CN111693345B - Liquid sample flexible shell and auxiliary tool and method for manufacturing same - Google Patents
Liquid sample flexible shell and auxiliary tool and method for manufacturing same Download PDFInfo
- Publication number
- CN111693345B CN111693345B CN202010517485.7A CN202010517485A CN111693345B CN 111693345 B CN111693345 B CN 111693345B CN 202010517485 A CN202010517485 A CN 202010517485A CN 111693345 B CN111693345 B CN 111693345B
- Authority
- CN
- China
- Prior art keywords
- pressure head
- wall
- sheet
- column
- outer cylinder
- 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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a liquid sample flexible shell, and a manufacturing auxiliary tool and a manufacturing method thereof. The flexible shell of the liquid sample comprises a flexible sample shaping piece, a sample base and a pressure head, wherein a liquid injection hole is formed in the pressure head, a sealing bolt is connected in the liquid injection hole, and the flexible sample shaping piece is a heat-shrinkable tube; the sample base comprises a pressure head outer cylinder and a pressure head inner cylinder; the auxiliary tool comprises a positioning column and a spliced positioning tube sleeved outside the positioning column. During the system shell, will make auxiliary fixtures and place between sample base and pressure head to scribble the gluing agent in two pressure head sides, heating pyrocondensation pipe makes its shrink to closely wrap up pressure head, auxiliary fixtures, pressure head urceolus, treat that the gluing agent solidifies the back, take out auxiliary fixtures from pressure head urceolus inboard, connect pressure head urceolus and pressure head inner prop at last, accomplish system shell. The invention can prepare liquid samples wrapped by the flexible shell in different shapes and sizes by changing the shapes of the pressure head and the auxiliary tool, and is suitable for carrying out experimental researches such as pressure phase change and the like.
Description
Technical Field
The invention relates to a flexible shell of a liquid sample, belonging to the technical field of liquid sample manufacturing.
The invention also relates to an auxiliary tool and a method for manufacturing the liquid sample flexible shell.
Background
The method is limited by a sample preparation process, the current mechanical experiment research of the pressure solidification material is to pressurize and solidify a sample material in a rigid container, then process a solidified body to a specific size through removing a mold or drilling and the like to form a solid sample, and finally transfer the solid sample to a testing device for experiment. The stress state of the sample in the processing and transferring processes is not controllable, and the solid sample has the defects of microcracks and the like due to the existence of poor stress history such as impact, friction, instant stress removal and the like, so that the effect of pressure solidification cannot be completely reflected.
Chinese patent publication No. CN108088757B discloses a triaxial mechanical test device and method for simulating a process of freezing into ice by high-pressure water, and chinese patent publication No. CN110470085B discloses a triaxial pressure freezing ice-making method. Both of these documents solve the above problems by continuously controlling the stress state of the sample during the whole process of solidification and testing, while both experimental methods basically assume the fabrication of a liquid sample wrapped by a flexible sheath.
The sample housing for mechanical experiments is usually composed of a rigid indenter at both ends and a flexible membrane at the side. When a solid sample is prepared, the flexible film may be directly and tightly bound to the side surface of the solid sample, but this method is not suitable for preparing a liquid sample. First, the liquid is amorphous, and the housing needs to be processed to the shape and size required by the experiment to maintain the shape of the liquid sample, and then the liquid is injected into the housing. Secondly, the sealed liquid sample not only needs to prevent the internal seepage of an external hydraulic loading medium, but also needs to prevent the outflow of sample substances, and the sealing requirement cannot be met only by enabling the flexible film to be tightly attached to the side face of the pressure head by means of the self-tensioning force of the flexible film. Therefore, a method for manufacturing a flexible enclosure for a liquid sample is needed to solve the problems of shaping and sealing the liquid sample.
Disclosure of Invention
The invention provides a flexible shell for a liquid sample, aiming at the defects of the prior art. The shell can limit the shape and size of the liquid sample, so that the geometric accuracy of the liquid sample meets the test requirement; in addition, the shell has good sealing performance and prevents an external hydraulic loading medium from contacting with a sample substance.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a flexible shell for a liquid sample comprises a hollow flexible sample shaping piece, a sample base and a pressure head, wherein the sample base and the pressure head are respectively and correspondingly connected with two ends of the flexible sample shaping piece; the sample base comprises a pressure head outer cylinder and a pressure head inner column; wherein: the outer cylinder of the pressure head is assembled at one end of the heat shrinkable tube, and the outer wall of the outer cylinder of the pressure head is bonded with the inner wall of the heat shrinkable tube into a whole; the pressure head is assembled at the other end of the heat shrinkable tube, and the outer wall of the pressure head is bonded with the inner wall of the heat shrinkable tube into a whole; the pressure head inner column is assembled in the pressure head outer cylinder; at least two matching connecting surfaces are arranged between the outer wall of the pressure head inner column and the inner wall of the pressure head outer cylinder, wherein one matching connecting surface is a thread matching connecting surface, and the other matching connecting surface is a sealing connecting matching surface; the sealing connection matching surface is positioned at the inner side of the thread matching connection surface, and the inner diameter of the pressure head outer barrel at the position corresponding to the sealing connection matching surface is smaller than the inner diameter of the pressure head outer barrel at the position corresponding to the thread matching connection surface.
As a further improvement of the flexible shell for the liquid sample, the inner wall of the pressure head outer cylinder is arranged in a T shape and comprises an inner wall a, an inner wall b and an inner wall step surface connected between the inner wall a and the inner wall b, and the diameter of the inner wall a is larger than that of the inner wall b;
the outer wall of the pressure head inner column is arranged in a T shape and comprises an outer wall a, an outer wall b and an outer wall step surface connected between the outer wall a and the outer wall b, and the diameter of the outer wall a is larger than that of the outer wall b;
the outer wall a and the inner wall a are fastened in a threaded fit connection mode, the outer wall step surface is abutted against the inner wall step surface a, the outer wall b is in clearance fit with the inner wall b, an annular caulking groove a is formed in the outer wall b, a sealing ring a is embedded in the caulking groove a, and the outer circular surface of the sealing ring a is sealed with the inner wall b.
As a further improvement of the flexible shell for the liquid sample, the liquid injection hole is arranged in a T shape and comprises a threaded hole and a unthreaded hole, and the inner diameter of the threaded hole is larger than that of the unthreaded hole;
the sealing bolt is arranged in a T shape and comprises a smooth surface column and a threaded column, and the outer diameter of the threaded column is larger than that of the smooth surface column;
the outer edge surface of the threaded column is fixed with the threaded hole in a threaded fit connection mode, and a step surface between the threaded column and the smooth surface column is tightly abutted against a step surface between the threaded hole and the smooth hole; the smooth surface column is in clearance fit with the unthreaded hole, an annular caulking groove b is arranged on the outer wall of the smooth surface column, a sealing ring b is embedded in the caulking groove b, and the outer circular surface of the sealing ring b is sealed with the inner wall of the unthreaded hole.
As a further improvement of the flexible shell for the liquid sample, the heat shrinkable tube is a circular tube or a polygonal tube.
Another technical object of the present invention is to provide the auxiliary tooling for manufacturing the flexible shell of the liquid sample, which comprises a supporting tube, a positioning post, a positioning hole and a positioning hole, wherein the supporting tube comprises a positioning post and a splicing type positioning tube which is sleeved on the periphery of the positioning post and is coaxially arranged with the inner positioning post; wherein:
the positioning column is arranged in a T shape and comprises a column section a and a column section b; the outer diameter of the column section a is matched with the inner diameter of the sealing matching surface of the inner wall of the pressure head outer cylinder, and the outer diameter of the column section b is matched with the inner diameter of the unthreaded hole of the liquid injection hole;
the spliced shaping pipe is formed by splicing a plurality of sheet-shaped members, and the sheet-shaped members are arranged along the circumferential direction of the spliced shaping pipe;
the inner diameter of the spliced type fixed pipe is matched with the outer diameter of the column section a, and the shape of the outer wall of the spliced type fixed pipe is matched with the shape of the inner wall of the heat shrinkable pipe.
As a further improvement of the auxiliary tool, the spliced shaping pipe is formed by splicing four sheet-shaped components; the four sheet-shaped components are respectively a sheet-shaped component a, a sheet-shaped component b, a sheet-shaped component c and a sheet-shaped component d; splicing seams formed between the sheet-shaped member a and the sheet-shaped members b and c are arranged along the radial direction of the splicing type shaped pipe; the splicing seams formed between the sheet-shaped member d and the sheet-shaped members b and c are parallel to the axial symmetry plane of the sheet-shaped member d.
As a further improvement of the auxiliary tool, the inner wall of the spliced shaped pipe is in a circular arrangement, and the outer wall of the spliced shaped pipe is in a circular or polygonal arrangement.
As a further improvement of the auxiliary tool, the axial length of the spliced shaped pipe is consistent with the distance between the end part of the pressure head outer cylinder and the end part of the pressure head.
As a further improvement of the auxiliary tool, the axial length of the column section a is equal to the sum of the axial length of the spliced shaped pipe and the axial length of the pressure head outer cylinder; the axial length of the column section b is less than that of the unthreaded hole of the liquid injection hole.
