CN115681644A - Telescopic short section and manifold system - Google Patents
Telescopic short section and manifold system Download PDFInfo
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- CN115681644A CN115681644A CN202211192554.7A CN202211192554A CN115681644A CN 115681644 A CN115681644 A CN 115681644A CN 202211192554 A CN202211192554 A CN 202211192554A CN 115681644 A CN115681644 A CN 115681644A
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- 239000012530 fluid Substances 0.000 claims abstract description 86
- 238000007789 sealing Methods 0.000 claims abstract description 82
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 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
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Abstract
The invention relates to a telescopic short section and a manifold system, wherein the telescopic short section comprises two connectors and a tubular mandrel, fluid channels and mandrel moving channels are arranged in the connectors, one fluid channel is a straight channel or a bent channel, the other fluid channel is a straight channel or a bent channel, the two mandrel moving channels are both straight channels and are communicated with the corresponding fluid channels, bosses are arranged on the outer walls of the two ends of the mandrel, the two ends of the mandrel are respectively in sealing sliding fit in one mandrel moving channel, the bosses are positioned in the mandrel moving channels, the end part of the connector on one side of the opening of the mandrel moving channel is connected with an end cover, and the end cover is used for limiting the bosses. 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, easiness in operation and long service life.
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 the manifold system leaves a factory, the condition that the length of the pipeline of the intermediate connection section is not proper often occurs in the connection process of the manifold system, the adjustment range of the manifold system is limited, the device placement position and the manifold specification can be adjusted repeatedly often 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 two connectors and a tubulose dabber, be equipped with fluid passage and dabber removal passageway in the connector, one of them fluid passage is straight passageway or curved passageway, another fluid passage is straight passageway or curved passageway, two dabber removal passageway be straight passageway and with correspond the fluid passage intercommunication, the outer wall at dabber both ends is equipped with the boss, the both ends of dabber are sealed sliding fit respectively one in the dabber removal passageway, the boss is located in the dabber removal passageway, dabber removal passageway opening one side the connector end connection has the end cover, the end cover is used for right the boss is spacing.
By adopting the telescopic short section, the mandrel and the mandrel can move telescopically relative to each other through the sealed sliding fit of the mandrel and the mandrel moving channel of the straight channel, when the distance is inappropriate during the installation of a manifold system, the problem of high requirement on the position accuracy of equipment in 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 fluid channel of the straight channel or the bent channel is arranged, so that the corresponding connector is a straight connector or a bent connector, and the connector can be matched with wider use requirements in a manifold system; when the length of the telescopic short section meets the requirement and is connected with a manifold system, the mandrel is balanced due to the mutual offset of the axial forces of high-pressure fluids at two ends, when the manifold system vibrates, the installation length of the telescopic short section can be changed, the length of the telescopic short section is compensated through the axial movement of the mandrel in the two connectors, and the mandrel is prevented from falling off through the matching of the end cover and the lug boss, so that the vibration of the manifold system is reduced or eliminated; the telescopic short section has the advantages of simple structure, convenience in maintenance, easiness in operation and long service life.
Preferably, the end of the connector on the side of the opening of the fluid passage is provided with a first connection hole for flange connection.
Wherein, first connecting hole is screw thread blind hole or bolt hole.
By adopting the structure, the first connecting hole for flange connection is arranged, the existing union threaded connection is changed into flange connection, the size of the through diameter of the manifold is increased, the efficiency of conveying fluid by the manifold system is effectively improved, and flexible extension and reliable connection can be realized at the same time.
Preferably, the included angle between the inlet axis and the outlet axis of the fluid channel is 0-180 degrees; when the included angle is 0 degree, the fluid channel is a straight channel, when the included angle is 90 degrees, the fluid channel is an L-shaped bent channel, and when the included angle is 180 degrees, the fluid channel is a U-shaped bent channel.
Preferably, the inlet axis of the mandrel coincides with the outlet axis or is arranged in parallel.
By adopting the structure, when the inlet axis and the outlet axis of the mandrel are coincided, the mandrel is a straight-through pipe, when the inlet axis and the outlet axis of the mandrel are arranged in parallel, the mandrel is a curved-through pipe, the mandrel and the curved-through pipe can meet the requirements of reciprocating movement, and particularly, when the mandrel is the curved-through pipe, the mandrel can meet the condition that a manifold to be connected has a certain dislocation amount.
