CN111509913A - External circulation cooling method of coal-to-liquid circulating pump - Google Patents
External circulation cooling method of coal-to-liquid circulating pump Download PDFInfo
- Publication number
- CN111509913A CN111509913A CN201911343133.8A CN201911343133A CN111509913A CN 111509913 A CN111509913 A CN 111509913A CN 201911343133 A CN201911343133 A CN 201911343133A CN 111509913 A CN111509913 A CN 111509913A
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- CN
- China
- Prior art keywords
- circulation
- coal
- heat exchanger
- circulating pump
- liquid circulating
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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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
An external circulation cooling method of a coal-to-liquid circulating pump. A circulation inlet is formed in the bottom end cover of the coal-to-liquid circulating pump, a circulation outlet is formed in the side wall, close to the pump shell, of the coal-to-liquid circulating pump, a plurality of circulation pipelines are arranged around a rotor, a stator and a winding in the coal-to-liquid circulating pump, one end of each circulation pipeline is connected with the circulation inlet, and the other end of each circulation pipeline is connected with the circulation outlet; a heat exchanger is arranged outside the coal-to-liquid circulating pump, the top of the heat exchanger is communicated with the circulating outlet, and the bottom of the heat exchanger is communicated with the circulating inlet, so that a plurality of circulating pipelines and the heat exchanger form a circulating loop. The invention arranges a plurality of circulation pipelines around the rotor, the stator and the winding, and connects the circulation pipelines with the circulation inlet, the circulation outlet and the heat exchanger to form an internal and external circulation loop, and heat exchange and heat dissipation are carried out outside, so that the heat in the motor can be quickly dissipated, and the environmental temperature of the motor is reduced.
Description
Technical Field
The invention relates to the technical field of circulating pumps, in particular to an external circulation cooling method of a coal-to-liquid circulating pump.
Background
The Coal-to-liquids (CT L) isCoal is used as a raw material, and a technology for producing oil products and petrochemical products through a chemical processing process comprises two technical routes of direct coal liquefaction and indirect coal liquefaction. The direct liquefaction of coal is to directly liquefy coal under high temperature and high pressure by catalytic hydrogenation to synthesize liquid hydrocarbon fuel, and remove sulfur, nitrogen, oxygen and other atoms. The indirect coal liquefaction process is characterized in that raw material coal is gasified, then purification treatment is carried out to obtain raw material gas of carbon monoxide and hydrogen, and then related oil products or chemical products are synthesized under the actions of 270-350 ℃ and 2.5MPa and a catalyst. Namely, coal is firstly gasified into synthesis gas (CO + H)2) The synthesis gas is purified by removing sulfur, nitrogen and oxygen, and then subjected to water gas reaction to obtain H2the/CO ratio is adjusted to a proper value, and then the liquid fuel is synthesized by Fischer-Tropsch catalytic reaction, and a typical (Fischer-Tropsch) catalytic reaction diesel oil synthesis process comprises the following steps: coal gasification, coal gas purification, transformation and decarburization; F-T synthesis reaction; oil processing and the like. The raw gas produced by the gasification device is dedusted and cooled to obtain clean gas, the clean gas is subjected to CO wide-temperature sulfur-tolerant conversion and acid gas removal to obtain synthesis gas with qualified components, the synthesis gas enters a synthesis reactor, and H is carried out under the action of a catalyst at a certain temperature and pressure2And CO is converted into straight-chain hydrocarbons, water and a small amount of oxygen-containing organic compounds, wherein the oil phase adopts the conventional petroleum refining means. The F-T synthetic diesel oil is characterized in that: the synthetic conditions are mild, the reaction temperature is lower than 350 ℃, the reaction pressure is 2.0-3.0 MPa no matter in a fixed bed, a fluidized bed or a slurry bed, the conversion rate is high, indirect liquefaction hardly depends on coal types (suitable for natural gas and other carbon-containing resources), the reaction and operation conditions are mild, the indirect method has complex flow and high investment but has low requirements on the coal types, and products mainly consist of chain-shaped hydrocarbon, so the obtained cetane number is very high, and sulfur and aromatic hydrocarbon are hardly contained.
The coal gasification technology and the Fischer-Tropsch synthesis technology are adopted to produce petroleum and chemical products such as gasoline, kerosene, diesel oil, synthetic wax, ammonia, ethylene, propylene, α -olefin and the like, a circulating pump is needed in the coal indirect liquefaction process, a pump and a motor of the coal-to-liquid circulating pump are integrated, the heat of the oil is high, the temperature of a pump group can be kept in a high temperature state for a long time, and a motor in the motor cannot bear the high temperature, so that the temperature in the motor needs to be reduced and kept within a certain temperature, but the internal circulation cooling is adopted at present, the heat is high, the cooling is slow, and the formed high temperature can have adverse effects on the insulation and the chemical influence on the motor.
