Gas-liquid executing mechanism with liquid level automatic detection function and working method thereof
Technical Field
The invention relates to the technical field of pipeline control, in particular to a gas-liquid executing mechanism with a liquid level automatic detection function and a working method thereof.
Background
Currently, in the global scope, a gas-liquid executing mechanism of an emergency cut-off valve of a natural gas pipeline generally adopts pipeline natural gas as a power source of the executing mechanism, and the pipeline gas enters a gas-liquid tank of the executing mechanism to drive a valve to open or close by pressing hydraulic oil to conduct pressure. However, when the air pressure of the pipeline is greatly changed, particularly when the pipeline running at low pressure for a long time is in a problem, a corresponding system is lacked for control; or when the operating air source pressure is too low and the valve cannot be opened or closed, corresponding processing components are lacked, so that the air-liquid executing mechanism is provided in the prior art, and the technical problems are effectively solved.
However, when the gas-liquid executing mechanism in the prior art works, the liquid level of the liquid in the gas-liquid tank cannot be detected at any time, so that the gas-liquid tank cannot be normally used after the liquid level of the liquid in the gas-liquid tank is reduced to a certain degree, and the working efficiency of the gas-liquid executing mechanism can be greatly influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides the gas-liquid executing mechanism with the liquid level automatic detection function and the working method thereof, and the liquid level of the liquid in the gas-liquid tank is monitored through resistance change in a series circuit, so that the monitoring sensitivity is high, the cost is low, and the overhaul is very convenient.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a gas-liquid actuating mechanism with liquid level automated inspection function, includes the gas-liquid jar, the gas-liquid jar includes jar body and cover, still includes metal conducting rod, second conductor, metal wire, first conductor, stopper, electrically conductive metal frame and conductive post, metal conducting rod and electrically conductive metal frame are installed respectively in the jar internally, electrically conductive metal frame is hollow structure, and its inside has placed insulating stopper, be provided with the mounting hole on the terminal surface of electrically conductive metal frame bottom, be provided with the through-hole on the side, the one end of conductive post passes mounting hole fixed connection in stopper bottom, and the other end is connected on first conductor, conductive post movable mounting is in the mounting hole, when the liquid level descends together, the conductive post is contacted with electrically conductive metal frame, the cover is equipped with the second conductor on the metal conducting rod, the second conductor is movable set up on the metal conducting rod when the liquid level descends, the second conductor is along with the decline, second conductor is connected in series connection terminal and second conductor, second conductor and second conductor have the connection in series connection terminal, the second conductor is connected in series connection terminal and the metal conductor, and the second conductor is connected in series connection terminal, and the circuit has been connected in the series connection terminal respectively.
In the above structure: the invention is provided with a metal conductive rod, a second conductor, a metal wire, a first conductor, a limiting block, a conductive metal frame and a conductive column, wherein one end of the conductive column is fixedly connected to the bottom of the limiting block through a mounting hole, the other end of the conductive column is connected to the first conductor, the conductive column is movably mounted in the mounting hole, and when the liquid level is lowered, the first conductor descends along with the liquid level, and the conductive column is contacted with the conductive metal frame; the metal conductive rod is sleeved with a second conductor, the second conductor is movably arranged on the metal conductive rod, when the liquid level is reduced, the second conductor descends along with the liquid level, the second conductor is contacted with the metal conductive rod, the metal conductive rod and the metal conductive frame are respectively connected into the series circuit through the serial circuit and the measuring terminal, the resistance value in the series circuit is measured through the measuring terminal, when a full amount of liquid natural gas exists in the tank body, the first conductor and the second conductor float on the horizontal liquid level of the same natural gas liquid, at the moment, the limiting block floats in the conductive metal frame, the conductive column floats upwards in the conductive metal frame, and as the conductive column contacts with the conductive metal frame, the second conductor contacts with the metal conductive rod, the first conductor is connected with the second conductor, the passage of the series circuit can be realized, the measurement of the measurement terminal can show that the resistance of the series circuit is minimum at this moment, when the tank lacks liquid natural gas, the first conductor and the second conductor are not on the same horizontal plane, the second conductor slides downwards until falling on the liquid level of the natural gas liquid and floating above, the second conductor is suspended in the tank under the action of the limiting block, therefore, the length of the conductive column is lengthened, at this moment, the length of the metal wire is not changed, the length of the conductive column is lengthened from the conductive metal frame, and because the conductive column is contacted with the conductive metal frame, the second conductor is contacted with the metal conductive rod, the first conductor is connected with the second conductor, the passage of the series circuit can still be realized, and the measurement of the measurement terminal can show that the resistance of the series circuit is maximum at this moment, the invention is realized by utilizing the physical law: the same material with uniform mass distribution has the advantages of larger length, larger resistance, smaller current, namely larger resistance, longer length of the conductive column and lower liquid level.
