CN216585057U

CN216585057U - Steelmaking converter vaporization cooling flue water circulating system with fluidic device

Info

Publication number: CN216585057U
Application number: CN202122990995.9U
Authority: CN
Inventors: 黄桂清; 赵晶晶
Original assignee: Wuxi Xianglong Global Technology Co ltd
Current assignee: Wuxi Xianglong Global Technology Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-05-24
Anticipated expiration: 2031-12-01

Abstract

The utility model relates to a steelmaking converter evaporative cooling flue water circulation system with a jet device, which comprises an evaporative cooling flue and a steam pocket, wherein the liquid outlet of the steam pocket is communicated with a descending pipe, the descending pipe is provided with the jet device, the steam pocket feed water is pressurized by a feed pump and then is introduced into the center of the jet device through a jet guide pipe, and is sprayed out at a high speed through a stainless steel nozzle, so that the pressure is converted into kinetic energy, the outlet of the stainless steel nozzle forms vacuum, the water in the steam pocket is sucked, the two types of water in a jet mixing cylinder are mixed and exchanged, then the kinetic energy is reduced into pressure, and the pressure flows out through a lower contraction pipe, and thus the local circulating power in the cooling flue circulation system can be improved. The jet device has the advantages of simple structure, reliable work, no power consumption, no noise, no pollution and no maintenance, achieves the natural circulation function of the auxiliary evaporation cooling flue under the condition of not increasing equipment such as a forced circulation water pump, a control valve and the like, and prolongs the service life of the evaporation cooling flue.

Description

Steelmaking converter vaporization cooling flue water circulating system with fluidic device

Technical Field

The utility model relates to a steelmaking converter evaporative cooling flue water circulation system with a jet device.

Background

The vaporization cooling flue of the steelmaking converter not only can play a role in recovering high-temperature flue gas and cooling flue gas, but also can generate steam to recover a large amount of heat energy for production and living of factories, thereby reducing the steelmaking cost.

However, the vaporization cooling flue of the steel converter is influenced by the steel-making periodicity, high-temperature flue gas is not generated during the blowing stopping period of the oxygen lance, the water circulation in the heated pipe is basically stopped, a large amount of high-temperature flue gas is suddenly generated during oxygen blowing, the steam blockage phenomenon is easily generated in the heated pipe, and the water circulation stagnation on a local loop is caused by uneven water circulation resistance of each loop, so that transverse cracks are generated, even the pipe is exploded, and the service life of the flue is influenced.

In the beginning of the last 80 th century, in order to solve the problem of uneven and insufficient local circulating power in a converter vaporization cooling flue circulating system, a forced circulating water pump is generally arranged to increase the circulating power, but the equipment investment cost, the running power consumption and the overhaul and maintenance cost are increased.

Disclosure of Invention

The utility model aims to overcome the defects and provides a steelmaking converter evaporative cooling flue water circulation system with a jet device, which can realize the natural circulation function of an auxiliary evaporative cooling flue on the premise of not increasing a forced circulation water pump, a control valve and other equipment.

The purpose of the utility model is realized as follows:

a steelmaking converter evaporative cooling flue water circulation system with a jet device comprises an evaporative cooling flue and a steam pocket, wherein the top of the evaporative cooling flue is communicated with a liquid inlet of the steam pocket through an ascending pipe, a water supply pipe is connected to a water replenishing port of the steam pocket, a water supply pump is arranged on the water supply pipe, a liquid outlet of the steam pocket is communicated with a descending pipe, the other end of the descending pipe is connected to the bottom of the evaporative cooling flue, the descending pipe is provided with the jet device and comprises a jet mixing cylinder, an upper expanding pipe and a lower contracting pipe, the upper expanding pipe and the lower contracting pipe are respectively connected to the upper end and the lower end of the jet mixing cylinder, an opening is formed in the wall of the jet mixing cylinder, a jet pipe is inserted into the opening, the jet pipe is an L-shaped stainless steel pipe, the transverse section of the L-shaped jet pipe penetrates through the wall of the jet mixing cylinder, the vertical section of the jet pipe penetrates through a plurality of transverse positioning plates, and one end of each positioning plate is fixed on the inner wall of the jet mixing cylinder, the other end of the jet flow guide pipe is fixed with the outer wall of the jet flow guide pipe vertical section, the tail end of the jet flow guide pipe vertical section is a stainless steel nozzle, one end of the jet flow guide pipe transverse section is communicated with a water supply pipe through a pipeline, and the top of an upper expanding pipe and the bottom of a lower contracting pipe in the jet flow device are communicated with a pipeline of a descending pipe.

Preferably, the jet device is in a shape with a thick middle part and two thin ends.

Preferably, the jet mixing cylinder is a straight cylinder, and the upper expanding pipe and the lower contracting pipe are conical.

Preferably, a seal is provided between the jet conduit and the wall of the jet mixing barrel.

Preferably, the vertical section of the jet pipe extends vertically in the center of the jet mixing cylinder.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model arranges a jet device on the descending pipeline of the vaporization cooling flue, water in a steam pocket enters the jet device from the upper part of the descending pipe through an upper expanding pipe, water supplied by the steam pocket is pressurized by a water supply pump and then is led into the center of the jet device through a jet guide pipe, the water is sprayed out at high speed through a stainless steel nozzle, the pressure is converted into kinetic energy, vacuum is formed at the outlet of the stainless steel nozzle, thus the water in the steam pocket is sucked, the two kinds of water are mixed and exchanged in a jet mixing cylinder, then the kinetic energy is reduced into pressure, and the pressure flows out through a lower contracting pipe, thus the local circulating power in a cooling flue circulating system can be improved. The jet device has the advantages of simple structure, reliable work, no power consumption, no noise, no pollution and no maintenance, achieves the natural circulation function of the auxiliary evaporation cooling flue under the condition of not increasing equipment such as a forced circulation water pump, a control valve and the like, and prolongs the service life of the evaporation cooling flue.

Drawings

FIG. 1 is a schematic view of a water circulation system of a steelmaking converter evaporative cooling flue with a jet device according to the present invention.

FIG. 2 is a schematic diagram of the jet device in the water circulation system of the evaporative cooling flue of the steelmaking converter with the jet device.

Fig. 3 is a bottom view of the downcomer of fig. 1.

Wherein: the device comprises a vaporization cooling flue 1, a steam pocket 2, an ascending pipe 3, a water supply pipe 4, a water supply pump 5, a descending pipe 6, a jet device 7, a jet mixing cylinder 8, an upper expanding pipe 9, a lower contracting pipe 10, a jet guide pipe 11, a stainless steel nozzle 12 and a positioning plate 13.

Detailed Description

Referring to fig. 1 to 3, the utility model relates to a steelmaking converter evaporative cooling flue water circulation system with a jet device, which comprises an evaporative cooling flue 1 and a steam pocket 2, wherein the top of the evaporative cooling flue 1 is communicated with a liquid inlet of the steam pocket 2 through an ascending pipe 3, a water supplementing port of the steam pocket 2 is connected with a water supply pipe 4, the water supply pipe 4 is provided with a water supply pump 5, the liquid outlet of the steam pocket 3 is communicated with a descending pipe 6, and the other end of the descending pipe 6 is connected to the bottom of the evaporative cooling flue 1.

The down pipe 6 is provided with a fluidic device 7, as shown in fig. 2 and fig. 3, the fluidic device 7 is integrally thick in the middle and thin in two ends, and is composed of a fluidic mixing cylinder 8, an upper expanding pipe 9 and a lower contracting pipe 10, the fluidic mixing cylinder 8 is a thick straight cylinder, the upper expanding pipe 9 and the lower contracting pipe 10 are respectively connected to the upper end and the lower end of the fluidic mixing cylinder 8, the upper expanding pipe 9 and the lower contracting pipe 10 are both conical, the wall of the fluidic mixing cylinder 8 is provided with an opening, a fluidic conduit 11 is inserted in the opening, the fluidic conduit 11 is an L-shaped stainless steel pipe, the transverse section of the L-shaped fluidic conduit 11 passes through the wall of the fluidic mixing cylinder 8, the vertical section vertically extends at the center of the fluidic mixing cylinder 8, a sealing member is arranged between the fluidic conduit 11 and the wall of the fluidic mixing cylinder 8, the vertical section of the fluidic conduit 11 passes through a plurality of positioning plates 13 which are transversely arranged, one end of the positioning plates 13 is fixed on the inner wall of the fluidic mixing cylinder 8, the other end is fixed with the outer wall of the vertical section of the jet flow guide pipe 11, so as to fix the jet flow guide pipe 11, and the tail end of the vertical section of the jet flow guide pipe 11 is provided with a stainless steel nozzle 12 used for downwards spraying pressurized water at high speed.

One end of the transverse section of a jet flow guide pipe 11 in the jet flow device 7 is communicated with a water supply pipe 4 through a pipeline, pressurized water is fed into the jet flow guide pipe 11 through a water supply pump 5, and the top of an upper expanding pipe 9 and the bottom of a lower contracting pipe 10 in the jet flow device 7 are communicated with a pipeline of a descending pipe 6.

The working principle of the steelmaking converter evaporative cooling flue water circulation system with the jet device is as follows:

the water in the steam pocket enters the jet device from the upper part of the downcomer through the upper expanding pipe, the water fed by the steam pocket is pressurized by the water feeding pump and then is led into the center of the jet device through the jet guide pipe, the water is sprayed out at a high speed through the stainless steel nozzle, the pressure is converted into kinetic energy, vacuum is formed at the outlet of the stainless steel nozzle, so that the water in the steam pocket is sucked, the two kinds of water are mixed and subjected to energy exchange in the jet mixing cylinder, the kinetic energy is reduced into the pressure, and the pressure flows out through the lower contracting pipe, and therefore the local circulating power in the cooling flue circulating system can be improved.

The jet device has the advantages of simple structure, reliable operation, no power consumption, no noise, no pollution and no maintenance, achieves the natural circulation function of the auxiliary evaporation cooling flue under the condition of not increasing equipment such as a forced circulation water pump, a control valve and the like, and prolongs the service life of the evaporation cooling flue.

Claims

1. The utility model provides a steelmaking converter vaporization cooling flue water circulating system with fluidic device which characterized in that: the device comprises a vaporization cooling flue and a steam pocket, wherein the top of the vaporization cooling flue is communicated with a liquid inlet of the steam pocket through an ascending pipe, a water supply pipe is connected to a water supply port of the steam pocket, a water supply pump is arranged on the water supply pipe, a liquid outlet of the steam pocket is communicated with a descending pipe, the other end of the descending pipe is connected to the bottom of the vaporization cooling flue, a jet device is arranged on the descending pipe and comprises a jet mixing cylinder, an upper expanding pipe and a lower contracting pipe, the upper expanding pipe and the lower contracting pipe are respectively connected to the upper end and the lower end of the jet mixing cylinder, an opening is formed in the wall of the jet mixing cylinder, a jet guide pipe is inserted into the opening, the jet guide pipe is an L-shaped stainless steel pipe, the transverse section of the L-shaped jet guide pipe penetrates through the wall of the jet mixing cylinder, the vertical section of the jet guide pipe penetrates through a plurality of positioning plates which are transversely arranged, one end of each positioning plate is fixed on the inner wall of the jet mixing cylinder, and the other end of each positioning plate is fixed with the outer wall of the vertical section of the jet guide pipe, the tail end of the vertical section of the jet flow guide pipe is a stainless steel nozzle, one end of the transverse section of the jet flow guide pipe is communicated with the water supply pipe through a pipeline, and the top of the upper expanding pipe and the bottom of the lower contracting pipe in the jet flow device are communicated with the pipeline of the descending pipe.

2. The steelmaking converter evaporative cooling flue water circulation system with the jet device as claimed in claim 1, wherein: the jet device is in a shape with thick middle and thin two ends.

3. The steelmaking converter evaporative cooling flue water circulation system with the jet device as claimed in claim 1, wherein: the jet mixing cylinder is a straight cylinder, and the upper expanding pipe and the lower contracting pipe are conical.

4. The steelmaking converter evaporative cooling flue water circulation system with the jet device as claimed in claim 1, wherein: a seal is disposed between the jet conduit and the wall of the jet mixing barrel.

5. The steelmaking converter evaporative cooling flue water circulation system with the jet device as claimed in claim 1, wherein: the vertical section vertically extends to the center of the jet mixing cylinder.