CN112302737B - Sealing device, engine and ground combustion engine - Google Patents
Sealing device, engine and ground combustion engine Download PDFInfo
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- CN112302737B CN112302737B CN202011188681.0A CN202011188681A CN112302737B CN 112302737 B CN112302737 B CN 112302737B CN 202011188681 A CN202011188681 A CN 202011188681A CN 112302737 B CN112302737 B CN 112302737B
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- oil pipe
- face
- clamping mechanism
- locking
- chamfer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
- F01D25/183—Sealing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
Abstract
The invention discloses a sealing device, an engine and a ground gas turbine, which comprise a clamping mechanism, a locking mechanism and a sealing mechanism, wherein the clamping mechanism is sleeved at the joint of an oil pipe and an external pipeline so as to press the binding surface of the oil pipe and the external pipeline by external acting force; the locking mechanism comprises an annular base which is buckled on the outer wall surface of the oil pipe in an annular mode and is in interference fit with the outer wall surface of the oil pipe, the locking mechanism is assembled on the oil pipe through the annular base, a locking piece which is inclined towards the clamping mechanism and is used for tightly hooping the clamping mechanism is arranged at the end of the annular base, and the locking piece is in interference fit with the clamping mechanism; the locking fastener and the annular base are integrally formed. The sealing device can effectively prevent the phenomenon of lubricating oil leakage at the joint of the oil pipe and the external pipeline. The sealing device is convenient to disassemble, simple to install and capable of being repeatedly used in the installation or disassembly process.
Description
Technical Field
The invention relates to the field of gas turbine engines and ground combustion engines, in particular to a sealing device. The invention further relates to a sealing device comprising the sealing device.
Background
In a gas turbine engine and a ground combustion engine, during operation, sufficient lubricating oil needs to be provided for a bearing to lubricate and cool the bearing, the lubricating oil is generally required to be introduced into a bearing cavity by means of an external pipeline and discharged from the bearing cavity, and lubricating oil leakage is easy to occur at the joint of an oil pipe and the external pipeline, so that a sealing design needs to be considered to prevent the lubricating oil from leaking from the joint of the oil pipe and the external pipeline.
Disclosure of Invention
The invention provides a sealing device, an engine and a ground combustion engine, which aim to solve the technical problem that when lubricating oil is supplied to bearings inside a gas turbine engine and the ground combustion engine, the connecting part of an oil pipe and an external pipeline is easy to leak.
The technical scheme adopted by the invention is as follows:
a sealing device is used for sealing the joint of an oil pipe and an external pipeline so as to prevent lubricating oil leakage when oil is supplied to an engine or a bearing in a ground gas turbine, and comprises a clamping mechanism which is sleeved at the joint of the oil pipe and the external pipeline so as to press the joint surface of the oil pipe and the external pipeline by external acting force, and a locking mechanism which is tightly hooped on the outer surface of the clamping mechanism and the outer wall surface of the oil pipe and is in interference fit with the clamping mechanism and the oil pipe so as to prevent the clamping mechanism from moving by extrusion stress; the locking mechanism comprises an annular base which is buckled on the outer wall surface of the oil pipe in an annular mode and is in interference fit with the outer wall surface of the oil pipe, the locking mechanism is assembled on the oil pipe through the annular base, a locking piece which is inclined towards the clamping mechanism and is used for tightly hooping the clamping mechanism is arranged at the end of the annular base, and the locking piece is in interference fit with the clamping mechanism; the locking fastener and the annular base are integrally formed.
Furthermore, the outer surface of the locking fastener and the end surface of the annular base form an alpha angle which is 85-87 degrees.
Furthermore, the clamping mechanism comprises a sleeve ring, one end of the inner wall surface of the sleeve ring is in threaded connection with the outer surface of the oil pipe, the other end of the inner wall surface of the sleeve ring is attached to the outer wall surface of an external pipeline, a sleeve nut used for bearing the tightening force is arranged at one end, close to the oil pipe, of the sleeve ring, and an annular clamping ring used for being sleeved on the outer wall surface of the sleeve ring in an annular mode and in interference fit with the locking piece is arranged at one end, close to the pipeline, of the sleeve ring; the lantern ring and the annular clamping ring are of an integrally formed structure, or the lantern ring and the annular clamping ring are fixedly connected.
Furthermore, the outer wall surface of the annular retainer ring adopts outer convex surfaces and inner concave surfaces which are alternately distributed along the circumferential direction, the outer convex surfaces are in smooth transition connection with the inner concave surfaces, the number of the outer convex surfaces is n, and the number of the inner concave surfaces is n; the number of catch pieces is N, N = N x y +1, where y is a factor related to the width of the catch piece (42).
Furthermore, the fasteners are multiple, and the locking fasteners are distributed at intervals along the circumferential direction of the end part of the annular base.
Furthermore, the locking fastener is of a rectangular base structure and comprises a first end face, a second end face, a third end face and a fourth end face, wherein the first end face is attached to the nut, the second end face and the third end face are adjacent to the first end face and are respectively positioned on two sides of the first end face, and the fourth end face is adjacent to the first end face and is far away from the annular base; the first end face and the fourth end face are in transitional connection through a first chamfer, the first end face and the second end face are in transitional connection through a second chamfer, and the first end face and the third end face are in transitional connection through a third chamfer.
Furthermore, the first chamfer adopts a chamfer of C0.4-C0.6; the second chamfer adopts a chamfer of 0.2 to 0.3 carbon atoms, and the cutting depth is 2.5 to 3.5mm; the third chamfer adopts a chamfer of 0.2-0.3C, and the cutting depth is 2.5-3.5 mm.
Furthermore, the width of the locking fastener is 2.5 mm-3.0 mm.
According to another aspect of the invention, the engine is also provided, and the sealing device is installed at the joint of the oil pipe and the external pipeline.
According to another aspect of the invention, the ground combustion engine is also provided, and the sealing device is installed at the connection position of the oil pipe and the external pipeline.
The invention has the following beneficial effects:
the sealing device comprises a clamping mechanism and a locking mechanism, wherein the clamping mechanism is used for clamping and fixing the joint surface of the oil pipe and an external pipeline, the locking mechanism is tightly hooped on the outer surface of the clamping mechanism and the outer wall surface of the oil pipe, and the clamping mechanism is tightly pressed through extrusion stress to prevent the clamping mechanism from moving. The locking mechanism comprises an annular base and a locking fastener, the annular base is used for assembling the locking mechanism on an oil pipe instead of the clamping mechanism, on one hand, the oil pipe supports the locking mechanism, and on the other hand, when the clamping mechanism moves, the locking mechanism can be prevented from moving along with the clamping mechanism. The lock catch piece inclines towards the direction of the clamping mechanism and is in interference fit with the clamping mechanism, so that the clamping mechanism is pressed through extrusion stress, and the phenomenon of lubricating oil leakage at the joint of the oil pipe and an external pipeline is effectively prevented. In addition, the accessible is adjusted quantity, width and inclination to the latch fitting, and then adjusts extrusion stress's size to satisfy the demand of extrusion stress under the different situation, thereby realize different assembly requirements. The sealing device is convenient to disassemble, simple to install, convenient to transport and reusable in the process of installing or disassembling the engine and the ground gas turbine.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a seal installation according to a preferred embodiment of the present invention;
FIG. 2 is a block diagram of the clamping mechanism and locking mechanism of the preferred embodiment of the present invention;
FIG. 3 is an assembly view of the clamping mechanism and locking mechanism of the preferred embodiment of the present invention;
FIG. 4 is a front view of the locking mechanism of the preferred embodiment of the present invention;
FIG. 5 is a block diagram of the locking mechanism of the preferred embodiment of the present invention; and
fig. 6 is a diagram of the ring collar structure of the preferred embodiment of the present invention.
The reference numbers indicate:
1. sealing the oil pipe; 2. an external pipe; 3. a clamping mechanism; 31. a collar; 32. a nut is sleeved; 33. an annular collar; 4. a locking mechanism; 41. an annular base; 42. a fastener; 421. a first chamfer; 422. a second chamfer; 423. a third chamfer;
α represents the angle α and D represents the width of the catch piece.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
FIG. 1 is a schematic view of a seal installation of a preferred embodiment of the present invention; FIG. 2 is a block diagram of the clamping mechanism and locking mechanism of the preferred embodiment of the present invention; FIG. 3 is an assembly view of the clamping mechanism and locking mechanism of the preferred embodiment of the present invention; FIG. 4 is a front view of the locking mechanism of the preferred embodiment of the present invention; FIG. 5 is a block diagram of the locking mechanism of the preferred embodiment of the present invention; fig. 6 is a diagram of the ring collar structure of the preferred embodiment of the present invention.
As shown in fig. 1, 2 and 4, the sealing device of the present embodiment is used for sealing a joint between an oil pipe 1 and an external pipeline 2 to prevent oil leakage when supplying oil to an engine or a bearing inside a ground combustion engine, and includes a clamping mechanism 3 sleeved at the joint between the oil pipe 1 and the external pipeline 2 to press a joint surface of the oil pipe 1 and the external pipeline 2 by an external force, and a locking mechanism 4 tightly hooped on an outer surface of the clamping mechanism 3 and an outer wall surface of the oil pipe 1 and in interference fit with the clamping mechanism 3 and the oil pipe 1 to prevent the clamping mechanism 3 from moving by an extrusion stress; the locking mechanism 4 comprises an annular base 41 which is annularly buckled on the outer wall surface of the oil pipe 1 and is in interference fit with the outer wall surface of the oil pipe 1, the locking mechanism 4 is assembled on the oil pipe 1 through the annular base 41, a locking fastener 42 which is inclined towards the direction of the clamping mechanism 3 and is used for tightly hooping the clamping mechanism 3 is arranged at the end part of the annular base 41, and the locking fastener 42 is in interference fit with the clamping mechanism 3; the locking piece 42 is integrally formed with the annular base 41.
The sealing device comprises a clamping mechanism and a locking mechanism, wherein the clamping mechanism is used for clamping and fixing the joint surface of the oil pipe and an external pipeline, the locking mechanism is tightly hooped on the outer surface of the clamping mechanism and the outer wall surface of the oil pipe, and the clamping mechanism is tightly pressed through extrusion stress to prevent the clamping mechanism from moving. The locking mechanism comprises an annular base and a locking fastener, the annular base is used for assembling the locking mechanism on an oil pipe instead of a clamping mechanism, on one hand, the oil pipe provides support for the locking mechanism, and on the other hand, when the clamping mechanism moves, the locking mechanism can be prevented from moving together with the clamping mechanism. The lock catch piece inclines towards the direction of the clamping mechanism and is in interference fit with the clamping mechanism, so that the clamping mechanism is pressed through extrusion stress, and the phenomenon of lubricating oil leakage at the joint of the oil pipe and an external pipeline is effectively prevented. In addition, the accessible is adjusted quantity, width and inclination to the latch fitting, and then adjusts extrusion stress's size to satisfy the demand of extrusion stress under the different situation, thereby realize different assembly requirements. The sealing device is convenient to disassemble, simple to install, convenient to transport and reusable in the process of installing or disassembling the engine and the ground gas turbine.
In this embodiment, the outer surface of the locking member 42 and the end surface of the annular base 41 form an angle α, which is 85 ° to 87 °. The angle alpha formed by the outer surface of the locking piece 42 and the end surface of the annular base 41 is 85-87 degrees, if the angle is too large, the deformation extrusion force generated by interference fit is insufficient, and the anti-rotation effect is poor. Because the annular base 41 and the locking fastener 42 are of an integrally formed structure, the excessively small angle can cause the locking fastener 42 to deform greatly in the assembling process, so that irreversible deformation is generated, and the locking force is reduced after repeated use.
As shown in fig. 2 and 3, in the present embodiment, the clamping mechanism 3 includes a collar, one end of an inner wall surface of the collar 31 is in threaded connection with an outer surface of the oil pipe 1, the other end of the inner wall surface of the collar 31 is attached to an outer wall surface of the external pipeline 2, one end of the collar 31 close to the oil pipe 1 is provided with a casing nut 32 for bearing a tightening force, and one end of the collar 31 close to the pipeline 2 is provided with an annular collar 33 for being sleeved on the outer wall surface of the collar 31 and being in interference fit with the locking piece 42; the lantern ring 31 and the annular clamping ring 33 are of an integrated structure, or the lantern ring 31 and the annular clamping ring 33 are fixedly connected. The clamping mechanism 3 is stably installed at the joint of the oil pipe 1 and the external pipeline 2 by applying a tightening force to the outer nut 32, and the clamping mechanism 3 can be disassembled by applying a force to the outer nut 32 during the unloading process. Above-mentioned lantern ring 31 and annular rand 33 adopt integrated into one piece structure, also can adopt lantern ring 31 and annular rand 33 fixed connection, and wherein fixed connection can be for the welding, also can interference fit to reach the reversal effect, prevent that the nut is not hard up and lead to oil to reveal. If the binding face of oil pipe and outside pipeline only sealed through the nut is screwed up, because the engine operates for a long time under different states, receives the influence of vibration, takes place the drunkenness and can lead to the nut not hard up for the laminating effect variation between oil pipe and the outside pipeline, oil pipe and outside pipeline are rigid structure moreover, and the laminating effect variation will lead to the lubricating oil to leak. If the nut is used alone, a fuse knotting design can also be used to achieve the fastening of the nut, but for reasons of dimensional control, the fuse is not tied tightly by perforating the tubing or external piping. Furthermore, the fuse requires a high level of worker experience during installation, and if not fully tightened, oil leakage can occur. In addition, in the process of mounting and dismounting, the fuse may have the risk of falling into an engine or a ground combustion engine, so that the safety is reduced, and the fuse screwing structure needs to be replaced and screwed again in the process of mounting and dismounting the engine, so that the convenience is low; and regular inspection is also required during use. Here, the outer nut 32 may be a hexagonal nut.
As shown in fig. 6, in the present embodiment, the outer wall surface of the annular collar 33 adopts outer convex surfaces and inner concave surfaces alternately arranged along the circumferential direction, the outer convex surfaces are in smooth transition connection with the inner concave surfaces, the number of the outer convex surfaces is n, and the number of the inner concave surfaces is n. The number of the locking pieces 42 is N, N = N × y +1, where y is a coefficient related to the width of the locking piece (42). The larger y is, the smaller the width of the corresponding lock catch is, and the proper y value can be calculated according to the value of D in practical application. Can avoid hasp piece 42 unanimous with outer convex surface or interior concave surface figure, choose for use the quantity design of hasp piece 42 of N = nxy +1, can realize on hasp piece 42 the straggly installation outer convex surface, interior concave surface, appear less reversal margin, avoid the assembly to arouse prevent that the commentaries on classics effect weakens.
In this embodiment, the locking member 42 is one. Alternatively, the locking member 42 is provided in plural, and the plural locking members 42 are arranged along the end portion of the annular base 41 at intervals in the circumferential direction. The locking member 42 may be one, where the nut is provided with a corner-free outer surface. The locking member 42 may be provided in plural numbers, and plural numbers are arranged at intervals along the circumference of the end portion of the annular base 41. Preferably, a plurality of catch members 42 are arranged at equidistant intervals along the end of the annular base 41 to equalize the compression stresses to the nut and thus to achieve a stable locking of the nut. Generally, the greater the number of catch members 42, the greater the compressive stress.