Preferably, a circle of the boss is arranged along the outer wall of the mandrel.
Preferably, the end part of the connecting head at one side of the opening of the mandrel moving channel is provided with a second connecting hole, the second connecting hole is matched with a connecting piece, and the end cover is connected to the connecting head through the connecting piece.
The second connecting hole is a threaded blind hole or a bolt hole, and the connecting piece is a screw or a bolt.
Preferably, a sealing ring annular groove is formed in the end portion of the connecting head on the opening side of the fluid channel, and the sealing ring annular groove is used for arranging a flange sealing ring.
Preferably, a sealing element is arranged between the end cover and the connecting surface of the connecting head and/or the sealing element is arranged between the end cover and the connecting surface of the mandrel.
Preferably, the outer walls at the two ends of the mandrel are sequentially provided with an external thread, a sealing surface and a boss from outside to inside, the sealing surface is sleeved with a sealing assembly, the external thread is matched with a locking nut, the locking nut and the boss are matched to fasten the sealing assembly, and the sealing assembly abuts against the outer wall of the mandrel and the inner wall of the mandrel moving channel.
By adopting the structure, the locking nut, the sealing surface and the boss form a mounting groove on the outer wall of the end part of the mandrel, the sealing assembly is placed in the mounting groove, the size of the mounting groove is adjusted by adjusting the tightness degree of the locking nut, so that the sealing assembly deforms in the mounting groove, can be well abutted against the outer wall of the mandrel and the inner wall of the moving channel of the mandrel, and slides and seals the mandrel relative to the connector, thereby preventing high-pressure fluid from leaking.
The invention also provides a telescopic short section which comprises a connector and a tubular mandrel, wherein a fluid channel and a mandrel moving channel are arranged in the connector, the fluid channel is a straight channel or a bent channel, the mandrel moving channel is a straight channel and is communicated with the fluid channel, a boss is arranged on the outer wall of one end of the mandrel, one end of the mandrel provided with the boss is in sealed sliding fit in the mandrel moving channel, the boss is positioned in the mandrel moving channel, the end part of the connector on one side of the opening of the mandrel moving channel is connected with an end cover, and the end cover is used for limiting the boss.
By adopting the telescopic short section, the mandrel and the mandrel moving channel of the straight channel are in sealed sliding fit, so that the connector and the mandrel can move in a relatively telescopic manner, when the distance is inappropriate during installation of a manifold system, the problem of high requirement on the position accuracy of equipment in the traditional manifold system connection can be effectively solved without repeatedly adjusting the equipment placing position and the manifold specification, and the convenience of connection is ensured; the fluid channel of the straight channel or the bent channel is arranged, so that the corresponding connector is a straight connector or a bent connector, and the connector can be matched with wider use requirements in a manifold system; when the manifold system vibrates, the installation length of the telescopic short section changes, the length of the telescopic short section is compensated through the axial movement of the mandrel in the connector, and the mandrel is prevented from falling off through the matching of the end cover and the boss, so that the vibration of the manifold system is reduced or eliminated; the telescopic short section has the advantages of simple structure, convenience in maintenance, easiness in operation and long service life.
Preferably, the included angle between the inlet axis and the outlet axis of the fluid channel is 0-180 degrees; when the included angle is 0 degree, the fluid channel is a straight channel, when the included angle is 90 degrees, the fluid channel is an L-shaped bent channel, and when the included angle is 180 degrees, the fluid channel is a U-shaped bent channel.
Preferably, the inlet axis of the mandrel coincides with the outlet axis or is arranged in parallel.
By adopting the structure, when the inlet axis and the outlet axis of the mandrel are coincided, the mandrel is a straight-through pipe, when the inlet axis and the outlet axis of the mandrel are arranged in parallel, the mandrel is a curved-through pipe, the mandrel and the curved-through pipe can meet the requirements of reciprocating movement, and particularly, when the mandrel is the curved-through pipe, the mandrel can meet the condition that a manifold to be connected has a certain dislocation amount.
Preferably, a circle of the boss is arranged along the outer wall of the mandrel.
Preferably, the end part of the connecting head at one side of the opening of the mandrel moving channel is provided with a second connecting hole, the second connecting hole is matched with a connecting piece, and the end cover is connected to the connecting head through the connecting piece.
The second connecting hole is a threaded blind hole or a bolt hole, and the connecting piece is a screw or a bolt.
Preferably, a sealing element is arranged between the end cover and the connecting surface of the connecting head and/or the sealing element is arranged between the end cover and the connecting surface of the mandrel.
Preferably, the outer wall of one end of the mandrel, which is provided with the boss, is sequentially provided with an external thread, a sealing surface and the boss from outside to inside, the sealing surface is sleeved with a sealing assembly, the external thread is matched with a locking nut, the locking nut and the boss are matched to fasten the sealing assembly, and the sealing assembly abuts against the outer wall of the mandrel and the inner wall of the mandrel moving channel.
By adopting the structure, the locking nut, the sealing surface and the boss form a mounting groove on the outer wall of the end part of the mandrel, the sealing component is placed in the mounting groove, the size of the mounting groove is adjusted by adjusting the tightness degree of the locking nut, so that the sealing component deforms in the mounting groove, can be well abutted against the outer wall of the mandrel and the inner wall of the mandrel moving channel, and the mandrel is in sliding sealing relative to the connector, thereby preventing high-pressure fluid from leaking.
Preferably, a first connecting hole for flange connection is formed in the end portion of the connecting head on one side of the opening of the fluid passage, and a third connecting hole for flange connection is formed in the other end of the mandrel.
The first connecting hole is a threaded blind hole or a bolt hole, and the third connecting hole is a threaded blind hole or a bolt hole.
By adopting the structure, the first connecting hole and the third connecting hole which are used for flange connection are arranged, the existing union threaded connection is changed into flange connection, the size of the drift diameter of the manifold is increased, the efficiency of conveying fluid by the manifold system is effectively improved, and flexible expansion and reliable connection can be realized at the same time.
Further preferably, a sealing ring annular groove is formed in the end portion of the connecting head on one side of the opening of the fluid channel, a sealing ring mounting groove is formed in the end portion of the mandrel, which is provided with the third connecting hole, and the sealing ring annular groove and the sealing ring mounting groove are both used for arranging a flange sealing ring.
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 joint.
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 mandrel is in sealed sliding fit with the mandrel moving channel of the straight channel, so that the connector and the mandrel can move telescopically relative to each other, when the distance is inappropriate during installation of a manifold system, the problem that the traditional manifold system is high in requirement on the position accuracy of equipment without repeatedly adjusting the equipment placing position and the manifold specification can be effectively solved, and the convenience of connection is ensured;
2. according to the telescopic short section, the fluid channel of the straight channel or the bent channel is arranged, so that the corresponding connector is a straight connector or a bent connector, and the telescopic short section can be matched with wider use requirements in a manifold system;
3. according to the telescopic short section, the first connecting hole or the third connecting hole for flange connection is arranged, the existing union threaded connection is changed into flange connection, the drift diameter size of a manifold is increased, the efficiency of conveying fluid by the manifold system is effectively improved, and flexible telescopic and reliable connection can be realized at the same time;
4. according to the telescopic short section, when a manifold system vibrates, the installation length of the telescopic short section changes, the length of the telescopic short section is compensated through the axial movement of the mandrel in the connector, and the mandrel is prevented from falling off through the matching of the end cover and the boss, so that the vibration of the manifold system 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 joint in embodiment 1;
fig. 2 is a schematic cross-sectional view of the connecting head in embodiment 1;
FIG. 3 is a schematic cross-sectional view of the mandrel in example 1;
FIG. 4 is a schematic sectional view of a telescopic short joint in embodiment 1;
FIG. 5 is a third schematic sectional view of the telescopic short joint in embodiment 1;
FIG. 6 is a first schematic cross-sectional structural view of a telescopic short section in embodiment 2;
FIG. 7 is a schematic sectional view showing the mandrel in example 2;
FIG. 8 is a schematic sectional view of a telescopic short joint in embodiment 2;
fig. 9 is a schematic cross-sectional structural diagram of a telescopic short joint in embodiment 2.
The labels in the figure are: 1-connector, 2-lock nut, 3-sealing component, 4-mandrel, 5-connector, 6-end cover, 7-sealing ring annular groove, 8-first connecting hole, 9-fluid channel, 10-mandrel moving channel, 11-second connecting hole, 12-external thread, 13-sealing surface, 14-boss, 15-third connecting hole, and 16-sealing ring mounting groove.
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 are not intended to limit the invention.
Example 1
As shown in fig. 1 to 5, the telescopic short joint of the present invention includes two connectors 1 and a tubular mandrel 4.
A fluid channel 9 and a mandrel moving channel 10 are arranged in the connector 1, wherein one fluid channel 9 is a straight channel or a bent channel, and the other fluid channel 9 is a straight channel or a bent channel, namely, the included angle between the inlet axis and the outlet axis of the fluid channel 9 ranges from 0 degree to 180 degrees; when the included angle is 0, the fluid channel 9 is a straight channel, when the included angle is 90 degrees, the fluid channel 9 is an L-shaped bent channel, and when the included angle is 180 degrees, the fluid channel 9 is a U-shaped bent channel (not shown); the fluid channel 9 shown in fig. 1 and 2 is a straight channel, the corresponding connecting head 1 is a straight joint, the fluid channel 9 shown in fig. 4 is an L-shaped bent channel, the fluid channel 9 shown in fig. 5 is a zigzag bent channel, and the corresponding connecting head 1 is a bent joint.
As shown in fig. 1, 2, 4 and 5, both the mandrel moving channels 10 are straight channels and communicate with the corresponding fluid channels 9, the communication ends of the mandrel moving channels 10 and the fluid channels 9 and the communication ends of the fluid channels 9 and the mandrel moving channels 10 are coaxially arranged, and the inner diameter of the mandrel moving channel 10 is larger than that of the fluid channels 9.
As shown in fig. 3, the mandrel 4 is a straight-through pipe, that is, the inlet axis and the outlet axis of the mandrel 4 are coincided, the outer walls of the two ends of the mandrel 4 are sequentially provided with an external thread 12, a sealing surface 13 and a circle of boss 14 from outside to inside, as shown in fig. 1, 4 and 5, the outer diameter of the boss 14 matches the inner diameter of the mandrel moving channel 10, and the inner diameter of the mandrel 4 matches the inner diameter of the fluid channel 9.
As shown in fig. 1, 4 and 5, two ends of the mandrel 4 are respectively in sealing sliding fit in one of the mandrel moving channels 10, and the boss 14 is located in the mandrel moving channel 10; specifically, a sealing assembly 3 is sleeved on the sealing surface 13, the external thread 12 is matched with a lock nut 2, the lock nut 2 and the boss 14 are matched to fasten the sealing assembly 3, and the sealing assembly 3 abuts against the outer wall of the mandrel 4 and the inner wall of the mandrel moving channel 10; with the structure, the locking nut 2, the sealing surface 13 and the boss 14 form a mounting groove on the outer wall of the end part of the mandrel 4, the sealing component 3 is placed in the mounting groove, the size of the mounting groove is adjusted by adjusting the tightness degree of the locking nut 2, so that the sealing component 3 deforms in the mounting groove, can well abut against the outer wall of the mandrel 4 and the inner wall of the mandrel moving channel 10, and the mandrel 4 is in sliding seal relative to the connector 1, thereby preventing high-pressure fluid from leaking.
As shown in fig. 1, 4 and 5, an end cover 6 is connected to an end portion of the connector 1 on an opening side of the mandrel moving channel 10, and the end cover 6 is used for limiting the boss 14; specifically, the dabber removes 10 open sides the 1 tip of connector is equipped with second connecting hole 11, second connecting hole 11 cooperates with connecting piece 5, end cover 6 passes through connecting piece 5 connect in connector 1.
In a specific embodiment, a sealing element is arranged between the connecting surface of the end cover 6 and the connecting head 1 and/or between the connecting surface of the end cover 6 and the mandrel 4.
As shown in fig. 1, 2, 4 and 5, a sealing ring annular groove 7 and a first connecting hole 8 for flange connection are formed in the end of the connecting head 1 on the side of the opening of the fluid passage 9, and the sealing ring annular groove 7 is used for installing a flange sealing ring.
According to the specific structure of the connector 1, the first connecting hole 8 is a threaded blind hole or a bolt hole, the second connecting hole 11 is a threaded blind hole or a bolt hole, and the connecting piece 5 is a screw or a bolt.
In a particular embodiment, the inlet axis of the mandrel 4 is arranged parallel to the outlet axis; by adopting the structure, the mandrel 4 is a curved tube at the moment, but the mandrel can still meet the requirement of reciprocating movement, and the condition that a manifold to be connected has a certain dislocation amount can be met.
