CN211547628U - Novel anti-clogging trash rack for volute water intake - Google Patents
Novel anti-clogging trash rack for volute water intake Download PDFInfo
- Publication number
- CN211547628U CN211547628U CN201922270157.7U CN201922270157U CN211547628U CN 211547628 U CN211547628 U CN 211547628U CN 201922270157 U CN201922270157 U CN 201922270157U CN 211547628 U CN211547628 U CN 211547628U
- Authority
- CN
- China
- Prior art keywords
- trash rack
- volute
- base flange
- water intake
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sink And Installation For Waste Water (AREA)
Abstract
The utility model discloses a novel anti-clogging trash rack for a volute water intake, which comprises a base flange, wherein the surface of the base flange is provided with uniformly distributed threaded holes; a circular groove is formed in the surface of the flange of the base, and a dirt blocking grid is welded in the groove; the trash rack is formed by welding a plurality of special-shaped steel sheets with one end higher and the other end lower to form a slope surface structure; the edge of the circular groove on the surface of the base flange is welded with a flow-picking plate which is upwards raised by a certain angle. The device is through three novel designs of upstream face trajectory, the big three places in the surface of a water gentle slope, bars mouth is outer little, has solved prior art down intake trash rack and has been blockked up by the filth easily, needs frequently carry out the problem of decontaminating, has to show to reduce to silt stifled, also can ensure intake normal work under long-time work to maintain stable water pressure and discharge's characteristics.
Description
Technical Field
The utility model belongs to the technical field of the spiral case water intaking, concretely relates to novel anti stifled trash rack that becomes silted up of spiral case intake.
Background
In the water turbine generator set volute, a volute water intake for providing a water source for technical water supply is arranged, and a trash rack is arranged at the water intake for preventing a large amount of sundries from rushing into a pipeline to block equipment such as a rear-end water filter during water taking. The existing trash racks are generally designed to be paved by steel plates at equal intervals or steel bar grids. For the design of this type, the debris siltation is hung and is blocked on the trash rack body easily to take place, causes water intake pressure or flow and descends, influences water intake normal work.
In the actual production, taking a volute water intake of a unit of a certain domestic hydraulic power plant as an example, after the unit is overhauled, the technical water supply pressure from the volute water intake is gradually reduced from 0.981Mpa to 0.867 Mpa. At the moment, the technical water supply source is switched to other places, so that the water intake of the volute stops working temporarily, and the water flow of the volute impacts silted impurities on the trash rack and then is switched back, the pressure of the water intake of the technical water supply volute rises by 0.05-0.1MPa, but then gradually falls, and the normal work of the water intake of the volute is influenced gradually; it can be seen that along with the increase of water supply time, sundries wound on the trash rack at the water intake of the volute are more and more, and the water supply can be ensured to be normal only by cleaning regularly. The cleaning process is long in time and frequent, and the labor intensity of workers is greatly increased. Therefore, the design of a novel anti-clogging trash rack for the volute water intake is necessary to prevent dirt from blocking the trash rack.
Disclosure of Invention
The utility model aims to solve the technical problem that a novel stifled trash rack of anti silt of spiral case intake is provided, the device is chosen through the upstream face and is flowed, the novel design of three big departments in the surface of a water gentle slope outside, the bars mouth, has solved prior art down intake trash rack and has blockked up easily by the filth, needs frequently to carry out the problem of decontaminating, has to show to reduce stifled, also can ensure intake normal work under long-time work to maintain the characteristics of stable water pressure and discharge.
In order to realize the above design, the utility model adopts the following technical scheme: a novel anti-clogging trash rack for a volute water intake comprises a base flange, wherein threaded holes are uniformly distributed in the surface of the base flange; a circular groove is formed in the surface of the flange of the base, and a dirt blocking grid is welded in the groove; the trash rack is formed by welding a plurality of special-shaped steel sheets with one end higher and the other end lower to form a slope surface structure; the edge of the circular groove on the surface of the base flange is welded with a flow-picking plate which is upwards raised by a certain angle.
