WO2019214013A1 - 水合物动力学实验系统 - Google Patents

水合物动力学实验系统 Download PDF

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Publication number
WO2019214013A1
WO2019214013A1 PCT/CN2018/091742 CN2018091742W WO2019214013A1 WO 2019214013 A1 WO2019214013 A1 WO 2019214013A1 CN 2018091742 W CN2018091742 W CN 2018091742W WO 2019214013 A1 WO2019214013 A1 WO 2019214013A1
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stirring paddle
visible
valve
pressure
pid
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PCT/CN2018/091742
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English (en)
French (fr)
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韩青雲
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江苏宏博机械制造有限公司
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
    • G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases

Definitions

  • the invention relates to an experimental device, in particular to an experimental system for performing kinetic experiments on hydrates in an oil exploitation process.
  • Gas hydrates are composed of different gases as carrier molecules filled into a cage space formed by main water molecules to form an ice crystal compound at a specific temperature and pressure. Commonly known as combustible ice. He is a rich source of energy.
  • thermodynamics of gas hydrates It is urgent to study the thermodynamics of gas hydrates to obtain a more scientific marine natural gas exploitation plan. Therefore, it is necessary to provide an experimental system for thermodynamics and kinetics research of gases.
  • the invention overcomes the deficiencies of the background art and provides a hydrate kinetics experimental system.
  • the patent can perform thermodynamics and kinetic experiments on hydrates, and conduct related research according to experimental data to obtain an optimal natural gas exploitation plan.
  • a hydrate kinetics experimental system characterized in that the hydrate kinetics experimental system comprises a visible stirring paddle reaction vessel 1, a constant temperature water bath tank 2, a high pressure gas cylinder 3, a comparison container 4
  • the visible stirring paddle reaction vessel 1 is placed in the constant temperature water bath tank 2, and the visible stirring paddle reactor 1 is provided with a temperature sensor 5 and a pressure transmitter 6, and the visual stirring paddle reactor 1
  • An inlet pipe 7 communicating with the inner chamber thereof is disposed, the high pressure gas cylinder 3 is in communication with the inner cavity of the visible stirring paddle reaction vessel 1, and the comparison container 4 is in communication with the high pressure gas cylinder 3, the comparison container 4 is connected to the reaction kettle 1 through the PID valve 8, and the PID valve 8, the electromagnetic valve 9, the low pressure pressure regulating valve 10, and the low pressure intake valve are connected in series and then connected to the air compressor.
  • the gas outlet of the high pressure gas cylinder 3 is provided with a cylinder pressure regulating valve 11.
  • the invention has the beneficial effects that the device performs PID control adjustment through the pressure transmitter 6, the PID valve 8, and the computer, so that the pressure in the visual stirring paddle reactor 1 is constant, and the temperature is kept constant by the constant temperature water bath.
  • This patent can conduct thermodynamic and kinetic experiments on hydrates to conduct research based on experimental data to obtain the best natural gas extraction plan.
  • Figure 1 is a schematic view showing the structure of the hydrate kinetics experimental system of the present invention.
  • Fig. 1 visible stirring paddle reactor 1, constant temperature water bath 2, high pressure gas cylinder 3, comparison container 4, temperature sensor 5, pressure transmitter 6, inlet pipe 7, PID valve 8, solenoid valve 9, low pressure
  • the hydrate kinetics experimental system comprises a visible stirring paddle reaction vessel 1, a constant temperature water bath tank 2, a high pressure gas cylinder 3, a comparison vessel 4, and the visible stirring paddle reactor 1 is placed in the chamber
  • the visible stirring paddle reaction tank 1 is provided with a temperature sensor 5 and a pressure transmitter 6, and the visible stirring paddle reaction vessel 1 is provided with a liquid inlet pipe 7 communicating with the inner cavity thereof.
  • the high pressure gas cylinder 3 is in communication with the inner chamber of the visual stirring paddle reaction vessel 1
  • the comparison container 4 is in communication with the high pressure gas cylinder 3
  • the comparison container 4 is also provided with a pressure transmitter, the pressure transmitter and The pressure transmitter of the reaction kettle is sent to the computer for PID closed loop adjustment.
  • the comparison container 4 is in communication with the reaction kettle 1 through a PID valve 8.
  • the PID valve 8, the solenoid valve 9, the low pressure regulator valve 10, and the low pressure intake valve are connected in series and then connected to the air compressor.
  • the gas outlet of the high pressure gas cylinder 3 is provided with a cylinder pressure regulating valve 11.
  • the visible stirring paddle reactor 1 is a high pressure reaction kettle, and the visible stirring paddle reactor 1 is a core component of the experimental system, injecting a certain amount of water through the inlet pipe 7 and injecting gas through the inlet pipe 12 to reach a certain level. After the pressure, it is adjusted to a suitable temperature by a water bath, and the temperature is -10 to 30 ° C to form a hydrate. The experimental process can also choose whether to stir, increase the gas-liquid contact area and the reaction speed.
  • the wall of the visible stirring paddle reactor is provided with a window, which can observe the formation of hydrate from the outside, and analyze the temperature and pressure parameters of the hydrate formation by the temperature sensor and the pressure transmitter.
  • PID valve 8 The most widely used regulator control law is proportional, integral, differential control, referred to as PID control, also known as PID adjustment.
  • PID controller As the earliest practical controller, PID controller has been used for nearly 100 years and is still the most widely used industrial controller. The PID controller is simple and easy to understand, and requires no preconditions such as accurate system models in use, making it the most widely used controller.
  • the PID controller is composed of a proportional unit P, an integral unit I and a differential unit D, and the PID adjustment of the valve is one of the industrial control PID adjustment.
  • the PID controller is a common feedback loop component in industrial control applications and consists of a proportional unit P, an integral unit I and a differential unit D.
  • PID control is proportional control; integral control can eliminate steady-state error, but may increase overshoot; differential control can speed up the response of large inertia system and weaken overshoot.
  • the PID valve is connected with the comparison container 4 and the visible stirring paddle reactor 1.
  • the PID valve is connected to the computer, and the visible stirring paddle reactor 1 and the comparative volume are closed-loop controlled, and the steady-state error is eliminated by the PID to achieve precise control.
  • the pressure of the PID pressure control module can be reduced, and the pressure in the stirring paddle reactor 1 can be reduced.
  • the gas is replenished from the comparison container to the visible stirring paddle reactor 1 until the pressure in the visual stirring paddle reactor 1 is reached.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Algebra (AREA)
  • Pure & Applied Mathematics (AREA)
  • Educational Administration (AREA)
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  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

一种水合物动力学实验系统，包括可视搅拌桨反应釜（1）、恒温水浴箱（2）、高压气瓶（3）、比较容器（4），可视搅拌桨反应釜（1）置于恒温水浴箱（2）内，有益效果：该实验系统能针对水合物进行热力学、动力学实验，以根据实验数据进行相关研究，获得最佳的天然气开采方案。

Description

水合物动力学实验系统 技术领域
本发明涉及一种实验装置，具体涉及一种在石油开采过程中对水合物进行动力学实验的实验系统。
背景技术
气体水合物是由不同的气体作为载体分子填充到主体水分子形成的笼形空间中，在特定的温度压力下组成冰晶状的化合物。俗称可燃冰。他是一种蕴藏丰富的能源。
针对气体水合物的热力学动力学进行研究，从而获得较为科学的海洋天然气开采方案迫在眉睫，因此需要提供一种针对气体进行热力学、动力学研究的实验系统。
发明内容
本发明克服背景技术的不足提供了水合物动力学实验系统，本专利能针对水合物进行热力学、动力学实验，以根据实验数据进行相关研究，获得最佳的天然气开采方案。
本发明提供了下述技术方案：水合物动力学实验系统，其特征在于，所述水合物动力学实验系统包括可视搅拌桨反应釜1、恒温水浴箱2、高压气瓶3、比较容器4，所述可视搅拌桨反应釜1置于所述恒温水浴箱2内，所述可视搅拌桨反应釜1设有温度传感器5、压力变送器6，所述可视搅拌桨反应釜1设有与其内腔连通的进液管7，所述高压气瓶3与所述可视搅拌桨反应釜1内腔连通，所述比较容器4与所述高压气瓶3连通，所述比较容器4通过PID阀8与所述反应釜1连通，所述PID阀8、电磁阀9、低压调压阀10、低压进气阀依次串联后接入空压机。
所述高压气瓶3的出气口设有气瓶调压阀11。
本发明的有益效果：本装置通过压力变送器6、PID阀8、计算机进行PID控制调节，使得可视搅拌桨反应釜1中的压力恒定，通过恒温水浴箱保温使得温度恒定。本专利能针对水合物进行热力学、动力学实验，以根据实验数 据进行相关研究，获得最佳的天然气开采方案。
附图说明
图1是本发明所述水合物动力学实验系统的结构示意图。
具体实施方式
以下结合附图与具体实施例对本发明作进一步描述。
图1中：可视搅拌桨反应釜1、恒温水浴箱2、高压气瓶3、比较容器4、温度传感器5、压力变送器6、进液管7、PID阀8、电磁阀9、低压调压阀10、气瓶调压阀11、进气管12。
水合物动力学实验系统，所述水合物动力学实验系统包括可视搅拌桨反应釜1、恒温水浴箱2、高压气瓶3、比较容器4，所述可视搅拌桨反应釜1置于所述恒温水浴箱2内，所述可视搅拌桨反应釜1设有温度传感器5、压力变送器6，所述可视搅拌桨反应釜1设有与其内腔连通的进液管7，所述高压气瓶3与所述可视搅拌桨反应釜1内腔连通，所述比较容器4与所述高压气瓶3连通，比较容器4也设有压力变送器，该压力变送器和反应釜的压力变送器均传入计算机，进行PID闭环调节。所述比较容器4通过PID阀8与所述反应釜1连通，所述PID阀8、电磁阀9、低压调压阀10、低压进气阀依次串联后接入空压机。所述高压气瓶3的出气口设有气瓶调压阀11。
可视搅拌桨反应釜1为高压反应釜，该可视搅拌桨反应釜1为本实验系统的核心元件，在通过进液管7注入一定量的水和通过进气管12注入气体并达到一定的压力之后，经过水浴调节到合适的温度，该温度为-10～30℃，即可生成水合物。实验的过程还可以选择是否进行搅拌，增加气液接触面积和反应速度。可视搅拌桨反应釜的壁部设有可视窗，可以从外部观察水合物的生成状况，同时通过温度传感器和压力变送器分析水合物生成时温度、压力参数。PID阀8的概念：应用最为广泛的调节器控制规律为比例、积分、微分控制，简称PID控制，又称PID调节。PID控制器作为最早实用化的控制器已有近百年历史，现在仍然是应用最广泛的工业控制器。PID控制器简单易懂，使用中不需精确的系统模型等先决条件，因而成为应用最为广泛的控制器。PID控制器由比例单元P、积分单元I和微分单元D组成，阀门的PID调节是工控PID调节的一种。PID控制器是一个在工业控制应用中常见的反馈回路部件，由比例单元 P、积分单元I和微分单元D组成。PID控制的基础是比例控制；积分控制可消除稳态误差，但可能增加超调；微分控制可加快大惯性系统响应速度以及减弱超调趋势。本PID阀与比较容器4、可视搅拌桨反应釜1均连通，PID阀接入计算机，将可视搅拌桨反应釜1与比较容积进行闭环控制，通过PID消除稳态误差，达到精确控制。PID压力控制模块在实验时，可视搅拌桨反应釜1中的压力降低，通过比较闭环控制由比较容器向可视搅拌桨反应釜1中补充气体，直到可视搅拌桨反应釜1中的压力达到设置压力，可视搅拌桨反应釜1中的压力过高，通过反馈信号，使得可视搅拌桨反应釜1中向压力容器中释放气体使得压力降低。从而达到设置压力，通过这样的设置使得釜体内的压力保持恒定。

Claims (2)

  1. 水合物动力学实验系统，其特征在于，所述水合物动力学实验系统包括可视搅拌桨反应釜(1)、恒温水浴箱(2)、高压气瓶(3)、比较容器(4)，所述可视搅拌桨反应釜(1)置于所述恒温水浴箱(2)内，所述可视搅拌桨反应釜(1)设有温度传感器(5)、压力变送器(6)，所述可视搅拌桨反应釜(1)设有与其内腔连通的进液管(7)，所述高压气瓶(3)与所述可视搅拌桨反应釜(1)内腔连通，所述比较容器(4)与所述高压气瓶(3)连通，所述比较容器(4)通过PID阀(8)与所述反应釜(1)连通，所述PID阀(8)、电磁阀(9)、低压调压阀(10)、低压进气阀依次串联后接入空压机。
  2. 根据权利要求1所述水合物动力学实验系统，其特征在于，所述高压气瓶(3)的出气口设有气瓶调压阀(11)。
PCT/CN2018/091742 2018-05-07 2018-06-18 水合物动力学实验系统 WO2019214013A1 (zh)

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