CN112412348A - High-pressure manifold telescopic rotary nipple - Google Patents
High-pressure manifold telescopic rotary nipple Download PDFInfo
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- CN112412348A CN112412348A CN202011181669.7A CN202011181669A CN112412348A CN 112412348 A CN112412348 A CN 112412348A CN 202011181669 A CN202011181669 A CN 202011181669A CN 112412348 A CN112412348 A CN 112412348A
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- 210000002445 nipple Anatomy 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 128
- 238000005192 partition Methods 0.000 claims abstract description 3
- 239000004519 grease Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 35
- 239000012530 fluid Substances 0.000 description 15
- 239000010720 hydraulic oil Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000005457 optimization Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a high-pressure manifold telescopic rotary short section which comprises a shell, a mandrel and an end cover, wherein the mandrel is arranged on the shell; the mandrel is inserted into the shell and can rotate mutually; a sealing area, a telescopic area and a supporting area are sequentially arranged between the shell and the mandrel, the sealing area is provided with a sealing element, the supporting area is provided with a bearing, the telescopic area is a sealing space, the telescopic area is divided into a first telescopic space and a second telescopic space which are mutually independent by a partition ring which protrudes from the mandrel, the shell is provided with a first oil hole and a second oil hole which are respectively communicated with the first telescopic space and the second telescopic space, and the first oil hole and the second oil hole are communicated through a control switch; the end cover is arranged at the end part of the mandrel inserted into the shell. The high-pressure manifold telescopic rotary nipple can be stretched in length, flexibly rotated, convenient to install and capable of effectively reducing vibration.
Description
Technical Field
The invention relates to a high-pressure manifold telescopic rotating nipple, and belongs to the technical field of high-pressure manifolds.
Background
The high-pressure manifold 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 manifold such as a high-pressure movable elbow and a high-pressure pipeline. Because the length of the high-pressure manifold is fixed when leaving the factory, the condition that the length of the pipeline of the middle connecting section is not proper often appears in the connection process of the high-pressure manifold, the adjustment range of the high-pressure manifold is limited, the device placing position and the manifold specification can be adjusted repeatedly due to improper distance, the use is very inconvenient, and the installation efficiency of the high-pressure manifold is reduced.
In the existing connection mode, because the high-pressure fluid has pressure fluctuation and repeatedly turns in the pipeline, the vibration is increased, the high-pressure manifold is damaged, and the service life of the high-pressure manifold is shortened.
Meanwhile, the existing mode adopts union threaded connection, so that the fracture is easily caused from threads, the size of the threads is limited, the size of the drift diameter of a high-pressure manifold is designed to be small, and the capacity of conveying fluid by a pipeline is too low.
Disclosure of Invention
The invention aims to: aiming at the problems, the invention provides the high-pressure manifold telescopic rotary short section which can be flexibly rotated and has the advantages of telescopic length, convenience in installation and capability of effectively reducing vibration.
The technical scheme adopted by the invention is as follows:
a high-pressure manifold telescopic rotary short section comprises a shell, a mandrel and an end cover;
the mandrel is inserted into the shell and can rotate mutually; a sealing area, a telescopic area and a supporting area are sequentially arranged between the shell and the mandrel, the sealing area is provided with a sealing element, the supporting area is provided with a bearing, the telescopic area is a sealing space, the telescopic area is divided into a first telescopic space and a second telescopic space which are mutually independent by a partition ring which protrudes from the mandrel, the shell is provided with a first oil hole and a second oil hole which are respectively communicated with the first telescopic space and the second telescopic space, and the first oil hole and the second oil hole are communicated through a control switch;
the end cover is arranged at the end part of the mandrel inserted into the shell.
