Standard tank oil gas recovery system for testing oil gun of gas station

Abstract

The utility model relates to a standard tank oil gas recovery system for testing a gas station oil gun. An oil discharge port of a tank body is communicated with an oil gas inlet of a connector installed on an oil port of an oil depot, an oil discharge pipe of the connector is communicated with the oil port, an exhaust pipe of the connector is communicated with one end of a pump through a switching branch, and the other end of the pump is communicated with an oil gas recovery machine. During use, one end of the pump is disconnected from the end cover gas port through the switching branch, the other end of the pump is communicated with the oil gas recycling machine, oil gas in the tank body is pumped out through the pump and conveyed to the oil gas recycling machine, and at the moment, air can be supplemented in the tank body through the one-way valve on the end cover. The two processes are both in a closed state, oil liquid can be recovered as soon as possible, oil gas volatilized by original oil liquid in the tank body and oil gas volatilized by residual oil drops on the inner wall when the oil drops flow at a high degree of air are conveyed into the oil gas recovery machine, the oil gas at all positions is prevented from being diffused into the environment, and the field safety is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel gun testing equipment, in particular to a standard tank oil and gas recovery system for fuel gun testing at a gas station. Background Art

[0002] The standard tank for testing fuel pumps is a metering container commonly used at gas stations. Its general structure is as follows: a disc 5 with a larger inner diameter than the neck is located at the top of the long neck of the tank body 9. The disc's upper end is opened and fastened with an end cap 2. To use, the fuel pump is inserted into the gun insertion hole in the end cap. The fuel pump then inputs the amount of fuel to be filled. The fuel pump's switch is then pressed, allowing gasoline to enter the tank body through the pump and the fuel pump. When the amount of fuel to be filled is reached, the fuel pump automatically switches off. The operator observes the correspondence between the gasoline level and the scale on the side of the long neck through a connecting pipe on the side of the long neck to read the amount of fuel filled. This is then compared with the fuel level set on the fuel pump to determine whether the fuel pump filling process was correct. After the test is completed, the fuel pump is typically removed, and the oil drain port 11 at the bottom of the tank body is connected to the oil port 15 of the oil reservoir 16, allowing the test gasoline to flow back into the reservoir. In actual use, it was found that the above-mentioned oil drainage process has the following problems: First, due to the volatilization of the oil in the oil depot, the pressure in the oil depot is very high. After the tank body is connected to it, the oil and gas will quickly diffuse from the oil depot to the oil drain port of the tank body. The large pressure causes the oil in the tank body to be discharged slowly, and sometimes there will be residual problems; in addition, even if the oil in the tank body flows back to the oil depot, there will still be some oil droplets on the inner wall of the tank. These oil droplets will evaporate into the environment of the gas station after the tank body is separated from the oil depot oil port, resulting in excessive oil droplets in the air, which does not comply with the relevant regulations on gas station safety management. Utility Model Content

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a standard tank oil and gas recovery system for testing oil guns at gas stations. In the present invention, the oil discharge port of the tank body is connected to the oil and gas inlet of the interface installed on the oil port of the oil depot. The oil discharge pipe of the interface is connected to the oil port. The exhaust pipe of the interface is connected to one end of the pump through a switching branch. The other end of the pump is connected to the oil and gas recovery machine. One end of the pump is also connected to the air port on the end cover of the tank body through a switching branch. During use, the pump extracts the gas at the interface and inputs it into the tank body through the end cover, so that the oil in the tank body flows back to the oil depot through the oil port as quickly as possible. After a period of time, the switching branch disconnects one end of the pump from the end cover air port and connects the other end of the pump to the oil and gas recovery machine. The pump extracts the oil and gas in the tank body and transports it to the oil and gas recovery machine. The separated oil drips back into the oil depot. At this time, the tank body can be replenished with air through the one-way valve on the end cover. The above two processes are both in a closed state, which not only enables the oil to be recovered as quickly as possible, but also the oil vapor volatilized from the original oil in the tank and the oil droplets remaining on the inner wall when the air flows highly are transported to the oil vapor recovery machine, avoiding the release of oil and gas from various places into the environment and ensuring the safety of the site.

[0004] The technical solution adopted by this utility model is:

[0005] A gas and oil recovery system for a standard tank used for testing oil guns at gas stations comprises a tank body, an oil discharge port is provided at the lower end of the tank body, and an end cover is provided on a disc above the tank body, and is characterized in that: the oil discharge port is connected to an interface installed on the oil port of the oil depot, the oil discharge end of the interface is connected to the oil port of the oil depot, the exhaust end of the interface is connected to one end of a pump through a switching branch, and the other end of the pump is connected to an oil and gas recovery machine; one end of the pump is also connected to the air port on the end cover through the switching branch; a one-way valve for supplying air to the tank body is provided on the end cover; a controllable conduction branch is connected in parallel between the switching branch and the other end of the pump.

[0006] Further: the oil drain pipe at the lower end of the interface is installed on the oil port of the oil depot, the exhaust pipe arranged on the side wall of the interface above the oil drain pipe is connected to one end of the pump through the switching branch, and the upper end of the interface above the exhaust pipe is provided with an oil and gas inlet, which is connected to the oil drain port.

[0007] Furthermore: the oil and gas inlet is a pipe mouth with a small diameter, and the oil and gas entering the pipe mouth can be separated from each other in the space where the inner diameter of the interface becomes larger. The liquid enters the oil port of the oil depot through the oil drain pipe at the bottom end of the interface, and the gas enters one end of the pump through the exhaust pipe at the upper end of the interface.

[0008] Furthermore: control valves are provided on the oil and gas inlet and exhaust pipes.

[0009] Furthermore: the switching branch includes two control valves, which are arranged in series on the oil pipe and the pipeline between the two is connected to one end of the pump.

[0010] Furthermore: the controllable conduction branch includes a control valve, which is connected in series to the oil pipe between the switching branch and the other end of the pump.

[0011] Furthermore: the air port on the end cover is provided with a switch valve.

[0012] Furthermore: a switch valve is provided on the oil discharge port.

[0013] The advantages and positive effects of the utility model are:

[0014] In the present invention, the oil discharge port of the tank body is connected to the oil and gas inlet of the interface installed on the oil port of the oil depot, the oil discharge pipe of the interface is connected to the oil port, the exhaust pipe of the interface is connected to one end of the pump through a switching branch, the other end of the pump is connected to the oil and gas recovery machine, and one end of the pump is also connected to the air port on the end cover of the tank body through a switching branch. When in use, the pump extracts the gas at the interface and inputs it into the tank body through the end cover, so that the oil in the tank body flows back to the oil depot through the oil port as quickly as possible; after a period of time, the switching branch disconnects one end of the pump from the end cover air port and connects the other end of the pump to the oil and gas recovery machine, the pump extracts the oil and gas in the tank body and transports it to the oil and gas recovery machine, and the separated oil drips back into the oil depot. At this time, the tank body can be replenished with air through the one-way valve on the end cover. The above two processes are both in a closed state, which not only enables the oil to be recovered as quickly as possible, but also the oil vapor volatilized from the original oil in the tank and the oil droplets remaining on the inner wall when the air flows highly are transported to the oil vapor recovery machine, avoiding the release of oil and gas from various places into the environment and ensuring the safety of the site. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the embodiments. The following embodiments are illustrative rather than restrictive, and the protection scope of the present invention cannot be limited by the following embodiments.

[0017] A standard tank oil and gas recovery system for testing oil guns at gas stations, as shown in the figure, includes a tank body 9, an oil discharge port 11 is provided at the lower end of the tank body, a switch valve 4 is installed in series on the oil discharge port, and an end cover 2 is provided on the disc 5 above the tank body. The innovation of the utility model lies in: the oil discharge port is connected to the interface installed on the oil port 15 of the oil depot 16 (the original valve body hazardous part of the oil port), the oil discharge end of the interface is connected to the oil port of the oil depot, and the exhaust end of the interface is connected to one end of a pump 7 through a switching branch (dashed box A), and the other end of the pump is connected to the oil and gas recovery machine 8; one end of the pump is also connected to the air port 3 on the end cover (a switch valve 4 is installed in series on the air port) through the switching branch; a one-way valve 1 for intake of air into the tank body is provided on the end cover; a controllable conduction branch (dashed box B) is connected in parallel between the switching branch and the other end of the pump.

[0018] The oil drain pipe 14 at the lower end of the interface is installed on the oil port of the oil depot. The exhaust pipe 13 set on the side wall of the interface above the oil drain pipe is connected to one end of the pump through the switching branch. The upper end of the interface above the exhaust pipe is provided with an oil and gas inlet 12, which is connected to the oil drain port. The oil port itself is equipped with a valve body, which can realize the function of opening and closing. Figure 1 Not shown, a control valve 10 is installed in series with each of the oil and gas inlet 12 and the exhaust pipe. The oil and gas inlet has a small inner diameter nozzle. The oil and gas entering the nozzle are separated within the larger inner diameter space inside the inlet interface (the interior corresponding to reference numeral 14). The liquid (gasoline) enters the oil reservoir through the oil drain pipe at the bottom end of the interface, while the gas (volatile gas) enters one end of the pump through the exhaust pipe at the top end of the interface.

[0019] The switching branch includes two control valves 10 within the dashed box A, which are installed in series on the oil pipe 6. The pipe between the two control valves connects to one end of the pump. The controllable conduction branch includes a single control valve 10 within the dashed box B, which is connected in series to the oil pipe between the switching branch and the other end of the pump. A control valve is installed in series on the oil pipe between the controllable conduction branch and the oil vapor recovery unit.

[0020] The use process of this utility model is:

[0021] 1. Before testing, press Figure 1 The structure is well connected.

[0022] The on-off valve of the gas port is closed, and the on-off valve of the oil drain port is closed.

[0023] 2. Insert the fuel gun to test the oil filling amount.

[0024] 3. After the test, pull out the fuel gun and close the gun insertion hole on the end cover.

[0025] Close control valve 10 on the oil line to the refueling recovery machine in the upper right corner. Open the original valve body of the oil port itself (not shown), the on-off valve of the oil discharge port, and the on-off valve of the gas port, and start the pump. The pump extracts the gas (primarily volatile gas from the oil reservoir) through the exhaust pipe at the interface. Through the switching branch, the controllable conduction branch, and the gas port, it is transported to the tank body, pressurizing the gasoline in the tank and accelerating the gasoline flow back to the oil reservoir through the oil port. (The internal space at the mark 14 is large, so the gasoline from the tank flowing there does not affect the outflow of gas from the oil reservoir.)

[0026] 4. After a period of time, it is considered that the gasoline is empty. Turn off the pump and close the valve body of the oil port to separate the oil reservoir.

[0027] Close the control valve on the left side of dotted line A, the on-off valve of the air port, close the control valve in dotted line B, and open the control valve connected to the oil and gas recovery machine.

[0028] The pump starts and extracts gas from the tank through the exhaust pipe, oil and gas inlet, and oil drain port. The one-way valve then replenishes gas into the tank. During this process, the flow of air inside the tank causes the gasoline droplets remaining on the inner wall to evaporate into gas. The extracted gas is then transported to the oil and gas recovery unit for separation. The liquid returns to the oil depot, and the treated gas is discharged into the atmosphere.

[0029] In the above structure, the oil and gas recovery machine is an existing gas station equipment, and its purpose is to separate the gasoline droplets and other gas components in the extracted air, return the gasoline to the oil depot, and discharge the gas into the atmosphere after treatment.

[0030] Control valves can be manually controlled or electrically controlled for safe use at gas stations. On-off valves can also be manually or electrically controlled. Furthermore, the pump, switching branch, controlled conduction branch, oil pipe, and other necessary components can be neatly mounted on a mobile cart for easy movement to different locations at the gas station.

[0031] In the present invention, the oil discharge port of the tank body is connected to the oil and gas inlet of the interface installed on the oil port of the oil depot, the oil discharge pipe of the interface is connected to the oil port, the exhaust pipe of the interface is connected to one end of the pump through a switching branch, the other end of the pump is connected to the oil and gas recovery machine, and one end of the pump is also connected to the air port on the end cover of the tank body through a switching branch. When in use, the pump extracts the gas at the interface and inputs it into the tank body through the end cover, so that the oil in the tank body flows back to the oil depot through the oil port as quickly as possible; after a period of time, the switching branch disconnects one end of the pump from the end cover air port and connects the other end of the pump to the oil and gas recovery machine, the pump extracts the oil and gas in the tank body and transports it to the oil and gas recovery machine, and the separated oil drips back into the oil depot. At this time, the tank body can be replenished with air through the one-way valve on the end cover. The above two processes are both in a closed state, which not only enables the oil to be recovered as quickly as possible, but also the oil vapor volatilized from the original oil in the tank and the oil droplets remaining on the inner wall when the air flows highly are transported to the oil vapor recovery machine, avoiding the release of oil and gas from various places into the environment and ensuring the safety of the site.

Claims

1. A standard tank oil vapor recovery system for testing fuel guns at gas stations, comprising a tank body, an oil discharge port at the lower end of the tank body, and an end cap on a disc above the tank body, characterized in that: The oil discharge port is connected to an interface installed on the oil port of the oil depot, the oil discharge end of the interface is connected to the oil port of the oil depot, the exhaust end of the interface is connected to one end of a pump through a switching branch, and the other end of the pump is connected to the oil and gas recovery machine; one end of the pump is also connected to the air port on the end cover through a switching branch; a one-way valve for supplying air to the tank body is provided on the end cover; a controllable conduction branch is connected in parallel between the switching branch and the other end of the pump.

2. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 1, characterized in that: The oil drain pipe at the lower end of the interface is installed on the oil port of the oil depot, the exhaust pipe arranged on the side wall of the interface above the oil drain pipe is connected to one end of the pump through the switching branch, and an oil and gas inlet is provided at the upper end of the interface above the exhaust pipe, which is connected to the oil drain port.

3. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 2, characterized in that: The oil and gas inlet is a pipe mouth with a small diameter. The oil and gas entering the pipe mouth can separate from each other in the space where the inner diameter of the interface becomes larger. The liquid enters the oil port of the oil depot through the oil drain pipe at the bottom end of the interface, and the gas enters one end of the pump through the exhaust pipe at the upper end of the interface.

4. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 3, characterized in that: Control valves are provided on the oil and gas inlet and exhaust pipes.

5. A standard tank oil vapor recovery system for testing oil guns at gas stations according to claim 1, 2, 3 or 4, characterized in that: The switching branch includes two control valves, which are arranged in series on the oil pipe and the pipe between the two control valves is connected to one end of the pump.

6. A standard tank oil vapor recovery system for testing oil guns at gas stations according to claim 1, 2, 3 or 4, characterized in that: The controllable conduction branch includes a control valve, which is connected in series to the oil pipe between the switching branch and the other end of the pump.

7. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 5, characterized in that: The controllable conduction branch includes a control valve, which is connected in series to the oil pipe between the switching branch and the other end of the pump.

8. A standard tank oil vapor recovery system for testing oil guns at gas stations according to claim 1, 2, 3, 4, or 7, characterized in that: The air port on the end cover is provided with a switch valve.

9. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 5, characterized in that: The air port on the end cover is provided with a switch valve.

10. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 6, characterized in that: The air port on the end cover is provided with a switch valve.

11. A standard tank oil vapor recovery system for testing oil guns at gas stations according to claim 1, 2, 3, 4, 7, 9, or 10, characterized in that: The oil discharge port is provided with a switch valve.

12. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 5, characterized in that: The oil discharge port is provided with a switch valve.

13. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 6, characterized in that: The oil discharge port is provided with a switch valve.

14. The oil vapor recovery system for a standard tank for testing a gas station oil gun according to claim 8, characterized in that: The oil discharge port is provided with a switch valve.

Images