True density instrument and constant temperature assembly thereof
By adding a temperature sensor to the constant temperature component of the true density meter to monitor and feedback the temperature status in the constant temperature box in real time, the problem of inability to observe the internal temperature in the prior art is solved, ensuring the accuracy of the detection results and the reliability of the instrument.
Patent Information
- Application Number
- CN202420671728.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The constant temperature components of existing true density meters cannot observe the internal temperature status in real time, which affects the accuracy of the detection results and is difficult to detect and deal with in time when the instrument components are damaged.
Add a temperature sensor to the constant temperature component of the true density meter to detect and feedback the temperature status in the constant temperature box in real time, judge whether the internal environment has reached the working temperature through the temperature sensor, and promptly discover abnormal situations inside the instrument to ensure the accuracy of detection and Security.
Real-time monitoring of the internal temperature status of the true density meter is realized, ensuring the accuracy of analysis and measurement, timely discovering and handling abnormal situations, reducing detection delays, and improving the reliability and efficiency of the instrument.
Smart Images
Figure CN222189058U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of true density meters, and in particular to a true density meter and a constant temperature component thereof. Background Art
[0002] The gas method true density analyzer is an instrument that uses a known gas as a probe to calibrate the skeleton volume of the sample (solid) being tested. The true density analyzer uses Bohr's law to determine the skeleton volume of the sample by measuring the reduction in the volume of the gas displaced in the test chamber of the true density analyzer after the sample is placed, and divides the mass of the sample to obtain the true density of the sample.
[0003] Bohr's law is used to calculate the change in gas volume in the test chamber of the true density analyzer before and after the sample is placed. In order to improve the accuracy of the test results, not only the temperature in the sample test chamber of the true density analyzer is required to be constant, but also the ambient temperature inside the instrument is required to be constant (because the change in the ambient temperature inside the instrument will cause inconsistent pressure changes in the gas in the fixed volume chamber). Therefore, the true density analyzer is usually set with a constant temperature component inside the instrument to ensure a constant ambient temperature inside the instrument.
[0004] However, the constant temperature components of existing true density meters, such as patent document CN203117070U, can only ensure that the heat flow circulates continuously in the internal environment of the instrument, thereby achieving a uniform and constant temperature of the environment. However, the actual temperature of the internal environment during the operation of the true density meter is difficult to observe. After turning on the heating and circulating fans, it is difficult to determine whether the internal environment has reached the temperature state required for operation. If the instrument components are damaged, they cannot be discovered in time, which has an adverse effect on the accuracy of the analysis and measurement results. Utility Model Content
[0005] In order to obtain the internal environment temperature data of the true density meter in time and ensure the accuracy of the detection results of the true density meter, the present application provides a true density meter and a constant temperature component thereof.
[0006] A constant temperature component of a true density meter provided to achieve the purpose of the utility model comprises:
[0007] Thermostat, heating device, temperature sensor and turbulence fan;
[0008] The heating device is installed on the inner wall of the thermostatic box, a sample chamber is provided in the thermostatic box, and the sample chamber and the heating device are respectively close to opposite ends of the thermostatic box;
[0009] The thermostatic box is also provided with a turbulent fan to promote the internal circulation of hot air in the thermostatic box. The detection end of the temperature sensor is located in the thermostatic box, and the detection end of the temperature sensor is arranged close to the sample chamber.
[0010] According to another aspect of the present application, a true density meter is provided, wherein the true density meter is provided with the aforementioned constant temperature component of the true density meter.
[0011] Compared with the existing true density meter, the constant temperature device cannot observe the temperature state inside the constant temperature box and whether the temperature in the temperature zone is consistent. The present application adds a temperature sensor to detect and provide real-time feedback on the temperature state inside the constant temperature box. The real-time detection results of the temperature sensor are used to determine whether the internal environment has reached the working temperature, thereby determining the earliest time point when subsequent analysis and detection operations can be implemented. Damage to the internal constant temperature components of the instrument can also be discovered and repaired in time, reducing delays in detection and analysis work; the internal temperature state can be observed in real time, and detection can be stopped in time if an abnormal state is found, and detection and analysis can be carried out again to ensure the analysis and measurement accuracy of the true density meter. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 A schematic structural diagram of a true density meter according to an embodiment of the present application is shown;
[0013] Figure 2 A structural schematic diagram of a true density meter according to an embodiment of the present application is shown.
