CN107269578A - The welding impeller and its welding method of a kind of double entry pump of test - Google Patents
The welding impeller and its welding method of a kind of double entry pump of test Download PDFInfo
- Publication number
- CN107269578A CN107269578A CN201710426535.9A CN201710426535A CN107269578A CN 107269578 A CN107269578 A CN 107269578A CN 201710426535 A CN201710426535 A CN 201710426535A CN 107269578 A CN107269578 A CN 107269578A
- Authority
- CN
- China
- Prior art keywords
- arc shaped
- welding
- shaped blade
- test
- impeller
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides the welding impeller and its welding method of a kind of double entry pump of test, it is related to double entry pump field, including back shroud and a plurality of arc shaped blade, mating groove similar to arc shaped blade shape and being placed with certain surplus is dug on the back shroud, the individual vanes are provided with the extension extended to the side of blade, and the cooperation channel opening is more than extension；The invention provides a kind of welding impeller of double entry pump of test and its welding method, can safely, firm arc shaped blade is welded on back shroud；The maximum temperature that can bear according to parameter sensors is 70 degree, and welds the high temperature produced considerably beyond this temperature, and the method that the present apparatus is used protects sensor to preserve from well, it is ensured that the continuation of follow-up study test.
Description
Technical field
The present invention relates to double entry pump field, and in particular to a kind of welding impeller of double entry pump of test and its welding side
Method.
Background technology
Double entry pump, because it has the features such as lift is high, flow is big, is obtained as a kind of important form of centrifugal pump in engineering
To extensive use.The impeller of this pump-type is actually combined by two back-to-back impellers, and the current flowed out from impeller converge
Enter in a spiral case.Double entry pump has the following feature：It works simultaneously equivalent to the single-suction (single-in let) impeller of two same diameters,
Same impeller outer diameter down-off, which can increase, to be twice；Opened in pump case level, inspection and maintenance is convenient, meanwhile, double entry pump is imported and exported
In the same direction and perpendicular to pump shaft, beneficial to the arrangement and installation of pump and water inlet pipe and water outlet pipe；The blade wheel structure of double entry pump is symmetrical, does not have
There is axial force, run more steady.
China proposes in Eleventh Five-Year Plan national science and technology supporting plan " high-power filling row's pump development and exploitation " key project
Develop Novel double-suction pump and new two class large powers high-lift double suction pump with ultra low pressure pulse characteristic；Develop large-scale vertical
Formula axial-flow pump device system and large diving axial-flow pump device system.Pump station device efficiency improves more than 8%, and energy unit consumption is average
Decline 0.78kWh/ktm.The double entry pump for carrying out testing research is divided into 2 parts, and first part is monoblock cast
Impeller (protect containing 6 pieces blades), the part does not do pressure fluctuation test, another part by front shroud, 4 pieces of blades of back shroud band and
Two individual vanes compositions, the part undertakes pressure fluctuation test, needs to be combined with forward and backward cover plate after blade processing is good, examine
Consider security reliability, employ the mode of welding.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of welding impeller of double entry pump of test and its welding side
Method, can safely, firm arc shaped blade is welded on back shroud.
To realize object above, the present invention is achieved by the following technical programs：A kind of weldering of the double entry pump of test
Connect and dig similar to arc shaped blade shape on impeller and its welding method, including back shroud and a plurality of arc shaped blade, the back shroud
And the mating groove of certain surplus is placed with, the individual vanes are provided with the extension extended to the side of blade, described to match somebody with somebody
Close channel opening and be more than extension.
Preferably, the sensor of several tests is installed at the working face of the arc shaped blade and the back side.
Preferably, the unilateral arc shaped blade number of the double-suction pump impeller for piece.
Preferably, comprise the following steps：
S1. the mating groove for the extension of arc shaped blade being inserted into cover plate is positioned；
S2. water-proofing treatment is carried out to sensor and its lead；
S3. arc shaped blade is placed in the container of water, sensor site is located at below the water surface, position to be welded is located at water
On face；
S4. arc shaped blade is welded；
S5. fluid sealant is applied to the position that camber line blade and cover plate join after welding is finished.
The invention provides a kind of welding impeller of double entry pump of test and its welding method, can safely, it is firm
Arc shaped blade is welded on back shroud；The maximum temperature that can bear according to parameter sensors is 70 degree, and welds what is produced
High temperature is considerably beyond this temperature, and the method that the present apparatus is used protects sensor to preserve from well, it is ensured that subsequently grind
Study carefully the continuation of test.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is structural representation of the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment：
As shown in Figure 1：The welding impeller and its welding method of a kind of double entry pump of test, including back shroud 1 and a plurality of
Mating groove 3 similar to the shape of arc shaped blade 2 and being placed with certain surplus, the independence are dug on arc shaped blade 2, the back shroud 1
Blade is provided with the extension 4 extended to the side of blade, and the opening of mating groove 3 is more than extension 4.
Preferably, the sensor of several tests is installed at the working face of the arc shaped blade 2 and the back side.
