CN111649003A - Self-balancing multi-stage pump composite pipe - Google Patents
Self-balancing multi-stage pump composite pipe Download PDFInfo
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- CN111649003A CN111649003A CN202010520761.5A CN202010520761A CN111649003A CN 111649003 A CN111649003 A CN 111649003A CN 202010520761 A CN202010520761 A CN 202010520761A CN 111649003 A CN111649003 A CN 111649003A
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- straight pipe
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- elbow
- variable cross
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of self-balancing multistage pumps, and discloses a self-balancing multistage pump composite pipe.
Description
Technical Field
The invention belongs to the technical field of self-balancing multistage pumps, and particularly relates to a composite pipe of a self-balancing multistage pump.
Background
The self-balancing multistage centrifugal pump consists of a stator component (the stator component consists of parts such as a water inlet section, a middle section, a positive guide vane, a reverse guide vane, a water outlet section, a secondary water inlet section, a front bearing body, a rear bearing body, a transition pipe and the like) and a rotor component (the rotor component consists of a main shaft, a positive impeller, a reverse impeller, a shaft sleeve, a bearing retaining sleeve, a middle throttling shaft sleeve, a rear throttling shaft sleeve, a shaft coupling and the like). The prime motor drives the water pump to rotate, medium is sucked from the water inlet section, flows into the secondary water inlet section through the pressurizing of the positive impeller group, flows into the secondary water inlet section through the transition pipe, is pressurized again through the reverse impeller group, and flows out of the water outlet section, so that the medium is continuously conveyed.
The self-balancing multistage pump transition pipe has two structures at present, one is a round transition pipe which consists of two transition elbows with 90-degree round sections, two round flanges and a section of round metal pipe; the circular transition pipe and the low-pressure water outlet of the water outlet section are sealed by a circular metal sealing gasket, so that under special working conditions of high temperature, high pressure and the like, good sealing performance can be ensured, leakage is not easy to occur, the standardization degree is high, the cost is low, and the hydraulic loss of the transition pipe is small; however, the pump has large radial size, a non-compact structure and less attractive appearance. The other is a square transition pipe which consists of two transition elbows with 90-degree square cross sections and flanges and a section of square metal pipe; the square transition pipe and the low-pressure water outlet of the water outlet section are sealed by the square rubber sealing gasket, so that under the working conditions of high temperature, high pressure and the like, the sealing difficulty is high, leakage is easy to occur, the requirement on the rough illumination of the surface of a sealing surface of a part is very high, the standardization degree is low, the cost is high, and the hydraulic loss of the transition pipe is large; but the radial size of the pump is small and the structure is compact.
Two kinds of existing transition pipes respectively have the problem that the structure is not compact or leakage easily occurs.
Disclosure of Invention
The invention discloses a self-balancing multistage pump composite pipe, and aims to solve the problem that the existing transition pipe is not compact in structure or is easy to leak.
The invention is realized in this way, the compound pipe of the self-balancing multistage pump, characterized by that: comprises a straight pipe, an elbow, a variable cross-section transition section and a flange plate;
the cross section of the straight pipe is square;
the section of the elbow is circular; the two elbows are respectively positioned at the two ends of the straight pipe;
one end of the variable cross-section transition section is square, and the other end of the variable cross-section transition section is circular; the variable cross-section transition section is provided with two sections which are respectively positioned between the straight pipe and the two elbows;
the number of the flange plates is two, and the two flange plates are respectively arranged at one ends of the two elbows far away from the straight pipe.
Further, the side length of the straight pipe is equal to the outer diameter of the elbow.
Further, the bend has a bending angle of 90 °.
Furthermore, the two elbows are in the same direction at the ends far away from the straight pipe.
Furthermore, the straight pipe and the variable cross-section transition section and the elbow and the variable cross-section transition section are welded.
Furthermore, the size of the square end of the variable cross-section transition section is consistent with the size of the cross section of the straight pipe; the size of the circular end of the variable cross-section transition section is consistent with the size of the cross section of the elbow.
Still further, the flange is circular.
Furthermore, the straight pipe, the elbow and the flange are all made of stainless steel.
