detection mechanism, the protection component 8 includes an operation window right facing the front of the piston ring seal detection mechanism, and light curtains 9 are disposed on the left and right sides of the operation window, a lighting lamp 10 is disposed above the operation window, an operation panel 20 is further embedded in the front of the protection component 8, and a tri-color lamp 30 is disposed on the top of the protection component 8. Meanwhile, the leak detector is also provided with a leak detector, a code scanning gun, an electric control cabinet and an air source assembly. A partition plate is arranged in front of the operation window and used for placing other materials when the time is zero.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a piston ring seals detection mechanism which characterized in that: comprises a top internal expansion component (1) and a lower plugging device (2) which are arranged oppositely in the vertical direction, wherein the piston ring is positioned and placed on the lower plugging device (2), the top internal expansion component (1) moves towards the lower plugging device (2) under the driving of the vertical lifting mechanism (3) and compresses the lower plugging device (2) to form a sealed cavity at the lower half part of the piston ring, the sealed cavity is filled with pressure gas for detecting the air tightness, the lower plugging device (2) is provided with a ring platform for supporting a piston ring, a first sealing ring (4) for sealing the inner wall of the piston ring is arranged on the lower plugging device (2), a second sealing ring (5) for sealing the outer wall of the piston ring is arranged on the top internal expansion component (1), and a third sealing ring (6) is arranged on the contact end surface of the top internal expansion assembly (1) and the lower plugging device (2).

2. A piston ring seal detection mechanism according to claim 1, wherein: lower plugging device (2) include work piece base (21), well interior bloated axle (22), the last tertiary stairstepping ring platform that has of work piece base (21), first sealing washer (4) set up at the first order ring bench from top to bottom, and the piston ring sets up at the second level ring bench, third sealing washer (6) set up at the third level ring bench, work piece base (21) have axial cylindrical cavity, well interior bloated axle (22) activity set up in the cylindrical cavity, compress tightly on well interior bloated axle (22) the turn-ups of first sealing washer (4), cylindrical cavity bottom with be provided with first reset spring (23) between the bottom of well interior bloated axle (22).

3. A piston ring seal detection mechanism according to claim 2, wherein: the top surface of the middle inner expanding shaft (22) is also provided with a nylon guide cap (24) for guiding and positioning a piston ring, and a cushion pad (25) is arranged on the third stage ring platform.

4. A piston ring seal detection mechanism according to claim 2, wherein: the top internal expansion assembly (1) comprises a top internal expansion core (11) and a top external envelope (12), the top external envelope (12) is arranged below the top internal expansion core (11) through a limit pull rod (13) in a vertical movable mode, a second reset spring (14) is arranged between the top internal expansion core (11) and the top external envelope (12), and a second sealing ring (5) is arranged between the top internal expansion core (11) and the top external envelope (12) and used for realizing sealing between the top internal expansion core (11) and the top external envelope (12) and sealing between a piston ring outer wall and the top external envelope (12).

5. The piston ring seal detection mechanism of claim 4, wherein: the top inner expansion core (11) is further provided with an inner pressure head (15) used for jacking the middle inner expansion shaft (22), the inner pressure head (15) is movably connected with the top inner expansion core (11) within a vertical preset range, and an auxiliary spring (16) is arranged between the top inner expansion core (11) and the inner pressure head (15).

6. The piston ring seal detection mechanism of claim 5, wherein: and a plurality of elastic pressure heads (17) which are distributed in an annular manner are also arranged on the top inner expansion core (11) and are used for vertically pressing the piston ring.

7. A piston ring seal detection mechanism according to claim 1, wherein: vertical elevating system (3) include portal type support (31), lower plugging device (2) set up in portal type support (31) lower part, portal type support (31) upper portion is provided with main shutoff frame (32) of vertical activity, top internal expanding subassembly (1) set up in on main shutoff frame (32), portal type support (31) top is provided with the drive main shutoff frame (32) elevating movement's gas-liquid supercharging cylinder subassembly (33).

8. The piston ring seal detection mechanism of claim 7, wherein: and an upper plugging positioning bolt component (34) for locking the main plugging frame (32) is further arranged at the upper part of the gantry type support (31).

9. A piston ring seal leak detector including a piston ring seal detection mechanism as claimed in any one of claims 1 to 8, wherein: still include undercarriage subassembly (7), protection component (8), wherein piston ring seal detection mechanism set up in on undercarriage subassembly (7), protection component (8) cover is established piston ring seal detection mechanism top, protection component (8) are including just to the operation window in piston ring seal detection mechanism the place ahead, and are provided with light curtain (9) in the left and right sides of this operation window, and the top is provided with light (10), protection component (8) front portion still inlays and is equipped with operating panel (20), protection component (8) top is provided with tristimulus lamp (30).