CN101089403A - BJL multi-channel modified line special air conditioner energy-saving centrifugal pump - Google Patents

BJL multi-channel modified line special air conditioner energy-saving centrifugal pump Download PDF

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Publication number
CN101089403A
CN101089403A CN 200710129573 CN200710129573A CN101089403A CN 101089403 A CN101089403 A CN 101089403A CN 200710129573 CN200710129573 CN 200710129573 CN 200710129573 A CN200710129573 A CN 200710129573A CN 101089403 A CN101089403 A CN 101089403A
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CN
China
Prior art keywords
hydroecium
centrifugal pump
runner
pump
sucks
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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.)
Pending
Application number
CN 200710129573
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Chinese (zh)
Inventor
袁力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanfang Special Pump Industry Co Ltd Hainan
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Nanfang Special Pump Industry Co Ltd Hainan
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Publication date
Application filed by Nanfang Special Pump Industry Co Ltd Hainan filed Critical Nanfang Special Pump Industry Co Ltd Hainan
Priority to CN 200710129573 priority Critical patent/CN101089403A/en
Publication of CN101089403A publication Critical patent/CN101089403A/en
Pending legal-status Critical Current

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Abstract

The present invention discloses a BJL multichannel modified line special-purpose air-conditioning energy-saving centrifugal pump. Said centrifugal pump includes the following several portions: motor, blade wheel, water-discharging chamber, water-entering chamber, straight taper tube flow channel, conical water-dividing cone, curved flow-guiding rib and flow deflector, etc. said invention can raise cavitation resistance of vertical centrifugal pump, and can raise hydraulic efficiency of pump and its volume efficiency.

Description

BJL multiple tracks modified line special air conditioner energy-saving centrifugal pump
Technical field
The present invention relates to a kind of vertical centrifugal pump.
Background technique
Development along with society, vertical centrifugal pump is applied to the every field of national economy more and more widely, the performance requirement of vertical centrifugal pump also improves day by day, the requirement that has has big as far as possible flow, the hope that has has high as far as possible lift and efficient, or the combination of two kinds of forms, secondly, the material of vertical centrifugal pump, structure and size propose new requirement, as the saving of material, the compactedness of structure, relatively uniform property of size or the like, once more, along with the development of power engine and transmission, promoted the efficient of vertical centrifugal pump and the raising of rotating speed, the unfailing performance of vertical centrifugal pump is also had higher requirement, in a word, the design of vertical centrifugal pump will be raised the efficiency, energy saving, improve the working life of maintainability energy and prolongation vertical centrifugal pump.
In recent years, academic and the theoretical relation of noticing between hydraulic parameters and the performance parameter of vertical centrifugal pump, liquid flow field in the pump under some performance condition of vertical centrifugal pump is tested and is calculated, but but ignored of the influence of the runner geometric properties of vertical centrifugal pump to hydraulic parameters, just at present, the structural type of the centrifugal pump of all vertical structures is all identical with suction hydroecium flow passage structure, all be directly to suck liquid from a water outlet that sucks hydroecium by a vertical impeller, the suction hydroecium flow passage structure of centrifugal pump is annular or elbow-shaped structure simultaneously, water conservancy diversion and the rectification that is complementary through liquid flowing water force parameter any and vertical centrifugal pump inside do not handled, thereby cause the relevant hydraulic parameters of flow of fluid of vertical centrifugal pump inside and thermal parameter can not with the shape of each flow component of vertical centrifugal pump, the geometric parameter of size is complementary, make it mutual restriction between each parameter, influence each other, especially on the runner of vertical centrifugal pump, influencing each other between each hydraulic parameters between the downstream, make liquid form turbulent flow and various irregular flowing states after the hydroecium import flows into the suction hydroecium from sucking, cause the waterpower exercise performance of flow of fluid also very not good, thereby generation cavitation phenomenons, thereby cause the hydraulic performance of vertical centrifugal pump to reduce, noise and vibration significantly can take place when work, the operating reliability of vertical centrifugal pump can be descended, shorten working life, while hydraulic efficiency and disc friction losses decrease in efficiency, reduce total efficiency, increase operation energy consumption.
Summary of the invention
For the structural type that overcomes existing vertical centrifugal pump and suction chamber and runner make the big and hydraulic efficiency of the cavitation of vertical centrifugal pump, the situation that disc friction losses efficient is low, the vertical centrifugal pump combination property is not good, the invention provides a kind of structural type and suction hydroecium and runner of novel vertical centrifugal pump.The structural type of this vertical centrifugal pump and suction hydroecium and runner can not only improve the anti-cavitation performance of vertical centrifugal pump, hydraulic efficiency, volumetric efficiency and the disc friction losses efficient of vertical centrifugal pump have also been improved simultaneously, can make the vertical centrifugal NPSH reduce 1-3 rice like this, simultaneously, the total efficiency of vertical centrifugal pump also improves 5-10 percentage point.Thereby, promoted the combination property of vertical centrifugal pump.
The technical solution adopted in the present invention is: a kind of vertical centrifugal pump, comprise motor, impeller and water-supplying chamber, it is characterized in that the anterior inlet segment that sucks hydroecium sucks the hydroecium runner for the front and back semicircle increases progressively spiral bending tube reducing shape, flow passage entry is low, back hydroecium runner height, be beneficial to liquid fluid balanced acceleration in the suction chamber runner, thereby reduce the cavitation of pump, improve the efficient of pump; Be provided with a right cone pipe runner at the rear portion that sucks hydroecium in the inlet of impeller, can increase the preceding liquid fluid relative velocity of impeller inlet, the pressure of eliminating herein falls, thereby improved the anti-cavitation performance of vertical centrifugal pump, simultaneously, the inlet diameter that reduces impeller is to reduce the leakage rate of inlet, thereby improved the volumetric efficiency of pump, be connected by the copper choma between right cone pipe runner and the impeller, the annular edge of copper choma is provided with groove, impeller is provided with and the corresponding projection of copper choma groove, can reduce the interior liquid fluid of pump by the amount of flow that flows between low pressure area between the zone of high pressure; Be provided with the conical water awl that divides in the central authorities that suck hydroecium, the liquid fluid is