High-precision tester for cement hydration heat

Abstract

The utility model discloses a cement hydration heat high-precision tester which comprises a tank body, four supporting legs are fixedly installed at the bottom of the tank body, the bottom of the tank body is communicated with a discharge pipe, a valve is installed in the discharge pipe, an outer ring is fixedly installed on the outer side of the top end of the tank body, and a valve is installed in the outer ring. A heat preservation sealing cover is movably installed on the top of the tank body, three lock catches are movably connected to the outer side of the heat preservation sealing cover and the outer side of the outer ring in a clamped mode, the interior of the heat preservation sealing cover communicates with a sealing filling port, and a control panel is fixedly installed on the top of the heat preservation sealing cover. According to the utility model, the servo motor and the stirring rod are arranged and are matched with stirring operation in cement heat determination, so that concrete uniformity and auxiliary measurement of cement heat are facilitated, and when water is added through the sealed filling port, the stirring rod is matched with uniform stirring so as to measure hydration heat of different quantitative cement and water; and the measurement precision and convenience are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement hydration heat measurement, in particular to a high-precision cement hydration heat measuring instrument. Background Technique

[0002] Cement hydration heat refers to the heat released during the exothermic reaction of cement and water. During the hardening process of cement, heat is continuously released. After adding water to cement, various minerals in the cement react with water to generate a series of new compounds, mainly including calcium silicate hydrate, calcium ferrite hydrate gel, calcium hydroxide, calcium aluminate hydrate, and calcium sulfoaluminate hydrate crystals, and heat is released. The gel gradually thickens, and the cement paste gradually loses its plasticity, showing a setting phenomenon. Thereafter, calcium hydroxide and hydrated calcium aluminate in the gel transform into crystals, penetrating through the gel to form cement stone. This process is called the setting and hardening process of cement.

[0003] After the cement is mixed with water, a large amount of heat will be released, which will cause the temperature inside the concrete to rise. If the temperature stress exceeds the tensile strength of the concrete, cracks will occur, seriously affecting the structural safety and durability of the concrete. Therefore, in large-scale concrete projects, high-performance concrete, and special mixed concrete, it is necessary to measure the temperature change of the hydration heat. According to the measurement results of the cement hydration heat, a reasonable construction plan is formulated. However, the existing devices for measuring cement hydration heat generally have poor measurement accuracy and cannot well comprehensively measure the temperature change. Moreover, the uniformity during the mixing of cement and water will affect the measurement of the cement hydration heat. Based on this, a high-precision cement hydration heat measuring instrument is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-precision cement hydration heat measuring instrument to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solution: A high-precision cement hydration heat measuring instrument, comprising a tank body, four supporting feet are fixedly installed at the bottom of the tank body, a discharge pipe is communicated with the bottom of the tank body, a valve is installed inside the discharge pipe, an outer ring is fixedly installed on the outer side of the top end of the tank body, a heat preservation and sealing cover is movably installed on the top of the tank body, three locking buckles are movably clamped on the outer sides of the heat preservation and sealing cover and the outer ring, a sealing filling port is communicated with the inside of the heat preservation and sealing cover, a control panel is fixedly installed on the top of the heat preservation and sealing cover, two heat conduction frames are fixedly installed inside the tank body, partition plates are fixedly installed inside both of the two heat conduction frames, a temperature transmitter is fixedly installed on the top of the partition plate, a thermal resistor is fixedly installed on the bottom of the partition plate, a heat conduction medium liquid is arranged inside both of the two heat conduction frames, a heat conduction rod is fixedly installed on the bottom of the heat preservation and sealing cover, a plurality of temperature sensors are fixedly installed inside the heat conduction rod, a support bearing is sleeved on the outer side of the heat conduction rod, a support ring is sleeved on the outer side of the support bearing, a driven gear ring is fixedly sleeved on the outer side of the top end of the support ring, a driving gear is meshed with the outer side of the driven gear ring, a servo motor is drivingly connected to the top of the driving gear, four stirring rods are fixedly installed on the outer side of the bottom end of the support ring, and an observation window is fixedly installed inside the front surface of the tank body.

[0006] Preferably, the specification and size of the heat preservation and sealing cover are adapted to those of the tank body, and the three locking buckles are evenly distributed in a circumferential manner on the outer sides of the heat preservation and sealing cover and the outer ring.

[0007] Preferably, one end of the thermal resistor away from the partition plate is fixedly installed at the bottom of the heat conduction frame through an insulating pad, the heat conduction medium liquid is located on the opposite side of the partition plate and the heat conduction frame, the material of the heat conduction medium liquid is silicone oil, and the two heat conduction frames are symmetrically and evenly distributed inside the tank body.

[0008] Preferably, the temperature sensors are linearly and evenly distributed inside the heat conduction rod, and the materials of the heat conduction rod and the heat conduction frame are metal ceramics and stainless steel parts.

[0009] Preferably, the heat conduction rod is located at the center of the heat preservation and sealing cover and the tank body, the four stirring rods are evenly distributed in a circumferential manner on the outer side of the support ring, and the servo motor is fixedly installed at the bottom of the heat preservation and sealing cover.

[0010] Preferably, the output end of the control panel is electrically connected to the input end of the servo motor through a wire.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: When this structure is in use, the operator opens the heat-insulating and sealing cover, puts the concrete to be measured into the interior of the tank body, adds a certain amount of water, then closes the tank body with the heat-insulating and sealing cover, and closes and limits it through the buckle. Then, add the subsequent required amount of water through the sealed filling port. Next, start the servo motor to rotate. The servo motor drives the driving gear to rotate, drives the engaged driven gear ring to rotate through the driving gear, and promotes the support ring and the stirring rod to rotate, so as to uniformly mix the concrete. As the mixing progresses, heat begins to be released. The heat is conducted through the heat-conducting rod and detected by the temperature sensor at different depths and heights. Then, the heat is transferred to the thermal resistor through the heat-conducting frame and the heat-conducting medium liquid. The data of the thermal resistor, in cooperation with the temperature transmitter, is shown and displayed through the control panel. The overall solution has high measurement accuracy, can measure the heat of hydration of cement at different depths, and can measure a complete temperature change curve. In addition, different temperature conditions can be measured according to different added water amounts. The overall measurement is relatively comprehensive and convenient to use;

[0012] Through the setting of the servo motor and the stirring rod in the present utility model, during the measurement of the heat of hydration of cement, it cooperates with the stirring operation, which is convenient for the uniformity of the concrete and assists in measuring the heat of hydration of cement. And when water is added through the sealed filling port, it cooperates with the stirring to be uniform so as to measure the heat of hydration of different quantitative cement and water, further increasing the measurement accuracy and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view three-dimensional external structure schematic diagram of the present utility model.

[0014] Figure 2 It is a rear view and upward view three-dimensional external structure schematic diagram of the present utility model.

[0015] Figure 3 It is a front view sectional internal structure schematic diagram of the present utility model.

[0016] Figure 4 For the present utility model Figure 3 The enlarged structure schematic diagram at position A.

[0017] In the figure: 1, tank body; 2, heat-insulating and sealing cover; 3, sealed filling port; 4, control panel; 5, outer ring; 6, buckle; 7, observation window; 8, support feet; 9, discharge pipe; 10, valve; 11, heat-conducting frame; 12, thermal resistor; 13, partition board; 14, temperature transmitter; 15, heat-conducting medium liquid; 16, heat-conducting rod; 17, temperature sensor; 18, stirring rod; 19, servo motor; 20, driving gear; 21, driven gear ring; 22, support ring; 23, support bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 - 4 , the present utility model provides a technical solution: a high-precision cement hydration heat measuring instrument, including a tank body 1. Four supporting feet 8 are fixedly installed at the bottom of the tank body 1. A discharge pipe 9 is communicated with the bottom of the tank body 1. A valve 10 is installed inside the discharge pipe 9. An outer ring 5 is fixedly installed on the outer side of the top end of the tank body 1. A heat preservation and sealing cover 2 is movably installed on the top of the tank body 1. Three locking buckles 6 are movably clamped on the outer sides of the heat preservation and sealing cover 2 and the outer ring 5. A sealed filling port 3 is communicated with the inside of the heat preservation and sealing cover 2. A control panel 4 is fixedly installed on the top of the heat preservation and sealing cover 2. Two heat conduction frames 11 are fixedly installed inside the tank body 1. Partition plates 13 are fixedly installed inside both of the two heat conduction frames 11. A temperature transmitter 14 is fixedly installed on the top of the partition plate 13. A thermal resistor 12 is fixedly installed on the bottom of the partition plate 13. Heat conduction medium liquids 15 are arranged inside both of the two heat conduction frames 11. A heat conduction rod 16 is fixedly installed on the bottom of the heat preservation and sealing cover 2. A plurality of temperature sensors 17 are fixedly installed inside the heat conduction rod 16. A support bearing 23 is sleeved on the outer side of the heat conduction rod 16. A support ring 22 is sleeved on the outer side of the support bearing 23. A driven gear ring 21 is fixedly sleeved on the outer side of the top end of the support ring 22. A driving gear 20 is meshed with the outer side of the driven gear ring 21. A servo motor 19 is drivingly connected to the top of the driving gear 20. Four stirring rods 18 are fixedly installed on the outer side of the bottom end of the support ring 22. An observation window 7 is fixedly installed inside the front surface of the tank body 1.

[0020] Working principle of the above technical solution: During use, the operator opens the heat-insulating and sealing cover 2, puts the concrete to be measured into the interior of the tank body 1, adds a certain amount of water, then closes the tank body 1 with the heat-insulating and sealing cover 2 and closes and limits it through the lock catch 6. Then, the subsequent required amount of water is added through the sealed filling port 3. Next, the servo motor 19 is started to rotate. The servo motor 19 drives the driving gear 20 to rotate. The driven gear ring 21 engaged with the driving gear 20 is driven to rotate, and the support ring 22 and the stirring rod 18 are driven to rotate to uniformly mix the concrete. As the mixing progresses, heat begins to be released. The heat is conducted through the heat-conducting rod 16 and detected by the temperature sensor 17 at different depths and heights. Then, the heat is transferred to the thermal resistor 12 through the heat-conducting frame 11 and the heat-conducting medium liquid 15. The data of the thermal resistor 12 is shown through the temperature transmitter 14 and displayed on the control panel 4. The overall solution has high measurement accuracy, can measure the heat of hydration of cement at different depths, and can measure a complete temperature change curve. In addition, it can also measure different temperature conditions according to different added water amounts. The overall measurement is relatively comprehensive and convenient to use.

[0021] In another embodiment, as Figures 1 - 4 shown, the specification dimensions of the heat-insulating and sealing cover 2 are adapted to those of the tank body 1. The three lock catches 6 are evenly distributed in a circular pattern on the outer sides of the heat-insulating and sealing cover 2 and the outer ring 5.

[0022] The heat-insulating and sealing cover 2 seals the top of the tank body 1, reducing the outward dissipation of the heat of hydration of cement, facilitating auxiliary heat-insulating measurement, and completely measuring the released heat of hydration of cement at one time, simulating the situation where heat dissipation is inconvenient. The lock catch 6 assists in closing the heat-insulating and sealing cover 2 and the outer ring 5, facilitating closing.

[0023] In another embodiment, as Figure 3 and Figure 4 shown, the end of the thermal resistor 12 far from the partition 13 is fixedly installed at the bottom of the heat-conducting frame 11 through an insulating pad. The heat-conducting medium liquid 15 is located on the opposite side of the partition 13 and the heat-conducting frame 11. The material of the heat-conducting medium liquid 15 is silicone oil. The two heat-conducting frames 11 are symmetrically and evenly distributed inside the tank body 1.

[0024] The thermal resistor 12 is fixed on the opposite side of the partition 13 and the heat-conducting frame 11 through an insulating pad, facilitating the conduction of the heat conducted through the heat-conducting frame 11 and the heat-conducting medium liquid 15, facilitating temperature measurement. The heat-conducting medium liquid 15 can regularly and evenly transfer the heat to the inside of the thermal resistor 12, facilitating the measurement of the temperature change situation through the thermal resistor 12 and facilitating the auxiliary derivation of the temperature change curve.

[0025] In another embodiment, as Figure 3 and Figure 4As shown, the temperature sensors 17 are linearly and evenly distributed inside the heat-conducting rod 16. The heat-conducting rod 16 and the heat-conducting frame 11 are made of cermet and stainless steel parts.

[0026] The temperature sensors 17 and the heat-conducting rod 16 are located at the center of the device, facilitating the measurement of different temperature data at different depths, making it convenient for measurement and increasing the accuracy. The cermet and stainless steel parts are corrosion-resistant and have good heat conductivity, facilitating auxiliary temperature conduction and temperature measurement, and increasing the overall structural measurement stability.

[0027] In another embodiment, as Figure 3 and Figure 4 shown, the heat-conducting rod 16 is located at the center of the thermal insulation sealing cover 2 and the tank body 1. Four stirring rods 18 are evenly distributed in a circle on the outside of the support ring 22. The servo motor 19 is fixedly installed at the bottom of the thermal insulation sealing cover 2.

[0028] The heat-conducting rod 16 is located at the center to facilitate the stirring operation of the stirring rod 18 driven by the servo motor 19. And the central position of the heat-conducting rod 16 is convenient for measuring the central position of the heat of hydration of cement, increasing the usage effect of the structure. In this scheme, through the setting of the servo motor 19 and the stirring rod 18, it cooperates with the stirring operation in the measurement of the heat of hydration of cement, facilitating the uniformity of concrete and assisting in measuring the situation of the heat of hydration of cement. And when water is added through the sealed filling port 3, it cooperates with stirring evenly to measure the heat of hydration of different quantitative cement and water, further increasing the measurement accuracy and convenience.

[0029] In another embodiment, as Figures 1 - 4 shown, the output end of the control panel 4 is electrically connected to the input end of the servo motor 19 through a wire.

[0030] The measuring end of the temperature transmitter 14 is electrically connected to the terminal of the thermal resistor 12 through a wire. The output ends of the temperature transmitter 14 and the temperature sensors 17 are electrically connected to the input end of the control panel 4 through a wire. The output end of the control panel 4 is electrically connected to the input end of the servo motor 19 through a wire, facilitating temperature measurement and stirring control, and facilitating the intelligent display of measurement values.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision measuring instrument for the heat of hydration of cement, comprising a tank body (1), characterized in that: Four feet (8) are fixedly installed at the bottom of the tank body (1). A discharge pipe (9) is communicated with the bottom of the tank body (1). A valve (10) is installed inside the discharge pipe (9). An outer ring (5) is fixedly installed on the outer side of the top end of the tank body (1). A heat preservation and sealing cover (2) is movably installed on the top of the tank body (1). Three locking buckles (6) are movably clamped on the outer sides of the heat preservation and sealing cover (2) and the outer ring (5). A sealed filling port (3) is communicated with the inside of the heat preservation and sealing cover (2). A control panel (4) is fixedly installed on the top of the heat preservation and sealing cover (2). Two heat conduction frames (11) are fixedly installed inside the tank body (1). A partition plate (13) is fixedly installed inside each of the two heat conduction frames (11). A temperature transmitter (14) is fixedly installed on the top of the partition plate (13). A thermal resistor (12) is fixedly installed on the bottom of the partition plate (13). A heat conduction medium liquid (15) is arranged inside each of the two heat conduction frames (11). A heat conduction rod (16) is fixedly installed on the bottom of the heat preservation and sealing cover (2). A plurality of temperature sensors (17) are fixedly installed inside the heat conduction rod (16). A support bearing (23) is sleeved on the outer side of the heat conduction rod (16). A support ring (22) is sleeved on the outer side of the support bearing (23). A driven gear ring (21) is fixedly sleeved on the outer side of the top end of the support ring (22). A driving gear (20) is meshed with the outer side of the driven gear ring (21). A servo motor (19) is drivingly connected to the top of the driving gear (20). Four stirring rods (18) are fixedly installed on the outer side of the bottom end of the support ring (22). An observation window (7) is fixedly installed inside the front surface of the tank body (1).

2. The high-precision cement hydration heat measuring instrument according to claim 1, wherein: The specification size of the heat preservation and sealing cover (2) is adapted to that of the tank body (1). The three locking buckles (6) are evenly distributed in a circumferential manner on the outer sides of the heat preservation and sealing cover (2) and the outer ring (5).

3. The high-precision cement hydration heat measuring instrument according to claim 1, characterized in that: One end of the thermal resistor (12) far away from the partition plate (13) is fixedly installed at the bottom of the heat conduction frame (11) through an insulating pad. The heat conduction medium liquid (15) is located on the opposite side of the partition plate (13) and the heat conduction frame (11). The material of the heat conduction medium liquid (15) is silicone oil. The two heat conduction frames (11) are symmetrically and evenly distributed inside the tank body (1).

4. The high-precision cement hydration heat measuring instrument according to claim 1, characterized in that: The temperature sensors (17) are linearly and evenly distributed inside the heat conduction rod (16). The materials of the heat conduction rod (16) and the heat conduction frame (11) are metal ceramic and stainless steel parts.

5. The high-precision cement hydration heat measuring instrument according to claim 1, characterized in that: The heat conduction rod (16) is located at the center of the heat preservation and sealing cover (2) and the tank body (1). The four stirring rods (18) are evenly distributed in a circumferential manner on the outer side of the support ring (22). The servo motor (19) is fixedly installed on the bottom of the heat preservation and sealing cover (2).

6. The high-precision cement hydration heat measuring instrument according to claim 1, wherein: The output end of the control panel (4) is electrically connected to the input end of the servo motor (19) through a wire.

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