CN209894407U

CN209894407U - Metal differential pressure pipe airtightness test quick joint and airtightness test device

Info

Publication number: CN209894407U
Application number: CN201920829985.7U
Authority: CN
Inventors: 徐凯; 侯刚; 朱广飞
Original assignee: JIANGSU FULAISIBO AUTO PARTS MANUFACTURING Co Ltd
Current assignee: JIANGSU FULAISIBO AUTO PARTS MANUFACTURING Co Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-01-03
Anticipated expiration: 2029-06-03

Abstract

The utility model relates to an airtight test quick-operation joint of metal pressure differential pipe, reach the grafting subassembly with intake-tube connection including the intake pipe, the grafting subassembly includes the bayonet joint, lantern ring and inner core, the bayonet joint inner chamber is inserted to the intake pipe, round pocket hole has been seted up along outer circumference to the one end that the intake pipe was kept away from to the bayonet joint, the downthehole spacing steel ball that is provided with of pocket, the coaxial setting of inner core is in the bayonet joint, spring and intake pipe terminal surface elastic connection are passed through to inner core one end, the lantern ring cover is established outside the one end that the intake pipe was kept away from to the bayonet joint, be provided with the spring between lantern ring. This airtight test quick-operation joint of metal pressure differential pipe and airtight testing arrangement through the mutual elastic fit of bayonet joint, lantern ring and inner core, can be effectively with being surveyed the pipe fitting head fixed, peg graft quick accuracy, improved detection efficiency greatly, and multi-seal has guaranteed the detection precision to product quality has been guaranteed.

Description

Metal differential pressure pipe airtightness test quick joint and airtightness test device

The technical field is as follows:

the utility model relates to a pipeline detection technology field especially relates to a quick-operation joint and have this airtight test quick-operation joint's of metal pressure differential pipe airtight test airtight testing arrangement for airtight test of metal pressure differential pipe.

Background art:

some existing automobile pipelines need to be subjected to air tightness detection during machining, and the influence on subsequent use due to air leakage of the pipelines caused by machining errors is avoided. Particularly, for a metal differential pressure pipe, due to structural limitation, when the existing metal differential pressure pipe is used for detecting air tightness, the requirement on the tightness of a detection joint is high, so that the detection efficiency is low due to inconvenience in disassembly and assembly.

The utility model has the following contents:

the utility model aims at prior art's defect, provide a quick-operation joint and airtight testing arrangement that is used for airtight test of metal pressure differential pipe that the leakproofness is good, easy dismounting, can improve the detection precision.

The utility model discloses a realize through following technical scheme: the utility model provides an airtight test quick-operation joint of metal pressure differential pipe, includes intake pipe and the grafting subassembly of intake-tube connection, the grafting subassembly includes bayonet joint, the lantern ring and inner core, the bayonet joint inner chamber is gone into in the intake pipe grafting, the one end that the intake pipe was kept away from to the bayonet joint has seted up round pocket hole along outer circumference, the downthehole spacing steel ball that is provided with of pocket, the coaxial setting of inner core is in the bayonet joint, and inner core one end is passed through spring and intake pipe terminal surface elastic connection, and the inner core can be followed the bayonet joint inner chamber and slided, the lantern ring cover is established outside the one end that the intake pipe was kept away from to the bayonet joint, is provided with the spring between lantern ring inner chamber and the bayonet joint outer wall, and the lantern ring outer wall slides, lantern ring one end inner wall seted up.

In order to facilitate the disassembly and the assembly and the maintenance, the air inlet pipe is in threaded connection with the plug connector.

In order to ensure the tightness during detection, a sealing ring is arranged between the inner core and the inner cavity of the plug; one end of the inner core is provided with a jack corresponding to the end part of the pipe fitting to be detected, and the jack is internally provided with a sealing gasket; and a sealing ring is arranged between the plug connector and the lantern ring.

