阅读说明：本技术 一种运动条件下热管工作特性实验研究装置及方法 (Device and method for experimental study of working characteristics of heat pipe under motion condition ) 是由 秋穗正 孙浩 王成龙 田文喜 苏光辉 于 2020-07-07 设计创作，主要内容包括：本发明公开了一种运动条件下热管工作特性实验研究装置及方法,该装置包括机械臂装置、夹持部件、热管、热电偶、数据采集卡、远程计算机和电加热系统；通过控制机械臂装置各个转轴进行转动,实现倾斜、摇摆、起伏、振动等周期性或非周期性的运动条件；机械臂的末端与夹持部件底座相连；热管固定在热管夹持部件中心圆孔内,使得热管可以随着机械臂装置同步运动；热电偶固定于热管外壁面,并与数据采集卡相连；数据采集卡将数据传输至远程计算机；热管一端由加热系统加热,提供热管运行所需热功率。本发明通过运动条件模拟平台夹持热管同步运动,并通过测量热管壁面温度的变化规律,为研究运动条件下热管的启动、换热等工作特性提供了有效可行的方案。(The invention discloses a device and a method for experimental study of the working characteristics of a heat pipe under a motion condition, wherein the device comprises a mechanical arm device, a clamping part, the heat pipe, a thermocouple, a data acquisition card, a remote computer and an electric heating system; the mechanical arm device is controlled to rotate by each rotating shaft, so that periodic or aperiodic motion conditions such as inclination, swing, fluctuation, vibration and the like are realized; the tail end of the mechanical arm is connected with the clamping part base; the heat pipe is fixed in a central circular hole of the heat pipe clamping part, so that the heat pipe can synchronously move along with the mechanical arm device; the thermocouple is fixed on the outer wall surface of the heat pipe and is connected with the data acquisition card; the data acquisition card transmits data to a remote computer; one end of the heat pipe is heated by a heating system, so that heat power required by the operation of the heat pipe is provided. The invention provides an effective and feasible scheme for researching the working characteristics of the heat pipe such as starting, heat exchange and the like under the motion condition by simulating the synchronous motion of the heat pipe clamped by the platform under the motion condition and measuring the change rule of the wall surface temperature of the heat pipe.)

1. The utility model provides a heat pipe working characteristic experimental research device under motion condition which characterized in that: comprises a mechanical arm device (1), a clamping part (2), a heat pipe (3), a thermocouple (4), a data acquisition card (5), a remote computer (6) and an electric heating system (7); the mechanical arm device (1) comprises a plurality of groups of rotating shafts, and the tilting, swinging, fluctuating and periodic or aperiodic motion of the mechanical arm is realized by controlling the rotating shafts of the mechanical arm device (1) to rotate; the tail end of the mechanical arm device (1) is connected with a base (2-2) of the clamping part (2) through a flange; the heat pipe (3) is fixed in a central circular hole (2-1) of the clamping part (2), so that the heat pipe (3) and the clamping part (2) can synchronously move along with the mechanical arm device (1); the thermocouple (4) is fixed on the outer wall surface of the heat pipe (3) and is connected with the data acquisition card (5) to realize the measurement of the wall surface temperature of the heat pipe under the motion condition; the data acquisition card (5) transmits the data to a remote computer (6) for recording and storing; the electric heating system (7) is composed of a voltage regulator (7-1) and a heating wire (7-2) connected with the voltage regulator (7-1), and the heating wire (7-2) is wound at one end of the heat pipe (3) to provide heat power required by the operation of the heat pipe.

2. The experimental research device for the working characteristics of the heat pipe under the motion condition as claimed in claim 1, wherein: the mechanical arm device (1) is provided with six rotating shafts which are respectively driven by a motor, and translation and rotation along X, Y and Z coordinate axes are realized by controlling the rotating amplitude and speed of each rotating shaft, and the maximum radius of the movement range is 3 meters.

3. The experimental research device for the working characteristics of the heat pipe under the motion condition as claimed in claim 1, wherein: the clamping part (2) is made of stainless steel, the clamping part base (2-2) is connected with the flange, and the heat pipe (3) penetrates through the central circular hole (2-1) and is compressed through the bolt to play a fixing role.

4. The experimental research device for the working characteristics of the heat pipe under the motion condition as claimed in claim 1, wherein: the heat pipe (3) is a high-temperature heat pipe, an alkali metal working medium is arranged inside the heat pipe, the diameter of the heat pipe is not more than 5 cm, and the length of the heat pipe is not more than 3 m.

5. The experimental research device for the working characteristics of the heat pipe under the motion condition as claimed in claim 1, wherein: the electric heating system (7) realizes power regulation required by the experiment, and the experiment power does not exceed 15 kW.

6. The experimental method of the experimental research device for the working characteristics of the heat pipe under the motion condition as claimed in any one of claims 1 to 5, wherein: before the experiment begins, a motion condition control program is led into a control system of the mechanical arm device (1); controlling a rotating shaft at the tail end of the mechanical arm device (1) to move the heat pipe (3) to a reference position; starting a data acquisition card (5) and a power supply of an electric heating system (7), and increasing the voltage at a speed of 20-30V every 5 minutes to heat the heat pipe (3); monitoring the temperature change of the heat pipe (3) through a remote computer (6), stopping increasing the voltage when the temperature is stable and the maximum temperature difference of each measuring point of the thermocouple (4) is less than 50 ℃, and keeping the power of the electric heating system (7) constant; starting the mechanical arm device (1) to simulate the motion working condition required by the experiment to move, and recording data in real time; monitoring the temperature change of the heat pipe (3) through a remote computer (6), and controlling the experimental research device to return to the reference position after the change trend is stable; and (3) turning off the electric heating system (7) and cutting off the power supply.

Technical Field

The invention relates to the field of experimental study of heat transfer characteristics of heat pipes, in particular to a device and a method for experimental study of working characteristics of a heat pipe under a motion condition.

Background

The heat pipe is used as an efficient heat transfer element, realizes rapid heat transfer through phase change of internal working media, has great heat conduction capacity and good isothermal property, and is widely applied to various industrial fields such as military industry, aerospace and the like at present.

Currently, high-temperature heat pipe technology is widely used for equipment and systems under static conditions, such as heat exchangers, micro nuclear reactors and the like. Researchers in various countries around the world develop a great deal of theoretical and experimental research aiming at the working characteristics of the high-temperature heat pipe such as starting, heat transfer and the like under the static condition. However, when the high-temperature heat pipe is applied to an equipment system under a motion condition, the motion condition will have a strong influence on the operating characteristics of the high-temperature heat pipe, and needs to be studied through experimental means.

Disclosure of Invention

In order to solve the above-mentioned problems in the prior art, an object of the present invention is to provide a device and a method for experimental research on the operating characteristics of a heat pipe under motion conditions, so as to provide an effective means for the research on the heat transfer performance of a high-temperature heat pipe under motion conditions.

In order to achieve the purpose, the invention adopts the following technical scheme:

a heat pipe working characteristic experimental research device under motion conditions comprises a mechanical arm device 1, a clamping part 2, a heat pipe 3, a thermocouple 4, a data acquisition card 5, a remote computer 6 and an electric heating system 7; the mechanical arm device 1 comprises a plurality of groups of rotating shafts, and the periodic or aperiodic motion conditions of the inclination, the swing, the fluctuation and the vibration of the mechanical arm are realized by controlling the rotating shafts of the mechanical arm device 1 to rotate; the tail end of the mechanical arm device 1 is connected with a base 2-2 of the clamping part 2 through a flange; the heat pipe 3 is fixed in a central circular hole 2-1 of the clamping part 2, so that the heat pipe 3 and the clamping part 2 can synchronously move along with the mechanical arm device 1; the thermocouple 4 is fixed on the outer wall surface of the heat pipe 3 and is connected with the data acquisition card 5, so that the temperature of the wall surface of the heat pipe can be measured under the motion condition; the data acquisition card 5 transmits the data to the remote computer 6 for recording and storing; the electric heating system 7 consists of a voltage regulator 7-1 and a heating wire 7-2 connected with the voltage regulator 7-1, and the heating wire 7-2 is wound at one end of the heat pipe 3 to provide the heat power required by the operation of the heat pipe.

The mechanical arm device 1 is provided with six rotating shafts which are respectively driven by a motor, and translation and rotation along X, Y and Z coordinate axes are realized by controlling the rotating amplitude and speed of each rotating shaft, and the maximum radius of the movement range is 3 meters.

The clamping part 2 is made of stainless steel, the clamping part base 2-2 can be connected with a flange, and the heat pipe 3 can penetrate through the central circular hole 2-1 and is compressed by a bolt to play a fixing role.

The heat pipe 3 is a high-temperature heat pipe, the inside of the heat pipe is an alkali metal working medium, the diameter of the heat pipe is not more than 5 cm, and the length of the heat pipe is not more than 3 m.

The electric heating system 7 can realize power regulation required by experiments, and the experimental power does not exceed 15 kW.

The experimental research method for the working characteristics of the heat pipe under the motion condition comprises the following steps: before the experiment starts, a motion condition control program is introduced into a control system of the mechanical arm device 1; controlling a rotating shaft at the tail end of the mechanical arm device 1 to move the heat pipe 3 to a reference position; starting a power supply of the data acquisition card 5 and the electric heating system 7, and increasing the voltage at a speed of 20-30V every 5 minutes to heat the heat pipe 3; monitoring the temperature change of the heat pipe 3 through a remote computer 6, stopping increasing the voltage when the temperature is stable and the maximum temperature difference of each measuring point of the thermocouple 4 is less than 50 ℃, and keeping the power of the electric heating system 7 constant; starting the mechanical arm device 1 to simulate the motion working condition required by the experiment to move, and recording data in real time; monitoring the temperature change of the heat pipe 3 through a remote computer 6, and controlling the experimental research device to return to the reference position after the change trend is stable; the electric heating system 7 is turned off and the power supply is cut off.

The invention realizes the operation condition by utilizing the mechanical arm device to simulate, adopts the specially-made clamping part to fix the heat pipe, obtains the working characteristic of the high-temperature heat pipe under the motion condition by measuring the surface temperature distribution of the high-temperature heat pipe, and provides an experimental device and a method for the heat transfer performance research of the high-temperature heat pipe under the motion condition.

Drawings

FIG. 1 is a layout diagram of a heat pipe performance testing apparatus under motion conditions according to the present invention.

FIG. 2 is a cross-sectional view of a holding member in the experimental apparatus of the present invention

In the figure: 1-a robotic arm device; 2-clamping part, 2-1-central circular hole, 2-2-clamping part base; 3-a heat pipe; 4-a thermocouple; 5-a data acquisition card; 6-a remote computer; 7-an electric heating system, 7-1-a voltage regulator and 7-2-a heating wire.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings.

As shown in FIG. 1, the experimental research device for the working characteristics of the heat pipe under motion conditions comprises a mechanical arm device 1, a clamping part 2, a heat pipe 3, a thermocouple 4, a data acquisition card 5, a remote computer 6 and an electric heating system 7.

The mechanical arm device 1 comprises six groups of rotating shafts, the tail ends of the rotating shafts are connected with a base 2-2 of a clamping part 2 through flanges, a heat pipe 3 is fixed in a central circular hole 2-1 of the clamping part 2 and is compressed through a bolt to play a fixing role (as shown in figure 2), and a thermocouple 4 is fixed on the outer wall surface of the heat pipe 3 and is connected with a data acquisition card 5; the data acquisition card 5 transmits the data to the remote computer 6 for recording and storing; the electric heating system 7 consists of a voltage regulator 7-1 and a heating wire 7-2, and the heating wire 7-2 is wound at one end of the heat pipe 3.

The invention relates to a heat pipe working characteristic experimental research device under motion conditions, which comprises the following working procedures: and starting the electric heating system 7, adjusting proper heating power through the pressure regulator 7-1, and heating the heat pipe 3 through the heating wire 7-2 to ensure that the heat pipe 3 works normally and starts and transfers heat. Meanwhile, the mechanical arm device 1 is started, the rotation amplitude and the rotation speed of six rotating shafts of the mechanical arm device 1 are controlled by a program, and the heat pipe 3 and the clamping part 2 can synchronously move along with the mechanical arm device 1 as the clamping part 2 and the heat pipe 3 are fixed at the tail end of the mechanical arm device 1. The program can be used to control the arm device 1 to achieve the motion conditions required for experimental studies, including tilt, sway, heave, vibration, rotation, etc. Meanwhile, the distribution and change rule of the wall temperature of the heat pipe under the motion condition is measured by using the thermocouple 4 fixed on the outer wall surface of the heat pipe 3, and the measured data is transmitted to the remote computer 6 through the data acquisition card 5 to be recorded and stored, so that the working characteristic rule of the heat pipe under the motion condition is obtained. In conclusion, the invention provides an effective means for the research of the heat transfer performance of the high-temperature heat pipe under the motion condition.

The invention is not described in detail in the conventional technical content.