The invention further aims to provide a manufacturing method of the liquid sample flexible shell, which is completed based on an auxiliary tool, wherein the auxiliary tool comprises a supporting pipe, and the supporting pipe comprises a positioning column and a splicing type positioning pipe which is sleeved on the periphery of the positioning column and is coaxially arranged with the inner positioning column; the positioning column is arranged in a T shape and comprises a column section a and a column section b; the spliced shaping pipe is formed by splicing a sheet-shaped member a, a sheet-shaped member b, a sheet-shaped member c and a sheet-shaped member d, wherein the sheet-shaped member a, the sheet-shaped member b, the sheet-shaped member c and the sheet-shaped member d are arranged along the circumferential direction of the spliced shaping pipe; splicing seams formed between the sheet-shaped member a and the sheet-shaped members b and c are arranged along the radial direction of the splicing type shaped pipe; splicing seams formed between the sheet-shaped component d and the sheet-shaped components b and c are parallel to the axial symmetry plane of the sheet-shaped component d; when the flexible shell of the liquid sample is manufactured, the method comprises the following steps:
step one, a section of column body close to the end part of a column section a is sleeved in a pressure head outer cylinder, and the end part of the column section a is flush with the outer side end part of the pressure head outer cylinder; sleeving the column section b in a unthreaded hole of a liquid injection hole arranged on the pressure head, and enabling a step surface between the column section a and the column section b to be tightly abutted against the end surface of the inner side of the pressure head;
step two, assembling each sheet-shaped component forming the spliced shape-fixing pipe on the periphery of a column section a between the outer cylinder of the pressure head and the pressure head respectively, and enabling the two axial ends of each sheet-shaped component to be in contact with the end surface of the inner side of the outer cylinder of the pressure head and the end surface of the inner side of the pressure head respectively;
step three, coating adhesives on the outer cylinder of the pressure head and the outer wall of the pressure head respectively;
fourthly, sleeving a heat-shrinkable tube on the outer side of the pressure head outer cylinder, the pressure head and the splicing type fixed tube, and heating the heat-shrinkable tube to enable the heat-shrinkable tube to shrink to tightly wrap the pressure head outer cylinder, the pressure head and the splicing type fixed tube;
and step five, after the adhesive is completely cured, taking out the positioning column from the inner side of the outer cylinder of the pressure head, firstly removing the sheet-shaped component d inwards along the radial direction of the heat-shrinkable tube, then taking out the sheet-shaped component d from the inner side of the outer cylinder of the pressure head, then removing the sheet-shaped component b and the sheet-shaped component c respectively, taking out the sheet-shaped component a, then taking out the sheet-shaped component a, finally assembling the inner column of the pressure head into the outer cylinder of the pressure head, assembling the sealing bolt into the liquid injection hole, and finishing the manufacture of the flexible shell of the liquid sample.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the heat shrinkable tube is adopted as the flexible sample shaping piece of the flexible shell of the liquid sample, the support piece with a specific shape can be assembled in the heat shrinkable tube, and the heat shrinkable tube is promoted to shrink and wrap the periphery of the support piece through heating, so that the flexible sample shaping piece with a preset shape is obtained, and the shapes of various liquid samples meeting the requirements are met.
2. According to the invention, the heat shrinkage and shaping of the heat shrinkable tube are completed by providing a specific auxiliary tool, so that a preset sample shape can be obtained. By changing the shapes of the pressure head and the support (the splicing type fixed pipe), liquid samples with different shapes and sizes can be prepared so as to adapt to different types of loading experiments, such as a pseudo triaxial experiment and a true triaxial experiment which are commonly used in geotechnical experiment research.
3. The outer cylinder of the pressure head assembled at the end part of the heat-shrinkable tube is in sealing connection with the inner column of the pressure head through a specific detachable sealing structure, has good sealing performance and prevents an external hydraulic loading medium from contacting with a sample substance.
4. In the process of manufacturing the liquid sample flexible shell, the pressure head and the supporting tube are fixing members which are repeatedly used, only the heat-shrinkable tube and the corresponding adhesive are used as consumables, and the shell manufacturing cost is low.
5. The shaping pipe adopts a splicing structure, and is convenient to disassemble after the thermal shrinkage molding of the thermal shrinkage pipe. Furthermore, one sheet member d of each sheet member which is spliced circumferentially to form the shaped pipe and a splicing seam formed between two adjacent sheet members are parallel to the axial symmetry plane of the sheet member d. Due to the structural arrangement, the subsequent shaped pipe can be better detached.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of a flexible enclosure for a liquid sample according to the present invention;
FIG. 2 is a cross-sectional view of the auxiliary tool of the present invention for manufacturing the flexible housing of the liquid sample in FIG. 1;
FIG. 3 is a schematic view of section A-A of FIG. 2;
FIG. 4 is a cross-sectional view of a second embodiment of a flexible enclosure for a liquid sample according to the present invention;
fig. 5a-5c are three views of the flexible enclosure for a liquid sample of fig. 4, wherein: FIG. 5a is a front view, FIG. 5b is a top view, and FIG. 5c is a left side view;
FIG. 6 is a cross-sectional view of the auxiliary tooling of the present invention manufacturing the flexible enclosure of the liquid sample of FIG. 4;
fig. 7 is a schematic view of the B-B section of fig. 6.
In the figure: 1-a pressure head outer cylinder, 2-a pressure head inner column, 3-a sealing ring a, 4-a pressure head, 5-a liquid injection hole, 6-a sealing bolt, 7-a sealing ring b, 8-a positioning column and 9-a splicing type positioning tube; 9-1, sheet-like members a, 9-2, sheet-like members b, 9-3, sheet-like members c, 9-4, and sheet-like members d, 10-heat shrinkable tubes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The relative arrangement of the components and steps, expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations).
