CN107249225A - A kind of electric secondary heater and its manufacture method - Google Patents
A kind of electric secondary heater and its manufacture method Download PDFInfo
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- CN107249225A CN107249225A CN201710674619.4A CN201710674619A CN107249225A CN 107249225 A CN107249225 A CN 107249225A CN 201710674619 A CN201710674619 A CN 201710674619A CN 107249225 A CN107249225 A CN 107249225A
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- Prior art keywords
- water cavity
- barrel
- ring
- shell
- transition connection
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- 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
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
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- 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
- H05B3/00—Ohmic-resistance heating
- H05B3/78—Heating arrangements specially adapted for immersion heating
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- Details Of Fluid Heaters (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention provides a kind of electric secondary heater and its manufacture method, the electric secondary heater includes the water cavity for water storage, extend into the water cavity and the heating tube heated to the water in it, the water cavity includes water cavity barrel, two water cavity transition connection rings and two water cavity end sockets, the two ends of the water cavity barrel are connected by water cavity transition connection ring with corresponding water cavity end socket respectively, the water cavity barrel is the staving of cylindrical hollow cavity, the water cavity transition connection ring is provided with first annular boss, the both sides of the first annular boss overlap ring and the overlap joint ring of water cavity second provided with water cavity first, the water cavity transition connection ring, water cavity barrel and water cavity end socket are concentric.Beneficial effects of the present invention ensure that end socket is concentric with barrel, and qualification rate is high, is separate between each part or part, is not restricted mutually in manufacturing process.
Description
Technical field
The present invention relates to plate shaping technical field, specifically a kind of electric secondary heater and its manufacture method.
Background technology
Water cavity component is typically formed by water cavity end socket with water cavity barrel by way of welding.Ideally, weld
After finishing, end socket is coaxial isometrical with barrel.But, due to measuring smaller and otherness, be not suitable for input it is high into
This automation equipment, so welding manner typically can only be to borrow simple frock, simple machine by skilled worker to carry out.Due to
The factors such as stabilization of equipment performance, material property, frock characteristic and artificial fluctuation of service influence, and make water cavity end socket and the straight body of water cavity
Bucket can not be perfect coaxial isometrical, and water cavity end socket can not coincide well with water cavity barrel junction so that weld seam exist rosin joint,
The defects such as dislocation, crack, one time solder yield is low, and welding efficiency is low, welding quality can not be met demand and makes product
Cost remains high.Simultaneously as tolerance when end socket is connected with barrel is difficult to control in allowed band, cause product
Size is in Measurement Allowance, so that the disqualification rate of product increases, the cost increase of product, and this dislocation weldering
The result connect can make container bearing capacity not enough, therefore fatigue life detection is difficult to reach requirement.
Meanwhile, in the manufacturing process of the electric secondary heater with shell, general method is first that water cavity establishment of component is good, then
Straight seam welding will be carried out outside barrel edge rolling rear enclosure in shell part to water cavity, then the end socket in shell part is passed through into boxing
Mode weld together with barrel, equally exist and be unable to shell barrel and the coaxial defect of correspondence end socket, and a lot
Production process above governs process below.
The content of the invention
The invention aims to the deficiency for solving above-mentioned technology, there is provided a kind of electric secondary heater and its manufacturer
Method, can make end socket coaxial with barrel, and qualification rate is high, is separate between each part or part, in manufacturing process mutually not
Restriction.
The technical scheme is that：
A kind of electric secondary heater, including water cavity for water storage, extend into the water cavity and the water in it is heated
Heating tube, the water cavity include water cavity barrel, at least two water cavity transition connection rings and at least two water cavity end sockets, it is described
The two ends of water cavity barrel are connected by water cavity transition connection ring with corresponding water cavity end socket respectively, and the water cavity barrel is cylinder
The staving of shape hollow cavity, the water cavity transition connection ring is provided with first annular boss, and the both sides of the first annular boss are set
There is water cavity first to overlap ring and the overlap joint ring of water cavity second, the water cavity transition connection ring, water cavity barrel and water cavity end socket are coaxial
The heart.
The two ends of the water cavity barrel overlap ring with corresponding water cavity second respectively and are connected by spot welding and pass through soldering
Sealed, the overlap joint of water cavity first ring is connected by spot welding with corresponding water cavity end socket and carried out by soldering close respectively
Envelope.
The angle that the corresponding water cavity end socket inboard, upright direction of the overlap joint of water cavity first ring is formed is α angles, institute
It is β angles, 0 ° of ＜ α angle ＜ to state the angle that the corresponding water cavity barrel inboard, upright direction of the overlap joint ring of water cavity second formed
180 ° and ≠ 90 °, described 0 ° of 180 ° of ＜ α angle ＜ in β angles and ≠ 90 °.
The α angles and β are all higher than 0 ° and less than 90 °, and the water cavity end socket and water cavity barrel ride over water cavity transition company
Connect the outside of ring.
The heating tube is located inside water cavity barrel and is connected by flange with the water cavity end socket of water cavity barrel one end,
The flange is provided with heating pore and fixing hole, and the end of the heating tube is connected and led to flange spot welding by heating pore
Sealed with brazing is crossed, the heating tube correspondence water cavity end socket center is provided with the through hole used cooperatively with heating tube on flange, institute
The end socket for stating through hole circumference is provided with the bolt hole used cooperatively with fixing hole, and the bolt head of the bolt is located at water cavity barrel
Internal and screw mandrel is located at outside water cavity barrel by bolt hole, and the bolt is connected simultaneously by bolt hole with water cavity end socket spot welding
By sealed with brazing, the flange is connected by fixing hole with bolt screw mandrel on corresponding end socket.
The water cavity barrel is provided with provided with three tube head holes, tube head hole circumference and protrudes from water cavity barrel outer surface
Round boss, tube head is provided with the round boss, the tube head is connected by tube head hole with water cavity barrel by spot welding
And pass through sealed with brazing.
The electric secondary heater also includes control chamber, and the control chamber includes control chamber barrel, outer seal and control chamber
Transition connection ring, described to control the staving that barrel is cylindrical hollow cavity, one end of the control chamber barrel passes through control
Chamber transition connection ring processed is connected with outer seal, and the control chamber transition connection ring is provided with the second annular boss, second annular
The both sides of boss overlap ring and the overlap joint ring of control chamber second, the overlap joint ring of control chamber first and outer seal provided with control chamber first
It is connected, the overlap joint of control chamber second ring is connected and by sealed with brazing with control chamber barrel one end by spot welding, the control
The chamber barrel other end processed is connected and by sealed with brazing with provided with the water cavity barrel outer surface spot welding of flange side.
The outside of the water cavity is provided with shell, and the shell includes shell barrel, shell transition connection ring, shell end socket
With shell end cap, the shell barrel is the staving of cylindrical hollow cavity, and the shell transition connection ring is provided with the 3rd ring
Shape boss, the both sides of the 3rd annular boss overlap ring and the overlap joint ring of shell second, the straight body of shell provided with shell first
One end and the corresponding shell second of bucket overlap ring and are connected by spot welding and by sealed with brazing, the overlap joint ring of shell first and
Shell end socket is connected by spot welding and by sealed with brazing, provided with insulation between the shell end socket, water cavity and shell barrel
Layer.
Described electric secondary heater manufacture method, comprises the following steps：
(1) making of water cavity transition connection ring
The coiled strip for taking width to be water cavity transition connection ring spreading width, is cut according to required length, by shape after cutting
Into obtained billot be welded into a ring, the ring passes through roller extrusion forming or forms water cavity transition connection ring；
(2) making of water cavity barrel：
1) materials in the tube are selected
Using the materials in the tube of live specification on the market, cut by required length, by the gained water cavity barrel after cutting
Otch carry out deburring processing, and in water cavity barrel respective tube head bore position boss forming, be then washes out tube head hole；
2) coiled strip is selected
A. the making of barrel transition connection strap
The coiled strip for taking width to be barrel transition connection strap spreading width, is cut according to required length, after cutting
The obtained billot formed is molded to form barrel transition connection strap by roller extrusion forming or by mould punching, described straight
Body bucket transition connection strap is provided with boss, and the both sides of the boss are connected to the first overlap edge and the second overlap edge；
B. water cavity barrel plate makes
The coiled strip for taking width to be water cavity barrel spreading width, is cut according to required length, by what is obtained after cutting
Plate carries out edge rolling by furling plate round machine；
C. spot welding
By the first overlap edge of barrel transition connection strap 114, the second overlap edge respectively with barrel plate after edge rolling
Both sides spot welding is connected；
D. the making in tube head hole
In water cavity barrel respective tube head bore position boss forming, tube head hole is then washes out；
(3) making of water cavity component
1) water cavity end socket, tube head, heating tube, flange, bolt and blind pipe are ready to；
2) tube head is fixed on tube head hole by spot welding, the bolt head of bolt is located inside water cavity barrel and screw mandrel
It is located at by bolt hole outside water cavity barrel, and bolt spot welding is fixed on to the bolt hole for the water cavity end socket that flange is used cooperatively
It is interior；
3) two ends of water cavity barrel pass through spot welding with the overlap joint ring of water cavity second of corresponding water cavity transition connection ring respectively
It is connected, the overlap joint of water cavity first ring of the water cavity transition connection ring is connected with corresponding water cavity end socket by spot welding respectively；
4) heating tube, blind pipe are connected with flange correspondence position spot welding；
(4) making of control chamber or shell
1) control chamber is used
A. repeat step (1) produces control chamber transition connection ring, and the control chamber transition connection ring is provided with the second annular
Boss, the both sides of second annular boss overlap ring and the overlap joint ring of control chamber second provided with control chamber first；
B. repeat step (2) produces control chamber barrel；
C. the overlap joint of control chamber second ring is connected with control chamber barrel one end by spot welding, the control chamber barrel
The other end is connected with provided with the water cavity barrel outer surface spot welding of flange side；
D. weld seam on water cavity and control chamber is coated into solder paste respectively, sealed by soldering oven；By flange and heating
Solder paste is coated in the side of pipe connecting place, flange and blind pipe connecting place close to water cavity barrel respectively, is sealed by soldering oven；
2) shell is used
A. repeat step (1) produces shell transition connection ring, and the shell transition connection ring is provided with the 3rd annular boss,
The both sides of 3rd annular boss overlap ring and the overlap joint ring of shell second provided with shell first；
B. repeat step (2) produces shell barrel；
C. shell end socket is produced by conventional method；
D. one end of the shell barrel is connected with the overlap joint ring of shell second by spot welding, and the shell first overlaps ring
It is connected with shell end socket by spot welding；
E. weld seam on water cavity and shell is coated into solder paste respectively, sealed by soldering oven；By flange and heating tube
Connecting place, flange and blind pipe connecting place coat solder paste respectively close to water cavity barrel side, are sealed by soldering oven；
(5) complete machine is assembled
Each part, spare and accessory parts are assembled by design requirement.
