CN113483167A - Self-tightening type pipeline connecting structure - Google Patents
Self-tightening type pipeline connecting structure Download PDFInfo
- Publication number
- CN113483167A CN113483167A CN202110747478.0A CN202110747478A CN113483167A CN 113483167 A CN113483167 A CN 113483167A CN 202110747478 A CN202110747478 A CN 202110747478A CN 113483167 A CN113483167 A CN 113483167A
- Authority
- CN
- China
- Prior art keywords
- pipe joint
- annular ring
- self
- locking nut
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
- F16L19/07—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends adapted for use in socket or sleeve connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Abstract
The invention discloses a self-tightening pipeline connecting structure, which comprises a pipe joint, a pipe joint nozzle and a locking nut, wherein the locking nut is used for connecting the pipe joint and the pipe joint nozzle; one end of the pipe joint is positioned in the pipe joint nozzle, one end of the pipe joint is connected with the pipe joint nozzle in a sealing way through a sealing part, and the pipe joint is communicated with the pipe joint nozzle through the sealing part; one end of the locking nut is sleeved on the pipe joint, the other end of the locking nut is connected with the pipe joint nozzle, a leakage detecting part is arranged in the locking nut, and the leakage detecting part is communicated with the sealing part. The leakage detection device can realize that the sealing performance of the pipeline connecting structure is gradually improved in the initial state and the working state by arranging two sealing structures, so that the pipeline connecting structure can be used in the occasions of high-pressure dangerous media, and meanwhile, the leakage detection device is provided with the leakage detection hole, can directly detect the leakage condition of the connecting structure, has simple detection flow and intuitive result, and can effectively improve the leakage detection efficiency.
Description
Technical Field
The invention relates to the technical field of pipeline connection, in particular to a self-tightening pipeline connection structure.
Background
The pipeline connecting structure is widely applied to an active aerospace product pipeline system and mainly comprises a spherical joint, a conical pipe connecting nozzle and a casing nut. The two ends of the spherical joint and the conical filler neck, which are far away from each other, are respectively connected with a pipeline, the outer wall surface of the spherical joint end is sleeved with the outer nut, and the inner wall surface of the outer nut and the outer wall surface of the conical filler neck are of threaded structures. During the pipeline connection process, firstly, the spherical surface part of the spherical joint is embedded into the inner conical surface part of the conical filler neck, then the outer sleeve nut is applied with tightening torque, so that the inner thread of the outer sleeve nut is screwed with the outer thread of the conical filler neck, the outer sleeve nut pushes the spherical joint to approach the conical filler neck in the screwing process, the spherical surface of the spherical joint is attached to and tightly pressed against the inner conical surface of the conical filler neck by virtue of axial pretightening force generated in the screwing process, a closed sealing ring belt is formed at the contact part, and finally sealing is realized.
However, the above-mentioned pipe connection structure is affected by medium separating force and other external loads during operation, and the sealing ring zone at the contact position of the spherical surface of the spherical joint and the inner conical surface of the conical nipple is difficult to maintain closeness, and medium leakage is easily caused under high pressure. The sealing performance of the sealing ring belt at the contact part is ensured only by increasing the pretightening force, so that the local yield failure phenomenon occurs between the spherical surface of the spherical joint and the inner conical surface of the conical pipe connecting nozzle, and the sealing reliability is further influenced. Leakage of the pipeline system often causes serious consequences, and a more reliable pipeline connecting structure is urgently needed under the high-pressure environment.
Disclosure of Invention
The invention aims to provide a self-tightening type pipeline connecting structure, which solves the problems in the prior art, can realize that the sealing performance of the pipeline connecting structure is gradually improved in an initial state and a working state by arranging two sealing structures, so that the pipeline connecting structure can be used in the occasions of high-pressure dangerous media, and meanwhile, a leakage detection hole is arranged, so that the leakage condition of the connecting structure can be directly detected, the detection process is simple, the result is visual, and the leakage detection efficiency can be effectively improved.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a self-tightening pipeline connecting structure, which comprises a pipe joint, a pipe joint nozzle and a locking nut, wherein the locking nut is used for connecting the pipe joint with the pipe joint nozzle;
one end of the pipe joint is positioned in the pipe joint nozzle, one end of the pipe joint is connected with the pipe joint nozzle in a sealing mode through a sealing part, and the pipe joint is communicated with the pipe joint nozzle through the sealing part;
one end of the locking nut is sleeved on the pipe joint, the other end of the locking nut is connected with the pipe joint nozzle, a leakage detecting part is arranged in the locking nut, and the leakage detecting part is communicated with the sealing part;
the sealing part comprises an annular ring fixedly connected with the pipe joint, a boss is fixedly connected to the outer surface of the annular ring, the pipe joint nozzle is close to one end of the pipe joint and is provided with a containing groove for containing the annular ring, and the outer surface of the annular ring and the boss are both connected with the pipe joint nozzle in an abutting mode through the containing groove.
