Fully visual flow loop system for studying hydrate blockage

Patent metadata

Field	Value
Publication number	US-11199502-B2
Application number	US-201816195134-A
Country	US
Kind code	B2
Filing date	Nov 19, 2018
Priority date	Sep 21, 2018
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

The present invention discloses a fully visual flow loop system for studying hydrate blockage. The fully visual flow loop system includes a first pipeline, a second pipeline, a third pipeline and a fourth pipeline connected successively in an end-to-end way; a single screw pump is connected between the first pipeline and the fourth pipeline from the four pipelines; the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all transparent to light; a plurality of CCD cameras are arranged between the first pipeline, the second pipeline, the third pipeline and the fourth pipeline; and, the fully visual flow loop system is arranged in a stepping low-temperature thermostatic chamber; a solution injection system can inject a solution into the fully visual flow loop system; a separation and collection system can separate and recover the solution; and a data acquisition system can integrate sensor information in all the other systems and give real-time feedback to ensure reasonable and coordinated operation of all systems. The fully visual flow loop system for studying hydrate blockage in the present invention can realize full visualization and real-time monitoring of the flow loop system.

First claim

What is claimed is:

1. A fully visual flow loop system for studying hydrate blockage, comprising a fully visual pipeline system, a solution injection system, a separation and collection system and a data acquisition system; wherein
the fully visual pipeline system comprises a single screw pump and a first pipeline, a second pipeline, a third pipeline and a fourth pipeline connected successively in an end-to-end way, wherein the single screw pump is connected between the first pipeline and the fourth pipeline from the four pipelines, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are transparent to light, a plurality of CCD cameras are arranged among the first pipeline, the second pipeline, the third pipeline and the fourth pipeline, the fully visual pipeline system is arranged in a stepping low-temperature thermostatic chamber, and a heat exchanger is arranged at one side of the stepping low-temperature thermostatic chamber;
the solution injection system comprises a first solution tank and a second solution tank, wherein the first solution tank communicates with the single screw pump through a first solution conveying pipe, the second solution tank communicates with the single screw pump through a second solution conveying pipe, reciprocating pumps are arranged on the first solution tank and the second solution tank respectively, and a liquid flowmeter is also arranged on the first solution conveying pipe;
the separation and collection system comprises a natural gas collection tank connected with the fully visual pipeline system, wherein a gas-liquid separator and a burner are connected to an outlet of the natural gas collection tank;
the data acquisition system comprises pressure sensors arranged on the first solution conveying pipe, the second solution conveying pipe, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline, temperature sensors arranged on the first pipeline, the second pipeline, the third pipeline and the fourth pipeline, a plurality of CCD cameras arranged between the first pipeline, the second pipeline, the third pipeline and the fourth pipeline, and a computer electrically connected with the CCD cameras, the pressure sensors and the temperature sensors respectively.

2. The fully visual flow loop system for studying hydrate blockage according to claim 1 , wherein the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are arranged horizontally and successively in parallel; the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are connected successively through stainless steel bent pipes, the first pipeline also communicates with an inlet of the single screw pump through a first injection pipeline, the fourth pipeline also communicates with an outlet of the single screw pump through a second injection pipeline, a mass flowmeter is connected to the outlet of the single screw pump, the first injection pipeline is connected with the second injection pipeline through a connecting pipe, and a differential pressure sensor and a first pneumatic valve are arranged on the connecting pipe; the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all formed by connecting a plurality of organic glass straight pipes; the stainless steel bent pipes and the organic glass straight pipes are all made of high-transparency materials; and an acoustic wave monitor, a gate valve and a ball valve are arranged on the first pipeline.

3. The fully visual flow loop system for studying hydrate blockage according to claim 2 , wherein one end of each visual pipe stretches into sealing flanges A, and support rings, check rings, O-rings A and distance rings are installed between the visual pipes and the sealing flanges A in order from inside to outside; flange plates of the sealing flanges A are fixed and abutted through bolts, a sealing gasket is placed between the flange plates of the sealing flanges, a distance bush is placed between the visual pipes respectively stretching into the sealing flanges A, and washers A are installed between the distance bush and the visual pipes; and sensors are placed in sensor interfaces arranged on the sealing flanges A, and the pipeline is entirely fixed on the support through U-shaped clamp slot.

4. The fully visual flow loop system for studying hydrate blockage according to claim 2 , wherein the second pipeline and the third pipeline are both laid on a movable base, wherein one end of the movable base is rotatably connected to the ground, and the other end of the movable base can be lifted up through a chain block.

5. The fully visual flow loop system for studying hydrate blockage according to claim 2 , wherein the solution injection system further comprises a vacuum pump connected to the first injection pipeline, wherein a valve and a pressure sensor electrically connected with the computer are arranged on the pipeline between the vacuum pump and the first injection pipeline.

6. The fully visual flow loop system for studying hydrate blockage according to claim 2 , wherein a back pressure control system is arranged between the natural gas collection tank and the fully visual pipeline, wherein the back pressure control system comprises a back pressure regulating valve and a hand shutoff valve arranged between the natural gas collection tank and the fully visual pipeline as well as a pressure sensor connected with the computer.

7. The fully visual flow loop system for studying hydrate blockage according to claim 2 , further comprising a pressure stabilizing and gas injection system, the pressure stabilizing and gas injection system comprises a buffering and pressure stabilizing tank, a first gas booster pump and an experimental gas cylinder group successively communicating with each other, the buffering and pressure stabilizing tank communicates with the second injection pipeline, a check valve, a gas flowmeter, a gas filter and a second pneumatic valve are arranged on the pipeline between the buffering and pressure stabilizing tank and the second injection pipeline, and the gas flowmeter and the second pneumatic valve is connected with the gas filter in parallel; and the gas-liquid separator communicates with one end of a second gas booster pump, and the other end of the gas booster pump communicates with the natural gas collection tank.

8. The fully visual flow loop system for studying hydrate blockage according to claim 2 , wherein a deadleg is arranged on the fourth pipeline.

9. The fully visual flow loop system for studying hydrate blockage according to claim 2 , wherein visual windows are arranged in all of the stainless steel bent pipes, and a drain valve is arranged on one of the stainless steel bent pipes.

10. The fully visual flow loop system for studying hydrate blockage according to claim 3 , wherein the solution injection system further comprises a vacuum pump connected to the first injection pipeline, wherein a valve and a pressure sensor electrically connected with the computer are arranged on the pipeline between the vacuum pump and the first injection pipeline.

11. The fully visual flow loop system for studying hydrate blockage according to claim 3 , wherein a back pressure control system is arranged between the natural gas collection tank and the fully visual pipeline, wherein the back pressure control system comprises a back pressure regulating valve and a hand shutoff valve arranged between the natural gas collection tank and the fully visual pipeline as well as a pressure sensor connected with the computer.

12. The fully visual flow loop system for studying hydrate blockage according to claim 3 , furthe

Assignees

• Univ Dalian Tech

Inventors

• Song Yongchen
• Zhao Jiafei
• Liu Zheyuan
• Liu Weiguo
• Liu Yu
• Liang Huiyong
• Chu Jiawei
• Yang Mingjun
• Li Yanghui

Classifications

• F17D1/02 Primary

  for gases or vapours · CPC title

• G01N21/85 Primary

  Investigating moving fluids or granular solids · CPC title

• G01N33/225

  Gaseous fuels, e.g. natural gas · CPC title

• G01N21/75

  Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated (systems in which material is burnt in a flame or plasma G01N21/72, G01N21/73) · CPC title

• G01M99/00

  Subject matter not provided for in other groups of this subclass · CPC title