CN112285269A - Constant temperature device for measuring combustion performance of building material - Google Patents
Constant temperature device for measuring combustion performance of building material Download PDFInfo
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- CN112285269A CN112285269A CN202011547027.4A CN202011547027A CN112285269A CN 112285269 A CN112285269 A CN 112285269A CN 202011547027 A CN202011547027 A CN 202011547027A CN 112285269 A CN112285269 A CN 112285269A
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Abstract
The invention provides a constant temperature device for measuring the combustion performance of building materials, which comprises a box body assembly, a control assembly, a constant temperature controller, a temperature sensing assembly and a circulating pump, wherein the box body assembly comprises a box body shell, an outer liquid containing part, an inner liquid containing part and a sample containing part; the outer liquid containing part is arranged in the box body shell, an outer containing space is formed by the outer liquid containing part and the box body shell, the control assembly and the thermostatic controller are both arranged in the outer containing space, the thermostatic controller is electrically connected with the control assembly, and the thermostatic controller is communicated with the outer liquid containing part; the inner liquid containing part and the outer liquid containing part form an inner containing space, the circulating pump is arranged in the inner containing space and is electrically connected with the control assembly, and the outer liquid containing part and the inner liquid containing part are communicated through the circulating pump; the inner side of the inner liquid containing part forms a sample cavity of the sample containing part; the temperature sensing assembly comprises a first temperature sensor arranged in the sample cavity and a second temperature sensor arranged in the outer liquid containing part.
Description
Technical Field
The invention relates to the technical field of building material combustion performance measurement, in particular to a constant temperature device for measuring the combustion performance of a building material.
Background
With the increasing requirements of the building field on the building energy-saving level, the wall body is generally required to be used for heat preservation in the building process of a house so as to improve the heat preservation effect, and the external wall heat preservation material is an essential raw material in the external wall heat preservation process as a building material. The external wall insulation material refers to a kind of insulation material used for building walls, and can be divided into an external wall insulation material, an internal wall insulation material and a roof insulation material according to the use position, and can be divided into an inorganic insulation material and an organic insulation material according to the internal components of the insulation material.
In order to ensure that building materials such as external wall insulation materials meet the national building energy-saving requirements, various performances of the building materials such as the external wall insulation materials need to be detected, wherein one important performance is combustion performance. However, when the combustion heat value of the combustion performance of the building material is measured at present, the temperature change of the environment is not stable, and the result accuracy of the combustion performance test is influenced.
Disclosure of Invention
The invention aims to provide a constant temperature device for measuring the combustion performance of a building material, which aims to solve the technical problem that the accuracy of a combustion performance test result is influenced by unstable environmental temperature change when the building material is subjected to a combustion heat value test in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the constant temperature device for measuring the combustion performance of the building material comprises a box body assembly, a control assembly, a constant temperature controller, a temperature sensing assembly and a circulating pump, wherein the box body assembly comprises a box body shell, an outer liquid containing part, an inner liquid containing part and a sample containing part;
the outer liquid accommodating part is arranged in the box body shell, an outer accommodating space is formed by the outer liquid accommodating part and the box body shell, the control assembly and the thermostatic controller are both arranged in the outer accommodating space, the thermostatic controller is electrically connected with the control assembly, and the thermostatic controller is communicated with the outer liquid accommodating part so as to realize the thermostatic control of the liquid in the outer liquid accommodating part;
a first cavity is formed on the inner side of the outer liquid containing part, the inner liquid containing part is arranged in the first cavity, an inner containing space is formed by the inner liquid containing part and the outer liquid containing part, the circulating pump is arranged in the inner containing space and is electrically connected with the control assembly, the outer liquid containing part and the inner liquid containing part are communicated through the circulating pump so as to realize the circulation of liquid in the outer liquid containing part and the inner liquid containing part, and a sample cavity of the sample containing part is formed on the inner side of the inner liquid containing part;
the temperature sensing assembly comprises at least one first temperature sensor and at least one second temperature sensor, the first temperature sensor is arranged in the sample containing cavity and electrically connected with the control assembly, and the second temperature sensor is arranged in the outer liquid containing part and electrically connected with the control assembly.
