CN117129343B - Low-temperature environment building material experimental device - Google Patents
Low-temperature environment building material experimental device Download PDFInfo
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- CN117129343B CN117129343B CN202310995205.7A CN202310995205A CN117129343B CN 117129343 B CN117129343 B CN 117129343B CN 202310995205 A CN202310995205 A CN 202310995205A CN 117129343 B CN117129343 B CN 117129343B
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- 239000004566 building material Substances 0.000 title claims abstract description 79
- 238000012360 testing method Methods 0.000 claims abstract description 100
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000001035 drying Methods 0.000 claims abstract description 12
- 230000017525 heat dissipation Effects 0.000 claims description 37
- 238000001816 cooling Methods 0.000 claims description 23
- 238000007605 air drying Methods 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 15
- 238000003475 lamination Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000004321 preservation Methods 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 210000001503 joint Anatomy 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- 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
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Geometry (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention belongs to the technical field of building material tests, and particularly relates to a low-temperature environment building material test device, which comprises: the top end of one side of the main box body is rotationally connected with a cover body; a test piece placing groove is transversely formed in the top end of the main box body, a sliding block structure is arranged at the bottom end of the test piece placing groove, a building material test piece is placed at the top end of the sliding block structure, an air circulating groove is longitudinally formed in the middle of the test piece placing groove, and a drying mechanism is arranged at the bottom end of the air circulating groove; a temperature control mechanism is arranged in the main box body at the periphery of the test piece placing groove, and the temperature control mechanism adjusts and controls the temperature in the test piece placing groove and the air circulation groove; the top block sliding hole is penetrated in the middle of the cover body, the pressure top block penetrates through the top block sliding hole to be in butt joint with the top end of the building material test piece, and the bottom end of the cover body is fixedly connected with a temperature and humidity sensor. The invention not only can change the temperature of the building material test piece rapidly and accurately, but also can avoid the phenomenon that the building material test piece is frozen on the surface and adhered with other structures.
Description
Technical Field
The invention belongs to the technical field of building material tests, and particularly relates to a low-temperature environment building material test device.
Background
With the progress of the age and the gradual development of scientific technology, civil engineering construction in a low-temperature cryogenic environment is rising. Concrete is a common building material, but is easily degraded by freeze thawing in a low-temperature environment, so that the structure of the concrete is damaged; the high strength steel also has significantly deteriorated plasticity and toughness in a low temperature environment. There is thus a need for an apparatus for performing experiments on building materials in a low temperature environment. The patent CN107478520A discloses a low-temperature environment building material experimental device, wherein the rotation axis bottom of first gear and the rotation axis bottom of two second gears pass through a connecting rod fixed connection, can prevent that the second gear from dropping to make its structure more stable, the result of use is better. After the boss stretches out of the box body, the telescopic rod stretches or contracts according to the width of the building material, so that the hook body is in contact fit with the building material, the building material is clamped, and the building material is prevented from moving. Although this device has realized certain technological effect, but partial building material surface freezes under low temperature environment, can take place the adhesion with other structures, and the space in its device is great simultaneously, can cool down the air when cooling down, and this just has led to a large amount of energy extravagant, has still reduced the speed and the effect of cooling down simultaneously.
Disclosure of Invention
The invention aims to provide a low-temperature environment building material experimental device so as to solve the problems and achieve the purposes of avoiding low-temperature icing adhesion and improving cooling effect.
In order to achieve the above object, the present invention provides the following solutions:
A low temperature environment building material experimental set-up comprising: the top end of one side of the main box body is rotatably connected with a cover body;
The main box body is characterized in that a test piece placing groove is transversely formed in the top end of the main box body, a sliding block structure is arranged at the bottom end of the test piece placing groove, a building material test piece is placed at the top end of the sliding block structure, the building material test piece is matched with the test piece placing groove, an air circulating groove is longitudinally formed in the middle of the test piece placing groove, and a drying mechanism is arranged at the bottom end of the air circulating groove; a temperature control mechanism is arranged in the main box body at the periphery of the test piece placing groove, and the temperature control mechanism adjusts and controls the temperatures in the test piece placing groove and the air circulation groove;
The top block sliding hole is penetrated in the middle of the cover body, the pressure top block penetrates through the top block sliding hole and is in butt joint with the top end of the building material test piece, and the bottom end of the cover body is fixedly connected with a temperature and humidity sensor.
Preferably, the sliding block structure comprises a sliding bottom block, the top end of the sliding bottom block is abutted to one side of the bottom end of the building material test piece, a pressure sensor is fixedly connected to the middle of the sliding bottom block, an inverted convex type sliding block is fixedly connected to the bottom end of the pressure sensor, a sliding groove is formed in the bottom end of the test piece placing groove along the length direction, and the sliding block is in sliding connection with the sliding groove.
Preferably, the temperature control mechanism comprises a compressor, a plurality of cooling laminations are connected in series through a perfusion tube at the output end of the compressor, the cooling laminations are arranged in the part, which is positioned on the periphery side of the test piece placing groove, of the main box body, the input end of the compressor is fixedly communicated with one end of the ventilation and heat dissipation mechanism through a liquid return tube, and a plurality of cooling laminations are fixedly communicated with the other end of the ventilation and heat dissipation mechanism through a backflow tube.
Preferably, the ventilation and heat dissipation mechanism comprises a first air blower, the first air blower is fixedly connected to the inner side of the main box body, an air inlet structure is fixedly communicated with the input end of the first air blower, an air outlet heat dissipation structure is fixedly communicated with the output end of the first air blower, and the air outlet heat dissipation structure is fixedly communicated with the return pipe and the liquid return pipe.
Preferably, the air inlet structure comprises an air inlet cylinder, one end of the air inlet cylinder is fixedly communicated with the input end of the first air blower, one end, far away from the first air blower, of the air inlet cylinder is communicated with the outside, and the inner side of the air inlet cylinder is fixedly connected with a dust filter cylinder along the axial direction.
Preferably, the air outlet heat dissipation structure comprises a heat dissipation cylinder, the heat dissipation cylinder is fixedly communicated with the output end of the first air blower, a plurality of heat dissipation partition plates arranged in an array are fixedly connected to the inner side of the heat dissipation cylinder, a plurality of communicating pipes are arranged on the inner side of the heat dissipation partition plates and are sequentially connected in series, the starting ends of the communicating pipes are fixedly communicated with the return pipe, the tail ends of the communicating pipes are fixedly communicated with the return liquid pipe, the heat dissipation cylinder is far away from one end of the first air blower and is fixedly connected with an air outlet, and the air outlet is communicated with the outside.
Preferably, the drying mechanism comprises a second air blower, and the second air blower is fixedly connected to the inner side of the bottom end of the main box body;
the output end of the second air blower is fixedly communicated with the left end of a second air drying cylinder through a second air return pipe, and the right end of the second air drying cylinder far away from the second air return pipe is fixedly communicated with the right end of the air circulation groove through a first air return pipe;
The second air blower input end is fixedly communicated with the right end of the first air drying cylinder through a second air inlet pipe, and the left end, far away from the second air inlet pipe, of the first air drying cylinder is fixedly communicated with the left end of the air circulation groove through the first air inlet pipe.
Preferably, the two sides of the bottom end of the air circulation groove are respectively and fixedly connected with an air vent plate, the two air vent plates are symmetrically and obliquely arranged, the two air vent plates and the bottom end of the air circulation groove form a turbulent flow cavity, the first air inlet pipe and the first air return pipe are respectively and fixedly communicated with one of the two turbulent flow cavities, and the bottom end of the air vent plate is vertically and fixedly connected with a turbulent flow partition plate.
Preferably, the inside fixedly connected with heat preservation cotton of main tank body, main tank body top fixedly connected with protruding edge, lid bottom fixedly connected with heat preservation, the heat preservation with protruding edge sealing connection.
Preferably, the inside temperature control chip that fixedly connected with of main tank, temperature control chip electric connection has the power cord, temperature control chip respectively with compressor, first air-blower, second air-blower, slider structure electric connection.
Compared with the prior art, the invention has the following advantages and technical effects:
The setting of air circulation groove can make things convenient for building material test piece to be placed the test piece standing groove inboard, and the setting of test piece standing groove and building material test piece assorted, can reduce energy consumption like this for the temperature variation on the test piece standing groove lateral wall influences the temperature variation of building material test piece fast, and the building material test piece should avoid when placing with test piece standing groove lateral wall direct contact, lets the building material test piece rely on the slider structure top to support entirely. Simultaneously still set up drying mechanism, be the building material test piece surface and the air in the device and carry out the predrying before the cooling earlier, prevent that building material test piece and test piece standing groove's lateral wall from contacting because of the mishandling to lead to the moisture to freeze and take place the adhesion, influence the data of experiment.
The structure of the invention can conveniently and accurately carry out the pressure break test of the building material in a low-temperature environment, thereby not only conveniently, rapidly and accurately changing the temperature of the building material test piece, but also effectively avoiding the phenomenon that the surface of the building material test piece is frozen and adhered with other structures, and further affecting the accuracy of the pressure detection.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention after the test piece is installed;
FIG. 3 is a schematic diagram of a ventilation and heat dissipation mechanism and a temperature control mechanism;
FIG. 4 is a schematic cross-sectional view of the main casing;
fig. 5 is a front view of a building material test piece.
Reference numerals: 1. a main case; 2. a cover body; 3. a power line; 4. a ventilation and heat dissipation mechanism; 5. a temperature control mechanism; 6. a building material test piece; 9. a drying mechanism; 10. a sliding bottom block; 11. thermal insulation cotton; 101. a convex edge; 102. a test piece placing groove; 103. an air circulation tank; 201. a heat preservation layer; 202. a top block slide hole; 501. a first blower; 502. an air inlet cylinder; 503. a dust filter cartridge; 504. a heat dissipation cylinder; 505. a heat-dissipating partition; 506. an air outlet; 507. a compressor; 508. cooling lamination; 509. a return pipe; 510. a liquid return pipe; 901. an aeration orifice plate; 902. a turbulent flow separator; 903. a first air inlet pipe; 904. a first air drying cylinder; 905. a second blower; 906. a second air drying cylinder; 907. a first muffler; 908. a second air inlet pipe; 909. a second muffler; 1001. a pressure sensor; 1002. a slide block; 601. slotting; 602. a clip-on meter; 603. and fixing the clamping piece.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1 to 5, the present invention provides an experimental apparatus for a low temperature environment building material, comprising: the main box body 1, the top end of one side of the main box body 1 is rotatably connected with a cover body 2;
A test piece placing groove 102 is transversely formed in the top end of the main box body 1, a sliding block structure is arranged at the bottom end of the test piece placing groove 102, a building material test piece 6 is placed at the top end of the sliding block structure, the building material test piece 6 is matched with the test piece placing groove 102, an air circulation groove 103 is longitudinally formed in the middle of the test piece placing groove 102, and a drying mechanism 9 is arranged at the bottom end of the air circulation groove 103; a temperature control mechanism 5 is arranged in the main box body 1 at the periphery of the test piece placing groove 102, and the temperature control mechanism 5 regulates and controls the temperatures in the test piece placing groove 102 and the air circulation groove 103;
The middle part of the cover body 2 is penetrated with a top block sliding hole 202, the pressure top block penetrates through the top block sliding hole 202 to be abutted with the top end of the building material test piece 6, and the bottom end of the cover body 2 is fixedly connected with a temperature and humidity sensor.
The setting of air circulation groove 103 can make things convenient for building material test piece 6 to be placed the test piece standing groove 102 inboard, and the setting of test piece standing groove 102 and building material test piece 6 assorted, can reduce energy consumption like this for temperature variation on the test piece standing groove 102 lateral wall influences the temperature variation of building material test piece 6 fast, and building material test piece 6 should avoid when placing with test piece standing groove 102 lateral wall direct contact, lets building material test piece 6 rely on the slider structure top to support entirely. Meanwhile, a drying mechanism 9 is further arranged, and air on the surface of the building material test piece 6 and in the device is pre-dried before cooling, so that the building material test piece 6 is prevented from being contacted with the side wall of the test piece placing groove 102 due to incorrect operation, water is prevented from being frozen to adhere, and experimental data are affected.
The structure of the invention can conveniently and accurately carry out the pressure break test of the building material in a low-temperature environment, thereby not only conveniently, rapidly and accurately changing the temperature of the building material test piece 6, but also effectively avoiding the phenomenon that the surface of the building material test piece 6 is frozen and adhered with other structures, and further affecting the accuracy of the pressure detection.
Further optimizing scheme, the slider structure includes slip bottom block 10, and slip bottom block 10 top and building material test piece 6 bottom one side butt, slip bottom block 10 middle part fixedly connected with pressure sensor 1001, pressure sensor 1001 bottom fixedly connected with "protruding" slider 1002 of falling, the spout has been seted up along length direction to test piece standing groove 102 bottom, slider 1002 and spout sliding connection.
