CN110927203B - Long coal petrography sample gas-liquid temperature rise adsorption expansion test chamber - Google Patents
Long coal petrography sample gas-liquid temperature rise adsorption expansion test chamber Download PDFInfo
- Publication number
- CN110927203B CN110927203B CN201911359169.5A CN201911359169A CN110927203B CN 110927203 B CN110927203 B CN 110927203B CN 201911359169 A CN201911359169 A CN 201911359169A CN 110927203 B CN110927203 B CN 110927203B
- Authority
- CN
- China
- Prior art keywords
- long
- rock sample
- coal rock
- steel cylinder
- strain force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a long coal rock sample gas-liquid temperature rise adsorption expansion test chamber which comprises a long steel cylinder, an air inlet end connection air seal head and an air outlet end seal head, wherein a long coal rock sample cavity in a long strip shape is surrounded by the long steel cylinder, a heating insulation sleeve is wrapped outside the long steel cylinder and is formed by splicing a plurality of sections, each section can be independently heated, a plurality of temperature sensors arranged in a line and a plurality of radial strain force sensors arranged in a line are arranged on the side wall of the long steel cylinder along the length direction, the interface of two adjacent sections of the heating insulation sleeve is positioned between the two radial strain force sensors, holes for the radial strain force sensors to pass through are formed in the heating insulation sleeve, and the axial strain force sensors are installed on the air outlet end seal head. The gas-liquid temperature rise adsorption expansion condition can be simulated more truly, and the mutual influence in the temperature rise adsorption expansion process of the coal rock samples in different stratums can be reflected more truly.
Description
Technical Field
The invention belongs to the technical field of coal and rock sample test equipment, and particularly relates to a test chamber structure for a gas-liquid temperature rise adsorption expansion simulation test on a long coal and rock sample.
Background
In different stratums, the gas-liquid temperatures in the coal rock sample and the coal rock sample are different. At present, when a coal rock sample gas-liquid temperature rise adsorption expansion test is carried out, multiple tests are carried out aiming at different temperatures, and the test efficiency is low; and because different temperature test experiments are independent, the mutual influence of coal and rock samples in different stratums during temperature rise adsorption expansion cannot be simulated really, and certain limitation exists.
Disclosure of Invention
The invention aims to provide a test chamber special for a coal rock sample gas-liquid temperature rise adsorption expansion test, which can simulate gas-liquid temperature rise adsorption expansion conditions more truly and reflect the mutual influence of coal rock sample temperature rise adsorption expansion processes in different stratums more truly.
Therefore, the technical scheme adopted by the invention is as follows: a long coal rock sample gas-liquid temperature rise adsorption expansion test chamber comprises a long steel cylinder, and an air inlet end connection air seal head and an air outlet end seal head which are arranged in the long steel cylinder, wherein a strip-shaped long coal rock sample cavity is formed by the air inlet end connection air seal head and the air outlet end seal head, the long steel cylinder is wrapped with a heating and heat-insulating sleeve, the heating and heat-insulating sleeve is formed by splicing a plurality of sections, each section can be independently heated, a plurality of temperature sensors arranged in a line and a plurality of radial strain force sensors arranged in a line are arranged on the side wall of the long steel cylinder along the length direction, the temperature sensors and the radial strain force sensors are annularly staggered and arranged in one-to-one correspondence and are respectively used for measuring the temperature and the radial strain force of different sections of the long coal rock sample, the interface of two sections of adjacent heating insulation cover is located between two radial strain force sensors, and the heating insulation cover is provided with a hole for the radial strain force sensors to pass through, and the end sealing head of giving vent to anger is last to be installed axial strain force sensor.
