CN111412145A - Coal-to-liquid circulating pump - Google Patents

Coal-to-liquid circulating pump Download PDF

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Publication number
CN111412145A
CN111412145A CN201911307759.3A CN201911307759A CN111412145A CN 111412145 A CN111412145 A CN 111412145A CN 201911307759 A CN201911307759 A CN 201911307759A CN 111412145 A CN111412145 A CN 111412145A
Authority
CN
China
Prior art keywords
pressure
bearing
bearing shell
self
shell
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.)
Pending
Application number
CN201911307759.3A
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Chinese (zh)
Inventor
徐成
姚荣祥
周巧霞
丁孟良
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.)
HEFEI WANHUA ELECTRICAL MACHINERY TECH DEVELOPMENT CO LTD
Original Assignee
HEFEI WANHUA ELECTRICAL MACHINERY TECH DEVELOPMENT CO LTD
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 HEFEI WANHUA ELECTRICAL MACHINERY TECH DEVELOPMENT CO LTD filed Critical HEFEI WANHUA ELECTRICAL MACHINERY TECH DEVELOPMENT CO LTD
Priority to CN201911307759.3A priority Critical patent/CN111412145A/en
Publication of CN111412145A publication Critical patent/CN111412145A/en
Pending legal-status Critical Current

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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
    • 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
    • F04D13/0693—Details or arrangements of the wiring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • 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

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

Abstract

A coal-to-liquid circulating pump. The anti-explosion bearing comprises a pump shell and a pressure-bearing shell, wherein a lower end cover is arranged at the bottom of the pressure-bearing shell, the pump shell is installed at the top of the pressure-bearing shell, an anti-explosion junction box is arranged on the outer wall of the lower end of the pressure-bearing shell, a main shaft is arranged inside the pressure-bearing shell, a rotor is arranged in the middle section of the main shaft, a stator is arranged outside the rotor, oil-resistant windings are arranged above and below the stator, a thrust bearing is arranged at the lower end of the main shaft, a lower guide bearing is arranged above the thrust bearing, an impeller is installed at the top end of the main shaft, a drain outlet is formed in. The wiring terminal and the self-sealing lead-out wire connector are in a connected state no matter whether the bolt is screwed up or loosened, good electrical connection can be guaranteed, the tightness of the self-sealing lead-out wire connector and the shell of the circulating pump is not affected by the tightness of the bolt, and a good sealing effect can be always kept.

