CN203532306U - Primary flow guide disc for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof - Google Patents
Primary flow guide disc for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof Download PDFInfo
- Publication number
- CN203532306U CN203532306U CN201320700573.6U CN201320700573U CN203532306U CN 203532306 U CN203532306 U CN 203532306U CN 201320700573 U CN201320700573 U CN 201320700573U CN 203532306 U CN203532306 U CN 203532306U
- Authority
- CN
- China
- Prior art keywords
- lng
- immersed pump
- diversion disk
- liquid
- pump
- 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.)
- Expired - Lifetime
Links
- 239000003949 liquefied natural gas Substances 0.000 title abstract description 74
- 239000007788 liquid Substances 0.000 claims abstract description 78
- 239000000463 material Substances 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 15
- 239000000411 inducer Substances 0.000 claims description 11
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- SEPPVOUBHWNCAW-FNORWQNLSA-N (E)-4-oxonon-2-enal Chemical compound CCCCCC(=O)\C=C\C=O SEPPVOUBHWNCAW-FNORWQNLSA-N 0.000 description 1
- LLBZPESJRQGYMB-UHFFFAOYSA-N 4-one Natural products O1C(C(=O)CC)CC(C)C11C2(C)CCC(C3(C)C(C(C)(CO)C(OC4C(C(O)C(O)C(COC5C(C(O)C(O)CO5)OC5C(C(OC6C(C(O)C(O)C(CO)O6)O)C(O)C(CO)O5)OC5C(C(O)C(O)C(C)O5)O)O4)O)CC3)CC3)=C3C2(C)CC1 LLBZPESJRQGYMB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a primary flow guide disc for a liquefied natural gas (LNG) immersed pump and an LNG immersed pump thereof and belongs to the technical field of LNG. The primary flow guide disc for the LNG immersed pump comprises a disc-shaped flow guide disc body, a plurality of helical line flow channels are evenly distributed on the edge portion of the flow guide disc body, the helical direction of all the flow channels is identical, and the flow channels are arranged on the edge portion of the flow guide disc body to be communicated with two sides of the flow guide disc body. According to the primary flow guide disc for the LNG immersed pump and the LNG immersed pump, liquid can be collected well, kinetic energy can be converted into pressure energy well, the energy loss is small when the liquid direction is changed, the hydraulic loss of the liquid is greatly reduced, the impact on the flow channels caused by liquid flow is reduced, energy consumption is reduced, and accordingly the immersed pump can have higher efficiency.
Description
Technical field
The utility model relates to LNG technical field, particularly a kind of LNG immersed pump.
Background technique
LNG is the abbreviation of LNG Liquefied natural gas (liquefied natural gas).Main component is methane.Colourless, tasteless, the nontoxic and non-corrosiveness of LNG, its volume is about with 1/600 of amount gaseous natural gas volume.Therefore LNG Liquefied natural gas is the effective means of natural gas storing and transportation, has obtained development rapidly this year.
LNG immersed pump be a kind of by Pump and Electromotor integral installation in sealed metal container, can accomplish zero leakage, avoid producing explosive atmosphere, eliminate the transportation of liquefied natural gas of ignition condition and the core drive output unit of relevant cryogenic liquide, the key issue that independent development need to solve at present comprises: the research of LNG immersed pump electrical equipment is mainly that the research of low temp. electric insulating material and cryocable is, the lubrication technical research of the Seal Technology Study of electrical connection place, latent liquid type motor and motor low-temperature working characteristic several respects; The research of the LNG immersed pump pump housing, is mainly LNG cavitation rule research in pump, and low temperature immersed pump impeller and inducer structural design are in the research of optimization and LNG immersed pump self-balancing mechanism.
Due to the low temperature of LNG and inflammable characteristic, transfer pump is not only wanted the performance that can bear low temperature, and requires higher to the tightness of pump and electrical safety performance.In addition, the balance problem that in motor lubrication and cooling in low temperature LNG, the pump housing, contingent LNG gasification, rotor and pump housing impeller bring with the same axis jointly etc., become the key property that LNG immersed pump is different from the general pump housing, addressing these problems is the key point of development LNG immersed pump.
High speed development along with LNG technology, functional requirement to LNG liquid feeding equipment is higher, therefore determined the constantly characteristic of consummating function of LNG liquid feeding equipment, existing LNG low temperature immersion type immersed pump, the inflow of liquid and outflow are all restricted, and make the power of pump on the low side.