The core innovation of the test chamber comprises: (1) selecting a strip-shaped long coal rock sample cavity for placing a long coal rock sample; (2) the long steel cylinder is wrapped by a heating and heat-insulating sleeve which is formed by segmented splicing, each segment can be independently heated, the long coal rock sample of the long coal rock sample cavity can be heated in a segmented mode, and the long coal rock sample can be heated to different temperatures according to needs; (3) the lateral wall of the long steel cylinder is provided with a plurality of temperature sensors and radial strain force sensors which are arranged in a line along the length direction, the heating temperature and the radial strain force of different sections of the long coal rock sample can be respectively monitored, and the axial strain force sensor is arranged on the air outlet end sealing head and used for monitoring the axial strain force of the long coal rock sample, so that the ground stress of different temperature strata after gas-liquid heating expansion is simulated.
Preferably, two annular high-pressure liquid interfaces which are opposite to the long coal rock sample cavity are arranged on the outer wall of the long steel cylinder.
Preferably, the heating and heat-insulating sleeve is made of silicon rubber, the heating and heat-insulating sleeve is rectangular after being unfolded, two ends of the heating and heat-insulating sleeve are fixed into a ring through magic tapes or adhesive buckles, and two adjacent sections are hooked together to achieve seamless connection.
More preferably, the length of the long coal rock sample cavity is 475 +/-100 mm, and the diameter of the long coal rock sample cavity is phi 76 +/-10 mm.
More preferably, the number of the temperature sensors and the number of the radial strain force sensors are respectively 4-6, and correspondingly, the heating insulation sleeve is divided into 4-6 sections.
Preferably, the air outlet end sealing head comprises a plug and a cap, the plug is arranged in the long steel cylinder in an interference fit manner, the cap is screwed with the long steel cylinder, and the front end of the cap abuts against the rear of the plug; the main body of the axial strain force sensor is arranged on the plug, the sensing end of the axial strain force sensor is inserted into a sliding ring in the long steel cylinder, and the sliding ring and the plug are arranged at intervals. The axial strain force sensor is installed by means of the air outlet end seal head, only a sliding ring needs to be additionally arranged, the sliding ring is used for transmitting the axial strain force, the installation structure is simple, stable and reliable, and the measured value is real and accurate.
The invention has the beneficial effects that: the testing chamber can heat a long coal rock sample to different temperatures in sections at one time, temperature rise expansion strain of different sections is monitored through the radial strain force sensor and the axial strain force sensor respectively, so that different stresses in two directions after gas-liquid temperature rise adsorption expansion are simulated more truly, mutual influence in the coal rock sample temperature rise adsorption expansion process in different stratums is reflected more truly, the testing efficiency is improved remarkably, the testing result has higher practical guiding significance, and reliable guarantee is provided for coal bed safety exploitation.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, the long coal rock sample gas-liquid temperature rise adsorption expansion testing chamber mainly comprises a long steel cylinder 1, an air inlet end connection air seal head 2, an air outlet end seal head 3, a heating insulation sleeve 4, a temperature sensor 5, a radial strain force sensor 6 and an axial strain force sensor 7.
The air inlet end connection end socket 2 and the air outlet end socket 3 are arranged in the long steel cylinder 1, and form a long coal rock sample cavity A in a strip shape in a surrounding mode and are used for placing a long coal rock sample.
The long steel cylinder 1 is wrapped with a heating and heat-insulating sleeve 4. The heating insulation sleeve 4 is formed by splicing a plurality of sections, each section can be independently heated, the long coal rock sample of the long coal rock sample cavity A can be heated in sections, and the long coal rock sample can be heated to different temperatures according to needs. In actual operation, the heating temperature of each section of the long coal rock sample is sequentially increased in an increasing mode so as to simulate the gas-liquid temperature rise adsorption expansion condition more truly and reflect the mutual influence among the sections in the coal rock sample temperature rise adsorption expansion process in different stratums more truly.
A plurality of temperature sensors 5 arranged in a line and a plurality of radial strain force sensors 6 arranged in a line are arranged on the side wall of the long steel cylinder 1 along the length direction. The temperature sensors 5 and the radial strain force sensors 6 are annularly staggered and arranged in a one-to-one correspondence mode and are respectively used for measuring the temperature and the radial strain force of different sections of the long coal rock sample. The temperature sensor 5 monitors the heating temperature of each section of the long coal rock sample at any time, and realizes accurate control.