The diameter of the base flange and the diameter and the number of the threaded holes are determined according to the size of the volute to be mounted.
The higher side of the dirt blocking grid slope surface structure is the upstream surface and faces the direction of water flow.
The flow-picking plate is arranged on one side of the upstream face, and the rising angle is determined according to actual needs.
The trash rack is characterized in that the trash rack is arranged on the volute, and the trash rack is arranged on the volute.
A novel anti-clogging trash rack for a volute water intake comprises a base flange, wherein threaded holes are uniformly distributed in the surface of the base flange; a circular groove is formed in the surface of the flange of the base, and a dirt blocking grid is welded in the groove; the trash rack is formed by welding a plurality of special-shaped steel sheets with one end higher and the other end lower to form a slope surface structure; the edge of the circular groove on the surface of the base flange is welded with a flow-picking plate which is upwards raised by a certain angle. The device can obviously reduce silting through three novel designs of the upstream surface trajectory, the back surface gentle slope and the grid opening, and can ensure the normal work of the water intake under long-time work, thereby maintaining stable water pressure and water flow.
In a preferred scheme, the diameter of the base flange and the diameter and the number of the threaded holes are determined according to the size of the volute to be installed. Simple structure, during the use, can select the ring flange of unidimensional not as the base flange according to the spiral case of different models, make the device can adapt to the hydraulic turbine group of multiple model.
In the preferred scheme, the higher side of the trash rack slope surface structure is the upstream surface and faces to the direction of water flow; the baffle is arranged on one side of the upstream face, and the rising angle is determined according to actual needs. Simple structure, during the use, the upstream face that the trash rack was first hit to the coming water, at this moment, aquatic debris will be picked up by the flip face, becomes a motion trend of upwards jumping, keeps away from the trash rack mouth as far as possible, and rivers continue to move ahead, runs into the domatic structure's of the surface of a river gentle slope, can further ensure trash rack mouth and debris and keep certain distance.
In a preferred scheme, the clearance of one surface of the trash rack facing the outer side of the volute is smaller, and the clearance of one surface of the trash rack facing the inner side of the volute is larger, so that a gourd-shaped opening structure gradually expanding from outside to inside is formed. Simple structure, during the use, trash rack mouth design is the calabash mouth type of outer little big-inside, in case debris get into the bars mouth, will directly get into inside the pipeline, and can not block in the bars mouth.
A novel anti-clogging trash rack for a volute water intake comprises a base flange, wherein threaded holes are uniformly distributed in the surface of the base flange; a circular groove is formed in the surface of the flange of the base, and a dirt blocking grid is welded in the groove; the trash rack is formed by welding a plurality of special-shaped steel sheets with one end higher and the other end lower to form a slope surface structure; the edge of the circular groove on the surface of the base flange is welded with a flow-picking plate which is upwards raised by a certain angle. The device is through three novel designs of upstream face trajectory, the big three places in the surface of a water gentle slope, bars mouth is outer little, has solved prior art down intake trash rack and has been blockked up by the filth easily, needs frequently carry out the problem of decontaminating, has to show to reduce to silt stifled, also can ensure intake normal work under long-time work to maintain stable water pressure and discharge's characteristics.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic top view of the present invention.
The reference numbers in the figures are: the device comprises a base flange 1, a threaded hole 11, a trash rack 2, a gourd-shaped opening structure 21 and a flow-picking plate 3.
Detailed Description
As shown in fig. 1 to 3, the novel anti-clogging trash rack for the volute water intake comprises a base flange 1, wherein threaded holes 11 are uniformly distributed on the surface of the base flange 1; the surface of the base flange 1 is provided with a circular groove, and a dirt blocking grid 2 is welded in the groove; the trash rack 2 is formed by welding a plurality of special-shaped steel sheets with one end higher and the other end lower to form a slope surface structure; the edge welding of the circular recess on base flange 1 surface has and chooses a class board 3, chooses class board 3 to raise certain angle upwards. The device can obviously reduce silting through three novel designs of the upstream surface trajectory, the back surface gentle slope and the grid opening, and can ensure the normal work of the water intake under long-time work, thereby maintaining stable water pressure and water flow.
In a preferred scheme, the diameter of the base flange 1 and the diameter and the number of the threaded holes 11 are determined according to the size of the volute to be installed. Simple structure, during the use, can select the ring flange of unidimensional not as base flange 1 according to the spiral case of different models, make the device can adapt to the hydraulic turbine group of multiple model.
In the preferred scheme, the higher side of the slope structure of the trash rack 2 is the upstream side and faces to the direction of water flow; the baffle 3 is arranged on one side of the upstream face, and the rising angle is determined according to actual needs. Simple structure, during the use, the upstream face that the trash rack was first hit to the coming water, at this moment, aquatic debris will be picked up by the flip face, becomes a motion trend of upwards jumping, keeps away from the trash rack mouth as far as possible, and rivers continue to move ahead, runs into the domatic structure's of the surface of a river gentle slope, can further ensure trash rack mouth and debris and keep certain distance.
In the preferred scheme, the clearance of the surface of the trash rack 2 facing the outer side of the volute is smaller, and the clearance of the surface facing the inner side of the volute is larger, so that a gourd-shaped opening structure gradually enlarged from outside to inside is formed. Simple structure, during the use, trash rack mouth design is the calabash mouth type of outer little big-inside, in case debris get into the bars mouth, will directly get into inside the pipeline, and can not block in the bars mouth.
When the novel anti-clogging trash rack for the volute water intake is installed and used, the surface of the base flange 1 is provided with threaded holes 11 which are uniformly distributed; the surface of the base flange 1 is provided with a circular groove, and a dirt blocking grid 2 is welded in the groove; the trash rack 2 is formed by welding a plurality of special-shaped steel sheets with one end higher and the other end lower to form a slope surface structure; the edge welding of the circular recess on base flange 1 surface has and chooses a class board 3, chooses class board 3 to raise certain angle upwards. The device can obviously reduce silting through three novel designs of the upstream surface trajectory, the back surface gentle slope and the grid opening, and can ensure the normal work of the water intake under long-time work, thereby maintaining stable water pressure and water flow.
During the use, the diameter of base flange 1 to and the diameter and the quantity of screw hole 11 all confirm according to the size of the spiral case of needs installation, can select the ring flange of different sizes as base flange 1 according to the spiral case of different models, make the device can adapt to the hydraulic turbine group of multiple model.
When in use, the higher side of the slope surface structure of the trash rack 2 is the upstream surface and faces to the direction of water flow; the flow raising plate 3 is arranged on one side of the upstream face, the raising angle is determined according to actual needs, the incoming water firstly hits the upstream face of the trash rack, at the moment, sundries in the water are raised by the raising plate face to form an upward jumping movement trend, the trash rack port is kept away as far as possible, the water flow continues to move forwards, and the trash rack port and the sundries can be further kept at a certain distance when encountering the gentle slope of the slope structure of the back face.
During the use, trash rack 2 is less towards the clearance of the one side in the spiral case outside, and the clearance towards the inside one side of spiral case is great, forms outside-in's calabash mouth structure that enlarges gradually, and trash rack mouth designs for the big calabash mouth type in outer little, in case debris get into the grid mouth, will directly get into inside the pipeline, and can not block at the grid mouth.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (5)
1. The utility model provides a novel anti stifled trash rack that becomes silted up of spiral case water intaking mouth which characterized in that: the device comprises a base flange (1), wherein threaded holes (11) are uniformly distributed on the surface of the base flange (1); the surface of the base flange (1) is provided with a circular groove, and a dirt blocking grid (2) is welded in the groove; the trash rack (2) is formed by welding a plurality of special-shaped steel sheets with one end higher and the other end lower to form a slope surface structure; the edge of the circular groove on the surface of the base flange (1) is welded with a flow-selecting plate (3), and the flow-selecting plate (3) is upwards lifted by a certain angle.
2. The new volute water intake anti-fouling trash rack of claim 1, wherein: the diameter of the base flange (1) and the diameter and the number of the threaded holes (11) are determined according to the size of the volute to be mounted.
3. The new volute water intake anti-fouling trash rack of claim 1, wherein: the higher side of the slope surface structure of the trash rack (2) is the upstream surface and faces the direction of water flow.
4. The new volute water intake anti-fouling trash rack of claim 1, wherein: the flow-picking plate (3) is arranged on one side of the upstream face, and the rising angle is determined according to actual needs.
5. The new volute water intake anti-fouling trash rack of claim 1, wherein: the trash rack (2) is small in gap towards one surface of the outer side of the volute and large in gap towards one surface of the inner portion of the volute, and a gourd-shaped opening structure (21) which is gradually enlarged from outside to inside is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922270157.7U CN211547628U (en) | 2019-12-17 | 2019-12-17 | Novel anti-clogging trash rack for volute water intake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922270157.7U CN211547628U (en) | 2019-12-17 | 2019-12-17 | Novel anti-clogging trash rack for volute water intake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211547628U true CN211547628U (en) | 2020-09-22 |
Family
ID=72506928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922270157.7U Active CN211547628U (en) | 2019-12-17 | 2019-12-17 | Novel anti-clogging trash rack for volute water intake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211547628U (en) |
-
2019
- 2019-12-17 CN CN201922270157.7U patent/CN211547628U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114541312B (en) | Fish collecting method of fish lift device for collecting fish by utilizing tail water of hydropower station | |
| CN211547628U (en) | Novel anti-clogging trash rack for volute water intake | |
| CN202401498U (en) | Reamer stone preventer for cutter-suction dredger | |
| WO2022082912A1 (en) | Environment-friendly water treatment damming device and operating method | |
| CN208009531U (en) | A kind of forebay of electricity generation with static water | |
| CN210216349U (en) | Energy dissipation pier based on turbine streamline type interval staggered mode | |
| CN201634519U (en) | Bar type sand desilting filtering basin | |
| CN112813918A (en) | A silt is led and is removed structure for water conservancy facility | |
| CN212129072U (en) | Submerged energy dissipation pool for water conservancy system tail end | |
| CN210814182U (en) | A environmental protection filter equipment for hydraulic engineering | |
| CN204237620U (en) | A kind of water distribution uniform anaerobic reactor whirlwind-type water distributor | |
| CN210857161U (en) | Hydraulic and hydroelectric engineering is with device of decontaminating | |
| KR101030948B1 (en) | Rake apparatus of rotary type screen | |
| CN212388493U (en) | Breakwater for irrigation and water conservancy | |
| CN207331945U (en) | A kind of clear water part flow arrangement based on siphon principle | |
| CN211621438U (en) | A silt is led and is removed structure for water conservancy facility | |
| CN203822606U (en) | Sewage pump protective device | |
| CN203716279U (en) | Sewage lifting pump station | |
| CN209277942U (en) | Drainage bucket | |
| CN214656857U (en) | Energy dissipation, corrosion reduction and flood drainage structure for flood discharge tunnel | |
| CN104314059B (en) | The tiltedly outstanding overflow automatic impurity thing device that blocks water | |
| CN204996223U (en) | Filter equipment suitable for hydraulic engineering | |
| CN215333633U (en) | Anti-wear ring garbage blocking device of sewage pump | |
| CN217204412U (en) | Shaft type water pump chamber with dirt blocking and silt preventing water inlet and soil blocking plate | |
| CN219099975U (en) | Water baffle for farmland irrigation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |