CN103672257B - A kind of underground fast hydraulic joint - Google Patents

A kind of underground fast hydraulic joint Download PDF

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Publication number
CN103672257B
CN103672257B CN201310753003.8A CN201310753003A CN103672257B CN 103672257 B CN103672257 B CN 103672257B CN 201310753003 A CN201310753003 A CN 201310753003A CN 103672257 B CN103672257 B CN 103672257B
Authority
CN
China
Prior art keywords
valve
joint
sleeve
seal
conversion adapter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201310753003.8A
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Chinese (zh)
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CN103672257A (en
Inventor
程友祥
田龙
章涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Qianwei Technology Group Co., Ltd.
Original Assignee
CHONGQING QIANWEI OFFSHORE PETROLEUM ENGINEERING & EQUIPMENT Co Ltd
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Publication date
Application filed by CHONGQING QIANWEI OFFSHORE PETROLEUM ENGINEERING & EQUIPMENT Co Ltd filed Critical CHONGQING QIANWEI OFFSHORE PETROLEUM ENGINEERING & EQUIPMENT Co Ltd
Priority to CN201310753003.8A priority Critical patent/CN103672257B/en
Publication of CN103672257A publication Critical patent/CN103672257A/en
Application granted granted Critical
Publication of CN103672257B publication Critical patent/CN103672257B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00Couplings of the quick-acting type
    • F16L37/28Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0225Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings

Abstract

The invention discloses a kind of underground fast hydraulic joint, comprise tool joint pin and female joint, described tool joint pin and female joint offer fluid passage all vertically, the first fluid stopping spring spool is provided with in the fluid passage of described tool joint pin, the second fluid stopping spring spool is provided with in the fluid passage of described female joint, female joint rear portion is stretched in described tool joint pin front portion, first valve rod of described first fluid stopping spring spool and the second valve rod of the second fluid stopping spring spool are just to setting, when tool joint pin is docked with female joint, described first valve rod front end and the second valve rod rear end push up pressure mutually, tool joint pin is communicated with the fluid passage of female joint.The present invention can realize joint break-make fast, is convenient to dock fast and dismantle, good sealing effect.

Description

A kind of underground fast hydraulic joint
Technical field
The present invention relates to marine oil and gas exploitation technology field, specifically a kind of underground fast hydraulic joint connected for oil gas drilling manifold.
Background technique
In hydraulic pipe line, usually can run into the situation that pipeline is connected.In the connection of pipeline or the process of disconnection, how to ensure the seal degree of pipeline, and the Placement optimizing jointing is a technical problem.Particularly ocean environment very in, the technical difficulty of mud oil on ocean is more many greatly than land mud oil.For adapting to ocean specific work environments, have corresponding technical requirements to supporting oil drilling and extracting equipment, the most basic technical requirements has not allowed leakage.Many oil pipes can be used in petroleum production and transportation process, oil pipe arrangement is intricate, and generally length is longer, also have the place of many bendings, connect so the connection between oil pipe need use joint to reduce tubing length and floor space, jointing must have higher sealing and compression resistance, and preferably can realize quick connection, present oil connection adopts double thread screw or Flange joint mostly, need special tool that tubing spinning just can be completed when being interconnected between oil pipe or dismantling, operator are time-consuming, effort, simultaneously, double thread screw needs very high degree of adaptability when connecting, not only reduce working efficiency like this, add cost and also affect job schedule simultaneously.
Existing rapid pipe joint is generally used for flexible pipe joint, and it generally comprises tool joint pin and female joint, during use, tool joint pin is docked with female joint, but after generally tool joint pin is docked with female joint, could pass into fluid to pipeline.Before tool joint pin is docked with female joint, because tool joint pin or female joint can not pressure-bearings, pipeline can not pass into fluid.In addition, existing rapid pipe joint, the internal structure more complicated of tool joint pin and female joint, in baroque situation, sealability is difficult to ensure, particularly under the hyperbaric environments such as marine field, make the complex operation that tool joint pin communicates with female joint internal channel when tool joint pin is docked with female joint, closing speed is slow.Existing rapid pipe joint sealing effect is bad, easily causes fluid to leak.
The deficiencies in the prior art are: the joint of existing quick mounting can not take into account the effect of instant cutout and quick clamping, and snap fit is relatively traditional, the mode that many employings are threaded, need to use particular tool in dismounting or connection, operate pretty troublesome, operator are wasted time and energy, and pipeline joint can not be made in operation quickly, complicated structure simultaneously, constituent elements is more, causes its sealing not to be guaranteed.
Summary of the invention
The object of the present invention is to provide a kind of energy rapid abutting joint realize quick on-off with being separated, and be applicable to the underground fast hydraulic joint of ocean deepwater environment.
For achieving the above object, technological scheme of the present invention is as follows: a kind of underground fast hydraulic joint, comprise tool joint pin and female joint, described tool joint pin and female joint offer fluid passage all vertically, the first fluid stopping spring spool is provided with in the fluid passage of described tool joint pin, the second fluid stopping spring spool is provided with in the fluid passage of described female joint, female joint rear portion is stretched in described tool joint pin front portion, first valve rod of described first fluid stopping spring spool and the second valve rod of the second fluid stopping spring spool are just to setting, when tool joint pin is docked with female joint, described first valve rod front end and the second valve rod rear end push up pressure mutually, tool joint pin is communicated with the fluid passage of female joint.
Adopt said structure, first fluid stopping spring spool is for controlling blocking or conducting of the fluid passage of tool joint pin, described second fluid stopping spring spool is for controlling blocking or conducting of the fluid passage of female joint, when docking, female joint rear portion is stretched in tool joint pin front portion, mutually pressure is pushed up by the first valve rod of the first fluid stopping spring spool and the second valve rod of the second fluid stopping spring spool, make the fluid passage conducting respectively of tool joint pin and female joint, tool joint pin is communicated with the fluid passage of female joint, tool joint pin and female joint are connected to pipeline, thus make two pipelines being docked and connected by this tool joint pin and female joint, after tool joint pin is taken out from female joint rear portion, the fluid passage of tool joint pin and female joint is blocked by the first fluid stopping spring spool and the second fluid stopping spring spool respectively, this underground fast hydraulic joint, can realize docking fast and being separated, easy to operate.
On the outer wall of described tool joint pin and female joint, swivel nut has same nut, when described tool joint pin and female joint docking, is locked by this nut.
Female joint can be arranged on same fixed plate in batches, dock with the batch tool joint pin be arranged on another fixed plate, and by the clamping mechanism on fixed plate, tool joint pin and female joint are fixed, tool joint pin can be connected use separately with female joint, may be used for shallow-water environment, after tool joint pin and female joint docking, will be locked between the two by nut, unscrew nut during separation, extract tool joint pin.
The joint body that described tool joint pin comprises the first conversion adapter and is connected with this first conversion adapter front sealing, described first conversion adapter and joint body offer center hole all vertically, the center hole of described first conversion adapter and joint body communicates and forms the fluid passage of described tool joint pin, the first valve pocket of hollow is formed in the joint of described first conversion adapter and joint body, this first valve pocket is communicated with the fluid passage of joint body with the first conversion adapter, described first fluid stopping spring spool is arranged in this first valve pocket, the second conversion adapter that described female joint comprises connecting sleeve and is connected with this connecting sleeve front sealing, this second conversion adapter and connecting sleeve offer center hole all vertically, the center hole of this second conversion adapter and connecting sleeve communicates and forms the fluid passage of described female joint, the second valve pocket of hollow is formed in the joint of described second conversion adapter and connecting sleeve, this second valve pocket is communicated with the fluid passage of connecting sleeve with the second conversion adapter, described second fluid stopping spring spool is arranged in this second valve pocket, described joint body front portion is stretched in the center hole at connecting sleeve rear portion, the inwall in the anterior outer wall of this joint body and connecting sleeve posterior center hole is fitted, when docking, described first valve rod front end and the second valve rod rear end push up pressure mutually, second valve pocket is communicated with by center hole with the first valve pocket.
In use, first conversion adapter and the second conversion adapter connecting pipeline respectively, joint body front portion is stretched in the center hole at connecting sleeve rear portion, the inwall in the anterior outer wall of this joint body and connecting sleeve posterior center hole is fitted, when docking, first valve rod front end and the second valve rod rear end push up pressure mutually, and the second valve pocket is communicated with the center hole of connecting sleeve by joint body with the first valve pocket.
Described first fluid stopping spring spool comprises the first valve seat, first valve rod and the first spring, described first valve seat is arranged on the first valve pocket inwall, described first valve rod is axially set in the first valve pocket along the first conversion adapter, this the first valve rod front end is towards joint body, rear end is towards described first valve seat, this the first valve rod front portion is the first sleeve pipe of hollow, described first sleeve side walls offers the first pod apertures, this first sleeve pipe stretches in the fluid passage of joint body, the first valve seal is provided with between described first valve rod and the fluid passage of joint body, this first valve seal is positioned at the first pod apertures rear, first valve rod at this first valve seal rear is provided with the first bounding means, described first spring one end is connected to this first bounding means rear end, the other end is against the first valve seat front end, first valve seal is pressed in the first valve pocket front inner wall by described first bounding means, and limit the first valve rod and travel forward.
Adopt said structure, the center hole of the first valve pocket and joint body and the first conversion adapter is coaxially arranged, first valve pocket front end and back end is communicated with the center hole of joint body with the first conversion adapter respectively, joint body is used for docking with female joint, first conversion adapter is used for the pipeline such as oil pipe being connected, first valve seat is frame structure or Pierced structure, fluid can be allowed to pass through, first valve rod rear end can be located on the first valve seat or and the first valve seat between have gap, when not docking with female joint, first spring stretches makes the first bounding means be pressed in by the first valve seal on the sidewall of the first valve pocket front end, first valve rod is anterior, namely the first sleeve pipe and the first pod apertures are positioned at inside the center hole of joint body, first valve seal is positioned at the first pod apertures rear, also the center hole of joint body and the junction of the first valve pocket can be arranged in the center hole that can be arranged on joint body, sealing between first valve pocket and the center hole of joint body separates by the first valve seal, when this tool joint pin is connected with female joint, second valve rod of female joint is against the first valve rod front end, first valve rod is pressed backward, first spring continues compression, first pod apertures of the first valve rod front portion is retracted in the first valve pocket, and the first valve pocket is communicated with center hole with the first sleeve pipe, fluid can flow into the second valve pocket from the first sleeve pipe through the first pod apertures, only need during docking to press the first valve rod backward, the first spring-compressed is made to make the first pod apertures be retracted into the first valve pocket, fast conducting can be realized, after being separated with the first valve rod by the second valve rod of female joint, while the first spring reset, tool joint pin is blocked, break-make fast can be realized, easy to operate, and good sealing effect, the outer wall of the first sleeve pipe can be fitted with joint body center bore inner wall, further enhanced leaktightness effect.
Described second fluid stopping spring spool comprises the second valve seat, second valve rod and the second spring, described second valve seat is arranged on the second valve pocket inwall, described second valve rod is axially set in the second valve pocket along the second conversion adapter, this second valve rod rear end is towards connecting sleeve, front end is towards described second valve seat, this the second valve rod rear portion is the second sleeve pipe of hollow, described second sleeve side walls offers the second pod apertures, this second sleeve pipe stretches in the fluid passage of connecting sleeve, the second valve seal is provided with between described second valve rod and the fluid passage of connecting sleeve, this second valve seal is positioned at the second pod apertures front, second valve rod in this second valve seal front is provided with the second bounding means, described second spring one end is connected to this second bounding means front end, the other end is against the second valve seat rear end, second valve seal is pressed in the second valve pocket rear inside wall by described second bounding means, and limit the second valve rod and move backward, when described tool joint pin and female joint docking, described first valve rod front end and the second valve rod rear end push up pressure mutually, described first spring and the second spring-compressed, the part that first sleeve pipe is provided with the first pod apertures is retracted in the first valve pocket, the part that second sleeve pipe is provided with the second pod apertures is retracted in the second valve pocket, described first valve pocket and the second valve pocket are by the first pod apertures, first sleeve pipe, second sleeve pipe is communicated with the second pod apertures.
Structure and the working principle of this second fluid stopping spring spool and the first fluid stopping spring spool are similar, and just to setting, when not docking, first spring makes the first bounding means be pressed on by the first valve seal in the first valve pocket front inner wall, second spring makes the second bounding means be pressed on by the second valve seal in the second valve pocket rear inside wall, when tool joint pin and female joint docking, first valve rod front end and the second valve rod rear end push up pressure mutually, first spring and the second spring continue compression, the part that first sleeve pipe is provided with the first pod apertures is retracted in the first valve pocket, the part that second sleeve pipe is provided with the second pod apertures is retracted in the second valve pocket, first valve pocket and the second valve pocket are by the first pod apertures, first sleeve pipe, second sleeve pipe is communicated with the second pod apertures, the fluid passage of tool joint pin is communicated with the fluid passage of female joint.
The center bore inner wall of described connecting sleeve front portion is provided with seal cartridge, the first seal ring is provided with between sealing liner outer wall and the inwall of connecting sleeve, described connecting sleeve anterior by thread jacket at described second conversion adapter rear portion, described seal cartridge rear end is against on the step of connecting sleeve center bore inner wall setting, and be provided with main seal ring between sealing liner aft end and connecting sleeve, this main seal ring is arranged in seal cartridge rear inside wall, described seal cartridge front end is connected with the second conversion adapter rear end, pre-large post-small drum-shaped chamber is offered in described second conversion adapter rearward end, sealing lining front end is the conical seal (contact) face of indent, sealing lining and the second conversion adapter surround middle part described second valve pocket small in ends greatly, and the joint of sealing lining and the second conversion adapter is provided with static sealing ring, the second bump protection ring is provided with between this second conversion adapter rear end and inwall of connecting sleeve, the inwall of described connecting sleeve offers circular groove, this circular groove is positioned at the rear of seal cartridge, and back-up ring and the second seal ring are installed in this circular groove, described joint body front portion is tubulose, described first sleeve outer wall and the second sleeve pipe rear end outer wall are all fitted with joint body front inner wall, sealed by described main seal ring and the second seal ring between the anterior outer wall of this joint body and the inwall of female joint aft fluid passage.
Back-up ring is positioned at the second seal ring front, when this female joint is docked with tool joint pin, the connecting sleeve of female joint is inserted in the joint body front portion of tool joint pin, this second seal ring can seal between joint body outer wall and female joint fluid passage inwall, first seal ring and static sealing ring can be O type circles, material can select HNBR, i.e. hydrogenated nitrile-butadiene rubber, and the second bump protection ring can be made up of teflon and PTFE, main seal ring is arranged in seal cartridge rear inside wall, and fit with the step that connecting sleeve fluid passage inwall is arranged, can seal between seal cartridge rear end and the step of connecting sleeve on the one hand, can seal between the outer wall of joint body and female joint fluid passage inwall when tool joint pin is inserted on the other hand, and this main seal ring and the second seal ring, first seal ring, static sealing ring composition is multi-stage sealed, ensure the sealing effect between connecting sleeve and the second conversion adapter, ensure the sealing after tool joint pin access, Leakage prevention, this main seal ring is NHA seal type, PTFE material can be selected, NHA sealing is mainly used in high pressure, static, stroboscopic motion seals.
Described first bounding means comprises the first annular positive stop lug boss be arranged in the middle part of the first valve rod and the first valve gap be enclosed within this first annular positive stop lug boss outward, this the first valve gap front inner wall is connected with the first annular positive stop lug boss outer wall thread, described first spring one end is connected to this first annular positive stop lug boss rear end, the other end is connected to the first valve seat front end, it is anterior that first valve gap rear portion covers described first spring, described first valve seal is arranged on the first valve gap front end, when not docking, first spring elongates makes the first valve seal be pressed in the tapered slope of the first valve pocket front inner wall.
Described second bounding means comprises the second annular stop boss be arranged in the middle part of the second valve rod and the second valve gap be enclosed within this second annular stop boss outward, this the second valve gap rear inside wall is threaded with the second annular stop outer wall of boss, described second spring one end is connected to this second annular stop boss front end, the other end is connected to the second valve seat rear end, second valve gap rear portion covers described second spring rear portion, described second valve seal is arranged on the second valve gap rear end, when not docking, second spring elongates makes the second valve seal be pressed on the conical seal (contact) face of seal cartridge front end.
Pre-large post-small drum-shaped chamber is offered in described first conversion adapter front portion, described joint body rear portion by thread jacket outside described first conversion adapter front portion, this joint body and the first conversion adapter surround little described first valve pocket in large front end and back end, middle part, the first bump protection ring and the 3rd seal ring is provided with between this first conversion adapter front end and inwall of joint body, the diameter of described joint body and the first conversion adapter fluid passage is less than the diameter of described first valve pocket front end and back end, described first pod apertures is arranged on the rear portion of the first sleeve pipe, described second pod apertures is arranged on the front portion of the second sleeve pipe, described first pod apertures and the second pod apertures are 2-4, and be uniformly distributed along the first sleeve pipe and the second sleeve circumferential respectively.
Described first valve seat is identical with the second valve seat construction, be disc-shape, this first valve seat offers center hole, the first valve seat around this center hole offers through hole, the sidewall at described first valve pocket rear portion is provided with the first ring-shaped step, this the first valve seat rear end is against on this first ring-shaped step, first valve rod rear end is located in the center hole of the first valve seat, first spring overcoat is at the first valve rod rear portion, this first spring one end is against the first valve seat front end, and the other end is against the first annular positive stop lug boss rear end; The sidewall of described second valve pocket front portion is provided with the second ring-shaped step, described second valve seat front end is against on this second ring-shaped step, described second valve rod front end is located in the center hole of the second valve seat, second spring overcoat is anterior at the second valve rod, this second spring one end is against the second valve seat rear end, and the other end is against the second annular stop boss front end.
In the middle part of described connecting sleeve rear portion outer wall and joint body, on outer wall, swivel nut has same nut, when described tool joint pin and female joint docking, is locked by this nut.
The invention has the beneficial effects as follows: structure is simple, can realize joint break-make fast, and can under full pressure break-make; Be convenient to dock fast and dismantle simultaneously, shorten the docking operation time, simultaneously good seal performance, be applicable to deepwater environment and use, be applicable to shallow-water environment simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is stereogram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As illustrated in fig. 1 and 2, a kind of underground fast hydraulic joint, comprise tool joint pin 1 and female joint 2, tool joint pin 1 and female joint 2 offer fluid passage all vertically, the joint body 12 that tool joint pin 1 comprises the first conversion adapter 11 and is connected with this first conversion adapter 11 front sealing, first conversion adapter 11 and joint body 12 offer center hole all vertically, the center hole of the first conversion adapter 11 and joint body 12 communicates and forms the fluid passage of tool joint pin 1, the first valve pocket of hollow is formed in the joint of the first conversion adapter 11 and joint body 12, this first valve pocket is communicated with the fluid passage of joint body 12 with the first conversion adapter 11, the first fluid stopping spring spool is provided with in this first valve pocket, the second conversion adapter 21 that female joint 2 comprises connecting sleeve 22 and is connected with this connecting sleeve 22 front sealing, this second conversion adapter 21 and connecting sleeve 22 offer center hole all vertically, the center hole of this second conversion adapter 21 and connecting sleeve 22 communicates and forms the fluid passage of female joint 2, the second valve pocket of hollow is formed in the joint of the second conversion adapter 21 and connecting sleeve 22, this second valve pocket is communicated with the fluid passage of connecting sleeve 22 with the second conversion adapter 21, the second fluid stopping spring spool is provided with in this second valve pocket, first valve rod 101 of the first fluid stopping spring spool and the second valve rod 201 of the second fluid stopping spring spool are just to setting, joint body 12 front portion is stretched in the center hole at connecting sleeve 22 rear portion, the inwall in the anterior outer wall of this joint body 12 and connecting sleeve 22 posterior center hole is fitted, when tool joint pin 1 is docked with female joint 2, pressure is pushed up mutually in first valve rod 101 front end and the second valve rod 201 rear end, second valve pocket is communicated with by center hole with the first valve pocket, tool joint pin 1 is communicated with the fluid passage of female joint 2.
First fluid stopping spring spool comprises the first valve seat 102, first valve rod 101 and the first spring 103, first valve seat 102 is arranged on the first valve pocket inwall, first valve rod 101 is axially set in the first valve pocket along the first conversion adapter 11, this the first valve rod 101 front end is towards joint body 12, rear end is towards the first valve seat 102, this the first valve rod 101 front portion is the first sleeve pipe 104 of hollow, first sleeve pipe 104 sidewall offers the first pod apertures 105, this first sleeve pipe 104 stretches in the fluid passage of joint body 12, the first valve seal 106 is provided with between first valve rod 101 and the fluid passage of joint body 12, this first valve seal 106 is positioned at the first pod apertures 105 rear, first valve rod 101 at this first valve seal 106 rear is provided with the first bounding means, first spring 103 one end is connected to this first bounding means rear end, the other end is against the first valve seat 102 front end, first valve seal 106 is pressed in the first valve pocket front inner wall by the first bounding means, and limit the first valve rod 101 and travel forward.
Second fluid stopping spring spool comprises the second valve seat 202, second valve rod 201 and the second spring 203, second valve seat 202 is arranged on the second valve pocket inwall, second valve rod 201 is axially set in the second valve pocket along the second conversion adapter 11, this the second valve rod 201 rear end is towards connecting sleeve 22, front end is towards the second valve seat 202, this the second valve rod 201 rear portion is the second sleeve pipe 204 of hollow, second sleeve pipe 204 sidewall offers the second pod apertures 205, this second sleeve pipe 204 stretches in the fluid passage of connecting sleeve 22, the second valve seal 206 is provided with between second valve rod 201 and the fluid passage of connecting sleeve 22, this second valve seal 206 is positioned at the second pod apertures 205 front, second valve rod 201 in this second valve seal 206 front is provided with the second bounding means, second spring 203 one end is connected to this second bounding means front end, the other end is against the second valve seat 202 rear end, second valve seal 206 is pressed in the second valve pocket rear inside wall by the second bounding means, and limit the second valve rod 201 and move backward, when tool joint pin 1 and female joint 2 are docked, pressure is pushed up mutually in first valve rod 101 front end and the second valve rod 201 rear end, first spring 103 and the second spring 203 compress, the part that first sleeve pipe 104 is provided with the first pod apertures 105 is retracted in the first valve pocket, the part that second sleeve pipe 204 is provided with the second pod apertures 205 is retracted in the second valve pocket, first valve pocket and the second valve pocket are by the first pod apertures 105, first sleeve pipe 104, second sleeve pipe 204 is communicated with the second pod apertures 205.
The center bore inner wall of connecting sleeve 22 front portion is provided with seal cartridge 23, the first seal ring 24 is provided with between the inwall of sealing lining 23 outer wall and connecting sleeve 22, connecting sleeve 22 front portion by thread jacket at the second conversion adapter 21 rear portion, seal cartridge 23 rear end is against on the step of connecting sleeve 22 center bore inner wall setting, and be provided with main seal ring 29 between sealing lining 23 rear end and connecting sleeve 22, this main seal ring 29 is arranged in seal cartridge 23 rear inside wall, seal cartridge 23 front end is connected with the second conversion adapter 21 rear end, pre-large post-small drum-shaped chamber is offered in second conversion adapter 21 rearward end, sealing lining 23 front end is the conical seal (contact) face of indent, sealing lining 23 and the second conversion adapter 21 surround middle part the second valve pocket small in ends greatly, and the joint of sealing lining 23 and the second conversion adapter 21 is provided with static sealing ring 25, the second bump protection ring 26 is provided with between this second conversion adapter 21 rear end and inwall of connecting sleeve 22, the inwall of connecting sleeve 22 offers circular groove, this circular groove is positioned at the rear of seal cartridge 23, and back-up ring 27 and the second seal ring 28 are installed in this circular groove, joint body 12 front portion is tubulose, first sleeve pipe 104 outer wall and the second sleeve pipe 204 rear end outer wall are all fitted with joint body 12 front inner wall, sealed by main seal ring 29 and the second seal ring 28 between the inwall of the anterior outer wall of this joint body 12 and female joint 2 aft fluid passage.
First bounding means comprises the first annular positive stop lug boss 108 be arranged in the middle part of the first valve rod 101 and the first valve gap 107 be enclosed within this first annular positive stop lug boss 108 outward, this the first valve gap 107 front inner wall is connected with the first annular positive stop lug boss 108 outer wall thread, first spring 103 one end is connected to this first annular positive stop lug boss 108 rear end, the other end is connected to the first valve seat 102 front end, it is anterior that first valve gap 107 rear portion covers the first spring 103, first valve seal 106 is arranged on the first valve gap 107 front end, when not docking, first spring 103 extends and the first valve seal 106 is pressed in the tapered slope of the first valve pocket front inner wall.
Described second bounding means comprises the second annular stop boss 208 be arranged in the middle part of the second valve rod 201 and the second valve gap 207 be enclosed within this second annular stop boss 208 outward, this the second valve gap 207 rear inside wall is connected with the second annular stop boss 208 outer wall thread, described second spring 203 one end is connected to this second annular stop boss 208 front end, the other end is connected to the second valve seat 202 rear end, second valve gap 207 rear portion covers described second spring 203 rear portion, described second valve seal 206 is arranged on the second valve gap 207 rear end, when not docking, second spring 203 extends and the second valve seal 206 is pressed on the conical seal (contact) face of seal cartridge 23 front end.
Pre-large post-small drum-shaped chamber is offered in first conversion adapter 11 front portion, joint body 12 rear portion by thread jacket outside the first conversion adapter 11 front portion, this joint body 12 and the first conversion adapter 11 surround the first little valve pocket of large front end and back end, middle part, the first bump protection ring 110 and the 3rd seal ring 111 is provided with between this first conversion adapter 11 front end and inwall of joint body 12, the diameter of joint body 12 and the first conversion adapter 11 fluid passage is less than the diameter of the first valve pocket front end and back end, first pod apertures 105 is arranged on the rear portion of the first sleeve pipe 104, second pod apertures 205 is arranged on the front portion of the second sleeve pipe 204, first pod apertures 105 and the second pod apertures 205 are 2-4, and be uniformly distributed along the first sleeve pipe 104 and the second sleeve pipe 204 circumference respectively.
