CN204327013U

CN204327013U - The bypass valve of unidirectional bypass

Info

Publication number: CN204327013U
Application number: CN201420706755.9U
Authority: CN
Inventors: 卞康群
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-13
Filing date: 2014-11-13
Publication date: 2015-05-13
Anticipated expiration: 2024-11-13

Abstract

A bypass valve for unidirectional bypass, it comprises bypass valve and one way valve; Bypass valve is primarily of valve body, spool, big spring, valve port and jump ring and ring washer composition; One way valve comprises body, valve rod, little spring, nut; One way valve cooperatively interacts with bypass valve and is connected, the body outer tube wall of one way valve is provided with connection external screw thread, the inwall of the valve port of bypass valve is provided with connection internal thread, by connecting internal thread and being connected external screw thread one way valve is arranged on the valve port of bypass valve, thus, make one way valve be arranged in the valve port of the bypass valve of helicoid hydraulic motor, the collar extension of the collar extension of its one way valve and the valve port of bypass valve directly interlinks, and the internal orifice of the internal orifice of one way valve and the valve port of bypass valve directly interlinks; Like this, the valve port of the bypass valve of unidirectional bypass not only achieves unidirectional bypass, overcomes the two-way straight-through defect of valve port of bypass valve, and its structure is simple, stable, reasonable.

Description

The bypass valve of unidirectional bypass

Technical field

The utility model relates to the instrument of a kind of oil and gas exploration and exploitation, particularly a kind of mud medium deep-well, bypass valve of unidirectional bypass of using in ultradeep well probing being suitable for gas base flow body drilling technology and high temperature strong vibration.

Background technology

Helicoid hydraulic motor, mainly comprises bypass valve, motor assembly, universal drive shaft assembly and driving-shaft assembly, and its bypass valve, motor assembly, universal drive shaft assembly are connected from top to bottom successively with driving-shaft assembly; Bypass valve is one of vitals of composition helicoid hydraulic motor, the bypass valve of helicoid hydraulic motor rising, lower brill time be in out position, drilling fluid in drill string is communicated with down-hole annular.At present, the bypass valve of general helicoid hydraulic motor, primarily of valve body, spool, spring, valve port and jump ring and ring washer composition, body cavity is provided with cylindrical channel with the level, cylindrical channel is connected with valve port, and spool is matched with cylindrical channel with the level by spring, and the lower end of spool is provided with spool bore, when spool bore is communicated with the valve port on valve body, bypass valve is in out position.Its bypass valve valve port has a filter screen, and be two-way straight-through, so at lower brill, creep into, make up a joint, during termination of pumping, the impurity such as the silt particle often in down-hole annular, screw thread film can enter in drilling tool water hole by the filter screen of the valve port of screw rod bypass valve, cause screw deadlocking, screw rod damages in advance, bit port blocks, directional well instrumentation card in drilling tool water hole waits indefinitely accident, brings huge economic loss.

Utility model content

The purpose of this utility model is to provide a kind of bypass valve of unidirectional bypass; The valve port of the bypass valve of its unidirectional bypass achieves unidirectional bypass, overcome the two-way straight-through defect of valve port of general bypass valve, so at lower brill, creep into, make up a joint, during termination of pumping, the impurity such as the silt particle in down-hole annular, screw thread film do not enter in drilling tool water hole by the valve port of the bypass valve of unidirectional bypass; Avoid and cause screw deadlocking, screw rod damages in advance, bit port blocks, directional well instrumentation card in drilling tool water hole waits indefinitely accident; And its structure is simple, stable, reasonable.

For realizing the purpose of this utility model, the utility model by the following technical solutions: the bypass valve of unidirectional bypass, comprises bypass valve and one way valve.Bypass valve is primarily of valve body, spool, big spring, valve port and jump ring and ring washer composition; Described body cavity is provided with cylindrical channel with the level, and the step on its cylindrical channel is provided with two, and two steps are respectively the step of upper end and the step of lower end, and cylindrical channel is connected with valve port; The upper end of spool is provided with an outer step, and the lower end of spool is provided with a spool bore; Spool by big spring and cylindrical channel with the level in mating connection, like this, its spool is in the cylindrical channel of valve body, and its big spring is placed on spool, the spool of big spring between the outer step of spool and the step of the lower end of the cylindrical channel of valve body and valve body coordinate in the axial annular space that formed; The outside of the step of the upper end of the cylindrical channel of valve body is provided with jump-ring slot, ring washer is placed in spool outer end and on the step of the upper end of the cylindrical channel of valve body, jump ring is in jump-ring slot, and jump ring is pressed against on ring washer, thus fixing ring washer, its spool is below ring washer; The upper end of valve body is provided with internal thread, and the lower end of valve body is provided with external screw thread.When bypass valve is installed, first big spring is put in valve body, again spool is installed, namely spool is arranged in the cylindrical channel of valve body, and make big spring be placed on spool, ring washer is placed on the step of the upper end of its cylindrical channel of spool outer end, finally jump ring is arranged in jump-ring slot, make jump ring be pressed against on ring washer, ring washer is fixed.When using bypass valve, its spool bore is communicated with the valve port on valve body, and bypass valve is just in out position.One way valve comprises body, valve rod, little spring, nut, and wherein, body outer tube wall is provided with connection external screw thread, and described body is provided with the cavity of hollow, and described body is provided with interior shoulder in the middle part of inwall; Described valve rod is T-type structure, and described valve rod comprises sealed end and the body of rod, and the external diameter of described sealed end is less than the internal diameter of cavity and is greater than the internal diameter of interior shoulder, and the external diameter of the described body of rod is less than the internal diameter of interior shoulder, and the described body of rod is through interior shoulder.The described body of rod is provided with away from one end of sealed end the screw thread matched with described nut, and the body of rod to be cooperatively interacted with nut by screw thread away from one end of sealed end and is connected, and the external diameter of described nut is greater than the internal diameter of interior shoulder and is less than the internal diameter of cavity; Described little spring is sleeved on the body of rod between interior shoulder and nut.The described body of rod is provided with the righting board being evenly equipped with through hole between interior shoulder and little spring, and righting board is sleeved on the body of rod, and described righting board, both by drilling fluid, also can limit the radial scope of activities of valve rod.Described interior shoulder offers seal groove on the table top of sealed end, is provided with sealing ring in described seal groove.Hexagonal structure in one end tool of described body, the Single port of the interior hexagonal structure of described body is the collar extension of body, and the another port of body is the internal orifice of body, and the collar extension of body is referred to as the collar extension of one way valve, and the internal orifice of body is referred to as the internal orifice of one way valve; The collar extension of its sealed end, body is positioned at the side of the shoulder in the middle part of the inwall of body, and the internal orifice of nut, little spring and righting board, body is positioned at the opposite side of the shoulder in the middle part of the inwall of body; First sealing ring is arranged in seal groove during installation, then valve rod is placed in body cavity by sealing ring side, from the opposite side of body cavity, righting board, little spring, nut are installed successively.The inwall of the valve port of bypass valve is provided with connection internal thread, one way valve cooperatively interacts with bypass valve and is connected, one way valve is made to be arranged in the valve port of the bypass valve of helicoid hydraulic motor, the collar extension of the collar extension of its one way valve and the valve port of bypass valve directly interlinks, the internal orifice of the internal orifice of one way valve and the valve port of bypass valve directly interlinks, connection internal thread on the inwall of the connection external screw thread of the body outer tube wall of its one way valve and the valve port of bypass valve screws connection, one way valve is tightened by hexagonal structure in one end of body with instrument, thus make one way valve be fixed in the valve port of bypass valve, like this, by connecting internal thread and being connected external screw thread one way valve is arranged on the valve port of bypass valve.Like this, the bypass valve of unidirectional bypass is arranged on helicoid hydraulic motor, namely the bypass valve of unidirectional bypass cooperatively interacts with motor assembly and is connected, and the external screw thread of the lower end of the valve body of the bypass valve of its unidirectional bypass screws with the internal thread of the upper end of the housing of motor assembly and is connected.Helicoid hydraulic motor rise, lower brill or pump pressure low time, pump pressure is not enough to elastic force and the stiction of the big spring overcome on bypass valve, spool is failure to actuate, spool bore on spool is communicated with the valve port on valve body, due to the pressure effect of the drilling fluid in drilling tool water hole, outwards promote valve rod, make one way valve be in out position, drilling fluid in helicoid hydraulic motor can flow in down-hole annular, ensures normal construction, when pump pressure improves, the power of pump function on spool is greater than elastic force and the stiction of the big spring on bypass valve, spool action, move downward, hole on spool and the valve port on valve body are in closed state, bypass valve is in off-position, drilling fluid in helicoid hydraulic motor is not communicated with mutually with down-hole annular, drilling fluid in helicoid hydraulic motor enters screw drilling tool motor, drive helicoid hydraulic motor works, simultaneously, due to the pressure effect of the liquid in down-hole annular, the valve rod of inside promotion one way valve, one way valve is in off-position, silt particle in effective prevention down-hole annular, the impurity such as screw thread film enter in drilling tool water hole by the valve port of bypass valve, decrease, screw rod drill bit number of times changed by lower brill, save drilling time, the Stability Analysis of Structures of the bypass valve of unidirectional bypass, operating efficiency is high.Like this, the valve port of the bypass valve of its unidirectional bypass achieves unidirectional bypass, thus reaches the purpose of this utility model.

Owing to have employed technique scheme, the valve port of the bypass valve of unidirectional bypass not only achieves unidirectional bypass, overcome the two-way straight-through defect of valve port of general bypass valve, at lower brill, creep into, make up a joint, during termination of pumping, the impurity such as the silt particle in down-hole annular, screw thread film do not enter in drilling tool water hole by the valve port of the bypass valve of unidirectional bypass; Avoid and cause screw deadlocking, screw rod damages in advance, bit port blocks, directional well instrumentation card in drilling tool water hole waits indefinitely accident.And its structure is simple, stable, reasonable.

Accompanying drawing explanation

Fig. 1 is the structural representation of the bypass valve embodiment of the unidirectional bypass of the utility model.

Fig. 2 is the structural representation of the one way valve of the bypass valve embodiment of the unidirectional bypass of the utility model.

In figure: through hole 17, ring washer 18, jump ring 1, on valve body 2, spool 3, big spring 4, valve port 5, spool bore 6, internal thread 7, external screw thread 8, one way valve 9, body 10, sealing ring 11 sealed end 12, righting board 13, little spring 14, nut 15, the body of rod 16, righting board.

Detailed description of the invention

In figure: the bypass valve of unidirectional bypass, comprise bypass valve and one way valve 8.Bypass valve forms primarily of valve body 1, spool 2, big spring 3, valve port 4 and jump ring 18 and ring washer 17; Described body cavity is provided with cylindrical channel with the level, and the step on its cylindrical channel is provided with two, and two steps are respectively the step of upper end and the step of lower end, and cylindrical channel is connected with valve port; The upper end of spool is provided with an outer step, and the lower end of spool is provided with a spool bore 5; Spool by big spring and cylindrical channel with the level in mating connection, like this, its spool is in the cylindrical channel of valve body, and its big spring 3 is placed on spool, the spool of big spring 3 between the outer step of spool and the step of the lower end of the cylindrical channel of valve body and valve body coordinate in the axial annular space that formed; The outside of the step of the upper end of the cylindrical channel of valve body is provided with jump-ring slot, ring washer is placed in spool outer end and on the step of the upper end of the cylindrical channel of valve body, jump ring is in jump-ring slot, and jump ring is pressed against on ring washer, thus fixing ring washer, its spool is below ring washer; The upper end of valve body is provided with internal thread 6, and the lower end of valve body is provided with external screw thread 7.When bypass valve is installed, first big spring is put in valve body, again spool is installed, namely spool is arranged in the cylindrical channel of valve body, and make big spring be placed on spool, ring washer is placed on the step of the upper end of its cylindrical channel of spool outer end, finally jump ring is arranged in jump-ring slot, make jump ring be pressed against on ring washer, ring washer is fixed.When using bypass valve, its spool bore is communicated with the valve port on valve body, and bypass valve is just in out position.One way valve comprises body 9, valve rod, little spring 13, nut 14, and wherein, body outer tube wall is provided with connection external screw thread, and described body is provided with the cavity of hollow, and described body is provided with interior shoulder in the middle part of inwall; Described valve rod is T-type structure, and described valve rod comprises sealed end 11 and the body of rod 15, and the external diameter of described sealed end is less than the internal diameter of cavity and is greater than the internal diameter of interior shoulder, and the external diameter of the described body of rod is less than the internal diameter of interior shoulder, and the described body of rod is through interior shoulder.The described body of rod is provided with away from one end of sealed end the screw thread matched with described nut, and the body of rod to be cooperatively interacted with nut by screw thread away from one end of sealed end and is connected, and the external diameter of described nut is greater than the internal diameter of interior shoulder and is less than the internal diameter of cavity; Described little spring is sleeved on the body of rod between interior shoulder and nut.The described body of rod is provided with the righting board 12 being evenly equipped with through hole 16 between interior shoulder and little spring, and righting board is sleeved on the body of rod.Described interior shoulder offers seal groove on the table top of sealed end, is provided with sealing ring 10 in described seal groove.Hexagonal structure in one end tool of described body, the Single port of the interior hexagonal structure of described body is the collar extension of body, and the another port of body is the internal orifice of body, and the collar extension of body is referred to as the collar extension of one way valve, and the internal orifice of body is referred to as the internal orifice of one way valve; The collar extension of its sealed end, body is positioned at the side of the shoulder in the middle part of the inwall of body, and the internal orifice of nut, little spring and righting board, body is positioned at the opposite side of the shoulder in the middle part of the inwall of body; First sealing ring is arranged in seal groove during installation, then valve rod is placed in body cavity by sealing ring side, from the opposite side of body cavity, righting board, little spring, nut are installed successively.The inwall of the valve port of bypass valve is provided with connection internal thread, one way valve cooperatively interacts with bypass valve and is connected, one way valve is made to be arranged in the valve port of the bypass valve of helicoid hydraulic motor, the collar extension of the collar extension of its one way valve and the valve port of bypass valve directly interlinks, the internal orifice of the internal orifice of one way valve and the valve port of bypass valve directly interlinks, connection internal thread on the inwall of the connection external screw thread of the body outer tube wall of its one way valve and the valve port of bypass valve screws connection, one way valve is tightened by hexagonal structure in one end of body with instrument, thus make one way valve be fixed in the valve port of bypass valve, like this, by connecting internal thread and being connected external screw thread one way valve is arranged on the valve port of bypass valve.

Claims

1. a bypass valve for unidirectional bypass, comprises bypass valve and one way valve; Bypass valve is primarily of valve body, spool, big spring, valve port and jump ring and ring washer composition; Described body cavity is provided with cylindrical channel with the level, and the step on its cylindrical channel is provided with two, and two steps are respectively the step of upper end and the step of lower end, and cylindrical channel is connected with valve port; The upper end of spool is provided with an outer step, and the lower end of spool is provided with a spool bore; Spool by big spring and cylindrical channel with the level in mating connection, like this, its spool is in the cylindrical channel of valve body, and its big spring is placed on spool, the spool of big spring between the outer step of spool and the step of the lower end of the cylindrical channel of valve body and valve body coordinate in the axial annular space that formed; The outside of the step of the upper end of the cylindrical channel of valve body is provided with jump-ring slot, ring washer is placed in spool outer end and on the step of the upper end of the cylindrical channel of valve body, jump ring is in jump-ring slot, and jump ring is pressed against on ring washer, thus fixing ring washer, its spool is below ring washer; The upper end of valve body is provided with internal thread, and the lower end of valve body is provided with external screw thread; When bypass valve is installed, first big spring is put in valve body, again spool is installed, namely spool is arranged in the cylindrical channel of valve body, and make big spring be placed on spool, ring washer is placed on the step of the upper end of its cylindrical channel of spool outer end, finally jump ring is arranged in jump-ring slot, make jump ring be pressed against on ring washer, ring washer is fixed; When using bypass valve, its spool bore is communicated with the valve port on valve body, and bypass valve is just in out position; It is characterized in that: one way valve comprises body, valve rod, little spring, nut, described body is provided with the cavity of hollow, and described body is provided with interior shoulder in the middle part of inwall; Described valve rod is T-type structure, and described valve rod comprises sealed end and the body of rod, and the external diameter of described sealed end is less than the internal diameter of cavity and is greater than the internal diameter of interior shoulder, and the external diameter of the described body of rod is less than the internal diameter of interior shoulder, and the described body of rod is through interior shoulder; The described body of rod is provided with away from one end of sealed end the screw thread matched with described nut, and the body of rod to be cooperatively interacted with nut by screw thread away from one end of sealed end and is connected, and the external diameter of described nut is greater than the internal diameter of interior shoulder and is less than the internal diameter of cavity; Described little spring is sleeved on the body of rod between interior shoulder and nut; The described body of rod is provided with the righting board being evenly equipped with through hole between interior shoulder and little spring, and righting board is sleeved on the body of rod; Described interior shoulder offers seal groove on the table top of sealed end, is provided with sealing ring in described seal groove; Hexagonal structure in one end tool of described body, the Single port of the interior hexagonal structure of described body is the collar extension of body, and the another port of body is the internal orifice of body, and the collar extension of body is referred to as the collar extension of one way valve, and the internal orifice of body is referred to as the internal orifice of one way valve; The collar extension of its sealed end, body is positioned at the side of the shoulder in the middle part of the inwall of body, and the internal orifice of nut, little spring and righting board, body is positioned at the opposite side of the shoulder in the middle part of the inwall of body; First sealing ring is arranged in seal groove during installation, then valve rod is placed in body cavity by sealing ring side, from the opposite side of body cavity, righting board, little spring, nut are installed successively; One way valve cooperatively interacts with bypass valve and is connected, and make one way valve be arranged in the valve port of the bypass valve of helicoid hydraulic motor, the collar extension of the collar extension of its one way valve and the valve port of bypass valve directly interlinks, and the internal orifice of the internal orifice of one way valve and the valve port of bypass valve directly interlinks.

2. the bypass valve of unidirectional bypass according to claim 1, it is characterized in that: the body outer tube wall of one way valve is provided with connection external screw thread, the inwall of the valve port of bypass valve is provided with connection internal thread, connection internal thread on the inwall of the connection external screw thread of the body outer tube wall of its one way valve and the valve port of bypass valve screws connection, tighten one way valve with instrument by hexagonal structure in one end of body thus make one way valve be fixed in the valve port of bypass valve, like this, by connecting internal thread and being connected external screw thread one way valve is arranged on the valve port of bypass valve.