CN214539040U - Dual-purpose freeze thawing test box capable of being combined with Hopkinson bar - Google Patents
Dual-purpose freeze thawing test box capable of being combined with Hopkinson bar Download PDFInfo
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- CN214539040U CN214539040U CN202120354876.1U CN202120354876U CN214539040U CN 214539040 U CN214539040 U CN 214539040U CN 202120354876 U CN202120354876 U CN 202120354876U CN 214539040 U CN214539040 U CN 214539040U
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Abstract
The utility model discloses a dual-purpose freezing and thawing test box capable of being combined with Hopkinson bars, which comprises a test box body and mounting holes which are arranged at corresponding positions on two sides of the test box body and respectively penetrate through an incident bar and a transmission bar in the Hopkinson bars; a water tank and a compressor of the freeze-thaw test box are both arranged in the matching box, and a water pipe is arranged on the side surface of the test box body and connected with the water tank; when the heat-insulation plug is used as a common freeze-thaw test box, the mounting hole is sealed by the heat-insulation plug. The dual-purpose freeze-thaw test box capable of being combined with the Hopkinson bar aims to solve the problem of how to ensure that a sample is in a freeze-thaw state during a dynamic loading experiment.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering freeze thawing test case, concretely relates to can combine dual-purpose freeze thawing test case of hopkinson pole.
Background
In geotechnical engineering experiments, before researching the dynamic mechanical properties of rock-soil mass under the action of freeze-thaw cycles, freeze-thaw cycles must be carried out on samples. In the process of freezing and thawing treatment, in order to not destroy the freezing and thawing state of the sample, the strength of the sample can be tested only after one cycle is finished, and when the mechanical property of the sample in the freezing and thawing process needs to be tested in the experiment, the sample is difficult to be ensured to be in the process of freezing or thawing by the existing technical conditions.
In the prior art, the freezing and thawing cycle treatment of the sample is mostly carried out in a freezing and thawing box. The same freezing time and melting time are set in the process, one freezing-thawing cycle is generally completed within 24h, and the melting process is completed as the end of one cycle. After going through the above processes for many times, the freeze-thaw cycle processing of the sample is completed. However, the process of the freeze-thaw cycle and the dynamic mechanical property test of the rock are in two independent devices, and the loading experiment can be carried out only after the freeze-thaw cycle is completed. The sample is exposed to the external environment and has a high melting speed, and the sample is taken out in the freezing or melting process for an experiment, so that the freezing and thawing state of the sample can be damaged quickly, and the experiment is difficult to carry out. If a Hopkinson bar is used for exploring the dynamic mechanical property of a rock in a freeze-thawing process, the existing equipment cannot ensure that a sample is in a real-time freeze-thawing state.
In view of the above, it would be desirable to provide a dual-purpose freeze-thaw test chamber capable of combining with hopkinson bars to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a technical problem be how to ensure that the sample is in freeze thawing state when the dynamic loading experiment.
(II) technical scheme
The utility model provides a dual-purpose freezing and thawing test box capable of being combined with Hopkinson bars, which comprises a test box body and mounting holes which are arranged at corresponding positions on two sides of the test box body and respectively penetrate through an incident bar and a transmission bar in the Hopkinson bars; a water tank and a compressor of the freeze-thaw test box are both arranged in the matching box, and a water pipe is arranged on the side surface of the test box body and connected with the water tank; when the test box is used as a common freeze-thaw test box, the mounting hole is sealed by a heat-insulating plug.
Further, a box door is arranged on the top surface of the test box body and is provided with a door handle.
Furthermore, two opposite side surfaces of the test box body are provided with hanging rings.
Furthermore, a water inlet pipe, a water outlet pipe and a condensate pipe are arranged on the side surface of the test box body; the inlet tube is used for being connected with the extrinsic cycle exit of supporting the case, the outlet pipe be used for with the extrinsic cycle access connection of supporting the case, the condensate pipe is used for getting rid of the inside vapor of experimental box.
Further, the top surface of the test box body is provided with an illuminating device.
