CN213298290U - Integral core-pulling type double-shell multistage centrifugal pump - Google Patents
Integral core-pulling type double-shell multistage centrifugal pump Download PDFInfo
- Publication number
- CN213298290U CN213298290U CN202021779156.1U CN202021779156U CN213298290U CN 213298290 U CN213298290 U CN 213298290U CN 202021779156 U CN202021779156 U CN 202021779156U CN 213298290 U CN213298290 U CN 213298290U
- Authority
- CN
- China
- Prior art keywords
- pump
- centrifugal pump
- shell
- fixed
- rotor
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An integral core-pulling type double-shell multistage centrifugal pump relates to a centrifugal pump, and comprises a rotor part, a bearing body part, a sealing box body, a positioning ring, a suction section, a shell sealing ring, a guide vane, a middle section, a barrel body part, a rear pump cover part, a pump cover connecting bolt assembly, a tail cover part and a mechanical seal; the inner core of the centrifugal pump is of a sectional structure, the outer shell of the centrifugal pump is of a cylindrical structure, a suction pipe and a discharge pipe of the pump are both vertically and upwardly arranged, and the supporting mode of the pump is that the central line is horizontally supported; the shell sealing ring is embedded into the middle section of the piece and fixed by spot welding; after the dynamic balance test is carried out on the rotor part, the guide vanes and the middle section are sequentially connected into the rotor in series step by step and fixed by connecting screws; the suction section and the rear pump cover part are positioned through the seam allowance and fixed by the connecting screw, and are integrated with the rotor part. The radial split double-shell multistage centrifugal pump is particularly suitable for multistage centrifugal pumps with multiple stages and complex pipeline connection.
Description
Technical Field
The utility model relates to a centrifugal pump especially relates to a whole formula of loosing core double-shell multistage centrifugal pump.
Background
The horizontal high-pressure multistage centrifugal pump is mainly used for petroleum product refining, petrochemical engineering processes, oil field water injection, gathering and transportation engineering, boiler water supply and other chemical industries. The existing commonly-used double-shell multistage centrifugal pump is of a rotor and inner shell core-pulling structure, components such as a front bearing body and a front pump cover cannot be integrally disassembled, and two sides are required to be positioned and radial gaps are required to be adjusted when the centrifugal pump is installed. Further improvements can be made to the existing structures according to the state of the art.
Disclosure of Invention
An object of the utility model is to provide a whole formula of loosing core double-shell multistage centrifugal pump, this centrifugal pump remove the drum external, and all the other spare parts carry out whole dismouting as an integrated inner core, realize simple, swift maintenance and assembly. Meanwhile, the mounting and centering gaps of the impeller and the bearing bush can be adjusted when the integrated inner core is assembled, so that the disassembly and inspection time and space are saved, and the overhaul process is accelerated.
The utility model aims at realizing through the following technical scheme:
an integral core-pulling type double-shell multistage centrifugal pump comprises a rotor component, a bearing component, a sealing box body, a positioning ring, a suction section, a shell sealing ring, a guide vane, a middle section, a barrel component, a rear pump cover component, a pump cover connecting bolt component, a tail cover component and a mechanical seal; the inner core of the centrifugal pump is of a sectional structure, the outer shell of the centrifugal pump is of a cylindrical structure, a suction pipe and a discharge pipe of the pump are both vertically and upwardly arranged, and the supporting mode of the pump is that the central line is horizontally supported; the shell sealing ring is embedded into the middle section of the piece and fixed by spot welding; after a dynamic balance test is carried out on the rotor part 1, the guide vanes and the middle section are sequentially connected into the rotor in series step by step and fixed by connecting screws; the suction section and the rear pump cover part are positioned through the seam allowance and fixed by the connecting screw, and are integrated with the rotor part.
The integral core-pulling type double-shell multistage centrifugal pump is characterized in that the sealing box body and the tail cover component are positioned through the seam allowance and fixed through the connecting screws and are respectively combined to the suction section and the rear pump cover component.
The integral core-pulling type double-shell multistage centrifugal pump is characterized in that bearing body parts are respectively installed in the front and the back of the cylinder body part, and after installation centering gaps of an impeller and a bearing bush are adjusted, the front and the back bearing bodies are respectively fixed on a suction section and a back pump cover part through connecting bolts.
The utility model has the advantages and effects that:
the utility model discloses collection dress formula inner core can wholly carry out the dismouting, at the installation site of pump, especially pipeline arrangement is comparatively complicated, the limited scene in space, can overhaul collection dress formula inner core whole after-removing operation to more spacious maintenance workshop, can effectively promote the maintenance precision, shorten repair time, improve maintenance efficiency, simultaneously, can accomplish the centering inspection of impeller, axle bush when collection dress formula inner core repacks, and need not to carry out above-mentioned work at the pump installation site.
Drawings
FIG. 1 is the overall structure schematic diagram of the double-casing multistage integral core-pulling centrifugal pump of the present invention;
fig. 2 is the utility model discloses the multistage centrifugal pump of loosing core of double-shell connects the mode schematic diagram.
The components in the figure: rotor part 1, bearing body part 2, sealing box body 3, locating ring 4, suction segment 5, casing sealing ring 6, stator 7, middle section 8, barrel part 9, back pump cover part 10, pump cover connecting bolt subassembly 11, tail cover part 12, mechanical seal part 13.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings.
The utility model provides a two casing multistage centrifugal pump of whole formula of loosing core, includes spare parts such as rotor part, bearing body part, sealing box, holding ring, suction section, casing sealing ring, stator, middle section, barrel casing part, back pump cover part, pump cover connecting bolt subassembly, tail cover part, mechanical seal.
The inner core of the centrifugal pump is of a sectional structure, the outer shell is of a cylindrical structure, the outer shell bears all working pressure of the pump, the suction pipe and the discharge pipe of the pump are vertically and upwards arranged, and the supporting mode of the pump is a central line horizontal supporting mode. The stage centrifugal pump can use a special disassembling tool matched with the pump to pump out all parts except the cylinder under the condition of not moving the inlet pipeline and the outlet pipeline of the pump, and is convenient for overhauling all parts on site.
Examples
As shown in the figure, the centrifugal pump with the BB5 type double-shell multistage integral core-pulling structure comprises a rotor component 1, a bearing body component 2, a sealing box body 3, a positioning ring 4, an intake section 5, a shell sealing ring 6, a guide vane 7, a middle section 8, a barrel body component 9, a rear pump cover component 10, a pump cover connecting bolt assembly 11, a tail cover component 12 and a mechanical sealing component 13.
As shown in fig. 2, when the pump is disassembled, the positioning ring 4 and the pump cover connecting bolt assembly 11 are disassembled, and then the integrated inner core can be integrally extracted by using a special disassembling tool, otherwise, the pump is assembled.
During installation, the sealing ring 6 of the piece shell is embedded into the middle section 8 of the piece shell and fixed by spot welding. After the dynamic balance test is carried out on the rotor part 1, the guide vanes 7 and the middle section 8 are sequentially connected into the rotor in series and fixed by connecting screws. The suction section 5 and the rear pump cover 10 are positioned by a spigot and fixed by a connecting screw, and are formed integrally with the rotor part 1. The sealing box body 3 and the tail cover part 12 are positioned by a spigot and fixed by connecting screws and are respectively combined on the suction section 5 part and the rear pump cover part 10. The mechanical seal members 13 are installed in front and rear. The front and the rear parts are respectively arranged in the bearing body part 2, after the installation centering gap of the impeller and the bearing bush is adjusted, the front and the rear bearing bodies are respectively fixed on the suction section 5 and the rear pump cover part 10 by connecting bolts. The assembled integral pump core is sent into the barrel body part 9 through a special tool, axial positioning is realized through spigot matching, and the positioning ring 4 is clamped into a common ring groove of the barrel body part 9 and the suction section 5 to realize circumferential positioning. And finally, the whole is fixed through a pump cover connecting bolt assembly 11. During disassembly, the connecting bolt assembly 11 is opened, the positioning ring 4 is disassembled, and the integral pump core is drawn out of the barrel part 9 by a special tool.
