CN210568424U

CN210568424U - Novel preheating gun device

Info

Publication number: CN210568424U
Application number: CN201921461624.8U
Authority: CN
Inventors: 焦志远; 孟娜; 赵腾; 张虎; 陈志东
Original assignee: China National Heavy Machinery Research Institute Co Ltd
Current assignee: China National Heavy Machinery Research Institute Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-05-19
Anticipated expiration: 2029-09-04

Abstract

A novel preheating gun device comprises a gun body, wherein an ignition cylinder is arranged at the other end of a gun rod, the rear part of the gun body is also connected with a plurality of medium inlet pipelines, the medium inlet pipelines are connected with corresponding medium metal hoses, the other ends of the medium metal hoses are connected with corresponding medium interfaces of a fuel control system, and a signal end of the fuel control system is connected with a PLC control system through a cable; the muzzle of the gun head is provided with a low-calorific value gas channel outlet, a flame detector channel outlet, an igniter channel outlet, a high-calorific value gas channel outlet and an oxygen channel outlet; according to different working conditions, a programmed automatic control program is implanted into the PLC system, and a corresponding low-temperature, high-temperature or heat-preservation baking mode is selected in the operation process, so that the PLC system has the advantages of simple structure, energy conservation, high efficiency, safety, reliability and low cost.

Description

Novel preheating gun device

Technical Field

The utility model relates to a preheat the rifle, in particular to novel preheat rifle device.

Background

The preheating gun system is one of main devices of a ladle refining furnace, and mainly comprises a preheating gun body, an auxiliary structure and a control system thereof. The reasonability of the structure can directly influence the normal operation of refining furnace equipment, and plays a very important role in the whole smelting process. In the production process, devices such as a ladle, a vacuum tank and the like need to be baked, dried and heated through a preheating gun. At present, each steel mill mainly uses a single high-calorific-value or low-calorific-value gas preheating gun for ignition and heating; high calorific value gas is expensive, increases production cost, and is difficult to control at a low temperature stage; the low-heat value gas is difficult to ignite and has low heating speed, and the heating effect can hardly be achieved at the high-temperature stage; in the actual operation process, two procedures are often adopted: the equipment is firstly dried at low temperature at a low-calorific-value gas station, baked to a certain temperature and then transported to a high-calorific-value gas station for high-temperature heating, so that the auxiliary time for production is too long, energy is wasted in the transportation process, and normal production is seriously influenced.

Disclosure of Invention

In order to overcome the not enough of above-mentioned prior art, the utility model aims to provide a novel preheating gun device can be according to the difference of different work condition to toasting the mode requirement, and nimble switching mode reduces the unnecessary gas extravagant, improves the availability factor of gas, has simple structure, energy-conserving high-efficient, safe and reliable and low cost's advantage.

In order to realize the purpose, the utility model discloses a technical scheme does:

a novel preheating gun device comprises a gun body formed by integrally connecting a gun head 1 and a gun rod 2, wherein a low-calorific-value gas channel outlet 9 is arranged at the center of a gun opening of the end face of the gun head 1, a flame detector channel outlet 10 and an igniter channel outlet 13 are respectively arranged on two sides of the low-calorific-value gas channel outlet 9, a plurality of high-calorific-value gas channel outlets 12 are arranged on the outer rings of the low-calorific-value gas channel outlet 9, the flame detector channel outlet 10 and the igniter channel outlet 13, and a plurality of oxygen channel outlets 11 are arranged on the outer ring of the high-calorific-value gas channel outlet 12; the other end of the gun body is provided with an ignition cylinder 3 and a plurality of medium inlet pipelines 4, the outlets of all channels on the end surface of the gun head 1 are respectively connected with a back connecting pipeline and pass through the whole gun body, wherein the outlet 13 of the ignition channel is connected to the ignition cylinder 3, and the outlet 9 of the low-calorific-value gas channel, the outlet 12 of the high-calorific-value gas channel and the outlet 11 of the oxygen channel are respectively connected with the outlet ends of the corresponding medium inlet pipelines 4; the inlet ends of the plurality of medium inlet pipelines 4 are respectively connected with the outlet ends of corresponding medium metal hoses 5, the medium metal hoses 5 are fixedly connected with the gun body through a support 7, the inlet ends of the medium metal hoses 5 are connected with corresponding medium interfaces of a fuel control system 6, and the signal end of the fuel control system 6 is connected with the corresponding signal end of a PLC (programmable logic controller) control system 8 through a cable.

An ultraviolet flame detector is arranged in the gun body and transmits data signals to the PLC control system 8 through a cable.

The fuel control system 6 comprises a high-calorific-value gas pipeline, a low-calorific-value gas pipeline, a water cooling pipeline, an oxygen pipeline, a protective gas pipeline 14, and control valves and instruments connected to the pipelines.

The instrument comprises a pressure gauge, a thermometer and a flow meter.

And a circulating water cooling pipeline connected with the corresponding medium inlet pipeline 4 is arranged in the gun body.

The protective gas pipeline 14 is divided into two branches, and the inlet end of the medium inlet pipeline 4 is respectively connected with a high heating value gas pipeline and a low heating value gas pipeline.

The medium in the protective gas pipeline 14 is nitrogen or inert gas.

The utility model has the advantages that:

the programmed automatic control program can be implanted into the PLC system according to different working conditions by arranging the high-calorific-value gas channel and the low-calorific-value gas channel, a corresponding baking mode is selected, ignition is carried out through high-calorific-value gas in a low-temperature mode, then low-calorific-value gas is started, and the high-calorific-value gas can be stopped after the low-calorific-value gas is combusted; in the heat preservation mode, the gas proportion of high-calorific value gas and low-calorific value gas can be automatically selected according to the heat preservation requirement of the working condition; in a high-temperature mode, high-calorific-value fuel gas is directly adopted; by arranging the water cooling pipeline, cooling water can be provided for the gun body and the gun head in a high-temperature environment, and the service life of the equipment is prolonged; a protective gas pipeline is arranged for purging protection of the gas pipeline in the working process so as to ensure the safety of the system; has the advantages of simple structure, energy conservation, high efficiency, safety, reliability and low cost.

Drawings

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

Fig. 2 is a cross-sectional view of the gun head of the present invention.

In the figure: 1. a gun head; 2. a gun rod; 3. an ignition cylinder; 4. a media inlet conduit; 5. a dielectric metal hose; 6. a fuel control system; 7. a support; 8. a PLC system; 9. a low heating value gas channel outlet; 10. a flame detector channel outlet; 11. an oxygen channel outlet; 12. a high calorific value gas channel outlet; 13. an igniter channel outlet; 14. and protecting the gas pipeline.

Detailed Description

The structure principle and the working principle of the present invention are further explained with the attached drawings as follows:

referring to fig. 1 and 2, a novel preheating gun device comprises a gun body formed by integrally connecting a gun head 1 and one end of a gun rod 2, wherein a low-calorific-value gas channel outlet 9 is arranged at the center of the gun mouth of the end face of the gun head 1, a flame detector channel outlet 10 and an igniter channel outlet 13 are respectively arranged on two sides of the low-calorific-value gas channel outlet 9, a plurality of high-calorific-value gas channel outlets 12 are arranged on the outer rings of the low-calorific-value gas channel outlet 9, the flame detector channel outlet 10 and the igniter channel outlet 13, and a plurality of oxygen channel outlets 11 are arranged on the outer ring of the high-calorific-value gas channel outlet 12; the other end of the gun body is provided with an ignition cylinder 3 and a plurality of medium inlet pipelines 4, the outlets of all channels on the end surface of the gun head 1 are respectively connected with a back connecting pipeline and pass through the whole gun body, wherein the outlet 13 of the ignition channel is connected to the ignition cylinder 3, and the outlet 9 of the low-calorific-value gas channel, the outlet 12 of the high-calorific-value gas channel and the outlet 11 of the oxygen channel are respectively connected with the outlet ends of the corresponding medium inlet pipelines 4; the inlet ends of the plurality of medium inlet pipelines 4 are respectively connected with the outlet ends of corresponding medium metal hoses 5, the medium metal hoses 5 are fixedly connected with the gun body through a support 7, the inlet ends of the medium metal hoses 5 are connected with corresponding medium interfaces of a fuel control system 6, and the signal end of the fuel control system 6 is connected with the corresponding signal end of a PLC (programmable logic controller) control system 8 through a cable.

An ultraviolet flame detector is arranged in the gun body.

The ultraviolet flame detector transmits the data signal to the PLC control system 8 through a cable, and the adjustment working condition can be judged according to the data read by the ultraviolet flame detector.

The fuel control system 6 comprises a high-calorific-value gas pipeline, a low-calorific-value gas pipeline, a water cooling pipeline, an oxygen pipeline, a protective gas pipeline 14, control valves and instruments connected to the pipelines, all the pipelines are connected to corresponding medium metal hoses, the opening of the valves is adjusted according to working conditions, and the working modes are switched.

The instrument comprises a pressure gauge, a thermometer and a flow meter.

And a circulating water cooling pipeline connected with the corresponding medium inlet pipeline 4 is arranged in the gun body, so that cooling water can be provided for the gun body and the gun head in a high-temperature environment, and the service life of equipment is prolonged.

The protective gas pipeline 14 is divided into two branches, the inlet end of the medium inlet pipeline 4 is respectively connected with a high heating value gas pipeline and a low heating value gas pipeline, and the pipelines are blown and protected in a working gap.

The medium in the protective gas pipeline 14 is nitrogen or inert gas.

The utility model discloses a theory of operation does:

in the actual production process, the system implants the programmed automatic control program into the PLC system 8 according to the requirements of working conditions; according to the difference of different working conditions on the requirements of the baking modes, the selection can be automatically and flexibly made: in the low-temperature baking mode, firstly, the high-calorific-value gas is ignited, then the low-calorific-value gas is started, and the high-calorific-value gas can be stopped after the low-calorific-value gas is combusted; in the heat preservation mode, the gas proportion of high-calorific value gas and low-calorific value gas can be automatically selected according to the heat preservation requirement of the working condition; in the high-temperature mode, high-calorific-value fuel gas is directly adopted.

The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. The utility model provides a novel preheat rifle device, includes the rifle body of constituteing by rifle head (1) and barral of a gun (2) body coupling, its characterized in that: a low-calorific-value gas channel outlet (9) is formed in the center of a gun mouth of the end face of the gun head (1), a flame detector channel outlet (10) and an igniter channel outlet (13) are formed in two sides of the low-calorific-value gas channel outlet (9), a plurality of high-calorific-value gas channel outlets (12) are formed in the outer rings of the low-calorific-value gas channel outlet (9), the flame detector channel outlet (10) and the igniter channel outlet (13), and a plurality of oxygen channel outlets (11) are formed in the outer ring of the high-calorific-value gas channel outlet (12); the ignition gun is characterized in that an ignition cylinder (3) and a plurality of medium inlet pipelines (4) are arranged at the other end of the gun body, outlets of all channels on the end face of the gun head (1) are respectively connected with the pipelines and run through the whole gun body in a backward connection mode, wherein an outlet (13) of an ignition channel is connected to the ignition cylinder (3), and an outlet (9) of a low-calorific-value gas channel, an outlet (12) of a high-calorific-value gas channel and an outlet (11) of an oxygen channel are respectively connected to one end of the corresponding medium inlet pipeline (4); the other ends of the medium inlet pipelines (4) are respectively connected with one end of a corresponding medium metal hose (5), the medium metal hose (5) is fixedly connected with the gun body through a support (7), the other end of the medium metal hose (5) is connected with a corresponding medium interface of the fuel control system (6), and a signal end of the fuel control system (6) is connected with a corresponding signal end of the PLC control system (8) through a cable.

2. The novel preheating gun device as claimed in claim 1, wherein: an ultraviolet flame detector is arranged in the gun body and transmits data signals to a PLC control system (8) through a cable.

3. The novel preheating gun device as claimed in claim 1, wherein: the fuel control system (6) is composed of a high-calorific-value gas pipeline, a low-calorific-value gas pipeline, a water cooling pipeline, an oxygen pipeline, a protective gas pipeline (14), and control valves and instruments connected to the pipelines.

4. The novel preheating gun device as claimed in claim 3, wherein: the instrument comprises a pressure gauge, a thermometer and a flow meter.

5. The novel preheating gun device as claimed in claim 1, wherein: and a circulating water cooling pipeline connected with the corresponding medium inlet pipeline (4) is arranged in the gun body.

6. The novel preheating gun device as claimed in claim 3, wherein: the protective gas pipeline (14) is divided into two branches, and the inlet end of the medium inlet pipeline (4) is respectively connected with a high heating value gas pipeline and a low heating value gas pipeline.

7. The utility model provides a novel preheat rifle device of claim 3 or 6, characterized in that: the medium in the protective gas pipeline (14) is nitrogen or inert gas.