CN205048421U - Re -heater for boiler - Google Patents
Re -heater for boiler Download PDFInfo
- Publication number
- CN205048421U CN205048421U CN201520797177.9U CN201520797177U CN205048421U CN 205048421 U CN205048421 U CN 205048421U CN 201520797177 U CN201520797177 U CN 201520797177U CN 205048421 U CN205048421 U CN 205048421U
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- Prior art keywords
- vertical portion
- bend pipe
- ceiling
- heat exchanger
- exchanger tube
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- 239000000725 suspension Substances 0.000 claims description 22
- 230000007704 transition Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to an electric power industry's a re -heater for boiler, spiraling including many and setting the heat exchange tube of " W " form to, each heat exchange tube parallels the interval and sets up, the first end return bend that the warp is corresponding respectively of each heat exchange tube is connected with reposition of redundant personnel feed liquor pipe, and the second end of each heat exchange tube is connected with the mass flow drain pipe through return bend that another corresponds respectively, the both ends of each return bend are equipped with respectively and are used for the welded chamfer, the chamfer is in on the lateral wall of return bend tip. Part through passing the return bend ceiling is connected with ceiling looks welded fastening to the heat exchange tube dead weight that makes return bend below connect is fixed by the splice, with the buckling stress of the first vertical portion upper end of eliminating the return bend, and then avoids the emergence of the return bend junction fracture condition. Simultaneously, this novel simple structure, the effect is showing, suitable using widely.
Description
Technical field
The utility model relates to a kind of boiler reheater of power industry, particularly relates to a kind of mounting structure improving reheater twisting resistance.
Background technology
In power system, steam generator system is the necessaries of thermal power generation field, and reheater is the important component part in steam generator system.Reheater is in fact that a kind of low-pressure steam making merit carries out heating again and reaches the steam superheater of uniform temperature, the effect of reheater is the thermal efficiency further increasing power plant's circulation, and the vapor (steam) temperature of last stage vane of steam turbine is controlled in allowed limits.
Existing reheater is generally have many heat exchanger tubes to form, the two ends of heat exchanger tube respectively with shunting feed tube and afflux drain pipe, flow in heat exchanger tube to realize heat transferring medium, and carry out the object of heat exchange with the medium of heat exchanger tube outside.
Meanwhile, the mounting means of existing heat collector is generally as follows: will shunt feed tube and afflux drain pipe arrange with ceiling above, the heat exchanger tube below ceiling is vertically lifted.Adopt this kind of mounting means, because heat exchanger tube is parallel interval arrangement, make need arrange outward extending bend pipe through ceiling place, to make interval between heat exchanger tube increase, avoid interfering between adjacent heat exchange tubes, improve lifting reliability.
But there is following shortcoming in above-mentioned mounting means: because heat exchanger tube self has constant weight, larger twisting stress can be produced, this twisting stress can damage the pad place of bend pipe with shunting feed tube or afflux drain pipe, makes this pad place easily fracture accident occur.
Based on needing above and shortcoming, special proposition the utility model.
Utility model content
The purpose of this utility model is to provide a kind of boiler reheater, to eliminate the twisting stress produced because of deadweight after reheater is installed, improves the installation reliability of reheater.
The technical solution of the utility model is:
A kind of reheater, comprise many and spiral and be arranged to the heat exchanger tube of " W " shape, each heat exchanger tube parallels interval and arranges; The first end of each heat exchanger tube is connected with shunting feed tube through the bend pipe of correspondence respectively, and the second end of each heat exchanger tube is connected with afflux drain pipe through the bend pipe of another correspondence respectively; The two ends of each bend pipe are respectively equipped with the chamfering for welding, and described chamfering is on the lateral wall of bend pipe end.
Further, described bend pipe is arranged through ceiling, the heat exchanger tube below ceiling through bend pipe with the afflux drain pipe that ceiling is prevented or shunt feed tube and be connected.
Further, bend pipe comprise connect successively the first vertical portion, horizontal part and the second vertical portion, described first vertical portion and horizontal part are all located at above ceiling, and the second vertical portion is arranged through ceiling, and relative second vertical portion, described first vertical portion is away from the heat exchanger tube center of " W " shape.
Further, the second vertical portion is welded and fixed mutually with ceiling through the part of ceiling and is connected.
Further, ceiling is provided with the sleeve vertically extended, and the second vertical portion is arranged in sleeve; Relation between the diameter d 1 of sleeve and the outside diameter d 2 of the second vertical portion meets as follows, d2≤d1≤1.1*d2; Relation between the height h1 of sleeve and the height h2 of the second vertical portion meets as follows, 0.5*h1≤h1≤h2.
Further, the upper end of the first vertical portion is provided with the chamfering being convenient to be welded to connect, and described chamfering is located on the outer wall of the first vertical portion.Shunting feed tube corresponding thereto or the link of afflux drain pipe are provided with the chamfering matched, and described chamfering is located on the outer wall of shunting feed tube or afflux drain pipe.
Further, the outer wall of bend pipe end is provided with the transition face of one section of outside wall surface Diameter Gradual Change, this transition face form bend pipe end corresponding, be convenient to the chamfering that bend pipe and adjacent tubes be welded to connect;
Preferably, transition face, in from taper, narrows to end in the middle part of the outer bend pipe without leave of taper gradually; Axis and the bend pipe of taper surface are coaxially arranged, and the bus of taper surface can for arbitrary or its combination in the straight line of inclination or broken line or circular arc line.
Further, heat exchanger tube is connected with many suspension rods, described suspension rod upwards vertically extends, and the upper end of suspension rod is welded and fixed mutually with ceiling and is connected.
Further, the suspension rod spaced set on same heat exchanger tube.
Further, same suspension rod connects many heat exchanger tubes successively.
The utility model compared with prior art tool has the following advantages:
1, by the chamfering being used for welding that will the outer wall of bend pipe end be arranged, make the twisting stress at the connection welding place of bend pipe end be disperseed, improve the torsional strength of bend pipe connection welding, make that the stability of equipment is improved, service life extended.
The part of 2, passing through bend pipe to pass ceiling is welded and fixed mutually with ceiling and is connected, fix to make the heat exchanger tube connected below bend pipe soldered place of conducting oneself with dignity, to eliminate the twisting stress of the first upper end, vertical portion of bend pipe, and then avoid the generation of bend pipe junction crack conditions.
3, by arranging multiple suspension rod be connected with ceiling on heat exchanger tube, the number of support points of heat exchanger tube being increased, reducing the gravitational load of pipe bent position, improve the reliability that equipment is installed.
Meanwhile, this new structure is simple, Be very effective, is suitable for promoting the use of.
Figure of description
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the utility model one embodiment;
Fig. 2 is the structural representation of another embodiment of the utility model;
Fig. 3 and Fig. 4 is that in the utility model embodiment, pipe bent position twisting stress analyzes schematic diagram;
Fig. 5 is the structural representation of bend pipe in the utility model embodiment;
Fig. 6 is the enlarged diagram at A place in the utility model embodiment Fig. 5;
Fig. 7 is the structural representation of bend pipe in another embodiment of the utility model.
Annex illustrates: 1-heat exchanger tube, 2-bend pipe, 3-shunting feed tube, 4-afflux drain pipe, 5-ceiling, 6-suspension rod, 7-sleeve, 8-chamfering, the 21-the first vertical portion, 22-horizontal part, the 23-the second vertical portion, 24-overstriking connector portions, 25-weld part.
Detailed description of the invention
Embodiment one
As shown in Figures 1 to 6, describe a kind of reheater in the present embodiment, it comprises many and spirals and be arranged to the heat exchanger tube 1 of " W " shape, and each heat exchanger tube 1 parallels interval and arranges; The first end of each heat exchanger tube 1 is connected with shunting feed tube 3 through the bend pipe 2 of correspondence respectively, and the second end of each heat exchanger tube 1 is connected with afflux drain pipe 4 through the bend pipe 2 of another correspondence respectively.Thus make heat transferring medium to flow in each heat exchanger tube 1 through shunting feed tube 3 and to carry out heat exchange with the medium flowing through heat exchanger tube 1 outside, the heat transferring medium after heat exchange flows out, to realize the object that heat exchanging medium carries out heating collecting to flow in afflux drain pipe 4.
In the present embodiment, described shunting feed tube 3 and afflux drain pipe 4 are all installed on above ceiling 5, and each heat exchanger tube 1 is all in below ceiling 5.Described bend pipe 2 is arranged through ceiling 5, heat exchanger tube 1 below ceiling 5 is through bend pipe 2 and the afflux drain pipe 4 above ceiling 5 or shunt feed tube 3 and be connected, fix with the lifting realizing exchanging heat pipe, the heat transferring medium flowed through in the gas phase that flows through below ceiling 5 or liquid phase medium and heat exchanger tube is made to carry out heat exchange, heat with heat exchanging medium, reach in exchange heat pipe the object flowing through medium and carry out heating.
Preferably, the first end of each heat exchanger tube 1 is connected with same shunting feed tube 3 through corresponding bend pipe 2 respectively, and the second end is through being connected with same afflux drain pipe 4 through corresponding bend pipe 2 respectively.Shunt feed tube 3 and afflux drain pipe 4 be equipped with the joint or bypass duct that connect one to one mutually respectively with each bend pipe 2.
As shown in Figure 1 and Figure 5, in the present embodiment, bend pipe 2 comprise connect successively the first vertical portion 21, horizontal part 22 and the second vertical portion 23, described first vertical portion 21 and horizontal part 22 are all located at above ceiling 5, second vertical portion 23 is arranged through ceiling 5, and relative second vertical portion 23, described first vertical portion 21 is away from heat exchanger tube 1 center of " W " shape.The upper end of described first vertical portion 21 is connected with corresponding shunting feed tube 3 or afflux drain pipe 4, the lower end of the first vertical portion 21 is held with the first end (the relative center away from heat exchanger tube 1 of this end) of horizontal part 22 and is connected, second end (this end is relatively near the center of heat exchanger tube 1) of horizontal part 22 is connected with the upper end of the second vertical portion 23, and the lower end of the second vertical portion 23 is connected with the corresponding end of heat exchanger tube 1.
In the present embodiment, second vertical portion 23 of bend pipe 2 is welded and fixed mutually with ceiling 5 through the part of ceiling 5 and is connected, fix to make the heat exchanger tube 1 soldered place of conducting oneself with dignity connected below bend pipe 2, to eliminate the twisting stress (twisting stress as shown in Figure 3 and Figure 4) of the first upper end, vertical portion 21 of bend pipe 2, and then avoid the generation of bend pipe 2 junction crack conditions.
All right, the horizontal part 22 of bend pipe 2 is obliquely installed, makes the horizontal part 22 be obliquely installed arrange through ceiling 5, bend pipe can be realized equally through ceiling, heat exchanger tube is shunted feed tube with corresponding or afflux drain pipe is connected.
Embodiment two
The difference of the present embodiment and above-described embodiment one is: as shown in Figure 5, and ceiling 5 is provided with sleeve 77, second vertical portion 23 vertically extended and is arranged in sleeve 77; Relation between the diameter d 1 of sleeve 77 and the outside diameter d 2 of the second vertical portion 23 meets as follows, d2≤d1≤1.1*d2; Preferably, the inner diameter d1 of sleeve 77 and the equal setting of outer diameter d2 of the second vertical portion 23.Relation between the height h1 of the sleeve 77 and height h2 of the second vertical portion 23 meets as follows, 0.5*h1≤h1≤h2.
By the second vertical portion 23 of bend pipe 2 is installed in sleeve 77, sleeve 77 is made to provide horizontal supporting force to the second vertical portion 23, can reach equally and eliminate heat exchanger tube and conduct oneself with dignity the twisting stress that the first upper end, vertical portion is caused, to reach the object of raising equipment reliability.
Embodiment three
In the present embodiment, as shown in Figure 5 and Figure 6, the two ends of each bend pipe 2 are respectively equipped with the chamfering for welding, and described chamfering is on the lateral wall of bend pipe 2 end, to disperse the stress at pad place, improve the torsional strength of bend pipe.
In the present embodiment, the upper end of the first vertical portion is provided with the chamfering being convenient to be welded to connect, and described chamfering is located on the outer wall of the first vertical portion; Shunting feed tube 3 corresponding thereto or the link of afflux drain pipe 4 are provided with the chamfering matched, and described chamfering is located on the outer wall of shunting feed tube 3 or afflux drain pipe 4.
In the present embodiment, the outer wall of bend pipe 2 end is provided with the transition face of one section of outside wall surface Diameter Gradual Change, this transition face form bend pipe 2 end corresponding, be convenient to the chamfering that bend pipe 2 is welded to connect with adjacent tubes.Preferably, transition face is tapered, and the middle part of the outer bend pipe without leave 2 of taper is narrowed gradually to end; Axis and the bend pipe 2 of taper surface are coaxially arranged, and the bus of taper surface can for arbitrary or its combination in the straight line of inclination or broken line or circular arc line.Preferred further, the difference of bend pipe 2 outer diameter corresponding in the middle part of transition face and the outer diameter of the non-chamfered section of bend pipe 2 is not more than 3mm, to avoid the too small generation causing twisting resistance to reduce situation of weld wall thickness.
In the present embodiment, all right, the wall thickness of bend pipe 2 is increased to wall thickness and is not less than 10mm, to improve the twisting resistance of bend pipe 2 junction further.
By the chamfering of bend pipe upper end is located at outside wall portions, make the twisting stress at the connection welding place of bend pipe end be disperseed, improve the torsional strength of bend pipe connection welding, make that the stability of equipment is improved, service life extended.
Embodiment four
In the present embodiment, as shown in Figure 2, heat exchanger tube 1 is placed with many suspension rods 6 respectively, described suspension rod 6 upwards vertically extends, and the upper end of suspension rod 6 is welded and fixed mutually with ceiling 5 and is connected.The lower end of suspension rod 6 is welded and fixed connection mutually with corresponding heat exchanger tube 1, and the number of support points of heat exchanger tube 1 is increased, and reduces the gravitational load at bend pipe 2 place, improves the reliability that equipment is installed.
Preferably, the present embodiment gathers, and each heat exchanger tube 1 is arranged in same vertical plane, is placed with the suspension rod 6 of multiple spaced set in this vertical plane.The upper end of each suspension rod 6 fixes with ceiling 5 respectively and is welded to connect; Suspension rod 6 vertically extends, and makes the lower end of suspension rod 6 successively through each heat exchanger tube 1 of below correspondence, makes same suspension rod 6 connect many heat exchanger tubes 1 successively, reach and reduce the quantity of suspension rod, the effect of saveall production cost.
Embodiment five
As shown in Figure 7, in the present embodiment, the first upper end, vertical portion 21 of bend pipe 2 is provided with overstriking connector portions 24, and the wall thickness of described overstriking connector portions 24 is greater than the wall thickness of the first vertical portion 21, to improve the torsional strength of bend pipe upper end.Preferably, the difference of the wall thickness of described overstriking joint 24 and the wall thickness of the first vertical portion 21 is not less than 2mm.
As shown in Figure 7, in the present embodiment, the two ends up and down of overstriking connector portions 24 are respectively equipped with chamfering 8, and the lower end of overstriking connector portions 24 and the upper end of the first vertical portion 21 are welded and connected.All right, described overstriking connector portions 24 and the first vertical portion 21 are integrated part.
In the present embodiment, the horizontal part 22 of bend pipe 2 can horizontal-extending as shown in Figure 5, also can inclination as shown in Figure 7 extend; Preferably, the two ends of horizontal part 22 are connected through transition chamfering with the second vertical portion with the first vertical portion respectively, to improve the flowing stationarity of pipeline medium.
It should be noted that; above-mentioned specific embodiment is only exemplary; under above-mentioned instruction of the present utility model, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improve or distortion drops in protection domain of the present utility model.
It will be understood by those skilled in the art that specific descriptions are above to explain the purpose of this utility model, not for limiting the utility model.Protection domain of the present utility model is by claim and equivalents thereof.
Claims (10)
1. a boiler reheater, is characterized in that: comprise many and spiral and be arranged to the heat exchanger tube of " W " shape, and each heat exchanger tube parallels interval and arranges; The first end of each heat exchanger tube is connected with shunting feed tube through the bend pipe of correspondence respectively, and the second end of each heat exchanger tube is connected with afflux drain pipe through the bend pipe of another correspondence respectively; The two ends of each bend pipe are respectively equipped with the chamfering for welding, and described chamfering is on the lateral wall of bend pipe end.
2. a kind of boiler reheater according to claim 1, is characterized in that: described bend pipe is arranged through ceiling, the heat exchanger tube below ceiling through bend pipe with the afflux drain pipe that ceiling is prevented or shunt feed tube and be connected.
3. a kind of boiler reheater according to claim 2, it is characterized in that: bend pipe comprise connect successively the first vertical portion, horizontal part and the second vertical portion, described first vertical portion and horizontal part are all located at above ceiling, second vertical portion is arranged through ceiling, and relative second vertical portion, described first vertical portion is away from the heat exchanger tube center of " W " shape.
4. a kind of boiler reheater according to claim 3, is characterized in that: the second vertical portion is welded and fixed mutually with ceiling through the part of ceiling and is connected.
5. a kind of boiler reheater according to claim 4, is characterized in that: ceiling is provided with the sleeve vertically extended, and the second vertical portion is arranged in sleeve; Relation between the diameter d 1 of sleeve and the outside diameter d 2 of the second vertical portion meets as follows, d2≤d1≤1.1*d2; Relation between the height h1 of sleeve and the height h2 of the second vertical portion meets as follows, 0.5*h1≤h1≤h2.
6., according to the arbitrary described a kind of boiler reheater of claim 3 to 5, it is characterized in that: the upper end of the first vertical portion is provided with the chamfering being convenient to be welded to connect, described chamfering is located on the outer wall of the first vertical portion.
7. a kind of boiler reheater according to claim 6, is characterized in that: bend pipe end is provided with the transition face of one section of outside wall surface Diameter Gradual Change, this transition face form bend pipe end corresponding, be convenient to the chamfering that bend pipe and adjacent tubes be welded to connect.
8., according to claim 2 to 5 or 7 arbitrary described a kind of boiler reheaters, it is characterized in that: heat exchanger tube is connected with many suspension rods, described suspension rod upwards vertically extends, and the upper end of suspension rod is welded and fixed mutually with ceiling and is connected.
9. a kind of boiler reheater according to claim 8, is characterized in that: each suspension rod spaced set on same heat exchanger tube.
10. a kind of boiler reheater according to claim 8, is characterized in that: same suspension rod connects many heat exchanger tubes successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520797177.9U CN205048421U (en) | 2015-10-15 | 2015-10-15 | Re -heater for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520797177.9U CN205048421U (en) | 2015-10-15 | 2015-10-15 | Re -heater for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205048421U true CN205048421U (en) | 2016-02-24 |
Family
ID=55341996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520797177.9U Expired - Fee Related CN205048421U (en) | 2015-10-15 | 2015-10-15 | Re -heater for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205048421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168368A (en) * | 2016-08-26 | 2016-11-30 | 江苏汇能锅炉有限公司 | A kind of boiler reheater |
-
2015
- 2015-10-15 CN CN201520797177.9U patent/CN205048421U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168368A (en) * | 2016-08-26 | 2016-11-30 | 江苏汇能锅炉有限公司 | A kind of boiler reheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 |