Handheld gas-liquid ratio detector

Abstract

The utility model discloses a handheld gas-liquid ratio detector which comprises a shell, a first cavity and a second cavity are formed in the shell, an oil conveying pipe is arranged at the upper end of the shell, an adapter is arranged at one end of the oil conveying pipe, a gas conveying pipe is communicated between the adapter and the second cavity, and a pressure sensor is arranged at the lower end of the first cavity. A limiting plate is arranged at the upper end of the pressure sensor, a first piston plate is slidably connected into the first cavity, a first spring is arranged between the first piston plate and the limiting plate, a first air hole is formed in one end of the first cavity, a second piston plate is connected into the second cavity, and a supporting rod is arranged at the lower end of the second piston plate. And a second air hole is formed in one end of the second cavity, and an air guide pipe is communicated between the first air hole and the second air hole. The oil gun gas-liquid ratio detector is convenient to carry and use, can rapidly detect the gas-liquid ratio of oil guns at different positions, and improves the detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid ratio detection, in particular to a handheld gas-liquid ratio detector. Background Technique

[0002] The gas-liquid ratio refers to the oil output and the gas return volume of a gasoline filling gun, and is also an important indicator for measuring whether the secondary oil-gas recovery system in the station is working properly. Oil-gas recovery is a high-tech energy-saving and environmental protection technology. The oil-gas recovery technology is used to recover the oil gas emitted during the storage, transportation and unloading of oil products, prevent air pollution caused by oil gas volatilization, eliminate potential safety hazards, improve the energy utilization rate and reduce economic losses. In the prior art, a gas-liquid ratio detector is usually used to detect the gas-liquid ratio of gas stations. However, the existing gas-liquid ratio detectors are relatively large in volume and not convenient to carry around. When detecting different filling guns, it is necessary to move the gas-liquid ratio detector between each fuel dispenser. Due to the large volume of the gas-liquid ratio detector, it is also relatively troublesome to move, resulting in slow detection efficiency. Therefore, there is an urgent need for a more convenient gas-liquid ratio detector for use and carrying. Content of the Utility Model

[0003] The purpose of the utility model is to provide a handheld gas-liquid ratio detector, which can be conveniently carried and used, and can quickly complete the detection of the gas-liquid ratio of filling guns at different positions, improving the detection efficiency.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A handheld gas-liquid ratio detector, including a housing. One end inside the housing is provided with a first cavity, and the other end inside the housing is provided with a second cavity. The upper end of the housing is provided with an oil delivery pipe communicating with the first cavity. The end of the infusion pipe away from the housing is provided with an adapter, and an air delivery pipe is communicated between the adapter and the second cavity. One end of the air delivery pipe is provided with a valve;

[0006] A plurality of vertically arranged limiting rods are equidistantly arranged at the lower end inside the first cavity. A pressure sensor is arranged at the lower end inside the first cavity. The upper end of the pressure sensor is provided with a limiting plate slidably connected to each limiting rod. Inside the first cavity, a horizontally arranged first piston plate slidably connected to each limiting rod is arranged above the limiting plate. A first spring is arranged between the first piston plate and the limiting plate. A first air hole is opened at one end inside the first cavity near the upper end of the limiting plate;

[0007] A horizontally arranged second piston plate is slidably connected inside the second cavity. A support rod is vertically arranged at the lower end of the second piston plate. A sleeve rod slidably connected to the outer shell is slidably connected to the outside of the support rod. A limit block slidably connected to the sleeve rod is arranged at the lower end of the support rod. A second spring is arranged between the limit block and the sleeve rod on the outside of the support rod. The lower end of the sleeve rod passes through the outer shell and is provided with a clamping block. A second air hole is opened near the second piston plate at one end inside the second cavity. An air guide pipe is communicated between the first air hole and the second air hole. A third air hole communicated with the second cavity is opened at the lower end of the outer shell near the sleeve rod. A piston block slidably connected to the third air hole is arranged at the upper end of the clamping block.

[0008] By adopting the above technical solution, when detecting the air-liquid ratio of gasoline, first connect the fuel gun to the adapter, and then start the fuel gun to refuel. The gasoline enters the first cavity in the outer shell through the fuel pipe, pushing the first piston plate to move. The first piston plate compresses the first spring. The elastic force of the first spring pushes the limit plate to slide, generating a thrust on the pressure sensor. As the first piston plate moves, the gas in the first cavity enters the air guide pipe through the first air hole, and then enters the second cavity through the second air hole, which can push the second piston plate downward. The second piston plate drives the support rod to move downward, the support rod drives the limit block to move downward, the limit block pushes the sleeve rod to move downward, the clamping block moves downward with the sleeve box, and the piston block moves out of the third air hole. During the refueling process of the fuel gun, there will be air return, and the gas in the second cavity is extracted through the air pipe, so the gas in the second cavity decreases, and the second piston plate will move upward. If the second piston plate moves upward to the point where the piston block blocks the third air hole, when the second piston plate continues to move upward, it will drive the support rod to slide relative to the sleeve rod, the support rod drives the limit block to move and compresses the second spring, the fuel gun stops refueling, the valve is closed, and then the fuel gun is pulled out of the adapter. At this time, the value of the pressure sensor is recorded as the first value, then the valve is opened, and then it is observed whether the value of the pressure sensor changes, and the value of the pressure sensor is recorded as the second value, so as to judge the size of the air-liquid ratio.

[0009] A further setting of the present utility model is that an operation table is arranged at the front end of the outer shell, and a display screen and a plurality of control buttons arranged at equal intervals are arranged at the front end of the operation table.

[0010] A further setting of the present utility model is that a pull rope is arranged between the left and right ends of the outer shell.

[0011] A further setting of the present utility model is that a storage battery for providing power is arranged at one end of the outer shell.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] First, it can be conveniently carried and used, and can conveniently detect the size of the gas-liquid ratio, improving the detection efficiency. This new experiment model can be used handheld, facilitating the detection of the gasoline ratio for different fuel dispensers. By adding gasoline to the first cavity, the first piston plate is pushed to move and compress the first spring. The first spring generates elastic force to push the limit plate, and the magnitude of the elastic force generated by the first spring is detected by the pressure sensor, thereby determining the amount of gasoline added to the first cavity. When the first piston plate moves, the gas in the first cavity is pushed into the second cavity, and then the piston plate can be pushed to move downward, and the fuel dispenser returns gas. The gas in the second cavity is extracted through the air pipe, causing the second piston plate to move upward. When refueling stops, by observing the numerical change of the pressure sensor and the position of the piston block, the size of the gas-liquid ratio can be judged, and thus the gas-liquid ratio of the fuel dispenser can be determined.

[0014] Second, it can conveniently remove the gasoline added to the first cavity after the gas-liquid ratio is detected. Open the valve and pull the latch to drive the second piston plate to move, extract the external gas from the air pipe into the second cavity, then close the valve, push the gas in the second cavity into the first cavity, drive the first piston plate to move upward, and push the gasoline in the first cavity out from the fuel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the partial cross-sectional view of the present utility model;

[0017] Figure 3 shows the second air hole and the third air hole of the present utility model;

[0018] Figure 4 shows the storage battery of the present utility model;

[0019] Figure 5 shows the interior of the housing when using the present utility model to measure the gas-liquid ratio equal to 1;

[0020] Figure 6 shows the interior of the housing when using the present utility model to measure the gas-liquid ratio less than 1;

[0021] Figure 7 shows the interior of the housing when using the present utility model to measure the gas-liquid ratio greater than 1.

[0022] In the figure: 1, outer shell; 2, first cavity; 3, limiting rod; 4, first piston plate; 5, first spring; 6, limiting plate; 7, pressure sensor; 8, first air hole; 9, air duct; 10, second cavity; 11, second air hole; 12, second piston plate; 13, support rod; 14, sleeve rod; 15, limiting block; 16, second spring; 17, third air hole; 18, clamping block; 19, oil pipeline; 20, adapter; 21, air pipeline; 22, valve; 23, operation console; 24, display screen; 25, control button; 26, storage battery; 27, pull rope; 28, piston block. Detailed implementation mode

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Example, refer to Figure 1-7, Handheld gas-liquid ratio detector, including a housing 1. There is an operating platform 23 at the front end of the housing 1. There is a display screen 24 on the upper side of the front end of the operating platform 23. Four control buttons 25 are equally spaced on the lower side of the front end of the operating platform 23. There is a storage battery 26 for providing power on the lower side of the rear end of the housing 1. There is a pull rope 27 between the left and right ends of the housing 1. There is a first cavity 2 at the left end inside the housing 1. There is a second cavity 10 at the right end inside the housing 1. There is an oil delivery pipe 19 connected to the first cavity 2 on the left side of the upper end of the housing 1. One end of the oil delivery pipe 19 away from the housing 1 is provided with an adapter 20. There is an air delivery pipe 21 connecting the outside of the adapter 20 and the second cavity 10. One end of the air delivery pipe 21 close to the housing 1 is provided with a valve 22.

[0028] There are two limiting rods 3 spaced inside the first cavity 2. There is a pressure sensor 7 in the middle of the lower end inside the first cavity 2. There is a limiting plate 6 horizontally arranged above the pressure sensor 7 and slidably connected to each limiting rod 3. Inside the first cavity 2, there is a first piston plate 4 horizontally arranged and slidably connected to each limiting rod 3 above the limiting plate 6. There is a first spring 5 between the first piston plate 4 and the limiting plate 6. The gasoline added through the fuel gun can push the first piston plate 4 to slide and compress the first spring 5. The elastic force generated by the compression of the first spring 5 pushes the limiting plate 6 to exert a thrust on the pressure sensor 7, so that it is convenient to measure the amount of gasoline and the amount of returned gas added by the fuel gun. A first air hole 8 is opened near the limiting plate 6 at the left end inside the first cavity 2.

[0029] There is a second piston plate 12 horizontally arranged and slidably connected inside the second cavity 10. There is a support rod 13 vertically arranged in the middle of the lower end of the second piston plate 12. There is a sleeve rod 14 slidably connected to the outside of the support rod 13. There is a limiting block 15 slidably connected to the lower end of the support rod 13 and the sleeve rod 14. There is a second spring 16 between the outside of the support rod 13 and the sleeve rod 14 between the limiting block 15 and the sleeve rod 14, which can drive the limiting block 15 to reset and thus drive the second piston plate 12 to reset. The lower end of the sleeve rod 14 passes through the second cavity 10 and is provided with a clamping block 18. A second air hole 11 is opened near the upper end of the second piston plate 12 at the right end inside the second cavity 10. There is a guide pipe 9 connecting the first air hole 8 and the second air hole 11. There is a third air hole 17 communicating with the second cavity 10 opened near the sleeve rod 14 at the lower end of the housing 1. There is a piston block 28 slidably connected to the third air hole 17 on the upper end of the clamping block 18, which can facilitate the balance of the air pressure at the upper and lower ends of the second piston plate 12.

[0030] Usage method: When detecting the air-liquid ratio of gasoline, first connect the fuel gun to the adapter 20, then start the fuel gun to refuel. The gasoline enters the first cavity 2 in the housing 1 through the fuel pipe 19, pushing the first piston plate 4 to move. The first piston plate 4 compresses the first spring 5. The elastic force of the first spring 5 pushes the limit plate 6 to slide, generating a thrust on the pressure sensor 7. As the first piston plate 4 moves, the gas in the first cavity 2 enters the air guide pipe 9 through the first air hole 8, and then enters the second cavity 10 through the second air hole 11, which can push the second piston plate 12 downward. The second piston plate 12 drives the support rod 13 to move downward, and the support rod 13 drives the limit block 15 to move downward. The limit block 15 pushes the sleeve rod 14 to move downward, and the clamping block 18 moves downward with the sleeve box. The piston block 28 moves out of the third air hole 17. During the refueling process of the fuel gun, air will return. The gas in the second cavity 10 is extracted through the fuel pipe 21, so the gas in the second cavity 10 decreases, and the second piston plate 12 will move upward. Then the fuel gun stops refueling. At this time, record the value of the pressure sensor 7 as the first value. Then pull out the fuel gun from the adapter 20, and then observe whether the value of the pressure sensor 7 changes. Record the value of the pressure sensor 7 again as the second value, so as to judge the size of the air-liquid ratio.

[0031] When the pressure sensor 7 does not change and the piston block 28 blocks the third air hole 17, the air-liquid ratio at this time is equal to 1, as Figure 5 shown; when the value of the pressure sensor 7 does not change and the piston block 28 does not block the third air hole 17, the air-liquid ratio is less than 1 at this time. Then close the valve 22, push the clamping block 18 to make the piston block 28 block the third air hole 17, drive the second piston plate 12 to move upward, push the gas in the second cavity 10 into the first cavity 2, and then the first piston plate 4 moves upward to push out part of the gasoline in the first cavity 2. Record the value of the pressure sensor 7 as the third value. At this time, the air-liquid ratio is the ratio of the third value to the first value, as Figure 6 shown.

[0032] When the value of the pressure sensor 7 decreases, the gas-liquid ratio is greater than 1 at this time. The decrease in the value of the pressure sensor 7 is because the gas return volume is greater than the refueling volume. Then, the gas in the second cavity 10 extracted through the gas pipeline 21 is greater than the gas entering the second cavity 10 from the first cavity 2, which will cause the second piston plate 12 to move upward and exceed the height of the second air hole 11. At the same time, the support rod 13 drives the limit block 15 to compress the second spring 16. The second piston plate 12 continues to move upward, then extracts the gas in the first cavity 2 into the second cavity 10, increasing the distance that the first piston plate 4 moves downward during refueling. After pulling out the fuel gun, the valve 22 opens, and then under the action of the second spring 16, the second piston plate 12 returns to its original position, then pushes the gas in the second cavity 10 into the first cavity 2, causing the first piston plate 4 to move upward, and the value of the pressure sensor 7 decreases. Then, the gas-liquid ratio at this time is the ratio of the first value to the second value, as Figure 7 shown.

[0033] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A handheld gas-liquid ratio detector, comprising a housing (1), characterized in that: A first cavity (2) is provided at one end of the shell (1), a second cavity (10) is provided at the other end of the shell (1), an oil pipeline (19) connected to the first cavity (2) is provided at the upper end of the shell (1), an adapter (20) is provided at one end of the oil pipeline away from the shell (1), an air pipeline (21) is connected between the adapter (20) and the second cavity (10), and a valve (22) is provided at one end of the air pipeline (21); A plurality of vertically arranged limit rods (3) are arranged at equal intervals at the lower end of the first cavity (2); a pressure sensor (7) is arranged at the lower end of the first cavity (2); a limit plate (6) slidably connected to each limit rod (3) is arranged at the upper end of the pressure sensor (7); a first piston plate (4) horizontally arranged and slidably connected to each limit rod (3) is slidably connected above the limit plate (6) in the first cavity (2); a first spring (5) is arranged between the first piston plate (4) and the limit plate (6); and a first air hole (8) is opened at one end of the first cavity (2) near the upper end of the limit plate (6); The interior of the second cavity (10) is slidably connected to a second piston plate (12) arranged horizontally, a support rod (13) is vertically arranged at the lower end of the second piston plate (12), the outer side of the support rod (13) is slidably connected to a sleeve rod (14) slidably connected to the outer shell (1), the lower end of the support rod (13) is provided with a limit block (15) slidably connected to the sleeve rod (14), the outer side of the support rod (13) is provided with a second spring (16) between the limit block (15) and the sleeve rod (14), and the sleeve rod (14) is provided with a second spring (16) between the limit block (15) and the sleeve rod (14). A block (18) is provided at the lower end of the housing (1) and passes through the housing (14); a second air hole (11) is provided at one end of the interior of the second cavity (10) near the second piston plate (12); an air guide pipe (9) is connected between the first air hole (8) and the second air hole (11); a third air hole (17) connected to the second cavity (10) is provided at the lower end of the housing (1) near the sleeve rod (14); a piston block (28) slidably connected to the third air hole (17) is provided at the upper end of the block (18).

2. The handheld gas-liquid ratio detector according to claim 1, characterized in that: An operating table (23) is arranged at the front end of the housing (1), and a display screen (24) and a plurality of control buttons (25) arranged at equal intervals are arranged at the front end of the operating table (23).

3. The handheld gas-liquid ratio detector according to claim 1 is characterized in that: A drawstring (27) is provided between the left and right ends of the housing (1).

4. The handheld gas-liquid ratio detector according to claim 1, characterized in that: A storage battery (26) for providing electric power is arranged at one end of the housing (1).

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