Tank area oil pump exhaust and oil and gas collection device and working method thereof

Abstract

The invention discloses a tank area oil pump exhaust and oil and gas collection device and a working method thereof, comprising a plurality of oil pump exhaust units, the oil pump exhaust unit comprising an oil pump, a pump inlet pipeline, a pump outlet pipeline, a compressed air main pipe, an inlet venting pipeline and an outlet venting pipeline, the inlet venting pipeline and the outlet venting pipeline of each oil pump exhaust unit are connected through a venting main pipe, all venting main pipes are connected to a recovery oil tank through an oil and gas recovery pipeline, the top of the recovery oil tank is provided with an exhaust pipe, the bottom of the recovery oil tank is provided with at least one oil discharge port, and each venting main pipe is provided with a jet pump and an oil sight glass. The pressure in the pump inlet pipeline of the invention can be quickly emptied, the pump foundation can be prevented from being polluted, the pump can be easily cleaned, the gas in the pipeline can be exhausted, the oil pump can be prevented from causing flow loss and mechanical seal damage due to air entering the pipeline inlet, the oil product can be recovered, the oil product can be avoided from being wasted, and the excess compressed air in the recovery oil tank can be discharged outdoors.

Description

Technical Field

[0001] The invention relates to an oil pump maintenance device, in particular to an oil pump exhaust and oil and gas collection device in a tank area and a working method thereof. Background Art

[0002] At present, when the oil pump (oil pump) inlet and outlet are exhausted, it is necessary to use a small bucket to collect the oil at the bottom. The oil brought out with the gas can easily pollute the pump foundation, and the oil pump exhausts the gas to form oil mist. The oil mist not only pollutes the air in the room and wastes oil, but also adheres to the top of the pipeline, which is not conducive to cleaning. At the same time, the pump inlet pipeline has too many elbows and the gas in the pipeline cannot be completely exhausted, resulting in air entering the pump inlet pipeline, losing the pump operation efficiency, and even damaging the pump mechanical seal. Summary of the invention

[0003] In order to solve the defects and shortcomings of the above-mentioned prior art, the present invention provides a method of connecting a vent main pipe to the inlet and outlet vent pipelines of all oil pumps, and installing a jet pump on the vent main pipe to increase the suction force during exhaust, so that the pressure in the pump inlet pipeline can be quickly emptied, which can not only prevent the pollution of the pump foundation and facilitate the cleaning of the pump, but also exhaust the gas in the pipeline. At the same time, a recovery oil tank is used to recover the oil products when all the vent main pipes are exhausted, so as to avoid the waste of oil products, and the excess oil can be discharged in the recovery oil tank. Compressed air The oil-gas mixture is filtered through the oil-absorbing cotton in the recovery tank, and the clean air is discharged outside the house through the tank area oil pump exhaust and oil-gas collection device and its working method.

[0004] The technical solution of the present invention is as follows: a tank area oil pump exhaust and oil and gas collection device, comprising a plurality of oil pump exhaust units, the oil pump exhaust units comprising an oil pump, a pump inlet pipeline, a pump outlet pipeline, a compressed air main pipe, an inlet venting pipeline connected to the pump inlet pipeline and an outlet venting pipeline connected to the pump outlet pipeline, characterized in that the inlet venting pipeline and the outlet venting pipeline of each oil pump exhaust unit are connected through a venting main pipe, all venting main pipes are connected to a recovery oil tank through an oil and gas recovery pipeline, an exhaust pipe and a plurality of layers of oil absorbing cotton matching the exhaust pipe are provided on the top of the recovery oil tank, at least one oil discharge port is provided on the bottom of the recovery oil tank, a jet pump and an oil sight glass are provided on each venting main pipe, the oil sight glass is located below the jet pump, a first ball valve is provided on each inlet venting pipeline, a second ball valve is provided on each outlet venting pipeline, and a third ball valve is provided between each compressed air main pipe and the jet pump.

[0005] The present invention connects a vent main pipe to the inlet and outlet vent pipelines of all oil pumps, and installs a jet pump on the vent main pipe to increase the suction force during exhaust, so that the pressure in the pump inlet pipeline can be quickly emptied, which can not only prevent the pollution of the pump foundation and facilitate the cleaning of the pump, but also exhaust the gas in the pipeline. At the same time, a recovery oil tank is used to recover the oil when all the vent main pipes are exhausted, so as to avoid waste of oil. In the recovery oil tank, the excess compressed air can be filtered through the oil-absorbing cotton in the recovery tank, and the clean air is discharged outside the house.

[0006] Preferably, a blue filter and a first pneumatic ball valve are provided on the pump inlet pipeline, and the inlet vent pipeline is connected between the first pneumatic ball valve and the oil pump.

[0007] This structure ensures that the oil inlet to the pump inlet pipeline is smooth and reliable.

[0008] Preferably, the compressed air main pipe is connected to a first compressed air branch pipe and a second compressed air branch pipe, the third ball valve is located on the first compressed air branch pipe, the second compressed air branch pipe is connected between a blue filter and the first pneumatic ball valve, and the second compressed air branch pipe is provided with a fourth ball valve and a first check valve.

[0009] This structure ensures that the compressed air in the compressed air main pipe can flow smoothly into the pump inlet pipeline.

[0010] Preferably, a second pneumatic ball valve and a second check valve are provided on the pump outlet pipeline, and the outlet venting pipeline is connected between the second check valve and the oil pump.

[0011] This structure ensures that the oil inlet to the pump outlet pipeline is smooth and reliable.

[0012] Preferably, the jet pump is a threaded jet pump, the oil sight glass is a threaded oil sight glass, and the first ball valve, the second ball valve and the third ball valve are all welded wafer-type ball valves.

[0013] Preferably, the fourth ball valve is a welded wafer-type ball valve, and the first check valve and the second check valve are both wafer-type check valves.

[0014] Preferably, four supporting columns are provided at the bottom of the recovery oil tank, the oil drain port comprises a first oil drain port located in the middle of the bottom of the recovery oil tank and a second oil drain port located on one side of the bottom of the recovery oil tank, and the exhaust pipe is connected to the middle of the top of the recovery oil tank.

[0015] This structure ensures that the recovery oil tank is placed firmly and reliably, and at the same time facilitates the setting of multiple oil discharge ports to facilitate oil discharge.

[0016] Preferably, a first oil drain valve is provided at the first oil drain port, and a second oil drain valve is provided at the second oil drain port, and both the first oil drain valve and the second oil drain valve are welded wafer-type ball valves.

[0017] This structure ensures that the oil discharge from the first oil discharge port and the second oil discharge port is stable and reliable.

[0018] Preferably, the number of the oil pump exhaust units is 2-16, the number of the oil absorbent cotton is 3-4 layers, and the thickness of each layer of the oil absorbent cotton is 2 cm.

[0019] This number of options allows it to be used in tank farms of different sizes, expanding its scope of application; at the same time, it can ensure that the gas discharged from the recovery tank is clean.

[0020] A working method of a tank area oil pump exhaust and oil and gas collection device, the steps are as follows: before all the oil pumps in the tank area are started, the first ball valve is opened, and when it is observed that there is no oil in the oil sight glass, the third ball valve next to the jet pump is opened, and the jet pump discharges the gas at the oil pump inlet from the inlet venting pipeline to prevent the gas from entering the oil pump; when oil is seen in the oil sight glass, the first ball valve is closed, the pump is started and the second ball valve is opened, the oil in the oil sight glass and the venting main pipe is poured back to the outlet of the oil pump from the outlet venting pipeline, and is pumped out with the oil at the pump outlet pipeline; the gas discharged by the jet pump and a small amount of oil are centrally recovered into the recovery oil tank through the oil and gas recovery pipeline, and the exhaust pipe on the top of the recovery oil tank filters the internal gas through oil absorbent cotton and then discharges it into the atmosphere outside the pump room.

[0021] The present invention connects a vent main pipe to the inlet and outlet vent pipelines of all oil pumps, and installs a jet pump on the vent main pipe to increase the suction force during exhaust, so that the pressure in the pump inlet pipeline can be quickly emptied, which can not only prevent the pump foundation from being polluted and facilitate the cleaning of the pump, but also exhaust the gas in the pipeline to prevent the oil pump from causing flow loss and mechanical seal damage due to the entry of air into the pipeline inlet. At the same time, a recovery oil tank is used to recover the oil products when all the vent main pipes are exhausted, so as to avoid waste of oil products, and the excess compressed air (filtered by the oil-absorbing cotton in the recovery oil tank) can be discharged outside the house as clean compressed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a component connection diagram of the present invention;

[0023] Figure 2 It is a component connection diagram of a single oil pump exhaust unit in the present invention;

[0024] In the figure, 1. oil pump, 2. pump inlet pipeline, 3. pump outlet pipeline, 4. inlet vent pipeline, 5. outlet vent pipeline, 6. vent main pipe, 7. compressed air main pipe, 8. jet pump, 9. oil sight glass, 10. blue filter, 11. first ball valve, 12. second ball valve, 13. third ball valve, 14. fourth ball valve, 15. first pneumatic ball valve, 16. second pneumatic ball valve, 17. first check valve, 18. second check valve, 19. first compressed air branch pipe, 20. second compressed air branch pipe, 21. oil recovery tank, 22. oil and gas recovery pipeline, 23. exhaust pipe, 24. first oil discharge port, 25. second oil discharge port, 26. first oil discharge valve, 27. second oil discharge valve, 28. support column, 29. oil pump exhaust unit, 30. oil absorbent cotton. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings, but this does not limit the protection scope of the present invention.

[0026] like Figure 1 and 2As shown, a tank area oil pump exhaust and oil and gas collection device includes 8 oil pump exhaust units 29, each oil pump exhaust unit includes an oil pump 1, a pump inlet pipeline 2, a pump outlet pipeline 3, a compressed air main pipe 7, an inlet venting pipeline 4 connected to the pump inlet pipeline 2, and an outlet venting pipeline 5 connected to the pump outlet pipeline 3. The inlet venting pipeline 4 and the outlet venting pipeline 5 of each oil pump exhaust unit are connected through a venting main pipe 6, and all venting main pipes are connected to a recovery oil tank 21 through an oil and gas recovery pipeline 22. The top of the recovery oil tank 21 is provided with an exhaust pipe 23 and 3 layers of oil absorbing cotton 30 matching the exhaust pipe 23, and the thickness of each layer of oil absorbing cotton 30 is 2 cm. The bottom of the recovery oil tank 21 is provided with 2 oil discharge ports. Each vent main pipe 6 is provided with a jet pump 8 and an oil sight glass 9, the oil sight glass 9 is located below the jet pump 8, each inlet vent line 4 is provided with a first ball valve 11, each outlet vent line 5 is provided with a second ball valve 12, and a third ball valve 13 is provided between the compressed air main pipe 7 and the jet pump 8. A basket filter 10 and a first pneumatic ball valve 15 are provided on the pump inlet pipeline 2, and the inlet vent line 4 is connected between the first pneumatic ball valve 15 and the oil pump 1. The compressed air main pipe 7 is connected with a first compressed air branch pipe 19 and a second compressed air branch pipe 20, the third ball valve 13 is located on the first compressed air branch pipe 19, the second compressed air branch pipe 20 is connected between the basket filter 10 and the first pneumatic ball valve 15, and the second compressed air branch pipe 20 is provided with a fourth ball valve 14 and a first check valve 17. The pump outlet pipeline 3 is provided with a second pneumatic ball valve 16 and a second check valve 18, and the outlet venting pipeline 5 is connected between the second check valve 18 and the oil pump 1. The jet pump 8 is a threaded jet pump, the oil sight glass 9 is a threaded oil sight glass, the first ball valve 11, the second ball valve 12 and the third ball valve 13 are all welded wafer-type ball valves. The fourth ball valve 14 is a welded wafer-type ball valve, and the first check valve 17 and the second check valve 18 are both wafer-type check valves. Four support columns 28 are provided at the bottom of the recovery oil tank 21, and the oil discharge port includes a first oil discharge port 24 located in the middle of the bottom of the recovery oil tank 21 and a second oil discharge port 25 located on one side of the bottom of the recovery oil tank 21. The exhaust pipe 23 is connected to the middle of the top of the recovery oil tank 21. The first oil discharge port 24 is provided with a first oil discharge valve 26, and the second oil discharge port 25 is provided with a second oil discharge valve 27. The first oil discharge valve 26 and the second oil discharge valve 27 are both welded wafer-type ball valves.

[0027] A working method of a tank area oil pump exhaust and oil and gas collection device, the steps are as follows: before all the oil pumps in the tank area are started, the first ball valve is opened, and when it is observed that there is no oil in the oil sight glass, the third ball valve next to the jet pump is opened, and the jet pump discharges the gas at the oil pump inlet from the inlet venting pipeline to prevent the gas from entering the oil pump; when oil is seen in the oil sight glass, the first ball valve is closed, the pump is started and the second ball valve is opened, the oil in the oil sight glass and the venting main pipe is poured back to the outlet of the oil pump from the outlet venting pipeline, and is pumped out with the oil at the pump outlet pipeline; the gas discharged by the jet pump and a small amount of oil are centrally recovered into the recovery oil tank through the oil and gas recovery pipeline, and the exhaust pipe on the top of the recovery oil tank filters the internal gas through oil absorbent cotton and then discharges it into the atmosphere outside the pump room.

[0028] In the present invention, the excess compressed air in the recovered oil tank (the gas recovered from the oil and gas recovery pipeline along with the recovered oil products) is filtered in the recovery oil tank (filtered by oil-absorbing cotton) to form clean gas, which is directly discharged outside the pump room. The exhaust power can be a conventional fan, so it is not described in detail.

[0029] The present invention connects a vent main pipe to the inlet and outlet vent pipelines of all oil pumps, and installs a jet pump on the vent main pipe to increase the suction force during exhaust, so that the pressure in the pump inlet pipeline can be quickly emptied, which can not only prevent the pump foundation from being polluted and facilitate the cleaning of the pump, but also exhaust the gas in the pipeline. At the same time, a recovery oil tank is used to recover the oil products when all the vent main pipes are exhausted, so as to avoid the waste of oil products, and the excess compressed air (filtered by the oil-absorbing cotton in the recovery oil tank) can be discharged outside the house.

Claims

1. A working method for exhausting oil pumps and collecting oil and gas in a tank area, using an exhaust and oil and gas collection device for oil pumps in a tank area, including a plurality of oil pump exhaust units, wherein the oil pump exhaust units include an oil pump, a pump inlet pipeline, a pump outlet pipeline, a compressed air main, an inlet venting pipeline connected to the pump inlet pipeline, and an outlet venting pipeline connected to the pump outlet pipeline, characterized in that: The inlet venting pipeline and the outlet venting pipeline of each oil pump exhaust unit are connected through a venting main pipe, and all venting main pipes are connected to a recovery oil tank through an oil and gas recovery pipeline. The top of the recovery oil tank is provided with an exhaust pipe and several layers of oil-absorbing cotton matching the exhaust pipe, and the bottom of the recovery oil tank is provided with at least one oil discharge port. Each venting main pipe is provided with a jet pump and an oil sight glass, and the oil sight glass is located below the jet pump. A first ball valve is provided on each inlet venting pipeline, a second ball valve is provided on each outlet venting pipeline, and a third ball valve is provided between each compressed air main pipe and the jet pump; The steps of the working method of exhausting the oil pump and collecting oil and gas in the tank area are as follows: before starting all the oil pumps in the tank area, open the first ball valve. When observing that there is no oil in the oil sight glass, open the third ball valve next to the jet pump, and the jet pump will discharge the gas at the inlet of the oil pump from the inlet vent pipeline to prevent the gas from entering the oil pump; when oil is seen in the oil sight glass, close the first ball valve, start the pump and open the second ball valve, and the oil in the oil sight glass and the vent main pipe will flow back from the outlet vent pipeline to the outlet of the oil pump and be pumped out with the oil at the pump outlet pipeline; the gas discharged by the jet pump and a small amount of oil are collected and collected in the recovery oil tank through the oil and gas recovery pipeline, and the exhaust pipe on the top of the recovery oil tank will filter the internal gas through oil absorbent cotton and discharge it into the atmosphere outside the pump room.

2. A method for exhausting oil pumps and collecting oil and gas in a tank area according to claim 1, characterized in that: A basket filter and a first pneumatic ball valve are arranged on the pump inlet pipeline, and the inlet venting pipeline is connected between the first pneumatic ball valve and the oil pump.

3. A method for exhausting oil pumps and collecting oil and gas in a tank area according to claim 2, characterized in that: The compressed air main pipe is connected to a first compressed air branch pipe and a second compressed air branch pipe, the third ball valve is located on the first compressed air branch pipe, the second compressed air branch pipe is connected between the basket filter and the first pneumatic ball valve, and the second compressed air branch pipe is provided with a fourth ball valve and a first check valve.

4. A method for exhausting oil pumps and collecting oil and gas in a tank area according to claim 3, characterized in that: The pump outlet pipeline is provided with a second pneumatic ball valve and a second check valve, and the outlet vent pipeline is connected between the second check valve and the oil pump.

5. The working method of exhausting oil pumps and collecting oil and gas in a tank area according to claim 1 is characterized by: The jet pump is a threaded jet pump, the oil sight glass is a threaded oil sight glass, and the first ball valve, the second ball valve and the third ball valve are all welded wafer-type ball valves.

6. A method for exhausting oil pumps and collecting oil and gas in a tank area according to claim 4, characterized in that: The fourth ball valve is a welded wafer-type ball valve, and the first check valve and the second check valve are both wafer-type check valves.

7. A method for exhausting oil pumps and collecting oil and gas in a tank area according to claim 1, characterized in that: The bottom of the recovery oil tank is provided with four supporting columns, the oil drain port comprises a first oil drain port located in the middle of the bottom of the recovery oil tank and a second oil drain port located on one side of the bottom of the recovery oil tank, and the exhaust pipe is connected to the middle of the top of the recovery oil tank.

8. A method for exhausting oil pumps and collecting oil and gas in a tank area according to claim 7, characterized in that: A first oil drain valve is disposed at the first oil drain port, and a second oil drain valve is disposed at the second oil drain port. Both the first oil drain valve and the second oil drain valve are welded wafer-type ball valves.

9. A method for exhausting oil pumps and collecting oil and gas in a tank area according to claim 1, characterized in that: The number of the oil pump exhaust units is 2-16, the number of the oil absorbent cotton is 3-4 layers, and the thickness of each layer of the oil absorbent cotton is 2 cm.

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