CN203867991U - Divergent water outlet bend for pump device - Google Patents

Divergent water outlet bend for pump device Download PDF

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Publication number
CN203867991U
CN203867991U CN201420065822.3U CN201420065822U CN203867991U CN 203867991 U CN203867991 U CN 203867991U CN 201420065822 U CN201420065822 U CN 201420065822U CN 203867991 U CN203867991 U CN 203867991U
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CN
China
Prior art keywords
bend pipe
flaring
pump
bend
divergent
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.)
Expired - Fee Related
Application number
CN201420065822.3U
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Chinese (zh)
Inventor
杨帆
刘超
成立
罗灿
谢荣盛
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Yangzhou University
Original Assignee
Yangzhou University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yangzhou University filed Critical Yangzhou University
Priority to CN201420065822.3U priority Critical patent/CN203867991U/en
Application granted granted Critical
Publication of CN203867991U publication Critical patent/CN203867991U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a divergent water outlet bend for a pump device and belongs to the technical field of water conservancy and hydropower engineering. The divergent water outlet bend for the pump device is composed of a rectification supporting part, a transverse separating plate and a divergent bend, wherein the divergent bend is a bend of which the radius of the round section is gradually increased, the transverse separating plate is fixed to the inner wall surface of the divergent bend, the rectification supporting part is arranged in an inlet end of the divergent bend, one end of the rectification supporting part is fixedly connected with the inner wall of the divergent bend, the other end of the rectification supporting part is fixedly connected with the outer wall surface of a rear water guide cone of the pump device, and the axis of the divergent bend is a variable-curvature curve. The transverse separating plate is a variable-curvature bent plate, and the variable curvature of the variable-curvature bent plate is the same as that of the axis of the divergent bend. The divergent water outlet bend for the pump device is formed by innovating a traditional water outlet bend, is convenient to design, machine, manufacture and install, and is convenient to implement in a large scale. Through the structure that the transverse separating plate and the rectification supporting plate are additionally arranged on the divergent bend, the hydraulic loss of the water outlet bend and a water outlet runner is further reduced, the operation stability of a unit is improved, and the hydraulic efficiency of the pump device is improved.

Description

A kind of pump-unit flaring Discharging bent-tube
Technical field
The utility model relates to a kind of water flowing out structure form of pump-unit diffuser, relates in particular to the water flowing out structure of non-volute type pump-unit, belongs to Hydraulic and Hydro-Power Engineering technical field.
Background technique
Pump-unit is made up of water inlet flow channel, impeller, diffuser, Discharging bent-tube and 5 flow passage components of outlet passage, the principal element that affects pump-unit hydraulic efficiency is the hydraulic loss of Discharging bent-tube and outlet passage, mainly because diffuser outlet current have circumferential speed, the circumferential direction kinetic energy that current have cannot be reclaimed better by Discharging bent-tube, even cause having in Discharging bent-tube the appearance of the bad fluidised forms such as whirlpool, and then can cause the hydraulic loss of Discharging bent-tube and outlet passage to increase.
At present, the Discharging bent-tube of pump-unit such as mostly is at the radius circular bend pipe, its water flow inside diffusion is often insufficient, the turbulent fluctuation of current is strong, for improving the hydraulic performance of pump-unit Discharging bent-tube, the exit velocity that improves outlet passage distributes, and reaches energy-saving and cost-reducing object, designs the novel flaring Discharging bent-tube of a kind of pump-unit and seems very necessary.
Model utility content
The purpose of this utility model is exactly to solve the problem that above-mentioned technology exists, in the time that moving, reclaims by pump-unit the inapparent problem of diffuser outlet residue circular rector for traditional Discharging bent-tube, a kind of pump-unit flaring Discharging bent-tube is efficiently provided, solve traditional Discharging bent-tube and reclaim the problem that diffuser outlet residue circular rector is low and internal flow state is more disorderly, taking pressure energy restitution coefficient and equivalent angle of flare as principle, traditional Discharging bent-tube is reformed to design, adopt the flaring bend pipe of variable curvature and change radius, to reach the hydraulic loss that further reduces Discharging bent-tube and outlet passage, improve pump-unit hydraulic efficiency.
The purpose of this utility model is to realize like this, a kind of pump-unit flaring Discharging bent-tube, it is characterized in that, be provided with flaring bend pipe, diaphragm and rectification supporting element, described flaring bend pipe is the circular cross section bend pipe of increased radius (circular cross section increases gradually) gradually, made by metallic material, the outlet end section radius of flaring bend pipe is 1.05 ~ 1.15 times of entrance point section radius, described diaphragm is the real plate of the equal thickness made of metallic material, its thickness is 2.0 ~ 5.0cm, length is 2/3 ~ 3/4 times of flaring bend pipe axis, diaphragm is fixed on the internal face of flaring bend pipe, connecting part is smooth, without projection, described rectification supporting element is the solid thin plate that metallic material is made, its section configuration is to be suitable for the mobile streamline of fluid or two pointed cone ellipse, rectification supporting element is arranged in flaring bend pipe entrance point, the inwall of one end of rectification supporting element and flaring bend pipe is fixed, the rear water guide cone outer wall of the other end and pump-unit is fixed, the axis of described flaring bend pipe is variable curvature curve.
Described rectification supporting element is made up of two groups of four solid thin plates, is cross-shaped, and wherein one group of solid thin plate is corresponding with the position of diaphragm.
Described diaphragm is variable curvature bent plate, and variable curvature bent plate is identical with the variable curvature of described flaring bend pipe axis.
The utility model for traditional Discharging bent-tube in the time that pump-unit moves, Discharging bent-tube reclaims the problem that diffuser outlet residue circular rector is low and internal flow state is more disorderly, taking pressure energy restitution coefficient and equivalent angle of flare as principle, traditional Discharging bent-tube is reformed to design, adopt flaring bend pipe to add the structure of diaphragm and rectification supporting element, reach the hydraulic loss that further reduces Discharging bent-tube and outlet passage, improve pump-unit hydraulic efficiency.The import of flaring bend pipe increases gradually to the section of outlet, and the axis of flaring bend pipe is variable curvature curve.Diaphragm is fixed on the internal face of flaring bend pipe, and diaphragm is variable curvature bent plate, and variable curvature bent plate is identical with the variable curvature of flaring bend pipe axis.Rectification supporting element is arranged in flaring bend pipe entrance point, and the inwall of one end of rectification supporting element and flaring bend pipe is fixed, and the rear water guide cone outer wall of the other end and pump-unit is fixed.This flaring Discharging bent-tube is applicable in all types of vertical pump device and horizontal pump apparatus structure, further reclaim the object of diffuser outlet residue circular rector, reduce the hydraulic loss of water flowing out structure, reach improve Discharging bent-tube hydraulic efficiency and outlet passage go out stream object more uniformly, increase unit operation stability.Design of the present utility model, processing and fabricating are easy for installation, are convenient to extensive enforcement.
Brief description of the drawings
Fig. 1 is facade structures schematic diagram of the present utility model.
Fig. 2 is the section B-B structural representation in Fig. 1.
Fig. 3 is the end-face structure schematic diagram (section C-C) of outlet end of the present utility model.
Fig. 4 is the D-D cross-sectional view in Fig. 1.
Fig. 5 is the E-E cross-sectional view in Fig. 4.
Fig. 6 is diaphragm structure schematic diagram of the present utility model.
Fig. 7 is the use view that the utility model is applied to vertical pump device.
In figure: 1 rectification supporting element; 2 diaphragms; 3 flaring bend pipes; 4 rear water guide cones; 5 diffusers; 6 outlet passages.
Embodiment
A kind of pump-unit flaring Discharging bent-tube, is made up of rectification supporting element 1, diaphragm 2 and flaring bend pipe 3.Flaring bend pipe is the circular cross section bend pipe of increased radius gradually, made by metallic material, the outlet end section radius of flaring bend pipe is 1.05 ~ 1.15 times of entrance point section radius, described diaphragm is the real plate of the equal thickness made of metallic material, its thickness is 2.0 ~ 5.0cm, length is 2/3 ~ 3/4 times of flaring bend pipe axis, diaphragm is fixed on the internal face of flaring bend pipe, connecting part is smooth, without projection, described rectification supporting element is the solid thin plate that metallic material is made, its section configuration is to be suitable for the mobile streamline of fluid or two pointed cone ellipse, rectification supporting element is arranged in flaring bend pipe entrance point, the inwall of one end of rectification supporting element and flaring bend pipe is fixed, the rear water guide cone outer wall of the other end and pump-unit is fixed, the axis of described flaring bend pipe is variable curvature curve.Rectification supporting element is made up of two groups of four solid thin plates, is cross-shaped, and wherein one group of solid thin plate is corresponding with the position of diaphragm.Diaphragm is variable curvature bent plate, and variable curvature bent plate is identical with the variable curvature of described flaring bend pipe axis.
The entrance point section of flaring bend pipe 3 is corresponding with the size of the outlet end section of the diffuser 5 of pump-unit; The outlet end section of flaring bend pipe 3 is corresponding with the entrance point cross-section size of outlet passage 6, guarantees the phase joining place smooth transition of flaring bend pipe 3 and diffuser 5, outlet passage 6 simultaneously, and flaring bend pipe 3 adopts metal to make.Rectification supporting element 1 adopts metallic material to be transported to after processing separately on-the-spotly to install fixingly, and its form of fracture adopts streamline etc. to be applicable to the shape line of characteristic of fluid, two sections of vertical current respectively with inwall and the rear water guide cone 4 outer wall concrete mutuallies of flaring bend pipe 3.Diaphragm 2 adopts metallic material to process separately, and its axis is identical with the axis of flaring bend pipe 3, and it is fixed on the inwall of flaring bend pipe 3.After flaring bend pipe 3 completes, diaphragm 2 is fixed on to flaring bend pipe 3 inwalls, after its entirety and diffuser 5 are installed, then carries out the installation of rectification supporting element 1.

Claims (3)

1. a pump-unit flaring Discharging bent-tube, it is characterized in that, be provided with flaring bend pipe, diaphragm and rectification supporting element, described flaring bend pipe is the circular cross section bend pipe of increased radius gradually, made by metallic material, the outlet end section radius of flaring bend pipe is 1.05 ~ 1.15 times of entrance point section radius, described diaphragm is the real plate of the equal thickness made of metallic material, its thickness is 2.0 ~ 5.0cm, length is 2/3 ~ 3/4 times of flaring bend pipe axis, diaphragm is fixed on the internal face of flaring bend pipe, connecting part is smooth, without projection, described rectification supporting element is the solid thin plate that metallic material is made, its section configuration is to be suitable for the mobile streamline of fluid or two pointed cone ellipse, rectification supporting element is arranged in flaring bend pipe entrance point, the inwall of one end of rectification supporting element and flaring bend pipe is fixed, the rear water guide cone outer wall of the other end and pump-unit is fixed, the axis of described flaring bend pipe is variable curvature curve.
2. a kind of pump-unit flaring Discharging bent-tube according to claim 1, is characterized in that, described rectification supporting element is made up of two groups of four solid thin plates, is cross-shaped, and wherein one group of solid thin plate is corresponding with the position of diaphragm.
3. a kind of pump-unit flaring Discharging bent-tube according to claim 1, is characterized in that, described diaphragm is variable curvature bent plate, and variable curvature bent plate is identical with the variable curvature of described flaring bend pipe axis.
CN201420065822.3U 2014-02-14 2014-02-14 Divergent water outlet bend for pump device Expired - Fee Related CN203867991U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420065822.3U CN203867991U (en) 2014-02-14 2014-02-14 Divergent water outlet bend for pump device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420065822.3U CN203867991U (en) 2014-02-14 2014-02-14 Divergent water outlet bend for pump device

Publications (1)

Publication Number Publication Date
CN203867991U true CN203867991U (en) 2014-10-08

Family

ID=51648950

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420065822.3U Expired - Fee Related CN203867991U (en) 2014-02-14 2014-02-14 Divergent water outlet bend for pump device

Country Status (1)

Country Link
CN (1) CN203867991U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595239A (en) * 2015-01-21 2015-05-06 扬州大学 Series of inclined water outlet flow passages with excellent hydraulic performance and application method thereof
CN109707661A (en) * 2019-01-08 2019-05-03 扬州大学 A kind of pump installation of band abnormal shape water guide cone

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595239A (en) * 2015-01-21 2015-05-06 扬州大学 Series of inclined water outlet flow passages with excellent hydraulic performance and application method thereof
CN104595239B (en) * 2015-01-21 2015-11-25 扬州大学 The serial inclined outlet passage of hydraulic performance excellence and application process thereof
CN109707661A (en) * 2019-01-08 2019-05-03 扬州大学 A kind of pump installation of band abnormal shape water guide cone

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141008

Termination date: 20170214

CF01 Termination of patent right due to non-payment of annual fee