CN115219346A - Heating and pressurizing experimental device for tubular samples and method of using the same - Google Patents

Abstract

The application relates to a high-temperature and high-pressure test technology, and discloses a heating and pressurizing experimental device for a tubular sample and a using method thereof. The device comprises a heating furnace provided with a door body, a high-pressure sample part comprising a sample pressurization connecting pipeline and a pretightening force sealing device, wherein the door body is provided with a first pipeline, the heating furnace is also provided with a second pipeline for connecting a vacuum pump and at least one observation window for monitoring the experimental state of a tubular sample; the first port of the sample pressurizing connecting pipeline is used for connecting a tubular sample, the second port of the sample pressurizing connecting pipeline is used for connecting high-pressure gas, and the outer diameter of the sample pressurizing connecting pipeline is slightly smaller than the inner diameter of the first pipeline; the pretightening force sealing device is used for detachably and hermetically installing the high-pressure sample component in the first pipeline.

Description

Heating and pressurizing experimental device for tubular samples and method of using the same

technical field

The present application relates to the technology of high temperature and high pressure test equipment, in particular to the technology of heating and pressurization test equipment for tubular samples.

Background technique

The high temperature and high pressure condition testing of tubular structural samples is an important material performance testing method for structural materials used in various extreme conditions such as reactors, which can reflect the material properties such as creep and fatigue of tubular structural materials under extreme conditions to the greatest extent. change, and lay a good experimental foundation for engineering applications.

However, there is currently no high temperature and high pressure experimental device suitable for tubular structure samples, which cannot meet the high temperature and high pressure test requirements of tubular structure samples. Therefore, it is necessary to develop a device to meet the high temperature and high pressure test requirements of tubular structure samples. The material application under the conditions lays the foundation for the material parameters.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a heating and pressurizing experimental device for tubular samples and a method of using the same, which can ensure the best observation position of the sample while satisfying the tightness of the experimental device, and can realize the high temperature and high pressure in situ of the sample. The experimental function can provide more realistic data of the material under the corresponding service conditions.

The present application discloses a heating and pressurizing experimental device for tubular samples, comprising:

A heating furnace with a door body, the door body is provided with a first pipeline, and the heating furnace is also provided with a second pipeline for vacuuming and at least one observation window for monitoring the experimental state of the tubular sample;

A high-pressure sample part comprising a sample pressurized connection pipe, the first port of the sample pressurization connection pipe is used for connecting a tubular sample, the second port of the sample pressurization connection pipe is used for connecting high-pressure gas, the sample The outer diameter of the pressurized connection pipe is slightly smaller than the inner diameter of the first pipe;

A pre-tightening sealing device is used for detachably sealingly installing the high-pressure sample component in the first pipeline.

In a preferred example, the first pipe is extended by a preset length along the direction of its central axis toward the outside of the furnace;

The pre-tightening force sealing device includes a pre-tightening unit and a sealing unit, the pre-tightening unit is arranged on the extension part outside the furnace of the first pipe, and the sealing unit is arranged on the extension part outside the furnace of the first pipe and the sample pressurized connection between the pipes.

In a preferred embodiment, the at least one observation window includes a first observation window arranged in the axial direction of the tubular sample and at least one second observation window arranged in the radial direction of the tubular sample.

In a preferred embodiment, the heating furnace further includes a furnace body, and the furnace body is detachably connected to the door body in a detachable sealing manner, or is connected with a sealing hinge;

The high pressure sample component also includes a barometer and a valve disposed at its second port.

In a preferred embodiment, the second pipeline is also used for introducing inert gas;

A third pipe is also provided on the heating furnace, and the third pipe is used as an exhaust passage.

In a preferred example, the height of the second pipe is higher than the height of the third pipe;

Both the second pipe and the third pipe are arranged on the door body, and the height of the first pipe is between the height of the second pipe and the height of the third pipe.

In a preferred example, the second pipe and the third pipe are respectively extended by a preset length along the central axis direction toward the outside of the furnace;

Valves are respectively provided at the ports of the extension parts outside the furnace of the second pipeline and the third pipeline.

In a preferred example, the first port of the sample pressurized connection pipeline and the tubular sample are connected by welding and sealing;

The heating furnace has a built-in heating insulation and temperature control system.

The present application also discloses a method for using the aforementioned heating and pressurizing experimental device for tubular samples, including:

Open the door body, and weld the tubular sample with the sample pressurized connection pipeline passing through the first pipeline;

The door body is closed, and a pre-tightening force sealing device is used to seal and fix the sample pressurized connection pipe in the first pipe.

In a preferred embodiment, the at least one observation window includes a first observation window arranged in the axial direction of the tubular sample and at least one second observation window arranged in the radial direction of the tubular sample;

Before the use of the pre-tightening force sealing device to seal and fix the sample pressurized connection pipeline in the first pipeline, the method further includes:

Through the second observation window, adjust the position of the tubular sample pressurized connection pipeline in the heating furnace to ensure that the sample is within the observation range of the second observation window;

After the use of a pre-tightening force sealing device to seal and fix the sample pressurized connection pipeline in the first pipeline, the method further includes: monitoring the axial parameters of the tubular sample in real time through the first window and the second window respectively. and radial parameters.

In the embodiment of the present application, at least the following advantages and beneficial effects are included:

Open the sealing door, weld the tubular sample to the sample pressurized connection pipe placed through the first pipe reserved in the sealing door, close the sealing door, and adjust the sample in the furnace to the best observation position through the second observation window Afterwards, the sample pressurized connection pipeline is sealed and installed in the first pipeline through the pre-tightening force sealing device. While satisfying the tightness of the experimental device, the best observation position of the sample is ensured.

By setting one observation window in the axial direction and at least two observation windows in the radial direction, more comprehensive experimental data acquisition is realized, and the experimental accuracy is improved.

The second and third pipes are used as gas circulation channels to evacuate the furnace body or pass argon gas for protection, and at the same time fill the inside of the tubular sample with high-pressure gas, which realizes various extreme conditions such as ultra-supercritical reactors. The high-voltage test function can meet various experimental needs.

After ensuring that the vacuum or argon is filled with the furnace body, the heating and heating are started. The temperature control system can control the heating speed in real time and monitor the temperature in the furnace.

In addition, the embodiment of the present application well realizes the vacuum heating of the tubular sample and the experimental conditions of high temperature and high pressure, avoids adverse effects such as sample oxidation during heating, and provides a more comprehensive parameter monitoring for the tubular sample under high temperature and high pressure. Monitor conditions to improve the accuracy of your experiments.

A large number of technical features are recorded in the description of the application, which are distributed in various technical solutions. If it is necessary to list all possible combinations of technical features of the application (ie, technical solutions), the description will be too long. In order to avoid this problem, the technical features disclosed in the above-mentioned summary of the present application, the technical features disclosed in the various embodiments and examples below, and the technical features disclosed in the accompanying drawings can be freely combined with each other to form Various new technical solutions (these technical solutions are deemed to have been recorded in this specification), unless the combination of such technical features is technically infeasible. For example, in one example, features A+B+C are disclosed, and in another example, features A+B+D+E are disclosed, and features C and D are equivalent technical means that serve the same function. It can be used as soon as it is used, it is impossible to use it at the same time, and feature E can technically be combined with feature C, then the solution of A+B+C+D should not be regarded as having been recorded because it is technically infeasible, while A+B+ The C+E scheme shall be deemed to have been documented.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a heating and pressurizing experimental device for tubular samples according to the first embodiment of the present application.

FIG. 2 is a schematic structural diagram of an example furnace body according to the first embodiment of the present application.

FIG. 3 is a schematic diagram of an exemplary door body structure according to the first embodiment of the present application.

FIG. 4 is a schematic structural diagram of an example high-voltage sample component according to the first embodiment of the present application.

FIG. 5 is a schematic structural diagram of an exemplary preload sealing device according to the first embodiment of the present application.

FIG. 6 is a schematic flowchart of a method for using the heating and pressurizing experimental device for tubular samples according to the second embodiment of the present application.

FIG. 7 is a schematic diagram of the state after the experimental preparation of the example experimental apparatus shown in FIG. 1 according to the present application is completed.

in,

101-heating furnace 1011-furnace body 1012-door body

102-High pressure sample part 103-Preload sealing device 201-First viewing window

202-Second viewing window 301-First pipe 302-Second pipe

303-Third Pipe 401-Tube Sample 402-Preload Gasket

403-Barometer 404-Valve 405-Sample Pressure Connection Pipe

Detailed ways

In the following description, numerous technical details are set forth in order to provide the reader with a better understanding of the present application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be realized.

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

The first embodiment of the present application relates to a heating and pressurizing experimental device for tubular samples, as shown in Figs. .

Specifically, the heating furnace 101 includes a furnace body 1011 and a door body 1012, the door body 1012 is provided with a first pipe 301, and the heating furnace 101 is also provided with a second pipe 302 for connecting to a vacuum pump and for monitoring the tube type At least one viewing window for the state of the sample. Wherein, the vacuum pump and the second pipeline 302 can be connected by a clamp or screw, for example.

Optionally, the door body 1012 and the furnace body 1011 are detachably and sealedly connected through a detachable structure and a sealing structure. For example, the sealing structure may be a sealing gasket provided on the door body 1012 and/or the furnace body 1011 . For example, the lower surface of the door body 1012 is provided with a pulley, and the furnace body 1011 is provided with a guide rail under the side where the door body 1012 is installed, wherein the pulley and the guide rail cooperate to form the detachable structure. Optionally, the door body 1012 and the furnace body 1011 may also be connected by a sealed hinge or the like.

Wherein, the second pipe 302 may be provided on the furnace body 1011 or on the door body 1012 . Optionally, the heating furnace 101 may also be provided with a third pipe 303 . Further, the second conduit 302 and the third conduit 303 provide circulation channels for the inert gas to circulate. For example, the second pipe 302 is used for introducing inert gas, and the third pipe 303 is used as a gas outflow channel.

Optionally, the height of the second duct 302 is higher than the height of the third duct 303 . Optionally, both the second duct 302 and the third duct 303 are disposed on the door body 1012 , and the height of the first duct 301 is between the height of the second duct 302 and the height of the third duct 303 .

Optionally, the second pipe 302 and the third pipe 303 respectively extend a preset length to the outside of the furnace along the direction of their respective central axes, and the specific length can be set as required. Equipped with valves and clamped or threaded connections to vacuum pump and barometer.

Optionally, the first pipe 301 is, for example, passing through the door body 1012 and sealed with the door body 1012 by welding; the second pipe 302 and the third pipe 303 are, for example, passing through the furnace body 1011 or the door body 1012 to be sealed by welding. , to ensure sealing.

The at least one observation window is used to observe the parameter changes of the sample under high temperature and high pressure experimental conditions, and the two provide a reliable interface for realizing real-time data monitoring and ensure that the experiment can be performed in situ. Each observation window is preferably made of high temperature resistant material. A sample parameter detection device, such as but not limited to a laser detector, is externally connected to each observation window.

Optionally, as shown in FIGS. 1 and 2 , the at least one observation window includes a first observation window 201 arranged in the axial direction of the tubular sample and a second observation window 202 arranged in the radial direction of the tubular sample, The first observation window 201 is used to monitor the axial state of the tubular sample, and the second observation window 202 is used to monitor the radial state of the tubular sample. Further, the second observation window 202 is also used to adjust the position of the tubular sample in the furnace to ensure that the tubular sample is in the best observation position of the second observation window 202 when the high-pressure sample component is installed.

Optionally, the at least one observation window may further comprise a first observation window arranged in the axial direction of the tubular sample and a plurality of second observation windows arranged in the radial direction of the tubular sample, and the first observation windows are used for The axial experimental state of the tubular sample is monitored, and a plurality of second observation windows are used to respectively monitor the radial experimental state of the tubular sample at different positions. For example, the furnace body is arranged in a cylindrical shape, and the plurality of second observation windows may be distributed around the furnace body at equidistant or non-equidistant intervals, for example. For another example, the furnace body is set in the shape of a cuboid or a cube, and the plurality of second observation windows may be distributed on four sides of the cuboid or cube, for example.

The high-pressure sample part 102 includes a sample pressurized connection pipe, the first port of the sample pressurized connection pipe is used to connect the tubular sample, the second port of the sample pressurized connection pipe is used to connect high pressure gas, and the sample pressurized connection The outer diameter of the pipe is slightly smaller than the inner diameter of the first pipe, so as to facilitate the subsequent pre-tightening sealing installation after the sample pressurized connection pipe is passed through the first pipe.

Optionally, the first port of the sample pressurized connection pipeline is connected to the tubular sample such as but not limited to by welding.

Optionally, the high-pressure sample component 102 further includes a barometer and a valve disposed at the second port of the sample pressurized connection pipeline.

