CN112628426A - Check valve for petroleum and natural gas drilling - Google Patents
Check valve for petroleum and natural gas drilling Download PDFInfo
- Publication number
- CN112628426A CN112628426A CN202011548779.2A CN202011548779A CN112628426A CN 112628426 A CN112628426 A CN 112628426A CN 202011548779 A CN202011548779 A CN 202011548779A CN 112628426 A CN112628426 A CN 112628426A
- Authority
- CN
- China
- Prior art keywords
- valve
- fixedly connected
- gas drilling
- oil
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/105—Three-way check or safety valves with two or more closure members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a check valve for petroleum and natural gas drilling, which comprises a valve body, wherein a discharge hole is formed in one side of the valve body, a right connecting block positioned in the valve body is arranged on one side of the discharge hole, one end of the right connecting block is fixedly connected with a right connecting seat, the upper side and the lower side of the valve body are both fixedly connected with fixing plates, and sliding grooves are formed in the fixing plates. This a check valve for oil, natural gas drilling, through setting up the valve opening device, left valve plate and right valve plate, left side connecting seat constitutes the first layer valve with left valve plate, right side connecting seat constitutes the second floor valve with right valve plate, through setting up the valve opening device, the second floor valve is closed when realizing that the first layer valve is opened, the first layer valve is closed when the second floor valve is opened, so relapse, moreover, the steam generator is simple in structure, it is sealed effectual, do benefit to solve oil on the existing market, the problem below the check valve that natural gas drilling used exists is that the serious oil leak gas leakage of valve body wearing and tearing, sealed effect is not good enough, be difficult to carry out the problem of effectual non return.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a check valve for petroleum and natural gas drilling.
Background
In oil and gas drilling, blowout is an accident that people are not willing to see on any drilling machine because it endangers the life of drilling crew, can damage the drilling machine, and pollutes the environment, and usually fluid or gas is ejected from the well with great force, especially when the fluid is gas, the fluid often becomes a firework-bustling surface, the fluid causing the accident comes from underground rock, the pressure of the fluid is abnormally high and higher than normal, oil and gas drilling needs a check valve, and the check valve is a valve of which the opening and closing part is a circular valve clack and acts by the self weight and the medium pressure to block the medium backflow. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved. The disadvantage is that the resistance is high and the tightness is poor when closed, and the check valve can also be used to supply lines where the pressure may rise to an auxiliary system that exceeds the system pressure. The check valves may be largely classified into swing check valves (rotating about the center of gravity) and lift check valves (moving along an axis).
The check valve for petroleum and natural gas drilling in the current market has the following problems that the valve body is seriously abraded, oil leakage and air leakage are caused, the sealing effect is poor, and effective check action is difficult to perform.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a check valve for petroleum and natural gas drilling, which solves the problems that the existing check valve for petroleum and natural gas drilling in the market has serious valve body abrasion, oil leakage and air leakage, poor sealing effect and difficult effective check.
In order to achieve the purpose, the invention provides the following technical scheme: a check valve for petroleum and natural gas drilling comprises a valve body, wherein a discharge port is formed in one side of the valve body, a right connecting block positioned in the valve body is arranged on one side of the discharge port, a right connecting seat is fixedly connected to one end of the right connecting block, fixing plates are fixedly connected to the upper side and the lower side of the valve body, a sliding groove is formed in each fixing plate, a right pulley and a left pulley are slidably connected to the inner portion of the sliding groove, a main connecting rod is fixedly connected to one end, away from the sliding groove, of the right pulley, a right valve plate is fixedly connected to one end of the main connecting rod, an adjusting spring and a telescopic sleeve rod are sequentially arranged on one side of the right valve plate from top to bottom, a left valve plate is fixedly connected to one end, away from the right valve plate, of the left valve plate, the left connecting block is fixedly connected to the upper end and the lower end of the left connecting seat, a valve opening device is arranged on one side of the left connecting block, and a feeding hole is formed in the other side of the valve body.
As a preferable technical solution of the present invention, the valve opening device includes a rotating shaft, an eccentric wheel is fixedly connected to the rotating shaft, and a fixing rod is movably connected to an outer side of the eccentric wheel.
