CN219081760U - High-strength volute structure of water turbine - Google Patents
High-strength volute structure of water turbine Download PDFInfo
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- CN219081760U CN219081760U CN202223381330.9U CN202223381330U CN219081760U CN 219081760 U CN219081760 U CN 219081760U CN 202223381330 U CN202223381330 U CN 202223381330U CN 219081760 U CN219081760 U CN 219081760U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a high-strength volute structure of a water turbine, which relates to the technical field of water turbines and comprises a volute main body, a first sand discharge pipe and a second sand discharge pipe, wherein a sand discharge assembly is arranged in the volute main body and comprises a first baffle, the first baffle is connected with a second baffle, and a sand inlet is connected with the second baffle. According to the utility model, through the arrangement of the sand discharging assembly, when the flow of water and sediment is detected to be reduced by the flowmeter, the sand inlet end of the first sand discharging pipe is determined to be blocked, then the other intermediate valve is opened to bear the sand discharging work, and meanwhile, one sand discharging valve is closed and the other flushing valve is opened, so that water flow in the water inlet pipe sequentially passes through the flushing valve, the intermediate valve and the flowmeter to enter the first sand discharging pipe to back flush the sand inlet end of the first sand discharging pipe, the blocking of the sand inlet end of the sand discharging pipe is avoided through back flushing, and meanwhile, the first sand discharging pipe and the second sand discharging pipe alternately work, so that sediment can still be discharged by the sand discharging pipe during back flushing.
Description
Technical Field
The utility model relates to the technical field of water turbines, in particular to a high-strength volute structure of a water turbine.
Background
The water turbine and the steam turbine are both used in the field of power generation, but the water turbine is different from the steam turbine in that the water turbine utilizes the high-low level difference to enable water flow to flow from top to bottom, and the rotating wheel is pushed to rotate so as to drive the rotor of the generator to rotate, so that the energy of the water flow is converted into mechanical energy, the rotating wheel is installed inside the volute and supports the rotating wheel through the volute, and meanwhile the volute guides the water flow to enable the water flow to flow along a spiral track so that the water flow is convenient to push the rotating wheel to rotate.
The utility model provides a hydraulic turbine spiral case of application number CN201820997424.3 relates to a hydraulic turbine, includes the spiral case body be provided with the runner through rivers in the spiral case body on the spiral case body outer wall and be located the runner afterbody and be provided with the communicating sediment outflow pipe of runner, sediment outflow pipe is a straight tube. The utility model has the advantages of simple structure, reliable use and low cost, and by adopting the device, sediment in the volute can be discharged in time, the sediment content passing through the guide vane and the rotating wheel is reduced, the abrasion is reduced, the service life of the water turbine overcurrent component is prolonged, and the operation efficiency and the economic efficiency of the power station unit are improved.
According to the technology, sediment is thrown out through centrifugal force generated when water flows along a spiral track, and then the thrown sediment is discharged from a volute through a sediment discharge pipe, so that although sediment in most water flows can be removed, abrasion of a rotating wheel is reduced, the sediment inlet end of the sediment discharge pipe is blocked easily due to small pipe diameter, and most water is discharged from the sediment discharge pipe if the pipe diameter is increased, so that the water pressure is reduced, and the power generation efficiency of the water turbine is affected.
Disclosure of Invention
Based on the above, the utility model aims to provide a high-strength volute structure of a water turbine so as to solve the technical problem.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high strength spiral case structure of hydraulic turbine, includes spiral case main part, first sediment outflow pipe and second sediment outflow pipe, be provided with the sediment outflow subassembly in the spiral case main part, the sediment outflow subassembly includes first baffle, be connected with the second baffle on the first baffle, be connected with into the sand mouth on the second baffle, be connected with the flowmeter on the first sediment outflow pipe, be connected with the intermediate valve on the flowmeter, be connected with flush valve and sediment outflow valve on the intermediate valve respectively, be connected with the inlet tube on the flush valve, be connected with the third sediment outflow pipe on the sediment outflow valve.
By adopting the technical scheme, partial water flow carries sediment which is accumulated together and influenced by centrifugal force in daily work and passes through the second baffle plate to enter the first sediment discharge pipe, then the sediment and the water flow sequentially pass through the flowmeter, the middle valve and the sediment discharge valve to enter the third sediment discharge pipe for discharge, when the flowmeter detects that the flow of water and sediment is reduced, the sediment inlet end of the first sediment discharge pipe is blocked, and then the other middle valve is opened to bear sediment discharge work.
