CN108087290A - A kind of high-pressure masked pump of chemical-process conveying - Google Patents
A kind of high-pressure masked pump of chemical-process conveying Download PDFInfo
- Publication number
- CN108087290A CN108087290A CN201711439507.7A CN201711439507A CN108087290A CN 108087290 A CN108087290 A CN 108087290A CN 201711439507 A CN201711439507 A CN 201711439507A CN 108087290 A CN108087290 A CN 108087290A
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- CN
- China
- Prior art keywords
- rotor
- motor
- pump
- casing
- bearing pedestal
- 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
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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
- F04D13/0606—Canned motor pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5886—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling by injection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of high-pressure masked pumps of chemical-process conveying, the motor forward flange to connect including the pump housing and successively with the pump housing, front-end bearing pedestal, casing, motor rear flange, rear bearing block, rear cover and terminal box, motor electronic and rotor are provided in the casing, the motor electronic is set in outside rotor, and rotor shielding sleeve gap is formed between motor stator and rotor, the front-end bearing pedestal on rear bearing block with being provided with armature spindle, the impeller positioned at pump body and the accessory impeller in the rotor chamber of bearing block side are installed on the armature spindle, the rotor housing gap exit end is communicated by front-end bearing pedestal liquid pass hole with guide vane outlet, depending on rotor shielding sleeve gap entrance end pass through accessory impeller inner cavity, armature spindle centre bore, front-end bearing pedestal is crossed liquid bath and is communicated with guide vane outlet.The canned motor pump of the present invention has high pressure resistant, corrosion-resistant, No leakage, high reliability and security, can meet demand of industrial production.
Description
Technical field
The present invention relates to shielding pump technical fields, are specially a kind of high-pressure masked pump of chemical-process conveying.
Background technology
It is natural gas extraction, purification, transportation integration engineering that engineering is sent in western gas east, the gas material taken from gas field
Gas contains a large amount of hydrogen sulfide (15-18%) and chlorine ion concentration is in 7000-10000ppm, according to NACE standards, austenite stainless
Steel material requires chlorine ion concentration as follows：When 60 DEG C of temperature ＜, hydrogen sulfide sectional pressure ＜ 350kPa, chlorine ion concentration must not exceed
50ppm, so collecting raw natural gas chlorine ion concentration considerably beyond design and standard requirement, there are chlorion inductions
The risk of hydrogen sulfide splitting.Unstripped gas pipelined pressure medium height (8.4MPa), hydrogen sulfide content height (15-
18%), once the hydrogen sulfide splitting of chlorion induction occurs, unstripped gas leakage rate is big, speed is fast, involves scope
Extensively, there are personnel's poisoning, fire explosion, environmental pollution equivalent risks.For this purpose, before natural gas to be gone to purification plant's purification, need pair
All natural gas carries out washing dechlorination.
But circulating pump is needed to convey flushing water in natural gas dechlorination process is rinsed with water, this operating mode there are following characteristics：
(1) the absolute No leakage of circulating pump is required；
(2) system pressure is high, reaches 8.4MPa；
(3) the substantial amounts of hydrogen sulfide gas of water dissolution is rinsed, sensitive to temperature change, temperature rise will be precipitated；
(4) flushing water takes away chlorion in natural gas, itself chlorine ion concentration increases, to pumping the requirement of liquid part material
It is high；
(5) circulating pump is the core drive equipment for washing dechlorination apparatus, it is desirable that high reliability and security；
Due to above 5 features, it is known that common centrifugal pump for chemical procedure can not meet use, it is therefore desirable to the operating mode
Design a kind of canned motor pump.
The content of the invention
For deficiency of the prior art, the present invention provides a kind of high-pressure masked pumps of chemical-process conveying, have
High pressure resistant, corrosion-resistant, No leakage, high reliability and security can meet demand of industrial production.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of high-pressure masked pump of chemical-process conveying, the motor forward flange to connect including the pump housing and successively with the pump housing,
Front-end bearing pedestal, casing, motor rear flange, rear bearing block, rear cover and terminal box are provided with motor electronic and motor in the casing
Rotor, the motor electronic are set in outside rotor, and are formed between motor stator and rotor between rotor shielding sleeve
Gap, the front-end bearing pedestal are installed on the armature spindle positioned at pump body with being provided with armature spindle on rear bearing block
Impeller and the accessory impeller in the rotor chamber of bearing block side, the terminal box are arranged on casing, it is characterised in that：Described fixed turn
Sub- housing gap exit end is communicated by the outlet of front-end bearing pedestal liquid pass hole and guide vane, depending on rotor shielding sleeve gap entrance end lead to
Cross accessory impeller inner cavity, armature spindle centre bore, front-end bearing pedestal are crossed liquid bath and communicated with guide vane outlet.
Further, the terminal box is attached with casing using pipe pipe butt welding mode, the motor forward flange electricity
Machine rear flange uses band root face J-type to weld with casing.
Compared with prior art, the present invention with following advantageous effect：
(1) canned motor pump of the invention meets water and rinses in natural gas dechlorination process, absolute No leakage, resistance to height to circulating pump
The requirement of pressure, corrosion-resistant, high reliability and security, and pass through and use motor forward flange, motor rear flange and casing with blunt
Side J-type welding, main junction box use pipe pipe butt welding mode with casing so that canned motor pump has secondary bearing structure, due to two
Secondary pressure-bearing design, remains able to high-pressure medium being sealed in pump and motor, is not leaked in the external environment outside pump, so as to
Raising canned motor pump is high pressure resistant, anti-leak function；
(2) high-pressure masked pump of the invention, cooling and lubricating circulation fluid passes through from armature spindle centre bore to accessory impeller during work
After accessory impeller supercharging, by rotor housing gap, guide vane outlet is returned to；Pass through the design of circulation loop and motor thermic load
Optimization design, cooling and lubricating circulation fluid cool down motor and lubrication bearing while, avoid due to the rise of temperature and analyse
Go out hydrogen sulfide gas.
Description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is the structure diagram of the present invention；
In figure：1st, the pump housing；2nd, motor forward flange；3rd, front-end bearing pedestal；4th, casing；5th, motor rear flange；6th, rear bearing block；7、
Rear cover；70th, terminal box；8th, motor stator；9th, rotor；10th, rotor housing gap；11st, armature spindle；12nd, impeller；
13rd, accessory impeller；14th, guide vane.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described.
As shown in Figure 1, a kind of high-pressure masked pump of chemical-process conveying, connect including the pump housing 1 and successively with the pump housing 1
Motor forward flange 2, front-end bearing pedestal 3, casing 4, motor rear flange 5, rear bearing block 6, rear cover 7 and terminal box 70, in the casing 4
Motor electronic 8 and rotor 9 are provided with, motor electronic 8 is set in outside rotor 9, and motor stator 8 and rotor
Rotor shielding sleeve gap 10 is formed between 9, the front-end bearing pedestal 3 on rear bearing block 6 with being provided with armature spindle 11, the rotor
The impeller 12 and the accessory impeller 13 in the rotor chamber of bearing block side being installed on axis 11 inside the pump housing 1, it is described to connect
Wire box 70 is arranged on casing 4, and 10 port of export of rotor housing gap exports phase by 3 liquid pass hole of front-end bearing pedestal and guide vane 14
It is logical, depending on 10 arrival end of rotor shielding sleeve gap by 13 inner cavity of accessory impeller, armature spindle centre bore, front-end bearing pedestal 3 cross liquid bath with
The outlet of guide vane 14 communicates, in this manner it is possible to form coolant circulation loop in canned motor pump, is ensureing cooling motor and lubrication axis
While holding, and it can avoid due to the rise of temperature and hydrogen sulfide gas is precipitated.By by cooling and lubricating circulation fluid from rotor
Axis center hole after accessory impeller is pressurized, by rotor housing gap, returns to guide vane outlet, so as to be formed to accessory impeller
Coolant circulation loop.
Wherein, the left side of casing 4 is provided with main junction box 15, main junction box 15 and casing 4 using pipe pipe butt welding mode into
Row connection by main junction box and casing using pipe pipe butt welding mode, and adopts motor forward flange, motor rear flange and casing
It is welded with band root face J-type, so allows for canned motor pump with secondary bearing structure, since secondary pressure-bearing designs, remain able to
High-pressure medium is sealed in pump and motor, is not leaked in the external environment outside pump, canned motor pump is high pressure resistant, prevents letting out so as to improve
Leak function.
To sum up, canned motor pump of the invention meets water and rinses in natural gas dechlorination process, absolute No leakage to circulating pump, resistance to
The requirement of high pressure, corrosion-resistant, high reliability and security, and pass through and motor forward flange, motor rear flange and casing are used into band
Root face J-type is welded, and main junction box uses pipe pipe butt welding mode with casing so that and canned motor pump has secondary bearing structure, due to
Secondary pressure-bearing design, remains able to high-pressure medium being sealed in pump and motor, is not leaked in the external environment outside pump, from
And improve that canned motor pump is high pressure resistant, anti-leak function；
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, although with reference to foregoing reality
Example is applied the present invention is described in detail, it for those skilled in the art, still can be to foregoing each implementation
Technical solution recorded in example modifies or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (2)
1. a kind of high-pressure masked pump of chemical-process conveying, including the pump housing（1）Successively with the pump housing（1）Method before the motor to connect
It is blue（2）, front-end bearing pedestal（3）, casing（4）, motor rear flange（5）, rear bearing block（6）, rear cover（7）And terminal box（70）, it is described
Casing（4）Inside it is provided with motor electronic（8）And rotor（9）, the motor electronic（8）It is set in rotor（9）Outside,
And motor stator（8）With rotor（9）Between form rotor shielding sleeve gap（10）, the front-end bearing pedestal（3）With rear bearing
Seat（6）On be provided with armature spindle（11）, the armature spindle（11）On be installed with positioned at the pump housing（1）Internal impeller（12）With
Accessory impeller in the rotor chamber of bearing block side（13）, the terminal box（70）It is arranged on casing（4）On, it is characterised in that：Institute
State rotor housing gap（10）The port of export passes through front-end bearing pedestal（3）Liquid pass hole and guide vane（14）Outlet communicates, and rotor
Housing gap（10）Arrival end passes through accessory impeller（13）Inner cavity, armature spindle centre bore, front-end bearing pedestal（3）Cross liquid bath and guide vane
（14）Outlet communicates.
2. the high-pressure masked pump of chemical-process conveying according to claim 2, it is characterised in that：The terminal box（70）
With casing（4）It is attached using pipe pipe butt welding mode, the motor forward flange（2）, motor rear flange（5）With casing（4）
Using the J-type welding of band root face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711439507.7A CN108087290A (en) | 2017-12-27 | 2017-12-27 | A kind of high-pressure masked pump of chemical-process conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711439507.7A CN108087290A (en) | 2017-12-27 | 2017-12-27 | A kind of high-pressure masked pump of chemical-process conveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108087290A true CN108087290A (en) | 2018-05-29 |
Family
ID=62178440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711439507.7A Pending CN108087290A (en) | 2017-12-27 | 2017-12-27 | A kind of high-pressure masked pump of chemical-process conveying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108087290A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11324971A (en) * | 1998-05-18 | 1999-11-26 | Ebara Corp | Canned motor pump |
| CN202152756U (en) * | 2011-07-27 | 2012-02-29 | 上海东方泵业(集团)有限公司 | Reverse circulation type shielding chemical pump with internal circulation structure |
| CN202348696U (en) * | 2011-12-09 | 2012-07-25 | 合肥新沪屏蔽泵股份有限公司 | Canned motor pump with outer recirculation mechanism |
| CN202659519U (en) * | 2012-06-25 | 2013-01-09 | 合肥新沪屏蔽泵股份有限公司 | Internal pressurized multistage shield pump for conveying easily gasifying medium |
| CN202659520U (en) * | 2012-06-25 | 2013-01-09 | 合肥新沪屏蔽泵股份有限公司 | High temperature high pressure shield pump |
| CN203879750U (en) * | 2014-01-28 | 2014-10-15 | 上海日机装屏蔽泵有限公司 | Shield pump conveying high temperature liquid |
| CN204226220U (en) * | 2014-11-12 | 2015-03-25 | 大连环友屏蔽泵有限公司 | Double suction canned motorpump |
| CN206647315U (en) * | 2017-03-15 | 2017-11-17 | 安徽六国化工股份有限公司 | A kind of external circulation shielding pump |
-
2017
- 2017-12-27 CN CN201711439507.7A patent/CN108087290A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11324971A (en) * | 1998-05-18 | 1999-11-26 | Ebara Corp | Canned motor pump |
| CN202152756U (en) * | 2011-07-27 | 2012-02-29 | 上海东方泵业(集团)有限公司 | Reverse circulation type shielding chemical pump with internal circulation structure |
| CN202348696U (en) * | 2011-12-09 | 2012-07-25 | 合肥新沪屏蔽泵股份有限公司 | Canned motor pump with outer recirculation mechanism |
| CN202659519U (en) * | 2012-06-25 | 2013-01-09 | 合肥新沪屏蔽泵股份有限公司 | Internal pressurized multistage shield pump for conveying easily gasifying medium |
| CN202659520U (en) * | 2012-06-25 | 2013-01-09 | 合肥新沪屏蔽泵股份有限公司 | High temperature high pressure shield pump |
| CN203879750U (en) * | 2014-01-28 | 2014-10-15 | 上海日机装屏蔽泵有限公司 | Shield pump conveying high temperature liquid |
| CN204226220U (en) * | 2014-11-12 | 2015-03-25 | 大连环友屏蔽泵有限公司 | Double suction canned motorpump |
| CN206647315U (en) * | 2017-03-15 | 2017-11-17 | 安徽六国化工股份有限公司 | A kind of external circulation shielding pump |
Non-Patent Citations (1)
| Title |
|---|
| 阎克智: "《核电厂通用机械设备》", 31 December 2010 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180529 |
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| RJ01 | Rejection of invention patent application after publication |