CN115095725B - Multi-level sealing structure of high-pressure oil pipe - Google Patents
Multi-level sealing structure of high-pressure oil pipe Download PDFInfo
- Publication number
- CN115095725B CN115095725B CN202210779983.8A CN202210779983A CN115095725B CN 115095725 B CN115095725 B CN 115095725B CN 202210779983 A CN202210779983 A CN 202210779983A CN 115095725 B CN115095725 B CN 115095725B
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- Prior art keywords
- sealing
- pipe
- connecting pipe
- pressure oil
- oil pipe
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 186
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 210000003811 finger Anatomy 0.000 claims 1
- 210000003813 thumb Anatomy 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 123
- 239000010710 diesel engine oil Substances 0.000 abstract description 2
- 239000002283 diesel fuel Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000010705 motor oil Substances 0.000 description 5
- 230000008602 contraction Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
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- 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
- F16L19/005—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 comprising locking means for the threaded member
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- 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
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- 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0225—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
Abstract
The invention provides a multi-level sealing structure of a high-pressure oil pipe, relates to the technical field of oil pipe sealing, and solves the problem of diesel engine oil mixing caused by failure of the pipe end structure of the high-pressure oil pipe; comprises a threaded connecting pipe; two sections of internal threads are formed on the inner side of the threaded connecting pipe; the oil sprayer connecting pipe is arranged on the inner side of the threaded connecting pipe; the sealing ring is arranged at the outer side of the fuel injector connecting pipe; the high-pressure oil pipe is arranged on the inner side of the threaded connecting pipe; the support tube is arranged on the inner side of the high-pressure oil pipe; the high-pressure oil pipe is rigidly supported through the supporting pipe, the threaded sealing seat is arranged at the end part of the threaded connecting pipe and clamps the high-pressure oil pipe, the positioning block forms secondary sealing on the high-pressure oil pipe, the sealing ring forms tertiary sealing to seal the threaded connecting pipe and the oil injector connecting pipe, and the threaded connecting sleeve forms quaternary sealing on the high-pressure oil pipe.
Description
Technical Field
The invention belongs to the technical field of oil pipe sealing, and particularly relates to a multi-level sealing structure of a high-pressure oil pipe.
Background
The oil pipe is the pipeline of connecting oil pump and engine fuel sprayer, provides the fuel through oil pipe, and oil pipe provides helping hand oil for the steering engine to reach the purpose that alleviates steering resistance, oil pipe divide into low pressure and high pressure, and the junction of high pressure oil pipe needs absolute seal when using, for making the better seal of oil pipe's joint, need carry out multilayer seal to oil pipe, and the high pressure oil pipe multilevel seal structure that says so more specifically.
The traditional high-pressure oil pipe sealing structure is conical surface and conical surface sealing, and is sealed with the conical surface through the sphere, and the sealing structure of high-pressure oil pipe is sealed for the individual layer, and is sealed to high-pressure oil pipe extrusion through a threaded connection sleeve, in case high-pressure oil pipe sealing failure, can cause diesel oil to mix in the engine oil, cause the engine oil to be diluted, viscosity reduction, engine oil pressure decline, lubrication is insufficient, destroys lubrication effect, draws jar and draws the tile appear in the light person, and the heavy person appears embracing the tile phenomenon, and the high-pressure oil pipe can warp after receiving the extrusion force simultaneously, influences high-pressure oil pipe's sealed effect.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multi-level sealing structure of a high-pressure oil pipe, which aims to solve the problem that the sealing structure of the high-pressure oil pipe is single-layer sealing, the high-pressure oil pipe is extruded and sealed through a threaded connecting sleeve, and the high-pressure oil pipe is deformed after being subjected to extrusion force.
The invention discloses a multi-level sealing structure of a high-pressure oil pipe, which is realized by the following specific technical means:
a multi-level sealing structure of a high-pressure oil pipe comprises a threaded connecting pipe;
two sections of internal threads are formed on the inner side of the threaded connecting pipe; the oil sprayer connecting pipe is arranged on the inner side of the threaded connecting pipe;
the sealing ring is arranged at the outer side of the fuel injector connecting pipe;
the high-pressure oil pipe is arranged on the inner side of the threaded connecting pipe;
the support tube is arranged on the inner side of the high-pressure oil pipe, and a baffle ring is arranged at the end part of the inner side of the high-pressure oil pipe; the sealing bush is arranged between the threaded connecting pipe and the high-pressure oil pipe;
the threaded sealing seat is arranged at the end part of the threaded connecting pipe.
Preferably, the threaded connection pipe comprises:
the positioning block is arranged at the inner side of the threaded connecting pipe, the positioning block and the sealing bush are provided with conical surfaces, the positioning block and the sealing bush are in close contact through the conical surfaces, and the inner side of the sealing bush is in contact with the outer wall of the high-pressure oil pipe;
the oil draining grooves are formed in the inner side of the positioning block in an annular array shape, and three oil draining grooves are formed;
the extrusion block is provided with an inclined plane with a conical structure, the extrusion block is arranged at the outer side of the threaded connecting pipe, and the extrusion block is contacted with the inner wall of the threaded sealing seat;
the locking grooves are arranged on the outer side of the extrusion block in an arc array shape, and the locking grooves are of V-shaped structures.
Preferably, the oil sprayer connecting pipe is provided with an annular groove, the sealing ring is clamped in the annular groove of the oil sprayer connecting pipe, and two side surfaces of the sealing ring are provided with second annular grooves.
Preferably, the inner side of the sealing ring is provided with a reinforcing ring, the outer side and the inner side of the sealing ring are both provided with first annular grooves, the cross section of each first annular groove is of a U-shaped structure, and the sealing ring is contacted with the inner wall of the threaded connecting pipe.
Preferably, the end part of the high-pressure oil pipe is provided with a sealing head, the sealing head is of a conical hollow structure, the sealing head is communicated with the high-pressure oil pipe, the sealing head is respectively contacted with the oil sprayer connecting pipe and the sealing bush, the outer side of the sealing head is provided with a sealing ring, the oil sprayer connecting pipe and the sealing bush are provided with sealing grooves, and the sealing rings of the sealing head are clamped in the sealing grooves of the oil sprayer connecting pipe.
Preferably, the outside of stay tube has the lock ring, and high pressure oil pipe's inboard has seted up the ring channel, and the stay tube passes through the lock ring joint in high pressure oil pipe's inboard.
Preferably, the connecting pipe of the fuel injector is provided with an external thread, the inner side of the connecting pipe of the fuel injector is provided with an inclined plane with a conical structure, the threaded sealing seat is provided with a threaded connecting sleeve, and the inner side of the threaded connecting sleeve is contacted with the outer wall of the high-pressure oil pipe.
Preferably, the screw thread sealing seat includes:
the screwing protrusion is in a hexagonal structure and is arranged on the outer side of the thread sealing seat;
the extension block is arranged at the outer side of the thread sealing seat;
the locking block is arranged at the bottom of the extending block, the locking block is of a V-shaped structure, the locking block is clamped at the inner side of the locking groove, and the outer side of the extending block is provided with a snapping block.
Compared with the prior art, the invention has the following beneficial effects:
1. the sealing head is locked through the sealing bush, so that the sealing head locks the high-pressure oil pipe, the oil sprayer connecting pipe is screwed through threads, axial force is applied to the high-pressure oil pipe, plastic deformation is generated in the upsetting process of the high-pressure oil pipe, annular sealing diesel oil is formed, primary sealing of the high-pressure oil pipe is formed between the high-pressure oil pipe and the oil sprayer connecting pipe, the high-pressure oil pipe is rigidly supported through the supporting pipe, the phenomenon that the high-pressure oil pipe is deformed by the pressing force is avoided, and meanwhile, the outer side of the high-pressure oil pipe can be better sealed.
