CN2431397Y - Hydraulic combined valve - Google Patents
Hydraulic combined valve Download PDFInfo
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- CN2431397Y CN2431397Y CN 00238948 CN00238948U CN2431397Y CN 2431397 Y CN2431397 Y CN 2431397Y CN 00238948 CN00238948 CN 00238948 CN 00238948 U CN00238948 U CN 00238948U CN 2431397 Y CN2431397 Y CN 2431397Y
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Abstract
The utility model provides a hydraulic combined valve, which is used for petroleum and geologic exploration and development of movement courses of well drilling of oil wells, automatic control of wellbore tracks, and operating mechanisms of downhole closed loop control systems. The utility model uses special hydraulic oil as working mediums, and a conventional hydraulic valve or a valve core and a valve cover which have the same function of the conventional hydraulic valve are integrated in a downhole narrow circle space; the utility model has the functions of overload protection, switching control, and position locking function, and has the advantages of long service lives of components, small volume, accurate control, reliable work, etc.
Description
The utility model relates to a kind of valve, especially for the oil gas well drilling operation process of oil and geological exploration and development, borehole track is carried out hydraulic control combination valve in the executing agency in automation control, the downhole closed loop control system.
The borehole track automatic control technology is the latest fields of world today's drilling technology, is a new and high technology, and this technology can reduce drilling cost on the whole, improve the benefit of drilling well success rate and exploration and development.The core of borehole track automatic control technology is an intelligence system, and it has from motion tracking and calibration function, when real brill track and design track generation deviation, promptly begins to correct this deviation, and this is so-called borehole track downhole closed loop control system.This system mainly is made up of following four parts: measuring system, shaft bottom emitter/receiver, down-hole microprocessor and borehole track control executing agency.Abroad mainly contain at present states such as American and Britain, method, moral, Norway, meaning ten surplus company be at war with, the product of development such as VDS (automatic vertical drilling system), RCLS (rotation closed loop guidance system), AGS (automatic guiding system), AutoTrack (automatic tracking system) and ADD, IDEAL, TRACS or the like, a part has entered The field, a part has begun to carry out field experiment, has shown excellent control effect and development prospect.
In the borehole track control executing agency of downhole closed loop control system, controlling hole deviation by the stroke of regulating controlled stabilizer rib piece has become everybody common recognition.Whether can be divided into two big classes, promptly rotary controlled stabilizer and the controlled stabilizer of state type according to guide pad with drill string rotating; Can be divided into again according to the power resources that drive flexible stabilizer rib piece that mud drives controlled stabilizer and hydraulic oil drives controlled stabilizer.No matter whether controlled stabilizer rotates, and still adopts different working medias, and they have characteristics separately.
The performance comparison of controlled stabilizer of state type and rotary controlled stabilizer can branch the following aspects: 1. adjust the comparison of stationarity.The guiding hydraulic cylinder of the controlled stabilizer of state type is placed in the static overcoat, and the guide piston adjustment is steady during guiding; The hydraulic cylinder of rotary controlled stabilizer is arranged on the drill string of rotation, and the drill bit guide piston that whenever rotates a circle is flexible once during guiding, brings bigger shock and vibration to instrument.2. the comparison of control.The controlled stabilizer of state type utilizes three pressure-control valves to adjust the interior pressure of three different directions guiding hydraulic cylinders respectively, controls size and the direction that the guiding concentrated force is made a concerted effort according to the vector composition principle of power; Rotary controlled stabilizer utilizes the size and the direction of the guiding concentrated force of a servo direction rotary control valve control guide piston, though it can not adjust the size of guiding hydraulic cylinder internal pressure, but it can control guide effect power the guiding on action time, adjust guidance capability with this.3. the comparison of moment of torsion transfer mode.The controller of the controlled stabilizer of state type, measuring apparatus and control valve etc. are arranged in the overcoat, the central axis transfer torque of overcoat is passed in utilization, weakened the compressive strength and the torsional strength of instrument, therefore, the radial dimension of the controlled stabilizer of state type can not be less; The control valve of rotary controlled stabilizer, downhole controller and sensor etc. all are arranged in the centre of drilling tool, utilize urceolus to drive the drill bit rotation, can guarantee transfer larger torque.
Adopting mud is simple in structure as the significant advantage of fluid power drive source (as early stage VDS), does not need special hydraulic system.Yet this design has brought the inconvenience of using: 1. when bit pressuredrop changed, the power of distributing to the automatic deviation correction guiding of hydraulic system changed thereupon.Like this, the dependence of field operation is big, very flexible; 2. require the various valves of hydrodynamic unit need do a large amount of care and maintenances, and require hydraulic unit that higher wear resistance and resistance to corrosion are arranged; 3. the mud hydraulic systems is had any problem to the pressure of the flexible rib piece of accurate adjusting.In the design of controlled stabilizer, use the working media (as RCLS) of special hydraulic oil, can guarantee that piston reaches predetermined pressure as hydraulic system, and irrelevant with bit pressuredrop, increase the reliability of hydraulic unit work simultaneously, prolonged the application life of part; But because of underground is independently, control structure is complicated.Usually in hydraulic control system, each rib piece has separately independently hydraulic piston driving, but also comprises a regulator and a turbo-driven oil pump.
Above-mentioned controlled stabilizer is widely used in the borehole track automatic control system, has obtained effect preferably in some areas.But because of its radiai adjustment scope less (most adjustable ranges are between half inch), as a rule, its practical function is restricted.As in high angle hole or the bigger well section of build angle rate, rely on the limited radiai adjustment scope of controlled stabilizer, effective control of hole deviation just is difficult to prove effective.Because, the hydraulic oil finite capacity in the fluid power drive source, thus the stroke that the driving hydraulic cylinder piston moves is also limited.In addition, present control valve commonly used is placed on the ground in the drilling well, control inconvenience.In order to remedy controlled stabilizer shown deficiency that goes out in the downhole closed loop control system, can adopt the adjustable curved housing in automatic control type down-hole, improve control ability to borehole track, thus the control valve that need drive and control this adjustable curved housing.
The purpose of this utility model is to provide a kind of executing agency's hydraulic control combination valve that is used for the oil gas well drilling operation process of oil and geological exploration and development, borehole track is carried out automation control, downhole closed loop control system.It is a working media with special hydraulic oil; conventional hydraulic valve or with it the spool valve pocket of identical functions valve be integrated in the narrow and small annular space in down-hole; have overload protection, switch control and lock-bit function; have the part long service life, volume is little, control is accurate and advantage such as reliable operation; and improved the driving stroke of hydraulic control combination valve, increased the limited radiai adjustment scope of controlled stabilizer.
The purpose of this utility model is achieved in that a kind of hydraulic control combination valve, this hydraulic control combination valve is provided with the oil inlet P that is communicated in hydraulic drive source and is communicated in the oil-out T of fuel tank, this hydraulic control combination valve also is provided with and drives the oil pocket that mouthful A and oil return opening B are communicated in the hydraulic cylinder piston both sides respectively, the oil inlet P of this hydraulic control combination valve is to driving mouthful A by the electromagnetic switch valve module, bidirectional hydraulic lock module and oil return opening B to oil-out T by the bidirectional hydraulic lock module, the electromagnetic switch valve module constitutes path simultaneously, the oil inlet P of this hydraulic control combination valve to oil return opening B by the electromagnetic switch valve module, the bidirectional hydraulic lock module with drive mouthful A to oil-out T by the bidirectional hydraulic lock module, the electromagnetic switch valve module constitutes path simultaneously.Be communicated with overflow valve between the oil circuit of the oil circuit of described connection oil-in and connection oil-out to the conducting of oil-in direction.Oil circuit between the one way valve one way valve that the oil circuit of described connection oil-in is provided with the conducting of oil-feed direction and the oil-in and be communicated with between the oil circuit of oil-out and be communicated with the one way valve of oil-out to the conducting of oil-in direction.Described bidirectional hydraulic lock module is provided with the bidirectional hydraulic lock valve body, these valve body two ends are provided with the one-way valve core assembly, the one way valve spool withstands on the valve port towards the centre, is provided with two ends in the valve pocket between the two one way valve spools and is provided with most advanced and sophisticated valve rod, and each one way valve valve port both sides all is communicated with oil circuit.Described electromagnetic switch valve module is provided with two solenoid operated directional valves, the oil inlet and outlet of this solenoid operated directional valve by by the electromagnetic valve piece of Electromagnetic Drive move with two bifurcations in one constitute path.The valve body of described hydraulic control combination valve is provided with in the middle of the hydraulic control combination valve and can holds the through hole that power transmission shaft passes ringwise, and hydraulic control combination valve outer ring is provided with housing, and the hydraulic control combination valve is nested in the housing.The valve body of described hydraulic control combination valve is made as discerptible a plurality of module, connects as a whole by trip bolt between each module.Oil circuit interface between described each module is provided with sealing device.The oil circuit interface that is connected with the outside on the described hydraulic control combination valve is provided with sealing device.
Operating principle of the present utility model is such:
Hydraulic control combination valve of the present utility model, the P mouth of oil circuit links to each other with the fluid power drive source, and the T mouth leads to fuel tank; A, B mouth are connected with the oil pocket of hydraulic cylinder piston left and right sides respectively.
When needs were regulated the displacement of hydraulic cylinder piston, hydraulic system had the control signal input, and hydraulic oil enters combination valve through the P mouth, arrives closed type solenoid operated directional valve a and b through one way valve S1, and control signal produces one of following two kinds of actions then:
1. make a energising, solenoid operated directional valve is opened, hydraulic oil is through a, open hydraulic control one-way valve L1 and L2, hydraulic oil enters the left chamber of hydraulic cylinder piston, and meanwhile, the oil return line of L2 and solenoid operated directional valve b constitutes the way to cycle oil of the right chamber of piston hydraulic oil, hydraulic oil constantly enters the left chamber of hydraulic cylinder piston, promotes piston and moves right; After a outage, the oil pressure of bidirectional hydraulic lock front end disappears, and L1 and L2 close, and the outgoing position of hydraulic cylinder is locked.
2. make the b energising, hydraulic oil enters the right chamber of hydraulic cylinder piston, and L1 that is opened and the oil return line of a constitute the way to cycle oil in chamber, a piston left side, and piston moves to left; After the b outage, the position of bidirectional hydraulic lock locking hydraulic cylinder.
When hydraulic oil when the P mouth enters combination valve, a and b no power, hydraulic oil through S1, open overflow valve f, flow back to fuel tank through the T mouth; When fluid power drive source during from the fuel tank oil suction, hydraulic oil enters drive source by the T mouth, through one way valve S2 and P mouth.
Use hydraulic control combination valve of the present utility model, have following usefulness:
1, the utility model is working media with hydraulic oil, and the component long service life of hydraulic system need not to do a large amount of care and maintenances, and the wear resistance and the resistance to corrosion of hydraulic unit are not done too high requirement.
2, main hydraulic unit of the present utility model is conventional hydraulic valve or the spool and the valve pocket of identical functions valve with it, and cost is low, and manufacturing process is simple, is easy to popularize.
3, the utility model has adopted the form of integrated valve block, compact conformation, and volume is little, is easy to arrange in limited space, down-hole.
4, hydraulic system of the present utility model is simple, reliable working performance.
5, function of the present utility model is stronger, has overload protection, switch control and lock-bit function, particularly its lock-bit function, can make the bigger stroke of hydraulic cylinder piston output according to the repeatedly fuel feeding of design needs realization to hydraulic cylinder.
6, the utility model is the core valve group of control executing agency hydraulic control system, but wide popularization and application is in the hydraulic system of other executing agency of down-hole automatic control system.
Further describe the utility model below in conjunction with accompanying drawing.
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is the arrangement diagram of each module of the utility model.
Fig. 3 is an expanded view of the present utility model.
Fig. 4 is the vertical view of one way valve overflow valve module oil circuit.
Fig. 4 A is the expanded view of one way valve overflow valve module oil circuit.
Fig. 5 is the vertical view of an electromagnetic valve module oil circuit.
Fig. 5 A is the expanded view of an electromagnetic valve module oil circuit.
Fig. 6 is the vertical view of another electromagnetic valve module oil circuit.
Fig. 6 A is the expanded view of another electromagnetic valve module oil circuit.
Fig. 7 is the vertical view of bidirectional hydraulic lock module oil circuit.
Fig. 7 A is a side expanded view of bidirectional hydraulic lock module oil circuit.
Fig. 7 B is the opposite side expanded view of bidirectional hydraulic lock module oil circuit.
Fig. 8 is the assembling side elevation of each module of the utility model.
Fig. 9 is the assembly drawing of each module of the utility model.
See also Fig. 1, be schematic diagram of the present utility model.Hydraulic control combination valve of the present utility model, the P mouth of oil circuit links to each other with the fluid power drive source, and the T mouth leads to fuel tank; A, B mouth are connected with the oil pocket of hydraulic cylinder piston left and right sides respectively.Wherein G is a hydraulic cylinder, and Q is the fluid power drive source, and X is a fuel tank, and F is a combination valve.
This hydraulic control combination valve is provided with the oil inlet P that is communicated in hydraulic drive source and is communicated in the oil-out T of fuel tank, this hydraulic control combination valve also is provided with and drives the oil pocket that mouthful A and oil return opening B are communicated in the hydraulic cylinder piston both sides respectively, the oil inlet P of this hydraulic control combination valve is to driving mouthful A by the electromagnetic switch valve module, bidirectional hydraulic lock module and oil return opening B to oil-out T by the bidirectional hydraulic lock module, the electromagnetic switch valve module constitutes path simultaneously, the oil inlet P of this hydraulic control combination valve to oil return opening B by the electromagnetic switch valve module, the bidirectional hydraulic lock module with drive mouthful A to oil-out T by the bidirectional hydraulic lock module, the electromagnetic switch valve module constitutes path simultaneously.
Be communicated with overflow valve between the oil circuit of the oil circuit of described connection oil-in and connection oil-out to the conducting of oil-in direction.
The oil circuit of described connection oil-in is provided with the one way valve of oil-feed direction conducting, the oil circuit between one way valve and the oil-in and be communicated with between the oil circuit of oil-out and be communicated with the one way valve of oil-out to the conducting of oil-in direction.
When needs were regulated the displacement of hydraulic cylinder piston, hydraulic system had the control signal input, and hydraulic oil enters combination valve through the P mouth, arrives closed type solenoid operated directional valve a and b through one way valve S1, and control signal produces one of following two kinds of actions then:
1. make a energising, solenoid operated directional valve is opened, hydraulic oil is through a, open hydraulic control one-way valve L1 and L2, hydraulic oil enters the left chamber of hydraulic cylinder piston, and meanwhile, the oil return line of L2 and solenoid operated directional valve b constitutes the way to cycle oil of the right chamber of piston hydraulic oil, hydraulic oil constantly enters the left chamber of hydraulic cylinder piston, promotes piston and moves right; After a outage, the oil pressure of bidirectional hydraulic lock front end disappears, and L1 and L2 close, and the outgoing position of hydraulic cylinder is locked.
2. make the b energising, hydraulic oil enters the right chamber of hydraulic cylinder piston, and L1 that is opened and the oil return line of a constitute the way to cycle oil in chamber, a piston left side, and piston moves to left; After the b outage, the position of bidirectional hydraulic lock locking hydraulic cylinder.
When hydraulic oil when the P mouth enters combination valve, a and b no power, hydraulic oil through S1, open overflow valve f, flow back to fuel tank through the T mouth; When fluid power drive source during from the fuel tank oil suction, hydraulic oil enters drive source by the T mouth, through one way valve S2 and P mouth.
See also Fig. 2 and shown in Figure 3, be the arrangement diagram and the expanded view of the present utility model of each module of the utility model.
Described bidirectional hydraulic lock module is provided with the bidirectional hydraulic lock valve body, these valve body two ends are provided with the one-way valve core assembly, the one way valve spool withstands on the valve port towards the centre, is provided with two ends in the valve pocket between the two one way valve spools and is provided with most advanced and sophisticated valve rod, and each one way valve valve port both sides all is communicated with oil circuit.
Described electromagnetic switch valve module is provided with two solenoid operated directional valves, the oil inlet and outlet of this solenoid operated directional valve by by the electromagnetic valve piece of Electromagnetic Drive move with two bifurcations in one constitute path.
The valve body of described hydraulic control combination valve is provided with in the middle of the hydraulic control combination valve and can holds the through hole that power transmission shaft passes ringwise, and hydraulic control combination valve outer ring is provided with housing, and the hydraulic control combination valve is nested in the housing.
The valve body of described hydraulic control combination valve is made as discerptible a plurality of module, connects as a whole by trip bolt between each module.
The utility model is made up of one way valve overflow valve module, two electromagnetic valve modules, two electromagnet module and bidirectional hydraulic lock module, as shown in Figures 2 and 3.One way valve overflow valve module includes one way valve overflow valve valve body 4, one-way valve core assembly 12, relief valve spool assembly 13, one-way valve core assembly 14, two electromagnetic valve modules are made up of electromagnetic valve body 3, valve core of the electromagnetic valve assembly 11 and electromagnetic valve valve 5, valve core of the electromagnetic valve assembly 15 respectively, two electromagnet module are made up of electromagnet base 2, electromagnet assembly 10 and electromagnet base 6, electromagnet assembly 16 respectively, and the bidirectional hydraulic lock module is made up of bidirectional hydraulic lock valve body 1, hydraulic control one-way valve core assembly 9.
The utility model can adopt the component such as spool valve pocket of existing one way valve, direct-acting overflow valve, spherically seated solenoid operated directional valve and bidirectional hydraulic lock, be assemblied in the corresponding valve body of redesign, the hole of not waited by five faces brill depths of each module valve body except that inner circumferential surface constitutes oil circuit shown in Figure 1.
The assembly relation of the layout of each valve body and core assembly and valve body provides in Fig. 2 and Fig. 3, below the oil circuit that mainly hole in each module valve body constituted be elaborated, in Fig. 4 to Fig. 6, axial hole is represented with " h ", hole radially represents that with " p " all expanded views are launched by the direction that marks among Fig. 2.
The oil circuit that contains 4 kinds of operating modes in the one way valve overflow valve module shown in Figure 4:
1. when needing the output displacement of regulator solution cylinder pressure, if solenoid operated directional valve a energising, in-line is: P mouth → one way valve S1 → p6 → h1 → p7; Oil return line is: p4 → h4 → p10 → T mouth.
2. when needing the output displacement of regulator solution cylinder pressure, if solenoid operated directional valve b energising, in-line is: P mouth → one way valve S1 → p6 → h1 → p1 → p2 → h3 → p8; Oil return line is: p3 → overflow valve f → p4 → h3 → p10 → T mouth.
3. entered by the P mouth when hydraulic oil, when electromagnetic valve a and b no power, overflow valve f is opened, system oil return, and oil circuit is: p6 → h1 → p1 → open overflow valve f → p4 → h3 → p10 → T mouth.
4. when the fluid power drive source need be from the fuel tank oil suction, oil circuit was: T mouth → one way valve S2 → p5 → h2 → P mouth.
Position when electromagnetic valve shown in Figure 5 is the electromagnet outage:
Steel ball is sealed the path of p13 → p12 and p17 → p16 under the spring force effect, this moment, p12 → p11 and p16 → p15 communicated, and system is through p14 → h5 → p12 → p11 and p18 → h6 → p16 → p15 oil circuit oil return; If electromagnet energising, electromagnet thrust overcomes spring force and frictional force promotes to move on the push rod, move on the steel ball and seal the valve seat lower end, promptly seal the path of p12 → p11 and p16 → p15, this moment, p13 → p12 and p17 → p16 communicated, and system is through p13 → p12 → h5 → p14 and p17 → p16 → h6 → p18 oil circuit oil-feed.
Have only an oil circuit in this electromagnet module, as shown in Figure 2, the oil circuit oil-feed of system in this module when electromagnet is switched on, otherwise, then oil return.
Bidirectional hydraulic lock module shown in Figure 6 comes down to be made up of two one way valves (L1, L2) and push rod, can not close reliably during fuel feeding in system for guaranteeing two one way valves, and the A of module, B mouth are connected with the left and right chamber of hydraulic cylinder respectively.
When electromagnetic valve a energising, the oil-feed route is: p19 → h7 → p20 → p21 → p22 → h9 → A mouth; The oil return route is: B mouth → h10 → p25 → p24 → h8 → p23.
When electromagnetic valve b energising, the oil-feed route is: p23 → h8 → p2 → p25 → h10 → B mouth; The oil return route is: A mouth → h9 → p22 → p21 → p20 → h7 → p19.
Comprehensively above-mentioned, the system that solenoid operated directional valve is carried out switch control is advanced below, the oil return route is summarized as follows:
1. electromagnetic valve a energising
Oil-feed route: P mouth → S1 → p6 → h1 → p7 → p13 → electromagnetic valve a → p12 → h5 → p14 → electromagnet module 2 → p19 → h7 → p20 → L1 → p21 → p22 → h9 → A mouth
Oil return route: B mouth → h10 → p25 → L2 → p24 → h8 → p23 → electromagnet module (6) → p18 → h6 → p16 → p15 → p4 → h4 → p10 → T mouth.
2. electromagnetic valve b energising
Oil-feed route: P mouth → S1 → p6 → h1 → p1 → p2 → h3 → p8 → p17 → electromagnetic valve b → p16 → h6 → p18 → electromagnet module (6) → h8 → p24 → L2 → p25 → h10 → B mouth
Oil return route: A mouth → h9 → p22 → p21 → L1 → p20 → h7 → p19 → electromagnet module (2) → p14 → h5 → p12 → p11 → p3 → p4 → h3 → p10 → T mouth
The sealing of O RunddichtringO is adopted in sealing between each module oil circuit interface, and this valve adopts ball snap ring seal form with the sealing in outside end face, ground and the oil circuit hole, side that is connected; Connection between each module is to connect with 12 trip bolts, as shown in Figure 7.
Claims (9)
1, a kind of hydraulic control combination valve, it is characterized in that: this hydraulic control combination valve is provided with the oil inlet P that is communicated in hydraulic drive source and is communicated in the oil-out T of fuel tank, this hydraulic control combination valve also is provided with and drives the oil pocket that mouthful A and oil return opening B are communicated in the hydraulic cylinder piston both sides respectively, the oil inlet P of this hydraulic control combination valve is to driving mouthful A by the electromagnetic switch valve module, bidirectional hydraulic lock module and oil return opening B to oil-out T by the bidirectional hydraulic lock module, the electromagnetic switch valve module constitutes path simultaneously, the oil inlet P of this hydraulic control combination valve to oil return opening B by the electromagnetic switch valve module, the bidirectional hydraulic lock module with drive mouthful A to oil-out T by the bidirectional hydraulic lock module, the electromagnetic switch valve module constitutes path simultaneously.
2, a kind of hydraulic control combination valve as claimed in claim 1 is characterized in that: be communicated with the overflow valve to the conducting of oil-in direction between the oil circuit of the oil circuit of described connection oil-in and connection oil-out.
3, a kind of hydraulic control combination valve as claimed in claim 1, it is characterized in that: the oil circuit of described connection oil-in is provided with the one way valve of oil-feed direction conducting, the oil circuit between one way valve and the oil-in and be communicated with between the oil circuit of oil-out and be communicated with the one way valve of oil-out to the conducting of oil-in direction.
4, a kind of hydraulic control combination valve as claimed in claim 1, it is characterized in that: described bidirectional hydraulic lock module is provided with the bidirectional hydraulic lock valve body, these valve body two ends are provided with the one-way valve core assembly, the one way valve spool withstands on the valve port towards the centre, be provided with two ends in the valve pocket between the two one way valve spools and be provided with most advanced and sophisticated valve rod, each one way valve valve port both sides all is communicated with oil circuit.
5, a kind of hydraulic control combination valve as claimed in claim 1, it is characterized in that: described electromagnetic switch valve module is provided with two solenoid operated directional valves, the oil inlet and outlet of this solenoid operated directional valve by by the electromagnetic valve piece of Electromagnetic Drive move with two bifurcations in one constitute path.
6, as claim 1 or 2 or 3 or 4 or 5 described a kind of hydraulic control combination valves, it is characterized in that: the valve body of described hydraulic control combination valve ringwise, be provided with in the middle of the hydraulic control combination valve and can hold the through hole that power transmission shaft passes, hydraulic control combination valve outer ring is provided with housing, and the hydraulic control combination valve is nested in the housing.
7, a kind of hydraulic control combination valve as claimed in claim 6, it is characterized in that: the valve body of described hydraulic control combination valve is made as discerptible a plurality of module, connects as a whole by trip bolt between each module.
8, a kind of hydraulic control combination valve as claimed in claim 7, it is characterized in that: the oil circuit interface between described each module is provided with sealing device.
9, a kind of hydraulic control combination valve as claimed in claim 7, it is characterized in that: the oil circuit interface that is connected with the outside on the described hydraulic control combination valve is provided with sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00238948 CN2431397Y (en) | 2000-06-22 | 2000-06-22 | Hydraulic combined valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00238948 CN2431397Y (en) | 2000-06-22 | 2000-06-22 | Hydraulic combined valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2431397Y true CN2431397Y (en) | 2001-05-23 |
Family
ID=33599901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00238948 Expired - Lifetime CN2431397Y (en) | 2000-06-22 | 2000-06-22 | Hydraulic combined valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2431397Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269260A (en) * | 2015-11-12 | 2016-01-27 | 陕西天元智能再制造股份有限公司 | Abrasion-resistant and anticorrosion processing method for combination valve of petroleum industry and combination valve |
| CN106837916A (en) * | 2015-12-03 | 2017-06-13 | 中国航空工业第六八研究所 | A kind of actuator based on one-way hydraulic pump |
| CN109296816A (en) * | 2018-11-28 | 2019-02-01 | 陕西航天泵阀科技集团有限公司 | Mechanical switch dispenser |
-
2000
- 2000-06-22 CN CN 00238948 patent/CN2431397Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269260A (en) * | 2015-11-12 | 2016-01-27 | 陕西天元智能再制造股份有限公司 | Abrasion-resistant and anticorrosion processing method for combination valve of petroleum industry and combination valve |
| CN106837916A (en) * | 2015-12-03 | 2017-06-13 | 中国航空工业第六八研究所 | A kind of actuator based on one-way hydraulic pump |
| CN109296816A (en) * | 2018-11-28 | 2019-02-01 | 陕西航天泵阀科技集团有限公司 | Mechanical switch dispenser |
| CN109296816B (en) * | 2018-11-28 | 2023-12-01 | 陕西航天泵阀科技集团有限公司 | Mechanical switching dispensing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM GROUP DRILLING ENGINEERING TECHNO Free format text: FORMER OWNER: INST. OF WELL DRILLING TECHNOLOGY, ACADEMY OF PETROLEUM EXPLORATION AND DEVELOPM Effective date: 20070720 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070720 Address after: 100083 No. 20, Beijing, Xueyuan Road Patentee after: Drilling Engineering Technology Research Institute, China National Petroleum Corp. Address before: 100083 Dou Xiurong, 20, Beijing, Xueyuan Road Patentee before: Drilling Technology Int., Research Inst. of Petroleum Exploration Development |
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Granted publication date: 20010523 |