CN118386077A - Deep water christmas tree valve seat sealing surface grinding device - Google Patents
Deep water christmas tree valve seat sealing surface grinding device Download PDFInfo
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- CN118386077A CN118386077A CN202410869133.6A CN202410869133A CN118386077A CN 118386077 A CN118386077 A CN 118386077A CN 202410869133 A CN202410869133 A CN 202410869133A CN 118386077 A CN118386077 A CN 118386077A
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- grinding
- valve seat
- sealing surface
- driving rod
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- 238000000227 grinding Methods 0.000 title claims abstract description 170
- 238000007789 sealing Methods 0.000 title claims abstract description 130
- 241000191291 Abies alba Species 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 7
- 240000005572 Syzygium cordatum Species 0.000 claims description 2
- 235000006650 Syzygium cordatum Nutrition 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 description 31
- 239000002184 metal Substances 0.000 description 29
- 238000000034 method Methods 0.000 description 22
- 230000033001 locomotion Effects 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 14
- 238000005498 polishing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
- B24B15/04—Machines or devices designed for grinding seat surfaces; Accessories therefor on valve members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to the technical field of exploration drilling equipment, and discloses a deep water christmas tree valve seat sealing surface grinding device, which comprises a driving assembly and a grinding assembly, wherein the driving assembly is fixed on a christmas tree body, the grinding assembly comprises a driving rod, a pre-tightening assembly, a grinding assembly and a rotary shaft sleeve, the end part of a first end of the driving rod is in transmission connection with the driving assembly, and a second end of the driving rod can be installed in a valve cavity of the christmas tree body; the pre-tightening assembly is arranged around the circumference of the first end and can reciprocate along the axial direction of the driving rod; the grinding component is installed around the circumference of the second end and can be in friction connection with the sealing surface of the valve seat; the rotary shaft sleeve is rotationally connected with the driving rod, and the driving rod can axially reciprocate in the rotary shaft sleeve through the guide assembly; the rotating shaft sleeve is arranged between the pre-tightening assembly and the grinding assembly, and the pre-tightening assembly is abutted to the end part of the rotating shaft sleeve. The grinding device provided by the invention has the advantages of simple structure and convenience in operation, and can realize fine grinding of the sealing surface of the valve seat.
Description
Technical Field
The invention relates to the technical field of exploration drilling equipment, in particular to a deep water production tree valve seat sealing surface grinding device.
Background
The conventional deep water christmas tree combined tree body is integrated with an AMV annulus main valve, an AAV annulus inlet valve and a PMV production main valve, a metal sealing structure design is adopted between a valve seat of the deep water valve and the combined tree body, a valve seat sealing surface is divided into an upstream metal sealing surface of the valve seat and a downstream metal sealing surface of the valve seat, the deep water valve adopts a downstream sealing structure design of the valve seat, and the sealing principle is as follows: the medium enters the valve cavity through the upstream valve seat, the working medium is sealed by the downstream valve seat and the valve body, and the downstream valve seat metal sealing surface is a main working sealing surface. In order to ensure the pneumatic sealing performance of the inner hole metal sealing surface and the oil hanging metal sealing, the roughness of the metal sealing surface is required to be very high (less than 0.4) and cannot be scratched. The conventional milling and machining sealing surface has turning tool grains, so that the requirement of the roughness of the valve seat metal sealing surface of 0.4 cannot be met, the pneumatic sealing cannot be realized, and the requirement of the roughness of the valve seat metal sealing surface of 0.4 can be met only by carrying out secondary grinding and polishing on the metal sealing surface.
The existing valve seat metal sealing surface grinding technology is shown in fig. 3, only the valve seat sealing surface of an independent valve can be ground, simple grinding is realized by manually operating an upper and lower adjusting handle to assist in applying axial thrust, and the upstream sealing of the valve seat and the bidirectional grinding of the downstream metal sealing surface of the valve seat are realized by changing the inlet and outlet directions of the valve body. In addition, because the deep water tree body is of an integrated design, and the valve cavity of the AMV annulus main valve and the AAV annulus inlet valve is of an inclined design, the main valve of the AMV annulus, the AAV annulus inlet valve and the downstream valve seat metal sealing surface which is the most critical for PMV production main valve cannot be ground by changing the grinding direction due to the limitation of the space in the tree body, and the valve seat is easy to seal failure caused by the fact that the inclined main valve of the AMV annulus, the upstream valve seat metal sealing surface and the downstream valve seat metal sealing surface of the AAV annulus inlet valve cannot be ground in the prior art, so that leakage cannot be caused on site, and the marine environment is polluted.