2. The end part of the threaded connecting pipe is provided with a threaded sealing seat in threaded connection, after the threaded sealing seat is installed, the extrusion block and the threaded sealing seat form extrusion force, so that the threaded sealing seat tightly presses the positioning block, the positioning block clamps the high-pressure oil pipe, and the positioning block forms secondary sealing for the high-pressure oil pipe.
3. The inboard of screw connection pipe is provided with three oil drain groove, and after the sprayer connecting pipe seal became invalid, the sealing washer can produce sealed effect, and diesel oil can get into in the oil drain groove, effectually separates diesel oil and engine oil, seals between screw connection pipe and the sprayer connecting pipe through the sealing washer, and the sealing washer forms tertiary seal and seals screw connection pipe and sprayer connecting pipe.
4. The locking block locks the thread sealing seat, so that loosening of the thread sealing seat is avoided, the thread connecting sleeve of the thread sealing seat is contacted with the outer wall of the high-pressure oil pipe, the thread connecting sleeve forms four-stage sealing on the high-pressure oil pipe, and the internal thread of the thread connecting pipe locks the thread sealing seat.
Drawings
FIG. 1 is a schematic view of the shaft side structure of the assembled body of the present invention;
FIG. 2 is a schematic illustration of the semi-sectional axial side structure of the present invention;
FIG. 3 is a schematic diagram of the front view of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic view of the split shaft side structure of the main body of the present invention;
FIG. 5 is a schematic view of the split shaft side structure of the body of the present invention;
FIG. 6 is a schematic view of the axial side of the elevation view of FIG. 5 in accordance with the present invention;
FIG. 7 is a schematic view of a split shaft side structure of the body of the present invention after half-section;
FIG. 8 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
FIG. 9 is an enlarged schematic view of the structure of FIG. 2B in accordance with the present invention;
FIG. 10 is an enlarged schematic view of the structure of FIG. 2 at C in accordance with the present invention;
FIG. 11 is an enlarged schematic view of the structure of FIG. 5D according to the present invention;
fig. 12 is an enlarged schematic view of the structure of fig. 6 at E according to the present invention.
In the figure, the correspondence between the component names and the drawing numbers is:
1. a threaded connecting pipe; 101. a positioning block; 102. an oil drain groove; 103. extruding a block; 104. a locking groove; 2. a fuel injector connecting pipe; 3. a seal ring; 301. a reinforcing ring; 4. a high pressure oil pipe; 401. a sealing head; 5. a support tube; 6. a seal bushing; 7. a thread seal seat; 701. twisting the bulge; 702. an extension block; 703. and a locking block.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples:
as shown in fig. 1 to 12:
the invention provides a multi-level sealing structure of a high-pressure oil pipe, which comprises a threaded connecting pipe 1;
two sections of internal threads are formed on the inner side of the threaded connecting pipe 1, the threaded connecting pipe 1 comprises a positioning block 101, an oil drain groove 102 and an extrusion block 103, the positioning block 101 is arranged on the inner side of the threaded connecting pipe 1, the positioning block 101 and the sealing bush 6 are provided with conical surfaces, the positioning block 101 and the sealing bush 6 are in close contact with each other through the conical surfaces, the inner side of the sealing bush 6 is in contact with the outer wall of the high-pressure oil pipe 4, the sealing bush 6 seals the positioning block 101 and the high-pressure oil pipe 4, the oil drain groove 102 is formed on the inner side of the positioning block 101 in an annular array, three oil drain grooves 102 are formed in total, after the sealing of the oil injector connecting pipe 2 fails, the sealing ring 3 has a sealing effect, diesel oil enters the oil drain groove 102, the diesel oil is effectively isolated from engine oil, the extrusion block 103 is provided with an inclined surface with a conical structure, the extrusion block 103 is arranged on the outer side of the threaded connecting pipe 1, the