Skid-mounted airtight oil unloading device of single centrifugal pump
By designing a single centrifugal pump skid-mounted closed oil unloading device, the problems of pressure fluctuation and safety in traditional oil unloading methods have been solved, achieving stability and safety in the oil unloading process and improving oil unloading efficiency and quality.
Patent Information
- Application Number
- CN202520004713.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Traditional oil unloading methods lack pressure regulation and buffering devices, resulting in uncontrollable pressure fluctuations, which affect the smoothness of oil unloading and the life of equipment. In addition, they are not equipped with filtration systems, which affect the efficiency and quality of oil unloading. Furthermore, the lack of safety systems makes them prone to fire and explosion.
Design a single centrifugal pump skid-mounted closed oil unloading device, including a buffer tank, an oil unloading pump, a pressure device, a vent riser, a flame arrester, an electrostatic overflow device, etc., to realize a closed oil unloading process. Equipped with a filter and an automatic control system, it ensures stable pressure, prevents fire and explosion, and improves oil unloading efficiency and quality.
By implementing a closed-loop oil unloading process, the volatilization and leakage of oil and gas are reduced, the risk of fire and explosion is lowered, the smoothness and safety of the unloading process are improved, and the lifespan of equipment and environmental protection are ensured.
Smart Images
Figure CN223737709U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of petrochemical technology, and in particular to a skid-mounted closed oil unloading device for a single centrifugal pump. Background Technology
[0002] In today's petrochemical industry, the loading and unloading of oil products is a crucial link with extremely high safety requirements. Oil products are flammable, explosive, and volatile. Any tiny spark, static discharge, or leak that occurs during the unloading process can cause serious fires, explosions, or other dangerous situations. In addition, when unloading oil products, attention must also be paid to the pollution to the environment caused by oil evaporation or leakage.
[0003] Traditional oil unloading methods often suffer from pressure fluctuations due to the lack of pressure regulation and buffering devices. This unstable pressure not only severely affects the smoothness of oil unloading but can also cause excessive wear and impact on equipment such as pipelines, valves, and oil pumps, shortening their service life and increasing equipment maintenance and replacement costs. Secondly, traditional oil unloading methods lack filtration systems, so solid particles, impurities, and moisture that may be mixed in the oil cannot be adequately removed, affecting unloading efficiency and quality. In addition, traditional oil unloading devices lack safety systems and are prone to reacting with volatile or leaked oil when exposed to flames or static electricity, potentially causing fires and explosions, injuring operators and equipment, and polluting the environment. Utility Model Content
[0004] The purpose of this invention is to provide a skid-mounted closed oil unloading device for a single centrifugal pump, thereby solving the technical problems existing in the prior art.
[0005] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:
[0006] A single centrifugal pump skid-mounted closed oil unloading device includes: a base, a buffer tank disposed on top of the base, an oil unloading pump disposed on one side of the buffer tank, and a pressure device disposed on the other side of the buffer tank; the base has the supporting force to bear preset components; the buffer tank is equipped with a safety device; the pressure device is used to measure the pressure of oil in the pipeline; a vent riser is provided at the middle position of the top of the buffer tank, which is used to release the gas inside the buffer tank during the oil unloading process; a flame arrester and a breather valve are provided at the top of the vent riser; the flame arrester is used to prevent the spread of fire; and the breather valve is used to balance the internal pressure of the buffer tank.
[0007] Furthermore, a safety device and an electrostatic overflow device are respectively provided on both sides of the vent riser; the electrostatic overflow device passes through the buffer tank and is used to prevent static electricity accumulation and oil leakage.
[0008] Furthermore, a connecting pipe is provided on one side of the buffer tank. The connecting pipe is divided into a first connecting pipe and a second connecting pipe. Both the first connecting pipe and the second connecting pipe are connected to the unloading arm through the pressure device. The first connecting pipe is connected to the first oil inlet through the unloading arm. The second connecting pipe is connected to the second oil inlet through the filter and the unloading arm.
[0009] Furthermore, the other side of the buffer tank is connected to the input end of the unloading pump, and the output end of the unloading pump is connected to the drain pipe.
[0010] Furthermore, the buffer tank is provided with a level gauge, a level transmitter, and a temperature device in sequence along its circumference on its outer surface; the level transmitter provides the automatic control system with the internal liquid level data of the buffer tank; and the buffer tank is provided with at least two electromagnetic heating devices.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] This invention encloses the oil unloading process by incorporating a pressure device, vent riser, breather valve, electrostatic overflow device, flame arrester, and safety devices. This effectively reduces oil and gas evaporation and leakage, and prevents fires, explosions, and other hazards, thereby reducing environmental pollution and improving the safety of personnel and equipment. Furthermore, the inclusion of a buffer tank, level gauge, level transmitter, temperature device, filter, and unloading pump ensures the stability of the unloading process and enables automated and precise control, improving unloading efficiency and quality. Attached Figure Description
[0013] Figure 1 This is the front view of the present invention;
[0014] Figure 2 This is a top view of the present invention;
[0015] Figure 3 This is a side view of the oil unloading pump of this utility model;
[0016] In the diagram: 1. Base; 2. Buffer tank; 3. Unloading arm; 4. Pressure device; 5. Filter; 6. Safety device; 7. Flame arrester; 8. Breather valve; 9. Vent riser; 10. Static overflow device; 11. Level gauge; 12. Level transmitter; 13. Temperature device; 14. Unloading pump; 15. Electromagnetic heating device; 16. First oil inlet; 17. Second oil inlet; 18. First connecting pipe; 19. Second connecting pipe. Detailed Implementation
[0017] To make the content of this utility model easier to understand, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.
[0018] like Figure 1-3 As shown, this embodiment provides a single centrifugal pump skid-mounted closed oil unloading device, including: a base 1, a buffer tank 2 disposed on the top of the base 1, an oil unloading pump 14 disposed on one side of the buffer tank 2, and a pressure device 4 disposed on the other side of the buffer tank 2; the base 1 has the supporting force to bear preset components; the buffer tank 2 is equipped with a safety device 6, which includes: a safety valve, a rupture disc, and a combustible gas alarm system. The safety valve can ensure that when the pressure inside the buffer tank 2 exceeds a preset value, the safety valve automatically opens to release the internal pressure of the buffer tank 2. Release; the rupture disc ruptures when the pressure rises rapidly, quickly releasing the pressure and providing protection; the safety valve, rupture disc, and combustible gas alarm system are existing technologies and will not be described in detail here; the pressure device 4 is used to measure the pressure of the oil in the pipeline; the pressure device 4 can ensure that the oil maintains stable pressure during transportation, allowing it to flow smoothly and avoiding insufficient pressure; the pressure device 4 is also installed on the connecting pipe and the drain pipe; one side of this device is connected to the explosion-proof power distribution cabinet and the PLC control cabinet, and the automatic control system is installed inside the PLC control cabinet.
[0019] Furthermore, a venting riser 9 is provided at the top center of the buffer tank 2. The venting riser 9 is used to release the gas inside the buffer tank 2 during the oil unloading process, thereby ensuring normal internal pressure, improving unloading speed and efficiency, and providing a safe working environment for operators. A flame arrester 7 and a breather valve 8 are provided at the top of the venting riser 9. The flame arrester 7 is used to prevent the spread of fire; the breather valve 8 is used to balance the internal pressure of the buffer tank 2. Safety devices 6 and electrostatic overflow devices 10 are respectively provided on both sides of the venting riser 9. The electrostatic overflow device 10 penetrates the buffer tank 2 and is used to prevent static electricity accumulation and oil leakage during the oil unloading process. It can promptly eliminate or dissipate static charge, thereby reducing the risk of fire and explosion. On the other hand, the electrostatic overflow device 10 can transmit a signal to the automatic control system when the liquid level inside the buffer tank 2 reaches a preset upper limit, thereby stopping the oil unloading operation, preventing oil leakage and waste, and reducing environmental pollution and safety hazards.
[0020] Furthermore, a connecting pipe is provided on one side of the buffer tank 2. The connecting pipe is divided into a first connecting pipe and a second connecting pipe. Both the first connecting pipe and the second connecting pipe are connected to the unloading arm 3 through the pressure device 4. The first connecting pipe 18 is connected to the second oil inlet 17 through the unloading arm 3. The second connecting pipe 19 is connected to the second oil inlet 17 through the filter 5 and the unloading arm 3. Both the first oil inlet 17 and the second oil inlet 17 are equipped with solenoid valves. The unloading arm 3 can be flexibly connected to different types of transport vehicles, and the oil flow rate can be controlled by adjusting the valve of the unloading arm 3. The other side of the buffer tank 2 is connected to the input end of the unloading pump 14, and the output end of the unloading pump 14 is connected to the drain pipe. The unloading pump 14 is a centrifugal pump, which provides power for extracting oil from the transport vehicle. It has a simple structure, stable operation, and a large flow rate. The outer surface of the buffer tank 2... A level gauge 11, a level transmitter 12, and a temperature device 13 are sequentially arranged along the circumference of the buffer tank 2. The level transmitter 12 provides the automatic control system with the internal liquid level data of the buffer tank 2. The buffer tank 2 is equipped with at least two electromagnetic heating devices 15. During operation, crude oil enters through the first inlet 17 and the second inlet 17, then enters the unloading arm 3 and the filter 5, and then enters the buffer tank 2. When the crude oil in the buffer tank 2 reaches a preset value of 9 / 10, the automatic control system drives the unloading pump 14 to start, and pumps the crude oil out through the drain pipe. When the crude oil level is lower than the preset level, the unloading pump 14 is turned off. When the electrostatic overflow device 10 in the buffer tank 2 detects that the crude oil inside the buffer tank 2 has reached the high liquid level preset value, the automatic control system controls the solenoid valves of the first inlet 17 and the second inlet 17 to automatically close to prevent crude oil leakage.
[0021] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.
Claims
1. A skid-mounted, closed oil unloading device for a single centrifugal pump, characterized in that: Include: Base (1), set in the buffer tank (2) on the top of the base (1), set in the buffer tank (2) on one side of the oil pump (14) and set in the buffer tank (2) on the other side of the pressure device (4); The base (1) has a supporting force to carry the preset components; The buffer tank (2) is provided with a safety device (6); The pressure device (4) is used to measure the pressure of the oil in the pipeline; The buffer tank (2) is provided with a vent standpipe (9) in the middle of the top, the vent standpipe (9) is used to discharge the gas inside the buffer tank (2) during the oil unloading process; The vent standpipe (9) is provided with a flame arrestor (7) and a breather valve (8) at the top; The flame arrestor (7) is used to prevent the spread of fire; The breather valve (8) is used to balance the internal pressure of the buffer tank (2).
2. The single centrifugal pump skid-mounted closed oil unloading apparatus according to claim 1, characterized in that: The vent standpipe (9) is provided with a safety device (6) and an electrostatic overflow device (10) on both sides; The electrostatic overflow device (10) penetrates the buffer tank (2) and is used to prevent static electricity accumulation and oil leakage.
3. The single centrifugal pump skid-mounted closed oil unloading apparatus according to claim 2, characterized in that: One side of the buffer tank (2) is provided with a connecting pipe, the connecting pipe is divided into a first connecting pipe (18) and a second connecting pipe (19), the first connecting pipe (18) and the second connecting pipe (19) are connected with the unloading crane pipe (3) through the pressure device (4); The first connecting pipe (18) is connected with the second oil inlet (17) through the unloading crane pipe (3); The second connecting pipe (19) is connected with the second oil inlet (17) through the filter (5) and the unloading crane pipe (3).
4. The single centrifugal pump skid-mounted closed oil unloading apparatus according to claim 3, characterized in that: The other side of the buffer tank (2) is connected with the input end of the oil pump (14), and the output end of the oil pump (14) is connected with the oil discharge pipe.
5. The single centrifugal pump skid-mounted closed oil unloading apparatus according to claim 4, characterized in that: The outer surface of the buffer tank (2) is provided with a liquid level meter (11), a liquid level transmitter (12) and a temperature device (13) along its circumferential direction in sequence; The liquid level transmitter (12) provides the internal liquid level data of the buffer tank (2) for the automatic control system; The buffer tank (2) is provided with at least two electromagnetic heating devices (15).