Disclosure of Invention
In view of the above, the invention provides a deep water christmas tree valve seat sealing surface grinding device, which solves the problem that the existing valve seat metal sealing surface grinding device cannot grind the upstream and downstream valve seat metal sealing surfaces of an inclined valve body, so that the valve seat is easy to seal and lose efficacy.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a deep water christmas tree valve seat sealing face grinder, includes drive assembly and grinding assembly, drive assembly can be fixed in the christmas tree body, the grinding assembly includes:
the driving rod comprises a first end and a second end, the end part of the first end is in transmission connection with the driving assembly, and the second end can be installed in the valve cavity of the tree body;
A pretension assembly mounted circumferentially around the first end, the pretension assembly being capable of reciprocating along an axial direction of the drive rod;
A grinding assembly mounted circumferentially about the second end, the grinding assembly being frictionally connectable to the valve seat sealing surface;
The rotating shaft sleeve is rotationally connected with the driving rod, and the driving rod can axially reciprocate in the rotating shaft sleeve through the guide assembly; the rotating shaft sleeve is arranged between the pre-tightening assembly and the grinding assembly, and the pre-tightening assembly is abutted to the end part of the rotating shaft sleeve.
Preferably, the pre-tightening assembly comprises a pre-tightening cap and a pre-tightening spring, the pre-tightening cap is rotatably connected to the first end, and two ends of the pre-tightening spring are respectively abutted to the pre-tightening cap and the rotary guide assembly.
Preferably, the grinding assembly comprises a support and a grinding member, wherein the support is connected with the second end in a circumferential fit manner; the two sides of the supporting piece are both provided with the grinding piece, and the grinding surface of the grinding piece faces the sealing surface of the valve seat to be ground.
Preferably, the grinding assembly further comprises a buffer member disposed between the support member and the grinding member.
Preferably, the grinding assembly further comprises fixing members, each of which is provided with a fixing member on a side away from the supporting member, and the fixing members are installed around the circumference of the driving rod.
Preferably, the guide assembly comprises guide grooves and guide keys, the guide grooves are symmetrically and penetratingly arranged on the inner side of the rotary shaft sleeve, and at least one group of guide grooves are arranged; the driving rod is provided with a limiting groove corresponding to the guide groove, one side of the guide key is installed in the limiting groove, and the other side of the guide key is abutted to the guide groove.
Preferably, the grinding assembly further comprises a first centralizing assembly, the first centralizing assembly comprises a fixed sleeve and a fixed piece, the fixed sleeve is arranged on the outer side of the rotary shaft sleeve in a surrounding mode, and a mounting groove is formed in the outer side wall of the fixed sleeve; the fixing piece is installed in the installation groove, and the fixing piece can be in interference fit with the valve cavity of the tree body of the christmas tree.
Preferably, the grinding assembly further comprises a second centralizing assembly, the second centralizing assembly comprises a bearing and a clamp spring, and two ends of the bearing are respectively arranged on the rotary shaft sleeve and the fixed sleeve; and one end of the clamp spring is arranged on the fixed sleeve, and the other end of the clamp spring is abutted to the outer side of the bearing.
Preferably, the driving assembly comprises a driving motor, a conversion sleeve, a second guide rail and an operating handle, wherein a first guide rail is arranged on one side of the driving motor; one end of the conversion sleeve is connected with an output shaft of the driving motor, and the other end of the conversion sleeve is connected with a first end of the driving rod so as to realize transmission connection between the driving motor and the driving rod; the first guide rail is connected with the second guide rail in a sliding manner; the operating handle is connected with the driving motor, and the driving motor can reciprocate along the second guide rail by rotating the operating handle.
Preferably, the grinding device further comprises a support, the support being mountable to the tree body of the tree.
Preferably, the driving assembly further comprises a base, the end portion of the second guide rail is abutted to the base, and the base can be mounted on the support.
The invention provides a deep water christmas tree valve seat sealing surface grinding device, which has the beneficial effects that compared with the prior art:
The driving assembly provides driving force for the movement of the driving rod, the pre-tightening assembly can reciprocate along the axial direction of the driving rod, and the pre-tightening force is adjusted by adjusting the relative height of the pre-tightening assembly and the driving rod so as to provide self-pre-tightening force in the grinding process of the sealing surface of the valve seat, so that the grinding assembly is precisely attached to the sealing surface of the downstream valve seat; in addition, the rotary shaft sleeve can perform circumferential rotary motion along with the driving rod under the driving effect, the grinding component is driven to rotate through the circumferential rotary motion, so that the omnibearing precision grinding of the sealing surface of the valve seat is realized, the driving rod can perform axial reciprocating motion in the rotary shaft sleeve through the guide component, the upstream sealing surface of the valve seat or the downstream sealing surface of the valve seat can be switched to grinding through the axial reciprocating motion, the inclined sealing surfaces of the upstream and downstream valve seats are ground in the primary grinding process, the tool replacement time can be effectively reduced, and the grinding working efficiency is improved.