As a further improvement of the invention: the metal conductive rod connecting device is characterized in that fixing holes are respectively formed in the tank cover, a metal conductive rod connecting head and a conductive metal frame connecting head are respectively fixed in the fixing holes, the conductive metal frame is connected to the conductive metal frame connecting head, the metal conductive rod is connected to the metal conductive rod connecting head, and the series circuit is connected to the metal conductive rod connecting head and the conductive metal frame connecting head respectively.
As a further improvement of the invention: nut caps are respectively arranged on the metal conductive rod connector and the conductive metal frame connector, and the metal conductive rod and the conductive metal frame are respectively connected to the metal conductive rod connector and the conductive metal frame connector in a threaded manner.
In the above structure: the tank cover is provided with the fixing holes respectively, the metal conductive rod connector and the conductive metal frame connector are fixed in the fixing holes respectively to achieve fixing and installation, the conductive metal frame is connected to the conductive metal frame in a threaded mode, the metal conductive rod is connected to the metal conductive rod connector in a threaded mode, disassembly, overhaul and cleaning are convenient, the series circuit is connected to the metal conductive rod connector and the conductive metal frame connector respectively, detection of the length distance of the conductive column and the passage of the series circuit are achieved, after parts inside the tank body are installed, the tank cover is fixed, and sealing of the tank body is achieved.
As a further improvement of the invention: the series circuit comprises a switch, a resistor and a rechargeable battery, wherein a connector of the switch is connected with a wire, the open-end wire is connected to a measuring terminal, the measuring terminal is connected to the resistor through the wire, the resistor is connected to the rechargeable battery through the wire, the rechargeable battery is connected to a metal wire rod connector through the wire, and the conductive metal frame connector is connected to the other connector of the switch through the wire.
In the above structure: the series circuit comprises a switch, a resistor and a rechargeable battery, the power supply of the series circuit is the rechargeable battery, the replacement and the charging are convenient, the resistor is a rated resistor, the resistance change in the series circuit cannot be influenced, and the measuring terminal can conveniently determine the liquid level of the liquid level through the resistance change in the series circuit.
As a further improvement of the invention: the measuring terminal comprises a processor, a universal meter and a display screen, wherein the universal meter and the display screen are respectively connected to the processor, the universal meter is connected into the series circuit, when the universal meter detects that the resistance in the series circuit changes, the processor reads the resistance data of the universal meter, and the resistance data are displayed as liquid level information through the display screen after being converted.
In the above structure: the measuring terminal comprises a processor, a universal meter and a display screen, when the liquid level in the tank body changes, the length of the conductive column changes along with the change, the resistance in the series circuit is detected to change through universal change, at the moment, the processor reads the resistance data of the universal meter, the resistance data are displayed as liquid level information through the display screen after data conversion, the universal meter is convenient for staff to observe, the universal meter can detect small resistance change, and when the automatic detection of the liquid level in the tank body is used, larger errors cannot be generated.
As a further improvement of the invention: the tank also comprises a fixing support, wherein the fixing support is fixed on the outer wall of the tank body.
In the above structure: the tank body is fixed and installed by arranging the fixing support.
As a further improvement of the invention: and the outer wall of the metal wire is coated with an insulating rubber sleeve.
In the above structure: the outer wall of the metal wire is coated with the insulating rubber sleeve, so that the aging and abrasion of the metal wire are reduced, the buoyancy of the metal wire is increased, and the metal wire has certain floating capacity.
As a further improvement of the invention: the buoyancy layer is foam.
In the above structure: the buoyancy layer is foam, and the buoyancy layer arranged at the bottoms of the first conductor and the second conductor can be attached to the liquid level of natural gas liquid in the tank body.
The working method of the gas-liquid executing mechanism with the liquid level automatic detection function comprises the following steps,
Step 1: the parts are arranged on the surface of the base,
Opening a can cover, respectively fixing a metal conductive rod connector and a conductive metal frame connector in a fixing hole, connecting a conductive metal frame on the conductive metal frame in a threaded manner, sleeving a second conductor on the metal conductive rod, connecting the metal conductive rod on the metal conductive rod connector in a threaded manner, connecting a series circuit on a measuring terminal, respectively connecting the series circuit on the metal conductive rod connector and the conductive metal frame connector after the series circuit is connected, respectively placing the conductive metal frame and the metal conductive rod in a can body after the assembly is completed, fixing the can cover, closing the can body, and then injecting natural gas liquid into the can body through an injection hole on the can cover;
step2: the liquid level is monitored and the liquid level is measured,
When the switch is turned on, the rechargeable battery starts to supply power, the circuit is connected in series, when full amount of liquid natural gas exists in the tank body, the first conductor and the second conductor float on the horizontal liquid level of the same natural gas liquid, the resistance of the series circuit is minimum, the liquid level of the liquid in the tank body is highest, the liquid natural gas in the tank body is slowly pumped out, when the liquid natural gas in the tank body drops to a preset height, the first conductor and the second conductor are not on the same horizontal plane, the second conductor slides downwards until falling on the liquid level of the natural gas liquid and floating above, the length of the conductive column is lengthened, the resistance of the series circuit can be seen on the display screen through measurement of the measurement terminal, and the liquid level display is reduced to the lowest.
Compared with the prior art, the invention has the beneficial effects that:
The first conductor and the second conductor are connected through the metal wire, connection and access of a series circuit are realized, automatic liquid level measurement is realized through resistance change of the whole circuit caused by length change of the conductive column when the measuring terminal detects liquid level lifting, and the main basis of detection is that the same material with uniform mass distribution is longer in length, larger in resistance and smaller in current, namely, the longer in resistance is, the longer in length of the conductive wire is, and the lower in liquid level is;
The invention can automatically detect the internal liquid level when the liquid level of the natural gas rises and falls by combining a simple circuit, has simple and convenient structure, low cost and high monitoring sensitivity, and is extremely convenient for overhauling and replacing extremely cold.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic illustration of the location of a first electrical conductor and a second electrical conductor in a liquid full condition of a gas-liquid tank in accordance with the present invention;
Fig. 3 is a schematic diagram of the positions of the first conductor and the second conductor in the liquid-lack state of the gas-liquid tank in the present invention.
List of reference numerals:
1. a switch; 2. a series circuit; 3. a measurement terminal; 4. a resistor; 5. a rechargeable battery; 6. a metal conductive rod connector; 7. a gas-liquid tank; 8. a fixed bracket; 9. a metal conductive rod; 10. a second conductor; 11. a metal wire; 12. a first conductor; 13. a limiting block; 14. a conductive metal frame; 15. a conductive post; 16. and a conductive metal frame connector.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
As shown in fig. 1-3: the invention provides a gas-liquid actuating mechanism with a liquid level automatic detection function, which comprises a gas liquid tank 7, wherein the gas liquid tank 7 comprises a tank body, a tank cover, a metal conducting rod 9, a second conducting body 10, a metal conducting wire 11, a first conducting body 12, a limiting block 13, a conducting metal frame 14 and a conducting column 15, wherein the metal conducting rod 9 and the conducting metal frame 14 are respectively arranged in the tank body, the conducting metal frame 14 is of a hollow structure, an insulating limiting block 13 is arranged in the conducting metal frame, a mounting hole is formed in the end face of the bottom of the conducting metal frame 14, a through hole is formed in the side face of the conducting metal frame 14, one end of the conducting column 15 penetrates through the mounting hole and is fixedly connected to the bottom of the limiting block 13, the other end of the conducting column 15 is connected to the first conducting body 12, the conducting column 15 is movably arranged in the mounting hole, the first conducting body 12 descends along with the liquid level when the liquid level is reduced, the conducting column 15 is in contact with the conducting metal frame 14, the second conducting body 10 is sleeved on the conducting rod 9, the second conducting body 10 is movably arranged on the conducting metal conducting rod 9, the second conducting body 10 is connected to the second conducting body 10 in series with a measuring circuit 2 through the second conducting body and the second conducting body 10, and the second conducting body 10 is connected to a measuring circuit 2 in series, and the second conducting body is connected to the second conducting body 2 through the conducting body 3 and the conducting body 2.
The application is provided with a metal conductive rod 9, a second conductor 10, a metal wire 11, a first conductor 12, a limiting block 13, a conductive metal frame 14 and a conductive column 15, wherein one end of the conductive column 15 passes through a mounting hole and is fixedly connected to the limiting block 13, the other end of the conductive column is connected with the first conductor 12, the conductive column 15 is movably arranged in the mounting hole, when the liquid level is lowered, the first conductor 12 descends along with the liquid level, and the conductive column 15 is contacted with the conductive metal frame 14; the metal conductive rod 9 is sleeved with a second conductor 10, the second conductor 10 is movably arranged on the metal conductive rod 9, when the liquid level is reduced, the second conductor 10 descends along with the liquid level, the second conductor 10 contacts with the metal conductive rod 9, the metal conductive rod 9 and the metal conductive frame are respectively connected into the series circuit 2 through the serial circuit 2 and the measuring terminal 3, the resistance value in the series circuit 2 is measured through the measuring terminal 3, when the full amount of liquid natural gas exists in the tank body, the first conductor 12 and the second conductor 10 float on the horizontal liquid level of the same natural gas liquid, at the moment, the limiting block 13 floats in the conductive metal frame 14, the conductive column 15 floats highest in the conductive metal frame 14, the second conductor 10 contacts with the metal conductive rod 9 due to the contact of the conductive column 15 and the conductive metal frame 14, the first conductor 12 is connected with the second conductor 10, the passage of the series circuit 2 can be realized, the measurement of the measurement terminal 3 can be used for obtaining, at the moment, the resistance of the series circuit 2 is minimum, when the tank body lacks liquid natural gas, the first conductor 12 and the second conductor 10 are not on the same horizontal plane, the second conductor 10 slides downwards until falling on the liquid surface of the natural gas liquid and floating above, the second conductor 10 is suspended in the tank body under the action of the limiting block 13, therefore, the length of the conductive column 15 is lengthened, at the moment, the length of the metal wire 11 is not changed, the length of the conductive column 15 is lengthened from the conductive metal frame 14, the second conductor 10 is contacted with the metal conductive rod 9 due to the contact of the conductive column 15 and the conductive metal frame 14, the passage of the series circuit 2 can still be realized by connecting the first conductor 12 with the second conductor 10, the measurement of the measurement terminal 3 can be obtained, the resistance of the series circuit 2 is at its maximum at this point, the application is achieved by using the laws of physics: the same material with uniform mass distribution has a longer length, a larger resistance, a smaller current, i.e. the larger resistance, a longer length of the conductive column 15 and a lower liquid level.
In this embodiment: the tank cover is provided with fixing holes respectively, the fixing holes are respectively provided with a metal conductive rod connector 6 and a conductive metal frame connector 16, the conductive metal frame 14 is connected to the conductive metal frame connector 16, the metal conductive rod 9 is connected to the metal conductive rod connector 6, and the series circuit 2 is connected to the metal conductive rod connector 6 and the conductive metal frame connector 16 respectively. Nut caps are respectively arranged on the metal conductive rod connector 6 and the conductive metal frame connector 16, and the metal conductive rod 9 and the conductive metal frame 14 are respectively connected to the metal conductive rod connector 6 and the conductive metal frame connector 16 in a threaded manner.
The tank cover is provided with the fixing holes respectively, the metal conductive rod connector 6 and the conductive metal frame connector 16 are fixed in the fixing holes respectively to achieve fixing and installation, the conductive metal frame 14 is connected to the conductive metal frame 14 in a threaded mode, the metal conductive rod 9 is connected to the metal conductive rod connector 6 in a threaded mode, disassembly, overhaul and cleaning are convenient, the series circuit 2 is connected to the metal conductive rod connector 6 and the conductive metal frame connector 16 respectively to achieve detection of the length distance of the conductive column 15 and the passage of the series circuit 2, after the internal parts of the tank body are installed, the tank cover is fixed, and sealing of the tank body is achieved.
In this embodiment: the series circuit 2 comprises a switch 1, a resistor 4 and a rechargeable battery 5, wherein one connector of the switch 1 is connected with a wire, the open-end wire is connected with a measuring terminal 3, the measuring terminal 3 is connected with the resistor 4 through the wire, the resistor 4 is connected with the rechargeable battery 5 through the wire, the rechargeable battery 5 is connected with a metal wire 11 bar connector through the wire, and the conductive metal frame connector 16 is connected with the other connector of the switch 1 through the wire.
The series circuit 2 comprises a switch 1, a resistor 4 and a rechargeable battery 5, the power supply of the series circuit 2 is the rechargeable battery 5, the replacement and charging are convenient, the resistor 4 is a rated resistor 4, the resistance change in the series circuit 2 cannot be influenced, and the measuring terminal 3 can conveniently determine the liquid level of the liquid level through the resistance change in the series circuit 2.
In this embodiment: the measuring terminal 3 comprises a processor, a universal meter and a display screen, wherein the universal meter and the display screen are respectively connected to the processor, the universal meter is connected to the series circuit 2, when the universal meter detects that the resistance in the series circuit 2 changes, the processor reads the resistance data of the universal meter, and the resistance data are displayed as liquid level information through the display screen after being converted.
The measuring terminal 3 comprises a processor, a universal meter and a display screen, when the liquid level in the tank body changes, the length of the conductive column 15 changes along with the change, the resistance in the series circuit 2 is detected through universal change, at the moment, the processor reads the resistance data of the universal meter, the resistance data are displayed as liquid level information through the display screen after data conversion, the observation of workers is facilitated, the universal meter can detect small resistance change, and when the automatic detection of the liquid level in the tank body is used, larger errors cannot be generated.
In this embodiment: the tank also comprises a fixing support 8, wherein the fixing support 8 is fixed on the outer wall of the tank body. The tank body is fixed and installed by arranging the fixing support 8.
In this embodiment: the outer wall of the metal wire 11 is coated with an insulating rubber sleeve. The outer wall of the metal wire 11 is coated with an insulating rubber sleeve, so that the aging and abrasion of the metal wire 11 are reduced, the buoyancy of the metal wire 11 is increased, and the metal wire has certain floating capacity.
In this embodiment: the buoyancy layer is foam. The buoyancy layer is foam, and the buoyancy layers arranged at the bottoms of the first conductor 12 and the second conductor 10 can be attached to the liquid surface of the natural gas liquid in the tank body.
The working method of the gas-liquid executing mechanism with the liquid level automatic detection function comprises the following steps,
Step 1: the parts are arranged on the surface of the base,
Opening the can cover, respectively fixing the metal conductive rod connector 6 and the conductive metal frame connector 16 in the fixing holes, connecting the conductive metal frame 14 on the conductive metal frame 14 in a threaded manner, sleeving the second conductor 10 on the metal conductive rod 9, connecting the metal conductive rod 9 on the metal conductive rod connector 6 in a threaded manner, connecting the series circuit 2 on the measurement terminal 3, connecting the series circuit 2 to the metal conductive rod connector 6 and the conductive metal frame connector 16 respectively after connection,
After the assembly is completed, the conductive metal frame 14 and the metal conductive rod 9 are respectively placed into a tank body, a tank cover is fixed, the tank body is closed, and then natural gas liquid is injected into the tank body through an injection hole on the tank cover;
step2: the liquid level is monitored and the liquid level is measured,
When the switch 1 is opened, the rechargeable battery 5 starts to supply power, the circuit 2 is connected, when a full amount of liquid natural gas exists in the tank body, the first conductor 12 and the second conductor 10 float on the horizontal liquid surface of the same natural gas liquid, the resistance of the series circuit 2 is minimum, the liquid level of the liquid in the tank body is highest, the liquid natural gas in the tank body is pumped out slowly, when the liquid natural gas in the tank body drops to a preset height, the first conductor 12 and the second conductor 10 are not on the same horizontal surface, the second conductor 10 slides downwards until falling on the liquid level of the natural gas liquid and floating above, the length of the conductive column 15 is prolonged, the resistance of the series circuit 2 is maximum, the liquid level display is reduced to the lowest, and the measurement of the measurement terminal 3 can be seen on the display screen.
The first conductor 12 and the second conductor 10 are connected through the metal wire 11, so that connection and passage of the series circuit 2 are realized, automatic liquid level measurement is realized through resistance change of the whole circuit caused by length change of the conductive column 15 when the measurement terminal 3 detects liquid level lifting, the main basis of detection is that the same materials with uniform mass distribution are detected, the longer the length is, the larger the resistance is, the smaller the current is, namely the larger the resistance is, the longer the length of the conductive wire is, and the lower the liquid level is;
The invention can automatically detect the internal liquid level when the liquid level of the natural gas rises and falls by combining a simple circuit, has simple and convenient structure, low cost and high monitoring sensitivity, and is extremely convenient for overhauling and replacing extremely cold.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the present invention in any other way, but is intended to cover any modifications or equivalent variations according to the technical spirit of the present invention, which fall within the scope of the present invention as defined by the appended claims.