In a specific embodiment, the inlet axis and the outlet axis of the mandrel 4 form an angle, and with this structure, the mandrel 4 is a V-shaped tube, but the requirement of reciprocating movement can still be met, and the adjustment of the manifold to be connected in the space can be met.
According to the telescopic short section, the mandrel 4 is in sealed sliding fit with the mandrel moving channel 10 of the straight channel, so that the connector 1 and the mandrel 4 can move telescopically relative to each other, when the distance for installing a manifold system is inappropriate, the device placement position and the manifold specification do not need to be adjusted repeatedly, only one telescopic short section of the embodiment needs to be added as supplement, and the telescopic short section is adjusted to an appropriate length for connection, so that the problem that the traditional manifold system connection has high requirements on the device position accuracy can be effectively solved, and the connection convenience is ensured; the fluid channel 9 of the straight channel or the bent channel is arranged, so that the corresponding connecting head 1 is a straight joint or a bent joint, and the connecting head can be matched with wider use requirements in a manifold system; the first connecting hole 8 for flange connection is arranged, the existing union threaded connection is changed into flange connection, the size of the drift diameter of the manifold is increased, the efficiency of conveying fluid by the manifold system is effectively improved, and flexible expansion and reliable connection can be realized at the same time; when the length of the telescopic short section meets the requirement and is connected with a manifold system, the mandrel 4 is balanced due to mutual offset of the axial force of high-pressure fluid at two ends, when the manifold system vibrates, the installation length of the telescopic short section changes, the mandrel 4 axially moves in the two connectors 1 to compensate the length of the telescopic short section, and the mandrel 4 is prevented from falling off through the matching of the end cover 6 and the boss 14, so that the vibration of the manifold system is reduced or eliminated; the telescopic short section has the advantages of simple structure, convenience in maintenance, easiness in operation and long service life.
Example 2
As shown in fig. 6 to 9, the telescopic short joint of the present invention includes a connecting head 1 and a tubular mandrel 4.
A fluid channel 9 and a mandrel moving channel 10 are arranged in the connector 1, the fluid channel 9 is a straight channel or a bent channel, namely, the included angle between the inlet axis and the outlet axis of the fluid channel 9 ranges from 0 degree to 180 degrees; when the included angle is 0, the fluid channel 9 is a straight channel, when the included angle is 90 degrees, the fluid channel 9 is an L-shaped bent channel, and when the included angle is 180 degrees, the fluid channel 9 is a U-shaped bent channel (not shown); the fluid channel 9 shown in fig. 6 is a straight channel, the corresponding connecting head 1 is a straight joint, the fluid channel 9 shown in fig. 8 is an L-shaped bent channel, the fluid channel 9 shown in fig. 9 is a bent line-shaped bent channel, and the corresponding connecting head 1 is a bent joint.
As shown in fig. 6, 8 and 9, the mandrel moving channel 10 is a straight channel and is communicated with the fluid channel 9, a communication end of the mandrel moving channel 10 and the fluid channel 9 and a communication end of the fluid channel 9 and the mandrel moving channel 10 are coaxially arranged, and an inner diameter of the mandrel moving channel 10 is larger than an inner diameter of the fluid channel 9.
As shown in fig. 7, the mandrel 4 is a straight-through pipe, that is, an inlet axis and an outlet axis of the mandrel 4 are overlapped, an external thread 12, a sealing surface 13 and a circle of boss 14 are sequentially arranged on the outer wall of one end of the mandrel 4 from outside to inside, a sealing ring mounting groove 16 and a third connecting hole 15 for flange connection are arranged at the other end of the mandrel 4, and the sealing ring mounting groove 16 is used for arranging a flange sealing ring; as shown in fig. 6, 8 and 9, the outer diameter of the boss 14 matches the inner diameter of the mandrel moving passage 10, and the inner diameter of the mandrel 4 matches the inner diameter of the fluid passage 9.
As shown in fig. 6, 8 and 9, one end of the mandrel 4 provided with the boss 14 is in sealed sliding fit in the mandrel moving channel 10, and the boss 14 is positioned in the mandrel moving channel 10; specifically, a sealing assembly 3 is sleeved on the sealing surface 13, the external thread 12 is matched with a lock nut 2, the lock nut 2 and the boss 14 are matched to fasten the sealing assembly 3, and the sealing assembly 3 abuts against the outer wall of the mandrel 4 and the inner wall of the mandrel moving channel 10; with the structure, the locking nut 2, the sealing surface 13 and the boss 14 form a mounting groove on the outer wall of the end part of the mandrel 4, the sealing component 3 is placed in the mounting groove, the size of the mounting groove is adjusted by adjusting the tightness degree of the locking nut 2, so that the sealing component 3 deforms in the mounting groove, can well abut against the outer wall of the mandrel 4 and the inner wall of the mandrel moving channel 10, and the mandrel 4 is in sliding seal relative to the connector 1, thereby preventing high-pressure fluid from leaking.