The grinding device disclosed by the invention is simple in structure and convenient to operate, can be used for finely grinding the sealing surface of the valve seat, and can be used for grinding and repairing the sealing surface of the inner ultra-deep hole in the process of recovering and repairing the tree body of the christmas tree.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the deepwater subsea tree of the present invention;
FIG. 2 is a partial schematic view of "A" in FIG. 1;
FIG. 3 is a schematic diagram of a prior art valve seat metal seal face grinding technique;
FIG. 4 is a schematic view of the drive assembly of the present invention;
FIG. 5 is a schematic view of the structure of the polishing assembly of the present invention;
FIG. 6 is a partial schematic view of "B" in FIG. 5;
FIG. 7 is a schematic cross-sectional view of "C-C" in FIG. 5;
FIG. 8 is a schematic illustration of the process of grinding the sealing surface downstream of the AMV valve seat in the apparatus of the present invention;
FIG. 9 is a schematic illustration of the process of grinding an upstream sealing surface of an AMV valve seat in accordance with the present invention;
FIG. 10 is a schematic illustration of the process of grinding the downstream sealing surface of an AAV valve seat by the apparatus of the present invention;
FIG. 11 is a schematic illustration of the process of grinding an upstream sealing surface of an AAV valve seat by the apparatus of the present invention;
FIG. 12 is a schematic illustration of the process of grinding the downstream sealing surface of a PMV valve seat in accordance with the present invention;
FIG. 13 is a schematic illustration of the process of grinding the upstream sealing surface of a PMV valve seat with the apparatus of the present invention.
In the figures, 100-drive assembly, 110-drive motor, 120-transition sleeve, 130-first rail, 140-second rail, 150-operating handle, 160-first base, 200-grinding assembly, 210-drive rod, 221-pretension cap, 222-pretension spring, 230-grinding assembly, 231-support, 232-grinding member, 233-buffer, 234-spacer, 235-platen, 236-lock nut, 240-swivel sleeve, 251-guide slot, 252-guide key, 261-stationary sleeve, 262-fitting, 271-bearing, 272-clamp spring, 280-flange, 281-flange bolt, 300-tree body, 310-AMV annulus main valve, 320-AAV entry valve, 330-PMV production main valve, 340-valve cavity, 350-valve passage, 360-valve inlet, 370-valve outlet, 380-upstream valve seat sealing surface, 390-downstream valve seat sealing surface, 400-support, 410-second base, 420-mount, 510-mount hole, 520-bolt, 530-nut.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The grinding device for the valve seat sealing surface of the deep water christmas tree can be used for marine petroleum and natural gas exploration drilling equipment, solves the problem that the downstream valve seat metal sealing surfaces of three valve cavities of an AMV annulus main valve, an AAV annulus inlet valve and a PMV production main valve of a deep water christmas tree combined tree body cannot be ground due to the special spatial characteristics of the combined tree body, and solves the problems that the inclined upstream and downstream valve seat metal sealing surfaces of the AMV annulus main valve and the AAV annulus inlet valve cannot be ground, the valve seat sealing failure is caused by poor machining roughness of the valve seat metal sealing surfaces, and the like.
The invention provides a deep water christmas tree valve seat sealing surface grinding device, which comprises a driving assembly 100 and a grinding assembly 200, wherein the driving assembly 100 can be fixed on a christmas tree body 300, and the grinding assembly 200 can grind the valve seat sealing surface under the driving of the driving assembly 100.
As shown in fig. 1 and fig. 2, the deep water christmas tree is a combined tree body design, and integrates three valve cavities 340 and a valve channel 350 of an AMV annulus main valve 310, an AAV annulus inlet valve 320 and a PMV production main valve 330, wherein the interior of the tree body is a valve inlet 360, the exterior is a valve outlet 370, and the valve cavities 340 and the valve channel 350 of the AMV annulus main valve 310, the AAV annulus inlet valve 320 are in an inclined design; each valve chamber 340 contains an upstream valve seat sealing surface 380 and a downstream valve seat sealing surface 390, wherein the downstream valve seat sealing surface 390 is the primary sealing surface for sealing the well medium in the direction of the valve inlet 360 to the valve outlet 370.
In some embodiments of the present invention, the outlets of the AMV annulus main valve 310, the AAV annulus inlet valve 320, and the PMV production main valve 330 are all provided with mounting holes 510 for mounting the stand 400, and the grinding device is fixed to the tree body 300 by the stand 400. Preferably, the mounting holes 510 are bolt holes for planting wires, the support 400 is connected and fixed to the tree body 300 by bolts 520 and nuts 530, and the grinding apparatus is mounted to the support 400.
Further, the support 400 includes a second base 410, and the second base 410 is mounted on the tree 300 through bolts 520 and bolt holes for planting wires; preferably, the support 400 may further include a mounting seat 420, the mounting seat 420 is fixed on a surface of the second base 410 far away from the tree 300, the grinding assembly is mounted on the mounting seat 420, and the mounting seat 420 may be in contact connection with the second base 410, or a certain inclination angle is formed between the mounting seat 420 and the second base 410, so as to adapt to the inclination angle of the valve cavity 340.
