CN110345269A - A kind of multistage volume control device of oil gas field production - Google Patents
A kind of multistage volume control device of oil gas field production Download PDFInfo
- Publication number
- CN110345269A CN110345269A CN201910548405.1A CN201910548405A CN110345269A CN 110345269 A CN110345269 A CN 110345269A CN 201910548405 A CN201910548405 A CN 201910548405A CN 110345269 A CN110345269 A CN 110345269A
- Authority
- CN
- China
- Prior art keywords
- pressing plate
- shaft
- valve body
- valve pocket
- shell
- 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
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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/34—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The invention discloses a kind of oil gas fields to produce with multistage volume control device, the present invention includes shell, adjuster and the handle for driving adjuster, the shell is fixedly attached on adjuster, and inlet and liquid outlet are provided on shell, liquid reaches liquid outlet by adjuster by inlet, during handle rotation, there are states of different sizes for the flow of the liquid outlet.Pressing plate and valve body of the invention is connected by mirror surface, and certain pretightning force is arranged between pressing plate and valve body, guarantees that it seals validity；By rotating pressing plate, make the axis discharge orifice for entering different pore size on liquid channel alignment valve body on pressing plate to carry out multistage flow adjusting, progress in the process easy to produce is quickly quantitative to adjust and match production；Drive shaft rotate when, pressing plate influenced by discharge pressure it is smaller, shaft rotate when it is more laborsaving.
Description
Technical field
The present invention relates to oilfield equipment technical fields, and in particular to a kind of multistage volume control device of oil gas field production.
Background technique
In oil gas field production process, it usually needs in order to meet the needs of different productions, need to producing and conveyed
The fluid of journey carries out flow control.But the application of traditional adjustable restrictor and fixation type throttle device etc. is required to manually instead
Polyphony is whole, takes time and effort and can not accomplish accurately, difficult with producing.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of accurate oil gas field production of adjusting multistage flow control dress
It sets.
To solve the above-mentioned problems, the present invention includes shell, adjuster and the handle for driving adjuster, the shell
Body is fixedly attached on adjuster, and inlet and liquid outlet are provided on shell, and liquid is reached by inlet by adjuster
Liquid outlet, during handle rotation, there are states of different sizes for the flow of the liquid outlet.
As optimization, adjuster of the present invention includes valve pocket, shaft, valve body and pressing plate, and the valve body is connected to
One end of valve pocket, the shaft sequentially pass through valve pocket, valve body and pressing plate along the axis direction of valve pocket, shape between valve body and valve pocket
At sap cavity out, it is provided with the diameter discharge orifice being connected to sap cavity out on the side wall of valve pocket, is set on valve body along the circumferential direction interval of valve body
It is equipped with the axis discharge orifice that several apertures are all different, the pressing plate is fixedly connected with shaft, and one is provided on pressing plate, and to enter liquid logical
Road, and connected between pressing plate and valve body by mirror surface, the handle is fixedly connected with shaft.
As optimization, be provided with preload component in shaft of the present invention, the preload component include clamp nut,
Limit sleeve, pre-load nut and preloading spring, the clamp nut are threadedly attached in the end of shaft, and clamp nut position
In the outside of pressing plate, the limit sleeve is connected to one end on valve pocket far from valve body, and is formed between valve pocket and limit sleeve pre-
Tight adjusting cavity pre-tightens adjusting cavity and seals between sap cavity out, and the preloading spring and pre-load nut are respectively positioned on preload adjusting cavity
Interior, preloading spring is socketed in shaft, and pre-load nut is located at one end far from sap cavity out of preloading spring, and by screw thread and turns
Axis connection, the handle are located at the outside of limit sleeve.
As optimization, it is further fixedly arranged on positioning ring in shaft of the present invention, along the week of positioning ring on the lateral surface of positioning ring
Be provided with several positioning protrusion on direction, on the medial surface of the limit sleeve it is corresponding with positioning ring be provided with it is several fixed
Position slot, there is the state for being respectively positioned on and in locating slot and being respectively positioned on outside locating slot in the positioning protrusion, and work as the equal position of positioning protrusion
When in locating slot, the liquid channel that enters on the pressing plate is in and the homogeneous corresponding shape of one of diameter discharge orifice on valve body
State.
As optimization, wave spring is provided between clamp nut and pressing plate of the present invention.
As optimization, pressing plate of the present invention is connected by polygon anti-rotation structure, and polygon shaft is provided in shaft
Section, polygonal hole corresponding with the polygon shaft part in shaft, the polygonal hole set on pressing plate are provided on the middle part of pressing plate
It connects on the polygon shaft part in shaft.
As optimization, shell of the present invention is socketed on valve pocket by screw thread, and locking is provided between valve pocket
Screw is provided with several sealing rings between shell and valve pocket, the inlet of shell is provided in the corresponding one end of pressing plate, shell
Liquid outlet is provided in the diameter discharge orifice corresponding section of valve pocket.
As optimization, connect between valve pocket and valve body of the present invention by the way that several lock-screws of circumferential direction are fixed
It connects, is fixed between valve pocket and limit sleeve also by several lock-screws, locking is also equipped between pre-load nut and shaft
Screw.
As optimization, the end of limit sleeve of the present invention, which is provided with, shows a disk, is located in shaft and shows a Pan Chu setting
There is pointer.
The beneficial effects of the present invention are:
1, pressing plate of the invention and valve body are connected by mirror surface, and certain pretightning force is arranged between pressing plate and valve body, are protected
It demonstrate,proves it and seals validity；
2, by rotation pressing plate, the axis discharge orifice for entering different pore size on liquid channel alignment valve body on pressing plate is made to carry out multistage flow
It adjusts, convenient for being adjusted in production process；
3, drive shaft rotate when, pressing plate influenced by discharge pressure it is smaller, shaft rotate when it is more laborsaving.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic cross-sectional view of adjuster of the invention.
Wherein: 1, shell, 2 adjusters, 3, handle, 4, clamp nut, 5, pressing plate, 6, enter liquid channel, 7, axis discharge orifice, 8, lock
Tight screw, 9, valve body, 10, shaft, 11, sealing ring, 12, valve pocket, 13, preloading spring, 14, lock-screw, 15, lock-screw,
16, pre-load nut, 17, positioning ring, 18, positioning protrusion, 19, limit sleeve, 20, show a disk, 21, go out sap cavity, 22, pre-tighten and adjust
Chamber, 1-1, inlet, 1-2, liquid outlet, 12-1, diameter discharge orifice.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
The multistage volume control device of oil gas field production as indicated with 1, including shell 1, adjuster 2 and adjusted for driving
The handle 3 of device 2, the shell 1 is fixedly attached on adjuster 2, and inlet 1-1 and liquid outlet 1- are provided on shell 1
2, as shown in Fig. 2, the adjuster 2 includes valve pocket 12, shaft 10, valve body 9 and pressing plate 5, the shell 1 passes through thread bush
It connects on valve pocket 12, and is provided with lock-screw 14 between valve pocket 12, several sealing rings are provided between shell 1 and valve pocket 12
11, the inlet 1-1 of shell 1 are provided in the corresponding one end of pressing plate 5, and the liquid outlet 1-2 of shell 1 is provided in the diameter of valve pocket 12
The corresponding section discharge orifice 12-1.The valve body 9 is connected to one end of valve pocket 12, passes through week between the valve pocket 12 and valve body 9
It is fixedly connected to several lock-screws 8 in direction.The shaft 10 sequentially passes through valve pocket 12, valve along the axis direction of valve pocket 12
Body 9 and pressing plate 5 form out sap cavity 21 between valve body 9 and valve pocket 12, be provided on the side wall of valve pocket 12 and be connected to sap cavity 21 out
Diameter discharge orifice 12-1, the circumferential direction on valve body along valve body are arranged at intervals with the axis discharge orifice 7 that several apertures are all different, the pressure
Plate 5 is connected by polygon anti-rotation structure, and polygon shaft part is provided in shaft 10, is provided on the middle part of pressing plate 5 and shaft
The corresponding polygonal hole of polygon shaft part on 10, the polygonal hole on pressing plate 5 are socketed in the polygon shaft part in shaft 10
On.It is provided with one on pressing plate 5 and enters liquid channel 6, and is connected between pressing plate 5 and valve body 9 by mirror surface, the handle 3
Be fixedly connected with shaft 10, by shaft 10 with dynamic pressure plate 5 rotate so that on pressing plate 5 enter liquid channel 6 exist on valve body 9
The state that different axial holes 7 is aligned carries out flow adjusting by the axis discharge orifice 7 of different pore size on valve body 9.The shaft 10
On be provided with preload component, the preload component includes clamp nut 4, limit sleeve 19, pre-load nut 16 and preloading spring, institute
The clamp nut 4 stated is threadedly attached in the end of shaft 10, and clamp nut 4 is located at the outside of pressing plate 5, clamp nut 4
Wave spring is provided between pressing plate 5.The limit sleeve 19 is connected to one end on valve pocket 12 far from valve body 9, valve pocket 12 and limit
It is fixed between position set 19 also by several lock-screws 14, is formed between valve pocket 12 and limit sleeve 19 and pre-tighten adjusting cavity 22,
It pre-tightens adjusting cavity 22 and seals between sap cavity 21 out, the preloading spring 13 and pre-load nut 16 are respectively positioned on and pre-tighten adjusting cavity 22
Interior, preloading spring 13 is socketed in shaft 10, and pre-load nut 16 is located at one end far from sap cavity 21 out of preloading spring 13, is pre-tightened
Nut 16 is connect by screw thread with shaft 10, and lock-screw 15, locking screw are also equipped between pre-load nut 16 and shaft 10
Nail 15 is for fixing pre-load nut 16 after adjusting pre-load nut 16.The handle 3 is located at the outside of limit sleeve 19, and described
The end of limit sleeve 19 be provided with and show a disk 20, be located in shaft 10 and show that a Pan20Chu is provided with pointer.
Positioning ring 17 is further fixedly arranged in the present embodiment shaft 10, along the week of positioning ring 17 on the lateral surface of positioning ring 17
It is provided with several positioning protrusion 18 on direction, it is corresponding with positioning ring 17 on the medial surface of the limit sleeve 19 to be provided with
There is the state for being respectively positioned on and in locating slot and being respectively positioned on outside locating slot in several locating slots, the positioning protrusion 18, and when positioning
When protrusion 18 is respectively positioned in locating slot, the liquid channel 6 that enters on the pressing plate 5 is in and one of axis discharge orifice 7 on valve body 9
Corresponding state.The setting of positioning protrusion 18 and locating slot can be when drive shaft 10 rotates, convenient for shaft 10
Rotation is positioned, and is aligned convenient for the liquid channel 6 that enters on pressing plate 5 with the axial hole 7 on valve body 9.
Above-mentioned specific embodiment is only specific case of the invention, and scope of patent protection of the invention includes but is not limited to
The product form and style of above-mentioned specific embodiment, any claims of the present invention and any technical field of meeting
The appropriate changes or modifications that those of ordinary skill does it, all shall fall within the protection scope of the present invention.
Claims (9)
1. a kind of multistage volume control device of oil gas field production, it is characterised in that: adjusted including shell, adjuster and for driving
Save device handle, the shell is fixedly attached on adjuster, and inlet and liquid outlet are provided on shell, liquid by into
Liquid mouth reaches liquid outlet by adjuster, and during handle rotation, there are of different sizes for the flow of the liquid outlet
State.
2. the multistage volume control device of oil gas field production according to claim 1, it is characterised in that: the adjuster
Including valve pocket, shaft, valve body and pressing plate, the valve body is connected to one end of valve pocket, and the shaft is along the axis side of valve pocket
To valve pocket, valve body and pressing plate is sequentially passed through, sap cavity is formed out between valve body and valve pocket, is provided on the side wall of valve pocket and sap cavity out
The diameter discharge orifice of connection, the circumferential direction on valve body along valve body is arranged at intervals with the axis discharge orifice that several apertures are all different, described
Pressing plate is fixedly connected with shaft, and one is provided on pressing plate and enters liquid channel, and is connected between pressing plate and valve body by mirror surface,
The handle is fixedly connected with shaft.
3. the multistage volume control device of oil gas field production according to claim 2, it is characterised in that: in the shaft
It is provided with preload component, the preload component includes clamp nut, limit sleeve, pre-load nut and early warning spring, the pressure
Tight nut is threadedly attached in the end of shaft, and clamp nut is located at the outside of pressing plate, and the limit sleeve is connected to valve
One end far from valve body is put on, and is formed between valve pocket and limit sleeve and pre-tightens adjusting cavity, pre-tightens adjusting cavity and close between sap cavity out
Envelope, the preloading spring and pre-load nut, which are respectively positioned on, to be pre-tightened in adjusting cavity, and preloading spring is socketed in shaft, pre-load nut position
It in preloading spring far from the one end for going out sap cavity, and is connect by screw thread with shaft, the handle is located at the outside of limit sleeve.
4. the multistage volume control device of oil gas field production according to claim 3, it is characterised in that: also fixed in shaft
It is provided with positioning ring, is provided with several positioning protrusion, the limit on the lateral surface of positioning ring in the circumferential direction of positioning ring
Corresponding with positioning ring on the medial surface of position set to be provided with several locating slots, the positioning protrusion, which exists, is respectively positioned on locating slot
State that is interior and being respectively positioned on outside locating slot, and when positioning protrusion is respectively positioned in locating slot, enter liquid channel on the pressing plate
In with the homogeneous corresponding state of one of diameter discharge orifice on valve body.
5. the multistage volume control device of oil gas field production according to claim 3, it is characterised in that: the compression spiral shell
Wave spring is provided between female and pressing plate.
6. the multistage volume control device of oil gas field production according to claim 2, it is characterised in that: the pressing plate is logical
Cross the connection of polygon anti-rotation structure, be provided with polygon shaft part in shaft, be provided on the middle part of pressing plate with it is polygon in shaft
The corresponding polygonal hole of shape shaft part, the polygonal hole on pressing plate are socketed on the polygon shaft part in shaft.
7. the multistage volume control device of oil gas field production according to claim 2, it is characterised in that: the shell is logical
It crosses screw thread to be socketed on valve pocket, and is provided with lock-screw between valve pocket, several sealing rings are provided between shell and valve pocket,
The inlet of shell is provided in the corresponding one end of pressing plate, and the liquid outlet of shell is provided in the diameter discharge orifice corresponding section of valve pocket.
8. the multistage volume control device of oil gas field according to claim 3 production, it is characterised in that: the valve pocket with
It is fixedly connected between valve body by several lock-screws of circumferential direction, also by several lock-screws between valve pocket and limit sleeve
It is fixed, lock-screw is also equipped between pre-load nut and shaft.
9. the multistage volume control device of oil gas field production according to claim 1, it is characterised in that: the limit sleeve
End be provided with and show a disk, be located in shaft and show that a Pan Chu is provided with pointer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548405.1A CN110345269B (en) | 2019-06-24 | 2019-06-24 | Multi-stage flow control device for oil and gas field production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548405.1A CN110345269B (en) | 2019-06-24 | 2019-06-24 | Multi-stage flow control device for oil and gas field production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110345269A true CN110345269A (en) | 2019-10-18 |
| CN110345269B CN110345269B (en) | 2020-09-01 |
Family
ID=68182858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910548405.1A Active CN110345269B (en) | 2019-06-24 | 2019-06-24 | Multi-stage flow control device for oil and gas field production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110345269B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2108794U (en) * | 1991-11-18 | 1992-07-01 | 四川石油管理局川中矿区 | Anti-sulfur restriction choke |
| JP2674706B2 (en) * | 1987-06-17 | 1997-11-12 | セ・イ・セ・ウ・エス・アー | A disk with at least one opening and a cock containing this disk |
| CN201110454Y (en) * | 2007-11-26 | 2008-09-03 | 扬州锻压机床集团有限公司 | Restrictor |
| CN103410485A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Hole-regulating variable-pressure down-hole choke |
| CN204457682U (en) * | 2015-02-15 | 2015-07-08 | 重庆科技学院 | A kind of novel adjustable underground throttle device |
| CN204628688U (en) * | 2015-02-10 | 2015-09-09 | 昆山市聚杨锻造有限公司 | A kind of petroleum pipeline valve body along separate routes |
| CN207112004U (en) * | 2017-05-04 | 2018-03-16 | 衢州市膜力环保科技有限公司 | A kind of binary stream control valve |
-
2019
- 2019-06-24 CN CN201910548405.1A patent/CN110345269B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2674706B2 (en) * | 1987-06-17 | 1997-11-12 | セ・イ・セ・ウ・エス・アー | A disk with at least one opening and a cock containing this disk |
| CN2108794U (en) * | 1991-11-18 | 1992-07-01 | 四川石油管理局川中矿区 | Anti-sulfur restriction choke |
| CN201110454Y (en) * | 2007-11-26 | 2008-09-03 | 扬州锻压机床集团有限公司 | Restrictor |
| CN103410485A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Hole-regulating variable-pressure down-hole choke |
| CN204628688U (en) * | 2015-02-10 | 2015-09-09 | 昆山市聚杨锻造有限公司 | A kind of petroleum pipeline valve body along separate routes |
| CN204457682U (en) * | 2015-02-15 | 2015-07-08 | 重庆科技学院 | A kind of novel adjustable underground throttle device |
| CN207112004U (en) * | 2017-05-04 | 2018-03-16 | 衢州市膜力环保科技有限公司 | A kind of binary stream control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110345269B (en) | 2020-09-01 |
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