CN219526686U

CN219526686U - Blast furnace pressure regulating valve group alarm system

Info

Publication number: CN219526686U
Application number: CN202320241181.1U
Authority: CN
Inventors: 项卫兵; 李彬; 陈波; 陈敏超; 何炯; 李阳
Original assignee: Lianfeng Steel Zhangjiagang Co Ltd
Current assignee: Lianfeng Steel Zhangjiagang Co Ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-08-15
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses an alarm system of a blast furnace pressure regulating valve group, belonging to the technical field of blast furnace pressure regulating valve groups, and aiming at solving the problem of internal leakage of the blast furnace pressure regulating valve group in the prior art. The system comprises a total regulating valve group, a first/second/third platinum thermal resistor, a CPU control station, an upper computer and an alarm sound, wherein the total regulating valve group is connected with the TRT turbine unit in parallel; the total regulating valve group comprises three regulating valves A, B and C which are connected in parallel; the first platinum thermal resistor is connected with the regulating valve A; the second platinum thermal resistor is connected with the regulating valve B; the third platinum thermal resistor is connected with the regulating valve C; the CPU control station is electrically connected with the first/second/third platinum thermal resistor and is used for receiving a temperature signal of the detection temperature of the first/second/third platinum thermal resistor; the CPU control station is connected with the alarm sound through the upper computer position and controls the alarm sound to give an alarm; the utility model is suitable for safety monitoring of the blast furnace pressure regulating valve group, and can improve the generated energy of the TRT turbine group and the operation stability of blast furnace top equipment.

Description

Blast furnace pressure regulating valve group alarm system

Technical Field

The utility model relates to an alarm system of a blast furnace pressure regulating valve group, and belongs to the technical field of blast furnace pressure regulating valve groups.

Background

In the iron-making process, the blast furnace gas is subjected to gravity dust removal, and after dry bag dust removal, the pressure of the gas is about 150kPa, and the temperature is about 150 ℃. The pressure regulating valve group of the blast furnace is an important device for ensuring the stability of the pressure at the top of the blast furnace, is a valve group for controlling the balance of the pressure at the top of the blast furnace, and when the TRT is not started to operate, the height adjustment of the pressure at the top of the blast furnace can be determined by the opening and closing degree of the valve of the total pressure regulating valve group. The TRT is started after a certain throughput of the blast furnace. At the moment, the valve of the total regulating valve group is in a fully closed state, the static blade of the TRT replaces the pressure regulating valve group to regulate the pressure of the top of the blast furnace, and meanwhile, blast furnace gas with high pressure and high temperature acts on the turbine group and then mechanical energy is converted into electric energy; in the process, the valve of the total regulating valve group is required to be subjected to internal leakage detection, so that the power generation capacity of the TRT is improved, and stable and safe operation of blast furnace top equipment is ensured.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides a blast furnace pressure regulating valve group alarm system, which can detect whether the total regulating valve group has an internal leakage problem in real time through temperature change in the process of generating power by a TRT turbine group, so that stable and safe operation of blast furnace top equipment is ensured.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a blast furnace pressure regulating valve group alarm system, which comprises a total regulating valve group, a first platinum thermal resistor, a second platinum thermal resistor, a third platinum thermal resistor, a CPU control station, an upper computer and alarm sounds, wherein the total regulating valve group, the first platinum thermal resistor, the second platinum thermal resistor, the third platinum thermal resistor, the CPU control station, the upper computer and the alarm sounds are connected in parallel with a TRT turbine group; the total regulating valve group consists of three regulating valves A, B and C which are connected in parallel;

the first platinum thermal resistor is arranged in the pipeline of the regulating valve A, and detects the temperature in the pipeline of the outlet of the regulating valve A; the second platinum thermal resistor is arranged in the pipeline of the regulating valve B, and detects the temperature in the outlet pipeline of the regulating valve B; the third platinum thermal resistor is arranged in the pipeline of the regulating valve C and used for detecting the temperature in the outlet pipeline of the regulating valve C; the CPU control station is electrically connected with the first platinum thermal resistor, the second platinum thermal resistor and the third platinum thermal resistor and is used for receiving temperature signals of detection temperatures of the first platinum thermal resistor, the second platinum thermal resistor and the third platinum thermal resistor; the CPU control station is connected with the alarm sound through the upper computer position and controls the alarm sound to give an alarm.

Furthermore, the communication port of the CPU control station is connected with the upper computer through the Ethernet.

Further, the audio interface of the upper computer is connected with the alarm sound.

Further, a display screen is arranged on the upper machine position.

Furthermore, the inlet end of the total regulating valve group is provided with a quick-opening valve for entering blast furnace gas, and the outlet end is sequentially provided with a first outlet blind plate valve and a first outlet butterfly valve for discharging blast furnace gas.

Further, an inlet blind plate valve and an inlet butterfly valve are sequentially connected to the inlet end of the TRT turbine unit, and a second outlet blind plate valve and a second outlet butterfly valve are sequentially connected to the outlet end of the TRT turbine unit.

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

the utility model provides an alarm system for a blast furnace pressure regulating valve group, which uses a first platinum thermal resistor, a second platinum thermal resistor and a third platinum thermal resistor to detect the internal temperature of outlet pipelines of a regulating valve A, a regulating valve B and a regulating valve C, transmits temperature signals to a CPU control station to process to obtain a temperature detection result, compares the temperature detection result with an alarm value set in an upper computer, and gives an alarm by an alarm sound after the temperature is higher than a set threshold value, so that maintenance personnel can check the processing in time.

Drawings

FIG. 1 is a schematic diagram of a blast furnace pressure regulating valve set alarm system;

FIG. 2 is a control diagram of FIG. 1;

in the figure: 1. a TRT turbine unit; 2. a regulating valve A; 3. a regulating valve B; 4. a regulating valve C; 5. a first platinum thermal resistor; 6. a second platinum thermal resistor; 7. a third platinum thermal resistor; 8. a CPU control station; 9. loading the machine; 10. alarm sound; 11. a quick-opening valve; 12. a first outlet blind plate valve; 13. a first outlet butterfly valve; 14. an inlet blind plate valve; 15. an inlet butterfly valve; 16. a second outlet blind plate valve; 17. and a second outlet butterfly valve.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Referring to fig. 1 and 2, the present embodiment provides an alarm system for a blast furnace pressure regulating valve set, which includes a first platinum thermal resistor 5, a second platinum thermal resistor 6, a third platinum thermal resistor 7, a CPU control station 8, an upper computer 9, an alarm sound 10, and a total regulating valve set connected in parallel with a TRT turbine unit 1. The total regulating valve group comprises a regulating valve A2, a regulating valve B3 and a regulating valve C4; the function of the control valve is to control the pressure of the furnace top after the TRT turbine unit 1 is stopped, and the pipe diameters of the regulating valve A2 and the regulating valve B3 are generally consistent and larger than the pipe diameter of the regulating valve C4. The three valves of the total pressure regulating valve set are all in a closed state when the TRT turbine set 1 works, and the top pressure of the TRT turbine set 1 is regulated.

And a first platinum thermal resistor 5 is arranged on the outlet pipeline of the regulating valve A2 and is used for detecting the temperature in the outlet pipeline of the regulating valve A. When the temperature in the outlet pipeline of the regulating valve A2 is increased, the blast furnace gas passes through the regulating valve A2, namely the regulating valve A has gas internal leakage, and abnormal conditions that the valve core is worn or the valve is not closed in place exist; and a second platinum thermal resistor 6 is arranged on the outlet pipeline of the regulating valve B3 and is used for detecting the temperature in the outlet pipeline of the regulating valve B3. When the temperature in the outlet pipeline of the regulating valve B3 is increased, the blast furnace gas passes through the regulating valve B3, namely the regulating valve B3 has gas internal leakage, and the abnormal condition that the valve core is worn or the valve is not closed in place exists; a third platinum thermal resistor 7 is arranged in the outlet pipeline of the regulating valve C4 and is used for detecting the temperature in the outlet pipeline of the regulating valve C4, when the temperature in the outlet pipeline of the regulating valve C4 rises, the blast furnace gas passes through the regulating valve C4, namely the regulating valve C has gas internal leakage, and abnormal conditions that the valve core is worn or the valve is not closed in place exist.

The CPU control station 8 is respectively connected with the first platinum thermal resistor 5, the second platinum thermal resistor 6 and the third platinum thermal resistor 7 and is used for receiving temperature signals detected by the first platinum thermal resistor 5, the second platinum thermal resistor 6 and the third platinum thermal resistor 7. The CPU control station 8 includes a CPU module, a communication module, and an analog input module. The first platinum thermal resistor 5, the second platinum thermal resistor 6 and the third platinum thermal resistor 7 convert detected physical heat in the pipeline into resistance signals, the resistance signals are connected to an analog module through cables, the resistance signals are converted into photoelectric signals which can be read by a CPU through the analog module, and the photoelectric signals are connected with an upper computer through an Ethernet by a communication port of the communication module after being processed by the CPU module. And an analog quantity input module in the CPU control station 8 receives the temperature detection signal and finally transmits the temperature detection signal to an alarm value set in the upper computer 9 for comparison. When the temperature is higher than the set threshold value, the CPU control station 8 sends out a text prompt alarm regulating valve A, a regulating valve B and an outlet pipeline of a regulating valve C through the upper computer 9, the alarm sound 10 is connected with the upper computer 9, and when the upper computer 9 sends out the text prompt alarm, the alarm sound 10 is controlled to send out an alarm sound prompt, so that maintenance personnel can check the abnormal condition in time and repair the abnormal condition. The internal leakage conditions of the regulating valve A, the regulating valve B and the regulating valve C are effectively monitored and warned, the processing time of abnormal furnace top pressure is reduced, the stability and reliability of the furnace top pressure of the blast furnace are ensured, and the generated energy of the TRT turbine unit 1 is further improved.

Specifically, the alarm sound 10 is connected into the audio interface of the upper computer 9. The upper computer 9 is provided with a display screen, so that personnel can observe and display reminding conditions conveniently. The inlet end of the main regulating valve group is provided with a quick-opening valve 11, blast furnace gas enters the main regulating valve group from the quick-opening valve 11, and the outlet end is sequentially provided with a first outlet blind plate valve 12 and a first outlet butterfly valve 13, so that the blast furnace gas is conveniently discharged. When the TRT turbine unit 1 is normally used, the quick-opening valve 11 and the total regulating valve are in a fully closed state, so that the blast furnace gas is completely fed into the TRT turbine unit 1. The inlet end of the TRT turbine unit 1 is sequentially provided with an inlet blind plate valve 14 and an inlet butterfly valve 15, and the inlet blind plate valve 14 and the inlet butterfly valve 15 are matched for cutting off a gas pipeline, so that the cutting off of the gas pipeline and the gas isolation are realized. The maintenance pipeline of the TRT turbine unit 1 is convenient to maintain without gas, and maintenance safety is ensured. The outlet end is provided with a second outlet blind plate valve 16 and a second outlet butterfly valve 17 in sequence, so that the gas isolation with a gas pipe network is cut off when the TRT turbine unit 1 is stopped or overhauled, the gas of the pipe network is prevented from flowing backwards into the TRT turbine unit 1, and the equipment and personal safety are ensured.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. The blast furnace pressure regulating valve group alarm system is characterized by comprising a total regulating valve group, a first platinum thermal resistor, a second platinum thermal resistor, a third platinum thermal resistor, a CPU control station, an upper computer and alarm sounds which are connected in parallel with a TRT turbine group; the total regulating valve group consists of three regulating valves A, B and C which are connected in parallel;

2. The warning system of a blast furnace pressure regulating valve set according to claim 1, wherein the communication port of the CPU control station is connected with the upper computer through ethernet.

3. The warning system of a blast furnace pressure regulating valve set according to claim 1, wherein an audio interface of the upper computer is connected with the warning sound.

4. The warning system of a blast furnace pressure regulating valve set according to claim 1, wherein a display screen is arranged on the upper machine position.

5. The warning system of a blast furnace pressure regulating valve set according to claim 1, wherein the inlet end of the total regulating valve set is provided with a quick-opening valve for entering blast furnace gas, and the outlet end is provided with a first outlet blind plate valve and a first outlet butterfly valve in sequence for discharging blast furnace gas.

6. The warning system of a blast furnace pressure regulating valve unit according to claim 5, wherein the inlet end of the TRT turbine unit is sequentially connected to an inlet blind plate valve and an inlet butterfly valve, and the outlet end is sequentially connected to a second outlet blind plate valve and a second outlet butterfly valve.