CN218465866U

CN218465866U - System for preventing converter vaporization cooling blowdown from burning futilely

Info

Publication number: CN218465866U
Application number: CN202221685633.7U
Authority: CN
Inventors: 李嘉麒; 代黎; 曹盛华
Original assignee: Wisdri Engineering and Research Incorporation Ltd
Current assignee: Wisdri Engineering and Research Incorporation Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-02-10
Anticipated expiration: 2032-07-01

Abstract

The utility model relates to the technical field of ferrous metallurgy, in particular to a system for preventing converter vaporization cooling pollution discharge dry burning; the system comprises a header, a conventional circulating system, an enhanced heat exchange circulating system and a drainage system, wherein the conventional circulating system and the enhanced heat exchange circulating system comprise a circulating pump, the water outlet end of the circulating pump is connected with the header to form the conventional circulating system, the enhanced heat exchange circulating system comprises a circulating valve and a first drainage pipe, the drainage system comprises a second drainage pipe, the second drainage pipe is communicated with the first drainage pipe, a drainage valve is arranged on the second drainage pipe, and a drainage hose is arranged between the first drainage pipe and the second drainage pipe. This system realizes strengthening the heat transfer circulation through being connected of circulating pump and first drain pipe, drainage hose, has strengthened the inside heat transfer condition of drain pipe, has guaranteed the stable state of drain pipe under the high temperature condition, has avoided its overheated condition because of inside water does not flow and causes, has promoted the security of each pipeline, has guaranteed entire system's working property.

Description

System for preventing converter vaporization cooling blowdown from burning futilely

Technical Field

The utility model relates to a ferrous metallurgy technical field especially relates to a system for prevent converter vaporization cooling blowdown dry combustion method.

Background

The energy consumption of steel enterprises in China is close to 10%, and at the same time, the steel enterprises at the present stage still have a gap between the utilization rate of waste heat and that of developed countries, so that the improvement of waste heat recovery and the improvement of energy utilization rate in the steel production process are one of important ways for realizing high efficiency and greening of steel production. At present, the cooling of the waste heat boiler mainly has two modes, namely open-circuit or direct cooling by circulating water and evaporative cooling, and compared with direct water cooling, the steam generated by an evaporative cooling system can be merged into a plant steam pipe network for power generation, power, heating and the like, so that the energy utilization rate is higher.

The waste heat boiler vaporization cooling system changes the traditional flue water cooling mode into the vaporization cooling mode, and different heat exchangers are arranged at different temperature sections of a flue, so that heat carried by flue gas can be efficiently recovered, and a good heat collecting effect is achieved for a large-scale converter and an electric furnace. The existing waste heat boiler vaporization cooling system finds that the water circulation process does not exist in the water drain valve at the lower part of the flue of the moving section of the existing waste heat boiler vaporization cooling system, so that the situation of water leakage caused by high temperature burning of the partial pipeline and valve easily occurs, and the use of the vaporization cooling pollution discharge process is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a system for preventing converter vaporization cooling blowdown dry combustion method, including header, conventional circulation system, reinforce heat transfer circulation system and drainage system, conventional circulation system with reinforce heat transfer circulation system and include the circulating pump, the end of intaking of circulating pump with the header is connected, the play water end of circulating pump with the header is connected and is formed conventional circulation system, reinforce heat transfer circulation system and include circulation valve, first drain pipe, the play water end of circulating pump connects gradually circulation valve, first drain pipe, header formation and reinforces heat transfer circulation system, drainage system includes the second drain pipe, the second drain pipe with first drain pipe intercommunication, be provided with drainage valve on the second drain pipe.

Further, the first drain pipe passes through the kennel lateral wall, first drain pipe with be connected with the drainage hose between the second drain pipe.

Further, one end, far away from the first drain pipe, of the drain hose is communicated with the circulating valve and the second drain pipe.

Further, the drainage hose is located the outside of kennel lateral wall, the drainage valve is located the outside of kennel lateral wall.

Furthermore, a protective layer is arranged at the joint of the first water drainage pipe and the side wall of the dog house.

Furthermore, the drainage system also comprises a sewage flash tank, and the sewage flash tank is connected with the output end of the second drainage pipe.

Furthermore, the water flow direction of the drainage system is sequentially a header, a first drainage pipe, a drainage hose, a second drainage pipe and a pollution discharge capacity expander.

Further, the header is connected with a heated tube.

Furthermore, temperature detectors are arranged on pipelines of the conventional circulating system, the enhanced heat exchange circulating system and the drainage system.

The utility model discloses owing to adopt above technical scheme, make it compare with prior art, have following beneficial effect:

1) The system for preventing converter vaporization cooling pollution discharge dry burning provided by the utility model realizes the heat exchange circulation strengthening by arranging the connection of the circulating pump, the first drainage pipe and the drainage hose, strengthens the internal heat exchange condition of the drainage pipe, ensures the stable state of the drainage pipe under the high temperature condition, avoids the overheating condition caused by the non-flowing of the internal water, promotes the safety of each pipeline, and ensures the working performance of the whole system;

2) The system for preventing the converter from vaporizing, cooling, discharging and dry burning reduces the failure of the water discharge valve due to high-temperature firing by changing the position of the water discharge valve, and improves the working stability of the system;

3) The utility model provides a prevent system that converter vaporization cooling blowdown from burning futilely sets up circulation valve and drain valve respectively in reinforceing heat transfer circulation system and drainage system, can carry out dynamic adjustment to the mobile condition in each pipeline in the drainage system, realizes flow control's effect, reduces the influence because of the high temperature causes the drain valve.

Drawings

Fig. 1 is a schematic structural diagram of the system for preventing dry combustion of converter by vaporization cooling and sewage discharge.

1-header; 2-a heated tube; 3-a circulating pump; 4-a recycle valve; 5-a first drain pipe; 6-conventional circulation pipeline; 7-a second drain pipe; 8-a drain valve; 9-doghouse sidewalls; 10-a drain hose; 11-a protective layer; 12-blowdown flash tank.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention. In the drawings, the size and relative sizes of certain features may be exaggerated for clarity.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may be directly connected or indirectly connected through an intermediate medium, and may be a connection between two elements or an interaction relationship between two elements, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.

In the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", and the like are used in the orientation or positional relationship shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention.

In addition, in the description of the present invention, the terms "first", "second", and "third" are used only for distinguishing between the descriptions.

As shown in the attached drawing 1 of the specification, the utility model provides a system for preventing converter vaporization cooling blowdown dry combustion, including header 1, conventional circulation system, intensive heat exchange circulation system and drainage system all are connected with header 1, header 1 still is connected with heated tube 2, conventional circulation system and intensive heat exchange circulation system include circulating pump 3, the water inlet end of circulating pump 3 with header 1 is connected, the water outlet end of circulating pump 3 through conventional circulating pipe 6 with header 1 is connected and is formed conventional circulation system, intensive heat exchange circulation system includes circulating valve 4, first drain pipe 5, the water outlet end of circulating pump 3 connects gradually circulating valve 4, first drain pipe 5, header 1 and forms intensive heat exchange circulation system, in this embodiment, conventional circulation system and intensive heat exchange circulation system share one circulating pump 3, the water inlet end of circulating pump 3 is connected with header 1, the water outlet end is connected with conventional circulating pipe 6 and circulating valve 4, realizes conventional circulation and intensive heat exchange circulation, can realize the multi-branch connection through three way connection; certainly, the conventional circulation system and the heat exchange enhancement circulation system can be two mutually independent circulation systems, namely, the two circulation systems respectively comprise a circulation pump 3, the two circulation pumps 3 can independently operate, and the conventional circulation system and the heat exchange enhancement circulation system can be independently regulated and controlled; the drainage system comprises a second drainage pipe 7, the second drainage pipe 7 is communicated with the first drainage pipe 5, and a drainage valve 8 is arranged on the second drainage pipe 7.

Optimize the embodiment, first drain pipe 5 passes kennel lateral wall 9, first drain pipe 5 with be connected with drainage hose 10 between the second drain pipe 7, kennel lateral wall 9 is provided with the through-hole that supplies first drain pipe 5 to pass, and first drain pipe 5 passes kennel lateral wall 9 back and connects drainage hose 10, drainage hose 10 keeps away from first drain pipe 5's one end with circulation valve 4 and second drain pipe 7 intercommunication, drainage hose 10 and drainage valve 8 are all in kennel lateral wall 9's the outside, the preferred metal collapsible tube of drainage hose 10, and in use can reserve the surplus that can extend, guarantees the mobility in the working process, first drain pipe 5 and kennel lateral wall 9 junction are provided with protective layer 11, and are specific first drain pipe 5 passes the inside and outside both sides of kennel lateral wall 9 all are provided with protective layer 11, can protect the stability of the wall of kennel lateral wall 9 opening part, also can play the protection to first drain pipe 5 simultaneously, avoid too big because of the dog inside and outside the difference in temperature, cause the influence to first drain pipe 5.

In an optimized implementation mode, the drainage system further comprises a drainage flash tank 12, the drainage flash tank 12 is connected with the output end of the second drainage pipe 7, the water flow direction of the drainage system sequentially comprises the header 1, the first drainage pipe 5, the drainage hose 10, the second drainage pipe 7 and the drainage flash tank 12, when the drainage needs to be maintained and repaired, the drainage valve 8 is opened, the circulating pump 3 is closed, and then the water in the header 1 sequentially flows through the first drainage pipe 5, the drainage hose 10 and the second drainage pipe 7 to the drainage flash tank 12 for treatment, and the sewage is discharged after reaching the standard; when the drainage operation is performed, the circulation valve 4 is opened, the water in the pipeline where the circulation valve 4 is located is discharged into the blowdown flash tank 12, and the water in the pipeline is completely discharged, of course, when the drainage operation is performed, the circulation valve 4 can be closed, and the water in the header 1 is discharged, further, in order to ensure that the water in the header 1 is completely discharged, the first drainage pipe 5 is connected with the bottom of the header 1, and the water in the header 1 is completely discharged as much as possible.

In the embodiment, in the normal working process, the circulation valve 4 is opened, the drain valve 8 is closed, and the normal working of the conventional circulation system and the enhanced heat exchange circulation system is ensured, wherein the conventional circulation process is that water in the header 1 passes through the circulation pump 3 and then is connected with the header 1 to form the conventional circulation process; the heat exchange enhancement circulation process is that after passing through the circulating pump 3, water in the header 1 sequentially passes through the circulating valve 4, the water discharge hose 10 and the first water discharge pipe 5 and then returns to the header 1 to form a heat exchange enhancement circulation system for enhancing the heat exchange of the first water discharge pipe 5; when the equipment needs to drain water during maintenance, the circulating pump 3 is closed, the circulating valve 4 is closed, the drainage valve 8 is opened, water in the heated pipe 2 and the header 1 finally enters the sewage flash tank 12 through the first drainage pipe 5, the drainage hose 10 and the second drainage pipe 7 under the self-gravity of the water, and the drainage process is completed.

The implementation mode is refined, in order to better regulate and control the conventional circulating system and the enhanced heat exchange circulating system, a flow metering valve can be arranged on a connecting pipeline of the circulating pump and the conventional circulating system as well as the enhanced heat exchange circulating system, and the water flow of the conventional circulating system and the enhanced heat exchange circulating system can be regulated and controlled to ensure the normal operation of the system; furthermore, temperature detectors are arranged on all pipelines of the conventional circulating system, the enhanced heat exchange circulating system and the drainage system, and flow measuring valves can be guided to adjust the flow of the conventional circulating system and the enhanced heat exchange circulating system through the temperature on all pipelines, so that the operating efficiency of the system is improved.

Based on the utility model discloses a prevent system's method of converter vaporization cooling blowdown dry combustion method specifically includes following step:

s1: water is conveyed to the header 1 by the circulation pump 3 through a conventional circulation pipe 6;

s2: opening a circulating valve 4, and enabling the circulating pump 3 to enable water to enter a header after passing through the circulating valve 4, a drainage hose 10 and a first drainage pipe 5;

s3: and (3) opening a drainage valve 8, and enabling water in the header 1 to enter a pollution discharge flash tank 12 after passing through a first drainage pipe 5, a drainage hose 10 and a second drainage pipe 7.

Further, the temperature in the header is 145-200 ℃, the operation of the heat exchange enhancement circulating system can enhance the heat exchange of the first drain pipe 5 and the drain hose 10, and the flow of the circulating pump 3 entering the conventional circulating system and the heat exchange enhancement system can be regulated and controlled, so that the normal operation of the whole system is ensured.

The detailed implementation mode can set temperature detectors on each pipeline to detect the temperature of each pipeline and valve, detect the operation condition of the system, and avoid the phenomenon that the local temperature is too high, which causes abnormal operation of the system, even damages to the pipeline and the valve.

And those not described in detail in this specification are well within the skill of those in the art.

To sum up, the utility model provides a system for preventing converter vaporization cooling blowdown dry combustion method, can reduce the drainage valve because the inefficacy condition that the high temperature firing produced, the stability of system work has been promoted, strengthen the inside heat transfer condition of drainage pipe, guarantee the steady state of first drainage pipe under high temperature, the security of each pipeline has been promoted, the whole working property has also been promoted simultaneously, regulation and control through circulation valve and drainage valve, can realize the dynamic regulation control of each pipeline flow condition of drainage system, guarantee under the condition that its original function does not lack, can realize flow control's effect, practical application to metallurgical industry has very positive meaning.

It will be appreciated by those skilled in the art that the invention can be embodied in many other specific forms without departing from the spirit or scope of the invention. While the embodiments of the present invention have been described, it is to be understood that the invention is not limited to such embodiments, and that changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a prevent system that converter vaporization cooling blowdown was burnt futilely, a serial communication port, including header, conventional circulation system, intensive heat transfer circulation system and drainage system, conventional circulation system with intensive heat transfer circulation system includes the circulating pump, the end of intaking of circulating pump with the header is connected, the play water end of circulating pump with the header is connected and is formed conventional circulation system, it includes circulating valve, first drain pipe to strengthen heat transfer circulation system, the play water end of circulating pump connects gradually circulating valve, first drain pipe, header formation and strengthens heat transfer circulation system, drainage system includes the second drain pipe, the second drain pipe with first drain pipe intercommunication, be provided with drain valve on the second drain pipe.

2. The system for preventing evaporative cooling blowdown dry combustion of a converter according to claim 1, wherein the first drain pipe passes through a doghouse side wall, and a drain hose is connected between the first drain pipe and the second drain pipe.

3. The system for preventing evaporative cooling blowdown dry combustion of a converter according to claim 2, wherein an end of the drain hose remote from the first drain pipe communicates with the circulation valve and a second drain pipe.

4. The system for preventing evaporative cooling blowdown dry burning of a converter as set forth in claim 2, wherein said drain hose is located outside said doghouse side wall, and said drain valve is located outside said doghouse side wall.

5. The system for preventing converter evaporative cooling blowdown dry combustion as set forth in claim 2, wherein a protective layer is provided at the junction of said first drain pipe and the doghouse side wall.

6. The system for preventing evaporative cooling blowdown dry combustion of a converter according to claim 2, wherein the blowdown system further comprises a blowdown flash tank connected to an output of the second blowdown pipe.

7. The system for preventing dry combustion of converter evaporative cooling blowdown according to claim 6, wherein the water flow direction of said water drainage system is header, first drain pipe, drain hose, second drain pipe, blowdown flash tank in sequence.

8. The system for preventing dry burning of converter by evaporative cooling blowdown according to claim 1, wherein said header tank is connected with a heated pipe.

9. The system for preventing converter evaporative cooling blowdown dry combustion as claimed in claim 1, wherein a temperature detector is arranged on each pipeline of the conventional circulating system, the enhanced heat exchange circulating system and the drainage system.