CN104653499B - A kind of containment atmospheric monitoring system blower fan - Google Patents
A kind of containment atmospheric monitoring system blower fan Download PDFInfo
- Publication number
- CN104653499B CN104653499B CN201510069428.6A CN201510069428A CN104653499B CN 104653499 B CN104653499 B CN 104653499B CN 201510069428 A CN201510069428 A CN 201510069428A CN 104653499 B CN104653499 B CN 104653499B
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- Prior art keywords
- motor
- fire
- impeller
- blower fan
- spiral case
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal 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
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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 present invention discloses a kind of containment atmospheric monitoring system blower fan, including spiral case, fire-proof motor, motor radiating cover, back side panel, strong back ward impeller and collector ring, wherein described strong back ward impeller and collector ring are arranged in the spiral case, and the collector ring is located at the strong back ward impeller rear portion, the back side panel is arranged on the spiral case rear portion, the fire-proof motor is arranged on the back side panel, the strong back ward impeller is connected in the rotating shaft of fire-proof motor, the collector ring is fixed on back side panel by fastener, the motor radiating cover is covered on outside the fire-proof motor, and realize that static seal couples with spiral case side, explosion-proof motor junction box is provided with above the motor radiating cover, fire-proof motor is connected by connecting line.The invention provides a kind of containment atmospheric monitoring system blower fan, its aerodynamic performance, antidetonation is irradiated, accident, the security such as explosion-proof complies fully with requirement, fully achieves the autonomy-oriented of blower fan.
Description
Technical field
The present invention relates to a kind of blower fan, more particularly to a kind of safety applied to advanced pressurized water reactor nuclear power generating sets Hua Longyi
Shell atmospheric monitoring system blower fan.
Background technology
In advanced compacted clay liners, blower fan is mainly used in air draft and air flow in nuclear power generating sets, existing two
The blower fan used in half nuclear power fan group of generation is common centrifugal blower, however as million millions advanced pressurized water reactor nuclear power generating sets
The promotion of " No. Hua Longyi " project, centrifugal blower common at present can not meet requirement, and concrete reason is：
The motor exposure of existing centrifugal blower in atmosphere, exposes aerial fan operation not in normal conditions
There is problem, but occur once reactor after loss of-coolant accident (LOCA) (LOCA), due to a large amount of boric acid sprays can be carried out at the top of containment
Reactor cooling is handled, now boric acid can directly overlay motor surface, and related data shows：It is existing all in the whole world
Structure electric machine can not meet the requirement of degree of protection under this operating mode, because boric acid, which can largely enter motor internal, causes electricity
Machine fails so that blower fan is out of service, and resulting in blower fan can not extract out because boric acid runs into generation after high-temperature gas in reactor
A large amount of hydrogen, with increasing for amounts of hydrogen, containment will explode, such as Fukushima, Japan nuclear power plant accident.
In addition, the spiral case of existing centrifugal blower uses square welded structure, and required in " No. Hua Longyi " project
Reactor occurs after loss of-coolant accident (LOCA) (LOCA), and blower fan needs to keep 10 minutes No leakages under conditions of pressure-bearing 0.63MPa, and this is just
So that either steel plate or weld seam can not meet this requirement to common steel plate welding square structure, it is defeated in the event of leakage fan
The gas sent -- hydrogen will be combined directly with high-temperature gas in reactor, now can also occur explosion accident.
In addition, existing centrifugal blower uses forward-bent impeller, due to unavoidably appearing in camel in its performance curve
Peak, therefore operation is easy to " surge " operating mode for causing blower fan to damage under the conditions of multi-state.
" active and passive " advanced design theory, the key technical indexes and peace has been merged in " No. Hua Longyi " project simultaneously
China and global newest safety requirements are met all referring to mark, containment adds the machine utilization for the emergency measure under accident,
It is required that blower fan is in the case where volume, power of motor, weight keep constant, the performance parameter increase 20% of blower fan, resistance to irradiation agent
10 times of amount increase, antidetonation acceleration increase in the case of 1.5 times, but this requirement causes existing state, inside and outside similar products
This requirement can not be met.
