Coke oven hearth plate sleeve control tool

Abstract

The utility model relates to a coke oven hearth plate sleeve control tool, which comprises a vertical rod (2), and is characterized in that the vertical rod (2) is round steel, the bottom end and the middle part of the vertical rod are respectively sleeved and fixed with an annular template (1, 3), so that the vertical rod is vertical to the plane of the annular template; a round steel plate (4) is horizontally and fixedly welded to the top end of the vertical rod, a cross-shaped round steel support is fixedly welded to the center of the upper surface of the round steel plate, and line pendants (6) are arranged at the top ends of two adjacent supporting rods (5) of the cross-shaped round steel support respectively. And when the vertical rod is inserted into the coke oven hearth plate sleeve, the circular steel plate (4) and the coke oven hearth plate sleeve are concentric. The coke oven hearth plate sleeve control tool has the advantages that the control tool is simple in structure and convenient to manufacture, the control over the perpendicularity of the sleeve is enhanced, the first-pass yield of the perpendicularity after installation is completed is improved, and the installation and inspection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an auxiliary tool for controlling the verticality of a casing, in particular to a casing control tool for a coke oven bed plate. Background Art

[0002] Coke oven is an important market and section of our company's metallurgical projects. The installation of hearth plate casing has always been one of the key points and difficulties in the civil construction of coke oven. At present, the technology of hearth plate casing installation is becoming more and more mature, and various methods, tools and measures are becoming simpler, more complete and more novel, which is in line with the needs of current social scientific and technological progress and market competition.

[0003] The National Energy Group's Xilaifeng Coking 360 Project has extremely strict requirements for quality control, especially for the key process of "coke oven bed plate casing installation", which is inspected as the core process. From the quality of raw materials to the installation position, spacing, and verticality, each link is strictly marked according to the drawings and standard specifications, and each link is inspected item by item. This leads to poor installation and inspection efficiency, low verticality inspection efficiency and accuracy, and labor-intensive and time-consuming.

[0004] Therefore, the known coke oven hearth plate sleeve verticality control method has the above-mentioned various inconveniences and problems. Utility Model Content

[0005] The purpose of the utility model is to provide a safe and reliable coke oven hearth plate casing control tool.

[0006] To achieve the above objectives, the technical solution of the present invention is:

[0007] A coke oven bed plate casing control tool includes a vertical rod and is characterized by:

[0008] The vertical pole is made of round steel, and a circular template is fixed on the bottom and middle of the vertical pole so that the vertical pole is perpendicular to the plane of the circular template; a circular steel plate is horizontally welded to the top of the vertical pole, and a cross-shaped round steel bracket is welded to the center of the upper surface of the circular steel plate. The tops of the two adjacent support rods of the cross-shaped round steel bracket are each provided with a plumb line;

[0009] Wherein: when the vertical rod is inserted into the coke oven bed plate sleeve, the circular steel plate and the coke oven bed plate sleeve are concentric.

[0010] The coke oven hearth plate casing control tool of the present invention can be further implemented by adopting the following technical measures.

[0011] The aforementioned coke oven hearth plate casing control tool, wherein the length of the vertical rod is ≥200mm.

[0012] The aforementioned coke oven hearth plate casing control tool, wherein the thickness of the annular template is a wooden template ≥10mm.

[0013] The aforementioned coke oven bed plate casing control tool, wherein the outer diameter of the annular template is ≥41 mm.

[0014] After adopting the above technical solution, the coke oven bed plate casing control tool of the utility model has the following advantages:

[0015] 1. The control tool has a simple structure and is easy to manufacture;

[0016] 2. Strengthened the control of the verticality of the casing, improved the first-time pass rate of verticality after installation, and improved the efficiency of installation and inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a casing control tool according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments and the accompanying drawings. Example

[0019] The coke oven model is a JNDX3-6.78m ramming coke oven. The single coke oven's floor casing consists of a downpipe and downspout pipe. Both are seamless pipes. The downspout pipe measures φ48.3*3.5mm, is 549mm long, and weighs 2.13kg per pipe. There are 2,508 of these pipes in a single coke oven. The downpipe measures φ133*4.0mm, is 585mm long, and weighs 7.44kg per pipe. There are 2,814 of these pipes in a single coke oven.

[0020] The main function of the downspout and downpipe is to inject oxygen, coal gas, or fuel into the furnace, creating a strong airflow. This improves the furnace temperature, gas, and coke flow. The layout of the flow is a key factor influencing the combustion process, and by adjusting combustion conditions, it improves combustion efficiency and coke quality. The downspout installation accuracy requirements are: ±3mm spacing, +5 to -20mm elevation, and 2mm verticality. The main difference in the downpipe's accuracy lies in the elevation of 0 to -20mm.

[0021] Coke oven bed plate casing installation construction process:

[0022] Casing delivery → acceptance of materials by five parties → pouring of the coke side branch flue (reservation of wire rack steel bars) → installation of the bottom template of the coke oven hearth slab → tying of steel bars for the main beam and secondary beam → marking of the hearth slab → installation and fixation of the casing base → tying of steel bars for the bottom layer of the hearth slab → tying of steel bars for the surface layer of the hearth slab → installation of the control wire rack on the machine side and coke side → installation of the coke oven centerline channel steel → initial placement of the hearth slab casing → installation of the two-way angle steel of the fixing frame → pulling of the casing control line → making auxiliary tools for the fixed formwork → using auxiliary tools to fine-tune the casing → making verticality control tools → installation of casing → using tools to check the spacing, elevation and verticality → accurate welding and fixing → removal of auxiliary tools → installation and reinforcement of the beam side formwork → acceptance and pouring.

[0023] Manufacturing method of the coke oven bed plate casing control tool of the utility model:

[0024] Please refer to Figure 1 The coke oven hearth plate casing control tool of the present invention comprises a vertical rod 2, which is a round steel. The bottom end and the middle part of the vertical rod are respectively fitted with a ring template 1 and 3, so that the vertical rod is perpendicular to the plane of the ring template; a circular steel plate 4 is horizontally welded to the top of the vertical rod, and a cross-shaped round steel bracket is welded to the center of the upper surface of the circular steel plate. The tops of the two adjacent support rods 5 of the cross-shaped round steel bracket are each provided with a plumb bob 6;

[0025] When the upright is inserted into the coke oven hearth sleeve, the circular steel plate 4 is concentric with the coke oven hearth sleeve. The upright is 200 mm long. The annular templates 1 and 3 are 10 mm thick wooden templates. The outer diameter of the annular templates 1 and 3 is 41 mm.

[0026] The manufacturing method of the coke oven bed plate casing control tool of the utility model comprises the following steps:

[0027] The first step is to use φ16 round steel to make a cylindrical upright 2, which is cut into 200mm lengths and can be shortened or lengthened appropriately.

[0028] The second step is to use a 10mm thick template to make the bottom and middle clamping rings of the component. The template raw material is cut and a hole is drilled in the center to make a ring template 1, 3 with an outer diameter of 41mm and an inner diameter of 17mm. The ring template is then inserted into the middle part and bottom of the main rod, and glue is used to firmly bond the ring template 1 to the cylindrical vertical rod 2. The main function of the ring template is to ensure that the verticality control tool does not tilt when inserted into the casing.

[0029] The third step is to use 3mm steel plate to cut and make a φ48.3mm circular iron plate as the circular steel plate 4 on the top surface of the component, and punch a hole in the center of the circle, align the center of the circular steel plate with the center of the cylindrical pole and weld them.

[0030] The fourth step is to use φ8mm round steel to cut into 200mm length sections of support rods 5 longitudinal and transverse extension rods, and weld the longitudinal extension rods and transverse extension rods 5 perpendicularly to the plane of the circular steel plate 4 top center plate.

[0031] The fifth step is to find two conventional line sinkers 6 and tie them to the tops of the vertical and horizontal extension rods 5. Through the above five steps, a simple and easy-to-use verticality control tool is completed.

[0032] Key points for the construction and operation of the coke oven bed plate casing control tool of this utility model:

[0033] (1) The use of the tool is described in detail, and the entire casing installation process is not explained. Therefore, the production of wire racks and auxiliary tools is omitted, and the use of the verticality control tool is directly discussed.

[0034] (2) After the center line of the casing is marked, the base is aligned and installed in place, and then the lower nozzle is rotated and inserted into the base.

[0035] (3) Insert the verticality control tool into the casing. Because the size of the retaining ring is basically consistent with the inner diameter of the casing, the inside of the casing should be checked and cleaned again before insertion to ensure that there is no debris.

[0036] (4) It is also because of the design of the clamping ring size that after the verticality control tool is inserted, the center of the top circular plate is basically the center of the casing. By checking and controlling the center, the position of the casing can be checked.

[0037] (5) The inspection of the casing position is mainly carried out by controlling the spacing and checking with the help of the sizing tool, and combining the center deviation of the cross wire and the top center plate to check. After the center position and spacing of the casing top surface are qualified, the verticality may not be qualified at the same time, because the flatness of the template, or the deliberate adjustment of the spacing so that the top and bottom centers are not in line, etc., and the original position may cause deviations in verticality.

[0038] (6) Therefore, after the top surface position is adjusted to the required level, wait for the plumb lines on both sides of the tool to enter a stationary state. If the plumb line shakes greatly, manual intervention can be used to make it enter a stationary state as soon as possible.

[0039] (7) Use the coil and plumb bobs on both sides to check the verticality. The plumb bobs should be hung to the middle of the base and flexibly moved to avoid the steel bars of the furnace bed.

[0040] (8) Measure six data points in the top, middle and bottom directions respectively, and make adjustments to ensure that the verticality is controlled within 2 mm.

[0041] (9) Recheck the verticality, center position and relative spacing. If they are qualified, they are fixed with fixed wire racks by spot welding.

[0042] The above embodiments are intended only to illustrate the present invention and are not intended to limit the present invention. Persons skilled in the art may make various modifications or variations without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions are intended to fall within the scope of the present invention and are defined by the claims.

Claims

1. A coke oven bed plate casing control tool, comprising a vertical rod (2), characterized in that: The vertical pole (2) is a round steel, and a circular template is fitted and fixed to the bottom and middle of the vertical pole so that the vertical pole is perpendicular to the plane of the circular template; a circular steel plate (4) is horizontally welded to the top of the vertical pole, and a cross-shaped round steel bracket is welded to the center of the upper surface of the circular steel plate, and the tops of two adjacent support rods (5) of the cross-shaped round steel bracket are each provided with a plumb bob (6); When the vertical rod is inserted into the coke oven bed plate sleeve, the circular steel plate (4) is concentric with the coke oven bed plate sleeve.

2. The coke oven bed plate casing control tool according to claim 1, characterized in that: The length of the vertical pole is ≥200mm.

3. The coke oven bed plate casing control tool according to claim 1, characterized in that: The thickness of the annular template is a wooden template that is ≥10 mm.

4. The coke oven bed plate casing control tool according to claim 1, characterized in that: The outer diameter of the annular template is 41 mm.

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