CN212072369U - Novel multi-functional integral type concrete test block curing box - Google Patents
Novel multi-functional integral type concrete test block curing box Download PDFInfo
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- CN212072369U CN212072369U CN202020520639.3U CN202020520639U CN212072369U CN 212072369 U CN212072369 U CN 212072369U CN 202020520639 U CN202020520639 U CN 202020520639U CN 212072369 U CN212072369 U CN 212072369U
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- 238000012423 maintenance Methods 0.000 claims abstract description 30
- 238000009835 boiling Methods 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 13
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- 238000001723 curing Methods 0.000 description 58
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Abstract
The utility model discloses a novel multi-functional integral type concrete test block curing box, including box, LED display screen, disk heating pipe, level sensor, intercommunication glass pipe, cooling fan, frame plate, PLC programmable controller, steam generator, the box top set up a big case lid, the left surface of box is equipped with the outlet valve and communicates the glass pipe, bottom in the box is equipped with the disk heating pipe, the support leg frame plate top is equipped with a slice frame plate, be equipped with thermocouple sensor and temperature and humidity sensor in the box, the back of box is equipped with the controller guard box, LED display screen, disk heating pipe, level sensor, cooling fan, thermocouple sensor, temperature and humidity sensor, timer module and steam generator respectively with PLC programmable controller electric connection. The utility model discloses integrate traditional standard maintenance, steam curing and three kinds of maintenance modes of boiling water maintenance together, realized the integration of different maintenance functions, provide very big facility for the scientific research personnel in concrete material field.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a novel multi-functional integral type concrete test block curing box belongs to concrete curing equipment technical field.
[ background of the invention ]
In the scientific research field of concrete materials, a series of tests such as strength, impermeability, durability, freeze-thaw resistance circulation and the like are often required to be carried out on a concrete test block, and the concrete test block can reach the design strength only by being maintained under certain conditions and can be subjected to related tests in the later period. The concrete test block is maintained mainly for creating conditions to meet the requirement of cement to perform full hydration reaction, accelerating concrete hardening to meet the requirement of designed strength within a specified time, and preventing abnormal shrinkage, cracks and other phenomena caused by natural factors such as drying, cold and the like after concrete forming.
Curing temperatures have a large impact on the rate of development of early properties of concrete. Generally, the higher the curing temperature, the faster the strength develops. Studies have shown that when the temperature is below a certain limit, the cement hydration reaction will not proceed and the concrete strength stops developing, which is usually around-10 ℃. In fact, at temperatures below 0 ℃, the moisture in the concrete already starts to freeze, which will lead to freezing damage of the concrete. Meanwhile, the environment of the early concrete does not keep sufficient humidity, so that a large amount of moisture in the concrete can be evaporated, on one hand, the test block influences the continuous hydration of the cement due to drying and dehydration, and on the other hand, the drying and shrinkage of the concrete are increased, so that the concrete bears the tensile stress caused by shrinkage in a low-strength state, and the early cracks of the concrete are caused. In order to make the prepared concrete have more excellent performance and prevent abnormal shrinkage, cracks and other phenomena caused by the influence of factors such as drying, freezing and the like, the maintenance modes adopted in laboratories at present are standard maintenance, steam maintenance, boiling water maintenance and the like.
Wherein, the standard curing refers to curing the concrete test block in an environment with the temperature of 20 +/-3 ℃ and the relative humidity of more than 90 percent. When no standard curing chamber exists, the concrete test piece can be cured in the non-flowing water with the temperature of 20 +/-3 ℃. The laboratory is generally provided with a special standard curing room, and although the laboratory has the advantages of large curing amount, low cost and the like, the laboratory cannot well meet the test requirements due to the limitation of borrowing time periods and different research requirements. At present, the concrete strength evaluation is mainly based on 28d standard curing strength, but the concrete strength evaluation has the disadvantages of long time consumption, large influence by forming and curing environment fluctuation and hysteresis for guidance of concrete mixing ratio adjustment.
