CN212158108U - Solid solution electric heating device - Google Patents
Solid solution electric heating device Download PDFInfo
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- CN212158108U CN212158108U CN202020257344.1U CN202020257344U CN212158108U CN 212158108 U CN212158108 U CN 212158108U CN 202020257344 U CN202020257344 U CN 202020257344U CN 212158108 U CN212158108 U CN 212158108U
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Abstract
The utility model relates to a solid solution electric heating device, which comprises an upper muffle and a lower muffle which are mutually matched, and the upper muffle and the lower muffle are matched to form a furnace body with an upper split structure and a lower split structure; a plurality of groups of electric heating wires are arranged between the front inner wall surface and the rear inner wall surface of the furnace body together, and ceramic tubes are sleeved on the single group of electric heating wires; a thermocouple is arranged on the front wall surface of the lower muffle, a probe of the thermocouple extends into the furnace body, and the thermocouple is connected to the temperature control cabinet through a lead; the temperature control cabinet is provided with a recorder which is electrically connected with the thermocouple and the temperature control cabinet; a furnace lining is arranged on the inner wall surface of the furnace body to form a heat insulation layer; the elbow is placed in the hearth through a furnace gap, the interior of the furnace body is heated and insulated by the electric heating wire, heat is transferred to a workpiece through thermal radiation and thermal convection, and the temperature in the furnace body is detected and controlled by the thermocouple and is transferred to the temperature control cabinet in real time, so that the solution treatment of the elbow is realized, and the forming quality of the elbow is effectively improved; the utility model discloses a solid solution electric heating device simple structure is compact reasonable, and the practicality is strong.
Description
Technical Field
The utility model belongs to the technical field of the equipment for heat treatment technique and specifically relates to a dissolve electric heater unit.
Background
The boiler heating surface pipe fitting occupies the largest proportion in the pressurized element of the boiler, has the largest metal consumption and the widest distribution, and plays the roles of heating a medium and generating steam. The heating surface pipe fittings are generally divided into a radiation heating surface pipe fitting and a convection heating surface pipe fitting according to different heating modes. The radiation heating surface pipe fittings are divided into a radiation evaporator, a radiation superheater and a radiation reheater; and the convection heating surface pipe fittings are divided into a convection superheater, a convection reheater and the like. Wherein the radiation evaporator is a hearth water-cooled wall or a membrane water-cooled wall; the radiation superheater, radiation reheater, convection superheater, and convection reheater are collectively referred to as serpentine tube elements.
The superheater and the reheater are coil tube panels which are formed by sheathing a plurality of small-diameter tubes with the same or different specifications and materials and the expansion length of more than 20m through repeated bending and a plurality of accessories with the connecting and fixing functions and a plurality of tubes, and are positioned at the upper part of a hearth and in a flue. In a special equipment boiler, a considerable part of the heating surface tubes are stainless steel tubes, which are bent to form bends. Since the bending of the tube will generate specific bending deformation and bending stress, which will seriously affect the subsequent use of the tube on the heating surface of the boiler, the bend of the tube must be treated by solution treatment to improve the forming quality.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects in the prior art and provides a solid solution electric heating device with a reasonable structure, so that the solid solution treatment of the elbow is realized, the forming quality of the elbow is effectively improved, the use is convenient, and the practicability is high.
The utility model discloses the technical scheme who adopts as follows:
a solid solution electric heating device comprises an upper muffle and a lower muffle which are mutually matched, wherein the upper muffle and the lower muffle are matched to form a furnace body with an up-and-down split structure; a plurality of groups of electric heating wires are arranged between the front inner wall surface and the rear inner wall surface of the furnace body together, and ceramic tubes are sleeved on the single group of electric heating wires; a thermocouple is arranged on the front wall surface of the lower muffle, a probe of the thermocouple extends into the furnace body, and the thermocouple is connected to the temperature control cabinet through a lead; the temperature control cabinet is provided with a recorder which is electrically connected with the thermocouple and the temperature control cabinet; and a furnace lining is arranged on the inner wall surface of the furnace body to form a heat insulation layer.
As a further improvement of the above technical solution:
a strip-shaped groove is formed in the side wall of the lower muffle at the joint with the upper muffle, and the groove penetrates through the side wall of the lower muffle inside and outside; when the upper muffle and the lower muffle are closed, the groove forms a furnace seam of a furnace body upper structure.
A through groove for pouring out oxide skin is formed below the side wall of the lower muffle; and a blocking plate is arranged on the outer side wall of the lower muffle at the groove opening of the through groove, and the size of the blocking plate is larger than that of the groove opening of the through groove.
The ceramic tube is sleeved at the end part of the electric heating wire; the ceramic tube is made of high-temperature alumina ceramic.
The furnace lining is a zirconium-containing all-fiber aluminum silicate blanket with the thickness of 150 mm.
The electric heating wire is an iron-chromium-aluminum high-resistance electric heating wire with a spiral structure.
The electric heating wires are arranged into an upper layer and a lower layer in the furnace body, the upper layer of electric heating wire is fixedly arranged between the front inner wall surface and the rear inner wall surface of the upper muffle, and the lower layer of electric heating wire is fixedly arranged between the front inner wall surface and the rear inner wall surface of the lower muffle.
The furnace hearth of the furnace body has the size of L2100mm multiplied by W1200mm multiplied by H450 mm; an insulating layer is arranged in the hearth, and the effective size of the hearth is L1900mm multiplied by W1000mm multiplied by H150 mm.
The power of the single group of heating wires is 20kw, and the number of the heating wires is six.
The utility model has the advantages as follows:
the utility model has the advantages of compact and reasonable structure, convenient operation places the elbow in furnace through the stove seam, heats up and keeps warm to furnace body inside by the heater wire, and the heat is through heat radiation and heat convection transmission to work piece, detects and control and transmits to the temperature control cabinet in real time by the thermocouple to the temperature in the furnace body to the realization is to the solution treatment of stainless steel elbow, effectively improves its shaping quality, convenient to use, and the practicality is strong.
The utility model discloses still include following advantage:
the elbow can be placed into the hearth through the groove, the straight pipe part of the elbow is exposed outside the hearth, the upper muffle can be lifted through external hoisting equipment to be separated from the lower muffle, the elbow is integrally placed into the hearth, and the upper muffle is placed down and matched with the lower muffle;
the furnace lining in the form of the zirconium-containing all-fiber aluminum silicate blanket has excellent heat insulation and heat preservation performance, and under the condition of rapid temperature rise and heat preservation in the furnace body, the all-fiber aluminum silicate blanket is not easy to fall off and can be stably attached to the inner wall surface of the furnace body;
the thermocouple also assists in temperature control while detecting the temperature in the furnace body.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of fig. 1.
Wherein: 1. a lower muffle; 2. an upper muffle; 3. a thermocouple; 4. a wire; 5. a recorder; 6. a temperature control cabinet; 7. an electric heating wire; 8. a ceramic tube; 11. and (4) a groove.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and fig. 2, the solid solution electric heating device of the present embodiment includes an upper muffle 2 and a lower muffle 1 which are engaged with each other, and the upper muffle 2 and the lower muffle 1 are engaged with each other to form a furnace body with an up-and-down split structure; a plurality of groups of electric heating wires 7 are arranged between the front inner wall surface and the rear inner wall surface of the furnace body together, and ceramic tubes 8 are sleeved on the single group of electric heating wires 7; a thermocouple 3 is arranged on the front wall surface of the lower muffle 1, a probe of the thermocouple 3 extends into the furnace body, the thermocouple 3 is connected to a temperature control cabinet 6 through a lead 4, and the thermocouple 3 also assists in temperature control while detecting the temperature in the furnace body; the temperature control cabinet 6 is provided with a recorder 5, and the recorder 5 is electrically connected with the thermocouple 3 and the temperature control cabinet 6; the inner wall of the furnace body is provided with a furnace lining to form a heat-insulating layer.
A strip-shaped groove 11 is formed in the side wall of the lower muffle 1 at the joint of the upper muffle 2, and the groove 11 penetrates through the side wall of the lower muffle 1 from inside to outside; when the upper muffle 2 and the lower muffle 1 are closed, the groove 11 forms a furnace seam of an upper structure of the furnace body, the length of the furnace seam is 1900mm, and the height of the furnace seam is 150 mm.
A through groove for pouring out oxide skin is formed below the side wall of the lower muffle 1; and a blocking plate is arranged on the outer side wall of the lower muffle 1 at the position of the through groove opening, and the size of the blocking plate is larger than that of the through groove opening.
The ceramic tube 8 is sleeved at the end part of the electric heating wire 7; the ceramic tube 8 is made of high-temperature alumina ceramic, and the ceramic tube 8 is used as an insulating fixing body.
The furnace lining is a zirconium-containing all-fiber aluminum silicate blanket with the thickness of 150 mm; the furnace lining in the form of the zirconium-containing all-fiber aluminum silicate blanket has excellent heat insulation and heat preservation performance, and under the condition of rapid temperature rise and heat preservation in the furnace body, the all-fiber aluminum silicate blanket is not easy to fall off and can be stably attached to the inner wall surface of the furnace body.
The electric heating wire 7 is a spiral-structured iron-chromium-aluminum high-resistance electric heating wire.
The electric heating wires 7 are arranged in an upper layer and a lower layer in the furnace body, the upper layer electric heating wire 7 is fixedly arranged between the front inner wall surface and the rear inner wall surface of the upper muffle 2, and the lower layer electric heating wire 7 is fixedly arranged between the front inner wall surface and the rear inner wall surface of the lower muffle 1.
The furnace hearth size of the furnace body is L2100mm XW 1200mm XH 450 mm; an insulating layer is arranged in the hearth, and the effective size of the hearth is L1900mm multiplied by W1000mm multiplied by H150 mm.
The power of the heating wires 7 in a single group is 20kw, and the number of the heating wires 7 is six.
The rated working temperature of the solid solution electric heating device is 1200 ℃, the process common temperature is below 1100 ℃, the heat treatment temperature rise rate is less than or equal to 200 ℃/h, and the solid solution temperature rise rate is less than or equal to 800 ℃/h.
The utility model discloses a use method does:
the elbow is placed in the hearth through the furnace gap, the heating wire 7 heats the interior of the furnace body and keeps the temperature, heat is transferred to a workpiece through thermal radiation and thermal convection, the thermocouple 3 detects and controls the temperature in the furnace body and transfers the temperature to the temperature control cabinet 6 in real time, and therefore solid solution treatment of the stainless steel elbow is achieved.
In the use, can put the elbow to the furnace in through recess 11, its straight tube part exposes outside the furnace, also can promote upper muffle 2 through outside hoisting equipment in order to break away from lower muffle 1, puts the elbow wholly to the furnace in, puts down upper muffle 2 again and cooperates with lower muffle 1.
The utility model is simple in operation convenient, realized the solution treatment to the stainless steel elbow, can effectively improve its shaping quality.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (9)
1. A solid solution electric heating apparatus characterized by: the furnace comprises an upper muffle (2) and a lower muffle (1) which are mutually matched, wherein the upper muffle (2) and the lower muffle (1) are matched to form a furnace body with an up-down split structure; a plurality of groups of electric heating wires (7) are arranged between the front inner wall surface and the rear inner wall surface of the furnace body together, and ceramic tubes (8) are sleeved on the single group of electric heating wires (7); a thermocouple (3) is installed on the front wall surface of the lower muffle (1), a probe of the thermocouple (3) extends into the furnace body, and the thermocouple (3) is connected to a temperature control cabinet (6) through a lead (4); the temperature control cabinet (6) is provided with a recorder (5), and the recorder (5) is electrically connected with the thermocouple (3) and the temperature control cabinet (6); and a furnace lining is arranged on the inner wall surface of the furnace body to form a heat insulation layer.
2. A solid solution electric heating apparatus as claimed in claim 1, wherein: a strip-shaped groove (11) is formed in the side wall of the lower muffle (1) at the joint of the lower muffle (2), and the groove (11) penetrates through the side wall of the lower muffle (1) from inside to outside; when the upper muffle (2) and the lower muffle (1) are closed, the groove (11) forms a furnace seam of a furnace body upper structure.
3. A solid solution electric heating apparatus as claimed in claim 1, wherein: a through groove for pouring out oxide scale is formed below the side wall of the lower muffle (1); and a blocking plate is arranged on the outer side wall of the lower muffle (1) at the position of the through groove opening, and the size of the blocking plate is larger than that of the through groove opening.
4. A solid solution electric heating apparatus as claimed in claim 1, wherein: the ceramic tube (8) is sleeved at the end part of the electric heating wire (7); the ceramic tube (8) is made of high-temperature alumina ceramic.
5. A solid solution electric heating apparatus as claimed in claim 1, wherein: the furnace lining is a zirconium-containing all-fiber aluminum silicate blanket with the thickness of 150 mm.
6. A solid solution electric heating apparatus as claimed in claim 1, wherein: the electric heating wire (7) is an iron-chromium-aluminum high-resistance electric heating wire with a spiral structure.
7. A solid solution electric heating apparatus as claimed in claim 1, wherein: the electric heating wires (7) are arranged into an upper layer and a lower layer in the furnace body, the upper layer electric heating wire (7) is fixedly arranged between the front inner wall surface and the rear inner wall surface of the upper muffle (2), and the lower layer electric heating wire (7) is fixedly arranged between the front inner wall surface and the rear inner wall surface of the lower muffle (1).
8. A solid solution electric heating apparatus as claimed in claim 1, wherein: the furnace hearth of the furnace body has the size of L2100mm multiplied by W1200mm multiplied by H450 mm; an insulating layer is arranged in the hearth, and the effective size of the hearth is L1900mm multiplied by W1000mm multiplied by H150 mm.
9. A solid solution electric heating apparatus as claimed in claim 1, wherein: the power of the single group of heating wires (7) is 20kw, and the number of the heating wires (7) is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020257344.1U CN212158108U (en) | 2020-03-04 | 2020-03-04 | Solid solution electric heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020257344.1U CN212158108U (en) | 2020-03-04 | 2020-03-04 | Solid solution electric heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212158108U true CN212158108U (en) | 2020-12-15 |
Family
ID=73712298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020257344.1U Active CN212158108U (en) | 2020-03-04 | 2020-03-04 | Solid solution electric heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212158108U (en) |
-
2020
- 2020-03-04 CN CN202020257344.1U patent/CN212158108U/en active Active
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