A test environment closed cement stability boiling box

Abstract

The utility model discloses a cement test technical field's test environment closed cement stability boiling box, including boiling box, cooling pipe, heat dissipation pump, box cover and cooling box, can carry out boiling test to sample through the sealed boiling box, increase cooling pipe simultaneously can carry out cooling and re-liquefaction to water vapor, and the condensed water after water is cooled is backflow to boiling box, make boiling box keep water level and will not reduce greatly, reduce moisture loss, still increase cooling tank and give cooling pipe circulating cooling water, ensure that cooling pipe always keeps low temperature, and the condensed water formed after water vapor cooling, still keep higher temperature, the influence of water temperature in whole boiling box is lower, still increase temperature sensor and liquid level meter, monitor the liquid level and temperature in boiling box, make this device can complete whole test with smaller temperature difference, improve the accuracy of test data effectively.

Description

Technical Field

[0001] This utility model relates to the field of cement testing technology, and in particular to a cement stability boiling test chamber with a closed testing environment. Background Technology

[0002] The Le Chatelier test is a standard method for determining the soundness of cement. It assesses the volume stability of cement by measuring the change in the distance between the Le Chatelier pointers before and after boiling. In the testing of cement physical properties, cement stability is one of the important indicators for measuring cement quality. It is usually tested by boiling, which requires boiling cement cakes or Le Chatelier specimens in a boiling chamber.

[0003] Currently, existing boiling chambers for cement stability testing require boiling the water inside. During the process, the water inside the chamber boils violently, which can easily cause water splashing. The water vapor and boiling water splashing can affect the surrounding environment and may also scald the operators, posing a safety hazard.

[0004] This situation will cause the water level in the tank to drop, which will affect the boiling effect. Changes in water level will also affect the boiling test to some extent.

[0005] When the pressure inside the chamber is too high, water vapor can push up the top cover and flow out through the opening. This sudden loss of water vapor from the top cover can cause a sudden drop in heat inside the chamber, leading to overall temperature changes. This phenomenon of water vapor pushing up the cover can occur intermittently and frequently, and the repeated temperature changes can affect the test results. In particular, when using a boiling chamber with low temperature control accuracy, it is difficult to accurately maintain the required test temperature, causing the water temperature to fluctuate constantly, resulting in distorted experimental data.

[0006] Based on this, the present invention designs a cement stability boiling tank with a closed test environment to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a sealed cement stability boiling chamber for testing. This chamber allows for boiling tests on samples while maintaining a stable water level. A cooling pipe is added to cool and re-liquefy the water vapor, and the condensed water is returned to the boiling chamber, reducing water loss. A cooling tank circulates cooling water to the cooling pipe, ensuring it remains at a low temperature. The condensate formed after the water vapor cools also maintains a relatively high temperature, minimizing its impact on the overall water temperature within the boiling chamber. This allows the device to complete the test with a smaller temperature difference, effectively improving the accuracy of the test data.

[0008] This utility model is implemented as follows: a cement stability boiling tank with a closed test environment, comprising: Boiling chamber, cooling pipes, heat pump, chamber lid, and cooling tank; The boiling tank is a closed tank with an opening at the top. The top of the boiling tank is also covered with a lid, which is sealed to the opening at the top of the boiling tank by a threaded seal. An electric heater is also installed at the bottom of the inner cavity of the boiling tank, and a water tap is connected to the bottom of the boiling tank, which is in communication with the bottom of the inner cavity of the boiling tank. The cooling tank is a cooling water tank, and the inside of the cooling tank is filled with cooling water. A heat pump is also connected to the bottom of the inner cavity of the cooling tank. The cooling pipe is a closed straight pipe with openings at both ends. The cooling pipe is stably tilted and mounted above the box cover. The upper opening of the cooling pipe is sealed with a plug. The cooling pipe is externally connected to a cold water pipe and a heat dissipation pipe. Both the cold water pipe and the heat dissipation pipe are connected to the inner cavity of the cooling pipe. The other end of the heat dissipation pipe is connected to the top of the inner cavity of the cooling box. The cold water pipe is connected to the outlet of the cooling pump through a three-way valve. A condenser tube is also inserted into the inner cavity of the cooling tube. An air outlet is provided at the upper end of the condenser tube, and a water return tube is provided at the lower end of the condenser tube. The condenser pipe, return water pipe, and vent pipe are complete sealed pipes; The outlet ends of the water return pipe and the air outlet pipe are both located on the inner side of the box cover, and the insertion hole passes through the box cover from top to bottom and communicates with the inner cavity of the boiling box. Furthermore, a water supply pipe is connected between the air outlet pipe and the condenser pipe via a T-junction; the water supply pipe is also connected to the outlet of the T-junction valve, and the cooling pipe and the condenser pipe are isolated from each other.

[0009] Furthermore, two insertion holes are provided on the box cover, and the water return pipe and the air outlet pipe are respectively inserted into the two different insertion holes; Both the return water pipe and the vent pipe are sealed and inserted into the box cover.

[0010] Furthermore, the condenser pipe, return water pipe, and vent pipe form a rectangular U-shaped bend. The cooling pipe is a transparent PVC pipe, and the lower end opening of the cooling pipe is also sealed and inserted into the return water pipe.

[0011] Furthermore, a sample rack, which is a wire mesh frame, is stably mounted inside the boiling tank.

[0012] Furthermore, a glass tube level gauge is also installed on the outside of the boiling tank; A temperature sensor is also installed inside the boiling tank.

[0013] Furthermore, a pipe clamp is provided on the top of the box cover. The pipe clamp is a pipe clip, and the cooling pipe is stably tilted by the pipe clamp. The inner side of the bottom of the box cover is sloped. A pressure relief valve is also installed on the top of the box cover.

[0014] The beneficial effects of this utility model are: 1. By setting a spiral-locked lid, this utility model seals the opening of the boiling tank, effectively preventing the steam from lifting the lid, thus achieving a splash-proof effect. It can effectively block boiling water from splashing, prevent water from scalding the operator, and improve the safety of equipment use. 2. This device maintains a high temperature inside the boiling chamber, while condensing water vapor into liquid through the cooling pipes. The liquid then flows back into the boiling chamber through the lower part of the inclined cooling pipes, preventing the water level inside the chamber from dropping and affecting the boiling effect. In addition, the cooling pump continuously circulates cooling water into the cooling pipes to ensure that the cooling pipes are kept at a low temperature, so that the water vapor in the condenser pipes can maintain the condensation effect. 3. This device also includes a temperature sensor that can be linked to the heater to effectively control the water temperature, ensuring that the water in the boiling chamber remains at the set temperature and providing continuous boiling tests for cement samples. It can stably control the temperature inside the chamber within the range required for cement stability boiling, improving temperature control accuracy. A pressure relief valve is also added; when the internal pressure is too high, the valve releases air, effectively preventing boiling water from splashing and providing effective pressure relief. The whistling sound from the pressure relief valve alerts the operator to take appropriate measures, effectively improving the safety of the cement stability testing process. Furthermore, it continuously monitors the water temperature to prevent test failures or equipment damage due to abnormal temperature or high pressure, improving the reliability of equipment operation. 4. The inner side of the lid is sloped. Water vapor condenses on the sloped bottom of the lid and quickly gathers along the slope, dripping into the boiling tank. This effectively reduces the amount of water in the boiling tank. In addition, this device is equipped with a water supply pipe that can replenish the water in the boiling tank. The water supply volume and speed are controlled by a three-way valve, allowing for slow replenishment. This not only slowly adjusts the water volume in the boiling tank but also slows down the replenishment rate, preventing sudden changes in water temperature and maintaining a stable water temperature. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model; Fig. 2 This is a schematic diagram of the cooling pipe structure of this utility model; Fig. 3 This is a schematic diagram of the front structure of the bottom of the box cover of this utility model; Fig. 4 This is a schematic diagram of the inclined surface structure at the bottom of the box cover of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1-Boiling chamber, 11-Heater, 12-Sample rack, 13-Faucet, 14-Glass tube level gauge, 2-Cooling tube, 21-Return water tube, 22-Gas outlet tube, 23-Condenser tube, 24-Sealing plug, 3-Cooling pump, 31-Water supply tube, 32-Three-way valve, 33-Cold water tube, 4-Case cover, 41-Insertion hole, 42-Pipe clamp, 5-Cooling chamber, 51-Cooling tube. Detailed Implementation

[0018] Please see Figs. 1 to 4 As shown, this utility model provides a cement stability boiling tank with a closed test environment. In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In a specific embodiment of the technical solution of this utility model: It includes a boiling tank 1, a cooling pipe 2, a heat pump 3, a tank cover 4, and a cooling tank 5; The boiling tank 1 is a closed tank with an opening at the top. The top of the boiling tank 1 is also covered by a lid 4, which is sealed to the top opening of the boiling tank 1 by a threaded seal. An electric heater 11 is also installed at the bottom of the inner cavity of the boiling tank 1. It is made of the same material and structure as the water heater to ensure that it can heat the water conveniently and is safe. A water tap 13 is also connected to the bottom of the boiling tank 1, and the water tap 13 is connected to the bottom of the inner cavity of the boiling tank 1. A glass tube level gauge 14 is also installed on the outside of the boiling tank 1. The glass tube level gauge 14 can conveniently observe the internal liquid level and whether the water is boiling. Because the liquid level is directly led to the outside of the boiling tank 1 through the glass tube level gauge 14, it is also convenient for personnel to record the liquid level inside the boiling tank 1, and to replenish and regulate the overall liquid level inside the boiling tank 1. The boiling tank 1 is also equipped with a temperature sensor. The temperature sensor and the electric heater 11 are both connected to the controller of the whole equipment. The controller can be a microcontroller or a conventional controller for temperature control. The temperature setting method is the same as that of an electric water heater or electric kettle. When the water temperature in the boiling tank 1 reaches the set temperature, the electric heater 11 stops working. If the set temperature is not reached, it continues to heat.

[0020] Inside the boiling chamber 1, a sample rack 12 is stably mounted. The sample rack 12 is a mesh frame, a commonly used support for placing cement samples from the Le Chatelier method. The mesh frame structure does not isolate water vapor.

[0021] Cooling tank 5 is a cooling water tank, and the inside of cooling tank 5 is filled with cooling water. Cooling pump 3 is also connected to the bottom of the inner cavity of cooling tank 5. The cooling pipe 2 is a closed straight pipe with openings at both ends. The cooling pipe 2 is stably and inclinedly mounted above the box cover 4 by pipe clamp 24. The upper opening of the cooling pipe 2 is sealed with sealing plug 24. The top of the box cover 4 is equipped with a pipe clamp 42, which is a pipe clamp, and the cooling pipe 2 is stably tilted through the pipe clamp 42; The bottom inner side of the lid 4 is sloping, that is, one side is higher and the other side is lower, which makes it easier for water vapor on the inner side of the lid 4 to slide down the sloping surface after condensation, and for water droplets to gather and drip down more quickly and flow back into the boiling tank 1. The top of the lid 4 is also equipped with a pressure relief valve. When the internal pressure of the boiling tank 1 exceeds the protection range of the pressure relief valve, the pressure relief valve will automatically release pressure. Similar to the pressure cooker, the amount of water vapor leaked is relatively small, and the water droplets will not splash away and the missing water will be replenished through the water supply pipe 31. There is no need to open the lid and suspend the test.

[0022] The cooling pipe 2 is externally connected to the cold water pipe 33 and the heat dissipation pipe 51. Both the cold water pipe 33 and the heat dissipation pipe 51 are connected to the inner cavity of the cooling pipe 2. The other end of the heat dissipation pipe 51 is connected to the top of the inner cavity of the cooling box 5. The cold water pipe 33 is connected to the outlet of the heat pump 3 through the three-way valve 32. A condenser tube 23 is also inserted into the inner cavity of the cooling tube 2. An air outlet tube 22 is installed at the upper end of the condenser tube 23, and a water return tube 21 is installed at the lower end of the condenser tube 23. The condenser pipe 23, the return water pipe 21, and the vent pipe 22 are complete sealed pipes; The condenser pipe 23, the return water pipe 21, and the vent pipe 22 form a square-shaped integral U-shaped bend. The cooling pipe 2 is a transparent, high-temperature resistant PVC pipe. The lower end opening of the cooling pipe 2 is also sealed and inserted into the return water pipe 21. This can be done by using adhesive or by using a sealing ring to seal it tightly. A small amount of water leakage is allowed in the cooling pipe 2, as long as it does not affect the cooling effect on the condenser pipe 23.

[0023] The outlet ends of the return water pipe 21 and the air outlet pipe 22 are both opened on the inner side of the box cover 4, and the insertion hole 41 passes through the box cover 4 from top to bottom and communicates with the inner cavity of the boiling box 1. Furthermore, the outlet pipe 22 and the condenser pipe 23 are connected by a three-way valve to the water supply pipe 31; the water supply pipe 31 is also connected to the outlet of the three-way valve 32. The cooling pipe 2 and the condenser pipe 23 are isolated from each other, which ensures that the cooling water filled in the cooling pipe 2 is isolated from the water vapor in the inner cavity of the condenser pipe 23 and does not communicate with each other, so as to avoid affecting the water level inside the boiling tank 1.

[0024] Two insertion holes 41 are opened on the box cover 4, and the water return pipe 21 and the air outlet pipe 22 are respectively inserted into the two different insertion holes 41; Both the return water pipe 21 and the vent pipe 22 are sealed and inserted into the cover 4. The cover 4 can be a high-temperature resistant rubber sealing plug. The return water pipe 21 and the vent pipe 22 have the same diameter. The return water pipe 21 and the vent pipe 22 are interference-fitted with the insertion hole 41 to achieve a sealing effect. Sealant is applied to the gap between the return water pipe 21 and the vent pipe 22 and the insertion hole 41 to ensure its sealing performance.

[0025] It should be noted that: The Le Chatelier test is a method for testing the stability of cement. It requires measurements to be taken before boiling, followed by boiling treatment for a period of time, and finally, measurements to be taken on the boiled sample. The differences are then compared to obtain accurate data. Because boiling is the reference for the variables, the boiling process requires higher requirements and a higher degree of control over its variables. Not only are there requirements for water temperature, but also for the volume, temperature, and pressure of the boiling water. Abnormal situations also need to be handled promptly. Current boiling boxes are simply a pot or a water tank heated by an electric heating wire. They have a rudimentary structure, and boiling water splashes everywhere, which is quite dangerous.

[0026] In use, the stability of cement is first determined by using a Le Chatelier clamp. Then, the cement sample is placed on the sample rack 12 inside the boiling chamber 1, and the chamber lid 4 is closed to seal the boiling chamber 1. Then, the electric heater 11 is started to heat the water. When the water temperature in the boiling chamber 1 rises to boiling, the water vapor flows upward and enters the steam outlet pipe 22 and the water return pipe 21. At the same time, it will condense on the bottom slope of the chamber lid 4. The water droplets condensed on the bottom slope of the chamber lid 4 will flow downward along the slope and quickly gather into larger water droplets, eventually flowing into the boiling chamber 1.

[0027] The water vapor in the vent pipe 22 and the return water pipe 21 enters the condenser pipe 23, which is located inside the cooling pipe 2, which is filled with cooling water. The water vapor in the condenser pipe 23 rapidly cools and condenses into a liquid state. The condenser pipe 23 is tilted in the same direction as the cooling pipe 2, and the condensate in the condenser pipe 23 flows along the tilt direction. Because the return water pipe 21 is at a lower position, the condensate in the condenser pipe 23 flows back into the boiling tank 1 along the return water pipe 21, effectively preventing water vapor loss. Simultaneously, because the condenser pipe 23 cools the water vapor, it effectively reduces the volume of gas in the boiling tank 1, thus reducing the gas pressure and preventing a rapid increase in the gas pressure inside the boiling tank 1. The water vapor in the condenser pipe 23 only liquefies, and the temperature reduction is not significant; after flowing back into the boiling tank 1, it has little impact on the internal temperature of the boiling tank 1. The continuous temperature control by the electric heater 11 also maintains a stable water temperature in the boiling tank 1.

[0028] The cooling pipe 2 is connected to the heat dissipation pipe 51 and the cold water pipe 33 to cool the inside of the cooling pipe 2, keeping the cooling water inside at a low temperature and continuously cooling the water vapor in the condenser pipe 23.

[0029] The water supply pipe 31 is also connected to the radiator pump 3 via the three-way valve 32, which can inject water into the water supply pipe 31 and flow into the condenser pipe 23 to replenish the water in the boiling tank 1, thereby compensating for the amount of water vapor released by the pressure relief valve.

[0030] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A closed-environment cement stability boiling test chamber, characterized in that, include: Boiling chamber (1), cooling pipe (2), heat pump (3), chamber cover (4) and cooling chamber (5); The boiling tank (1) is a closed box with an opening at the top. The top of the boiling tank (1) is also covered by a lid (4), which is sealed to the opening at the top of the boiling tank (1) by a threaded seal. An electric heater (11) is also provided at the bottom of the inner cavity of the boiling tank (1), and a water tap (13) is also connected to the bottom of the boiling tank (1). The water tap (13) is connected to the bottom of the inner cavity of the boiling tank (1). The cooling tank (5) is a cooling water tank, and the inside of the cooling tank (5) is filled with cooling water. A heat pump (3) is also connected to the bottom of the inner cavity of the cooling tank (5). The cooling pipe (2) is a closed straight pipe with openings at both ends. The cooling pipe (2) is stably tilted and mounted above the box cover (4). The upper opening of the cooling pipe (2) is sealed with a sealing plug (24). The cooling pipe (2) is externally connected to a cold water pipe (33) and a heat dissipation pipe (51). Both the cold water pipe (33) and the heat dissipation pipe (51) are connected to the inner cavity of the cooling pipe (2). The other end of the heat dissipation pipe (51) is connected to the top of the inner cavity of the cooling box (5). The cold water pipe (33) is connected to the outlet of the heat pump (3) through a three-way valve (32). A condenser tube (23) is also inserted into the inner cavity of the cooling tube (2). An air outlet pipe (22) is provided at the upper end of the condenser tube (23), and a water return pipe (21) is provided at the lower end of the condenser tube (23). The condenser pipe (23), the return water pipe (21), and the vent pipe (22) are complete sealed pipes; The outlet ends of the return water pipe (21) and the air outlet pipe (22) are both located on the inner side of the box cover (4). Two insertion holes (41) are provided on the box cover (4), and the water return pipe (21) and the air outlet pipe (22) are respectively inserted into the two different insertion holes (41); Furthermore, the insertion hole (41) passes through the box cover (4) from top to bottom and communicates with the inner cavity of the boiling box (1); Furthermore, the air outlet pipe (22) and the condenser pipe (23) are connected by a water supply pipe (31) through a three-way valve; the water supply pipe (31) is also connected to the outlet of the three-way valve (32), and the cooling pipe (2) and the condenser pipe (23) are isolated from each other.

2. The cement stability boiling test chamber with a closed testing environment according to claim 1, characterized in that: The return water pipe (21) and the air outlet pipe (22) are both sealed and inserted into the box cover (4).

3. The cement stability boiling test chamber with a closed testing environment according to claim 1, characterized in that: The condenser pipe (23), the return water pipe (21), and the vent pipe (22) form a square-shaped integral U-shaped bend. The cooling pipe (2) is a transparent PVC pipe, and the lower end opening of the cooling pipe (2) is also sealed and inserted into the return water pipe (21).

4. The cement stability boiling test chamber with a closed testing environment according to claim 1, characterized in that: The boiling tank (1) is also stably equipped with a sample rack (12), which is a mesh frame.

5. The cement stability boiling test chamber with a closed testing environment according to claim 1, characterized in that: A glass tube level gauge (14) is also installed on the outside of the boiling tank (1). A temperature sensor is also installed inside the boiling tank (1).

6. The cement stability boiling test chamber with a closed testing environment according to claim 1, characterized in that: A pipe clamp (42) is provided on the top of the box cover (4). The pipe clamp (42) is a pipe clamp, and the cooling pipe (2) is stably tilted by the pipe clamp (42). The bottom inner side of the box cover (4) is a slope; A pressure relief valve is also provided on the top of the box cover (4).

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