CN217815100U

CN217815100U - Plug valve with fit error adjusting function

Info

Publication number: CN217815100U
Application number: CN202222166265.1U
Authority: CN
Inventors: 李想; 王磊; 张天桐; 周恒仓; 张立杰
Original assignee: Mudanjiang Linhai Petroleum Fishing Tool Co ltd
Current assignee: Mudanjiang Linhai Petroleum Fishing Tool Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-11-15
Anticipated expiration: 2032-08-19

Abstract

The utility model provides a plug valve with cooperation error adjustment function, including the valve body, lower disk seat, go up the disk seat, the valve ball, the retaining ring, the plug revolves, wave circle spring and last wave circle spring down, further still include the cooperation adjusting block, set up wave circle spring and wave circle spring down respectively at last disk seat upper end and lower disk seat lower extreme, make the combination body that lower disk seat, valve ball and last disk seat constitute have along the axial up-down bidirectional adaptability elastic displacement volume, realize the cooperation error adjustment function between the spare part, further set up the cooperation adjusting block on the plug revolves with the valve ball connecting surface, make the valve ball and the plug revolve and have two degree of freedom's adaptability motion ability, strengthen the cooperation error adjustment function of plug valve, improve the cooperation adaptability of valve ball, reduce frictional resistance, turn intensity, improve production availability factor, reduce labor intensity of operation, on this basis, because the cooperation error adjustment function has reduced the assembly precision requirement, still be favorable to simplifying product structure, reduce the assembly degree of difficulty, practice thrift manufacturing cost.

Description

Plug valve with fit error adjusting function

Technical Field

The utility model relates to a plug valve, concretely relates to plug valve with fit error adjustment function.

Background

The plug valve is a manual control valve in an oilfield drill string circulating system, and can be used as an important internal blowout prevention tool to turn a plug to a 90-degree angle to close a valve port so as to achieve the purposes of intercepting and preventing blowout. Among the prior art the plug valve mainly includes main constitutional parts such as valve body, valve ball, lower disk seat, goes up disk seat, rotary plug, positioning disk and holding ring, wherein: the valve ball is embedded in the valve body in a limiting way by matching an upper valve seat and a lower valve seat, a fixed rotating shaft at one end of the valve ball is connected to the inner wall of the valve body, the other end of the valve ball is coaxially connected with a rotary bolt embedded in the valve body, the valve ball can be controlled to turn over by pulling the rotary bolt to close or open a valve port, the inner side of the valve body is matched with a positioning disc and a positioning ring in a structure, the rotating angle of a knob is limited within a range of 90 degrees, and a wave ring spring is sometimes installed between the lower valve seat and the valve body. In the process of processing and manufacturing the plug valve, certain processing errors exist in main components such as the valve ball, the lower valve seat, the upper valve seat and the like and other auxiliary components, matching errors of different degrees exist among the components after assembly, the errors can obviously increase the acting force among the valve ball, the lower valve seat and the upper valve seat, the friction force between the valve ball and the lower valve seat and between the valve ball and the upper valve seat is directly increased along the axial acting force, the operating resistance of the valve ball is increased by turning the plug, the valve ball is difficult to turn, and the labor intensity is overlarge. Therefore, the structure of the conventional plug valve needs to be optimized and improved, the stress state of the valve ball is improved, the turning resistance of the valve ball is reduced, the use efficiency of the plug valve is improved, and the production labor intensity is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a plug valve with fit error adjustment function optimizes traditional plug valve structure, improves valve ball stress state, reduces the valve ball and pulls the resistance.

