CN115288635A - Opening-closing type opening control pressure relief valve for high-pressure oil and gas well - Google Patents
Opening-closing type opening control pressure relief valve for high-pressure oil and gas well Download PDFInfo
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- CN115288635A CN115288635A CN202210800869.9A CN202210800869A CN115288635A CN 115288635 A CN115288635 A CN 115288635A CN 202210800869 A CN202210800869 A CN 202210800869A CN 115288635 A CN115288635 A CN 115288635A
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- 238000007789 sealing Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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Abstract
The invention discloses an open-close type opening control pressure relief valve for a high-pressure oil and gas well. The relief valve includes: the rear end nut is provided with a hollow cylinder structure, the hollow cylinder structure is provided with two parts with different inner diameters and outer diameters, namely a first thick end and a first thin end, the inner diameter and the outer diameter of the first thick end are larger than those of the first thin end, the end part of the first thick end is provided with a first flange, and the outer side wall of the first thin end is provided with rear end nut threads; the fixed rear end sleeve is provided with three hollow cylinder structures with different outer diameters, and is marked as a front section, a middle section and a rear section, and the outer diameter of the middle section is larger than that of the front section and the rear section; wherein, except that the inner wall of the end part of the rear section is provided with a first thread matched with the thread of the rear end nut. The invention has the characteristic of directly obtaining the opening data of the valve according to the operation of the valve.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas exploitation pipeline tools, in particular to an open-close type opening control pressure release valve for a high-pressure oil and gas well.
Background
At the field site, pressure relief valves are installed to control the pressure in the production line. A pressure relief valve is a type of pipeline protection device that is typically installed on a closed pipeline and is operated to open and close according to the operating pressure of the pipeline. When the pressure in the pipeline exceeds the set pressure of the pressure relief valve, the pressure relief valve is opened to relieve the pressure, and the pressure of fluid in the pipeline is ensured to be below the set pressure so as to protect the pipeline and prevent accidents.
However, when the existing pressure relief valve is used for pressure relief, the problems that difficulty in obtaining the opening data of the pressure relief valve is high and difficulty in quantitatively calculating the pressure relief speed is high are generally encountered, so that the design of the pressure relief valve structure which can be applied to pressure relief operation of a high-pressure wellhead and can directly obtain the opening data of the valve according to the operation of the valve is necessary.
Disclosure of Invention
The invention aims to provide a pressure relief valve structure which can be applied to pressure relief operation of a high-pressure wellhead and can directly obtain opening data of a valve according to operation of the valve.
In order to achieve the above object, the present invention provides an opening and closing type opening control pressure relief valve for a high pressure oil and gas well, comprising: the rear end nut is provided with a hollow cylinder structure, the hollow cylinder structure is provided with two parts with different inner diameters and outer diameters, namely a thick end I and a thin end I, the inner diameter and the outer diameter of the thick end I are larger than those of the thin end I, the end part of the thick end I is provided with a flange I, and the outer side wall of the thin end I is provided with rear end nut threads; the fixed rear end sleeve is provided with three hollow cylinder structures with different outer diameters, and is marked as a front section, a middle section and a rear section, and the outer diameter of the middle section is larger than that of the front section and the rear section; the inner walls of the front section, the middle section and the rear section are all in a regular hexagon in section along the radial direction except that the inner wall of the end part of the rear section is provided with a first thread matched with the thread of the rear end nut; the rear section is connected with the rear end nut through threads; a first limiting groove is uniformly arranged on the outer side wall of the end part of the front section in the circumferential direction; the first limiting blocks are uniformly arranged on the outer wall of the middle section in the circumferential direction; the fixed threaded column is provided with a hollow column body structure and is sleeved and fixed on the fixed rear end sleeve; a second limiting block matched with the first limiting groove is arranged at the position, corresponding to the first limiting groove, of the fixed rear-end sleeve on the fixed threaded column, and the second limiting block is inserted into the first limiting groove; the outer side wall of one end, close to the rear end nut, of the fixed threaded column is provided with scale marks along the axial direction, and the outer side wall of the other end of the fixed threaded column is provided with a second thread; the dial plate is annular in structure, is sleeved on the fixed threaded column and is provided with annular scale marks on the surface; the spiral pulling sleeve is sleeved on the fixed rear end sleeve and the fixed thread column, the rear end part of the spiral pulling sleeve is clamped on the dial plate and is fixedly connected with the dial plate, and the inner wall of the rear end part of the spiral pulling sleeve is provided with a thread III matched with the thread II; the spiral pulling sleeve is connected with the second thread of the fixed thread column through the third thread; a rotary pulling sleeve cover having an