Claims (3)
1. An integral core-pulling type double-shell multistage centrifugal pump is characterized by comprising a rotor component, a bearing body component, a sealing box body, a positioning ring, a suction section, a shell sealing ring, a guide vane, a middle section, a cylinder body component, a rear pump cover component, a pump cover connecting bolt component, a tail cover component and a mechanical seal; the inner core of the centrifugal pump is of a sectional structure, the outer shell of the centrifugal pump is of a cylindrical structure, a suction pipe and a discharge pipe of the pump are both vertically and upwardly arranged, and the supporting mode of the pump is that the central line is horizontally supported; the shell sealing ring is embedded into the middle section of the piece and fixed by spot welding; after the dynamic balance test is carried out on the rotor part, the guide vanes and the middle section are sequentially connected into the rotor in series step by step and fixed by connecting screws; the suction section and the rear pump cover part are positioned through the seam allowance and fixed by the connecting screw, and are integrated with the rotor part.
2. The centrifugal pump of claim 1, wherein the sealing box and the tail cover are fixed by means of spigot positioning and connecting screws to be respectively coupled to the suction section and the rear pump cover.
3. The centrifugal pump as claimed in claim 1, wherein the bearing body parts are respectively installed in the front and rear of the barrel part, and after the centering gap between the impeller and the bearing bush is adjusted, the front and rear bearing bodies are respectively fixed to the suction section and the rear pump cover part by the connection bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779156.1U CN213298290U (en) | 2020-08-24 | 2020-08-24 | Integral core-pulling type double-shell multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021779156.1U CN213298290U (en) | 2020-08-24 | 2020-08-24 | Integral core-pulling type double-shell multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213298290U true CN213298290U (en) | 2021-05-28 |
Family
ID=76026802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021779156.1U Active CN213298290U (en) | 2020-08-24 | 2020-08-24 | Integral core-pulling type double-shell multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298290U (en) |
-
2020
- 2020-08-24 CN CN202021779156.1U patent/CN213298290U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5567133A (en) | Canned motor and pump employing such canned motor | |
| CN101892991B (en) | Horizontal type multi-stage pump without leakage | |
| CN2859041Y (en) | Water supplying pump for pressure boiler | |
| US20100202878A1 (en) | Turbo Engine and Method for Producing Such a Turbo Engine | |
| CN110985402A (en) | Small-flow ultrahigh-lift pitot tube pump | |
| CN209990691U (en) | End suction type direct connection double-suction pump | |
| CN201747617U (en) | Horizontal multi-stage pump | |
| CN213298290U (en) | Integral core-pulling type double-shell multistage centrifugal pump | |
| CN101545491A (en) | Boiler water-feeding pump | |
| RU2669133C1 (en) | Method for manufacturing a cast body of a radial turbohydraulic power plant, prefabricated cast model of a body (variants), typical series of bodies | |
| CN206785748U (en) | A kind of fast demountable two-stage cantilever centrifugal pump | |
| CN219570360U (en) | Compact double-cylinder centrifugal compressor | |
| CN105298633A (en) | Adjustable type exhaust gas turbocharger | |
| CN101614137A (en) | Hydraulic turbine installation | |
| CN213899304U (en) | Two-end supporting radial subdivision two-stage centrifugal pump | |
| CN215566829U (en) | Stepped spiral groove annular dynamic sealing structure of water outlet section of self-balancing multi-stage pump | |
| CN215672851U (en) | Water outlet section throttling sealing structure of self-balancing multistage centrifugal pump | |
| CN210565153U (en) | Integral core-pulling full-pressure design double-shell high-pressure centrifugal pump | |
| CN209875479U (en) | Coaxial symmetrically-arranged multistage hydraulic turbine direct-drive pump | |
| CN210113386U (en) | Split type power turbine structure containing static pressure seal | |
| CN210949153U (en) | Small-flow ultrahigh-pressure boiler feed pump | |
| CN205533429U (en) | Multistage centrifugal pump circumference formula stator that crumples | |
| CN210637242U (en) | Multistage pump flow-induced vibration suppression device | |
| CN2725588Y (en) | High temperature resistant hot water circulation pump | |
| CN111648977A (en) | Motor-driven auxiliary water supply steam-driven pump test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |