JPS5947905A - Switchboard device - Google Patents

Switchboard device

Info

Publication number
JPS5947905A
JPS5947905A JP57159307A JP15930782A JPS5947905A JP S5947905 A JPS5947905 A JP S5947905A JP 57159307 A JP57159307 A JP 57159307A JP 15930782 A JP15930782 A JP 15930782A JP S5947905 A JPS5947905 A JP S5947905A
Authority
JP
Japan
Prior art keywords
switchboard
spring
hanging
hanging member
wire rope
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
JP57159307A
Other languages
Japanese (ja)
Inventor
阿部　良市
三村　友一
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP57159307A priority Critical patent/JPS5947905A/en
Publication of JPS5947905A publication Critical patent/JPS5947905A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は原子力発電所等のプラントにおける配電盤装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a switchboard device in a plant such as a nuclear power plant.

〔発明の技術的背景〕[Technical background of the invention]

第１図を参照して従来例を説明する。図中１は原子力発
電所の建屋の床を示す。この床１には配電盤２がアンカ
ーボルト３を介して据付はカーボルト３に配電盤２のア
ンカーボルト用穴（図示せず）を貫通させて据付け、ナ
ツト４を締め付けることによシ配電盤２を床１に固定す
上記構成によると、例えば地震が発生した場合、配電盤
２の固有周波数（一般に７　Ｈｚ程度）が地震周波数に
近くそれによって上記配電盤２が共振する恐れがある。A conventional example will be explained with reference to FIG. 1 in the figure shows the floor of the nuclear power plant building. The power distribution board 2 is installed on this floor 1 via anchor bolts 3.The power distribution board 2 is installed on the floor 1 by passing the anchor bolt holes (not shown) of the power distribution board 2 through the anchor bolts 3, and tightening the nuts 4. According to the above-mentioned configuration in which the frequency is fixed to 1, for example, when an earthquake occurs, the natural frequency (generally about 7 Hz) of the switchboard 2 is close to the earthquake frequency, and there is a risk that the switchboard 2 will resonate.

配電盤２が共振すると地震加速度が倍加されることにな
シ配電盤２内の機器に大きな加速度がかかることになる
。すなわち地震加速度の応答倍率が１をはるかに越える
ために機器の誤動作あるいは損傷の可能性がある。そこ
で従来から配電盤２の共振を防止する為に配電盤２の骨
組みを太くしたりあるいは補強部材を付加したシして配
電盤２の固有周波数を例えば２０　Ｈｚ以上の剛な構造
にする方法がとられている。しかしながら上記方法によ
ると配電盤２が大形化してしまいまたコストも高くなっ
てしまい、さらに配電盤２内の機器固有の限界加速度以
上の地震が発生すると機器が誤動作あるいは損傷してし
まう恐れがあった。When the power distribution board 2 resonates, the seismic acceleration will be doubled, and the equipment in the power distribution board 2 will be subjected to a large acceleration. In other words, since the response magnification of seismic acceleration far exceeds 1, there is a possibility of equipment malfunction or damage. Therefore, in order to prevent the resonance of the switchboard 2, conventional methods have been used to make the switchboard 2 a rigid structure with a natural frequency of, for example, 20 Hz or more, by making the frame of the switchboard 2 thicker or adding reinforcing members. There is. However, according to the above method, the switchboard 2 becomes larger and the cost increases, and furthermore, if an earthquake occurs that exceeds the limit acceleration specific to the equipment in the switchboard 2, there is a risk that the equipment may malfunction or be damaged.

〔発明の目的〕[Purpose of the invention]

本発明の目的とするところは、配電盤を建屋の天井から
吊り下げることにより配電盤を大形化することなく、か
つコストを高めることなく耐震性強化を図ることが可能
な配電盤装置を提供することにある。An object of the present invention is to provide a switchboard device that can enhance earthquake resistance without increasing the size of the switchboard or increasing cost by suspending the switchboard from the ceiling of a building. be.