extrusion block 103 is in contact with the inner wall of the threaded sealing seat 7, after the threaded sealing seat 7 is installed, the extrusion block 103 and the threaded sealing seat 7 forms extrusion force, so that the threaded sealing seat 7 compresses the positioning block 101, the positioning block 2 is clamped, the high-pressure oil pipe 4, the positioning block 103 is in a circular arc shape, the sealing block 104 is formed on the outer side of the sealing groove 104, and the locking groove 104 is locked in a locking structure, and the locking groove is formed in a locking mode, and the locking groove is formed in the shape, and the shape of the locking groove 104;
the oil sprayer connecting pipe 2, the oil sprayer connecting pipe 2 is installed in the inner side of the threaded connecting pipe 1, the oil sprayer connecting pipe 2 is provided with an annular groove, the sealing ring 3 is clamped in the annular groove of the oil sprayer connecting pipe 2, therefore, the annular groove of the oil sprayer connecting pipe 2 locks the sealing ring 3, the two side faces of the sealing ring 3 are provided with second annular grooves, the second annular grooves deform after being stressed, the sealing ring 3 is firmly clamped in the annular groove of the oil sprayer connecting pipe 2, meanwhile, the problem of thermal expansion and cold contraction of the sealing ring 3 is solved by the second annular grooves, and the sealing ring 3 forms three-level sealing to seal the threaded connecting pipe 1 and the oil sprayer connecting pipe 2;
the sealing ring 3 is arranged on the outer side of the fuel injector connecting pipe 2, the reinforcing ring 301 is arranged on the inner side of the sealing ring 3, the reinforcing ring 301 is used for carrying out hard support on the sealing ring 3, the phenomenon that the sealing ring 3 cannot rebound due to stress deformation is avoided, the outer side and the inner side of the sealing ring 3 are both provided with first annular grooves, the cross section of each first annular groove is of a U-shaped structure, the sealing ring 3 is in contact with the inner wall of the threaded connecting pipe 1, the first annular grooves enable the sealing ring 3 to better seal the threaded connecting pipe 1 and the fuel injector connecting pipe 2, and meanwhile the first annular grooves block exuded oil, so that the sealing performance of the sealing ring 3 is enhanced;
the high-pressure oil pipe 4 is arranged on the inner side of the threaded connecting pipe 1, the end part of the high-pressure oil pipe 4 is provided with a sealing head 401, the sealing head 401 is of a conical hollow structure, the sealing head 401 is communicated with the high-pressure oil pipe 4, primary sealing of the high-pressure oil pipe 4 is formed between the sealing head 401 and the oil sprayer connecting pipe 2, the sealing head 401 is respectively contacted with the oil sprayer connecting pipe 2 and the sealing bush 6, the sealing bush 6 locks the sealing head 401, so that the sealing head 401 locks the high-pressure oil pipe 4, the outer side of the sealing head 401 is provided with a sealing ring, the oil sprayer connecting pipe 2 and the sealing bush 6 are provided with sealing grooves, the sealing ring of the sealing head 401 is clamped in the sealing groove of the oil sprayer connecting pipe 2, and at the moment, the sealing ring further seals the sealing head 401, and the end part of the high-pressure oil pipe 4 is better sealed by the sealing head 401;
the support tube 5 is arranged on the inner side of the high-pressure oil pipe 4, and a baffle ring is arranged at the end part of the inner side of the high-pressure oil pipe 4, so that the support tube 5 is more firmly arranged on the inner side of the high-pressure oil pipe 4;
a sealing bush 6, the sealing bush 6 is installed between the screwed connection pipe 1 and the high-pressure oil pipe 4;
the screw thread seal seat 7, screw thread seal seat 7 installs the tip at screw thread connecting pipe 1, the external screw thread has been seted up to the sprayer connecting pipe 2, the external screw thread locks sprayer connecting pipe 2 in the inboard of screw thread connecting pipe 1, the inboard of sprayer connecting pipe 2 has the inclined plane of a conical structure, conical structure's inclined plane makes sprayer connecting pipe 2 better seal the tip of high-pressure fuel pipe 4, screw thread seal seat 7 has a screw thread adapter sleeve, the inboard of screw thread adapter sleeve contacts with the outer wall of high-pressure fuel pipe 4, make the screw thread adapter sleeve form the level four sealings to high-pressure fuel pipe 4, screw thread seal seat 7 is locked to screw thread seal seat 7 to the screw thread adapter sleeve, screw thread seal seat 7 is including twisting protruding 701, extension piece 702 and locking piece 703, twisting protruding 701 is hexagonal structure, twisting protruding 701 in the outside of screw thread seal seat 7, the hexagonal structure who twists protruding 701 is convenient to be connected with spanner 701, extension piece 702 is in the outside of screw thread seal seat 7, extension piece 702 extends locking piece 703, locking piece 703 is in the bottom of extension piece 702, locking piece 703 is the bottom of extension piece 702, locking piece V-shaped piece 703 is the locking piece is easy to draw off the side of thread seal seat 7, the locking piece is broken off the locking piece is convenient to be moved to the screw thread seal seat 7, the outside, the locking piece is broken off.
In another embodiment, the outer side of the fuel injector connecting pipe 2 is provided with a friction protrusion, and the fuel injector connecting pipe 2 is conveniently rotated by the friction protrusion.
Specific use and action of the embodiment:
when the high-pressure oil pipe sealing device is used, firstly, the supporting pipe 5 is arranged on the inner side of the high-pressure oil pipe 4 to finish the hard supporting of the high-pressure oil pipe 4, then the sealing bush 6 is arranged on the outer side of the high-pressure oil pipe 4, the high-pressure oil pipe 4 and the sealing bush 6 are arranged on the inner side of the threaded connecting pipe 1 to finish the mounting of the high-pressure oil pipe 4, then the sealing ring 3 is arranged in an annular groove of the oil sprayer connecting pipe 2, the oil sprayer connecting pipe 2 is arranged on the inner side of the threaded connecting pipe 1 through external threads, at the moment, the sealing head 401 is respectively contacted with the oil sprayer connecting pipe 2 and the sealing bush 6, the sealing bush 6 locks the sealing head 401, so that the sealing head 401 locks the high-pressure oil pipe 4, primary sealing of the high-pressure oil pipe 4 is formed between the sealing head 401 and the oil sprayer connecting pipe 2, after the sealing of the oil sprayer connecting pipe 2 fails, the sealing ring 3 can produce sealing effect, diesel oil can enter the oil drain groove 102 to effectively isolate diesel oil from engine oil;
the second annular groove of the sealing ring 3 can deform after being stressed, so that the sealing ring 3 is firmly clamped in the annular groove of the oil sprayer connecting pipe 2, meanwhile, the problem of thermal expansion and cold contraction of the sealing ring 3 is solved by the second annular groove, the sealing ring 3 is contacted with the inner wall of the threaded connecting pipe 1, and the sealing ring 3 forms three-stage sealing to seal the threaded connecting pipe 1 and the oil sprayer connecting pipe 2;
the screw thread sealing seat 7 is arranged at the end part of the screw thread connecting pipe 1 through external threads, when the screw thread sealing seat 7 is arranged, the screwing protrusion 701 is screwed through a spanner, after the screw thread sealing seat 7 is arranged, the extrusion block 103 and the screw thread sealing seat 7 form extrusion force, so that the screw thread sealing seat 7 compresses the positioning block 101, the positioning block 101 clamps the high-pressure oil pipe 4, and the positioning block 101 forms secondary sealing on the high-pressure oil pipe 4;
after the screw thread sealing seat 7 is installed, the locking block 703 is clamped on the inner side of the locking groove 104, the locking block 703 locks the screw thread sealing seat 7, loosening of the screw thread sealing seat 7 is avoided, when the screw thread sealing seat 7 is dismounted, the extending block 702 is upwards broken by the breaking block, then the screw thread sealing seat 7 is dismounted, the screw thread connecting sleeve of the screw thread sealing seat 7 is contacted with the outer wall of the high-pressure oil pipe 4, the screw thread connecting sleeve forms four-stage sealing on the high-pressure oil pipe 4, and the internal thread of the screw thread connecting pipe 1 locks the screw thread sealing seat 7.
