Online testing device for cement cured by carbon dioxide gas

Abstract

The invention discloses an online testing device for cement cured by carbon dioxide gas. The online testing device comprises a shell, a testing structure and a displacement structure, a mounting framework is arranged on the shell; the testing structure is mounted in the mounting framework, the testing structure comprises a sample bin and a first injection channel, the sample bin is formed in the testing structure to be suitable for containing a to-be-tested sample, and the first injection channel is connected with the sample bin; the displacement structure comprises a displacement pipeline, the displacement pipeline extends to abut against the test structure, and the pipeline in the displacement structure is communicated with the first injection channel so as to introduce test gases with different pressures into the sample bin. According to the structure, the carbon dioxide input device is connected through the displacement structure, carbon dioxide gas with different pressures and temperatures can be introduced into the sample bin in real time through the displacement pipeline and the first injection channel without disassembly, the application range of the device is expanded, and the optimal pressure and temperature state of the carbon dioxide curing gas can be tested.

Description

Technical Field

[0001] The invention relates to the technical field of cement curing testing, and in particular to an online testing device for carbon dioxide gas curing cement. Background Art

[0002] With the continuous advancement of related work, various studies on the utilization and storage of carbon dioxide have continued to become hot topics, attracting a large number of scientific workers and continuous investment of massive resources. Cement is a material consumed in large quantities in the daily life of the entire nation. If carbon can be stored in cement and the mechanical properties of cement after solidification can be improved, then while achieving carbon dioxide storage, it can further bring economic benefits. Carbon-fixing concrete is currently one of the most economically feasible innovative products.

[0003] The existing application of carbon dioxide gas curing cement is relatively popular. As for the detection method, it is similar to the conventional cement curing detection method, and cement curing is carried out in an offline pressure vessel. However, this offline pressure vessel cement curing device can only meet the pressure resistance requirements, the operation is relatively complicated, and it is easily affected by the external environment, such as temperature, humidity, etc.

[0004] However, although the existing carbon dioxide gas curing cement device can meet the requirements of cement curing and pressure resistance, it cannot perform real-time testing and apply different pressures, which limits its scope of application and cannot test the optimal temperature and pressure state of carbon dioxide curing cement. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is that the existing device for curing cement with carbon dioxide gas can meet the requirements of cement curing and pressure resistance, but cannot perform real-time testing and apply different pressures, which limits its scope of application and cannot test the defects of the optimal temperature and pressure state of carbon dioxide curing cement.

[0006] To this end, the present invention provides an online testing device for carbon dioxide gas curing cement, comprising:

[0007] A housing, wherein a mounting frame is provided on the housing;

[0008] A test structure, the test structure is installed in the installation frame, the test structure includes a sample chamber and a first injection channel, the sample chamber is opened in the test structure to accommodate a sample to be tested, and the first injection channel is connected to the sample chamber;

[0009] A displacement structure includes a displacement pipeline, the displacement pipeline extends and abuts against the test structure, and a pipeline in the displacement structure is connected with the first injection channel to introduce test gases of different pressures into the sample chamber.

[0010] Optionally, the above-mentioned test structure includes:

[0011] A sample chamber body, wherein the sample chamber body is opened toward one side and is provided with a receiving cavity;

[0012] A sample chamber plug, wherein a sample sealing portion is provided at one end of the sample chamber plug close to the sample chamber body, the outer diameter of the sample sealing portion is the same as the inner diameter of the accommodating cavity, and the sample sealing portion can be inserted into the accommodating cavity to enclose the sample chamber; the first injection channel is opened in the sample sealing portion along its axial direction; a first mounting groove is opened at one end of the sample chamber plug away from the sample chamber body; the first mounting groove is connected to the first injection channel;

[0013] Wherein, when the sample sealing portion is inserted into the accommodating cavity to form a test piece, the first injection channel is communicated with the sample chamber.

[0014] Optionally, the above-mentioned online testing device for carbon dioxide gas curing cement further includes a waveguide sealing structure installed on both sides of the testing structure;

[0015] The test structure also includes:

[0016] A cylinder, wherein the cylinder is a hollow structure, and the waveguide sealing structure limits the position of the test piece and installs it in the cylinder;

[0017] A heat-insulating pipe, wherein the heat-insulating pipe is sleeved outside the cylinder;

[0018] The two waveguide sealing structures also limit the cylinder and the thermal insulation tube within the installation frame.