Figure 4 shows an example high pressure sample part. As shown in FIG. 4 , the high-pressure sample part 102 includes a tubular sample 401, a pre-tightening force sealing washer 402, a barometer 403, a valve 404 and a sample pressurizing connection pipe 405; wherein, the pre-tightening force sealing washer 402 is fixed on the sample The outer side of the pressure connection pipe 405 is used to seal the sample pressure connection pipe 405 and the first pipe 301 during the subsequent pre-tightening sealing installation. The tubular sample 401 and the sample pressure connection pipe 405 are welded and sealed, which further ensures the high pressure. The sample parts are sealed. When in use, the high-pressure sample part is connected to the high-pressure gas through the second port to fill the tubular sample, and the gas pressure is controlled by the barometer 403 and the valve 404, which can simulate the pressure in the pipeline of the reactor or other high-temperature and high-pressure working environment. compression conditions, such as axial and longitudinal compression.

The pre-tightening force sealing device 103 is used for detachably sealingly installing the sample pressurized connection pipeline in the first pipeline 301 . This not only facilitates the loading and unloading of samples without damaging the sealing of the door, but also adjusts the position of the tubular sample in the furnace as required.

Optionally, the pre-tightening force sealing device 103 includes a pre-tightening unit and a sealing unit, and the sealing unit is made of elastic material. As shown in FIG. 5, an example pre-tightening force sealing device is shown. The pre-tightening unit may be, for example, a jacket clamp 304 provided on the portion of the first pipe 301 extending to the outside of the furnace. The sealing unit may be, for example, provided in the sample pressurization The sealing gasket 302 on the outer surface of the connecting pipe is connected, so as to realize the detachable sealing installation of the sample pressurized connecting pipe in the first pipe 301 .

Optionally, the heating furnace 101 also has a built-in heating and heat preservation and temperature control system to ensure that the temperature in the furnace is stable and adjustable.

The second embodiment of the present application relates to a method of using a heating and pressurizing experimental device for a tubular sample, the heating and pressing experimental device is the heating and pressurizing experimental device according to the first embodiment, and a flowchart of the method of use As shown in Figure 6, it specifically includes the following steps:

Begin, in step 601, before the experiment starts, open the door, and weld the tubular sample with the sample pressure connection pipeline passing through the first pipeline;

After that, go to step 602, close the door, and seal and fix the sample pressurized connection pipeline in the first pipeline by using a pre-tightening force sealing device.

It should be pointed out that steps 601 to 602 are experimental preparation stages, and specific experimental operations can be performed according to specific process parameter requirements, which belong to the prior art and are not developed in this application.

Optionally, the at least one observation window includes a first observation window arranged in the axial direction of the tubular sample and at least one second observation window arranged in the radial direction of the tubular sample. In this optional embodiment, before the “using a pre-tightening force sealing device to seal and fix the sample pressurized connection pipeline in the first pipeline”, the following step may be further included: adjusting the tubular sample pressure through the second observation window. The position of the pressure connection pipeline in the heating furnace to ensure that the sample is within the observation range of the second observation window; It includes the following steps: monitoring the axial parameters and radial parameters of the tubular sample in real time through the first window and the second window respectively.

For example, the method of using the experimental device as shown in FIG. 1 specifically includes: first, opening the door body, and welding the tubular sample with the pressure connecting pipeline of the sample placed through the first pipeline of the door body; then, Close and fasten the door body to ensure the overall sealing of the door and the furnace body; at the same time, through the second observation window, adjust the position of the tubular sample pressure connection pipe in the heating furnace to ensure that the sample is in the observation range of the second observation window Then, use a pre-tightening force sealing device to seal and install the sample pressurized connection pipeline in the first pipeline, and at the same time play the role of fixing the position of the sample and the sample pressurized connection pipeline, as shown in Figure 7 for the experimental device. Then, open the vacuum pump or argon protection device connected to the second and third pipelines and the valve of the sample pressurization connection pipeline, vacuumize the heating furnace or conduct argon protection, and use the barometer to heat the heating furnace. The vacuum degree in the furnace is monitored to ensure that a suitable vacuum degree is reached, or argon gas is introduced to realize the circulating flow of argon gas, so as to ensure that the sample will not be oxidized during heating and ensure the normal operation of the experiment (for example, the vacuum degree can reach 10Pa, etc., to ensure that the sample will not be oxidized during heating, start heating after the vacuum or argon gas is filled with the furnace body, and can be raised to 1200 °C and kept warm, etc.); Enter high-pressure gas (such as high-pressure gas, up to 49Mpa, etc.) to realize the function of high-pressure testing under various extreme conditions such as ultra-supercritical reactors, and start after ensuring that the vacuum degree meets the requirements or argon gas is filled with the furnace body Heating and heating, the temperature is controlled by the temperature control system of the furnace body to rise to the preset experimental temperature and then kept warm; finally, the corresponding parameters of the tubular sample are monitored through the first and second observation windows by using external equipment such as optical monitoring instruments. Therefore, the corresponding behavior of the sample under high temperature and high pressure can be reflected in real time, and the function of in-situ and real-time measurement can be realized.

It should be noted that, in the application documents of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element. In the application documents of this patent, if it is mentioned that an action is performed according to a certain element, it means at least that the action is performed according to the element, which includes two situations: the action is performed only according to the element, and the action is performed according to the element and Other elements perform this behavior. Expressions such as multiple, multiple, multiple, etc. include 2, 2, 2, and 2 or more, 2 or more, and 2 or more.

All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they may be relied upon for modification if necessary. In addition, it should be understood that after reading the above disclosure of the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope of protection claimed in the present application.

Claims (10)

1. a heating and pressurizing experimental device for tubular sample, is characterized in that, comprises: A heating furnace with a door body, the door body is provided with a first pipeline, and the heating furnace is also provided with a second pipeline for vacuuming and at least one observation window for monitoring the experimental state of the tubular sample; A high-pressure sample part comprising a sample pressurized connection pipe, the first port of the sample pressurization connection pipe is used for connecting a tubular sample, the second port of the sample pressurization connection pipe is used for connecting high-pressure gas, the sample The outer diameter of the pressurized connection pipe is slightly smaller than the inner diameter of the first pipe; A pre-tightening sealing device is used for detachably sealingly installing the high-pressure sample component in the first pipeline. 2. The heating and pressurizing experimental device for tubular samples as claimed in claim 1, wherein the first pipe extends a preset length toward the outside of the furnace along the direction of its central axis; The pre-tightening force sealing device includes a pre-tightening unit and a sealing unit, the pre-tightening unit is arranged on the extension part outside the furnace of the first pipe, and the sealing unit is arranged on the extension part outside the furnace of the first pipe and the sample pressurized connection between the pipes. 3. The heating and pressurizing experimental device for tubular samples according to claim 1 or 2, wherein the at least one observation window comprises a first observation window arranged in the axial direction of the tubular sample and a device. At least one second viewing window in the radial direction of the tubular sample. 4 . The heating and pressurizing experimental device for tubular samples according to claim 1 , wherein the heating furnace further comprises a furnace body, and the furnace body and the door body are detachably and sealedly connected, or sealed. 5 . hinged connection; The high pressure sample component also includes a barometer and a valve disposed at its second port. 5. The heating and pressurizing experimental device for tubular samples as claimed in claim 1, wherein the second pipeline is also used for introducing an inert gas; A third pipe is also provided on the heating furnace, and the third pipe is used as an exhaust passage. 6. The heating and pressurizing experimental device for tubular samples according to claim 5, wherein the height of the second pipe is higher than the height of the third pipe; Both the second pipe and the third pipe are arranged on the door body, and the height of the first pipe is between the height of the second pipe and the height of the third pipe. 7 . The heating and pressurizing experimental device for tubular samples according to claim 6 , wherein the second pipeline and the third pipeline are respectively extended by a preset length along the direction of their respective central axes toward the outside of the furnace; 7 . Valves are respectively provided at the ports of the extension parts outside the furnace of the second pipeline and the third pipeline. 8. The heating and pressurizing experimental device for tubular samples according to claim 1, wherein the first port of the sample pressurized connection pipeline and the tubular sample are connected by welding and sealing; The heating furnace has a built-in heating insulation and temperature control system. 9. A method of using a heating and pressurizing experimental device for tubular samples as claimed in claim 1, characterized in that, comprising: Open the door body, and weld the tubular sample with the sample pressurized connection pipeline passing through the first pipeline; The door body is closed, and a pre-tightening force sealing device is used to seal and fix the sample pressurized connection pipe in the first pipe. 10. The method of claim 9, wherein the at least one observation window comprises a first observation window disposed in the axial direction of the tubular sample and a first observation window disposed in the radial direction of the tubular sample at least one second viewing window; Before the use of the pre-tightening force sealing device to seal and fix the sample pressurized connection pipeline in the first pipeline, the method further includes the following steps: adjusting the position of the tubular sample pressurized connection pipeline in the heating furnace through the second observation window To ensure that the sample is within the observation range of the second observation window; After the sample pressurized connection pipeline is sealed and fixed in the first pipeline by using a pre-tightening force sealing device, the following steps are further included: monitoring the axis of the tubular sample in real time through the first window and the second window respectively Axial and radial parameters.

Images