The inverted "convex" type slider 1002 is designed such that the sliding bottom block 10 can be easily taken out, so that the pressure sensor 1001 is easily maintained, and the pressure sensor 1001 is easily damaged due to the large mass of the building material test piece 6. The top end of the sliding bottom block 10 is a semi-cylindrical shape, and the contact surface between the building material test piece 6 and the sliding bottom block 10 can be narrower due to the shape, and meanwhile, certain supporting stability is provided.
Further optimizing scheme, control by temperature change mechanism 5 includes compressor 507, and the compressor 507 output has a plurality of cooling lamination 508 through the transfer line series connection, and cooling lamination 508 locates main tank 1 and is located in the part of test piece standing groove 102 week side, and the compressor 507 input passes through liquid return pipe 510 and ventilation cooling mechanism 4 one end fixed intercommunication, and a plurality of cooling lamination 508 passes through back flow 509 and ventilation cooling mechanism 4 other end fixed intercommunication.
The pipeline of the temperature control mechanism 5 is also provided with a plurality of valves, and the structures such as capillaries and the like assist in completing the cooling operation. The number of cooling laminations 508 is preferably four, and the test piece standing groove 102 and the air circulation groove 103 just form a cross structure, and four cooling laminations 508 are distributed in the main box body 1 in each quadrant of the cross structure, can cool from four directions, and the cooling effect is better.
Further optimizing scheme, ventilation cooling mechanism 4 includes first air-blower 501, and first air-blower 501 fixed connection is inboard at main tank body 1, and the fixed intercommunication of the input of first air-blower 501 has the inlet structure, and the fixed intercommunication of the output of first air-blower 501 has the heat radiation structure that gives vent to anger, and the heat radiation structure that gives vent to anger and back flow 509, the fixed intercommunication of liquid return 510. The air outlet heat dissipation structure is used for dissipating heat and cooling the vaporized circulating liquid, and the air inlet structure is used for providing clean air.
Further optimizing scheme, the inlet structure includes inlet tube 502, inlet tube 502 one end and the input fixed intercommunication of first air-blower 501, and inlet tube 502 keeps away from the one end and the external intercommunication of first air-blower 501, and inlet tube 502 inboard is along axial fixedly connected with dust cartridge filter 503.
The dust filter cartridge 503 is a common filter cartridge, and filters dust to prevent dust from accumulating inside the heat radiation tube 504 to affect the heat radiation effect, and ensures clean air entering the heat radiation tube 504.
Further optimizing scheme, the heat radiation structure of giving vent to anger includes a heat dissipation section of thick bamboo 504, the fixed intercommunication of the output of a heat dissipation section of thick bamboo 504 and first air-blower 501, the inboard fixedly connected with a plurality of array arrangement's of heat dissipation section of thick bamboo 504 heat dissipation baffle 505 is equipped with communicating pipe, a plurality of communicating pipe is established ties in proper order, the initiating terminal and the back flow 509 fixed intercommunication of a plurality of communicating pipe, the terminal and the liquid return 510 fixed intercommunication of a plurality of communicating pipe, the one end fixedly connected with gas outlet 506 of a heat dissipation section of thick bamboo 504 keep away from a first air-blower 501, gas outlet 506 and external intercommunication.
The heat dissipation separator 505 is preferably a copper plate, and the communicating tube in the heat dissipation separator 505 generates a large amount of heat, and at this time, the heat on the heat dissipation separator 505 is blown away by the first blower 501, so that the medium in the communicating tube is cooled.
In a further optimized scheme, the drying mechanism 9 comprises a second air blower 905, and the second air blower 905 is fixedly connected to the inner side of the bottom end of the main box body 1;
The output end of the second air blower 905 is fixedly communicated with the left end of the second air drying cylinder 906 through a second air return pipe 909, and the right end of the second air drying cylinder 906 far away from the second air return pipe 909 is fixedly communicated with the right end of the air circulation tank 103 through a first air return pipe 907;
The input end of the second blower 905 is fixedly communicated with the right end of the first air drying cylinder 904 through the second air inlet pipe 908, and the left end of the first air drying cylinder 904 far away from the second air inlet pipe 908 is fixedly communicated with the left end of the air circulation groove 103 through the first air inlet pipe 903.
When the second air blower 905 works, the first air drying cylinder 904 and the second air drying cylinder 906 can continuously absorb moisture in the air, so that the moisture of the air in the device is reduced, and the drying of the air is ensured.
Further optimizing scheme, air circulation groove 103 bottom both sides are fixedly connected with aeration orifice 901 respectively, and two aeration orifice 901 symmetry slant sets up, and two aeration orifice 901 form turbulent flow chamber with air circulation groove 103 bottom, and first intake pipe 903, first muffler 907 are fixed intercommunication with one of them in two turbulent flow chamber respectively, and the vertical fixedly connected with turbulent flow baffle 902 in aeration orifice 901 bottom.