The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. A high-pressure oil pipe multilevel sealing structure is characterized in that: comprises a threaded connecting pipe (1);
two sections of internal threads are formed in the inner side of the threaded connecting pipe (1), the threaded connecting pipe (1) comprises a positioning block (101), oil drain grooves (102), extrusion blocks (103) and locking grooves (104), the positioning block (101) is arranged in the inner side of the threaded connecting pipe (1), the positioning block (101) and the sealing bush (6) are provided with conical surfaces, the positioning block (101) and the sealing bush (6) are in tight contact through the conical surfaces, the inner side of the sealing bush (6) is in contact with the outer wall of the high-pressure oil pipe (4), the oil drain grooves (102) are formed in the inner side of the positioning block (101) in an annular array shape, the number of the oil drain grooves (102) is three, the extrusion blocks (103) are provided with inclined surfaces in a conical structure, the extrusion blocks (103) are arranged on the outer side of the threaded connecting pipe (1), the extrusion blocks (103) are in contact with the inner wall of the threaded sealing seat (7), the locking grooves (104) are formed in an arc array shape in the outer side of the extrusion blocks (103), and the locking grooves (104) are in a V-shaped structure; the oil sprayer connecting pipe (2), the oil sprayer connecting pipe (2) is arranged on the inner side of the threaded connecting pipe (1);
the sealing ring (3) is arranged at the outer side of the fuel injector connecting pipe (2);
the high-pressure oil pipe (4) is arranged on the inner side of the threaded connecting pipe (1);
the support tube (5) is arranged on the inner side of the high-pressure oil pipe (4), and a baffle ring is arranged at the end part of the inner side of the high-pressure oil pipe (4);
a sealing bush (6), wherein the sealing bush (6) is arranged between the threaded connecting pipe (1) and the high-pressure oil pipe (4);
screw thread seal seat (7), screw thread seal seat (7) install the tip at threaded connection pipe (1), screw thread seal seat (7) are including twisting protruding (701), extension piece (702), locking piece (703), twist protruding (701) and be hexagonal structure, twist protruding (701) in the outside of screw thread seal seat (7), extension piece (702) are in the outside of screw thread seal seat (7), locking piece (703) are in the bottom of extension piece (702), locking piece (703) are V-arrangement structure, locking piece (703) joint is in the inboard of locking groove (104), the outside of extension piece (702) has one to break the piece off with fingers and thumb.
2. A multi-stage sealing structure for high pressure oil pipe as claimed in claim 1, wherein: the oil sprayer connecting pipe (2) is provided with an annular groove, the sealing ring (3) is clamped in the annular groove of the oil sprayer connecting pipe (2), and two side surfaces of the sealing ring (3) are provided with second annular grooves.
3. A multi-stage sealing structure for high pressure oil pipe as claimed in claim 1, wherein: the inner side of the sealing ring (3) is provided with a reinforcing ring (301), the outer side and the inner side of the sealing ring (3) are provided with first annular grooves, the cross section of each first annular groove is of a U-shaped structure, and the sealing ring (3) is in contact with the inner wall of the threaded connecting pipe (1).