In the invention, the first telescopic space and the second telescopic space are filled with oil liquid such as hydraulic oil and lubricating oil, and are communicated with the first oil hole and the second oil hole through the control switch to form an oil path; when the control switch is communicated with the oil way, hydraulic oil and the like can flow through the oil way, and the mandrel can move left and right in the shell at the moment, so that the length of the short section is adjusted, when the distance for installing the high-pressure manifold is improper, the equipment placing position and the manifold specification do not need to be adjusted repeatedly, and under the condition of not changing the original high-pressure manifold equipment, only one short section of the telescopic short section needs to be added for supplement, the telescopic short section is adjusted to the proper length for connection, so that the problem that the traditional high-pressure manifold connection has high requirements on the equipment position accuracy is effectively solved, manpower and material resources are saved, and the connection convenience.
The high-pressure manifold telescopic rotary short section can flexibly rotate during installation and is conveniently connected with other pipelines; the sealing element is arranged, so that static sealing in a static state and dynamic sealing in a rotary state can be met; the bearing can play the effect of supporting the dabber, frictional force when simultaneously can reducing rotation each other. When the fluid thrust bearing device is used, the fluid thrust borne by the mandrel is transmitted to hydraulic oil in the second telescopic space through the separating ring and is transmitted to the end cover through the bearing, and the end cover can help bear part of the thrust, so that the pressure of the mandrel is reduced; there is pressure fluctuation in the high-pressure fluid in the nipple joint to inside repeated diversion leads to the fact vibrations to increase the messenger, and partial vibrations power is transformed into the revolving force and makes shell and dabber take place mutual rotation, thereby can reduce vibrations, improves life.
Preferably, the seal is a high pressure seal.
In the scheme, the sealing effect of the high-pressure sealing element under the high-pressure environment is better.
Preferably, the end of the seal is provided with a projecting stop collar.
In the above scheme, the limiting ring is arranged, so that the sliding phenomenon possibly occurring in the sealing element is avoided in the process of extension and retraction of the short section.
Preferably, a first sealing step, a second sealing step and a third sealing step which are in a stepped shape are arranged in the shell, and a first sealing surface and a second sealing surface are arranged on the mandrel; the first sealing step is in surface sealing with the first sealing surface, and the second sealing step and the second sealing surface are provided with contact surfaces; the axial length of the first sealing surface is greater than that of the first sealing step, the sealing area is formed between the first sealing surface and the second sealing step, and the telescopic area and the supporting area are formed between the second sealing surface and the third sealing step.
Preferably, a seal ring is provided on a contact surface of the second seal step and the second seal surface.
Preferably, a sealing ring is arranged on the contact surface of the separating ring and the third sealing step.
In the above-described aspect, the sealing performance between the two contact members is ensured.
Preferably, the length of the second sealing surface at the front part of the spacer ring is greater than the sum of the lengths of the first telescopic space and the second telescopic space.
Preferably, the length from the end of the sealing member to the first telescopic space is greater than the sum of the lengths of the first telescopic space and the second telescopic space.
Preferably, the length of the first sealing step is greater than the sum of the lengths of the first telescopic space and the second telescopic space.
Through above-mentioned technical scheme, guarantee flexible in-process, the sealed of first sealed step and first sealed face, the sealed of second sealed step and second sealed face.
Preferably, a sliding block and an adjusting sleeve which are matched in the radial direction are arranged between the bearing and the second telescopic space, the sliding block is in contact with an inner ring of the bearing, and the adjusting sleeve comprises a stress ring which is in contact with the sliding block and a force transmission ring which is in contact with the end cover; the bearing is arranged between the mandrel and the force transmission ring, and a gap is formed between the adjusting sleeve and the bearing in the axial direction.
In the scheme, the sliding block and the adjusting sleeve respectively bear the fluid thrust from the mandrel, the thrust borne by the sliding block is transmitted to the bearing and then transmitted to the end cover, and the thrust borne by the adjusting sleeve is directly transmitted to the end cover due to the fact that the adjusting sleeve and the bearing have a gap in the axial direction. Through the arrangement, the thrust borne by the bearing can be effectively reduced, the size of the bearing is reduced, and the service life of the bearing can be prolonged.
Preferably, a seal ring is arranged between the slide block and the adjusting sleeve.
Preferably, the contact area between the slider and the second telescopic space is less than 50% of the contact area between the adjusting sleeve and the second telescopic space.
Preferably, the contact area of the sliding block and the second telescopic space is 20-30% of the contact area of the adjusting sleeve and the second telescopic space.
In the above scheme, the thrust borne by the sliding block and the adjusting sleeve is in direct proportion to the contact surface between the sliding block and the second telescopic space, and the smaller the contact area of the sliding block is, the smaller the thrust transmitted to the bearing is.
Preferably, the end part of the sliding block close to the bearing is provided with a convex positioning part, and the adjusting sleeve is provided with a positioning groove matched with the positioning part.
In the above scheme, the slider can be prevented from falling into the second telescopic space through the matching limit of the positioning part and the positioning groove.
Preferably, the first oil hole and the second oil hole are located at opposite ends of the first telescopic space and the second telescopic space, respectively.
Preferably, the first oil hole is disposed between the second seal step and the third seal step, and a depth of the first oil hole in the second seal step is greater than a depth of the first oil hole in the third seal step.
In above-mentioned scheme, contract to the shortest at the nipple joint, first flexible space is close to for zero, sets up through above-mentioned scheme, and when the nipple joint needs the extension, hydraulic oil can pass through the oil circuit from first oilhole entering first flexible space from the flexible space of second more easily.
Preferably, the second oil hole is provided between the adjusting sleeve and the second telescopic space, and a chamfer is provided at a position of the adjusting sleeve opposite to the second oil hole.
In above-mentioned scheme, extend to the longest at the nipple joint, the flexible space of second is close to for zero, sets up through above-mentioned scheme, and when the nipple joint needs to shrink, hydraulic oil can get into the flexible space of second from the second oilhole more easily through the chamfer.
Preferably, the housing is provided with a grease injection hole communicated with the sealing area.
In above-mentioned scheme, set up and annotate the grease hole and aim at and annotate lubricating grease through annotating the grease hole and lubricate to sealing area, lubricated district, guarantee that the part is smooth in the use, unimpeded.
Preferably, the bearing is a tapered roller bearing, or a radial sliding bearing, or a combination of a radial rolling bearing and a thrust bearing.
Preferably, the bearing is a tapered roller bearing.
In the scheme, the axial thrust transmitted by the large force transmission ring can be borne.
Preferably, one end of the mandrel is connected with a 90-degree flange joint, and one end of the shell is provided with a flange.
Preferably, the mandrel and the 90-degree flange joint are fixedly connected through a clamp and a bolt.
Preferably, the mandrel is inserted into the 90-degree flange joint, the mandrel is provided with a protruding positioning step, the split type hoop is arranged at the positioning step, and the end part of the 90-degree flange joint, which is opposite to the mandrel, is provided with a bolt to be connected with the hoop.
In the scheme, the corresponding pipelines can be connected by connecting 90-degree flange joints; through setting up the flange and connecting, for ordinary union threaded connection, the cracked condition of screw thread can not appear, the cooperation uses the high-pressure manifold of flange formula, can improve 50% -100% with the size of pipeline latus rectum to effectively increase fluidic transport capacity.
Preferably, the end cap is provided with a projecting ring interposed between the housing and the mandrel.
In the scheme, the end cover is larger than the sealing surface of the shell and the mandrel by arranging the convex ring, the sealing effect is better, and the mandrel can be supported to increase the structural stability.
Preferably, sealing rings are arranged on the contact surfaces of the end cover, the shell and the mandrel.
In the above scheme, the contact surfaces of the end cover, the shell and the mandrel are provided with the sealing grooves, and the sealing rings are arranged in the sealing grooves, so that the loss of lubricating oil or lubricating grease of the inner bearing can be prevented to prevent the corrosion of inner devices from causing unsmooth movement.
Preferably, the end cap is bolted to the housing.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the structure is simple, the sealing performance is good, the operation torque is small, the abrasion is not easy to generate, the maintenance is convenient, the service life is long, and the adaptability is good;
2. the problem that the position accuracy of the traditional high-pressure manifold connection is high can be effectively solved without changing the original high-pressure manifold equipment, and the convenience of connection is ensured;
3. the efficiency of conveying fluid by the high-pressure manifold can be effectively improved, and flexible rotation and reliable connection can be realized at the same time;
4. the vibration of the high-pressure manifold can be reduced.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a first schematic view of a telescoping rotary sub;
FIG. 2 is a schematic diagram of the telescopic rotary short joint after contraction;
FIG. 3 is a schematic diagram of the telescopic rotary short joint after being stretched;
FIG. 4 is a schematic view of a housing;
FIG. 5 is a schematic view of a mandrel;
FIG. 6 is a second schematic view of the telescoping rotary sub;
FIG. 7 is a third schematic view of a telescoping rotary sub;
FIG. 8 is a fourth schematic view of the telescoping rotary sub;
FIG. 9 is an enlarged view of A in FIG. 8;
FIG. 10 is an enlarged view of B in FIG. 8;
FIG. 11 is a schematic view of a slide, adjustment sleeve and bearing;
fig. 12 is a fifth schematic view of the telescopic rotary nipple.
The labels in the figure are: 1-shell, 11-first sealing step, 12-second sealing step, 13-third sealing step, 14-first telescopic space, 15-second telescopic space, 16-first oil hole, 17-second oil hole, 2-mandrel, 21-first sealing surface, 22-second sealing surface, 23-separating ring, 24-positioning step, 3-end cover, 31-projecting ring, 4-sealing element, 41-limiting ring, 5-bearing, 61-adjusting sleeve, 62-sliding block, 63-stress ring, 64-force transfer ring, 65-chamfer, 66-positioning part, 7-90-degree flange joint, 8-flange and 9-clamp.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
As shown in fig. 1-3, a high-pressure manifold telescopic rotary short section comprises a housing, a mandrel and an end cover;
the core shaft is inserted into the shell and can rotate mutually; a sealing area, a telescopic area and a supporting area are sequentially arranged between the shell and the mandrel, the sealing area is provided with a high-pressure sealing element, the supporting area is provided with a tapered roller bearing, the telescopic area is a sealing space, the telescopic area is divided into a first telescopic space and a second telescopic space which are mutually independent by a separating ring which is protruded on the mandrel, the shell is provided with a first oil hole and a second oil hole which are respectively communicated with the first telescopic space and the second telescopic space, and the first oil hole and the second oil hole are communicated through a control switch;
the end cover is arranged at the end part of the mandrel inserted into the shell and is connected with the shell through a bolt;
the length of the second sealing surface at the front part of the separating ring is greater than the sum of the lengths of the first telescopic space and the second telescopic space; the length from the tail end of the sealing element to the first telescopic space is greater than the sum of the lengths of the first telescopic space and the second telescopic space; the length of the first sealing step is greater than the sum of the lengths of the first telescopic space and the second telescopic space;
a sliding block and an adjusting sleeve which are matched in the radial direction are arranged between the bearing and the second telescopic space, the sliding block is contacted with the inner ring of the bearing, and the adjusting sleeve comprises a stress ring contacted with the sliding block and a force transmission ring contacted with the end cover; the bearing is arranged between the mandrel and the force transmission ring, and a gap is formed between the adjusting sleeve and the bearing in the axial direction.
In the embodiment, the first telescopic space and the second telescopic space are filled with hydraulic oil, the first oil hole and the second oil hole are communicated through the control switch to form an oil path, and when the control switch cuts off the oil path, the mandrel is fixed in the shell at the moment because the hydraulic oil and the like are incompressible; when control switch intercommunication oil circuit, hydraulic oil can flow through the oil circuit, the dabber can remove about in the shell this moment, thereby adjust the length of nipple joint, appear the distance improper in installation high-pressure manifold, need not adjust equipment locating place and manifold specification repeatedly, under the circumstances that does not change original high-pressure manifold equipment, the nipple joint that only needs to add one embodiment is as supplementing, adjust the nipple joint to suitable length connect can, thereby effectively solve traditional high-pressure manifold and connect the problem that requires high to equipment location accuracy, manpower and materials are saved, guarantee the convenience of connecting.