Preferably, the unilateral number of arc shaped blade 2 of the double-suction pump impeller is 6 pieces.
Preferably, comprise the following steps：
S1. the mating groove 3 for the extension 4 of arc shaped blade 2 being inserted into cover plate is positioned；
S2. water-proofing treatment is carried out to sensor and its lead；
S3. arc shaped blade 2 is placed in the container of water, sensor site be located at below the water surface, position to be welded is located at
On the water surface；
S4. arc shaped blade 2 is welded；
S5. fluid sealant is applied to the position that camber line blade and cover plate join after welding is finished.
The invention provides a kind of welding impeller of double entry pump of test and its welding method, can safely, it is firm
Arc shaped blade is welded on back shroud；The maximum temperature that can bear according to parameter sensors is 70 degree, and welds what is produced
High temperature is considerably beyond this temperature, and the method that the present apparatus is used protects sensor to preserve from well, it is ensured that subsequently grind
Study carefully the continuation of test.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. the welding impeller and its welding method of a kind of double entry pump of test, including back shroud (1) and a plurality of arc shaped blade
(2), it is characterised in that dig similar to arc shaped blade (2) shape on the back shroud (1) and be placed with the mating groove of certain surplus
(3), the individual vanes are provided with the extension (4) extended to the side of blade, and mating groove (3) opening, which is more than, prolongs
Extending portion point (4).
2. the welding impeller of the double entry pump of test as claimed in claim 1, it is characterised in that the arc shaped blade (2)
The sensor of several tests is installed at working face and the back side.
3. the welding impeller of the double entry pump of test as claimed in claim 1, it is characterised in that the double-suction pump impeller is unilateral
Arc shaped blade (2) number is 6 pieces.
4. the welding method of the double entry pump of test as claimed in claim 1, it is characterised in that comprise the following steps：
S1. the mating groove (3) for the extension (4) of arc shaped blade (2) being inserted into cover plate is positioned；
S2. water-proofing treatment is carried out to sensor and its lead；
S3. arc shaped blade (2) is placed in the container of water, sensor site is located at below the water surface, position to be welded is located at water
On face；
S4. arc shaped blade (2) is welded；
S5. fluid sealant is applied to the position that camber line blade and cover plate join after welding is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710426535.9A CN107269578A (en) | 2017-06-08 | 2017-06-08 | The welding impeller and its welding method of a kind of double entry pump of test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710426535.9A CN107269578A (en) | 2017-06-08 | 2017-06-08 | The welding impeller and its welding method of a kind of double entry pump of test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107269578A true CN107269578A (en) | 2017-10-20 |
Family
ID=60066082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710426535.9A Pending CN107269578A (en) | 2017-06-08 | 2017-06-08 | The welding impeller and its welding method of a kind of double entry pump of test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269578A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453513A (en) * | 2020-10-14 | 2021-03-09 | 沈阳透平机械股份有限公司 | Method for machining impeller blade of centrifugal compressor and impeller blade |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3740162A (en) * | 1969-12-04 | 1973-06-19 | Ahlstroem Oy | Centrifugal pump |
| CN203906378U (en) * | 2014-06-20 | 2014-10-29 | 利欧集团股份有限公司 | Impeller structure of pump |
| CN104879316A (en) * | 2015-05-14 | 2015-09-02 | 江苏大学 | Stainless steel pulse-welded centrifugal pump impeller and improved welding method thereof |
| CN204663968U (en) * | 2015-05-14 | 2015-09-23 | 江苏大学 | A kind of stainless steel drift weldering formula centrifugal pump impeller |
| CN105526192A (en) * | 2014-10-22 | 2016-04-27 | 江苏振华泵业制造有限公司 | Shrouded impeller wall connection structure for centrifugal pump |
-
2017
- 2017-06-08 CN CN201710426535.9A patent/CN107269578A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3740162A (en) * | 1969-12-04 | 1973-06-19 | Ahlstroem Oy | Centrifugal pump |
| CN203906378U (en) * | 2014-06-20 | 2014-10-29 | 利欧集团股份有限公司 | Impeller structure of pump |
| CN105526192A (en) * | 2014-10-22 | 2016-04-27 | 江苏振华泵业制造有限公司 | Shrouded impeller wall connection structure for centrifugal pump |
| CN104879316A (en) * | 2015-05-14 | 2015-09-02 | 江苏大学 | Stainless steel pulse-welded centrifugal pump impeller and improved welding method thereof |
| CN204663968U (en) * | 2015-05-14 | 2015-09-23 | 江苏大学 | A kind of stainless steel drift weldering formula centrifugal pump impeller |
Non-Patent Citations (1)
| Title |
|---|
| 唐敏蓉: "《CO2气体保护焊实训操作》", 31 October 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453513A (en) * | 2020-10-14 | 2021-03-09 | 沈阳透平机械股份有限公司 | Method for machining impeller blade of centrifugal compressor and impeller blade |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |