A detection device for gasoline station oil gas recovery

Abstract

The utility model discloses a kind of detection devices for oil station oil gas recovery, it is related to oil gas recovery detection technical field, including oil tank, the top of oil tank is equipped with oil inlet, oil inlet is equipped with oil gun sealing joint, the oil gun sealing joint includes the connection pipe fixedly connected with oil inlet, the top outside of the connection pipe is slidably connected with pressure cylinder along vertical direction, the inside of pressure cylinder is equipped with a pressure step, first elastic sealing ring, limiting cylinder and second elastic sealing ring are sequentially arranged from top to bottom between the pressure step and the upper end surface of connection pipe, the side of limiting cylinder is equipped with pipeline interface;The outside of the connection pipe is rotatably connected with adjusting sleeve, adjusting sleeve is threadedly connected with pressure cylinder, for driving pressure cylinder lifting. The detection device for oil station oil gas recovery, by the way of first inserting gun nozzle and then shrinking seal, can reduce its insertion resistance, while ensuring sealing effect, so as to ensure the accuracy of flow detection.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas recovery detection technology, specifically to a detection device for oil and gas recovery at gas stations. Background Technology

[0002] In the testing of vapor recovery systems at gas stations, the accuracy of vapor flow rate is a key indicator for evaluating system performance and environmental compliance. In existing technologies, to detect the flow rate parameters of the vapor inlet of the fuel nozzle, a sealing sleeve is typically fitted over the vapor inlet. This sleeve is then sealed and connected to the fuel inlet, and a pipeline connects the sleeve to the outlet of a vapor recovery detector. Simultaneously, the inlet of the detector is connected to the outlet of the fuel tank, thus forming a closed detection loop. The vapor recovery detector then measures the gas flow rate.

[0003] Currently, rubber rings are commonly used as the sealing element between the sealing cylinder and the oil gun's suction port. To ensure no gas leakage during testing, the rubber ring needs to be tightly fitted with an interference fit. However, an overly tight fit will significantly increase the resistance to inserting the oil gun tip, requiring operators to apply extra force to complete the assembly, and may even damage the equipment due to forced insertion. If a looser rubber ring is used to reduce operational difficulty, although it can improve the ease of tip insertion, the sealing interface is prone to gas leakage due to gaps, causing the suction flow rate measured by the detector to be lower than the true value, affecting the accuracy of the test.

[0004] Therefore, it is necessary to propose a detection device for oil and gas recovery at gas stations to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this utility model is to provide a detection device for oil and gas recovery at gas stations, so as to solve the problem of inconvenient sealing of the oil and gas intake port of existing oil and gas recovery detection devices mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a detection device for oil and gas recovery at a gas station, comprising an oil tank, an oil inlet at the top of the oil tank, an oil gun sealing connector installed at the oil inlet, the oil gun sealing connector including a connecting pipe fixedly connected to the oil inlet, a pressure cylinder slidably connected to the outer side of the top of the connecting pipe in a vertical direction, a pressure step provided on the inner side of the pressure cylinder, a first elastic sealing ring, a limiting cylinder and a second elastic sealing ring arranged sequentially from top to bottom between the pressure step and the upper end face of the connecting pipe, a pipe interface provided on one side of the limiting cylinder; an adjusting sleeve rotatably connected to the outer side of the connecting pipe, the adjusting sleeve being threadedly connected to the pressure cylinder for driving the pressure cylinder to rise and fall.

[0009] Preferably, the connecting pipe is threaded to the oil inlet, and a sealing gasket is provided between the connecting pipe and the oil inlet.

[0010] Preferably, the top of the pressure cylinder is provided with a funnel-shaped opening.

[0011] Preferably, a limiting block is fixedly connected to the outer side of the top end of the connecting pipe, and a limiting groove adapted to the limiting block is opened on the inner side of the pressure cylinder.

[0012] Preferably, the adjusting sleeve is fitted on the outside of the connecting tube, and both the outside of the connecting tube and the inside of the adjusting sleeve are provided with limiting rings, with a planar bearing provided between the two limiting rings.

[0013] Preferably, the pressure cylinder has a connecting port at a position corresponding to the pipe interface.

[0014] Preferably, the oil tank is provided with an exhaust port, which is connected to the air inlet of the oil and gas recovery detector through an air inlet pipe, and the air outlet of the oil and gas recovery detector is connected to a pipeline interface through an air outlet pipe.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a detection device for oil and gas recovery at gas stations, which has the following beneficial effects:

[0017] 1. The gas station's vapor recovery detection device, by setting up a sealing joint for the fuel nozzle, adopts a method of inserting the nozzle first and then shrinking to seal, which reduces the insertion resistance and avoids damage to the fuel nozzle; at the same time, its inner diameter shrinkage can provide a better sealing effect to ensure the accuracy of the detection.

[0018] 2. The detection device for oil and gas recovery at this gas station can seal the oil and gas recovery hole on the nozzle by rotating the adjusting sleeve, which is easy to operate; at the same time, it has a simple structure and is easy to disassemble and maintain. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the oil gun sealing joint of this utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of the oil gun sealing connector of this utility model.

[0022] In the diagram: 1. Air inlet pipe; 2. Oil gun sealing connector; 4. Air outlet pipe; 5. Oil vapor recovery detector; 6. Oil tank; 8. Pressure cylinder; 9. First elastic sealing ring; 10. Limiting cylinder; 11. Second elastic sealing ring; 12. Adjusting sleeve; 13. Connecting pipe; 14. Oil inlet; 16. Limiting groove; 17. Limiting block; 19. Connecting pipe port; 20. Pipe interface; 21. Nozzle; 22. Oil vapor recovery hole; 23. Flat bearing; 24. Limiting ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-3 As shown, a detection device for oil and gas recovery at a gas station includes an oil tank 6. An oil inlet 14 is provided at the top of the oil tank 6. An oil gun sealing connector 2 is installed at the oil inlet 14. The oil gun sealing connector 2 includes a connecting pipe 13 fixedly connected to the oil inlet 14. A pressure cylinder 8 is slidably connected to the outer side of the top of the connecting pipe 13 in a vertical direction. A pressure step is provided on the inner side of the pressure cylinder 8. A first elastic sealing ring 9, a limiting cylinder 10, and a second elastic sealing ring 11 are arranged sequentially from top to bottom between the pressure step and the upper end face of the connecting pipe 13. A pipe interface 20 is provided on one side of the limiting cylinder 10. A connecting port 19 is provided at the position corresponding to the pipe interface 20 on the pressure cylinder 8. An adjusting sleeve 12 is rotatably connected to the outer side of the connecting pipe 13. The adjusting sleeve 12 is threadedly connected to the pressure cylinder 8 and is used to drive the pressure cylinder 8 to rise and fall.

[0025] During the oil gun vapor recovery test, the nozzle 21 of the oil gun is inserted into the pressure cylinder 8. Then, the adjusting sleeve 12 is rotated clockwise. Under the action of the thread, the adjusting sleeve 12 drives the pressure cylinder 8 downward, reducing the distance between the pressure step and the upper end face of the connecting pipe 13. With the cooperation of the limiting cylinder 10, the first elastic sealing ring 9 and the second elastic sealing ring 11 are squeezed, causing elastic deformation. The rubber gathers towards the center, causing the inner diameter to shrink, thereby sealing the gap between the limiting cylinder 10 and the nozzle 21. This prevents the oil vapor recovery hole 22 from drawing gas from inside the oil tank 6 and external ambient gas through this gap, thus affecting the accuracy of the gas-liquid ratio test. Through the above settings, the method of inserting the nozzle 21 first and then shrinking and sealing reduces the insertion resistance, avoids damage to the oil gun, and provides a better sealing effect to ensure the accuracy of the test.

[0026] To facilitate the disassembly and assembly of the oil gun sealing connector 2, the connecting pipe 13 and the oil inlet 14 are connected by threads. A sealing gasket is installed between the connecting pipe 13 and the oil inlet 14 to prevent oil and gas from leaking from the threaded connection.

[0027] To facilitate the insertion of the nozzle 21 into the oil gun sealing connector 2, the top of the pressure cylinder 8 is provided with a funnel-shaped opening for guiding the nozzle 21.

[0028] In some embodiments, a limiting block 17 is fixedly connected to the outer side of the top end of the connecting tube 13, and a limiting groove 16 adapted to the limiting block 17 is provided on the inner side of the pressure cylinder 8. Under the limiting of the limiting groove 16 and the limiting block 17, the connecting tube 13 can only slide vertically, preventing the pressure cylinder 8 from rotating with the adjusting sleeve 12 during the rotation of the adjusting sleeve 12.

[0029] Specifically, the adjusting sleeve 12 is fitted onto the outside of the connecting pipe 13. Both the outer side of the connecting pipe 13 and the inner side of the adjusting sleeve 12 are provided with limiting rings 24, and a planar bearing 23 is provided between the two limiting rings 24. The adjusting sleeve 12 is limited by the cooperation of the two limiting rings 24. Furthermore, the planar bearing 23 between the two limiting rings 24 reduces friction between them, preventing the connecting pipe 13 from rotating when the limiting rings 24 are rotated.

[0030] Specifically, the oil tank 6 is equipped with an exhaust port, which is connected to the air inlet of the vapor recovery detector 5 via an air inlet pipe 1. The air outlet of the vapor recovery detector 5 is connected to the pipeline interface 20 via an air outlet pipe 4. During vapor recovery detection, the vapor recovery hole 22 draws in air. The gas in the oil tank 6 flows into the vapor recovery detector 5 through the air inlet pipe 1, and then enters the limiting cylinder 10 through the air outlet pipe 4 and is drawn away by the vapor recovery hole 22. The vapor recovery detector 5 detects the amount of air drawn in, and the refueling amount is obtained through the fuel dispenser. The ratio of the two is the gas-liquid ratio.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for oil and gas recovery of gas station, comprising a tank (6), an oil inlet (14) is arranged at the top end of the tank (6), characterized in that: An oil gun sealing connector (2) is installed at the oil inlet (14). The oil gun sealing connector (2) includes a connecting pipe (13) fixedly connected to the oil inlet (14). A pressure cylinder (8) is slidably connected to the outer side of the top of the connecting pipe (13) in the vertical direction. A pressure step is provided on the inner side of the pressure cylinder (8). A first elastic sealing ring (9), a limiting cylinder (10), and a second elastic sealing ring (11) are arranged sequentially from top to bottom between the pressure step and the upper end face of the connecting pipe (13). A pipe interface (20) is provided on one side of the limiting cylinder (10). An adjusting sleeve (12) is rotatably connected to the outside of the connecting pipe (13). The adjusting sleeve (12) is threadedly connected to the pressure cylinder (8) and is used to drive the pressure cylinder (8) to rise and fall.

2. The detection device for oil and gas recovery in gas stations according to claim 1, characterized in that: The connecting pipe (13) is connected to the oil inlet (14) by a thread, and a sealing gasket is provided between the connecting pipe (13) and the oil inlet (14).

3. The detection device for oil and gas recovery in gas stations according to claim 1, characterized in that: The top of the pressure cylinder (8) is provided with a funnel-shaped opening.

4. The detection device for oil and gas recovery in gas stations according to claim 1, characterized in that: A limiting block (17) is fixedly connected to the outer side of the top end of the connecting pipe (13), and a limiting groove (16) adapted to the limiting block (17) is opened on the inner side of the pressure cylinder (8).

5. The detection device for oil and gas recovery at a gas station according to claim 1, characterized in that: The adjusting sleeve (12) is fitted on the outside of the connecting tube (13). Both the outside of the connecting tube (13) and the inside of the adjusting sleeve (12) are provided with limiting rings (24), and a plane bearing (23) is provided between the two limiting rings (24).

6. The detection device for oil and gas recovery at a gas station according to claim 1, characterized in that: The pressure cylinder (8) has a connecting port (19) at the position corresponding to the pipe interface (20).

7. The detection device for oil and gas recovery at a gas station according to claim 1, characterized in that: The oil tank (6) is provided with an exhaust port, which is connected to the air inlet of the oil and gas recovery detector (5) through an air inlet pipe (1), and the air outlet of the oil and gas recovery detector (5) is connected to the pipeline interface (20) through an air outlet pipe (4).

Images