carried out branch water and water conservancy diversion; Be complementary and mutual corresponding arc guide rib, guide plate with each hydraulic parameters of liquid fluid in the pump in the inlet segment runner setting that sucks the hydroecium front portion, the liquid fluid is carried out water conservancy diversion and rectification, to reduce the disturbance of liquid fluid, in the right cone pipe runner that sucks the hydroecium rear portion symmetrical vertical guide plate is set, to eliminate the rotation of impeller eye place liquid fluid.When the liquid fluid is sucking in the hydroecium runner, successively after various water conservancy diversion gusset, the conical branch water that are complementary with liquid fluid water force parameter are bored water conservancy diversion, rectification and branch water, all the state that quickens surely with steady weighing apparatus enters the impeller of vertical centrifugal pump, reduce cavitation in the pump, reduced liquid fluid in the pump by the amount of flow of zone of high pressure to low pressure area, thereby improved volumetric efficiency and hydraulic efficiency, reduced mechanical friction loss, reached the total efficiency of raising vertical centrifugal pump and the purpose of high-cavitation-resistance energy.
In order to carry out water conservancy diversion or rectification to the liquid fluid better, reduce the disturbance of liquid fluid, at the inlet segment runner that sucks the hydroecium front portion spiral modified line guide rib is set.
BJL multiple tracks modified line special air conditioner energy-saving centrifugal pump provided by the present invention has solved at present existing vertical centrifugal pump and because of structural type and the geometric parameter and the factor that the liquid flowing water force parameter between the runner upstream and downstream is not complementary that suck shape, the size structure form of hydroecium passage component cause vertical centrifugal pump the difficult problem that serious cavitation and pump efficiency decline, energy consumption increase has taken place, improve the anti-cavitation performance of vertical centrifugal pump effectively, also improved hydraulic efficiency, volumetric efficiency and the disc friction losses efficient of pump simultaneously.
Description of drawings
Fig. 1 is the vertical section structure schematic representation of embodiment of the invention BJL multiple tracks modified line special air conditioner energy-saving centrifugal pump.
Fig. 2 is the cross-sectional view of Fig. 1 embodiment along the A-A line.
Fig. 3 is the cross-sectional view of copper choma of the present invention.
Embodiment
BJL multiple tracks modified line special air conditioner energy-saving centrifugal pump provided by the present invention comprises motor 2, impeller 3 and water-supplying chamber 1, the anterior inlet segment 6 that sucks hydroecium sucks the hydroecium runner for the front and back semicircle increases progressively spiral bending tube reducing shape, flow passage entry is low, back hydroecium runner height, form one 3 °~8 ° the gradient, be beneficial to liquid fluid balanced acceleration in the suction chamber runner, thereby reduce the cavitation of pump, improve the efficient of pump; Be provided with a right cone pipe runner 5 at the rear portion that sucks hydroecium in the inlet of impeller 3, be used to increase the preceding liquid fluid relative velocity of impeller inlet, the pressure of eliminating herein falls, thereby improved the anti-cavitation performance of vertical centrifugal pump, simultaneously, the inlet diameter that reduces impeller 3 is to reduce the leakage rate of inlet, thereby improved the volumetric efficiency of pump, be connected by copper choma 4 between right cone pipe runner 5 and the impeller 3, the limit of copper choma 4 is provided with groove 41, impeller 3 is provided with and the corresponding projection of copper choma groove, can reduce the interior liquid fluid of pump by the amount of flow that flows between low pressure area between the zone of high pressure; Be provided with the conical water awl 9 that divides in the central authorities that suck hydroecium, can carry out branch water and water conservancy diversion the liquid fluid; Be complementary and mutual corresponding arc guide rib 7, guide plate 8 with each hydraulic parameters of liquid fluid in the pump in the inlet segment runner setting that sucks the hydroecium front portion, the liquid fluid is carried out water conservancy diversion and rectification, to reduce the disturbance of liquid fluid, in the right cone pipe runner 5 that sucks the hydroecium rear portion symmetrical vertical guide plate 10 is set, to eliminate the rotation of impeller 3 ingress liquid fluids.When the liquid fluid is sucking in the hydroecium runner, successively after various arc guide rib 7, guide plate 8, the conical branch water that are complementary with liquid fluid water force parameter are bored 9 water conservancy diversion, rectification and branch water, all the state that quickens surely with steady weighing apparatus enters impeller, reduce interior cavitation of pump and liquid fluid by the amount of flow of zone of high pressure to low pressure area, thereby volumetric efficiency and hydraulic efficiency have been improved, reduce mechanical friction loss, reached the total efficiency of raising vertical centrifugal pump and the purpose of high-cavitation-resistance energy.
In order to carry out water conservancy diversion or rectification to the liquid fluid better, reduce the disturbance of liquid fluid, at the inlet segment runner that sucks the hydroecium front portion spiral modified line guide rib 11 is set.

Claims (3)

1, a kind of BJL multiple tracks modified line special air conditioner energy-saving centrifugal pump, comprise motor [2], impeller [3] and water-supplying chamber [1], it is characterized in that: the anterior inlet segment [6] of the suction hydroecium of pump sucks the hydroecium runner for the front and back semicircle increases progressively spiral bending tube reducing shape, and flow passage entry is low, back hydroecium runner height; Be provided with a right cone pipe runner [5] at the rear portion that sucks hydroecium in the inlet of impeller [3], be connected by copper choma [4] between right cone pipe runner [5] and the impeller [3], the limit of copper choma [4] is provided with groove [41], and impeller [3] is provided with and the corresponding projection of copper choma groove [41]; Be provided with the conical water awl [9] that divides in the central authorities that suck hydroecium, be complementary and mutual corresponding arc guide rib [7], guide plate [8] with each hydraulic parameters of liquid fluid in the pump in the inlet segment runner setting that sucks the hydroecium front portion; The vertical guide plate [10] of symmetry is set in the right cone pipe runner [5] that sucks the hydroecium rear portion.
2, BJL multiple tracks modified line special air conditioner energy-saving centrifugal pump according to claim 1 is characterized in that: it is low that described front and back semicircle increases progressively the ingress of spiral bending tube reducing shape suction hydroecium runner, back hydroecium runner height, and the gradient is 3 °~8 °.
3, BJL multiple tracks modified line special air conditioner energy-saving centrifugal pump according to claim 1 is characterized in that: at the inlet segment runner that sucks the hydroecium front portion spiral modified line guide rib [11] is set.
CN 200710129573 2007-07-05 2007-07-05 BJL multi-channel modified line special air conditioner energy-saving centrifugal pump Pending CN101089403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200710129573 CN101089403A (en) 2007-07-05 2007-07-05 BJL multi-channel modified line special air conditioner energy-saving centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710129573 CN101089403A (en) 2007-07-05 2007-07-05 BJL multi-channel modified line special air conditioner energy-saving centrifugal pump

Publications (1)

Publication Number Publication Date
CN101089403A true CN101089403A (en) 2007-12-19

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101852218A (en) * 2010-04-16 2010-10-06 江门市汉宇电器有限公司 Drainage pump cover
CN102410256A (en) * 2011-12-15 2012-04-11 西安航天泵业有限公司 Annular water absorbing chamber of vertical pipeline pump
CN102454637A (en) * 2010-10-20 2012-05-16 李正奇 Water inlet section for high-temperature and high-pressure centrifugal pump
CN101743405B (en) * 2008-02-29 2012-08-22 三菱重工业株式会社 Centrifugal compressor
CN102927055A (en) * 2012-11-29 2013-02-13 无锡艾比德泵业有限公司 Vertical centrifugal pump
CN103758787A (en) * 2014-01-07 2014-04-30 钱向阳 Pump inflow runner
CN104929952A (en) * 2015-06-10 2015-09-23 合肥凯泉电机电泵有限公司 Efficient single-stage pump
CN105179318A (en) * 2015-09-25 2015-12-23 无锡环宇精密铸造有限公司 Pump body casting
CN109707669A (en) * 2018-11-29 2019-05-03 长沙佳能通用泵业有限公司 A kind of double feed inlet, the efficient inlet segment of double helical form

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101743405B (en) * 2008-02-29 2012-08-22 三菱重工业株式会社 Centrifugal compressor
CN101852218A (en) * 2010-04-16 2010-10-06 江门市汉宇电器有限公司 Drainage pump cover
CN102454637A (en) * 2010-10-20 2012-05-16 李正奇 Water inlet section for high-temperature and high-pressure centrifugal pump
CN102410256A (en) * 2011-12-15 2012-04-11 西安航天泵业有限公司 Annular water absorbing chamber of vertical pipeline pump
CN102927055A (en) * 2012-11-29 2013-02-13 无锡艾比德泵业有限公司 Vertical centrifugal pump
CN103758787A (en) * 2014-01-07 2014-04-30 钱向阳 Pump inflow runner
CN103758787B (en) * 2014-01-07 2017-01-04 钱向阳 A kind of pump inflow runner
CN104929952A (en) * 2015-06-10 2015-09-23 合肥凯泉电机电泵有限公司 Efficient single-stage pump
CN105179318A (en) * 2015-09-25 2015-12-23 无锡环宇精密铸造有限公司 Pump body casting
CN109707669A (en) * 2018-11-29 2019-05-03 长沙佳能通用泵业有限公司 A kind of double feed inlet, the efficient inlet segment of double helical form

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