Model utility content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, a kind of one-level diversion disk and LNG immersed pump thereof of LNG immersed pump are provided, can well collect liquid, can well convert kinetic energy to pressure energy, when liquid rotating is changed direction, energy loss is little, has reduced greatly liquid hydraulic loss, has reduced the impact of liquid stream to runner, reduced the loss of energy, thereby immersed pump obtains higher efficiency.
The technical solution adopted in the utility model is as follows:
The one-level diversion disk of LNG immersed pump of the present utility model, comprise discoidal diversion disk body, in the portion of described diversion disk body limit, be evenly equipped with some spiral yarn shaped runners, the spirality direction of all runners is identical, and described runner is arranged in the portion of diversion disk body limit diversion disk body both sides are communicated with.
Owing to having adopted said structure, the runner of one-level diversion disk designs with the pattern of helix, can well collect liquid, can well convert kinetic energy to pressure energy, when liquid rotating is changed direction, energy loss is little, the suction port of the inflow sencond stage impeller that liquid that its one-level impeller is thrown away is very level and smooth, reduced greatly liquid hydraulic loss, reduce the impact of liquid stream to runner, reduced the loss of energy, thereby pump has obtained higher efficiency.
The one-level diversion disk of LNG immersed pump of the present utility model, described runner is six, is distributed on the same circumference of diversion disk body limit portion.
Owing to having adopted said structure, runner is too much, can make the liquid that passes through in each runner very few, thereby increases the resistance of fluid, can increase the impact of liquid stream to runner, the loss of energization; And runner is very few, can make the volume of whole one-level diversion disk increase, thereby the volume of whole LNG immersed pump is increased, in some position, can not be used, greatly dwindled its using scope, simultaneously this LNG immersed pump to coordinate ante-chamber and back cavity impeller collocation use, be therefore preferably 6 runners, do not increasing under the prerequisite of one-level diversion disk volume, reduced liquid hydraulic loss, reduce the impact of liquid stream to runner, reduced the loss of energy, thereby pump has obtained higher efficiency.
The one-level diversion disk of LNG immersed pump of the present utility model, described runner is helical structure, and its cross section of fluid channel is that the length of side is the square of 13mm, and described diversion disk body adopts stainless steel material to make.
Owing to having adopted said structure, cross section of fluid channel is the square of length of side 13mm, has so greatly increased liquid area of passage, thereby the flow of pump is increased; One-level diversion disk adopts stainless steel (OCr18Ni9) material to make, and stainless steel material has rust inhibition, and in LNG, shrink little and even, the advantages such as stable mechanical property, the life-span is permanent.
LNG immersed pump of the present utility model, comprise the pump housing, the rear end of the described pump housing is connected with motor upper cover, in the sidewall of the described pump housing, be provided with sidewall passage, described sidewall passage is by back cavity and flow liquid channel connection, in the described pump housing, be provided with the stator and the rotor shaft that cooperatively interact, described rotor shaft stretches in the active chamber of pump housing front end, it is characterized in that: in described active chamber, be provided with one-level diversion disk and be divided into ante-chamber and back cavity, the runner arranging on described one-level diversion disk is communicated with ante-chamber with back cavity, wherein in ante-chamber and back cavity, be respectively equipped with the impeller being placed on rotor shaft, described ante-chamber is provided with liquid entering hole, described liquid entering hole place is provided with the inducer being placed on rotor shaft.
Owing to having adopted said structure, stator coil winding can rotate by rotor driven axle, for whole immersed pump provides power source, rotor shaft impeller and inducer rotate simultaneously, thereby LNG can be drawn into immersed pump from liquid entering hole, first being induced wheel is drawn in ante-chamber, can realize supercharging for the first time through the impeller rotating, LNG after supercharging can enter into back cavity in the runner hole from one-level diversion disk, by the impeller in back cavity, carried out supercharging for the second time again, make the LNG in back cavity there is higher pressure, the hydrodynamic pressure after immersed pump is increased; Back cavity and sidewall channel connection are to flow liquid passage, and flow liquid passage is pooled to same liquid outlet and LNG can be discharged from liquid outlet.
LNG immersed pump of the present utility model, described flow liquid passage is four, is distributed in around the center line of motor upper cover; Described flow liquid passage is with respect to the center line angle of inclination a=25 ° of motor upper cover, and is intersected in liquid outlet.
Owing to having adopted said structure, liquid fluid runner quantity is 4, increases the effect of liquid overcurrent; The inclination of fluid pipe is designed to 25 °, will greatly improve the flatness of liquid in pump internal flow.
LNG immersed pump of the present utility model, the described pump housing, liquid entering hole, inducer, impeller, motor upper cover and liquid outlet all adopt stainless steel material to make.
Owing to having adopted said structure, make the parts in whole LNG immersed pump all adopt stainless steel material to make, stainless steel material has rust inhibition, and in LNG, shrinks evenly, the advantages such as stable mechanical property, the life-span is permanent.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
The one-level diversion disk of the LNG immersed pump of this practicability and LNG immersed pump thereof, can well collect liquid, can well convert kinetic energy to pressure energy, when liquid rotating is changed direction, energy loss is little, reduced greatly liquid hydraulic loss, reduce the impact of liquid stream to runner, reduced the loss of energy, thereby immersed pump has obtained higher efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of LNG immersed pump of the present utility model;
Fig. 2 is the structural representation of one-level diversion disk of the present utility model;
Fig. 3 is the plan view of one-level diversion disk of the present utility model;
Fig. 4 is the side view of Fig. 3;
Fig. 5 is the rear view of Fig. 3.
Mark in figure: 1-liquid entering hole, 2-inducer, 3-impeller, 4-one-level diversion disk, 5-rotor shaft, 6-stator, 7-sidewall passage, 8-flow liquid passage, 9-liquid outlet, 4-1-runner entrance, 4-2-runner exit, 4-3-runner.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As Fig. 2, shown in Fig. 3 and Fig. 4, the one-level diversion disk of LNG immersed pump of the present utility model, comprise discoidal diversion disk body, in the portion of described diversion disk body limit, be evenly equipped with runner 4-3 described in some spiral yarn shaped these examples of runner 4-3(and be preferably six, be distributed on the same circumference of diversion disk body limit portion), the spirality direction of all runner 4-3 is identical, and described runner 4-3 is arranged in the portion of diversion disk body limit diversion disk body both sides is communicated with, described runner 4-3 is provided with runner entrance 4-1 in the front of diversion disk body one side (ante-chamber one side in LNG immersed pump), in the back side of diversion disk body one side (back cavity one side in LNG immersed pump), be provided with runner exit 4-2, wherein said runner 4-3 is helical structure, and its runner 4-3 cross section is that the length of side is the square of 13mm, and described diversion disk body adopts stainless steel material to make.
The one-level diversion disk of LNG immersed pump of the present utility model, its runner designs with the pattern of helix, can well collect liquid, can well convert kinetic energy to pressure energy, when liquid rotating is changed direction, energy loss is little, the suction port of the inflow sencond stage impeller that liquid that its one-level impeller is thrown away is very level and smooth, reduced greatly liquid hydraulic loss, reduce the impact of liquid stream to runner, reduced the loss of energy, thereby pump has obtained higher efficiency.Cross section of fluid channel (also cross section) vertical with runner center line is the square of length of side 13mm, so greatly increased liquid area of passage, thereby the flow of pump is increased.One-level diversion disk adopts stainless steel (OCr18Ni9) material to make, and stainless steel material has rust inhibition, and in LNG, shrink little and even, the advantages such as stable mechanical property, the life-span is permanent.
LNG immersed pump of the present utility model, comprise the pump housing, the rear end of the described pump housing is connected with motor upper cover, in the sidewall of the described pump housing, be provided with sidewall passage 7, described sidewall passage 7 is communicated with back cavity and flow liquid passage 8, in the described pump housing, be provided with the stator 6 and rotor shaft 5 that cooperatively interact, described rotor shaft 5 stretches in the active chamber of pump housing front end, in described active chamber, be provided with above-mentioned one-level diversion disk 4 and be divided into ante-chamber and back cavity, the runner 4-3 arranging on described one-level diversion disk 4 is communicated with ante-chamber with back cavity, wherein in ante-chamber and back cavity, be respectively equipped with the impeller 3 being placed on rotor shaft 5, described ante-chamber is provided with liquid entering hole 1, described liquid entering hole 1 place is provided with the inducer 2 being placed on rotor shaft 5, wherein said flow liquid passage 8 is four, be distributed in around the center line of motor upper cover, described flow liquid passage 8 is with respect to the center line angle of inclination a=25 ° of motor upper cover, and is intersected in liquid outlet 9.
The described pump housing, liquid entering hole 1, inducer 2, impeller 3, motor upper cover and liquid outlet all adopt stainless steel material to make.
As shown in Figure 1, in LNG immersed pump of the present utility model, stator coil winding can rotate by rotor driven axle, for whole immersed pump provides power source, rotor shaft impeller and inducer rotate simultaneously, thereby LNG can be drawn into immersed pump from liquid entering hole, first being induced wheel is drawn in ante-chamber, can realize supercharging for the first time through the impeller rotating, LNG after supercharging can enter into back cavity in the runner hole from one-level diversion disk 4, by the impeller in back cavity, carried out supercharging for the second time again, make the LNG in back cavity there is higher pressure, hydrodynamic pressure after immersed pump is increased, back cavity and sidewall channel connection are to flow liquid passage, and flow liquid passage is pooled to same liquid outlet and LNG can be discharged from liquid outlet.The LNG immersed pump of employing motor upper cover of the present utility model, simple in structure, working flow is large, can increase work efficiency, and increases the flow of LNG, is applicable to various working environments.
Especially, the motor upper cover of LNG immersed pump of the present utility model, wherein all parts that can contact with LNG liquid all adopt stainless steel material to make, comprising upper cover body 10, flow liquid passage 8, liquid return pipe 9 and liquid outlet, the pump housing, impeller 3, liquid entering hole 1 and inducer 2, all adopt stainless steel material to make, stainless steel material has rust inhibition, and in LNG, shrink evenly, the advantages such as stable mechanical property, the life-span is permanent.
The motor upper cover of LNG immersed pump of the present utility model and LNG immersed pump thereof, can smoothly the fluid in pump housing sidewall passage be transported in next runner, reduce the resistance of flow of fluid, thereby reduce the loss of liquid energy, can effectively increase work efficiency, be applicable to various working environments.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
- The one-level diversion disk of 1.LNG immersed pump, it is characterized in that: it comprises discoidal diversion disk body, in the portion of described diversion disk body limit, be evenly equipped with some spiral yarn shaped runners (4-3), the spirality direction of all runners (4-3) is identical, and described runner (4-3) is arranged in the portion of diversion disk body limit diversion disk body both sides are communicated with.
- 2. the one-level diversion disk of LNG immersed pump as claimed in claim 1, is characterized in that: described runner (4-3) is six, is distributed on the same circumference of diversion disk body limit portion.
- 3. the one-level diversion disk of LNG immersed pump as claimed in claim 1 or 2, is characterized in that: described runner (4-3) is helical structure, and its runner (4-3) cross section is that the length of side is the square of 13mm, and described diversion disk body adopts stainless steel material to make.
- 4. a LNG immersed pump that adopts the described one-level diversion disk of one of claims 1 to 3, comprise the pump housing, the rear end of the described pump housing is connected with motor upper cover, in the sidewall of the described pump housing, be provided with sidewall passage (7), described sidewall passage (7) is communicated with back cavity and flow liquid passage (8), in the described pump housing, be provided with the stator (6) and rotor shaft (5) that cooperatively interact, described rotor shaft (5) stretches in the active chamber of pump housing front end, it is characterized in that: in described active chamber, be provided with one-level diversion disk (4) and be divided into ante-chamber and back cavity, the upper runner (4-3) arranging of described one-level diversion disk (4) is communicated with ante-chamber with back cavity, wherein in ante-chamber and back cavity, be respectively equipped with the impeller (3) being placed on rotor shaft (5), described ante-chamber is provided with liquid entering hole (1), described liquid entering hole (1) locates to be provided with the inducer (2) being placed on rotor shaft (5).
- 5. LNG immersed pump as claimed in claim 4, is characterized in that: described flow liquid passage (8) is four, is distributed in around the center line of motor upper cover; Described flow liquid passage (8) is with respect to the center line angle of inclination a=25 ° of motor upper cover, and is intersected in liquid outlet (9).
