CN210087496U - Oil gas automatic switch-over gas valve integrated configuration - Google Patents
Oil gas automatic switch-over gas valve integrated configuration Download PDFInfo
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- CN210087496U CN210087496U CN201920254596.6U CN201920254596U CN210087496U CN 210087496 U CN210087496 U CN 210087496U CN 201920254596 U CN201920254596 U CN 201920254596U CN 210087496 U CN210087496 U CN 210087496U
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Abstract
The utility model relates to an oil gas automatic switching gas valve composite structure, which comprises a carburetor assembly, a breather pipe, a gas pressure reducing valve, an air inlet joint, a micro-pressure switch and an electromagnetic valve; the initial state of the electromagnetic valve is a normally open state, when the fuel supply is turned to the fuel supply, the micro pressure switch is switched on the electromagnetic valve, and when the fuel supply is turned to the fuel supply, the micro pressure switch is switched off the electromagnetic valve to restore to the fuel state. Its advantages are: the utility model discloses an oil gas automatic switch-over gas valve integrated configuration can realize the area and carry oil gas automatic switch-over, and occupation space is little, and switching speed is fast and the leakproofness is good, can avoid leaking gas, can form a neotype dual fuel switching equipment, has extensive application prospect.
Description
Technical Field
The utility model belongs to the technical field of oil gas automatic switch-over technique and specifically relates to an oil gas automatic switch-over gas valve integrated configuration.
Background
A carburetor (carburetor) is a mechanical device that mixes a certain proportion of gasoline with air under the action of vacuum generated by the operation of an engine. At present, oil-gas conversion of a small-sized gas generator is mostly switched from oil to gas in a mechanical mode, and some gasoline can be even converted after being burnt out in an oil cup, so that fuel oil is wasted, and the conversion process is easy to extinguish without carrying on load, namely, the carrying on load switching can not be realized. Even if the oil in the oil cup is not required to be burnt out, the conversion rotary switch is also required to be installed on the panel, when the oil is closed in a rotating mode, the stroke of the rotary switch is used for connecting a 12V direct current circuit to enable the electromagnetic valve to work, the oil circuit is blocked, switching is achieved, instantaneous switching cannot be achieved, and the switch can be flamed out if the switch is not rotated to a sufficient distance. When switching from gas to oil, the same operation is repeated.
Chinese patent document CN201710468495.4, application date 20170620, with patent names: the utility model provides a dual-purpose carburetor of oil gas of fuel automatic switch-over, disclose a dual-purpose carburetor of oil gas of fuel automatic switch-over, it relates to dual fuel carburetor field, be provided with the second magnet in the connecting bolt, install sealed ejector pin in the one end of connecting bolt, the one end of sealed ejector pin is provided with return spring, the other end of sealed ejector pin is fixed with the main metering orifice that carburetor assembly one end set up, the pressure chamber lid is installed to the below of float chamber, the pressure chamber lid passes through the joint and connects the one end fixed connection of rubber tube, the other end of connecting the rubber tube is connected with the tee bend that admits air, the tee bend that admits air is connected with the one end of gas valve, the other end of gas.
The dual-purpose carburetor of fuel automatic switching of above-mentioned patent document does benefit to pressure and drives the diaphragm, has magnet on the diaphragm, does benefit to the principle that the homopolar repulsion of magnet, and when atmospheric pressure rose, the diaphragm was upwards blockked up by atmospheric pressure, and magnet on the carburetor needle upwards blockked up the inlet port and realized by the repulsion of magnetic force. However, the product needs to provide a moving space for the magnet, has large size specification and quite complex structure, and is easy to cause the risks of air leakage.
In summary, there is a need for an automatic switching gas valve assembly structure capable of realizing automatic switching of oil and gas with load, occupying small space, fast switching speed and good sealing performance, and avoiding gas leakage. The oil-gas automatic switching gas valve combination structure is not reported at present.
Disclosure of Invention
The utility model aims at not enough among the prior art, provide one kind and can realize the area and carry oil gas automatic switch-over, occupation space is little, switching speed is fast and the leakproofness is good, avoids the oil gas automatic switch-over gas valve integrated configuration of gas leakage.
The utility model also aims at providing a switching method of oil gas automatic switch-over gas valve integrated configuration.
In order to achieve the purpose, the utility model adopts the technical proposal that:
an oil gas automatic switching gas valve composite structure comprises a carburetor assembly, a vent pipe, a gas pressure reducing valve, an air inlet joint, a micro-pressure switch and an electromagnetic valve; the gas pressure reducing valve is fixedly arranged at one end of the carburetor assembly; one side surface of the gas pressure reducing valve is provided with an air inlet joint; the bottom of the gas reducing valve is provided with a micro-pressure switch; a solenoid valve is arranged on one side surface of the carburetor assembly; the electromagnetic valve is connected with the micro-pressure switch through a connecting wire; the micro pressure switch is internally provided with a pressure monitoring conversion threshold value, the micro pressure switch switches on and off the electromagnetic valve through the pressure monitoring conversion threshold value to switch between fuel supply and gas supply, the initial state of the electromagnetic valve is a normally open state, when the fuel supply is turned to the gas supply, the micro pressure switch is switched on to switch on the electromagnetic valve, and when the gas supply is turned to the fuel supply, the micro pressure switch switches off the electromagnetic valve to recover to the fuel state.
As a preferred technical solution, the pressure monitoring switching threshold of the micro-pressure switch is 1.5 Kpa.
As a preferable technical proposal, the electromagnetic valve is provided with a movable needle valve and an electromagnetic coil; the electromagnetic coil is arranged on the peripheral surface of the movable needle valve; when the electromagnetic valve is not electrified, the movable needle valve does not close the oil path of the carburetor assembly; when the electromagnetic valve is electrified, the electromagnetic coil generates electromagnetic force to push the movable needle valve to move, so that an oil path of the carburetor assembly is sealed.
As a preferred technical scheme, a three-way joint is arranged in the gas pressure reducing valve, and specifically comprises a first joint, a second joint and a third joint; the first joint is used for establishing connection of the micro-pressure switch; the second joint is connected with the gas pressure reducing valve; and the third joint is used for establishing connection with the air inlet joint.
As a preferred technical solution, the gas valve assembly structure further comprises a central connecting bolt and an auxiliary connecting bolt; the central connecting bolt fixedly connects the carburetor assembly with the gas pressure reducing valve; the gas pressure reducing valve is provided with a connecting hole, the corresponding carburetor assembly is provided with a connecting plate, and the auxiliary connecting bolt is placed in the connecting hole and fixed on the connecting plate.
As a preferred technical scheme, the auxiliary connecting bolts are two in total.
As a preferred technical scheme, the sealing parts of the vent pipe, the carburetor assembly and the gas pressure reducing valve are connected in an airtight and tight fit mode.
As a preferred technical scheme, the connection position of the three-way joint and the gas pressure reducing valve adopts air tight fit connection.
Preferably, the vent tube is disposed outside the carburetor assembly.
In order to achieve the second objective, the utility model adopts the following technical scheme:
a switching method of an oil-gas automatic switching gas valve combined structure comprises the following steps:
step S1, the electromagnetic valve is in a normally open state;
step S2, when the fuel supply is turned to the fuel gas supply, the micro-pressure switch switches on the electromagnetic valve, when the electromagnetic valve is electrified, the electromagnetic coil generates the electromagnetic force to push the movable needle valve to move, thereby closing the oil path of the carburetor assembly;
and step S3, when the fuel gas is supplied to the steering fuel oil, the gas tank is closed, the residual gas in the vent pipe and the fuel gas pressure reducing valve is absorbed by the engine, the pressure is suddenly reduced, and the micro-pressure switch disconnects the electromagnetic valve to recover to the fuel oil state.
The utility model has the advantages that:
1. the utility model discloses an oil gas automatic switch-over gas valve integrated configuration can realize the area and carry oil gas automatic switch-over, and occupation space is little, and switching speed is fast and the leakproofness is good, can avoid leaking gas, can form a neotype dual fuel switching equipment, has extensive application prospect.
2. The vent pipe is distributed on the outer side of the carburetor assembly, so that gas output from the gas pressure reducing valve is directly conveyed to the head of the carburetor assembly through the vent pipe, gas and fuel oil can be placed in the carburetor assembly through independent paths, the situation that the fuel oil and the gas are mixed and enter an engine to be mixed and combusted at the same time can be avoided, the engine works abnormally and runs unstably, unsafe flame and the like can be generated, and the safety performance of a generator set is seriously influenced.
3. The device is provided with a micro pressure switch, a pressure monitoring conversion threshold value is set in the micro pressure switch, the micro pressure switch is set in a rated mode when the pressure conversion threshold value is used, and when the micro pressure switch monitors that the pressure in the gas pressure reducing valve is larger than the pressure conversion threshold value, the micro pressure switch is connected with an electromagnetic valve; when the micro-pressure switch monitors that the pressure in the gas pressure reducing valve is smaller than the pressure conversion threshold value, the micro-pressure switch disconnects the electromagnetic valve, namely the on-off condition of the electromagnetic valve is controlled through the micro-pressure switch to realize the switching of oil gas, and the switching speed is high.
4. The gas pressure reducing valve is used for reducing the pressure of the gas, the gas pressure is adjusted to a reasonable range which can be controlled by the carburetor before the combustible gas is led to the carburetor, and the gas and the air form mixed combustible gas in a certain proportion for the engine to burn and do work.
5. The three-way joint is arranged, and the three-way joint can facilitate connection of all parts, and reduce space occupation rate.
6. The ventilation pipe is connected with the carburetor assembly and the sealing position of the gas pressure reducing valve in an airtight and tight fit manner; the joint of the three-way joint and the gas pressure reducing valve is connected in an airtight and tight fit mode. The technical effect of the design mode is as follows: can carry out inseparable sealing to each junction, it is sealed effectual, can effectively avoid gas leakage.
7. The utility model discloses a gas valve integrated configuration still includes central authorities connecting bolt and supplementary connecting bolt, and the integration is connected, and occupation space is little.
Drawings
Fig. 1 is a schematic diagram of an oil-gas automatic switching gas valve combination structure of the utility model.
Fig. 2 is a schematic structural diagram of the micro-pressure switch.
Fig. 3 is a marked schematic diagram of a central connecting bolt and an auxiliary connecting bolt in an oil-gas automatic switching gas valve combined structure of the utility model.
Fig. 4 is a structural block diagram of a switching method of the oil-gas automatic switching gas valve combination structure of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The reference numerals and components referred to in the drawings are as follows:
1. carburetor assembly 2. vent pipe
3. Gas pressure reducing valve 4. air inlet joint
5. Micro-pressure switch 6 solenoid valve
7. Negative electrode line 8. connecting line
9. Positive line 10, central connecting bolt
11. Auxiliary connecting bolt 12 connecting hole
13. Connecting plate
Example 1
Referring to fig. 1, fig. 1 is a schematic view of an oil-gas automatic switching gas valve assembly structure of the present invention. An oil gas automatic switching gas valve composite structure comprises a carburetor assembly 1, a breather pipe 2, a gas pressure reducing valve 3, an air inlet joint 4, a micro-pressure switch 5 and an electromagnetic valve 6; the gas pressure reducing valve 3 is fixedly arranged at one end of the carburetor assembly 1; an air inlet joint 4 is arranged on one side surface of the gas pressure reducing valve 3; the bottom of the gas relief valve is provided with a micro-pressure switch 5; one end of the breather pipe 2 is connected with a carburetor, and the other end of the breather pipe 2 is connected with a gas pressure reducing valve 3; a solenoid valve 6 is arranged on one side surface of the carburetor assembly 1; the electromagnetic valve 6 is connected with the micro-pressure switch 5 through a connecting wire 8; a negative wire 7 is led out of the gas pressure reducing valve 3; the micro-pressure switch 5 is led with a positive wire 9.
Referring to fig. 2, fig. 2 is a schematic structural diagram of the micro-pressure switch 5. The micro pressure switch 5 is internally provided with a pressure monitoring conversion threshold value, the micro pressure switch 5 switches on and off the electromagnetic valve 6 through the pressure monitoring conversion threshold value to switch between fuel supply and gas supply, the initial state of the electromagnetic valve 6 is a normally open state, when the fuel supply is turned to the fuel supply, the micro pressure switch 5 is switched on and on the electromagnetic valve 6, and when the gas supply is turned to the fuel supply, the micro pressure switch 5 switches off the electromagnetic valve 6 to return to the fuel state.
The electromagnetic valve 6 is internally provided with a movable needle valve and an electromagnetic coil; the electromagnetic coil is arranged on the peripheral surface of the movable needle valve; when the electromagnetic valve 6 is not electrified, the movable needle valve does not close the oil path of the carburetor assembly 1; when the solenoid valve 6 is energized, the solenoid coil generates electromagnetic force to push the movable needle valve to move, thereby closing the oil passage of the carburetor assembly 1.
It should be noted that:
a pressure monitoring conversion threshold value is set in the micro pressure switch 5, the micro pressure switch 5 is set in a rated mode when the pressure conversion threshold value is achieved, and when the micro pressure switch 5 monitors that the pressure in the gas pressure reducing valve 3 is larger than the pressure conversion threshold value, the micro pressure switch 5 is connected with the electromagnetic valve 6; when the micro-pressure switch 5 monitors that the pressure in the gas pressure reducing valve 3 is smaller than the pressure conversion threshold value, the micro-pressure switch 5 disconnects the electromagnetic valve 6. Preferably, the pressure conversion threshold value of the micro-pressure switch 5 is 1.5Kpa, and under the set value, the micro-pressure switch 5 can rapidly, sensitively and reliably respond to turn on and off the carburetor solenoid valve 6 to perform oil-gas switching.
The vent pipe 2 is distributed at the outer side of the carburetor assembly 1, namely, the gas output from the gas pressure reducing valve 3 is directly conveyed to the head part of the carburetor assembly 1 through the vent pipe 2, and the gas and the fuel can be put in through independent paths. The air intake in the traditional scheme is input from the bottom of the carburetor assembly 1, and the air intake mode easily enables different fuels in the carburetor assembly 1 to enter the engine for mixed combustion at the same time, so that the engine works abnormally, the operation is unstable, unsafe flame can be generated, and the like, and the safety performance of the generator set is seriously affected.
The gas inlet joint 4 is used for providing gas input, and the gas inlet joint 4 is used for establishing connection with a gas tank; the gas pressure reducing valve 3 is used for reducing the pressure of the gas, adjusting the gas pressure to a reasonable range which can be controlled by the carburetor before the combustible gas is led to the carburetor, and forming mixed combustible gas with a certain proportion with air for the engine to burn and do work.
The micro-pressure switch 5 is used for monitoring the pressure in the gas pressure reducing valve 3, and when the gas tank opens the valve, gas enters the gas pressure reducing valve 3 through the gas inlet connector 4 at the pressure of 2.8 Kpa. When the micro-pressure switch detects that the pressure in the gas pressure reducing valve 3 is greater than 1.5Kpa, the electromagnetic valve 6 is switched on, the electromagnetic valve 6 is originally in a normally open state (default machine fuel oil starting), an oil way is closed after the electromagnetic valve 6 is switched on, the whole process is not completed within 0.1 second, and loaded oil-gas conversion can be achieved. When the fuel gas is switched to the gasoline, the gas tank is only required to be closed, residual gas in the vent pipe 2 and the fuel gas pressure reducing valve 3 can be completely absorbed by the engine, the pressure is suddenly reduced, and when the pressure is less than 1.5Kpa, the pressure opening microswitch disconnects the electromagnetic valve 6 and restores to the fuel oil state. The switching process is extremely fast, the operation mode is very humanized, and the fuel can be freely switched by only switching on and off the gas tank.
The gas pressure reducing valve 3 is internally provided with a three-way joint, and specifically comprises a first joint, a second joint and a third joint; the first joint is used for establishing connection of the micro-pressure switch 5; the second joint is connected with the gas pressure reducing valve 3; the third joint is used for establishing connection with the air inlet joint 4. Through setting up three way connection in this embodiment, can make things convenient for each part to connect compactly reliably through three way connection, reduce the space occupation rate.
Please refer to fig. 3, fig. 3 is a schematic diagram of a central connection bolt 10 and an auxiliary connection bolt 11 in an oil-gas automatic switching gas valve assembly structure according to the present invention. In the embodiment, a central connecting bolt 10 and an auxiliary connecting bolt 11 are also arranged; the central connecting bolt 10 fixedly connects the carburetor assembly 1 and the gas pressure reducing valve 3; the gas pressure reducing valve 3 is provided with a connecting hole 12, the corresponding carburetor assembly 1 is provided with a connecting plate 13, and the auxiliary connecting bolt 11 is inserted into the connecting hole 12 and fixed on the connecting plate 13. The number of the auxiliary connecting bolts 11 is two. The technical effect of the design scheme is as follows: the gas pressure reducing valve 3 and the carburetor body are integrally connected, and the occupied space is small.
The sealing parts of the vent pipe 2, the carburetor assembly 1 and the gas pressure reducing valve 3 are hermetically and tightly connected; the three-way joint is connected with the gas pressure reducing valve 3 in an airtight and tight fit mode. The technical effect of the design mode is as follows: can carry out inseparable sealing to each junction, it is sealed effectual, can effectively avoid gas leakage.
A negative wire 7 is led out of the gas pressure reducing valve 3; the micro-pressure switch 5 is provided with a positive wire 9, the positive wire 9 is connected with the positive pole of the power supply in the use state, and the negative wire 7 is connected with the negative pole of the power supply. The power supply can be the power supply of the carburetor assembly 1, and has the advantages of convenient material acquisition and low cost.
Example 2
Referring to fig. 4, fig. 4 is a block diagram illustrating a switching method of an oil-gas automatic switching gas valve assembly according to the present invention. A switching method of an oil-gas automatic switching gas valve combined structure comprises the following steps:
step S1, the electromagnetic valve 6 is in a normally open state;
step S2, when the fuel supply is changed to the fuel gas supply, the micro-pressure switch 5 switches on the electromagnetic valve 6, when the electromagnetic valve 6 is electrified, the electromagnetic coil generates the electromagnetic force to push the movable needle valve to move, thereby closing the oil path of the carburetor assembly 1;
step S3, when the fuel gas is supplied to the steering fuel oil, the gas tank is closed, the residual gas in the vent pipe 2 and the fuel gas pressure reducing valve 3 can be completely absorbed by the engine, the pressure is suddenly reduced, the micro-pressure switch 5 disconnects the electromagnetic valve 6, and the fuel oil state is recovered.
The embodiment needs to be explained as follows: the switching method in the embodiment has humanized operation and high switching speed, and the whole process can not reach 0.1 second, so that the loaded oil-gas conversion can be realized.
The utility model discloses an oil gas automatic switch-over gas valve integrated configuration can realize the automatic switch-over of area load oil gas, and occupation space is little, and the leakproofness is good, can avoid leaking gas, can form a novel dual fuel switching equipment, has extensive application prospect; the vent pipe 2 is distributed at the outer side of the carburetor assembly 1, so that gas output from the gas pressure reducing valve 3 is directly conveyed to the head of the carburetor assembly 1 through the vent pipe 2, gas and fuel oil can be placed in through independent paths, and the phenomenon that the fuel oil and the gas are mixed and enter an engine to be mixed and combusted at the same time, which can cause the engine to work abnormally and operate unstably and can generate unsafe flame and the like to cause serious influence on the safety performance of a generator set is avoided; the device is provided with a micro pressure switch 5, a pressure monitoring conversion threshold value is set in the micro pressure switch 5, the micro pressure switch 5 is set in a rated mode when the pressure conversion threshold value is set, and when the micro pressure switch 5 monitors that the pressure in the gas pressure reducing valve 3 is larger than the pressure conversion threshold value, the micro pressure switch 5 is switched on an electromagnetic valve 6; when the micro-pressure switch 5 monitors that the pressure in the gas pressure reducing valve 3 is smaller than a pressure conversion threshold value, the micro-pressure switch 5 switches off the electromagnetic valve 6, namely the on-off condition of the electromagnetic valve 6 is controlled by the micro-pressure switch 5 to realize the switching of oil gas, and the switching speed is high; the gas pressure reducing valve 3 is arranged for reducing the pressure of the gas, the gas pressure is adjusted to a reasonable range which can be controlled by the carburetor before the combustible gas is led to the carburetor, and the gas and the air form mixed combustible gas in a certain proportion for the combustion of the engine to do work; the three-way joint is arranged, so that the connection of all parts can be convenient, the compactness and the reliability can be realized, and the space occupancy can be reduced; the ventilation pipe 2 is connected with the carburetor assembly 1 and the sealing position of the gas pressure reducing valve 3 in an airtight and tight fit manner; the three-way joint is connected with the gas pressure reducing valve 3 in an airtight and tight fit mode. The technical effect of the design mode is as follows: the sealing device can tightly seal each joint, has good sealing effect and can effectively avoid air leakage; the utility model discloses a gas valve integrated configuration still includes central authorities connecting bolt 10 and supplementary connecting bolt 11, and the integration is connected, and occupation space is little.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the method of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.
Claims (9)
1. An oil-gas automatic switching gas valve combination structure is characterized in that the gas valve combination structure comprises a carburetor assembly, a vent pipe, a gas pressure reducing valve, an air inlet joint, a micro-pressure switch and an electromagnetic valve; the gas pressure reducing valve is fixedly arranged at one end of the carburetor assembly; one side surface of the gas pressure reducing valve is provided with an air inlet joint; the bottom of the gas reducing valve is provided with a micro-pressure switch; a solenoid valve is arranged on one side surface of the carburetor assembly; the electromagnetic valve is connected with the micro-pressure switch through a connecting wire;
the micro pressure switch is internally provided with a pressure monitoring conversion threshold value, the micro pressure switch switches on and off the electromagnetic valve through the pressure monitoring conversion threshold value to switch between fuel supply and gas supply, the initial state of the electromagnetic valve is a normally open state, when the fuel supply is turned to the gas supply, the micro pressure switch is switched on to switch on the electromagnetic valve, and when the gas supply is turned to the fuel supply, the micro pressure switch switches off the electromagnetic valve to recover to the fuel state.
2. The automatic oil and gas switching gas valve combination structure according to claim 1, wherein the pressure monitoring conversion threshold of the micro pressure switch is 1.5 Kpa.
3. The automatic oil-gas switching gas valve combination structure according to claim 1, wherein a movable needle valve and an electromagnetic coil are arranged in the electromagnetic valve; the electromagnetic coil is arranged on the peripheral surface of the movable needle valve; when the electromagnetic valve is not electrified, the movable needle valve does not close the oil path of the carburetor assembly; when the electromagnetic valve is electrified, the electromagnetic coil generates electromagnetic force to push the movable needle valve to move, so that an oil path of the carburetor assembly is sealed.
4. The automatic oil-gas switching gas valve combination structure according to claim 1, wherein a three-way joint is arranged in the gas pressure reducing valve, and specifically comprises a first joint, a second joint and a third joint; the first joint is used for establishing connection of the micro-pressure switch; the second joint is connected with the gas pressure reducing valve; and the third joint is used for establishing connection with the air inlet joint.
5. The automatic oil and gas switching gas valve combination structure according to claim 1, wherein the gas valve combination structure further comprises a central connecting bolt and an auxiliary connecting bolt; the central connecting bolt fixedly connects the carburetor assembly with the gas pressure reducing valve; the gas pressure reducing valve is provided with a connecting hole, the corresponding carburetor assembly is provided with a connecting plate, and the auxiliary connecting bolt is placed in the connecting hole and fixed on the connecting plate.
6. The automatic oil and gas switching gas valve combination structure according to claim 5, wherein the number of the auxiliary connecting bolts is two.
7. The automatic oil-gas switching gas valve combination structure according to claim 1, wherein the sealing parts of the vent pipe, the carburetor assembly and the gas pressure reducing valve are connected in an airtight and tight fit manner.
8. The automatic oil-gas switching gas valve combination structure according to claim 4, wherein the joint of the three-way joint and the gas pressure reducing valve is in airtight tight fit connection.
9. The automatic oil and gas switching gas valve combination structure according to claim 1, wherein the vent pipe is distributed outside the carburetor assembly.
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| CN201920254596.6U CN210087496U (en) | 2019-02-28 | 2019-02-28 | Oil gas automatic switch-over gas valve integrated configuration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667686A (en) * | 2019-02-28 | 2019-04-23 | 严格 | A kind of oil gas automatically switches gas valve composite structure and switching method |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667686A (en) * | 2019-02-28 | 2019-04-23 | 严格 | A kind of oil gas automatically switches gas valve composite structure and switching method |
| CN109667686B (en) * | 2019-02-28 | 2023-09-08 | 严格 | Oil-gas automatic switching gas valve combined structure and switching method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230531 Address after: 4-2, Building 45, No. 66 Shimei Avenue, Jieshi Town, Banan District, Chongqing 401346 Patentee after: Chongqing Xiangzhong Gas Equipment Co.,Ltd. Address before: 8-3, Building 5, No. 5 Ronghui Avenue, Lijiatuo Street Office, Banan District, Chongqing 400054 Patentee before: Yan Ge |
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| CU01 | Correction of utility model | ||
| CU01 | Correction of utility model |
Correction item: Patentee Correct: Chongqing Xiangzhong Gas Equipment Co.,Ltd. False: Chongqing Xiangzhong Gas Equipment Co.,Ltd. Number: 24-01 Volume: 39 |