CN204754868U - Emergency control valve - Google Patents
Emergency control valve Download PDFInfo
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- CN204754868U CN204754868U CN201520420996.1U CN201520420996U CN204754868U CN 204754868 U CN204754868 U CN 204754868U CN 201520420996 U CN201520420996 U CN 201520420996U CN 204754868 U CN204754868 U CN 204754868U
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Abstract
The utility model discloses an emergency control valve, include: go up the valve body subassembly, the valve body subassembly that is arranged in valve body subassembly below and is connected with last valve body subassembly, with the lower valve body subassembly that is arranged in valve body subassembly below and is connected with the valve body subassembly, wherein, it includes to go up the valve body subassembly: the communicating last valve body of going up fluid subchannel and piston chamber has, be used for connecting the joint of pipeline, seal installation is in the outer port department in piston chamber, the plunger is installed and is cooperateed with well valve body subassembly at piston intracavity and its the inner, from the both ends of plunger to a top section of thick bamboo, the first sealing washer at the middle part of plunger suit in proper order, keep off ring, spacer ring and spacing ring, and the spacing ring is fixed on the plunger. The utility model provides an emergency control valve, life that can liftout plunger upper seal integrated configuration, its practicality is showing.
Description
Technical field
The utility model relates to oil exploration equipment technical field, espespecially a kind of Safety control valve.
Background technology
For marine oil field exploitation and the requirement of safety and environmental protection, downhole safety control valve plays considerable effect in oil-gas mining process.When wellhead assembly is out of control, Oil/gas Well just can be closed automatically, thus avoids the generation of the serious accidents such as serious casualties, blowout and marine pollution.The oil pipe that current domestic sea uses in a large number carries downhole safety control valve that is recyclable, ground hydraulic control type, and Safety control valve all has self-balance structure.
But there is following shortcoming in the application in this kind of Safety control valve:
1, Safety control valve plunger seal mode adopts the integral seal combination of installing back-to-back.This structure is when bearing uniaxial pressure, and by pressure side seal combination because of pressure-bearing, general plug sealing ring is wherein very easy to be squeezed and destroy, thus causes plunger seal to lose efficacy, and Safety control valve can not be opened in time, the underground work that directly impact is follow-up.
2, the mandrel of valve plate is pushed in Safety control valve open owing to being subject to monolateral thrust, mandrel will bear certain moment of torsion, under the effect of moment of torsion, mandrel end wear can be caused, fit clearance is caused to become large, the particle that easily deposition is large in such cases, and there is the problem of meeting card in mandrel use procedure, finally cause the situation can not opening Safety control valve to occur.
3, valve plate and valve seat low pressure seal bad, be not closed completely.
4, Safety control valve self-balancing one is the structure adopting side to install " ball, spring ", and this structure spring easily lost efficacy, and finally made self-balancing mechanism inoperative; Another self-balance structure adopts the form of plunger, and this structural pressure equilibration time is long, and valve plate is opened slower.
Utility model content
In order in solving the problems of the technologies described above one of at least, the utility model provides a kind of Safety control valve, can application life of sealing combination structure on liftout plunger, and its practicality is remarkable.
In order to reach the utility model object, the utility model provides a kind of Safety control valve, comprising: upper valve body assembly; Be arranged in the valve component be connected below described upper valve body assembly and with described upper valve body assembly; Be arranged in the lower valve component be connected below described valve component and with described valve component; Wherein, described upper valve body assembly comprises: the upper valve body with upper fluid subchannel and the plunger shaft communicated; For the joint of connecting line, sealing is arranged on the external port place of described plunger shaft; Plunger, is arranged in described plunger shaft and its inner and matches with middle valve component; The top cylinder that middle part from from the two ends of described plunger to described plunger is set with successively, the first sealing ring, baffle ring, spacer ring and spacing ring, and spacing ring is fixed on described plunger, the location structure spacing described top cylinder at described plunger two ends place, the first sealing ring, baffle ring, spacer ring and spacing ring are on plunger.
Alternatively, described first sealing ring is general plug sealing ring, and the shaft shoulder that the inner of described plunger has, outer end are provided with hold-doun nut, and top cylinder, the first sealing ring, baffle ring, spacer ring and spacing ring are installed between the described shaft shoulder and described hold-doun nut; Wherein, the outer side surface of described plunger offers mounting groove, spacing ring is set with and is positioned at described mounting groove place, and is also provided with sleeve between spacing ring and spacer ring.
Alternatively, described middle valve component comprises: the middle valve body with middle fluid subchannel, and the lower end of its upper end and described upper valve body is tightly connected; Mandrel, is arranged in described middle fluid subchannel and its upper end is also stretched in described upper fluid subchannel; To be installed between described mandrel and described upper valve body and to connect the transmission ring of described mandrel and described plunger; And described mandrel and described between valve body and the wear-resistant sleeve be sleeved on described mandrel, described wear-resistant sleeve is fixed on described upper valve body.
Alternatively, described middle valve component also comprises: the 3rd elastic component between described mandrel and described middle valve body, the internal face of described middle valve body has the supine ledge structure of ladder, the lower end of described 3rd elastic component compresses described cascaded surface, upper end compresses described transmission ring; Wherein, the inner of described plunger shaft also communicates with described middle fluid subchannel.
Alternatively, described middle valve component also comprises: back-up ring, between the lower end being arranged on described 3rd elastic component and described cascaded surface; Wherein, described upper valve body is all fixedly connected with by screw with described mandrel with described wear-resistant sleeve, described transmission ring, and it is in mating connection that described plunger and described transmission ring pass through groove shaft shoulder structure.
Alternatively, described lower valve component comprises: the lower valve body with lower fluid subchannel, and its upper end is tightly connected mutually with the lower end of described middle valve body; Between described lower valve body and the lower end of described mandrel and the valve seat be sleeved on described mandrel, be fixed on described middle valve body; To be positioned at below described valve seat and the valve plate covered swingably on described valve seat, fixed end and the described valve seat of described valve plate are hinged; First elastic component, is arranged on the hinged place of described valve plate and described valve seat, for providing described valve plate twisting resistance; With to be positioned at below described valve plate and with described valve plate with the use of self-balance structure.
Alternatively, described self-balance structure comprises: be arranged on the balance tapered plug on described valve plate lower surface, and the upper end of described balance tapered plug is through described valve plate and just to the lower surface of described mandrel; With the second elastic component be arranged on described valve plate lower surface, be used in combination with described balance tapered plug, for providing described balance tapered plug to upward pressure.
Alternatively, described lower valve component also comprises: the second sealing ring, is arranged on the lower surface of described valve seat between described valve seat and described valve plate.
Alternatively, the interior sidewall surface of described middle valve body lower end has torque shoulder, and described valve seat is arranged in described torque shoulder.
Alternatively, described upper valve body is threaded with described lower valve body homogeneous phase with described middle valve body, described middle valve body; And the dead in line of described upper fluid subchannel, described middle fluid subchannel and described lower fluid subchannel.
The Safety control valve that the utility model provides, the top cylinder that middle part from from the two ends of plunger to plunger is set with successively, the first sealing ring, baffle ring, spacer ring and spacing ring, and spacing ring is fixed on plunger, its two group of first sealing ring is symmetrical arranged, plays simultaneously the effect of sealing, this kind of seal combination easily can not be destroyed because of back and forth bearing pressure, effectively improve the application life of sealing combination structure on plunger, solve the problem that plunger seal lost efficacy, ensure that carrying out smoothly of follow-up underground work.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from manual, or understand by implementing the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in manual, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide the further understanding to technical solutions of the utility model, and forms a part for manual, is used from explanation the technical solution of the utility model, does not form the restriction to technical solutions of the utility model with the embodiment one of the application.
Fig. 1 is the sectional structure schematic diagram of the Safety control valve of the utility model embodiment;
The partial structurtes schematic diagram that Fig. 2 to Fig. 4 is Safety control valve shown in Fig. 1;
Fig. 5 is the H-H sectional structure schematic diagram in Safety control valve shown in Fig. 1 and Fig. 4;
Fig. 6 is for the plunger in Safety control valve shown in Fig. 1 being installed the sectional structure schematic diagram after seal combination;
Fig. 7 for the lower valve body in Safety control valve shown in Fig. 1 assemble mutually with the second sealing ring after sectional structure schematic diagram.
