CN220817714U - DC steam generator with spiral sleeve structure - Google Patents
DC steam generator with spiral sleeve structure Download PDFInfo
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- CN220817714U CN220817714U CN202322645838.3U CN202322645838U CN220817714U CN 220817714 U CN220817714 U CN 220817714U CN 202322645838 U CN202322645838 U CN 202322645838U CN 220817714 U CN220817714 U CN 220817714U
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- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 239000003546 flue gas Substances 0.000 description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to the technical field of steam equipment, in particular to a direct-current steam generator with a spiral sleeve structure. The heat exchange tube comprises a tube body, a middle heat exchange tube and a multi-layer heat exchange tube, wherein the middle heat exchange tube and the multi-layer heat exchange tube are positioned in the tube body, the multi-layer heat exchange tube is positioned at the outer side of the middle heat exchange tube and is communicated with the upper end of the middle heat exchange tube, a capacity expansion assembly is arranged in the heat exchange tube of the multi-layer heat exchange tube, and the capacity expansion assembly is arranged along the flow direction of liquid in the multi-layer heat exchange tube. The utility model can solve the problems that the water consumption cost of the existing steam generator is increased and the control of enterprises on the production cost is not facilitated because the existing steam generator adopts the heat exchange tube with larger size, so that the water inflow in the heat exchange tube needs to be adaptively increased.
Description
Technical Field
The utility model relates to the technical field of steam equipment, in particular to a direct-current steam generator with a spiral sleeve structure.
Background
The existing high-efficiency steam generator is internally provided with a plurality of layers of heat exchange pipe fittings, a light pipe coil pipe type structure is adopted, each layer of heat exchange pipe fittings comprises an inner heat exchange pipe layer, a middle heat exchange pipe layer and an outer heat exchange pipe layer which are sequentially arranged from inside to outside, the plurality of layers of heat exchange pipe fittings are mutually communicated, the input end of the outer heat exchange pipe layer is provided with a water inlet, and the output end of the middle heat exchange pipe layer is connected with a heat exchange coil pipe.
According to the structure of the prior art, the flow direction of the high-temperature flue gas is firstly contacted with the inner heat exchange tube layer, then the flue gas enters between the inner heat exchange tube layer and the middle heat exchange tube layer, finally, the flue gas enters between the middle heat exchange tube layer and the outer heat exchange tube layer for heat exchange, and the high-temperature flue gas flowing through the outer heat exchange tube layer is finally discharged from the flue gas discharge port. In order to achieve a better heat exchange effect, a heat exchange tube with a larger size is generally adopted, so that the water inflow in the heat exchange tube needs to be adaptively improved, the water cost of the existing steam generator is improved, and the control of enterprises on the production cost is not facilitated.
Disclosure of utility model
Aiming at the problem that the water cost is increased because of better heat exchange effect of the existing steam generator, the utility model provides the direct-current steam generator with the spiral sleeve structure.
The above object of the present utility model is achieved by the following technical solutions:
The utility model provides a straight-flow steam generator of screw sleeve structure, includes barrel, middle heat exchange tube and multilayer heat exchange tube spare are located the barrel, multilayer heat exchange tube spare is located the outside of middle heat exchange tube to be linked together with the upper end of middle heat exchange tube, be provided with the dilatation subassembly in the heat exchange tube of multilayer heat exchange tube spare, the dilatation subassembly sets up along the liquid flow direction in the multilayer heat exchange tube spare to increase the area of contact of liquid in the multilayer heat exchange tube spare and heat exchange tube inner wall.
Through adopting the arrangement, the whole multi-layer heat exchange pipe fitting adopts the sleeve structure, the expansion component is arranged in the heat exchange pipe of the multi-layer heat exchange pipe fitting, and the heat exchange pipe with larger size is adopted under the same volume.
The expansion assembly further comprises a flow limiting piece, wherein the flow limiting piece is arranged in the heat exchange tube of the multi-layer heat exchange tube, and the flow limiting piece is integrally arranged along the extending direction of the heat exchange tube of the multi-layer heat exchange tube.
Through adopting above-mentioned setting, the whole heat exchange tube extending direction who follows multilayer heat exchange tube spare of current limiter sets up, makes the liquid in the heat exchange tube have bigger area of contact with the heat exchange tube inner wall to take place the heat transfer better, thereby make heat transfer effect greatly increased.
The utility model further provides that the flow limiting pieces are distributed at intervals along the extending direction of the heat exchange pipes of the multi-layer heat exchange pipe fitting.