[0019] Optionally, the waveguide sealing structure comprises the following components connected in sequence from close to the test piece to far away from the test piece:

[0020] A waveguide tube, wherein waveguide tube bosses are provided on both sides of the waveguide tube, one end of the waveguide tube bosses is plugged into the shell, and the inner wall of the waveguide tube abuts against the outer wall of the thermal insulation tube;

[0021] A waveguide sealing ring, the waveguide sealing ring comprising a first waveguide sealing portion close to the waveguide and a second waveguide sealing portion away from the waveguide, the first waveguide sealing portion being sleeved on the waveguide boss away from the test piece, the first waveguide sealing portion and the second waveguide sealing portion being arranged in a stepped shape to form a stepped surface, the stepped surface abutting against the end of the thermal insulation tube; the waveguide sealing ring is used to limit the cylinder;

[0022] A waveguide sealing ring cover is sleeved on the second waveguide sealing portion.

[0023] Optionally, the above-mentioned online testing device for carbon dioxide gas curing cement further comprises a first clamp plug and a second clamp plug, wherein the first clamp plug and the second clamp plug are respectively plugged into two ends of the cylinder;

[0024] One end of the first clamper plug close to the test piece abuts against the sample chamber plug, and a first injection hole is provided on the first clamper plug corresponding to the first injection channel;

[0025] One end of the second clamper plug close to the test piece abuts against the sample chamber body.

[0026] Optionally, a liquid injection cavity and a confining pressure pipeline liquid injection hole are provided on the first clamper plug and the second clamper plug, the liquid injection cavity is provided at one end of the first clamper plug and the second clamper plug close to the test piece, one end of the confining pressure pipeline liquid injection hole is connected to the liquid injection cavity, and the other end is connected to the external confining pressure pipeline;

[0027] Wherein, confining pressure pipeline injection grooves are provided at both ends of the test piece corresponding to the injection cavity, and the confining pressure liquid can flow through the confining pressure pipeline injection grooves to between the test piece and the cylinder.

[0028] Optionally, the above displacement structure includes:

[0029] a displacement pipe, wherein the displacement pipe is inserted into the first injection hole;

[0030] A displacement partition body, the displacement partition body being arranged at an end of the displacement pipeline away from the test piece;

[0031] The installation assembly is provided with two installation assemblies, and the two installation assemblies are symmetrically arranged at the two ends of the displacement pipeline; the installation assembly is suitable for respectively installing the two ends of the displacement pipeline on the displacement partition body and in the first installation groove.

[0032] Optionally, the above-mentioned installation assembly includes:

[0033] A fastener, wherein the fastener is sleeved on the displacement pipe;

[0034] A displacement pipe sealing ring, wherein the displacement pipe sealing ring is threadedly connected to an end of the displacement pipe;

[0035] A sealing spacer ring is adapted to abut against the end of the displacement pipeline, and the sealing spacer ring is provided with a through hole along its axial direction to connect the pipeline in the displacement pipeline and the first injection channel.

[0036] Optionally, the displacement pipe sealing ring is threadedly connected to the end of the displacement pipe in a reverse thread.

[0037] Optionally, the displacement partition body comprises a second mounting groove and a displacement inner hole, wherein the second mounting groove is provided at both ends of the displacement partition body, and the displacement inner hole is provided between two second mounting grooves to connect the two second mounting grooves;

[0038] Wherein, the inner diameter of the displacement inner hole is smaller than the inner diameter of the second mounting groove.

[0039] The technical solution provided by the present invention has the following advantages:

[0040] 1. The present invention provides an online testing device for carbon dioxide gas-cured cement, comprising: a shell, a test structure and a displacement structure; a mounting frame is provided on the shell; the test structure is installed in the mounting frame, the test structure comprises a sample bin and a first injection channel, the sample bin is opened in the test structure to accommodate a sample to be tested, and the first injection channel is connected to the sample bin; the displacement structure comprises a displacement pipeline, the displacement pipeline extends and abuts against the test structure, and the pipeline in the displacement structure is connected to the first injection channel to introduce test gases of different pressures into the sample bin body.

[0041] This structure is connected to the carbon dioxide input device through the displacement structure, and carbon dioxide gas with different pressures and temperatures can be introduced into the sample chamber in real time through the displacement pipeline and the first injection channel without disassembly, thereby expanding its application range and being able to test the optimal pressure and temperature state of the carbon dioxide curing gas.

[0042] 2. The carbon dioxide curing gas probe coil device provided by the present invention has a simple and reliable structure, and can apply different pressures and temperatures to the sample for testing. In addition, the online testing device for carbon dioxide gas curing cement provided by the present invention, its waveguide sealing structure, the first clamp plug and the second clamp plug, the fixation and sealing of the cylinder and the test piece, etc., not only improve the strength and stability of the device, but also reduce the volume and weight of the device. In general, the online testing device for carbon dioxide gas curing cement provided by the present invention is expected to have broad application prospects and market demands in the fields of carbon dioxide utilization, storage, and carbon dioxide online curing technology due to its advantages such as online curing, simple structural design, and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the overall structure of an online testing device for carbon dioxide gas-cured cement provided by the present invention;

[0045] Figure 2 A cross-sectional view of an online testing device for carbon dioxide gas-cured cement provided by the present invention;

[0046] Figure 3 A perspective view of a first holder plug provided by the present invention;

[0047] Figure 4 A perspective view of a second holder plug provided by the present invention;

[0048] Figure 5 A perspective view of a cylinder provided by the present invention;

[0049] Figure 6 A perspective view of a sample chamber plug provided by the present invention;

[0050] Figure 7 A perspective view of a sample chamber provided by the present invention;

[0051] Figure 8 A perspective view of a displacement partition body provided by the present invention;

[0052] Fig. 9 A perspective view of a sealing spacer ring provided by the present invention;

[0053] Fig.10 A perspective view of a displacement pipe sealing ring provided by the present invention;

[0054] Fig.11 A perspective view of a displacement conduit provided by the present invention;

[0055] Fig.12 A perspective view of a front plate provided for the present invention;

[0056] Fig.13 A perspective view of a waveguide provided for the present invention;

[0057] Fig.14 A schematic structural diagram of a waveguide sealing ring provided by the present invention;

[0058] Fig.15A schematic structural diagram of a waveguide sealing ring cover provided by the present invention;

[0059] Fig.16 A perspective view of the insulated pipe provided by the present invention;

[0060] Fig.17 A schematic diagram of the assembly of the installation assembly and the displacement pipeline provided by the present invention;

[0061] Description of reference numerals:

[0062] 1-housing; 11-front plate; 111-frame mounting hole; 112-waveguide limiting ring; 12-rear plate; 13-side plate;

[0063] 2-Install the frame;

[0064] 3-test structure; 31-sample chamber; 311-chamber limit groove; 312-accommodation chamber; 32-sample chamber plug; 321-first injection channel; 322-first installation groove; 323-plug limit groove; 324-sample sealing part; 33-cylinder; 34-insulation tube; 341-cooling injection channel; 35-confining pressure pipeline injection groove; 36-sample chamber;

[0065] 4-waveguide sealing structure; 41-waveguide; 411-waveguide boss; 412-cooling injection port; 42-waveguide sealing ring; 421-first waveguide sealing part; 422-second waveguide sealing part; 43-waveguide sealing ring cover;

[0066] 51 - first clamp plug; 511 - first injection hole; 52 - second clamp plug; 53 - injection cavity; 54 - confining pressure pipeline injection hole;

[0067] 6-Confining pressure pipeline;

[0068] 7-displacement structure; 71-displacement pipeline; 72-displacement partition body; 721-second installation groove; 722-displacement inner hole; 73-installation assembly; 731-fastener; 732-displacement pipeline sealing ring; 733-sealing spacer ring. DETAILED DESCRIPTION

[0069] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0073] Example

[0074] This embodiment provides an online testing device for carbon dioxide gas curing cement. Figures 1 to 17 As shown, it includes a housing 1 , a test structure 3 and a displacement structure 7 .

[0075] like Figure 1 As shown, the housing 1 includes a front plate 11, a rear plate 12, two side plates 13, a top plate and a bottom plate. The front plate 11 and the rear plate 12 are symmetrically arranged, and the front plate 11 and the rear plate 12 have the same structure for fixing the test structure 3. The front plate 11 is taken as an example to illustrate the structures of the two. A frame mounting hole 111 is provided in the middle of the plate, a waveguide limiting ring 112 is provided at the edge of the frame mounting hole 111, a waveguide 41 fixing hole is provided around the frame mounting hole 111, and a plurality of threaded holes are provided on the side of the front plate 11. The two side plates 13 are copper-clad plates, and threaded holes are provided at the edges of the side plates 13. Screws or bolts are passed through the threaded holes on the side plates 13 and the threaded holes on the front plate 11 and the rear plate 12 to fix the two side plates 13 to the front plate 11 and the rear plate 12. The top plate and the bottom plate are respectively fixed to the top and bottom ends of the front plate 11 and the rear plate 12 through the threaded holes on the edges of the top plates of the screws or bolts and the threaded holes on the front plate 11 and the rear plate 12. The front plate 11, the rear plate 12, the two side plates 13, the top plate and the bottom plate form a six-sided cubic housing 1. A plurality of grooves are also provided on the bottom plate to reduce the weight of the entire device.

[0076] like Figure 1 As shown, the mounting frame 2 is cylindrical, and its two ends are respectively fixed in the frame mounting holes 111 of the front plate 11 and the rear plate 12. The mounting frame 2 is also provided with a plurality of annular protrusions on the outer surface to enhance the strength of the entire mounting frame 2 to meet the test simulation requirements.

[0077] The test structure 3 is provided with a test piece, a cylinder 33 and a heat insulation tube 34 in sequence from the inside to the outside. Figure 6 and Figure 7 As shown, the test piece includes a sample chamber body 31 and a sample chamber plug 32; the sample chamber body 31 and the sample chamber plug 32 are arranged in sequence from right to left. A receiving chamber 312 opening toward the sample chamber plug 32 is provided at the left end of the sample chamber body 31 facing the sample chamber plug 32. A chamber body limiting groove 311 and a confining pressure pipeline injection groove 35 are provided on the right side of the sample chamber body 31 away from the receiving chamber 312. A sample sealing portion 324 is provided at the right end of the sample chamber plug 32 close to the sample chamber body 31. The outer diameter of the sample sealing portion 324 is equal to the inner diameter of the receiving chamber 312. A sealing groove is also provided on the outer side of the sample sealing portion 324. After the sealing ring is installed in the sealing groove, the sample sealing portion 324 is inserted into the receiving chamber 312 to seal the two. The length of the sample plugging portion 324 in the axial direction is less than the length of the accommodating cavity 312. When the sample plugging portion 324 is inserted into the accommodating cavity 312, a part of the cavity is left as the sample chamber 36, and the sample to be tested, that is, cement, can be placed in the sample chamber. A first injection channel 321 is also provided in the sample plugging portion 324 along the axial direction. The right end of the first injection channel 321 passes through the sample plugging portion 324. When the sample plugging portion 324 is inserted into the accommodating cavity 312 to form a test piece, the first injection channel 321 is connected to the sample chamber 36. A first mounting groove 322 is provided at the left end of the first injection channel 321 away from the sample chamber body 31. The inner diameter of the left end of the first mounting groove 322 is larger than the inner diameter of the first injection channel 321. The right end of the first mounting groove 322 is tapered to connect the left end of the first mounting groove 322 and the first injection channel 321. The inner wall of the left end of the first mounting groove 322 is also provided with a thread. The first mounting groove 322 is connected to the first injection channel 321. A plug limiting groove 323 and a confining pressure pipeline injection groove 35 are formed at one end of the sample chamber plug 32 away from the sample chamber body 31 .

[0078] like Figure 1 and Figure 5 As shown, the cylinder 33 is sleeved on the outside of the test piece, the inner diameter of the cylinder 33 is larger than the outer diameter of the test piece, and threads are provided on the inner walls at both ends of the cylinder 33. The inner walls of the cylinder 33 also have a protrusion at both ends, and the two protrusions fit the threads at both ends. The outer walls of the cylinder 33 are provided with limit grooves at both ends.

[0079] like Figure 1 and Fig.16As shown, the heat-insulating tube 34 is sleeved outside the cylinder 33, the inner wall of the heat-insulating tube 34 is arranged in contact with the outer surface of the cylinder 33, and a heat-insulating cavity is provided in the middle of the inner wall of the heat-insulating tube 34, and the heat-insulating cavity and the outer surface of the cylinder 33 form a cavity, which reduces the weight and the rate of heat transfer to the cylinder 33. Sealing grooves are provided on both sides of the inner wall of the heat-insulating tube 34, and sealing rings are installed in the sealing grooves to seal between the heat-insulating tube 34 and the cylinder 33. The inner diameter of the mounting frame 2 is slightly larger than the outer diameter of the heat-insulating tube 34, and a cooling chamber is formed in the middle, and a through cooling injection channel 341 is provided on the heat-insulating tube 34. A cooling injection port 412 connected to the cooling injection channel 341 is provided on the waveguide 41. Cooling liquid can be introduced into the cooling chamber.