As shown in fig. 4 and 5, in the present embodiment, the locking member 42 is a rectangular base, and the locking member 42 includes a first end surface attached to the nut, a second end surface and a third end surface adjacent to the first end surface and respectively located at two sides of the first end surface, and a fourth end surface adjacent to the first end surface and far away from the annular base 41; the first end face and the fourth end face are in transitional connection through a first chamfer 421, the first end face and the second end face are in transitional connection through a second chamfer 422, and the first end face and the third end face are in transitional connection through a third chamfer 423. The lock catch piece 42 is of a rectangular base structure, the overall structure of the lock catch piece 42 is optimized, and the adjacent end faces of the first end face, namely the second end face, the third end face and the fourth end face, of the lock catch piece 42, which are attached to the nut, are respectively provided with a chamfer structure, so that in the assembling process, the chamfer structure design plays a guiding role, and the installation and the decomposition are facilitated.
The first chamfer 421 is a chamfer of C0.4-C0.6. The second chamfer 422 adopts a chamfer of 0.2 to 0.3 carbon atoms, and the cutting depth is 2.5 to 3.5mm. The third chamfer 423 is a chamfer of 0.2-0.3C, and the cutting depth is 2.5-3.5 mm.
In this embodiment, the width of the locking member 42 is 2.5mm to 3.0mm. The width of the locking fastener 42 is 2.5 mm-3.0 mm, and the proper width increases the force generated under the same deformation, so that the tightening of the tightening clamping mechanism 3 is realized. However, if the width is too large, the latch 42 will be irreversibly deformed by the application of a larger force, which may affect the structural stability.
According to another aspect of the invention, the engine is also provided, and the sealing device is installed at the joint of the oil pipe and the external pipeline. The sealing device is arranged at the joint of the oil pipe inside the engine and the external pipeline, so that the phenomenon of lubricating oil leakage at the joint of the oil pipe and the external pipeline can be effectively prevented, and the normal operation of an engine lubricating oil system is further ensured.
According to another aspect of the invention, the ground combustion engine is also provided, and the sealing device is installed at the connection position of the oil pipe and the external pipeline. The sealing device is arranged at the joint of the oil pipe inside the ground gas turbine and the external pipeline, so that the phenomenon of oil leakage at the joint of the oil pipe and the external pipeline can be effectively prevented, and the normal operation of the ground gas turbine is further ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A sealing device is used for sealing the joint of an oil pipe (1) and an external pipeline (2) to prevent the leakage of lubricating oil when supplying oil to an engine or a bearing in a ground internal combustion engine,
the sealing device comprises a clamping mechanism (3) which is sleeved at the joint of the oil pipe (1) and the external pipeline (2) so as to press the joint surface of the oil pipe (1) and the external pipeline (2) through external acting force, and a locking mechanism (4) which is tightly hooped on the outer surface of the clamping mechanism (3) and the outer wall surface of the oil pipe (1) and is in interference fit with the clamping mechanism (3) and the oil pipe (1) so as to prevent the clamping mechanism (3) from moving through extrusion stress;
the locking mechanism (4) comprises an annular base (41) which is annularly buckled on the outer wall surface of the oil pipe (1) and is in interference fit with the outer wall surface of the oil pipe (1), the locking mechanism (4) is assembled on the oil pipe (1) through the annular base (41), a locking fastener (42) which is inclined towards the clamping mechanism (3) and is used for tightly hooping the clamping mechanism (3) is arranged at the end part of the annular base (41), and the locking fastener (42) is in interference fit with the clamping mechanism (3);
the locking fastener (42) and the annular base (41) are integrally formed;
the outer surface of the locking fastener (42) and the end surface of the annular base (41) form an alpha angle,
the alpha angle is 85-87 degrees;
the width of the locking fastener (42) is 2.5 mm-3.0 mm;
the clamping mechanism (3) comprises a sleeve ring (31), one end of the inner wall surface of the sleeve ring (31) is in threaded connection with the outer surface of the oil pipe (1), the other end of the inner wall surface of the sleeve ring (31) is attached to the outer wall surface of the external pipeline (2), one end, close to the oil pipe (1), of the sleeve ring (31) is provided with a jacket nut (32) used for bearing screwing force, one end, close to the external pipeline (2), of the sleeve ring (31) is provided with an annular clamping ring (33) used for being sleeved on the outer wall surface of the sleeve ring (31) in an annular mode and in interference fit with the locking fastener (42);
the lantern ring (31) and the annular clamping ring (33) adopt an integrated molding structure, or
The lantern ring (31) is fixedly connected with the annular clamping ring (33);
the outer wall surface of the annular clamping ring (33) adopts outer convex surfaces and inner concave surfaces which are alternately distributed along the circumferential direction, the outer convex surfaces are in smooth transition connection with the inner concave surfaces, the number of the outer convex surfaces is n, and the number of the inner concave surfaces is n;
the number of the locking elements (42) is N, N = N × y +1, wherein y is a coefficient relating to the width of the locking elements (42).
2. The sealing device of claim 1,
the number of the locking parts (42) is multiple, and the locking parts (42) are arranged at intervals along the circumferential direction of the end part of the annular base (41).
3. The sealing device of claim 2,
the lock catch piece (42) is of a rectangular base structure, and the lock catch piece (42) comprises a first end face attached to the nut, a second end face and a third end face which are adjacent to the first end face and located on two sides of the first end face respectively, and a fourth end face which is adjacent to the first end face and far away from the annular base (41);
the first end face is in transitional connection with the fourth end face through a first chamfer (421), the first end face is in transitional connection with the second end face through a second chamfer (422), and the first end face is in transitional connection with the third end face through a third chamfer (423).
4. The sealing device of claim 3,
the first chamfer (421) adopts a chamfer of C0.4-C0.6;
the second chamfer (422) adopts a chamfer of 0.2-0.3C, and the cutting depth is 2.5-3.5 mm;
the third chamfer (423) is a chamfer of 0.2-0.3C, and the cutting depth is 2.5-3.5 mm.
5. An engine, characterized in that a sealing device according to any one of claims 1-4 is installed at the connection of the oil pipe (1) and the external pipe (2).
6. A ground combustion engine, characterized in that a sealing device according to any of claims 1-4 is installed at the connection of the oil pipe (1) and the external pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188681.0A CN112302737B (en) | 2020-10-30 | 2020-10-30 | Sealing device, engine and ground combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011188681.0A CN112302737B (en) | 2020-10-30 | 2020-10-30 | Sealing device, engine and ground combustion engine |
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| Publication Number | Publication Date |
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| CN112302737A CN112302737A (en) | 2021-02-02 |
| CN112302737B true CN112302737B (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203880267U (en) * | 2014-03-28 | 2014-10-15 | 中航商用航空发动机有限责任公司 | Secondary sealing self-locking pipe joint assembly |
| CN203880265U (en) * | 2014-03-28 | 2014-10-15 | 中航商用航空发动机有限责任公司 | Connector device of threaded connection self-locking pipe |
| CN204852719U (en) * | 2015-07-24 | 2015-12-09 | 长城汽车股份有限公司 | Cold pipe connection structure of fast spigot joint and transmission oil |
| CN205315893U (en) * | 2016-01-05 | 2016-06-15 | 中国航空动力机械研究所 | Anti -loosen screw nut component |
| CN207421603U (en) * | 2017-11-08 | 2018-05-29 | 香河瑞和通汽车零部件有限公司 | Safety lock structure automobile pipeline plastics quick connector |
| CN108591656A (en) * | 2018-01-16 | 2018-09-28 | 珠海格力电器股份有限公司 | Connecting pipe component and air conditioner including it |
| CN109268602B (en) * | 2018-04-30 | 2020-10-23 | 浙江星霸环保工程有限公司 | Sealing device capable of being locked quickly |
| CN108612935A (en) * | 2018-06-21 | 2018-10-02 | 江苏腾驰科技有限公司 | A kind of secondary sealer for automobile engine mesohigh pipeline |
| CN110056723A (en) * | 2019-05-08 | 2019-07-26 | 中国航发湖南动力机械研究所 | Locking device and pipeline self-locking connection structure for piping connection |
| CN211259967U (en) * | 2019-12-24 | 2020-08-14 | 重庆小康工业集团股份有限公司 | Fuel pipeline quick connector |
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