The invention has the beneficial effects that: through the combination of the straight pipe with the square section and the elbow with the circular section, the invention not only solves the problems of the circular transition pipe that the structure is not compact, the radial size of the pump is large and the appearance is not beautiful, but also reduces the hydraulic loss of the water outlet section, the secondary water inlet section and the square transition pipe, and avoids the problems of the square transition pipe that the sealing difficulty is large and the leakage is easy to occur.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a conventional round transition pipe;
fig. 3 is a schematic structural diagram of a conventional square transition pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the self-balancing multi-stage pump composite pipe comprises a straight pipe 1, an elbow 2, a variable cross-section transition section 3 and a flange plate 4;
the cross section of the straight pipe 1 is square;
the section of the elbow 2 is circular; the two elbows 2 are respectively positioned at the two ends of the straight pipe 1;
one end of the variable cross-section transition section 3 is square, and the other end of the variable cross-section transition section is circular; the variable cross-section transition section 3 is provided with two sections which are respectively positioned between the straight pipe 1 and the two elbows 2;
the number of the flange plates 4 is two, and the two flange plates are respectively arranged at one ends of the two elbows 2 far away from the straight pipe 1.
The side length of the straight pipe 1 is equal to the outer diameter of the elbow 2, so that the cross section conversion is facilitated, and the connection stability is improved.
The bend angle of the elbow 2 is 90 degrees, and the two elbows 2 are far away from the same orientation of one end of the straight pipe 1, so that the elbows are conveniently connected with an external structure.
The straight pipe 1 and the variable cross-section transition section 3, the elbow 2 and the variable cross-section transition section 3 are welded, the connection mode is stable and reliable, and leakage can be effectively avoided.
The size of the square end of the variable cross-section transition section 3 is consistent with that of the cross section of the straight pipe 1, so that welding is facilitated, and leakage is avoided; the size of the circular end of the variable cross-section transition section 3 is consistent with the size of the cross section of the elbow 2, so that welding is facilitated, and leakage is avoided.
The flange plate 4 is circular and is consistent with an external flange plate, so that the installation is convenient.
The straight pipe 1, the elbow 2 and the flange 3 are all made of stainless steel materials, and the materials are stable in property and good in engineering performance.
When the elbow joint is used, the flange plates 3 on the two elbows 2 are respectively connected with the external flange plate through the external bolts, and a medium enters the internal space of the elbow joint from one elbow 2 and flows out of the other elbow 2 after passing through the straight pipe 1.
The invention has the beneficial effects that: through the combination of the straight pipe 1 with the square section and the elbow 2 with the circular section, the invention solves the problems of incompact structure, large radial size of the pump and unattractive appearance of the circular transition pipe, reduces the hydraulic loss of the water outlet section, the secondary water inlet section and the square transition pipe, and avoids the problems of large sealing difficulty and easy leakage of the square transition pipe.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. Compound pipe of self-balancing multistage pump, its characterized in that: comprises a straight pipe (1), an elbow (2), a variable cross-section transition section (3) and a flange plate (4);
the cross section of the straight pipe (1) is square;
the section of the elbow (2) is circular; the two elbows (2) are respectively positioned at the two ends of the straight pipe (1);
one end of the variable cross-section transition section (3) is square, and the other end of the variable cross-section transition section is circular; the variable cross-section transition section (3) is provided with two sections which are respectively positioned between the straight pipe (1) and the two elbows (2);
the number of the flange plates (4) is two, and the two flange plates are respectively arranged at one end of the elbow (2) far away from the straight pipe (1).
2. The self-balancing multi-stage pump composite tube of claim 1, wherein: the side length of the straight pipe (1) is equal to the outer diameter of the elbow (2).
3. The self-balancing multi-stage pump composite tube of claim 1, wherein: the bending angle of the elbow (2) is 90 degrees.
4. The self-balancing multi-stage pump composite tube of claim 1, wherein: the direction of one end of each of the two elbows (2) far away from the straight pipe (1) is the same.
5. The self-balancing multi-stage pump composite tube of claim 1, wherein: the straight pipe (1) and the variable cross-section transition section (3) as well as the elbow (2) and the variable cross-section transition section (3) are welded.
6. The self-balancing multi-stage pump composite tube of claim 1, wherein: the size of the square end of the variable cross-section transition section (3) is consistent with that of the cross section of the straight pipe (1); the size of the circular end of the variable cross-section transition section (3) is consistent with the size of the cross section of the elbow (2).
7. The self-balancing multi-stage pump composite tube of claim 1, wherein: the flange plate (4) is circular.
8. The self-balancing multi-stage pump composite tube of claim 1, wherein: the straight pipe (1), the elbow (2) and the flange plate (3) are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520761.5A CN111649003A (en) | 2020-06-09 | 2020-06-09 | Self-balancing multi-stage pump composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520761.5A CN111649003A (en) | 2020-06-09 | 2020-06-09 | Self-balancing multi-stage pump composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111649003A true CN111649003A (en) | 2020-09-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010520761.5A Pending CN111649003A (en) | 2020-06-09 | 2020-06-09 | Self-balancing multi-stage pump composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111649003A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070205044A1 (en) * | 2006-02-07 | 2007-09-06 | Bae Seong W | Silencer |
| CN201321988Y (en) * | 2008-12-02 | 2009-10-07 | 上海凯泉泵业（集团）有限公司 | Self-balance multistage centrifugal pump |
| CN203730370U (en) * | 2013-12-30 | 2014-07-23 | 上海连成（集团）有限公司 | Balancing water return pipe component |
| CN204239321U (en) * | 2014-10-27 | 2015-04-01 | 长沙佳能通用泵业有限公司 | With the self-balance type multistage centrifugal pump of axial-force testing device |
| CN105570200A (en) * | 2014-11-06 | 2016-05-11 | 际华三五零六纺织服装有限公司 | Noise reduction silencer for air outlet of dust removal fan |
| CN206354414U (en) * | 2016-12-11 | 2017-07-28 | 中南大学 | Flue-cured tobacco horizontal hot air furnace combustion fan heat-insulating protective device |
| CN207989403U (en) * | 2018-03-14 | 2018-10-19 | 西安热工研究院有限公司 | A kind of fairing for preventing axial flow blower from air-flow-structure-acoustics coupled resonance occurs |
| CN109322831A (en) * | 2018-11-29 | 2019-02-12 | 长沙佳能通用泵业有限公司 | A kind of double outlet self-balancing multi-stage pumps of four volute chambers |
| CN109519392A (en) * | 2018-12-12 | 2019-03-26 | 厦门市百龙喷泉科技开发有限公司 | A kind of fountain efficiency air deflector |
| CN210106816U (en) * | 2019-05-16 | 2020-02-21 | 宁波铭扬不锈钢管业有限公司 | Reducing water pipe joint |
-
2020
- 2020-06-09 CN CN202010520761.5A patent/CN111649003A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070205044A1 (en) * | 2006-02-07 | 2007-09-06 | Bae Seong W | Silencer |
| CN201321988Y (en) * | 2008-12-02 | 2009-10-07 | 上海凯泉泵业（集团）有限公司 | Self-balance multistage centrifugal pump |
| CN203730370U (en) * | 2013-12-30 | 2014-07-23 | 上海连成（集团）有限公司 | Balancing water return pipe component |
| CN204239321U (en) * | 2014-10-27 | 2015-04-01 | 长沙佳能通用泵业有限公司 | With the self-balance type multistage centrifugal pump of axial-force testing device |
| CN105570200A (en) * | 2014-11-06 | 2016-05-11 | 际华三五零六纺织服装有限公司 | Noise reduction silencer for air outlet of dust removal fan |
| CN206354414U (en) * | 2016-12-11 | 2017-07-28 | 中南大学 | Flue-cured tobacco horizontal hot air furnace combustion fan heat-insulating protective device |
| CN207989403U (en) * | 2018-03-14 | 2018-10-19 | 西安热工研究院有限公司 | A kind of fairing for preventing axial flow blower from air-flow-structure-acoustics coupled resonance occurs |
| CN109322831A (en) * | 2018-11-29 | 2019-02-12 | 长沙佳能通用泵业有限公司 | A kind of double outlet self-balancing multi-stage pumps of four volute chambers |
| CN109519392A (en) * | 2018-12-12 | 2019-03-26 | 厦门市百龙喷泉科技开发有限公司 | A kind of fountain efficiency air deflector |
| CN210106816U (en) * | 2019-05-16 | 2020-02-21 | 宁波铭扬不锈钢管业有限公司 | Reducing water pipe joint |
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Application publication date: 20200911 |