Oil sampling device for tank bottom sampling oil tank

Abstract

The utility model discloses a tank bottom sampling oil tank oil liquid sampling device which comprises a sampling mechanism, the sampling mechanism comprises a supporting platform arranged outside an oil tank body, and a pneumatic diaphragm pump is arranged on the supporting platform. The input end of the pneumatic diaphragm pump is communicated with one end of a telescopic flexible oil pipe in the oil tank through a pipe fitting penetrating through a tank body of the oil tank, and a movable sampling container is arranged at the output end of the pneumatic diaphragm pump; the oil tank further comprises a traction mechanism, the traction mechanism comprises a pair of guide rails arranged in the oil tank body, the guide rails are provided with traction blocks in sliding fit, the other end of the flexible oil pipe is connected with the traction blocks, and the traction blocks are further provided with oil taking openings communicated with the flexible oil pipe. The traction mechanism further comprises a winch arranged outside the tank body, a traction rope is arranged on the winch, and the traction rope penetrates into the tank body from the top of the oil tank to be connected with the traction block.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production equipment, in particular to an oil sampling device for a tank bottom sampling oil tank. Background Art

[0002] In the petrochemical industry, oil tanks are the main equipment for storing oil products. Sampling and analysis of the oil inside them is of great significance for understanding oil quality, oil handover, monitoring storage status, and ensuring production safety.

[0003] Traditional oil tank sampling methods often involve manually climbing up the tank with a handheld sampler to collect samples. Manual sampling involves the operator ascending to the tank roof, accessing a pre-defined sampling port, and using a brass sampling bottle with a piston at the top. The bottle is secured with a rope tied at regular intervals. After lowering the bottle to the desired location, the rope is pulled upward to release the piston, allowing the oil at that location to flow into the bottle. The bottle is then removed using the rope and transferred to another sampling bottle. This process is repeated multiple times to collect oil from different locations.

[0004] This traditional manual sampling method is time-consuming, labor-intensive, and difficult to control in terms of sampling accuracy. It is often subject to severe weather conditions such as rain, snow, and strong winds. In particular, flammable, explosive, toxic, and harmful media can seriously threaten the lives of sampling personnel.

[0005] Currently, most oil tank sampling devices on the market use a three-point sampling structure. While these structures enable simple multi-point sampling, they suffer from issues such as difficulty adjusting the sampling position, difficulty in maintenance, and poor adaptability. Furthermore, these devices often require complex transmission mechanisms or control systems at the bottom of the tank, which not only increases manufacturing costs but also compromises the overall structure and safety of the tank.

[0006] In response to the problems existing in current oil tank sampling and existing technologies, the utility model is committed to developing a new type of oil tank sampling device, aiming to reduce the safety risks brought by tank loading and manual sampling, reduce labor intensity, promote enterprises to reduce costs and increase efficiency, and promote the development of the tank sampling field in a more efficient and convenient direction. Utility Model Content

[0007] The purpose of the utility model is to solve the above technical problems and to provide an oil sampling device for a tank bottom, which provides a more convenient device for manual operation and solves the problem that traditional manual sampling is time-consuming and labor-intensive.

[0008] To achieve the above-mentioned object, the present invention adopts the following technical solution: a tank bottom sampling oil sampling device, comprising: a sampling mechanism, the sampling mechanism comprising a support platform arranged outside the tank body, a pneumatic diaphragm pump being provided on the support platform, the input end of the pneumatic diaphragm pump being connected to one end of a retractable flexible oil pipe in the tank via a pipe fitting penetrating the tank body, and a movable sampling container being provided at the output end of the pneumatic diaphragm pump;

[0009] The tank further includes a traction mechanism, the traction mechanism including a pair of guide rails disposed in the tank body, the pair of guide rails being provided with slidably fitted traction blocks, the other end of the flexible oil pipe being connected to the traction blocks, and the traction blocks being provided with an oil extraction port communicating with the flexible oil pipe;

[0010] The traction mechanism further comprises a winch arranged outside the tank body, the winch is provided with a traction rope, and the traction rope passes through the top of the oil tank into the tank body and is connected to the traction block.

[0011] A further preferred technical solution is that the flexible oil pipe is spirally coiled in the oil tank.

[0012] A further preferred technical solution is that the pneumatic diaphragm pump is connected to an external air source through an air source dual-piece, and a bracket is provided on the support platform for mounting the pneumatic diaphragm pump and the air source dual-piece.

[0013] A further preferred technical solution is that the output end of the pneumatic diaphragm pump is connected to the first port of the three-way valve through a pipe, the second port of the three-way valve is connected to the oil nozzle, the sampling container is provided below the oil nozzle, and the third port of the three-way valve is provided with an oil return pipe.

[0014] A further preferred technical solution is that a pair of bearing brackets are provided on the support platform, the winch is provided on the bearing bracket, one end of the winch has a rocker arm, the winch has a wire groove, and the traction rope is provided in the wire groove.

[0015] A further preferred technical solution is that a pair of guide brackets are provided on the top of the oil tank, one of which is arranged at the edge of the top of the oil tank, and a guide bracket is also provided at the bottom of the oil tank. The traction rope is guided by three guide brackets, and the guide bracket includes a bracket and a roller arranged on the bracket.

[0016] A further preferred technical solution is that the oil tank top is provided with a sealing flange to cooperate with the traction rope, and a cylindrical felt is integrated in the sealing flange leading out of the traction rope.

[0017] A further preferred technical solution is that a machine cover is further provided on the support platform, and the machine cover is formed by bending and welding sheet metal parts.

[0018] Compared with the existing technology, the beneficial effects of the utility model are: simple and reliable structure, easy operation, meeting the personnel's needs for fast and efficient sampling. At the same time, the device has anti-pollution capabilities, ensuring the cleanliness of the operation during the sampling process and the representativeness of the oil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the axonometric drawing of the utility model;

[0020] Figure 2 This is the axonometric drawing of the utility model without oil tank;

[0021] Figure 3 This is the axonometric drawing of the utility model without a hood;

[0022] Figure 4 For this utility model Figure 3 Middle partial enlarged view;

[0023] In the figure: 10. Oil tank; 20. Sampling mechanism; 21. Engine cover; 22. Sampling container; 23. Pneumatic diaphragm pump; 24. Support platform; 25. Flexible oil pipe; 30. Towing mechanism; 31. Winch; 32. Rocker arm; 33. Towing rope; 34. Guide bracket; 35. Sealing flange; 36. Guide rail; 37. Towing block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0025] During the production, storage and transportation of petrochemicals, in order to obtain the physical properties and other parameters of the media in these storage tanks, sampling personnel need to climb to the top of the tank to perform manual sampling so that laboratory personnel can conduct timely analysis and testing. The traditional manual sampling method is time-consuming and labor-intensive, the representativeness of the sampling is difficult to control, the sampling personnel have high labor intensity, and are often restricted by adverse weather conditions such as rain, snow, and strong winds. In particular, flammable, explosive, toxic and harmful media will seriously threaten the life safety of the sampling personnel. In order to solve the existing problems, the present application provides a tank bottom sampling oil tank oil sampling device, such as Figure 1-4As shown, it includes a sampling mechanism 20, which includes a supporting platform 24 arranged on the outside of the oil tank 10. In order to take out the oil liquid in the sampler from the sampler, an air-operated diaphragm pump 23 is provided on the supporting platform 24. The air-operated diaphragm pump 23 is connected to the retractable flexible oil pipe 25 in the oil tank 10 through a pipe fitting. Specifically, the oil tank 10 has a through hole running through the main body, and a flange is further provided at the through hole of the oil tank 10. One side of the flange located in the oil tank 10 is connected to one end of the flexible oil pipe 25. The flexible oil pipe 25 forms a sealing fit with the oil tank 10 through the flange, and the other end of the flexible oil pipe 25 moves up and down along the oil tank 10 in the oil tank 10.

[0026] The flange is located on one side outside the body of the oil tank 10 and is connected to the input end of the pneumatic diaphragm pump 23 through a pipe fitting. The output end of the pneumatic diaphragm pump 23 is connected to the first port of the three-way valve through a pipe fitting. The pneumatic diaphragm pump 23 is connected to an external air source through an air source two-piece. A bracket is provided on the support platform for installing the pneumatic diaphragm pump 23 and the air source two-piece.

[0027] The second port of the three-way valve is connected to the oil nozzle. A sampling container 22 is provided below the oil nozzle. The sampling container 22 is movably provided below the oil nozzle.

[0028] The third port of the three-way valve is provided with an oil return pipe. In one embodiment, the oil return pipe passes through the oil cylinder body to the oil tank.

[0029] The three-way valve is provided with a switch, which controls the communication between the first port and the second port or the third port.

[0030] In one embodiment, the pneumatic diaphragm pump 23 is arranged at the bottom of the outer side of the oil tank 10, and the flange is also arranged at the bottom of the oil tank 10. The input end of the pneumatic diaphragm pump 23 is connected to the bottom of the oil tank 10 through a pipe.

[0031] The flexible oil pipe 25 is spirally wound in the oil tank 10. The spiral flexible oil pipe 25 can ensure that the position of the sampling port can be changed, and always meet the requirements of sampling from different positions in the tank body of the oil tank 10. When the sampling position rises, the pitch of the spiral flexible oil pipe 25 becomes larger, and when the sampling position drops, the pitch of the spiral flexible oil pipe 25 becomes smaller. The flexible oil pipe 25 is arranged in the oil tank 10 in a spring shape. The flexible oil pipe 25 is made of nylon or tetrafluoroethylene material. The flexible oil pipe 25 has acid and alkali resistance and corrosion resistance. It also has wear resistance, good elasticity and flexibility, and can restore to a spring shape after stretching.

[0032] The support platform 24 is further provided with a hood 21, which is made of sheet metal parts bent and welded. The function of the hood 21 is to seal and protect the entire sampling device, and to have a certain heat preservation effect after absorbing the heat of the oil tank 10.

[0033] The oil suction pipeline is composed of a flexible oil pipe 25, a three-way valve, a pneumatic diaphragm pump 23, an oil nozzle and other components; the function of the oil suction pipeline is to extract the oil in the oil tank 10 into a sampling container.

[0034] The entire oil pipe loop is composed of a flexible oil pipe 25 inserted into the tank body, which comes out of the oil tank 10 and is connected to the input end of the pneumatic diaphragm pump 23 through a pipe fitting. After passing through the pneumatic diaphragm pump 23, the output end of the pneumatic diaphragm pump 23 is connected to the first port of the three-way valve through a pipe fitting, and the third port of the three-way valve returns to the oil tank 10 through the return oil pipe; the first port of the three-way valve is connected to the pneumatic diaphragm pump 23, the second port is connected to the sampling container 22, and the third port is connected to the return oil pipe; the connection between the first port and the second port or the third port of the three-way valve is controlled by a switch, so that the oil pipe loop is connected to the sampling container 22. When the switch is turned on, part of the oil can enter the sampling container 22. When it is closed, all the oil returns to the oil tank 10 through the return oil pipe.

[0035] In order to achieve adjustable position of the oil extraction port of the flexible oil pipe 25, a traction mechanism 30 is also included. The traction mechanism 30 includes a pair of parallel guide rails 36 arranged in the oil tank 10. The pair of guide rails 36 are vertically arranged, one end of the pair of guide rails 36 is fixed to the bottom of the oil tank 10, and the other end of the pair of guide rails 36 is fixed to the top of the oil tank 10. A traction block 37 is provided on the pair of guide rails 36. One end of the flexible oil pipe 25 located in the oil tank 10 is connected to the traction block 37. The oil extraction port is provided on the traction block 37 and is connected to the flexible oil pipe 25.

[0036] A pair of bearing brackets are provided on the supporting platform 24 on one side of the pneumatic diaphragm pump 23, and a winch 31 is provided on the bearing bracket. A rocker arm 32 is provided at one end of the winch 31, and the winch 31 has a wire groove. A traction rope 33 is provided in the wire groove. The traction rope 33 passes through a plurality of guide brackets 34 from the top of the oil tank 10 into the tank body of the oil tank 10 and is connected to the traction block 37. The traction block 37 is driven by the winch 31 to move linearly along the guide rail 36 to adjust the position of the oil outlet.

[0037] In one embodiment, a pair of guide brackets 34 are provided on the top of the oil tank 10, wherein one of the guide brackets 34 is arranged at the edge of the top of the oil tank 10, and a guide bracket 34 is also provided at the bottom of the oil tank 10. The traction rope 33 is guided by three guide brackets 34, and the guide bracket 34 includes a bracket and a roller arranged on the bracket.

[0038] In one embodiment, the top of the oil tank 10 is also provided with a sealing flange 35 to cooperate with the traction rope 33. The sealing flange 35 from which the traction rope 33 is led is integrated with a cylindrical felt, which is used to clean the oil on the traction rope to prevent it from being brought out of the tank.

[0039] In one embodiment, the bottom of the guide rail 36 is fixed to the bottom of the oil tank 10 by means of a magnetic chassis or welding.

[0040] During sampling, the winch 31 in the traction mechanism 30 pulls the traction block 37 in the oil tank 10 through the traction rope 33, and then adjusts and sets the depth of the sampling port. After reaching the specified position, the pneumatic diaphragm pump 23 outside the oil tank 10 is turned on, and the pressure difference between the inside and outside of the tank and the pumping action are used to suck out the oil in the oil tank 10 and flow it into the sampling container. This process is repeated in sequence to perform sampling operations at various points.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tank bottom sampling oil tank oil sampling device, characterized in that: The sampling mechanism comprises a support platform provided on the outside of the oil tank body, a pneumatic diaphragm pump being provided on the support platform, an input end of the pneumatic diaphragm pump being connected to one end of a retractable flexible oil pipe in the oil tank through a pipe penetrating the oil tank body, and an output end of the pneumatic diaphragm pump being provided with a movable sampling container; The oil tank further comprises a traction mechanism, the traction mechanism comprising a pair of guide rails disposed within the oil tank body, the pair of guide rails being provided with slidably fitted traction blocks, the other end of the flexible oil pipe being connected to the traction blocks, and the traction blocks being provided with an oil extraction port communicating with the flexible oil pipe; The traction mechanism further comprises a winch arranged outside the oil tank body, the winch is provided with a traction rope, and the traction rope passes through the top of the oil tank into the tank body and is connected to the traction block.

2. The tank bottom sampling device for oil tanks according to claim 1, characterized in that: The flexible oil pipe is spirally coiled in the oil tank.

3. The tank bottom sampling device for oil tanks according to claim 1, characterized in that: The pneumatic diaphragm pump is connected to an external air source through an air source dual-connector. A bracket is provided on the support platform for mounting the pneumatic diaphragm pump and the air source dual-connector.

4. The tank bottom sampling device for oil tanks according to claim 1, characterized in that: The output end of the pneumatic diaphragm pump is connected to the first port of the three-way valve through a pipe, the second port of the three-way valve is connected to the oil nozzle, the sampling container is provided below the oil nozzle, and the third port of the three-way valve is provided with an oil return pipe.

5. The tank bottom sampling device for oil tanks according to claim 1, characterized in that: A pair of bearing brackets are provided on the support platform, the winch is provided on the bearing bracket, one end of the winch is provided with a rocker arm, the winch has a wire groove, and the traction rope is provided in the wire groove.

6. The tank bottom sampling device for oil tanks according to claim 1, characterized in that: A pair of guide brackets are provided on the top of the oil tank, one of which is arranged at the edge of the top of the oil tank. A guide bracket is also provided at the bottom of the oil tank. The traction rope is guided by three guide brackets. The guide bracket includes a bracket and a roller arranged on the bracket.

7. The tank bottom sampling device for oil tanks according to claim 1, characterized in that: A sealing flange is provided on the top of the oil tank to cooperate with the traction rope, and a cylindrical felt is integrated in the sealing flange where the traction rope is led out.

8. The tank bottom sampling device for oil tanks according to any one of claims 1 to 7, characterized in that: The support platform is also provided with a machine cover, which is formed by bending and welding sheet metal parts.

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