CN208024567U - A kind of vertical multi-stage condenser pump of setting low speed inducer - Google Patents
A kind of vertical multi-stage condenser pump of setting low speed inducer Download PDFInfo
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- CN208024567U CN208024567U CN201820445905.3U CN201820445905U CN208024567U CN 208024567 U CN208024567 U CN 208024567U CN 201820445905 U CN201820445905 U CN 201820445905U CN 208024567 U CN208024567 U CN 208024567U
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- low speed
- stage
- impeller
- pump
- speed inducer
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Abstract
The utility model discloses a kind of vertical multi-stage condenser pumps of setting low speed inducer, including connecting section, water exit end and inlet segment, the connecting section, water exit end and inlet segment are installed successively from top to bottom by axis, it is provided with stage casing between the water exit end and inlet segment, multi-stage impeller is installed in the stage casing, it is provided with guide vane above the impeller, the guide vane is installed on by guide blade sleeve on axis, it is provided with sealing ring below the impeller, the one stage impeller for being wherein located at bottommost is first stage impeller, the sealing ring of the first stage impeller corresponds to chopped-off head sealing ring, it is provided with low speed inducer below the first stage impeller, induction wheel case is installed outside the low speed inducer.The utility model, by increasing low speed inducer in first stage impeller import, can effectively reduce the necessary NPSH of water pump, the requirement for enabling the utility model to meet user to condenser pump on the basis of MODEL VERTICAL MULTISTAGE PUMP.
Description
Technical field
The utility model is related to condense pump configuration.
Background technology
Domestic existing condenser pump at present, has the following disadvantages：
1, horizontal single-stage condensation pump lift is relatively low, lift is such as improved in same flow, water pump specific revolution is too small, and efficiency is too
It is low, and pump vane casting is difficult；
2, cartridge type multi-stage condensing pump configuration is complicated；Because using spatial guide blade, axial length to increase, installation and maintenance are difficult；Water
Pump need to use special hollow shaft motor, cost higher without axial balance mechanism.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of vertical multi-stage condenser pump of setting low speed inducer, this reality
With novel on the basis of MODEL VERTICAL MULTISTAGE PUMP, by increasing low speed inducer in first stage impeller import, water pump can be effectively reduced
Necessary NPSH, the requirement for enabling the utility model to meet user to condenser pump.
A kind of vertical multi-stage condenser pump of setting low speed inducer, including connecting section, water exit end and inlet segment, the connection
Section, water exit end and inlet segment are installed successively from top to bottom by axis, and the connecting section includes the shaft coupling being fixed on axis, axis
It holds, axle sleeve and machine envelope, bearing back of the body cap, bearing gland is provided with above the bearing, the Bearing outer is bearing body, the axis
It holding and seal and sealed letter is installed below body, the sealed letter is installed on above water exit end,
It is provided with stage casing between the water exit end and inlet segment, multi-stage impeller is installed in the stage casing, on the impeller
Side is provided with guide vane, and the guide vane is installed on by guide blade sleeve on axis, and sealing ring is provided with below the impeller, wherein positioned at most
The one stage impeller of bottom is first stage impeller, and the sealing ring of the first stage impeller corresponds to chopped-off head sealing ring, under the first stage impeller
Side is provided with low speed inducer, and induction wheel case is equipped with outside the low speed inducer.
Further, the water exit end is provided with balancing drum, and the balancing drum is installed on the downside of sealed letter, keeps this pump included
Balance mechanism, can active balance water pump axial force.
Further, it is auxiliarily fixed between the water exit end and inlet segment by being set to the turnbuckle on the outside of the pump housing.
Further, the inlet segment includes pedestal, and the axis passes through water lubriucated bearing end cap, water-lubricating axle sleeve and roundlet
Nut is installed on above the pedestal
Further, the multi-stage impeller is provided with level Four.
Further, the diameter of the low speed inducer is sequentially reduced from bottom to top, because pump rotary speed is low, to ensure water
Pump discharge need to increase induction wheel diameter.But limited by water pump first stage impeller inlet diameter, it can not be lured by maximum gauge to increase
Guide wheel diameter changes inducer taper in the design thus, keeps inducer input end diameter maximum, meets pump capacity requirement.
Further, the liquid flow path direction of the inlet segment is vertical with the axis of low speed inducer, is flowed in liquid
Cheng Zhong, with the reduction of induction wheel diameter, the water inlet area of vertical axis also constantly reduces, and flow velocity increases, and leads to flow resistance
Increase, be unfavorable for improving cavitation performance, increases practical area of passage by changing fluid flow angle degree in the design thus, make liquid stream
Speed remains unchanged, and minimizes drag losses, improves pump cavitation performance.
The advantageous effect that the utility model is brought has：
1, this pump increases low speed inducer before first stage impeller, effectively reduces necessary NPSH, improves cavitation performance, makes
Used time can reduce fitting depth；
2, this pump uses vertical structure, makes full use of space, reduces mounting area；
3, this pump uses multilevel hierarchy, changes lift by different series, more flexible to meet user to lift not
With requirement；
4, this pump single-stage lift reduces, and makes the specific revolution of impeller in higher efficiency range, effectively increases pump efficiency, reduces
Energy consumption；
5, this pump carries balance mechanism, can the axial force of active balance water pump cost is reduced using vertical standard electromotor.
Description of the drawings
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail,
Attached drawing 1 is the Standard figure of the utility model；
Attached drawing 2 is the low speed inducer structural schematic diagram of the utility model；
Attached drawing 3 is the low speed induction wheel construction upward view of the utility model.
Specific implementation mode
With reference to attached drawing 1, a kind of vertical multi-stage condenser pump of setting low speed inducer, including connection is claimed in the utility model
Section 1, water exit end 13 and inlet segment 20 are connect, connecting section 1, water exit end 13 and inlet segment 20 are installed successively from top to bottom by axis 21.
Wherein, connecting section 1 includes the shaft coupling 5 being fixed on axis 21, bearing 3, axle sleeve 7 and machine envelope 8, and 3 top of bearing is set
It is equipped with bearing back of the body cap 6, bearing gland 2,3 outside of bearing is bearing body 4, and 4 lower section of bearing body is equipped with seal 10 and sealed letter
11, sealed letter 11 is installed on 13 top of water exit end.Balancing drum 9 is provided in water exit end 13, balancing drum 9 is installed under sealed letter 11
Side so that this pump carries balance mechanism, can active balance water pump axial force.
It is auxiliarily fixed between water exit end 13 and inlet segment 20 by being set to the turnbuckle 12 on the outside of the pump housing.Inlet segment 20
Including pedestal 27, above-mentioned axis 21 is installed on pedestal by water lubriucated bearing end cap 26, water-lubricating axle sleeve 24 and small round nut 25
27 tops.
Stage casing 18 is provided between water exit end 13 and inlet segment 20.Level Four impeller 22 is installed, on impeller 22 in stage casing 18
Side is provided with guide vane 16, and guide vane 16 is installed on by guide blade sleeve 14 on axis 21, and 22 lower section of impeller is provided with sealing ring 15, wherein position
It is first stage impeller in the one stage impeller 22 of bottommost, the sealing ring 15 of first stage impeller corresponds to chopped-off head sealing ring 17, first stage impeller
Lower section is provided with low speed inducer 23, and induction wheel case 19 is equipped with outside low speed inducer 23.
With reference to attached drawing 2 and attached drawing 3, the diameter of low speed inducer 23 is sequentially reduced from bottom to top, because pump rotary speed is low, is
Ensure pump capacity, induction wheel diameter need to be increased.But limited by water pump first stage impeller inlet diameter, it can not come by maximum gauge
Increase induction wheel diameter, change inducer taper in the design thus, keeps inducer input end diameter maximum, meet pump capacity
It is required that.
Meanwhile the liquid flow path direction of inlet segment 20 is vertical with the axis of low speed inducer 23.During liquid flows, with
The reduction of wheel diameter, the water inlet area of vertical axis is induced also constantly to reduce, flow velocity increases, and flow resistance is caused to increase, unfavorable
In improving cavitation performance, increases practical area of passage by changing fluid flow angle degree in the design thus, flow stream velocity is made to keep not
Become, minimize drag losses, improves pump cavitation performance.
The utility model, can by increasing low speed inducer 23 in first stage impeller import on the basis of MODEL VERTICAL MULTISTAGE PUMP
Effectively reduce the necessary NPSH of water pump, the requirement for enabling the utility model to meet user to condenser pump, i.e., more than low cavitation
Amount, big flow, high lift.By changing water pump series, facilitates change pump head, be suitable for user and different lifts are wanted
It asks.
Specific embodiment of the utility model is described in detail above, but content is only the preferable of the utility model
Embodiment should not be considered as limiting the scope of the present invention.It is made according to the scope of application of this utility model equal
Deng variation and improvement etc., should all still belong within the patent covering scope of the utility model.
Claims (7)
1. a kind of vertical multi-stage condenser pump of setting low speed inducer, including connecting section, water exit end and inlet segment, the connection
Section, water exit end and inlet segment are installed successively from top to bottom by axis, and the connecting section includes the shaft coupling being fixed on axis, axis
It holds, axle sleeve and machine envelope, bearing back of the body cap, bearing gland is provided with above the bearing, the Bearing outer is bearing body, the axis
It holds and seal and sealed letter is installed below body, the sealed letter is installed on above water exit end, it is characterised in that：
It is provided with stage casing between the water exit end and inlet segment, multi-stage impeller is installed in the stage casing, is set above the impeller
It is equipped with guide vane, the guide vane is installed on by guide blade sleeve on axis, and sealing ring is provided with below the impeller, wherein being located at bottommost
One stage impeller be first stage impeller, the sealing ring of the first stage impeller corresponds to chopped-off head sealing ring, is set below the first stage impeller
It is equipped with low speed inducer, induction wheel case is installed outside the low speed inducer.
2. a kind of vertical multi-stage condenser pump of setting low speed inducer according to claim 1, it is characterised in that：It is described go out
Water section is provided with balancing drum, and the balancing drum is installed on the downside of sealed letter.
3. a kind of vertical multi-stage condenser pump of setting low speed inducer according to claim 2, it is characterised in that：It is described go out
It is auxiliarily fixed between water section and inlet segment by being set to the turnbuckle on the outside of the pump housing.
4. a kind of vertical multi-stage condenser pump of setting low speed inducer according to claim 1 or 3, it is characterised in that：Institute
It includes pedestal to state inlet segment, and the axis is installed on the pedestal by water lubriucated bearing end cap, water-lubricating axle sleeve and small round nut
Top.
5. a kind of vertical multi-stage condenser pump of setting low speed inducer according to claim 1, it is characterised in that：It is described more
Grade impeller is provided with level Four.
6. a kind of vertical multi-stage condenser pump of setting low speed inducer according to claim 1 or 5, it is characterised in that：Institute
The diameter for stating low speed inducer is sequentially reduced from bottom to top, to ensure pump capacity.
7. a kind of vertical multi-stage condenser pump of setting low speed inducer according to claim 6, it is characterised in that：It is described into
The liquid flow path direction of water section is vertical with the axis of low speed inducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820445905.3U CN208024567U (en) | 2018-03-31 | 2018-03-31 | A kind of vertical multi-stage condenser pump of setting low speed inducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820445905.3U CN208024567U (en) | 2018-03-31 | 2018-03-31 | A kind of vertical multi-stage condenser pump of setting low speed inducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208024567U true CN208024567U (en) | 2018-10-30 |
Family
ID=63909958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820445905.3U Active CN208024567U (en) | 2018-03-31 | 2018-03-31 | A kind of vertical multi-stage condenser pump of setting low speed inducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208024567U (en) |
-
2018
- 2018-03-31 CN CN201820445905.3U patent/CN208024567U/en active Active
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