Described soldering was stove nickel-based brazing, first by furnace operation temperature stabilization at 1050 DEG C~1100 DEG C, then will
The water cavity for coating nickel-based brazing cream is placed in burner hearth, by 40-60min high-temp alloyings so as to commissure under the protection of nitrogen
Sealed.
The beneficial effects of the invention are as follows：Fix and use using transition connection ring spot welding during by end socket with barrel boxing
Soldering carries out sealing welding, can not only ensure that end socket is coaxial with barrel, and make that welding is more flexible, welding efficiency is higher,
Welding quality is more stable, welding effect is more attractive and welding cost is lower；It is mutual between each part or part of electric secondary heater
Independent, do not restricted mutually in manufacturing process, with short production cycle, efficiency of assembling is high, and production cost is low.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention is provided with control chamber；
Fig. 2 is the structural representation of water cavity of the present invention；
Fig. 3 is Fig. 2 A-A diagrammatic cross-sections；
Fig. 4 is the structural representation of water cavity barrel of the present invention；
Fig. 5 is the structural representation of water cavity component of the present invention；
Fig. 6 is the structural representation of water cavity transition connection ring of the present invention；
Fig. 7 is Fig. 6 A-A diagrammatic cross-sections；
Fig. 8 is that the present invention sets chlamydate structural representation.
Marked in figure：1. water cavity, 2. heating tubes, 3. flanges, 4. control chambers, 5. blind pipes, 6. shells, 7. heat-insulation layers, 8. go out
Water pipe, 11. water cavity barrels, 12. water cavity transition connection rings, 13. water cavity the first side seal heads, 14. water cavity the second side seal heads, 31.
Fixing hole, 32. reinforcements, 41. control chamber barrels, 42. control chambers cross connection ring, 43. outer seals, 44. temperature controllers,
45. support, 51. blind pipe holes, 61. shell barrels, 62. shell transition connection rings, 63. shell end sockets, 64. shell end caps, 65.
Gear bubble lid, 111. tube head holes, 112. round boss, 113. tube heads, 114. barrel transition connection straps, 121. water cavities first are overlapped
Ring, 122. first annular boss, 123. water cavities second overlap joint ring, 141. through holes, 142. bolts, 1141. water cavity transition connection straps
First overlap edge, 1142. strip boss, 1143. barrel transition the second overlap edges of connection strap.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, to help understanding present disclosure.
Embodiment 1
As shown in figs. 1-7, the electric secondary heater includes being used for the water cavity 1 of water storage, extends into the water cavity 1 and in it
The heating tube 2 that is heated of water, the water cavity 1 includes water cavity barrel 11, two water cavity transition connection rings 12, water cavities first
Side seal first 13 and the side seal of water cavity second first 14, the water cavity barrel 11 are the staving of cylindrical hollow cavity, the water cavity mistake
Connection ring 12 is crossed provided with first annular boss 122, the both sides of the first annular boss 122 overlap ring 121 provided with water cavity first
Ring 123 is overlapped with water cavity second, the two ends of the water cavity barrel 11 overlap the spot welding phase of ring 123 with corresponding water cavity second respectively
Sealed even and by soldering, the overlap joint of water cavity first ring 121 is connected with corresponding water cavity end socket 13 by spot welding respectively
And sealed by soldering, the water cavity transition connection ring 12, water cavity barrel 11, the side seal of water cavity first first 13 and water cavity
Two side seals first 14 are concentric.
The corresponding side seal of water cavity first first 13 of the overlap joint of water cavity first ring 12 and first 14 inner side of the side seal of water cavity second
The angle that vertical direction is formed is α angles, the corresponding inboard, upright of water cavity barrel 11 of the overlap joint of water cavity second ring 121
The angle that direction is formed is β angles, 180 ° of 0 ° of ＜ α angle ＜ and ≠ 90 °, 180 ° of 0 ° of ＜ β angle ＜ and ≠ 90 °.
The α angles and β are all higher than 0 ° and less than 90 °, the side seal of water cavity first first 13, the side seal of water cavity second first 14 and water
Chamber barrel 11 rides over the outside of water cavity transition connection ring 12.
It is preferred that, the α angles and the β angles are equal.
First 14 center of the side seal of water cavity second is provided with circular through hole 141, the water cavity flange envelope of the circumference of through hole 141
Bolt hole is laid with first 14, the bolt hole is provided with bolt 142, and the bolt head of the bolt 142 is located at the straight body of water cavity
The inside of the bucket 11 and screw mandrel of bolt 142 is located at outside water cavity barrel 11 by bolt hole, the bolt 142 by bolt hole with
First 14 spot welding is connected on the right side of correspondence water cavity and passes through sealed with brazing.
The side of the through hole 141 away from water cavity barrel 11 is provided with flange 3, and the flange 3 is provided with penetrating blind pipe
Hole, heating pore and fixing hole 31, the blind pipe hole are located at the center of flange 3, and the heating pore is uniformly located at blind pipe hole
Circumference, the end of the heating tube 2 is connected and by sealed with brazing, the one of the blind pipe 5 by heating pore with the spot welding of flange 3
End is connected and by sealed with brazing by blind pipe hole with the spot welding of flange 3, and the heating tube 2 and blind pipe 5 pass through the side seal of water cavity second
The through hole 141 at first 14 center is located inside water cavity barrel 11, the fixing hole 31 on the flange 3 and the spiral shell welded on bolt hole
Bolt 142 is used cooperatively, and the flange 3 is fixed on by nut on the screw mandrel of bolt 142, flange 3 and through hole 141 circumference
Flange seal ring is provided between the side seal of water cavity second first 14.
The end surface of the flange 3 away from water cavity barrel 11 is provided with arc reinforcement 32.
Flange is run through in the blind pipe hole 51 that the blind pipe 5 is located in inside water cavity barrel 11 end-enclosed, the blind pipe 5
3 communicate with control chamber 4, are provided with temperature sensor in the blind pipe 5, and the temperature sensor passes through the end that is connected with flange 3
It is located at remote in blind pipe 5, for measuring temperature in water cavity 1.
The electric secondary heater also includes temperature controller 44 and temperature limiter, and the temperature controller 44 is located at control chamber 4
Interior, the temperature controller 44 is connected by support 45 with flange 3, and the temperature limiter input is electrically connected with city, described spacing
Device output end is connected with the input of temperature controller 44, and the output end of the temperature controller 44 is connected with heating tube 2, described
The signal end of temperature sensor is connected with the signal end of temperature controller 44.
With temperature controller 44 after the preferential 3 groups of U-shaped heating tubes of use of the heater 3,3 groups of U-shaped heating tube concatenations
Output end be connected.
The water cavity barrel 11 is provided with provided with three tube head holes 111, the circumference of tube head hole 111 and protrudes from the straight body of water cavity
Tube head 113 is provided with the round boss 112 of 11 outer surfaces of bucket, the round boss 112, the tube head 113 passes through tube head hole 111
It is connected with water cavity barrel 11 by spot welding and by sealed with brazing.
Three tube head holes 111 of the water cavity barrel 11 pass through tube head and inlet pipeline, outlet pipeline and blowdown respectively
Valve is connected, and tube head is provided with safety valve by threeway where the blowoff valve.
One end that the outlet pipe tube head is located at the outside of water cavity 1 is connected with outlet pipeline, and the outlet pipe tube head is located at water
One end of the inner chamber of chamber 1 is connected with outlet pipe 8, and the outlet pipe 8 and the distance at the top of water cavity barrel 11 are less than 10mm.
The two ends of barrel 11 are connected by water cavity transition connection strap 114, and the water cavity transition connection strap 114 is provided with length
Bar shaped boss 1142, the both sides of the strip boss are provided with the first overlap edge of barrel transition connection strap 1141 and barrel mistake
The second overlap edge of connection strap 1143 is crossed, the first overlap edge of water cavity transition connection strap 1141 and water cavity transition connection strap second are overlapped
Side 1143 is connected with the both sides spot welding of the plate of barrel after edge rolling 11 and by the brave sealing of pricker respectively；
The electric secondary heater also includes control chamber 4, and the control chamber 4 includes control chamber barrel 41, the and of outer seal 43
Control chamber transition connection ring 42, the control chamber barrel 41 is the staving of cylindrical hollow cavity, the control chamber barrel
41 one end is connected by control chamber transition connection ring 42 with outer seal 43, and the control chamber transition connection ring 42 is provided with the second ring
Shape boss, the both sides of second annular boss overlap ring and the overlap joint ring of control chamber second, the control provided with control chamber first
The overlap joint ring of chamber first is connected with outer seal 43 by screw, and the overlap joint ring of control chamber second leads to the one end of control chamber barrel 41
Cross spot welding to be connected and by sealed with brazing, the other end of control chamber barrel 41 is with being provided with outside the side water cavity barrel 11 of flange 3
Surface spot welding is connected and passes through sealed with brazing.
The associated components such as the water cavity 1, flange 3, control chamber 4 and outlet pipe preferentially use stainless steel.
Described electric secondary heater manufacture method, comprises the following steps：
(1) making of water cavity transition connection ring 12 and control chamber transition connection ring 42
It is water cavity transition connection ring 12 and the coiled strip of the spreading width of control chamber transition connection ring 42 to take width respectively, according to institute
Need length to be cut, the obtained billot formed after cutting is welded into a ring, the ring is distinguished by roller extrusion forming
Form water cavity transition connection ring 12 and control chamber transition connection ring 42；
The preparation method of control chamber transition connection ring is identical with water cavity transition connection ring 12, the control chamber transition connection ring
Provided with the second annular boss, the both sides of second annular boss overlap ring provided with control chamber first and control chamber second is overlapped
Ring；
(2) making of water cavity barrel 11 and control chamber barrel 41：
1) materials in the tube are selected
Using the materials in the tube of live specification on the market, cut by required length, by the gained water cavity barrel after cutting
11 and the otch of control chamber barrel 41 carry out deburring processing, and in the position boss of 11 respective tube head bore of water cavity barrel 111
Shaping, is then washes out tube head hole 111；
2) coiled strip is selected
A. the making of water cavity transition connection strap 114 and control chamber transition connection strap
The coiled strip for taking width to be the spreading width of barrel transition connection strap 114, is cut according to required length, will be cut
The obtained billot formed afterwards is molded to form barrel transition connection strap by roller extrusion forming or by mould punching, described
Barrel transition connection strap is provided with strip boss 1141, and the both sides of the strip boss are connected to barrel transition company
The first overlap edge of narrow bars 1142 and the second overlap edge of barrel transition connection strap 1143；
The preparation method of control chamber transition connection strap is identical with water cavity transition connection strap 114；
B. the making of the plate of water cavity barrel 11 and the plate of control chamber barrel 41
It is water cavity barrel 11 and the coiled strip of the spreading width of control chamber barrel 41 to take width respectively, is entered according to required length
Row is cut, and the plate obtained after cutting is carried out into edge rolling by furling plate round machine, and in the expansion respective tube of water cavity barrel 11 head bore 111
Position boss forming, is then washes out tube head hole；
C. spot welding
By the first overlap edge of water cavity transition connection strap 114, the second overlap edge barrel plate corresponding with after edge rolling respectively
The both sides spot welding of material is connected；
D. in the position boss forming of 11 respective tube head bore of water cavity barrel 111, it is then washes out tube head hole 111；
(3) making of water cavity component
1) by the side seal of water cavity first first 13, the side seal of water cavity second first 14,3 tube heads 113,3 groups of heating tubes 2, flange 3,5
Bolt and blind pipe 5 are ready to；
2) tube head 113 is fixed on tube head hole 111 by spot welding, the bolt head of bolt 142 is located at water cavity barrel
11 inside and screw mandrel is located at outside water cavity barrel 11 by bolt hole, and the spot welding of bolt 142 is fixed on flange 3 used cooperatively
The side seal of water cavity second first 14 in；
3) two ends of water cavity barrel 11 lead to the overlap joint ring 123 of water cavity second of corresponding water cavity transition connection ring 12 respectively
Spot welding is crossed to be connected, the water cavity first of the water cavity transition connection ring 12 overlap joint ring 121 respectively with the corresponding side seal of water cavity first first 13
It is connected with the side seal of water cavity second first 14 by spot welding；
4) the heating pore spot welding corresponding with flange 3 of heating tube 2 is connected, by the blind pipe hole point corresponding with flange 3 of blind pipe 5
Weldering is connected, and heating tube 2 and blind pipe 5 protrude from the side surface that flange 3 is provided with reinforcement 32；
(4) making of water cavity and control chamber
1) overlap joint of control chamber second ring 423 is connected with the one end of control chamber barrel 41 by spot welding, the control chamber
The other end of barrel 41 is connected with provided with the water cavity barrel outer surface spot welding of flange side；
2) weld seam on water cavity 1 and control chamber 4 is coated into solder paste respectively, sealed by soldering oven；By flange 3 with adding
Solder paste is coated in the side of the connecting place of heat pipe 2, flange 3 and the connecting place of blind pipe 5 close to water cavity barrel 11 respectively, is entered by soldering oven
Row sealing；
(5) complete machine is assembled
Each part, spare and accessory parts are assembled by design requirement.
Described soldering was stove nickel-based brazing, first by furnace operation temperature stabilization at 1050 DEG C~1100 DEG C, then will
The water cavity for coating nickel-based brazing cream is placed in burner hearth, by 40-60min high-temp alloyings so as to commissure under the protection of nitrogen
Sealed.
Embodiment two
The structure of embodiment two and embodiment one is essentially identical, and something in common is repeated no more, below to their difference
Place is illustrated.
As shown in figure 8, the electric secondary heater of embodiment two has lacked control chamber 4, add and be located at being provided with outside for the circumference of water cavity 1
Shell 6,
The shell 6 includes shell barrel 61, shell transition connection ring 62, shell end socket 63 and shell end cap 64, institute
The staving that shell barrel 61 is cylindrical hollow cavity is stated, the shell transition connection ring 62 is provided with the 3rd annular boss, institute
The both sides for stating the 3rd annular boss overlap ring and the overlap joint ring of shell second, one end of the shell barrel 61 provided with shell first
Ring is overlapped with corresponding shell second by spot welding to be connected and by sealed with brazing, the overlap joint ring of shell first and shell end socket
63 are connected by spot welding and by sealed with brazing, and heat-insulation layer is provided between the shell end socket 63, water cavity 1 and shell barrel 61
7, the other end of the shell barrel 61 is connected by bolt with shell end cap 64, the shell barrel 61, shell transition
Connection ring 62, shell end socket 63 and the concentric setting of shell end cap 64.
The associated components such as the water cavity 1, flange 3, shell 6 and outlet pipe preferentially use stainless steel.
The water cavity 1 and shell 6 are concentric, and the correspondence tube head 113 of shell 6 position is provided with shell open-work, the tube head
113 one end away from water cavity barrel are connected by keeping off bubble lid 65 with the shell open-work of the inner chamber of shell 6.
The heat-insulation layer 7 can between water cavity 1 and shell 6 the good eps foam of direct stuffed heat insulated performance, eps foam grain,
The materials such as heat-preservation cotton or directly inject foamed material between water cavity 1 and shell 6, foamed material forms heat-insulation layer by foaming
7。
The preferential heat-insulation layer 7 being made of foamed material, the heat-insulation layer that this method is made forms one with water cavity 1 and shell 6,
High insulating effect, and injection pressure is bigger, foaming, the heat-insulation layer density formed is bigger, and heat insulation effect is better.
The heat-insulation layer 7 is used for being incubated the hot water of the inside of water cavity 11, reduces the loss of heat.
Described electric secondary heater manufacture method, comprises the following steps：
(1) making of water cavity transition connection ring 12 and shell transition connection ring 62
It is water cavity transition connection ring 12 and the coiled strip of the spreading width of shell transition connection ring 62 to take width respectively, according to required
Length is cut, and the obtained billot formed after cutting is welded into a ring, and the ring distinguishes shape by roller extrusion forming
Into water cavity transition connection ring 12 and shell transition connection ring 62；
(2) making of water cavity barrel 11 and shell barrel 61：
1) materials in the tube are selected
Using the materials in the tube of live specification on the market, cut by required length, by the gained water cavity barrel after cutting
11 and shell barrel 41 otch carry out deburring processing, and the position boss of 11 respective tube head bore of water cavity barrel 111 into
Type, is then washes out tube head hole 111；
2) coiled strip is selected
A. the making of water cavity transition connection strap 114 and shell transition connection strap
The coiled strip for taking width to be the spreading width of barrel transition connection strap 114, is cut according to required length, will be cut
The obtained billot formed afterwards is molded to form barrel transition connection strap by roller extrusion forming or by mould punching, described
Barrel transition connection strap is provided with strip boss 1141, and the both sides of the strip boss are connected to barrel transition company
The first overlap edge of narrow bars 1142 and the second overlap edge of barrel transition connection strap 1143；
Shell transition connection strap preparation method is identical with water cavity transition connection strap 114, and the shell transition connection ring is provided with
3rd annular boss, the both sides of the 3rd annular boss overlap ring and the overlap joint ring of shell second provided with shell first；
B. the making of the plate of water cavity barrel 11 and the plate of shell barrel 61
The coiled strip for taking width to be the spreading width of water cavity barrel 11, is cut according to required length, will be obtained after cutting
Plate edge rolling is carried out by furling plate round machine；
The preparation method of shell barrel 61 is identical with water cavity barrel 11；
C. spot welding
By the first overlap edge of water cavity transition connection strap 114, the second overlap edge barrel plate corresponding with after edge rolling respectively
The both sides spot welding of material is connected；
Two ends one end of the shell barrel is connected with the overlap joint ring of shell second by spot welding, and the shell first is overlapped
Ring is connected with corresponding shell end socket by spot welding；
D. in the position boss forming of the expansion respective tube of water cavity barrel 11 head bore 111, it is then washes out tube head hole；
(3) making of water cavity component
1) by the side seal of water cavity first first 13, the side seal of water cavity second first 14,3 tube heads 113,3 groups of heating tubes 2, flange 3,5
Bolt and blind pipe 5 are ready to；
2) tube head 113 is fixed on tube head hole 111 by spot welding, the bolt head of bolt 142 is located at water cavity barrel
11 inside and screw mandrel is located at outside water cavity barrel 11 by bolt hole, and the spot welding of bolt 142 is fixed on flange 3 used cooperatively
The side seal of water cavity second first 14 in；
3) two ends of water cavity barrel 11 lead to the overlap joint ring 123 of water cavity second of corresponding water cavity transition connection ring 12 respectively
Spot welding is crossed to be connected, the water cavity first of the water cavity transition connection ring 12 overlap joint ring 121 respectively with the corresponding side seal of water cavity first first 13
It is connected with the side seal of water cavity second first 14 by spot welding；
4) the heating pore spot welding corresponding with flange 3 of heating tube 2 is connected, by the blind pipe hole point corresponding with flange 3 of blind pipe 5
Weldering is connected, and heating tube 2 and blind pipe 5 protrude from the side surface that flange 3 is provided with reinforcement 32；
(4) making of shell 6 and water cavity 1
1) shell end socket 63 is produced by conventional method；2) two ends of the shell barrel 61 respectively with it is corresponding
Shell second overlaps ring and is connected by spot welding, and the overlap joint of shell first ring passes through spot welding phase with corresponding shell end socket 63 respectively
Even；
3) weld seam on water cavity 1 and shell 6 is coated into solder paste respectively, sealed by soldering oven；By flange 3 and heating
Solder paste is coated in the side of the connecting place of pipe 2, flange 3 and the connecting place of blind pipe 5 close to water cavity barrel 11 respectively, is carried out by soldering oven
Sealing；
(5) complete machine is assembled
Each part, spare and accessory parts are assembled by design requirement.
Referred to it should be noted that middle word "front", "rear", "left", "right", the "up" and "down" used is described above
Direction in accompanying drawing, word " interior " and " outer " are referred respectively to towards or away from the direction of particular elements geometric center.
Method used in the present invention is conventional method unless otherwise required；Used raw material and device, such as
It is conventional commercially available prod without particular provisions.
Only as described above, is only the specific embodiment of the present invention, when can not limit the model implemented of the present invention with this
Enclose, therefore the displacement of its equivalent assemblies, or the equivalent variations made according to scope of patent protection of the present invention and modification, it all should still belong to this hair
The category that bright claims are covered.
Claims (10)
1. a kind of electric secondary heater, including water cavity for water storage, extend into the water cavity and its water heated plus
Heat pipe, it is characterised in that：The water cavity includes water cavity barrel, two water cavity transition connection rings and two water cavity end sockets, described
The two ends of water cavity barrel are connected by water cavity transition connection ring with corresponding water cavity end socket respectively, and the water cavity barrel is cylinder
The staving of shape hollow cavity, the water cavity transition connection ring is provided with first annular boss, and the both sides of the first annular boss are set
There is water cavity first to overlap ring and the overlap joint ring of water cavity second, the water cavity transition connection ring, water cavity barrel and water cavity end socket are coaxial
The heart.
2. electric secondary heater according to claim 1, it is characterised in that：The two ends of the water cavity barrel respectively with it is corresponding
The overlap joint ring of water cavity second be connected by spot welding and sealed by soldering, the water cavity first overlap ring respectively with it is corresponding
Water cavity end socket is connected by spot welding and sealed by soldering.
3. electric secondary heater according to claim 2, it is characterised in that：The corresponding water of the overlap joint of water cavity first ring
The angle that chamber end socket inboard, upright direction is formed is α angles, in the corresponding water cavity barrel of the overlap joint of water cavity second ring
The angle that side vertical direction is formed is β angles, 180 ° of 0 ° of ＜ α angle ＜ and ≠ 90 °, described 0 ° of 180 ° of ＜ α angle ＜ in β angles and ≠
90°。
4. electric secondary heater according to claim 3, it is characterised in that：The α angles and β are all higher than 0 ° and less than 90 °, institute
State water cavity end socket and water cavity barrel rides over the outside of water cavity transition connection ring.
5. the electric secondary heater according to claim 1-4 any one, it is characterised in that：It is straight that the heating tube is located at water cavity
Body bucket is internal and is connected by flange with the water cavity end socket of water cavity barrel one end, and the flange is provided with heating pore and fixation
Hole, the end of the heating tube is connected and by sealed with brazing by heating pore with flange spot welding, the heating tube correspondence water
Chamber end socket center is provided with the through hole used cooperatively with heating tube on flange, and the end socket of the through hole circumference is provided with and fixation
The bolt hole that hole is used cooperatively, the bolt head of the bolt is located inside water cavity barrel and screw mandrel is located at water cavity by bolt hole
Outside barrel, the bolt is connected and by sealed with brazing by bolt hole with water cavity end socket spot welding, and the flange passes through solid
Determine hole with bolt screw mandrel on corresponding end socket to be connected.
6. electric secondary heater according to claim 5, it is characterised in that：The water cavity barrel is provided with three tube head holes,
Tube head hole circumference, which is provided with the round boss for protruding from water cavity barrel outer surface, the round boss, is provided with tube head, institute
Tube head is stated by tube head hole with water cavity barrel by spot welding to be connected and by sealed with brazing.
7. electric secondary heater according to claim 6, it is characterised in that：The electric secondary heater also includes control chamber, institute
Stating control chamber includes control chamber barrel, outer seal and control chamber transition connection ring, and the control chamber barrel is in cylinder
The staving of cavity body, one end of the control chamber barrel is connected by control chamber transition connection ring with outer seal, the control
Chamber transition connection ring is provided with the second annular boss, and the both sides of second annular boss overlap ring and control provided with control chamber first
Chamber second overlaps ring, and the overlap joint of control chamber first ring is connected with outer seal, and the overlap joint ring of control chamber second and control chamber are straight
Body bucket one end is connected by spot welding and by sealed with brazing, and the control chamber barrel other end is with being provided with the straight body of flange side water cavity
Bucket outer surface spot welding is connected and passes through sealed with brazing.
8. electric secondary heater according to claim 6, it is characterised in that：The outside of the water cavity is provided with shell, described outer
Shell includes shell barrel, shell transition connection ring, shell end socket and shell end cap, and the shell barrel is cylindrical, hollow
The staving of cavity, the shell transition connection ring is provided with the 3rd annular boss, and the both sides of the 3rd annular boss are provided with shell
First overlap joint ring and the overlap joint ring of shell second, one end of the shell barrel passes through spot welding with corresponding shell second overlap joint ring
It is connected and by sealed with brazing, the overlap joint of shell first ring is connected with shell end socket by spot welding and by sealed with brazing, institute
State and heat-insulation layer is provided between shell end socket, water cavity and shell barrel.
9. the electric secondary heater manufacture method according to claim 1-8 any one, it is characterised in that：Including following step
Suddenly：
(1) making of water cavity transition connection ring
The coiled strip for taking width to be water cavity transition connection ring spreading width, is cut according to required length, by what is formed after cutting
Obtained billot is welded into a ring, and the ring passes through roller extrusion forming formation water cavity transition connection ring；
(2) making of water cavity barrel：
1) materials in the tube are selected
Using the materials in the tube of live specification on the market, cut by required length, by cutting for the gained water cavity barrel after cutting
Mouth carries out deburring processing, and in water cavity barrel respective tube head bore position boss forming, is then washes out tube head hole；
2) coiled strip is selected
A. the making of barrel transition connection strap
The coiled strip for taking width to be barrel transition connection strap spreading width, is cut according to required length, will be formed after cutting
Obtained billot be molded to form barrel transition connection strap, the barrel by roller extrusion forming or by mould punching
Transition connection strap is provided with boss, and the both sides of the boss are connected to the first overlap edge and the second overlap edge；
B. the making of water cavity barrel plate
The coiled strip for taking width to be water cavity barrel spreading width, is cut, the plate that will be obtained after cutting according to required length
Edge rolling is carried out by furling plate round machine；
C. spot welding
By the both sides spot welding of the first overlap edge of barrel transition connection strap, the second overlap edge respectively with barrel plate after edge rolling
It is connected；
D. the making in tube head hole
In water cavity barrel respective tube head bore position boss forming, tube head hole is then washes out；
(3) making of water cavity component
1) water cavity end socket, tube head, heating tube, flange, bolt and blind pipe are ready to；
2) tube head is fixed on tube head hole by spot welding, tube head is fixed on tube head hole by spot welding, by the bolt of bolt
Head is located inside water cavity barrel and screw mandrel is located at outside water cavity barrel by bolt hole, and bolt spot welding is fixed on into flange
In the bolt hole of the water cavity end socket used cooperatively；
3) two ends of water cavity barrel are connected with the overlap joint ring of water cavity second of corresponding water cavity transition connection ring by spot welding respectively,
The overlap joint of water cavity first ring of the water cavity transition connection ring is connected with corresponding water cavity end socket by spot welding respectively；
4) heating tube, blind pipe are connected with flange correspondence position spot welding；
(4) making of control chamber or shell
1) control chamber is used
A. repeat step (1) produces control chamber transition connection ring, and the control chamber transition connection ring is provided with the second annular boss,
The both sides of second annular boss overlap ring and the overlap joint ring of control chamber second provided with control chamber first；
B. repeat step (2) produces control chamber barrel；
C. the overlap joint of control chamber second ring is connected with control chamber barrel one end by spot welding, and the control chamber barrel is another
End is connected with provided with the water cavity barrel outer surface spot welding of flange side；
D. weld seam on water cavity and control chamber is coated into solder paste respectively, sealed by soldering oven；By flange and heating tube phase
At even, the side of flange and blind pipe connecting place close to water cavity barrel coat solder paste respectively, sealed by soldering oven；
2) shell is used
A. repeat step (1) produces shell transition connection ring, and the shell transition connection ring is provided with the 3rd annular boss, described
The both sides of 3rd annular boss overlap ring and the overlap joint ring of shell second provided with shell first；
B. repeat step (2) produces shell barrel；
C. shell end socket is produced by conventional method；
D. one end of the shell barrel is connected with the overlap joint ring of shell second by spot welding, and the shell first overlaps ring and outer
Shell end socket is connected by spot welding；
E. weld seam on water cavity and shell is coated into solder paste respectively, sealed by soldering oven；Flange is connected with heating tube
Solder paste is coated in the side at place, flange and blind pipe connecting place close to water cavity barrel respectively, is sealed by soldering oven；
(5) complete machine is assembled
Each part, spare and accessory parts are assembled by design requirement.
10. the preparation method of electric secondary heater according to claim 9, it is characterised in that：Described soldering was stove nickel
Then base soldering, be first placed in stove at 1050 DEG C~1100 DEG C by furnace operation temperature stabilization by the water cavity for coating nickel-based brazing cream
In thorax, by 40-60min high-temp alloyings so as to be sealed to commissure under the protection of nitrogen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710674619.4A CN107249225B (en) | 2017-08-09 | 2017-08-09 | Electric auxiliary heater and manufacturing method thereof |
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|---|---|---|---|
| CN201710674619.4A CN107249225B (en) | 2017-08-09 | 2017-08-09 | Electric auxiliary heater and manufacturing method thereof |
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| CN107249225A true CN107249225A (en) | 2017-10-13 |
| CN107249225B CN107249225B (en) | 2023-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108088354A (en) * | 2018-01-22 | 2018-05-29 | 江苏理工学院 | A kind of measurer for detecting bend pipe space angle degree |
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| CN107249225B (en) | 2023-07-21 |
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