As a preferred technical scheme of the invention, one side of the fixed rod is fixedly connected with a movable rod, the movable rod is movably connected with a left connecting block, and a telescopic spring positioned on the surface of the movable rod is sleeved between the fixed rod and the left connecting block.
As a preferable technical scheme of the invention, one end of the movable rod, which is far away from the fixed rod, is fixedly connected with a push plate.
As a preferable technical scheme of the invention, one end of the rotating shaft, which is far away from the eccentric wheel, is fixedly connected with a conical gear, the conical gear comprises a driving wheel and a driven wheel, one side of the driven wheel is engaged with the driving wheel, and one side of the driving wheel is fixedly connected with an output shaft of a motor.
As a preferred technical scheme, grooves are formed in one side of each of the right connecting seat and the left connecting seat.
As a preferable technical scheme of the invention, one side of each of the left valve plate and the right valve plate is fixedly connected with a sealing piece.
As a preferred technical scheme of the invention, one end of the auxiliary connecting rod, which is far away from the left valve plate, is fixedly connected with a left pulley.
As a preferred technical scheme of the invention, the left connecting block is provided with a through hole matched with the movable rod, and the movable rod penetrates through the through hole.
Compared with the prior art, the invention provides the check valve for petroleum and natural gas drilling, which has the following beneficial effects:
1. this a check valve for oil, natural gas drilling, through setting up the valve opening device, left valve plate and right valve plate, left side connecting seat constitutes the first layer valve with left valve plate, right side connecting seat constitutes the second floor valve with right valve plate, through setting up the valve opening device, the second floor valve is closed when realizing that the first layer valve is opened, the first floor valve is closed when the second floor valve is opened, so relapse, moreover, the steam generator is simple in structure, it is sealed effectual, do benefit to solve oil on the existing market, the problem below the check valve that natural gas drilling was used exists is that the serious oil leak gas leakage of valve body wearing and tearing, sealed effect is not good enough, be difficult to carry out the problem of effectual non return, the usability that should be used for oil, natural gas.
2. This a check valve for oil, natural gas drilling through setting up left connecting seat, left valve plate, right connecting seat and right valve plate, because this a check valve for oil, natural gas drilling is stably carried, effectively improves check valve work efficiency to this a check valve for oil, natural gas drilling's usability has been improved greatly.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic view of a check structure for oil and gas drilling according to the present invention;
FIG. 2 is a partially enlarged view of portion A of FIG. 1 illustrating a non-return valve for oil and gas drilling according to the present invention;
FIG. 3 is a schematic structural view of a check valve device for oil and gas drilling according to the present invention;
FIG. 4 is a schematic side view of the eccentric check wheel for oil and gas drilling of the present invention.
In the figure: 1 valve body, 2 discharge ports, 3 right connecting blocks, 4 right connecting blocks, 5 fixing plates, 6 sliding grooves, 7 right pulleys, 8 left pulleys, 9 main connecting rods, 10 right valve plates, 11 sealing pieces, 12 adjusting springs, 13 telescopic sleeve rods, 14 left valve plates, 15 auxiliary connecting rods, 16 left connecting blocks, 17 left connecting blocks, 18 feed ports, 19 valve opening devices, 191 rotating shafts, 1911 conical gears, 1912 motors, 192 eccentric wheels, 193 fixing rods, 194 movable rods, 195 telescopic springs and 196 push plates.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-4, a check valve for oil and gas drilling comprises a valve body 1, a discharge port 2 is formed at one side of the valve body 1, a right connecting block 3 positioned inside the valve body 1 is arranged at one side of the discharge port 2, a right connecting seat 4 is fixedly connected to one end of the right connecting block 3, fixing plates 5 are fixedly connected to the upper and lower sides of the valve body 1, a chute 6 is formed in each fixing plate 5, a right pulley 7 and a left pulley 8 are slidably connected to the inside of the chute 6, a main connecting rod 9 is fixedly connected to one end of the right pulley 7 far away from the chute 6, a right valve plate 10 is fixedly connected to one end of the main connecting rod 9, an adjusting spring 12 and a telescopic sleeve rod 13 are sequentially arranged from top to bottom at one side of the right valve plate 10, a left valve plate 14 is fixedly connected to one end of the telescopic sleeve rod 13 far away, one side of the left valve plate 14 and one side of the right valve plate 10 are both fixedly connected with a sealing part 11, the upper and lower ends of the left valve plate 14 are both fixedly connected with an auxiliary connecting rod 15, one side of the