Hot wire temperature detection device

Abstract

The utility model discloses a hot wire temperature detecting device, which comprises a fixed frame fixed on the wall of a cavity and a temperature measuring probe assembly arranged on the wall of the cavity in a penetrating manner, a driving mechanism is fixed at the tail end of the fixing frame, and the position of the driving mechanism on the fixing frame is adjustable; the driving mechanism is used for driving the temperature measuring probe assembly to be close to or away from the hot wire in the cavity. The temperature measuring probe assembly is arranged on the cavity wall, the driving mechanism is arranged on the fixing frame, the driving mechanism drives the temperature measuring probe assembly to be close to or away from the hot wire for temperature measurement, manual participation is not needed in the process, the temperature measuring efficiency is improved, and potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cells, in particular to a hot wire temperature detection device. Background Art

[0002] Currently, photovoltaic HJT process technology is developing rapidly. In this technology route, the equipment for intrinsic silicon passivation and heterojunction formation is mainly based on plasma-enhanced chemical vapor deposition (PECVD). With the development of technology, researchers have discovered that hot-wire high-temperature pyrolysis chemical vapor deposition (HWCVD) technology is less complex in structure, deposits faster and more efficiently, and does not damage the deposited layer, thereby preventing the loss of cell structure and performance.

[0003] However, in actual HWCVD applications, the hot filament operates at temperatures around 2000°C, and its temperature stability directly impacts chemical reactions and film deposition. Currently, this process requires manual temperature measurement to ensure stability. This increases worker workload, reduces temperature measurement efficiency, and poses safety risks.

[0004] Therefore, it is necessary to design a hot wire temperature detection device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the temperature measurement of the hot wire in the prior art needs to be performed manually, and to provide a wire temperature detection device.

[0006] The technical solution of the utility model is: a hot wire temperature detection device, comprising a fixing frame fixed on the cavity wall and a temperature measuring probe assembly penetrating the cavity wall; a driving mechanism is fixed to the tail end of the fixing frame, and the position of the driving mechanism on the fixing frame is adjustable; the driving mechanism is used to drive the temperature measuring probe assembly close to or away from the hot wire in the cavity.

[0007] The fixing frame is composed of four screw rods distributed in a rectangular shape; a fixing plate is provided on the driving mechanism; mounting holes corresponding to the four screw rods are provided on the fixing plate; and locking nuts are provided on both sides of the fixing plate on each screw rod.

[0008] The temperature measuring probe assembly includes a thermocouple probe and a thermocouple plug; one end of the thermocouple plug is connected to the thermocouple probe, and the other end is provided with a connecting sleeve; the driving mechanism is used to drive the connecting sleeve to move.

[0009] The driving mechanism includes a driving motor; a screw rod is fixed on the output shaft of the driving motor; and the other end of the screw rod is threadedly connected to the connecting sleeve.

[0010] The thermocouple probe and the cavity wall are sealed by magnetic fluid.

[0011] The minimum distance between the temperature measuring probe assembly and the heating wire in the cavity is 30 mm.

[0012] By adopting the above technical solution, the utility model has the following beneficial effects: the utility model arranges a temperature measuring probe assembly on the cavity wall, and arranges a driving mechanism on the fixed frame, and drives the temperature measuring probe assembly close to or away from the hot wire for temperature measurement through the driving mechanism. Not only does the process require no human participation, but it also improves the temperature measurement efficiency and avoids safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] The reference numerals in the accompanying drawings are:

[0016] Fixed frame 1, temperature probe assembly 2, thermocouple probe 2-1, thermocouple plug 2-2, connecting sleeve 2-3, magnetic fluid 2-5, driving mechanism 3, fixed plate 3-1, screw rod 3-2. DETAILED DESCRIPTION

[0017] (Example 1)

[0018] See Figure 1 A hot wire temperature detection device of this embodiment includes a fixing frame 1 fixed on the cavity wall and a temperature measuring probe assembly 2 penetrating the cavity wall; a driving mechanism 3 is fixed to the tail end of the fixing frame 1, and the position of the driving mechanism 3 on the fixing frame 1 is adjustable; the driving mechanism 3 is used to drive the temperature measuring probe assembly 2 close to or away from the hot wire in the cavity.

[0019] Furthermore, in order to facilitate the adjustment of the position of the driving mechanism 3 on the fixed bracket to ensure a relative safe distance between the temperature probe assembly 2 and the hot wire; the fixed bracket 1 is composed of four screws distributed in a rectangular shape; the driving mechanism 3 is provided with a fixed plate 3-1; the fixed plate 3-1 is provided with mounting holes corresponding to the four screws; each screw is provided with a locking nut on both sides of the fixed plate 3-1.

[0020] Furthermore, in order to ensure the accuracy of temperature measurement and facilitate installation, the temperature measuring probe assembly 2 includes a thermocouple probe 2-1 and a thermocouple plug 2-2; one end of the thermocouple plug 2-2 is connected to the thermocouple probe 2-1, and the other end is provided with a connecting sleeve 2-3; the driving mechanism 3 is used to drive the connecting sleeve 2-3 to move.

[0021] Furthermore, in order to reduce the space occupied by the driving mechanism, the driving mechanism includes a driving motor; a screw rod 3-2 is fixed on the output shaft of the driving motor; and the other end of the screw rod 3-2 is threadedly connected to the connecting sleeve 2-3.

[0022] Furthermore, in order to ensure the airtightness between the thermocouple probe 2 - 1 and the cavity wall, the thermocouple probe 2 - 1 and the cavity wall are sealed by a magnetic fluid 2 - 5 .

[0023] Furthermore, in order to ensure a safe temperature measurement distance between the temperature measuring probe assembly 2 and the hot wire, the minimum distance between the temperature measuring probe assembly 2 and the hot wire in the cavity is 30 mm, which is achieved by adjusting the position of the driving mechanism 3 on the fixing frame 1.

[0024] The hot wire temperature detection device of this embodiment is provided with a temperature measuring probe assembly 2 on the cavity wall, and a driving mechanism 3 is provided on the fixing frame 1. The driving mechanism 3 drives the temperature measuring probe assembly 2 to approach or move away from the hot wire for temperature measurement. The process not only does not require manual participation, but also improves the temperature measurement efficiency and avoids safety hazards.

[0025] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hot wire temperature detection device, characterized in that: The invention comprises a fixing frame (1) fixed on the cavity wall and a temperature measuring probe assembly (2) penetrating the cavity wall; a driving mechanism (3) is fixed to the tail end of the fixing frame (1), and the position of the driving mechanism (3) on the fixing frame (1) is adjustable; the driving mechanism (3) is used to drive the temperature measuring probe assembly (2) to approach or move away from the hot wire in the cavity.

2. A hot wire temperature detection device according to claim 1, characterized in that: The fixing frame (1) is composed of four screw rods distributed in a rectangular shape; a fixing plate (3-1) is provided on the driving mechanism (3); mounting holes corresponding to the four screw rods are provided on the fixing plate (3-1); and locking nuts are provided on both sides of each screw rod on the fixing plate (3-1).

3. The hot wire temperature detection device according to claim 1, characterized in that: The temperature measuring probe assembly (2) comprises a thermocouple probe (2-1) and a thermocouple plug (2-2); one end of the thermocouple plug (2-2) is connected to the thermocouple probe (2-1), and the other end is provided with a connecting sleeve (2-3); the driving mechanism (3) is used to drive the connecting sleeve (2-3) to move.

4. A hot wire temperature detection device according to claim 3, characterized in that: The driving mechanism comprises a driving motor; a screw rod (3-2) is fixed on the output shaft of the driving motor; and the other end of the screw rod (3-2) is threadedly connected to a connecting sleeve (2-3).

5. The hot wire temperature detection device according to claim 3, characterized in that: The thermocouple probe (2-1) and the cavity wall are sealed by magnetic fluid (2-5).

6. The hot wire temperature detection device according to claim 1, characterized in that: The minimum distance between the temperature measuring probe assembly (2) and the heating wire in the cavity is 30 mm.

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