CN220978286U - Shaft structure for improving inflow tongue muscle and reducing pressure in well - Google Patents
Shaft structure for improving inflow tongue muscle and reducing pressure in well Download PDFInfo
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- CN220978286U CN220978286U CN202323029729.5U CN202323029729U CN220978286U CN 220978286 U CN220978286 U CN 220978286U CN 202323029729 U CN202323029729 U CN 202323029729U CN 220978286 U CN220978286 U CN 220978286U
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- 210000003205 muscle Anatomy 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000005192 partition Methods 0.000 claims description 34
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 210000002105 tongue Anatomy 0.000 description 12
- 230000008859 change Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000013589 supplement Substances 0.000 description 1
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Abstract
The present utility model provides a shaft structure for improving inflow lingual muscle to reduce pressure in a well, comprising: the two sides of the well body, which are close to the first end of the well body, are respectively provided with a water inlet pipe and an air inlet pipe, and the second end of the well body is connected with a flow outlet pipe; defining the connection part of the water inlet pipe and the well body as a water inlet port, wherein a curved plate is arranged at the water inlet port, the first end of the curved plate is correspondingly connected with the lower part of the end surface of the water inlet port, the second end of the curved plate extends towards the second end of the well body, and the section of the second end is perpendicular to the well wall; the sections at the two ends of the curved plate are semicircular, and the radius is equal to that of the water inlet pipe; the well body is internally provided with an inner baffle, the first end of the inner baffle is positioned below the second end of the curved plate, the second end of the inner baffle is positioned at the second end of the well body, the inner baffle divides the well body into a first area and a second area, and an extension line of the second end of the curved plate is positioned in the first area. The structure of the utility model can reduce the quantity of the sucked gas from the outside of the vertical shaft, and has better improvement effect on the problem of the accumulation of the air mass at the downstream of the vertical shaft.
Description
Technical Field
The utility model relates to the technical field of drainage systems, in particular to a vertical shaft structure for improving inflow tongue muscles and reducing pressure in a well.
Background
Urban inland inundation frequently occurring in recent years is a not small challenge to urban drainage systems in China, and as one of the most important components in underground drainage systems, a shaft plays a role in conveying water flow from an underground shallow layer to an underground deep layer.
The cyclone type vertical shaft is firstly used in hydraulic engineering flood discharge energy dissipation facilities because of good energy dissipation effect and large flood discharge amount, has the advantages of reducing the suction amount of the vertical shaft and simultaneously having good energy dissipation effect, and has the defect of unobvious effect when the drop is high.
The folded plate type vertical shaft is used as a current relatively hot vertical shaft structure, the vertical shaft is divided into a dry area and a wet area, water flow is continuously aerated, falls and collides from the folded plate to achieve the purpose of energy dissipation, and meanwhile, the dry area continuously supplements air to the water flow to enable the water flow to avoid the problems of overlarge negative pressure in the vertical shaft and the like, and the defect that the diameter needs to be enlarged if the overflow is required to be increased is that the diameter of the vertical shaft of the structure is generally large.
The drop flow vertical shaft is the most common vertical shaft structure at present, has the advantages of simple structure, convenient construction and the like, and has the defects that because water flow continuously entrains air to the downstream of the vertical shaft, the negative pressure in the vertical shaft is large, meanwhile, the air is easy to form a detention air mass if gathered at the downstream, and the problems of blowout and the like can be caused if the air is mixed with the water flow.
The Chinese patent document with publication number CN108104242A discloses a direct-current drop structure for reducing the amount of sucked gas, which is characterized in that a middle partition plate with openings at the bottom and the top is arranged in the center of the right opposite surface of a water inlet pipe of a vertical shaft, and the partition plate divides the vertical shaft into a water passing side and a water passing side; on the water passing side, water flow entering the vertical shaft from the water inlet pipe can still be decomposed into small water drops in the free falling process, so that air is sucked from the outside to increase the air pressure of a downstream pipeline, and the huge kinetic energy formed by the free falling of the water flow still causes certain impact damage to the bottom of the vertical shaft, so that the service life of the vertical shaft is reduced; on the water side, though, the gas is circulated during the free fall of the water stream. However, the structure does not change the overall pressure gradient change in the vertical shaft, the flow state of water at the water tongue at the outlet of the water inlet pipe of the vertical shaft is changed from horizontal to vertical, the water-air two-phase effect is complex, the flow state of water is changed severely, and the water-air effect is remarkable.