Through adopting above-mentioned setting, the flow limiting piece adopts the interval distribution setting along the heat exchange tube extension direction of multilayer heat exchange tube spare, can increase the area of contact of water in the heat exchange tube with the heat exchange tube inner wall, simultaneously, can reduce the material consumption again, is favorable to realizing the control to manufacturing cost.
The utility model further provides that the flow limiting piece is of a hollow tubular structure, and the front end and the tail end of the flow limiting piece are both in a closed state.
Through adopting above-mentioned setting, the restriction spare is hollow tubular structure, can reduce the material consumption, further reduces steam manufacturing cost, and the front end and the terminal of restriction spare are the confined state, have avoided the inside water entering restriction spare in the heat exchange tube, can improve the heat transfer effect of heat exchange tube.
The utility model further provides that the expansion assembly further comprises a support member arranged on the flow limiting member to position the flow limiting member in the heat exchange tube of the multi-layer heat exchange tube.
Through adopting above-mentioned setting, fix the support piece on the restriction piece for the restriction piece location is in the heat transfer pipe of multilayer heat transfer pipe fitting, thereby makes restriction piece outer wall not contact with the heat transfer pipe inner wall, makes the water distribution in the heat transfer pipe more even, and the heat transfer effect is better.
The utility model further provides that the support piece comprises a support block, the support block is arranged on the side wall of the flow limiting piece, and the support block is used for fixing the flow limiting piece in the heat exchange tube of the multi-layer heat exchange tube.
Through adopting above-mentioned setting, fix the supporting shoe between restriction piece outer wall and heat exchange tube inner wall for the outer wall of restriction piece does not contact with the inner wall of heat exchange tube, further improves the heat transfer effect.
The utility model further provides that the support piece comprises a positioning ring, the positioning ring is arranged outside the flow-limiting piece, and symmetrically distributed support handles are arranged on the positioning ring so as to position the flow-limiting piece at the right middle position in the heat exchange tube of the multi-layer heat exchange tube.
Through adopting above-mentioned setting, a plurality of holding rings are installed in the outside of restriction spare, and have the circular support handle of symmetric distribution on the holding ring to be fixed in the position in the middle of the heat exchange tube with the restriction spare, can make the liquid distribution in the heat exchange tube more even to the liquid in the heat exchange tube is heated more even, makes the heat transfer effect of heat exchange tube increase.
The multi-layer heat exchange pipe fitting further comprises an inner heat exchange pipe layer, a middle heat exchange pipe layer and an outer heat exchange pipe layer, wherein the flow limiting piece sequentially penetrates through the inner heat exchange pipe layer, the middle heat exchange pipe layer and the outer heat exchange pipe layer, and the size of the flow limiting piece in the inner heat exchange pipe layer and the size of the flow limiting piece in the outer heat exchange pipe layer are smaller than those in the middle heat exchange pipe layer.
Through adopting above-mentioned setting, multilayer heat exchange pipe fitting includes interior heat exchange tube layer, well heat exchange tube layer and outer heat exchange tube layer, and the time and the number of times that a plurality of heat exchange tube layers's design can increase high temperature flue gas and heat exchange tube contact to can obtain higher heat exchange efficiency and great coefficient of heat transfer, be favorable to improving thermal utilization ratio, further reduce steam manufacturing cost. Meanwhile, water is input from the outer heat exchange tube layer and then enters the inner heat exchange tube layer, and finally steam is formed in the middle heat exchange tube layer and output.
In summary, the utility model has the following beneficial effects:
1. The whole sleeve structure that adopts of multilayer heat exchange pipe fitting has run through the dilatation subassembly in the heat exchange tube of multilayer heat exchange pipe fitting, adopts the heat exchange tube of great size under equal volume, can increase the area of contact of interior liquid of heat exchange tube and heat exchange tube inner wall to improve the heat transfer effect, thereby increase steam generator's evaporation capacity is favorable to reducing steam manufacturing cost, in order to realize the enterprise to manufacturing cost's control.
2. Simultaneously, with support piece installation connection on the restriction piece, can be with restriction piece location in the heat transfer pipe of multilayer heat transfer pipe fitting for restriction piece does not contact with the heat transfer pipe inner wall, is favorable to the liquid distribution in the heat transfer pipe more even, so that the liquid is heated more even, will further improve the heat exchange efficiency of heat transfer pipe.
Drawings
FIG. 1 is a schematic view of the overall structure of a DC steam generator with a spiral sleeve structure according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a once-through steam generator of a screw sleeve construction according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a flow restrictor and support block in a straight steam generator heat exchange tube of a screw sleeve configuration in accordance with an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a flow restrictor and support block in a straight steam generator heat exchange tube of a screw sleeve configuration in accordance with an embodiment of the present utility model.
FIG. 5 is a cross-sectional view of a flow restrictor and a retaining ring in a once-through steam generator heat exchange tube of a two-spiral sleeve configuration in accordance with an embodiment of the present utility model;
FIG. 6 is a cross-sectional view of a flow restrictor and a retaining ring in a once-through steam generator heat exchange tube of a triple helical sleeve configuration in accordance with an embodiment of the present utility model;
FIG. 7 is a cross-sectional view of a flow restrictor and a retaining ring in a once-through steam generator heat exchange tube of a triple helical sleeve configuration in accordance with an embodiment of the present utility model;
Reference numerals: 1. a cylinder; 2. an intermediate heat exchange cylinder; 3. a multi-layer heat exchange tube; 31. a capacity expansion assembly; 311. a flow restrictor; 312. a support; 312a, support blocks; 312b, a positioning ring; 312c, a support handle; 32. an inner heat exchange tube layer; 33. a middle heat exchange tube layer; 34. an outer heat exchange tube layer; 4. a water inlet; 5. a steam outlet; 6. and a flue gas outlet.
Detailed Description
The utility model is further described in detail below with reference to figures 1-7.
Example 1:
The utility model provides a straight flow steam generator of screw sleeve structure, as shown in fig. 1-2, includes barrel 1, intermediate heat exchange section of thick bamboo 2 and multilayer heat exchange pipe fitting 3, and intermediate heat exchange section of thick bamboo 2 is located barrel 1 with multilayer heat exchange pipe fitting 3, and multilayer heat exchange pipe fitting 3 encircles the outside of intermediate heat exchange section of thick bamboo 2 to be linked together with intermediate heat exchange section of thick bamboo 2's upper end.
In this embodiment, the multi-layer heat exchange tube 3 has three heat exchange tubes, which are an inner heat exchange tube layer 32, a middle heat exchange tube layer 33 and an outer heat exchange tube layer 34, and the three heat exchange tubes are sequentially connected and have different inner diameters, wherein the inner diameter of the heat exchange tube in the outer heat exchange tube layer 34 is smaller than the inner diameter of the heat exchange tube in the inner heat exchange tube layer 32, and the inner diameter of the heat exchange tube in the inner heat exchange tube layer 32 is smaller than the inner diameter of the heat exchange tube in the middle heat exchange tube layer 33. Meanwhile, by means of the design of the heat exchange tube layers, the time and the times of contact between the high-temperature flue gas and the heat exchange tubes can be effectively increased when heat exchange work is carried out, the heat utilization rate is improved, and the steam manufacturing cost is further reduced. During heat exchange, water enters the outer heat exchange tube layer 34 from the water inlet 4 at the bottom of the cylinder 1, then flows through the inner heat exchange tube layer 32, and finally forms steam in the middle heat exchange tube layer 33 and is discharged from the steam outlet 5 at the upper end of the cylinder 1.
In addition, as shown in fig. 1-2, two flue gas outlets 6 are provided on both sides of the upper end of the intermediate heat exchange tube 2. When the heat exchange work is carried out, high-temperature flue gas is discharged from the flue gas outlet 6, firstly contacts with the inner heat exchange tube layer 32, then enters between the inner heat exchange tube layer 32 and the middle heat exchange tube layer 33, and finally enters between the middle heat exchange tube layer 33 and the outer heat exchange tube layer 34 for heat exchange.
In this embodiment, the whole multi-layer heat exchange tube 3 adopts a sleeve structure, so that the expansion assembly 31 is disposed in the heat exchange tube of the multi-layer heat exchange tube 3 in a penetrating manner, and the expansion assembly 31 extends along the liquid flowing direction in the multi-layer heat exchange tube 3. When the heat exchange device is used, the heat exchange tube with larger size can be adopted under the condition of the same water consumption, the contact area between the cooling water in the heat exchange tube and the inner wall of the heat exchange tube can be increased through the expansion assembly 31, so that the heat exchange effect is improved, the evaporation capacity of the steam generator is increased, and the steam manufacturing cost is reduced.
As shown in fig. 2-3, in this embodiment, the expansion assembly 31 includes the current limiting member 311, and the current limiting member 311 is disposed in the heat exchange tube of the multi-layer heat exchange tube member 3 in a penetrating manner, and the current limiting member 311 is integrally disposed along the extending direction of the heat exchange tube of the multi-layer heat exchange tube member 3, so that the liquid in the heat exchange tube has a larger contact area with the inner wall of the heat exchange tube, so that heat exchange can better occur, and further, the heat exchange effect of the heat exchange tube with increased volume is effectively improved under the condition of equal water consumption.
In addition, in order to reduce the material loss and further reduce the manufacturing cost of the steam generator, the current limiting piece 311 is designed into a hollow tubular structure, and the front end and the tail end of the current limiting piece 311 are both in a closed state, so that the condition that water in the heat exchange tube enters the inside of the current limiting piece 311 during heat exchange operation is avoided.
As shown in fig. 3 to 4, in the present embodiment, the capacity expansion assembly 31 further includes a supporting member 312, the supporting member 312 is fixed on the outer wall of the flow limiting member 311, and the other side of the supporting member 312 is connected with the inner wall of the heat exchange tube of the multi-layer heat exchange tube member 3, so as to position the flow limiting member 311 in the heat exchange tube of the multi-layer heat exchange tube member 3, so that the outer wall of the flow limiting member 311 is not in contact with the inner wall of the heat exchange tube, the liquid distribution in the heat exchange tube is more uniform, and the heat exchange effect is better.
As shown in fig. 3 to 4, the supporting member 312 includes a plurality of supporting blocks 312a, the supporting blocks 312a are disposed on the side wall of the current limiter 311, and the plurality of supporting blocks 312a are fixed between the outer wall of the current limiter 311 and the inner wall of the heat exchange tube at intervals, so that the outer wall of the current limiter 311 is not in contact with the inner wall of the heat exchange tube, which is beneficial to reducing the heat transmitted from the heat exchange tube to the current limiter 311 directly, thereby effectively prolonging the service life of the current limiter 311.
In addition, during operation, water is input from the outer heat exchange tube layer 34, then enters the inner heat exchange tube layer 32 and finally is output from the middle heat exchange tube layer 33, and as the water in the heat exchange tubes is heated to generate steam, the volume is increased, the size of the flow limiting piece 311 in the inner heat exchange tube layer 32 and the outer heat exchange tube layer 34 is designed to be smaller than that of the flow limiting piece 311 in the middle heat exchange tube layer 33 so as to adapt to the size change of each layer of heat exchange tube of the multi-layer heat exchange tube 3, thereby effectively reducing the occurrence of damage to the heat exchange tube caused by overlarge internal pressure, effectively improving the use safety and operation stability of the heat exchange tubes, and prolonging the service life of the heat exchange tubes and the flow limiting piece 311.
Example 2:
as shown in fig. 5, embodiment 2 of the present application is different from embodiment 1 in that in this embodiment, the current limiting members 311 are disposed at intervals along the extending direction of the heat exchange tube of the multi-layer heat exchange tube 3, and the plurality of current limiting members 311 disposed at intervals respectively correspond to the positions of the plurality of supporting blocks 312 a.
Example 3:
As shown in fig. 6-7, embodiment 3 of the present application is different from embodiment 2 in that, in this embodiment, the supporting member 312 includes a positioning ring 312b, the positioning ring 312b is fixedly sleeved on the outer wall of the current limiting member 311 and is provided with a plurality of current limiting members 311 corresponding to the number of the current limiting members 311, and two symmetrically distributed supporting handles 312c with circular cross sections are fixedly connected to the outer side of the positioning ring 312b, so as to position the current limiting members 311 in the middle part in the heat exchange tube of the multi-layer heat exchange tube 3. Meanwhile, the other side of the circular support handle 312c is fixedly connected with the inner wall of the heat exchange tube, so that the current limiting piece 311 is fixed at the position right in the middle of the heat exchange tube, the flow distribution of liquid in the heat exchange tube can be more uniform when the heat exchange operation is performed, meanwhile, the liquid is heated more uniformly, and the heat exchange efficiency of the heat exchange tube is further increased.
Working principle: during operation, water is input into the outer heat exchange tube layer 34 from the water inlet 4 at the bottom of the cylinder body 1, then enters the inner heat exchange tube layer 32, finally forms steam in the middle heat exchange tube layer 33 and is output, the heat exchange tubes are internally provided with the flow limiting pieces 311 which are distributed at intervals so as to increase the contact area between the water in the heat exchange tubes and the inner wall, and meanwhile, the flow limiting pieces 311 are fixed at the position right in the middle of the heat exchange tubes through the positioning rings 312b, so that the water in the heat exchange tubes flows and is distributed more uniformly during heat exchange operation, and meanwhile, the liquid is heated more uniformly, so that the heat exchange efficiency of the heat exchange tubes is improved.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and those skilled in the art can make modifications to the present embodiment which do not contribute to the utility model as required after reading the present specification, but are protected by the patent laws within the scope of the appended claims.
Claims (8)
1. The utility model provides a direct current steam generator of screw sleeve structure, includes barrel (1), middle heat exchange tube (2) and multilayer heat exchange tube spare (3), middle heat exchange tube (2) are located barrel (1) with multilayer heat exchange tube spare (3), multilayer heat exchange tube spare (3) are located the outside of middle heat exchange tube (2) to be linked together with the upper end of middle heat exchange tube (2), a serial communication port, be provided with dilatation subassembly (31) in the heat exchange tube of multilayer heat exchange tube spare (3), dilatation subassembly (31) set up along the liquid flow direction in multilayer heat exchange tube spare (3) to increase the area of contact of liquid in multilayer heat exchange tube spare (3) and heat exchange tube inner wall.
2. The direct current steam generator of a spiral sleeve structure according to claim 1, wherein the expansion assembly (31) comprises a flow limiting piece (311), the flow limiting piece (311) is arranged in the heat exchange tube of the multi-layer heat exchange tube (3), and the flow limiting piece (311) is integrally and continuously arranged along the extending direction of the heat exchange tube of the multi-layer heat exchange tube (3).
3. The direct current steam generator of a spiral sleeve structure according to claim 1, wherein the expansion assembly (31) comprises flow limiting pieces (311), and the flow limiting pieces (311) are distributed at intervals along the extending direction of the heat exchange tubes of the multi-layer heat exchange tube (3).
4. A straight steam generator of a spiral sleeve structure according to any one of claims 2-3, characterized in that the flow limiting member (311) is of a hollow tubular structure, and the front end and the end of the flow limiting member (311) are both closed.
5. The once-through steam generator of the screw sleeve construction according to claim 4, wherein the expansion assembly (31) further comprises a support (312), the support (312) being arranged on the flow restrictor (311) to position the flow restrictor (311) within the heat exchange tube of the multi-layer heat exchange tube (3).
6. The direct current steam generator of a spiral sleeve structure according to claim 5, wherein the support member (312) comprises a support block (312 a), the support block (312 a) being provided at a side wall of the flow restricting member (311) to fix the flow restricting member (311) within the heat exchanging pipe of the multi-layered heat exchanging pipe member (3).
7. The direct current steam generator of a spiral sleeve structure according to claim 5, wherein the supporting member (312) includes a positioning ring (312 b), the positioning ring (312 b) is disposed outside the flow restricting member (311), and a supporting handle (312 c) connected to an inner wall of the multi-layered heat exchanging tube member (3) is disposed on the positioning ring (312 b) to position the flow restricting member (311) at a middle portion inside the heat exchanging tube of the multi-layered heat exchanging tube member (3).
8. The direct current steam generator with the spiral sleeve structure according to claim 5, wherein the multi-layer heat exchange tube (3) comprises an inner heat exchange tube layer (32), a middle heat exchange tube layer (33) and an outer heat exchange tube layer (34), the current limiting piece (311) sequentially penetrates through the inner heat exchange tube layer (32), the middle heat exchange tube layer (33) and the outer heat exchange tube layer (34), and the current limiting piece (311) in the inner heat exchange tube layer (32) and the outer heat exchange tube layer (34) is smaller than the current limiting piece (311) in the middle heat exchange tube layer (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322645838.3U CN220817714U (en) | 2023-09-27 | 2023-09-27 | DC steam generator with spiral sleeve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322645838.3U CN220817714U (en) | 2023-09-27 | 2023-09-27 | DC steam generator with spiral sleeve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220817714U true CN220817714U (en) | 2024-04-19 |
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ID=90705308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322645838.3U Active CN220817714U (en) | 2023-09-27 | 2023-09-27 | DC steam generator with spiral sleeve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220817714U (en) |
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2023
- 2023-09-27 CN CN202322645838.3U patent/CN220817714U/en active Active
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