The interface of two adjacent sections of the heating and heat-insulating sleeve 4 is positioned between the two radial strain force sensors 6, a hole for the radial strain force sensor 6 to pass through is formed in the heating and heat-insulating sleeve 4, and an axial strain force sensor 7 is installed on the air outlet end sealing head 3.
Preferably, two annular high-pressure liquid interfaces a opposite to the long coal rock sample cavity A are arranged on the outer wall of the long steel cylinder 1. The gas-liquid temperature rise adsorption expansion test of the long coal rock sample and the gas-liquid seepage test of the long coal rock sample can be respectively carried out by utilizing the same long steel cylinder 1, when the gas-liquid seepage test of the long coal rock sample is required, the gas inlet end connection gas seal head and the gas outlet end seal head are taken down, the other end connection gas seal head is replaced, and the upper ring pressure pump and the axial pressure pump are installed.
In addition, the heating and heat-insulating sleeve 4 is preferably made of silicon rubber, the heating and heat-insulating sleeve 4 is rectangular after being unfolded, two ends of the heating and heat-insulating sleeve 4 are fixed into a ring through magic tapes or adhesive buckles, and two adjacent sections are hooked together to realize seamless connection, so that the installation is convenient and reliable.
Preferably, the length of the long coal rock sample cavity A is 475 +/-100 mm, and the diameter is phi 76 +/-10 mm. Length of long coal rock sample cavity a: the diameter is more than or equal to 5: 1.
The number of the temperature sensors 5 and the number of the radial strain force sensors 6 are respectively 4-6, and correspondingly, the heating insulation sleeve 4 is divided into 4-6 sections.
The air outlet end sealing head 3 mainly comprises a plug 3a and a cap 3b, the plug 3a is installed in the long steel cylinder 1 in an interference fit mode, the cap 3b is connected with the long steel cylinder 1 in a threaded mode, and the front end of the cap 3b abuts against the rear of the plug 3 a. The main body of the axial strain force sensor 7 is installed on the plug 3a, the sensing end of the axial strain force sensor 7 is inserted into a sliding ring 8 in the long steel cylinder 1, and the sliding ring 8 and the plug 3a are arranged at intervals. The axial force is transmitted to the sensing end of the axial strain force sensor 7 through the slip ring 8.
Claims (5)
1. The utility model provides a long coal petrography appearance gas-liquid temperature rise adsorbs inflation test chamber which characterized in that: including long steel cylinder (1) to and install inlet end connection gas head (2) and the end head (3) of giving vent to anger in long steel cylinder (1), the long coal rock sample chamber (A) of rectangular shape is enclosed to the three, long steel cylinder (1) is wrapped up in outward and is covered with heating insulation cover (4), heating insulation cover (4) are formed by 4-6 sections concatenation, and every section can heat alone separately, be provided with temperature sensor (5) and 4-6 radial strain force sensor (6) that become a word and arrange along length direction on the lateral wall of long steel cylinder (1), temperature sensor (5) and radial strain force sensor (6) the annular stagger and the one-to-one setting of radial strain force sensor (6), be used for measuring the temperature and the radial strain force of the different sections of long coal rock sample respectively, the interface of two sections adjacent of heating insulation cover (4) is located between two radial strain force sensor (6), a hole for the radial strain force sensor (6) to pass through is formed in the heating insulation sleeve (4), and an axial strain force sensor (7) is installed on the air outlet end sealing head (3).
2. The long coal rock sample gas-liquid temperature rise adsorption expansion test chamber according to claim 1, characterized in that: two annular high-pressure liquid interfaces (a) which are opposite to the long coal rock sample cavity (A) are arranged on the outer wall of the long steel cylinder (1).
3. The long coal rock sample gas-liquid temperature rise adsorption expansion test chamber according to claim 1, characterized in that: the heating insulation sleeve (4) is made of silicon rubber, the heating insulation sleeve (4) is rectangular after being unfolded, two ends of the heating insulation sleeve (4) are fixed into a ring through magic tapes or bonding buckles, and adjacent two sections are hooked together to achieve seamless connection.
4. The long coal rock sample gas-liquid temperature rise adsorption expansion test chamber according to claim 1, characterized in that: the length of the long coal rock sample cavity (A) is 475 +/-100 mm, and the diameter of the long coal rock sample cavity (A) is phi 76 +/-10 mm.
5. The long coal rock sample gas-liquid temperature rise adsorption expansion test chamber according to claim 1, characterized in that: the air outlet end sealing head (3) comprises a plug (3a) and a cap (3b), the plug (3a) is installed in the long steel cylinder (1) in an interference fit mode, the cap (3b) is in threaded connection with the long steel cylinder (1), and the front end of the cap (3b) abuts against the rear of the plug (3 a); the main body of the axial strain force sensor (7) is installed on the plug (3a), the sensing end of the axial strain force sensor (7) is inserted into a sliding ring (8) in the long steel cylinder (1), and the sliding ring (8) and the plug (3a) are arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911359169.5A CN110927203B (en) | 2019-12-25 | 2019-12-25 | Long coal petrography sample gas-liquid temperature rise adsorption expansion test chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911359169.5A CN110927203B (en) | 2019-12-25 | 2019-12-25 | Long coal petrography sample gas-liquid temperature rise adsorption expansion test chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110927203A CN110927203A (en) | 2020-03-27 |
| CN110927203B true CN110927203B (en) | 2020-10-27 |
Family
ID=69862020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911359169.5A Active CN110927203B (en) | 2019-12-25 | 2019-12-25 | Long coal petrography sample gas-liquid temperature rise adsorption expansion test chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110927203B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975718A (en) * | 2010-08-13 | 2011-02-16 | 中国科学院山西煤炭化学研究所 | Method for simultaneously measuring high-pressure gas adsorption capacity and adsorption swell capacity of coal petrography and measuring equipment |
| CN104777058A (en) * | 2015-03-24 | 2015-07-15 | 中国矿业大学 | Measurement device and method for free expansion volume of coal rock adsorption |
| CN106198586A (en) * | 2016-07-25 | 2016-12-07 | 中国矿业大学(北京) | A kind of absorption lower small-angle scattering research coal petrography thermal fracture device and method |
| EP3112854A1 (en) * | 2015-07-03 | 2017-01-04 | Netzsch Gerätebau GmbH | Method and device for the thermomechanical analysis of a sample |
| CN109211684A (en) * | 2018-10-10 | 2019-01-15 | 吉林大学 | A kind of mechanical high-temerature creep testing machine of achievable automatic and accurate load |
| CN109470735A (en) * | 2018-12-05 | 2019-03-15 | 中国科学院长春光学精密机械与物理研究所 | Rod piece thermal expansion coefficient measuring device and its measurement method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879415A (en) * | 2012-09-25 | 2013-01-16 | 中国东方电气集团有限公司 | Device for testing contamination characteristic of segmental temperature control coal burning boiler |
| CN110261431B (en) * | 2019-06-24 | 2020-06-02 | 西安交通大学 | Transverse non-uniform indirect heating rectangular channel flow heat exchange characteristic test device |
-
2019
- 2019-12-25 CN CN201911359169.5A patent/CN110927203B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975718A (en) * | 2010-08-13 | 2011-02-16 | 中国科学院山西煤炭化学研究所 | Method for simultaneously measuring high-pressure gas adsorption capacity and adsorption swell capacity of coal petrography and measuring equipment |
| CN104777058A (en) * | 2015-03-24 | 2015-07-15 | 中国矿业大学 | Measurement device and method for free expansion volume of coal rock adsorption |
| EP3112854A1 (en) * | 2015-07-03 | 2017-01-04 | Netzsch Gerätebau GmbH | Method and device for the thermomechanical analysis of a sample |
| CN106324020A (en) * | 2015-07-03 | 2017-01-11 | 耐驰-仪器制造有限公司 | Method and apparatus for the thermomechanical analysis of a sample |
| CN106198586A (en) * | 2016-07-25 | 2016-12-07 | 中国矿业大学(北京) | A kind of absorption lower small-angle scattering research coal petrography thermal fracture device and method |
| CN109211684A (en) * | 2018-10-10 | 2019-01-15 | 吉林大学 | A kind of mechanical high-temerature creep testing machine of achievable automatic and accurate load |
| CN109470735A (en) * | 2018-12-05 | 2019-03-15 | 中国科学院长春光学精密机械与物理研究所 | Rod piece thermal expansion coefficient measuring device and its measurement method |
Non-Patent Citations (2)
| Title |
|---|
| Influence of Pyrolysis Gas on Volatile Yield and CO2 Reaction Kinetics of the Char Samples Generated in a High-Pressure, High-Temperature Flow Reactor;Vijayaragavan Krishnamoorthy 等;《energies》;20181229;第1-24页 * |
| 单轴应力-温度作用下煤中吸附瓦斯解吸特征;何满潮 等;《岩石力学与工程学报》;20100531;第29卷(第5期);第865-872页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110927203A (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101994509B (en) | Multipurpose ultrahigh-pressure packer tester | |
| WO2016019824A1 (en) | Multipoint coal and rock mass stress real-time monitoring device and method | |
| CN107576763B (en) | By means of ultrasound and high-temperature CO 2 Experimental device and method for promoting coal bed gas extraction | |
| CN111119877A (en) | Experimental device for seepage-heat transfer in-situ mining of compact oil shale | |
| CN105424331B (en) | The device and method of the mechanical seal evaluation of cement sheath when for massive hydraulic fracturing | |
| CN108590628A (en) | A kind of device and method of monitoring coal body drilling transformation-temperature-gas flow | |
| CN104914229A (en) | Multi-parameter high-temperature high-pressure major diameter rock core holder | |
| CN202195998U (en) | Device for testing diffusion coefficient of natural gas | |
| CN111795788A (en) | Mechanical loading type packer rubber cylinder simulation loading sealing experimental device and method | |
| CN106567998A (en) | Gas pipeline leakage detection simulation experiment platform based on optical fiber temperature sensor | |
| CN206906014U (en) | Combustible gas pipeline flame arrester performance test system | |
| CN110927203B (en) | Long coal petrography sample gas-liquid temperature rise adsorption expansion test chamber | |
| CN110823467A (en) | High-pressure sealing ring testing device and testing method | |
| CN201448106U (en) | Three-parameter seal examining instrument | |
| CN113565515B (en) | Device and method for testing pore water pressure in freezing method construction of subway communication channel on site | |
| CN108318345B (en) | Multi-azimuth borehole fracture pressure testing device | |
| CN110987764B (en) | Long coal rock sample gas-liquid seepage test system | |
| CN210774535U (en) | High-pressure sealing ring testing device | |
| CN111007100B (en) | Long coal rock sample solid-gas coupling adsorption expansion test system | |
| CN204203214U (en) | Multiparameter High Temperature High Pressure large diameter core clamper | |
| CN110927045B (en) | Long coal petrography sample gas-liquid seepage pressure chamber | |
| CN108533248B (en) | Casing annulus pressure simulator | |
| CN215931148U (en) | Coal mine underground coal seam gas pressure detection device | |
| CN208633813U (en) | A kind of monitoring coal body drilling transformation-temperature-gas flow device | |
| CN104695940A (en) | Device and method for measuring initial velocity of gas emission from borehole of coal bed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |