Oil gas recovery valve with anti-leakage function

Abstract

The utility model discloses an oil gas recovery valve with an anti-leakage function, and relates to the technical field of oil gas recovery valves. The oil and gas recovery valve with the leakage-proof function comprises a base, a fixing mechanism is arranged on the upper surface of the base, an outer wall is fixedly connected to the upper surface of the base, an oil outlet pipe is arranged on one side of the outer wall, an exhaust pipe is arranged on one side of the outer wall, and an auxiliary gas inlet pipe is arranged on one side of the outer wall; a main air inlet pipe is arranged on one side of the outer wall, a top cover is arranged on the upper surface of the outer wall, an anti-leakage mechanism is arranged in the outer wall, and a valve body is arranged in the outer wall. When the oil gas recovery valve with the leakproof function is used and the valve body leaks, the sealing gasket is arranged to isolate the valve body and the sealing cavity to form two closed spaces which are not communicated with each other, and based on the principle that high air pressure flows to low air pressure, leaked gas presses the sealing gasket, so that the sealing gasket is tightly attached to the sealing cavity; the purpose of leakage prevention is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas recovery valves, in particular to an oil and gas recovery valve with an anti-leakage function. Background Art

[0002] Oil and gas recovery is a new energy-saving and environmentally friendly technology. It uses oil and gas recovery technology to recover the oil and gas emitted during the storage, transportation, loading and unloading of oil products, prevent air pollution caused by oil and gas volatilization, eliminate safety hazards, and improve energy utilization and reduce economic losses, thereby obtaining considerable benefits. Common methods include adsorption, absorption, condensation and membrane separation systems.

[0003] The function of the oil and gas recovery system of the oil tanker is to realize fully enclosed gas recovery and limit the emission of oil and gas into the atmosphere during the loading and unloading process of the oil tanker. That is, the oil pipeline and oil and gas recovery pipe between the oil tanker and the oil storage tank are connected to form a closed oil and gas recovery pipeline. While the oil tanker unloads oil through the oil unloading pipeline, the oil and gas in the oil tank of the gas station returns to the oil tanker through the return air pipeline. The oil tanker brings the oil and gas back to the oil depot for processing to achieve the purpose of oil and gas recovery. When the oil product is input, the volatility and escape of oil and gas will increase due to the fluctuation of the liquid level. Therefore, the oil filling pipe must be deep below the oil surface to reduce the disturbance of the liquid surface. The opening of the oil and gas recovery pipe is equipped with a special opening function device. When the oil and gas recovery pipeline of the oil tanker is correctly connected to the oil tank, the recovery port will be opened, and the exhaust pipe will be closed at the same time, so that the oil and gas in the oil tank can be completely returned to the oil tanker through the recovery port.

[0004] Patent document CN201678439U discloses an oil and gas recovery valve, including a valve body, a filter, a push rod and a valve disc, the filter is installed on the air inlet on the left part of the valve body, the upper part of the push rod passes through the through hole in the middle part of the valve disc, and the upper end of the push rod is fixed on the valve disc, the valve disc is installed on the valve at the upper end of the right part of the valve body, and also includes a spring, a piston and a cylinder cover, the push rod passes downward through the valve body and the lower end of the push rod is fixedly matched with the middle part of the piston, the spring is sleeved on the lower part of the push rod and the upper end of the spring is against the inner wall of the valve body, the lower end of the spring is against the upper end surface of the piston, and the cylinder cover is installed at the lower part of the piston; there are three gas channels on one side of the valve body, and these three gas channels are, from bottom to top, an air inlet, an auxiliary air outlet and an exhaust port; when the oil and gas recovery valve is in a closed state, the air inlet is communicated with the cavity of the valve body at the lower part of the piston, and the auxiliary air outlet and the exhaust port are communicated with the cavity of the valve body at the upper part of the piston. The utility model adopts pneumatic control for filling, can recover the oil and gas generated during filling, and can adjust the pressure in the tank.

[0005] The above-mentioned device does not have a structure with an anti-leakage mechanism when in use, so that during oil and gas recovery operations, oil and gas leakage may occur due to poor sealing, causing safety hazards such as environmental pollution, fire hazards, damage to people's lives and property; and the above-mentioned device does not have a more secure fixing device, which may easily lead to the loosening of the oil and gas recovery valve during long-term oil and gas recovery operations, posing a potential safety hazard.

[0006] Based on the existing technical deficiencies, the utility model designs an oil and gas recovery valve with an anti-leakage function. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies of the prior art, the utility model discloses an oil and gas recovery valve with an anti-leakage function to solve the problems raised in the above background technology.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: an oil and gas recovery valve with anti-leakage function comprises a base, a fixing mechanism is arranged on the upper surface of the base, an outer wall is fixedly connected to the upper surface of the base, an oil outlet pipe is arranged on one side of the outer wall, an exhaust pipe is arranged on one side of the outer wall, an auxiliary air intake pipe is arranged on one side of the outer wall, a main air intake pipe is arranged on one side of the outer wall, a top cover is arranged on the upper surface of the outer wall, an anti-leakage mechanism is arranged inside the outer wall, a valve body is arranged inside the outer wall, an air inlet is opened on one side of the outer wall, and a limit ring is arranged on one side of the outer wall;

[0011] The anti-leakage mechanism comprises a limiting ring, a cavity side wall and a sealing gasket. The upper surface of the limiting ring is provided with the cavity side wall, and the upper surface of the limiting ring is movably connected with the sealing gasket.

[0012] Preferably, the anti-leakage mechanism further includes an annular groove and a sealing cavity, the sealing cavity is opened on the upper surface of the limiting ring, and the top of the sealing cavity is provided with an annular groove.

[0013] Preferably, a valve body is provided on the upper surface of the base, and an exhaust pipe is provided at the bottom of the auxiliary air intake pipe.

[0014] Preferably, a main air intake pipe is arranged on the top of the auxiliary air intake pipe, and an anti-leakage mechanism is arranged on the bottom of the top cover.

[0015] Preferably, the fixing mechanism includes a main bolt, an auxiliary bolt, an external thread groove, a clamping plate and an internal thread groove, the main bolt is arranged on the upper surface of the base, the auxiliary bolt is movably sleeved inside the main bolt, an internal thread groove is provided inside the main bolt, a clamping plate is provided at the bottom of the main bolt, and an external thread groove is provided on one side of the auxiliary bolt.

[0016] Preferably, the limiting ring is arranged inside the outer wall, and a sealing gasket is movably sleeved inside the side wall of the cavity.

[0017] Preferably, one side of the internal thread groove is matched with an external thread groove, and an auxiliary bolt is provided at the bottom of the clamping plate.

[0018] The utility model discloses an oil and gas recovery valve with an anti-leakage function, which has the following beneficial effects:

[0019] 1. The oil and gas recovery valve with anti-leakage function is provided with a sealing chamber. When the oil and gas recovery valve with anti-leakage function is used, when the valve body leaks, a sealing gasket is provided at the outlet of the sealing chamber to make the internal air pressure of the sealing chamber lower than that of the valve body. Based on the principle that high pressure flows to low pressure, the sealing gasket is stuck at the outlet of the sealing chamber under the push of high-pressure gas, and at the same time, it tightly fits the limit ring and the side wall of the chamber to achieve the purpose of anti-leakage.

[0020] 2. The oil and gas recovery valve with anti-leakage function is provided with a main bolt. When the oil and gas recovery valve needs to be installed, the main bolt is first installed into the flange groove. An internal thread groove is opened inside the main bolt. Then the auxiliary bolt is rotated and installed into the main bolt. An external thread groove suitable for the main bolt is opened on one side of the auxiliary bolt. Compared with traditional bolts, the fixing effect of this bolt is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the oil and gas recovery valve of the utility model;

[0022] Figure 2 This is a schematic diagram of the exploded structure of the oil and gas recovery valve of the utility model;

[0023] Figure 3 This is a schematic diagram of the anti-leakage mechanism structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0025] Figure 5 It is a schematic diagram of an enlarged view of the fixing mechanism of the utility model.

[0026] In the figure: 1. base; 2. fixing mechanism; 201. main bolt; 202. auxiliary bolt; 203. external thread groove; 204. clamping plate; 205. internal thread groove; 3. outer wall; 4. top cover; 5. oil outlet pipe; 6. exhaust pipe; 7. auxiliary air inlet pipe; 8. main air inlet pipe; 9. anti-leakage mechanism; 901. limiting ring; 902. cavity side wall; 903. sealing gasket; 904. annular groove; 905. sealing cavity; 10. valve body; 11. air inlet; 12. limiting ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] See also Figure 1-5 The utility model provides the following technical solutions: an oil and gas recovery valve with anti-leakage function comprises a base 1, a fixing mechanism 2 is arranged on the upper surface of the base 1, an outer wall 3 is fixedly connected to the upper surface of the base 1, an oil outlet pipe 5 is arranged on one side of the outer wall 3, an exhaust pipe 6 is arranged on one side of the outer wall 3, an auxiliary air intake pipe 7 is arranged on one side of the outer wall 3, a main air intake pipe 8 is arranged on one side of the outer wall 3, a top cover 4 is arranged on the upper surface of the outer wall 3, an anti-leakage mechanism 9 is arranged inside the outer wall 3, a valve body 10 is arranged inside the outer wall 3, an air inlet 11 is opened on one side of the outer wall 3, and a limiting ring 12 is arranged on one side of the outer wall 3;

[0030] A valve body 10 is disposed on the upper surface of the base 1 , and an exhaust pipe 6 is disposed at the bottom of the auxiliary air intake pipe 7 .

[0031] A main air intake pipe 8 is disposed on the top of the auxiliary air intake pipe 7 , and an anti-leakage mechanism 9 is disposed on the bottom of the top cover 4 .

[0032] Example 2

[0033] See also Figure 3 The utility model provides the following technical solutions: an anti-leakage mechanism 9, which includes a limiting ring 901, a cavity side wall 902 and a sealing gasket 903. The upper surface of the limiting ring 901 is provided with the cavity side wall 902, and the upper surface of the limiting ring 901 is movably connected with the sealing gasket 903.

[0034] The anti-leakage mechanism 9 further includes an annular groove 904 and a sealing cavity 905 . The sealing cavity 905 is opened on the upper surface of the limiting ring 901 , and an annular groove 904 is arranged on the top of the sealing cavity 905 .

[0035] The limiting ring 901 is arranged inside the outer wall 3 , and a sealing gasket 903 is movably sleeved inside the cavity side wall 902 .

[0036] It needs to be further explained that: when an oil and gas recovery valve with anti-leakage function is used, when the valve body 10 leaks, the sealing gasket 903 is provided to isolate the sealing cavity 905 and the valve body 10 to form two mutually unconnected closed spaces, and at the same time, the oil and gas leaked from the valve body 10 flows to the sealing cavity 905 based on the principle that high-pressure airflow flows to low-pressure gas, and drives the sealing gasket 903 to isolate the oil and gas from flowing to the sealing cavity 905, thereby achieving the purpose of anti-leakage.

[0037] Example 3

[0038] See also Figure 4-5 The utility model provides the following technical solution: the fixing mechanism 2 includes a main bolt 201, an auxiliary bolt 202, an external thread groove 203, a clamping plate 204 and an internal thread groove 205, the main bolt 201 is arranged on the upper surface of the base 1, the auxiliary bolt 202 is movably sleeved inside the main bolt 201, the internal part of the main bolt 201 is provided with an internal thread groove 205, the bottom of the main bolt 201 is provided with a clamping plate 204, and one side of the auxiliary bolt 202 is provided with an external thread groove 203.

[0039] One side of the internal thread groove 205 is matched with an external thread groove 203 , and an auxiliary bolt 202 is disposed at the bottom of the clamping plate 204 .

[0040] What needs to be further explained is: when an oil and gas recovery valve with an anti-leakage function is used, a main bolt 201 is set on the base 1, and a clamping plate 204 is fixedly connected to the bottom of the main bolt 201. When the main bolt 201 is fixedly sleeved on the base 1, the clamping plate 204 is clamped on the other side of the base 1 to complete the fixation of the main bolt 201. Secondly, the auxiliary bolt 202 is rotatably installed inside the main bolt 201 to prevent the clamping plate 204 from detaching from the base, thereby completing the purpose of fixing the oil and gas recovery valve.

[0041] Working principle: When an oil and gas recovery valve with an anti-leakage function is used, when the valve body 10 leaks, the sealing gasket 903 is set to isolate the sealing cavity 905 and the valve body 10 to form two unconnected closed spaces. The edge of the sealing gasket 903 is made of flexible material. Under the action of the high pressure of the leaking gas from the valve body 10, it tightly fits the sealing cavity 905 to prevent oil and gas from flowing into the sealing cavity 905, thereby achieving the purpose of preventing oil and gas leakage.

[0042] When an oil and gas recovery valve with an anti-leakage function is used, a main bolt 201 is arranged on the base 1, and a clamping plate 204 is fixedly connected to the bottom of the main bolt 201. When the main bolt 201 is fixedly sleeved on the base 1, the clamping plate 204 is movably connected to the other side of the base 1 to complete the fixation of the main bolt 201; secondly, the auxiliary bolt 202 is rotatably installed inside the main bolt 201 to prevent the clamping plate 204 from detaching from the base 1. The main bolt 201 and the auxiliary bolt 202 are used in combination to have better anti-falling performance and can adapt to fixing work under high-pressure environments.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An oil and gas recovery valve with anti-leakage function, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a fixing mechanism (2), the upper surface of the base (1) is fixedly connected with an outer wall (3), one side of the outer wall (3) is provided with an oil outlet pipe (5), one side of the outer wall (3) is provided with an exhaust pipe (6), one side of the outer wall (3) is provided with an auxiliary air intake pipe (7), one side of the outer wall (3) is provided with a main air intake pipe (8), the upper surface of the outer wall (3) is provided with a top cover (4), the interior of the outer wall (3) is provided with an anti-leakage mechanism (9), the interior of the outer wall (3) is provided with a valve body (10), one side of the outer wall (3) is provided with an air intake port (11), and one side of the outer wall (3) is provided with a limit ring (12); The anti-leakage mechanism (9) comprises a limiting ring (901), a cavity side wall (902) and a sealing gasket (903); the upper surface of the limiting ring (901) is provided with the cavity side wall (902); and the upper surface of the limiting ring (901) is movably connected with the sealing gasket (903).

2. The oil and gas recovery valve with anti-leakage function according to claim 1, characterized in that: The anti-leakage mechanism (9) further comprises an annular groove (904) and a sealing cavity (905); the sealing cavity (905) is provided on the upper surface of the limiting ring (901); and the top of the sealing cavity (905) is provided with an annular groove (904).

3. The oil and gas recovery valve with anti-leakage function according to claim 1, characterized in that: A valve body (10) is provided on the upper surface of the base (1), and an exhaust pipe (6) is provided at the bottom of the auxiliary air intake pipe (7).

4. The oil and gas recovery valve with anti-leakage function according to claim 1, characterized in that: A main air intake pipe (8) is arranged on the top of the auxiliary air intake pipe (7), and an anti-leakage mechanism (9) is arranged on the bottom of the top cover (4).

5. The oil and gas recovery valve with anti-leakage function according to claim 1, characterized in that: The fixing mechanism (2) comprises a main bolt (201), an auxiliary bolt (202), an external thread groove (203), a clamping plate (204) and an internal thread groove (205); the main bolt (201) is arranged on the upper surface of the base (1); the auxiliary bolt (202) is movably sleeved inside the main bolt (201); the main bolt (201) is provided with an internal thread groove (205); a clamping plate (204) is provided at the bottom of the main bolt (201); and an external thread groove (203) is provided on one side of the auxiliary bolt (202).

6. The oil and gas recovery valve with anti-leakage function according to claim 1, characterized in that: The limiting ring (901) is arranged inside the outer wall (3), and a sealing gasket (903) is movably sleeved inside the cavity side wall (902).

7. The oil and gas recovery valve with anti-leakage function according to claim 5, characterized in that: One side of the internal thread groove (205) is matched with an external thread groove (203), and the bottom of the clamping plate (204) is provided with an auxiliary bolt (202).

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