4. A multi-stage sealing structure for high pressure oil pipe as claimed in claim 1, wherein: the end of the high-pressure oil pipe (4) is provided with a sealing head (401), the sealing head (401) is of a conical hollow structure, the sealing head (401) is communicated with the high-pressure oil pipe (4), the sealing head (401) is respectively contacted with the oil sprayer connecting pipe (2) and the sealing bush (6), the outer side of the sealing head (401) is provided with a sealing ring, the oil sprayer connecting pipe (2) and the sealing bush (6) are provided with sealing grooves, and the sealing ring of the sealing head (401) is clamped in the sealing grooves of the oil sprayer connecting pipe (2).
5. A multi-stage sealing structure for high pressure oil pipe as claimed in claim 1, wherein: the outside of stay tube (5) has the lock ring, and the ring channel has been seted up to the inboard of high-pressure oil pipe (4), and stay tube (5) pass through the lock ring joint in the inboard of high-pressure oil pipe (4).
6. A multi-stage sealing structure for high pressure oil pipe as claimed in claim 1, wherein: the oil sprayer connecting pipe (2) is provided with external threads, the inner side of the oil sprayer connecting pipe (2) is provided with an inclined plane with a conical structure, the threaded sealing seat (7) is provided with a threaded connecting sleeve, and the inner side of the threaded connecting sleeve is contacted with the outer wall of the high-pressure oil pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210779983.8A CN115095725B (en) | 2022-07-04 | 2022-07-04 | Multi-level sealing structure of high-pressure oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210779983.8A CN115095725B (en) | 2022-07-04 | 2022-07-04 | Multi-level sealing structure of high-pressure oil pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115095725A CN115095725A (en) | 2022-09-23 |
| CN115095725B true CN115095725B (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210779983.8A Active CN115095725B (en) | 2022-07-04 | 2022-07-04 | Multi-level sealing structure of high-pressure oil pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN115095725B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN104197019A (en) * | 2014-08-15 | 2014-12-10 | 哈尔滨东安发动机（集团）有限公司 | Multi-sealing structure |
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| CN107061885A (en) * | 2017-06-21 | 2017-08-18 | 海盐县秦山液压机械厂 | A kind of high leakproofness ferrule-type compression joint |
| CN107288788A (en) * | 2017-06-30 | 2017-10-24 | 东风（十堰）汽车管业有限公司 | A kind of design method of high-pressure oil pipe structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2469353A1 (en) * | 2004-05-31 | 2005-11-30 | Masco Canada Limited | Pipe coupling |
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| DE19817633A1 (en) * | 1998-04-21 | 1999-11-04 | Ruberg Mischtechnik Kg | Ring nut for pipe union made in two interlocking halves |
| DE10225960C1 (en) * | 2002-06-11 | 2003-10-02 | Dunlop Hiflex Gmbh | Tube fitting, for high pressure, uses has sealing head with male fitting having balancing bore forming flow channel for medium passing through fitting on low pressure side of sealing device provided on sealing head |
| CN102840402A (en) * | 2011-10-27 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Anti-leakage pipeline joint |
| CN202708381U (en) * | 2012-07-18 | 2013-01-30 | 东风（十堰）汽车管业有限公司 | End structure of high-pressure oil pipe |
| CN104675593A (en) * | 2013-11-28 | 2015-06-03 | 嘉兴市凯斯通讯器材有限公司 | High-pressure oil pipe |
| CN104197019A (en) * | 2014-08-15 | 2014-12-10 | 哈尔滨东安发动机（集团）有限公司 | Multi-sealing structure |
| CN204961138U (en) * | 2015-07-17 | 2016-01-13 | 河北华北柴油机有限责任公司 | High pressure fuel pipe pipe end structure |
| CN107061885A (en) * | 2017-06-21 | 2017-08-18 | 海盐县秦山液压机械厂 | A kind of high leakproofness ferrule-type compression joint |
| CN107288788A (en) * | 2017-06-30 | 2017-10-24 | 东风（十堰）汽车管业有限公司 | A kind of design method of high-pressure oil pipe structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115095725A (en) | 2022-09-23 |
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