CN115507235A - Telescopic short section and manifold system - Google Patents
Telescopic short section and manifold system Download PDFInfo
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- CN115507235A CN115507235A CN202211192557.0A CN202211192557A CN115507235A CN 115507235 A CN115507235 A CN 115507235A CN 202211192557 A CN202211192557 A CN 202211192557A CN 115507235 A CN115507235 A CN 115507235A
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- 238000007789 sealing Methods 0.000 claims abstract description 109
- 239000012530 fluid Substances 0.000 claims abstract description 47
- 238000013016 damping Methods 0.000 claims description 26
- 230000001502 supplementing effect Effects 0.000 claims description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 12
- 241001330002 Bambuseae Species 0.000 claims description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 12
- 239000011425 bamboo Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 17
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 description 6
- 210000002445 nipple Anatomy 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000002310 elbow joint Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
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
- F16L43/00—Bends; Siphons
- F16L43/02—Bends; Siphons adapted to make use of special securing means
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
- F16L27/127—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position
- F16L27/1274—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position by means of a swivel nut
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to a telescopic short section which comprises a shell and a core barrel, wherein a fluid channel and a moving channel are arranged in the shell, the fluid channel is a straight channel or a bent channel, the moving channel is a straight channel and is communicated with the fluid channel, an internal thread is arranged at one end of the shell, which is provided with the moving channel, a pair of bosses are arranged on the outer wall of the core barrel at intervals, a combining cap is sleeved outside the core barrel between the bosses, an external thread is arranged on the combining cap, one end of the core barrel is inserted into the moving channel, the external thread is matched with the internal thread to form thread pair connection, the core barrel can rotate and axially move relative to the shell, and the core barrel is in sealing fit with the shell through a sealing element. When the distance is inappropriate during the installation of the manifold system, the problem of high requirement on the position accuracy of the equipment by the traditional manifold system connection can be effectively solved without repeatedly adjusting the equipment placing position and the manifold specification, and the convenience of the connection is ensured; the telescopic short section has the advantages of simple structure, convenience in maintenance and easiness in operation.
Description
Technical Field
The invention relates to the technical field of oil and gas drilling equipment, in particular to a telescopic short section and a manifold system.
Background
The high-pressure manifold system is suitable for special equipment for collecting and conveying well cementation fluid and fracturing fluid discharged by a well cementation pump and a fracturing pump and high-pressure fluid returned by a stratum. When the device works, the pump outlet is connected with the main pipeline through a high-pressure movable elbow, a high-pressure pipeline and other manifold systems. Because the length of the manifold system is fixed when leaving the factory, in the process of connecting the manifold system, the condition that the length of the pipeline of the intermediate connection section is not proper often occurs, the adjustment range of the manifold system is limited, the placing position of the equipment and the specification of the manifold can be repeatedly adjusted due to improper distance, the use is very inconvenient, and the installation efficiency of the manifold system is reduced.
Meanwhile, the existing mode adopts union threaded connection, hammering and tightening are needed during installation, damage and fracture of the thread are prone to occurring under the operating condition, safety performance is poor, and the pipe manifold system is limited by the specification and size of the thread, the drift diameter size of the pipe manifold system is small, and the capacity of conveying fluid through the pipeline is too low.
Therefore, there is a need for a solution to solve the above problems.
Disclosure of Invention
The invention aims to: the length of the manifold system is fixed when leaving the factory to the prior art existence, in manifold system connection process, the improper condition of intermediate junction section pipeline length often appears, manifold system's adjustment range is limited, often can adjust equipment locating place and manifold specification repeatedly because of improper distance, it is very inconvenient to use, the problem of manifold system installation efficiency has been reduced, a flexible nipple joint and manifold system are provided, effectively solve the problem that traditional manifold system connection required high equipment position accuracy, guarantee the convenience of connecting.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a flexible nipple joint, includes shell and core section of thick bamboo, be equipped with fluid passage and removal channel in the shell, fluid passage is straight passageway or curved passageway, removal channel be straight passageway and with the fluid passage intercommunication, the shell sets up removal channel's one end is equipped with the internal thread, the interval is equipped with a pair of abrupt platform on the core section of thick bamboo outer wall, between the abrupt platform core section of thick bamboo overcoat is equipped with and the cap, and be equipped with the external screw thread on the cap, the one end of core section of thick bamboo is inserted removal channel, the external screw thread with the interior screw-thread fit forms screw thread pair and is connected, the core section of thick bamboo can be relative the shell is rotatory and axial displacement, the core section of thick bamboo with the shell passes through sealing element seal fit.
By adopting the telescopic short section, the merging cap is limited through the pair of bosses, the telescopic length of the core barrel relative to the shell is limited, the position of the merging cap relative to the shell is adjusted through the thread pair connection of the merging cap and the shell, when the distance is inappropriate during the installation of a manifold system, the device placement position and the manifold specification do not need to be repeatedly adjusted, the matching length of the shell and the core barrel is changed through rotating the merging cap, the length of the telescopic short section can be changed, the problem of high requirement of the traditional manifold system connection on the device position accuracy can be effectively solved, and the connection convenience is ensured; the fluid channel of the straight channel or the bent channel is arranged, so that the corresponding shell is a direct joint or a bent joint, and the shell can be matched with wider use requirements in a manifold system; the telescopic short section has the advantages of simple structure, convenience in maintenance, easiness in operation and long service life.
Preferably, the diameter of the moving passage is larger than the diameter of the fluid passage, and the inner diameter of the cartridge is matched with the diameter of the fluid passage.
Preferably, the inner wall of the moving channel is provided with a sealing step group, the sealing step group is positioned between the internal thread and the fluid channel, the outer wall of the cartridge is provided with a sealing surface matched with the sealing step group, the sealing element is arranged between the sealing step group and the sealing surface, and the length of the sealing surface is greater than that of the sealing step group.
Further preferably, the diameter of the internal thread is larger than the maximum diameter of the sealing step group.
Further preferably, the sealing step group comprises a first sealing step and a second sealing step, the first sealing step is close to the fluid passage, the second sealing step is close to the internal thread, and the length of the internal thread is smaller than that of the first sealing step.
Further preferably, the diameter of the second sealing step is larger than the diameter of the first sealing step.
Further preferably, an observation hole is formed between the second sealing step and the internal thread, the observation hole is communicated with the inner wall and the outer wall of the shell, and the observation hole is used for judging whether the sealing element fails in sealing through leakage.
Further preferably, the sealing element comprises a high-pressure seal and at least one sealing ring, the sealing ring being arranged between the first sealing step and the sealing surface, the high-pressure seal being arranged between the second sealing step and the sealing surface.
Further preferably, a sealing groove is formed in the sealing surface, the number of the sealing grooves is matched with the number of the sealing rings, and the sealing groove is used for arranging the sealing rings.
Further preferably, the telescopic short section further comprises a pressing cap, the pressing cap is connected to the inner wall of the moving channel through a thread pair, and the pressing cap is used for pressing the high-pressure sealing element.
Further preferably, one end face of the pressing cap is provided with a protrusion, the protrusion is matched with the second sealing step, and the pressing cap presses the high-pressure sealing element through the protrusion.
By adopting the structure, a mounting groove is formed between the second sealing step and the protrusion, the high-pressure sealing element is placed in the mounting groove, the size of the mounting groove is adjusted by adjusting the tightness degree of the pressing cap, so that the high-pressure sealing element is deformed in the mounting groove and can be well abutted against the sealing surface and the second sealing step, static sealing in a static state and dynamic sealing in a rotating state are met, and high-pressure fluid in an inner cavity is prevented from leaking.
Further preferably, the other end surface of the pressing cap opposite to the protrusion is provided with a plurality of grooves, the pressing cap is disassembled in the shell by screwing the grooves through tool cooperation, and the pressing cap is screwed to press the high-pressure sealing piece to seal the shell and the core barrel.
Preferably, at least one end of the nut is matched with a shock absorption element, and the shock absorption element is abutted and arranged on the boss.
By adopting the structure, after the length of the telescopic short section is adjusted to meet the requirement and the telescopic short section is connected with a manifold system, when the manifold vibrates, the axial force generated by the vibration acts on the damping element, so that the combined cap is driven to rotate relative to the shell, the length of the telescopic short section is finely adjusted, and the vibration of the high-pressure manifold is reduced or eliminated.
Further preferably, the shock absorbing element is a spring, an elastic pad or a damping block.
Further preferably, the outer walls of the core cylinders at the two ends of the combining cap are respectively provided with a core supplementing groove and an installation step, the core supplementing groove is provided with a core supplementing in a matching manner, the core cylinder between the core supplementing groove and the installation step is provided with the damping element, one end of the damping element abuts against one end of the combining cap, and the other end of the damping element abuts against the installation step and/or the core supplementing groove, namely, the core supplementing groove and the installation step form a pair of bosses.
Further preferably, the union cap is provided with a protruding part which is matched with the end part of the outer shell, the protruding part is used for controlling the length of the union cap extending into the moving channel, so that the external thread and the internal thread are protected from being damaged, the core barrel is stable in rotation and axial movement relative to the outer shell, and meanwhile, the protruding part is arranged to facilitate the twisting of the union cap and the length adjustment of the telescopic short section.
Preferably, the telescopic short section further comprises a flange ring, the other end of the core barrel is inserted into the inner ring surface of the flange ring, the core barrel can rotate relative to the flange ring, and a flange plate is arranged at one end, provided with the fluid channel, of the shell.
By adopting the structure, the flange ring and the flange plate are arranged at the end part of the shell, the existing union threaded connection is changed into flange connection, the size of the high-pressure manifold is increased, the efficiency of the high-pressure manifold for conveying fluid is effectively improved, and flexible expansion and reliable connection can be realized at the same time.
Further preferably, a plurality of balls are uniformly distributed along the circumferential direction of the rotating matching surface of the core cylinder and the flange ring, and the core cylinder is provided with a ball groove for accommodating the balls;
or the flange ring is provided with a ball groove for accommodating the ball;
or a first ball half groove is formed in the core barrel, a second ball half groove is formed in the flange ring, and the ball groove formed by matching the first ball half groove and the second ball half groove is used for arranging the balls.
The first ball half groove and the second ball half groove form a complete ball groove, and the sizes of the first ball half groove and the second ball half groove can be set according to actual needs.
Further preferably, the ball is a steel ball.
Further preferably, the flange ring is provided with a ball mounting hole corresponding to the ball groove, a plug is arranged in the ball mounting hole, and the plug is used for positioning the ball.
The invention also provides a manifold system which comprises a plurality of connected pipelines, wherein some two adjacent pipelines are connected through the telescopic short section.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the telescopic short section, the merging cap is limited through the pair of bosses, the telescopic length of the core barrel relative to the shell is limited, the merging cap is connected with the thread pair of the shell, the position of the merging cap relative to the shell is adjusted, when a manifold system is installed at an improper distance, the device placement position and the manifold specification do not need to be adjusted repeatedly, the matching length of the shell and the core barrel is changed by rotating the merging cap, the length of the telescopic short section can be changed, the problem that the traditional manifold system is high in requirement on device position accuracy can be effectively solved, and the convenience of connection is guaranteed;
2. according to the telescopic short section, the fluid channel of the straight channel or the bent channel is arranged, so that the corresponding shell is a straight joint or a bent joint, and the telescopic short section can be matched with wider use requirements in a manifold system;
3. according to the telescopic short section, the flange ring is arranged, the flange plate is arranged at the end part of the shell, the existing union threaded connection is changed into flange connection, the size of the high-pressure manifold is increased, the efficiency of the high-pressure manifold in conveying fluid is effectively improved, and flexible telescopic and reliable connection can be realized at the same time;
4. according to the telescopic short section, when the length of the telescopic short section is adjusted to meet the requirement and the telescopic short section is connected with a manifold system, and a manifold vibrates, axial force generated by vibration acts on the damping element, so that the combined cap is driven to rotate relative to the shell, the length of the telescopic short section is finely adjusted, and the vibration of a high-pressure manifold is reduced or eliminated;
5. the telescopic short section is simple in structure, convenient to maintain, easy to operate and long in service life.
Drawings
FIG. 1 is a first schematic sectional view of a telescopic short section;
FIG. 2 is a schematic sectional structure diagram II of the telescopic short section;
FIG. 3 is a schematic view of the structure of part A in FIG. 1;
FIG. 4 is a schematic view of the housing;
FIG. 5 is a schematic structural view of a cartridge;
FIG. 6 is a schematic structural view of the press cap;
FIG. 7 is a schematic view of a flange ring;
FIG. 8 is a schematic structural view of a union cap;
FIG. 9 is a third schematic sectional view of the telescopic short section;
fig. 10 is a schematic cross-sectional structural diagram of a telescopic short section.
The labels in the figure are: 1-housing, 2-cartridge, 3-press cap, 4-supplement core, 5-damping element, 6-combination cap, 7-flange ring, 8-observation hole, 9-seal ring, 10-high pressure seal, 11-retainer ring, 12-plug, 13-ball, 14-first seal step, 15-second seal step, 16-seal groove, 17-supplement core groove, 18-first ball half groove, 19-groove, 20-protrusion, 21-ball mounting hole, 22-second ball half groove, 23-external thread, 24-fluid channel, 25-moving channel, 26-protrusion.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1
As shown in fig. 1 to 10, the telescopic short joint of the present invention includes a housing 1, a core barrel 2 and a flange ring 7.
A fluid channel 24 and a moving channel 25 are arranged in the shell 1, the fluid channel 24 is a straight channel or a bent channel, namely, the included angle between the inlet axis and the outlet axis of the fluid channel 24 ranges from 0 degree to 180 degrees; when the included angle is 0, the fluid channel 24 is a straight channel, when the included angle is 90 degrees, the fluid channel 24 is an L-shaped bent channel, and when the included angle is 180 degrees, the fluid channel 24 is a U-shaped bent channel (not shown); the fluid channel 24 shown in fig. 1, 2 and 4 is a straight channel, the corresponding housing 1 is a straight joint, the fluid channel 24 shown in fig. 9 is an L-shaped bent channel, the fluid channel 24 shown in fig. 10 is a zigzag-shaped bent channel, and the corresponding housing 1 is an elbow joint.
As shown in fig. 1, 2, 4, 9 and 10, the moving channel 25 is a straight channel and communicates with the fluid channel 24, a communicating end of the moving channel 25 with the fluid channel 24 and a communicating end of the fluid channel 24 with the moving channel 25 are coaxially arranged, and the diameter of the moving channel 25 is larger than that of the fluid channel 24.
As shown in fig. 1, 2, 4, 9 and 10, a flange is disposed at one end of the housing 1 where the fluid passage 24 is disposed, an internal thread is disposed at one end of the housing 1 where the moving passage 25 is disposed, a sealing step group is disposed on an inner wall of the moving passage 25, the sealing step group is located between the internal thread and the fluid passage 24, a diameter of the internal thread is greater than a maximum diameter of the sealing step group, the sealing step group includes a first sealing step 14 and a second sealing step 15, the first sealing step 14 is close to the fluid passage 24, the second sealing step 15 is close to the internal thread, the diameter of the second sealing step 15 is greater than the diameter of the first sealing step 14, the length of the internal thread is less than the length of the first sealing step 14, an observation hole 8 is disposed between the second sealing step 15 and the internal thread, the observation hole 8 communicates with inner and outer walls of the housing 1, and end faces of the flange ring 7 are both provided with a flange sealing groove body and a screw hole for flange connection.
As shown in fig. 1 to 5, 9 and 10, the cartridge 2 is a straight-through tube, that is, an inlet axis and an outlet axis of the cartridge 2 are arranged in a coincidence manner, the inner diameter of the cartridge 2 matches the diameter of the fluid channel 24, the outer wall of the cartridge 2 is provided with a plurality of steps, the steps are gradually increased from one end of the cartridge 2 to the other end, the seal surface, the first mounting surface and the second mounting surface are arranged in sequence, the seal surface and the seal step group are matched, a seal element is arranged between the seal step group and the seal surface, the length of the seal surface is greater than that of the seal step group, the seal element comprises a high-pressure seal 10 and at least one seal ring 9, the seal ring 9 is arranged between the first seal step 14 and the seal surface, and the high-pressure seal 10 is arranged between the second seal step 15 and the seal surface; the tip of sealed face is equipped with at least one seal groove 16, first installation face is close to the one end of seal groove 16 is equipped with mends core slot 17, the other end is the installation step, be equipped with first ball half-groove 18 and spacing step on the second installation face, first ball half-groove 18 includes a plurality of, and follows second installation face circumference equipartition, spacing step is round annular step, first ball half-groove 18 is located spacing step with between the installation step.