left valve plate 14 is movably connected with a left connecting seat 16, one side of the right connecting seat 4 and one side of the left connecting seat 16 are both provided with grooves, through the arrangement of the left connecting seat 16, the left valve plate 14, the right connecting seat 4 and the right valve plate 10, the working efficiency of the check valve is effectively improved due to the stable conveying of the check valve for petroleum and natural gas drilling, so that the usability of the check valve for petroleum and natural gas drilling is greatly improved, the upper and lower ends of the left connecting seat 16 are both fixedly connected with a left connecting block 17, one side of the left connecting block 17 is provided with a valve opening device 19, the valve opening device 19 comprises a, one side of the driven wheel is engaged with a driving wheel, one side of the driving wheel is fixedly connected with an output shaft of a motor 1912, an eccentric wheel 192 is fixedly connected to a rotating shaft 191, the outer side of the eccentric wheel 192 is movably connected with a fixed rod 193, one side of the fixed rod 193 is fixedly connected with a movable rod 194, the movable rod 194 is movably connected with a left connecting block 17, a through hole matched with the movable rod 194 is formed in the left connecting block 17, the movable rod 194 penetrates through the through hole, an expansion spring 195 positioned on the surface of the movable rod 194 is sleeved between the fixed rod 193 and the left connecting block 17, one end, far away from the fixed rod 193, of the movable rod 194 is fixedly connected with a push plate 196, the other side of the valve body 1 is provided with a feed inlet 18, through the arrangement of a valve opening device 19, the left valve plate 14 and the right valve plate 10, the left, the second layer valve is closed when the first layer valve is opened, and the first layer valve is closed when the second layer valve is opened, so relapse, simple structure, it is sealed effectual, do benefit to the check valve that solves oil, gas drilling usefulness on the existing market and have the following problem that the valve body wearing and tearing are serious oil leak gas leakage, sealed effect is not good enough, is difficult to carry out effectual non return problem, has guaranteed this a check valve's usability for oil, gas drilling.
When the eccentric valve is used, the motor 1912 is used for driving the eccentric wheel 192 to rotate, when the long-diameter arc section of the eccentric wheel 192 rotates to be in surface contact with one side of the fixed rod 193, the push plate 196 at one end of the movable rod 194 is pushed to move rightwards, opening of a first layer of valves can be achieved, meanwhile, under the driving of the adjusting spring 12, the right valve plate 10 is connected with the groove in the right connecting seat 4, closing of a second layer of valves is achieved, when the short-diameter arc section of the eccentric wheel 192 rotates to be in surface contact with one side of the fixed rod 193, the first layer of valves are closed under the return action of the adjusting spring 12, meanwhile, the adjusting spring 12 drives the right valve plate 10 to be separated from the groove in the right connecting seat 4, the second layer of valves are opened, closing of the second layer of valves when the first layer of valves are opened is achieved, closing of the first layer of valves when the second layer of valves are opened, The check valve for natural gas drilling has the following problems that the valve body is seriously abraded, oil leakage and air leakage are caused, the sealing effect is poor, and effective check is difficult to perform.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A check valve for oil and gas drilling, comprising a valve body (1), characterized in that: the valve is characterized in that a discharge port (2) is formed in one side of the valve body (1), a right connecting block (3) located inside the valve body (1) is arranged on one side of the discharge port (2), a right connecting seat (4) is fixedly connected to one end of the right connecting block (3), fixing plates (5) are fixedly connected to the upper side and the lower side of the valve body (1), a sliding groove (6) is formed in each fixing plate (5), a right pulley (7) and a left pulley (8) are slidably connected to the inside of the sliding groove (6), a main connecting rod (9) is fixedly connected to one end, far away from the sliding groove (6), of the right pulley (7), a right valve plate (10) is fixedly connected to one end of the main connecting rod (9), an adjusting spring (12) and a telescopic sleeve rod (13) are sequentially arranged on one side of the right valve plate (10) from top to bottom, and a left valve plate, the valve is characterized in that the upper end and the lower end of the left valve plate (14) are fixedly connected with auxiliary connecting rods (15), one side of the left valve plate (14) is movably connected with a left connecting seat (16), the upper end and the lower end of the left connecting seat (16) are fixedly connected with a left connecting block (17), one side of the left connecting block (17) is provided with a valve opening device (19), and the other side of the valve body (1) is provided with a feeding hole (18).
