CN210290261U - Two-way vertical pump station is with going out water diffusion barrier structure - Google Patents
Two-way vertical pump station is with going out water diffusion barrier structure Download PDFInfo
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- CN210290261U CN210290261U CN201921063821.4U CN201921063821U CN210290261U CN 210290261 U CN210290261 U CN 210290261U CN 201921063821 U CN201921063821 U CN 201921063821U CN 210290261 U CN210290261 U CN 210290261U
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Abstract
The utility model relates to a water outlet diffusion structure for a bidirectional vertical pump station, which comprises a despin chamber, a water outlet diffusion horn tube, a rear water guide cone and a box culvert water outlet chamber; the inlet of the despinning chamber is communicated with the impeller, the outlet of the despinning chamber is communicated with the water outlet diffusion flared tube, and the despinning chamber comprises a guide vane hub and a guide vane fixed on the guide vane hub; the rear water guide cone is arranged on the inner wall of the top of the box culvert water outlet chamber, the water outlet diffusion horn tube and part of the despin chamber are arranged in the box culvert water outlet chamber, the water outlet of the water outlet diffusion horn tube faces the inner wall of the top of the box culvert water outlet chamber, the rear water guide cone extends into the water outlet diffusion horn tube, and the inlet of the rear water guide cone along the water flow direction is connected and fixed with the guide vane hub; the box culvert water outlet chamber is communicated with the water outlet flow channel; through the utility model discloses, reached the purpose that improves two-way runner pump device hydraulic efficiency, can provide certain reference for newly-built and the renewal transformation of two-way runner pump station.
Description
Technical Field
The patent of the utility model relates to an adjustment goes out water flow state's two-way vertical pump station with going out water diffusion structure, especially relates to play water diffusion horn pipe and water structures such as back guiding water awl, belongs to hydraulic and hydroelectric engineering technical field.
Background
The main function of the water outlet flow passage is to enable the water flow to be better turned and diffused in the process of flowing into the water outlet pool, and to recover the kinetic energy to the maximum extent under the condition of no flow separation or vortex. The bidirectional flow passage pump station has the advantages of small engineering investment, simple structural form, convenience in construction, installation and maintenance and the like, and is widely applied to engineering practice.
The hydraulic loss of the bidirectional flow channel pump device is mainly concentrated on a water outlet structure part of the pump device, and the flow state in a water outlet flow channel is disordered during actual operation, so that the pump shaft is easily affected by unbalanced radial force, the vibration of the pump shaft and a system is caused, the eccentric wear of a bearing and a filler seal is caused, serious consequences are caused, and the safe and stable operation of the pump device is influenced. In order to solve the problem, the utility model discloses an adjustment goes out water flow state's two-way vertical pump station with going out water diffusion structure, to going out water diffusion horn pipe and the water structures such as back guiding cone and optimize the improvement design, the adjustment goes out the water diffusion horn pipe contrary water side, the water flow state of key position such as water runner in the same direction as water side, reduce the scope and the intensity of swirl, furthest reduces the hydraulic loss of water runner, the lectotype design, the construction of for the two-way water runner of pump station of the same kind provide certain reference foundation.
SUMMERY OF THE UTILITY MODEL
The hydraulic loss who goes out the water runner has important influence to whole pump unit efficiency, to two-way water runner that goes out, main hydraulic loss concentrates on the diffusion loss and the play water diffusion horn tube export loss of rivers between play water diffusion horn tube and the back guiding cone, for bad flow states such as the vortex that further adjustment play water runner key position easily appears, the utility model discloses a two-way vertical pump station is with play water diffusion structure, and the optimization matches play water diffusion horn tube export diameter and height to the flow state of going out water is further adjusted through the back guiding cone that improves the design, reduces out water runner hydraulic loss.
The utility model aims at realizing like this, a two-way vertical pump station is with going out water diffusion barrier structure, characterized by: comprises a despin chamber, an outlet water diffusion horn tube, a rear water guide cone and a box culvert outlet chamber;
the inlet of the despinning chamber is communicated with the impeller, the outlet of the despinning chamber is communicated with the water outlet diffusion flared tube, and a guide vane hub and a guide vane fixed on the guide vane hub are arranged in the despinning chamber; the rear water guide cone is arranged on the inner wall of the top of the box culvert water outlet chamber, the water outlet diffusion horn tube and part of the despin chamber are arranged in the box culvert water outlet chamber, the water outlet of the water outlet diffusion horn tube faces the inner wall of the top of the box culvert water outlet chamber, the rear water guide cone extends into the water outlet diffusion horn tube, and the inlet of the rear water guide cone along the water flow direction is connected and fixed with the guide vane hub; the box culvert water outlet chamber is communicated with the water outlet flow channel;
the despinning chamber adopts a circular truncated cone diffusion section, the diffusion angle is 3 degrees, the inlet diameter of the despinning chamber is the same as the diameter of the impeller, and the outlet diameter of the despinning chamber is 1.05 times of the diameter of the impeller;
the diameter of an inlet of the water outlet diffusion flared pipe is 1.05 times of the diameter of the impeller, the diameter of an outlet of the water outlet diffusion flared pipe is 1.65 times of the diameter of the impeller, and the height of the water outlet diffusion flared pipe is 0.56 times of the diameter of the impeller;
the diameter of the inlet of the rear water guide cone along the water flow direction is 0.3 time of the diameter of the impeller, the diameter of the outlet of the rear water guide cone along the water flow direction is 1.72 times of the diameter of the impeller, and the height of the rear water guide cone is 0.93 time of the diameter of the impeller.
The number of the guide vanes is 5.
The despinning chamber, the rear water guide cone and the box culvert water outlet chamber are all made of metal.
And the rear water guide cone bus adopts a quarter of arc curve.
The utility model has the advantages of reasonable and simple structure, the manufacturing is easy, convenient to use, through the utility model discloses, the two-way vertical pump station of a pair of directions is with going out water diffusion structure provided, the utility model discloses a for adjusting two-way play water runner rivers flow regime better, reduce the harmful swirl scope and the intensity in key position, provided an adjustment play water flow regime two-way vertical pump station with going out water diffusion structure, play water diffusion horn pipe and back water guide awl after the improvement, rationally confirm the exit diameter of play water diffusion horn pipe according to a water runner width, the kinetic energy loss of the export of comprehensive consideration play water diffusion horn pipe and the balance between the inside diffusion loss, the optimization matches play water diffusion horn pipe exit diameter and height, reduces the total hydraulic loss of play water runner to the utmost, improves the hydraulic efficiency of two-way runner pump device. The utility model discloses a room is gone out to despin room, play water diffusion horn tube, back guiding cone, box culvert water outlet chamber. The utility model discloses a component size all uses impeller diameter D as the reference value. The racemization chamber adopts a circular truncated cone diffusion section, the diffusion angle is 3 degrees, the inlet diameter of the racemization chamber is D, the outlet diameter of the racemization chamber is 1.05D, and the racemization chamber is made of metal materials. The diameter of the inlet of the water outlet diffusion horn pipe is 1.05D, the diameter of the outlet of the water outlet diffusion horn pipe is 1.65D, and the height of the water outlet diffusion horn pipe is 0.56D. The diameter of the inlet of the rear water guide cone along the water flow direction is 0.3D, the diameter of the outlet of the rear water guide cone along the water flow direction is 1.72D, and the height of the rear water guide cone is 0.93D; the generatrix of the water cone adopts a quarter of arc curve. The box culvert water outlet chamber is externally connected with the rear water guide cone, the joint of the top parts of the box culvert water outlet chamber is required to be processed smoothly without bulges, and the box culvert water outlet chamber is made of metal materials.
Has the advantages that: the utility model is suitable for an among the two-way runner pump device water structure, the diffusion loss of comprehensive consideration play water diffusion horn pipe export kinetic energy loss and inside, optimization matches and confirms play water diffusion horn pipe export diameter and height, the scope and the intensity of play water diffusion horn pipe contrary water side and play water runner top swirl have been reduced, the flow state of play water runner play water side has been adjusted better, furthest has reduced the hydraulic loss of play water runner, the purpose that improves two-way runner pump device hydraulic efficiency has been reached, can provide certain reference for newly-built and the renewal transformation of two-way runner pump station, provide basis and foundation for further popularization and application of two-way runner pump device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic plan view of the present invention;
FIG. 3 is a structural view of the despin chamber of the present invention;
FIG. 4 is a sectional view of the water outlet diffusion horn of the present invention;
FIG. 5 is a rear cone diagram of the present invention;
FIG. 6 is a schematic view of the usage state of the present invention;
in the figure: 1 racemization chamber, 2 water outlet diffusion horn tubes, 3 rear water guide cones, 4 box culvert water outlet chambers, 5 impellers, 6 water outlet flow channels, 7 guide vanes and 8 guide vane hubs.
Detailed Description
The invention will be further explained with reference to the drawings and the accompanying description.
A water outlet diffusion structure for a bidirectional vertical pump station comprises a despin chamber 1, a water outlet diffusion horn-shaped pipe 2, a rear water guide cone 3 and a box culvert water outlet chamber 4; an inlet of the racemization chamber 1 is communicated with the impeller 5, an outlet of the racemization chamber 1 is communicated with the water outlet diffusion flared tube 2, and the racemization chamber 1 comprises a guide vane hub 8 and 5 guide vanes 7 fixed on the guide vane hub 8; the rear water guide cone 3 is arranged on the inner wall of the top of the box culvert water outlet chamber 4, the water outlet diffusion horn-shaped pipe 2 and part of the despin chamber 1 are arranged in the box culvert water outlet chamber 4, the water outlet of the water outlet diffusion horn-shaped pipe 2 faces the inner wall of the top of the box culvert water outlet chamber 4, the rear water guide cone 3 extends into the water outlet diffusion horn-shaped pipe 2, and the inlet of the rear water guide cone 3 along the water flow direction is connected and fixed with the guide vane hub 8; the box culvert water outlet chamber 4 is communicated with the water outlet flow passage 6. The despinning chamber 1 adopts a circular truncated cone diffusion section, the diffusion angle is 3 degrees, the diameter of an inlet of the despinning chamber 1 is the same as that of the impeller 5, and the diameter of an outlet of the despinning chamber 1 is 1.05 times of that of the impeller 5; the diameter of an inlet of the water outlet diffusion flared pipe 2 is 1.05 times of the diameter of the impeller 5, the diameter of an outlet of the water outlet diffusion flared pipe is 1.65 times of the diameter of the impeller 5, and the height of the water outlet diffusion flared pipe is 0.56 times of the diameter of the impeller 5; the diameter of the inlet of the rear water guide cone 3 along the water flow direction is 0.3 time of the diameter of the impeller 5, the diameter of the outlet of the rear water guide cone 3 along the water flow direction is 1.72 times of the diameter of the impeller 5, and the height of the rear water guide cone 3 is 0.93 time of the diameter of the impeller 5.
In addition, the racemization chamber 1, the rear water guide cone 3 and the box culvert water outlet chamber 4 are all made of metal. The generatrix of the rear water cone 3 adopts a quarter of a circular arc curve.
Namely, the utility model discloses a despin room 1, play water diffusion horn pipe 2, back guiding cone 3, box culvert play water chamber 4. The inlet section of the racemization chamber 1 corresponds to the outlet section of the impeller 5 in size; the outlet section of the despinning chamber 1 corresponds to the inlet section of the water outlet diffusion flared tube 2 in size, a guide vane hub 8 is fixed in the despinning chamber 1, and 5 guide vanes are fixed on the guide vane hub 8; the sizes of guide vane hubs 8 in the inlet section racemization chamber 1 of the rear water guide cone 3 correspond to each other, smooth transition of all joints is ensured, and the racemization chamber 1 is made of metal; the rear water guiding cone 3 is connected with the box culvert water outlet chamber 4, the joint of the top parts of the rear water guiding cone 3 and the box culvert water outlet chamber 4 needs to be processed smoothly without bulges, and the rear water guiding cone 3 and the box culvert water outlet chamber 4 are both made of metal materials; the box culvert water outlet chamber 4 is connected with the water outlet flow passage 6, and the connection part is in smooth transition.
The utility model provides a pair of two-way vertical pump station is with going out water diffusion barrier constructs, improve the back at large-traffic operating mode (1.4)Q bep) Optimum working conditionsQ bep) Low flow regime (0.6)Q bep) Under the three characteristic working conditions, no vortex is generated above the outlet at the upstream side of the water outlet flared pipe, the strength of the vortex at the top of the water outlet flow channel is reduced to different degrees, the flow state of the water outlet flow channel at the downstream side is better adjusted, and no undesirable flow states such as vortex and the like are generated. Through physical model tests, under the optimal working condition, the device model efficiency of the bidirectional vertical pump station is 63.06%, which is improved by 4% compared with the pump device model of the original scheme.
The utility model discloses an in the engineering reality is used to according to given proportion to reach furthest and improve the inside flow state of water runner, have important engineering value.
Claims (4)
1. The utility model provides a two-way vertical pump station is with going out water diffusion structure, characterized by: comprises a despin chamber (1), a water outlet diffusion horn tube (2), a rear water guide cone (3) and a box culvert water outlet chamber (4);
an inlet of the racemization chamber (1) is communicated with the impeller (5), an outlet of the racemization chamber (1) is communicated with the water outlet diffusion horn tube (2), and a guide vane hub (8) and a guide vane (7) fixed on the guide vane hub (8) are arranged in the racemization chamber (1); the rear water guide cone (3) is arranged on the inner wall of the top of the box culvert water outlet chamber (4), the water outlet diffusion horn tube (2) and part of the despin chamber (1) are arranged in the box culvert water outlet chamber (4), the water outlet of the water outlet diffusion horn tube (2) faces the inner wall of the top of the box culvert water outlet chamber (4), the rear water guide cone (3) extends into the water outlet diffusion horn tube (2), and the inlet of the rear water guide cone (3) along the water flow direction is connected and fixed with the guide vane hub (8); the box culvert water outlet chamber (4) is communicated with the water outlet flow channel (6);
the despinning chamber (1) adopts a circular truncated cone diffusion section, the diffusion angle is 3 degrees, the diameter of an inlet of the despinning chamber (1) is the same as that of the impeller (5), and the diameter of an outlet of the despinning chamber (1) is 1.05 times of that of the impeller (5);
the diameter of an inlet of the water outlet diffusion flared pipe (2) is 1.05 times of the diameter of the impeller (5), the diameter of an outlet of the water outlet diffusion flared pipe is 1.65 times of the diameter of the impeller (5), and the height of the water outlet diffusion flared pipe is 0.56 times of the diameter of the impeller (5);
the diameter of the rear water guide cone (3) along the water flow direction inlet is 0.3 time of the diameter of the impeller (5), the diameter of the rear water guide cone (3) along the water flow direction outlet is 1.72 times of the diameter of the impeller (5), and the height of the rear water guide cone (3) is 0.93 time of the diameter of the impeller (5).
2. The water outlet diffusion structure for the bidirectional vertical pump station according to claim 1, wherein: the number of the guide vanes (7) is 5.
3. The water outlet diffusion structure for the bidirectional vertical pump station according to claim 1, wherein: the despinning chamber (1), the rear water guide cone (3) and the box culvert water outlet chamber (4) are all made of metal.
4. The water outlet diffusion structure for the bidirectional vertical pump station according to claim 1, wherein: and the generatrix of the rear water guide cone (3) adopts a quarter of arc curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921063821.4U CN210290261U (en) | 2019-07-09 | 2019-07-09 | Two-way vertical pump station is with going out water diffusion barrier structure |
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|---|---|---|---|
| CN201921063821.4U CN210290261U (en) | 2019-07-09 | 2019-07-09 | Two-way vertical pump station is with going out water diffusion barrier structure |
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| CN210290261U true CN210290261U (en) | 2020-04-10 |
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| CN201921063821.4U Active CN210290261U (en) | 2019-07-09 | 2019-07-09 | Two-way vertical pump station is with going out water diffusion barrier structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664114A (en) * | 2020-06-23 | 2020-09-15 | 江苏大学镇江流体工程装备技术研究院 | Axial flow pump impeller and axial flow pump |
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2019
- 2019-07-09 CN CN201921063821.4U patent/CN210290261U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664114A (en) * | 2020-06-23 | 2020-09-15 | 江苏大学镇江流体工程装备技术研究院 | Axial flow pump impeller and axial flow pump |
| CN111664114B (en) * | 2020-06-23 | 2021-09-17 | 江苏大学镇江流体工程装备技术研究院 | Axial flow pump impeller and axial flow pump |
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