The high-pressure manifold telescopic rotary short section can flexibly rotate during installation, and is conveniently connected with other pipelines; the sealing element is arranged, so that static sealing in a static state and dynamic sealing in a rotary state can be met; the bearing can play the effect of supporting the dabber, frictional force when simultaneously can reducing rotation each other. When the fluid thrust bearing device is used, the fluid thrust borne by the mandrel is transmitted to hydraulic oil in the second telescopic space through the separating ring, the fluid thrust is borne by the sliding block and the adjusting sleeve respectively, the thrust borne by the sliding block is transmitted to the bearing and then transmitted to the end cover, and the thrust borne by the adjusting sleeve is directly transmitted to the end cover through the force transmitting ring because a gap is formed between the adjusting sleeve and the bearing in the axial direction; there is pressure fluctuation in the high-pressure fluid in the nipple joint to inside repeated diversion leads to the fact vibrations to increase the messenger, and partial vibrations power is transformed into the revolving force and makes shell and dabber take place mutual rotation, thereby can reduce vibrations, improves life.
Example 2
As shown in fig. 4-5, this embodiment is a further optimization of embodiment 1, in this embodiment, a first sealing step, a second sealing step and a third sealing step which are stepped down are arranged in the housing, and a first sealing surface and a second sealing surface are arranged on the mandrel; the first sealing step and the first sealing surface are in surface sealing, and the second sealing step and the second sealing surface are provided with contact surfaces; the axial length of the first sealing surface is greater than that of the first sealing step, a sealing area is formed between the first sealing surface and the second sealing step, and a telescopic area and a supporting area are formed between the second sealing surface and the third sealing step; a sealing ring is arranged on the contact surface of the second sealing step and the second sealing surface; and a sealing ring is arranged on the contact surface of the separating ring and the third sealing step.
Example 3
As shown in fig. 6, in this embodiment, as a further optimization of the above embodiment, in this embodiment, the housing is provided with a grease injection hole communicated with the sealing area, and grease is injected into the sealing area and the lubrication area through the grease injection hole for lubrication, so as to ensure that the components are smooth and unimpeded in the use process.
Example 4
As shown in fig. 7, as a further optimization of the above embodiment, in this embodiment, a protruding limit ring is disposed at an end of the sealing element close to the second sealing surface, so that a sliding phenomenon that may occur to the sealing element is avoided in the process of extending and retracting the nipple.
Example 5
As shown in fig. 8-10, in this embodiment, as a further optimization of the above embodiment, in this embodiment, a grease injection hole communicated with the sealing area is provided on the housing, and grease is injected into the sealing area and the lubricating area through the grease injection hole for lubrication, so as to ensure that the components are smooth and unimpeded in the use process;
the end part of the sealing element close to the second sealing surface is provided with a convex limiting ring, so that the possible sliding phenomenon of the sealing element is avoided in the process of telescoping the short section;
the end cover is provided with the projecting ring inserted between the shell and the mandrel, the sealing surface of the end cover, the shell and the mandrel is larger by the arrangement of the projecting ring, the sealing effect is better, and the mandrel can be supported to increase the structural stability;
sealing grooves are formed in contact surfaces of the end cover, the shell and the mandrel, and sealing rings are arranged in the sealing grooves, so that lubricating oil or lubricating grease of an internal bearing can be prevented from being lost, and unsmooth action caused by corrosion of internal devices can be prevented;
the first oil hole is arranged between the second sealing step and the third sealing step, the depth of the first oil hole on the second sealing step is larger than that of the first oil hole on the third sealing step, so that the short section is contracted to the shortest length, and when the short section needs to be expanded, hydraulic oil can more easily push the separation ring from the second expansion space to the first expansion space through the oil path from the first oil hole in the axial direction;
the second oilhole sets up between the flexible space of adjusting sleeve and second, and adjusting sleeve sets up the chamfer with second oilhole relative position department to extend to the longest at the nipple joint, when the nipple joint needs to shrink, hydraulic oil can more easily pass through the chamfer and promote the spacer ring from the second oilhole axial and get into the flexible space of second.
Example 6
As shown in fig. 11, in this embodiment, as a further optimization of the above embodiment, in this embodiment, a sealing ring is disposed between the sliding block and the adjusting sleeve; the contact area of the sliding block and the second telescopic space is 30% of the contact area of the adjusting sleeve and the second telescopic space, the thrust borne by the sliding block and the adjusting sleeve is in direct proportion to the contact surface of the sliding block and the second telescopic space, and the smaller the contact area of the sliding block is, the smaller the thrust transmitted to the bearing is;
the tip that the slider is close to the bearing sets up convex location portion, and the adjustment sleeve sets up the constant head tank that matches with location portion, and is spacing through the cooperation of location portion and constant head tank, can avoid the slider to fall in the flexible space of second.
Example 7
In this embodiment, as a further optimization of the above embodiment, in this embodiment, a seal ring is disposed between the slider and the adjusting sleeve; the contact area of the sliding block and the second telescopic space is 20% of the contact area of the adjusting sleeve and the second telescopic space, the thrust borne by the sliding block and the adjusting sleeve is in direct proportion to the contact surface of the sliding block and the second telescopic space, and the smaller the contact area of the sliding block is, the smaller the thrust transmitted to the bearing is;
the tip that the slider is close to the bearing sets up convex location portion, and the adjustment sleeve sets up the constant head tank that matches with location portion, and is spacing through the cooperation of location portion and constant head tank, can avoid the slider to fall in the flexible space of second.
Example 8
In this embodiment, as a further optimization of the above embodiment, in this embodiment, a seal ring is disposed between the slider and the adjusting sleeve; the contact area of the sliding block and the second telescopic space is 25% of the contact area of the adjusting sleeve and the second telescopic space, the thrust borne by the sliding block and the adjusting sleeve is in direct proportion to the contact surface of the sliding block and the second telescopic space, and the smaller the contact area of the sliding block is, the smaller the thrust transmitted to the bearing is;
the tip that the slider is close to the bearing sets up convex location portion, and the adjustment sleeve sets up the constant head tank that matches with location portion, and is spacing through the cooperation of location portion and constant head tank, can avoid the slider to fall in the flexible space of second.
In this embodiment, the contact area between the slider and the second telescopic space may be any value less than 50% of the contact area between the adjustment sleeve and the second telescopic space. The best choice is that the contact area of the sliding block and the second telescopic space is 20-30% of the contact area of the adjusting sleeve and the second telescopic space, so that a better effect is achieved.
Example 9
As shown in fig. 12, this embodiment is a further optimization of the above embodiment, in this embodiment, a flange is disposed at one end of the housing, one end of the mandrel is connected to the 90 ° flange joint, the mandrel is inserted into the 90 ° flange joint, a protruding positioning step is disposed on the mandrel, the split-type clamp is disposed at the positioning step, and a bolt is disposed at an end portion of the 90 ° flange joint opposite to the mandrel and connected to the clamp; corresponding pipelines can be connected by connecting 90-degree flange joints; through setting up the flange and connecting, for ordinary union threaded connection, the cracked condition of screw thread can not appear, the cooperation uses the high-pressure manifold of flange formula, can improve 50% -100% with the size of pipeline latus rectum to effectively increase fluidic transport capacity.
In conclusion, the high-pressure manifold telescopic rotary short section has the advantages of simple structure, good sealing performance, small operation torque, difficulty in abrasion, convenience in maintenance, long service life and good adaptability; the problem that the position accuracy of the traditional high-pressure manifold connection is high can be effectively solved without changing the original high-pressure manifold equipment, and the convenience of connection is ensured; the efficiency of conveying fluid by the high-pressure manifold can be effectively improved, and flexible rotation and reliable connection can be realized at the same time; the vibration of the high-pressure manifold can be reduced.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. The utility model provides a flexible rotatory nipple joint of high-pressure manifold which characterized in that: comprises a shell, a mandrel and an end cover;
the mandrel is inserted into the shell and can rotate mutually; a sealing area, a telescopic area and a supporting area are sequentially arranged between the shell and the mandrel, the sealing area is provided with a sealing element, the supporting area is provided with a bearing, the telescopic area is a sealing space, the telescopic area is divided into a first telescopic space and a second telescopic space which are mutually independent by a partition ring which protrudes from the mandrel, the shell is provided with a first oil hole and a second oil hole which are respectively communicated with the first telescopic space and the second telescopic space, and the first oil hole and the second oil hole are communicated through a control switch;
the end cover is arranged at the end part of the mandrel inserted into the shell.
2. The high pressure manifold telescoping swivel sub of claim 1, wherein: a first sealing step, a second sealing step and a third sealing step which are in a step shape are arranged in the shell, and a first sealing surface and a second sealing surface are arranged on the mandrel; the first sealing step is in surface sealing with the first sealing surface, and the second sealing step and the second sealing surface are provided with contact surfaces; the axial length of the first sealing surface is greater than that of the first sealing step, the sealing area is formed between the first sealing surface and the second sealing step, and the telescopic area and the supporting area are formed between the second sealing surface and the third sealing step.
3. The high pressure manifold telescoping swivel sub of claim 1, wherein: a sliding block and an adjusting sleeve which are matched in the radial direction are arranged between the bearing and the second telescopic space, the sliding block is in contact with an inner ring of the bearing, and the adjusting sleeve comprises a stress ring which is in contact with the sliding block and a force transmission ring which is in contact with the end cover; the bearing is arranged between the mandrel and the force transmission ring, and a gap is formed between the adjusting sleeve and the bearing in the axial direction.
4. The high pressure manifold telescoping swivel sub of claim 3, wherein: the contact area of the sliding block and the second telescopic space is less than 50% of the contact area of the adjusting sleeve and the second telescopic space; preferably, the contact area of the sliding block and the second telescopic space is 20-30% of the contact area of the adjusting sleeve and the second telescopic space.
5. The high pressure manifold telescoping swivel sub of claim 3, wherein: the end part of the sliding block close to the bearing is provided with a convex positioning part, and the adjusting sleeve is provided with a positioning groove matched with the positioning part.
6. The high pressure manifold telescoping swivel sub of claim 1, wherein: the first oil hole and the second oil hole are respectively positioned at two opposite ends of the first telescopic space and the second telescopic space.
7. The high pressure manifold telescoping swivel sub of claim 1, wherein: and the shell is provided with a grease injection hole communicated with the sealing area.
8. The high pressure manifold telescoping swivel sub of claim 1, wherein: the bearing is a tapered roller bearing, or a radial sliding bearing, or a combination of a radial rolling bearing and a thrust bearing.
9. The high pressure manifold telescoping swivel sub of claim 1, wherein: one end of the mandrel is connected with a 90-degree flange joint, and one end of the shell is provided with a flange.
10. The high pressure manifold telescoping swivel sub of claim 1, wherein: and sealing rings are arranged on the contact surfaces of the end cover, the shell and the mandrel.
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| CN202011181669.7A CN112412348B (en) | 2020-10-29 | 2020-10-29 | High-pressure manifold telescopic rotary nipple |
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| CN202011181669.7A CN112412348B (en) | 2020-10-29 | 2020-10-29 | High-pressure manifold telescopic rotary nipple |
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| CN112412348B CN112412348B (en) | 2022-07-05 |
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| CN113756727A (en) * | 2021-09-10 | 2021-12-07 | 四川宏华石油设备有限公司 | Self-balancing telescopic rotary hard pipe connecting device and manifold system thereof |
| CN113756726A (en) * | 2021-09-10 | 2021-12-07 | 四川宏华石油设备有限公司 | Adjustable high-pressure manifold and system |
| CN113914842A (en) * | 2021-11-01 | 2022-01-11 | 泰伦机械(苏州)有限公司 | Combined fracturing manifold device |
| CN114198577A (en) * | 2021-11-01 | 2022-03-18 | 中石化四机石油机械有限公司 | Flange pipeline telescoping device |
| CN115681644A (en) * | 2022-09-28 | 2023-02-03 | 四川宏华石油设备有限公司 | Telescopic short section and manifold system |
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