CN217922242U

CN217922242U - Laser detector in furnace

Info

Publication number: CN217922242U
Application number: CN202222392082.1U
Authority: CN
Inventors: 张丽华; 丁志华
Original assignee: Changzhou Airuiken Electromechanical Technology Development Co ltd
Current assignee: Changzhou Airuiken Electromechanical Technology Development Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-11-29
Anticipated expiration: 2032-09-08

Abstract

The utility model provides a laser detector in a furnace, which comprises a transmitter and a receiver which are arranged at two sides of a heating furnace, wherein the transmitter comprises a shell, and a first laser transmitter is arranged in the shell; the first laser emitter emits invisible infrared laser; the infrared laser has a wavelength of 905nm or less and a frequency of 1000Hz or more. The infrared laser that first laser emitter sent, the wavelength is shorter, and the frequency is higher, and consequently the penetrability is stronger, even touch flame, also difficult refraction or reflection take place to with the stable transmission of laser signal to the receiver on, ensure the utility model discloses normal use.

Description

Laser detector in furnace

Technical Field

The utility model relates to a metallurgical detection technology field specifically is a laser detector in stove.

Background

The laser detector in the furnace is mainly used in a heating furnace on a hot rolling production line in the metallurgical industry, and outputs a control signal through in-place detection of the working movement position in the heating furnace, thereby playing the role of automatic control.

The laser detector in the furnace generally adopts a correlation mode and comprises a semiconductor red laser tube for transmitting and a receiver for receiving a laser signal.

Chinese patent CN203382806U discloses a laser detector in furnace, which comprises an emitter and a receiver which are independent of each other, and are respectively disposed on two sides of a heating furnace, and a high-power semiconductor laser is used as a light source to emit a beam of quasi-parallel visible red laser, and after the red laser passes through the heating furnace, the red laser is amplified by a receiving circuit of a photoelectric tube in the receiver, and a control signal is output to complete the detection of the position and the number of the billet in the furnace.

Because the visible laser emitted by the laser has longer wavelength, lower frequency and weaker penetrating power, when the visible laser collides with flame in the heating furnace, the visible laser is easy to refract or reflect, so that the receiver cannot receive signals.

Therefore, how to overcome the above-mentioned drawbacks becomes a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem in the background art, the utility model discloses a laser detector in stove.

The utility model provides a laser detector in a furnace, which comprises a transmitter and a receiver which are arranged at two sides of a heating furnace, wherein the transmitter comprises a shell, and a first laser transmitter is arranged in the shell;

the first laser emitter emits invisible infrared laser;

the infrared laser has a wavelength of 905nm or less and a frequency of 1000Hz or more.

The infrared laser that first laser emitter sent, the wavelength is shorter, and the frequency is higher, and consequently the penetrability is stronger, even touch flame, also difficult refraction or reflection take place to with the stable transmission of laser signal to the receiver on, ensure the utility model discloses normal use.

The first laser emitter generally emits only one beam of light, and the intensity is still relatively low, so that the problem is further improved, and specifically, the first laser emitter emits a parallel beam of infrared laser light.

The specific structure of casing does: the casing is including connecting gradually:

a circuit unit for mounting a circuit board and a circuit;

the mounting plate is used for mounting the shell on the heating furnace;

and the emitting part is used for installing the first laser magic device.

The first laser emitter emits invisible laser, and the laser is difficult to control to align with the receiver during debugging, so that the problem is further improved and solved; the second laser emitter is detachably mounted at the end of the emitting part. When debugging, the second laser emitter is arranged on the emitting part, and visible light emitted by the second laser emitter is convenient to align to the receiver; and after debugging is finished, the second laser transmitter is taken down, and the laser emitted by the first laser transmitter can be automatically aligned with the receiver.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

in the figure: 1. a housing; 2. a first laser transmitter; 3. a second laser transmitter; 11. a circuit section; 12. mounting a plate; 13. and a transmitting section.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The first embodiment is as follows:

the utility model relates to a laser detector in a furnace, which comprises a transmitter and a receiver arranged at the two opposite sides of a heating furnace.

As shown in fig. 1, the transmitter includes a housing 1, and the housing 1 is composed of a circuit section 11, a mounting board 12, and a transmitting section 13 connected in this order. The circuit portion 11 has a rectangular parallelepiped shape, and a wiring board and a circuit are mounted therein. The mounting plate 12 is square and is used for mounting the emitter on the wall of the heating furnace and is locked and fixed by bolts. The emitting portion 13 is cylindrical and provided with axially arranged emitting holes. The first laser transmitter 2 is mounted in the transmitting part 13 with its transmitting point coinciding with the transmitting hole axis.

The first laser emitter 2 is a semiconductor infrared laser tube with laser peak power above 150W and emits invisible infrared laser. The infrared laser has a wavelength of 905nm or less and a frequency of 1000Hz or more.

The infrared laser that first laser emitter 2 sent, the wavelength is shorter, and the frequency is higher, and consequently the penetrability is stronger, even touch flame, also difficult refraction or reflection take place to with the stable transmission of laser signal to the receiver on, ensure the utility model discloses normal use.

Example two:

compared with the first embodiment, the differences are as follows: the first laser transmitter 1 emits a parallel beam of infrared laser light. Therefore, the intensity of the infrared laser emitted by the first laser emitter 1 is stronger, and the received signal of the receiver is more stable.

Example two:

compared with the first embodiment, the differences are as follows: because the first laser transmitter 2 emits invisible laser, it is difficult to control the laser to align with the receiver during debugging, and based on this, the present embodiment is designed as follows: the utility model discloses still include second laser emitter 3, second laser emitter 3 also is the infrared laser pipe of semiconductor, can emit visible infrared laser. The end of the emission hole is provided with an internal thread, and the second laser emitter 3 is mounted on the end of the emission part 13 in a threaded connection manner. During debugging, the second laser emitter 3 is arranged on the emitting part 13, and the visible light emitted by the second laser emitter 3 is convenient to align with a receiver; after debugging, the second laser emitter 3 is taken down, and the laser emitted by the first laser emitter 2 can be automatically aligned with the receiver.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a laser detector in stove, is including installing transmitter and the receiver in the heating furnace both sides which characterized in that: the emitter comprises a shell (1), and a first laser emitter (2) is installed in the shell (1);

the first laser emitter (2) emits invisible infrared laser light;

the wavelength of the infrared laser is below 905nm, and the frequency is above 1000 Hz.

2. The in-furnace laser detector of claim 1, wherein: the first laser transmitter (2) transmits a parallel infrared laser beam.

3. The in-furnace laser detector of claim 1, wherein: the shell (1) comprises the following components connected in sequence:

a circuit unit (11) for mounting a wiring board and a circuit;

the mounting plate (12) is used for mounting the shell (1) on a heating furnace;

an emitting part (13) for mounting the first laser generator (2).

4. The laser detector in a furnace of claim 3, wherein: the laser device also comprises a second laser emitter (3) which can emit visible infrared laser;

the second laser emitter (3) is detachably mounted at the end of the emitting part (13).