[0080] Specifically, Figures 1 to 17 As shown, the present invention fixes the entire test piece, the cylinder 33 and the insulation tube 34 in the mounting frame 2 through the waveguide sealing structure 4, the first clamp plug 51 and the second clamp plug 52. Two waveguide sealing structures 4 are provided, and the two waveguide sealing structures 4 are symmetrically arranged at both ends of the mounting frame 2. The structure of the waveguide tube sealing structure 4 on the left side is explained as an example. From the left end away from the test piece to the right end close to the test piece, the following are arranged in sequence: a waveguide tube sealing ring cover 43, a waveguide tube sealing ring 42 and a waveguide tube 41. There are waveguide tube bosses 411 on both sides of the waveguide tube 41. The waveguide tube boss 411 on the right end can be inserted into the waveguide tube limiting ring 112 at the corner of the front plate 11 and the mounting frame 2. At this time, the outer wall of the waveguide tube 41 fits the front plate 11, and screws or bolts can be passed through the threaded holes on the outer wall of the waveguide tube 41 and the threaded holes on the front plate 11 to fix the waveguide tube 41 on the front plate 11. The inner wall of the waveguide tube 41 abuts against the outer wall of the thermal insulation tube 34; the waveguide tube sealing ring 42 includes a first waveguide tube sealing portion 421 close to the waveguide tube 41 and a second waveguide tube sealing portion 422 away from the waveguide tube 41. The waveguide sealing part 421 is sleeved on the waveguide boss 411 away from the test piece. The first waveguide sealing part 421 and the second waveguide sealing part 422 are arranged in a stepped shape, and a stepped surface is formed between the two. The stepped surface abuts against the left end surface of the heat insulation tube 34 to limit the heat insulation tube 34. The inner wall of the second waveguide sealing part 422 is provided with a ring array of limiting members, and the limiting members on the waveguide sealing rings 42 at both ends abut against the limiting grooves on the cylinder 33 to fix and limit the cylinder 33. The outer wall of the second waveguide sealing part 422 is provided with threads, and the waveguide sealing ring cover 43 is sleeved on the second waveguide sealing part 422 through threaded connection to achieve the fixing of the waveguide sealing ring cover 43, and the inner wall of the waveguide sealing ring cover 43 abuts against the end of the cylinder 33 to further limit the cylinder 33. Through holes are provided in the middle of the waveguide sealing ring cover 43, the waveguide sealing ring 42 and the waveguide 41.

[0081] In this embodiment, if Figures 1 to 17 As shown, the online testing device for carbon dioxide gas-cured cement also includes a first clamp plug 51 and a second clamp plug 52, which are respectively plugged into the two ends of the cylinder 33; the first clamp plug 51 and the second clamp plug 52 are provided with threads on the outer wall surface of one end close to the test piece, and the threads are adapted to the threads on the inner walls at both ends of the cylinder 33, and the first clamp plug 51 and the second clamp plug 52 can be rotated into the two ends of the cylinder 33 to abut on both sides of the test piece, so as to abut on both sides of the test piece to limit the test piece. Specifically, as Figure 1 As shown, the left side is the first clamp plug 51, and the right side is the second clamp plug 52. The outer wall of the first clamp plug 51 and the second clamp plug 52 close to the test piece is provided with a thread, which is matched with the thread of the inner wall at both ends of the cylinder 33. The first clamp plug 51 and the second clamp plug 52 are installed at both ends of the cylinder 33 through threaded connection. Through the threaded connection, the test piece can be clamped firmly. A first injection hole 511 is provided on the first clamper plug 51 corresponding to the first injection channel 321; a liquid injection cavity 53 and a confining pressure pipeline liquid injection hole 54 are provided on the first clamper plug 51 and the second clamper plug 52 on the first clamp, the liquid injection cavity 53 is provided at one end of the first clamper plug 51 and the second clamper plug 52 close to the test piece, one end of the confining pressure pipeline liquid injection hole 54 is connected with the liquid injection cavity 53, and the other end is connected with the external confining pressure pipeline 6; confining pressure pipeline liquid injection grooves 35 are provided at both ends of the test piece corresponding to the liquid injection cavity 53, and the confining pressure liquid can reach between the test piece and the cylinder 33 through the confining pressure pipeline liquid injection grooves 35.

[0082] In this embodiment, if Figures 1 to 17 As shown, the displacement structure 7 includes: a displacement pipe 71, a displacement partition body 72 and a mounting assembly 73. The displacement pipe 71 is inserted into the first injection hole 511; the displacement partition body 72 is arranged at one end of the displacement pipe 71 away from the test piece; there are two mounting assemblies 73, and the two mounting assemblies 73 are symmetrically arranged at both ends of the displacement pipe 71; the mounting assembly 73 is suitable for mounting the two ends of the displacement pipe 71 on the displacement partition body 72 and in the first mounting groove 322 respectively. The two ends of the displacement pipe 71 are conical heads and the outer wall of the conical head is provided with threads on the inner side.

[0083] like Figure 8As shown, the displacement partition body 72 is cylindrical as a whole, and a second mounting groove 721 is provided at both ends. The two second mounting grooves 721 are opened toward both sides respectively, and the displacement inner hole 722 is provided between the displacement partition body 72, and the two ends are respectively connected to the two second mounting grooves 721, and the inner diameter of the displacement inner hole 722 is smaller than the inner diameter of the second mounting groove 721. The second mounting groove 721 has threads, and the displacement partition adapter is respectively threadedly connected. The displacement partition adapter is threadedly installed in the second mounting groove 721, and a flow channel is also provided in the middle of the displacement partition adapter.

[0084] like Fig.17 As shown; the installation assembly 73 includes: a fastener 731, a displacement pipe sealing ring 732 and a sealing spacer 733 which are arranged in sequence along the middle to the end of the displacement pipe 71, the fastener 731 is sleeved on the thread on the displacement pipe 71 close to one end of the middle part of the displacement pipe 71, and the displacement pipe sealing ring 732 is connected to the thread of the end of the displacement pipe 71; the two ends of the displacement pipe 71 are set to be conical, and the sealing spacer 733 is also conical as a whole. A conical groove is provided at one end of the sealing spacer 733 close to the displacement pipe 71, and the inner wall of the conical groove abuts against the end of the displacement pipe 71, and the outer wall of the other end abuts against the first installation groove 322 or the displacement partition adapter.

[0085] The specific installation steps of the online testing device for carbon dioxide gas curing cement provided in this embodiment are as follows: Step 1, install the two ends of the installation skeleton 2 on the skeleton installation holes 111 of the front plate 11 and the rear plate 12 through threaded connection, and connect the fixing holes on the front plate 11 and the rear plate 12 with the threaded holes of the two side plates 13, the top plate and the bottom plate to complete the construction of the overall outer frame. Step 2, install the sealing ring at the sealing groove and the outer contour in the waveguide 41, the waveguide boss 411 is inserted into the waveguide limiting ring 112, and screws or bolts are passed through the threaded holes on the outer wall of the waveguide 41 and the threaded holes on the front plate 11 to fix the waveguide 41 on the front plate 11 and the rear plate 12, so that the fixing of the waveguide 41 is completed. The outer contour of the waveguide 41 has a groove to reduce the heat transferred by the plug to the RF coil. Step 3: Prepare the insulation ring and the sealing ring, install the sealing ring at the internal sealing grooves at the front and rear ends of the insulation ring, and then put the insulation ring with the sealing ring installed into the waveguide tube 41. Since there is a sealing ring inside the waveguide tube 41, the insulation ring can be sealed by friction. Step 4: Put it into the insulation ring through the cylinder 33. Since there is a sealing ring inside the insulation ring, the cylinder 33 can be sealed by the sealing ring. Step 5: Connect and fix the waveguide with the waveguide sealing ring 42. While the waveguide sealing ring 42 is fixed, the waveguide sealing ring 42 can be fixed to the cylinder 33 by the internal limit block of the waveguide sealing ring 42 and the limit groove on the cylinder 33. The stepped surface inside the waveguide sealing ring 42 abuts against the end face of the insulation ring to achieve the limit fixation of the insulation ring. Step 6: Through the thread on the waveguide sealing ring cover 43, the threaded installation is performed with the thread on the waveguide sealing ring 42 to achieve the fixing of the waveguide sealing ring cover 43. Step 7: Install the sealing ring in the sealing groove opened on the outside of the end of the second clamp plug 52 close to the test piece; install and fix the confining pressure pipeline 6 through the thread and the threaded hole at the rear end of the adapter, and the adapter is threadedly installed on the end of the confining pressure pipeline injection hole 54 away from the test piece; fix the sealing ring and the second clamp plug 52 of the confining pressure pipe, and tighten and fix the second clamp plug 52 through the thread of the second clamp plug 52 and the thread of the inner wall of the end of the cylinder 33, so as to fix the position of the second clamp plug 52. Step 8: Add a sealing ring at the sealing groove outside the sample sealing part 324, plug it into the accommodating cavity 312, and seal the sample chamber 36. Ensure that the experimental sample will not leak outside.The fastener 731, the displacement pipe sealing ring 732 and the sealing spacer ring 733 are installed at the end of the displacement pipe 71 and placed in the first installation groove 322. The sealing spacer ring 733 is made of PEEK material, so that the connection of the displacement pipe 71 will not damage the inside of the sample chamber plug 32. The sealing ring and the displacement pipe 71 are designed with reverse threads, so that when pressure is applied to the sample chamber 36, the threaded connection between the sealing ring and the displacement pipe 71 can be tightened by the reaction force to prevent the displacement pipe 71 and the sealing spacer ring 733 from being misaligned or even detached. The fastener 731 is connected to the internal thread of the first installation groove 322, so that the confining pressure fastening screw can be fixed, and the sealing ring and the sealing spacer ring 733 can be fixed at the same time. Step 9: After the test piece is placed in the cylinder 33 as a whole, the limiting protrusion in the second clamp plug 52 is clamped into the limiting groove at the end of the sample chamber body 31 to limit the test piece. Similarly, the first clamp plug 51 limits the sample chamber plug 32 to achieve the fixation of the test piece inside the cylinder 33. At the same time, the first clamp plug 51 is connected to the cylinder 33 thread by thread, which can achieve the fixation of the first clamp plug 51. In this way, when pressure is applied to the sample, the sample chamber 36 can transmit the internal force to the first clamp plug 51 and the second clamp plug 52, which can ensure the stability of the overall structure. Step 11: The displacement partition inlet adapter is fixed by matching the thread on the displacement partition body 72 with the thread on the displacement partition body 72. Step 12. Fix the outlet adapter of the displacement partition to the displacement partition by cooperating the threads on the outlet of the displacement partition body 72. At the same time, the outlet adapter is connected with the sealing spacer ring 733, the displacement pipe sealing ring 732, the fastener 731 and the displacement pipe 71 to ensure the fixation of the outlet adapter of the displacement partition and the displacement pipe 71. At the same time, the sealing ring is designed with a reverse thread structure to ensure better overall pressure bearing and stability.

[0086] The steps for using the online testing device for carbon dioxide gas curing cement provided in this embodiment are as follows: place the cement to be tested in the sample bin 36, assemble the online testing device for carbon dioxide gas curing cement according to the above steps, and fill the first injection hole 511 and the injection cavity 53 with confining pressure liquid through the confining pressure pipeline 6 at one end. The confining pressure liquid reaches between the test piece and the cylinder 33 through the confining pressure pipeline injection groove 35, and is output through the confining pressure pipeline 6 at the other end, ensuring the relative stability of the external environmental pressure of the test piece during the test. The carbon dioxide input device is connected through the displacement structure 7, and carbon dioxide gas of different pressures and temperatures can be introduced into the sample bin 36 in real time through the displacement pipeline and the first injection channel 321 without disassembly, which expands its application range and can test the optimal pressure and temperature state of the carbon dioxide curing gas.

[0087] The carbon dioxide curing gas probe coil device provided by the present invention has a simple and reliable structure, and can apply different pressures and temperatures to the sample for testing. In addition, the online testing device for carbon dioxide gas curing cement provided by the present invention, its waveguide sealing structure 4, the first clamp plug 51 and the second clamp plug 52, the fixation and sealing of the cylinder 33 and the test piece, etc., not only improve the strength and stability of the device, but also reduce the volume and weight of the device. In general, the online testing device for carbon dioxide gas curing cement provided by the present invention is expected to have broad application prospects and market demand in the fields of carbon dioxide utilization, storage, and carbon dioxide online curing technology due to the advantages of realizing online curing, simple structural design, and a wide range of applications.

[0088] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An online testing device for carbon dioxide gas curing cement, characterized in that: include: A housing (1), wherein a mounting frame (2) is provided on the housing (1); A test structure (3), the test structure (3) being installed in the installation frame (2), the test structure (3) comprising a sample chamber (36) and a first injection channel (321), the sample chamber (36) being opened in the test structure (3) to accommodate a sample to be tested, the first injection channel (321) being connected to the sample chamber (36); A displacement structure (7), the displacement structure (7) comprising a displacement pipeline (71), the displacement pipeline (71) extending and abutting against the test structure (3), the pipeline in the displacement structure (7) being connected to the first injection channel (321) so as to introduce test gases of different pressures into the sample chamber (36).

2. The online testing device for carbon dioxide gas curing cement according to claim 1 is characterized in that: The test structure (3) comprises: A sample chamber body (31), wherein the sample chamber body (31) is provided with a receiving cavity (312) opening toward one side; A sample chamber plug (32), wherein a sample sealing portion (324) is provided at one end of the sample chamber plug (32) close to the sample chamber body (31), the outer diameter of the sample sealing portion (324) is the same as the inner diameter of the accommodating cavity (312), and the sample sealing portion (324) can be inserted into the accommodating cavity (312) to enclose the sample chamber (36); the first injection channel (321) is opened in the sample sealing portion (324) along its axial direction; a first installation groove (322) is opened at one end of the sample chamber plug (32) away from the sample chamber body (31); the first installation groove (322) is connected to the first injection channel (321); Wherein, when the sample sealing portion (324) is inserted into the accommodating cavity (312) to form a test piece, the first injection channel (321) is connected to the sample chamber (36).

3. The online testing device for carbon dioxide gas curing cement according to claim 2 is characterized in that: The on-line testing device for carbon dioxide gas curing cement further comprises a waveguide sealing structure (4) installed on both sides of the testing structure (3); The test structure (3) further comprises: A cylinder (33), wherein the cylinder (33) is a hollow structure, and the waveguide sealing structure (4) limits the position of the test piece and installs it in the cylinder (33); A heat-insulating tube (34), wherein the heat-insulating tube (34) is sleeved outside the cylinder (33); The two waveguide sealing structures (4) also limit the position of the cylinder (33) and the thermal insulation tube (34) within the installation frame (2).

4. The online testing device for carbon dioxide gas curing cement according to claim 3 is characterized in that: The waveguide sealing structure (4) comprises: A waveguide tube (41), wherein waveguide tube bosses (411) are provided on both sides of the waveguide tube (41), one end of the waveguide tube boss (411) is plugged into the shell (1), and the inner wall of the waveguide tube (41) abuts against the outer wall of the thermal insulation tube (34); A waveguide sealing ring (42), the waveguide sealing ring (42) comprising a first waveguide sealing portion (421) close to the waveguide (41) and a second waveguide sealing portion (422) away from the waveguide (41), the first waveguide sealing portion (421) being sleeved on the waveguide boss (411) away from the test piece, the first waveguide sealing portion (421) and the second waveguide sealing portion (422) being arranged in a stepped shape to form a stepped surface, the stepped surface abutting against the end of the thermal insulation tube (34); the waveguide sealing ring (42) is used to limit the cylinder (33); A waveguide tube sealing ring cover (43), wherein the waveguide tube sealing ring cover (43) is sleeved on the second waveguide tube sealing portion (422).

5. The on-line testing device for carbon dioxide gas curing cement according to claim 3 is characterized in that: The online testing device for carbon dioxide gas curing cement further comprises a first clamp plug (51) and a second clamp plug (52), wherein the first clamp plug (51) and the second clamp plug (52) are respectively plugged into two ends of the cylinder (33); One end of the first clamp plug (51) close to the test piece abuts against the sample chamber plug (32), and a first injection hole (511) is provided on the first clamp plug (51) corresponding to the first injection channel (321); One end of the second clamp plug (52) close to the test piece abuts against the sample chamber body (31).

6. The on-line testing device for carbon dioxide gas curing cement according to claim 5, characterized in that: The first clamp plug (51) and the second clamp plug (52) are provided with a liquid injection cavity (53) and a confining pressure pipeline liquid injection hole (54); the liquid injection cavity (53) is provided at one end of the first clamp plug (51) and the second clamp plug (52) close to the test piece; one end of the confining pressure pipeline liquid injection hole (54) is connected to the liquid injection cavity (53), and the other end is connected to the external confining pressure pipeline (6); Wherein, confining pressure pipeline injection grooves (35) are provided at both ends of the test piece corresponding to the injection cavity (53), and the confining pressure liquid can flow between the test piece and the cylinder (33) through the confining pressure pipeline injection grooves (35).

7. The on-line testing device for carbon dioxide gas curing cement according to claim 6, characterized in that: The displacement structure (7) comprises: a displacement pipe (71), the displacement pipe (71) being inserted into the first injection hole (511); a displacement partition body (72), wherein the displacement partition body (72) is arranged at an end of the displacement pipe (71) away from the test piece; A mounting assembly (73), wherein two mounting assemblies (73) are provided, and the two mounting assemblies (73) are symmetrically arranged at the two ends of the displacement pipe (71); the mounting assembly (73) is suitable for respectively installing the two ends of the displacement pipe (71) on the displacement partition body (72) and in the first mounting groove (322).

8. The on-line testing device for carbon dioxide gas curing cement according to claim 7, characterized in that: The installation assembly (73) comprises: A fastener (731), wherein the fastener (731) is sleeved on the displacement pipe (71); A displacement pipe sealing ring (732), wherein the displacement pipe sealing ring (732) is threadedly connected to the end of the displacement pipe (71); A sealing spacer (733), wherein the sealing spacer (733) is suitable for abutting against the end of the displacement pipe (71), and the sealing spacer (733) is provided with a through hole along its axial direction to connect the pipeline in the displacement pipe (71) and the first injection channel (321).

9. The on-line testing device for carbon dioxide gas curing cement according to claim 8, characterized in that: The displacement pipe sealing ring (732) is threadedly connected to the end of the displacement pipe (71) in the form of a reverse thread.

10. The on-line testing device for carbon dioxide gas-cured cement according to any one of claims 7 to 9, characterized in that: The displacement partition body (72) comprises a second mounting groove (721) and a displacement inner hole (722), wherein the second mounting groove (721) is provided at both ends of the displacement partition body (72), and the displacement inner hole (722) is provided between two second mounting grooves (721) to connect the two second mounting grooves (721); Wherein, the inner diameter of the displacement inner hole (722) is smaller than the inner diameter of the second mounting groove (721).

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