WO1997024532A1 - Ensemble pompe - Google Patents

Ensemble pompe Download PDF

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Publication number
WO1997024532A1
WO1997024532A1 PCT/JP1997/000002 JP9700002W WO9724532A1 WO 1997024532 A1 WO1997024532 A1 WO 1997024532A1 JP 9700002 W JP9700002 W JP 9700002W WO 9724532 A1 WO9724532 A1 WO 9724532A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
bracket
frequency converter
motor
pump assembly
Prior art date
Application number
PCT/JP1997/000002
Other languages
English (en)
Japanese (ja)
Inventor
Makoto Kobayashi
Masakazu Yamamoto
Yoshio Miyake
Kaoru Yagi
Keita Uwai
Yoshiaki Miyazaki
Katsuji Iijima
Junya Kawabata
Original Assignee
Ebara Corporation
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 Ebara Corporation filed Critical Ebara Corporation
Priority to BR9706924A priority Critical patent/BR9706924A/pt
Priority to AU12105/97A priority patent/AU706634B2/en
Publication of WO1997024532A1 publication Critical patent/WO1997024532A1/fr

Links

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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H02K5/1285—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs of the submersible type

Definitions

  • the present invention relates to a pump assembly, and more particularly to a pump assembly on which a frequency converter is mounted.
  • the heat sink for cooling the inverter is not required by attaching the inverter to the outer surface of the outer cylinder of the all-circulation pump.
  • the size of the motor is reduced by increasing the frequency of the electric power supplied to the motor, and the size of the motor is reduced by increasing the speed of the pump. We are trying to reduce the size.
  • the lower case (indicated by reference numeral 48 in Fig. 2) that accommodates the invar evening is It must have a special shape that matches the curvature of the outer cylinder. This means that an inverter with the same electrical characteristics can be mounted on an outer cylinder with a different curvature. This is inconvenient when attaching.
  • the pump shown in Fig. 1 of JP-A-7-189996 is a two-stage pump having two impellers. However, in some circumstances, a single-stage pump having a larger impeller outer diameter is used. It is necessary to shorten the axial dimension of the pump as a pump.
  • the outer diameter of the single-stage impeller is approximately 1.4 times the outer diameter of the impeller disclosed in Japanese Patent Application Laid-Open No. 7-189996. Therefore, in order to store the impeller in the outer cylinder, it is necessary to increase the diameter of the outer cylinder. In other words, several types of specially shaped lower cases are required to accommodate the Invera sunset.
  • the present invention has been made in view of the above circumstances, and can easily cope with a change in curvature of an outer cylinder constituting an outer surface of a motor pump, and can assemble a frequency converter assembly independently. It is an object of the present invention to provide a pump assembly that can easily attach a pump to a miniaturized motor pump. 97/24532
  • the present invention provides a motor pump having a space for guiding a liquid to be handled around the outer periphery of a motor, a bracket mounted on an outer surface of the motor pump, and a bracket mounted on the bracket. And a frequency converter assembly.
  • a bracket is provided between the frequency converter assembly and the pump outer cylinder.
  • the bracket functions to adjust the mounting dimensions and is smaller than the base of the frequency converter assembly. Since the brackets are small parts, even if there are many types, the productivity will not be impaired.
  • the frequency converter assembly of the present invention includes a base mounted on a bracket, a cover mounted on the base, and a frequency converter main body surrounded by the base and the cover.
  • the frequency converter assembly can be assembled independently.
  • the cover and base do not need to be disassembled in principle, except for the case of independent maintenance of the frequency converter itself. That is, when the frequency converter is attached to and detached from the pump, the highly integrated circuit is not exposed to the outside. This configuration is effective because highly integrated circuits and electrical substrates are generally vulnerable to dust.
  • the bracket is provided with a hole for electrically connecting the module to the main body of the frequency converter.
  • the bracket, base and cover are each made of a good thermal conductor, particularly an aluminum alloy. Since this type of frequency converter is mainly cooled by the pump handling liquid, the use of aluminum alloy is preferred. Also, by using metal as the material, radiation noise from the frequency converter can be shielded. In particular, since the bracket is made of metal, harmonic noise on the secondary side of the frequency converter can be shielded. In one embodiment of the present invention, a hole is formed in the bracket to allow the coolant to pass therethrough. Usually, the frequency converter is cooled by the pump handling liquid.
  • the frequency converter such c to be cooled failure, it may be provided with holes for cooling liquid passage in the bracket, the externally et separate coolant By passing the frequency converter, the frequency converter works without any trouble.
  • a heat transfer improving material is interposed in the gap between the motor pump and the bracket, the gap between the bracket and the base, or the gap between the base and the cover. If there is a gap between the members, air with poor heat transfer will intervene there, resulting in poor cooling. Therefore, a heat transfer improving material such as liquid silicon is interposed between the members.
  • a seal member for maintaining airtightness is provided between the motor pump and the bracket, between the bracket and the base, and between the base and the cover.
  • the present invention provides a motor frame outer shell provided on an outer peripheral portion of a motor stator, an outer cylinder forming an annular space between the motor frame outer shell outer peripheral surface, and a liquid handled in the annular space.
  • a pump unit provided at an axial end of the outer cylinder and provided with fixing means for fixing another member, wherein a frequency converter assembly is fixed to an outer peripheral portion of the outer cylinder. A part of the frequency converter assembly is further extended in the axial direction than fixing means provided at an axial end of the outer cylinder.
  • fixing means for connecting the suction casing, the discharge casing and the like are provided at the end of the outer cylinder constituting the outer surface of the motor bomb. For this reason, conventional frequency converters do not work if the pump becomes too small. There was a problem that the mounting space was lost. In order to avoid the restriction on the mounting of the frequency converter by the fixing means, the frequency converter assembly is installed in a so-called raised floor type to avoid interference with the fixing means.
  • FIG. 1 is a sectional view showing an embodiment of a pump assembly according to the present invention
  • FIG. 2 is a sectional view taken along the line II-II of FIG. 1
  • FIG. 3 is a pump assembly according to the present invention.
  • FIG. 4 is a plan view showing a bracket in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the all circumferential flow type motor pump shown in the present embodiment includes a pump casing 1, a canister housed in the pump casing 1, and an end of a main shaft 7 of this canister 6. And an impeller 8 fixed to the section.
  • the pump casing 1 includes a pump casing outer cylinder 2, a suction casing 3 connected to both ends of the pump casing outer cylinder 2 by flanges 61, 62, respectively, and a discharge casing 4. I have.
  • the flanges 6 1 and 6 2 constitute fixing means for fixing other members such as the suction casing 3 and the discharge casing 4 to the outer cylinder 2.
  • the outer casing 2, the suction casing 3, and the discharge casing 4 of the pump casing are formed of a sheet metal made of stainless steel or the like.
  • a bracket 45 is attached to the outer surface of the outer cylinder 2.
  • the frequency converter assembly 50 is mounted on the bracket 45.
  • the frequency converter assembly 50 includes a base 46 mounted on the bracket 45, a cover 47 mounted on the base 46, a base 46 and a cover 47. Therefore, the frequency converter main body 48 is enclosed.
  • the bracket 45 has a hole 45 a for electrically connecting the can motor 6 and the frequency converter body 48.
  • the bracket 45, the base 46, and the cover 47 are each formed of a heat conductor made of an aluminum alloy.
  • the bracket 45 has a coolant passage hole 45 b through which coolant for cooling the frequency converter body 48 is formed.
  • Kandomomo 6 has a stator 13, a motor frame outer shell 14 provided on the outer periphery of the stator 13, and a motor frame outer shell 14.
  • the motor frame side plates 15 and 16 are welded and fixed to the motor frame side plates 15 and 16 and the cans 17 are fitted to the inner peripheral portion of the stator 13 and welded and fixed to the motor frame side plates 15 and 16. ing.
  • the rotor 18 rotatably accommodated in the stator 13 is shrink-fitted and fixed to the main shaft 7.
  • An annular space (flow path) 40 is formed between the outer frame 14 and the outer cylinder 2 of the motor frame.
  • a guide member 11 for guiding the fluid from the outside in the radial direction to the inside in the radial direction is held on the frame side plate 16 of the can module 6.
  • An inner casing 12 for accommodating the impeller 8 is fixed to the guide member 11.
  • a seal member 13 is interposed on the outer periphery of the guide member 11.
  • a liner ring 51 is provided at the inner end of the guide member 11, and the liner ring 51 slides on the front surface of the impeller 8 (on the suction mouth side).
  • the inner casing 12 has a substantially dome shape, and has a shape that covers the shaft end of the main shaft 7 of the pump 6.
  • the casing 12 has a guide device 12 a formed of a guide vane or a volume for guiding the fluid discharged from the impeller 8.
  • the inner casing 12 has an air vent hole 12b at the tip.
  • the lead wire housing 20 is welded to the outer frame
  • the lead wire is pulled out from the coil inside the outer frame 14 of the motor frame via the lead wire housing 20 and the holes 45 a of the bracket 45 and the lead of the base 46 are fixed. It is connected to the base 46 and the frequency converter body 48 in the force bar 47 via the wire extraction hole 46a.
  • the lead wires of the frequency converter body 48 are connected to the power cable 63 within the base 46 and the cover 47.
  • the outer cylinder 2 is formed with a hole 2a, and the lead wire housing 20 is inserted into the hole 2a.
  • the bearing bracket 21 is provided with a radial bearing 22 and a fixed-side thrust bearing 23.
  • the end face of the radial bearing 22 is also provided with a function as a fixed-side thrust sliding member.
  • a rotating-side thrust bearing 24 and a rotating-side thrust bearing 25, which are rotating-side thrust sliding members, are provided on both sides of the radial bearing 22 and the fixed-side thrust bearing 23, a rotating-side thrust bearing 24 and a rotating-side thrust bearing 25, which are rotating-side thrust sliding members, are provided.
  • the rotating thrust bearing 24 is fixed to a thrust disk 26, and the thrust disk 26 is fixed to the main shaft 7 via a key.
  • the rotating thrust bearing 25 is fixed to a thrust disc 27, and this thrust disc 27
  • Reference numeral 27 is fixed to the main shaft 7 via a key.
  • the bearing bracket 21 is inserted through an o-ring 29 made of an elastic material into a hollow provided on the module frame side plate 16.
  • the bearing bracket 21 is in contact with the motor frame side plate 16 via a gasket 30 made of a conductive material.
  • reference numeral 31 denotes a sleeve that forms a sliding part with the radial bearing 22.
  • the bearing bracket 32 is provided with a radial bearing 33.
  • a radial bearing 33 In the figure
  • Reference numeral 34 denotes a sleeve forming a sliding portion with the radial bearing 33.
  • the sleeve 34 contacts the washer 35, and the washer 35 is provided at the end of the main shaft 7. And fixed by double nuts 36.
  • the bearing bracket 32 is inserted into an inlay provided on the motor frame side plate 15 via a ring 37 made of an elastic material. The bearing bracket 32 is in contact with the motor frame side plate 15.
  • a stay 43 is welded to the outer frame 14 of the motor frame, and the stay 43 and the outer cylinder 2 are fixed by welding.
  • the number of revolutions of the CAN mode 6 is set to 400 rpm or more by the frequency converter body 48.
  • the operation of the all-circumferential pump shown in FIG. 1 will be briefly described.
  • the fluid sucked from the suction nozzle 3a connected to the suction casing 3 passes through the suction casing 3 and passes through the outer cylinder 2. And flows into an annular flow path 40 formed between the outer frame 14 and the motor frame 14 of the candies 6, and is guided by the guide member 11 through the flow path 40 to be impeller 8. Guided inside.
  • the fluid discharged from the impeller 8 is discharged from the discharge nozzle 4a connected to the discharge casing 4 via the guide device 12a.
  • a bracket 45 is provided between the frequency converter assembly 50 and the pump casing outer cylinder 2.
  • the bracket 45 functions to adjust the connection dimensions, and is set to be smaller than the pace 46 of the frequency converter assembly 50. Since the brackets 45 are small components, their productivity will not be impaired even if their types are increased.
  • the frequency converter body 48 is housed in the base 46 and the cover 47, and the frequency converter assembly 50 is assembled independently.
  • the bracket 45 and the frequency converter assembly 50 are fixed. This fixing is performed by tightening bolts 55 from the bracket 45 side to the base 46 of the frequency converter assembly 50 as shown in FIG. Can be implemented externally.
  • the notch 45c of the bracket 45 is fitted to the fixing member 53, and the nut 54 is tightened to the bolt 52.
  • the bracket 45 is fixed to the outer cylinder 2 of the motor pump.
  • the frequency converter assembly 50 is surrounded by the base 46 attached to the bracket 45, the cover 47 attached to the base 46, the base 46 and the cover 47.
  • the frequency converter assembly 50 can be assembled independently.
  • the fixing of the bracket 45 and the frequency converter assembly 50 can be performed outside the frequency converter assembly 50.
  • the bracket 45 and the outer cylinder 2 of the motor pump can be fixed.
  • the cover 47 and the base 46 do not need to be disassembled in principle, except for the case where the frequency converter body 48 is solely maintained. That is, when the frequency converter is attached to and detached from the pump, the highly integrated circuit is not exposed to the outside. This configuration is effective because highly integrated circuits and electrical substrates are generally vulnerable to dust and dust.
  • the bracket 45 is provided with a hole 45a in order to electrically connect the CAN module 6 and the frequency converter body 48 electrically.
  • the bracket 45, the base 46, and the cover 47 are each made of a good thermal conductor, particularly an aluminum alloy. Since this type of frequency converter is mainly cooled by the liquid handled by the pump, the use of an aluminum alloy is preferred. In addition, by using metal as a material, radiation noise from the frequency converter can be shielded. In particular, since the bracket is made of metal, harmonic noise on the secondary side of the frequency converter can be shielded.
  • a coolant passage hole 45 b for passing the coolant through the bracket 45 is formed.
  • the frequency converter is cooled by the pump handling liquid.
  • the frequency converter can be cooled sufficiently by providing a hole 45b for coolant passage in the bracket 45 and letting another coolant pass from outside. Works without hindrance.
  • the heat transfer improving material is inserted into the gap between the outer cylinder 2 of the motor pump and the bracket 45, the gap between the bracket 45 and the base 46, or the gap between the base 46 and the cover 47. Is interposed. If there is a gap between the members, poor heat transfer will be interposed between them, resulting in poor cooling. Therefore, a heat transfer improving material such as liquid silicon is interposed between the members.
  • a heat transfer improving material such as liquid silicon is interposed between the members.
  • airtightness is provided between the outer cylinder 2 of the motor pump and the bracket 45, between the bracket 45 and the base 46, and between the base 46 and the power bar 47.
  • the holding sealing members 56, 57, 58 are provided. As a result, there is no danger that water vapor will enter the case accommodating the frequency converter body 48, and this water vapor will be cooled and dewed by the pump handling liquid, thereby damaging the frequency converter.
  • the outer frame 14 of the motor frame provided on the outer periphery of the stator 13 of the canned motor 6 and the outer peripheral surface of the outer frame 14 of the motor frame are provided.
  • the frequency converter assembly 50 is fixed, and a part of the frequency converter assembly 50 is extended in the axial direction from fixing means (61, 62) provided at the axial end of the outer cylinder 2. It has the following configuration.
  • fixing means including flanges 61 and 62 for connecting the suction casing 3 and the discharge casing 4 are provided at the end of the pump casing outer cylinder 2.
  • the conventional frequency converter has a problem that if the pump is too small, there is no space for installation.
  • the frequency converter assembly 50 has a so-called raised floor structure to avoid interference with the fixing means comprising the flanges 61, 62. ing. As a result, a part of the frequency converter assembly 50 can be extended in the axial direction more than the fixing means.
  • each of the inverter, the motor, and the pump can be reduced in size, and an extremely small pump assembly can be configured as a whole.
  • the frequency converter assembly can be assembled independently, and the frequency converter assembly is downsized. Can be easily attached to the overnight pump.
  • the present invention applies both pressure and velocity energy to the liquid by rotation of the impeller,
  • a pump assembly that converts the velocity energy into pressure energy as efficiently as possible while passing through the casing and sends the liquid from a low place to a high place. It is capable of pumping various liquids including water. It can be used in the chemical industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un ensemble pompe servant à forcer la circulation de divers liquides, y compris l'eau. Cet ensemble est constitué d'une pompe à moteur présentant un intervalle (40) autour du stator (13) d'un moteur protégé (6) de façon à conduire le liquide à pomper, d'une patte d'attache (45) montée sur une surface externe de la pompe à moteur, et d'un ensemble convertisseur de fréquence (50) fixé sur la patte d'attache (45).
PCT/JP1997/000002 1995-12-28 1997-01-06 Ensemble pompe WO1997024532A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR9706924A BR9706924A (pt) 1995-12-28 1997-01-06 Montagem de bomba
AU12105/97A AU706634B2 (en) 1995-12-28 1997-01-06 Pump assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP35328095 1995-12-28
JP7/353280 1995-12-28

Publications (1)

Publication Number Publication Date
WO1997024532A1 true WO1997024532A1 (fr) 1997-07-10

Family

ID=18429771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/000002 WO1997024532A1 (fr) 1995-12-28 1997-01-06 Ensemble pompe

Country Status (5)

Country Link
CN (1) CN1094178C (fr)
AU (1) AU706634B2 (fr)
BR (1) BR9706924A (fr)
RU (1) RU2166132C2 (fr)
WO (1) WO1997024532A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001017095A1 (fr) * 1999-08-31 2001-03-08 Ebara Corporation Bati de moteur, moteur utilisant ledit bati et motopompe
JP2003074490A (ja) * 2001-08-31 2003-03-12 Tsurumi Mfg Co Ltd 水中ポンプ用インバ−タユニット
JP2010216413A (ja) * 2009-03-18 2010-09-30 Shimadzu Corp ターボ分子ポンプ

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0709128A2 (pt) * 2006-03-24 2011-06-28 Siemens Ag unidade compressora
RU2409770C2 (ru) * 2006-03-24 2011-01-20 Сименс Акциенгезелльшафт Компрессорный блок и способ его монтажа
RU171808U1 (ru) * 2016-10-27 2017-06-16 Открытое акционерное общество "Омское машиностроительное конструкторское бюро" Система топливопитания и регулирования газотурбинного двигателя
RU2717484C1 (ru) * 2019-07-24 2020-03-23 Валерий Эдуардович Габдрахимов Устройство для охлаждения электрических установок для насосных агрегатов, установленных в перекачивающих станциях

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03160199A (ja) * 1989-11-17 1991-07-10 Mitsubishi Electric Corp ポンプ装置
JPH0532789U (ja) * 1991-10-01 1993-04-30 日機装株式会社 キヤンドモータポンプ
JPH07109988A (ja) * 1993-10-13 1995-04-25 Ebara Corp 全周流型キャンドモータポンプ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2714449B2 (ja) * 1989-08-08 1998-02-16 株式会社日立製作所 可変速ポンプシステム
JPH03278993A (ja) * 1990-03-28 1991-12-10 Toppan Printing Co Ltd 磁気記録方式

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03160199A (ja) * 1989-11-17 1991-07-10 Mitsubishi Electric Corp ポンプ装置
JPH0532789U (ja) * 1991-10-01 1993-04-30 日機装株式会社 キヤンドモータポンプ
JPH07109988A (ja) * 1993-10-13 1995-04-25 Ebara Corp 全周流型キャンドモータポンプ

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001017095A1 (fr) * 1999-08-31 2001-03-08 Ebara Corporation Bati de moteur, moteur utilisant ledit bati et motopompe
EP1211784A1 (fr) * 1999-08-31 2002-06-05 Ebara Corporation Bati de moteur, moteur utilisant ledit bati et motopompe
EP1211784A4 (fr) * 1999-08-31 2003-05-28 Ebara Corp Bati de moteur, moteur utilisant ledit bati et motopompe
JP2003074490A (ja) * 2001-08-31 2003-03-12 Tsurumi Mfg Co Ltd 水中ポンプ用インバ−タユニット
JP2010216413A (ja) * 2009-03-18 2010-09-30 Shimadzu Corp ターボ分子ポンプ
US8613604B2 (en) 2009-03-18 2013-12-24 Shimadzu Corporation Turbomolecular pump

Also Published As

Publication number Publication date
AU706634B2 (en) 1999-06-17
AU1210597A (en) 1997-07-28
CN1206451A (zh) 1999-01-27
RU2166132C2 (ru) 2001-04-27
BR9706924A (pt) 1999-07-20
CN1094178C (zh) 2002-11-13

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