As shown in fig. 1, 2, 7, 9 and 10, a second ball half groove 22 and a limit groove are provided on an inner annular surface of the flange ring 7, the second ball half groove 22 corresponds to the first ball half groove 18 in a one-to-one manner and can be matched to form a ball groove, wherein the first ball half groove 18 and the second ball half groove 22 form a complete ball groove, the first ball half groove 18 and the second ball half groove 22 can be set according to actual requirements in size, can be distributed in half, can be distributed in 46, or can be distributed in 37, a ball mounting hole 21 corresponding to the second ball half groove 22 is provided on the flange ring 7, the ball mounting hole 21 is used for arranging a ball 13 in the ball groove, a plug 12 is provided in the ball mounting hole 21, and the plug 12 is used for positioning the ball 13 in the ball groove, and the limit groove is a ring-shaped groove.
During assembly, the flange ring 7 is sleeved on the second mounting surface from one side of the small end of the core barrel 2, the limiting step is matched in the limiting groove, the second ball half groove 22 is matched with the first ball half groove 18 to form the ball groove, the ball 13 is arranged in the ball groove through the ball mounting hole 21, the plug 12 is fixed in the ball mounting hole 21, the end part of the plug 12 is abutted against the ball 13, and the check ring 11 is arranged on the surface of the ball mounting hole 21 to fix the plug 12, so that the core barrel 2 can rotate relative to the flange ring 7; the second mounting surface is a rotary matching surface of the flange ring 7 and the core barrel 2, the flange ring 7 is positioned in one direction through the matching of the limiting step and the limiting groove, the flange ring 7 is positioned on the core barrel 2 through the balls 13, and partial rotary friction is converted into rolling friction, so that the friction resistance is reduced, the part loss is delayed, and the service life of the part is prolonged; in this embodiment, the balls 13 are steel balls.
As shown in fig. 1, 2, 9 and 10, the core supplementing groove 17 is provided with a core supplementing 4 in a matching manner, the core supplementing 4 and the mounting step form a pair of bosses arranged at intervals on the first mounting surface, a combining cap 6 is sleeved on the first mounting surface between the bosses, the combining cap 6 is fitted on the first mounting surface, two ends of the combining cap 6 can have gaps relative to the bosses, when two ends of the combining cap 6 have the gaps relative to the bosses, the core barrel 2 can stretch relative to the housing 1 in an initial state, the stretching length is determined by the gaps, and the core supplementing 4 and the mounting step limit the combining cap 6; as shown in fig. 8, the union cap 6 is provided with an external thread 23 and a protrusion 26, and the protrusion 26 is located between the end of the housing 1 and the mounting step.
During assembly, after the flange ring 7 is installed, the combining cap 6 is sleeved on the first installation surface from the small end side of the core barrel 2, and then the core supplement 4 is installed on the core supplement groove 17.
As shown in fig. 1 to 4, 9 and 10, the number of the sealing grooves 16 matches the number of the sealing rings 9, the sealing grooves 16 are used for arranging the sealing rings 9, a pressing cap 3 is arranged in the housing 1, the pressing cap 3 is connected to the inner wall of the moving channel 25 through a thread pair, the pressing cap 3 is used for extruding the high-pressure sealing member 10, as shown in fig. 6, one end surface of the pressing cap 3 is provided with a protrusion 20, the protrusion 20 is matched with the second sealing step 15, the pressing cap 3 extrudes the high-pressure sealing member 10 through the protrusion 20, the other end surface of the pressing cap 3 opposite to the protrusion 20 is provided with a plurality of grooves 19, the pressing cap 3 is unscrewed in the housing 1 through tool matching, and the pressing cap 3 is unscrewed to extrude the high-pressure sealing member 10 to seal the housing 1 and the cartridge 2; with the structure, a mounting groove is formed between the second sealing step 15 and the protrusion 20, the high-pressure sealing element 10 is placed in the mounting groove, the size of the mounting groove is adjusted by adjusting the tightness degree of the pressing cap 3, so that the high-pressure sealing element 10 deforms in the mounting groove and can well abut against the sealing surface and the second sealing step 15, static sealing in a static state and dynamic sealing in a rotating state are met, leakage of high-pressure fluid in an inner cavity is prevented, and the observation hole 8 is used for judging whether the sealing element fails in sealing through leakage.
During assembly, the sealing ring 9 is mounted on the sealing groove 16, the high-pressure sealing element 10 is mounted on the second sealing step 15, the pressing cap 3 is screwed, after the combining cap 6 and the complementary core 4 are mounted, the small end of the core barrel 2 is inserted into the moving channel 25, the sealing surface is in sealing sliding fit with the sealing step group, the external thread 23 is matched with the internal thread to form thread pair connection, the core barrel 2 is connected with the shell 1, at the moment, the core barrel 2 can rotate and axially move relative to the shell 1, the core barrel 2 is in sealing fit with the shell 1 through the sealing element, the protruding part 26 is matched with the end part of the shell 1, and the protruding part 26 is used for controlling the length of the combining cap 6 extending into the moving channel 25, so that the external thread 23 and the internal thread are protected from being damaged, the core barrel 2 can rotate and axially move stably relative to the shell 1, and meanwhile, the protruding part 26 is also convenient for screwing the combining cap 6, and is convenient for adjusting the length of the telescopic short section.
According to the telescopic short section, the merging cap 6 is limited through the pair of bosses, the telescopic length of the core barrel 2 relative to the shell 1 is limited, the merging cap 6 is connected with the thread pair of the shell 1, the position of the merging cap 6 relative to the shell 1 is adjusted, when the distance is inappropriate in the process of installing a manifold system, the device placing position and the manifold specification do not need to be repeatedly adjusted, the matching length of the shell 1 and the core barrel 2 is changed through rotating the merging cap 6, the length of the telescopic short section can be changed, the problem that the traditional manifold system is high in requirement on the device position accuracy can be effectively solved, and the connection convenience is ensured; through the arrangement of the fluid channel 24 with a straight channel or an elbow channel, the corresponding housing 1 is a direct joint or an elbow joint, so that the housing can be matched with wider use requirements in a manifold system; by arranging the flange ring 7 and arranging the flange plate at the end part of the shell 1, the existing union threaded connection is changed into flange connection, the size of the high-pressure manifold is increased, the efficiency of the high-pressure manifold for conveying fluid is effectively improved, and flexible expansion and reliable connection can be realized at the same time; the telescopic short section has the advantages of simple structure, convenience in maintenance, easiness in operation and long service life.
Example 2
The telescopic short section of the present invention is different from that of embodiment 1 in that, in this embodiment, a ball groove for accommodating the ball 13 is provided on the core barrel 2, or a ball groove for accommodating the ball 13 is provided on the flange ring 7.
Example 3
On the basis of embodiment 1 or embodiment 2, in this embodiment, at least one end of the combining cap 6 is matched with a damping element 5, and the damping element 5 is a spring, an elastic cushion block or a damping block.
The damping element 5 is sleeved on the first mounting surface, one end of the damping element 5 abuts against one end of the combining cap 6, and the other end of the damping element 5 abuts against the mounting step and/or the complementary core 4.
In a specific embodiment, as shown in fig. 1, 2, 9 and 10, the damper elements 5 are respectively fitted to both ends of the combining cap 6, a first one of the damper elements 5 abuts against the mounting step, both ends of the combining cap 6 abut against the two damper elements 5, the complementary core 4 abuts against the second one of the damper elements 5, and the protruding portion 26 is located near an end of the first one of the damper elements 5.
During assembly, after the flange ring 7 is installed, the first damping element 5, the combining cap 6 and the second damping element 5 are sequentially sleeved on the first installation surface from the small end side of the core barrel 2, the first damping element 5 abuts against the installation step, then the complementary core 4 is installed on the complementary core groove 17, and the complementary core 4 abuts against the second damping element 5.
This embodiment a flexible nipple joint, through at least one the abrupt platform with it sets up between cap 6 damping element 5, after the length that adjusts flexible nipple joint satisfies the demands and is connected with manifold system, when the manifold takes place the vibration, the axial force that the vibration produced acts on damping element 5, thereby the drive it is relative to connect cap 6 the shell 1 is rotatory, finely tunes the length of flexible nipple joint, alleviates or eliminates the vibration of high-pressure manifold.
Example 4
As shown in fig. 1 to 10, a manifold system according to the present invention includes a plurality of connected pipes, wherein some two adjacent pipes are connected by a telescopic short joint according to any one of embodiments 1 to 3.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (12)
1. The utility model provides a telescopic short section, includes shell (1) and core section of thick bamboo (2), its characterized in that, be equipped with fluid passage (24) and removal passageway (25) in shell (1), fluid passage (24) are straight passageway or curved passageway, removal passageway (25) for straight passageway and with fluid passage (24) intercommunication, shell (1) sets up the one end of removal passageway (25) is equipped with the internal thread, the interval is equipped with a pair of lug on core section of thick bamboo (2) outer wall, between the lug core section of thick bamboo (2) overcoat is equipped with and cap (6), and be equipped with external screw thread (23) on cap (6), the one end of core section of thick bamboo (2) is inserted removal passageway (25), external screw thread (23) with interior screw-thread fit, core section of thick bamboo (2) can be relative shell (1) rotation and axial displacement, core section of thick bamboo (2) with shell (1) are through sealing element sealing fit.
2. The telescopic sub according to claim 1, characterized in that the inner wall of the displacement channel (25) is provided with a sealing step group, the sealing step group is positioned between the internal thread and the fluid channel (24), the outer wall of the cartridge (2) is provided with a sealing surface matched with the sealing step group, the sealing element is arranged between the sealing step group and the sealing surface, and the length of the sealing surface is greater than that of the sealing step group.
3. The telescopic sub according to claim 2, characterized in that the sealing step set comprises a first sealing step (14) and a second sealing step (15), the first sealing step (14) being adjacent to the fluid passage (24), the second sealing step (15) being adjacent to the internal thread, the length of the internal thread being smaller than the length of the first sealing step (14).
4. The telescopic sub according to claim 3, characterized in that the sealing elements comprise a high-pressure seal (10) and at least one seal ring (9), the seal ring (9) being provided between the first sealing step (14) and the sealing surface, the high-pressure seal (10) being provided between the second sealing step (15) and the sealing surface.
5. The telescopic sub according to claim 4, further comprising a pressure cap (3), said pressure cap (3) being connected to the inner wall of said displacement channel (25) by a thread pair, said pressure cap (3) being adapted to compress said high pressure seal (10).
6. A telescopic short section according to claim 1, characterized in that at least one end of the combining cap (6) is fitted with a damping element (5), the damping element (5) being arranged in abutment on the boss.
7. Telescopic sub according to claim 6, characterized in that the damping element (5) is a spring, a resilient pad or a damping block.
8. The telescopic short section according to claim 6, wherein the outer walls of the core barrel (2) at the two ends of the combining cap (6) are respectively provided with a core supplementing groove (17) and a mounting step, the core supplementing groove (17) is provided with a core supplementing (4) in a matching manner, the damping element (5) is arranged on the core barrel (2) between the core supplementing (4) and the mounting step, one end of the damping element (5) abuts against one end of the combining cap (6), and the other end of the damping element (5) abuts against the mounting step and/or the core supplementing (4).
9. The telescopic short section according to any one of claims 1-8, further comprising a flange ring (7), wherein the other end of the cartridge (2) is inserted into an inner annular surface of the flange ring (7), the cartridge (2) can rotate relative to the flange ring (7), and a flange is arranged at one end of the housing (1) where the fluid channel (24) is arranged.
10. The telescopic short piece according to claim 9, characterized in that a plurality of balls (13) are uniformly distributed along the circumferential direction of the rotating matching surface of the core cylinder (2) and the flange ring (7), and the core cylinder (2) is provided with a ball groove for accommodating the balls (13);
or the flange ring (7) is provided with a ball groove for accommodating the ball (13);
or a first ball half groove (18) is formed in the core barrel (2), a second ball half groove (22) is formed in the flange ring (7), and a ball groove formed by matching the first ball half groove (18) with the second ball half groove (22) is used for arranging the ball (13).
11. The telescopic short piece according to claim 10, characterized in that the flange ring (7) is provided with ball mounting holes (21) corresponding to the ball grooves, and plugs (12) are provided in the ball mounting holes (21), wherein the plugs (12) are used for positioning the balls (13).
12. A manifold system comprising a plurality of connected pipes, wherein some adjacent two of said pipes are connected by a telescoping sub as claimed in any of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211192557.0A CN115507235A (en) | 2022-09-28 | 2022-09-28 | Telescopic short section and manifold system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211192557.0A CN115507235A (en) | 2022-09-28 | 2022-09-28 | Telescopic short section and manifold system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115507235A true CN115507235A (en) | 2022-12-23 |
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ID=84505871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211192557.0A Pending CN115507235A (en) | 2022-09-28 | 2022-09-28 | Telescopic short section and manifold system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115507235A (en) |
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