For example, the support 400 applied to the AMV annulus main valve 310 and the AAV annulus inlet valve 320 is fixedly installed on the annulus side of the deepwater christmas tree body 300 at the bottom through bolts 520 and nuts 530, the installation seat 420 is obliquely arranged, and the inclination angle of the installation seat 420 relative to the horizontal direction is the same as the inclination angle of the valve channel 350 of the AMV annulus main valve 310 and the AAV annulus inlet valve 320 relative to the vertical direction, so as to install the driving assembly 100, realize that the output shaft of the driving motor 110 is coaxial with the valve channel 350, and realize that the downstream valve seat sealing surface 390 and the upstream valve seat sealing surface 380 with the inclination angles are simultaneously ground.
The bottom of the support 400 applied to the PMV production main valve 330 is fixedly arranged on the production valve group side of the deep water christmas tree body 300 through bolts 520 and nuts 530, and the driving assembly 100 is directly arranged on the surface of the support 400, so that the downstream valve seat sealing surface 390 and the upstream valve seat sealing surface 380 with inclined angles are simultaneously ground.
In some embodiments of the present invention, as shown in fig. 4, the driving assembly 100 includes a driving motor 110, a switching sleeve 120, a second guide rail 140, and an operating handle 150.
Wherein, one side of driving motor 110 is provided with first guide rail 130, and first guide rail 130 sliding connection is in second guide rail 140, through the cooperation of first guide rail 130 and second guide rail 140, realizes driving motor 110 along the upper and lower rectilinear motion of guide rail, through adjusting driving motor 110's high position in order to realize the grinding to the sealed face of different degree of depth disk seat.
One end of the conversion sleeve 120 is connected with an output shaft of the driving motor 110 in a matching way, and the other end of the conversion sleeve is connected with a first end of the driving rod 210 in a transmission way so as to realize the transmission connection between the driving motor 110 and the driving rod 210, and the conversion sleeve is used for connecting the driving rod 210 to a rotating output shaft of the driving motor 110 to drive the driving rod 210 to rotate.
The operation handle 150 is connected with the driving motor 110, and grinding of sealing surfaces of valve seats with different depths is achieved by rotating the operation handle 150 to enable the driving motor 110 to reciprocate along the second guide rail 140.
Optionally, the driving assembly 100 further includes a first base 160, an end of the second rail 140 abuts against the first base 160, and the first base 160 can be mounted on the support 400. Preferably, the first base 160 is a magnetic attraction base, and the driving assembly 100 is fixed on the support 400 by magnetic attraction generated by electromagnetic effect, so as to realize rapid installation and fixation of the driving assembly 100.
In some embodiments of the present invention, as shown in fig. 5 and 7, the grinding assembly 200 includes a drive rod 210, a pretension assembly, a grinding assembly 230, and a rotating sleeve 240.
The driving assembly 100 provides driving force for the movement of the driving rod 210, the pre-tightening assembly can reciprocate along the axial direction of the driving rod 210, and the pre-tightening force is adjusted by adjusting the relative height of the pre-tightening assembly and the driving rod 210 so as to provide self-pre-tightening force in the grinding process of the sealing surface of the valve seat, so that the grinding assembly 230 is precisely attached to the sealing surface 390 of the downstream valve seat; in addition, the rotary shaft sleeve 240 can perform circumferential rotary motion along with the driving rod 210 under the driving effect, the grinding assembly 230 is driven to rotate through the circumferential rotary motion so as to realize omnibearing precise grinding of the valve seat sealing surface, the driving rod 210 can perform axial reciprocating motion in the rotary shaft sleeve 240 through the guide assembly, the axial reciprocating motion can be switched to grind the upstream valve seat sealing surface 380 or grind the downstream valve seat sealing surface 390, inclined upstream and downstream valve seat sealing surfaces 390 are ground in one grinding process at the same time, tool replacement time can be effectively reduced, and grinding work efficiency is improved.
In some embodiments of the present invention, the drive rod 210 includes a first end and a second end; the end of the first end of the drive rod 210 is drivingly connected to the rotary output shaft of the drive assembly 100, and the second end of the drive rod 210 is mountable into the valve cavity 340 of the tree body 300.
Specifically, the end of the first end of the driving rod 210 is matched with the shape of the inner ring of the conversion sleeve 120, so as to achieve the matching between the driving rod 210 and the rotating output shaft of the driving motor 110, for example, the shape of the first end of the driving rod 210 may be polygonal, circular or other irregular shape.
In some embodiments of the present invention, a pretensioning assembly is mounted circumferentially around the first end of the drive rod 210, and the pretensioning assembly is capable of reciprocating in the axial direction of the drive rod 210.
Alternatively, the pre-tightening assembly includes a pre-tightening cap 221 and a pre-tightening spring 222, the pre-tightening cap 221 is rotatably connected to the first end of the driving rod 210, the pre-tightening spring 222 is sleeved on the periphery of the driving rod 210, and two ends of the pre-tightening spring are respectively abutted to the pre-tightening cap 221 and the rotary guiding assembly. Preferably, the pre-tightening cap 221 is in threaded connection with the driving rod 210, the pre-tightening cap 221 is provided with an internal thread, and an external thread matched with the internal thread of the pre-tightening cap 221 is arranged at a position, close to the end, of the first end of the driving rod 210, so as to realize the rotary connection between the pre-tightening cap 221 and the driving rod 210.