2. The check valve for oil and gas drilling of claim 1, wherein: the valve opening device (19) comprises a rotating shaft (191), an eccentric wheel (192) is fixedly connected to the rotating shaft (191), and a fixing rod (193) is movably connected to the outer side of the eccentric wheel (192).
3. The check valve for oil and gas drilling of claim 2, wherein: one side fixedly connected with movable rod (194) of dead lever (193), swing joint has left connecting block (17) on movable rod (194), cup joint between dead lever (193) and left connecting block (17) and be located telescopic spring (195) on movable rod (194) surface.
4. A check valve for oil and gas drilling according to claim 3, wherein: one end of the movable rod (194) far away from the fixed rod (193) is fixedly connected with a push plate (196).
5. The check valve for oil and gas drilling of claim 2, wherein: one end, far away from the eccentric wheel (192), of the rotating shaft (191) is fixedly connected with a conical gear (1911), the conical gear (1911) comprises a driving wheel and a driven wheel, one side of the driven wheel is meshed with the driving wheel, and one side of the driving wheel is fixedly connected with an output shaft of a motor (1912).
6. The check valve for oil and gas drilling of claim 1, wherein: grooves are formed in one sides of the right connecting seat (4) and the left connecting seat (16).
7. The check valve for oil and gas drilling of claim 1, wherein: and one sides of the left valve plate (14) and the right valve plate (10) are fixedly connected with a sealing piece (11).
8. The check valve for oil and gas drilling of claim 1, wherein: and one end of the auxiliary connecting rod (15) far away from the left valve plate (14) is fixedly connected with a left pulley (8).
9. A check valve for oil and gas drilling according to claim 3, wherein: the left connecting block (17) is provided with a through hole matched with the movable rod (194), and the movable rod (194) penetrates through the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548779.2A CN112628426B (en) | 2020-12-24 | 2020-12-24 | Check valve for petroleum and natural gas drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011548779.2A CN112628426B (en) | 2020-12-24 | 2020-12-24 | Check valve for petroleum and natural gas drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112628426A true CN112628426A (en) | 2021-04-09 |
| CN112628426B CN112628426B (en) | 2022-09-20 |
Family
ID=75324227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011548779.2A Active CN112628426B (en) | 2020-12-24 | 2020-12-24 | Check valve for petroleum and natural gas drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112628426B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB859813A (en) * | 1956-02-13 | 1961-01-25 | New Prod Corp | Improved valve for controlling fluid flow |
| GB1209101A (en) * | 1967-05-15 | 1970-10-21 | Caterpillar Tractor Co | Relief valve |
| FR2040938A5 (en) * | 1969-04-24 | 1971-01-22 | Snecma | |
| US5833209A (en) * | 1994-07-29 | 1998-11-10 | Hoerbiger Ventilwerke Aktiengesellschaft | Device and method for influencing the periodic stroke movement of the closing element of a valve |
| US6202671B1 (en) * | 1998-06-25 | 2001-03-20 | Daimlerchrysler Ag | Control valve for cryogenic liquid propellant |
| US6508272B1 (en) * | 2000-11-20 | 2003-01-21 | Arichell Technologies, Inc. | Device and method for operating at least two valves |
| CN202302103U (en) * | 2011-04-01 | 2012-07-04 | 通用设备和制造公司 | Lift valve assembly and system for controlling pneumatic actuator |
| CN103423494A (en) * | 2013-08-30 | 2013-12-04 | 大连理工安全装备有限公司 | Conical spring self-closing explosion venting valve with adjustable pressure |
| CN106594294A (en) * | 2016-12-08 | 2017-04-26 | 中国航天空气动力技术研究院 | Air pressure type rapid switching valve |
| CN106763964A (en) * | 2016-12-29 | 2017-05-31 | 重庆良工科技有限公司 | A kind of Pull breaking ualve |
| CN108644173A (en) * | 2018-05-18 | 2018-10-12 | 宁波真格液压科技有限公司 | A kind of hydraulic valve |
| CN108716569A (en) * | 2018-06-28 | 2018-10-30 | 安徽德锐迈液压机械有限公司 | A kind of durable fluid pressure valve device |
| CN110617351A (en) * | 2019-10-15 | 2019-12-27 | 铜陵市兴达阀门总厂 | Low-resistance backflow preventer |
-
2020
- 2020-12-24 CN CN202011548779.2A patent/CN112628426B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB859813A (en) * | 1956-02-13 | 1961-01-25 | New Prod Corp | Improved valve for controlling fluid flow |
| GB1209101A (en) * | 1967-05-15 | 1970-10-21 | Caterpillar Tractor Co | Relief valve |
| FR2040938A5 (en) * | 1969-04-24 | 1971-01-22 | Snecma | |
| US5833209A (en) * | 1994-07-29 | 1998-11-10 | Hoerbiger Ventilwerke Aktiengesellschaft | Device and method for influencing the periodic stroke movement of the closing element of a valve |
| US6202671B1 (en) * | 1998-06-25 | 2001-03-20 | Daimlerchrysler Ag | Control valve for cryogenic liquid propellant |
| US6508272B1 (en) * | 2000-11-20 | 2003-01-21 | Arichell Technologies, Inc. | Device and method for operating at least two valves |
| CN202302103U (en) * | 2011-04-01 | 2012-07-04 | 通用设备和制造公司 | Lift valve assembly and system for controlling pneumatic actuator |
| CN103423494A (en) * | 2013-08-30 | 2013-12-04 | 大连理工安全装备有限公司 | Conical spring self-closing explosion venting valve with adjustable pressure |
| CN106594294A (en) * | 2016-12-08 | 2017-04-26 | 中国航天空气动力技术研究院 | Air pressure type rapid switching valve |
| CN106763964A (en) * | 2016-12-29 | 2017-05-31 | 重庆良工科技有限公司 | A kind of Pull breaking ualve |
| CN108644173A (en) * | 2018-05-18 | 2018-10-12 | 宁波真格液压科技有限公司 | A kind of hydraulic valve |
| CN108716569A (en) * | 2018-06-28 | 2018-10-30 | 安徽德锐迈液压机械有限公司 | A kind of durable fluid pressure valve device |
| CN110617351A (en) * | 2019-10-15 | 2019-12-27 | 铜陵市兴达阀门总厂 | Low-resistance backflow preventer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112628426B (en) | 2022-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201711322U (en) | Positive and negative pressure suction device for cleaning oil tank | |
| CN101956685A (en) | Fully water-lubricated super-pressure plunger water pump | |
| CN112628426B (en) | Check valve for petroleum and natural gas drilling | |
| CN110159240B (en) | Coal bed gas exploitation fracturing equipment | |
| CN116337353B (en) | Sealing detection device for stop valve | |
| CN106837729B (en) | The plunger pump of hydraulic system | |
| CN104481834B (en) | A kind of plunger pump | |
| CN208010963U (en) | A kind of hard seal ball valve | |
| CN110485954A (en) | Continuous circulation of drilling mud Processes and apparatus | |
| KR101302307B1 (en) | Gas compressor | |
| CN204851606U (en) | Novel diaphragm pump | |
| CN211009051U (en) | Be suitable for high impurity quality of water plunger pump fluid end structure | |
| CN212439813U (en) | Petrochemical detects auxiliary assembly | |
| CN201148965Y (en) | Movable barrel type straight line motor oil-well pump | |
| CN103306972B (en) | Combined cam pump rotor, cam pump and emptying sweeping device | |
| CN100356062C (en) | Hydraulic oil pumping device for inclined shaft | |
| CN201786595U (en) | Full water-lubrication superhigh pressure plunger-type water pump | |
| CN209309629U (en) | A kind of pneumatic type oil grease squirt | |
| CN201103727Y (en) | Balance type check valve | |
| CN107654210A (en) | A kind of drilling well throttle type drill rod check valve | |
| CN113669044B (en) | Shale gas fracturing is with shockproof ground manifold of decompression | |
| CN206539331U (en) | Exempt from kill-job to exempt to unload Christmas tree wellhead blowout preventer | |
| CN201661459U (en) | Rotating semispherical type fixed valve | |
| CN216198735U (en) | Novel mud pump | |
| CN109990124A (en) | A kind of band protection face check-valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |