Safe loading and unloading vehicle system for product oil

Abstract

The utility model relates to a safe loading and unloading truck system for product oil, which comprises a storage tank, a loading and unloading pump, a flame arrester, a pneumatic regulating valve, a first manual regulating valve, a loading arm and a truck tank which are sequentially connected through a main pipeline, and a flow meter is arranged on the main pipeline and between the pneumatic regulating valve and the first manual regulating valve; the device further comprises a pressure relief pipeline, one end of the pressure relief pipeline is arranged between the flame arrester and the loading and unloading pump, the other end of the pressure relief pipeline is arranged between the loading arm and the pneumatic regulating valve, a second manual regulating valve and a third manual regulating valve are arranged on the pressure relief pipeline, and a one-way valve is arranged on the pressure relief pipeline and located between the second manual regulating valve and the third manual regulating valve. By arranging the pressure relief pipeline, the safety risk caused by overpressure of oil products in the pipeline during unloading of the finished oil products is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical industry, in particular to a system for safely loading and unloading finished oil vehicles. Background Art

[0002] At present, finished oil is loaded onto trucks and connected to oil storage tanks through oil pipelines. The oil pipelines are equipped with lift pipes and regulating valves. There is no place for the oil between the lift pipes and the regulating valves to release pressure. In case of hot weather, the volume of the oil will increase greatly and the pipeline is a closed space. The increase in pressure will increase the pipeline pressure and may cause pipeline overpressure. In severe cases, oil leakage and volatile oil and gas will evaporate directly into the atmosphere, increasing the risk of fire and explosion, and seriously endangering safety and environmental protection. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a system for safely loading and unloading finished oil.

[0004] The utility model adopts the technical solution to solve the above technical problems: a finished oil safe loading and unloading vehicle system, comprising a storage tank, a loading and unloading pump, a flame arrester, a pneumatic regulating valve, a first manual regulating valve, a crane pipe and a vehicle tank connected in sequence through a main pipe, and a flow meter is also provided on the main pipe between the pneumatic regulating valve and the first manual regulating valve;

[0005] It also includes a pressure relief pipeline, one end of which is arranged between the flame arrester and the loading and unloading pump, and the other end is arranged between the crane pipe and the pneumatic regulating valve. A second manual regulating valve and a third manual regulating valve are arranged on the pressure relief pipeline, and a one-way valve is arranged between the second manual regulating valve and the third manual regulating valve on the pressure relief pipeline.

[0006] As a preferred solution, a breathing valve is provided on the vehicle tank.

[0007] As a preferred solution, the flame arrester is a detonation flame arrester.

[0008] As a preferred solution, a filter and a thermometer are provided in sequence on the main pipe between the pneumatic regulating valve and the first manual regulating valve.

[0009] As a preferred solution, a batch controller is also included, and the nozzle of the crane pipe is equipped with a liquid level detector. The batch controller is respectively connected to the loading and unloading pump, the pneumatic regulating valve, the flow meter and the liquid level detector.

[0010] As a preferred solution, a pressure gauge is provided on the vehicle tank.

[0011] As a preferred solution, the vehicle tank and the crane pipe are connected via a crane pipe liquid phase joint.

[0012] As a preferred solution, the tank truck is provided with a tank, and the tank truck and the liquid phase joint of the crane pipe are connected through a ball valve at the bottom of the tank truck.

[0013] The beneficial effects of the present application are as follows: the present application sets up a pressure relief pipeline, and when the finished oil is unloaded, the third manual regulating valve and the second manual regulating valve are opened in sequence, and the pressure relief pipeline and the storage tank form a passage, so that when the pressure is high, a part of the oil flows into the pressure relief pipeline, and the oil pushes open the one-way valve and returns to the storage tank through the main pipeline, thereby achieving the effect of pressure relief, and effectively avoiding the safety risks caused by overpressure of the oil in the pipeline when the finished oil is unloaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Markings in the figure: 1. tank truck, 101. tank truck, 2. main line, 3. crane pipe, 4. first manual regulating valve, 5. pneumatic regulating valve, 6. flame arrester, 7. second manual regulating valve, 8. one-way valve, 9. pressure relief pipeline, 10. third manual regulating valve. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] See also Figure 1 The embodiment of the utility model provides a finished oil safe loading and unloading system, including a storage tank, a loading and unloading pump, a flame arrester 6, a pneumatic regulating valve 5, a first manual regulating valve 4, a crane pipe 3 and a vehicle tank 101 connected in sequence through a main pipeline 2, a flow meter is also provided on the main pipeline 2 between the pneumatic regulating valve 5 and the first manual regulating valve 4, and also includes a pressure relief pipeline 9, one end of the pressure relief pipeline 9 is arranged between the flame arrester 6 and the loading and unloading pump, and the other end is arranged between the crane pipe 3 and the pneumatic regulating valve 5, a second manual regulating valve 7 and a third manual regulating valve 10 are arranged on the pressure relief pipeline 9, and a check valve 8 is provided on the pressure relief pipeline 9 between the second manual regulating valve 7 and the third manual regulating valve 10.

[0018] Among them, a breathing valve is provided on the vehicle tank 101, and a pressure gauge is also provided on the vehicle tank 101. The flame arrester 6 is a detonation flame arrester, and a filter and a thermometer are provided in sequence on the main line 2 between the pneumatic regulating valve 5 and the first manual regulating valve 4.

[0019] Specifically, the tank 101 and the crane pipe 3 are connected through a crane pipe liquid phase joint, the tank truck 1 has the tank 101, and the tank 101 and the crane pipe liquid phase joint are connected through a ball valve at the bottom of the tank truck. It should be noted that the parts not described in detail in this application are all prior art.

[0020] During loading, the third manual regulating valve 7 and the second manual regulating valve 10 are both in a closed state.

[0021] When unloading, the third manual regulating valve 7 and the second manual regulating valve 10 are opened in sequence, and the pressure relief pipeline 9 forms a passage with the storage tank, so that when the pressure is high, a part of the oil flows into the pressure relief pipeline 9, and the oil pushes open the one-way valve 8 and returns to the storage tank through the main pipeline 2, achieving the effect of pressure relief, and effectively avoiding the safety risk caused by overpressure of oil in the pipeline when the finished oil is unloaded.

[0022] Of course, the present invention is not limited to the above-described implementations. Several other implementations based on the design concept of the present invention are provided below.

[0023] For example, in other embodiments, different from the embodiments described above, a batch controller is also included, the pipe mouth of the crane pipe 3 is equipped with a liquid level detector, and the batch controller is respectively connected to the loading and unloading pump, the pneumatic regulating valve 5, the flow meter, the thermometer and the liquid level detector.

[0024] The liquid level detector monitors the oil level in the tank in real time. When the liquid level detector 18 detects that the liquid level has reached the set safety height, the batch controller controls the loading and unloading pump to stop working, thereby stopping loading and improving the safety of loading.

[0025] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model fall within the protection scope of the present utility model.

Claims

1. A system for safe loading and unloading of refined oil, characterized in that: It comprises a storage tank, a loading and unloading pump, a flame arrester (6), a pneumatic regulating valve (5), a first manual regulating valve (4), a crane pipe (3) and a vehicle tank (101) which are sequentially connected via a main pipe (2); a flow meter is also provided between the pneumatic regulating valve (5) and the first manual regulating valve (4) on the main pipe (2); The device also includes a pressure relief pipeline (9), one end of which is arranged between the flame arrester (6) and the loading and unloading pump, and the other end of which is arranged between the crane pipe (3) and the pneumatic regulating valve (5). A second manual regulating valve (7) and a third manual regulating valve (10) are arranged on the pressure relief pipeline (9), and a one-way valve (8) is arranged on the pressure relief pipeline (9) between the second manual regulating valve (7) and the third manual regulating valve (10).

2. A finished oil safe loading and unloading system according to claim 1, characterized in that: The vehicle tank (101) is provided with a breathing valve.

3. A finished oil safe loading and unloading system according to claim 1, characterized in that: The flame arrester (6) is a detonation flame arrester.

4. A finished oil safe loading and unloading system according to claim 1, characterized in that: A filter and a thermometer are provided in sequence on the main pipe (2) between the pneumatic regulating valve (5) and the first manual regulating valve (4).

5. A finished oil safe loading and unloading system according to claim 1, characterized in that: It also includes a batch controller, the nozzle of the crane pipe (3) is equipped with a liquid level detector, and the batch controller is respectively connected to the loading and unloading pump, the pneumatic regulating valve (5), the flow meter and the liquid level detector.

6. A finished oil safe loading and unloading system according to claim 1, characterized in that: The vehicle tank (101) is provided with a pressure gauge.

7. A finished oil safe loading and unloading system according to claim 1, characterized in that: The vehicle tank (101) and the crane pipe (3) are connected via a crane pipe liquid phase joint.

8. A system for safely loading and unloading finished oil according to claim 7, characterized in that: The tank truck (1) is provided with a tank (101), and the tank (101) and the crane pipe liquid phase joint are connected via a ball valve at the bottom of the tank truck.

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