〔発明の概要〕[Summary of the invention]

本発明による配電盤装置は、配電盤と、この配電盤に取
シ付けられた吊りボルトに接続されたワイヤロープおよ
びこのワイヤロープに接続されたバネとからなシ上記配
電盤を建屋の天井から吊り下げる吊り下げ部材とを具備
した構成である。A switchboard device according to the present invention includes a switchboard, a wire rope connected to a hanging bolt attached to the switchboard, and a spring connected to the wire rope. This is a configuration including a member.

すなわち配電盤をワイヤロープおよばバネとり下げるこ
とによシ耐展性の強化を図ろうとする構成である。した
がって配電盤を大形化することなく、かつコストを高め
ることなくその耐震性を強化することができそれによっ
て配電盤内の機器の健全性を維持することができ配電盤
はもとよシブラント全体の安全性および信頼性を向上さ
せることができる。In other words, this is a configuration in which the wire rope and springs are lowered from the switchboard in order to improve its durability. Therefore, the earthquake resistance of the switchboard can be strengthened without increasing the size or cost, and the integrity of the equipment inside the switchboard can be maintained, thereby increasing the safety of not only the switchboard but also the whole system. and reliability can be improved.

〔発明の実施例〕[Embodiments of the invention]

第２図を参照して本発明の一実施例を説明する。図中１
０１は配電盤を示す。この配電盤１０１には、運搬用の
吊りボルト１０２が設けられている。そして上記配電盤
１０１はこの吊りボルト１０２を介して吊り下げ部材１
０３に接続されておシ建屋の天井１０４から吊り下げら
れている。上記吊り下げ部材１０．３はワイヤロープ１
０５およびバネ１０６より構成されている。そしてこの
ワイヤロープ１０５およびバネ１０６とからなる吊り下
げ部材口」の全長は５０鋤である。また上記バネ１０６
のバネ定数Ｒは前記配電盤１０１０重量ｍの２１倍であ
る。An embodiment of the present invention will be described with reference to FIG. 1 in the diagram
01 indicates a switchboard. This switchboard 101 is provided with hanging bolts 102 for transportation. The above-mentioned switchboard 101 is connected to the hanging member 1 via this hanging bolt 102.
03 and is suspended from the ceiling 104 of the building. The hanging member 10.3 is the wire rope 1
05 and a spring 106. The total length of the hanging member opening consisting of the wire rope 105 and the spring 106 is 50 plows. In addition, the spring 106
The spring constant R is 21 times the weight m of the switchboard 1010.

次に以上の構成の配電盤装置において１一層性が強化さ
れたことについて説明する。まず配電盤１０１の水平方
向に関する固有周波数ｆＶは単振子の周波数にほぼ等し
いと考えられるのでただし　ｆ：重力加速度 ｌ：吊り下げ部材１０３の全長 で表わすことができる。上記式（４）においてｌを長く
することにより固有周波数ｆｖを小さくすることかでき
地震周波数ｆ、（一般には１〜５Ｈｚ　）より小さくす
ることが可能となる。Next, a description will be given of how the power distribution board device having the above structure has been enhanced in one layer. First, since the natural frequency fV in the horizontal direction of the switchboard 101 is considered to be approximately equal to the frequency of a simple pendulum, it can be expressed as: f: gravitational acceleration l: total length of the hanging member 103. In the above equation (4), by increasing l, the natural frequency fv can be made smaller, making it possible to make it smaller than the seismic frequency f (generally 1 to 5 Hz).

次に地震に対する加速度応答倍率をαとすると λ＝二　　　　　・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・　　（Ｃ）ｖ ただし　ｈ：減衰定数 で表わすことができる。この式（Ｂ）において加速度応
答倍率（ロ）を１以下にする為には、（１−λ″）！≧
１　　・・・・・・・・・・・・・・・・・・・・・　
　（Ｄ）であればよい。この式（Ｄ）よシ １−λ８≦−１ λ２≧２ λ≧Ｊ７　　　　・・・・・・・・・・・・・・・・・
・・・・・・・　　■となる。したがって前期式（Ｃ）
と上記式（Ｅ）よシｆ。Next, if the acceleration response magnification to an earthquake is α, then λ=2.
・・・・・・・・・・・・・・・ (C)v However, h: Can be expressed as an attenuation constant. In this formula (B), in order to make the acceleration response magnification (b) 1 or less, (1-λ″)!≧
1 ・・・・・・・・・・・・・・・・・・・・・
(D) is sufficient. According to this formula (D), 1-λ8≦-1 λ2≧2 λ≧J7 ・・・・・・・・・・・・・・・・・・
...... ■. Therefore, the first half type (C)
and the above formula (E).

λ＝π≧Ｊ となる。そしてこの式（Ｆ）において地震周波数ｆＯを
最小値のＩＨｚとすると となる。そこで前述したように吊り下げ部材１０３の全
長ｌは５０ｅであり、これを前記式（Ａ）に代入すると となシ上記式（Ｆ’）を満足する。したがって吊り下げ
部材１０３の全長を５００Ｉｌｌとすることによシ地震
に対する加速度応答倍率（φを１以下に抑えることがで
きるのである。λ=π≧J. In this equation (F), if the earthquake frequency fO is set to the minimum value IHz, then the following equation is obtained. Therefore, as mentioned above, the total length l of the hanging member 103 is 50e, and when this is substituted into the above equation (A), the above equation (F') is satisfied. Therefore, by setting the total length of the hanging member 103 to 500 Ill, the acceleration response magnification (φ) against an earthquake can be suppressed to 1 or less.

次に配電盤１０１の垂直方向に関する固有周波数ｆＨは ただし　Ｒ：バネ１０６のバネ定数 ｍ：配電盤１０１０重量 で表わされる。前述した水平方向の場合同様地震に対す
る加速度応答倍率（ロ）を１以下に抑える為には でなければいけない。す々わち上記式（→よりとなり である。本実施例におけるバネ１０６のバネ定数Ｒは前
述したように配電盤１０１の重量ｍの２π８倍であり上
記式〇）を満足する。したがって加速度応答倍率αを１
以下に抑えることができる。Next, the natural frequency fH of the switchboard 101 in the vertical direction is expressed as follows: R: Spring constant m of the spring 106: Weight of the switchboard 1010. As in the case of the horizontal direction described above, this must be done in order to suppress the acceleration response magnification (b) to an earthquake to 1 or less. That is, from the above formula (→).The spring constant R of the spring 106 in this embodiment is 2π8 times the weight m of the switchboard 101, as described above, and satisfies the above formula (0). Therefore, the acceleration response magnification α is 1
It can be kept below.

すなわち吊り下げ部材し口を介して配電盤１０１を建屋
天井１０４から吊り下げる。そして上記吊シ下げ部組口
」の全長ｌを５０品とし、かつ吊り下げ部材し口のバネ
１０６のバネ定数Ｒを配電盤１０１の重量７ｎの２π２
倍とした構成である。That is, the power distribution board 101 is suspended from the building ceiling 104 through the hanging member opening. The total length l of the above-mentioned hanging member opening is 50 parts, and the spring constant R of the spring 106 of the hanging member opening is 2π2 of the weight 7n of the switchboard 101.
This is a double configuration.

したがって地震に対する加速度応答倍率αを１以下に抑
えることができ、それによって配電盤１０１内機器固有
の限界加速度以上の加速度が配電ｌｌ１１０１にはかか
らないので配電盤１０１内機器が誤動作あるいは損傷す
ることはなく、配電盤の耐振性を大幅に強化することが
でき、配電盤はもとよりプラント全体としての安全性お
よび信頼性を大巾に向上させることができる。Therefore, the acceleration response magnification α for earthquakes can be suppressed to 1 or less, and as a result, acceleration exceeding the limit acceleration unique to the equipment in the switchboard 101 will not be applied to the power distribution board 1101, so the equipment in the switchboard 101 will not malfunction or be damaged, and the switchboard The vibration resistance of the switchboard can be greatly strengthened, and the safety and reliability of not only the switchboard but also the entire plant can be greatly improved.

なお前記実施例では吊り下げ部材二３の全・長を設置ス
ペース等据付条件を考慮して５０出としたがこれに限っ
たことではな（，５９ｅ以上であればよい。またバネ１
０６のバネ定数に関しても配電盤１０１の重量ｍの２π
２倍以下であれば前記実施例同様の効果を得ることがで
きる。In the above embodiment, the total length of the hanging member 23 was set at 50 mm in consideration of the installation conditions such as the installation space, but it is not limited to this.
Regarding the spring constant of 06, 2π of the weight m of the switchboard 101
If it is twice or less, the same effect as the above example can be obtained.

〔発明の効果〕〔Effect of the invention〕

本発明による配電盤装置は、配電盤と、この配電盤に取
り付けられた吊りボルトに接続されたワイヤロープおよ
びこのワイヤロープに接続されたバネとからなり上記配
電盤を建屋の天井から吊り下げる吊り下げ部材とを具備
した構成である。A switchboard device according to the present invention includes a switchboard, a wire rope connected to a hanging bolt attached to the switchboard, and a spring connected to the wire rope, and a hanging member for hanging the switchboard from the ceiling of a building. This is a fully equipped configuration.

すなわち配電盤をワイヤロープおよびバネとからなる墨
り下げ部材により建屋の天井から吊り下げることによシ
耐展性の強化を図ろうとする構成である。That is, the switchboard is suspended from the ceiling of the building by a hanging member consisting of a wire rope and a spring, thereby increasing its durability.

したがって配電盤を大形化す為ことなく、かつコストを
高めることなくその耐震性を強化することができそれに
よって配電盤内の機器の健全性を維持することができ、
配電盤はもとよりプラント全体の安全性および信頼性を
向上させることができる等その効果は犬である。Therefore, the earthquake resistance of the switchboard can be strengthened without increasing the size or cost, and the integrity of the equipment inside the switchboard can be maintained.
Its effects are significant, such as improving the safety and reliability of not only the switchboard but also the entire plant.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来例を示す配電盤の据付図、第２図は本発明
の一実施例を示す配電盤の据付図である。 １０１・・・配電盤、１０３＝−・吊り下げ部材、１０
４・・・建屋の天井。FIG. 1 is an installation diagram of a power distribution board showing a conventional example, and FIG. 2 is an installation diagram of a power distribution board showing an embodiment of the present invention. 101...Switching board, 103=--Suspending member, 10
4...Ceiling of the building.

Claims (1)

【特許請求の範囲】[Claims] （１）配電盤と、この配電盤に取り付けられた吊りボル
トに接続されたワイヤロープおよびこのワイヤロープに
接続されたバネとからなシ上記配電盤を建屋の天井から
吊し下げる帛り下げ部材とを具備したことを特徴とする
配電盤　　゛装置。 ＋２１上記吊シ下げ部材は５０清以上の長さを有しかつ
吊り下げ部材のバネのバネ定数が前記配電盤重量の２π
２倍以下であることを特徴とする特許請求の範囲第１項
記載の配電盤装置。(1) A hanging member consisting of a switchboard, a wire rope connected to a hanging bolt attached to the switchboard, and a spring connected to the wire rope, for hanging the switchboard from the ceiling of the building. A switchboard device characterized by: +21 The above-mentioned hanging member has a length of 50 mm or more, and the spring constant of the spring of the hanging member is 2π of the weight of the switchboard.
2. The switchboard device according to claim 1, wherein the power distribution is twice or less.
JP57159307A 1982-09-13 1982-09-13 Switchboard device Pending JPS5947905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57159307A JPS5947905A (en) 1982-09-13 1982-09-13 Switchboard device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57159307A JPS5947905A (en) 1982-09-13 1982-09-13 Switchboard device

Publications (1)

Publication Number Publication Date
JPS5947905A true JPS5947905A (en) 1984-03-17

Family

ID=15690938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57159307A Pending JPS5947905A (en) 1982-09-13 1982-09-13 Switchboard device

Country Status (1)

Country Link
JP (1) JPS5947905A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5655079A (en) * 1989-07-31 1997-08-05 Hitachi, Ltd. Data processing system and data transmission and processing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5655079A (en) * 1989-07-31 1997-08-05 Hitachi, Ltd. Data processing system and data transmission and processing method

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