The content of the invention
Goal of the invention：In order to solve the deficiencies in the prior art, for a series of requirements in Hua Longyi projects to blower fan,
The invention provides a kind of containment atmospheric monitoring system blower fan, its aerodynamic performance, antidetonation, irradiation is accident, explosion-proof
Requirement is complied fully with etc. security, the autonomy-oriented of blower fan is fully achieved.
To achieve the above object, the present invention proposes following technical scheme：A kind of containment atmospheric monitoring system blower fan, including
Spiral case, fire-proof motor, motor radiating cover, back side panel, strong back ward impeller and collector ring, wherein the strong back ward impeller and collector ring
In the spiral case, and the collector ring is located at the strong back ward impeller rear portion, and the back side panel is arranged on the spiral case
Rear portion, the fire-proof motor is arranged on the back side panel, and the strong back ward impeller is connected in the rotating shaft of fire-proof motor, described
Collector ring is fixed on back side panel by fastener, and the motor radiating cover is covered on outside the fire-proof motor, and with spiral case side
Face realizes that static seal couples, and explosion-proof motor junction box is provided with above the motor radiating cover, fire-proof motor is connected by connecting line.
The strong back ward impeller has wheel hub, front shroud, back shroud and impeller, and the front shroud and back shroud are arranged on leaf
Both sides are taken turns, the wheel hub is arranged on back shroud, and is connected with the rotating shaft of fire-proof motor, the front shroud center is provided with air intake
Hole, the impeller has the plate blade of plural number bending.
The spiral case has front side board, and back side panel, blade passage, air outlet, the front side board center is provided with air inlet, institute
Air outlet is stated to be connected with the blade passage.
The section of the blade passage is the arc transition rectangle that chamfering is R15, and the section of the air outlet is circle.
The rectification ring structure is right angle cirque structure, and facing directly with periphery and perpendicular to periphery is described straight
Stationary plane is is installed in face, for being directly connected with back side panel.
Guarantee is needed when the collector ring is installed and has 5mm safety clearance between back ward impeller and back side panel by force, with
Prevent air-flow enters from forming vortex.
The collector ring material is 316L stainless steels.
The motor radiating cover is cylindrical structural, and afterbody end socket uses face molded line for 1:1.5 elliptic arc end sockets.
The motor radiating cover is the space with not less than 0.8 times of motor center height between fire-proof motor so that
There is certain radiating cavity between fire-proof motor and motor radiating cover.
The spiral case lower end is additionally provided with dewatering orifice.
Disclosed containment atmospheric monitoring system blower fan, is mainly used in the autonomous advanced pressure of the millions of three generations million
Water-water reactor nuclear power generating sets Hua Longyi reactors, it act as：The radioactive level of the interior fission inert gas of reduction containment simultaneously reaches
To limit value, it is ensured that staff can enter in containment；Negative pressure small in containment is maintained, to avoid air from leaking outside；
It is used for purifying containment air after loss of-coolant accident (LOCA), the radioactive level of air in containment is reduced in the range of permission, and
Discharged；Air in containment is sampled, mixed, and air in containment is recycled, prevents hydrogen from accumulating,
The concentration of hydrogen in containment is kept in allowed limits, while the blower fan is core level single suction explosion-proof antidetonation single suction centrifugation wind
Machine, it is desirable to which pressure is high, size is small, accident conditions is directly initiated in lower 3 seconds, with high irradiation, hydrogen explosion-proof (CT4 of Ex d II),
High safety, high anti-seismic, it is efficient, highly reliable in terms of requirement, to improve full reliability, casing is core level pressure-bearing steel-casting knot
Structure, motor is totally-enclosed to be installed, and is radiated by pressure-bearing radiating over body case radiation.
Security during the blower fan directly affects normal reactor operation and under the conditions of loss of-coolant accident (LOCA) (LOCA) with it is reliable
Property.
Compared with prior art, a kind of disclosed containment atmospheric monitoring system blower fan, its aerodynamics
All parameters such as performance, antidetonation, irradiation, the continuous operation of accident simulation, explosion-proof are satisfied by or every operation better than No. Hua Longyi
It is required that；
Heat dissipating housing is used in outside motor, effective shield electric machine prevents that boric acid is drenched into motor so that motor stops after loss of-coolant accident (LOCA)
Only work, while having some heat-dissipating spaces between heat dissipating housing and motor, effectively radiated.
Using " back ward impeller " for being less prone to overload phenomenon, characteristic curve of fan is not present without obvious hump
" surge " operating mode for easily causing blower fan to damage, while using circular section spiral case and rectification loop technique, being more beneficial for gas
Acceleration pressurization in spiral case prevents vortex from being formed, and blower interior loss is less than generally square shaped section spiral case and without rectification ring structure
Conventional blower.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is explosive view of the invention；
Fig. 3 is the structural representation of strong back ward impeller of the present invention；
Fig. 4 is the structural representation of spiral case of the present invention.
Embodiment
Below in conjunction with the accompanying drawing of the present invention, the technical scheme to the embodiment of the present invention carries out clear, complete description.
As shown in Figure 1 and 2, a kind of disclosed containment atmospheric monitoring system blower fan, meets Hua Longyi projects
In to blower fan each requirement, concrete structure include spiral case 1, fire-proof motor 2, motor radiating cover 3, back side panel 4, strong back ward impeller
5 and collector ring 6, wherein the strong back ward impeller 5 and collector ring 6 are embedded in spiral case 1, and the collector ring 6 be located at it is described it is strong after
The rear portion of bending impeller 5, the back side panel 4 is arranged on the rear portion of spiral case 1, the strong back ward impeller 5 and collector ring 6 is covered on described
In spiral case 1, the fire-proof motor 2 is arranged on the back side panel 4, and the strong back ward impeller 5 is connected to the rotating shaft of fire-proof motor 2
On, the collector ring 6 is fixed on back side panel 4 by fastener, and the motor radiating cover 3 is covered on outside the fire-proof motor 2,
And realize that static seal couples with the side of spiral case 1, the top of motor radiating cover 3 is provided with explosion-proof motor junction box 17, passes through connection
Line connects fire-proof motor 2.
As shown in figure 3, the strong back ward impeller 5 has wheel hub 8, front shroud 9, back shroud 10 and impeller 11, the protecgulum
Plate 9 and back shroud 10 are arranged on the both sides of impeller 11, and the wheel hub 8 is arranged on back shroud 10, and connect with the rotating shaft of fire-proof motor 2
Connect, the impeller 11 has the plate blade of plural number bending, the center of front shroud 9 is provided with fresh air inlet, and air-flow enters from fresh air inlet
Enter, with the rotation of impeller, air-flow is from the gap discharge between plate blade under the action of the centrifugal force.
As shown in figure 4, the spiral case 1 uses ZG270-500 cast steel castings, it has front side board 13, back side panel 4, blade
Runner 12, air outlet 14, the center of front side board 13 is provided with air inlet 7, and the air outlet 14 is connected with the blade passage 12,
Air-flow enters in impeller 11 after air inlet suction, wherein the arc transition that it is R15 that the section of the blade passage 12, which is chamfering,
Rectangle, the section of the air outlet 14 is circle, and the lower end of spiral case 1 is additionally provided with dewatering orifice 16.
The collector ring 6 is 316L stainless steels from material, can play explosion-proof isolation effect, and its structure is right angle annulus
Shape structure, facing directly with periphery and perpendicular to periphery, the effect of the periphery is that isolation air-flow enters back shroud 10
It is described to face directly to install stationary plane, for directly coupling with back side panel 4, while described so as to form vortex between back side panel 4
Collector ring needs the safety clearance for ensureing to have 5mm between back shroud 10 and back side panel 4 when mounted, to prevent air-flow from entering
Vortex is formed between back shroud and back side panel.
It is covered on outside the fire-proof motor motor radiating cover 3, and is supported by base 15, and the motor dissipates
The generally cylindrical structural of heat cover 3, afterbody end socket uses face molded line for 1:1.5 elliptic arc end sockets, it has between fire-proof motor
There is the space not less than 0.8 times of motor center height so that there is certain radiating cavity between fire-proof motor and motor radiating cover.
Disclosed containment atmospheric monitoring system blower fan, its operation principle is：Fire-proof motor works, and drives strong
Back ward impeller is rotated, and external air flow is sucked by air inlet and enters impeller, air-flow rotates into blade passage by impeller,
Accelerate acting and the rectified action of collector ring through meridian plane, discharged by air outlet, due to using strong back ward impeller so that air-flow
Be not in overload phenomenon after, characteristic curve of fan without obvious hump, while increase collector ring cause portion gas due to
The barrier of collector ring cannot be introduced between back shroud of impeller and back side panel so as to can not form vortex, thus by the rotation of impeller from
Mental and physical efforts change into effective static pressure, therefore effectively reduce the generation of vortex, have not only effectively restrained the big pressure operation of low discharge
When surge phenomenon generation, while also effectively increase blower pressure and efficiency, while blade passage section is R15 fillet mistakes
Rectangular configuration is crossed, surrounding corner carries out chamfered so that the situation for the more vortex that original right angle is also easy to produce is obtained effectively
Suppress, and with round-corner transition square-section intensity be much larger than conventional rectangular structural section, while meet zero leakage with
Intensity requirement.
Blower fan of the present invention, its technological parameter is：
Air quantity：1800 m3/h
Blast：660daPa（Total head, ρ=1.21kg/m3）
Minimum efficiency：66%
Highest intake air temperature：80℃
Blower fan pattern：Centrifuge direct connection single suction ventilation blower（Left 90 ° of formulas）；
Safe class：LS
Antidetonation classification：lA
Quality guarantee grade：Q2
Cleannes：B
Explosive-proof grade：Ex dII CT4
40 years γ intergal doses：1.5×10^5 Gy
Antidetonation ground horizontal acceleration：0.3g(SL-2)
Fan design service life：40 years
During normal operation：Blower fan intermitten service, pumped (conveying) medium is air, at normal atmospheric pressure with 20 DEG C~45 DEG C temperature
Degree and relative humidity is under 70% air, annual work 180 hours averagely run more than 6 years, and close rate is 25 μ Gy/h.
During design basis accident condition is run：Blower fan is continuously run, and pumped (conveying) medium is containing radioactive air, it is desirable to every
Its work 24 hours, continuous operating time is no less than 6 months.
In addition Validity Test is carried out by the performance parameter to blower fan, specific test structure is with reference to table 1：
Table 1
The technology contents and technical characteristic of the present invention have revealed that as above, but those skilled in the art still may base
Make a variety of replacements and modification without departing substantially from spirit of the present invention in the announcement of the present invention, therefore, the scope of the present invention should not be limited
In the content disclosed in embodiment, and various replacements and modification without departing substantially from the present invention should be included, and be present patent application right
It is required that being covered.
Claims (4)
1. a kind of containment atmospheric monitoring system blower fan, it is characterised in that：Including spiral case, fire-proof motor, motor radiating cover, rear side
Plate, strong back ward impeller and collector ring, wherein the strong back ward impeller and collector ring are arranged in the spiral case, and the collector ring
Positioned at the strong back ward impeller rear portion, the back side panel is arranged on the spiral case rear portion, and the fire-proof motor is installed in the rear
On side plate, the strong back ward impeller is connected in the rotating shaft of fire-proof motor, and the collector ring is fixed on back side panel by fastener
On, the motor radiating cover is covered on outside the fire-proof motor, and realizes that static seal couples with spiral case side, the motor radiating
Cover top is provided with explosion-proof motor junction box, and fire-proof motor is connected by connecting line, and the strong back ward impeller has wheel hub, protecgulum
Plate, back shroud and impeller, the front shroud and back shroud are arranged on impeller both sides, and the wheel hub is arranged on back shroud, and with
The rotating shaft connection of fire-proof motor, the front shroud center is provided with fresh air inlet, and the impeller has the plate blade of plural number bending, institute
Motor radiating cover is stated for cylindrical structural, afterbody end socket uses face molded line for 1:1.5 elliptic arc end sockets, the spiral case has front side
Plate, back side panel, blade passage, air outlet, the front side board center is provided with air inlet, and the air outlet connects with the blade passage
Connect, the section of the blade passage is the arc transition rectangle that chamfering is R15, and the section of the air outlet is circle, described whole
Stream ring structure is right angle cirque structure, and facing directly with periphery and perpendicular to periphery is described to face directly to install stationary plane,
Need to ensure for being directly connected with back side panel, when the collector ring is installed and have 5mm between back ward impeller and back side panel by force
Safety clearance, with prevent air-flow enter form vortex.
2. containment atmospheric monitoring system blower fan according to claim 1, it is characterised in that：The collector ring material is
316L stainless steels.
3. containment atmospheric monitoring system blower fan according to claim 1, it is characterised in that：The motor radiating cover be with
There is the space not less than 0.8 times of motor center height so that have between fire-proof motor and motor radiating cover between fire-proof motor
There is certain radiating cavity.
4. containment atmospheric monitoring system blower fan according to claim 1, it is characterised in that：The spiral case lower end is additionally provided with
Dewatering orifice.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069428.6A CN104653499B (en) | 2015-02-10 | 2015-02-10 | A kind of containment atmospheric monitoring system blower fan |
| PCT/CN2015/092646 WO2016127659A1 (en) | 2015-02-10 | 2015-10-23 | Containment building atmospheric monitoring system fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069428.6A CN104653499B (en) | 2015-02-10 | 2015-02-10 | A kind of containment atmospheric monitoring system blower fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104653499A CN104653499A (en) | 2015-05-27 |
| CN104653499B true CN104653499B (en) | 2017-09-22 |
Family
ID=53245011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510069428.6A Active CN104653499B (en) | 2015-02-10 | 2015-02-10 | A kind of containment atmospheric monitoring system blower fan |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104653499B (en) |
| WO (1) | WO2016127659A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653499B (en) * | 2015-02-10 | 2017-09-22 | 南通大通宝富风机有限公司 | A kind of containment atmospheric monitoring system blower fan |
| CN107620719A (en) * | 2017-11-14 | 2018-01-23 | 浙江金盾风机股份有限公司 | Atmospheric monitoring system ventilation equipment in a kind of containment |
| CN108438909A (en) * | 2018-04-03 | 2018-08-24 | 广州市胡氏标签印刷有限公司 | A kind of conveying device for sticky film, stationery particle |
| CN108799156A (en) * | 2018-06-19 | 2018-11-13 | 沈阳世杰电器有限公司 | Air blast cooling high temperature resistant insert-type centrifugal fan |
| CN109101729B (en) * | 2018-08-13 | 2023-04-07 | 张阳 | Forming die for elliptical arc and arc seal head and elliptical arc and arc seal head |
| CN109098993A (en) * | 2018-10-23 | 2018-12-28 | 南京溧水丰盛机电制造有限公司 | A kind of flame-proof type axial flow blower |
| JP7199220B2 (en) * | 2018-12-27 | 2023-01-05 | 山洋電気株式会社 | waterproof blower fan |
| CN109723546B (en) * | 2019-01-11 | 2024-02-09 | 福建群峰机械有限公司 | Motor sweeper fan power system and control method thereof |
| CN111486122B (en) * | 2020-04-23 | 2024-03-19 | 嵊州市浙江工业大学创新研究院 | Intelligent integrated kitchen surge monitoring protection system and method |
| CN113062876B (en) * | 2021-05-11 | 2024-03-15 | 丹阳市腾黄钢管镀锌有限责任公司 | Active shaft sealing device of anti-corrosion and anti-poison high-pressure centrifugal fan |
| CN113464460A (en) * | 2021-08-04 | 2021-10-01 | 镇江市丹徒区粮机厂有限公司 | Centrifugal fan applied to severe working conditions |
| CN114251765A (en) * | 2021-12-28 | 2022-03-29 | 王有权 | Multifunctional exhaust device |
| CN114508500A (en) * | 2021-12-31 | 2022-05-17 | 烟台润丰新能源发展有限公司 | Fan audio and video monitoring system |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2016127659A1 (en) | 2016-08-18 |
| CN104653499A (en) | 2015-05-27 |
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