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A multi-functional liquid supply system for the test device of combustible ice preparation and mining

A multi-functional, liquid supply technology, applied in the direction of control/regulation system, pipeline system, and simultaneous control of multiple variables, etc., can solve problems such as difficulty in reflecting the accumulation environment, limitations in mining plan design, etc., and achieve flexible temperature adjustment of the solution , high security, fast response effect

Active Publication Date: 2019-07-16
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the experimental equipment for the preparation and mining of combustible ice is difficult to reflect the actual accumulation environment and the design of the mining plan has limitations

Method used

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  • A multi-functional liquid supply system for the test device of combustible ice preparation and mining
  • A multi-functional liquid supply system for the test device of combustible ice preparation and mining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: The preparation method of combustible ice with liquid injection first and then gas injection is an experimental scheme for direct liquid injection

[0024] In the preparation process of combustible ice, if the preparation method of injecting liquid first and then injecting gas is adopted, the experimental scheme of direct liquid injection can be adopted. The specific implementation plan is as follows: Before the liquid supply of the combustible ice preparation experiment starts, the V1 -V9 shut-off valves are all closed. After starting the liquid supply experiment, open the shut-off valve (V1 or V2) at the back end of the water tank (C1) or NaCl solution tank (C2) according to the predetermined solution, and start to infuse the liquid into the liquid injection pump (1). After being filled with solution, open the shut-off valve (V8) and the shut-off valve (V9) of the rear-end main pipe, and send an opening instruction to the pneumatic regulating valve (5) on t...

Embodiment 2

[0025] Example 2: The embodiment of steady-pressure liquid injection under the preparation method of combustible ice gas injection first and liquid injection later

[0026] During the preparation of combustible ice, if the preparation method of injecting gas first and then injecting liquid is adopted, the experimental scheme of steady-pressure liquid injection can be adopted. The specific implementation plan is as follows: Before the liquid supply of the combustible ice preparation experiment starts, V1-V9 cut-off valves are all closed. After starting the liquid supply experiment, open the cut-off valve (V1 or V2) at the rear end of the water tank (C1) or NaCl solution tank (C2) according to the predetermined solution, and start to infuse the infusion pump (1). After the liquid injection pump (1) is filled with solution, open the cut-off valve (V6), start the liquid injection pump to start supplying liquid, and the solution enters the initial stage of the pressure-stabilized i...

Embodiment 3

[0027] Example 3: The implementation scheme of steady-pressure heating and liquid injection in combustible ice-injection mining mode

[0028] In the combustible ice injection thermal mining experiment, the implementation scheme of steady-pressure heating liquid injection can be adopted, and the specific implementation scheme is as follows: the operation process of stable-pressure gas supply and flow adjustment operation process in this implementation scheme are the same as those in Example 2, please refer to Example 2. Subsequently, when the measured flow accumulation value reaches the required amount of the experiment, the closing command is sent to the pneumatic regulating valve (5). When the solution passes through the temperature sensor (8), the data acquisition instrument (10) acquires the temperature signal of the temperature sensor (8), transmits the signal to the industrial computer (11) and displays it. The PLC in the industrial computer (11) transmits the heating po...

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Abstract

The invention belongs to the technical field of combustible ice exploitation and utilization, and particularly relates to a multifunctional solution supply system for a combustible ice making and exploitation testing device. The multifunctional solution supply system consists of a multifunctional solution preparation unit, a solution charging pump, a surge tank, a pneumatic control valve, a flowmeter, a coiled pipe heating section, a temperature sensor, a combustible ice reaction kettle, a data acquisition instrument, an industrial personnel computer and a mating pipeline valve. The pneumatic control valve and the flowmeter are matched for controlling a flow rate, and no electric spark is generated during operation, so that the safety is higher; and a pneumatic actuator is relatively gentle and has no return stroke, so that stable control is facilitated. The heating section is of a coiled pipe structure, so that a heating area is ensured, and the layout of the multifunctional solution supply system is more compact; and an electric heating mode is matched with a temperature control device, so that a solution temperature is flexible to adjust and rapid in response, and the solution temperature required by an experiment is reached rapidly. The designed multifunctional solution supply system can meet a practical reservoir-forming condition of combustible ice and can meet the function requirement on mining scheme diversity.

Description

technical field [0001] The invention belongs to the technical field of mining and utilization of combustible ice, and in particular relates to a multifunctional liquid supply system for a test device for preparing and mining combustible ice. Background technique [0002] In recent years, with global warming, energy and environmental issues have become an important issue of concern, especially today with the rapid increase in energy demand and increasing air pollution. Combustible ice is an ice-like crystalline hydrate formed by the hydration of methane gas molecules and guest molecules. The natural environment for the formation of combustible ice is in the seabed sediments or permafrost at the continental margin under high pressure and low temperature conditions. The reserves of combustible ice are huge, and on a global scale, its total carbon content is more than twice the sum of the carbon content of other fossil energy sources. The energy density of combustible ice is h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D1/08F17D3/01G05D27/02
CPCF17D1/08F17D3/01G05D27/02
Inventor 杨龙滨邵亚洲韩怀志李彦军宋福元李思广李帅王坤芳车春文崔运磊胡怡然
Owner HARBIN ENG UNIV