Medium sleeve inclination measuring device

Abstract

The utility model relates to a medium sleeve inclination measuring device which is arranged between a medium sleeve of a blast furnace and a flange of a belly pipe. A through hole is formed in the middle of the fixing frame, and the fixing frame is arranged on the peripheral face of the belly pipe in a sleeving mode; the range finder horizontal placing plate is vertically fixed on the outer wall of the front end of the fixing frame; the range finders are mounted on the range finder horizontal placement plate at intervals, the mounting directions of the range finders are parallel to the axis of the through hole of the fixing frame, and the distances between the range finders and the through hole are the same; the support fixing plate is vertically fixed to the outer wall of the rear end of the fixing frame, and a plurality of through holes used for being in threaded connection with flanges on the peripheral face of the belly pipe are formed in the support fixing plate. The inclination angle measuring device is additionally arranged outside the middle sleeve of the blast furnace, so that the inclination angle of the middle sleeve of the blast furnace is monitored, the middle sleeve body does not need to be changed at all, the integrity and the stability of the structure of the blast furnace are ensured, and the potential influence on production equipment due to detection operation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blast furnace operation and maintenance technical field, specifically is a middle sleeve inclination measuring device. BACKGROUND

[0002] In the production process of the blast furnace, the tuyere combined brick is eroded and damaged by harmful elements such as K, Na, Zn and Pb for a long time, which causes the tuyere combined brick to rise and constantly extrude the lower part of the middle sleeve, resulting in the middle sleeve being warped to different degrees, which changes the angle of the tuyere and has a certain influence on the furnace and the coal injection, and also causes a gap between the middle sleeve and the large sleeve, which not only causes the coal gas in the furnace to leak into the sleeve and burn, causing the sleeve to burn, but also causes great harm to personal safety, and serious accidents such as explosion may occur, causing serious consequences.

[0003] In the current production process of the blast furnace, the on-site workers can only visually observe the inclination of the middle sleeve by experience, and replace it, but if the replacement is not timely, when the blue flame appears at the tuyere, the phenomenon of gas leakage has already occurred. Therefore, the opportunity for replacing the middle sleeve cannot be obtained in time, which not only causes a large amount of economic loss, but also easily endangers personal safety.

[0004] Therefore, we design a middle sleeve inclination measuring scheme, which can master the inclination angle of the middle sleeve in real time and replace the middle sleeve in a planned manner to prevent accidents. CONTENT OF THE UTILITY MODEL

[0005] The utility model solves the technical problem of the prior art and provides a middle sleeve inclination measuring device for detecting the inclination angle of the middle sleeve of the blast furnace without contacting the middle sleeve.

[0006] The utility model solves the technical problem by the following technical scheme, a middle sleeve inclination measuring device is arranged between the middle sleeve and the flange of the straight blow pipe of the blast furnace, and comprises the following parts.

[0007] The fixed frame has a through hole in the middle and is sleeved on the outer peripheral surface of the straight blow pipe;

[0008] The range finder horizontal placement plate is vertically fixed on the front end outer wall of the fixed frame;

[0009] The at least one pair of range finders are installed on the range finder horizontal placement plate with a certain interval, the installation direction of the range finders is parallel to the axis of the through hole of the fixed frame, and the distance from each range finder to the through hole is the same;

[0010] The support fixed plate is vertically fixed on the rear end outer wall of the fixed frame, and a plurality of through holes for screwing with the flange on the outer peripheral surface of the straight blow pipe are formed in the support fixed plate.

[0011] The technical problems to be solved by the utility model can also be implemented by the following technical scheme, the middle sleeve inclination measuring device, a range finder positioning plate is vertically fixed in the middle part of the fixing frame, the range finder positioning plate is perpendicular to the axis of the through hole, the space between the range finder positioning plate and the range finder horizontal placement plate forms a range finder installation space, and the range finder is installed in the range finder installation space.

[0012] The technical problems to be solved by the utility model can also be implemented by the following technical scheme, the middle sleeve inclination measuring device, the range finder is provided with two, and the two range finders are symmetrically arranged on the range finder horizontal placement plate.

[0013] The technical problems to be solved by the utility model can also be implemented by the following technical scheme, the middle sleeve inclination measuring device, the middle sleeve inclination angle beta = artan ((|B2-B1|) / L1), the difference between the distances measured by the two range finders is B2-B1, and L1 is the distance between the two range finders.

[0014] Compared with the prior art, the utility model has the beneficial technical effects that:

[0015] (1) a set of inclination angle measuring device is additionally arranged outside the blast furnace middle sleeve, the inclination angle of the blast furnace middle sleeve is monitored, the blast furnace structure integrity and stability are ensured without any modification of the middle sleeve body, and potential influence on the production equipment caused by detection operation is avoided;

[0016] (2) the measuring device is composed of a small range finder and a matching fixing component, the overall structure is compact, does not occupy too much space resource, is convenient to install and maintain, and ensures the neatness and efficiency of the blast furnace surrounding operation environment;

[0017] (3) the inclination angle of the blast furnace middle sleeve can be easily obtained by reading the data of the range finder and combining preset formula calculation, in addition, the maximum allowable inclination threshold can be preset by the factory staff, and once the actual measurement value exceeds the threshold, rapid judgment can be made, and the response speed and accuracy of the on-site operation are effectively improved;

[0018] (4) the measurement method significantly reduces the number of close contact between the workers and the blast furnace, thereby greatly reducing the risk of safety accidents caused by high temperature, high pressure and other environmental factors, and providing a safer working environment for the workers;

[0019] (5) the matching equipment structure of the measuring device is simple, the processing and manufacturing difficulty is low, the cost is controllable, the design is easy to understand, the daily inspection and maintenance are convenient, and the long-term stable operation of the measuring system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a front view structural schematic diagram of the utility model;

[0021] Fig. 2 It is a partial structural schematic diagram of the utility model fixed frame.

[0022] Reference signs: 1, fixed frame; 2, range finder positioning plate; 3, range finder horizontal placement plate; 4, range finder; 5, support fixed plate; 6, straight blow pipe; 7, middle sleeve; 8, through hole; 9, flange. DETAILED DESCRIPTION

[0023] The specific technical scheme of the utility model is further described below with reference to the drawings, so that the person skilled in the art can further understand the utility model without limiting its rights.

[0024] Example 1, refer to Figs. 1-2 A middle sleeve inclination measuring device is arranged between the middle sleeve 7 and the flange of the straight blow pipe 6 of the blast furnace, which comprises:

[0025] The fixed frame 1 is formed into a cylindrical structure, which is welded by a steel plate with a thickness of 10 mm, has a through hole in the middle, is sleeved on the outer peripheral surface of the straight blow pipe 6, and is vertically provided with a range finder positioning plate 2 in the middle of the fixed frame 1. The range finder positioning plate 2 is formed into a substantially annular plate structure, is perpendicular to the axis of the through hole, and forms a range finder 4 installation space with the space between the range finder positioning plate 2 and the following range finder horizontal placement plate 3. The following range finder 4 is installed in the range finder installation space;

[0026] The range finder horizontal placement plate 3 is formed into a substantially annular plate structure, is vertically fixed on the front end outer wall of the fixed frame 1, and is formed into a substantially annular plate structure.

[0027] A pair of range finders 4, which can be small range finders, can be selected according to the use requirements of the prior art, are symmetrically installed on the range finder horizontal placement plate 3, and are installed in the same distance from the through hole.

[0028] The support fixed plate 5 is formed into a substantially annular plate structure, is vertically fixed on the rear end outer wall of the fixed frame 1, has a plurality of through holes 8 for screwing with the flange on the outer peripheral surface of the straight blow pipe 6, and can be screwed on the flange plate 9 of the straight blow pipe 6 by a bolt fastener.

[0029] The use principle of the middle sleeve 7 inclination measuring device in example 1 is:

[0030] First, the sleeve 7 tilt measuring device is installed on the outer peripheral surface of the blast furnace blowpipe 6. At the beginning of the measurement, we first obtain the distance value L1 between the two distance meters 4. During the measurement, we open the two distance meters 4, make the laser emit to the end surface of the blast furnace sleeve 7, and thus obtain the distance data of the two distance meters 4 to obtain distances B1 and B2. B1, B2 and the known data L1 are brought into the formula β = artan((|B2-B1|) / L1), and the tilt angle β of the sleeve 7 at this time can be calculated.

Claims

1. A device for measuring the inclination of a middle jacket, which is disposed between the middle jacket and the flange of the straight blowpipe of a blast furnace, characterized in that: It comprises: A fixed frame with a through hole in the middle, which is sleeved on the outer circumferential surface of the straight blowing pipe; A range finder horizontal placement plate vertically fixed on the front end outer wall of the fixed frame; At least one pair of range finders, which are installed on the range finder horizontal placement plate with a certain interval, and the installation direction of the range finders is parallel to the axis of the through hole of the fixed frame, and the distance from each range finder to the through hole is the same; A support fixing plate vertically fixed on the rear end outer wall of the fixed frame, and a plurality of through holes for screwing with the flanges on the outer circumferential surface of the straight blowing pipe are formed on the support fixing plate.

2. A device for measuring the inclination of a sleeve according to claim 1, characterized in that: A range finder positioning plate is vertically fixed in the middle of the fixed frame, which is perpendicular to the axis of the through hole, and the space between the range finder positioning plate and the range finder horizontal placement plate forms a range finder installation space, and the range finders are installed in the range finder installation space.

3. A device for measuring the inclination of a sleeve according to claim 1, characterized in that: The range finders are provided with two, and the two range finders are symmetrically arranged on the range finder horizontal placement plate.

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