CN220248161U - Expansion machine convenient to assembly - Google Patents
Expansion machine convenient to assembly Download PDFInfo
- Publication number
- CN220248161U CN220248161U CN202321994183.4U CN202321994183U CN220248161U CN 220248161 U CN220248161 U CN 220248161U CN 202321994183 U CN202321994183 U CN 202321994183U CN 220248161 U CN220248161 U CN 220248161U
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- cover plate
- expander
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- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001290864 Schoenoplectus Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses an expander convenient to assemble, which belongs to the field of turbine expanders and comprises a turbine volute, a rigid rotor and an adjustable nozzle assembly, wherein the adjustable nozzle assembly is assembled on the rigid rotor and is jointly arranged in the turbine volute, the adjustable nozzle assembly comprises a cover plate, a rotating disc, blades and a positioning disc which are sequentially arranged, the blades are clamped between the rotating disc and the positioning disc, an end cover is arranged on the left side of the cover plate, the end cover is fixed in the turbine volute, the positioning disc is fixed on the turbine volute, the end cover is detachably connected with the cover plate, the positioning disc is detachably connected with the rotating disc, the left end face of the rotating disc is attached to the right end face of the cover plate, an expansion wheel sealing cover is detachably connected with the cover plate and is not contacted with the end cover, and the structure is arranged.
Description
Technical Field
The utility model belongs to the technical field of turbine expanders, and particularly relates to an expander convenient to assemble.
Background
The turbine expander is widely applied to industries such as chemical industry, is a key part machine necessary for obtaining cold energy, such as air separation equipment, natural gas liquefaction separation equipment, low-temperature crushing equipment and the like, and is a heart for ensuring the stable operation of the whole equipment.
The turbine expander generally comprises a turbine volute, a rigid rotor with an expander impeller and a compressor impeller at two ends and an adjustable nozzle assembly, wherein the adjustable nozzle assembly is assembled in the turbine volute; the adjustable nozzle assembly of the conventional expansion machine comprises a positioning disc, nozzle blades attached to the positioning disc, a rotating disc attached to the other side of the nozzle blades, a cover plate arranged on the other side of the rotating disc, and a sealing cover provided with an expansion wheel on the other side of the cover plate, wherein an end cover fixed in a turbine volute is used for clamping the sealing cover of the expansion wheel on the cover plate, the cover plate and the positioning disc are fixed together to clamp the rotating disc and the nozzle blades between the cover plate and the positioning disc, and all the components of the adjustable nozzle assembly of the conventional expansion machine are sequentially arranged from right to left, and particularly see the attached drawing 1.
The traditional expansion machine has the advantages of high pressure, low flow and small appearance, and in order to ensure the expansion effect, the rotating speed of the rotor can be very fast, and the working principle can be adopted to know that the traditional expansion machine has low efficiency, is not energy-saving, has extremely high abrasion of internal parts, and is required to be overhauled when frequently malfunctions. Therefore, the existing expander increases the flow by reducing the pressure, thereby improving the efficiency, reducing the abrasion and achieving the purpose of energy saving. The size of the nozzle blade is improved by increasing the size of the expander, the larger the overall outer diameter of the nozzle blade is at the same rotating speed, the larger the linear speed at the edge of the blade is, and the more airflow the nozzle blade can enter, so that the larger the overall outer diameter of the blade is, the lower the rotating speed of the rotor is under the condition of the same air inflow, the energy consumption is reduced, and the abrasion of equipment is slowed down.
Because the expander is used as equipment for long time, and because of the reasons of environment (industry) and the like, the expander needs to be overhauled regularly, namely the expander needs to be disassembled, the expander is generally large in size, for example, the expander with the diameter of an expansion wheel of about 220 mm is matched with the three-square air separation equipment, the whole body including a compressor, a turbine volute and the like is about 4 tons, the weight of an adjustable nozzle assembly of the expander is about 130 kg, the weight of a locating disc in the expander is about 66 kg, a cover plate and the locating disc are required to be fixed together through bolts, and an expansion wheel sealing cover is fixed on the cover plate through bolts.
The above-mentioned expander is obviously impractical to manually assemble during service due to the large overall maintenance weight of the adjustable nozzle assembly, requiring the use of an air-lift to disassemble and assemble the adjustable nozzle assembly of the expander, and the total time of single disassembly, service and assembly is typically about 1-2 days, whereas the cost of employing an air-lift for 2 days is typically about 1 ten thousand yuan, whereas equipment service is regular, and if damage to the expander nozzle occurs due to user operational errors, this cost has long been intolerable to the equipment use unit or the after-market unit.
Disclosure of Invention
The utility model aims to provide an expander convenient to assemble, so as to solve the problems that the nozzle part of the existing expander provided in the background art is integrated in structural design and large in overall weight, and is not beneficial to manual disassembly and assembly.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an expander convenient to assembly, includes turbine spiral case, rigid rotor and adjustable nozzle assembly, adjustable nozzle assembly and rigid rotor install jointly in the turbine spiral case, adjustable nozzle assembly includes apron, expansion wheel sealed lid, rolling disc, blade and the positioning disk that set gradually from left to right, the blade centre gripping is between rolling disc and positioning disk, the apron left side is provided with the end cover, in the fixed turbine spiral case of end cover, the positioning disk is fixed on the turbine spiral case, end cover and apron can be dismantled and be connected, positioning disk and rolling disc can be dismantled and be connected, there is the fit-up clearance between the terminal surface of deviating from positioning disk one side of rolling disc and the terminal surface of apron, apron and positioning disk can be dismantled and be connected, expansion wheel sealed lid can be dismantled with the apron and be connected and not with the end cover contact.
Preferably, the end cover and the cover plate are connected together through a first bolt, and the positioning disc and the rotating disc are connected together through a second bolt.
Preferably, the positioning disk is divided into two parts in the axial direction to form a thin positioning disk and a positioning pressure disk, and the blades are clamped between the rotating disk and the thin positioning disk.
Preferably, the thin positioning disk and the positioning platen are equal in mass.
Preferably, the thin positioning disc and the positioning pressure disc are fixed through bolts six.
Compared with the prior art, the utility model provides the expander convenient to assemble, which has the following beneficial effects:
according to the utility model, the structural design of a conventional expansion machine is changed, the expansion wheel sealing cover and the cover plate are fixed, then the cover plate and the end cover are fixed, at the moment, the weight of the structures such as the cover plate and the expansion wheel sealing cover is borne by the turbine volute, the whole assembly weight of the adjustable nozzle assembly is effectively reduced, then the rotating disc, the blades and the thin positioning disc are combined into a whole, the cover plate and the rotating disc are connected, an assembly gap exists between the rotating disc and the cover plate, finally the thin positioning disc and the positioning pressure disc are connected, and after the positioning pressure disc and the turbine volute are connected, the whole assembly of the adjustable nozzle assembly part is completed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and together with the embodiments of the utility model and do not constitute a limitation to the utility model, and in which:
FIG. 1 is a cross-sectional view of a prior art conventional expander turbine volute and adjustable nozzle assembly partially assembled;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a cross-sectional view of a turbine volute and adjustable nozzle assembly portion of an expander that is readily assembled in accordance with the present utility model;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
FIG. 5 is a schematic view showing the shape and connection locations between the end cap, cover plate and expansion wheel seal cover in a conventional expander (a) and the shape and connection locations between the end cap, cover plate and expansion wheel seal cover in the present utility model (b);
in the figure: 1. a turbine volute; 2. a rigid rotor; 3. an end cap; 4. sealing cover of expansion wheel; 5. a cover plate; 6. a rotating disc; 7. a blade; 8. a positioning plate; 9. a bolt IV; 10. a fifth bolt; 11. a first bolt; 12. a second bolt; 13. a third bolt; 14. a thin positioning disk; 15. positioning a pressure plate; 16. and a bolt six.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, in the conventional expander, an adjustable nozzle assembly part and an expansion wheel arranged on a rotating shaft in a rigid rotor 2 are put into a turbine volute 1 together, the adjustable nozzle assembly part sequentially comprises an expansion wheel sealing cover 4, a cover plate 5, a rotating disc 6, blades 7 and a positioning disc 8 from left to right, wherein the expansion wheel sealing cover 4 and the cover plate 5 are fixed together through bolts, the cover plate 5 and the positioning disc 8 are fixed together through bolts four 9, the shape and the connection position between the end cover 3, the cover plate 5 and the expansion wheel sealing cover 4 are as shown in fig. 5 a, after the adjustable nozzle assembly is integrally put into the turbine volute 1, the positioning disc 8 is fixed to the turbine volute 1 through bolts five 10, and the conventional adjustable nozzle assembly can only be integrally assembled into the turbine volute 1 after being assembled according to engineering standards due to the structure and the connection mode of the adjustable nozzle assembly.
Referring to fig. 3 and 4, the present utility model provides a technical solution: the utility model provides an expander convenient to assembly, includes turbine spiral case 1, rigid rotor 2 and adjustable nozzle subassembly, and adjustable nozzle subassembly assembles the outside at rigid rotor's expansion wheel, and adjustable nozzle blade height and expansion wheel's impeller blade height are strict centering (high median plane coincidence), adjustable nozzle subassembly assembly and rigid rotor 2 settle jointly in turbine spiral case 1, adjustable nozzle subassembly includes apron 5, expansion wheel sealed lid 4, rolling disc 6, blade 7 and positioning disk 8 that set gradually from left to right, blade 7 centre gripping is between rolling disc 6 and positioning disk 8, apron 5 left side is provided with end cover 3, and end cover 3 is fixed inside turbine spiral case 1, positioning disk 8 is fixed on turbine spiral case 1, end cover 3 and apron 5 can be dismantled and be connected, positioning disk 8 and rolling disc 6 can be dismantled and be connected, there is certain assembly clearance between the terminal surface of deviating from positioning disk 8 one side of rolling disk 6 and apron 5, rolling wheel sealed lid 4 and apron 5 can be dismantled and be connected and be not with end cover 3 contact, wherein, and if figure 5 (5) is shown that a step 5 is a left side is the outer end cover 5, and the outer end cover 5 is formed at the same, and the outer side of a step ring body is formed at the outer side of its top end cover 5, and the top end cover 5 is fixed at the outer side of a step ring body 5, and the top end cover 5 is formed to have a left side and the end cover 5.
Referring to fig. 3 and 4, the end cover 3 and the cover plate 5 are connected together through a first bolt 11, the shape of the expansion wheel sealing cover 4 is shown in fig. 5 b and is fixed at the bent position at the right lower part of the cover plate 5 through a third bolt 13, the positioning disc 8 and the rotating disc 6 are connected together through a second bolt 12, the positioning disc 8 is axially divided into two parts, a thin positioning disc 14 and a positioning pressure disc 15 are formed to reduce the overall weight of the positioning disc 8, the blade 7 is clamped between the rotating disc 6 and the thin positioning disc 14, and the maximum gap between the two end surfaces is controlled to be 0.1 millimeter through the second bolt 12, so that the blade 7 can not be clamped between the positioning disc 8 and the rotating disc 6, the loss of expansion gas is reduced as much as possible, the quality of the thin positioning disc 14 and the quality of the positioning pressure disc 15 are equal, in other embodiments, the quality of the thin positioning disc 14 and the positioning pressure disc 15 are ensured to be basically equal under the influence of technology and the like, and in addition, the fixing pressure disc 15 between the thin positioning disc 14 and the positioning disc 15 is realized through the sixth bolt 16.
The working principle and the using flow of the utility model are as follows:
when the product is installed, the expansion wheel sealing cover 4 is fixed on the cover plate 5, then the cover plate 5 and the end cover 3 are fixed together through the first bolt 11, and at the moment, the weights of the cover plate 5 and the end cover 3 are born by the turbine volute 1, and in the operation process, the use of the first bolt 11 and the third bolt 13 is not influenced because the inlet of the turbine volute 1 for placing the cover plate 5 is not blocked; then, when the rotating disk 6, the blades 7 and the positioning thin disk are assembled, namely, the blades 7 are clamped between the rotating disk 6 and the positioning disk 8, the rotating disk 6 and the positioning thin disk are connected together through the bolts II 12, then, the rotating disk 6, the blades 7 and the positioning thin disk are integrally placed into the turbine volute 1, at the moment, the ring body of the left end face of the rotating disk 6 is sleeved on the positioning outer ring of the right end face of the cover plate 5, the end face of the rotating disk 6 and the end face of the cover plate 5 are abutted together, then, the positioning pressure disk 15 is fixed on the positioning thin disk through the bolts VI 16, finally, the positioning pressure disk 15 is fixed on the end face of the outer side of the turbine volute 1 through the bolts VI 10, and then, the thin positioning disk 14 and the rotating disk are pulled to the right through the bolts VI 16 to enable the end face of the rotating disk 6 and the end face of the cover plate 5 to keep a certain rotation assembly clearance. Finally, insert the rigid rotor 2 with the expansion wheel in the turbine spiral case 1 can, up to this, accomplish the assembly to adjustable nozzle subassembly part, on the contrary, can the process of adjustable nozzle subassembly part dismantlement, such structure setting, through with the whole zero that becomes of expander nozzle part, single part can operate, can effectually solve in the original device expander nozzle part structural design an organic whole, whole heavy, be unfavorable for the manual work to dismantle and the problem of assembly.
With the development of the air separation equipment towards the large-scale, the performance requirement on the expander is higher and higher, the operation is required to be convenient, and the maintenance and the replacement are also more convenient and economical. Through the structure of this novel nozzle, can realize in the large-scale expander within 10 all directions, divide into three with the assembly weight of adjustable nozzle, the purpose that a workman just can very convenient realization be installed and removed has saved maintenance cost greatly, has improved the economic nature of equipment.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an expander convenient to assembly, includes turbine spiral case (1), rigid rotor (2) and adjustable nozzle assembly, adjustable nozzle assembly and rigid rotor (2) settle jointly in turbine spiral case (1), adjustable nozzle assembly includes apron (5), expansion wheel sealed lid (4), rolling disc (6), blade (7) and positioning disk (8) that set gradually from left to right, blade (7) centre gripping is between rolling disc (6) and positioning disk (8), apron (5) left side is provided with end cover (3), in end cover (3) fixed turbine spiral case (1) positioning disk (8) are fixed on turbine spiral case (1), its characterized in that: the end cover (3) is detachably connected with the cover plate (5), the positioning disc (8) is detachably connected with the rotating disc (6), an assembly gap exists between the end face of the rotating disc (6) on one side, deviating from the positioning disc (8), and the end face of the cover plate (5), the cover plate (5) is detachably connected with the positioning disc (8), and the expansion wheel sealing cover (4) is detachably connected with the cover plate (5) and is not in contact with the end cover (3).
2. An expander for facilitating assembly as defined in claim 1, wherein: the end cover (3) is connected with the cover plate (5) through a first bolt (11), and the positioning disc (8) is connected with the rotating disc (6) through a second bolt (12).
3. An expander for facilitating assembly as defined in claim 1, wherein: the positioning disc (8) is axially divided into two parts to form a thin positioning disc (14) and a positioning pressure disc (15), and the blades (7) are clamped between the rotating disc (6) and the thin positioning disc (14).
4. An expander according to claim 3 and wherein said expander is assembled: the thin positioning disc (14) and the positioning pressure disc (15) are equal in mass.
5. An expander according to claim 3 or claim 4 and wherein: the thin positioning disc (14) and the positioning pressure disc (15) are fixed through bolts six (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321994183.4U CN220248161U (en) | 2023-07-27 | 2023-07-27 | Expansion machine convenient to assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321994183.4U CN220248161U (en) | 2023-07-27 | 2023-07-27 | Expansion machine convenient to assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248161U true CN220248161U (en) | 2023-12-26 |
Family
ID=89263799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321994183.4U Active CN220248161U (en) | 2023-07-27 | 2023-07-27 | Expansion machine convenient to assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248161U (en) |
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2023
- 2023-07-27 CN CN202321994183.4U patent/CN220248161U/en active Active
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