Wherein, the corresponding relation in Fig. 1 to Fig. 7 between Reference numeral and component names is:
Fluid subchannel on 101,102 plunger shaft, valve body on 103,104 joints, 105 plungers, 106 top cylinders, 107 first sealing rings, 108 baffle rings, 109 spacer rings, 110 spacing rings, 111 hold-doun nuts, 112 sleeves, fluid subchannel in 201, valve body in 202,203 mandrels, 204 transmission rings, 205 wear-resistant sleeves, 206 the 3rd elastic components, 207 back-up rings, 301 times fluid subchannels, 302 times valve bodies, 303 valve seats, 304 valve plates, 305 first elastic components, 306 balance tapered plugs, 307 second elastic components, 308 second sealing rings.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, hereinafter will be described in detail to embodiment of the present utility model by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can be combined mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from mode described here to implement, and therefore, protection domain of the present utility model is not by the restriction of following public specific embodiment.
Below in conjunction with accompanying drawing, the Safety control valve described in some embodiments of the utility model is described.
The Safety control valve that the utility model provides, as shown in Figure 1, Figure 2 with shown in Fig. 6, comprising: upper valve body assembly; Be arranged in the valve component be connected below upper valve body assembly and with upper valve body assembly; Be arranged in the lower valve component be connected below valve component and with valve component; Wherein, upper valve body assembly comprises: the upper valve body 103 with upper fluid the subchannel 101 and plunger shaft 102 communicated; For the joint 104 of connecting line, sealing is arranged on the external port place of plunger shaft 102; Plunger 105, is arranged in plunger shaft 102 and its inner and matches with middle valve component; Top cylinder 106, first sealing ring 107, baffle ring 108, spacer ring 109 and spacing ring 110 that middle part from from the two ends of plunger 105 to plunger 105 is set with successively, and spacing ring 110 is fixed on plunger 105, location structure spacing top cylinder 106, first sealing ring 107 at plunger 105 two ends place, baffle ring 108, spacer ring 109 and spacing ring 110 are on plunger 105.
The Safety control valve that the utility model provides, the top cylinder that middle part from from the two ends of plunger to plunger is set with successively, the first sealing ring, baffle ring, spacer ring and spacing ring, and spacing ring is fixed on plunger, its two group of first sealing ring is symmetrical arranged, plays simultaneously the effect of sealing, this kind of seal combination easily can not be destroyed because of back and forth bearing pressure, effectively improve the application life of sealing combination structure on plunger, solve the problem that plunger seal lost efficacy, ensure that carrying out smoothly of follow-up underground work.
In addition, in the Safety control valve provided at the utility model above-described embodiment:
Preferably, as shown in Figure 6, first sealing ring 107 is general plug sealing ring, and the shaft shoulder that the inner of plunger 105 has, outer end are provided with hold-doun nut 111, and top cylinder 106, first sealing ring 107, baffle ring 108, spacer ring 109 and spacing ring 110 are installed between the shaft shoulder and hold-doun nut 111; Wherein, the outer side surface of plunger 105 offers mounting groove, spacing ring 110 is set with and is positioned at mounting groove place, and is also provided with sleeve 112 between spacing ring 110 and spacer ring 109.
Wherein, the cross section of spacing ring 110 is L-shaped, and sleeve 112 is sleeved on spacing ring 110 and the lateral surface of the lateral surface of sleeve 112 and spacing ring 110 is coplanar.
Certainly, may also be all to arrange sleeve 112 structure between spacing ring 110 and the spacer ring 109 of its both sides, can realize the object of the application yet, its aim does not depart from design philosophy of the present utility model, does not repeat them here, but should belong in the protection domain of the application.
In an embodiment of the present utility model, as shown in Figure 1, Figure 3, middle valve component comprises: the middle valve body 202 with middle fluid subchannel 201, and the lower end of its upper end and upper valve body 103 is tightly connected; Mandrel 203, is arranged in middle fluid subchannel 201 and its upper end is also stretched in fluid subchannel 101; To be installed between mandrel 203 and upper valve body 103 and the transmission ring 204 of connecting mandrel 203 and plunger 105; With between mandrel 203 and upper valve body 103 and the wear-resistant sleeve 205 be sleeved on mandrel 203, wear-resistant sleeve 205 is fixed on valve body 103.
Wear-resistant sleeve 205, for reducing the relative wear amount between upper valve body 103 and mandrel 203, this makes it possible to the application life promoting valve body 103 and mandrel 203, reduces the maintenance of Safety control valve or changes number of times.
In addition, as shown in Figure 3, middle valve component also comprises: the 3rd elastic component 206 between mandrel 203 and middle valve body 202, the internal face of middle valve body 202 has the supine ledge structure of ladder, and the lower end of the 3rd elastic component 206 compresses cascaded surface, upper end compresses transmission ring 204; Wherein, the inner of plunger shaft 102 also communicates with middle fluid subchannel 201.
Preferably, described 3rd elastic component is helical spring.
And as shown in Figure 3, middle valve component also comprises: back-up ring 207, between the lower end being arranged on the 3rd elastic component 206 and cascaded surface; Wherein, upper valve body 103 and wear-resistant sleeve 205, transmission ring 204 and mandrel 203 are all fixedly connected by the mode such as screw, welding, and it is in mating connection that plunger 105 and transmission ring 204 pass through groove shaft shoulder structure, interface arrangment etc.
Its groove shaft shoulder structure can relatively rotate, and avoid the rigid of transmission problem in plunger and mandrel power transmission process, its practicality is better.
In an embodiment of the present utility model, as shown in Figure 1 and Figure 4, lower valve component comprises: the lower valve body 302 with lower fluid subchannel 301, and its upper end is tightly connected mutually with the lower end of middle valve body 202; Between lower valve body 302 and the lower end of mandrel 203 and the valve seat 303 (as shown in Figure 7) be sleeved on mandrel 203, be fixed on middle valve body 202; To be positioned at below valve seat 303 and the valve plate 304 covered swingably on valve seat 303, fixed end and the valve seat 303 of valve plate 304 are hinged; First elastic component 305, is arranged on valve plate 304 with the hinged place of valve seat 303, for providing valve plate 304 twisting resistance; With to be positioned at below valve plate 304 and with valve plate 304 with the use of self-balance structure.
Wherein, as shown in Figure 6, self-balance structure comprises: be arranged on the balance tapered plug 306 on valve plate 304 lower surface, and the upper end of balance tapered plug 306 is through valve plate 304 and just to the lower surface of mandrel 203; With the second elastic component 307 be arranged on valve plate 304 lower surface, be used in combination with balance tapered plug 306, balance tapered plug 306 upward pressure for providing.
First elastic component 305 is torsion spring, and the second elastic component 307 is shell fragment, the lower surface that one end of shell fragment is fixed on valve plate, the other end compresses balance tapered plug, and the point upward of balance tapered plug stretches out valve plate.
Self-balance structure makes mandrel move down and balance after tapered plug contacts, the pressure at valve plate two ends is balanced, like this, in valve plate opening procedure, effectively can prevent a large amount of erosive wear of end face of mandrel, in the application life of effective lifting mandrel, the structure self regulation time simultaneously balancing tapered plug is short, and valve plate also can be made to open rapidly.
In addition, as shown in Fig. 4, Fig. 7, lower valve component also comprises: the second sealing ring 308, be arranged on the lower surface of valve seat 303 between valve seat 303 and valve plate 304, for promoting the sealing after valve plate covers on valve seat, that is: valve plate and valve seat is kept to have the sealing added under low-pressure state.
Preferably, the interior sidewall surface of middle valve body 202 lower end has torque shoulder, valve seat 303 to be arranged in torque shoulder and to rotate on torque shoulders, to promote its functional performance.
Preferably, upper valve body 103 is threaded with middle valve body 202, middle valve body 202 with lower valve body 302 homogeneous phase or is welded to connect.
Wherein, the dead in line of upper fluid subchannel 101, middle fluid subchannel 201 and lower fluid subchannel 301, and the hinged place of valve plate and valve seat is positioned at immediately below plunger.