Preferably, the annular ring is of a circular truncated cone-shaped structure, the diameter of one end, close to the pipe joint, of the annular ring is not smaller than the diameter of one end, far away from the pipe joint, of the annular ring, the boss is of an arc-shaped structure, and the boss is located on one side, far away from the pipe joint, of the annular ring.
Preferably, a first medium channel is formed in the pipe joint, a second medium channel is formed in the pipe joint, and the first medium channel is communicated with the second medium channel through the annular ring inner ring.
Preferably, the pipe joint is fixedly connected with a first clamping table, the annular ring passes through the first clamping table and the pipe joint fixedly connected, the locking nut is fixedly connected with a second clamping table, the second clamping table is located at one side, away from the pipe joint nozzle, of the first clamping table, the second clamping table is abutted to the first clamping table, the outer surface of the pipe joint nozzle is provided with an external thread, and the locking nut passes through the external thread and the pipe joint nozzle in threaded connection.
Preferably, the horizontal included angle between the first clamping table and the annular ring is 30-45 degrees.
Preferably, the pipe joint, the first clamping table, the annular ring and the boss are of an integrally formed structure.
Preferably, the leak detection part comprises a cavity arranged in the locking nut, a leak detection hole is formed in the outer surface of the locking nut, the leak detection hole is connected with the cavity, and the cavity is communicated with the annular ring.
Preferably, a first outer hexagon is fixedly connected to the outer surface of the locking nut, a second outer hexagon is fixedly connected to the outer surface of the pipe joint, and the second outer hexagon is located on one side, far away from the locking nut, of the external thread.
Preferably, a first fuse hole is formed in the first outer hexagonal surface, a second fuse hole is formed in the second outer hexagonal surface, and the first fuse hole and the second fuse hole are fixedly connected through a fuse.
Preferably, the annular ring is an elastic annular ring.
The invention discloses the following technical effects:
1. the self-tightening pipeline connecting structure provided by the invention is abutted with the pipe connector through the outer surface of the annular ring and the boss, and the outer surface of the annular ring and the boss form two sealing structures, so that the reliability of the sealing structures is gradually improved in the initial state and the working state;
2. the invention belongs to a self-tightening sealing structure, and tests prove that the leakage rate of the sealing structure is not reduced along with the increase of the pressure of a medium, and the leakage rate is basically stable;
3. the self-tightening pipeline connecting structure provided by the invention can realize high-pressure sealing, has few types of parts and is convenient to disassemble and assemble, the pipe joint and the pipe joint nozzle can be used after being disassembled for many times, and the sealing performance can last for a longer time;
4. the invention has the characteristics of low assembly moment and light structural mass;
5. the self-tightening pipeline connecting structure provided by the invention is provided with the leakage detecting part on the locking nut, can directly detect the leakage condition of the connecting structure, has simple detection flow and intuitive result, and can effectively improve the leakage detecting efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of a half-section structure of a self-tightening pipe connection structure;
FIG. 2 is a schematic structural view of a self-tightening type pipeline connection structure
FIG. 3 is a schematic view of a pipe joint structure;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic structural view of the pipe joint;
FIG. 6 is a schematic view of a leak detection section;
FIG. 7 is a schematic diagram of a structure for forming a first sealing cuff;
FIG. 8 is a schematic diagram of the structure for forming a second sealing cuff;
FIG. 9 is a schematic diagram of a fuse locking mode;
the pipe joint comprises a pipe joint 1, a pipe joint 2, a pipe joint 3, a locking nut 4, an annular ring 5, a boss 6, a first medium channel 7, a second medium channel 8, a first clamping table 9, a second clamping table 10, an external thread 11, a cavity 12, a leakage detection hole 13, a first external hexagon 14, a second external hexagon 15, a first safety hole 16, a second safety hole 17, a fuse 18, an accommodating groove 19, a locking thread 19 and a clearance cavity 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a self-tightening pipeline connecting structure, which comprises a pipe joint 1, a pipe joint mouth 2 and a locking nut 3, wherein the locking nut 3 is used for connecting the pipe joint 1 with the pipe joint mouth 2; one end of the pipe joint 1 is positioned in the pipe joint 2, one end of the pipe joint 1 is connected with the pipe joint 2 in a sealing way through a sealing part, and the pipe joint 1 is communicated with the pipe joint 2 through the sealing part; one end of a locking nut 3 is sleeved on the pipe joint 1, the other end of the locking nut 3 is connected with the pipe joint nozzle 2, a leakage detecting part is arranged in the locking nut 3, and the leakage detecting part is communicated with the sealing part; the sealing part comprises an annular ring 4 fixedly connected with the pipe joint 1, a boss 5 is fixedly connected to the outer surface of the annular ring 4, an accommodating groove 18 for accommodating the annular ring 4 is formed in one end, close to the pipe joint 1, of the pipe joint 2, and the outer surface of the annular ring 4 and the boss 5 are abutted to the pipe joint 2 through the accommodating groove 18.
The pipe joint 1 and the pipe joint 2 are in a sleeved relationship, and the pipe joint 1 is inserted into the pipe joint 2 through the accommodating groove 18. The pipe joint 1 is a symmetrical body rotating around the longitudinal axis of the pipe joint 1, and the central axis of the pipe joint 1 should be arranged corresponding to the central axis of the pipe nipple 2 so that the pipe joint 1 and the pipe nipple 2 are sleeved with each other.
When the pipe joint is initially installed, the locking nut 3 is sleeved on the pipe joint 1, the pipe joint 1 and the pipe joint nozzle 2 are in a sleeved relation, the pipe joint 1 is pushed by the locking nut 3 to move towards the pipe joint nozzle 2 by moving the locking nut 3, so that the annular ring 4 on the pipe joint 1 extends into the accommodating groove 18, when the boss 5 abuts against the pipe joint nozzle 2, a first sealing ring zone is formed, at the moment, the locking nut 3 is continuously fastened, the boss 5 reaches a pre-tightening state due to abutting against the pipe joint nozzle 2, elastic deformation is generated, and then the annular ring 4 on the pipe joint 1 abuts against the pipe joint nozzle 2, and a second sealing ring zone is formed.
Under the operating condition, after the internal medium acts on the self-tightening type pipeline connecting structure, the annular ring 4 on the pipe joint 1 radially expands under the internal pressure, the specific pressure of the first sealing ring belt is increased, and the self-tightening of the sealing structure is realized. If there is the medium leakage during operation, can get into leak hunting portion, the accessible leak hunting portion carries out the leak hunting, confirms sealed effect.
Further optimize the scheme, annular ring 4 is round platform type structure, and the diameter that annular ring 4 is close to 1 one end of coupling is not less than the diameter that annular ring 4 kept away from 1 one end of coupling, and boss 5 is the arc structure, and boss 5 is located one side that annular ring 4 kept away from 1 coupling. The annular ring 4 is a structure protruding in the extending direction of the pipe joint 1, and the circumferential section thereof is a sector. The boss 5 is the half-circular arc structure, and the half-circular arc of boss 5 is higher than annular 4 side 0.04mm, and annular 4 is close to the preferred 0.4mm of thickness of first ka tai 8, and annular 4 is kept away from the preferred 0.34mm of thickness of first ka tai 8. In order to improve the sealing effect, the shape and structure of the receiving groove 18 should be adapted to the structure of the annular ring 4, so that the boss 5 and the annular ring 4 can better abut against the pipe joint nozzle 2 when the annular ring 4 is located in the receiving groove 18.
According to a further optimized scheme, a first medium channel 6 is formed in the pipe joint 1, a second medium channel 7 is formed in the pipe joint 2, and the first medium channel 6 is communicated with the second medium channel 7 through an inner ring of the annular ring 4. The annular ring 4 is a hollow structure, the pipeline connecting structure plays a role in connecting two pipelines, the pipe joint 1 and the pipe joint 2 are respectively communicated with different pipelines, and a medium in the first medium channel 6 is communicated with the second medium channel 7 through the inner ring of the annular ring 4, so that the medium circulates.
According to the further optimization scheme, the pipe joint 1 is fixedly connected with a first clamping table 8, the annular ring 4 is fixedly connected with the pipe joint 1 through the first clamping table 8, the locking nut 3 is internally and fixedly connected with a second clamping table 9, the second clamping table 9 is located on one side, away from the pipe joint nozzle 2, of the first clamping table 8, the second clamping table 9 is abutted to the first clamping table 8, the outer surface of the pipe joint nozzle 2 is provided with an external thread 10, and the locking nut 3 is in threaded connection with the pipe joint nozzle 2 through the external thread 10. The first clamping table 8 is matched with the locking nut 3 to enable the locking nut 3 to drive the pipe joint 1 to move, when in use, the locking nut 3 is only required to be sleeved on the pipe joint 1, the locking nut 3 is moved to enable the second clamping table 9 on the locking nut 3 to be abutted against the first clamping table 8, the use is convenient, the operation is simple,
the inner surface of the locking nut 3 is provided with locking threads 19, which locking threads 19 cooperate with the external thread 10. After the second clamping table 9 abuts against the first clamping table 8, the locking nut 3 is sleeved on the pipe connector mouth 2, the locking thread 19 is in contact with and matched with the external thread 10, the locking nut 3 is rotated, the locking nut 3 moves, the annular ring 4 and the boss 5 on the pipe connector 1 are driven to move, and finally sealing is finished. Through setting up lock nut 3, can realize that high-pressure seal and part kind are few, easy dismounting, coupling 1 and pipe connector 2 can be used after dismantling many times, and its sealing performance can last the time longer.
In a further optimized scheme, the horizontal included angle between the first clamping table 8 and the annular ring 4 is 30-45 degrees. In the holding tank 18 is put into to the convenience of enclosing 4, make annular ring 4 take place deformation easily simultaneously, consequently set up the horizontal included angle that first ka tai 8 and annular ring 4 and be 30 ~ 45. In the working state, the media flow into the second media channel 7 through the annular ring 4 in the first media channel 6, the section diameter of the media flow is reduced due to the certain inclination angle of the annular ring 4, so that the pressure at the position of the annular ring 4 is increased, and the increased pressure is applied to the annular ring 4, so that the boss 5 can be pressed on the pipe joint 2, and the self-tightening effect of the sealing structure is realized.
Further optimizing scheme, coupling 1, first ka tai 8, annular ring 4, boss 5 are integrated into one piece structure. Because the used material of coupling 1, first ka tai 8, annular ring 4, boss 5 is the same, for the convenience of processing and the fastness of each position connection, coupling 1, first ka tai 8, annular ring 4, boss 5 adopt integrated into one piece technology, the production of being convenient for.
Further optimize the scheme, leak hunting portion is including seting up cavity 11 in lock nut 3, and leak hunting hole 12 has been seted up to lock nut 3 surface, and leak hunting hole 12 is connected with cavity 11, and cavity 11 and annular circle 4 intercommunication.
The joint of the pipe joint 1, the pipe joint 2 and the locking nut 3 is provided with a clearance cavity 20, and the clearance cavity 20 is communicated with the cavity 11. A clearance cavity 20 is formed in the pipe joint 1, the pipe joint mouth 2 and the locking nut 3, if a first sealing ring band and a second sealing ring band formed by the annular ring 4 and the boss 5 have medium leakage, leaked media can enter the clearance cavity 20 and then enter a cavity 11 formed in the locking nut 3, the diameter of a leakage detection hole 12 is preferably 0.8mm, and the cavity 11 can be subjected to leakage detection through the leakage detection hole 12 to confirm the sealing effect.
According to a further optimized scheme, a first outer hexagon 13 is fixedly connected to the outer surface of the locking nut 3, a second outer hexagon 14 is fixedly connected to the outer surface of the pipe joint 2, and the second outer hexagon 14 is located on one side, far away from the locking nut 3, of the external thread 10. The first and second hexagonal holes 13 and 14 are provided for facilitating the coupling of the lock nut 3 with the coupling 2, and the male screw 10 is screwed with the lock screw 19 by applying a torque to the first and second hexagonal holes 13 and 14 when the lock nut 3 is screwed with the coupling 2. The first hexagonal socket 13 may be integrally formed with the lock nut 3, the second hexagonal socket 14 may be integrally formed with the coupling 2, and the outer surface of the lock nut 3 and the coupling 2 is not limited to the hexagonal structure, and the structure of the lock nut 3 and the outer surface of the coupling 2 may be a structure that can apply a torque.
According to a further optimized scheme, a first fuse hole 15 is formed in the first outer hexagonal surface 13, a second fuse hole 16 is formed in the second outer hexagonal surface 14, and the first fuse hole 15 and the second fuse hole 16 are fixedly connected through a fuse 17. After the two sealing ring belts are formed, a fuse 17 is used for protecting the space between the first fuse hole 15 and the second fuse hole 16, so that the structure is prevented from loosening.
The diameters of the first fuse hole 15 and the second fuse hole 16 are preferably 1.2mm, the diameter of the fuse 17 is preferably 0.8 mm-1 mm, and the substrate is made of stainless steel. The trace of the fuse 17 is fused along the tangential direction of the fused part, and the fuse is fused from the end of the second fuse hole 16, so that the pipe joint 1 can be prevented from moving radially; the fuse adopts a double-wire winding method, the distance between the fastened parts to be fused is not more than 50mm, the fuse 17 rotates clockwise at an angle of not more than 60 degrees when being tensioned, and continuously winds for 5mm to 10mm after penetrating through the first fuse hole 15; the angle between the trace of the fuse 17 and the direction of extension of the tube connector 2 after the fuse is opened should not be less than 45 °.
In a further optimized scheme, the annular ring 4 is an elastic annular ring. Because the annular ring 4 needs to be elastically deformed under the action of the boss 5, and in order to ensure the strength and provide sufficient specific sealing pressure, the annular ring 4 is made of metal with the yield strength of 750MPa or more, and can be made of deformed high-temperature alloy steel (such as GH625, GH37, GH99 and the like), and the like, and meanwhile, the base bodies of the pipe joint 2, the pipe joint 1 and the boss 5 are also made of metal with the yield strength of 750MPa or more, namely the pipe joint 2, the pipe joint 1, the annular ring 4 and the boss 5 are made of the same material, the structure is realized by machining, and the specific design size is generally determined by the use environment.
The working principle is as follows:
during initial installation, the locking nut 3 is sleeved on the pipe joint 1, the locking nut 3 is moved to enable the first clamping table 8 to be abutted against the second clamping table 9, then the locking thread 19 is contacted with the external thread 10, torque is applied to the first outer hexagonal surface 13 and the second outer hexagonal surface 14, the locking nut 3 is rotated, the pipe joint 1 is pushed by the locking nut 3 to move towards the pipe joint mouth 2, the annular ring 4 on the pipe joint 1 extends into the accommodating groove 18, when the lug boss 5 is abutted against the pipe joint mouth 2, a first sealing ring zone is formed, at the moment, the locking nut 3 is continuously fastened, the lug boss 5 is abutted against the pipe joint mouth 2 to reach a pre-tightening state, elastic deformation is generated, and then the annular ring 4 on the pipe joint 1 is abutted against the pipe joint mouth 2 to form a second sealing ring zone.
During the operating condition, after the internal medium acted on self-tightening formula pipeline connection structure for annular ring 4 on the coupling 1 is to radial expansion under internal pressure, and the specific pressure of first way sealing ring area increases, and seal structure realizes the self-tightening. If medium leaks during operation, the medium enters the clearance cavity 20 and then enters the cavity 11, leakage detection is carried out through the leakage detection hole 12, and the sealing effect is confirmed.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. A self-tightening pipeline connecting structure comprises a pipe joint (1), a pipe joint nozzle (2) and a locking nut (3) for connecting the pipe joint (1) and the pipe joint nozzle (2); it is characterized in that the preparation method is characterized in that,
one end of the pipe joint (1) is positioned in the pipe joint nozzle (2), one end of the pipe joint (1) is connected with the pipe joint nozzle (2) in a sealing mode through a sealing part, and the pipe joint (1) is communicated with the pipe joint nozzle (2) through the sealing part;
one end of the locking nut (3) is sleeved on the pipe joint (1), the other end of the locking nut (3) is connected with the pipe joint nozzle (2), a leakage detecting part is arranged in the locking nut (3), and the leakage detecting part is communicated with the sealing part;
the sealing part include with annular circle (4) of coupling (1) rigid coupling, annular circle (4) surface rigid coupling has boss (5), pipe connector mouth (2) are close to the one end of coupling (1) is provided with holds annular circle holding tank (18) of (4), the surface of annular circle (4) with boss (5) all pass through holding tank (18) with pipe connector mouth (2) butt.
2. The self-tightening type pipe connection structure according to claim 1, wherein: annular ring (4) are round platform type structure, annular ring (4) are close to the diameter that coupling (1) one end is not less than annular ring (4) are kept away from the diameter of coupling (1) one end, boss (5) are the arc structure, boss (5) are located annular ring (4) are kept away from one side of coupling (1).
3. The self-tightening type pipe connection structure according to claim 1, wherein: a first medium channel (6) is formed in the pipe joint (1), a second medium channel (7) is formed in the pipe joint (2), and the first medium channel (6) is communicated with the second medium channel (7) through the inner ring of the annular ring (4).
4. The self-tightening type pipe connection structure according to claim 1, wherein: the rigid coupling has first card platform (8) on coupling (1), annular ring (4) pass through first card platform (8) with coupling (1) rigid coupling, the rigid coupling has second card platform (9) in lock nut (3), second card platform (9) are located first card platform (8) are kept away from one side of pipe connector mouth (2), second card platform (9) with first card platform (8) butt, pipe connector mouth (2) surface is provided with external screw thread (10), lock nut (3) pass through external screw thread (10) with pipe connector mouth (2) threaded connection.
5. The self-tightening type pipe connection structure according to claim 4, wherein: the horizontal included angle between the first clamping table (8) and the annular ring (4) is 30-45 degrees.
6. The self-tightening type pipe connection structure according to claim 4, wherein: the pipe joint (1), the first clamping table (8), the annular ring (4) and the boss (5) are of an integrally formed structure.
7. The self-tightening type pipe connection structure according to claim 1, wherein: leak hunting portion is including seting up cavity (11) in lock nut (3), leak hunting hole (12) have been seted up to lock nut (3) surface, leak hunting hole (12) with cavity (11) are connected, cavity (11) with annular ring (4) intercommunication.
8. The self-tightening type pipe connection structure according to claim 4, wherein: the outer surface of the locking nut (3) is fixedly connected with a first outer hexagon (13), the outer surface of the pipe connector nozzle (2) is fixedly connected with a second outer hexagon (14), and the second outer hexagon (14) is located on one side, far away from the locking nut (3), of the external thread (10).
9. The self-tightening type pipe connection structure according to claim 8, wherein: the first outer hexagonal surface (13) is provided with a first fuse hole (15), the second outer hexagonal surface (14) is provided with a second fuse hole (16), and the first fuse hole (15) is fixedly connected with the second fuse hole (16) through a fuse (17).
10. The self-tightening type pipe connection structure according to claim 1, wherein: the annular ring (4) is an elastic annular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747478.0A CN113483167B (en) | 2021-07-02 | 2021-07-02 | Self-tightening type pipeline connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110747478.0A CN113483167B (en) | 2021-07-02 | 2021-07-02 | Self-tightening type pipeline connecting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113483167A true CN113483167A (en) | 2021-10-08 |
| CN113483167B CN113483167B (en) | 2022-04-12 |
Family
ID=77940065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110747478.0A Active CN113483167B (en) | 2021-07-02 | 2021-07-02 | Self-tightening type pipeline connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113483167B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977203A (en) * | 2021-11-11 | 2022-01-28 | 中国航发贵州黎阳航空动力有限公司 | Machining process of long spray rod assembly |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2305675A1 (en) * | 1975-03-26 | 1976-10-22 | Moureau Georges | Male and female screwed pipe connexion - has annular sealing ribs on tapered part of male member |
| US5489127A (en) * | 1993-08-25 | 1996-02-06 | Itt Corporation | Mounting apparatus with reduced resistance bead seal |
| CN201322150Y (en) * | 2008-12-06 | 2009-10-07 | 湖北航天技术研究院总体设计所 | A cap nut |
| CN106402530A (en) * | 2016-10-31 | 2017-02-15 | 北京宇航系统工程研究所 | Reusable sealing connection structure |
| CN106460754A (en) * | 2014-06-10 | 2017-02-22 | 丰田自动车株式会社 | Pipe connection structure |
| CN108368955A (en) * | 2015-12-18 | 2018-08-03 | 福士流体有限公司 | Tube connector |
| CN209026349U (en) * | 2018-09-19 | 2019-06-25 | 刘爽 | A kind of mounting device of high-pressure oil pipe |
-
2021
- 2021-07-02 CN CN202110747478.0A patent/CN113483167B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2305675A1 (en) * | 1975-03-26 | 1976-10-22 | Moureau Georges | Male and female screwed pipe connexion - has annular sealing ribs on tapered part of male member |
| US5489127A (en) * | 1993-08-25 | 1996-02-06 | Itt Corporation | Mounting apparatus with reduced resistance bead seal |
| CN201322150Y (en) * | 2008-12-06 | 2009-10-07 | 湖北航天技术研究院总体设计所 | A cap nut |
| CN106460754A (en) * | 2014-06-10 | 2017-02-22 | 丰田自动车株式会社 | Pipe connection structure |
| CN108368955A (en) * | 2015-12-18 | 2018-08-03 | 福士流体有限公司 | Tube connector |
| CN106402530A (en) * | 2016-10-31 | 2017-02-15 | 北京宇航系统工程研究所 | Reusable sealing connection structure |
| CN209026349U (en) * | 2018-09-19 | 2019-06-25 | 刘爽 | A kind of mounting device of high-pressure oil pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977203A (en) * | 2021-11-11 | 2022-01-28 | 中国航发贵州黎阳航空动力有限公司 | Machining process of long spray rod assembly |
| CN113977203B (en) * | 2021-11-11 | 2024-04-19 | 中国航发贵州黎阳航空动力有限公司 | Machining process of long spray rod assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113483167B (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SG179331A1 (en) | Pipe connector | |
| CN203979698U (en) | A kind of pipe coupling | |
| CN113483167B (en) | Self-tightening type pipeline connecting structure | |
| CN108006340A (en) | A kind of preparation method of the pipe seal part used under high temperature | |
| CN204533896U (en) | Locking casing type sealing joint, air brake piping and fuel pipe | |
| CN204962089U (en) | VSD cooling system sealing connecting structure | |
| US20140339818A1 (en) | Connection system for pipes in refrigeration plants | |
| CN214947222U (en) | Pipeline connecting structure | |
| CN110792802A (en) | One-piece type external thread ball valve | |
| CN212745522U (en) | Expansion type pipeline plugging device | |
| CN211649393U (en) | Turbulence-proof pipeline | |
| CN214093563U (en) | Online plugging device of pipeline | |
| CN212251551U (en) | Non-welded pipeline sealing joint | |
| CN113048298A (en) | Connecting device for hydraulic engineering pipeline and connecting method thereof | |
| CN212028802U (en) | Double-sealing pipe fitting | |
| CN220134913U (en) | Corrugated hose joint | |
| CN217482193U (en) | High-strength flared type taper thread straight-through pipe joint | |
| CN214618297U (en) | Pipe connector and aeroengine | |
| CN215928703U (en) | Free device for connecting oil pipes | |
| CN220792388U (en) | Novel welding flange | |
| CN213982357U (en) | Pipeline joint | |
| CN106195485A (en) | Sealing pipeline connector and hydraulic system | |
| CN216768618U (en) | Flange encircles connection tetrafluoro straight tube | |
| CN215334950U (en) | Stainless steel corrugated pipe anti-drop joint for gas delivery | |
| CN218914092U (en) | Quick-fit universal pipe joint and connecting assembly thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |