CN201473561U

CN201473561U - Sub-lance body

Info

Publication number: CN201473561U
Application number: CN 200920230763
Authority: CN
Inventors: 曹卫文; 郭晓庆; 雷雨田
Original assignee: Suzhou Baolian Heavy Industry Co Ltd
Current assignee: Suzhou Baolian Heavy Industry Co Ltd
Priority date: 2009-09-08
Filing date: 2009-09-08
Publication date: 2010-05-19
Anticipated expiration: 2019-09-08

Abstract

The utility model discloses a sub-lance body, which comprises an outer tube, a middle tube, an inner tube, a probe holding part, a cooling water inlet pipe, a cooling water outlet pipe and a probe compensation cable, wherein the inner tube is sleeved in the middle tube, the middle tube is sleeved in the outer tube, one end of the inner tube is connected with the middle tube into a whole, the other end thereof penetrates through the middle tube and extends out of the outer tube, a gap is formed between two ends of the middle tube and the outer tube and used for contraction during the heat expansion of the middle and outer tubes, the probe holding part is screwed into the outer tube from the lower part thereof and used for holding the probe, the cooling water inlet and outlet pipes are arranged at the upper part of the outer tube, and an opening is formed on the middle tube; a communicated space is formed by the space between the outer and middle tubes as well as the space between the middle and inner tubes, so that the cooling water can flow from the cooling water inlet pipe into the space of the outer and middle tubes, and flow out of the cooling water outlet pipe through the space of the middle and inner tubes; and the probe compensation cable is arranged in the inner tube and connected with the probe holding part.

Description

Sublance body

Technical field

The utility model relates to a kind of sublance body, refers in particular to a kind of sublance body of smelting usefulness, belongs to smelt the specific equipment technical field.

Background technology

In smelting process, need to measure the parameter in the stove, adopt sublance to carry out usually, sublance mainly carries out following measurement in convertor steelmaking process: (1) measures the molten steel degree of depth in the molten bath; (2) measure the carbon content (TSC probe) of molten steel in the molten bath in the blowing; (3) blow end point is measured the oxygen level and the carbon content (TSO probe) of molten steel in the molten bath; (4) measure molten metal pool level (TSO probe); The measurement of the temperature of molten steel is the same with the thermometric principle of ordinary hot galvanic couple in the above-mentioned project; Measure the carbon content of molten steel in the molten bath in the blowing, the carbon content of measuring molten steel in the molten bath in the sublance blowing adopts the rapid crystallization of molten steel to decide the carbon method, and its ultimate principle is based on iron-carbon diagram; Blow end point is measured the oxygen level and the carbon content of molten steel in the molten bath, and the oxygen level of endpoint molten steel (O) depends primarily on the oxygen electromotive force (mV) and the temperature (t) of molten steel, that is: 0 (10-6)=f (t, mV); By popping one's head in TSO, measure the oxygen electromotive force (mV) and the temperature (t) of terminal point molten steel, can calculate the oxygen level in the molten steel; When converter smelting endpoint, the C in the molten steel, Mn, P, constituent contents such as S further reduce, unique increase be 0 content, when low C content, C content and 0 content in the molten steel have very strong corresponding relation, promptly C * the O in the steel is a constant E, E=C * O; Record and get oxygen level in the steel, can calculate according to the E value and get carbon content, C=E/O in the molten steel; Other application: (1) level gauging that sublance carried out, be used for instructing blowing rifle position, understand the erosion condition of converter, to stably manufactured, safeguard that converter plays effect timely; (2) sampling of sublance, measurement are convenient to sum up the blowing rule, improve and Optimizing operation; The sampling of sublance, measurement, be the temperature variation in the research converting process, take off C, remove P, go the S rule that process data is provided, by these these data, the slag making and the oxygen supply system of converter have in time been optimized, summed up the blowing technology of 120t top and bottom combined blown converter in the short period of time, stable when making converter smelting, splash is few, reaching products fast, reach effect and brought into play great role for three steel-making of Ji steel; The measurement situation of sublance, in the process of smelting one heat steel, mainly carried out following twice measurement: measure in (1) blowing, temperature, carbon content, sampling with TSC probe measurement molten bath are used for process control, calculate blowing oxygen quantity and refrigerant add-on again; (2) finishing blowing is measured, and temperature, oxygen level, carbon content, molten metal pool level, sampling with TSO probe measurement molten bath are used to judge terminal point, instruct alloying and the position control of blowing rifle; Sublance is used for the process control of converter steelmaking, and the success ratio and the precision of measurement are extremely important, and main influence factor has the quality of probe and the depth of penetration of probe; When using the carbon content of sublance TSO measurement, should note the influence of converter bottom blowing effect; Because the long-pending of C * O that sublance equipment is got is definite value, and the long-pending bottom blowing effect that depends on of the actual C * O of top and bottom combined blown converter, under the condition that the bottom blowing effect changes, carbon content that sublance TSO measures and actual carbon content show regular deviation; The effect that sublance is produced in converter, sublance have changed the control mode of traditional converter in the application of converter production, and continuity, high efficiency that converter is produced strengthen, and production capacity improves; Reduce the number of falling the heat, shorten smelting cycle, the production capacity of converter is improved; Terminal point hits the raising of level, add sublance not the terminal point that carried out of the institute of falling the stove measure, be convenient to judge terminal point, make the number of falling the heat more traditional experience make steel every stove steel and reduce every stove steel saving 2min time 1 time; The consumption that converter is produced reduces, and produces to imitate and improves; The use of sublance has improved the equipment of converter, makes stable operation, and splash reduces, and the level of once hitting significantly improves, and has reduced to blow blowing of causing later and decrease and consume, and on average saves iron and steel stock and consumes 5kg/t; Alleviate worker's labour intensity, improved Working environment.Sublance comprises sublance body, and at present, the sublance of domestic usefulness is dependence on import basically, and price is very expensive.

The utility model content

At the technical problem of above-mentioned existence, the purpose of this utility model is: proposed a kind of simple in structure, practical sublance body.

Technical solution of the present utility model is achieved in that a kind of sublance body, comprises outer tube, middle pipe, interior pipe, probe handle part, cooling water inlet pipe, cooling water outlet pipe, probe compensation cable; Pipe box is located in the middle pipe in described; Pipe box is located in the outer tube in described; One end and the middle pipe of interior pipe are connected as a single entity, and the other end passes middle pipe, outer tube extends; Be provided with the gap between the two ends of pipe and outer tube in described, stretching when described gap is used for the thermal expansion of pipe and outer tube; Described probe handle part, from the bottom screw-in of outer tube, described probe handle part is used for controlling probe; Described cooling water inlet pipe, cooling water outlet pipe are arranged on the top of outer tube, pipe is provided with opening in described, like this, space between outer tube and middle pipe, middle pipe forms a space that is communicated with the space of interior pipe, water coolant can from described cooling water inlet pipe enter outer tube and space between pipe, the space of pipe and interior pipe therefrom then, the cooling water outlet pipe of flowing through flows out; Described probe compensation cable is arranged in the interior pipe, and links to each other with the probe handle part;

Preferably, also be provided with channel of nitrogen on the described sublance body, described channel of nitrogen comprises interior pipe, blows out the cleaning that keeps probe to control the device surface from controlling device.

Preferably, described outer tube stretches into the part in the molten steel, adopts copper product to make, and length 5m can prevent effectively that the situation of dry slag from taking place.

Preferably, be provided with the gap between the two ends of described middle pipe and outer tube, be arranged on 20-50mm.

Preferably, described probe handle part, from the bottom screw-in of outer tube, its hollow space is communicated with interior pipe, and all gapped with the end of interior pipe and middle pipe.

The sublance body of the utility model scheme, simple in structure, practical; Sublance has changed the control mode of traditional converter in the application of converter production, and continuity, high efficiency that converter is produced strengthen, and production capacity improves; Reduce the number of falling the heat, shorten smelting cycle, the production capacity of converter is improved; Terminal point hits the raising of level, add sublance not the terminal point that carried out of the institute of falling the stove measure, be convenient to judge terminal point, make the number of falling the heat more traditional experience make steel every stove steel and reduce every stove steel saving 2min time 1 time; The consumption that converter is produced reduces, and produces to imitate and improves; The use of sublance has improved the equipment of converter, makes stable operation, and splash reduces, and the level of once hitting significantly improves, and has reduced to blow blowing of causing later and decrease and consume, and on average saves iron and steel stock and consumes 5kg/t; Alleviate worker's labour intensity, improved Working environment.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified:

Fig. 1 is the part cut-away view of sublance body of the present utility model;

Wherein: 1, interior pipe; 2, middle pipe; 3, outer tube; 4, probe handle part; 5, cooling water inlet pipe; 6, cooling water outlet pipe; 7, probe compensation cable; 8, gap; 9, opening; 10, channel of nitrogen.

Embodiment

As shown in Figure 1, a kind of sublance body described in the utility model, pipe 1, middle pipe 2, outer tube 3, probe handle part 4, cooling water inlet pipe 5, cooling water outlet pipe 6, probe compensation cable 7 in comprising; Manage in 2 during pipe 1 is set in described; Pipe 2 is set in the outer tube 3 in described; One end and the middle pipe of interior pipe are connected as a single entity, and the other end passes middle pipe, outer tube extends; Be provided with gap 8 between the two ends of pipe and outer tube in described, stretching when described gap 8 is used for the thermal expansion of pipe and outer tube; Described probe handle part 7, from the bottom screw-in of outer tube 3, described probe handle part 7 is used for controlling probe; Described cooling water inlet pipe 5, cooling water outlet pipe 6 are arranged on the top of outer tube 3, pipe is provided with opening 9 in described, like this, space between outer tube and middle pipe, middle pipe forms a space that is communicated with the space of interior pipe, water coolant can from described cooling water inlet pipe enter outer tube and space between pipe, the space of pipe and interior pipe therefrom then, the cooling water outlet pipe of flowing through flows out; Manage in 1 in described probe compensation cable 7 is arranged on, and link to each other with probe handle part 4;

Also be provided with channel of nitrogen 10 on the described sublance body, pipe 1 in described channel of nitrogen comprises is controlled device 4 from probe and is blown out, the cleaning that keeps probe to control the device surface.

Described outer tube 3 stretches into the part in the molten steel, adopts copper product to make, and length 5m can prevent effectively that the situation of dry slag from taking place.

Be provided with the gap between the two ends of pipe and outer tube in described, be arranged on 20-50mm.

Described probe handle part 4, from the bottom screw-in of outer tube 4, its hollow space is communicated with interior pipe 1, and all gapped with the end of interior pipe 1 and middle pipe 2, the about 20-50mm in gap.

The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1. a sublance body is characterized in that: comprise outer tube, middle pipe, interior pipe, probe handle part, cooling water inlet pipe, cooling water outlet pipe, probe compensation cable; Pipe box is located in the middle pipe in described; Pipe box is located in the outer tube in described; One end and the middle pipe of interior pipe are connected as a single entity, and the other end passes middle pipe, outer tube extends; Be provided with the gap between the two ends of pipe and outer tube in described, stretching when described gap is used for the thermal expansion of pipe and outer tube; Described probe handle part, from the bottom screw-in of outer tube, described probe handle part is used for controlling probe; Described cooling water inlet pipe, cooling water outlet pipe are arranged on the top of outer tube, pipe is provided with opening in described, like this, space between outer tube and middle pipe, middle pipe forms a space that is communicated with the space of interior pipe, water coolant can from described cooling water inlet pipe enter outer tube and space between pipe, the space of pipe and interior pipe therefrom then, the cooling water outlet pipe of flowing through flows out; Described probe compensation cable is arranged in the interior pipe, and links to each other with the probe handle part.

2. sublance body according to claim 1 is characterized in that: also be provided with channel of nitrogen on the described sublance body, described channel of nitrogen comprises interior pipe, blows out the cleaning that keeps probe to control the device surface from controlling device.

3. sublance body according to claim 1 is characterized in that: described outer tube stretches into the part in the molten steel, adopts copper product to make, and length 5m can prevent effectively that the situation of dry slag from taking place.

4. sublance body according to claim 1 is characterized in that: be provided with the gap between the two ends of pipe and outer tube in described, be arranged on 20-50mm.

5. sublance body according to claim 1 is characterized in that: described probe handle part, and from the bottom screw-in of outer tube, its hollow space is communicated with interior pipe; And it is all gapped with the end of interior pipe and middle pipe.