Unloading sledge type device based on crude oil medium

Abstract

The utility model relates to the technical field of crude oil transportation, in particular to an unloading sledge type device based on crude oil media, which comprises a temporary storage tank, an unloading pump, a pipe I, a pipe II and a valve I. The first end of the pipe I is used for inputting crude oil, and the second end of the pipe I is used for outputting crude oil. The temporary storage tank and the unloading pump are both arranged at the first pipe, and the unloading pump is located between the temporary storage tank and the oil tank; the first end of the pipe II is connected between the temporary storage tank and the unloading pump, and the second end is connected between the unloading pump and the oil tank; a valve I is arranged on the pipe II; when the unloading pump is damaged, the temporary storage tank can smoothly discharge crude oil to the oil tank through the pipe II; when the pressure in the first pipe between the unloading pump and the oil tank is high, crude oil can pass through the second pipe, and at the moment, the crude oil in the first pipe between the unloading pump and the oil tank can enter the second pipe and then flow back into the first pipe between the temporary storage tank and the unloading pump from the second pipe. The high-pressure state of the first pipe between the unloading pump and the oil tank is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crude oil transportation, in particular to a truck unloading skid-type device based on crude oil medium. Background Art

[0002] With the rapid development of domestic oil fields, the demand for unloading of crude oil and oil products at pipeline stations in various oil fields has also greatly increased. Under the premise of ensuring the safe operation of pipelines, it is urgent and necessary to carry out research on optimizing pipeline operation modes, realize automated control of unloading operations, and improve economic benefits.

[0003] The current unloading operation is that crude oil is transported from a transport truck to an unloading skid-type device. The oil level in the transport truck is higher than the oil level in the unloading skid-type device, which makes it easy for high pressure to occur in the unloading skid-type device. The unloading skid-type device simply relies on the on-site operator to manually control the pump and operate the manual valve to complete the process. The start and end of the entire unloading process all rely on the experience of the on-site operator and real-time observation of the site. The safety factor is low and the following problems are prone to occur.

[0004] 1. The unloading pump in the unloading skid device is prone to damage, making it impossible to unload crude oil and causing high-pressure crude oil to be stored in temporary storage tanks and unable to be discharged, which is prone to safety accidents.

[0005] 2. When the unloading pump transports crude oil from the temporary storage tank to the oil tank, high pressure instability may occur in the pipeline between the unloading pump and the oil tank, which may easily lead to safety accidents. Utility Model Content

[0006] In view of the above problems existing in the prior art, the utility model provides a skid-type unloading device based on crude oil medium.

[0007] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0008] A skid-type unloading device based on crude oil medium, comprising a temporary storage tank, an unloading pump, a first pipe, a second pipe and a first valve,

[0009] The first end of the pipe is used for inputting crude oil, and the second end is used for outputting the crude oil;

[0010] The temporary storage tank and the unloading pump are both arranged at one point of the pipe, and the unloading pump is located between the temporary storage tank and the oil tank;

[0011] The first end of the second pipe is connected between the temporary storage tank and the unloading pump, and the second end is connected between the unloading pump and the oil tank; the valve one is arranged on the second pipe.

[0012] Preferably, it also includes a control box, which is at least electrically connected to valve one.

[0013] Preferably, the pipe 1 is further provided with a sensor 1 for detecting pressure, and the sensor 1 is electrically connected to the control box;

[0014] The sensor 1 is at least arranged between the unloading pump and the oil tank.

[0015] As a preferred embodiment, it also includes pipe three and valve two,

[0016] The valve 2 is arranged on the pipe 3, and the valve 2 is electrically connected to the control box;

[0017] The first end of the pipe three is connected to the top of the temporary storage tank, and the second end is connected to the pipe one between the unloading pump and the oil tank.

[0018] Preferably, it further comprises an intrinsically safe touch screen, wherein the intrinsically safe touch screen is electrically connected to the control box.

[0019] Preferably, the control box is provided with an emergency stop button and / or an electrostatic grounding protector.

[0020] Preferably, a filter is further provided between the temporary storage tank and the first end of the tube one.

[0021] Preferably, it further comprises a pipe four, a first end of which is connected to at least one of the unloading pump, the filter, the top of the temporary storage tank and the bottom of the temporary storage tank.

[0022] Preferably, a mass flow meter is provided at the interface between the second end of the tube 1 and the oil tank.

[0023] Preferably, a liquid level detection device is provided in the temporary storage tank.

[0024] The utility model has at least the following beneficial effects:

[0025] 1. When the unloading pump is damaged, the temporary storage tank can discharge the crude oil smoothly through pipe 2. Specifically, open valve 1. When the crude oil flows from pipe 1 to the first end of pipe 2, the crude oil will flow from pipe 1 to pipe 2, and then flow back to pipe 1 through the second end of pipe 2, and finally flow out of pipe 1 to the oil tank.

[0026] 2. When the pressure in pipe one between the unloading pump and the oil tank is high, pipe two can allow crude oil to pass through. At this time, the crude oil in pipe one between the unloading pump and the oil tank can enter pipe two, and then flow back from pipe two to pipe one between the temporary storage tank and the unloading pump, so as to relieve the high pressure state of pipe one between the unloading pump and the oil tank.

[0027] 3. When unloading enters the final stage, when the liquid level detection device detects a low liquid level in the temporary storage tank, the control box can shut down the unloading pump in time, avoiding the vacuum and air intake in the pipe and / or the unloading pump, thus ensuring the safety of the equipment.

[0028] 4. By setting the mass flow meter on pipe one, the crude oil passing through pipe one can be accurately measured, ensuring the accuracy of the unloading data and realizing a safe and stable automated unloading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It shows the front view of the unloading skid device in some embodiments of the present application;

[0030] Figure 2 A top view of a car unloading sled device in some embodiments of the present application is shown.

[0031] The parts indicated by the numbers in the accompanying drawings are as follows:

[0032] 100, skid seat; 200, pipe one; 210, temporary storage tank; 220, unloading pump; 230, valve four; 240, filter; 250, mass flow meter; 300, pipe two; 310, valve one; 400, control box; 410, emergency stop button; 420, electrostatic grounding protector; 500, pipe three; 510, valve two; 600, intrinsically safe touch screen; 700, pipe four; 710, discharge valve; 800, operating column. DETAILED DESCRIPTION

[0033] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0034] like Figure 1-2 As shown, the present embodiment provides a skid-type unloading device based on crude oil medium, which includes a skid seat 100, a temporary storage tank 210, an unloading pump 220 and a pipe 200. The temporary storage tank 210, the unloading pump 220 and the pipe 200 are all installed on the skid seat 100 to facilitate the transportation and use of the entire unloading skid-type device; the first end of the pipe 200 can be connected to the oil unloading port of the tank truck, and the second end of the pipe 200 can be connected to the oil filling port of the oil tank. Through the connection of the pipe 200, the crude oil in the tank truck can be transported to the oil tank, thereby realizing the unloading operation of the crude oil in the tank truck; the temporary storage tank 210 and the unloading pump 220 are also arranged on the pipe 200, wherein the unloading pump 220 is located between the temporary storage tank 210 and the oil tank; when in use, the crude oil in the tank truck passes through the temporary storage tank 210 and the unloading pump 220 in sequence through the pipe 200, and is finally output to the oil tank from the second end of the pipe 200.

[0035] It can be understood that the unloading pump 220 on the pipe 200 is provided to provide power to transport the crude oil in the temporary storage tank 210 to the oil tank; when the unloading pump 220 is damaged, the crude oil cannot pass through the unloading pump 220 smoothly, the crude oil unloading operation cannot be carried out, and the crude oil in the temporary storage tank 210 cannot be discharged, which is prone to safety accidents.

[0036] In order to improve the safety of the unloading sled device, a second pipe 300 is also provided on the pipe 1 200. The first end of the second pipe 300 is connected between the temporary storage tank 210 and the unloading pump 220, and the second end of the second pipe 300 is connected between the unloading pump 220 and the oil tank. Two valves 1 310 are provided on the second pipe 300, and the opening and closing of the second pipe 300 can be controlled by the valve 1 310.

[0037] When the unloading pump 220 is damaged, the temporary storage tank 210 can discharge the crude oil smoothly through the pipe 2 300. Specifically, the valve 1 310 is opened. When the crude oil flows from the pipe 1 200 to the first end of the pipe 2 300, the crude oil will flow from the pipe 1 200 to the pipe 2 300, and then flow back to the pipe 1 200 through the second end of the pipe 2 300, and finally flow out from the pipe 1 200 to the oil tank.

[0038] The second pipe 300 is actually connected to the first pipe 200 in parallel with the unloading pump 220. When the unloading pump 220 is damaged and cannot allow the crude oil to pass smoothly, the second pipe 300 is opened, and the crude oil can pass through the unloading pump 220 through the second pipe 300, thereby ensuring smooth unloading of the crude oil. Of course, in order to ensure better transportation efficiency or flexibility when transporting crude oil through the second pipe 300, a pump body can also be set at the second pipe 300 in some embodiments.

[0039] It is worth mentioning that, through the arrangement of the second pipe 300 and the first valve 310, on the one hand, it is ensured that the unloading operation of crude oil can be smoothly carried out when the unloading pump 220 is damaged, and on the other hand, the unloading pump 220 can be repaired or replaced when the crude oil is transported through the second pipe 300. Of course, in order to avoid leakage at the crude oil unloading pump 220, a valve 3 (not shown in the figure) can be arranged on the pipe 1 200 on the side of the unloading pump 220 close to the temporary storage tank 210. When the unloading pump 220 is damaged, the valve 3 is closed first to prevent the crude oil from flowing to the unloading pump 220.

[0040] In some embodiments, a control box 400 is also provided on the unloading sled device, and a processor is provided in the control box 400 for realizing automatic control of the entire unloading sled device; wherein, the control box 400 is electrically connected to valve 1 310, and when the unloading pump 220 is damaged, the control box 400 can control the opening of valve 1 310, and when the unloading pump 220 can work normally, the control box 400 can control the closing of valve 1 310, thereby avoiding the need for manual operation of valve 1 310.

[0041] Furthermore, in order to improve the degree of automated control, the unloading pump 220, other valve bodies and pump bodies can be electrically connected to the control box 400. The control box 400 can obtain the status information of the unloading pump 220, and can then adaptively adjust the working status of other valve bodies and pump bodies.

[0042] In some embodiments, a sensor 1 (not shown in the figure) capable of detecting pressure is provided on the pipe 1 200. The sensor 1 is specifically arranged between the unloading pump 220 and the oil tank to detect the pressure of the pipe 1 200 between the unloading pump 220 and the oil tank, and the sensor 1 is electrically connected to the control box 400.

[0043] The reason for setting sensor 1 on pipe 1 200 between the unloading pump 220 and the oil tank is that there may be high pressure, which may cause instability in pipe 1 200 or the connection between pipe 1 200 and the oil tank. There are two main factors for high pressure in pipe 1 200 between the unloading pump 220 and the oil tank. One is that high pressure is likely to occur when the oil level in the tank truck is higher than the oil level in the unloading skid device, and the other is that high pressure is likely to occur when the pumping frequency of the unloading pump 220 is high.

[0044] By setting up the sensor 1, the pressure in the pipe 1 200 between the unloading pump 220 and the oil tank can be detected in real time, thereby avoiding safety accidents and improving safety.

[0045] Furthermore, a sensor electrically connected to the control box 400 may be provided.

[0046] Furthermore, the sensor 1 can be directly or indirectly connected to the valve 1 310 through the control box 400. Specifically, when the sensor 1 detects that the pressure in the pipe 1 200 is high, the valve 1 310 can be controlled to be opened, so that the pipe 2 300 can be used for crude oil to pass through. At this time, the crude oil in the pipe 1 200 between the unloading pump 220 and the oil tank can enter the pipe 2 300, and then flow back from the pipe 2 300 to the pipe 1 200 between the temporary storage tank 210 and the unloading pump 220, so as to relieve the high pressure state of the pipe 1 200 between the unloading pump 220 and the oil tank and improve safety.

[0047] It can be understood that since the pipe 200 between the unloading pump 220 and the oil tank is in a high-pressure state, when the valve 310 is opened, the crude oil will automatically flow from the high-pressure environment to the low-pressure environment, thereby allowing the crude oil to flow from the second end of the pipe 300 to the first end.

[0048] It is worth mentioning that the setting of pipe 2 300 provides a certain amount of accommodation space for crude oil, which can relieve the pressure in pipe 1 200 to a certain extent; after valve 1 310 is opened, pipe 2 300 can realize the flow of crude oil from a high-pressure environment to a low-pressure environment. Through the circulation of crude oil at both ends of the unloading pump 220, the high-pressure environment in pipe 1 200 between the unloading pump 220 and the oil tank can be better improved, thereby achieving pressure balance and improving safety.

[0049] Furthermore, the number of sensors 1 can be set to two, and the two sensors 1 are respectively arranged on both sides of the unloading pump 220, and the two sensors 1 can respectively detect the pressure at both ends of the inlet and outlet of the unloading pump 220. By setting up two sensors 1, the pressure values ​​at the inlet and outlet of the unloading pump 220 can be better monitored in real time to determine the operating state of the unloading pump 220, and can also play an auxiliary role in controlling the operating frequency of the unloading pump 220.

[0050] In some embodiments, a tube three 500 and a valve two 510 are provided in the unloading skid device; the valve two 510 is provided on the tube three 500, wherein the valve two 510 is electrically connected to the control box 400; the first end of the tube three 500 is connected to the top of the temporary storage tank 210, and the second end of the tube three 500 is connected to the tube one 200 between the unloading pump 220 and the oil tank.

[0051] In this embodiment, only valve four 230 is provided on pipe one 200 between the second end of pipe three 500 and the oil tank, and the opening and closing status of valve four 230 can be directly seen from the outside of the unloading skid device through the second end of pipe one 200.

[0052] When the unloading skid device of this embodiment is used, the pipe 1 200 or pipe 2 300 between the second end of pipe 3 500 and the temporary storage tank 210 may be blocked due to equipment damage. When pipe 1 200 and pipe 2 300 are both blocked, as the crude oil flows from the tank truck to the temporary storage tank 210, the crude oil in the temporary storage tank 210 will increase, and the crude oil in the temporary storage tank 210 will eventually overflow from the temporary storage tank 210 and push open the valve 2 510 to flow into pipe 3 500. The crude oil overflowing into pipe 3 500 will flow into pipe 1 200 through the second end of pipe 3 500. When the control box 400 fails to control the unloading pump 220 to discharge the crude oil in the temporary storage tank 210 in time, the crude oil in the temporary storage tank 210 will overflow, so that the crude oil flows into pipe 1 200 through the second end of pipe 3 500.

[0053] Since the second valve 510 is electrically connected to the control box 400, when the crude oil in the temporary storage tank 210 overflows and pushes the second valve 510 open, the control box 400 will obtain the opening information of the second valve 510 and then issue an alarm to prompt the staff to check the equipment such as the first pipe 200 and the second pipe 300. Similarly, a float switch can also be set in the temporary storage tank 210. When there is a high liquid level in the temporary storage tank 210, the float switch issues an alarm to prompt the staff.

[0054] It is understandable that in order to ensure stable crude oil unloading operations, the crude oil in the temporary storage tank 210 will not overflow during the normal unloading process to ensure that the temporary storage tank 210 can have a stable working state. When the crude oil in the temporary storage tank 210 overflows, on the one hand, it means that the working state of the temporary storage tank 210 is unstable at this time, and on the other hand, it also means that there are problems with the equipment such as pipe 1 200 and pipe 2 300. Through the setting of pipe 3 500 and valve 2 510 in this embodiment, the control box 400 can timely detect whether the crude oil in the temporary storage tank 210 overflows through the opening and closing state of valve 2 510, and pipe 3 500 can timely discharge the overflowed crude oil in the temporary storage tank 210, thereby improving the safety of the entire unloading skid device.

[0055] In some embodiments, an intrinsically safe touch screen 600 is provided on the unloading sled device, and the intrinsically safe touch screen 600 is electrically connected to the control box 400. The intrinsically safe touch screen 600 can visually display the data and status of the equipment electrically connected to the control box 400, and can perform some operational controls on these devices through the intrinsically safe touch screen 600, so that the unloading sled device has a higher degree of automation.

[0056] In some embodiments, an emergency stop button 410 is provided at the control box 400, and the operation of the entire unloading skid-type device can be stopped in time by operating the emergency stop button 410; for example, when the crude oil in the temporary storage tank 210 overflows, the crude oil pushes open the valve two 510, and at this time the control box 400 obtains the opening information of the valve two 510 and issues an alarm, and the staff can stop the operation of the entire unloading skid-type device in time by operating the emergency stop button 410, and then check and repair equipment such as pipe one 200 and pipe two 300.

[0057] Furthermore, an electrostatic grounding protector 420 is provided at the control box 400. Specifically, the control box 400 of this embodiment is arranged at the first end of the pipe 200. When connecting the pipe 200 and the oil unloading port of the tank truck, the electrostatic grounding protector 420 is also connected to the tank truck to improve the safety of the entire unloading operation.

[0058] In some embodiments, a filter 240 is provided on the pipe 1 200 between the temporary storage tank 210 and the tank truck, and the crude oil passes through the filter 240 and the temporary storage tank 210 in sequence when passing through the pipe 1 200. The setting of the filter 240 can better filter the crude oil flowing out of the tank truck.

[0059] In some embodiments, a tube 4 700 is provided on the unloading skid device, and the first end of the tube 4 700 is respectively connected to the unloading pump 220, the filter 240, the top of the temporary storage tank 210 and the bottom of the temporary storage tank 210, and the second end of the tube 4 700 is led out of the unloading skid device.

[0060] Specifically, the connection between the unloading pump 220 and the pipe four 700 can realize the discharge of crude oil or impurities accumulated at the unloading pump 220; the connection between the filter 240 and the pipe four 700 can realize the discharge of crude oil or impurities accumulated at the filter 240; the connection between the top of the temporary storage tank 210 and the pipe four 700 can realize the discharge of gas or impurities in the temporary storage tank 210, as well as the discharge of overflowed crude oil; the connection between the bottom of the temporary storage tank 210 and the pipe four 700 can realize the discharge of crude oil or impurities accumulated at the temporary storage tank 210.

[0061] Furthermore, corresponding discharge valves 710 may be provided at the connections between the pipe 4 700 and the unloading pump 220, the filter 240, the top of the temporary storage tank 210, and the bottom of the temporary storage tank 210, for ease of use.

[0062] In some embodiments, a mass flow meter 250 is provided at the interface between the second end of tube one 200 and the oil tank. Specifically, the mass flow meter 250 is provided on tube one 200 between the second end of tube two 300 and the second end of tube three 500 .

[0063] By setting the mass flow meter 250, the crude oil transported to the oil tank by the unloading skid device can be better measured; specifically, since the mass flow meter 250 is set on the pipe 1 200 and is located between the second end of the pipe 2 300 and the second end of the pipe 3 500, the crude oil in the pipe 1 200 and the pipe 2 300 flowing through the pipe 3 500 close to the temporary storage tank 210 must be measured by the mass flow meter 250 before finally entering the oil tank, while the crude oil flowing through the pipe 3 500 will not pass through the mass flow meter 250.

[0064] It can be understood that there are three delivery pipelines between the unloading skid device and the oil tank in this embodiment, namely, pipe 1 200, pipe 2 300 and pipe 3 500; pipe 1 200 and pipe 2 300 are both normal delivery pipelines for delivering crude oil to the oil tank, while pipe 3 500 is mainly used to discharge the crude oil in the temporary storage tank 210 when pipe 1 200 and pipe 2 300 are blocked, and when the crude oil overflows the top valve 2 510, the control box 400 will alarm to remind the staff, and then the staff will operate the emergency stop button 410 to stop the operation of the entire device. Therefore, the crude oil in pipe 1 200 and pipe 2 300 that normally flows through pipe 3 500 close to the temporary storage tank 210 needs to be metered, while the crude oil flowing through pipe 3 500 does not need to be metered.

[0065] In some embodiments, a liquid level detection device (not shown in the figure) is provided in the temporary storage tank 210, through which the liquid level detection device can detect in real time the liquid level of the crude oil in the temporary storage tank 210. When the liquid level of the crude oil in the temporary storage tank 210 reaches a set higher liquid level, the unloading process is started, and the unloading pump 220 starts to work. When the liquid level of the crude oil in the temporary storage tank 210 is low, the unloading process is closed, and the unloading pump 220 stops working to avoid idling.

[0066] In some embodiments, an operating column 800 is provided on the unloading sled device, and the staff can manually open and close the valve body on the unloading sled device through the operating column 800, which not only realizes automatic control but also provides the convenience of manual operation for the staff.

[0067] Furthermore, bimetallic thermometers, pressure gauges, flame arresters and other equipment can be installed on the unloading skid device to further improve the safety of the unloading process.

[0068] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A skid-type unloading device based on crude oil medium, characterized in that: Including temporary storage tank, unloading pump, pipe 1, pipe 2 and valve 1, The first end of the pipe is used for inputting crude oil, and the second end is used for outputting the crude oil; The temporary storage tank and the unloading pump are both arranged at one point of the pipe, and the unloading pump is located between the temporary storage tank and the oil tank; The first end of the second pipe is connected between the temporary storage tank and the unloading pump, and the second end is connected between the unloading pump and the oil tank; the valve one is arranged on the second pipe.

2. The unloading sled device according to claim 1, characterized in that: It also includes a control box, which is at least electrically connected to the valve one.

3. The unloading sled device according to claim 2, characterized in that: The pipe 1 is also provided with a sensor 1 for detecting pressure, and the sensor 1 is electrically connected to the control box; The sensor 1 is at least arranged between the unloading pump and the oil tank.

4. The unloading sled device according to claim 2, characterized in that: It also includes pipe three and valve two, The valve 2 is arranged on the pipe 3, and the valve 2 is electrically connected to the control box; The first end of the pipe three is connected to the top of the temporary storage tank, and the second end is connected to the pipe one between the unloading pump and the oil tank.

5. The unloading sled device according to any one of claims 2 to 4, characterized in that: It also includes an intrinsically safe touch screen, which is electrically connected to the control box.

6. The unloading sled device according to any one of claims 2 to 4, characterized in that: The control box is provided with an emergency stop button and / or an electrostatic grounding protector.

7. The unloading sled device according to claim 1, characterized in that: A filter is also provided between the temporary storage tank and the first end of the pipe one.

8. The unloading skid device according to claim 7, characterized in that: It also includes a pipe four, a first end of which is connected to at least one of the unloading pump, the filter, the top of the temporary storage tank, and the bottom of the temporary storage tank.

9. The unloading sled device according to claim 1, characterized in that: A mass flow meter is arranged at the second end of the tube.

10. The unloading skid device according to claim 1, characterized in that: A liquid level detection device is arranged in the temporary storage tank.

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