JP2573385B2 - Air supply for ventilation equipment - Google Patents
Air supply for ventilation equipmentInfo
- Publication number
- JP2573385B2 JP2573385B2 JP1914290A JP1914290A JP2573385B2 JP 2573385 B2 JP2573385 B2 JP 2573385B2 JP 1914290 A JP1914290 A JP 1914290A JP 1914290 A JP1914290 A JP 1914290A JP 2573385 B2 JP2573385 B2 JP 2573385B2
- Authority
- JP
- Japan
- Prior art keywords
- air supply
- air
- casing
- ventilation equipment
- cooler
- 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
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- Central Air Conditioning (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明はたとえば原子力発電所に設置されている換気
設備用給気装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to an air supply device for ventilation equipment installed in a nuclear power plant, for example.
（従来の技術） 一般に原子力発電所の換気設備では原子炉建屋内に配
置される発電設備の安定運転に支障を来さぬように発電
設備が収容されている室を所定内の温度に保つことおよ
び当該発電所に勤務する所員が作業を行う上で適切な作
業環境が得られるように空気汚染に起因する放射線被爆
を防護するために適性な換気量を確保している。このう
ち、換気設備の換気量決定に支配的な要因は発電設備か
ら発生する熱量を除去し、室温を所定の温度に保つこと
にある。(Conventional technology) Generally, in a ventilation facility of a nuclear power plant, a room in which the power generation facility is housed is maintained at a predetermined temperature so as not to hinder stable operation of the power generation facility located in the reactor building. In addition, appropriate ventilation is secured to protect radiation exposure due to air pollution so that the personnel working at the power plant can work properly. Among these factors, the dominant factor in determining the ventilation amount of the ventilation equipment is to remove the heat generated from the power generation equipment and keep the room temperature at a predetermined temperature.
原子力発電所ではその室温空気は放射性物質によって
たえず汚染される可能性があるため、一度、室内に通気
された空気は再利用することなく排気筒から放出する方
式を採用している。そのため、換気設備の風量は大容量
のものとなっている。At a nuclear power plant, the room temperature air may be constantly polluted by radioactive materials, so the air once ventilated into the room is discharged from the exhaust stack without reuse. Therefore, the air volume of the ventilation equipment is large.
このような換気設備にあって給気装置は第４図に示す
ように構成されている。In such a ventilation system, the air supply device is configured as shown in FIG.
すなわち、外気取入口１を有する第１ケーシング２は
上流側に配置され、この第１ケーシング２内には内部に
流入される外気を清浄化するエアフイルタ３が収容され
ている。第１ケーシング２の下流側には連結風道管４、
風量調整装置５、伸縮継手６、送風機７、伸縮継手８お
よび逆流防止ダンパ９を介して第２ケーシング10が配置
されている。この第２ケーシング10には冬季暖房用の給
気加熱器11、夏期冷房用給気冷却器12がそれぞれ順次配
列され収容される。That is, the first casing 2 having the outside air intake 1 is arranged on the upstream side, and the first casing 2 houses an air filter 3 for purifying outside air flowing into the inside. On the downstream side of the first casing 2, there is a connecting wind path tube 4,
The second casing 10 is disposed via the air volume adjusting device 5, the expansion joint 6, the blower 7, the expansion joint 8, and the backflow prevention damper 9. In the second casing 10, an air supply heater 11 for winter heating and an air supply cooler 12 for summer cooling are sequentially arranged and accommodated.
給気加熱器11は第２ケーシング10の下流側の風道管14
を通過する空気温度を温度調節計15aで計測し、計測し
た温度に応じて給気加熱器11への蒸気量を加減し、温度
調節された空気を供給するものである。給気冷却器12は
第２ケーシング10の下流側から風道14を通過する空気温
度を温度調節計15bで計測し、計測した温度に応じて給
気冷却器12への冷水量を調節し、温度調節された空気を
供給するものである。The air supply heater 11 is connected to the air duct 14 downstream of the second casing 10.
The temperature of the air passing therethrough is measured by the temperature controller 15a, the amount of steam to the air supply heater 11 is adjusted according to the measured temperature, and the temperature-controlled air is supplied. The air supply cooler 12 measures the temperature of the air passing through the wind path 14 from the downstream side of the second casing 10 with a temperature controller 15b, and adjusts the amount of cold water to the air supply cooler 12 according to the measured temperature. It supplies air whose temperature has been adjusted.
前述したように第１のケーシング２と第２ケーシング
10とは並列に複数の風道４により連絡されており、この
風道管４には屋外空気の取入口を調節する風量調整装置
５、伸縮継手６、送風機７、伸縮継手８、逆流防止用ダ
ンパ９が順次複数に並列配置されている。伸縮継手６お
よび８は送風機７の作用による振動が他の部位に伝達さ
れるのを防止している。As described above, the first casing 2 and the second casing
10 is connected in parallel with a plurality of air paths 4, and the air path pipe 4 has an air flow adjusting device 5 for adjusting the intake of outdoor air, an expansion joint 6, a blower 7, an expansion joint 8, and a backflow prevention. A plurality of dampers 9 are sequentially arranged in parallel. The expansion joints 6 and 8 prevent the vibration caused by the action of the blower 7 from being transmitted to other parts.
送風機７自体は動的機器であるから原子力発電所の安
定運転、信頼性を維持するため複数台並設されており、
そのうち少なくとも１台は予備機として待機され、運転
中に送風機７が故障した場合には予備機が自動的に切替
起動されるようになっている。Since the blower 7 itself is a dynamic device, a plurality of blowers 7 are arranged side by side to maintain stable operation and reliability of the nuclear power plant.
At least one of them is on standby as a spare machine, and when the blower 7 breaks down during operation, the spare machine is automatically switched and started.
（発明が解決しようとする課題） 原子力発電所の給気装置は室内を所定の温度に保ち、
室内に一度通気された空気はそのまま放出される。この
ことから、換気設備の風量及び風道管による圧力損失は
非常に大きく大形の送風機を設置する必要がある。(Problems to be solved by the invention) The air supply device of a nuclear power plant keeps the room at a predetermined temperature,
The air once ventilated into the room is released as it is. For this reason, the air volume of the ventilation equipment and the pressure loss due to the air duct are very large, and it is necessary to install a large blower.
例えば1100MWe級のBWR（沸騰水型）原子力発電所の原
子炉建屋の送風機は風量20万m3/h静圧250mmAg程度の送
風機を設置している。For example, the blower in the reactor building of a 1100 MWe-class BWR (boiling water) nuclear power plant has a blower with a wind volume of 200,000 m 3 / h and a static pressure of about 250 mmAg.
このため、この送風機７の出口近傍に配置される第２
ケーシング10内は、気流分布差が大きく偏流を起しやす
い状態になると給気加熱器11および冷却器12に均一に風
が当らなくなり建屋内各室へ供給する適正な給気温度が
維持できなくなる課題がある。For this reason, the second air conditioner arranged near the outlet of the blower 7
In the casing 10, when the airflow distribution difference is large and the airflow tends to cause a drift, the air does not uniformly hit the air supply heater 11 and the cooler 12, so that the appropriate air supply temperature to be supplied to each room in the building cannot be maintained. There are issues.
本発明は上記課題を解決するためになされたもので、
たとえば原子力発電所の換気設備用給気装置における第
２ケーシング内の加熱器および冷却器に均一に風が当た
るように整流板を配置し、この整流板によって整流効果
が大きくかつ低圧力損失の換気設備用給気装置を提供す
ることにある。The present invention has been made to solve the above problems,
For example, a rectifying plate is disposed so that air can be uniformly applied to a heater and a cooler in a second casing in an air supply device for ventilation equipment of a nuclear power plant, and the rectifying plate has a large rectifying effect and provides ventilation with low pressure loss. An object of the present invention is to provide an air supply device for equipment.
［発明の構成］ （課題を解決するための手段） 本発明は上流側にエアフィルタが収容された外気取入
口を有する第１ケーシングと、この第１ケーシングの下
流側に接続された給気加熱器および給気冷却器が収次に
収容された第２ケーシングとからなる換気設備用給気装
置において、前記第２ケーシング内に収容された給気加
熱器および給気冷却器の前方に開口率約30％の開口を有
する多孔整流板を設けてなることを特徴とする。[Constitution of the Invention] (Means for Solving the Problems) The present invention relates to a first casing having an outside air intake in which an air filter is accommodated on the upstream side, and air supply heating connected to a downstream side of the first casing. An air supply device for ventilation equipment, comprising an air heater and an air supply cooler, and a second casing housed in the air intake, wherein an opening ratio is provided in front of the air supply heater and the air supply cooler housed in the second casing. It is characterized in that a perforated straightening plate having an opening of about 30% is provided.
（作 用） 第２ケーシング内の給気加熱器および給気冷却器の前
方、つまり外気取入側に多孔整流板を設けることによっ
て、給気加熱器および給気冷却器内の伝達コイルを通過
する風速を設定範囲内に均一に整流することができる。(Operation) By providing a porous rectifying plate in front of the air supply heater and the air supply cooler in the second casing, that is, on the outside air intake side, it passes through the transmission coil in the air supply heater and the air supply cooler. It is possible to rectify the generated wind speed uniformly within the set range.
なお、整流板の開口率が30％を大幅に上下した場合に
は十分な整流効果が得られない。If the aperture ratio of the rectifying plate is significantly higher or lower than 30%, a sufficient rectifying effect cannot be obtained.
また、前記整流板を波形状に折り曲げて形成した多孔
式波形板は面強度が向上し、多大な風圧を受けた場合で
もその形状を維持している。In addition, a porous corrugated plate formed by bending the straightening plate into a wave shape has improved surface strength and maintains its shape even when subjected to a large wind pressure.
（実施例） 第１図から第３図を参照しながら本発明に係る換気設
備用給気装置の一実施例を説明する 第１図は本発明の全体を示す構成図で、第２図は多孔
整流板の横断面図、第３図は第２図の平面図である。(Embodiment) One embodiment of an air supply device for ventilation equipment according to the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a configuration diagram showing the whole of the present invention, and FIG. FIG. 3 is a plan view of FIG. 2, and FIG.
すなわち、第１図中符号２は屋外空気を取り入れる外
気取入口１を有する第１のケーシングを示している。こ
の第１ケーシング２は上流側に配置され、内部に流入さ
れる外気を清浄化るエアフィルタ３が収容されている。That is, reference numeral 2 in FIG. 1 denotes a first casing having an outside air intake 1 for taking in outdoor air. The first casing 2 is arranged on the upstream side, and houses an air filter 3 for purifying outside air flowing into the inside.
また、この第１ケーシング２の下流側には第２ケーシ
ング10が配置されている。この第２ケーシング10には冬
季暖房用の給気加熱器11、夏期冷房用の給気冷却器12が
それぞれ順次収容されている。この給気加熱器11及び冷
却器12の前方には均一な気流を維持するための整流板13
が設けられている。Further, a second casing 10 is disposed downstream of the first casing 2. The second casing 10 sequentially contains an air supply heater 11 for heating in winter and an air supply cooler 12 for cooling in summer. A rectifying plate 13 for maintaining a uniform air flow is provided in front of the supply air heater 11 and the cooler 12.
Is provided.
給気加熱器11は第２ケーシング10の下流側の風道14を
通過する空気温度を温度調節計15aで計測し、計測した
温度に応じて給気加熱器11への蒸気量を加減し、温度調
節された空気を供給するものである。また、吸気冷却器
12は第２ケーシング10の下流側から風道14を通過する空
気温度を温度調節計15bで計測し、計測した温度に応じ
て給気冷却器12への冷水量を調節し、温度調節された空
気を供給するものである。The air supply heater 11 measures the temperature of the air passing through the wind path 14 on the downstream side of the second casing 10 with a temperature controller 15a, and adjusts the amount of steam to the air supply heater 11 according to the measured temperature. It supplies air whose temperature has been adjusted. Also, the intake air cooler
12 measures the temperature of the air passing through the wind path 14 from the downstream side of the second casing 10 with the temperature controller 15b, adjusts the amount of cold water to the air supply cooler 12 according to the measured temperature, and adjusts the temperature. It supplies air.
ここで、第２ケーシング10内に設置する整流板13につ
いて説明する。Here, the current plate 13 installed in the second casing 10 will be described.
整流板13は前述したとうり第２ケーシング10内の給気
加熱器11および冷却器12を通過する気流、風速を設計値
（3m/s）以下に均一に整流するためのものである。The rectifying plate 13 is for uniformly rectifying the airflow and the wind speed passing through the air supply heater 11 and the cooler 12 in the second casing 10 as described above to a design value (3 m / s) or less.
この整流板13には第２図および第３図に示した多孔式
波形板を使用する。この板は小さい径の通気孔16が多数
に抜ち抜かれており、この通気孔16によって開口率が設
定される。As the current plate 13, the perforated corrugated plate shown in FIGS. 2 and 3 is used. This plate has a large number of small-diameter ventilation holes 16 cut out, and the ventilation holes 16 set the aperture ratio.
また、送風機７の出口側に設ける必要から多大な風圧
を受けるため、整流板13は波形に折り曲げて形成され、
面強度をもたせるようにしている。In addition, since it needs to be provided on the outlet side of the blower 7 to receive a large wind pressure, the rectifying plate 13 is formed by being bent into a waveform,
It is designed to have surface strength.
なお、符号17は第２ケーシング10内への取付孔であ
る。整流板13を設けることによって整流効果が大きくな
り、圧力損失が低くなる。Reference numeral 17 denotes a mounting hole in the second casing 10. By providing the rectifying plate 13, the rectifying effect is increased and the pressure loss is reduced.
なお、本発明者の実験によれば加熱器および冷却器の
設計通過面風速（3m/s以下）に整流するために開口率30
％程度の整流板が効果的であることが確認された。According to the experiment of the inventor, the aperture ratio was set to 30 in order to rectify the wind speed (3 m / s or less) at the design passage surface of the heater and the cooler.
It was confirmed that a current plate of about% was effective.
［発明の効果］ 本発明によれば加熱器および冷却器を通過する風速を
設計範囲内で均一に整流することができる。[Effects of the Invention] According to the present invention, the wind speed passing through the heater and the cooler can be uniformly rectified within a design range.
したがって、たとえば原子力発電所に設置された換気
設備において加熱器および冷却器による熱交換を適宜温
度範囲に調整し各室の温度を所定の温度に保つことによ
って発電設備の安定した運転環境を維持することができ
る。Therefore, for example, in a ventilation facility installed in a nuclear power plant, heat exchange by a heater and a cooler is adjusted to an appropriate temperature range, and the temperature of each room is maintained at a predetermined temperature, thereby maintaining a stable operating environment of the power generation facility. be able to.
また、請求項２記載の換気設備用給気装置においては
整流板と波形に折り曲げて形成したので、面強度が向上
し、多大な風圧を受けた場合においても形状が維持で
き、より装置の信頼性を向上させることができる。Further, in the air supply device for ventilating equipment according to the second aspect, since the air supply device is bent and formed into a rectifying plate and a corrugated shape, the surface strength is improved, and the shape can be maintained even when a large wind pressure is applied. Performance can be improved.
第１図は本発明に係る換気設備用給気装置の一実施例を
示す構成図、第２図は第１図における整流板を示す横断
面図、第３図は同じく整流板の平面図、第４図は従来の
換気設備用給気装置を示す概略構成図である。 １……外気取入口 ２……第１ケーシング ３……エアフイルタ ４……連結風道管 ５……風量調整装置 ６・８……伸縮継手 ７……送風機 ９……逆流防止ダンパ 10……第２ケーシング 11……給気加熱器 12……給気冷却器 13……整流板 14……風道管 15a・15b……温度調節計 16……通気孔 17……取付孔FIG. 1 is a configuration diagram showing one embodiment of an air supply device for ventilation equipment according to the present invention, FIG. 2 is a cross-sectional view showing a rectifying plate in FIG. 1, FIG. FIG. 4 is a schematic configuration diagram showing a conventional air supply device for ventilation equipment. DESCRIPTION OF SYMBOLS 1 ... Outside air intake 2 ... 1st casing 3 ... Air filter 4 ... Connecting airway pipe 5 ... Air flow adjusting device 6.8 ... Expansion joint 7 ... Blower 9 ... Backflow prevention damper 10 ... 2 Casing 11 Air supply heater 12 Air supply cooler 13 Rectifier plate 14 Air duct 15a / 15b Temperature controller 16 Ventilation hole 17 Mounting hole
Claims (2)
入口を有する第１ケーシングと、この第１ケーシングの
下流側に接続された給気加熱器および給気冷却器が順次
収容された第２ケーシングとからなる換気設備用給気装
置において、前記第２ケーシング内に収容された給気加
熱器および給気冷却器の前方に開口率約30％の開口を有
する多孔整流板を設けてなることを特徴とする換気設備
用給気装置。A first casing having an outside air intake in which an air filter is accommodated on an upstream side, and a first air supply heater and an air supply cooler which are sequentially accommodated downstream of the first casing. In an air supply device for ventilation equipment comprising two casings, a perforated straightening plate having an opening having an opening ratio of about 30% is provided in front of an air supply heater and an air supply cooler housed in the second casing. An air supply device for ventilation equipment, characterized in that:
式波形板からなることを特徴とする請求項１記載の換気
設備用給気装置。2. The air supply device for ventilation equipment according to claim 1, wherein said perforated flow regulating plate is formed of a perforated corrugated plate bent in a wave shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1914290A JP2573385B2 (en) | 1990-01-31 | 1990-01-31 | Air supply for ventilation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1914290A JP2573385B2 (en) | 1990-01-31 | 1990-01-31 | Air supply for ventilation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03225128A JPH03225128A (en) | 1991-10-04 |
| JP2573385B2 true JP2573385B2 (en) | 1997-01-22 |
Family
ID=11991204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1914290A Expired - Lifetime JP2573385B2 (en) | 1990-01-31 | 1990-01-31 | Air supply for ventilation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2573385B2 (en) |
-
1990
- 1990-01-31 JP JP1914290A patent/JP2573385B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03225128A (en) | 1991-10-04 |
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