annular structure, which is fitted over the fixed rear end sleeve and fixed to a rear end portion of the spiral pulling sleeve; the rear end shell is provided with a hollow cylinder structure which is sleeved on the spiral pulling sleeve, the hollow cylinder structure is provided with two parts with different inner diameters and outer diameters, namely a thick end II and a thin end II, the outer wall of the thick end II is provided with a thread IV, and the inner wall of the thick end II is provided with a thread VII; the front end of the rotating sleeve is uniformly provided with a fixing hole V and a linear guide groove matched with the limiting block I in the circumferential direction, the rotating sleeve is sleeved at the front end of the fixed rear end sleeve, the linear guide groove is inserted in the limiting block I, the fixing hole V and the linear guide groove are arranged at intervals, and the outer wall is uniformly provided with spiral guide grooves in the circumferential direction; the rotary sleeve cover is provided with an annular structure, sleeved and clamped at the front end of the rotary pulling sleeve cover and fixed at the front end part of the rotary sleeve; the rotating check ring is provided with two sections of hollow cylinder structures with different inner diameters and outer diameters, namely a thick end III and a thin end III, and is sleeved at the front end of the fixed rear-end sleeve and positioned between the rotating sleeve and the rear-end sleeve; positioning guide cylindrical pins matched with the spiral guide grooves are uniformly arranged on the three outer walls of the thin end of the rotating check ring in the circumferential direction, and the positioning guide cylindrical pins slide in the spiral guide grooves; three connecting holes I are uniformly formed in the three circumferential directions of the thick end of the rotating retainer ring; the front end interface is of a hollow cylinder structure, the front end of the front end interface is provided with a flange II, the inner wall of the rear end is provided with a thread III matched with the thread IV and in threaded connection with the rear end shell, the inner hollow structure of the front end interface is a regular hexagon through hole, and the central axis of the front end interface is positioned at the same position as the central axis of the rear end nut and the rear end sleeve; the movable supporting plate is fixed at the rear end of the rotating check ring and has a round cake-shaped structure, a first round through hole is formed in the middle of the movable supporting plate, and six arc-shaped guide grooves are uniformly distributed outwards in the circumferential direction of the first round through hole; connecting pins matched with the first connecting holes are uniformly arranged on the periphery of the guide groove in the circumferential direction and are used for mounting the connecting pins at the rear end of the rotating check ring; the outer wall of the fixed supporting plate is provided with a thread five matched with the thread seven, the thread is connected to the front end of the rear end shell and is positioned at the rear end of the front end interface, the fixed supporting plate has a columnar structure, a circular through hole II with the same size as the circular through hole I is arranged in the middle of the fixed supporting plate, and the periphery of the circular through hole II is provided with a regular-hexagon sliding groove; the valve block, it has similar triangle sheet structure, be provided with six altogether, the cooperation forms wholly, this similar triangle sheet structure has two crossing plane limits, its rear end plane is provided with the cylinder guide block with guide way looks adaptation, the cylinder guide block slides and sets up in the guide way, the front end plane is provided with the rectangle guide block with slide way looks adaptation, the rectangle guide block slides and sets up in the slide way, a plane of this similar triangle sheet structure is provided with the seal groove along this limit extending direction, another plane is provided with the sealing strip with seal groove looks adaptation along this limit extending direction, two adjacent valve blocks are by seal groove and sealing strip cooperation sliding connection, six valve blocks are pegged graft and are in the same place and constitute regular hexagon by the plane limit in the middle.
Preferably, the pressure relief valve further comprises: the handle ring is of an annular structure, and three connecting holes III are uniformly formed in the circumferential direction of the outer wall of the handle ring; the handle fixing blocks are uniformly arranged on the outer wall of the spiral pulling sleeve in the circumferential direction; one end of the handle is provided with a handle connecting hole I, and a handle connecting hole II is also arranged on the handle; the spiral pulling sleeve is connected with the spiral pulling sleeve through the handle fixing block and can rotate relatively; the handle supporting rod is provided with two sides which are connected together in an angle, and the two ends of the handle supporting rod are provided with four connecting holes; it is connected connecting hole three on the handle ring with handle connecting hole two on the handle, and handle support pole is relative handle ring and handle rotate.
Preferably, the linear guide groove penetrates through a sidewall of the rotating sleeve.
Preferably, the rear end of the rotating retainer ring is uniformly provided with six fixing holes in the circumferential direction, and the positioning guide cylindrical pin is inserted into the six fixing holes.
Preferably, the rotating sleeve cover is evenly provided with a third fixing hole matched with the fifth fixing hole in the circumferential direction, the fifth fixing hole is distributed with the linear guide groove at intervals, and the fifth fixing hole and the third fixing hole are used for being matched to fix the rotating sleeve cover and the rotating sleeve.
Preferably, a second limiting groove matched with the first limiting block is uniformly formed in the inner circumference of the second thin end of the rear end shell.
Preferably, a third cylindrical pin hole is uniformly formed in the circumferential direction of the front end of the spiral pulling sleeve, a fourth fixing hole matched with the third cylindrical pin hole in three-phase mode is uniformly formed in the circumferential direction of the wall body of the rotary pulling sleeve cover, and the spiral pulling sleeve and the rotary pulling sleeve cover are connected through the third cylindrical pin hole and the fourth fixing hole.
Preferably, the outer side wall of the front end part of the fixed rear end sleeve is uniformly provided with first fixing holes in the circumferential direction, and the first fixing holes and the first limiting grooves are arranged at intervals; the rear end of the fixed threaded column is provided with a second fixed hole which corresponds to and is matched with the fixed hole; and the fixed threaded column and the fixed rear-end sleeve are fixed together through the connecting pin after the first fixing hole and the second fixing hole are opposite.
Preferably, the graduation mark is a one-hundred opening value, and the annular graduation mark is a one-fiftieth opening value at the minimum.
The pressure release valve solves the problems and has the following advantages:
1. the invention adopts a regular hexagon open-close type structure, which mainly comprises an open-close component consisting of a valve plate, a fixed supporting plate and a movable supporting plate, and a transmission component consisting of a rotating check ring, a spiral pulling sleeve, a rotating sleeve and a fixed threaded column. Realize opening and shutting of regular hexagon valve through screw drive and guide rail transmission, because the shape of opening and shutting of valve is regular shape of regular hexagon, along with the rotation of handle, the area that the valve opened and shut is the regularity and changes, consequently can accurate control valve aperture.
2. The invention adopts the thread transmission mechanism, can realize high-precision fine adjustment of the opening of the valve by controlling the thread rotation, can realize self-locking, and avoids the counterclockwise rotation of the valve caused by overlarge oil gas pressure, thereby reducing the occurrence of oil gas leakage accidents.
3. The invention adopts the reading mode of the micrometer, the scale mark is a one-hundred opening numerical value, and the annular scale mark is one-fiftieth opening numerical value at minimum, so that the opening of the valve can be accurately read and controlled through the scale mark and the annular scale mark.
4. The mechanical control valve adopts a mechanical control structure with compact structure and longer service life, has reliable structure, convenient operation, smaller radial size of the whole structure, smaller requirement on installation space and convenient installation and operation of the valve in narrow space.
Drawings
FIG. 1 isbase:Sub>A schematic view of the structure of the present invention in an open state (wherein (base:Sub>A) isbase:Sub>A rear view and (b) isbase:Sub>A cross-sectional view A-A);
FIG. 2 isbase:Sub>A schematic view of the closed state structure of the present invention (base:Sub>A isbase:Sub>A rear view, and (b) isbase:Sub>A cross-sectional view A-A);
FIG. 3 is a schematic view of the handle deployment configuration of the present invention;
FIG. 4 is a schematic view of a closed structure of the handle of the present invention;
FIG. 5 is a schematic view of the transmission structure of the present invention;
FIG. 6 is a schematic structural view of the valve opening/closing portion of the present invention;
FIG. 7 is a schematic view of the rear end nut of the present invention;
FIG. 8 isbase:Sub>A schematic view of the fixed back end sleeve configuration of the present invention (shown in (base:Sub>A) rear view, (b) side cross-sectional view, and (c) cross-sectional view A-A);
FIG. 9 is a schematic view of a fixed threaded post according to the present invention;
FIG. 10 is a schematic view of the dial plate structure of the present invention;
FIG. 11 is a schematic view of the construction of the spiral pulling sleeve of the present invention;
FIG. 12 is a schematic view of the rear housing construction of the present invention;
FIG. 13 is a schematic view of a screw sleeve cap according to the present invention;
FIG. 14 is a schematic view of a spiral pull sleeve cover configuration of the present invention;
FIG. 15 is a schematic view of a spiral sleeve structure of the present invention;
FIG. 16 is a schematic view of a rotational retaining ring of the present invention;
FIG. 17 is a schematic view of the construction of the movable support plate of the present invention;
FIG. 18 is a schematic view of the valve plate structure of the present invention.
FIG. 19 is a schematic view of a stationary support plate according to the present invention;
FIG. 20 is a schematic view of the front end interface configuration of the present invention;
FIG. 21 is a schematic view of a handle ring structure of the present invention;
FIG. 22 is a schematic view of the handle support bar of the present invention;
fig. 23 is a schematic view of the structure of the handle of the present invention.
In the figure: 1. a rear end nut; 2. fixing the threaded column; 3. fixing the rear end sleeve; 4. a dial plate; 5. a handle ring; 6. spirally pulling the sleeve; 7. a rear end housing; 8. the sleeve cover is rotationally pulled; 9. rotating the sleeve cover; 10. rotating the sleeve; 11. rotating the retainer ring; 12. a movable support plate; 13. a valve plate; 14. fixing the support plate; 15. a front end interface; 23. a handle; 24. a handle support bar; 28. positioning a guide cylindrical pin; 32. rear end nut threads; 33. a first limiting block; 34. a first limiting groove; 35. a first fixing hole; 39. a first thread; 40. a second thread; 41. scale lines; 42. a second fixing hole; 43. a second limiting block; 44. an annular scale line; 45. a handle fixing block; 46. a third cylindrical pin hole; 47. a third thread; 48. thread four; 49. a second limiting groove; 50. a third fixing hole; 51. a fourth fixing hole; 52. a fifth fixing hole; 53. a linear guide groove; 54. a spiral guide groove; 55. a sixth fixing hole; 56. a first connecting hole; 57. a connecting pin; 58. a guide groove; 59. a rectangular guide block; 60. a cylindrical guide block; 61. a sealing groove; 63. a sliding groove; 64. a fifth thread; 66. a sixth thread; 67. connecting a hole III; 68. a fourth connecting hole; 69. the handle is connected with the first connecting hole; 70. a second handle connecting hole; 71. a seal strip; 72. and a seventh thread.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-23, the present invention provides the following technical solutions: the utility model provides a high pressure oil gas well open-close type aperture control relief valve, this relief valve contains: the device comprises a rear end nut 1, a fixed rear end sleeve 3, a fixed threaded column 2, a dial 4, a spiral pulling sleeve 6, a rotary pulling sleeve cover 8, a rear end shell 7, a rotary sleeve 10, a rotary sleeve cover 9, a rotary check ring 11, a front end interface 15, a movable support plate 12, a fixed support plate 14 and a valve plate 13; the rear-end nut 1 is of a hollow cylinder structure, the hollow cylinder structure is provided with two parts with different inner diameters and outer diameters, namely a first thick end and a first thin end, the inner diameter and the outer diameter of the first thick end are larger than those of the first thin end, the end part of the first thick end is provided with a first flange, and the outer side wall of the first thin end is provided with rear-end nut threads 32; the fixed rear end sleeve 3 has three hollow cylinder structures with different outer diameters, which are marked as a front section, a middle section and a rear section, and the outer diameter of the middle section is larger than that of the front section and the rear section; the cross sections of the inner walls of the front section, the middle section and the rear section in the radial direction are all in a regular hexagon shape except that the inner wall of the end part of the rear section is provided with a first thread 39 matched with the rear end nut thread 32; the rear section is connected with a rear-end nut 1 through threads; a first limiting groove 34 is uniformly arranged on the outer side wall of the end part of the front section in the circumferential direction; the first limiting blocks 33 are uniformly arranged on the outer wall of the middle section in the circumferential direction; the fixed threaded column 2 is of a hollow column structure and is sleeved and fixed on the fixed rear-end sleeve 3; a second limiting block 43 matched with the first limiting groove 34 is arranged at a position, corresponding to the first limiting groove 34 for fixing the rear sleeve 3, on the fixed threaded column 2, and the second limiting block 43 is inserted into the first limiting groove 34; the outer side wall of one end, close to the rear-end nut 1, of the fixed threaded column 2 is provided with a scale mark 41 along the axial direction, and the outer side wall of the other end of the fixed threaded column is provided with a second thread 40; the dial 4 is annular in structure, is sleeved on the fixed threaded column 2 and is provided with annular scale marks 44 on the surface; the spiral pulling sleeve 6 is sleeved on the fixed rear end sleeve 3 and the fixed threaded column 2, the rear end part of the spiral pulling sleeve is clamped on the dial 4 and is fixedly connected with the dial 4, and the inner wall of the rear end part of the spiral pulling sleeve is provided with a thread III 47 matched with the thread II 40; the screw pulling sleeve 6 is connected with the second thread 40 of the fixed threaded column 2 through the third thread 47; the rotary pulling sleeve cover 8 has an annular structure, is sleeved on the fixed rear end sleeve 3 and is fixed at the rear end part of the spiral pulling sleeve 6; the rear end shell 7 is of a hollow cylinder structure, is sleeved on the spiral pulling sleeve 6, and is provided with two parts with different inner diameters and outer diameters, namely a thick end II and a thin end II, wherein the outer wall of the thick end II is provided with a thread IV 48, and the inner wall of the thick end II is provided with a thread VII 72; the front end of the rotating sleeve 10 is uniformly provided with a fifth fixing hole 52 and a linear guide groove 53 matched with the first limiting block 33 in the circumferential direction, the fifth fixing hole 52 is sleeved at the front end of the sleeve 3 at the fixed rear end, the linear guide groove 53 is inserted into the first limiting block 33, the fifth fixing hole 52 and the linear guide groove 53 are arranged at intervals, and the outer wall is uniformly provided with a spiral guide groove 54 in the circumferential direction; the rotary sleeve cover 9 is of an annular structure, is sleeved and clamped at the front end of the rotary pulling sleeve cover 8 and is fixed at the front end part of the rotary sleeve 10; the rotating check ring 11 is provided with two sections of hollow cylinder structures with different inner diameters and outer diameters, namely a thick end III and a thin end III, and the rotating check ring 11 is sleeved at the front end of the fixed rear-end sleeve 3 and is positioned between the rotating sleeve 10 and the rear-end sleeve 3; positioning guide cylindrical pins 28 matched with the spiral guide grooves 54 are uniformly arranged on the three outer walls of the thin end of the rotating retainer ring 11 in the circumferential direction, and the positioning guide cylindrical pins 28 slide in the spiral guide grooves 54; three connecting holes I56 are uniformly formed in the three circumferential directions of the thick end of the rotating retainer ring 11; the front end interface 15 is of a hollow cylinder structure, the front end of the front end interface is provided with a flange II, the inner wall of the rear end is provided with a thread six 66 matched with the thread four 48, the front end interface is in threaded connection with the rear end shell 7, the inner hollow structure of the front end interface is a regular hexagon through hole, and the central axis of the front end interface is positioned at the same position as the central axis of the rear end nut 1 and the fixed rear end sleeve 3; the movable supporting plate 12 is fixed at the rear end of the rotating check ring 11 and has a round cake-shaped structure, a first round through hole is formed in the middle of the movable supporting plate, and six arc-shaped guide grooves 58 are uniformly distributed outwards in the circumferential direction of the first round through hole; connecting pins 57 matched with the first connecting holes 56 are uniformly arranged on the periphery of the guide groove 58 in the circumferential direction and are used for being mounted at the rear end of the rotating retainer ring 11; the outer wall of the fixed supporting plate 14 is provided with a thread five 64 matched with the thread seven 72, the thread is connected to the front end of the rear end shell 7 and is positioned at the rear end of the front end interface 15, the fixed supporting plate has a columnar structure, a circular through hole two with the same size as the circular through hole one is arranged in the middle of the columnar structure, and the periphery of the circular through hole two is provided with a regular-hexagon sliding groove 63; the valve plate 13 has a triangular-like sheet structure, six sheets are arranged, the triangular-like sheet structure is matched to form a whole, the triangular-like sheet structure has two intersected plane edges, the rear end plane of the triangular-like sheet structure is provided with a cylindrical guide block 60 matched with the guide groove 58, the cylindrical guide block 60 is arranged in the guide groove 58 in a sliding mode, the front end plane of the triangular-like sheet structure is provided with a rectangular guide block 59 matched with the sliding groove 63, the rectangular guide block 59 is arranged in the sliding groove 63 in a sliding mode, one plane edge of the triangular-like sheet structure is provided with a sealing groove 61 along the extending direction of the edge, the other plane edge of the triangular-like sheet structure is provided with a sealing strip 71 matched with the sealing groove 61 along the extending direction of the edge, two adjacent valve plates 13 are matched and connected with the sealing strip 71 in a sliding mode through the sealing groove 61, and the six valve plates 13 are connected in an inserting mode through inserting mode, and the plane edges form a regular hexagon in the middle.
The pressure relief valve further comprises: the handle ring 5, the handle fixing block 45, the handle 23 and the handle supporting rod 24; the handle ring 5 is of an annular structure, and three connecting holes III 67 are uniformly formed in the circumferential direction of the outer wall of the handle ring; the handle fixing blocks 45 are circumferentially and uniformly arranged on the outer wall of the spiral pulling sleeve 6; one end of the handle 23 is provided with a first handle connecting hole 69, and a second handle connecting hole 70 is also formed in the first handle connecting hole; which is connected with the spiral pulling sleeve 6 through a handle fixing block 45 and can rotate relatively; the handle support bar 24 is provided with two sides which are connected together in an angle, and two ends of the handle support bar are provided with four connecting holes 68; it is connected connecting hole three 67 on the handle ring 5 and handle connecting hole two 70 on the handle 23, and handle support rod 24 can rotate handle ring 5 and handle 23 relatively.
The linear guide groove 53 penetrates the side wall of the rotating sleeve 10.
The rear end of the rotating retainer ring 11 is uniformly provided with six fixing holes 55 in the circumferential direction, and the positioning guide cylindrical pin 28 is inserted into the six fixing holes 55.
The third fixing holes 50 matched with the fifth fixing holes 52 are uniformly formed in the circumferential direction of the rotary sleeve cover 9, the fifth fixing holes 52 and the linear guide grooves 53 are arranged at intervals, and the fifth fixing holes 52 and the third fixing holes 50 are used for being matched with each other to fix the rotary sleeve cover 9 and the rotary sleeve 10.
A second limiting groove 49 matched with the first limiting block 33 is uniformly arranged in the inner circumference of the second thin end of the rear-end shell 7.
The front end circumference of spiral pulling sleeve 6 evenly is provided with cylindrical pin hole three 46, and the wall body circumference of rotatory pulling sleeve lid 8 evenly is provided with the fixed orifices four 51 with three 46 looks adaptations of cylindrical pin hole, and spiral pulling sleeve 6 realizes being connected through cylindrical pin hole three 46 and fixed orifices four 51 with rotatory pulling sleeve lid 8.
The outer side wall of the front end part of the fixed rear end sleeve 3 is uniformly provided with first fixing holes 35 in the circumferential direction, and the first fixing holes 35 and the first limiting grooves 34 are distributed at intervals; the rear end of the fixed threaded column 2 is provided with a second fixing hole 42 which corresponds to and is matched with the first fixing hole 35; the first fixing hole 35 and the second fixing hole 42 are opposite to each other, and then the fixed threaded column 2 and the fixed rear-end sleeve 3 are fixed together through a connecting pin.
The tick mark 41 is a one hundred degree opening value and the annular tick mark 44 is a minimum one fiftieth opening value.
Example 1
The use method comprises the following steps:
the handle 23 can be folded, and the handle 23 is folded and leaned against the rear end shell 7 in the initial state;
the installation (connection) mode of the relief valve body and the pipeline is as follows: firstly, respectively connecting a first flange of a nut 1 at the rear end of a pressure release valve and a second flange of a front end interface 15 into a pipeline, so that the pressure release valve and the pipeline are connected into a whole;
when the pressure release valve needs to be opened, the handle 23 is rotated clockwise, so that the spiral pulling sleeve 6 is driven to rotate along with the spiral pulling sleeve, and the spiral pulling sleeve 6 is in threaded connection with the fixed threaded column 2, so that self-locking can be formed between the spiral pulling sleeve 6 and the fixed threaded column 2, the spiral pulling sleeve 6 can be prevented from rotating reversely due to pressure, and the reading of the dial 4 can be obtained according to the number of turns of the handle 23 when the pressure release valve is opened; the movement of the spiral pulling sleeve 6 along the axial direction drives the spiral sleeve 10 to move linearly along the axial direction, so that the rotating retainer ring 11 is forced to rotate along the axial direction, and the movable support plate 12 is driven to rotate along the circumferential direction through the fixed connection between the first connecting hole 56 and the connecting pin 57; due to the matching of the cylindrical guide block 60 and the guide groove 58 and the limitation of the sliding groove 63 of the rectangular guide block 59 in the fixed support plate 14, the valve plate 13 can only move along the sliding groove 63, and when the valve plate 13 rotates clockwise, the center of the valve plate 13 gradually forms a regular hexagonal hole, so that the control of the opening degree of the valve is facilitated;
when the valve is in the closed state, the zero scale of scale mark 41 and the zero scale of annular scale mark 44 are in the same position, and along with the rotation of handle 23, the valve is opened gradually, and the scale mark is revealed gradually, can accurate control the size in regular hexagon hole through the number of turns of rotation of control handle 23, reads the aperture data that the scale interval can obtain the relief valve.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (9)
1. The utility model provides a high pressure oil gas well open-close type aperture control relief valve which characterized in that, this relief valve contains:
the rear end nut (1) is provided with a hollow cylinder structure, the hollow cylinder structure is provided with two parts with different inner diameters and outer diameters, namely a thick end I and a thin end I, the inner diameter and the outer diameter of the thick end I are larger than those of the thin end I, the end part of the thick end I is provided with a flange I, and the outer side wall of the thin end I is provided with rear end nut threads (32);
the fixed rear end sleeve (3) is provided with three sections of hollow cylinder structures with different outer diameters, and is marked as a front section, a middle section and a rear section, and the outer diameter of the middle section is larger than the outer diameters of the front section and the rear section; the cross sections of the inner walls of the front section, the middle section and the rear section along the radial direction are in a regular hexagon shape except that a first thread (39) matched with a rear nut thread (32) is arranged on the inner wall of the end part of the rear section; the rear section is connected with the rear end nut (1) through threads; a first limiting groove (34) is uniformly arranged on the outer side wall of the end part of the front section in the circumferential direction; the first limiting blocks (33) are uniformly arranged on the outer wall of the middle section in the circumferential direction;
the fixed threaded column (2) is of a hollow column structure and is sleeved and fixed on the fixed rear-end sleeve (3); a second limiting block (43) matched with the first limiting groove (34) is arranged at the position, corresponding to the first limiting groove (34) of the fixed rear-end sleeve (3), on the fixed threaded column (2), and the second limiting block (43) is inserted into the first limiting groove (34); the outer side wall of one end, close to the rear-end nut (1), of the fixed threaded column (2) is provided with scale marks (41) along the axial direction, and the outer side wall of the other end of the fixed threaded column is provided with a second thread (40);
the dial plate (4) is annular in structure, is sleeved on the fixed threaded column (2), and is provided with annular scale marks (44) on the surface;
the spiral pulling sleeve (6) is sleeved on the fixed rear end sleeve (3) and the fixed threaded column (2), the end part of the rear end of the spiral pulling sleeve is clamped on the dial plate (4) and is fixedly connected with the dial plate (4), and the inner wall of the end part of the rear end of the spiral pulling sleeve is provided with a thread III (47) matched with the thread II (40); the spiral pulling sleeve (6) is connected with the second thread (40) of the fixed threaded column (2) through the third thread (47);
a rotary pulling sleeve cover (8) which has an annular structure, is sleeved on the fixed rear end sleeve (3) and is fixed at the rear end part of the spiral pulling sleeve (6);
the rear end shell (7) is provided with a hollow cylinder structure which is sleeved on the spiral pulling sleeve (6), the hollow cylinder structure is provided with two parts with different inner diameters and outer diameters, the two parts are marked as a thick end II and a thin end II, the outer wall of the thick end II is provided with a thread IV (48), and the inner wall of the thick end II is provided with a thread VII (72);
the front end of the rotating sleeve (10) is uniformly provided with a fifth fixing hole (52) and a linear guide groove (53) matched with the first limiting block (33) in the circumferential direction, the rotating sleeve is sleeved at the front end of the fixed rear end sleeve (3), the linear guide groove (53) is inserted into the first limiting block (33), the fifth fixing hole (52) and the linear guide groove (53) are arranged at intervals, and the outer wall is uniformly provided with a spiral guide groove (54) in the circumferential direction;
the rotary sleeve cover (9) is of an annular structure, is sleeved and clamped at the front end of the rotary pulling sleeve cover (8) and is fixed at the front end part of the rotary sleeve (10);
the rotating check ring (11) is provided with two sections of hollow cylinder structures with different inner diameters and outer diameters and marked as a thick end III and a thin end III, and the rotating check ring (11) is sleeved at the front end of the fixed rear end sleeve (3) and is positioned between the rotating sleeve (10) and the rear end sleeve (3); positioning guide cylindrical pins (28) matched with the spiral guide grooves (54) are uniformly arranged on the three outer walls of the thin end of the rotating retainer ring (11) in the circumferential direction, and the positioning guide cylindrical pins (28) slide in the spiral guide grooves (54); three connecting holes I (56) are uniformly formed in the three circumferential directions of the thick end of the rotating retainer ring (11);
the front end interface (15) is of a hollow cylinder structure, the front end of the front end interface is provided with a flange II, the inner wall of the rear end of the front end interface is provided with a thread six (66) matched with the thread four (48), the front end interface is in threaded connection with the rear end shell (7), the inner hollow structure of the front end interface is a regular hexagon through hole, and the central axis of the front end interface is positioned at the same position as the central axis of the rear end nut (1) and the central axis of the fixed rear end sleeve (3);
the movable supporting plate (12) is fixed at the rear end of the rotating check ring (11) and has a round cake-shaped structure, a first round through hole is formed in the middle of the movable supporting plate, and six arc-shaped guide grooves (58) are uniformly distributed outwards in the circumferential direction of the periphery of the first round through hole; connecting pins (57) matched with the first connecting holes (56) are uniformly arranged on the periphery of the guide groove (58) in the circumferential direction and are used for being mounted at the rear end of the rotating retainer ring (11);
the outer wall of the fixed supporting plate (14) is provided with a thread five (64) matched with the thread seven (72), the fixed supporting plate is in threaded connection with the front end of the rear end shell (7) and is positioned at the rear end of the front end interface (15), the fixed supporting plate has a columnar structure, a circular through hole two with the same size as the circular through hole one is arranged in the middle of the fixed supporting plate, and the periphery of the circular through hole two is provided with a regular-hexagon sliding groove (63);
the valve plate (13) is provided with a triangular sheet structure, six valve plates are arranged, the triangular sheet structure is matched to form a whole, the triangular sheet structure is provided with two intersected plane edges, the rear end plane of the triangular sheet structure is provided with a cylindrical guide block (60) matched with the guide groove (58), the cylindrical guide block (60) is arranged in the guide groove (58) in a sliding mode, the front end plane of the triangular sheet structure is provided with a rectangular guide block (59) matched with the sliding groove (63), the rectangular guide block (59) is arranged in the sliding groove (63) in a sliding mode, one plane edge of the triangular sheet structure is provided with a sealing groove (61) along the edge extending direction, the other plane edge of the triangular sheet structure is provided with a sealing strip (71) matched with the sealing groove (61) along the edge extending direction, two adjacent valve plates (13) are matched and connected with the sealing strip (71) in a sliding mode through the sealing groove (61), and the six valve plates (13) are connected together in an inserting mode, and the plane edges form a regular hexagon in the middle.
2. The open-close type opening control pressure relief valve for high-pressure oil and gas wells according to claim 1, characterized in that the pressure relief valve further comprises:
the handle ring (5) is of an annular structure, and three connecting holes III (67) are uniformly formed in the circumferential direction of the outer wall of the handle ring;
the handle fixing blocks (45) are uniformly arranged on the outer wall of the spiral pulling sleeve (6) in the circumferential direction;
the handle (23), one end of which is provided with a first handle connecting hole (69) and the handle connecting hole (70); which is connected with the spiral pulling sleeve (6) through a handle fixing block (45) and can rotate relatively;
a handle support bar (24) having two sides connected together at an angle, both ends of which are provided with a connection hole four (68); the handle support rod (24) can rotate relative to the handle ring (5) and the handle (23) by connecting a third connecting hole (67) on the handle ring (5) with a second connecting hole (70) on the handle (23).
3. The open-close type opening control pressure relief valve for the high-pressure oil and gas well is characterized in that the linear guide groove (53) penetrates through the side wall of the rotating sleeve (10).
4. The opening-closing type opening control pressure relief valve for the high-pressure oil-gas well is characterized in that a fixed hole six (55) is circumferentially and uniformly arranged at the rear end of the rotating retainer ring (11), and the positioning guide cylindrical pin (28) is inserted into the fixed hole six (55).
5. The opening-closing type opening control pressure relief valve for the high-pressure oil and gas well is characterized in that fixing holes III (50) matched with fixing holes V (52) are uniformly formed in the circumferential direction of the rotary sleeve cover (9), the fixing holes V (52) and the linear guide grooves (53) are arranged at intervals, and the fixing holes V (52) and the fixing holes III (50) are used for being matched with each other to fix the rotary sleeve cover (9) and the rotary sleeve (10).
6. The opening-closing type opening control pressure relief valve for the high-pressure oil-gas well as defined in claim 1 is characterized in that a second limiting groove (49) matched with the first limiting block (33) is uniformly arranged in the inner circumference of the second thin end of the rear-end shell (7).
7. The opening-closing type opening control pressure relief valve for the high-pressure oil-gas well according to claim 1, wherein a third cylindrical pin hole (46) is uniformly formed in the circumferential direction of the front end of the spiral pulling sleeve (6), a fourth fixing hole (51) matched with the third cylindrical pin hole (46) is uniformly formed in the circumferential direction of the wall body of the rotary pulling sleeve cover (8), and the spiral pulling sleeve (6) and the rotary pulling sleeve cover (8) are connected through the third cylindrical pin hole (46) and the fourth fixing hole (51).
8. The opening-closing type opening control pressure relief valve for the high-pressure oil-gas well according to claim 1, characterized in that first fixing holes (35) are uniformly arranged on the outer side wall of the front end part of the fixed rear-end sleeve (3) in the circumferential direction, and the first fixing holes (35) and the first limiting grooves (34) are arranged at intervals; a second fixing hole (42) corresponding to and matched with the first fixing hole (35) is formed in the rear end of the fixed threaded column (2); and the fixed threaded column (2) and the fixed rear-end sleeve (3) are fixed together through the connecting pin after the first fixing hole (35) and the second fixing hole (42) are opposite.
9. The opening-closing type opening control pressure relief valve for the high-pressure oil and gas well is characterized in that the scale marks (41) and the annular scale marks (44) both adopt a reading mode of a micrometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210800869.9A CN115288635B (en) | 2022-07-08 | 2022-07-08 | Open-close type opening control relief valve for high-pressure oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210800869.9A CN115288635B (en) | 2022-07-08 | 2022-07-08 | Open-close type opening control relief valve for high-pressure oil-gas well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115288635A true CN115288635A (en) | 2022-11-04 |
| CN115288635B CN115288635B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210800869.9A Active CN115288635B (en) | 2022-07-08 | 2022-07-08 | Open-close type opening control relief valve for high-pressure oil-gas well |
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| Country | Link |
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| CN (1) | CN115288635B (en) |
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|---|---|
| CN115288635B (en) | 2023-07-28 |
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