As shown in fig. 6, 8 and 9, an end cover 6 is connected to an end portion of the connecting head 1 on an opening side of the mandrel moving channel 10, and the end cover 6 is used for limiting the boss 14; specifically, the mandrel moving channel 10 is provided with a second connecting hole 11 at one side of the opening of the connector 1, the second connecting hole 11 is matched with a connecting piece 5, and the end cover 6 is connected to the connector 1 through the connecting piece 5.
In a specific embodiment, a sealing element is arranged between the connecting surface of the end cap 6 and the connecting head 1 and/or between the connecting surface of the end cap 6 and the mandrel 4.
As shown in fig. 6, 8 and 9, a sealing ring annular groove 7 and a first connecting hole 8 for flange connection are formed at the end of the connecting head 1 on the opening side of the fluid passage 9, and the sealing ring annular groove 7 is used for arranging a flange sealing ring.
According to the specific structure of the connector 1, the first connecting hole 8 is a threaded blind hole or a bolt hole, the second connecting hole 11 is a threaded blind hole or a bolt hole, the third connecting hole 15 is a threaded blind hole or a bolt hole, and the connecting piece 5 is a screw or a bolt.
In a particular embodiment, the inlet axis of the mandrel 4 is arranged parallel to the outlet axis; by adopting the structure, the mandrel 4 is a curved tube at the moment, but the mandrel can still meet the requirement of reciprocating movement, and the condition that a manifold to be connected has a certain dislocation amount can be met.
In a specific embodiment, the inlet axis and the outlet axis of the mandrel 4 form an angle, and with this structure, the mandrel 4 is a V-shaped tube, but the requirement of reciprocating movement can still be met, and the adjustment of the manifold to be connected in the space can be met.
According to the telescopic short section, the mandrel 4 and the mandrel moving channel 10 of the straight channel are in sealed sliding fit, so that the connector 1 and the mandrel 4 can move in a relatively telescopic manner, when the distance for installing a manifold system is inappropriate, the equipment placing position and the manifold specification do not need to be adjusted repeatedly, only one telescopic short section of the embodiment needs to be added as a supplement, and the telescopic short section is adjusted to an appropriate length for connection, so that the problem that the traditional manifold system is high in requirement on the equipment position accuracy can be effectively solved, and the connection convenience is ensured; the fluid channel 9 of the straight channel or the bent channel is arranged, so that the corresponding connecting head 1 is a straight joint or a bent joint, and the connecting head can be matched with wider use requirements in a manifold system; the first connecting hole 8 and the third connecting hole 15 for flange connection are arranged, the existing union threaded connection is changed into flange connection, the size of the drift diameter of the manifold is increased, the efficiency of conveying fluid by the manifold system is effectively improved, and flexible expansion and reliable connection can be realized at the same time; when a manifold system vibrates, the installation length of the telescopic short section changes, the length of the telescopic short section is compensated through the axial movement of the mandrel 4 in the connector 1, and the mandrel 4 is prevented from falling off through the matching of the end cover 6 and the boss 14, so that the vibration of the manifold system is reduced or eliminated; the telescopic short section has the advantages of simple structure, convenience in maintenance, easiness in operation and long service life.
Example 3
As shown in fig. 1 to 9, 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 as described in embodiment 1;
and/or other adjacent two of said conduits are connected by a telescoping sub as described in embodiment 2.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (13)
1. The utility model provides a telescopic short section, its characterized in that includes two connectors (1) and a tubulose dabber (4), be equipped with fluid passage (9) and dabber removal passageway (10) in connector (1), one of them fluid passage (9) are straight passageway or curved passageway, another fluid passage (9) are straight passageway or curved passageway, two dabber removal passageway (10) are straight passageway and with correspond fluid passage (9) intercommunication, the outer wall at dabber (4) both ends is equipped with boss (14), the both ends of dabber (4) are sealed respectively and slide to cooperate one in dabber removal passageway (10), boss (14) are located in dabber removal passageway (10), dabber removal passageway (10) opening one side connector (1) end connection has end cover (6), end cover (6) are used for right boss (14) are spacing.
2. The telescopic sub according to claim 1, characterized in that the end of the coupling head (1) on the side of the opening of the fluid channel (9) is provided with a first connection hole (8) for flange connection.
3. A telescopic sub according to claim 1, characterized in that the inlet axis of said mandrel (4) coincides with the outlet axis or is arranged parallel thereto.
4. The telescopic short section according to claim 1, characterized in that the end of the connector (1) on the side of the opening of the mandrel moving channel (10) is provided with a second connecting hole (11), the second connecting hole (11) is matched with a connecting piece (5), and the end cover (6) is connected to the connector (1) through the connecting piece (5).
5. The telescopic short section according to claim 1, characterized in that the end of the connector (1) on the side of the opening of the fluid channel (9) is provided with a sealing ring annular groove (7), and the sealing ring annular groove (7) is used for arranging a flange sealing ring.
6. The telescopic short section according to claim 1, characterized in that a sealing element is arranged between the end cover (6) and the connecting surface of the connecting head (1) and/or the sealing element is arranged between the end cover (6) and the connecting surface of the mandrel (4).
7. The telescopic short section according to any one of claims 1 to 6, characterized in that the outer walls of the two ends of the mandrel (4) are provided with an external thread (12), a sealing surface (13) and the boss (14) in sequence from outside to inside, the sealing surface (13) is sleeved with a sealing assembly (3), the external thread (12) is matched with a locking nut (2), the sealing assembly (3) is fastened by matching the locking nut (2) and the boss (14), and the sealing assembly (3) abuts against the outer wall of the mandrel (4) and the inner wall of the mandrel moving channel (10).
8. The utility model provides a telescopic short section, its characterized in that includes a connector (1) and a tubulose dabber (4), be equipped with fluid passage (9) and dabber removal passageway (10) in connector (1), fluid passage (9) are straight passageway or curved passageway, dabber removal passageway (10) for straight passageway and with fluid passage (9) intercommunication, the outer wall of dabber (4) one end is equipped with boss (14), sets up boss (14) the sealed sliding fit of one end of dabber (4) in dabber removal passageway (10), boss (14) are located in dabber removal passageway (10), dabber removal passageway (10) opening one side connector (1) end connection has end cover (6), end cover (6) are used for right boss (14) are spacing.
9. The telescopic short piece according to claim 8, characterized in that a sealing element is arranged between the end cap (6) and the connecting surface of the connecting head (1) and/or between the end cap (6) and the connecting surface of the mandrel (4).
10. The telescopic short section according to claim 8, characterized in that an external thread (12), a sealing surface (13) and the boss (14) are sequentially arranged on the outer wall of one end of the mandrel (4) provided with the boss (14) from outside to inside, a sealing assembly (3) is sleeved on the sealing surface (13), the external thread (12) is matched with a lock nut (2), the seal assembly (3) is fastened by matching of the lock nut (2) and the boss (14), and the sealing assembly (3) abuts against the outer wall of the mandrel (4) and the inner wall of the mandrel moving channel (10).
11. The telescopic short piece according to any of claims 8-10, characterized in that the end of the connector (1) on the side of the opening of the fluid channel (9) is provided with a first connection hole (8) for flange connection, and the other end of the mandrel (4) is provided with a third connection hole (15) for flange connection.
12. The telescopic short section according to claim 11, wherein a sealing ring annular groove (7) is formed in the end portion of the connector (1) on the opening side of the fluid passage (9), a sealing ring mounting groove (16) is formed in the end portion of the mandrel (4) where the third connecting hole (15) is formed, and both the sealing ring annular groove (7) and the sealing ring mounting groove (16) are used for mounting a flange sealing ring.
13. 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 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211192554.7A CN115681644A (en) | 2022-09-28 | 2022-09-28 | Telescopic short section and manifold system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211192554.7A CN115681644A (en) | 2022-09-28 | 2022-09-28 | Telescopic short section and manifold system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115681644A true CN115681644A (en) | 2023-02-03 |
Family
ID=85063776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211192554.7A Pending CN115681644A (en) | 2022-09-28 | 2022-09-28 | Telescopic short section and manifold system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115681644A (en) |
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