As shown in fig. 1, 4 and 5a-5c, the flexible liquid sample housing according to the present invention includes a flexible sample shape-fixing member, a sample base, and a pressure head 4, wherein the sample base and the pressure head 4 are respectively connected to two ends of the flexible sample shape-fixing member, the pressure head 4 is provided with a liquid injection hole 5, a sealing bolt 6 is connected to the liquid injection hole 5, and the flexible sample shape-fixing member is a heat shrinkable tube 10, such that a flexible sample shape-fixing member with a suitable shape and size can be obtained by heat shrinkage shape-fixing, so as to meet a test requirement; the sample base comprises a pressure head outer cylinder 1 and a pressure head inner cylinder 2; wherein: the pressure head outer cylinder 1 is assembled at one end of the heat shrinkable tube 10, and the outer wall of the pressure head outer cylinder 1 and the inner wall of the heat shrinkable tube 10 are bonded into a whole through an adhesive; the pressure head 4 is assembled at the other end of the heat shrinkable tube 10, and the outer wall of the pressure head 4 and the inner wall of the heat shrinkable tube 10 are bonded into a whole through an adhesive; the heat shrinkable tube 10 directly transmits the pressure of an external hydraulic loading medium and the pressure of an internal liquid sample to each other, so that the hydraulic pressure of the external hydraulic loading medium is equal to the liquid pressure of the internal sample, when the sample is pressurized, the joint of the heat shrinkable tube 10, the sample base and the pressure head 4 is tightly attached to the side surfaces of the sample base and the pressure head 4 under the combined action of the pressing force of the external hydraulic loading medium and the adhesive force of the adhesive, and the hydraulic pressure of the hydraulic loading medium and the hydraulic pressure of the liquid sample cannot be larger than the combined acting force of the joint, so that the connection mode can effectively prevent the internal seepage of the external hydraulic loading medium and the outflow of sample substances; the pressure head inner column 2 is assembled in the pressure head outer cylinder 1, at least two matching connecting surfaces are arranged between the outer wall of the pressure head inner column 2 and the inner wall of the pressure head outer cylinder 1, one matching connecting surface is a thread matching connecting surface, and the other matching connecting surface is a sealing connecting matching surface; the sealing connection matching surface is positioned at the inner side of the thread matching connection surface, and the inner diameter of the pressure head outer cylinder 1 at the position corresponding to the sealing connection matching surface is smaller than the inner diameter of the pressure head outer cylinder 1 at the position corresponding to the thread matching connection surface.
The liquid sample flexible enclosure of the present invention will be described in detail below with reference to two specific embodiments.
Example 1
As shown in fig. 1, the flexible casing for a liquid sample according to this embodiment includes a heat shrinkable tube 10, a pressure head outer cylinder 1, a pressure head inner column 2, a pressure head 4, a sealing bolt 6, a sealing ring a3, and a sealing ring b 7; wherein:
the heat shrinkable tube 10 is arranged in a circular shape, the pressure head outer cylinder 1 is internally plugged at the left end of the heat shrinkable tube 10, and an adhesive bonding mode is adopted, so that the outer wall of the pressure head outer cylinder 1 and a section of tube body at the left end of the heat shrinkable tube 10 are connected into a whole. In this embodiment, the inner wall of the pressure head outer cylinder 1 is in a T-shape, and includes an inner wall a, an inner wall b, and an inner wall step surface connected between the inner wall a and the inner wall b, and the diameter of the inner wall a is greater than that of the inner wall b.
The pressure head inner column 2 is sleeved in the pressure head outer cylinder 1, and the axial length of the pressure head inner column 2 is consistent with that of the pressure head outer cylinder 1. In this embodiment, the outer wall of pressure head inner prop 2 is the T shape setting, including outer wall a, outer wall b and connect the outer wall step face between outer wall a, outer wall b, the diameter of outer wall a is greater than the diameter of outer wall b.
When the pressure head inner column 2 is assembled in the pressure head outer cylinder 1, the outer wall a and the inner wall a are fastened in a threaded fit connection mode, the outer wall step surface abuts against the inner wall step surface, the outer wall b is in clearance fit with the inner wall b, an annular caulking groove a is formed in the outer wall b, a sealing ring a3 is embedded in the caulking groove a, and the outer circular surface of the sealing ring a3 is sealed with the inner wall b.
The pressure head 4 is assembled at the right end of the heat shrinkable tube 10, and the outer wall of the pressure head 4 is connected with a section of tube body at the right end of the heat shrinkable tube 10 into a whole by adopting an adhesive bonding mode. The liquid injection hole 5 is arranged on the pressing head 4 along the axis position. The liquid injection hole 5 is arranged in a T shape and comprises a threaded hole and a unthreaded hole, and the inner diameter of the threaded hole is larger than that of the unthreaded hole; the sealing bolt 6 is arranged in a T shape and comprises a smooth surface column and a threaded column, and the outer diameter of the threaded column is larger than that of the smooth surface column; the outer edge surface of the threaded column is fixed with the threaded hole in a threaded fit connection mode, and a step surface between the threaded column and the smooth surface column is tightly abutted against a step surface between the threaded hole and the smooth hole; the smooth surface column is in clearance fit with the unthreaded hole, an annular caulking groove b is formed in the outer wall of the smooth section, a sealing ring b7 is embedded in the caulking groove b, and the outer circular surface of the sealing ring b7 is sealed with the inner wall of the unthreaded hole.
In order to obtain the heat shrinkable tube 10 with a specific shape and size, the present embodiment provides an auxiliary tool, which fully considers the structural characteristics of the flexible shell of the liquid sample.
Specifically, the auxiliary tool of the embodiment includes a supporting tube, where the supporting tube includes a positioning column 8 and a splicing type shaping tube 9 that is sleeved on the periphery of the positioning column 8 and is coaxial with the inner positioning column; wherein:
the positioning column 8 is arranged in a T shape, is a second-order trapezoidal cylinder and comprises a column section a and a column section b; the outer diameter of the column section a is matched with the inner diameter of the sealing matching surface of the inner wall of the pressure head outer cylinder 1, and the outer diameter of the column section b is matched with the inner diameter of the unthreaded hole of the liquid injection hole 5. The column section a is equal to the sum of the length of the spliced shaping pipe 9 and the length of the pressure head outer cylinder 1, the diameter of the column section a is equal to the minimum inner diameter of the pressure head outer cylinder 1, the length of the column section b is slightly smaller than the length of the liquid injection hole 5, and the diameter of the column section b is equal to the minimum diameter of the liquid injection hole 5.
The spliced shaping pipe 9 is formed by splicing a plurality of sheet-shaped members, and each sheet-shaped member is arranged along the circumferential direction of the spliced shaping pipe 9; the inner diameter of the spliced shaping tube 9 is matched with the outer diameter of the column section a, and the outer wall shape of the spliced shaping tube 9 is matched with the inner wall shape of the heat shrinkable tube 10. Therefore, in this embodiment, the inner side of the spliced shaping tube 9 is a cylindrical surface, the diameter of the spliced shaping tube is equal to the minimum inner diameter of the outer cylinder 1 of the pressure head, the outer shape and the size of the spliced shaping tube are the same as the designed shape and the size of the liquid sample, and the outer wall of the spliced shaping tube 9 is circular because the sample designed in this embodiment is circular. In addition, in this embodiment, the spliced shaped pipe 9 is formed by splicing four sheet-shaped members, and the four sheet-shaped members are arranged along the circumferential direction of the spliced shaped pipe 9; the four sheet-shaped components are respectively a sheet-shaped component a9-1, a sheet-shaped component b9-2, a sheet-shaped component c9-3 and a sheet-shaped component d 9-4; the splicing seams formed between the sheet-shaped member a9-1 and the sheet-shaped members b9-2 and c9-3 are arranged along the radial direction of the spliced shaping pipe 9; the splicing seams formed between the sheet-shaped member d9-4 and the sheet-shaped members b9-2 and c9-3 are parallel to the axial symmetry plane of the sheet-shaped member d 9-4.
The initial length of the heat shrinkable tube 10 is equal to the sum of the lengths of the pressure head outer cylinder 1, the pressure head 4 and the splicing type shaping tube 9, the section size is slightly larger than the designed section size of the liquid sample, after the heat shrinkable tube is heated and shrunk, the length of the heat shrinkable tube is slightly smaller than the sum of the axial lengths of the pressure head outer cylinder 1, the pressure head 4 and the splicing type shaping tube 9, and the section shape and the size of the heat shrinkable tube are the same as the designed section shape and the size of the liquid sample.
In order to obtain the flexible shell for the liquid sample, the invention provides a method which is realized based on the auxiliary tool and specifically comprises the following steps:
step one, a section of column body close to the end of a column section a is sleeved in a pressure head outer cylinder 1, and the end of the column section a is flush with the outer side end of the pressure head outer cylinder 1; sleeving the column section b in a unthreaded hole of a liquid injection hole 5 arranged on a pressure head 4, and enabling a step surface between the column section a and the column section b to be tightly abutted against the end surface of the inner side of the pressure head 4;
step two, assembling each sheet-shaped component forming the splicing type shaping pipe 9 on the periphery of a column section a between the pressure head outer cylinder 1 and the pressure head 4 respectively, and enabling the two axial ends of each sheet-shaped component to be in contact with the end surface of the inner side of the pressure head outer cylinder 1 and the end surface of the inner side of the pressure head 4 respectively;
thirdly, coating adhesives on the outer walls of the pressure head outer cylinder 1 and the pressure head 4 respectively;
step four, sleeving the heat shrinkable tube 10 outside the pressure head outer cylinder 1, the pressure head 4 and the spliced shaping tube 9, and enabling two ends of the heat shrinkable tube 10 to be correspondingly aligned with the outer side end of the pressure head outer cylinder 1 and the outer side end of the pressure head 4 respectively; then, heating the heat shrinkable tube 10 to enable the heat shrinkable tube 10 to shrink to tightly wrap the pressure head outer cylinder 1, the pressure head 4 and the splicing type fixed-shape tube 9, and meanwhile, the outer side end of the pressure head outer cylinder 1 and the outer side end of the pressure head 4 correspondingly slightly extend out of the end part of the heat shrinkable tube 10;
and step five, after the adhesive is completely cured, taking out the positioning column 8 from the inner side of the pressure head outer cylinder 1, then firstly removing the sheet-shaped member d9-4 inwards along the radial direction of the heat shrinkable tube 10, then taking out the sheet-shaped member from the inner side of the pressure head outer cylinder 1, then respectively removing the sheet-shaped member b9-2 and the sheet-shaped member c9-3, then removing the sheet-shaped member a9-1, taking out the sheet-shaped member a, finally assembling the pressure head inner column 2 into the pressure head outer cylinder 1, assembling the sealing bolt 6 into the liquid injection hole 5, and finishing the manufacture of the liquid sample flexible shell.
Example 2
As shown in fig. 4, 5a-5c, this embodiment discloses a flexible enclosure for a liquid sample in another configuration.
Compared with embodiment 1, the flexible shell for liquid samples disclosed in this embodiment is mainly different in that the cross-sectional shape of the heat shrinkable tube 10 disclosed is square, and therefore, the outer wall shape of the indenter outer cylinder 1 and the outer wall shape of the indenter 4 are both square which can be matched with the inner wall of the heat shrinkable tube 10. The liquid sample flexible casing, the connection mode between the indenter outer cylinder 1, the indenter outer cylinder 1 and the heat shrinkable tube 10, the connection relationship between the indenter inner column 2 and the indenter outer cylinder 1, and the respective structural features, the connection mode between the seal bolt 6 and the liquid injection hole 5, and the respective structural features described in this embodiment can be implemented with reference to embodiment 1, except for the differences mentioned above from embodiment 1.
In order to obtain the quadrilateral heat shrinkable tube 10, as shown in fig. 6 and 7, the splicing type shaped tube 9 in the auxiliary tool of this embodiment is different from that in embodiment 1 only in that the outer wall of the splicing type shaped tube 9 has a square shape capable of matching with the inner wall of the heat shrinkable tube 10.
In this embodiment, the liquid sample flexible casing may be finally formed by using the auxiliary tool provided in this embodiment with reference to the method for manufacturing a liquid sample flexible casing described in embodiment 1.
According to the embodiment 1 and the embodiment 2, the liquid samples with different shapes and sizes can be prepared by changing the pressure head 4 and the supporting shape according to the experiment requirements.
Claims (9)
1. A flexible shell for a liquid sample comprises a hollow flexible sample shaping piece, a sample base and a pressure head, wherein the sample base and the pressure head are respectively and correspondingly connected with two ends of the flexible sample shaping piece; the sample base comprises a pressure head outer cylinder and a pressure head inner column; wherein:
the outer cylinder of the pressure head is assembled at one end of the heat shrinkable tube, and the outer wall of the outer cylinder of the pressure head is bonded with the inner wall of the heat shrinkable tube into a whole;
the pressure head is assembled at the other end of the heat shrinkable tube, and the outer wall of the pressure head is bonded with the inner wall of the heat shrinkable tube into a whole;
the pressure head inner column is assembled in the pressure head outer cylinder; at least two matching connecting surfaces are arranged between the outer wall of the pressure head inner column and the inner wall of the pressure head outer cylinder, wherein one matching connecting surface is a thread matching connecting surface, and the other matching connecting surface is a sealing connecting matching surface;
the sealing connection matching surface is positioned on the inner side of the thread matching connection surface, and the inner diameter of the pressure head outer barrel at the position corresponding to the sealing connection matching surface is smaller than the inner diameter of the pressure head outer barrel at the position corresponding to the thread matching connection surface;
the inner wall of the pressure head outer cylinder is arranged in a T shape and comprises an inner wall a, an inner wall b and an inner wall step surface connected between the inner wall a and the inner wall b, and the diameter of the inner wall a is larger than that of the inner wall b;
the outer wall of the pressure head inner column is arranged in a T shape and comprises an outer wall a, an outer wall b and an outer wall step surface connected between the outer wall a and the outer wall b, and the diameter of the outer wall a is larger than that of the outer wall b;
the outer wall a and the inner wall a are fastened in a threaded fit connection mode, the inner wall step surface is abutted against the outer wall step surface, the outer wall b is in clearance fit with the inner wall b, an annular caulking groove a is formed in the outer wall b, a sealing ring a is embedded in the caulking groove a, and the outer circular surface of the sealing ring a is sealed with the inner wall b.
2. The flexible shell of claim 1, wherein the liquid injection hole is T-shaped and comprises a threaded hole and a unthreaded hole, and the inner diameter of the threaded hole is larger than that of the unthreaded hole;
the sealing bolt is arranged in a T shape and comprises a smooth surface column and a threaded column, and the outer diameter of the threaded column is larger than that of the smooth surface column;
the outer edge surface of the threaded column is fixed with the threaded hole in a threaded fit connection mode, and a step surface between the threaded column and the smooth surface column is tightly abutted against a step surface between the threaded hole and the smooth hole; the smooth surface column is in clearance fit with the unthreaded hole, an annular caulking groove b is arranged on the outer wall of the smooth surface column, a sealing ring b is embedded in the caulking groove b, and the outer circular surface of the sealing ring b is sealed with the inner wall of the unthreaded hole.
3. The liquid sample flexible enclosure of claim 1, wherein the heat shrink tubing is a round tube or a polygonal tube.
4. The auxiliary manufacturing tool for the flexible shell of the liquid sample as claimed in claim 1, comprising a supporting tube, wherein the supporting tube comprises a positioning column and a splicing type positioning tube sleeved on the periphery of the positioning column and coaxially arranged with the inner positioning column; wherein:
the positioning column is arranged in a T shape and comprises a column section a and a column section b; the outer diameter of the column section a is matched with the inner diameter of the sealing matching surface of the inner wall of the pressure head outer cylinder, and the outer diameter of the column section b is matched with the inner diameter of the unthreaded hole of the liquid injection hole;
the spliced shaping pipe is formed by splicing a plurality of sheet-shaped members, and the sheet-shaped members are arranged along the circumferential direction of the spliced shaping pipe;
the inner diameter of the spliced type fixed pipe is matched with the outer diameter of the column section a, and the shape of the outer wall of the spliced type fixed pipe is matched with the shape of the inner wall of the heat shrinkable pipe.
5. The auxiliary tool for manufacturing the liquid sample flexible shell according to claim 4, wherein the splicing type shaping pipe is formed by splicing four sheet-shaped members;
the four sheet-shaped components are respectively a sheet-shaped component a, a sheet-shaped component b, a sheet-shaped component c and a sheet-shaped component d;
splicing seams formed between the sheet-shaped member a and the sheet-shaped members b and c are arranged along the radial direction of the splicing type shaped pipe;
the splicing seams formed between the sheet-shaped member d and the sheet-shaped members b and c are parallel to the axial symmetry plane of the sheet-shaped member d.
6. The auxiliary tool for manufacturing the flexible shell of the liquid sample according to claim 4, wherein the inner wall of the splicing type shape-fixing pipe is arranged in a circular shape, and the outer wall of the splicing type shape-fixing pipe is arranged in a circular shape or a polygonal shape.
7. The auxiliary tool for manufacturing the liquid sample flexible shell is characterized in that the axial length of the splicing type shaping pipe is consistent with the distance between the end part of the pressure head outer cylinder and the end part of the pressure head.
8. The auxiliary tool for manufacturing the flexible shell of the liquid sample according to claim 7, wherein the axial length of the column section a is equal to the sum of the axial length of the spliced shaped tube and the axial length of the outer cylinder of the pressure head;
the axial length of the column section b is less than that of the unthreaded hole of the liquid injection hole.
9. The manufacturing method of the liquid sample flexible shell according to claim 1 is completed based on an auxiliary tool, and is characterized in that the auxiliary tool comprises a supporting pipe, the supporting pipe comprises a positioning column and a splicing type positioning pipe which is sleeved on the periphery of the positioning column and is coaxially arranged with the inner positioning column; the positioning column is arranged in a T shape and comprises a column section a and a column section b; the spliced shaping pipe is formed by splicing a sheet-shaped member a, a sheet-shaped member b, a sheet-shaped member c and a sheet-shaped member d, wherein the sheet-shaped member a, the sheet-shaped member b, the sheet-shaped member c and the sheet-shaped member d are arranged along the circumferential direction of the spliced shaping pipe; splicing seams formed between the sheet-shaped member a and the sheet-shaped members b and c are arranged along the radial direction of the splicing type shaped pipe; splicing seams formed between the sheet-shaped component d and the sheet-shaped components b and c are parallel to the axial symmetry plane of the sheet-shaped component d; when the flexible shell of the liquid sample is manufactured, the method comprises the following steps:
step one, a section of column body close to the end part of a column section a is sleeved in a pressure head outer cylinder, and the end part of the column section a is flush with the outer side end part of the pressure head outer cylinder; sleeving the column section b in a unthreaded hole of a liquid injection hole arranged on the pressure head, and enabling a step surface between the column section a and the column section b to be tightly abutted against the end surface of the inner side of the pressure head;
step two, assembling each sheet-shaped component forming the spliced shape-fixing pipe on the periphery of a column section a between the outer cylinder of the pressure head and the pressure head respectively, and enabling the two axial ends of each sheet-shaped component to be in contact with the end surface of the inner side of the outer cylinder of the pressure head and the end surface of the inner side of the pressure head respectively;
step three, coating adhesives on the outer cylinder of the pressure head and the outer wall of the pressure head respectively;
fourthly, sleeving a heat-shrinkable tube on the outer side of the pressure head outer cylinder, the pressure head and the splicing type fixed tube, and heating the heat-shrinkable tube to enable the heat-shrinkable tube to shrink to tightly wrap the pressure head outer cylinder, the pressure head and the splicing type fixed tube;
and step five, after the adhesive is completely cured, taking out the positioning column from the inner side of the outer cylinder of the pressure head, firstly removing the sheet-shaped component d inwards along the radial direction of the heat-shrinkable tube, then taking out the sheet-shaped component d from the inner side of the outer cylinder of the pressure head, then removing the sheet-shaped component b and the sheet-shaped component c respectively, taking out the sheet-shaped component a, then taking out the sheet-shaped component a, finally assembling the inner column of the pressure head into the outer cylinder of the pressure head, assembling the sealing bolt into the liquid injection hole, and finishing the manufacture of the flexible shell of the liquid sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517485.7A CN111693345B (en) | 2020-06-09 | 2020-06-09 | Liquid sample flexible shell and auxiliary tool and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517485.7A CN111693345B (en) | 2020-06-09 | 2020-06-09 | Liquid sample flexible shell and auxiliary tool and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111693345A CN111693345A (en) | 2020-09-22 |
| CN111693345B true CN111693345B (en) | 2021-11-26 |
Family
ID=72479934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010517485.7A Active CN111693345B (en) | 2020-06-09 | 2020-06-09 | Liquid sample flexible shell and auxiliary tool and method for manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111693345B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655470B (en) * | 2015-03-19 | 2017-03-15 | 交通运输部天津水运工程科学研究所 | Unconfined compression test sample preparation device |
| CN206832542U (en) * | 2017-03-10 | 2018-01-02 | 上海大学 | A kind of preparation facilities of the geotechnological three axle samples of Bidirectional-pressure |
| CN107132127B (en) * | 2017-06-27 | 2019-08-06 | 河海大学 | A kind of New Rock conventional triaxial compression test device and test method |
| CN108088757B (en) * | 2018-02-02 | 2019-02-19 | 中国矿业大学 | The three-axis force experimental rig and method of a kind of simulated high-pressure water congeals into ice process |
| CN109531798B (en) * | 2019-01-29 | 2024-02-06 | 福州大学 | Remolded soil triaxial sample demoulding device and demoulding method thereof |
| CN110470085B (en) * | 2019-07-30 | 2020-05-26 | 中国矿业大学 | Triaxial pressure freezing ice making method |
| CN111024479A (en) * | 2019-12-30 | 2020-04-17 | 长春市镨策试验仪器有限责任公司 | Columnar rock sample sealing device and method suitable for true triaxial test |
-
2020
- 2020-06-09 CN CN202010517485.7A patent/CN111693345B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111693345A (en) | 2020-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2416861B1 (en) | End piece for the interior of a chromatography column | |
| FR2467758A1 (en) | FLYWHEEL FOR A MOTOR VEHICLE AND METHOD FOR PRODUCING THE SAME | |
| CN111693345B (en) | Liquid sample flexible shell and auxiliary tool and method for manufacturing same | |
| GB2181507A (en) | Grooved pipe or rod connector | |
| US8215341B2 (en) | Resin pipe with mouthpiece and method of manufacturing the same | |
| PT1407183E (en) | Compressed heat insulation housing | |
| CN216908913U (en) | Tube retention system | |
| CN203103733U (en) | Lead clamping device | |
| CN202162766U (en) | Mechanical vertical cylinder interlocking device assembling tool | |
| JP2002542072A (en) | Apparatus for joining tube ends | |
| CN207830765U (en) | A kind of connection structure of winding pipe | |
| JP3725419B2 (en) | Manufacturing method of plastic pipe connection terminal | |
| JP2005504425A5 (en) | ||
| CN102123841B (en) | Low torque shaft and method of construction thereof | |
| EP3544784B1 (en) | Die for casting junctions of a coating of a pipeline | |
| CN220366131U (en) | Composite heat-insulating sheath straight pipe | |
| US7175406B1 (en) | Active mold apparatus | |
| US6361633B1 (en) | Method for producing a two chamber pressure pack | |
| WO2013107993A2 (en) | Tool assembly, and method for manufacturing a part made of a composite material | |
| CN216265574U (en) | Pipe clamp | |
| JP2011218557A (en) | Double paper tube and method of manufacturing the same | |
| CN102445724A (en) | Precision molding method for cylindrical varied line-space grating | |
| US20240017448A1 (en) | Internal hydroforming method for manufacturing heat pipe wicks | |
| CN107289213B (en) | Connection structure of conical tube, conical tube component and unmanned aerial vehicle frame | |
| TW587966B (en) | Method of making corrugated tubes and device for connecting and forming film assembly of the same |
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 |