CN104864124A - Oil-gas instantaneous switching device and working mode thereof - Google Patents
Oil-gas instantaneous switching device and working mode thereof Download PDFInfo
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- CN104864124A CN104864124A CN201510286703.XA CN201510286703A CN104864124A CN 104864124 A CN104864124 A CN 104864124A CN 201510286703 A CN201510286703 A CN 201510286703A CN 104864124 A CN104864124 A CN 104864124A
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- valve
- oil
- ball
- valve ball
- valve body
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Classifications
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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
- 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
- F16K11/14—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
- F16K11/16—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane
- F16K11/163—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane only turns
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
- F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to an oil-gas instantaneous switching device and a working mode thereof. The oil-gas instantaneous switching device is mainly used for controlling state switching of an oil-gas carburetor. The oil-gas instantaneous switching device mainly comprises a valve body, a valve rod, valve bases and a microswitch, the valve rod is installed on the valve body and provided with a first valve ball and a second valve ball, and the valve body is provided with an oil inlet pipe joint, an oil outlet pipe joint, a gas inlet pipe joint and a gas outlet pipe joint; the valve bases are mounted at the inner end of the oil inlet pipe joint, the inner end of the oil outlet pipe joint, the inner end of the gas inlet pipe joint and the inner end of the gas outlet pipe joint respectively and are matched with the first valve ball and the second valve ball; the start and stop state of the first valve ball is opposite to that of the second valve ball; the microswitch is installed on the outer wall of the valve body, a shifting lever and a handle are installed at the control end of the valve rod, and the handle is rotated so that the shifting lever can press or loosen a warping plate on the microswitch. When a first valve ball switch is turned on, the microswitch is powered on, and otherwise, the microswitch is powered off. Instantaneous switching between the oil use state and the gas use state of the carburetor can be achieved by rotating the handle, and operation is simple and convenient.
Description
Technical field
The present invention relates to a kind of oil gas moment COMM communication and working method thereof, be mainly used on the double fuel engine machine of oil-gas two-way.
Background technique
Duel fuel engine is that one can use Fuel Petroleum and LP gas fuel as fuel novel electricity generator, and it has high-efficiency low-pollution draining technology feature, has good development prospect.
The generator that double fuel engine unit includes duel fuel engine and is connected with duel fuel engine, but, existing double fuel engine unit in use, due to burnt gas switch and fuel tap position comparatively close, and there is no protective measures, often there is because of the misoperation of user the situation that burnt gas switch and fuel oil oil switch are opened simultaneously, different fuel enters motor mixed combustion simultaneously, engine operation can be caused abnormal, fluctuation of service, and can dangerous flame etc. be produced, the Safety performance of generator set is caused to having a strong impact on.
In order to solve the problem, those skilled in the art devise a kind of double fuel engine unit switching mechanism (patent No. is 2,014 2 0141774. 1), and it comprises: panel, for the appropriate location being installed on motor; LPG rotary switch; Fuel oil oil switch; Two lateral margin places up and down of described panel all have restraining groove, arrange a snap close in each restraining groove; Switch handle, be stuck in described restraining groove by described snap close; Described LPG rotary switch and fuel oil oil switch are fixed on the same face of described panel side by side; The another side of described panel is also provided with a sensitive switch, solenoid valve controller and connecting line, described sensitive switch has a seesaw, and described seesaw be suppressed or be unclamped to the described switching handle that slides can; A kind of mistake proofing design is formed to fuel oil oil switch and LPG construction of switch, can ensure that two switches can not be opened simultaneously, prevent user's faulty operation and cause two kinds of different fuels to enter mixer simultaneously, avoiding and cause the situation of generator abnormal work to occur.
Above-mentioned double fuel engine unit switching mechanism is only a kind of mistake proofing design, although it can ensure that two switches are not simultaneously open, but it once switches the multi-step operation needing to carry out switching handle and switch, and what make the handover operation of fuel oil and combustion gas become is very complicated, and switch speed is slow.
Summary of the invention
Based on above-mentioned the deficiencies in the prior art, the invention provides a kind of oil gas moment COMM communication and working method thereof, this device not only can avoid fuel tap and burnt gas switch to be opened simultaneously, the quick switching of fuel oil and combustion gas can also be realized, and only need once-through operation action, operate very easy.
This oil gas moment COMM communication mainly comprises valve body, valve rod, valve seat and sensitive switch etc.Described valve rod is arranged on valve body; Described valve rod is provided with the first valve ball and the second valve ball, the valve body corresponding with the first valve ball mounting point is provided with inlet connector and flowline connection to subsea, the valve body corresponding with the second valve ball mounting point is provided with suction tude joint and steam outlet pipe joint; Described valve seat is arranged on the inner end of inlet connector, flowline connection to subsea, suction tude joint and steam outlet pipe joint respectively, and matches with the first valve ball and the second valve ball respectively; The open/close states of described first valve ball and the second valve ball is contrary; Described sensitive switch is arranged in the outer wall of valve body, the control end of described valve rod is provided with driving lever and handle, handle with sleeve, and the seesaw on sensitive switch can be suppressed or unclamp to described driving lever.
In order to strengthen the tightness between the second valve ball and valve body, the valve rod of described second valve ball both sides being respectively arranged with seal ring mounting groove, described seal ring mounting groove is provided with seal ring, conflicts on the internal face of valve body in described seal ring periphery.
In order to make valve rod rotate more smooth and easy and improve integrally-built reliability, between described valve rod and valve interior wall, be provided with bearing.Bearing can be positioned by the shaft shoulder on valve rod and the end cap on valve body.The optional common deep groove ball bearing of bearing, when meeting working condition requirement, its price is relatively cheap.Should be understood that the present invention is not limited to and only use deep groove ball bearing, other bearing can also be selected.
For valve body, the structural form of valve body can be varied.But consider integrally-built compactedness, described valve body can be designed to cuboid valve body, be vertically arranged with valve rod in the middle part of described valve body and through hole is installed, the upper surface of described valve body and lower surface are respectively arranged with two pipe interfaces, and described inlet connector, flowline connection to subsea, suction tude joint and steam outlet pipe joint correspondence are arranged on pipe interface.
Realizing prerequisite that oil gas switches instantaneously is that the open/close states of described first valve ball and the second valve ball must be contrary.But it is a lot of to realize being configured with of above-mentioned this purpose, as long as namely the through hole of described first valve ball and the second valve ball staggers mutually completely.But in order to the rationality of overall construction design is considered, described first valve ball is mutually vertical with the through-bore axis on the second valve ball.Should be understood that the present invention is not limited to this kind of situation.
Rationality for valve rod mounting design is considered, the control end of described valve rod is provided with driving lever mounting hole, described driving lever is vertically mounted on the driving lever mounting hole of valve rod control end.
The working method of above-mentioned oil gas moment COMM communication: the flowline connection to subsea of oil gas moment COMM communication and steam outlet pipe joint are connected to Carburetor respectively, and the inlet connector of oil gas moment COMM communication is connected oil sources and source of the gas respectively with suction tude joint; Described sensitive switch is also connected with the solenoid valve on Carburetor, for the keying of Controlling solenoid valve.This solenoid valve is normally closed solenoid valve.Because the first valve ball, the second valve ball and sensitive switch are interlocks mutually.
(1) handle with sleeve, when the second ball valve is opened, the first valve ball is closed, and gas-entered passageway is unimpeded, and oil inlet passage is then closed; Simultaneously, driving lever unclamps the seesaw of sensitive switch, sensitive switch power-off, the closed electromagnetic valve on Carburetor.Now, Carburetor is the combustion gas of engine with fuel.
(2) handle with sleeve, when the first valve ball is opened, the second ball valve is closed, and oil inlet passage is unimpeded, and gas-entered passageway is then closed; Simultaneously, the seesaw of driving lever compacting sensitive switch, sensitive switch is energized, and the solenoid valve on Carburetor is opened, and now, Carburetor is engine with fuel is fuel oil.
In terms of existing technologies, first valve ball and second valve ball of this oil gas moment COMM communication are co-located on a valve rod, and their open/close states is contrary, can directly avoid the first valve ball and the second valve ball to be opened simultaneously, avoid different fuel to enter motor mixed combustion simultaneously, ensure that normal work and the stable operation of motor, also improve the Safety performance of generator set simultaneously.In addition, the first valve ball and second valve ball of this oil gas moment COMM communication are co-located on a valve rod, and valve rod and sensitive switch link mutually, and only need operate a handle just can realize coordinated signals simultaneously, and oil-gas switch operation is very quick, easy.
Accompanying drawing explanation
Fig. 1 is the plan view of valve body in embodiment.
Fig. 2 is the front section view of valve body in embodiment.
Fig. 3 is the mounting structure schematic diagram of valve rod and bearing in embodiment.
Fig. 4 is the mounting structure sectional view of valve body and valve rod in embodiment.
Fig. 5 is the oil gas moment COMM communication sectional view only installing flowline connection to subsea.
Fig. 6 is the sectional view of oil gas moment COMM communication in embodiment.
Fig. 7 is oil gas moment COMM communication plan view in embodiment.
Fig. 8 is oil gas moment COMM communication plan view in embodiment.
Label declaration: 1-valve body 2-valve rod 3-valve seat 4-sensitive switch 5-valve rod installs through hole 6-pipe interface 7-inlet connector 8-flowline connection to subsea 9-suction tude joint 10-steam outlet pipe joint 11-first valve ball 12-second valve ball 13-driving lever 14-handle 15-seesaw 16-seal ring 17-bearing 18-shaft shoulder 19-end cap.
Embodiment
In order to make above-mentioned technology contents of the present invention and construction features can more easily understand by persons skilled in the art, below in conjunction with accompanying drawing and technological points to the application's further instruction.
This oil gas moment COMM communication mainly comprises valve body 1, valve rod 2, valve seat 3 and sensitive switch 4 etc.
The structural form of valve body can be varied.But consider integrally-built compactedness, in the present embodiment, described valve body 1 is designed to cuboid valve body, is vertically arranged with valve rod in the middle part of described valve body 1 and through hole 5 is installed, the upper surface of described valve body 1 and lower surface are respectively arranged with two pipe interfaces 6, namely always have four pipe interfaces.Described pipe interface 6, for arranging female tapped hole, is convenient to be installed into oil connection 7, flowline connection to subsea 8, suction tude joint 9 and steam outlet pipe joint 10.
The valve rod that described valve rod 2 is arranged on valve body 1 is installed on through hole 5.
Described valve rod 2 is arranged in series the first valve ball 11 and the second valve ball 12, the valve body corresponding with the first valve ball 11 mounting point is provided with inlet connector 7 and flowline connection to subsea 8, the valve body corresponding with the second valve ball 12 mounting point is provided with suction tude joint 9 and steam outlet pipe joint 10.
Described valve seat 3 is arranged on the inner end of inlet connector 7, flowline connection to subsea 8, suction tude joint 9 and steam outlet pipe joint 10 respectively, and matches with the first valve ball 11 and the second valve ball 12 respectively.
Realizing prerequisite that oil gas switches instantaneously is that the open/close states of described first valve ball 11 and the second valve ball 12 must be contrary.But the mode realizing above-mentioned this purpose has a lot, such as: as long as the through hole of the first valve ball 11 and the second valve ball 12 staggers mutually completely.But in order to the rationality of overall construction design is considered, described first valve ball 11 is mutually vertical with the through-bore axis on the second valve ball 12.Specific in the present embodiment, as shown in Figures 3 to 6, the through hole of the first valve ball 11 is fore-and-aft directions, and the through hole of the second valve ball 12 is above-below directions.Should be understood that the present invention is not limited to orthogonal situation.
Described sensitive switch 4 is arranged in the outer wall of valve body 1, near the position of valve rod 2 control end.
The control end of described valve rod 2 is provided with driving lever 13 and handle 14, handle with sleeve 14, the seesaw 15 on sensitive switch 4 can be suppressed or unclamp to described driving lever 13.
In order to strengthen the tightness between the second valve ball 12 and valve body 1, the valve rod 2 of described second valve ball 12 both sides being provided with seal ring mounting groove, described seal ring mounting groove is provided with seal ring 16, conflicts on the internal face of valve body in described seal ring periphery.
In order to make valve rod rotate more smooth and easy and improve integrally-built reliability, between described valve rod and valve interior wall, be provided with bearing 17.Bearing 17 can be positioned by the shaft shoulder 18 on valve rod 2 and the end cap 19 on valve body.The optional common deep groove ball bearing of bearing, when meeting working condition requirement, its price is relatively cheap.Should be understood that the present invention is not limited to and only use deep groove ball bearing, other bearing can also be selected.
Rationality for valve rod mounting design is considered, the control end of described valve rod is provided with driving lever mounting hole, described driving lever is vertically mounted on the driving lever mounting hole of valve rod control end.Described driving lever mounting hole is tapped hole, and the mounting end of described driving lever is provided with the outside thread coordinated with this tapped hole.
Working procedure of the present invention: during use, is connected to Carburetor respectively by the flowline connection to subsea 8 of oil gas moment COMM communication and steam outlet pipe joint 10, and the inlet connector 7 of oil gas moment COMM communication is connected oil sources and source of the gas respectively with suction tude joint 9; Described sensitive switch is also connected with the solenoid valve on Carburetor, and for the keying of Controlling solenoid valve, this solenoid valve is normally closed solenoid valve.
Because the first valve ball 11, second valve ball 12 and sensitive switch 4 are interlocks mutually.
Handle with sleeve 14, when the second ball valve 12 is opened, the first valve ball 11 is closed, the station as shown in Fig. 3 to Fig. 6, and gas-entered passageway is unimpeded, and oil inlet passage is then closed; Simultaneously, driving lever 13 unclamps the seesaw 15 of sensitive switch 4, sensitive switch 4 power-off, the closed electromagnetic valve on Carburetor.Now, Carburetor is the combustion gas of engine with fuel.
Handle with sleeve 14, when the first valve ball 11 is opened, the second ball valve 12 is closed, and oil inlet passage is unimpeded, and gas-entered passageway is then closed; Simultaneously, the seesaw 15 of sensitive switch 4 suppressed by driving lever 13, and sensitive switch is energized, and the solenoid valve on Carburetor is opened, and now, Carburetor is engine with fuel is fuel oil.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, include in scope of patent protection of the present invention.
Claims (7)
1. an oil gas moment COMM communication, it mainly comprises valve body, valve rod, valve seat and sensitive switch, it is characterized in that: described valve rod is arranged on valve body; Described valve rod is provided with the first valve ball and the second valve ball, the valve body corresponding with the first valve ball mounting point is provided with inlet connector and flowline connection to subsea, the valve body corresponding with the second valve ball mounting point is provided with suction tude joint and steam outlet pipe joint; Described valve seat is arranged on the inner end of inlet connector, flowline connection to subsea, suction tude joint and steam outlet pipe joint respectively, and matches with the first valve ball and the second valve ball respectively; The open/close states of described first valve ball and the second valve ball is contrary; Described sensitive switch is arranged in the outer wall of valve body, the control end of described valve rod is provided with driving lever and handle, handle with sleeve, and the seesaw on sensitive switch can be suppressed or unclamp to described driving lever.
2. oil gas moment COMM communication according to claim 1, it is characterized in that: the valve rod of described second valve ball both sides is respectively arranged with seal ring mounting groove, described seal ring mounting groove is provided with seal ring, conflicts on the internal face of valve body in described seal ring periphery.
3. oil gas moment COMM communication according to claim 1, is characterized in that: be provided with bearing between described valve rod and valve interior wall.
4. oil gas moment COMM communication according to claim 1, it is characterized in that: described valve body is cuboid valve body, be vertically arranged with valve rod in the middle part of described valve body and through hole is installed, the upper surface of described valve body and lower surface are respectively arranged with two pipe interfaces, and described inlet connector, flowline connection to subsea, suction tude joint and steam outlet pipe joint correspondence are arranged on pipe interface.
5. oil gas moment COMM communication according to claim 1, is characterized in that: described first valve ball is mutually vertical with the through-bore axis on the second valve ball.
6. oil gas moment COMM communication according to claim 1, it is characterized in that: the control end of described valve rod is provided with driving lever mounting hole, described driving lever is vertically mounted on the control end of valve rod.
7. the working method of the oil gas moment COMM communication according to any one of claim 1-6, it is characterized in that: first the flowline connection to subsea of oil gas moment COMM communication and steam outlet pipe joint are connected to Carburetor respectively, and the inlet connector of oil gas moment COMM communication is connected oil sources and source of the gas respectively with suction tude joint; Described sensitive switch is also connected with the solenoid valve on Carburetor, and for the keying of Controlling solenoid valve, described solenoid valve is normally closed solenoid valve; (1) handle with sleeve, when the second ball valve is opened, the first valve ball is closed, and gas-entered passageway is unimpeded, and oil inlet passage is then closed; Simultaneously, driving lever unclamps the seesaw of sensitive switch, sensitive switch power-off, the closed electromagnetic valve on Carburetor; Now, Carburetor is the combustion gas of engine with fuel;
(2) handle with sleeve, when the first valve ball is opened, the second ball valve is closed, and oil inlet passage is unimpeded, and gas-entered passageway is then closed; Simultaneously, the seesaw of driving lever compacting sensitive switch, sensitive switch is energized, and the solenoid valve on Carburetor is opened; Now, Carburetor is engine with fuel is fuel oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286703.XA CN104864124B (en) | 2015-05-30 | 2015-05-30 | Oil gas moment switching device and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510286703.XA CN104864124B (en) | 2015-05-30 | 2015-05-30 | Oil gas moment switching device and its working method |
Publications (2)
| Publication Number | Publication Date |
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| CN104864124A true CN104864124A (en) | 2015-08-26 |
| CN104864124B CN104864124B (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510286703.XA Expired - Fee Related CN104864124B (en) | 2015-05-30 | 2015-05-30 | Oil gas moment switching device and its working method |
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| Country | Link |
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| CN (1) | CN104864124B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508660A (en) * | 2015-12-24 | 2016-04-20 | 重庆安来动力机械有限公司 | Oil and gas dualpurpose switch |
| CN106285968A (en) * | 2016-08-30 | 2017-01-04 | 重庆凯龙科技有限公司 | Check valve-type oil gas converts switch |
| CN106439111A (en) * | 2016-11-29 | 2017-02-22 | 冯彦 | Water mixing valve and water mixing valve group |
| CN109199576A (en) * | 2018-10-29 | 2019-01-15 | 郑州大学第附属医院 | Hysteroscope lower monopole operates instrument |
| CN109199575A (en) * | 2018-10-29 | 2019-01-15 | 郑州大学第附属医院 | Bipolar operation instrument under hysteroscope |
| CN111964067A (en) * | 2020-08-20 | 2020-11-20 | 广西中烟工业有限责任公司 | Oil-gas dual-purpose boiler fuel automatic switching control system |
| CN115875341A (en) * | 2022-12-26 | 2023-03-31 | 常州市科普特佳顺机床附件有限公司 | Well real hydro-cylinder that revolves of pressure cylinder control |
| CN109199575B (en) * | 2018-10-29 | 2024-06-21 | 郑州大学第一附属医院 | Endoscopic bipolar instrument |
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| FR19470E (en) * | 1915-02-11 | Jean Francois Rolland | Safety valve for the distribution of flammable liquids at various points located on a single pipe | |
| US3595270A (en) * | 1970-01-20 | 1971-07-27 | Andale Co | Plug valve construction and operating mechanism |
| CN201588978U (en) * | 2009-12-01 | 2010-09-22 | 陈孝生 | Linkage three-way spherical valve set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105508660A (en) * | 2015-12-24 | 2016-04-20 | 重庆安来动力机械有限公司 | Oil and gas dualpurpose switch |
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| CN106285968A (en) * | 2016-08-30 | 2017-01-04 | 重庆凯龙科技有限公司 | Check valve-type oil gas converts switch |
| CN106439111A (en) * | 2016-11-29 | 2017-02-22 | 冯彦 | Water mixing valve and water mixing valve group |
| CN109199576A (en) * | 2018-10-29 | 2019-01-15 | 郑州大学第附属医院 | Hysteroscope lower monopole operates instrument |
| CN109199575A (en) * | 2018-10-29 | 2019-01-15 | 郑州大学第附属医院 | Bipolar operation instrument under hysteroscope |
| CN109199575B (en) * | 2018-10-29 | 2024-06-21 | 郑州大学第一附属医院 | Endoscopic bipolar instrument |
| CN111964067A (en) * | 2020-08-20 | 2020-11-20 | 广西中烟工业有限责任公司 | Oil-gas dual-purpose boiler fuel automatic switching control system |
| CN111964067B (en) * | 2020-08-20 | 2022-11-29 | 广西中烟工业有限责任公司 | Oil-gas dual-purpose boiler fuel automatic switching control system |
| CN115875341A (en) * | 2022-12-26 | 2023-03-31 | 常州市科普特佳顺机床附件有限公司 | Well real hydro-cylinder that revolves of pressure cylinder control |
| CN115875341B (en) * | 2022-12-26 | 2024-06-07 | 常州市科普特佳顺机床附件有限公司 | Middle-solid rotary oil cylinder controlled by booster cylinder |
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| CN104864124B (en) | 2017-07-28 |
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