The opening procedure of the Safety control valve that the utility model provides is as follows:
At well head place, pair pipeline be connected with joint pressurizes, and pressure enters plunger shaft, and it is descending to promote plunger; Time descending, descending power is applied on transmission ring, and is with moving mandrel descending, also compresses the 3rd elastic component simultaneously.When after the descending certain distance of mandrel, first the balance tapered plug promoted on valve plate moves, and what balance tapered plug opens the operting differential pressure that can balance on valve plate end face, is more conducive to opening of valve plate; Mandrel continues descending, and promote valve plate around valve seat to lower swing, until mandrel touches the stop surface in lower body, Safety control valve opening procedure terminates.
The closing process of the Safety control valve that the utility model provides is as follows:
At well head place to pipeline pressure release, under the effect of the 3rd elastic component, transmission ring band moving mandrel is up, also promotes plunger up simultaneously, makes mandrel and plunger return; And valve plate is under the effect of torsion spring, upwards swing on valve seat, make valve plate cover on the lower surface of valve seat, realize the sealing of Safety control valve.
In sum, the Safety control valve that the utility model provides, the top cylinder that middle part from from the two ends of plunger to plunger is set with successively, the first sealing ring, baffle ring, spacer ring and spacing ring, and spacing ring is fixed on plunger, its two group of first sealing ring is symmetrical arranged, plays simultaneously the effect of sealing, this kind of seal combination easily can not be destroyed because of back and forth bearing pressure, effectively improve the application life of sealing combination structure on plunger, solve the problem that plunger seal lost efficacy, ensure that carrying out smoothly of follow-up underground work.
In description of the present utility model, term " installation ", " being connected ", " connection ", " fixing " etc. all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the description of this manual, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although the embodiment disclosed by the utility model is as above, the embodiment that described content only adopts for ease of understanding the utility model, and be not used to limit the utility model.Those of skill in the art belonging to any the utility model; under the prerequisite not departing from the spirit and scope disclosed by the utility model; any amendment and change can be carried out in the form implemented and details; but scope of patent protection of the present utility model, the scope that still must define with appending claims is as the criterion.
Claims (10)
1. a Safety control valve, comprising: upper valve body assembly;
Be arranged in the valve component be connected below described upper valve body assembly and with described upper valve body assembly; With
Be arranged in the lower valve component be connected below described valve component and with described valve component; It is characterized in that, described upper valve body assembly comprises:
There is the upper valve body (103) of upper fluid subchannel (101) and the plunger shaft (102) communicated;
For the joint (104) of connecting line, sealing is arranged on the external port place of described plunger shaft (102);
Plunger (105), is arranged in described plunger shaft (102) and its inner and matches with middle valve component;
The top cylinder (106) that middle part from from the two ends of described plunger (105) to described plunger (105) is set with successively, the first sealing ring (107), baffle ring (108), spacer ring (109) and spacing ring (110), and spacing ring (110) is fixed on described plunger (105), location structure spacing described top cylinder (106) at described plunger (105) two ends place, the first sealing ring (107), baffle ring (108), spacer ring (109) and spacing ring (110) are on plunger (105).
2. Safety control valve according to claim 1, it is characterized in that, described first sealing ring (107) is general plug sealing ring, the shaft shoulder that the inner of described plunger (105) has, outer end are provided with hold-doun nut (111), and top cylinder (106), the first sealing ring (107), baffle ring (108), spacer ring (109) and spacing ring (110) are installed between the described shaft shoulder and described hold-doun nut (111);
Wherein, the outer side surface of described plunger (105) offers mounting groove, spacing ring (110) is set with and is positioned at described mounting groove place, and is also provided with sleeve (112) between spacing ring (110) and spacer ring (109).
3. Safety control valve according to claim 1, is characterized in that, described middle valve component comprises:
Have the middle valve body (202) of middle fluid subchannel (201), the lower end of its upper end and described upper valve body (103) is tightly connected;
Mandrel (203), is arranged in described middle fluid subchannel (201) and its upper end is also stretched in described upper fluid subchannel (101);
To be installed between described mandrel (203) and described upper valve body (103) and to connect the transmission ring (204) of described mandrel (203) and described plunger (105); With
To be positioned between described mandrel (203) and described upper valve body (103) and the wear-resistant sleeve (205) be sleeved on described mandrel (203), described wear-resistant sleeve (205) is fixed on described upper valve body (103).
4. Safety control valve according to claim 3, is characterized in that, described middle valve component also comprises:
Be arranged in the 3rd elastic component (206) between described mandrel (203) and described valve body (202), the internal face of described middle valve body (202) has the supine ledge structure of ladder, the lower end of described 3rd elastic component (206) compresses described cascaded surface, upper end compresses described transmission ring (204);
Wherein, the inner of described plunger shaft (102) also communicates with described middle fluid subchannel (201).
5. Safety control valve according to claim 4, is characterized in that, described middle valve component also comprises:
Back-up ring (207), between the lower end being arranged on described 3rd elastic component (206) and described cascaded surface;
Wherein, described upper valve body (103) is all fixedly connected with by screw with described mandrel (203) with described wear-resistant sleeve (205), described transmission ring (204), described plunger (105) and described transmission ring (204) in mating connection by groove shaft shoulder structure.
6. Safety control valve according to claim 3, is characterized in that, described lower valve component comprises:
Have the lower valve body (302) of lower fluid subchannel (301), its upper end is tightly connected mutually with the lower end of described middle valve body (202);
Between the lower end being positioned at described lower valve body (302) and described mandrel (203) and the valve seat (303) be sleeved on described mandrel (203), be fixed on described middle valve body (202);
Be positioned at described valve seat (303) below and the valve plate (304) covered swingably on described valve seat (303), fixed end and the described valve seat (303) of described valve plate (304) are hinged;
First elastic component (305), is arranged on described valve plate (304) with the hinged place of described valve seat (303), for providing described valve plate (304) twisting resistance; With
Be positioned at described valve plate (304) below and with described valve plate (304) with the use of self-balance structure.
7. Safety control valve according to claim 6, is characterized in that, described self-balance structure comprises:
Be arranged on the balance tapered plug (306) on described valve plate (304) lower surface, the upper end of described balance tapered plug (306) is through described valve plate (304) and just to the lower surface of described mandrel (203); With
Be arranged on the second elastic component (307) on described valve plate (304) lower surface, be used in combination with described balance tapered plug (306), for providing described balance tapered plug (306) to upward pressure.
8. Safety control valve according to claim 6, is characterized in that, described lower valve component also comprises:
Second sealing ring (308), to be positioned between described valve seat (303) and described valve plate (304) and to be arranged on the lower surface of described valve seat (303).
9. Safety control valve according to claim 6, is characterized in that, the interior sidewall surface of described middle valve body (202) lower end has torque shoulder, and described valve seat (303) is arranged in described torque shoulder.
10. Safety control valve according to claim 6, it is characterized in that, described upper valve body (103) is threaded with described lower valve body (302) homogeneous phase with described middle valve body (202), described middle valve body (202); And
The dead in line of described upper fluid subchannel (101), described middle fluid subchannel (201) and described lower fluid subchannel (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420996.1U CN204754868U (en) | 2015-06-17 | 2015-06-17 | Emergency control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420996.1U CN204754868U (en) | 2015-06-17 | 2015-06-17 | Emergency control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204754868U true CN204754868U (en) | 2015-11-11 |
Family
ID=54469587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520420996.1U Active CN204754868U (en) | 2015-06-17 | 2015-06-17 | Emergency control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204754868U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639980A (en) * | 2016-09-30 | 2017-05-10 | 中国海洋石油总公司 | Anti-pumping and anti-squeezing switch valve |
| CN110206509A (en) * | 2019-05-24 | 2019-09-06 | 中国地质科学院地质力学研究所 | A kind of water level differential pressure control valve |
| CN111927392A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Hydraulic control type switch sliding sleeve |
-
2015
- 2015-06-17 CN CN201520420996.1U patent/CN204754868U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639980A (en) * | 2016-09-30 | 2017-05-10 | 中国海洋石油总公司 | Anti-pumping and anti-squeezing switch valve |
| CN106639980B (en) * | 2016-09-30 | 2019-03-01 | 中国海洋石油集团有限公司 | It is a kind of it is anti-take out, anti-extrusion switch valve |
| CN110206509A (en) * | 2019-05-24 | 2019-09-06 | 中国地质科学院地质力学研究所 | A kind of water level differential pressure control valve |
| CN110206509B (en) * | 2019-05-24 | 2022-05-27 | 中国地质科学院地质力学研究所 | Water level differential pressure control valve |
| CN111927392A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Hydraulic control type switch sliding sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
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