Disclosure of Invention
The invention provides an external circulation cooling method of a coal-to-liquid circulating pump, aiming at the problems in the related art, a plurality of circulation pipelines are arranged around a rotor, a stator and a winding, the circulation pipelines are connected with a circulation inlet, a circulation outlet and a heat exchanger to form an internal and external circulation loop, and heat exchange is carried out on the outside to dissipate heat, so that the heat in a motor can be quickly dissipated, and the environmental temperature of the motor is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an external circulation cooling method of a coal-to-liquid circulating pump, which comprises the following steps:
a circulation inlet is formed in the bottom end cover of the coal-to-liquid circulating pump, a circulation outlet is formed in the side wall, close to the pump shell, of the coal-to-liquid circulating pump, a plurality of circulation pipelines are arranged around a rotor, a stator and a winding in the coal-to-liquid circulating pump, one end of each circulation pipeline is connected with the circulation inlet, and the other end of each circulation pipeline is connected with the circulation outlet;
the coal-to-liquid circulation pump is externally provided with a heat exchanger, the top of the heat exchanger is communicated with a circulation outlet, the bottom of the heat exchanger is communicated with a circulation inlet, a plurality of circulation pipelines and the heat exchanger form a circulation loop, one side of the upper section of the heat exchanger is provided with a cooling water outlet, cooling water flows out from the cooling water outlet, one side of the lower section of the heat exchanger is provided with a cooling water inlet, and cooling water flows in from the cooling water inlet.
Further, the heat exchanger is fixed to a case of the coal-to-liquids circulation pump by a fixing plate.
The invention has the beneficial effects that:
the invention arranges a plurality of circulation pipelines around the rotor, the stator and the winding, and connects the circulation pipelines with the circulation inlet, the circulation outlet and the heat exchanger to form an internal and external circulation loop, and heat exchange and heat dissipation are carried out outside, so that the heat in the motor can be quickly dissipated, and the environmental temperature of the motor is reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
According to the embodiment of the invention, the external circulation cooling method of the coal-to-liquid circulating pump comprises the following steps:
a circulation inlet is formed in the bottom end cover of the coal-to-liquid circulating pump, a circulation outlet is formed in the side wall, close to the pump shell, of the coal-to-liquid circulating pump, a plurality of circulation pipelines are arranged around a rotor, a stator and a winding in the coal-to-liquid circulating pump, one end of each circulation pipeline is connected with the circulation inlet, and the other end of each circulation pipeline is connected with the circulation outlet;
the heat exchanger is arranged outside the coal-to-liquid circulating pump, the heat exchanger is fixed on a shell of the coal-to-liquid circulating pump through a fixing plate, the top of the heat exchanger is communicated with the circulating outlet, the bottom of the heat exchanger is communicated with the circulating inlet, a plurality of circulation pipelines and the heat exchanger form a circulating loop, a cooling water outlet is arranged on one side of the upper section of the heat exchanger, cooling water flows out from the cooling water outlet, and a cooling water inlet is arranged on one side of the lower section of the heat exchanger, so that the cooling water flows in from the cooling water.
The invention arranges a plurality of circulation pipelines around the rotor, the stator and the winding, and connects the circulation pipelines with the circulation inlet, the circulation outlet and the heat exchanger to form an internal and external circulation loop, and heat exchange and heat dissipation are carried out outside, so that the heat in the motor can be quickly dissipated, and the environmental temperature of the motor is reduced.
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, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. An external circulation cooling method of a coal-to-liquid circulating pump is characterized by comprising the following steps:
a circulation inlet is formed in the bottom end cover of the coal-to-liquid circulating pump, a circulation outlet is formed in the side wall, close to the pump shell, of the coal-to-liquid circulating pump, a plurality of circulation pipelines are arranged around a rotor, a stator and a winding in the coal-to-liquid circulating pump, one end of each circulation pipeline is connected with the circulation inlet, and the other end of each circulation pipeline is connected with the circulation outlet;
the coal-to-liquid circulation pump is externally provided with a heat exchanger, the top of the heat exchanger is communicated with a circulation outlet, the bottom of the heat exchanger is communicated with a circulation inlet, a plurality of circulation pipelines and the heat exchanger form a circulation loop, one side of the upper section of the heat exchanger is provided with a cooling water outlet, cooling water flows out from the cooling water outlet, one side of the lower section of the heat exchanger is provided with a cooling water inlet, and cooling water flows in from the cooling water inlet.
2. The method of claim 1, wherein the heat exchanger is secured to a coal to oil circulation pump housing by a retaining plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343133.8A CN111509913A (en) | 2019-12-24 | 2019-12-24 | External circulation cooling method of coal-to-liquid circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343133.8A CN111509913A (en) | 2019-12-24 | 2019-12-24 | External circulation cooling method of coal-to-liquid circulating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111509913A true CN111509913A (en) | 2020-08-07 |
Family
ID=71874080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911343133.8A Pending CN111509913A (en) | 2019-12-24 | 2019-12-24 | External circulation cooling method of coal-to-liquid circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111509913A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001008413A (en) * | 1999-06-21 | 2001-01-12 | Kamui Sangyo Kk | Method for cooling built-in electric motor |
| CN201332327Y (en) * | 2009-01-21 | 2009-10-21 | 合肥皖化电机技术开发有限责任公司 | Furnace water pump motor with cooling fin air cooling type heat shield |
| CN204349702U (en) * | 2013-11-25 | 2015-05-20 | 株式会社安川电机 | Electric rotating machine |
-
2019
- 2019-12-24 CN CN201911343133.8A patent/CN111509913A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001008413A (en) * | 1999-06-21 | 2001-01-12 | Kamui Sangyo Kk | Method for cooling built-in electric motor |
| CN201332327Y (en) * | 2009-01-21 | 2009-10-21 | 合肥皖化电机技术开发有限责任公司 | Furnace water pump motor with cooling fin air cooling type heat shield |
| CN204349702U (en) * | 2013-11-25 | 2015-05-20 | 株式会社安川电机 | Electric rotating machine |
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Application publication date: 20200807 |
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