Further, a multi-layer detachable hollowed-out platform used for placing samples is arranged in the test box body.
Furthermore, the freeze-thaw test box further comprises refrigeration equipment placed in the test box body, and a heat dissipation port is formed in the refrigeration equipment.
Further, be equipped with the observation window on the experimental box, the observation window is double-deck transparent glass material.
Further, the mounting hole is a round hole.
Further, the width of the test chamber was 490 mm.
(III) advantageous effects
The utility model provides a dual-purpose freeze thawing test box capable of combining Hopkinson bars, which comprises a test box body and mounting holes which are arranged at corresponding positions on two sides of the test box body and respectively penetrate through an incident bar and a transmission bar in the Hopkinson bars; a water tank and a compressor of the freeze-thaw test box are both arranged in the matching box, and a water pipe is arranged on the side surface of the test box body and connected with the water tank; when the heat-insulation plug is used as a common freeze-thaw test box, the mounting hole is sealed by the heat-insulation plug. The water tank, the compressor, the control start and other heavy objects of the dual-purpose freeze-thaw test box are separated from the test box body, the test box body is small and exquisite and light, can be placed on a multifunctional loading device experiment platform and is matched with a Hopkinson bar for use, so that a sample is in a real-time freeze-thaw state when dynamic loading is carried out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of a dual-purpose freezing and thawing test chamber that can be combined with Hopkinson bars according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1;
fig. 3 is a top view of a dual-purpose freeze-thaw test chamber capable of being combined with a hopkinson rod according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along plane B-B of FIG. 3;
fig. 5 is a schematic structural diagram of an open state of a dual-purpose freeze-thaw test chamber capable of being combined with a hopkinson rod according to an embodiment of the present invention;
fig. 6 is a left side view of a dual-purpose freezing and thawing test chamber that can be combined with a hopkinson rod according to an embodiment of the present invention;
fig. 7 is a right side view of a dual-purpose freezing and thawing test chamber that may incorporate hopkinson poles according to an embodiment of the present invention;
fig. 8 is a front view of a kit of a dual-purpose freeze-thaw test chamber that can be combined with a hopkinson rod according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a controller of a dual-purpose freeze-thaw test chamber capable of being combined with a hopkinson rod according to an embodiment of the present invention;
fig. 10 is a rear view of a kit for a split freezing and thawing test chamber that may incorporate hopkinson poles according to an embodiment of the present invention;
fig. 11 is an assembly schematic diagram of a dual-purpose freezing and thawing test box and a kit that can combine with a hopkinson rod according to an embodiment of the present invention.
In the figure:
1-test box body; 2-observation window; 3-mounting holes; 4-a controller; 401-display screen; 402-an indicator light; 403-key press; 404-a switch; 5-liquid adding knob; 6-a box door; 7-a door handle; 8-hoisting rings; 901-external circulation inlet; 902-external circulation outlet; 101-a water inlet pipe; 102-a water outlet pipe; 103-a condensate pipe; 11-a lighting device; 12-a refrigeration device; 13-a heat dissipation port; 14-a vent; 15-a liquid filling port; 16-a water drain valve; 17-a docking plug; 18-external interface; 19-a communication interface; 20-a power line; 21-insulating plug; 22-a hollowed-out platform; 100-Hopkinson bars; 1001-incident rod; 1002-a transmission rod; 200-electronic computer.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention, but are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in the parts, components and connections without departing from the spirit of the invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
According to the embodiment of the utility model, the dual-purpose freezing and thawing test box capable of being combined with the Hopkinson bar is provided, as shown in FIGS. 1-7, comprising a test box body 1 and mounting holes 3 which are arranged at corresponding positions on two sides of the test box body 1 and respectively penetrate through an incident bar 1001 and a transmission bar 1002 in the Hopkinson bar 100; a water tank and a compressor of the freeze-thaw test box are both arranged in the matching box, and a water pipe is arranged on the side surface of the test box body 1 and connected with the water tank; when the test box is used as a common freeze-thaw test box, the mounting hole 3 is sealed by the heat preservation plug 21.
In the above embodiment, the freeze-thaw test chamber is connected with the matching chamber through a pipeline and a line during operation; the freezing and thawing test box matching box is provided with a controller 4; one end of the controller 4 is connected with the test box body 1, and the other end of the controller 4 is connected with the electronic computer; the top surface of the matching box is provided with a liquid adding knob 5 and is communicated with the water tank.
Specifically, the size of the test box can be just placed on the experimental platform of the multi-functional loading system of the hopkinson pole, the positions of the mounting holes 3 on the left side and the right side (in the direction shown in the figure) of the experimental box body 1 are matched with the positions of the pole pieces of the loading device, the mounting holes 3 are preferably round holes, and the diameter of each round hole is slightly larger than the diameter of each incident pole 1001 and the diameter of each projection pole 1002. The mounting hole 3 is sealed by plugging the hole with a thermal insulation material 21.
When the dual-purpose freezing and thawing test box is installed, the distance between the back of the dual-purpose freezing and thawing test box and a wall is more than 30cm, so that the air circulation of the dual-purpose freezing and thawing test box is facilitated; the distribution board is arranged on the right side of the back of the box body and is provided with a protection ground matched with a power plug of the thermostatic bath; in order to prevent the possible occurrence of damp site conditions such as frost formation, condensation, liquid overflow or spray and the risk of electric shock, a special waterproof socket is used and additionally a residual current operated circuit breaker with matched breaking capacity is provided.
When the dual-purpose freezing and thawing test box is connected with an application system, the circulating pipeline is connected after the circulating device and the application system are fixed, and the length of the circulating pipeline is ensured to ensure that the circulating pipeline is not subjected to any mechanical stress to cause danger under the normal operation condition; the working temperature range of the instrument is-40-60 ℃, the temperature and pressure grade of the circulating pipe and the compatibility of the circulating pipe and the liquid heat transfer medium meet the requirements of the operating temperature range, pressure and used liquid of the circulating device; the heat preservation of the hose, the pipe joint and the application system is important for the performance and the safety of the thermostatic bath, and the temperature grade of the heat preservation material is required to meet the maximum operating temperature range of the thermostatic bath; when the external circulation application system is not required to be connected, a proper hose is used for short-circuiting the external circulation interface; the circulator power cord is secured and protected from the circulating piping, preventing direct contact with any high and low temperature parts to which the thermostatic bath and application system may be exposed.
Before starting an instrument, the dual-purpose freeze-thaw test box needs to work by selecting a proper liquid level, wherein the water level is not lower than the heater and exceeds 4/5 of the liquid tank; injecting a proper heat transfer medium into the bath tank to a liquid level suitable for operation, and then connecting an external circulation pipeline; when a low level causes an overheat alarm, the circulation and heating will stop.
The dual-purpose freezing and thawing test box strictly prohibits the circulation pump from being started to work for a long time under the condition of no liquid circulation, and the permanent damage of the circulation pump can be caused by the wrong operation; the water inlet and the water outlet of the thermostatic bath are prevented from being blocked, so that circulation is obstructed, and the same medium is replaced or added in time.
All parts in the test box and the matching box are subjected to rust prevention treatment, so that the equipment is prevented from being corroded in the liquid adding or water inlet and outlet processes.
In some alternative embodiments, the top surface of the test chamber 1 is provided with a chamber door 6 and is provided with a door handle 7. Specifically, the test box 1 is a rectangular box, the box door 6 is opened from right to left from the top surface, and the door handle 7 is arranged on the top surface, so that the opening and closing are facilitated.
In some alternative embodiments, the test case 1 is provided with hanging rings 8 on two opposite sides. Wherein, two rings 7 are respectively arranged below the left side surface and the right side surface (in the direction shown in the figure) of the test box body 1, so that the equipment can be conveniently dismounted by a crane.
Specifically, the back of the matching box is provided with an external circulation inlet 901 and an external circulation outlet 902, the side surface of the test box body 1 is provided with a water inlet pipe 101, a water outlet pipe 102 and a condensate pipe 103, and the side surface of the test box body 1 is provided with the water inlet pipe 101, the water outlet pipe 102 and the condensate pipe 103; the water inlet pipe 101 is used for being connected with an external circulation outlet 902 of the matching box, the water outlet pipe 102 is used for being connected with an external circulation inlet 901 of the matching box, and the condensed water pipe 103 is used for discharging water vapor inside the test box body 1.
Specifically, three water pipes are arranged on the left side (in the direction shown in the figure) of the test box body 1, and a water outlet pipe 102, a water inlet pipe 101 and a condensate pipe 103 are arranged from top to bottom in sequence, and are respectively connected with corresponding water gaps on a matching box during the test. The right side of the test chamber 1 is provided with a docking plug 17 for connection to the controller 4.
In some alternative embodiments, the top surface of the test chamber 1 is provided with an illumination device 11. Wherein, the lighting apparatus can select the LED lamp for use, plays the effect of illumination to in observing sample and camera collection photo.
In some optional embodiments, a plurality of layers of removable hollow platform 22 for placing samples are arranged in the test box 1. Wherein, placing the sample on the hollow platform 22 can make the temperature of the sample change as uniformly as possible.
In some optional embodiments, the freeze-thaw test chamber further comprises a refrigeration device 12 disposed in the test chamber body 1, and the refrigeration device 12 is provided with a heat dissipation opening 13. Specifically, a refrigeration device 12 is arranged opposite to the observation window 2 in the test box body 1 and used for controlling the temperature in the test box body 1; two heat dissipation ports 13 are formed above the refrigeration fittings, so that cold air can be conveniently transferred.
Specifically, as shown in fig. 8 to 10, the kit is opened with a vent hole 14 at a position below the controller 4. Wherein the complete set is provided with a large area of ventilation holes 14 at a position below the controller 4 for facilitating heat dissipation.
Specifically, as shown in fig. 8-11, a controller 4 is disposed at the center of the front surface of the kit, a display 401 for displaying temperature and operating parameters is disposed on the controller 4, an indicator 402 is disposed below the display 401, and the key 403 and the switch 404 are both disposed below the indicator 402; the left side of the controller 4 is provided with an external interface 18 which is connected with a butt plug 17 on the test box body 1; the right side of the controller 4 is provided with a communication interface 19 for connecting an electronic computer 200. The right side of the back of the matching box body is provided with a power line 20 of the matching box body, and the back of the matching box body is also provided with a large-area vent hole 16 which has the same function as the front vent hole.
Specifically, the back of the matching box is provided with a liquid filling opening 15 and a water drain valve 16, the liquid filling opening 15 is connected with the test box body 1, and the water drain valve 16 and the liquid filling opening 15 jointly control the water quantity in the water tank.
In some optional embodiments, an observation window 2 is arranged on the test box body 1, and the observation window 2 is made of double-layer transparent glass. Specifically, the direct front of the test box body 1 is an observation window 2, and transparent glass is used as a block, so that the camera can conveniently shoot while isolating the internal and external temperatures.
The existing freezing and thawing box has single function, can only carry out freezing and thawing cycle treatment on a sample independently, and cannot meet the requirement on the real-time freezing and thawing state of the sample during dynamic loading experiments, so that the dynamic mechanical property experiments of the sample are greatly restricted. After the dual-purpose freeze thawing test box is used, the small and exquisite and light advantages of the freeze thawing test box can be met and carried on a multifunctional loading system experiment platform, and the freeze thawing test box is combined with a Hopkinson bar experiment system for use, so that a sample is in a real-time freeze thawing state, the operability of a rock dynamic mechanical experiment is greatly increased, and the accuracy of an experiment result is also guaranteed.
Meanwhile, the front side of the test box body 1 is provided with an observation window 2, and the inner bin is provided with lighting equipment 11, so that the lighting equipment can be matched with the photographing function of a high-speed camera during the experiment; has all functions of a common freeze thawing box, the temperature range reaches-40 ℃ to 60 ℃, and the freeze thawing box can be used by combining with a Hopkinson bar and can also be used as the common freeze thawing box.
Specifically, the mounting hole 3 is a circular hole, the diameter of the circular hole is 80mm, the diameter of the Hopkinson bar 100 is 50mm, and the multifunctional loading equipment bar can conveniently enter the mounting hole.
In some alternative embodiments, the width of the test chamber 1 is 490 mm. The width of the loading rod is strictly controlled, so that the loading rod can be placed on an experimental platform of a multifunctional loading device to be matched with the loading device for use, the length of the loading rod is 450mm, the standard sample for the experiment of the multifunctional loading device can be placed sufficiently, and the length of the loading rod of the experimental inner bin is ensured to be proper; the mass of the product is strictly controlled not to exceed 100 kg. The freezing and thawing cycle treatment of stone, ice and soil samples can be realized functionally. The circuit of the dual-purpose freezing and thawing test box is two-phase electricity, and the voltage is 220V.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. A dual-purpose freezing and thawing test box capable of being combined with Hopkinson bars is characterized by comprising a test box body (1) and mounting holes (3) which are formed in corresponding positions on two side surfaces of the test box body (1) and respectively penetrate through an incident bar (1001) and a transmission bar (1002) in the Hopkinson bars (100); a water tank and a compressor of the freeze-thaw test box are both arranged in the matching box, and a water pipe is arranged on the side surface of the test box body (1) and connected with the water tank; when the test box is used as a common freeze-thaw test box, the mounting hole (3) is sealed by a heat preservation plug (21).
2. Hopkinson bar combinable dual purpose freeze/thaw test chamber according to claim 1, characterized in that a top surface of the test chamber body (1) is provided with a chamber door (6) and a door handle (7).
3. The split freezing and thawing test chamber combined with the Hopkinson bar as recited in claim 1, wherein the test chamber body (1) is provided with hanging rings (8) on two opposite sides.
4. The split freezing and thawing test chamber combined with the Hopkinson bar as recited in claim 1, wherein a water inlet pipe (101), a water outlet pipe (102) and a condensate pipe (103) are arranged on the side of the test chamber body (1); the water inlet pipe (101) is used for being connected with an external circulation outlet (902) of the matching box, the water outlet pipe (102) is used for being connected with an external circulation inlet (901) of the matching box, and the condensed water pipe (103) is used for discharging water vapor inside the test box body (1).
5. Hopkinson bar combinable dual purpose freeze/thaw test chamber according to claim 1, characterized in that a top surface of the test chamber body (1) is provided with lighting (11).
6. The split freezing and thawing test chamber combined with the Hopkinson bar as recited in claim 1, wherein a plurality of layers of detachable hollowed-out platforms (22) for placing samples are arranged in the test chamber body (1).
7. The split freezing and thawing test chamber capable of being combined with the Hopkinson bar as recited in claim 1, further comprising a refrigeration device (12) placed in the test box body (1), wherein a heat dissipation port (13) is formed in the refrigeration device (12).
8. The split freezing and thawing test chamber capable of being combined with the Hopkinson bar as recited in claim 1, wherein an observation window (2) is arranged on the test chamber body (1), and the observation window (2) is made of double-layer transparent glass.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120354876.1U CN214539040U (en) | 2021-02-08 | 2021-02-08 | Dual-purpose freeze thawing test box capable of being combined with Hopkinson bar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120354876.1U CN214539040U (en) | 2021-02-08 | 2021-02-08 | Dual-purpose freeze thawing test box capable of being combined with Hopkinson bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816350A (en) * | 2021-02-08 | 2021-05-18 | 天津大学 | Dual-purpose freeze thawing test box capable of being combined with Hopkinson bar |
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- 2021-02-08 CN CN202120354876.1U patent/CN214539040U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816350A (en) * | 2021-02-08 | 2021-05-18 | 天津大学 | Dual-purpose freeze thawing test box capable of being combined with Hopkinson bar |
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