阅读说明：本技术 一种用于器件老化测试用的独立加热温控装置 (Independent heating temperature control device for device aging test ) 是由 卓玲佳 于 2019-12-01 设计创作，主要内容包括：本发明涉及一种器件老化测试用的独立加热温控装置,由密封盒和密封盒内的独立加热系统组成。独立加热系统主要由隔热模块、发热单元、类瓷加热单元、散热器、PT100温度传感器、温控仪表PID等组成,隔热模块内有类瓷加热单元、发热单元、散热器,发热单元顶面上安装PT100温度传感器,PT100温度传感器与温控仪表PID连接；发热单元的顶面上,安装有器件匹配电路板；匹配电路板的外接连线通过盒式壳体左右两侧的SMA射频连接母座与螺纹式穿心电容。该加热温控装置可对单个器件进行独立老化测试,并具有体积小,效率高,功耗低、氮气能耗少等优点。(The invention relates to an independent heating temperature control device for a device aging test, which consists of a sealing box and an independent heating system in the sealing box. The independent heating system mainly comprises a heat insulation module, a heating unit, a porcelain-like heating unit, a radiator, a PT100 temperature sensor, a temperature control instrument PID and the like, wherein the porcelain-like heating unit, the heating unit and the radiator are arranged in the heat insulation module, the PT100 temperature sensor is arranged on the top surface of the heating unit, and the PT100 temperature sensor is connected with the temperature control instrument PID; a device matching circuit board is arranged on the top surface of the heating unit; the external connection line of the matching circuit board is connected with the female seat and the threaded feedthrough capacitor through SMA radio frequencies on the left side and the right side of the box-type shell. The heating temperature control device can be used for carrying out independent aging test on a single device and has the advantages of small volume, high efficiency, low power consumption, low nitrogen energy consumption and the like.)

1. An independent heating temperature control device for a device aging test is provided with a PT100 temperature sensor (18) and a PID temperature control instrument (22); the method is characterized in that: the device comprises a sealing box and an independent heating system in the sealing box;

the sealing box is composed of a box-type shell (2) with an opening at the upper part and a turnover cover (1) above the box-type shell, and the opening or closing of the turnover cover (1) realizes the opening and sealing of the sealing box;

the rear part of the box-type shell (2) is provided with a nitrogen interface (10) for filling nitrogen into the shell;

the left side and the right side in the box-type shell (2) are respectively provided with an SMA radio frequency connection female seat (8) and a threaded feedthrough capacitor (9) for connecting a lead inside the sealed shell (2) to the outside;

the independent heating system mainly comprises an insulating module (14), a heating unit (15), a porcelain-like heating unit (16), a radiator (17), a PT100 temperature sensor (18), a temperature control instrument PID (22), a matching circuit board (13), an SMA radio frequency connection female seat (8) and a threaded feedthrough capacitor (9);

the heat insulation module (14) is provided with a rectangular groove, and the center of the groove is provided with a rectangular hole; a heating unit (15) is arranged in the rectangular groove of the heat insulation module (14); the top of the heating unit (15) is a plane, and the bottom of the heating unit is provided with a rectangular groove; a porcelain-like heating unit (16) is arranged at a groove at the bottom of the heating unit (15); the top surface of the porcelain-like heating unit (16) is tightly attached to the bottom plane of the groove of the heating unit (15); a radiator (17) is arranged on the bottom surface of the porcelain-like heating unit (16); the radiator (17) is fixed on the bottom surface of the heating unit (15); the contact surfaces between the heating unit (15), the porcelain-like heating unit (16) and the radiator (17) are tightly attached;

a PT100 temperature sensor (18) is arranged on the top surface of the heating unit (15) and used for collecting the heating temperature of the heating unit (15); the PT100 temperature sensor (18) is connected with a temperature control instrument PID (22);

a device matching circuit board (13) is arranged on the top surface of the heating unit (15) in the sealing box; the external connection wire of the matching circuit board (13) is fixedly connected with the threaded feedthrough capacitor (9) through SMA radio frequency connection female seats (8) arranged on the left side and the right side of the box-type shell (2).

2. The independently heated temperature controlled device of claim 1, wherein: an inner groove is formed in the upper portion of the inner wall of the box type shell (2), and a sealing ring (20) is installed in the inner groove; the bottom surface of the flip cover 1 is provided with a flip cover boss corresponding to the sealing ring (20), and when the flip cover boss is attached to the sealing ring (20), the flip cover (1) and the box-type shell (2) are in a sealing state.

3. The independently-heated temperature-controlled apparatus of claim 2, wherein: after the flip boss is attached to the sealing ring, the flip (1) is pressed through the disk nuts (5) at the front and the rear, so that the sealing performance of the sealing box is ensured.

4. The independently heated temperature controlled device of claim 1, wherein: the heating unit (15) is made of copper.

5. The independently heated temperature controlled device of claim 1, wherein: the matching circuit board (13) is a high-temperature-resistant porcelain-like circuit board.

Technical Field

The invention relates to a device aging test technology, in particular to a temperature control device suitable for an aging test of a radio frequency device.

Background

The aging condition of the device is tested, and the aging test method is an important work for ensuring the safety and reliability of products and equipment. At present, the device for testing the aging condition of the device in China mostly adopts a temperature control high temperature box device to test: put into the temperature control high temperature box device with the device under test and test, this temperature control high temperature box device mainly has: the inner box (the material is 304 corrosion resistant plate bending shaping), the outer container (the material is the cold-rolled steel sheet bending shaping of spraying plastics), there is heat preservation material (superfine super glass heat preservation cotton) between inner box and the outer container, install the electric heater formula heater (embedded heating element) in stainless steel cavity intermediate layer, air supply circulation system (adopt special fan to make the interior air forced circulation of box), control system (accurate microcomputer PID controller, PT100 temperature measurement sensor), safety arrangement (independent overtemperature prote protection and circuit set up short-circuit protection). Firstly, because the temperature control high-temperature box device has complex structure and large volume, the heating electric energy needs AC220V or AC380V alternating current, and the energy consumption power is very large; considering that the aging test is time-consuming and energy-consuming, a plurality of devices are only required to be concentrated together for one-time test, and even if the aging test is urgently needed by a single device, the test is not always needed; on the other hand, because the volume space in the temperature control high-temperature box device is large and the sealing performance is poor, when a plurality of devices are subjected to aging test together, a large amount of nitrogen is required to be filled into the device through a pipeline; moreover, the test temperature of the temperature control high-temperature box device is required to meet the requirement that the temperature control precision reaches less than or equal to +/-1 ℃, so that the temperature can only be heated to below 300 ℃ for ensuring the temperature control precision, but the aging test environment temperature of some special devices is required to be 300 ℃ or even higher, and the test device has no capability for the temperature control precision.

Disclosure of Invention

In order to solve the defects of the existing device aging test device, the invention aims to: the temperature control device for the aging test of the device is small in size and suitable for the requirement of the aging test of a single device; the temperature environment of 300 ℃ or higher can be achieved under the condition that the temperature control precision is less than or equal to +/-1 ℃; nitrogen gas may be independently filled.

The technical scheme adopted by the invention is as follows:

the independent heating temperature control device for the device aging test consists of a sealing box and an independent heating system in the sealing box.

The sealing box is composed of a box type shell 2 with an opening at the upper part and a turnover cover 1 above the box type shell, and the opening or closing of the turnover cover controls the opening and the sealing of the sealing box. The top of the box-type shell 2 is provided with a groove, and a sealing ring 20 is arranged in the groove; the position of the flip cover 1 corresponding to the sealing ring 20 is provided with a boss, the flip cover boss is attached to the sealing ring, and the flip cover 1 is pressed by the disk nuts 5 in front and at the back, so that the sealing performance of the sealing box is ensured.

The rear part of the box-shaped shell 2 is provided with a nitrogen interface 10 for charging nitrogen into the device.

The left side and the right side in the box-type shell 2 are respectively provided with an SMA radio frequency connection female seat 8 and a threaded feedthrough capacitor 9 for connecting the lead inside the sealed shell 2 to the outside.

The independent heating system mainly comprises an insulating module 14, a heating unit 15, a porcelain-like heating unit 16, a radiator 17, a PT100 temperature sensor 18, a temperature control instrument PID22, a matching circuit board 13, an SMA radio frequency connection female seat 8 and a threaded feedthrough capacitor 9.

The heat insulating module 14 is a part with a certain thickness and a rectangular groove, and a rectangular hole is arranged in the middle of the part, and is positioned in the groove in the shell 2. A heating unit 15 is arranged in the heat insulation module 14; a porcelain-like heating unit 16 is arranged in the heating unit 15; the top surface of the porcelain-like heating unit 16 is tightly attached to the plane of the bottom of the heating unit 15, and a radiator 17 is arranged on the bottom surface of the porcelain-like heating unit 16; the radiator 17 is fixed on the bottom surface of the heating unit 15, and the porcelain-like heating unit 16 is tightly pressed to ensure the close fit of the contact surfaces among the heating unit 15, the porcelain-like heating unit 16 and the radiator 17;

the power supply is used for heating the porcelain-like heating unit 16; the heat of the porcelain-like heating unit 16 is conducted to the heat generating unit 15, thereby raising the internal temperature of the cassette housing 2. A PT100 temperature sensor 18 is arranged on the top surface of the heating unit 15 and used for collecting the heating temperature of the heating unit 15; PT100 temperature sensor 18 is connected with temperature control instrument PID22, and the temperature that PT100 temperature sensor 18 was gathered in real time is through temperature control instrument PID22 intelligence control by temperature control instrument, guarantees the inside heating temperature of seal box and control by temperature change precision. A device matching circuit board 13 is mounted on the top surface of the heating unit 15 inside the sealed box; the external connection line of the matching circuit board 13 is fixedly connected with the threaded feedthrough capacitor 9 through SMA radio frequency connection female seats 8 arranged on the left side and the right side of the box-type shell 2.

When the heating temperature control device for the device aging test is used, a device to be tested is placed in a rectangular hole in the middle of a matching circuit 13 in a shell 2, and the rectangular hole is a device limiting placing hole designed according to the appearance of the device; after the device is placed, the flip cover 1 is closed and combined with the box-type shell 2, then the butterfly screw rod 4 is clamped into the notch of the flip cover 1, and the flip cover 1 is pressed tightly through the butterfly nut 5 on the butterfly screw rod 4. Then, the test heating temperature of the PID temperature control instrument 22 is set, and the inside of the cassette case 2 is heated by energization; when the interior of the box-type shell 2 is heated to a preset temperature, the PID temperature control instrument 22 automatically keeps the temperature at the preset temperature through the temperature value fed back by the PT100 temperature sensor 18, the temperature in the shell 2 is ensured to be kept at the preset temperature, the vertical deviation of the temperature is controlled to be plus or minus 1 ℃, and the temperature in the box-type shell 2 is kept within the preset temperature for a long time according to the aging time requirement of a tested device until the test is finished.

The invention has the beneficial effects that:

the heating temperature control device has small volume, namely the volume is one tenth of that of the traditional temperature control high-temperature box device; on the premise of ensuring that the temperature control precision is less than or equal to +/-1 ℃, the heating environment temperature can reach 300 ℃ or higher, the temperature can be controlled independently, nitrogen is filled independently, the power consumption is low, and the nitrogen energy consumption is low; the power supply is DC power DC 48V. The device can carry out independent aging test on a single device, and can also realize independent temperature control on a plurality of devices by one PID temperature control meter. This independent heating temperature control device, simple structure, control is accurate, only needs to set for after preheating the temperature value, all the other PID temperature control algorithm, the automatic control temperature of taking certainly by temperature control instrument 22.

The invention is further described with reference to the following drawings and detailed description.

Drawings

FIG. 1 is a schematic perspective view (top and left front) of a temperature control device according to an embodiment of the present invention

FIG. 2 is a schematic perspective view of the temperature control device of the present embodiment

FIG. 3 is a schematic diagram of a three-dimensional structure of the temperature control device after the cover is opened

FIG. 4 is a schematic diagram of an independent heating system of the temperature control device of this embodiment

FIG. 5 is a schematic diagram of a circuit temperature control system of the temperature control device of the present embodiment

In the figure: 1. a cover is turned; 2. a cassette case; 3. a flip pin shaft; 4. a dished screw; 5. a disc nut; 6. a dished screw pin; 7. a thermally insulating floor; 8, SMA radio frequency connection female seat; 9. a threaded feedthrough capacitor; 10. a nitrogen interface; 11. a flip-open handle; 12, a silica gel sealing ring; 13. a matching circuit board; 14. a heat insulation module; 15. a heat generating unit; 16. a porcelain-like heating unit; 17. a heat sink; a PT100 temperature sensor; 19. a heat sink sealing gasket; 20. a heat insulating base plate sealing gasket; 21. a heating power supply; a PID temperature control instrument; 23. solid state relay.

Detailed Description