In one embodiment, the inner liquid containing portion comprises a first inner wall and a first outer wall, the first outer wall and the first inner wall forming an inner liquid containing chamber for containing liquid, the inner side of the first inner wall forming the sample chamber;
the outer liquid containing part comprises a second inner wall and a second outer wall, the second outer wall and the second inner wall form an outer liquid containing cavity for containing liquid, and the second inner wall and the first outer wall form the inner containing space;
the inner liquid containing cavity is communicated with the outer liquid containing cavity through the circulating pump.
In one embodiment, the thermostatic device further comprises a vacuum pump, and the vacuum pump is arranged in the outer accommodating space and is electrically connected with the control component;
the box shell is provided with an air outlet part, the air outlet of the vacuum pump corresponds to the air outlet part, and the air suction port of the vacuum pump is communicated with the internal containing space so as to realize vacuum pumping of the internal containing space.
In one embodiment, the first outer wall is provided with a first liquid inlet and a first liquid outlet, the second inner wall is provided with a second liquid inlet and a second liquid outlet, the first liquid outlet is communicated with the second liquid inlet, and the first liquid inlet is communicated with the second liquid outlet through the circulating pump.
In one embodiment, the first liquid inlet is located below the first liquid outlet and near the bottom of the first outer wall, and the second liquid outlet is located below the second liquid inlet and near the bottom of the second inner wall.
In one embodiment, the first liquid inlet and the first liquid outlet are opened on the same side of the first outer wall, and the second liquid inlet and the second liquid outlet are opened on the same side of the second inner wall;
alternatively, the first and second electrodes may be,
the first liquid inlet and the first liquid outlet are respectively arranged at the opposite sides of the first outer wall, and the second liquid inlet and the second liquid outlet are respectively arranged at the opposite sides of the second inner wall.
In one embodiment, the second outer wall is provided with a third liquid inlet and a third liquid outlet, and the third liquid inlet and the third liquid outlet are both communicated with the thermostatic controller so as to realize temperature control of the liquid in the outer liquid cavity by the thermostatic controller;
the third liquid inlet is positioned below the third liquid outlet and close to the bottom of the second outer wall;
the third liquid inlet and the third liquid outlet are arranged on the same side of the second outer wall, or the third liquid inlet and the third liquid outlet are arranged on the opposite side of the second outer wall.
In one embodiment, the thermostatic device further comprises a water level detection assembly comprising at least one inner water level detection sensor and at least one outer water level detection sensor;
the first liquid inlet and/or the first liquid outlet are/is provided with the inner water level detection sensor;
and the third liquid inlet and/or the third liquid outlet are/is provided with the outer water level detection sensor.
In one embodiment, the box body shell is provided with a fourth liquid inlet for connecting with an external water source and a fourth liquid outlet for allowing liquid in the outer liquid containing cavity to flow out, the fourth liquid inlet is communicated with the third liquid inlet, and the fourth liquid outlet is communicated with the third liquid outlet;
the first liquid inlet, the first liquid outlet, the second liquid inlet, the second liquid outlet, the third liquid inlet, the third liquid outlet, the fourth liquid inlet and the fourth liquid outlet are all provided with electromagnetic valves, and the electromagnetic valves are electrically connected with the control assembly.
In one embodiment, the sample accommodating portion is further provided with a cover plate which can be opened and closed relative to the sample accommodating chamber, a heat insulating layer is arranged on the surface of the cover plate facing the sample accommodating chamber, and an abutting portion made of an elastic material is arranged on the free end surface of the cover plate.
The thermostat for measuring the combustion performance of the building material has the advantages that: the constant temperature device provided by the invention adopts a double-layer liquid accommodating mode, the liquid in the external liquid accommodating part is subjected to temperature adjustment through the constant temperature controller, and the temperature of the sample accommodating cavity is subjected to temperature control through the liquid in the internal liquid accommodating part, so that the temperature of the sample accommodating cavity can be always kept in a preset range, the temperature control precision is high, a good and stable environment can be provided for building materials placed in the sample accommodating cavity, and the result accuracy of a combustion performance experiment is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a thermostat for measuring combustion performance of a building material according to an embodiment of the present invention;
FIG. 2 is a first schematic view of the internal structure of a thermostat for measuring the combustion performance of a building material according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of a thermostat for measuring the combustion performance of a building material according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the internal structure of a thermostat for measuring the combustion performance of a building material, provided by an embodiment of the invention;
fig. 5 is a schematic circuit structure diagram of a thermostat for measuring combustion performance of a building material according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10-a constant temperature device;
11-a box assembly;
111-a box housing;
1111-air outlet part;
1112-a fourth loading port;
1113-a fourth liquid outlet;
112-an outer liquid containment part;
1121 — a second inner wall;
1122-a second outer wall;
1123-an outer liquid cavity;
1124-a second liquid inlet;
1125-a second outlet;
1126-third liquid inlet;
1127-a third liquid outlet;
113-an inner liquid containment part;
1131 — a first inner wall;
1132 — a first outer wall;
1133-inner liquid cavity;
1134-a first liquid inlet;
1135 — a first exit port;
114-a sample containment portion;
1141-a sample chamber;
1142-a cover plate;
1143, a thermal insulation layer;
1144-an abutment;
1145-a placing table;
115-an outer containment space;
116-content placement space;
12-a control assembly;
13-a thermostatic controller;
14-a temperature sensing component;
141-a first temperature sensor;
142-a second temperature sensor;
15-a circulation pump;
16-a vacuum pump;
17-a solenoid valve;
181-internal water level detection sensor;
182-external water level detection sensor;
19-display assembly.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Referring to fig. 1, the present embodiment provides a thermostat 10 for building material combustion performance measurement, and the thermostat 10 can provide a constant temperature environment for building materials (e.g., thermal insulation materials) subjected to combustion performance combustion heat value tests. Building materials refer to a single substance or a mixture of several substances dispersed uniformly, such as metal, stone, wood, concrete, uniformly dispersed mineral wool, polymers, etc. The heat of combustion is the amount of heat generated by the combustion of a unit mass of material, expressed in J/kg. Of course, in other embodiments, the thermostat 10 may be used to store other items, and is not limited to the above.
Referring to fig. 1 and 2, the thermostat device 10 includes a tank assembly 11, a control assembly 12, a thermostat controller 13, a temperature sensing assembly 14, and a circulation pump 15, and the tank assembly 11 includes a tank housing 111, an outer liquid containing portion 112, an inner liquid containing portion 113, and a sample containing portion 114. The outer liquid container 112 is disposed in the tank housing 111, the outer liquid container 112 and the tank housing 111 form an outer container 115, and the control unit 12 and the thermostat 13 are disposed in the outer container 115. The thermostat 13 is electrically connected to the control unit 12, and the thermostat 13 is communicated with the outer liquid container 112 to control the liquid in the outer liquid container 112. The inner side of the outer liquid containing part 112 forms a first cavity, the inner liquid containing part 113 is disposed in the first cavity, and the inner liquid containing part 113 and the outer liquid containing part 112 form an inner containing space 116. The circulation pump 15 is disposed in the inner accommodating space 116 and electrically connected to the control assembly 12, the outer liquid accommodating portion 112 and the inner liquid accommodating portion 113 are communicated with each other by the circulation pump 15, so as to realize the circulation of the liquid in the outer liquid accommodating portion 112 and the inner liquid accommodating portion 113, and the sample chamber 1141 of the sample accommodating portion 114 is formed inside the inner liquid accommodating portion 113. The temperature sensing assembly 14 includes at least one first temperature sensor 141 and at least one second temperature sensor 142, the first temperature sensor 141 is disposed in the sample cavity 1141 and electrically connected to the control assembly 12, and the second temperature sensor 142 is disposed in the outer liquid receptacle portion 112 and electrically connected to the control assembly 12.
In this embodiment, the liquid may be water, or may be other types of liquid; the thermostat 13 may be any existing thermostat that can be temperature controlled; the control assembly 12 is used to control the various components in the thermostat 10 to achieve proper operation of the thermostat 10. Referring to fig. 2 and fig. 5, for example, the control component 12 may obtain temperature data of the second temperature sensor 142 in the temperature sensing component 14, and control the thermostatic controller 13 according to the temperature data, so that the thermostatic controller 13 can heat or cool the liquid in the external liquid containing part 112, so that the liquid temperature of the thermostatic device 10 is controlled within a preset range; the control assembly 12 can acquire temperature data from the first temperature sensor 141 of the temperature sensing assembly 14 and control the circulation pump 15 based on the temperature data to circulate the liquid in the outer liquid reservoir 112 and the inner liquid reservoir 113, thereby controlling the temperature of the sample cavity 1141. When the temperature of the sample cavity 1141 meets the preset requirement, the building material can be placed in the sample cavity 1141 for the combustion heat value test, and the control component 12 can continuously control the thermostatic controller 13 and the circulating pump 15 according to the acquired temperature data of the first temperature sensor 141 and the second temperature sensor 142, so that the temperature of the sample cavity 1141 can be always kept in the preset temperature range.
The thermostat device 10 provided by the embodiment has at least the following beneficial effects: the thermostat device 10 that this embodiment provided adopts the mode of double-deck liquid holding, carry out temperature adjustment through the liquid of thermostatic control ware 13 external liquid holding portion 112 to carry out temperature control through the liquid of interior liquid holding portion 113 to the temperature of sample appearance chamber 1141, thereby can ensure that the temperature of sample appearance chamber 1141 can remain throughout in predetermineeing the scope, temperature control precision is high, thereby can provide good and stable environment for building materials such as insulation material placed in the sample appearance intracavity, help improving the result accuracy of combustion performance experiment.
Further, the number and location of the temperature sensors in the temperature sensing assembly 14 can be set as desired. Referring to fig. 2, for example, the number of first temperature sensors 141 and second temperature sensors 142 may be one for monitoring the temperature of sample cavity 1141 and outer liquid reservoir 112, respectively. For another example, the number of the first temperature sensors 141 may be multiple and distributed at various positions (e.g., at the bottom, the middle, and near the opening) in the sample cavity 1141, so as to obtain the temperatures at different positions in the sample cavity 1141, so that the control assembly 12 can better control various components. The second temperature sensor 142 may be distributed at various locations in the outer liquid reservoir 112, so that the temperature of different locations in the outer liquid reservoir 112 can be obtained for better control of various components by the control assembly 12. The first temperature sensor 141 and the second temperature sensor 142 are both semiconductor sensors.
Referring to fig. 2, further, the inner liquid container 113 includes a first inner wall 1131 and a first outer wall 1132, the first outer wall 1132 and the first inner wall 1131 form an inner liquid container 1133 for containing liquid, and the inner side of the first inner wall 1131 forms a sample container 1141. In this embodiment, the first inner wall 1131 may be made of a metal material with good thermal conductivity, for example, aluminum or copper, which can ensure rapid conduction of heat between the sample cavity 1141 and the liquid in the inner liquid cavity 1133, so that the temperature of the sample cavity 1141 and the temperature of the liquid in the inner liquid cavity 1133 can be rapidly consistent. The first outer wall 1132 may be made of a heat insulating material, so that heat exchange between the liquid in the inner liquid cavity 1133 and the inner containing space 116 may be avoided, which is beneficial to improving the stability of the temperature of the liquid in the inner liquid cavity 1133.
The outer liquid containing portion 112 includes a second inner wall 1121 and a second outer wall 1122, the second outer wall 1122 and the second inner wall 1121 form an outer liquid containing cavity 1123 for containing liquid, and the second inner wall 1121 and the first outer wall 1132 form an inner containing space 116. In this embodiment, both the second inner wall 1121 and the second outer wall 1122 may be made of a heat insulating material, and may insulate heat of the liquid in the outer liquid containing cavity 1123, which is beneficial to improving the stability of the temperature of the liquid in the outer liquid containing cavity 1123. The inner liquid cavity 1133 is communicated with the outer liquid cavity 1123 through the circulating pump 15, so that the liquid in the inner liquid cavity 1133 and the liquid in the outer liquid cavity 1123 can be ensured to circulate, and the temperature of the liquid in the inner liquid cavity 1133 and the temperature of the liquid in the outer liquid cavity 1123 can be rapidly consistent. In this embodiment, the volume of the outer liquid cavity 1123 is greater than the volume of the inner liquid cavity 1133, for example, the volume of the outer liquid cavity 1123 may be 2 to 5 times the volume of the inner liquid cavity 1133, so as to ensure that the temperature of the liquid in the inner liquid cavity 1133 may be rapidly kept consistent with the temperature of the liquid in the outer liquid cavity 1123, thereby improving the heat preservation effect.
Referring to fig. 3, in order to further improve the heat preservation effect of the thermostatic device 10, the thermostatic device 10 further includes a vacuum pump 16, and the vacuum pump 16 is disposed in the outer accommodating space 115 and electrically connected to the control assembly 12. The box body shell 111 is provided with an air outlet portion 1111, an air outlet of the vacuum pump 16 corresponds to the air outlet portion 1111, and an air suction opening of the vacuum pump 16 is communicated with the inner containing space 116 through a pipeline so as to realize vacuum pumping of the inner containing space 116. By evacuating the inner accommodating space 116 by the vacuum pump 16, the amount of the medium in the inner accommodating space 116 can be greatly reduced, and heat transfer through the medium is avoided, so that heat preservation of the liquid in the inner liquid cavity 1133 is facilitated, and the heat preservation effect of the constant temperature device 10 is further improved.
Further, first inlet 1134 and first liquid outlet 1135 have been seted up to first outer wall 1132, and second inlet 1124 and second liquid outlet 1125 have been seted up to second inner wall 1121, and first liquid outlet 1135 and second inlet 1124 pass through the pipeline intercommunication, and first inlet 1134 and second liquid outlet 1125 pass through circulating pump 15 and communicate. Liquid in the outer liquid cavity 1123 enters the inner liquid cavity 1133 through the second liquid outlet 1125 and the first liquid inlet 1134, and liquid in the inner liquid cavity 1133 enters the outer liquid cavity 1123 through the first liquid outlet 1135 and the second liquid inlet 1124, so that liquid circulation is realized.
The positions of first inlet port 1134, first outlet port 1135, second inlet port 1124 and second outlet port 1125 may be set as desired.
In one embodiment, first inlet port 1134 is located below first outlet port 1135 and near the bottom of first outer wall 1132, and second outlet port 1125 is located below second inlet port 1124 and near the bottom of second inner wall 1121, so that liquid flows in from the bottom of inner liquid cavity 1133 and flows out from the top, facilitating sufficient heat exchange between inner liquid cavity 1133 and sample cavity 1141. Of course, in other embodiments, the first inlet port 1134 may be located above the first outlet port 1135, or the first inlet port 1134 and the first outlet port 1135 may be located at the same horizontal position; accordingly, the second liquid outlet 1125 may be located above the second liquid inlet 1124, or the second liquid outlet 1125 and the second liquid inlet 1124 may be located at the same level.
In one embodiment, first inlet port 1134 and first outlet port 1135 are opened at the same side of first outer wall 1132, and second inlet port 1124 and second outlet port 1125 are opened at the same side of second inner wall 1121, and correspond to first outlet port 1135 and first inlet port 1134, respectively, so as to facilitate connection via a pipeline.
In one embodiment, first inlet port 1134 and first outlet port 1135 are respectively opened on opposite sides of first outer wall 1132, and second inlet port 1124 and second outlet port 1125 are respectively opened on opposite sides of second inner wall 1121, and respectively correspond to first outlet port 1135 and first inlet port 1134, so as to facilitate connection through a pipeline.
Further, a third liquid inlet 1126 and a third liquid outlet 1127 are formed in the second outer wall 1122, and both the third liquid inlet 1126 and the third liquid outlet 1127 are communicated with the thermostatic controller 13, so that temperature control of liquid in the external liquid cavity 1123 is realized through the thermostatic controller 13.
The positions of the third inlet 1126 and the third outlet 1127 may be set as desired. For example, the third liquid inlet 1126 is located below the third liquid outlet 1127 and near the bottom of the second outer wall 1122, so that the liquid flows in from the bottom of the outer liquid cavity 1123 and flows out from the upper portion, which is beneficial to heat exchange between the liquids in the outer liquid cavity 1123 and rapid temperature uniformity. For another example, the third inlet 1126 and the third outlet 1127 are disposed on the same side of the second outer wall 1122. For another example, a third inlet 1126 and a third outlet 1127 open on opposite sides of second outer wall 1122. Of course, in other embodiments, the positions of the third liquid inlet 1126 and the third liquid outlet 1127 may be set in other manners, and are not limited to the above-mentioned cases.
Referring to fig. 3, in order to add or replace the liquid in the thermostatic device 10, the box housing 111 further has a fourth liquid inlet 1112 connected to an external water source and a fourth liquid outlet 1113 for allowing the liquid in the outer liquid cavity 1123 to flow out, the fourth liquid inlet 1112 is communicated with the third liquid inlet 1126, and the fourth liquid outlet 1113 is communicated with the third liquid outlet 1127. It is understood that in order to facilitate the communication between the fourth loading port 1112 and the third loading port 1126, the fourth loading port 1112 is disposed at a position corresponding to the third loading port 1126; in order to facilitate the communication between the fourth liquid outlet port 1113 and the third liquid outlet port 1127, the fourth liquid outlet port 1113 is disposed at a position corresponding to the third liquid outlet port 1127.
Referring to fig. 3 and 5, in order to control the flow of the liquid, an electromagnetic valve 17 is disposed at each of the liquid inlet and the liquid outlet, and the electromagnetic valve 17 is electrically connected to the control assembly 12 to control each of the liquid inlet and the liquid outlet. Specifically, the first liquid inlet 1134, the first liquid outlet 1135, the second liquid inlet 1124, the second liquid outlet 1125, the third liquid inlet 1126, the third liquid outlet 1127, the fourth liquid inlet 1112 and the fourth liquid outlet 1113 are all provided with solenoid valves 17. When liquid needs to be injected into the thermostatic device 10, the control assembly 12 controls the fourth liquid outlet 1113 to be closed and the fourth liquid inlet 1112 to be opened, and at this time, the liquid flows into the outer liquid cavity 1123; when the liquid amount in the outer liquid cavity 1123 reaches the requirement, the fourth liquid inlet 1112 is controlled to be closed. When the temperature of the liquid in the external liquid cavity 1123 needs to be controlled (for example, heated or cooled) separately, the control component 12 controls the second liquid inlet 1124 and the second liquid outlet 1125 to be closed, controls the third liquid inlet 1126 and the third liquid outlet 1127 to be opened, and controls the thermostat 13 to heat the liquid in the external liquid cavity 1123 according to the temperature data collected by the second temperature sensor 142. When the temperature of the liquid in the outer liquid cavity 1123 reaches the preset temperature, the first liquid inlet 1134, the first liquid outlet 1135, the second liquid inlet 1124 and the second liquid outlet 1125 are controlled to be opened, and the circulating pump 15 is controlled to work, so that the liquid in the outer liquid cavity 1123 enters the inner liquid cavity 1133, the circulation of the liquid is realized, the temperature of the sample cavity 1141 is adjusted and maintained at the preset temperature, and the working states of the constant temperature controller 13 and the circulating pump 15 are controlled according to the temperature data collected by the first temperature sensor 141. Of course, in the actual working process, the control assembly 12 can control the working state of each component according to the actual requirement, and is not limited to the above form, and is not limited herein.
Referring to fig. 3 and 5, further, in order to better control the operating conditions of the various components, the water levels in the inner fluid chamber 1133 and the outer fluid chamber 1123 need to be monitored. In this embodiment, the thermostat device 10 further includes a water level detection assembly including at least one inner water level detection sensor 181 and at least one outer water level detection sensor 182, and both the inner water level detection sensor 181 and the outer water level detection sensor 182 may be semiconductor sensors, such as infrared sensors and the like. The internal water level detecting sensor 181 may be disposed at the first inlet 1134, and may be disposed at the first outlet 1135; an internal water level detection sensor 181 may be provided at both the first inlet port 1134 and the first outlet port 1135. The external water level detection sensor 182 may be disposed at the third liquid inlet 1126 and may be disposed at the third liquid outlet 1127; an external water level detection sensor 182 may be provided at both the third inlet 1126 and the third outlet 1127.
Further, the thermostat device 10 further comprises a display component 19, and the display component 19 is disposed on the outer surface of the box body casing, electrically connected with the control component 12, and used for displaying information such as temperature. The display module 19 can also have a touch function, and can facilitate users to set indexes such as temperature, so that target temperature can be set, and setting requirements of different temperatures can be met. Of course, in other embodiments, the thermostat device 10 may also include a key assembly disposed on an outer surface of the housing, the key assembly including a plurality of buttons for controlling temperature and the like.
Further, the sample holding portion 114 further includes a cover 1142 capable of opening and closing with respect to the sample chamber 1141, a thermal insulation layer 1143 made of thermal insulation material is disposed on a surface of the cover 1142 facing the sample chamber 1141, and an abutting portion 1144 made of elastic material is disposed on a free end surface of the cover 1142. In order to ensure that the cover plate 1142 can be tightly buckled, the free end face of the cover plate 1142 is further provided with a buckle, the buckle corresponding to the first inner wall 1131 through the buckle is connected in a buckled mode, and meanwhile due to the abutting connection of the abutting connection portion, the buckled mode is more tight, and a better sealing effect and a heat preservation effect are achieved.
Referring to fig. 4, further, the sample cavity 1141 is further provided with a material placing table 1145, so as to provide support for the building materials to be stored, facilitate storage of the building materials, and perform a combustion experiment on the building materials. Of course, the stand 1145 may be removed as needed during the heat of combustion test of the household material.
The thermostat device 10 provided in this embodiment adopts a double-layer liquid accommodating manner, adjusts the temperature of the liquid in the external liquid accommodating portion 112 through the thermostat controller 13, controls the temperature of the sample cavity 1141 through the liquid in the internal liquid accommodating portion 113, and evacuates the accommodating space 116 through the vacuum pump 16, thereby ensuring that the temperature of the sample cavity 1141 can be always kept within a preset range. The division of the thermometer is accurate to at least 0.01K and the reading is guaranteed to be within 0.005K to ensure that the resolution of the temperature measurement is at 0.005K. The temperature difference between the liquid in the inner liquid cavity 1133 and the liquid in the outer liquid cavity 1123 is not more than 0.01 ℃, so that a stable test environment can be provided for the building material, and the accuracy of the result of the combustion performance test is improved. Meanwhile, the temperature range of the constant temperature device 10 provided by the embodiment is 13-33 ℃ (for example, 21-25 ℃ required by building materials can be provided), and the adjustable temperature range is large, so that different heat preservation requirements are met.
In this embodiment, the capacity of the sample cavity 1141 may be set to 250-350 mL, and the inner wall of the sample cavity may bear the erosion of the combustion products of the building materials, for example, may resist the corrosion caused by acidic substances generated by combustion, in order to meet the requirements of the combustion heat value test.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The constant temperature device for measuring the combustion performance of the building material is characterized by comprising a box body assembly, a control assembly, a constant temperature controller, a temperature sensing assembly and a circulating pump, wherein the box body assembly comprises a box body shell, an outer liquid containing part, an inner liquid containing part and a sample containing part;
the outer liquid accommodating part is arranged in the box body shell, an outer accommodating space is formed by the outer liquid accommodating part and the box body shell, the control assembly and the thermostatic controller are both arranged in the outer accommodating space, the thermostatic controller is electrically connected with the control assembly, and the thermostatic controller is communicated with the outer liquid accommodating part so as to realize the thermostatic control of the liquid in the outer liquid accommodating part;
a first cavity is formed on the inner side of the outer liquid containing part, the inner liquid containing part is arranged in the first cavity, an inner containing space is formed by the inner liquid containing part and the outer liquid containing part, the circulating pump is arranged in the inner containing space and is electrically connected with the control assembly, the outer liquid containing part and the inner liquid containing part are communicated through the circulating pump so as to realize the circulation of liquid in the outer liquid containing part and the inner liquid containing part, and a sample cavity of the sample containing part is formed on the inner side of the inner liquid containing part;
the temperature sensing assembly comprises at least one first temperature sensor and at least one second temperature sensor, the first temperature sensor is arranged in the sample containing cavity and electrically connected with the control assembly, and the second temperature sensor is arranged in the outer liquid containing part and electrically connected with the control assembly.
2. The thermostat device for building material combustion performance measurement according to claim 1, wherein the inner liquid containing portion includes a first inner wall and a first outer wall, the first outer wall and the first inner wall forming an inner liquid containing chamber for containing a liquid, an inner side of the first inner wall forming the sample chamber;
the outer liquid containing part comprises a second inner wall and a second outer wall, the second outer wall and the second inner wall form an outer liquid containing cavity for containing liquid, and the second inner wall and the first outer wall form the inner containing space;
the inner liquid containing cavity is communicated with the outer liquid containing cavity through the circulating pump.
3. The thermostat for building material combustion performance measurement according to claim 2, wherein the thermostat further comprises a vacuum pump disposed in the outer receiving space and electrically connected to the control assembly;
the box shell is provided with an air outlet part, the air outlet of the vacuum pump corresponds to the air outlet part, and the air suction port of the vacuum pump is communicated with the internal containing space so as to realize vacuum pumping of the internal containing space.
4. The thermostat for building material combustion performance measurement as claimed in claim 2, wherein the first outer wall is provided with a first liquid inlet and a first liquid outlet, the second inner wall is provided with a second liquid inlet and a second liquid outlet, the first liquid inlet is communicated with the second liquid inlet, and the first liquid inlet is communicated with the second liquid outlet through the circulating pump.
5. The thermostat device for building material combustion performance measurement according to claim 4, wherein the first liquid inlet is located below the first liquid outlet and near the bottom of the first outer wall, and the second liquid outlet is located below the second liquid inlet and near the bottom of the second inner wall.
6. The thermostat for building material combustion performance measurement according to claim 4, wherein the first liquid inlet and the first liquid outlet are opened on the same side of the first outer wall, and the second liquid inlet and the second liquid outlet are opened on the same side of the second inner wall;
alternatively, the first and second electrodes may be,
the first liquid inlet and the first liquid outlet are respectively arranged at the opposite sides of the first outer wall, and the second liquid inlet and the second liquid outlet are respectively arranged at the opposite sides of the second inner wall.
7. The thermostatic device for measuring the combustion performance of a building material as defined in claim 4, wherein the second outer wall defines a third liquid inlet and a third liquid outlet, and both the third liquid inlet and the third liquid outlet are communicated with the thermostatic controller to control the temperature of the liquid in the outer liquid cavity through the thermostatic controller;
the third liquid inlet is positioned below the third liquid outlet and close to the bottom of the second outer wall;
the third liquid inlet and the third liquid outlet are arranged on the same side of the second outer wall, or the third liquid inlet and the third liquid outlet are arranged on the opposite side of the second outer wall.
8. The thermostat for building material combustion performance measurement according to claim 7, wherein the thermostat further comprises a water level detection assembly including at least one inner water level detection sensor and at least one outer water level detection sensor;
the first liquid inlet and/or the first liquid outlet are/is provided with the inner water level detection sensor;
and the third liquid inlet and/or the third liquid outlet are/is provided with the outer water level detection sensor.
9. The thermostat for measuring the combustion performance of building materials as claimed in claim 7, wherein the box housing is provided with a fourth inlet for connecting with an external water source and a fourth outlet for letting the liquid in the external liquid cavity flow out, the fourth inlet is communicated with the third inlet, and the fourth outlet is communicated with the third outlet;
the first liquid inlet, the first liquid outlet, the second liquid inlet, the second liquid outlet, the third liquid inlet, the third liquid outlet, the fourth liquid inlet and the fourth liquid outlet are all provided with electromagnetic valves, and the electromagnetic valves are electrically connected with the control assembly.
10. The thermostat for building material combustion performance measurement according to any one of claims 1 to 9, wherein the sample accommodating chamber is further provided with a cover plate that can be opened and closed with respect to the sample accommodating chamber, a heat insulating layer is provided on a surface of the cover plate facing the sample accommodating chamber, and an abutting portion made of an elastic material is provided on a free end surface of the cover plate.
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| CN202011547027.4A CN112285269A (en) | 2020-12-24 | 2020-12-24 | Constant temperature device for measuring combustion performance of building material |
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| CN202011547027.4A CN112285269A (en) | 2020-12-24 | 2020-12-24 | Constant temperature device for measuring combustion performance of building material |
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Application publication date: 20210129 |