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Crude oil switching integrated control device and control method

A technology of integrated control and crude oil, applied in chemical instruments and methods, feeding devices, control/regulation processes, etc., can solve problems such as low pump inlet pressure, overflow of buffer tank liquid level, interlocking pump stop, etc.

Active Publication Date: 2020-09-25
XIAN CHANGQING TECH ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this control method has the following disadvantages: During the switching process of the oil pump, it takes a certain time interval to open the electric valve at the inlet and outlet of the pump. Possibly; in addition, when starting the oil delivery pump and opening the pump inlet and outlet electric valves at the same time, the pump inlet pressure is too low or the pump outlet pressure is too high and the pump is interlocked to stop the pump, resulting in the failure of the pump to start

Method used

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  • Crude oil switching integrated control device and control method
  • Crude oil switching integrated control device and control method
  • Crude oil switching integrated control device and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] according to figure 1 The shown integrated integrated control device for transferring crude oil includes a three-way valve 1, an emergency oil tank 6 and a main oil pipeline; The input end of the oil pipeline is connected; the output end of the accident oil tank 6 and the output end of the main oil pipeline are respectively connected with the crude oil transportation pipeline; the main oil pipeline includes a separation buffer tank 2, an electric valve 3, a main oil pump 4, Standby oil delivery pump 5, liquid level measuring device and pressure measuring device; Described separation buffer tank 2 is respectively connected with liquid level measuring device, main oil delivery pump 4 and standby oil delivery pump 5; Described main oil delivery pump 4 and standby oil delivery pump The input end and output end of 5 are respectively connected with an electric valve 3 and a pressure measuring device; the input end of the separation buffer tank 2 is connected with a pressure ...

Embodiment 2

[0041] according to figure 1The shown integrated integrated control device for transferring crude oil differs from Embodiment 1 in that it also includes a control system; The oil pump 5 , the liquid level measuring device and the pressure measuring device are electrically connected to obtain the data information of the main oil delivery pipeline and send control signals to the electric valve 3 , the main oil delivery pump 4 and the standby oil delivery pump 5 .

[0042] Preferably, the three-way valve is an electric three-way valve 1 .

[0043] In actual use, the electric three-way valve 1 is turned to direction B, crude oil enters the separation buffer tank 2, and the liquid level measuring device and the pressure measuring device respectively transmit the liquid level and pressure signals of the separation buffer tank 2 to the control system; when the separation buffer When the liquid level of tank 2 exceeds the preset upper limit, the control system sends an instruction t...

Embodiment 3

[0047] according to figure 1 The shown integrated control device for transferring crude oil is different from the second embodiment in that the liquid level measuring device uses a liquid level transmitter 7 .

[0048] Preferably, the pressure measuring device adopts a pressure transmitter 8 .

[0049] In actual use, the liquid level measuring device and the pressure measuring device adopt the technical solution, which not only makes the obtained pressure or liquid level information more accurate, but also facilitates automatic control.

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Abstract

The invention belongs to the technical field of oil and gas field ground engineering construction, and relates to a crude oil switching integrated control device and a control method. The crude oil switching integrated control device is formed by organically combining a three-way valve, an emergency crude storage tank and a main oil conveying pipeline, and the main oil conveying pipeline is composed of a separation buffer tank, an electric valve, a main oil conveying pump, a standby oil conveying pump, a liquid level measuring device and a pressure measuring device. When a main oil conveying flow path of the crude oil switching integrated control device fails and is switched to a standby oil conveying flow path, it is avoided that an inlet and outlet valve of a pump is not completely switched on after the pump is started and logic crash of interlocked pump stop is caused by pressure overrun of an inlet and outlet of the pump; and meanwhile, in a pump switching process, the risk of tankoverflow due to liquid level overrun of a buffer tank is avoided. By means of the crude oil switching integrated control device, when the standby oil conveying flow path fails, a normal production flow path is switched to an emergency flow path, after the main or standby oil conveying pump is started, the emergency flow path is switched to the normal production flow path, and therefore stable andsafe production operation is realized.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field surface engineering construction, and in particular relates to an integrated control device and control method for crude oil transfer integration. Background technique [0002] The crude oil transfer integrated device mainly completes the functions of heating, separating and buffering the crude oil mixture from the oil field station, and boosting the output, such as image 3 shown. [0003] Main oil delivery process: When the device is in normal operation, the electric three-way valve is turned to direction B, crude oil enters the separation buffer tank, the liquid level of the buffer tank is interlocked with the oil delivery pump, the high liquid level starts the pump and the low liquid level stops the pump, high high, low Low liquid level alarm to realize crude oil export. [0004] Standby oil delivery process: one oil delivery pump is used and the other is standby. When the main oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/14F17D3/01F17D5/00B01J19/00B01J4/00
CPCF17D1/14F17D3/01F17D5/00B01J19/002B01J4/001
Inventor 杨晓锋任晓峰吴宝祥刘晓丽李卫陈兆安姚欣伟左晨刘元刚
Owner XIAN CHANGQING TECH ENG
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