In order to avoid the spacing steel ball from deviating from the pocket hole and can smoothly enter the containing groove, the diameter of the pocket hole on the inner wall of the plug is smaller than that of the spacing steel ball, and the diameter of the pocket hole on the outer wall of the plug is larger than that of the spacing steel ball.

The utility model also provides an airtight testing arrangement of metal pressure differential pipe, including foretell airtight test quick-operation joint of metal pressure differential pipe, supporting mechanism, hold-down mechanism and accredited testing organization.

The utility model has the advantages that: this airtight test quick-operation joint of metal pressure differential pipe and airtight testing arrangement through the mutual elastic fit of bayonet joint, lantern ring and inner core, can be effectively with being surveyed the pipe fitting head fixed, peg graft quick accuracy, improved detection efficiency greatly, and multi-seal has guaranteed the detection precision to product quality has been guaranteed.

Description of the drawings:

fig. 1 is a schematic perspective view of the metal differential pressure tube airtightness testing quick coupling of the present invention;

FIG. 2 is a cross-sectional view of the metal differential pressure tube air tightness test quick coupling of the present invention;

fig. 3 is a schematic structural view of the metal differential pressure pipe airtightness testing apparatus of the present invention.

The specific implementation mode is as follows:

the following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.

As shown in fig. 1 and 2, the quick connector for testing the airtightness of the metal differential pressure pipe comprises an air inlet pipe 2 and a plug-in assembly connected with the air inlet pipe 2, wherein the plug-in assembly comprises a plug-in connector 3, a lantern ring 4 and an inner core 5 which are connected with each other.

An air inlet channel 21 is formed in the air inlet pipe 2, the left end of the air inlet pipe 2 is inserted into the inner cavity 31 at the right end of the plug-in connector 3, and the air inlet pipe 2 is in threaded connection with the plug-in connector 3. The left end of the connector 3 is provided with a circle of pocket hole 33 along the outer circumference, a limit steel ball 11 is arranged in the pocket hole 33, the opening diameter of the inner wall of the pocket hole 33 on the connector 3 is smaller than the diameter of the limit steel ball 11, the opening diameter of the outer wall of the pocket hole 33 on the connector 3 is larger than the diameter of the limit steel ball 11, namely, the pocket hole 33 is not a cylindrical through hole structure, but is a pocket hole structure for mounting a steel ball on a similar bearing retainer, the limit steel ball 11 can move inwards at the same time, but can not be separated from the pocket hole 33, and the limit steel ball 11 can move outwards at the same time, but can be separated from the pocket hole 33. The inner core 5 is coaxially arranged in the plug 3, the right end of the inner core 5 is elastically connected with the left end face of the air inlet pipe 2 through the spring 6, the inner core 5 can slide left and right along the inner cavity 32 of the plug 3, a through hole 51 communicated with the air inlet channel 21 of the air inlet pipe 2 is formed in the inner core 5, and the left end of the inner core is provided with a plug port connected with the end part of the pipe fitting 1 to be tested. The lantern ring 4 is sleeved outside the left end of the plug-in connector 3, a spring 7 is arranged between an inner cavity 41 of the lantern ring 4 and the outer wall of the left end of the plug-in connector 3, the lantern ring 4 can slide left and right along the outer wall of the plug-in connector 3, an extrusion groove 42 and an accommodating groove 43 which are matched with the limiting steel balls 11 are formed in the inner wall of the left end of the lantern ring 4, the extrusion groove 42 is communicated with the accommodating groove 43, the diameter of the accommodating groove 43 is larger than that of the extrusion groove 42, and the outer wall of the left end of the plug-in.

In order to guarantee the leakproofness of examining time measuring, the utility model discloses seal structure has been designed at each junction. For example, a sealing ring 8 is arranged between the inner core 5 and the inner cavity 32 of the plug 3; the left end of the inner core 5 is provided with an insertion hole corresponding to the right end of the pipe fitting 1 to be detected, and the insertion hole is internally provided with a sealing gasket 9; and a sealing ring 10 is arranged between the plug connector 3 and the lantern ring 4.

The device for testing the tightness of the metal differential pressure pipe shown in fig. 3 comprises the quick joint 13 for testing the tightness of the metal differential pressure pipe, a supporting mechanism 14, a pressing mechanism 15 and a testing mechanism 16, wherein the mechanisms are arranged on the working plate 12.

During the test, will await measuring the pipe fitting 1 left end and be connected with accredited testing organization 16, stimulate the lantern ring 4 right, spring 7 contracts, because spacing steel ball 11 no longer receives the extrusion of the 4 inner walls of lantern ring, then all spacing steel ball 11 outwards move gets into storage tank 43, the pipe fitting 1 that awaits measuring this moment can easily get into in the hole of bayonet joint 3 and insert in the spliced eye of inner core 5, and lean on with sealed 9 counterbalance, inner core 5 receives pressure, spring 6 contracts, the pipe fitting 1 inner chamber that awaits measuring this moment, the through-hole 51 of inner core 5 and the inlet channel 21 of intake pipe 2 are linked together. Loosening the lantern ring 4, the spring 7 moves leftwards to restore the original position due to the elastic action, at the moment, the limiting steel ball 11 is extruded by the inner wall of the lantern ring 4 and moves inwards at the same time, the outer wall of the pipe fitting 1 to be tested is extruded, and due to the thrust action of the spring 6, the inner core 5 also exerts a force on the pipe fitting 1 to be tested, and due to the protruding structure at the right end of the pipe fitting 1 to be tested, the pipe fitting 1 to be tested is limited and cannot move leftwards or rightwards, so that plugging is realized, and ventilation detection. After the detection is finished, the pipe fitting 1 to be detected can be easily pulled out only by pulling the lantern ring 4 rightwards.

The embodiment of the utility model provides an airtight testing arrangement of metal pressure differential pipe has the same technical characteristic with the airtight test quick-operation joint of metal pressure differential pipe that above-mentioned embodiment provided, so also can solve the same technical problem, reach the same technological effect.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an airtight test quick-operation joint of metal pressure differential pipe, includes intake pipe and with intake-tube connection's grafting subassembly, its characterized in that: the splicing assembly comprises a splicing head, a sleeve ring and an inner core, wherein the air inlet pipe is spliced into a splicing head inner cavity, one end, far away from the air inlet pipe, of the splicing head is provided with a round pocket hole along the outer circumference, a limiting steel ball is arranged in the pocket hole, the inner core is coaxially arranged in the splicing head, one end of the inner core is elastically connected with the end face of the air inlet pipe through a spring, the inner core can slide along the inner cavity of the splicing head, the sleeve ring is sleeved outside one end, far away from the air inlet pipe, of the splicing head, the spring is arranged between the inner cavity of the sleeve ring and the outer wall of the splicing head, the sleeve ring can slide along the outer wall of the splicing head, the inner wall of one end.

2. The differential metal pressure pipe airtightness test quick coupling according to claim 1, wherein: the air inlet pipe is connected with the plug connector through threads.

3. The differential metal pressure pipe airtightness test quick coupling according to claim 1, wherein: and a sealing ring is arranged between the inner core and the inner cavity of the plug connector.

4. The differential metal pressure pipe airtightness test quick coupling according to claim 1, wherein: one end of the inner core is provided with a jack corresponding to the end part of the pipe fitting to be detected, and the jack is internally provided with a sealing gasket.

5. The differential metal pressure pipe airtightness test quick coupling according to claim 1, wherein: and a sealing ring is arranged between the plug connector and the lantern ring.

6. The differential metal pressure pipe airtightness test quick coupling according to claim 1, wherein: the diameter of the pocket hole on the inner wall of the plug is smaller than that of the limiting steel ball, and the diameter of the pocket hole on the outer wall of the plug is larger than that of the limiting steel ball.

7. The utility model provides a metal pressure differential pipe airtightness testing arrangement which characterized in that: the quick joint for testing the airtightness of the metal differential pressure pipe according to any one of claims 1 to 6, the supporting mechanism, the pressing mechanism and the testing mechanism are included.