It can be appreciated that by rotating the pre-tightening cap 221 to make the pre-tightening cap 221 perform axial reciprocating motion relative to the driving rod 210, and further driving the pre-tightening spring 222 to stretch out and draw back by the pre-tightening cap 221, the pre-tightening height of the pre-tightening spring 222 is adjusted to provide self-tightening force for the grinding process of the valve seat sealing surface, so that the problem that the self-grinding of the downstream valve seat sealing surfaces 390 of the three valve cavities 340 of the deep water production tree body 300AMV annulus main valve 310, the AAV annulus inlet valve 320 and the PMV production main valve 330 cannot be realized due to the fact that the pre-tightening force cannot be provided in the prior art is solved.
In some embodiments of the present invention, the grinding assembly 230 is mounted circumferentially around the second end, and the grinding assembly 230 is capable of frictionally engaging the valve seat sealing surface, such that rotational movement of the drive rod 210 causes the grinding assembly 230 to grind the valve seat sealing surface.
Optionally, as shown in fig. 6, the grinding assembly 230 includes a supporting member 231 and a grinding member 232, wherein the outer diameter of the supporting member 231 is matched with the inner diameter of the second end, and the supporting member plays a role of mechanical support during grinding; the two sides of the supporting member 231 are provided with grinding members 232, for example, sand paper, and the grinding surfaces of the grinding members 232 face the valve seat sealing surface to be ground, and the rotation of the driving rod 210 drives the grinding members 232 to grind the valve seat sealing surface.
Optionally, the grinding assembly 230 further includes a buffer member 233, where an inner hole of the buffer member 233 is matched with an outer diameter of the driving rod 210 to achieve positioning, and the buffer member 233 is disposed between the supporting member 231 and the grinding member 232, that is, the upper and lower sides of the supporting member 231 are sequentially provided with the buffer member 233 and the grinding member 232.
It can be appreciated that the buffer member 233 is made of a material with a certain elasticity, such as felt, and is used for flexibly supporting the grinding member 232, so as to ensure that the front surface of the grinding member 232 precisely fits with the upstream metal sealing surface of the valve seat and the downstream metal sealing surface of the valve seat in the grinding process, thereby improving the grinding precision and preventing the sealing surface of the valve seat from being damaged.
Optionally, the grinding assembly 230 further includes a fixing member, and a side of each grinding member 232 remote from the supporting member 231 is provided with the fixing member, and the fixing member is installed around the circumference of the driving rod 210.
Specifically, the fixing piece arranged at one side far away from the second end of the driving rod 210 is a gasket 234, an inner hole of the gasket 234 is matched and positioned with the outer diameter of the driving rod 210, the top of the gasket 234 is matched and limited with the end surface step of the driving rod 210, and the bottom of the gasket 234 is matched with the surface of the grinding piece 232 to compress the grinding piece 232.
The mounting that is close to one side of the second end of actuating lever 210 set up is clamp plate 235 and lock nut 236, and clamp plate 235's top and grinding member 232 surface cooperation, bottom and lock nut 236's terminal surface cooperation, through rotatory lock nut 236 compress tightly clamp plate 235 to grinding member 232, prevent grinding member 232 from taking place not hard up.
It will be appreciated that the second end of the driving rod 210 is provided with an external thread near the end, and the lock nut 236 is rotated and fixed by a wrench, so as to compress and fix the supporting member 231, the buffer member 233, the grinding member 232, the fixing member, etc., so as to prevent the grinding assembly 230 from loosening during the grinding process and damaging the sealing surface of the valve seat.
In some embodiments of the present invention, the rotating shaft sleeve 240 is rotatably connected with the driving rod 210, the rotating shaft sleeve 240 is driven to rotate by the rotation of the driving rod 210, and the driving rod 210 can axially reciprocate in the rotating shaft sleeve 240 through the guide assembly; the rotating shaft sleeve 240 is disposed between the pre-tightening assembly and the grinding assembly 230, and the pre-tightening assembly abuts against the end of the rotating shaft sleeve 240.
Optionally, the guiding assembly includes guiding grooves 251 and guiding keys 252, the guiding grooves 251 are symmetrically and penetratingly arranged at the inner side of the rotating shaft sleeve 240, and at least one group of guiding grooves 251 are arranged; the driving rod 210 is provided with a limit groove corresponding to the guide groove 251, one side of the guide key 252 is installed in the limit groove, and the other side is abutted against the guide groove 251.
It can be appreciated that the guide groove 251 cooperates with at least two guide keys 252 to transmit the driving force of the driving rod 210 to the rotating shaft sleeve 240, and the driving rod 210 drives the rotating shaft sleeve 240 to perform circumferential rotation to perform grinding action, and simultaneously, the driving rod 210 performs axial reciprocating motion in the rotating shaft sleeve 240 and the rotating process drives the rotating shaft sleeve 240 to perform circumferential rotation.
In some embodiments of the present disclosure, the polishing assembly 200 further includes a first centering component, where the first centering component includes a fixed sleeve 261 and a mating member 262, the fixed sleeve 261 is disposed around the outer side of the rotating sleeve 240, a mounting groove is formed on an outer sidewall of the fixed sleeve 261, the mating member 262 is mounted in the mounting groove, and the mating member 262 is capable of interference fit with the valve cavity 340 of the tree body 300.
It can be appreciated that the first centering component may be provided with one or more groups, the mounting groove may be formed in an annular shape on the outer side of the fixed sleeve 261, and the corresponding fitting member 262 is an annular member, so that the annular member is in interference fit with each valve cavity 340 channel of the tree body 300 of the tree through size design, and the first centering of the grinding device is realized, so that the damage of the sealing surface of the valve seat caused by eccentric grinding of the grinding device in the early grinding process is prevented.
Preferably, the grinding assembly 200 further includes a second centering component, where the second centering component includes a bearing 271 and a clamp spring 272, two ends of the bearing 271 are respectively installed on the rotating shaft sleeve 240 and the fixed sleeve 261, one end of the clamp spring 272 is installed on the fixed sleeve 261, and the other end of the clamp spring 272 abuts against the outer side of the bearing 271, so as to fix the bearing 271 and prevent the bearing 271 from desulfurizing during the rotating process.
Specifically, the inner side of the fixed sleeve 261 is provided with a bearing 271 mounting groove which is fitted with the outer diameter of the outer ring of the bearing 271 for fixing the bearing 271. And a snap spring 272 mounting groove matched with the snap spring 272 is formed in the inner side of the fixed sleeve 261 and used for mounting the snap spring 272; the outside of the rotating shaft sleeve 240 is provided with a bearing 271 mounting groove matched with the inner diameter of the inner ring of the bearing 271, and the bearing 271 mounting groove matched with the fixed sleeve 261 realizes the fixation of the bearing 271, and the rotating shaft sleeve 240 rotates in the fixed sleeve 261 to play a second centralizing role, so that the damage of the valve seat sealing surface in the early grinding process caused by the eccentric grinding of the grinding device is further prevented.
The first centralizing component and the second centralizing component are matched, so that the inclined valve seat sealing surface grinding device can be ensured to centralize well, the inclined state of the grinding disc provides uniform pretightening force, fine grinding of the inclined valve seat sealing surface is finished, and the problem that a common tool cannot perform inclined grinding or the inclined valve seat sealing surface is damaged by grinding is solved.
In some embodiments of the present invention, the polishing assembly 200 further includes a flange 280, the flange 280 is in threaded connection with the fixed sleeve 261, the internal thread of the flange 280 is specifically matched with the external thread of the fixed sleeve 261 near one end of the pre-tightening assembly, the flange 280 is provided with a plurality of bolt holes, the flange 280 is fixed on the support 400 by the flange bolts 281, the fixed connection of the polishing assembly 200 and the support 400 is realized by rotating the flange 280, the polishing effect is prevented from being influenced by loosening in the polishing process, and the adjustment of the polishing depth can be realized by rotating the flange 280, so as to polish the sealing surfaces of the valve seats with different depths and positions.
The working principle of the deep water christmas tree valve seat sealing surface grinding device of the present invention for grinding the upstream valve seat sealing surface 380 and the downstream valve seat sealing surface 390 is as follows:
Before grinding the valve seat sealing surface, the locking nut 236 of the grinding assembly 230 is screwed to fix the grinding piece 232, the grinding assembly 200 is installed in the designated valve cavity 340, then the pretension spring 222 is compressed by rotating the pretension cap 221 to generate the pretension force required by grinding the downstream valve seat sealing surface 390, meanwhile, the grinding piece 232 is excited to be precisely attached to the downstream valve seat sealing surface 390, then the output shaft of the driving motor 110 drives the driving rod 210 through the conversion sleeve 120, the grinding assembly 230 rotates and grinds the downstream valve seat sealing surface 390, and the pre-pressing height of the pretension spring 222 can be adjusted by adjusting the matching length of threads between the pretension cap 221 and the driving rod 210, so that the grinding pretension force is adjusted, and the self-pretension grinding of the downstream valve seat sealing surface 390 is completed.
After finishing grinding the downstream metal sealing surface of the valve seat, removing the pre-tightening spring 222 and the pre-tightening cap 221 to release the pre-tightening force of the spring, directly operating the operating handle 150 of the driving assembly 100 to push the driving motor 110 and the grinding assembly 230 to move downwards along the second guide rail 140, push the driving rod 210 and the guide key 252 to move downwards along the guide groove 251 penetrating through the inside of the rotating shaft sleeve 240, push the grinding assembly 230 to move downwards until in soft contact with the upstream valve seat sealing surface 380, provide the pre-tightening force for grinding the upstream valve seat sealing surface 380 through the operating handle 150, and then drive the rotating handle 120 to rotate by the output shaft of the driving motor 110 to drive the driving rod 210 and the grinding assembly 230 to rotationally grind the upstream valve seat sealing surface 380, thereby finishing self-pre-tightening grinding of the upstream valve seat sealing surface 380.
Specifically, the principle of simultaneous grinding of the upstream and downstream metal sealing surfaces of the inclined valve seat of the AMV annulus main valve 310 is as follows: the method comprises the steps of firstly installing a support 400 with the same inclination angle as the sealing surface of the AMV valve seat to the annular side of the deep-water christmas tree body 300, fixing the support 400 to the annular side of the deep-water christmas tree body 300 through mounting bolts and nuts, then installing a grinding assembly 200 to the sealing surface of the AMV valve seat and into a valve channel 350, fixing the grinding assembly 200 to the support 400 through screwing a flange bolt 281, continuing to install a driving assembly 100 to the support 400 and connecting a conversion sleeve 120 to the top of a driving rod 210, and driving the driving rod 210 and the grinding assembly 230 to rotate through rotation of a driving motor 110 so as to bidirectionally grind the sealing surfaces 390 of the upstream and downstream valve seats of the AMV.
Principle of simultaneous grinding of upstream and downstream metal sealing surfaces of an AAV annular main valve inclined valve seat: the method comprises the steps of firstly installing a support 400 with the same inclination angle as an AAV valve seat sealing surface to the annular side of the deep-water tree body 300, fixing the support 400 to the annular side of the deep-water tree body 300 through mounting bolts and nuts, then installing a grinding assembly 200 to the AAV valve seat sealing surface and a valve channel 350, fixing the grinding assembly 200 to the support 400 through tightening a flange bolt 281, continuing to install a driving assembly 100 to the support 400 and connecting a conversion sleeve 120 to the top of a driving rod 210, and rotating the driving rod 210 and the grinding assembly 230 through rotation of the driving motor 110 so as to bidirectionally grind the AAV upstream and downstream valve seat sealing surfaces 390.
Principle of PMV production of simultaneous grinding of metal sealing surfaces upstream and downstream of the inclined valve seat of the main valve 330: the method comprises the steps of firstly installing a support 400 with the same inclination angle as a PMV to the production side of the deep-water christmas tree body 300, fixing the support 400 to the production side of the deep-water christmas tree body 300 through installation bolts and nuts, then installing a grinding assembly 200 to the PMV valve seat sealing surface and the valve channel 350, fixing the grinding assembly 200 to the support 400 through tightening a flange bolt 281, continuing installing a driving assembly 100 to the support 400 and connecting a conversion sleeve 120 to the top of a driving rod 210, and rotationally driving the driving and grinding assembly 230 through a driving motor 110 to bidirectionally grind metal of the upstream and downstream valve seat sealing surfaces 390 of the PMV.
In summary, the grinding device for the valve seat sealing surface of the deep water christmas tree is of a bidirectional grinding piece design, can grind the downstream metal sealing surface of the valve seat, and can grind the upstream valve seat sealing surface by manually adjusting the grinding piece to move the grinding piece up and down through the operating handle of the driving assembly, so that one grinding piece can grind the upstream valve seat sealing surface and the downstream valve seat sealing surface simultaneously, the sealing reliability of the deep water christmas tree valve is improved, and the leakage risk of a medium in a well is prevented.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (6)
1. The utility model provides a deep water christmas tree disk seat sealing face grinder, its characterized in that, including drive assembly and grinding assembly, drive assembly can be fixed in the christmas tree body, the grinding assembly includes:
the driving rod comprises a first end and a second end, the end part of the first end is in transmission connection with the driving assembly, and the second end can be installed in the valve cavity of the tree body;
A pretension assembly mounted circumferentially around the first end, the pretension assembly being capable of reciprocating along an axial direction of the drive rod;
A grinding assembly mounted circumferentially about the second end, the grinding assembly being frictionally connectable to the valve seat sealing surface;
the rotating shaft sleeve is rotationally connected with the driving rod, and the driving rod can axially reciprocate in the rotating shaft sleeve through the guide assembly; the rotating shaft is sleeved between the pre-tightening assembly and the grinding assembly, and the pre-tightening assembly is abutted to the end part of the rotating shaft sleeve;
the pre-tightening assembly comprises a pre-tightening cap and a pre-tightening spring, the pre-tightening cap is rotatably connected to the first end, and two ends of the pre-tightening spring are respectively abutted to the pre-tightening cap and the rotary guide assembly;
The grinding assembly comprises a supporting piece, a grinding piece and a buffer piece, wherein the supporting piece is connected with the second end in a circumferential fit manner, the two sides of the supporting piece are respectively provided with the grinding piece, the grinding surface of the grinding piece faces to a valve seat sealing surface to be ground, and the buffer piece is arranged between the supporting piece and the grinding piece;
the guide assembly comprises guide grooves and guide keys, the guide grooves are symmetrically and penetratingly arranged on the inner side of the rotary shaft sleeve, and at least one group of guide grooves are arranged; the driving rod is provided with a limiting groove corresponding to the guide groove, one side of the guide key is installed in the limiting groove, and the other side of the guide key is abutted to the guide groove.
2. The deepwater tree valve seat sealing surface grinding device according to claim 1, wherein the grinding assembly further comprises fixing pieces, each of the grinding pieces is provided with the fixing piece on one side away from the supporting piece, and the fixing pieces are installed around the circumference of the driving rod.
3. The deepwater christmas tree valve seat sealing surface grinding device of claim 1, wherein the grinding assembly further comprises a first centralizer assembly comprising:
The fixed sleeve is arranged on the outer side of the rotary shaft sleeve in a surrounding mode, and an installation groove is formed in the outer side wall of the fixed sleeve;
The fixing piece is installed in the installation groove and can be in interference fit with the valve cavity of the tree body of the christmas tree.
4. A deep water tree valve seat sealing face grinding apparatus in accordance with claim 3, wherein said grinding assembly further comprises a second centralizing assembly, said second centralizing assembly comprising:
the two ends of the bearing are respectively arranged on the rotary shaft sleeve and the fixed sleeve;
And one end of the clamping spring is arranged on the fixed sleeve, and the other end of the clamping spring is abutted to the outer side of the bearing.
5. The deepwater christmas tree valve seat sealing surface grinding device according to claim 1, wherein the drive assembly comprises:
The driving motor is provided with a first guide rail at one side;
one end of the conversion sleeve is connected with the output shaft of the driving motor, and the other end of the conversion sleeve is connected with the first end of the driving rod so as to realize transmission connection between the driving motor and the driving rod;
the first guide rail is connected with the second guide rail in a sliding manner;
and the operating handle is connected with the driving motor, and the driving motor can reciprocate along the second guide rail by rotating the operating handle.
6. The deep water christmas tree valve seat sealing surface grinding device according to claim 5, further comprising a support, the support being mountable to a christmas tree body;
The drive assembly further comprises a base, the end portion of the second guide rail is abutted to the base, and the base can be mounted on the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410869133.6A CN118386077B (en) | 2024-07-01 | 2024-07-01 | Deep water christmas tree valve seat sealing surface grinding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410869133.6A CN118386077B (en) | 2024-07-01 | 2024-07-01 | Deep water christmas tree valve seat sealing surface grinding device |
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| Publication Number | Publication Date |
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| CN118386077A true CN118386077A (en) | 2024-07-26 |
| CN118386077B CN118386077B (en) | 2024-08-23 |
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| CN202410869133.6A Active CN118386077B (en) | 2024-07-01 | 2024-07-01 | Deep water christmas tree valve seat sealing surface grinding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB704359A (en) * | 1951-05-25 | 1954-02-17 | Sterling Metals Ltd | Improvements relating to the manufacture of sand and like cores for metal casting operations |
| CN2738944Y (en) * | 2004-11-11 | 2005-11-09 | 中国石化胜利油田有限公司孤岛采油厂 | Injection polymerization pump non-return valve grinder |
| CN106041715A (en) * | 2016-07-28 | 2016-10-26 | 成都成高阀门有限公司 | Valve body taper face grinding tool and grinding method |
| CN110450015A (en) * | 2019-09-10 | 2019-11-15 | 上海科科阀门集团有限公司 | A kind of butterfly valve seat grinding device |
| CN117140224A (en) * | 2023-10-27 | 2023-12-01 | 威飞海洋装备制造有限公司 | Grinding device for metal sealing surface in deep hole of Christmas tree body |
| CN220498670U (en) * | 2023-07-10 | 2024-02-20 | 辽宁石化阀门制造有限公司 | Inner cavity polishing device for valve machining |
-
2024
- 2024-07-01 CN CN202410869133.6A patent/CN118386077B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB704359A (en) * | 1951-05-25 | 1954-02-17 | Sterling Metals Ltd | Improvements relating to the manufacture of sand and like cores for metal casting operations |
| CN2738944Y (en) * | 2004-11-11 | 2005-11-09 | 中国石化胜利油田有限公司孤岛采油厂 | Injection polymerization pump non-return valve grinder |
| CN106041715A (en) * | 2016-07-28 | 2016-10-26 | 成都成高阀门有限公司 | Valve body taper face grinding tool and grinding method |
| CN110450015A (en) * | 2019-09-10 | 2019-11-15 | 上海科科阀门集团有限公司 | A kind of butterfly valve seat grinding device |
| CN220498670U (en) * | 2023-07-10 | 2024-02-20 | 辽宁石化阀门制造有限公司 | Inner cavity polishing device for valve machining |
| CN117140224A (en) * | 2023-10-27 | 2023-12-01 | 威飞海洋装备制造有限公司 | Grinding device for metal sealing surface in deep hole of Christmas tree body |
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|---|---|
| CN118386077B (en) | 2024-08-23 |
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