CN213794121U

CN213794121U - Jet temperature measuring device for continuous casting secondary cooling area

Info

Publication number: CN213794121U
Application number: CN202022740189.1U
Authority: CN
Inventors: 徐立君; 张鑫宇; 李嘉毅; 赵宸宸
Original assignee: Suzhou Honghao Photoelectric Technology Co ltd
Current assignee: Suzhou Honghao Photoelectric Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-27
Anticipated expiration: 2030-11-24

Abstract

The utility model relates to a jet-propelled temperature measuring device in two cold districts of continuous casting, include: the temperature measuring unit comprises a temperature measuring probe and a temperature measuring component, the temperature measuring probe is connected with the temperature measuring component through an optical fiber, the air injection unit comprises a plurality of nozzles, and the temperature measuring probe is arranged in an array formed by arranging a plurality of nozzles. The utility model provides an among the temperature measuring device, set up a plurality of nozzles around temperature probe, through nozzle spun high-pressure gas, form a dry gas passageway around temperature probe, and then remove the influence that vapor caused temperature measurement, form a stable temperature measurement environment for the temperature measurement result is more accurate.

Description

Jet temperature measuring device for continuous casting secondary cooling area

Technical Field

The utility model relates to a temperature measuring equipment field especially relates to the jet-propelled temperature measuring device in two cold districts of continuous casting.

Background

In the continuous casting process, the surface temperature of a casting blank is an important parameter for regulating the amount of cooling water, controlling the withdrawal speed and determining the liquid phase depth. In the secondary cooling area spray cavity, the surface temperature of the casting blank is accurately known, and the realization of continuous and online temperature measurement has important significance for determining the drawing speed, the continuous casting yield and the final metal performance of the casting blank. In addition, the secondary cooling area is in a high-temperature and humid environment, a water film and an iron scale formed by cooling water are arranged on the surface of a casting blank in the secondary cooling area, and mist steam formed after the cooling water is vaporized is arranged around the casting blank.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a when solving current two cold district casting blank temperature measurement to the interference thing that steam is given first place to can lead to the unsafe problem of measuring result, and the technical scheme who adopts is: a continuous casting secondary cooling area air injection temperature measuring device comprises: the temperature measuring unit comprises a temperature measuring probe and a temperature measuring component, the temperature measuring probe is connected with the temperature measuring component through an optical fiber, the air injection unit comprises a plurality of nozzles, and the temperature measuring probe is arranged in an array formed by arranging a plurality of nozzles.

In a further improvement, the temperature probe comprises: the temperature measuring device comprises a light pipe and optical coupling equipment, wherein one end of the light pipe is connected with the optical coupling equipment, and the optical coupling equipment is connected with the temperature measuring component through an optical fiber.

In a further improvement, the temperature measuring assembly comprises: the optical coupling device is connected with two single-mode optical fibers, and the two single-mode optical fibers are respectively connected with the photoelectric detectors.

In a further refinement, the optical coupling device comprises: the outer wall of bucket type, it has lens to inlay in the outer wall inner chamber, the outer wall is equipped with water cooling equipment outward.

The improved structure is characterized in that one end of the optical coupling device is in threaded connection with the inner wall of one end of the water cooling device, and the other end of the water cooling device is in threaded connection with the light guide pipe.

The water cooling device is characterized in that a water inlet of the water cooling device is connected with a water pump through a pipeline, and the water pump is connected with a control device.

The improved water cooling device is characterized in that a temperature sensor is arranged on the water cooling device and connected with the control device.

The improved structure is characterized in that the air injection unit comprises a plurality of nozzles, an air storage bin and a double-screw rod compressor, the double-screw rod compressor is communicated with the air storage bin, and the air storage bin is communicated with the plurality of nozzles.

In a further improvement, the gas channel in the nozzle is a Laval nozzle-shaped pipeline.

The utility model has the advantages that:

the utility model provides an among the temperature measuring device, set up a plurality of nozzles around temperature probe, through nozzle spun high-pressure gas, form a dry gas passageway around temperature probe, and then remove the influence that vapor caused temperature measurement, form a stable temperature measurement environment for the temperature measurement result is more accurate.

Drawings

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

FIG. 1 is a schematic structural view of the continuous casting secondary cooling area temperature measurement protection device of the present invention;

FIG. 2 is a schematic view of the temperature probe of the present invention;

fig. 3 is a schematic structural diagram of the optical coupling device of the present invention;

FIG. 4 is a schematic view of the water cooling structure of the present invention;

FIG. 5 is a schematic diagram of a water cooling cycle of the water cooling apparatus of the present invention;

fig. 6 is a schematic structural diagram of the air injection unit of the present invention;

fig. 7 is a schematic structural view of the heat-resistant housing of the present invention.

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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, the utility model provides a jet-propelled temperature measuring device in continuous casting secondary cooling district, include: the temperature measurement unit 100 comprises a temperature measurement probe 110 and a temperature measurement component 120, the temperature measurement probe 110 is connected with the temperature measurement component 120 through an optical fiber, the gas injection unit 200 comprises a plurality of nozzles 210, and the temperature measurement probe 110 is arranged in an array formed by arranging the plurality of nozzles 210.

As shown in fig. 2, in a further modification, the temperature measuring probe 110 includes: the temperature measuring device comprises a light pipe 111 and optical coupling equipment 112, wherein one end of the light pipe 111 is connected with the optical coupling equipment 112, and the optical coupling equipment 112 is connected with the temperature measuring component 120 through an optical fiber. The device replaces the traditional light splitting device through the optical coupling equipment, and has the advantages of simple structure, low cost and simple assembly.

The light pipe 111 is a metal pipe body, and black pigment is sprayed on the inner wall of the pipe body, so that light forms diffuse reflection when being conducted in the pipe body. Meanwhile, the light pipe is in threaded connection with the optical coupling equipment, and when the water cooling equipment is arranged outside the optical coupling equipment, the light pipe is connected with the water cooling equipment arranged outside the optical coupling equipment in a threaded connection mode.

As shown in fig. 2, in a further modification, the temperature measuring assembly 120 includes: the optical coupling device 112 is connected to two single-mode optical fibers 130, and the two single-mode optical fibers 130 are respectively connected to one of the two photodetectors 122. The luminous flux is coupled into two single-mode fibers and transmitted in the two single-mode fibers, the same germanium detector (photoelectric detector) is connected behind the single-mode fibers to receive the luminous flux transmitted by different single-mode fibers, the signal processing equipment converts and processes the optical signals, and then the temperature of the surface of the object to be measured is displayed through the display equipment 123 connected with the signal processing equipment. Specifically, single mode fibers of different wave bands are selected according to different temperature measurement ranges. Wherein, the signal processing equipment is a singlechip or a computer.

As shown in fig. 3, the optical coupling device 112 is further modified to include: the water cooling device comprises a barrel-shaped outer wall 1121, wherein two lenses 1123 are embedded in an inner cavity 1122 of the outer wall 1121, and a water cooling device 140 is arranged outside the outer wall 1121. The water cooling equipment continuously cools the optical coupling equipment through circulating water.

As shown in fig. 4, in a further modification, one end of the water cooling device 140 along the extending direction of the optical coupling device 112 is provided with a water inlet 141, and the other end is provided with a water outlet 142. The inlet 141 and the outlet 142 are connected to a reservoir or other container through pipes.

In a further improvement, one end of the optical coupling device 112 is connected to the inner wall of one end of the water cooling device 140 through a screw thread, and the other end of the water cooling device 140 is connected to the light pipe 111 through a screw thread. Specifically, as shown in the figure, the right inner wall of the water cooling device 140 has an internal thread 143, and the right outer wall of the optical coupling device 112 has an external thread 1124 matching the internal thread, and the two are connected by screw-fitting. Further, the left end of the water cooling device 140 has an external thread 144, and is connected to the light guide pipe 111 through the external thread 144.

As shown in fig. 5, the water inlet 141 is further modified by connecting a water pump 145 through a pipeline, and the water pump 145 is connected with a control device 147. In this embodiment, controlgear is the singlechip for the operating condition of control water pump makes the hydrologic cycle in the water cooling plant rapider through the water pump, improves cooling efficiency. The heat conducted from the surface of the steel billet through the light guide pipe is contacted with the front end of the water cooling equipment and is taken away through water cooling circulation. Therefore, the optical coupling equipment is effectively protected, and although the surface temperature of the steel billet reaches more than 1500 ℃, the optical coupling equipment can be effectively protected by water cooling equipment, and the radiation flux on the surface of the steel billet can be effectively transmitted.

The surface temperature of the steel billet changes along with the industrial process, and the internal temperature of the water cooling system is kept below 150 ℃ so as to ensure the normal work of the optical coupling equipment. When the temperature is low, the water circulation speed is lower, and when the surface temperature of the billet is high, the water circulation speed is higher. In order to control the speed of the water circulation, in this embodiment, a temperature sensor 146 is disposed on the water cooling device, and the temperature sensor 146 is connected to the control device 147. At least one temperature value is preset in the control equipment, and when the temperature measured by the temperature sensor is higher than the temperature value, the control equipment improves the working power of the water pump so as to improve the rotating speed of the water pump and accelerate the water circulation speed in the water cooling equipment. In another embodiment, a plurality of temperature values are preset in the control device, if the measured water temperature is lower than 100 ℃, the water pump can not work, the rotating speed of the water pump is gradually increased along with the increase of the measured temperature value, when the measured temperature exceeds 150 ℃, the control device can drive the alarm to give an alarm, and at the moment, the fan can be started, and air cooling is used for assisting in cooling. Specifically, when the temperature measured by the temperature sensor is less than 100 ℃, the rotating speed of the water pump is 0 (not working); when the temperature measured by the temperature sensor is less than 110 ℃, the rotating speed of the water pump is 1; the temperature measured by the temperature sensor at 110 ℃ is less than 120 ℃, and the rotating speed of the water pump is 2; the temperature measured by the temperature sensor at 120 ℃ is less than 130 ℃, and the rotating speed of the water pump is 3; the temperature measured by the temperature sensor at 130 ℃ is less than 140 ℃, and the rotating speed of the water pump is 4; the temperature measured by the temperature sensor at 140 ℃ is less than 150 ℃, and the rotating speed of the water pump is 5; when the temperature sensor measures the temperature at 150 ℃, the alarm gives an alarm.

As shown in fig. 6, in a further modification, the gas injection unit 200 includes a plurality of nozzles 210, a gas storage bin 220, and a double screw compressor 230, wherein the double screw compressor 230 is communicated with the gas storage bin 220, and the gas storage bin 220 is communicated with the plurality of nozzles 210. One or two double screw compressors 230 may be used, and when two double screw compressors 230 are used, the two double screw compressors 230 may be operated simultaneously or alternately.

The double screw compressor 230 has two valves, one is an air suction valve and the other is an exhaust stop valve, and the air suction valve is opened to suck external air into the compressor to start working and compress the air. When the pressure reaches a certain threshold value, the exhaust stop valve is opened to exhaust high-pressure gas. After the double-screw rod compressor controls the exhaust stop valve to exhaust, high-pressure gas is conveyed through the steel pipe and conveyed into the gas storage bin 220 to be stored, so that the quantity of the high-pressure gas is increased, the quantity of the gas generated in one working process of the double-screw rod compressor is not limited, and enough high-pressure gas can be used in the using process. The design of a gas storage bin adopts a cylindrical gas storage bin, two valves are combined, the valve at the upper end is used for exhausting high-pressure gas of a temperature measuring instrument, meanwhile, the valve can break down under the loss of the high-pressure gas, when the exhaust valve breaks down, the high-pressure gas in the gas storage bin can not be exhausted, and explosion is easy to occur, so an emergency valve is additionally designed at the lower end, a sensor is used for measuring the internal pressure in the gas storage bin, two threshold values are set for the valve, the valve at the upper end is a standard threshold value used for exhausting the high-pressure gas for a temperature measuring probe, the emergency exhaust valve is arranged at the lower end, and when the pressure in the bin reaches a dangerous threshold value, the valve is opened for emergency exhaust, so that accidents are avoided.

In a further improvement, the gas passage in the nozzle 210 is a laval nozzle-like pipe.

The front half of the nozzle is narrowed from large to small to middle to a narrow throat. The narrow throat is then dilated from small to large. The gas flows under high pressure into the front half of the nozzle, passes through the narrow throat and escapes from the rear half. The structure can change the speed of the airflow due to the change of the spray cross section area, so that the airflow is accelerated from subsonic speed to sonic speed to supersonic speed. The speed of the airflow is improved, so that the gas can blow away the water vapor dust more efficiently.

As shown in FIG. 7, the temperature measuring device is further modified in that the outer part of the temperature measuring device is also provided with a heat-resistant outer shell 300 made of heat-resistant materials, and the inner part of the outer shell is provided with heat-absorbing materials, so that the temperature in the outer shell is kept in a certain range, and the normal use of electric elements such as wires and the like is ensured.

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 jet-propelled temperature measuring device in two cold districts of continuous casting which characterized in that includes: the temperature measuring unit comprises a temperature measuring probe and a temperature measuring component, the temperature measuring probe is connected with the temperature measuring component through an optical fiber, the air injection unit comprises a plurality of nozzles, and the temperature measuring probe is arranged in an array formed by arranging a plurality of nozzles.

2. The continuous casting secondary cooling area air injection temperature measuring device as claimed in claim 1, wherein the temperature measuring probe comprises: the temperature measuring device comprises a light pipe and optical coupling equipment, wherein one end of the light pipe is connected with the optical coupling equipment, and the optical coupling equipment is connected with the temperature measuring component through an optical fiber.

3. The continuous casting secondary cooling area air injection temperature measuring device as claimed in claim 2, wherein the temperature measuring component comprises: the optical coupling device is connected with two single-mode optical fibers, and the two single-mode optical fibers are respectively connected with the photoelectric detectors.

4. The continuous casting secondary cooling zone air-jet temperature measuring device of claim 2, wherein the optical coupling device comprises: the outer wall of bucket type, it has lens to inlay in the outer wall inner chamber, the outer wall is equipped with water cooling equipment outward.

5. The continuous casting secondary cooling area air injection temperature measuring device as claimed in claim 4, wherein one end of the optical coupling equipment is in threaded connection with the inner wall of one end of the water cooling equipment, and the other end of the water cooling equipment is in threaded connection with the light guide pipe.

6. The continuous casting secondary cooling area air injection temperature measuring device as claimed in claim 5, wherein a water inlet of the water cooling equipment is connected with a water pump through a pipeline, and the water pump is connected with a control device.

7. The continuous casting secondary cooling area air injection temperature measuring device as claimed in claim 6, wherein a temperature sensor is arranged on the water cooling equipment, and the temperature sensor is connected with the control equipment.

8. The continuous casting secondary cooling area air injection temperature measuring device as claimed in claim 1, wherein the air injection unit comprises a plurality of nozzles, an air storage bin and a double-screw compressor, the double-screw compressor is communicated with the air storage bin, and the air storage bin is communicated with the plurality of nozzles.

9. The continuous casting secondary cooling area gas injection temperature measuring device of claim 8, wherein the gas channel in the nozzle is a laval nozzle-like pipe.