Jet device additionally arranged on smoke exhaust pipeline of oil station

Abstract

The utility model discloses a device for additionally installing a jet device on a smoke exhaust pipeline of an oil station, which relates to the technical field of smoke exhaust of the oil station and comprises an oil tank and a smoke exhaust pipe, an oil tank smoke exhaust fan is arranged on the smoke exhaust pipe, and a nitrogen jet device control device is further arranged in the smoke exhaust pipe. The nitrogen jet device control device comprises a stainless steel pipe, a reducer pipe joint, an elbow and a welding type regulating valve. The nitrogen jet device can form negative pressure in a pipeline by jetting nitrogen at a high speed, so that oil smoke and harmful gas in the pipeline can be sucked and exhausted more effectively, the smoke exhaust effect is improved, flow field distribution in the pipeline can be improved through the jetting effect of the nitrogen jet device, vortexes and dead angles are reduced, and the smoke exhaust effect is improved. Oil smoke and harmful gas are discharged more smoothly, the possibility of pipeline blockage is reduced, nitrogen ejected by the nitrogen ejector can exchange heat with high-temperature discharged smoke, and therefore the temperature of the discharged smoke is reduced, the heat load on pipeline materials is reduced, and the service life of the pipeline is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust in oil stations, in particular to an ejector device installed on a smoke exhaust pipeline in an oil station. Background Art

[0002] With the increasing awareness of environmental protection, gas station exhaust management has become an important part of environmental protection work. The existing gas station exhaust system mainly uses natural emission or simple filtering devices to exhaust smoke. This treatment method has the problem of low exhaust efficiency and ineffective removal of harmful gases. Therefore, it is necessary to improve the gas station exhaust system to improve the exhaust efficiency and harmful gas removal effect.

[0003] The following documents are searched and found: (1) "Process Pipe Installation Design Manual" China Petrochemical Press 2005, it can be seen that there is no process technology for installing ejectors on the oil tank exhaust pipeline in the production process of enterprises. Many domestic production enterprises use exhaust fans to force exhaust smoke, which limits the production cost and environmental protection requirements of enterprises. Therefore, the utility model proposes an ejector device installed on the exhaust pipeline of a gas station. Summary of the invention

[0004] Technical issues solved

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide an ejector device installed on the smoke exhaust pipeline of a gas station.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ejector device is installed on the exhaust pipeline of a gas station, comprising a fuel tank and an exhaust pipe, the exhaust pipe is provided with a fuel tank exhaust fan, and a nitrogen ejector control device is also provided inside the exhaust pipe;

[0008] The nitrogen ejector control device comprises a stainless steel pipe, a reducer pipe joint, an elbow and a welded regulating valve, wherein the stainless steel pipe is connected to the reducer pipe joint through the elbow, and the welded regulating valve is arranged on the stainless steel pipe.

[0009] Preferably, a nitrogen ejector is installed at the end of the smoke exhaust pipe, and the nitrogen ejector is located at the center of the smoke exhaust pipe.

[0010] Preferably, the nitrogen ejector control device is located at the rear end of the smoke exhaust pipe.

[0011] Preferably, the stainless steel pipe is a steel pipe with an outer diameter of 15 mm, and the reducer pipe joint is a joint with an outer diameter of 15 mm to 5 mm.

[0012] Preferably, the elbow and the reducer joint are located inside the smoke exhaust pipe.

[0013] Preferably, the stainless steel pipe and the welded regulating valve are located outside the smoke exhaust pipe. Beneficial Effects

[0014] Compared with the prior art, the installation of an ejector device on the gas station exhaust pipeline has the following beneficial effects:

[0015] 1. The nitrogen ejector of the utility model can form a negative pressure in the pipeline by injecting nitrogen at a high speed, which helps to more effectively suck and remove oil smoke and harmful gases in the pipeline, thereby improving the smoke exhaust effect.

[0016] 2. The injection effect of the nitrogen ejector of the utility model can improve the flow field distribution in the pipeline, reduce eddy currents and dead corners, make the oil smoke and harmful gases discharge more smoothly, and reduce the possibility of pipeline blockage.

[0017] 3. The nitrogen injected by the nitrogen ejector of the utility model can exchange heat with the high-temperature exhaust gas, thereby reducing the temperature of the exhaust gas, reducing the heat load on the pipeline material, and extending the service life of the pipeline.

[0018] Fourth, the injection action of the nitrogen ejector of the utility model will generate a certain negative pressure in the pipeline, which helps to prevent the external air from flowing back into the smoke exhaust system and maintain the airtightness of the system.

[0019] 5. The utility model can achieve a more efficient smoke exhaust effect by optimizing the injection speed and injection amount of the nitrogen ejector, thereby reducing the energy consumption and operating cost of the smoke exhaust fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] In the figure:

[0022] 1. Oil tank; 2. Exhaust pipe; 3. Oil tank exhaust fan; 4. Stainless steel pipe; 5. Reducer pipe joint; 6. Elbow; 7. Welded regulating valve; 8. Nitrogen ejector. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1As shown, the utility model provides a technical solution: an ejector device is installed on the exhaust pipeline of a gas station, comprising an oil tank 1 and an exhaust pipe 2, on which an oil tank exhaust fan 3 is arranged, and a nitrogen ejector control device is also arranged inside the exhaust pipe 2, the nitrogen ejector control device comprises a stainless steel pipe 4, a reducer pipe joint 5, an elbow 6 and a welded regulating valve 7, wherein the stainless steel pipe 4 is connected to the reducer pipe joint 5 through the elbow 6, and the welded regulating valve 7 is arranged on the stainless steel pipe 4.

[0025] A nitrogen ejector 8 is installed at the end of the smoke exhaust pipe 2 in the present application, and the nitrogen ejector 8 is located at the center of the smoke exhaust pipe 2, and the nitrogen ejector control device is located at the rear end of the smoke exhaust pipe 2. The nitrogen ejector of the utility model can form a negative pressure in the pipeline by injecting nitrogen at high speed, which is helpful to more effectively suck and remove the oil smoke and harmful gases in the pipeline, thereby improving the smoke exhaust effect. The injection action of the nitrogen ejector can improve the flow field distribution in the pipeline, reduce eddy currents and dead corners, and make the oil smoke and harmful gases more smoothly discharged, reducing the possibility of pipeline blockage; the nitrogen injected by the nitrogen ejector can exchange heat with the high-temperature exhaust gas, thereby reducing the temperature of the exhaust gas, reducing the heat load on the pipeline material, and extending the service life of the pipeline; the injection action of the nitrogen ejector will generate a certain negative pressure in the pipeline, which helps to prevent external air from backflowing into the smoke exhaust system and maintaining the airtightness of the system; by optimizing the injection speed and injection amount of the nitrogen ejector, a more efficient smoke exhaust effect can be achieved, thereby reducing the energy consumption and operating cost of the smoke exhaust fan.

[0026] The stainless steel pipe 4 in the present application is a steel pipe with an outer diameter of 15 mm, the reducer 5 is a joint with an outer diameter of 15 mm to 5 mm, the elbow 6 and the reducer 5 are located inside the smoke exhaust pipe 2, and the stainless steel pipe 4 and the welded regulating valve 7 are located outside the smoke exhaust pipe 2.

[0027] Working principle: After the lubricating oil exchanges heat with the running parts of the equipment, it returns to the oil tank. The return oil temperature rises and produces oil smoke. The oil smoke in the oil tank is sucked into the exhaust pipe by the exhaust fan and sent out, which reduces the pressure in the sealed oil tank and forms a negative pressure (which is conducive to the smooth return of the equipment lubricating oil system). A nitrogen ejector is installed at the end of the exhaust pipe (at the center of the exhaust pipe) to inject 0.5MPa pressure nitrogen (the pressure and flow are controlled by the regulating valve). Due to the high-speed jet of nitrogen, a local low-pressure area will be generated inside the pipeline. This low-pressure area will cause the relatively high-pressure gas outside the pipeline to try to enter the pipeline to balance the pressure difference. After the oil smoke is pressurized by the exhaust fan, the pressure is greater than the normal outdoor atmospheric pressure. Therefore, near the nitrogen ejector, a local pressure increase will be observed outside the pipeline, which helps to more effectively suck and remove the oil smoke and harmful gases in the pipeline, thereby improving the exhaust effect.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ejector device installed on a smoke exhaust pipeline of a gas station, comprising a fuel tank (1) and a smoke exhaust pipe (2), wherein the smoke exhaust pipe (2) is provided with a fuel tank smoke exhaust fan (3), characterized in that: A nitrogen ejector control device is also provided inside the smoke exhaust pipe (2); The nitrogen ejector control device comprises a stainless steel pipe (4), a reducer pipe joint (5), an elbow (6) and a welded regulating valve (7), wherein the stainless steel pipe (4) is connected to the reducer pipe joint (5) via the elbow (6), and the welded regulating valve (7) is arranged on the stainless steel pipe (4).

2. The fuel station exhaust pipe according to claim 1 is equipped with an ejector device, characterized in that: A nitrogen ejector (8) is installed at the end of the smoke exhaust pipe (2), and the nitrogen ejector (8) is located at the center of the smoke exhaust pipe (2).

3. The fuel station exhaust pipe according to claim 1 is equipped with an ejector device, characterized in that: The nitrogen ejector control device is located at the rear end of the smoke exhaust pipe (2).

4. The fuel station exhaust pipe according to claim 1 is equipped with an ejector device, characterized in that: The stainless steel pipe (4) is a steel pipe with an outer diameter of 15 mm, and the reducer pipe joint (5) is a joint with an outer diameter of 15 mm to 5 mm.

5. The fuel station exhaust pipe according to claim 1 is equipped with an ejector device, characterized in that: The elbow (6) and the reducer pipe joint (5) are located inside the smoke exhaust pipe (2).

6. The ejector device installed on the exhaust pipe of a gas station according to claim 1, characterized in that: The stainless steel pipe (4) and the welded regulating valve (7) are located outside the smoke exhaust pipe (2).

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