CN207177819U - Plug valve erecting device - Google Patents
Plug valve erecting device Download PDFInfo
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- CN207177819U CN207177819U CN201721099555.1U CN201721099555U CN207177819U CN 207177819 U CN207177819 U CN 207177819U CN 201721099555 U CN201721099555 U CN 201721099555U CN 207177819 U CN207177819 U CN 207177819U
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- leading screw
- erecting device
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Abstract
The utility model discloses a kind of plug valve erecting device, belong to petroleum well workover technical field.The plug valve erecting device includes fixation kit, vertically adjusts component, horizontal adjustment component and connection component, is connected by fixation kit with wellhead flange so that whole device is fixed on wellhead flange；The height of horizontal adjustment component and connection component in vertical direction is adjusted by vertically adjusting component, to adapt to the height of wellhead column；The distance of connection component in the horizontal direction is adjusted by horizontal adjustment component, to realize the centering with wellhead column.When blowout situation occurs, plug valve is opened, and installed in the upper end of connection component, by adjust the lower end of horizontal adjustment component and vertical adjustment component connection component and the centering of wellhead column and it is upper buckle, cut-out tap valve, you can realize the control to the inner chamber of wellhead column, solve during blowout, plug valve can not pressurize installation the problem of, reduce and rob spray difficulty, improve the efficiency for robbing spray.
Description
Technical field
The utility model belongs to petroleum well workover technical field, more particularly to a kind of plug valve erecting device.
Background technology
During oil well repairing operation, the factors such as well killing fluid leakage, the perfusion of pit shaft liquid level are not in time, strata pressure is abnormal
Easily cause pit shaft head of liquid can not equilibrium strata pressure, and then trigger overflow or blowout dangerous situation.At present, with oil field well control
Way to manage is updated, and using well-control equipments such as plug valves, is installed in the upper end of wellhead column, is passed through cut-out tap
Valve, it can effectively contain the generation of blowout event.
When overflow or blowout occur for operation field at present, the installation of tubing string plug valve mainly relies on manpower make-up and rotation
Turn, be installed in the upper end of wellhead column.
During the utility model is realized, designer has found that prior art at least has problems with：
When spillway discharge is larger or blowout, the impulsive force due to spraying liquid be much larger than manpower, and the impulsive force of liquid stream can be greatly
The actions such as the big centering for having influence on plug valve and tubing string, upper button, manpower, which is difficult to realize, successfully to be installed, meanwhile, during blowout
When manpower installs plug valve, because operational risk is big, the personal safety easily to operating personnel threatens.
Utility model content
In consideration of it, the utility model provides a kind of plug valve erecting device, during solving blowout, plug valve can not
The problem of pressurization installation.
A kind of plug valve erecting device, the device are arranged on well head, it is characterised in that described device includes fixed group
Part, component, horizontal adjustment component and connection component are vertically adjusted, wherein,
The fixation kit includes connected base and contiguous block, and the base is suitable to the method for being arranged on the wellhead flange
On blue disk, the contiguous block is arranged on the base, the contiguous block with it is described it is vertical adjustment component lower end movably
Be connected, the upper end of the vertical adjustment component is connected with the horizontal adjustment component, the opposite side of the horizontal adjustment component and
The connection component is connected；
The upper end of the connection component is suitable to be connected with plug valve, and the lower end of the connection component is suitable to and wellhead column phase
Even.
Further, the vertical adjustment component includes support, the first leading screw, support base and first handle, the support
Lower end be connected with the contiguous block, the upper end of the support is provided with the support base, and the lower end of first leading screw is set
On the support base, the upper end of first leading screw is provided with the first handle.
Further, the contiguous block opens up fluted, and the lower end of the support is plate body, and the plate body insertion is described recessed
Groove.
Further, the support base includes mounting cap and mounting covers, and the upper end of the support offers cavity, the extension
Female connector is embedded into the cavity, and is connected with the support, it is described mounting cap through it is described mounting set and with described first
Thick stick is connected.
Further, the vertical adjustment component also includes adapter sleeve and sliding block, and the adapter sleeve is set in the support
With on the first leading screw and first leading screw can be covered, the side of the support offers guide groove, and the sliding block can go up downslide
It is arranged on dynamicly between the adapter sleeve and the guide groove.
Further, first leading screw includes screw rod, and the inside screw is hollow, and the upper end of the mounting cap penetrates institute
State the lower end of screw rod and be connected with the screw rod.
Further, the horizontal adjustment component includes the second leading screw, second handle, rotary sleeve, the 4th back of the body cap and connection
Pipe, the rotary sleeve are set on the adapter sleeve, and one end of second leading screw is arranged on the side of the rotary sleeve, described
Second leading screw and the connecting tube are set in the 4th back of the body cap relatively, and the second handle is arranged on the 4th back of the body cap outer wall
On.
Further, the horizontal adjustment component also includes connected rotary sleeve and the 3rd handle, and the 3rd handle is set
Put in the side of the rotary sleeve, and it is relative with second leading screw.
Further, the connection component includes connector, the connector inner hollow, and the side of the connector
It is connected with the side of the connecting tube.
The beneficial effect of technical scheme that the utility model embodiment provides is：
The plug valve erecting device of the utility model embodiment, is connected with wellhead flange by the base of fixation kit, made
Whole device is obtained to be fixed on wellhead flange；By being movably connected for the contiguous block of fixation kit and vertical adjustment component,
So that device can not only realize the installation function of plug valve, and can without the use of when be affiliated to by well head；By hanging down
The height of the straight adjustment of adjustment component horizontal adjustment component and connection component in vertical direction, to adapt to the height of wellhead column；
The distance of connection component in the horizontal direction is adjusted by horizontal adjustment component, to realize the centering with wellhead column.When blowout feelings
When condition occurs, plug valve is opened, and installed in the upper end of connection component, by adjusting horizontal adjustment component and vertical adjustment group
Part causes the lower end of connection component and the centering of wellhead column and upper button, cut-out tap valve, you can realizes in wellhead column
The control of chamber, is solved during blowout, plug valve can not pressurize installation the problem of, reduce and rob spray difficulty, improve and rob
The efficiency of spray.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation that spray erecting device is robbed in a kind of cock that the utility model embodiment provides；
Fig. 2 is the positive structure diagram of fixation kit in Fig. 1；
Fig. 3 is the overlooking the structure diagram of fixation kit in Fig. 1；
Fig. 4 is the structural representation of vertical adjustment component in Fig. 1；
Fig. 5 is the structural representation of Fig. 1 reclaimed water Heibei provincial opera whole group parts；
Fig. 6 is the structural representation of connection component in Fig. 1.
Reference in figure represents respectively：
1st, fixation kit；
101st, base；
1011st, flange connecting hole；
102nd, contiguous block；
103rd, the first fixing bolt；
104th, the second fixing bolt；
2nd, component is vertically adjusted；
201st, support；
2011st, plate body；
202nd, the first leading screw；
2021st, the first screw rod；
2022nd, the first nut；
203rd, support base；
2031st, cap is mounted；
2032nd, mounting set；
204th, first handle；
205th, adapter sleeve；
206th, sliding block；
207th, the first anti-abrasion pad；
208th, the second anti-abrasion pad；
209th, the first back of the body cap；
210th, the second back of the body cap；
211st, the 3rd back of the body cap；
3rd, horizontal adjustment component；
301st, the second leading screw；
3011st, the second screw rod；
3012nd, stop pin；
302nd, second handle；
303rd, connecting tube；
304th, rotary sleeve；
305th, the 3rd handle；
306th, the 4th back of the body cap；
4th, connection component；
401st, connector；
402nd, the 5th back of the body cap；
403rd, the 3rd anti-abrasion pad.
Embodiment
To make the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with accompanying drawing
Mode is described in further detail.
The utility model embodiment provides a kind of plug valve erecting device, and its structural representation is as shown in figure 1, device bag
Include fixation kit 1, vertical adjustment component 2, horizontal adjustment component 3 and connection component 4.
Fixation kit 1 includes connected base 101 and contiguous block 102, and base 101 is suitable to the flange for being arranged on wellhead flange
On disk, as shown in Fig. 2 contiguous block 102 is arranged on base 101, contiguous block 102 may move with the lower end of vertical adjustment component 2
Ground is connected, and the horizontal adjustment component 3 of the vertical upper end for adjusting component 2 is connected, and the opposite side of horizontal adjustment component 3 is with being connected group
Part 4 is connected.
The upper end of connection component 4 is suitable to be connected with plug valve, and the lower end of connection component 4 is suitable to be connected with wellhead column.
It should be noted that plug valve is a kind of spherical rotary valve, by being rotated by 90 ° the passway that can make on valve plug
Communicate or separate with the passway on valve body, realize being turned on and off for valve.In oil-gas field development, by the way that plug valve is pacified
On wellhead column, when blowout occurs, cut-out tap valve, the generation of gas blowout accident can be effectively prevented.
Therefore, a kind of plug valve erecting device of the utility model embodiment using fixation kit 1, vertical adjustment component 2,
Horizontal adjustment component 3 and connection component 4, are connected so that whole device is fixed on uphole method by fixation kit 1 with wellhead flange
Lan Shang；Pass through the contiguous block of fixation kit 1 and being movably connected for vertical adjustment component 2 so that device can not only be realized
The installation function of plug valve, and can without the use of when be affiliated to by well head；By vertically adjusting, the adjustment of component 2 is horizontal to adjust
The height of whole group part 3 and connection component in vertical direction, to adapt to the height of wellhead column；Adjusted by horizontal adjustment component
The distance of connection component 4 in the horizontal direction, to realize the centering with wellhead column.When blowout situation occurs, plug valve is beaten
Open, and installed in the upper end of connection component 4, by adjusting horizontal adjustment component 3 and the vertical adjustment connection component 4 of component 2
Lower end and wellhead column centering and upper button, cut-out tap valve, you can realize the control to the inner chamber of wellhead column, solve
During blowout, plug valve can not pressurize installation the problem of, reduce and rob spray difficulty, improve the efficiency for robbing spray.
In order to which the function of plug valve erecting device is better achieved, respectively by fixation kit 1, vertical adjustment component 2, level
Adjustment component 3 and connection component 4 embody, specific as follows as shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6：
For fixation kit 1, base 101 and contiguous block 102 collectively form an entirety, as shown in figure 3, base
101 offer flange connecting hole 1011, by the way that flange connecting hole 1011 is relative with the through hole on wellhead flange or well head four-way,
It is fixed using bolt so that fixation kit 1 is arranged on well head.
Vertical adjustment component 2 includes support 201, the first leading screw 202, support base 203 and first handle 204, such as Fig. 3 institutes
Show, the lower end of support 201 is connected with contiguous block 102, and the upper end of support 201 is provided with support base 203, under the first leading screw 202
End is arranged on support base 203, and the upper end of the first leading screw 202 is provided with first handle 204, by rotating first handle 204, band
Dynamic first leading screw 202 rotation produces the displacement in vertical direction, to adapt to the height of wellhead column, meanwhile, well head spray gesture compared with
When big, make-up compression motion can also be securely achieved by rotating first handle 204, overcomes upper top caused by liquid splash
Power, be easy to plug valve robs spray installation.
It should be noted that contiguous block 102 opens up fluted, the lower end of support 201 is plate body 2011, and plate body 2011 inserts
Groove, as depicted in figs. 1 and 2, specifically, the position corresponding with plate body 2011 of contiguous block 102 offers two bolts hole, point
Not Wei the first bolt hole and the second bolt hole, wherein, the first spiro keyhole position is in the top of the second bolt hole, the first fixing bolt
103 are suitable to penetrate the first bolt hole, and the second fixing bolt 104 is suitable to penetrate the second bolt hole., can be only when without using device
Contiguous block 102 and plate body 2011 are fixed with the second fixing bolt 104, that is, ensure fixation kit 1 and the vertical adjustment phase of component 2
Even, then, vertical adjustment component 2 is rotated, single unit system can be suspended on to well head side, without prejudice to normal shaft mouth operation；
Device can be holded up, then penetrates by rotating vertical adjustment component 2, it is necessary to during use device during dangerous situation if blowout happens suddenly
First fixing bolt 103, single unit system is fixed on wellhead flange face.
Further, support base 203 includes mounting cap 2031 and mounting set 2032, as shown in figure 3, the upper end of support 201
For body, cavity is offered in body, mounting set 2032 is embedded into cavity, and mounting set 2032 is connected with support 201,
Connected mode can be threaded connection or screwed connection etc.；Mounting set 2032 covers for hollow mounting, and mounting cap 2031 can pass through
Impaling female connector 2032 and it is connected with the first leading screw 202, when the first leading screw 202 rotates, support base 203 is using mounting cap 2031
Play a part of support 201 with mounting set 2032 the first leading screw 202 will not rotate at any time.
It should be noted that the upper end that 2032 interior, mounting caps 2031 and mounting 2032 connecting places of set are covered in mounting is provided with
Second anti-abrasion pad 208, wherein, the second anti-abrasion pad 208, for protect support base 203 inside will not because of mounting set 2032 with
Mount the relative motion between cap 2031 and sustain damage.
In order to which the function of vertical adjustment component 2 is better achieved, the vertical component 2 that adjusts also includes adapter sleeve 205 and sliding block
206, adapter sleeve 205 is set on the leading screw 202 of support 201 and first and can cover the first leading screw 202, and the side of support 201 is opened
Provided with guide groove, sliding block 206, which can slide up and down to, to be arranged between adapter sleeve 205 and guide groove, and sliding block 206 can be in guide groove
Inside slide up and down, and by the 3rd back of the body cap 212 can sliding block 206 be fixed together with adapter sleeve 205, when the first leading screw
When 202 rotations drive the up and down motion of adapter sleeve 205, sliding block 206 can play a part of preventing adapter sleeve 205 from rotating.
Further, the first leading screw 202 includes the first screw rod 2021 and the first nut 2022, inside the first screw rod 2021
Hollow, because adapter sleeve 205 is hollow cylindrical body, the relative position of its upper end inside and outside wall is provided with boss-shaped step, will
First nut 2022 is embedded on the interior step on the top of adapter sleeve 205, and is consolidated itself and adapter sleeve 205 by the first back of the body cap 209
Fixed, the upper end of mounting cap 2032 penetrates the lower end of the first screw rod 2021 and is connected with the first screw rod 2021, and first handle 204 revolves
Turn to drive the first screw rod 2021 to rotate, gearing is produced between the first screw rod 2021 and the first nut 2022 and drives adapter sleeve
205 move up and down so that horizontal adjustment component 3 realizes movement in vertical direction.
Meanwhile vertical adjustment component 2 also includes the first anti-abrasion pad 207, the first anti-abrasion pad 207 is arranged on the first nut 2022
Between adapter sleeve 205, for protecting the first nut 2022 will not be by frictionally damage.
Horizontal adjustment component 3 includes the second leading screw 301, second handle 302, rotary sleeve 304, the 4th back of the body cap 306 and connection
Pipe 303, rotary sleeve 304 are set on adapter sleeve 205, as shown in figure 5, one end of the second leading screw 301 is arranged on rotary sleeve 304
Side, the second leading screw 301 and connecting tube 303 are relative to be set in the 4th back of the body cap 306, and second handle 302 is arranged on the 4th back of the body cap
On 306 outer walls.When second handle 302 rotates, the 4th back of the body cap 306 produces the displacement in horizontal direction along the second leading screw 301, enters
And connecting tube 303 is driven to produce movement in the horizontal direction.
Specifically, the second leading screw 301 includes the second screw rod 3011 and the 4th back of the body cap 306, and the 4th back of the body cap 306 is set in connection
On pipe 303, and it can use and be threadedly coupled with the second screw rod 3011, when rotating second handle 302, second handle 302 turns
It is dynamic to produce the motion in horizontal direction between the 4th back of the body cap 306 and the second screw rod 3011, and then drive connecting tube 303 to occur
Motion in horizontal direction.
It should be noted that connecting tube 303 is set in the 4th back of the body cap 306, one end of connecting tube 303 is provided with through hole, prevents
Ship and resell on another market and 3012 be inserted into through hole, and mutually fixed with the interior step of the 4th back of the body cap 306, prevent connecting tube 303 from producing rotation.
Horizontal adjustment component 3 also includes the connected handle 305 of rotary sleeve 304 and the 3rd, and the 3rd handle 305 is arranged on rotation
The side of set 304, and it is relative with the second leading screw 301, wherein, the 3rd handle 305 and rotary sleeve 205 form an overall structure,
For adjusting the position of horizontal adjustment component 3 in the horizontal direction, and then the realization device centering with well head in the horizontal plane, together
Shi Peihe rotation second handles 302 are finely adjusted to horizontal direction, it can be ensured that device aligns with wellhead column.
It should be noted that rotary sleeve 304 is set in the outer step of the upper end of adapter sleeve 205, and pass through the second back of the body cap
210 fix rotary sleeve 304 and adapter sleeve 205, as shown in Figure 4.
Connection component 4 includes connector 401, the inner hollow of connector 401, and the side of connector 401 and connecting tube 303
Side be connected so that connection component 4 is connected with horizontal adjustment component 3, when horizontal adjustment component 3 rotates, level adjust
Whole group part 3 can drive connection component 4 to rotate.
It should be noted that the upper and lower ends in connector 401 are provided with screw thread, the upper end of connector 401 passes through silk
Button is connected with plug valve, and the lower end of connector 401 is connected by screw thread with wellhead column, passes through connector 401 so that plug valve
Installed in the upper end of wellhead column.
In order to which the function of connection component 4 is better achieved, by being provided with shoulder in the lower end outside of connector 401, by
Three anti-abrasion pads 403 are arranged at the mouth of pipe of connecting tube 303, and are fixed using the 5th back of the body cap 402 so that the connector after installing
401 can realize rotation.
In the production of reality, plug valve is arranged on to the upper end of connector 401 first, then device together with plug valve one
Rise and be arranged on wellhead flange, ensure that plug valve is in open mode.
When overflow or blowout dangerous situation do not occur, only contiguous block 102 and plate body 2011 are consolidated with the second fixing bolt 104
It is fixed, that is, ensure that fixation kit 1 is connected with vertical adjustment component 2, then, rotate vertical adjustment component 2, single unit system can be hanged
Well head side is hung over, without prejudice to normal shaft mouth operation.
When overflow or blowout dangerous situation occurs, it is necessary to when using the plug valve erecting device of the utility model embodiment,
By rotating vertical adjustment component 2, device is holded up from the side of well head, then penetrates the first fixing bolt 103, by single unit system
It is fixed on wellhead flange face；The lower end screw thread lifting of connector 401 is arrived wellhead column screw thread plane by rotation first handle 204
More than, rotate the 3rd handle 305 so that the lower end of connector 401 aligns with wellhead column screw thread；After aligning, rotation is first-hand
Handle 204 makes the lower end screw thread of connector 401 be aligned with wellhead column screw thread, meanwhile, coordinate rotation second handle 302 to carry out level side
To fine setting, to ensure that connector 401 and wellhead column align；Continue to rotate first handle 204 so that adapter sleeve 205 is downward
Motion so that device pressurizes to tubing string, after connector 401 contacts with wellhead column screw thread, is rotatably connected using pipe wrench
First 401 upper end carries out make-up, meanwhile, it is next on thread, plug valve is closed, that is, realizes wellhead column inner chamber
Closing, while coordinate preventer to complete closing well, realize the safety of well control.
It is described above to be for only for ease of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc.,
It should be included within the scope of protection of the utility model.
Claims (9)
1. a kind of plug valve erecting device, the device are arranged on well head, it is characterised in that described device includes fixation kit
(1) component (2), horizontal adjustment component (3) and connection component (4), are vertically adjusted, wherein,
The fixation kit (1) includes connected base (101) and contiguous block (102), and the base (101) is suitable to be arranged on institute
State on the ring flange of wellhead flange, the contiguous block (102) is arranged on the base (101), the contiguous block (102) and institute
The lower end for stating vertical adjustment component (2) is movably connected, the upper end of the vertical adjustment component (2) with the horizontal adjustment
Component (3) is connected, and the opposite side of the horizontal adjustment component (3) is connected with the connection component (4)；
The upper end of the connection component (4) is suitable to be connected with plug valve, and the lower end of the connection component (4) is suitable to and wellhead column
It is connected.
2. plug valve erecting device according to claim 1, it is characterised in that the vertical adjustment component (2) includes branch
Frame (201), the first leading screw (202), support base (203) and first handle (204), lower end and the company of the support (201)
Connect block (102) to be connected, the upper end of the support (201) is provided with the support base (203), under first leading screw (202)
End is arranged on the support base (203), and the upper end of first leading screw (202) is provided with the first handle (204).
3. plug valve erecting device according to claim 2, it is characterised in that the contiguous block (102) open up it is fluted,
The lower end of the support (201) is plate body (2011), and the plate body (2011) inserts the groove.
4. plug valve erecting device according to claim 2, it is characterised in that the support base (203) includes mounting cap
(2031) and mounting set (2032), the upper end of the support (201) offer cavity, and the mounting set (2032) is embedded into described
In cavity, and it is connected with the support (201), the mounting cap (2031) covers (2032) and with described the through the mounting
One leading screw 202 is connected.
5. plug valve erecting device according to claim 4, it is characterised in that the vertical adjustment component (2) also includes
Adapter sleeve (205) and sliding block (206), the adapter sleeve (205) be set on the support (201) and the first leading screw (202) and
First leading screw (202) can be covered, the side of the support (201) offers guide groove, and the sliding block (206) can go up downslide
It is arranged on dynamicly between the adapter sleeve (205) and the guide groove.
6. plug valve erecting device according to claim 5, it is characterised in that first leading screw (202) includes first
Screw rod (2021), the first screw rod (2021) inner hollow, the upper end of the mounting cap (2031) penetrate first screw rod
(2021) lower end and it is connected with first screw rod (2021).
7. plug valve erecting device according to claim 6, it is characterised in that the horizontal adjustment component (3) includes the
Two leading screws (301), second handle (302), rotary sleeve (304), the 4th back of the body cap (306) and connecting tube (303), the rotary sleeve
(304) it is set on the adapter sleeve (205), one end of second leading screw (301) is arranged on the one of the rotary sleeve (304)
Side, second leading screw (301) and the connecting tube (303) are relative to be set in the 4th back of the body cap (306), the second-hand
Handle (302) is arranged on the outer wall of the 4th back of the body cap (306).
8. plug valve erecting device according to claim 7, it is characterised in that the horizontal adjustment component (3) also includes
Connected rotary sleeve (304) and the 3rd handle (305), the 3rd handle (305) are arranged on the one of the rotary sleeve (304)
Side, and it is relative with second leading screw (301).
9. plug valve erecting device according to claim 7, it is characterised in that the connection component (4) includes connector
(401), connector (401) inner hollow, and the side of the connector (401) and the side of the connecting tube (303)
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721099555.1U CN207177819U (en) | 2017-08-30 | 2017-08-30 | Plug valve erecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721099555.1U CN207177819U (en) | 2017-08-30 | 2017-08-30 | Plug valve erecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207177819U true CN207177819U (en) | 2018-04-03 |
Family
ID=61738588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721099555.1U Active CN207177819U (en) | 2017-08-30 | 2017-08-30 | Plug valve erecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207177819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424333A (en) * | 2017-08-30 | 2019-03-05 | 中国石油天然气股份有限公司 | Plug valve mounting device |
-
2017
- 2017-08-30 CN CN201721099555.1U patent/CN207177819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424333A (en) * | 2017-08-30 | 2019-03-05 | 中国石油天然气股份有限公司 | Plug valve mounting device |
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