First valve seat 102 is identical with the second valve seat 202 structure, be disc-shape, this first valve seat 102 offers center hole, the first valve seat 102 around this center hole offers through hole, the sidewall at the first valve pocket rear portion is provided with the first ring-shaped step 109, this the first valve seat 102 rear end is against on this first ring-shaped step 109, first valve rod 101 rear end is located in the center hole of the first valve seat 102, the first valve rod 101 rear portion is enclosed within outside first spring 103, this the first spring 103 one end is against the first valve seat 102 front end, the other end is against the first annular positive stop lug boss 108 rear end, the sidewall of the second valve pocket front portion is provided with the second ring-shaped step 209, second valve seat 202 front end is against on this second ring-shaped step 209, second valve rod 201 front end is located in the center hole of the second valve seat 202, the second valve rod 201 is enclosed within anterior outside second spring 203, this the second spring 203 one end is against the second valve seat 202 rear end, and the other end is against the second annular stop boss 208 front end.
This underground fast hydraulic joint is when docking, tool joint pin 1 is inserted female joint 2 rear portion, joint body 12 front portion of tubulose is stretched in the center hole of connecting sleeve 22 and seal cartridge 23, sealed by main seal ring 29 and the second seal ring 28 between the inwall of its outer wall and connecting sleeve 22 and seal cartridge 23, second sleeve pipe 204 stretches in this joint body 12 front portion, first sleeve pipe 104 and the outer wall of the second sleeve pipe 204 and the inwall of this joint body 12 are fitted, ensure sealing effect, pressure is pushed up mutually in first sleeve pipe 104 front end and the second sleeve pipe 204 rear end, first spring 103 and the second spring 203 are compressed, the part that first sleeve pipe 104 is provided with the first pod apertures 105 is retracted in the first valve pocket, the part that second sleeve pipe 204 is provided with the second pod apertures 205 is retracted in the second valve pocket, first valve pocket and the second valve pocket are by the first pod apertures 105, first sleeve pipe 104, second sleeve pipe 204 is communicated with the second pod apertures 205, realize the connection of tool joint pin 1 and female joint 2 fluid passage, after tool joint pin 1 is extracted in female joint 2, first spring 103 and the second spring 203 reset, described first pod apertures 105 and the second pod apertures 205 stretch out the first valve pocket and the second valve pocket respectively, first valve seal 106 is pressed on the conical surface at joint body 12 rear portion, second valve seal 206 is pressed on the conical seal (contact) face of seal cartridge 23 front end, tool joint pin 1 and female joint 2 are blocked respectively, block between tool joint pin 1 and female joint 2, the fast conducting between this tool joint pin 1 and female joint 2 can be realized and block.
Further as shown in Figure 1, this underground fast hydraulic joint is when being used alone, in the middle part of connecting sleeve 22 rear portion outer wall and joint body 12, outer wall is provided with a circle step, the step of connecting sleeve 22 rear portion outer wall has outside thread, be arranged with nut 3 in the middle part of joint body 12, this nut 3 rear end fold inward is also against on the step of joint body 12, and the anterior swivel nut of nut 3 is on the step at connecting sleeve rear portion, when tool joint pin 1 and female joint 2 are docked, locked by this nut 3.
The oil pipe connecting end of the first conversion adapter 11 and the second conversion adapter 21 is the externally threaded joint of band, this first conversion adapter 11 and the second conversion adapter 21 outer wall can install positioning ring and snap ring, when tool joint pin 1 or female joint 2 batch are arranged on fixed plate, for the location of tool joint pin 1 or female joint 2, joint body 12 front end is not stretched out in first sleeve pipe 104 front end, when being convenient to docking, second sleeve pipe 204 of female joint 2 stretches in tubular configured joint body 12 to dock to push up with the first sleeve pipe 104 presses, the anterior outer wall of joint body 12 can arrange a circle groove, groove can place steel ring for the connection between fastening and female joint 2.

Claims (9)

1. a underground fast hydraulic joint, comprise tool joint pin (1) and female joint (2), it is characterized in that: described tool joint pin (1) and female joint (2) offer fluid passage all vertically, the first fluid stopping spring spool is provided with in the fluid passage of described tool joint pin (1), the second fluid stopping spring spool is provided with in the fluid passage of described female joint (2), female joint (2) rear portion is stretched in described tool joint pin (1) front portion, first valve rod (101) of described first fluid stopping spring spool and second valve rod (201) of the second fluid stopping spring spool are just to setting, when tool joint pin (1) is docked with female joint (2), pressure is pushed up mutually in described first valve rod (101) front end and the second valve rod (201) rear end, tool joint pin (1) is communicated with the fluid passage of female joint (2),
The joint body (12) that described tool joint pin (1) comprises the first conversion adapter (11) and is connected with this first conversion adapter (11) front sealing, described first conversion adapter (11) and joint body (12) offer center hole all vertically, the center hole of described first conversion adapter (11) and joint body (12) communicates and forms the fluid passage of described tool joint pin (1), the first valve pocket of hollow is formed in the joint of described first conversion adapter (11) and joint body (12), this first valve pocket is communicated with the fluid passage of the first conversion adapter (11) with joint body (12), described first fluid stopping spring spool is arranged in this first valve pocket, the second conversion adapter (21) that described female joint (2) comprises connecting sleeve (22) and is connected with this connecting sleeve (22) front sealing, this second conversion adapter (21) and connecting sleeve (22) offer center hole all vertically, the center hole of this second conversion adapter (21) and connecting sleeve (22) communicates and forms the fluid passage of described female joint (2), the second valve pocket of hollow is formed in the joint of described second conversion adapter (21) and connecting sleeve (22), this second valve pocket is communicated with the fluid passage of the second conversion adapter (21) with connecting sleeve (22), described second fluid stopping spring spool is arranged in this second valve pocket, described joint body (12) front portion is stretched in the center hole at connecting sleeve (22) rear portion, the inwall in this joint body (12) anterior outer wall and connecting sleeve (22) posterior center hole is fitted, when tool joint pin (1) is docked with female joint (2), pressure is pushed up mutually in described first valve rod (101) front end and the second valve rod (201) rear end, second valve pocket is communicated with by center hole with the first valve pocket.
2. a kind of underground fast hydraulic joint according to claim 1, it is characterized in that: on the outer wall of described tool joint pin (1) and female joint (2), swivel nut has same nut (3), when described tool joint pin (1) and female joint (2) docking, locked by this nut (3).
3. a kind of underground fast hydraulic joint according to claim 1 and 2, it is characterized in that: described first fluid stopping spring spool comprises the first valve seat (102), first valve rod (101) and the first spring (103), described first valve seat (102) is arranged on the first valve pocket inwall, described first valve rod (101) is axially set in the first valve pocket along the first conversion adapter (11), this the first valve rod (101) front end is towards joint body (12), rear end is towards described first valve seat (102), this the first valve rod (101) front portion is first sleeve pipe (104) of hollow, described first sleeve pipe (104) sidewall offers the first pod apertures (105), this first sleeve pipe (104) stretches in the fluid passage of joint body (12), the first valve seal (106) is provided with between described first valve rod (101) and the fluid passage of joint body (12), this first valve seal (106) is positioned at the first pod apertures (105) rear, first valve rod (101) at this first valve seal (106) rear is provided with the first bounding means, described first spring (103) one end is connected to this first bounding means rear end, the other end is against the first valve seat (102) front end, first valve seal (106) is pressed in the first valve pocket front inner wall by described first bounding means, and limit the first valve rod (101) and travel forward.
4. a kind of underground fast hydraulic joint according to claim 3, it is characterized in that: described second fluid stopping spring spool comprises the second valve seat (202), second valve rod (201) and the second spring (203), described second valve seat (202) is arranged on the second valve pocket inwall, described second valve rod (201) is axially set in the second valve pocket along the second conversion adapter (11), this the second valve rod (201) rear end is towards connecting sleeve (22), front end is towards described second valve seat (202), this the second valve rod (201) rear portion is second sleeve pipe (204) of hollow, described second sleeve pipe (204) sidewall offers the second pod apertures (205), this second sleeve pipe (204) stretches in the fluid passage of connecting sleeve (22), the second valve seal (206) is provided with between described second valve rod (201) and the fluid passage of connecting sleeve (22), this second valve seal (206) is positioned at the second pod apertures (205) front, second valve rod (201) in this second valve seal (206) front is provided with the second bounding means, described second spring (203) one end is connected to this second bounding means front end, the other end is against the second valve seat (202) rear end, second valve seal (206) is pressed in the second valve pocket rear inside wall by described second bounding means, and limit the second valve rod (201) and move backward, when described tool joint pin (1) and female joint (2) docking, pressure is pushed up mutually in described first valve rod (101) front end and the second valve rod (201) rear end, described first spring (103) and the second spring (203) compression, the part that first sleeve pipe (104) is provided with the first pod apertures (105) is retracted in the first valve pocket, the part that second sleeve pipe (204) is provided with the second pod apertures (205) is retracted in the second valve pocket, described first valve pocket and the second valve pocket are by the first pod apertures (105), first sleeve pipe (104), second sleeve pipe (204) is communicated with the second pod apertures (205).
5. a kind of underground fast hydraulic joint according to claim 4, it is characterized in that: described connecting sleeve (22) anterior by thread jacket at described second conversion adapter (21) rear portion, the center bore inner wall that described connecting sleeve (22) is anterior is provided with seal cartridge (23), described seal cartridge (23) front end is connected with the second conversion adapter (21) rear end, sealing lining (23) rear end is against on the step of connecting sleeve (22) center bore inner wall setting, sealing lining (23) front end is the conical seal (contact) face of indent, pre-large post-small drum-shaped chamber is offered in described second conversion adapter (21) rearward end, sealing lining (23) and the second conversion adapter (21) surround middle part described second valve pocket small in ends greatly, main seal ring (29) is provided with between seal cartridge (23) rear end and connecting sleeve (22), this main seal ring (29) is arranged in seal cartridge (23) rear inside wall, sealing lining (23) is provided with static sealing ring (25) with the joint of the second conversion adapter (21), the first seal ring (24) is provided with between the inwall of sealing lining (23) outer wall and connecting sleeve (22), the second bump protection ring (26) is provided with between this second conversion adapter (21) rear end and inwall of connecting sleeve (22), the inwall of described connecting sleeve (22) offers circular groove, this circular groove is positioned at the rear of seal cartridge (23), and back-up ring (27) and the second seal ring (28) are installed in this circular groove, described joint body (12) front portion is tubulose, described first sleeve pipe (104) outer wall and the second sleeve pipe (204) rear end outer wall are all fitted with joint body (12) front inner wall, sealed by described main seal ring (29) and the second seal ring (28) between the inwall of this joint body (12) anterior outer wall and female joint (2) aft fluid passage.
6. a kind of underground fast hydraulic joint according to claim 5, it is characterized in that: described first bounding means comprises the first annular positive stop lug boss (108) being arranged on the first valve rod (101) middle part and the first valve gap (107) be enclosed within this first annular positive stop lug boss (108) outward, this the first valve gap (107) front inner wall is connected with the first annular positive stop lug boss (108) outer wall thread, described first spring (103) one end is connected to this first annular positive stop lug boss (108) rear end, the other end is connected to the first valve seat (102) front end, it is anterior that first valve gap (107) rear portion covers described first spring (103), described first valve seal (106) is arranged on the first valve gap (107) front end, when not docking, first spring (103) extends and the first valve seal (106) is pressed in the tapered slope of the first valve pocket front inner wall.
7. a kind of underground fast hydraulic joint according to claim 6, it is characterized in that: described second bounding means comprises the second annular stop boss (208) being arranged on the second valve rod (201) middle part and the second valve gap (207) be enclosed within this second annular stop boss (208) outward, this the second valve gap (207) rear inside wall is connected with the second annular stop boss (208) outer wall thread, described second spring (203) one end is connected to this second annular stop boss (208) front end, the other end is connected to the second valve seat (202) rear end, second valve gap (207) rear portion covers described second spring (203) rear portion, described second valve seal (206) is arranged on the second valve gap (207) rear end, when not docking, second spring (203) extends and the second valve seal (206) is pressed on the conical seal (contact) face of seal cartridge (23) front end.
8. a kind of underground fast hydraulic joint according to claim 7, it is characterized in that: in described first conversion adapter (11) front portion, offer pre-large post-small drum-shaped chamber, described joint body (12) rear portion by thread jacket outside described first conversion adapter (11) front portion, this joint body (12) and the first conversion adapter (11) surround little described first valve pocket in large front end and back end, middle part, the first bump protection ring (110) and the 3rd seal ring (111) is provided with between this first conversion adapter (11) front end and inwall of joint body (12), the diameter of described joint body (12) and the first conversion adapter (11) fluid passage is less than the diameter of described first valve pocket front end and back end, described first pod apertures (105) is arranged on the rear portion of the first sleeve pipe (104), described second pod apertures (205) is arranged on the front portion of the second sleeve pipe (204), described first pod apertures (105) and the second pod apertures (205) are 2-4, and be uniformly distributed along the first sleeve pipe (104) and the second sleeve pipe (204) circumference respectively.
9. a kind of underground fast hydraulic joint according to claim 8, it is characterized in that: described first valve seat (102) and the second valve seat (202) are disc-shape, this first valve seat (102) offers center hole, the first valve seat (102) around this center hole offers through hole, the sidewall at described first valve pocket rear portion is provided with the first ring-shaped step (109), this the first valve seat (102) rear end is against on this first ring-shaped step (109), first valve rod (101) rear end is located in the center hole of the first valve seat (102), the first valve rod (101) rear portion is enclosed within outside first spring (103), this the first spring (103) one end is against the first valve seat (102) front end, the other end is against the first annular positive stop lug boss (108) rear end, the sidewall of described second valve pocket front portion is provided with the second ring-shaped step (209), described second valve seat (202) front end is against on this second ring-shaped step (209), described second valve rod (201) front end is located in the center hole of the second valve seat (202), the second valve rod (201) is enclosed within anterior outside second spring (203), this the second spring (203) one end is against the second valve seat (202) rear end, and the other end is against the second annular stop boss (208) front end.
CN201310753003.8A 2013-12-31 2013-12-31 A kind of underground fast hydraulic joint Expired - Fee Related CN103672257B (en)

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CN104712868B (en) * 2015-01-16 2016-11-30 宝鸡石油机械有限责任公司 A kind of underwater multiplex hydraulic quick connecting device
CN106931260A (en) * 2017-03-31 2017-07-07 福建上润精密仪器有限公司 A kind of pressure piping snap joint
CN108098250B (en) * 2017-12-20 2019-06-21 重庆洛昂机械有限公司 Crane oil inlet pipe more changing device

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US6626207B1 (en) * 2002-03-08 2003-09-30 National Coupling Company, Inc. Undersea hydraulic coupling with interlocking poppet valve actuators
CN100483001C (en) * 2007-06-15 2009-04-29 邵金鹤 Fast connector
KR200448613Y1 (en) * 2009-11-19 2010-05-03 윤종희 Jointing apparatus of oil pressure line for heavy machinery
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Effective date of registration: 20180504

Address after: No. 69, Mount Huangshan Avenue, Yubei District, Chongqing, Chongqing

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Address before: 400044 No. 69 middle section of Mount Huangshan Avenue, North New District, Yubei District, Chongqing.

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