CO2 injection pump system
A technology of injection pump and injection pipeline, applied in the field of pump system, can solve the problems of consuming pump medium, long pre-cooling process, poor driving effect, etc., and achieve the effect of reducing volume and weight, light weight and reducing emissions
Active Publication Date: 2021-01-08
XIAN AEROSPACE PROPULSION INST +1
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Problems solved by technology
[0004] The purpose of the invention is to solve the existing CO 2 Injection pump system exists due to CO in the precooling process 2 It will vaporize quickly, and the reciprocating injection pump will 2 The driving effect is poor, and the vaporized CO needs to be discharged multiple times 2 , leading to the technical problems that the entire pre-cooling process takes a long time and consumes pump media, providing a CO 2 injection pump system
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[0024] The present invention will be further described below in conjunction with accompanying drawing pair and embodiment.
[0025] a CO 2 Infusion pump systems such as figure 2 As shown, it includes control cabinet 16 (including frequency converter, electrical switch, etc.) and injection pipeline, as well as inlet stop valve 1, centrifugal pump with inducer 2, inlet temperature gauge 3, and inlet pressure gauge arranged in sequence along the injection pipeline. 4. Flow meter 5, inlet safety valve 6, inlet accumulator 7, reciprocating injection pump 8, outlet safety valve 9, outlet accumulator 10, outlet pressure gauge 11, the pipeline after the outlet pressure gauge 11 is divided into two A pre-cooling electric cut-off valve 12 is set on one way, and the branch pipeline is used as a straight-line pre-cooling pipeline (pre-cooling bypass), and a check valve 13, an inlet pressure gauge 14 and an outlet cut-off Valve 15; the control cabinet 16 outputs a control signal to cont...
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The invention relates to a pump system, in particular to a CO2 injection pump system, which can be applied to coal bed gas and oil exploitation. The CO2 injection pump system is provided to solve thetechnical problems that through an existing CO2 injection pump system, CO2 is quickly vaporized in the pre-cooling process, a reciprocating injection pump has a poor driving effect on vaporized CO2, the vaporized CO2 needs to be discharged multiple times, and consequently consumed time is long and a pump medium is consumed in the whole pre-cooling process. The system comprises a control cabinet, an injection pipeline, an inlet stop valve, a centrifugal pump with an inducer, an inlet pressure gage, an inlet safety valve, a reciprocating injection pump, an outlet safety valve, an outlet energy accumulator and an outlet pressure gage, wherein the inlet stop valve, the centrifugal pump with the inducer, the inlet pressure gage, the inlet safety valve, the reciprocating injection pump, the outlet safety valve, the outlet energy accumulator and the outlet pressure gage are sequentially arranged along the injection pipeline, the portion, behind the outlet pressure gage, of the pipeline is divided into two paths, a pre-cooling electric stop valve is arranged on one path, and a one-way valve and an outlet stop valve are sequentially arranged on the other path.
Description
technical field [0001] The invention relates to a pump system, in particular to a CO 2 The injection pump system can be applied in coal bed methane and oil exploitation. Background technique [0002] CO 2 (Carbon dioxide) The pump medium injected into the pump is low-temperature liquid CO in a critical boiling state 2 , this state of CO 2 easily vaporized, making CO 2 The infusion pump has an air lock failure. To overcome this problem, CO 2 The injection pump usually adopts lower pump strokes, that is, increases the pump volume to reduce the pump strokes, so that the pump strokes usually do not exceed 300spm (strokes / min), so that CO 2 Injection pump plunger calorific value and pump inlet CO 2 The losses are small, which can significantly reduce the probability of air blockage failures. However, increasing the volume of the pump will increase the volume and weight of the pump, due to the CO 2 The road condition of the injection pump injected into the construction we...
Claims
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IPC IPC(8): F04B15/08F04B49/06F04B51/00F04B53/10
CPCF04B15/08F04B53/10F04B51/00F04B49/06F04B2015/0818Y02P90/70
Inventor 王伟光李瑜付瑜万金川许开富李随波刘晓光吴建光张守仁张兵陆小霞
Owner XIAN AEROSPACE PROPULSION INST