- 6. the LNG immersed pump as described in claim 4 or 5, is characterized in that: the described pump housing, liquid entering hole (1), inducer (2), impeller (3), motor upper cover and liquid outlet all adopt stainless steel material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320700573.6U CN203532306U (en) | 2013-11-08 | 2013-11-08 | Primary flow guide disc for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320700573.6U CN203532306U (en) | 2013-11-08 | 2013-11-08 | Primary flow guide disc for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532306U true CN203532306U (en) | 2014-04-09 |
Family
ID=50418519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320700573.6U Expired - Lifetime CN203532306U (en) | 2013-11-08 | 2013-11-08 | Primary flow guide disc for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532306U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895800A (en) * | 2015-05-19 | 2015-09-09 | 淄博博山绿源燃气设备有限公司 | Multi-stage submersible pump system |
| CN107762979A (en) * | 2017-10-19 | 2018-03-06 | 江苏大学 | A kind of compact liquefied natural gas immersed pump guide vane structure |
| CN108457868A (en) * | 2018-05-25 | 2018-08-28 | 苏州优德通力科技有限公司 | A kind of anhydrous self-priming distinguishes the super-silent intelligent water pump of flow |
-
2013
- 2013-11-08 CN CN201320700573.6U patent/CN203532306U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895800A (en) * | 2015-05-19 | 2015-09-09 | 淄博博山绿源燃气设备有限公司 | Multi-stage submersible pump system |
| CN104895800B (en) * | 2015-05-19 | 2017-11-17 | 淄博博山绿源燃气设备有限公司 | Multistage immersed pump system |
| CN107762979A (en) * | 2017-10-19 | 2018-03-06 | 江苏大学 | A kind of compact liquefied natural gas immersed pump guide vane structure |
| CN108457868A (en) * | 2018-05-25 | 2018-08-28 | 苏州优德通力科技有限公司 | A kind of anhydrous self-priming distinguishes the super-silent intelligent water pump of flow |
| CN108457868B (en) * | 2018-05-25 | 2019-07-05 | 苏州优德通力科技有限公司 | A kind of anhydrous self-priming distinguishes the super-silent intelligent water pump of water flow |
| WO2019223047A1 (en) * | 2018-05-25 | 2019-11-28 | 苏州优德通力科技有限公司 | Anhydrous self-priming super-silent intelligent water pump for distinguishing water flow |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104454560A (en) | Efficient LNG immersed pump | |
| CN102251991B (en) | Axial force balance device and method for shield pump | |
| CN103629118B (en) | A kind of riser permanent magnet shield pump | |
| BR112014018161B1 (en) | ENERGY STORAGE AND POWER CONVERSION DEVICE | |
| CN203532306U (en) | Primary flow guide disc for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof | |
| CN103573651B (en) | LNG immersed pump | |
| CN104329267A (en) | Low-temperature submerged pump and motor thereof | |
| CN105811609B (en) | Submergence type deep cooling permanent magnetism electric pump | |
| CN203548353U (en) | LNG immersed pump provided with motor heat dissipation circulating structure | |
| CN203548252U (en) | LNG immersed pump | |
| CN204419688U (en) | A kind of centrifugal pump composite impeller | |
| CN203404122U (en) | Impeller ring sealing device of water pump and impeller ring used for impeller ring sealing device | |
| CN203532317U (en) | Impeller for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof | |
| CN203548313U (en) | Sealing structure of LNG immersed pump and LNG immersed pump using same | |
| CN203532307U (en) | Motor upper cover for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof | |
| CN101603540B (en) | Low-temperature-rise energy-saving total-head electric diving pump | |
| CN207420948U (en) | A kind of durable corrosion resistant pipeline mechanism | |
| CN204299890U (en) | A kind of LNG immersed pump | |
| CN203532335U (en) | Motor lower cover for liquefied natural gas (LNG) immersed pump and LNG immersed pump thereof | |
| CN103398020A (en) | Water pump wear-ring sealing device and wear-ring thereof | |
| CN203783905U (en) | Canned motor pump for conveying easy-to-vaporize media | |
| CN203685671U (en) | Inducer of LNG (Liquefied Natural Gas) submerged pump and LNG submerged pump | |
| CN203394823U (en) | Submersible sewage pump with cutting function | |
| CN204003509U (en) | With the LNG immersed pump of motor cooling recirculation system and bearing self-lubricating structure | |
| CN105402162A (en) | Hydraulic design method of torispherical pump body for nuclear main pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |