CN-121977919-A - Reaction kettle device and system for researching rock core of underground salt cavern gas storage

CN121977919ACN 121977919 ACN121977919 ACN 121977919ACN-121977919-A

Abstract

The application relates to a reaction kettle device and a system for researching a core of an underground salt cavern gas storage, comprising a reaction cavity, a core clamping cylinder, a piston connecting pipe, a turbine flowmeter I, a turbine flowmeter II, a connecting pipe I, a connecting pipe II, a core clamping cylinder II and a core returning rate or adsorption quantity, wherein a heating part is arranged on the outer side of the reaction cavity, a top cover is arranged on the top of the reaction cavity, the core clamping cylinder is connected with the top cover and is arranged in the reaction cavity in a lifting mode, the annular air bag is arranged in the core clamping cylinder in a lifting mode, the annular air bag is used for pressing the core and sealing the periphery of the core, the piston connecting pipe is fixedly connected to the bottom of the core clamping cylinder, the turbine flowmeter I is arranged in the middle of a fluid filling port on one side of the connecting cavity, high-pressure gas is sent into the connecting pipe I through the fluid filling port and the connecting cavity, then enters the core clamping cylinder, the gas is discharged from the exhaust port II after passing through the core, and the pressure loss generated when the fluid passes through a core sample at high temperature and high pressure can be monitored through the two turbine flowmeters, so that the core returning rate or adsorption quantity of the core can be calculated, and the absorption and the returning characteristic of the fluid can be known in depth.

Inventors

CHEN LU
ZHOU MIAO
TIAN ZE
ZHANG CHENGZONG
CHEN XUGUANG
YU LEI
ZHANG MING
XU WANBING
YE HUIRONG
LI YANGHAI
WANG NAN
XIONG CHUNHUI
FU QIANPING
HUANG HUI

Assignees

湖北楚韵储能科技有限责任公司
湖北方源东力电力科学研究有限公司
国网湖北省电力有限公司电力科学研究院

Dates

Publication Date: 20260505
Application Date: 20260117

Claims (10)

1. A reation kettle device for research of underground salt cave gas storage rock core, its characterized in that: The device comprises a reaction cavity (1) with a heating part arranged on the outer side, wherein a top cover (4) is arranged at the top of the reaction cavity (1); the core clamping cylinder (9) is connected with the top cover (4) and is arranged in the reaction cavity (1) in a lifting manner, an annular air bag (25) for pressing and sealing the periphery of a core is arranged in the core clamping cylinder (9), a piston connecting pipe (12) is fixedly connected to the bottom of the core clamping cylinder (9), a first connecting insertion pipe (22) capable of being inserted into the piston connecting pipe (12) is arranged at the bottom of the reaction cavity (1), and flow meters are arranged on the outer sides of the first connecting insertion pipe (22) and the core clamping cylinder (9); the top cover (18) of the core clamping cylinder (9) is detachably arranged, and a pressure sensor (27) and a pressurizing plate (17) are arranged above the cover (18) in a lifting manner and used for fixing and pressurizing the core.
2. The reaction kettle device for researching the rock core of the underground salt cavern gas storage, as set forth in claim 1, wherein the heating part comprises an outer side heating cavity (2) wrapped and installed in the reaction cavity (1), a liquid inlet (3) is installed on one side of the bottom of the heating cavity (2), and a liquid outlet (7) is installed on one side of the top of the heating cavity (2).
3. The reaction kettle device for researching the rock core of the underground salt cavern gas storage according to claim 1, wherein a limiting rod (8) is fixedly connected inside the reaction cavity (1), a rock core clamping cylinder (9) is slidably connected with the limiting rod (8), a pulling rod (13) is fixedly connected to the top of the rock core clamping cylinder (9), the pulling rod (13) is fixedly connected with a top cover (4), and a cylinder cover (18) is slidably connected with the pulling rod (13).
4. The reaction kettle device for researching the rock core of the underground salt cavern gas storage according to claim 3, wherein the support plate (14) is fixedly connected to the outer side of the pulling rod (13), the temperature and humidity sensor (16) is fixedly connected to the top of the support plate (14), the support plate (14) is slidably connected with the limiting rod (8), the extrusion equipment (15) is fixedly connected to the top of the support plate (14), the pressure sensor (27) is fixedly connected to the output end of the extrusion equipment (15), the bottom of the pressure sensor (27) is fixedly connected with the pressurizing plate (17), and the pressurizing plate (17) is slidably connected with the limiting rod (8).
5. The reaction kettle device for researching the underground salt cavern gas storage core according to claim 1, wherein one side of the top cover (4) is fixedly connected with a first air inlet (5), the bottom of the first air inlet (5) is inserted into the reaction cavity (1), and one side of the reaction cavity (1) is fixedly connected with a first air outlet (6).
6. The reaction kettle device for researching the rock core of the underground salt cavern gas storage is characterized in that the flowmeter comprises a first turbine flowmeter (21) and a second turbine flowmeter (11), a connecting cavity (19) is fixedly connected to the bottom of the heating cavity (2), a fluid filling port (20) is fixedly connected to one side of the connecting cavity (19), and the first turbine flowmeter (21) is installed in the middle of the fluid filling port (20).
7. The reaction kettle device for researching the underground salt cavern gas storage core according to claim 6, wherein a supporting disc (29) is fixedly connected to the inside of the core clamping cylinder (9), an electric heating wire (26) is fixedly connected to the inside of the core clamping cylinder (9) and positioned at the bottom of the supporting disc (29), an exhaust port II (10) is fixedly connected to one side of the top of the core clamping cylinder (9), and a turbine flowmeter II (11) is installed in the middle of the exhaust port II (10).
8. The reaction kettle device for researching the underground salt cavern gas storage core according to claim 7, wherein a pressurizing pipe (24) connected with an annular air bag (25) is fixedly connected to the outer side of the core clamping cylinder (9), a first connecting insertion pipe (22) matched with a piston connecting pipe (12) is fixedly connected to the top of the connecting cavity (19), a second connecting insertion pipe (23) matched with the pressurizing pipe (24) is fixedly connected to one side of the connecting cavity (19), and an inflation inlet (28) is fixedly connected to one side of the bottom of the second connecting insertion pipe (23).
9. A system for researching a core of an underground salt cavern gas storage, which is characterized by comprising the reaction kettle device for researching the core of the underground salt cavern gas storage, and further comprising a detection system for detecting a core sample taken out of the reaction kettle.
10. The system for researching the rock core of the underground salt cavern gas storage is characterized by further comprising a high-pressure constant-flow pump, a circulating water tank with an electric heating plate, a water pump, a data acquisition module, a controller and a processing module, wherein the output end of the high-pressure constant-flow pump is connected with a fluid filling port (20) and is used for filling fluid into a rock core clamping cylinder (9), one end of the circulating water tank is connected with a liquid outlet (7), the water pump is arranged on one side of the bottom of the circulating water tank, the output end of the water pump is connected with a liquid inlet (3) and is used for heating hot water in a heating cavity (2) in a circulating mode, and the data acquisition module, the controller and the processing module are electrically connected and are used for acquiring and analyzing pressure and temperature changes.

Description

Reaction kettle device and system for researching rock core of underground salt cavern gas storage Technical Field The invention relates to the technical field of reaction kettle devices, in particular to a reaction kettle device and a system for researching a rock core of an underground salt cavern gas storage. Background In the construction and operation process of the underground salt cavern gas storage, the deep research on the core characteristics is a key link for ensuring the safe and efficient operation of the gas storage. The underground salt cavern gas storage is used as an important energy storage mode, has the advantages of large storage capacity, safety, reliability, economy, environmental protection and the like, and plays an irreplaceable role in the fields of natural gas storage and the like. However, the geological environment where the salt cavern gas storage is located is complex, and the core is used as the core part of the salt cavern surrounding rock, so that the physical property, the mechanical property, the interaction with gas and the like of the core can have great influence on the long-term stability and the safety of the gas storage. Currently, research on underground salt cavern gas reservoir cores faces many challenges. When the flow resistance of the gas in the rock core is measured, the flow characteristic of the gas in the salt cavern rock core directly influences the gas injection and gas production efficiency of the gas storage, and accurate measurement of the flow resistance is important for evaluating the operation performance of the gas storage. However, in the measurement process, the current experimental device often cannot effectively control experimental conditions such as temperature, pressure and the like, has limited measurement accuracy, and is difficult to obtain accurate and reliable flow resistance data. In addition, the monitoring means of the flowing state of the gas in the core is single, the distribution and migration conditions of the gas in the core cannot be intuitively observed, and the interaction mechanism between the gas and the core is not easy to deeply analyze. Moreover, the existing experimental device is single in function and is difficult to meet diversified experimental requirements. In an underground salt cavern gas storage, long-term contact of gas and a rock core may occur a series of complex chemical reactions, such as dissolution and precipitation of salt rock, and actions of the gas and impurities in the rock core. These reactions not only change the physical and mechanical properties of the core, but may also affect the gas tightness and stability of the gas reservoir. However, most of the current experimental devices can only perform simple gas injection and pressure monitoring, cannot realize real-time and visual monitoring of the chemical reaction process, and also cannot accurately control the reaction conditions such as temperature, gas components and the like, so that the deep research on the chemical reaction of the gas and the rock core is limited. Disclosure of Invention The embodiment of the application aims to provide a reaction kettle device and a system for researching a rock core of an underground salt cavern gas storage, which are used for solving the problems that most of the existing experimental devices only can carry out simple gas injection and pressure monitoring, cannot realize real-time and visual monitoring on a chemical reaction process, and are difficult to accurately control reaction conditions such as temperature, gas components and the like. In order to achieve the above purpose, the present application provides the following technical solutions: In a first aspect, an embodiment of the present application provides a reaction kettle device for researching a core of an underground salt cavern gas storage, including a reaction cavity with a heating part arranged at the outer side, wherein a top cover is installed at the top of the reaction cavity; The core clamping cylinder is connected with the top cover and is arranged in the reaction cavity in a lifting manner, an annular air bag used for pressing and sealing the periphery of the core is arranged in the core clamping cylinder, a piston connecting pipe is fixedly connected to the bottom of the core clamping cylinder, a first connecting insertion pipe capable of being inserted into the piston connecting pipe is arranged at the bottom of the reaction cavity, and a flowmeter is arranged at the outer sides of the first connecting insertion pipe and the core clamping cylinder; The top cover of the core clamping cylinder is detachably arranged, and a pressure sensor and a pressurizing plate are arranged above the cover in a lifting manner and used for fixing and pressurizing the core. The heating portion is including wrapping up the outside heating chamber of installing at the reaction chamber, the inlet is installed to one side of heating chamber bottom, the li