Further, a storage groove is formed in the first baffle, and two flow meters, two intermediate valves, two flushing valves and two sand discharge valves are arranged.
By adopting the technical scheme, part of water flow carries sediment accumulated together under the influence of centrifugal force in daily work, and the sediment passes through the second baffle and enters the first sediment discharge pipe, and then the sediment and the water flow sequentially pass through a flowmeter, an intermediate valve and a sediment discharge valve and enter the third sediment discharge pipe to be discharged.
Further, a water inlet is formed in the volute body, and a first sand discharge pipe and a second sand discharge pipe are connected to the volute body respectively.
Through adopting above-mentioned technical scheme, rivers get into in the spiral case main part through the water inlet, thereby later rivers are led to flow to the runner direction along spiral orbit through spiral case main part direction and are promoted the runner rotation, and rivers produce centrifugal force when flowing along spiral orbit and throw silt to the periphery.
Further, the diameter of one side of the sand inlet is larger than that of the other side of the sand inlet, and the inner wall of the sand inlet is in a slope shape.
Through adopting above-mentioned technical scheme, rivers in the inlet tube get into in the first sand pipe through a flush valve, a intermediate valve and flowmeter in proper order and carry out the back flush to the sand inlet end of first sand pipe to scatter the silt that plugs up on the first sand pipe and discharge from the second sand pipe, thereby reduce silt and fall back to the spiral case and take place because the diameter of advancing sand mouth one side is greater than the rivers in the diameter cooperation spiral case of advancing sand mouth opposite side.
Furthermore, the sand inlet is provided with a plurality of sand inlets, and the sand inlets are distributed in a rectangular array shape.
Through adopting above-mentioned technical scheme, rivers in the inlet tube get into in the first sand pipe through a flush valve, a intermediate valve and flowmeter in proper order and carry out the back flush to the sand inlet end of first sand pipe to scatter the silt that plugs up on the first sand pipe and discharge from the second sand pipe, thereby reduce silt and fall back to the spiral case and take place because the diameter of advancing sand mouth one side is greater than the rivers in the diameter cooperation spiral case of advancing sand mouth opposite side.
Further, another one of the flushing valves is connected to the water inlet pipe, and another one of the sand discharge valves is connected to the third sand discharge pipe.
By adopting the technical scheme, the other sand discharge valve is closed and the other flushing valve is opened, so that water flow in the water inlet pipe sequentially passes through the other flushing valve, the other intermediate valve and the other flowmeter to enter the second sand discharge pipe to back flush the sand inlet end of the second sand discharge pipe.
Further, another one of the flowmeters is connected to the second sand discharge pipe, and another one of the intermediate valves is connected between another one of the flowmeters, another one of the flushing valves, and another one of the sand discharge valves.
By adopting the technical scheme, when the flow of water and sediment is detected to be reduced by the other flowmeter, the sand inlet end of the second sand discharge pipe is determined to be blocked, and then an intermediate valve is opened to enable the first sand discharge pipe to bear sand discharge.
In summary, the utility model has the following advantages:
1. according to the utility model, through the arrangement of the sand discharging assembly, when the flow of water and sediment is detected to be reduced by the flowmeter, the sand inlet end of the first sand discharging pipe is determined to be blocked, then the other intermediate valve is opened to bear sand discharging operation, meanwhile, the sand discharging valve is closed and the flushing valve is opened, so that water flow in the water inlet pipe sequentially passes through the flushing valve, the intermediate valve and the flowmeter to enter the first sand discharging pipe to back flush the sand inlet end of the first sand discharging pipe, thereby flushing the sediment blocked on the first sand discharging pipe and discharging the sediment from the second sand discharging pipe, and as the diameter of one side of the sand inlet is larger than that of the other side of the sand inlet, the water flow in the volute is matched, the phenomenon that the sediment is reversed is reduced, then the intermediate valve is closed to avoid the first sand discharging pipe and the second sand discharging pipe to simultaneously discharge the sediment, when the second sand discharging pipe is blocked, the first sand discharging pipe is opened to bear the sand discharging operation, and the second sand discharging pipe is back flushed by back flushing to avoid the sand inlet end of the first sand discharging pipe to be blocked, and the sediment discharging pipe can be discharged when the sediment is alternately operated.
Drawings
FIG. 1 is a schematic top view of a volute of the present utility model;
FIG. 2 is a schematic illustration of a top-down construction of a volute of the present utility model;
FIG. 3 is a schematic view of a first baffle structure according to the present utility model;
fig. 4 is a schematic view of a second baffle structure according to the present utility model.
In the figure: 1. a volute body; 2. a first sand discharge pipe; 3. a second sand discharge pipe; 4. a sand discharging assembly; 401. a flow meter; 402. an intermediate valve; 403. a flush valve; 404. a sand discharge valve; 405. a water inlet pipe; 406. a third sand discharge pipe; 407. a first baffle; 408. a second baffle; 409. a storage groove; 410. a sand inlet; 5. and a water inlet.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.
The utility model provides a high strength spiral case structure of hydraulic turbine, as shown in figures 1, 2 and 4, includes spiral case main part 1, first sediment outflow pipe 2 and second sediment outflow pipe 3, is provided with sediment outflow subassembly 4 in spiral case main part 1.
Specifically, the sand discharging assembly 4 comprises a first baffle 407, a second baffle 408 is connected to the first baffle 407, a sand inlet 410 for allowing sediment and water to enter is formed in one side of the second baffle 408, a flowmeter 401 for measuring sediment and water flow to determine whether a pipeline is blocked or not is connected to one end of the first sand discharging pipe 2, an intermediate valve 402 for allowing sediment and backwash water to circulate is connected to one side of the flowmeter 401, a flushing valve 403 for backwash and a sand discharging valve 404 for discharging sand are respectively connected to two sides of the bottom of the intermediate valve 402, a water inlet pipe 405 is connected to the bottom of the flushing valve 403, a third sand discharging pipe 406 is connected to the bottom of the sand discharging valve 404, and the sand inlet end of the sand discharging pipe is prevented from being blocked by backwash.
Referring to fig. 1, 2 and 3, in the above embodiment, a receiving groove 409 is formed on one side of the first baffle 407, and two flow meters 401, intermediate valves 402, flushing valves 403 and sand discharge valves 404 are provided, another flushing valve 403 is connected to one end of the water inlet pipe 405, another sand discharge valve 404 is connected to one end of the third sand discharge pipe 406, another flow meter 401 is connected to one end of the second sand discharge pipe 3, another intermediate valve 402 is connected to another flow meter 401, another flushing valve 403 and another sand discharge valve 404, and are communicated through galvanized pipes, so that a certain sand discharge pipe can still discharge sediment during back flushing by alternately working the first sand discharge pipe 2 and the second sand discharge pipe 3.
Referring to fig. 1 and 2, in the above embodiment, a water inlet 5 is formed above one side of a volute body 1, a water supply flow channel is formed in the volute body 1, a first sand discharge pipe 2 and a second sand discharge pipe 3 for discharging sand are respectively connected to one side of the volute body 1 from top to bottom, and the volute guides water flow to enable the water flow to flow along a spiral track so as to facilitate the water flow to push a rotating wheel to rotate.
Referring to fig. 4, in the above embodiment, the sand inlet 410 is provided with a plurality of sand inlets 410, and the sand inlets 410 are distributed in a rectangular array, the diameter of one side of the sand inlets 410 is larger than the diameter of the other side of the sand inlet 410, and the inner walls of the sand inlets 410 are sloped, so as to match with the water flow in the volute to reduce the phenomenon that the silt flows back into the volute.
The implementation principle of the embodiment is as follows: firstly, water flow enters the volute body 1 through the water inlet 5, then flows along a spiral track through the volute body 1 to push the runner to rotate, centrifugal force is generated when the water flow flows along the spiral track to throw sediment to the periphery, then part of the water flow carries the sediment accumulated by the centrifugal force to pass through the second baffle 408 to enter the first sediment discharge pipe 2, and then the sediment and the water flow sequentially pass through the flowmeter 401, the intermediate valve 402 and the sediment discharge valve 404 to enter the third sediment discharge pipe 406 to be discharged;
the first sand discharge pipe 2 is backwashed, when one flowmeter 401 detects that the flow rate of water and sediment is reduced, the sand inlet end of the first sand discharge pipe 2 is regarded as being blocked, then the other intermediate valve 402 is opened to enable the second sand discharge pipe 3 to bear sand discharge, meanwhile, one sand discharge valve 404 is closed and one flushing valve 403 is opened, water in the water inlet pipe 405 sequentially enters the first sand discharge pipe 2 through the flushing valve 403, the intermediate valve 402 and the flowmeter 401 to backwash the sand inlet end of the first sand discharge pipe 2, so that the sediment blocked on the first sand discharge pipe 2 is dispersed and enters the second sand discharge pipe 3 to be discharged, the diameter of one side of the sand inlet 410 is larger than that of the other side of the sand inlet 410, and the water flow in the volute body 1 is matched to reduce the phenomenon that the sediment flows back into the volute body 1, and then the intermediate valve 402 is closed to prevent the first sand discharge pipe 2 and the second sand discharge pipe 3 from being simultaneously discharged;
the second sand discharge pipe 3 is backwashed, when the other flowmeter 401 detects that the flow rate of water and sediment is reduced, the sand inlet end of the second sand discharge pipe 3 is regarded as being blocked, then one intermediate valve 402 is opened to enable the first sand discharge pipe 2 to bear sand discharge, meanwhile, the other sand discharge valve 404 is closed and the other flushing valve 403 is opened, water in the water inlet pipe 405 sequentially enters the second sand discharge pipe 3 through the other flushing valve 403, the other intermediate valve 402 and the other flowmeter 401 to backwash the sand inlet end of the second sand discharge pipe 3, so that sediment blocked on the second sand discharge pipe 3 is dispersed into the first sand discharge pipe 2 to be discharged, and then the other intermediate valve 402 is closed to prevent the first sand discharge pipe 2 and the second sand discharge pipe 3 from discharging sand simultaneously.
Although embodiments of the utility model have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the utility model as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the utility model, provided that such modifications are within the scope of the appended claims.
Claims (7)
1. The utility model provides a high strength spiral case structure of hydraulic turbine, includes spiral case main part (1), first sediment outflow pipe (2) and second sediment outflow pipe (3), its characterized in that: be provided with sediment outflow subassembly (4) in spiral case main part (1), sediment outflow subassembly (4) are including first baffle (407), be connected with second baffle (408) on first baffle (407), be connected with into sand mouth (410) on second baffle (408), be connected with flowmeter (401) on first sediment outflow pipe (2), be connected with intermediate valve (402) on flowmeter (401), be connected with flushing valve (403) and sediment outflow valve (404) on intermediate valve (402) respectively, be connected with inlet tube (405) on flushing valve (403), be connected with third sediment outflow pipe (406) on sediment outflow valve (404).
2. A high strength volute structure for water turbines according to claim 1 wherein: the first baffle (407) is provided with a storage groove (409), and the flowmeter (401), the intermediate valve (402), the flushing valve (403) and the sand discharge valve (404) are all provided with two.
3. A high strength volute structure for water turbines according to claim 1 wherein: a water inlet (5) is formed in the volute body (1), and a first sand discharge pipe (2) and a second sand discharge pipe (3) are respectively connected to the volute body (1).
4. A high strength volute structure for water turbines according to claim 1 wherein: the diameter of one side of the sand inlet (410) is larger than that of the other side of the sand inlet (410), and the inner wall of the sand inlet (410) is in a slope shape.
5. The high-strength volute structure of water turbine of claim 4, wherein: the sand inlet (410) is provided with a plurality of sand inlets (410), and the sand inlets (410) are distributed in a rectangular array shape.
6. A high strength volute structure for water turbines according to claim 2 wherein: the other flushing valve (403) is connected to a water inlet pipe (405), and the other sand discharge valve (404) is connected to a third sand discharge pipe (406).
7. The high-strength volute structure of water turbine of claim 6, wherein: the other flowmeter (401) is connected to the second sand discharge pipe (3), and the other intermediate valve (402) is connected between the other flowmeter (401), the other flushing valve (403) and the other sand discharge valve (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223381330.9U CN219081760U (en) | 2022-12-16 | 2022-12-16 | High-strength volute structure of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223381330.9U CN219081760U (en) | 2022-12-16 | 2022-12-16 | High-strength volute structure of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219081760U true CN219081760U (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223381330.9U Active CN219081760U (en) | 2022-12-16 | 2022-12-16 | High-strength volute structure of water turbine |
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| Country | Link |
|---|---|
| CN (1) | CN219081760U (en) |
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- 2022-12-16 CN CN202223381330.9U patent/CN219081760U/en active Active
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