The turbulent flow baffle 902 disturbs the flow direction of the air blown out from the first air inlet pipe 903, ensures that the air can be uniformly blown out from the holes of the vent plate 901, and avoids the formation of quicker whirlwind in the air circulation groove 103, thereby affecting the temperature of the peripheral side of the building material test piece 6.
Further optimizing scheme, the inboard fixedly connected with heat preservation cotton 11 of main tank body 1, main tank body 1 top fixedly connected with protruding edge 101, lid 2 bottom fixedly connected with heat preservation 201, heat preservation 201 and protruding edge 101 sealing connection. The arrangement of the heat insulating layer 201 and the heat insulating cotton 11 reduces the external interference to the temperature inside the device.
Further optimizing scheme, the inboard fixedly connected with control by temperature change chip of main tank body 1, control by temperature change chip electric connection have power cord 3, control by temperature change chip respectively with compressor 507, first air-blower 501, second air-blower 905, slider structure electric connection. The temperature control chip is electrically connected with the compressor 507 to control the operation efficiency of the compressor 507, so that the temperature condition is controlled, the air speed can be controlled by electrically connecting the temperature control chip with the first air blower 501 and the second air blower 905, the speed of the first air blower 501 influences the heat dissipation efficiency, and the speed of the second air blower 905 influences the drying speed. The temperature control chip is also electrically connected with the pressure sensor 1001 in the slider structure, can detect the quality and the force application condition of the placed building material test piece 6, and is electrically connected with the outside through the power line 3, so as to provide accurate data for an external computer.
When the device is used for measurement, the reading measurement is mainly realized through the clamp type detector 602 fixedly connected to the bottom end of the building material test piece 6, and the main working principle is as follows: the bottom end of the building material test piece 6 is provided with a slot 601, the setting of the slot 601 ensures that the building material test piece 6 can be broken along the central line after being pressed, the clamp type detector 602 clamps the bottom end of the building material test piece 6 through two fixing clamping pieces 603, the top ends of the two fixing clamping pieces 603 are respectively and fixedly connected with the parts of the building material test piece 6 positioned at two sides of the slot 601, when the building material test piece 6 is positioned to be broken along the slot 601, the fixing clamping pieces 603 do not clamp the clamp type detector 602 any more, at the moment, the clamp type detector 602 sends out a signal, and the signal can be detected through an external computer, and at the moment, the pressure applied to the building material test piece 6 is the breaking pressure to be detected of the building material test piece 6.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. A low temperature environment building material experimental apparatus, comprising: the main box body (1), the top end of one side of the main box body (1) is rotationally connected with a cover body (2);
The novel test device is characterized in that a test piece placing groove (102) is transversely formed in the top end of the main box body (1), a sliding block structure is arranged at the bottom end of the test piece placing groove (102), a building material test piece (6) is placed at the top end of the sliding block structure, the building material test piece (6) is matched with the test piece placing groove (102), a slot (601) is formed in the bottom end of the building material test piece (6), a clamp type detector (602) is clamped at the bottom end of the building material test piece (6) through two fixing clamping pieces (603), and the top ends of the two fixing clamping pieces (603) are respectively and fixedly connected to the parts, located on two sides of the slot (601), of the building material test piece (6);
An air circulation groove (103) is longitudinally formed in the middle of the test piece placing groove (102), and a drying mechanism (9) is arranged at the bottom end of the air circulation groove (103); a temperature control mechanism (5) is arranged in the main box body (1) at the periphery of the test piece placing groove (102), and the temperature in the test piece placing groove (102) and the temperature in the air circulation groove (103) are regulated and controlled by the temperature control mechanism (5);
A top block sliding hole (202) is formed in the middle of the cover body (2) in a penetrating manner, a pressure top block passes through the top block sliding hole (202) and is abutted to the top end of the building material test piece (6), and a temperature and humidity sensor is fixedly connected to the bottom end of the cover body (2);
The sliding block structure comprises a sliding bottom block (10), the top end of the sliding bottom block (10) is abutted to one side of the bottom end of a building material test piece (6), a pressure sensor (1001) is fixedly connected to the middle of the sliding bottom block (10), an inverted convex sliding block (1002) is fixedly connected to the bottom end of the pressure sensor (1001), a sliding groove is formed in the bottom end of a test piece placing groove (102) along the length direction, and the sliding block (1002) is in sliding connection with the sliding groove.
2. The low-temperature environment building material experimental device according to claim 1, wherein the temperature control mechanism (5) comprises a compressor (507), the output end of the compressor (507) is connected in series with a plurality of cooling laminations (508) through a liquid conveying pipe, the cooling laminations (508) are arranged in the part, located on the periphery side of the test piece placing groove (102), of the main box body (1), the input end of the compressor (507) is fixedly communicated with one end of the ventilation and heat dissipation mechanism (4) through a liquid return pipe (510), and the cooling laminations (508) are fixedly communicated with the other end of the ventilation and heat dissipation mechanism (4) through a backflow pipe (509).
3. The low-temperature environment building material experimental device according to claim 2, wherein the ventilation and heat dissipation mechanism (4) comprises a first air blower (501), the first air blower (501) is fixedly connected to the inner side of the main box body (1), an air inlet structure is fixedly communicated with the input end of the first air blower (501), an air outlet heat dissipation structure is fixedly communicated with the output end of the first air blower (501), and the air outlet heat dissipation structure is fixedly communicated with the return pipe (509) and the liquid return pipe (510).
4. A low-temperature environment building material experimental device according to claim 3, wherein the air inlet structure comprises an air inlet cylinder (502), one end of the air inlet cylinder (502) is fixedly communicated with the input end of the first air blower (501), one end of the air inlet cylinder (502) away from the first air blower (501) is communicated with the outside, and a dust filter cylinder (503) is fixedly connected to the inner side of the air inlet cylinder (502) along the axial direction.
5. The low-temperature environment building material experimental device according to claim 4, wherein the air outlet heat dissipation structure comprises a heat dissipation barrel (504), the heat dissipation barrel (504) is fixedly communicated with the output end of the first air blower (501), a plurality of heat dissipation partition boards (505) arranged in an array are fixedly connected to the inner side of the heat dissipation barrel (504), communicating pipes are arranged on the inner side of the heat dissipation partition boards (505), a plurality of communicating pipes are sequentially connected in series, the initial ends of the communicating pipes are fixedly communicated with the return pipe (509), the tail ends of the communicating pipes are fixedly communicated with the return pipe (510), one end, far away from the first air blower (501), of the heat dissipation barrel (504) is fixedly connected with an air outlet (506), and the air outlet (506) is communicated with the outside.
6. The low-temperature environment building material experimental device according to claim 5, wherein the drying mechanism (9) comprises a second air blower (905), and the second air blower (905) is fixedly connected to the inner side of the bottom end of the main box body (1);
The output end of the second air blower (905) is fixedly communicated with the left end of a second air drying cylinder (906) through a second air return pipe (909), and the right end of the second air drying cylinder (906) far away from the second air return pipe (909) is fixedly communicated with the right end of the air circulation groove (103) through a first air return pipe (907);
the input end of the second air blower (905) is fixedly communicated with the right end of the first air drying cylinder (904) through a second air inlet pipe (908), and the left end of the first air drying cylinder (904) away from the second air inlet pipe (908) is fixedly communicated with the left end of the air circulation groove (103) through a first air inlet pipe (903).
7. The low-temperature environment building material experimental device according to claim 6, wherein two sides of the bottom end of the air circulation groove (103) are respectively and fixedly connected with ventilation pore plates (901), the two ventilation pore plates (901) are symmetrically and obliquely arranged, turbulent flow cavities are formed by the two ventilation pore plates (901) and the bottom end of the air circulation groove (103), the first air inlet pipe (903) and the first air return pipe (907) are respectively and fixedly communicated with one of the two turbulent flow cavities, and turbulent flow partition plates (902) are vertically and fixedly connected to the bottom end of the ventilation pore plates (901).
8. The low-temperature environment building material experimental device according to claim 1, wherein heat preservation cotton (11) is fixedly connected to the inner side of the main box body (1), a convex edge (101) is fixedly connected to the top end of the main box body (1), a heat preservation layer (201) is fixedly connected to the bottom end of the cover body (2), and the heat preservation layer (201) is in sealing connection with the convex edge (101).
9. The low-temperature environment building material experimental device according to claim 5, wherein a temperature control chip is fixedly connected to the inner side of the main box body (1), the temperature control chip is electrically connected to a power line (3), and the temperature control chip is electrically connected to the compressor (507), the first blower (501), the second blower (905) and the slide block structure respectively.
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