Steam curing is a curing method in which steam is used as a heat medium to accelerate the hardening of concrete. The laboratory is generally steam-cured by placing the test block in a special steam box and heating the water to obtain hot steam. The steam curing can ensure the temperature and humidity requirements of the concrete in the early hydration process, accelerate the hydration of the cement and enable the concrete to reach the standard curing strength of 28d relatively quickly. Compared with standard curing, although the hydration speed of cement is accelerated by steam curing, curing equipment has the problems of single function, no consideration for reasonable internal arrangement, low intelligent degree and the like, and causes certain inconvenience for practical application.
The boiling water curing is to place the concrete test block in a water tank, firstly heat the water to 45 ℃ at the heating rate of 5 ℃/min, keep the temperature for 12 hours at a constant temperature, then boil the water at the heating rate of 11 ℃/min, keep the temperature for 6 hours at a constant temperature, and finally turn the temperature to the room temperature at the cooling rate of 6.7 ℃/H. Compared with standard curing and steam curing, the boiling water curing greatly shortens the time for the concrete test piece to reach 28d strength, but when the existing curing equipment is used for boiling water curing, the heating and cooling rates of a water body are often required to be controlled, the heating and cooling rates of the traditional curing box cannot be controlled manually, the heating box often has fixed heating power during heating, cannot be changed manually, and cannot meet the comparison tests of different heating rates; generally, the cover is opened for natural cooling during cooling, but the cooling rate is changed all the time along with the change of seasons, so that the test result with a longer period has certain influence.
[ Utility model ] content
The utility model aims to provide a novel multi-functional integral type concrete test block maintenance case with the integration of standard maintenance, steam curing, 3 maintenance modes of boiling water maintenance to the defect of existing equipment with not enough can select different maintenance modes according to the maintenance demand of difference, multiple functional, safe convenient.
In order to solve the problems existing in the background technology, the utility model provides a novel multifunctional integrated concrete test block curing box, which comprises a handle, a small box cover, a large box cover, a box body support, an LED display screen, a controller protection box, a disc type heating pipe, a liquid level sensor, a drain valve, a communication glass pipe, a cooling fan, a frame plate supporting leg, a frame plate clamping leg, a frame plate handle, a thermocouple sensor, a temperature and humidity sensor, a timer module, a PLC programmable controller, a steam generator, a steam overflow pipe, a water suction pipe and a liquid overflow hole, wherein the box body is a hollow cuboid structure with an open top, the box body support is arranged around the bottom ring of the box body to ensure the integral stability, the top of the box body is provided with the large box cover to play a role of shielding and heat preservation, the center position of the upper surface of the large box cover is provided, the temperature reduction device is characterized in that a temperature reduction fan is arranged at the lower part of the small box cover at the center of the large box cover to control the temperature reduction rate, handles which are symmetrically distributed are arranged on two sides of the upper surface of the large box cover to facilitate opening of the large box cover, an LED display screen is arranged on the front surface of the box body, a drain valve and a communication glass tube are arranged on the left side surface of the box body, the drain valve and the communication glass tube are both communicated with the inside of the box body, frame plate clamping legs which are symmetrically distributed at the front and back are arranged on the inner wall of the box body, a frame plate is arranged on the upper surface of each frame plate clamping leg, disc type heating tubes are arranged at the bottom inside the box body, a frame plate supporting leg is arranged between the disc type heating tubes at the bottom inside the box body, a frame plate is arranged at the top of the frame plate supporting leg, a liquid overflow, the back of box be equipped with the controller guard box, controller guard box inside be equipped with timer module, PLC programmable controller and steam generator, steam generator pass through steam overflow pipe and the inside UNICOM of suction pipe and box, LED display screen, disk heating pipe, level sensor, cooling fan, thermocouple sensor, temperature and humidity sensor, timer module and steam generator respectively with PLC programmable controller electric connection.
LED display screen left side set up maintenance mode and set for the plate, 3 kinds of maintenance modes are respectively: standard curing, steam curing and boiling water curing, and users can select different curing modes according to requirements; temperature and humidity display and setting plates are arranged in the middle of the LED display screen, so that users can set different temperatures and humidities according to needs and can set a heat preservation and moisture preservation mode; the right side of the LED display screen is provided with a time display and setting plate, and users can set different curing times according to needs.
The liquid level sensor is used for detecting the water level inside the box body, and the disc type heating pipe is prevented from being dried due to the fact that the water level is too low.
As a preferred technical scheme of the utility model, the rear position of the big box cover contacting with the box body is hinged through a hinge, and the big box cover can be conveniently opened by directly lifting backwards when needing to be opened; and the position that big case lid and box contacted is equipped with the sealing washer, isolated external environment in order to ensure that internal environment is relatively stable.
As an optimized technical proposal of the utility model, the liquid level sensor adopts a CQ33-N21PBU2 type capacitance normally closed liquid level sensor.
As an optimized technical scheme of the utility model, the cooling fan adopt DA12025B12L type cooling fan, low cost, the radiating effect is good.
As an optimized technical proposal of the utility model, the thermocouple sensor adopts a pressure spring thermocouple-E type thermocouple sensor for measuring the water temperature under the boiling water curing mode, and the temperature measuring range is 0-400 ℃.
As an optimized technical scheme of the utility model, temperature and humidity sensor adopt SHT20 type temperature and humidity sensor for temperature and humidity in the box under survey standard and the steam maintenance mode, the working medium temperature: -40-125 ℃, precision: plus or minus 0.3 ℃; humidity of working environment: 0-100% RH, precision: 3 percent.
As a preferred technical scheme of the utility model, the PLC programmable controller adopt CPU224XP-AC/DC/RLY type module, can support 7 extension modules to the maximum.
As the utility model discloses a preferred technical scheme, the bottom exit of steam overflow pipe be located the box middle part, the bottom exit of the pipe that absorbs water is located the box bottom, has ensured that steam generator absorbs water smoothly from the box, has guaranteed the release of steam again.
Compared with the prior art, the beneficial effects of the utility model are that: the traditional separated curing modes such as standard curing, steam curing, boiling water curing and the like are integrated into a multifunctional curing box through the liquid crystal display screen and the PLC, the curing function integration is realized by selecting different curing modes, and the inconvenience that different curing equipment is selected according to different curing modes during concrete curing is avoided; the cooling fan and the PLC are arranged, so that the cooling rate of the temperature in the control box is controllable, and the defect of poor accuracy of a test result caused by uncontrollable natural cooling rate in the traditional boiling water maintenance mode is effectively overcome; the double-layer frame plate enables more concrete test blocks to be placed in the curing box, and the frame plate is provided with the liquid overflow hole, so that a water body can be in close contact with the concrete test blocks in a boiling water curing mode; the arrangement of the bottom layer frame plate separates the disc type heating pipe from the concrete test block, so that the disc type heating pipe is prevented from being damaged due to compression and collision of the test block, and the service life of the maintenance box is prolonged; the water in the curing box can conveniently flow out by arranging the drain valve, so that the phenomenon of scale deposit at the bottom of the box body is effectively avoided, the corrosion of chloride, sulfate and the like in the scale to the box body and the disc-type heating pipe is further prevented, and the service life of the curing box is prolonged; through the arrangement of the communicated glass tube and the capacitance type normally closed liquid level sensor, the water level in the box body can be checked in time under the condition that the maintenance box cover is not opened, and under the condition that the water level is too low, the capacitance type normally closed liquid level sensor can emit dripping sound to remind a user of adding water, so that the condition that the water is dried without people is avoided, and the maintenance equipment is protected; the temperature and humidity in the curing box can be monitored at any time by arranging the thermocouple sensor and the temperature and humidity sensor, and the temperature and humidity in the box body can be automatically adjusted through the PLC according to a set curing mode.
[ description of the drawings ]
Fig. 1 is a schematic view of the front three-dimensional structure of the present invention.
Fig. 2 is a schematic view of the back three-dimensional structure of the present invention.
Fig. 3 is a right side cross-sectional view of the present invention.
Fig. 4 is a schematic perspective view of the internal structure of the present invention.
Fig. 5 is a schematic structural view of the cooling fan of the present invention.
Fig. 6 is a schematic perspective view of the frame plate of the present invention.
Fig. 7 is a schematic diagram of the circuit principle of the present invention.
Description of reference numerals: 1. the temperature and humidity sensor comprises a handle, a small box cover, a large box cover, a box body support, an LED display screen, a controller protection box, a disc type heating pipe, a liquid level sensor, a water drain valve, a glass pipe, a cooling fan, a temperature reducing fan, a frame plate supporting leg, a frame plate clamping leg, a frame plate handle, a thermocouple sensor, a temperature and humidity sensor, a timer module, a PLC (programmable logic controller) 20, a steam generator, a steam overflow pipe, a water suction pipe and a liquid overflow hole, wherein the handle is 2, the small box cover is 3, the large box cover is 4, the box body is 5, the box body support is 6, the LED display screen.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "left", "center", "right", "upper" and "lower" indicate orientations or positions based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 to 7, the following technical solutions are adopted in the present embodiment: a novel multifunctional integrated concrete test block curing box comprises a handle 1, a small box cover 2, a large box cover 3, a box body 4, a box body support 5, an LED display screen 6, a controller protection box 7, a disc type heating pipe 8, a liquid level sensor 9, a drain valve 10, a communication glass pipe 11, a cooling fan 12, a frame plate supporting leg 13, a frame plate 14, a frame plate clamping leg 15, a frame plate handle 16, a thermocouple sensor 17, a temperature and humidity sensor 18, a timer module 19, a PLC programmable controller 20, a steam generator 21, a steam overflow pipe 22, a water suction pipe 23 and a liquid overflow hole 24, wherein the box body 4 is of a hollow structure with an open top, the box body support 5 is arranged on the periphery of the bottom of the cuboid 4 to ensure the integral stability, the top of the box body 4 is provided with the large box cover 3 to play a role of shielding and heat preservation, the small box cover 2 is arranged at the center of the upper surface of the large box cover 3, the central position of the big box cover 3 and the lower part of the small box cover 2 are provided with cooling fans 12 to control the cooling speed, the two sides of the upper surface of the big box cover 3 are provided with handles 1 which are symmetrically distributed so as to open the big box cover 3, the front surface of the box body 4 is provided with an LED display screen 6, the left side surface of the box body 4 is provided with a drain valve 10 and a communicating glass tube 11, the drain valve 10 and the communicating glass tube 11 are both communicated with the inside of the box body 4, the inner wall of the box body 4 is provided with frame plate clamping legs 15 which are symmetrically distributed front and back, the upper surface of the frame plate clamping leg 15 is provided with a frame plate 14, the bottom inside the box body 4 is provided with a disc type heating pipe 8, a frame plate supporting leg 13 is arranged between the disc type heating pipes 8 at the bottom inside the box body 4, the top of the frame plate supporting leg 13 is provided with a frame plate 14, the frame plate 14 is provided, the temperature and humidity control device is characterized in that a thermocouple sensor 17 and a temperature and humidity sensor 18 are arranged in the box body 4 and closely attached to the rear side wall, a controller protection box 7 is arranged on the back surface of the box body 4, a timer module 19, a PLC (programmable logic controller) 20 and a steam generator 21 are arranged inside the controller protection box 7, the steam generator 21 is communicated with the inside of the box body 4 through a steam overflow pipe 22 and a water suction pipe 23, and the LED display screen 6, the disc-type heating pipe 8, the liquid level sensor 9, the cooling fan 12, the thermocouple sensor 17, the temperature and humidity sensor 18, the timer module 19 and the steam generator 21 are respectively and electrically connected with the PLC 20.
6 left sides of LED display screen set up the maintenance mode and set for the edition piece, 3 kinds of maintenance modes are respectively: standard curing, steam curing and boiling water curing, and users can select different curing modes according to requirements; temperature and humidity display and setting plates are arranged in the middle of the LED display screen 6, so that users can set different temperatures and humidities according to needs and can set a heat preservation and moisture preservation mode; the right side of the LED display screen 6 is provided with a time display and setting plate block, and a user can set different maintenance times according to needs.
The rear side position of the large box cover 3, which is in contact with the box body 4, is hinged through a hinge, and the large box cover 3 can be conveniently opened by directly lifting backwards when the large box cover needs to be opened; and the position where the big case lid 3 and the box 4 contact is equipped with the sealing washer, isolated external environment in order to ensure that the internal environment is relatively stable.
The liquid level sensor 9 adopts a CQ33-N21PBU2 type capacitance normally closed liquid level sensor.
The cooling fan 12 adopts a DA12025B12L type cooling fan, and has low cost and good heat dissipation effect.
The thermocouple sensor 17 adopts a pressure spring thermocouple-E type thermocouple sensor and is used for measuring the water temperature in a boiling water curing mode, and the temperature measuring range is 0-400 ℃.
The temperature and humidity sensor 18 adopts an SHT20 type temperature and humidity sensor for measuring the temperature and humidity in the box 4 in the standard and steam curing modes, and the temperature of the working medium: -40-125 ℃, precision: plus or minus 0.3 ℃; humidity of working environment: 0-100% RH, precision: 3 percent.
The PLC programmable controller 20 adopts a CPU224XP-AC/DC/RLY type module, and can support 7 extension modules at most.
The outlet at the bottom end of the steam overflow pipe 22 is positioned in the middle of the inside of the box body 4, and the outlet at the bottom end of the water suction pipe 23 is positioned at the bottom of the inside of the box body 4, so that the steam generator 21 is ensured to smoothly suck water from the inside of the box body 4, and the release of steam is ensured.
The utility model discloses a theory of operation: when in use, a certain amount of water is added into the box body 4, and the proper water level is determined through the communicating glass tube 11; then, the power supply is turned on, and the disc heating pipe 8 is controlled to be heated through the PLC 20. Under the condition of heat preservation, when the water temperature is reduced, the thermocouple sensor 8 in the box body 4 timely feeds the water temperature back to the PLC 20, and the PLC 20 controls the disc-type heating pipe 8 to heat the water body in the box body 4, so that the purpose of heat preservation is achieved. The setting of capacitanc normally closed level sensor 9 can prevent to lead to the inside moisture of box 4 to volatilize the water level and hang down excessively because of heating for a long time, and in case liquid level sensor 9 feeds back the signal to PLC programmable controller 20 when the water level is too low, controls disc heating pipe 8 by PLC programmable controller 20 again and stops heating. The inside of the box body 4 is also provided with a steam generator 21 for standard maintenance and steam maintenance, water in the box body 4 can enter the steam generator 21 through the water suction port 23, and then steam generated by the steam generator 21 is discharged into the box body 4. In addition, a thermocouple sensor 17 is arranged to monitor the humidity in the box body 4 at any time, when the humidity in the box body 4 is insufficient, the thermocouple sensor 17 feeds the humidity in the box body 4 back to the PLC 20, and then the steam generator 21 absorbs water to generate steam to supplement the humidity in the box body 4.
Except that two layers of shelf boards 14 are respectively arranged inside the box body 4 so as to place more concrete test blocks. Wherein the first layer of frame plates 14 is arranged above the disc heater pipe 8 at a distance from it. A second layer of shelf panels 14 is provided in the middle of the cabinet 4 and is supported by shelf panel legs 15. The test block is placed on the upper part of the frame plate 14, and a plurality of rows of liquid overflow holes 24 are formed in the frame plate 14, so that the water body can be conveniently contacted with the disc type heating pipe 8. A plurality of rows of frame plate supporting legs 13 are arranged below the one-layer frame plate 14, the arrangement method not only provides support for the concrete test block, but also separates the disc type heating pipe 8 from the concrete test block, prevents the disc type heating pipe 8 from being damaged due to compression and collision of the test block, and prolongs the service life of the maintenance box.
When the interior of the box body 4 needs to be cooled, the small box cover 2 is opened, the cooling time and the temperature are set through the LED display screen 6 and the PLC 20, so that the power of the cooling fan 12 is controlled, and the effect of controlling the cooling rate is achieved. Can directly open the water evacuation of sluicing valve 10 in with box 4 after the maintenance finishes, conveniently in time change the water in the box and wash inside incrustation scale, effectively avoided the bottom half incrustation scale deposit phenomenon to appear, further prevented the corruption of box and disk heating pipe such as chloride and sulfate that exist in the incrustation scale, very useful to the life who improves the curing box.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a novel multi-functional integral type concrete test block curing box which characterized in that contains: the box body is of a hollow cuboid structure with an open top, the periphery of the bottom ring of the box body is provided with box body support supports to ensure the integral stability, the top of the box body is provided with a big box cover to play a role in shielding and heat preservation, the center of the upper surface of the big box cover is provided with the small box cover, the center of the big box cover is provided with the cooling fan at the lower part of the small box cover to control the cooling rate, and the two sides of the upper surface of the big box cover are provided with symmetrically distributed handles to facilitate the opening of the big box cover, the front of the box body is provided with an LED display screen, the left side surface of the box body is provided with a drain valve and a communicating glass pipe, the drain valve and the communicating glass pipe are both communicated with the inside of the box body, the inner wall of the box body is provided with frame plate clamping legs which are symmetrically distributed front and back, the upper surfaces of the frame plate clamping legs are provided with a frame plate, the bottom inside the box body is provided with a disc type heating pipe, a frame plate supporting leg is arranged between the disc type heating pipes at the bottom inside the box body, the top of the frame plate supporting leg is provided with a frame plate, the frame plate is provided with a liquid overflow hole which penetrates up and down to ensure that the upper environment and the lower environment of the frame plate are communicated, the back side wall inside the box body is tightly attached with a thermocouple sensor and a temperature and humidity sensor, the back side of the box body is provided with, the steam generator is communicated with the interior of the box body through a steam overflow pipe and a water suction pipe, and the LED display screen, the disc-type heating pipe, the liquid level sensor, the cooling fan, the thermocouple sensor, the temperature and humidity sensor, the timer module and the steam generator are respectively and electrically connected with the PLC;
LED display screen left side set up maintenance mode and set for the plate, 3 kinds of maintenance modes are respectively: standard curing, steam curing and boiling water curing; a temperature and humidity display and setting plate is arranged in the middle of the LED display screen; the right side of the LED display screen is provided with a time display and setting plate.
2. The novel multifunctional integrated concrete test block curing box as claimed in claim 1, wherein the rear side position of the large box cover contacting with the box body is hinged through a hinge, and a sealing ring is arranged at the position of the large box cover contacting with the box body.
3. The new multifunctional integrated concrete test block curing box as claimed in claim 1, wherein the liquid level sensor is CQ33-N21PBU2 type capacitance type normally closed liquid level sensor.
4. The novel multifunctional integrated concrete test block curing box as claimed in claim 1, wherein the cooling fan is DA12025B12L type cooling fan.
5. The new multifunctional integrated concrete test block curing box according to claim 1, characterized in that the thermocouple sensor is a pressure spring thermocouple-E type thermocouple sensor for measuring the water temperature in the boiling water curing mode, and the temperature measuring range is 0-400 ℃.
6. The novel multifunctional integrated concrete test block curing box as claimed in claim 1, wherein the temperature and humidity sensor is an SHT20 type temperature and humidity sensor for measuring the temperature and humidity in the box body under standard and steam curing modes.
7. The new multifunctional integrated concrete test block curing box of claim 1, characterized in that the PLC programmable controller adopts CPU224XP-AC/DC/RLY type module.
8. The novel multifunctional integrated concrete test block curing box as claimed in claim 1, wherein the bottom outlet of the steam overflow pipe is located at the middle part in the box body, and the bottom outlet of the suction pipe is located at the bottom in the box body.
9. The novel multifunctional integrated concrete test block curing box as claimed in claim 1 or 3, wherein the liquid level sensor is used for detecting the water level inside the box body, so as to prevent the disc heating pipe from being dried due to too low water level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020520639.3U CN212072369U (en) | 2020-04-10 | 2020-04-10 | Novel multi-functional integral type concrete test block curing box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020520639.3U CN212072369U (en) | 2020-04-10 | 2020-04-10 | Novel multi-functional integral type concrete test block curing box |
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| CN212072369U true CN212072369U (en) | 2020-12-04 |
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| CN202020520639.3U Expired - Fee Related CN212072369U (en) | 2020-04-10 | 2020-04-10 | Novel multi-functional integral type concrete test block curing box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203634A (en) * | 2021-04-23 | 2021-08-03 | 防灾科技学院 | Intelligent maintenance and temperature and humidity control loading test system for aeolian sand modified soil |
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2020
- 2020-04-10 CN CN202020520639.3U patent/CN212072369U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203634A (en) * | 2021-04-23 | 2021-08-03 | 防灾科技学院 | Intelligent maintenance and temperature and humidity control loading test system for aeolian sand modified soil |
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