A plug valve with a fitting error adjusting function comprises: the valve body is a cylindrical barrel, connecting threads are respectively arranged at the upper end and the lower end of the valve body and used for being connected with a drill rod of an oil field drilling tool, the valve ball is in a spherical shape provided with an axial through hole, a key pin structure is arranged on the outer spherical surface in the axial direction vertical to the axial through hole, the lower valve seat and the upper valve seat are in a cylindrical shape, the peripheral diameters of the lower valve seat and the upper valve seat correspond to the inner cavity aperture of the valve body respectively, arc-shaped spherical surfaces correspondingly matched with the outer spherical surfaces of the valve ball are arranged in local areas on the upper end surface of the lower valve seat and the lower end surface of the upper valve seat respectively, the valve ball is matched and limited by the lower valve seat and the upper valve seat, is arranged between the lower valve seat and the upper valve seat and can rotate relative to the lower valve seat and the upper valve seat, the outer circumference of the valve ball is kept in sealing fit with the arc-shaped spherical surfaces on the lower valve seat and the upper valve seat respectively, a combined body formed by the sequential matching of the lower valve seat, the valve ball and the upper valve seat is limited and embedded in the inner cavity of the valve body, wherein the lower valve seat and the upper valve seat are respectively in sealing fit with the valve body, a lower limiting ring surface at the lower end of the lower valve seat and an upper limiting ring surface at the upper end of the upper valve seat are respectively provided with the lower wave ring spring and the upper wave ring spring, so that the combined body formed by the lower valve seat, the valve ball and the upper valve seat has vertical bidirectional adaptive elastic displacement along the axial direction relative to a limiting space, the combined body corresponds to the arrangement position of the valve ball, an embedded hole penetrating through the side wall in the radial direction is formed on the valve body, an annular limiting shoulder is arranged in the embedded hole and is limited by the limiting shoulder, the rotary bolt is inserted in the inserting hole in a sealing matching mode, a key pin structure correspondingly matched with the upper structure of the valve ball is arranged at the inner side end of the rotary bolt and is connected in a matching mode, the rotary bolt can transmit torque to the valve ball when being pulled, an arc-shaped limiting groove is formed in the circumferential edge of the inner side of the rotary bolt and corresponds to the arc-shaped limiting groove, the valve body is embedded with a baffle ring which is matched and limited with the arc-shaped limiting groove, the rotatable angle of the rotary bolt and the valve ball relative to the valve body is limited, a pulling structure is arranged at the outer side end of the rotary bolt, and pulling power can be applied to the rotary bolt from the outside through the pulling structure.

The utility model provides a plug valve with cooperation error adjustment function, preferred revolve the bolt with utilize cooperation adjusting block transitional coupling between the valve ball, the whole disc shape that is of cooperation adjusting block, seted up mutually perpendicular and have the sectional sharp recess of rectangle in the quotation of both sides respectively, with sharp recess is corresponding the valve ball with it has the sectional sharp convex key of rectangle to revolve to be provided with respectively on tying, utilizes sharp convex key with the cooperation that corresponds of sharp recess couples respectively in the both sides quotation of cooperation adjusting block, through the valve ball with it is relative to revolve to tie and be provided with respectively in the mutually perpendicular direction the rectilinear movement degree of freedom of cooperation adjusting block makes the valve ball with revolve the adaptability motion that has two degrees of freedom between tying, further strengthen the whole cooperation error adjustment function of plug valve.

The utility model provides a plug valve with cooperation error adjustment function, based on the cooperation error adjustment function that it had, preferred to inlay and put in the middle of the inner chamber of valve body lower disk seat valve ball with go up the spacing of disk seat assembly, upper portion adopt with valve body threaded connection's stop collar with the up end cooperation of going up the disk seat is spacing, and the lower part utilizes to set up annular circular bead on the valve body internal ring face is right the lower terminal surface of disk seat supports spacingly down, simplifies product design structure, reduces spare part processing and the assembly equipment degree of difficulty, reduces production intensity of labour.

The utility model provides a plug valve with axial fit error adjustment function, further, it is preferably provided with the ring that rises in the upper end installation of stop collar, the ring that rises supports and props up the up end of stop collar, increase the support intensity of stop collar provides the safety guarantee for plug valve work.

The beneficial effects of the utility model are that, a configuration optimization's plug valve is provided, lower extreme through last disk seat upper end and lower disk seat sets up ripples circle spring and ripples circle spring down respectively simultaneously, make disk seat down, the assembly that valve ball and last disk seat constitute has the up-down two-way adaptability elastic displacement volume along the axis, realize the cooperation error adjustment function between the spare part, and simultaneously, still through setting up the cooperation adjusting block on the hookup face of bolt and valve ball soon, make the adaptability that has two degrees of freedom between valve ball and the bolt soon, further strengthen the cooperation error adjustment function of plug valve, thereby effectively improve the cooperation adaptability between valve ball and last disk seat and the disk seat down, reduce the rotary motion resistance between valve ball and last disk seat and the disk seat down, reduce the intensity of turning of valve ball, improve the production availability factor, reduce the work intensity, on this basis, because the cooperation error adjustment function of plug valve can moderate degree reduce the positioning accuracy requirement to valve ball, go up disk seat and disk seat down, consequently still do benefit to product design structure, reduce the assembly degree of difficulty, practice thrift the manufacturing cost.

Drawings

Fig. 1 is a structural view of a cock valve conduction state having a fitting error adjusting function.

Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is a structural view of a closed state of a plug valve with a fit error adjusting function.

Detailed Description

The technical solution claimed in the present invention is further described below with reference to the following specific embodiments and accompanying drawings.

The utility model provides a plug valve with cooperation error adjustment function, as shown in figure 1 and figure 3, by valve body 1, lower disk seat 2, go up disk seat 3, valve ball 4, fender ring 5, spiral bolt 6, stop collar 7, wave circle spring 8 down, go up wave circle spring 9 and cooperation adjusting block 10 and constitute, connecting thread has been seted up respectively at both ends about valve body 1, axial through-hole has been seted up to valve ball 4, is provided with the section on the outside sphere and is the straight line convex key of rectangle, down disk seat 2 with go up disk seat 3's periphery diameter respectively with the inner chamber aperture of valve body 1 is corresponding and constitute sealed cooperation disk seat 2 up end down with go up disk seat 3 down be provided with respectively with correspond complex arc sphere with valve ball 4 outside sphere, valve ball 4 cooperation sets up down disk seat 2 with go up between the disk seat 3, respectively with lower disk seat 2 with go up disk seat 3 keeps sealed cooperation, and with lower disk seat 2 with go up disk seat 3 constitutes to inlay and set up in the inner chamber of valve body 1, in the middle of valve body 1 the inner chamber of valve body 1, go up disk seat 3 the fixed ring of valve body is inlayed by the radial fixed ring of valve body 7 and the limit collar 7, the limit collar is connected the valve seat 11, the radial fixed ring is connected with the lower extreme of valve body is set up the valve seat 3, the ring is connected with the lower limit collar on the valve seat 4, the valve body 1 is embedded with a baffle ring 5 which is matched and limited with the arc-shaped baffle groove, as shown in figure 2, the baffle ring 5 is a 4-section splicing ring, is combined and embedded in an embedding groove formed in the valve body 1, and is combined and fixed by a clamp spring 12.

In practical production application, the plug valve with the matching error adjusting function is connected and installed on a wellhead drill rod, in a normal production state, as shown in fig. 1, the plug valve is in a conducting state, when an underground condition needs to block a liquid flow channel to prevent well liquid from upwelling, a rotary bolt 6 is pulled by means of an external tool to drive a valve ball 4 to rotate by 90 degrees, as shown in fig. 3, the plug valve is changed to a closing state, the liquid flow channel is closed, and the purposes of intercepting and preventing blowout are achieved. In general, during the pulling operation of the plug 6, the pulling resistance mainly results from the frictional resistance between the valve ball 4 and the upper valve seat 3 and the lower valve seat 2 under the action of the downhole well fluid pressure, but since the valve body 1, the valve ball 4, the lower valve seat 3, the upper valve seat 2, and the plug 6 mainly constitute the components and other auxiliary components, there are machining errors and matching errors between them after assembly, which will obviously increase the friction coefficient between the valve ball 4 and the upper valve seat 3 and the lower valve seat 2 and between the plug 6 and the valve body 1 if the matching adjustment between them is not possible, and further increase the pulling resistance of the plug 6, the plug valve with matching error adjustment function of this embodiment, because the lower wave ring spring 8 and the upper wave ring spring 9 are simultaneously provided, and the plug 6 and the valve ball 4 are transitionally coupled by the matching adjustment block 10, so that the coaxial adjustment between the plug 6 and the valve ball 4 due to the mechanical error can achieve the "two-stage" matching "adjustment, in which: firstly, make lower disk seat 2 valve ball 4 with the assembly that last disk seat 3 constitutes is relative valve body 1 has along axial upper and lower two-way adaptability elastic displacement volume, realizes valve ball 4 is relative revolve bolt 6 one-level adaptation adjustment in the axial, secondly makes valve ball 4 with it is relative to revolve bolt 6 respectively have the motion degree of freedom of cooperation adjusting block 10 on the mutually perpendicular direction, realizes valve ball 4 is in it is relative to revolve the two-dimensional footpath of bolt 6 revolve the second grade adaptation adjustment of bolt 6.

Claims

1. A plug valve having a fitting error adjustment function, comprising: valve body (1), lower disk seat (2), go up disk seat (3), valve ball (4), keep off ring (5), spiral bolt (6) and lower ripples circle spring (8), its characterized in that still includes: an upper wave coil spring (9);

the valve body (1) is a cylindrical barrel, the upper end and the lower end of the valve body are respectively provided with a connecting thread, the valve ball (4) is in a spherical shape provided with an axial through hole, a key pin structure is arranged on the outer spherical surface in the axial direction vertical to the axial through hole, the lower valve seat (2) and the upper valve seat (3) are both in a cylindrical shape, the peripheral diameter of the valve ball corresponds to the inner cavity aperture of the valve body (1), the upper end surface of the lower valve seat (2) and the lower end surface of the upper valve seat (3) are respectively provided with an arc-shaped spherical surface correspondingly matched with the outer spherical surface of the valve ball (4), the valve ball (4) is matched and limited by the lower valve seat (2) and the upper valve seat (3) and is arranged between the lower valve seat (2) and the upper valve seat (3), can be relative lower disk seat (2) with go up disk seat (3) and rotate, and respectively with lower disk seat (2) with go up on disk seat (3) the arc sphere keeps sealed cooperation, lower disk seat (2) valve ball (4) with go up disk seat (3) and cooperate the assembly that constitutes spacing inlay in the middle of the inner chamber of valve body (1) in proper order, wherein, lower disk seat (2) with go up disk seat (3) respectively with valve body (1) forms sealed cooperation lower limit ring face of lower disk seat (2) lower extreme, be provided with respectively on the last limit ring face of last disk seat (3) upper end lower ripples circle spring (8) with last ripples circle spring (3) (9) The valve body (1) is provided with an embedding hole which is radially communicated with a side wall, an annular limiting shoulder is arranged in the embedding hole and limited by the limiting shoulder, the rotary bolt (6) is embedded in the embedding hole in a sealing fit manner, the inner side end of the rotary bolt is provided with a key pin structure which is correspondingly matched with the upper structure of the valve ball (4) and is matched with the upper structure of the valve ball in a matched manner, an arc-shaped limiting groove is formed in the inner side circumferential edge of the rotary bolt (6) and corresponds to the arc-shaped limiting groove, and the valve body (1) is embedded with a retaining ring (5) which is matched and limited by the arc-shaped limiting groove.

2. A plug valve with fitting error adjusting function according to claim 1, characterized in that: the valve ball is characterized in that the rotary bolt (6) is in transitional connection with the valve ball (4) through a matching adjusting block (10), the matching adjusting block (10) is integrally in a disc shape, linear grooves which are perpendicular to each other and have rectangular sections are formed in disc surfaces of two sides respectively, the linear grooves correspond to the linear grooves, linear convex keys with rectangular sections are arranged on the valve ball (4) and the rotary bolt (6) respectively, and the linear convex keys and the linear grooves are correspondingly matched and connected to the disc surfaces of the two sides of the matching adjusting block (10) respectively.

3. A plug valve with fitting error adjusting function according to claim 1 or 2, wherein: the lower valve seat (2) and the valve ball (4) are limited by the upper valve seat (3) assembly, the upper portion of the lower valve seat (2) is matched with the upper end face of the upper valve seat (3) through a limiting sleeve (7) which is connected with the valve body (1) in a threaded mode, and the lower portion of the lower valve seat (2) is supported and limited through an annular shoulder which is arranged on the inner annular face of the valve body (1).

4. A plug valve with a fitting error adjustment function according to claim 3, characterized in that: an expansion ring (11) is arranged at the upper end of the limiting sleeve (7), and the expansion ring (11) abuts against the upper end face of the limiting sleeve (7).