CN219638900U - Back pressure steam turbine of cogeneration unit - Google Patents
Back pressure steam turbine of cogeneration unit Download PDFInfo
- Publication number
- CN219638900U CN219638900U CN202320445927.0U CN202320445927U CN219638900U CN 219638900 U CN219638900 U CN 219638900U CN 202320445927 U CN202320445927 U CN 202320445927U CN 219638900 U CN219638900 U CN 219638900U
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- China
- Prior art keywords
- turbine body
- rotating
- fixed
- turbine
- back pressure
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- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 24
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000010248 power generation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to the technical field of turbines, in particular to a back pressure turbine of a cogeneration unit, which comprises a turbine body, wherein a transmission part is arranged in the middle of the turbine body, the transmission part is communicated and connected with a conveying pipeline, a cavity for gas flow is formed in the transmission part, a shell of the turbine body is in a symmetrical shape, two rotating parts are fixed in the transmission part, the two rotating parts are symmetrically arranged by the axis of the conveying pipeline, a transmission shaft is arranged between the two rotating parts in a penetrating way, and the cavity through which gas passes is gradually increased.
Description
Technical Field
The utility model relates to the technical field of turbines, in particular to a back pressure turbine of a cogeneration unit.
Background
And when the northern cogeneration unit is in a working condition in winter, the heat supply network circulating water backwater is boosted by the heat supply network circulating pump and then directly enters the heat supply network heater to rise to the required temperature, and then heat is supplied to the urban area. And part of the medium-pressure cylinder steam discharged by the steam turbine enters a heating network heater to heat the heat network circulating water after passing through a heating steam extraction regulating valve, and the rest of the medium-pressure cylinder steam discharged by the medium-pressure cylinder enters a low-pressure cylinder to do work horizontally and then discharges most of heat to the atmosphere through a condenser, main machine circulating water and an indirect cooling tower. In this workflow, a turbine is one of the main devices for converting collected waste, wind energy into mechanical energy and into electrical energy.
The back pressure turbine of the cogeneration unit is provided with the back pressure turbine, and the back pressure turbine is characterized in that the back pressure turbine is provided with the back pressure turbine.
Disclosure of Invention
The utility model mainly aims to provide a back pressure turbine of a cogeneration unit, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the back pressure steam turbine of the cogeneration unit comprises a steam turbine body, a transmission part is arranged in the middle of the steam turbine body, the transmission part is communicated with and connected with a conveying pipeline, a cavity for gas flow is formed in the transmission part, a shell of the steam turbine body is in a symmetrical shape, the axis of the conveying pipeline is parallel to the symmetrical line of the steam turbine body, two rotating parts are fixed in the transmission part and symmetrically arranged on the axis of the conveying pipeline, a transmission shaft is arranged between the two rotating parts in a penetrating manner, two ends of the transmission shaft are respectively rotated and penetrated outside the steam turbine body, a plurality of second turntables are fixed on the transmission shaft, and a plurality of blades are fixed on the second turntables.
Preferably, the casing of the turbine body is symmetrically arranged in two cylindrical shapes, and the inner diameter of the casing of the turbine body gradually increases from the conveying pipeline to the two ends.
Preferably, the blades are obliquely arranged on the second rotary table, a flow gap is formed between each two blades, the flow gap expands outwards from the second rotary table and gradually increases in gap, a decompression groove is formed in the outer end of each blade, and the second rotary table and the blades fixed on the second rotary table are arranged into an impeller set.
Preferably, the plurality of impeller groups arranged in the casing of the turbine body are attached in a shape, and gaps between each blade and the casing of the turbine body are equal.
Preferably, the rotating member comprises a rotating disc, the rotating disc is fixed in a casing of the turbine body, a rotating groove is formed in the rotating disc, the rotating disc is provided with a pipeline communicated with the rotating groove, the pipeline is fixedly penetrated through the casing of the turbine body, the end part of the pipeline is located outside, a limiting disc is rotationally connected in the rotating groove, and lubricating oil is filled between the limiting disc and the rotating groove.
Preferably, a central disc is fixed outside the limiting disc, a plurality of through holes are formed in the central disc and the limiting disc, and the transmission shaft is fixed at the center of the central disc; the steam turbine is characterized in that a frame is fixed outside the steam turbine body, and a bottom plate is fixed at the bottom of the frame.
Compared with the prior art, the utility model has the following beneficial effects:
1. the gas flows into the transmission part from the transmission pipeline, the gas to be transmitted is divided into two halves to be respectively transported to two sides of the inside of the turbine body, the gas is pushed to the blades through the through holes to generate thrust for the blades, the transmission shaft rotates, the rotating shaft is connected with the power generation equipment to generate power, the gas is divided into two halves to convert electric energy, the kinetic energy utilization of the gas is maximized, the situation that the conversion rate of the turbine is not matched and the kinetic energy loss of waste gas is caused is avoided, meanwhile, the chamber through which the gas passes is gradually increased, the impeller set with smaller volume is driven to rotate at first, the rest impeller set is pushed to rotate when the gas is gradually expanded, the kinetic energy of the gas is fully utilized, and the conversion rate between the wind energy and the electric energy is improved.
2. The blade of turbine sets up to the shape of wing, and the shape of blade makes both ends clearance different, and then produces pressure differential, and industrial gas passes through the clearance, produces thrust because of pressure differential for turbine rotates, converts wind energy into mechanical energy, changes into the electric energy through output shaft connection power generation facility.
3. Meanwhile, lubricating oil is arranged in the rotary groove, so that friction between the limiting disc and the rotary groove is reduced, and the energy conversion rate of the device is further improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a back pressure turbine of a cogeneration unit according to the present utility model;
FIG. 2 is a schematic view of the rotor disk and blades of a back pressure turbine of a cogeneration unit according to the present utility model;
FIG. 3 is an enlarged schematic view of the back pressure turbine of the cogeneration unit of the utility model at A in FIG. 2;
fig. 4 is a schematic structural view of a rotary member of a back pressure turbine of a cogeneration unit according to the present utility model.
In the figure: 1. a turbine body; 2. a transmission section; 3. a delivery conduit; 4. a frame; 5. a bottom plate; 6. a transmission shaft; 7. a rotating member; 701. a turntable; 702. a pipe; 703. a rotary groove; 704. a limiting disc; 705. a center plate; 706. a through hole; 8. a second turntable; 9. a blade; 901. a flow slit; 902. a decompression tank.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, 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.
Examples
As shown in fig. 1 to 4, a back pressure turbine of a cogeneration unit comprises a turbine body 1, a transmission part 2 is arranged in the middle of the turbine body 1, the transmission part 2 is communicated and connected with a transmission pipeline 3, a cavity for gas flow is arranged in the transmission part 2, a shell of the turbine body 1 is symmetrical, the axis of the transmission pipeline 3 is parallel to the symmetry line of the turbine body 1, two rotating parts 7 are fixed in the transmission part 2, the two rotating parts 7 are symmetrically arranged by the axis of the transmission pipeline 3, a transmission shaft 6 is arranged between the two rotating parts 7 in a penetrating way, two ends of the transmission shaft 6 are respectively penetrated outside the turbine body 1 in a rotating way, a plurality of second turntables 8 are fixed on the transmission shaft 6, a plurality of blades 9 are fixed on the second turntables 8, the gas flows into the transmission part 2 from the transmission pipeline 3, the gas to be transmitted is divided into two halves to be respectively transported to two sides of the inside of the turbine body 1, the gas is pushed to the blades 9 through the through holes 706, thrust is generated on the blades 9, the transmission shaft 6 rotates, the rotating shaft 6 is connected with the power generation equipment to generate power, the gas is divided into two halves to convert electric energy, the kinetic energy utilization of the gas is maximized, the condition that the conversion rate of the turbine is not matched and the loss of the kinetic energy of waste gas is caused is avoided, meanwhile, the chamber through which the gas passes is gradually increased, the impeller set with smaller volume is driven to rotate at first, the rest impeller set is pushed to rotate when the gas is gradually expanded, the gas kinetic energy is fully utilized, and the conversion rate between the wind energy and the electric energy is improved.
The blade of turbine sets up to the shape of wing, and the shape of blade makes both ends clearance different, and then produces pressure differential, and industrial gas passes through the clearance, produces thrust because of pressure differential for turbine rotates, converts wind energy into mechanical energy, changes into the electric energy through output shaft connection power generation facility.
Meanwhile, lubricating oil is arranged in the rotary groove 703, so that friction between the limiting disc 704 and the rotary groove 703 is reduced, and the energy conversion rate of the device is further improved.
In this embodiment, the casing of the turbine body 1 is symmetrically arranged in two cylindrical shapes, the inner diameter of the casing of the turbine body 1 gradually increases from the conveying pipeline 3 to the two ends, the gas flows into the conveying part 2 from the conveying pipeline 3, the conveyed gas is respectively conveyed to two sides of the inside of the turbine body 1 in two halves, the conveyed gas is pushed to the blades 9 through the through holes 706, thrust is generated on the blades 9, the transmission shaft 6 rotates, and the rotating shaft 6 is connected with the point generating equipment to generate power.
In this embodiment, the blades 9 are obliquely disposed on the second turntable 8, a flow gap 901 is formed between each blade 9, the flow gap 901 expands outwards from the second turntable 8 and the gap gradually increases, a decompression slot 902 is disposed at the outer end of each blade 9, the second turntable 8 and the blades 9 fixed on the second turntable 8 are set into impeller groups, the blades of the turbine are set into wing shapes, the shapes of the blades enable the gaps at two ends to be different, and then a pressure difference is generated, industrial gas passes through the gaps, thrust is generated due to the pressure difference, turbine rotation is accelerated, wind energy is converted into mechanical energy, the mechanical energy is converted into electric energy through an output shaft connection power generation device, the shapes of a plurality of impeller groups disposed inside a casing of the turbine body 1 are attached, and the gap left by each blade 9 and the casing of the turbine body 1 are equal.
In this embodiment, the rotating member 7 includes a turntable 701, the turntable 701 is fixed in the casing of the turbine body 1, a rotating groove 703 is provided in the turntable 701, the turntable 701 has a pipe 702 communicated with the rotating groove 703, the pipe 702 is fixedly penetrating through the casing of the turbine body 1 and the end is located outside, a limit disc 704 is rotatably connected in the rotating groove 703, lubricating oil is filled between the limit disc 704 and the rotating groove 703, and meanwhile, lubricating oil is provided in the rotating groove 703, so that friction force between the limit disc 704 and the rotating groove 703 is reduced, and energy conversion rate of the equipment is further improved.
In the embodiment, a central disc 705 is fixed outside the limiting disc 704, a plurality of through holes 706 are formed in the central disc 705 and the limiting disc 704, and a transmission shaft 6 is fixed at the center of the central disc 705; the outside of the turbine body 1 is fixed with a frame 4, and the bottom of the frame 4 is fixed with a bottom plate 5.
It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and not limiting of the embodiments of the present utility model, and that various other changes and modifications can be made by those skilled in the art based on the above description, and it is not intended to be exhaustive of all of the embodiments, and all obvious changes and modifications that come within the scope of the utility model are defined by the following claims.
Claims (6)
1. The back pressure steam turbine of the cogeneration unit comprises a steam turbine body (1), and is characterized in that: the steam turbine is characterized in that a transmission part (2) is arranged in the middle of the steam turbine body (1), the transmission part (2) is connected with a conveying pipeline (3) in a communicating manner, a cavity for gas flow is formed in the transmission part (2), a shell of the steam turbine body (1) is in a symmetrical shape, the axis of the conveying pipeline (3) is parallel to the symmetrical line of the steam turbine body (1), two rotating parts (7) are fixed in the transmission part (2), the two rotating parts (7) are symmetrically arranged with the axis of the conveying pipeline (3), a transmission shaft (6) is arranged between the two rotating parts (7) in a penetrating manner, two ends of the transmission shaft (6) are all rotated and penetrate through the outer side of the steam turbine body (1), a plurality of second turntables (8) are fixed on the transmission shaft (6), and a plurality of blades (9) are fixed on the second turntables (8).
2. The back pressure turbine of a cogeneration unit of claim 1 wherein: the casing of the turbine body (1) is symmetrically arranged in two cylindrical shapes, and the inner diameter of the casing of the turbine body (1) gradually increases from the conveying pipeline (3) to the two ends.
3. A back pressure turbine of a cogeneration unit according to claim 2, wherein: the blades (9) are obliquely arranged on the second rotary table (8), flow gaps (901) are formed between the blades (9), the flow gaps (901) are outwards expanded from the second rotary table (8) and gradually increased in clearance, decompression grooves (902) are formed in the outer ends of the blades (9), and the second rotary table (8) and the blades (9) fixed on the second rotary table (8) are arranged to be impeller groups.
4. A back pressure turbine of a cogeneration unit according to claim 3, wherein: the turbine body (1) is characterized in that a plurality of impeller sets arranged in the casing of the turbine body (1) are attached to each other in shape, and gaps reserved between the blades (9) and the casing of the turbine body (1) are equal.
5. The back pressure turbine of a cogeneration unit of claim 1 wherein: the rotating piece (7) comprises a rotating disc (701), the rotating disc (701) is fixed in a shell of the turbine body (1), a rotating groove (703) is formed in the rotating disc (701), the rotating disc (701) is provided with a pipeline (702) communicated with the rotating groove (703), the pipeline (702) is fixedly penetrated in the shell of the turbine body (1) and the end part of the pipeline is located outside, a limiting disc (704) is connected in the rotating groove (703) in a rotating mode, and lubricating oil is filled between the limiting disc (704) and the rotating groove (703).
6. The back pressure turbine of a cogeneration unit of claim 5 wherein: a central disc (705) is fixed outside the limiting disc (704), a plurality of through holes (706) are formed in the central disc (705) and the limiting disc (704), and the transmission shaft (6) is fixed at the center of the central disc (705); the steam turbine is characterized in that a frame (4) is fixed outside the steam turbine body (1), and a bottom plate (5) is fixed at the bottom of the frame (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320445927.0U CN219638900U (en) | 2023-03-08 | 2023-03-08 | Back pressure steam turbine of cogeneration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320445927.0U CN219638900U (en) | 2023-03-08 | 2023-03-08 | Back pressure steam turbine of cogeneration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219638900U true CN219638900U (en) | 2023-09-05 |
Family
ID=87812796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320445927.0U Active CN219638900U (en) | 2023-03-08 | 2023-03-08 | Back pressure steam turbine of cogeneration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219638900U (en) |
-
2023
- 2023-03-08 CN CN202320445927.0U patent/CN219638900U/en active Active
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