Description

Coal-to-liquid circulating pump
Technical Field
The invention relates to the technical field of circulating pumps, in particular to a coal-to-liquid circulating pump.
Background
Coal-to-liquids (CT L) is prepared from Coal as raw material,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
Aiming at the problems in the related art, the invention provides a coal-to-liquid circulating pump, wherein a circulating oil path, a sewage discharge port and a heat exchanger are connected to form an internal and external circulating loop, heat inside a motor can be quickly dissipated by heat exchange outside, the environmental temperature of the motor is reduced, a binding post and a self-sealing lead-out wire joint are in a connected state no matter whether a bolt is screwed up or loosened, good electric connection can be ensured, the sealing performance of the self-sealing lead-out wire joint and a circulating pump shell is not influenced by the tightness degree of the bolt, and a good sealing effect can be always kept.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a coal-to-liquid circulating pump, which comprises a pump shell and a pressure-bearing shell, wherein the bottom of the pressure-bearing shell is provided with a lower end cover, the top of the pressure-bearing shell is provided with the pump shell, the outer wall of the lower end of the pressure-bearing shell is provided with an explosion-proof junction box, a main shaft is arranged in the pressure-bearing shell, the middle section of the main shaft is provided with a rotor, the outer part of the rotor is provided with a stator, oil-resistant windings are arranged above and below the stator, the lower end of the main shaft is provided with a thrust bearing, a lower guide bearing is arranged above the thrust bearing, an upper guide bearing is also arranged above the rotor of the main shaft, the top end of the main shaft is provided with an impeller, the bottom of the lower end cover is provided with a sewage discharge outlet, the, the two sewage outlets are connected with the heat exchanger through pipelines, and a circulation loop is formed among the circulation oil way, the sewage outlets and the heat exchanger.
Furthermore, the explosion-proof junction box is fixed on the pressure-bearing shell, the self-sealing lead-out wire connector is fixed on the pressure-bearing shell in the explosion-proof junction box after being led out from the motor, the self-sealing lead-out wire connector is sealed with the contact position of the pressure-bearing shell, two fixing seats are arranged in the middle of the inner wall of the explosion-proof junction box, a pressing plate is arranged between the two fixing seats and fixed on the fixing seats through two bolts, a through hole is formed in the middle of the pressing plate, a terminal penetrates through the through hole, a contact groove is formed in the middle of one end, facing the self-sealing lead-out wire connector, of the terminal, the shape of the contact groove is the same as that of the front end of the self-sealing lead-.
Furthermore, the through-hole of clamp plate is "protruding" font, and is greater than the opposite side diameter towards self sealss lead-out wire connector one side, terminal middle part section also is "protruding" font, and is greater than the other end diameter towards self sealss lead-out wire connector one end.
The invention has the beneficial effects that:
according to the invention, the circulating oil circuit is arranged between the rotor and the stator, and the circulating oil circuit is connected with the sewage discharge port and the heat exchanger to form a circulating loop, so that an internal and external circulating loop is formed, heat inside the motor can be quickly dissipated by heat exchange outside, the temperature of the environment of the motor is reduced, no matter the bolt is screwed up or screwed down, the binding post and the self-sealing lead-out wire connector are in a connected state, good electric connection can be ensured, meanwhile, the pressing plate can limit the shaking of the binding post and keep the binding post stable, so that the good electric connection between the binding post and the self-sealing lead-out wire connector is ensured, in addition, the sealing performance between the self-sealing lead-out wire connector and the circulating pump shell is not influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the explosion-proof junction box of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 an embodiment of the present invention, a coal-to-liquid circulation pump is provided.
Referring to fig. 1-2, the explosion-proof pressure-bearing pump comprises a pump shell 1 and a pressure-bearing shell 2, wherein a lower end cover 3 is arranged at the bottom of the pressure-bearing shell 2, the pump shell 1 is installed at the top of the pressure-bearing shell 2, an explosion-proof junction box 4 is arranged on the outer wall of the lower end of the pressure-bearing shell 2, a main shaft is arranged in the pressure-bearing shell 2, a rotor 5 is arranged in the middle section of the main shaft, a stator 6 is arranged outside the rotor 5, oil-proof windings 7 are arranged above and below the stator 6, a thrust bearing 8 is arranged at the lower end of the main shaft, a lower guide bearing 9 is arranged above the thrust bearing 8, an upper guide bearing 10 is also arranged above the rotor 5 of the main shaft, an impeller 11 is installed at the top end of the main shaft, a drain 12 is arranged at the bottom, the other end is connected with a sewage draining exit 12 on the outer wall of the middle section of the pressure-bearing shell 2, the two sewage draining exits 12 are connected with a heat exchanger through pipelines, and a circulation loop is formed among the circulation oil circuit, the sewage draining exit and the heat exchanger 13.
The explosion-proof junction box 4 is fixed on the pressure-bearing shell 2, the self-sealing lead-out wire joint 14 is fixed on the pressure-bearing shell 2 in the explosion-proof junction box 4 after being led out from the motor, the contact part of the self-sealing lead-out wire joint 14 and the pressure-bearing shell 2 is sealed, two fixing seats 15 are arranged in the middle of the inner wall of the explosion-proof junction box 4, a pressure plate 16 is arranged between the two fixing seats 15, the pressure plate 16 is fixed on the fixing seats 15 through two bolts 17, a through hole is arranged in the middle of the pressure plate 16, a binding post 18 penetrates through the through hole, a contact groove 19 is arranged in the middle of one end, facing the self-sealing lead-out wire joint 14, of the binding post 18, the shape of the contact groove 19 is the same as that of the front end of the self-sealing lead-out wire joint 14, the sizes, the through hole of the pressure plate 16 is in a shape of a convex, the diameter of the through hole is larger towards one side of the self-sealing outgoing line connector 14 than that of the through hole of the other side of the self-sealing outgoing line connector, the section of the middle part of the binding post 18 is also in a shape of a convex, and the diameter of the through hole is larger towards one end of the self-sealing outgoing line connector 14.
The invention is provided with a circulating oil circuit between a rotor and a stator, and the circulating oil circuit is connected with a sewage draining exit and a heat exchanger to form a circulating loop, so as to form an internal and external circulating loop, heat is dissipated by heat exchange outside, thereby the internal heat of a motor can be dissipated rapidly, the environmental temperature of the motor is reduced, the bottom of an explosion-proof junction box 4 is fixed on a pressure-bearing shell 2, a self-sealing lead-out wire connector 14 is arranged on the pressure-bearing shell 2 in the explosion-proof junction box 4 after being led out from the motor, then a contact groove 19 of a binding post 18 is aligned with the front end of the self-sealing lead-out wire connector 14, then a middle through hole of a pressure plate 16 is sleeved in from the binding post 18, and then the pressure plate 16 is fixed on a fixed seat 15 by using a bolt 17, because the depth of the contact groove 19 is deeper, the, therefore, no matter the bolt is screwed up or loosened, the wiring terminal 18 and the self-sealing lead-out wire connector 14 are in a connection state and can ensure good electric connection, meanwhile, the through hole of the pressing plate 16 is in a shape like a Chinese character 'tu', the diameter of one side of the pressing plate facing the self-sealing lead-out wire connector 14 is larger than that of the other side of the pressing plate, the section of the middle part of the wiring terminal 18 is also in a shape like a Chinese character 'tu', the diameter of one end of the pressing plate facing the self-sealing lead-out wire connector 14 is larger than that of the other end of the pressing plate, so that the pressing plate 16 can limit the shaking of the wiring terminal 18 and keep the wiring terminal stable, thereby providing guarantee for good electric connection of the wiring terminal and the self-sealing lead-out wire.
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 (3)

1. A coal-to-liquid circulating pump is characterized by comprising a pump shell and a pressure-bearing shell, wherein a lower end cover is arranged at the bottom of the pressure-bearing shell, the pump shell is mounted at the top of the pressure-bearing shell, an explosion-proof junction box is arranged on the outer wall of the lower end of the pressure-bearing shell, a main shaft is arranged in the pressure-bearing shell, a rotor is arranged in the middle section of the main shaft, a stator is arranged outside the rotor, oil-resistant windings are arranged above and below the stator, a thrust bearing is arranged at the lower end of the main shaft, a lower guide bearing is arranged above the thrust bearing, an upper guide bearing is arranged above the rotor of the main shaft, an impeller is arranged at the top end of the main shaft, a drain outlet is arranged at the bottom of the lower end cover, a drain outlet is also arranged on the outer, the two sewage outlets are connected with the heat exchanger through pipelines, and a circulation loop is formed among the circulation oil way, the sewage outlets and the heat exchanger.
2. The circulating pump of claim 1, wherein the explosion-proof junction box is fixed on a pressure-bearing shell, the self-sealing lead-out wire connector is fixed on the pressure-bearing shell in the explosion-proof junction box after being led out from the motor, the contact position of the self-sealing lead-out wire connector and the pressure-bearing shell is sealed, two fixing seats are arranged in the middle of the inner wall of the explosion-proof junction box, a pressing plate is arranged between the two fixing seats and fixed on the fixing seats through two bolts, a through hole is formed in the middle of the pressing plate, a binding post penetrates through the through hole, a contact groove is formed in the middle of one end, facing the self-sealing lead-out wire connector, of the binding post, the shape of the contact groove is the same as that of the front end of the self-sealing lead-.
3. The circulating pump of claim 1, wherein the through hole of the pressure plate is "convex" shaped, and has a larger diameter toward one side than the other side of the self-sealing terminal, and the cross section of the middle portion of the terminal is also "convex" shaped, and has a larger diameter toward one end than the other end of the self-sealing terminal.
CN201911307759.3A 2019-12-18 2019-12-18 Coal-to-liquid circulating pump Pending CN111412145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911307759.3A CN111412145A (en) 2019-12-18 2019-12-18 Coal-to-liquid circulating pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911307759.3A CN111412145A (en) 2019-12-18 2019-12-18 Coal-to-liquid circulating pump

Publications (1)

Publication Number Publication Date
CN111412145A true CN111412145A (en) 2020-07-14

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ID=71488888

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911307759.3A Pending CN111412145A (en) 2019-12-18 2019-12-18 Coal-to-liquid circulating pump

Country Status (1)

Country Link
CN (1) CN111412145A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201256334Y (en) * 2008-08-06 2009-06-10 合肥皖化电机技术开发有限责任公司 Furnace water pump motor having built-in magnetic filter
CN101834482A (en) * 2010-05-19 2010-09-15 上海中科深江电动车辆有限公司 Outlet structure of power line for driving motor of electric vehicle
CN203951304U (en) * 2014-06-27 2014-11-19 合肥皖化电机技术开发有限责任公司 A kind of boiler pump motor with self sealss conductive contact
CN206041719U (en) * 2016-08-31 2017-03-22 浙江晶星齿轮电机有限公司 Waterproof locking device of motor cable lead -out wire
CN109038957A (en) * 2017-06-11 2018-12-18 何巨堂 The shield electric machine and its shielded electric pump of cold house outside electric machine casing inner stator half way
CN109209909A (en) * 2018-07-27 2019-01-15 合肥皖化电机技术开发有限责任公司 A kind of boiler pump motor chamber decontamination apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201256334Y (en) * 2008-08-06 2009-06-10 合肥皖化电机技术开发有限责任公司 Furnace water pump motor having built-in magnetic filter
CN101834482A (en) * 2010-05-19 2010-09-15 上海中科深江电动车辆有限公司 Outlet structure of power line for driving motor of electric vehicle
CN203951304U (en) * 2014-06-27 2014-11-19 合肥皖化电机技术开发有限责任公司 A kind of boiler pump motor with self sealss conductive contact
CN206041719U (en) * 2016-08-31 2017-03-22 浙江晶星齿轮电机有限公司 Waterproof locking device of motor cable lead -out wire
CN109038957A (en) * 2017-06-11 2018-12-18 何巨堂 The shield electric machine and its shielded electric pump of cold house outside electric machine casing inner stator half way
CN109209909A (en) * 2018-07-27 2019-01-15 合肥皖化电机技术开发有限责任公司 A kind of boiler pump motor chamber decontamination apparatus

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Application publication date: 20200714