CN108834248B - Copper pressure ring of submerged arc furnace and processing method thereof - Google Patents
Copper pressure ring of submerged arc furnace and processing method thereof Download PDFInfo
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- CN108834248B CN108834248B CN201810807015.7A CN201810807015A CN108834248B CN 108834248 B CN108834248 B CN 108834248B CN 201810807015 A CN201810807015 A CN 201810807015A CN 108834248 B CN108834248 B CN 108834248B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 143
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 143
- 239000010949 copper Substances 0.000 title claims abstract description 143
- 238000003672 processing method Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 16
- 230000000670 limiting effect Effects 0.000 claims description 20
- 238000005553 drilling Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 6
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/12—Arrangements for cooling, sealing or protecting electrodes
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a copper pressure ring of an ore smelting furnace, which comprises a plurality of copper pressure ring units, wherein each copper pressure ring unit comprises a copper pressure ring unit body, a cooling channel is arranged in each copper pressure ring unit body, each cooling channel comprises a transverse channel section and a plurality of U-shaped channel sections, the upper sections of a left runner and the upper sections of a right runner in the U-shaped channel sections are separated by middle plugs, and the lower sections of the left runner and the right runner are communicated with the lower sections of the middle runner, so that a cooling channel which reciprocates up and down and transversely extends is formed in each copper pressure ring unit body. The invention also provides a processing method of the copper pressure ring of the submerged arc furnace. The copper pressure ring of the submerged arc furnace does not need to be provided with the water through groove and the water through groove cover plate at the bottom of the copper pressure ring unit body, so that welding seams of the water through groove cover plate at the bottom of the copper pressure ring unit body are omitted, the phenomenon that the welding seams are directly exposed in a high-temperature environment to corrode, pull, crack and leak water is avoided, the service life of the copper pressure ring is prolonged, and production loss caused by hot shutdown is reduced.
Description
Technical Field
The invention relates to the technical field of metallurgical electric furnace equipment, in particular to a copper pressure ring of an ore smelting furnace and a processing method thereof.
Background
The ore-smelting furnace is also called an electric arc furnace or a resistance furnace, and is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent, solvent and the like, and is mainly used for producing ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrosilicon-manganese alloy and the like. The copper pressure ring is an important special water cooling device used in the submerged arc furnace, and is formed into an annular copper pressure ring by a plurality of (usually 6-10) copper pressure ring units, and is formed into an electrode holder together with other devices, so that the submerged arc furnace can stably and continuously work. When the submerged arc furnace runs, the electric arc generated between the electrode and the furnace burden can reach about 3000 ℃, high-temperature flue gas generated during smelting generates very high heat load on cooling equipment penetrating into the furnace, the environment is very bad, and particularly, for a copper pressure ring at the bottom of the submerged arc furnace, the bottom surface of the copper pressure ring is closer to the furnace burden surface, the environment temperature is higher, so that the copper pressure ring is more required to be cooled. If the copper pressure ring is damaged and leaked, the electrode holder cannot work normally, and the submerged arc furnace must be shut down for maintenance.
As shown in fig. 8-11, the existing copper pressure ring unit comprises a copper pressure ring unit body 01, a cooling channel 02 is arranged in the copper pressure ring unit body 01, and a water inlet 03 and a water outlet 04 are respectively arranged at two ends of the cooling channel 02. Since it is required to cool the bottom of such copper pressure ring, the cooling passage 02 includes a first lateral passage section 05, a second lateral passage section 06 and a third lateral passage section 07 provided at the bottom of the copper pressure ring unit body 01, the first lateral passage section 05 extending from the left side edge 011 to the right side edge 012 of the copper pressure ring unit body 01, the second lateral passage section 06 extending from the middle portion 013 to the left side edge 011 of the copper pressure ring unit body 01, the third lateral passage section 07 extending from the middle portion 013 to the right side edge 012 of the copper pressure ring unit body 01, a water passage groove 014 being provided at each of the left side edge 011 and the right side edge 012 of the bottom of the copper pressure ring unit body 01, the notches of the two water passage grooves 014 being opened to the left side wall and the right side wall of the bottom of the copper pressure ring unit body 01, respectively, the water passage groove 014 on the left side communicating the left end of the first lateral passage section 05 with the left end of the second lateral passage section 06, and the right end of the third lateral passage section 07; the notch of two water passing grooves 014 is respectively provided with a water passing groove cover plate 015, the notch of the water passing groove 014 is sealed by the water passing groove cover plate 015, and the edges of the two water passing groove cover plates 015 are respectively welded with the left side wall and the right side wall of the bottom of the copper pressure ring unit body 01. Because the welding seam 016 generated by welding the water tank cover plate 015 is exposed on the outer surface of the bottom of the copper pressure ring unit body 01 and can be exposed in the high-temperature environment of the submerged arc furnace for a long time, the welding seam 016 is easy to corrode, pull and crack to damage and leak water, and is easy to cause hot shutdown maintenance, so that the service life of the copper pressure ring is influenced.
Disclosure of Invention
The invention aims to solve the problem of providing the copper pressure ring of the submerged arc furnace, which does not need to arrange a water through groove and a welded water through groove cover plate at the bottom of a copper pressure ring unit body, so that a welding seam of the water through groove cover plate at the bottom of the copper pressure ring unit body is omitted, the phenomenon of corrosion, pull-out and water leakage caused by direct exposure of the welding seam in a high-temperature environment is avoided, the service life of the copper pressure ring is prolonged, and the production loss caused by hot shutdown is reduced.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a submerged arc furnace copper pressure ring, includes a plurality of copper pressure ring units, and copper pressure ring unit includes copper pressure ring unit body, is equipped with cooling channel in the copper pressure ring unit body, and cooling channel both ends are equipped with water inlet and delivery port, characterized by respectively: the cooling channel comprises a transverse channel section and a plurality of U-shaped channel sections, the transverse channel section is positioned at the top of the copper pressure ring unit body, and the U-shaped channel sections are sequentially arranged on the copper pressure ring unit body from left to right; the U-shaped channel section comprises a left channel, a middle plug and a right channel, wherein the left channel, the middle channel and the right channel extend longitudinally and are sequentially arranged from left to right, a limiting step is arranged in the middle channel, the middle plug is arranged in the upper section of the middle channel, the outer surface of the middle plug is tightly contacted with the inner side wall of the upper section of the middle channel, the lower end of the middle plug is contacted with the limiting step, and the lower section of the left channel is communicated with the lower section of the right channel through the lower section of the middle channel; the U-shaped channel sections are communicated through the transverse channel sections.
Typically, the bottom of the U-shaped channel section is at the bottom of the copper pressure ring unit body.
The upper section of the left runner and the upper section of the right runner are separated by a middle plug, and the lower sections of the left runner and the right runner are communicated with the lower section of the middle runner to form a U-shaped runner (the U-shaped runner is a blind structure with a U-shaped trend). The upper section of the left runner and the upper section of the right runner are communicated with the transverse channel section at the top of the copper pressure ring unit body. The bottoms of the U-shaped channel sections are positioned at the bottom of the copper pressure ring unit body, so that a cooling channel which reciprocates up and down and transversely extends is formed in the copper pressure ring unit body, and a good cooling effect can be achieved on the bottom of the copper pressure ring; greatly prolongs the service life of the copper pressure ring. Because the bottom of the copper pressure ring unit body is not required to be provided with the transverse channel section, the water through groove and the welded water through groove cover plate, the welding seam of the water through groove cover plate at the bottom of the copper pressure ring unit body is omitted, the phenomenon that the welding seam is directly exposed in a high-temperature environment to corrode, crack and leak water is avoided, the service life of the copper pressure ring is prolonged, and the production loss caused by hot shutdown is reduced.
The limiting step serves as the boundary between the upper section and the lower section of the middle runner, and the middle plug plays a role in limiting and supporting. In the processing process, after the middle plug is inserted, when the lower end of the middle plug contacts the limiting step, the middle plug is inserted in place. In the use process of the copper pressure ring, the middle plug cannot continuously descend due to the limiting and supporting effects of the limiting step.
In the preferred scheme of the invention, in the U-shaped channel section, the upper end of the left runner and the upper end of the right runner respectively form two ends of the U-shaped channel section; the transverse channel section is divided into a plurality of transverse channel small sections which are sequentially arranged from left to right; one end of the leftmost U-shaped channel section is communicated with the leftmost transverse channel section, the other end of the leftmost U-shaped channel section is communicated with the water inlet or the water outlet, and one end of the rightmost U-shaped channel section is communicated with the rightmost transverse channel section, and the other end of the rightmost U-shaped channel section is communicated with the water outlet or the water inlet; two ends of each U-shaped channel section in the middle are respectively communicated with two small transverse channel sections adjacent to each other. The transverse channel segments are typically separated into a plurality of transverse channel segments by providing plugs, with the upper end of the middle plug of each U-shaped channel segment being available for separation of the transverse channel segments.
As a further preferable mode of the invention, in each of the U-shaped channel sections in the middle, a first end plug is arranged at the upper end of the middle plug, the first end plug is welded at the top of the copper pressure ring unit body, and the upper end face of the middle plug is in close contact with the lower end face of the first end plug. The opening above the middle plugging head is sealed by the first end plug, so that water flowing between the upper end of the left runner and the upper end of the right runner can be effectively prevented.
As a further preferable scheme of the invention, a second end plug is arranged at the joint of the leftmost U-shaped channel section and the transverse channel section, a second switching flow passage is arranged in the second end plug, the second switching flow passage communicates the leftmost transverse channel section with one end of the leftmost U-shaped channel section, and the second end plug cuts off the leftmost transverse channel section from the other end of the leftmost U-shaped channel section; the connection part of the U-shaped channel section at the rightmost end and the transverse channel section is provided with a third end plug, a third switching runner is arranged in the third end plug, the third switching runner is used for communicating the rightmost transverse channel section with one end of the rightmost U-shaped channel section, and the third end plug is used for separating the rightmost transverse channel section from the other end of the rightmost U-shaped channel section. The plug with the transfer flow passage is used for realizing the conversion of the cooling passage from the longitudinal direction to the transverse direction, and is used as an intermediate connecting piece for connecting the U-shaped passage section with the transverse passage section to form a required cooling passage, so that cooling fluid passes according to the flow direction required by design.
As a further preferable mode of the invention, the joint of the left runner and the middle runner is provided with a first thorn-shaped block, and the joint of the middle runner and the right runner is provided with a second thorn-shaped block. The first thorn-shaped block and the second thorn-shaped block are removed through a machining mode, the opening between the left runner and the middle runner and the opening between the middle runner and the right runner are ground, the top of the U-shaped channel section is smooth, and the U-shaped channel section is beneficial to being in close contact with the lower end face of the first end plug.
As a preferable scheme of the invention, the left runner, the middle runner and the right runner in the U-shaped channel section are all round holes extending longitudinally; on the section of the U-shaped channel section, the circle where the left runner is located intersects with the circle where the middle runner is located, and the circle where the middle runner is located intersects with the circle where the right runner is located. Thus, the round holes of the left runner, the middle runner and the right runner which are mutually communicated form a composite hole, the composite hole is formed by drilling or other machining modes, and the circle center distance between two adjacent round holes is smaller than the sum of the radiuses of the two round holes. Typically, the circular holes in the composite holes are parallel to each other.
The copper pressure ring unit body is made of copper or copper alloy.
The invention also provides a processing method of the copper pressure ring of the submerged arc furnace, which is characterized by comprising the following steps:
(1) Forging and pressing the whole copper plate into a copper pressure ring unit body;
(2) Drilling holes from left to right or from right to left on the top of the copper pressure ring unit body to obtain transverse holes extending along the transverse direction, wherein the transverse holes are provided with openings on the side surfaces of the copper pressure ring unit body;
(3) Drilling holes from top to bottom on the copper pressure ring unit body to obtain a plurality of middle longitudinal holes extending along the longitudinal direction, wherein each middle longitudinal hole is communicated with the transverse hole, and each middle longitudinal hole is provided with an opening on the top surface of the copper pressure ring unit body;
(4) The aperture of the upper section of each middle longitudinal hole is enlarged in a reaming mode, and a limiting step is formed in the middle longitudinal hole;
(5) Inserting a cylindrical bar into the upper section of each middle longitudinal hole, wherein the outer surface of the cylindrical bar is tightly contacted with the inner side wall of the upper section of each middle longitudinal hole, and the lower end of the cylindrical bar is contacted with a limiting step;
(6) Drilling holes from top to bottom on the left side and the right side of each middle longitudinal hole to obtain a plurality of left longitudinal holes and a plurality of right longitudinal holes which extend longitudinally, wherein each left longitudinal hole and each right longitudinal hole are provided with openings on the top surface of the copper pressure ring unit body, each left longitudinal hole and each right longitudinal hole are communicated with the transverse holes, and the lower sections of the left longitudinal holes and the lower sections of the right longitudinal holes are communicated with the lower sections of the corresponding middle longitudinal holes; the materials on the left side and the right side of the cylindrical bar are removed when the left longitudinal hole and the right longitudinal hole are drilled, so that a middle plug is formed;
(7) Bending the copper pressure ring unit body to bend the copper pressure ring unit body into an arc shape, and bending the transverse holes into an arc shape to form a transverse channel section;
(8) Installing each end plug and welding the end plugs on the copper pressure ring unit body, and sealing the openings of the transverse holes, the openings of each middle longitudinal hole, the openings of each left longitudinal hole and the openings of each right longitudinal hole; the part of the middle longitudinal hole corresponding to the middle plug forms the upper section of the middle runner, the part of the middle longitudinal hole below the limiting step forms the lower section of the middle runner, the part of the left longitudinal hole below the transverse channel section forms the left runner, and the part of the right longitudinal hole below the transverse channel section forms the right runner, so that the copper pressure ring unit is obtained;
(9) And sequentially splicing the copper pressure ring units into a ring shape to obtain the copper pressure ring of the submerged arc furnace.
Typically, the lower end of the left longitudinal hole, the lower end of the right longitudinal hole and the lower end of the middle longitudinal hole are positioned at the same height.
Typically, the upper section of each intermediate longitudinal bore has a larger bore diameter than the transverse bore.
Generally, the cylindrical bar is made of copper or a copper alloy.
In the step (8), the left runner, the lower section of the middle runner and the right runner are sequentially communicated from left to right to form a U-shaped channel section.
In the step (8), the first spike block is located between the opening of each left longitudinal hole and the opening of each middle longitudinal hole, the second spike block is located between the opening of each middle longitudinal hole and the opening of each right longitudinal hole, and the first spike block and the second spike block are ground by removing materials in a machining mode. In this way, the openings of the left longitudinal holes and the openings of the middle longitudinal holes and the openings of the right longitudinal holes are flattened, so that the top of the U-shaped channel section is smooth and is beneficial to being in close contact with the lower end face of the first end plug.
Compared with the prior art, the invention has the following advantages:
the copper pressure ring of the submerged arc furnace adopts the middle plug to separate the upper section of the left runner from the upper section of the right runner, the lower section of the left runner and the lower section of the right runner are mutually communicated with the lower section of the middle runner to form U-shaped channel sections, the bottoms of the U-shaped channel sections are positioned at the bottoms of the copper pressure ring unit bodies, so that a cooling channel which reciprocates up and down and transversely extends is formed in the copper pressure ring unit bodies, and a good cooling effect can be achieved on the bottoms of the copper pressure rings; greatly prolongs the service life of the copper pressure ring. Because the bottom of the copper pressure ring unit body is not required to be provided with the transverse channel section, the water through groove and the welded water through groove cover plate, the welding seam of the water through groove cover plate at the bottom of the copper pressure ring unit body is omitted, the phenomenon that the welding seam is directly exposed in a high-temperature environment to corrode, crack and leak water is avoided, the service life of the copper pressure ring is prolonged, and the production loss caused by hot shutdown is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
FIG. 4 is a cross-sectional view of B-B of FIG. 1;
FIG. 5 is a cross-sectional view of C-C of FIG. 1;
FIG. 6 is a schematic view of the structure of FIG. 5 after removal of material by machining;
FIG. 7 is a schematic view of the second and third end caps of FIG. 1;
FIG. 8 is a schematic view of a copper pressure ring unit in the background of the invention;
FIG. 9 is a top view of FIG. 8;
fig. 10 is a view along direction D in fig. 9;
fig. 11 is a cross-sectional view of E-E of fig. 10.
Detailed Description
The invention is described in detail below with reference to the drawings and the specific embodiments.
As shown in fig. 1-7, the copper pressure ring of the submerged arc furnace in the embodiment comprises a plurality of copper pressure ring units, wherein each copper pressure ring unit comprises a copper pressure ring unit body 1, a cooling channel 2 is arranged in each copper pressure ring unit body 1, a water inlet 3 and a water outlet 4 are respectively arranged at two ends of each cooling channel 2, each cooling channel 2 comprises a transverse channel section 21 and four U-shaped channel sections 22, each transverse channel section 21 is positioned at the top of each copper pressure ring unit body 1, and each U-shaped channel section 22 is sequentially arranged on each copper pressure ring unit body 1 from left to right; the U-shaped channel section 22 comprises a left channel 221, a middle channel 222, a middle plug 223 and a right channel 224, wherein the left channel 221, the middle channel 222 and the right channel 224 extend longitudinally and are sequentially arranged from left to right, a limit step 225 is arranged in the middle channel 222, the middle plug 223 is positioned in the upper section of the middle channel 222, the outer surface of the middle plug 223 is tightly contacted with the inner side wall of the upper section of the middle channel 222, the lower end of the middle plug 223 is contacted with the limit step 225, and the lower section of the left channel 221 is communicated with the lower section of the right channel 224 through the lower section of the middle channel 222; the U-shaped channel sections 22 are connected by means of transverse channel sections 21.
Typically, the bottom of the U-shaped channel section 22 is at the bottom of the copper pressure ring unit body 1.
The upper section of the left runner 221 and the upper section of the right runner 224 are separated by a middle plug 223, and the lower section of the left runner 221 and the lower section of the right runner 224 are communicated with the lower section of the middle runner 222 to form a U-shaped runner (the U-shaped runner is a U-shaped blind structure). The upper sections of the left runner 221 and the right runner 224 are both communicated with the lateral channel section 21 at the top of the copper pressure ring unit body 1. The bottoms of the U-shaped channel sections 22 are positioned at the bottom of the copper pressure ring unit body 1, so that a cooling channel 2 which reciprocates up and down and transversely extends is formed in the copper pressure ring unit body 1, and a good cooling effect can be achieved on the bottom of the copper pressure ring; greatly prolongs the service life of the copper pressure ring. Because the bottom of the copper pressure ring unit body 1 is not required to be provided with the transverse channel section 21, the water through groove and the welded water through groove cover plate, the welding seam of the water through groove cover plate at the bottom of the copper pressure ring unit body 1 is omitted, the phenomenon that the welding seam is directly exposed in a high-temperature environment to corrode, pull, crack and leak water is avoided, the service life of the copper pressure ring is prolonged, and the production loss caused by hot shutdown is reduced.
The limiting step 225 serves as a boundary between the upper and lower sections of the middle flow passage 222, and serves as a limit and support for the middle plug 223. During the process, after the middle plug 223 is inserted, the middle plug 223 is inserted in place when the lower end of the middle plug 223 contacts the limiting step 225. During the use of the copper pressure ring, the middle plug 223 will not continue to descend due to the limiting and supporting effects of the limiting step 225.
In the U-shaped channel section 22, the upper ends of the left flow channel 221 and the right flow channel 224 respectively form two ends of the U-shaped channel section 22; the four U-shaped channel sections 22 are a U-shaped channel section 22a, a U-shaped channel section 22b, a U-shaped channel section 22c and a U-shaped channel section 22d in this order from left to right; the transverse channel section 21 is divided into five transverse channel sections 211 by arranging plugs, and the five transverse channel sections 211 are a transverse channel section 211a, a transverse channel section 211b, a transverse channel section 211c, a transverse channel section 211d and a transverse channel section 211e in sequence from left to right; the left runner 221 of the U-shaped channel section 22a is communicated with the transverse channel section 211a, the right runner 224 of the U-shaped channel section 22a is communicated with the water inlet 3, two ends of the transverse channel section 211b are respectively communicated with the left runner 221 of the U-shaped channel section 22a and the left runner 221 of the U-shaped channel section 22b, two ends of the transverse channel section 211c are respectively communicated with the right runner 224 of the U-shaped channel section 22b and the left runner 221 of the U-shaped channel section 22c, two ends of the transverse channel section 211d are respectively communicated with the right runner 224 of the U-shaped channel section 22c and the right runner 224 of the U-shaped channel section 22d, the right runner 221 of the U-shaped channel section 22d is communicated with the transverse channel section 211e, and the left runner 221 of the U-shaped channel section 22d is communicated with the water outlet 4. The upper end of the middle plug 223 of the middle U-shaped channel section 22b, the upper end of the middle plug 223 of the U-shaped channel section 22c can be used for the separation of the transverse channel sections 21.
In the middle U-shaped channel section 22b, 22c, the upper end of the middle plug 223 is provided with a first end plug 226, the first end plug 226 is welded on the top of the copper pressure ring unit body 1, and the upper end surface of the middle plug 223 is in close contact with the lower end surface of the first end plug 226. The opening above the middle plug 223 is sealed by the first end plug 226, so that the water flowing between the upper end of the left flow channel 221 and the upper end of the right flow channel 224 can be effectively prevented.
The connection part of the U-shaped channel section 22a and the transverse channel section 21 is provided with a second end plug 227, a second switching flow passage 2271 is arranged in the second end plug 227, the second switching flow passage 2271 communicates the transverse channel small section 211a with the left flow passage 221 of the U-shaped channel section 22a, and the second end plug 227 separates the transverse channel small section 211a from the right flow passage 224 of the U-shaped channel section 22 a; the connection between the U-shaped channel section 22d and the transverse channel section 21 is provided with a third end plug 228, a third switching flow passage 2281 is arranged in the third end plug 228, the third switching flow passage 2281 communicates the transverse channel small section 211e with the right flow passage 221 of the U-shaped channel section 22d, and the third end plug 228 cuts off the transverse channel small section 211e from the left flow passage 221 of the U-shaped channel section 22 d. The plug with the transfer flow passage is adopted to realize the conversion of the cooling passage 2 between the longitudinal direction and the transverse direction, and is used as an intermediate connecting piece to connect the U-shaped passage section 22 with the transverse passage section 21 to form the required cooling passage 2, so that cooling fluid passes according to the flow direction required by design.
The junction of the left runner 221 and the middle runner 222 is provided with a first thorn-shaped block 23, and the junction of the middle runner 222 and the right runner 224 is provided with a second thorn-shaped block 24. The first thorn-shaped block 23 and the second thorn-shaped block 24 are ground by removing materials in a machining mode, and the openings between the left runner 221 and the middle runner 222 and the openings between the middle runner 222 and the right runner 224 are ground, so that the top of the U-shaped channel section 22 is smooth, and the U-shaped channel section is beneficial to being in close contact with the lower end face of the first end plug 226.
The left runner 221, the middle runner 222 and the right runner 224 in the U-shaped channel section 22 are all round holes extending longitudinally; in the cross section of the U-shaped channel section 22, the circle in which the left flow channel 221 is located intersects the circle in which the middle flow channel 222 is located, and the circle in which the middle flow channel 222 is located intersects the circle in which the right flow channel 224 is located. Thus, the circular holes communicated with each other in the left flow channel 221, the middle flow channel 222 and the right flow channel 224 form a composite hole, the composite hole is formed by drilling or other machining modes, and the center distance between two adjacent circular holes is smaller than the sum of the radiuses of the two circular holes. Typically, the circular holes in the composite holes are parallel to each other.
The copper pressure ring unit body 1 is made of copper or copper alloy.
The processing method of the copper pressure ring of the submerged arc furnace comprises the following steps:
(1) Forging and pressing the whole copper plate into a copper pressure ring unit body 1;
(2) Drilling holes from left to right or from right to left on the top of the copper pressure ring unit body 1 to obtain transverse holes 11 extending in the transverse direction, wherein the transverse holes 11 are provided with openings on the side surfaces of the copper pressure ring unit body 1;
(3) Drilling holes from top to bottom on the copper pressure ring unit body 1 to obtain a plurality of middle longitudinal holes 12 extending along the longitudinal direction, wherein each middle longitudinal hole 12 is communicated with the transverse hole 11, and each middle longitudinal hole 12 is provided with an opening on the top surface of the copper pressure ring unit body 1;
(4) The hole diameter of the upper section of each middle longitudinal hole 12 is increased by adopting a reaming mode, and a limit step 225 is formed in the middle longitudinal hole 12;
(5) Inserting a cylindrical bar into the upper section of each middle longitudinal hole 12, wherein the outer surface of the cylindrical bar is tightly contacted with the inner side wall of the upper section of the middle longitudinal hole 12, and the lower end of the cylindrical bar is contacted with a limit step 225;
(6) Drilling holes from top to bottom on the left side and the right side of each middle longitudinal hole 12 to obtain a plurality of left longitudinal holes 13 and a plurality of right longitudinal holes 14 which extend along the longitudinal direction, wherein each left longitudinal hole 13 and each right longitudinal hole 14 are provided with openings on the top surface of the copper pressure ring unit body 1, each left longitudinal hole 13 and each right longitudinal hole 14 are communicated with the transverse holes 11, and the lower sections of the left longitudinal holes 13 and the lower sections of the right longitudinal holes 14 are communicated with the lower sections of the corresponding middle longitudinal holes 12; the left and right sides of the cylindrical bar are removed when the left and right longitudinal holes 13 and 14 are drilled, forming a middle plug 223;
(7) Bending the copper pressure ring unit body 1 to bend the copper pressure ring unit body 1 into an arc shape, and bending the transverse holes 11 into an arc shape to form a transverse channel section 21;
(8) Installing and welding the end plugs on the copper pressure ring unit body 1, and sealing the openings of the transverse holes 11, the openings of the middle longitudinal holes 12, the openings of the left longitudinal holes 13 and the openings of the right longitudinal holes 14; the part of the middle longitudinal hole 12 corresponding to the middle plug 223 forms the upper section of the middle runner 222, the part of the middle longitudinal hole 12 below the limiting step 225 forms the lower section of the middle runner 222, the part of the left longitudinal hole 13 below the transverse channel section 21 forms the left runner 221, and the part of the right longitudinal hole 14 below the transverse channel section 21 forms the right runner 224, so as to obtain a copper pressure ring unit;
(9) And sequentially splicing the copper pressure ring units into a ring shape to obtain the copper pressure ring of the submerged arc furnace.
Typically, the lower ends of the left and right longitudinal bores 13, 14 and 12 are at the same height.
Typically, the upper section of each intermediate longitudinal bore 12 has a larger bore diameter than the transverse bore 11.
Generally, the cylindrical bar is made of copper or copper alloy.
In the step (8), the left runner 221, the lower section of the middle runner 222, and the right runner 224 are sequentially communicated from left to right to form a U-shaped channel section 22.
In step (8), the first spike block 23 is located between the opening of each left longitudinal hole 13 and the opening of each middle longitudinal hole 12, the second spike block 24 is located between the opening of each middle longitudinal hole 12 and the opening of each right longitudinal hole 14, and the first spike block 23 and the second spike block 24 are ground by removing material by mechanical processing. In this way, the openings of the left and right longitudinal bores 13, 12 and the openings of the right and left longitudinal bores 14, 12 are flattened so that the top of the U-shaped channel section 22 is smooth, facilitating intimate contact with the lower end face of the first end plug 226.
In addition, it should be noted that, in the specific embodiments described in the present specification, names of various parts and the like may be different, and all equivalent or simple changes of the structures, features and principles described in the conception of the present invention are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The utility model provides a submerged arc furnace copper pressure ring, includes a plurality of copper pressure ring units, and copper pressure ring unit includes copper pressure ring unit body, is equipped with cooling channel in the copper pressure ring unit body, and cooling channel both ends are equipped with water inlet and delivery port, characterized by respectively: the cooling channel comprises a transverse channel section and a plurality of U-shaped channel sections, the transverse channel section is positioned at the top of the copper pressure ring unit body, and the U-shaped channel sections are sequentially arranged on the copper pressure ring unit body from left to right; the U-shaped channel section comprises a left channel, a middle plug and a right channel, wherein the left channel, the middle channel and the right channel extend longitudinally and are sequentially arranged from left to right, a limiting step is arranged in the middle channel, the middle plug is arranged in the upper section of the middle channel, the outer surface of the middle plug is tightly contacted with the inner side wall of the upper section of the middle channel, the lower end of the middle plug is contacted with the limiting step, and the lower section of the left channel is communicated with the lower section of the right channel through the lower section of the middle channel; each U-shaped channel section is communicated through a transverse channel section;
a second end plug is arranged at the joint of the leftmost U-shaped channel section and the transverse channel section, a second switching flow passage is arranged in the second end plug, the second switching flow passage is used for communicating the leftmost transverse channel section with one end of the leftmost U-shaped channel section, and the second end plug is used for isolating the leftmost transverse channel section from the other end of the leftmost U-shaped channel section; a third end plug is arranged at the joint of the rightmost U-shaped channel section and the transverse channel section, a third switching flow passage is arranged in the third end plug, the third switching flow passage is used for communicating the rightmost transverse channel section with one end of the rightmost U-shaped channel section, and the third end plug is used for separating the rightmost transverse channel section from the other end of the rightmost U-shaped channel section;
the left runner, the middle runner and the right runner in the U-shaped channel section are all round holes extending longitudinally; on the section of the U-shaped channel section, the circle where the left runner is located intersects with the circle where the middle runner is located, and the circle where the middle runner is located intersects with the circle where the right runner is located.
2. The submerged arc furnace copper pressure ring of claim 1, wherein: in the U-shaped channel section, the upper ends of the left runner and the right runner respectively form two ends of the U-shaped channel section; the transverse channel section is divided into a plurality of transverse channel small sections which are sequentially arranged from left to right; one end of the leftmost U-shaped channel section is communicated with the leftmost transverse channel section, the other end of the leftmost U-shaped channel section is communicated with the water inlet or the water outlet, and one end of the rightmost U-shaped channel section is communicated with the rightmost transverse channel section, and the other end of the rightmost U-shaped channel section is communicated with the water outlet or the water inlet; two ends of each U-shaped channel section in the middle are respectively communicated with two small transverse channel sections adjacent to each other.
3. The submerged arc furnace copper pressure ring of claim 2, wherein: in each U-shaped channel section in the middle, the upper end of the middle plug is provided with a first end plug, the first end plug is welded at the top of the copper pressure ring unit body, and the upper end face of the middle plug is in close contact with the lower end face of the first end plug.
4. The submerged arc furnace copper pressure ring of claim 1, wherein: the junction of left runner with the intermediate runner has first thorn form piece, intermediate runner with the junction of right runner has the second thorn form piece.
5. The processing method of the copper pressure ring of the submerged arc furnace is characterized by comprising the following steps of:
(1) Forging and pressing the whole copper plate into a copper pressure ring unit body;
(2) Drilling holes from left to right or from right to left on the top of the copper pressure ring unit body to obtain transverse holes extending along the transverse direction, wherein the transverse holes are provided with openings on the side surfaces of the copper pressure ring unit body;
(3) Drilling holes from top to bottom on the copper pressure ring unit body to obtain a plurality of middle longitudinal holes extending along the longitudinal direction, wherein each middle longitudinal hole is communicated with the transverse hole, and each middle longitudinal hole is provided with an opening on the top surface of the copper pressure ring unit body;
(4) The aperture of the upper section of each middle longitudinal hole is enlarged in a reaming mode, and a limiting step is formed in the middle longitudinal hole;
(5) Inserting a cylindrical bar into the upper section of each middle longitudinal hole, wherein the outer surface of the cylindrical bar is tightly contacted with the inner side wall of the upper section of each middle longitudinal hole, and the lower end of the cylindrical bar is contacted with a limiting step;
(6) Drilling holes from top to bottom on the left side and the right side of each middle longitudinal hole to obtain a plurality of left longitudinal holes and a plurality of right longitudinal holes which extend longitudinally, wherein each left longitudinal hole and each right longitudinal hole are provided with openings on the top surface of the copper pressure ring unit body, each left longitudinal hole and each right longitudinal hole are communicated with the transverse holes, and the lower sections of the left longitudinal holes and the lower sections of the right longitudinal holes are communicated with the lower sections of the corresponding middle longitudinal holes; the materials on the left side and the right side of the cylindrical bar are removed when the left longitudinal hole and the right longitudinal hole are drilled, so that a middle plug is formed;
(7) Bending the copper pressure ring unit body to bend the copper pressure ring unit body into an arc shape, and bending the transverse holes into an arc shape to form a transverse channel section;
(8) Installing each end plug and welding the end plugs on the copper pressure ring unit body, and sealing the openings of the transverse holes, the openings of each middle longitudinal hole, the openings of each left longitudinal hole and the openings of each right longitudinal hole; the part of the middle longitudinal hole corresponding to the middle plug forms the upper section of the middle runner, the part of the middle longitudinal hole below the limiting step forms the lower section of the middle runner, the part of the left longitudinal hole below the transverse channel section forms the left runner, and the part of the right longitudinal hole below the transverse channel section forms the right runner, so that the copper pressure ring unit is obtained;
(9) And sequentially splicing the copper pressure ring units into a ring shape to obtain the copper pressure ring of the submerged arc furnace.
6. The method for processing the copper pressure ring of the submerged arc furnace according to claim 5, which is characterized in that: in the step (8), the first thorn-shaped block is positioned between the opening of each left longitudinal hole and the opening of each middle longitudinal hole, the second thorn-shaped block is positioned between the opening of each middle longitudinal hole and the opening of each right longitudinal hole, and the first thorn-shaped block and the second thorn-shaped block are ground by adopting a mechanical processing mode to remove materials.
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| CN201810807015.7A CN108834248B (en) | 2018-07-21 | 2018-07-21 | Copper pressure ring of submerged arc furnace and processing method thereof |
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| CN201810807015.7A CN108834248B (en) | 2018-07-21 | 2018-07-21 | Copper pressure ring of submerged arc furnace and processing method thereof |
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| MY157721A (en) * | 2010-11-30 | 2016-07-15 | Midrex Technologies Inc | Electric furnace for producing molten metal having material recycling capability |
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| WO2005071335A3 (en) * | 2004-01-19 | 2006-02-23 | Jacques Venter | Arc furnace pressure ring assembly |
| CN101873733A (en) * | 2010-02-05 | 2010-10-27 | 姚会元 | Conductive copper jaw plate for mine heat furnace and manufacture method thereof |
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| CN108834248A (en) | 2018-11-16 |
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