[0014] Constant temperature box 100, upper cover 110, partition 120, mounting hole 121, heater 210, temperature control pipe 220, temperature sensor 300, turbulent fan 400, circulation controller 410, sample chamber 500, gas preheating chamber 600, quantitative chamber 700. DETAILED DESCRIPTION
[0015] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.
[0016] Among them, it should be understood that the directions or positional relationships indicated by terms such as "length", "width", "height", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0017] In addition, in order to better illustrate the present application, numerous specific details are provided in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.
[0018] The present application provides a constant temperature component of a true density meter, including a constant temperature box 100, a heating device, a temperature sensor 300 and a turbulence fan 400; the heating device is installed on the inner wall of the constant temperature box 100 and is located at the bottom of the constant temperature box 100, a sample cabin 500 is provided in the constant temperature box 100, the sample cabin 500 and the heating device are respectively close to the opposite ends of the constant temperature box 100, that is, the sample cabin is located at the top of the constant temperature box, close to the upper cover 110; a turbulence fan 400 is also provided in the constant temperature box 100 to promote the internal circulation of hot air in the constant temperature box 100, the detection end of the temperature sensor 300 is located in the constant temperature box 100, and the detection end of the temperature sensor 300 is arranged close to the sample cabin 500.
[0019] It should be noted that the present application does not specifically limit the way in which the temperature sensor 300 displays the measurement results, nor does it specifically limit the relative positional relationship between the temperature sensor 300 except the detection sensing end and the thermostat 100 and other components. As long as the temperature sensor 300 can be used to detect the ambient temperature in the thermostat 100 in real time and provide result feedback. The output end of the temperature sensor 300 can be connected to an external device for communication (either inside or outside the box); or a temperature sensor 300 with its own function of displaying measurement results is used, and the display surface passes through the thermostat 100 and is displayed on the outer wall; or the display result of the temperature sensor 300 is observed through the observation window of the thermostat 100. The temperature sensor 300 is located inside the thermostat 100, which specifically means that the detection probe is located in the environment to be detected inside the thermostat 100 and is close to the sample chamber 500.
[0020] It should be noted that the "turbine" in the turbine fan 400 refers to disturbing the airflow around the fan, driving and controlling the flow speed and direction of the airflow, thereby forming a continuous internal circulation constant temperature air path inside the thermostat 100. The turbine fan 400 is an axial flow fan, and the airflow direction driven by it is shown in the figure.
[0021] The present application arranges a sample chamber 500 to place samples to be tested and analyzed. The sample chamber 500 is a sealed cavity as a whole to facilitate degassing and adsorption operations of the samples in the chamber. The interior of the sample chamber 500 needs to provide a constant temperature environment for the samples inside it, and the constant temperature component of the true density meter provided in the present application is used to provide a constant temperature environment for the sample chamber 500 in the constant temperature box 100. A heating device is arranged to control the temperature rise of the air in the constant temperature box 100, so as to achieve and maintain the sample chamber 500 in the constant temperature box 100 at the working temperature environment. 500 and the heating device are arranged opposite to each other in order to make the sample chamber 500 as far away from the heating source as possible and be located in the middle of the circulating airflow path, so as to gradually heat up and cool down the sample chamber 500 to prevent the sample chamber 500 from being too close to the heat source. Sudden and sharp temperature rise will have an adverse effect on the service life of the sample chamber 500 and the accuracy of the sample test results. The turbulence fan 400 is arranged to drive and promote the circulation of hot air in the constant temperature box 100 to prevent local heat and local cold, which consumes a lot of energy and is ineffective, and cannot achieve constant temperature of various components (such as the sample chamber 500, the quantitative chamber and the preheating chamber).
[0022] Compared with the existing true density meter whose constant temperature device cannot observe the temperature state inside the constant temperature box 100, the present application adds a temperature sensor 300 to detect and provide real-time feedback of the temperature state inside the constant temperature box 100. The real-time detection result of the temperature sensor 300 is used to determine whether the internal environment has reached the working temperature, thereby determining the earliest time point when subsequent analysis and detection operations can be implemented. Damage to the internal constant temperature components of the instrument can also be discovered and repaired in time, reducing delays in detection and analysis work; the internal temperature state can be observed in real time, and detection can be stopped in time if an abnormal state is found, and detection and analysis can be carried out again to ensure the analysis and measurement accuracy of the true density meter.
[0023] In a possible implementation, more than two turbulence fans 400 are provided in the thermostat 100, and the two turbulence fans 400 are respectively close to the opposite ends of the sample chamber 500 and have opposite airflow directions. Further, a partition 120 is provided in the thermostat 100, the sample chamber 500 is located between the partition 120 and the upper cover 110, the partition 120 is provided with a mounting hole 121 matching the turbulence fan 400, the turbulence fan 400 around the sample chamber 500 is mounted on the partition 120 through the mounting hole 121, and the circulating heat flow uses the spacing between the rotating blades of the turbulence fan 400 and the side wall of the mounting hole 121, and the gaps between the multiple rotating blades as ventilation channels.
[0024] In a possible implementation, a turbulent fan 400 is arranged around the heating device to disperse and guide the hot airflow obtained by the heating device to other parts as quickly as possible, accelerate air circulation, and reduce the phenomenon of large temperature differences and slow temperature averaging in various areas of the box. Furthermore, multiple turbulent fans 400 are arranged around the heating device, and the turbulent fans 400 close to the center line of the box and away from the side walls of the box are radial fans. Through the cooperation of the radial fans, the heat flow is concentrated on the edge side walls of the box to form a circulating airflow, for example Figure 2 As shown in the figure, there are three spoiler fans 400 from left to right. The spoiler fan 400 on the left transfers the heat flow to the radial fan on the far right, and then the spoiler fan 400 on the far side guides the heat flow to the circulating heat flow. The spoiler fan 400 far from the center line of the box and close to the side wall of the box directly uses an axial flow fan to guide the heat flow to the circulating heat flow, for example Figure 2 As shown, the last two spoiler fans 400 from left to right. It should be noted that this application does not make specific restrictions on the number ratio, flow rate, and floor space of radial fans and axial fans. As long as the circulating heat flow can be kept away from the center of the box as much as possible, the heat flow can be evenly dispersed to all corners of the box to achieve uniform temperature in the box.
[0025] In a possible implementation, a circulation controller 410 is also included; the circulation controller 410 is electrically connected to the turbulence fan 400 to control the airflow circulation, and the air circulation state inside the true density meter is improved by changing the opening and closing, rotation speed and other operating states of the turbulence fan 400.
[0026] In a possible implementation, the heating device is provided with a heating controller, which is in communication with the temperature sensor 300. The heating controller adjusts the heating operation of the heating device according to the real-time temperature feedback from the temperature sensor 300, and flexibly adjusts the temperature state of the inner space of the true density meter.
[0027] In one possible implementation, the heating device includes a heater 210 and a thermostat, the thermostat includes a temperature control pipe 220, the temperature control pipe 220 is provided with an inlet and an outlet, the inlet and outlet of the temperature control pipe 220 both pass through the constant temperature box 100, the temperature control pipe 220 is arranged close to the heater 210 to adjust the temperature of the hot air flow around the heater 210, and the interior of the temperature control pipe 220 is suitable for circulating a heat transfer medium.
[0028] In a possible implementation, there are more than two temperature adjustment pipes 220 .
[0029] In a possible implementation, the thermostat 100 is provided with an opening and an upper cover 110, the upper cover 110 matches the opening, and one end of the upper cover 110 is hinged to the opening of the thermostat 100. An elastic part is provided on the side of the upper cover 110 facing the internal cavity of the thermostat 100, and the elastic part is located between the upper cover 110 and the side wall of the opening. The elastic deformation of the elastic part is used to ensure the air tightness of the connection between the upper cover 110 and the opening of the thermostat 100, prevent the constant temperature cycle heat flow turbulence caused by air leakage, and ensure the internal constant temperature and detection accuracy of the true density meter.
[0030] In one possible implementation, an observation window is provided on the side wall of the thermostatic box 100, and the observation window is arranged opposite to the turbulence fan 400 and the heating device, so that the operating status of each component inside the thermostatic box 100 can be intuitively observed during the sealing operation of the thermostatic box 100, and abnormal conditions can be discovered and handled in time.
[0031] In a possible implementation, the temperature control pipe 220 is a spiral pipe, and the heater 210 is sleeved inside the spiral of the temperature control pipe 220, that is, the temperature control pipe 220 is spirally wound around the heater 210, increasing the indirect contact area between the heat transfer medium and the heater 210 and accelerating the temperature control speed.
[0032] According to another aspect of the present application, a true density meter is provided, wherein the true density meter is provided with the aforementioned constant temperature component of the true density meter.
[0033] In a possible implementation, the true density meter not only includes the aforementioned constant temperature box 100, heating device, temperature sensor 300 and turbulent fan 400, but also is provided with vacuum equipment, gas preheating cabin 600 and quantitative cabin, the (controllable opening and closing) air extraction port of the sample cabin 500 is connected to the vacuum equipment, and the vacuum equipment is suitable for evacuating the internal sealed cavity of the sample cabin 500 into a vacuum environment. The air inlet of the gas preheating cabin 600 is connected to the gas source device, and the adsorption gas supplied thereto is preheated, the air outlet of the gas preheating cabin 600 is connected to the air inlet of the quantitative cabin, and the air outlet of the quantitative cabin is connected to the (controllable opening and closing) air inlet of the sample cabin 500, and the quantitative cabin can input the preheated gas into the quantitative cabin in a determined amount for adsorption treatment.
[0034] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A constant temperature component of a true density meter, characterized in that: include: Thermostat, heating device, temperature sensor and turbulence fan; The heating device is installed on the inner wall of the thermostatic box, a sample chamber is provided in the thermostatic box, and the sample chamber and the heating device are respectively close to opposite ends of the thermostatic box; The thermostatic box is also provided with a turbulent fan to promote the internal circulation of hot air in the thermostatic box. The detection end of the temperature sensor is located in the thermostatic box, and the detection end of the temperature sensor is arranged close to the sample chamber.
2. The constant temperature assembly of the true density meter according to claim 1, characterized in that: More than two turbulence fans are arranged in the constant temperature box.
3. The constant temperature assembly of the true density meter according to claim 2, characterized in that: The two turbulence fans are respectively close to two opposite ends of the sample chamber and have opposite airflow directions.
4. The constant temperature assembly of the true density meter according to claim 1, characterized in that: A turbulent fan is arranged around the heating device.
5. The constant temperature assembly of the true density meter according to claim 1, characterized in that: Also includes a loop controller; The circulation controller is electrically connected to the spoiler fan to control the airflow circulation.
6. The constant temperature assembly of the true density meter according to claim 1, characterized in that: The heating device is provided with a heating controller, and the heating controller is communicatively connected with the temperature sensor.
7. The constant temperature assembly of the true density meter according to claim 1, characterized in that: The heating device includes a heater and a thermostat, the thermostat includes a thermostat pipe, the thermostat pipe is provided with an inlet and an outlet, the inlet and outlet of the thermostat pipe both pass through the constant temperature box, the thermostat pipe is arranged close to the heater to adjust the temperature of the hot air flow around the heater, and the interior of the thermostat pipe is suitable for circulating a heat-conducting medium.
8. The constant temperature assembly of the true density meter according to claim 7, characterized in that: There are more than two temperature adjustment pipes.
9. The constant temperature assembly of the true density meter according to claim 1, characterized in that: The thermostatic box is provided with an opening and an upper cover, the upper cover matches the opening, and one end of the upper cover is hinged to the opening of the thermostatic box.
10. A true density meter, characterized in that: The true density meter is provided with a constant temperature component of the true density meter according to any one of claims 1-9.