Disclosure of utility model
The utility model aims at overcoming the defects of the prior art, and provides a shaft structure for improving inflow tongue muscles to reduce the pressure in a well, which can reduce the quantity of sucked gas from the outside of the shaft, has better improvement effect on the problem of accumulation of air masses possibly generated in the downstream of the shaft, and has certain positive significance on the safety of the whole shaft structure and the stable operation of a pipeline system.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a shaft structure for improving inflow latch muscle to reduce pressure in a well, comprising:
The two sides of the well body, which are close to the first end of the well body, are respectively provided with a water inlet pipe and an air inlet pipe, the air inlet pipe is positioned above the water inlet pipe, and the second end of the well body is connected with a flow outlet pipe;
Defining the connection part of the water inlet pipe and the well body as a water inlet port, wherein a curved plate is arranged at the water inlet port, the first end of the curved plate is correspondingly connected with the lower part of the end surface of the water inlet port, the second end of the curved plate extends towards the second end of the well body, and the section of the second end of the curved plate is perpendicular to the well wall; the sections at the two ends of the curved plate are semicircular, and the radius of the curved plate is equal to that of the water inlet pipe;
the well body is internally provided with an inner partition plate, the first end of the inner partition plate is positioned below the second end of the curved plate, the second end of the inner partition plate is positioned at the second end of the well body, the inner partition plate divides the well body into a first area and a second area, and an extension line of the second end of the curved plate is positioned in the first area.
As an alternative embodiment, the arc of connection of the endpoints of the first and second ends of the curved plate corresponds to an angle of 90 °.
As an alternative embodiment, the surface of the inner partition plate is parallel to the well wall, and the inner partition plate is in sealing connection with the inner wall of the well body.
As an alternative embodiment, the distance between the first end of the inner partition and the second end of the curved plate is 5-10cm.
In an alternative embodiment, in the second area, the distance from the inner partition plate to the inner wall of the well body is not higher than 1/4D s, where D s is the diameter of the well body.
As an alternative embodiment, the width of the inner partition is not higher thanWherein D s is the diameter of the well body.
As an alternative embodiment, the diameter of the water inlet pipe is 1/2D s, wherein D s is the diameter of the well body.
As an alternative embodiment, the diameter of the air inlet pipe is 1/4D s, wherein D s is the diameter of the well body.
As an alternative embodiment, the diameter of the outlet pipe is the same as the diameter of the well body.
As an alternative embodiment, the second end of the well body is vertically connected to the outlet pipe by means of a bent pipe.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the vertical shaft structure for improving the inflow water tongue and reducing the pressure in the well, the curved plate and the partition plate in the vertical shaft are arranged at the inflow port, water flows into the vertical shaft from the water inlet pipe, the incidence angle of the water flow is reduced after the water flows through the curved plate, the position of the water flow impact point is reduced, the negative pressure value at the water tongue of the vertical shaft is obviously reduced, the integral pressure gradient change amplitude in the vertical pipe is weakened, the pressure difference between the inside of the vertical shaft and the outside air is reduced, and therefore the air suction degree of the vertical shaft from the outside is slowed down;
the water flow flows out from the second end of the curved plate and then enters the first area, when the water flow falls in the first area, gas circulation is formed in the well body, and the second area is a gas channel in the gas circulation process, so that the external gas at the air inlet pipe is prevented from participating in the internal gas circulation, and the gas quantity sucked from the external is also greatly reduced.
2. The vertical shaft for improving the inflow water tongue and reducing the pressure in the well has the advantages of simple structure, convenient construction, no need of excavating new pipelines and convenient installation and reconstruction of the existing vertical shaft.
Drawings
FIG. 1 is a schematic illustration of a shaft structure for improving inflow tongues and reducing pressure in a well in accordance with the present utility model.
Fig. 2 is a schematic structural view of a curved plate of the present utility model.
Fig. 3 is a schematic structural view of the curved plate of the present utility model.
Reference numerals illustrate: 10. a shaft; 11. a first region; 12. a second region; 20. a water inlet pipe; 30. an air inlet pipe; 40. a outflow pipe; 50. a curved panel; 51. a first end of the curved panel; 52. a second end of the curved panel; 53. connecting arcs of endpoints of the first end and the second end of the curved plate; 60. an inner partition.
Detailed Description
For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.
Aspects of the utility model are described in this disclosure with reference to the drawings, in which are shown a number of illustrative embodiments. The embodiments of the present disclosure are not necessarily intended to include all aspects of the utility model. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, may be implemented in any of a wide variety of ways.
Referring to fig. 1 to 3, in a preferred embodiment of the present utility model, there is provided a shaft structure for improving inflow latch muscle to reduce pressure in a well, comprising:
the well body 10, two sides close to the first end of the well body are respectively provided with a water inlet pipe 20 and an air inlet pipe 30, the air inlet pipe 30 is positioned above the water inlet pipe 20, and the second end of the well body is connected with a flow outlet pipe 40;
Defining the connection part of the water inlet pipe 20 and the well body as a water inlet port, wherein a curved plate 50 is arranged at the water inlet port, a first end 51 of the curved plate is correspondingly connected with the lower part of the end surface of the water inlet port, a second end 52 of the curved plate extends towards the second end direction of the well body 10, and the section of the second end of the curved plate 50 is perpendicular to the well wall; as shown in fig. 2, the cross sections of the two ends of the curved plate 50 are all semicircle, and the radius is equal to the radius of the water inlet pipe;
An inner partition 60 is arranged in the well body, a first end of the inner partition 60 is located below a second end of the curved plate 50, a second end of the inner partition 60 is located at the second end of the well body, the inner partition 60 divides the well body into a first area 11 and a second area 12, and an extension line of the second end of the curved plate 60 is located in the first area 11.
As shown in fig. 3, as an alternative embodiment, the connecting arcs 53 of the endpoints of the curved plate first and second ends correspond to an angle of 90 °.
As an alternative embodiment, the first end of the curved plate 50 is in seamless connection with the lower part of the inlet end face, namely the lower semi-circular arc of the water inlet pipe, and the first end and the lower semi-circular arc of the water inlet pipe can be realized in a welding or prefabricated member mode, and the specific size can be adjusted in a proper amount according to engineering.
As an alternative embodiment, the surface of the inner partition 60 is parallel to the well wall, and the inner partition is in sealing connection with the inner wall of the well body.
As an alternative embodiment, the distance between the first end of the inner partition 60 and the second end of the curved plate 50 is 5-10cm.
As an alternative embodiment, the distance from the inner partition to the inner wall of the well body in the second area 12 is not more than 1/4D s, where D s is the diameter of the well body, so as to ensure that the partition does not block flow and form a better gas circulation.
As an alternative embodiment, the width of the inner partition 60 is no greater thanWherein D s is the diameter of the well body.
As an alternative embodiment, inlet tube 20 has a diameter of 1/2D s, where D s is the well body diameter.
As an alternative embodiment, the diameter of the air inlet pipe 30 is 1/4D s, wherein D s is the well diameter.
As an alternative embodiment, the diameter of the outlet tube 40 is the same as the diameter of the well body.
As an alternative embodiment, the second end of the well body is vertically connected to the outlet pipe by means of a bent pipe.
The utility model relates to a shaft structure for improving inflow lingual muscles and reducing pressure in a well, which has the following working principle:
The water flows into the well body 10 from the water inlet pipe 20, flows out through the curved plate 50 and then enters the first area 11, the arrangement of the curved plate 50 can change the inflow state of the water, the horizontal speed of the water tongue after moving through the curved plate 50 is reduced, the water tongue is smoother, the impact point is reduced, the downward drainage flow is more concentrated, the intensity of impact is reduced, and the air inflow of the well body 10 from the outside is obviously reduced;
When the water flow drops from the second end section of the curved plate 50 to the first area 11, gas circulation is formed inside the well body 10, and the second area 12 is a gas channel in the gas circulation process, so that the problems of negative pressure and gas retention in the vertical shaft can be effectively reduced due to the formation of internal gas circulation, the external gas at the air inlet pipe is prevented from participating in the internal gas circulation, and the gas volume sucked from the outside is also greatly reduced.
Further description will be provided below with reference to specific examples.
Example 1
Taking a well body with a drop height of 9.0m and a diameter of 0.38m as an example.
The water flow in the well body 10 falls by 7.72m, and the bottom of the well body is connected with the outflow pipe 40 through an elbow pipe with the same diameter;
The diameter of the water inlet pipe 20 is 0.19m, and the horizontal length is 2.28m;
The air inlet pipe 30 is arranged at a height higher than the water inlet pipe 20 and has a pipe diameter of 0.1m;
The inner partition plate 60 divides the vertical shaft into a first area and a second area, and in the second area, the distance between the inner partition plate 60 and the inner wall of the shaft body is 0.095m;
The first end section of the curved plate 50 is consistent with the lower semicircular section of the water inlet pipe 20, the angle degree corresponding to the circular arc of the curved plate is 90 degrees, and the second end section of the curved plate 50 is perpendicular to the well wall of the well body.
When the flow rate Q W = 18.6L/s of the water inlet pipe, after the inner well inner partition plate is additionally arranged, internal gas circulation is formed, so that gas entrained to the downstream is continuously supplemented to the upstream of the vertical shaft, and the gas suction amount of the vertical shaft is reduced by 90L/s and is reduced by about 23% compared with that of the original vertical shaft after the inner well inner partition plate is additionally arranged.
After the curved plate is additionally arranged, the impact point of the vertical shaft inflow water tongue is obviously reduced, and the height of the impact point of the vertical shaft water tongue after the curved plate is additionally arranged is reduced by 1.3m compared with that of the original vertical shaft; the pressure difference between the upstream and downstream of the original vertical shaft is 339Pa, the vertical shaft after the curved plate is additionally arranged is only 31Pa, and the air quantity sucked from the outside is greatly reduced after the negative pressure in the vertical shaft is reduced; the flow speed in the air inlet pipe of the original vertical shaft is 24.3m/s, the vertical shaft after the negative pressure in the shaft is reduced is only 9.3m/s, the entrainment gas quantity of the vertical shaft is reduced by 120L/s, and the entrainment gas quantity is reduced by about 30 percent.
While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.
Claims (10)
1. A shaft structure for improving inflow latch muscle to reduce pressure in a well, comprising:
The two sides of the well body, which are close to the first end of the well body, are respectively provided with a water inlet pipe and an air inlet pipe, the air inlet pipe is positioned above the water inlet pipe, and the second end of the well body is connected with a flow outlet pipe;
Defining the connection part of the water inlet pipe and the well body as a water inlet port, wherein a curved plate is arranged at the water inlet port, the first end of the curved plate is correspondingly connected with the lower part of the end surface of the water inlet port, the second end of the curved plate extends towards the second end of the well body, and the section of the second end of the curved plate is perpendicular to the well wall; the sections at the two ends of the curved plate are semicircular, and the radius of the curved plate is equal to that of the water inlet pipe;
the well body is internally provided with an inner partition plate, the first end of the inner partition plate is positioned below the second end of the curved plate, the second end of the inner partition plate is positioned at the second end of the well body, the inner partition plate divides the well body into a first area and a second area, and an extension line of the second end of the curved plate is positioned in the first area.
2. The shaft structure for improving inflow napestrap reducing pressure in a well of claim 1, wherein the arc of connection of the endpoints of the curved plate first and second ends corresponds to an angle of 90 °.
3. The shaft structure for improving inflow latch muscle to reduce pressure in a well of claim 1, wherein the surface of the inner partition is parallel to the well wall and the inner partition is sealingly connected to the inner wall of the well body.
4. The shaft structure for improving inflow lingual muscle to reduce pressure in a well of claim 1, wherein the distance between the first end of the inner divider and the second end of the curved plate is between 5 cm and 10cm.
5. The shaft structure for improving inflow napestrap reducing pressure in a well of claim 1, wherein the distance from the inner baffle to the inner wall of the well in the second region is no more than 1/4D s, wherein D s is the diameter of the well.
6. The shaft structure for improving inflow latch muscle reduction of pressure in a well according to claim 1, wherein the width of the inner partition is not higher thanWherein D s is the diameter of the well body.
7. The shaft structure for improving inflow latch muscle reduction of pressure in a well according to claim 1, wherein the diameter of the water inlet pipe is 1/2D s, wherein D s is the diameter of the well body.
8. The shaft structure for improving inflow napestrap reducing pressure in a well according to claim 1, wherein the diameter of the air inlet pipe is 1/4D s, wherein D s is the diameter of the well body.
9. The shaft structure for improving inflow latch muscle to reduce pressure in a well of claim 1, wherein the diameter of the outflow tube is the same as the diameter of the well body.
10. The shaft structure for improving inflow latch muscle to reduce pressure in a well of claim 1, wherein the second end of the well body is vertically connected to the outflow tube by a bent tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323029729.5U CN220978286U (en) | 2023-11-10 | 2023-11-10 | Shaft structure for improving inflow tongue muscle and reducing pressure in well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323029729.5U CN220978286U (en) | 2023-11-10 | 2023-11-10 | Shaft structure for improving inflow tongue muscle and reducing pressure in well |
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| Publication Number | Publication Date |
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| CN220978286U true CN220978286U (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323029729.5U Active CN220978286U (en) | 2023-11-10 | 2023-11-10 | Shaft structure for improving inflow tongue muscle and reducing pressure in well |
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| Country | Link |
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| CN (1) | CN220978286U (en) |
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2023
- 2023-11-10 CN CN202323029729.5U patent/CN220978286U/en active Active
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