JPS6324912B2 - - Google Patents
Info
- Publication number
- JPS6324912B2 JPS6324912B2 JP57154681A JP15468182A JPS6324912B2 JP S6324912 B2 JPS6324912 B2 JP S6324912B2 JP 57154681 A JP57154681 A JP 57154681A JP 15468182 A JP15468182 A JP 15468182A JP S6324912 B2 JPS6324912 B2 JP S6324912B2
- Authority
- JP
- Japan
- Prior art keywords
- elevator
- explosion
- fan
- floor
- proof
- 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
Links
- 238000000034 method Methods 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Ventilation (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Description
【発明の詳細な説明】 (a) 技術分野 本発明は防爆エレベータの制御方法に関する。[Detailed description of the invention] (a) Technical field The present invention relates to a control method for an explosion-proof elevator.
(b) 発明の技術的背景
爆発生ガスを取扱う建物に設置されるエレベー
タに於いて、エレベータ設置場所が、爆発性の十
分な危険雰囲気を生成する恐れのある危険場所で
あれば、その危険雰囲気の存在する時間とひん
度、および対象ガスの種類により、定められた防
爆電気設備を施さねばならないが、通常および異
常時おいても危険雰囲気の生成する可能性のない
とみなされる非危険場所に設置される場合に於い
てはそこが必ずしも絶対に安全な場所ではなく、
危険となる確率が極めて低い、という見地から、
危険場所に準じた防爆対策を施すことが多い。例
えば比較的危険場所に近い乗場機器や昇降路内機
器には、耐圧防爆機器等を適用するが、エレベー
タ機械室内の電動機、制御装置等は、その寸法お
よび構造上の面から完全な防爆対策は多大な費用
と取扱いの困難さを招くため、機械室壁に圧力フ
アンを設けて常時運転し、機械室の内圧を高める
があるいは強制換気する通風式内圧防爆構造に準
じた方式を採用する場合が多い。(b) Technical background of the invention In an elevator installed in a building that handles explosive raw gas, if the elevator is installed in a dangerous place where there is a risk of generating a sufficiently explosive hazardous atmosphere, the dangerous atmosphere Explosion-proof electrical equipment must be provided depending on the time and frequency of occurrence of the gas, and the type of target gas. When installed, it is not necessarily an absolutely safe place,
From the standpoint that the probability of becoming dangerous is extremely low,
Explosion-proof measures are often taken in accordance with hazardous areas. For example, pressure-resistant and explosion-proof equipment is applied to hall equipment and hoistway equipment that are relatively close to dangerous areas, but electric motors, control devices, etc. in elevator machine rooms cannot be completely explosion-proof due to their size and structure. To avoid this, it is sometimes necessary to install a pressure fan on the wall of the machine room and run it constantly to increase the internal pressure of the machine room, or to use forced ventilation, which is similar to the ventilation type internal pressure explosion-proof structure. many.
第１図に機械室の内圧を高める防爆式エレベー
タの構成図を示した。１はかご、２はロープ、３
は巻上機、４は電源盤、５は制御盤、６は昇降
路、７は乗場、８は機械室、９はロープ穴、１０
は圧力フアンである。 Figure 1 shows the configuration of an explosion-proof elevator that increases the internal pressure of the machine room. 1 is a basket, 2 is a rope, 3
is the hoisting machine, 4 is the power panel, 5 is the control panel, 6 is the hoistway, 7 is the landing, 8 is the machine room, 9 is the rope hole, 10
is a pressure fan.
万一爆発性ガスが漏れる等の事故があり、エレ
ベータ設置場所が危険雰囲気状態となつた場合、
ガスが機械室へ流入するのを防ぐため常時圧力フ
アン１０で機械室内圧を高めておく。 In the unlikely event that there is an accident such as explosive gas leakage, and the elevator installation location becomes a dangerous atmosphere,
In order to prevent gas from flowing into the machine room, the pressure inside the machine room is constantly increased using a pressure fan 10.
この方式では、前記圧力フアンに絶対の信頼性
が要求されるが、非危険場所設置のエレベータと
いうことから、圧力フアンの停止トラブルに関し
特別配慮されてなく、万一の場合は人身事故に繋
がる状態であつた。 In this system, the pressure fan is required to have absolute reliability, but since the elevator is installed in a non-hazardous area, no special consideration is given to the problem of the pressure fan stopping, and in the unlikely event that it occurs, it could lead to a personal accident. It was hot.
(c) 発明の目的および概要
本発明は上記した点に鑑みなされたもので、機
械室の内圧を高め、あるいは機械室の強制換気を
することにより、機械室内に危険雰囲気が充満す
るのを防止する方式の防爆エレベータにおいて、
圧力フアンの運転停止を検出することにより、エ
レベータを所定の階へ緊急着床させて停止した
後、エレベータ用電源を自動的にしや断させるこ
とにより、制御装置で発生する電気火花に基因す
る爆発事故を防ぐ防爆エレベータの制御方法を提
供する。(c) Purpose and Summary of the Invention The present invention has been made in view of the above-mentioned points, and aims to prevent a dangerous atmosphere from filling the machine room by increasing the internal pressure of the machine room or by performing forced ventilation of the machine room. In explosion-proof elevators that
By detecting the stoppage of the pressure fan, the elevator is brought to a predetermined floor and stopped, and then the power supply for the elevator is automatically cut off to prevent explosions caused by electrical sparks generated by the control device. A control method for an explosion-proof elevator that prevents accidents is provided.
(d) 発明の実施例
以下本発明の防爆エレベータの制御方法の一実
施例を図面を参照して説明する。(d) Embodiments of the Invention An embodiment of the method for controlling an explosion-proof elevator according to the present invention will be described below with reference to the drawings.
第２図は本発明に係わる電気回路図で、１１は
エレベータ電動機、１２はその制御装置を表し、
その動力電源はＲ，Ｓ，Ｔより電源開閉器１３を
介して受電する。又、１４は前記の機械室の内圧
を高める圧力フアンである。１５はフアン停止検
出器で、電圧検出又は風圧検出等により動作せる
ものである。電源開閉器１３は主接触部Ｓ１、引
外しコイルTC１、補助接点TS１よりなり、１６
は本発明で新らたに加えて制御回路で、XD，
XT，ZT，RR，YT，TRP等は制御を成すリレ
ー及びタイマーである。この制御回路は通常、エ
レベータ制御盤内へ組込まれるものである。以下
第２図および第３図に示した動作説明図を参照し
ながら、動作を順を追つて説明する。 FIG. 2 is an electric circuit diagram according to the present invention, in which 11 represents an elevator motor, 12 represents its control device,
The power source is received from R, S, and T via a power switch 13. Further, 14 is a pressure fan for increasing the internal pressure of the machine room. Reference numeral 15 denotes a fan stop detector, which is operated by detecting voltage or wind pressure. The power switch 13 consists of a main contact part S1, a tripping coil TC1, and an auxiliary contact TS1.
is a control circuit in addition to the new invention, XD,
XT, ZT, RR, YT, TRP, etc. are relays and timers that perform control. This control circuit is typically integrated into the elevator control panel. The operation will be explained step by step with reference to the operation explanatory diagrams shown in FIGS. 2 and 3.
フアン１４が正常運転していれば、エレベータ
は平常運転を行なう。 If the fan 14 is operating normally, the elevator will operate normally.
いま、フアン１４が何等かの故障もしくは、人
為的な電源切等で運転停止したとする。 Now, suppose that the fan 14 has stopped operating due to some kind of failure or an artificial power cut.
フアン停止検出器１５がこれを検出し、その信
号接点１５が開くと、制御装置１２より供給され
た制御電源Ｐ，Ｎ間に設けた、検出リレーXDが
OFFする。この状態がT1秒継続したらフアン運
転停止とみなし、検出タイマーXTがONし、
XTa1接点で自己保持する。これ以後エレベータ
は緊急着床動作に入る。XTb1が開くため、既に
実施されている呼登録回路Ｃ１は開放され、すべ
ての呼びが消去されると同時に新たに呼びはつく
れなくなる。またXTa3が閉じ、既に実施されて
いる着床指令回路Ｄ１へ信号が与えられ、エレベ
ータは減速し最寄階へ着床させるよう構成されて
いる。 When the fan stop detector 15 detects this and the signal contact 15 opens, the detection relay XD installed between the control power supplies P and N supplied from the control device 12 starts.
Turn off. If this state continues for T 1 second, it is assumed that the fan operation has stopped, and the detection timer XT turns on.
Self-holding with one XTa contact. After this, the elevator enters emergency landing operation. Since XTb 1 is opened, the already implemented call registration circuit C1 is opened, all calls are deleted and at the same time no new calls can be created. Furthermore, XTa 3 is closed, a signal is given to the landing command circuit D1 which is already in operation, and the elevator is configured to decelerate and land at the nearest floor.
エレベータがドアゾーンに入るとドアゾーン検
出リレー（図示せず）のＤ，Za1が閉じ、さら
に、着床停止リレー（図示せず）のUDb1が閉じ
ると、避難着床検出リレーRRがONし、RRa1で
自己保持して着床完了を検出する。もしフアン停
止検出器１５が動作した時、エレベータが着床停
止していればXTの限時々間T1秒経過すると呼び
回路が切離されると共に、RRがONし着床完了
を検出する。また、エレベータが休止している
と、前記DZリレーはOFFしているため、RRが
ONできなくなる。そのため、既に実施している
休止時には必ずOFFするCCリレー（図示せず）
の接点CCb1を設けた。これによつて休止時もRR
がONして着床したものとして扱う。 When the elevator enters the door zone, D and Za 1 of the door zone detection relay (not shown) close, and when UDb 1 of the landing stop relay (not shown) closes, the evacuation landing detection relay RR turns ON, RRa 1 self-holds and detects completion of implantation. If the elevator has stopped landing on the floor when the fan stop detector 15 is activated, the call circuit is disconnected after the XT time limit of 1 second has elapsed, and RR is turned ON to detect completion of landing on the floor. Also, when the elevator is stopped, the DZ relay is OFF, so the RR is
Cannot be turned on. Therefore, a CC relay (not shown) that is always turned OFF during a pause that has already been implemented
A contact point CCb 1 was provided. This allows RR even when paused.
is assumed to have been ON and implantation has occurred.
次に、RRa2が閉じてT3秒経過すると、しや断
準備完了タイマーYTがONする。時間T3は、か
ご内の乗客又は作業員が脱出するに要する時間と
すればよい。 Next, when RRa 2 is closed and T 3 seconds have elapsed, the shearing preparation completion timer YT turns ON. The time T3 may be the time required for the passengers or workers inside the car to escape.
YTa1が閉じれば、電源しや断指令リレーTRP
がONするため、エレベータ用電源開閉器１３に
設けてある引外しコイルTC１にＰ−TRPa1−
TC１−TS１−Ｎにより電圧が印加され、主接触
部Ｓ１を自動しや断する。なお補助接点TS１は
主接触部Ｓ１の連動接点で、Ｓ１がしや断される
と開き以後の引外し回路を開放する。 If YTa 1 closes, the power shutoff command relay TRP
turns on, P-TRPa 1 - is applied to the tripping coil TC1 provided in the elevator power switch 13.
A voltage is applied by TC1-TS1-N and the main contact portion S1 is automatically cut off. The auxiliary contact TS1 is an interlocking contact of the main contact portion S1, and when S1 is finally disconnected, it opens the subsequent tripping circuit.
これによりエレベータの電源は完全に切離され
る。もちろん、前述のリレー、タイマー等もすべ
てOFFする。こうすることによりエレベータ電
気回路から発生する電気火花等は以後発生しな
い。 This completely disconnects the elevator from power. Of course, all the relays, timers, etc. mentioned above are also turned off. By doing this, electrical sparks and the like generated from the elevator electrical circuit will no longer occur.
ところで、前記動作において制御装置のトラブ
ルで、着床不能に陥つたり、又は着床したのに
RRリレーが動作不良であつたりするとYT，
TRPリレー等が動作せず、従つて電源がしや断
されぬまま、停止状態となつてしまい、時間と共
に危険性が高まつてくる。 By the way, in the above operation, due to a problem with the control device, it may be impossible to land on the floor, or even after landing on the floor,
YT when the RR relay malfunctions and hits.
TRP relays, etc. do not operate, and the power is then stopped without being turned off, which increases the danger as time goes on.
この様な場合の保護として最終保護タイマー
ZTを設けた。これは、フアン停止検出後、時間
T2経過すると、前記の制御動作とは全く無関係
にONしてその接点ZTa1を閉じる。これによつ
て前記リレーTRPがONして自動しや断を実行す
る。 A final protection timer is used as protection in such cases.
ZT was established. This is the time after detecting fan stoppage.
When T 2 has elapsed, it turns ON and closes the contact ZTa 1 , completely unrelated to the control operation described above. As a result, the relay TRP is turned on and automatic termination is executed.
ZTの限時々間T2は、次の関係により設定され
る。 The limited time T 2 of ZT is set by the following relationship.
T2＞（着床階までの最大走行時間＋避難脱出時
間）
上記保護タイマーを設けることにより、安全装
置が２重系になり、より信頼度を向上させてい
る。 T 2 > (Maximum travel time to landing floor + Evacuation escape time) By providing the above protection timer, the safety device becomes a dual system, further improving reliability.
第３図に示した動作説明図で、エレベータが正
常動作すれば、実線の如く動作し時刻T4で、自
動しや断が完了するが、万一、異常状態であれ
ば、ZTが点線の如く、保護動作し、時刻T5で自
動しや断を完了する。 In the operation explanatory diagram shown in Figure 3, if the elevator operates normally, it will operate as shown by the solid line and automatic shutoff will be completed at time T 4. However, if it is in an abnormal state, ZT will be indicated by the dotted line. As described above, the protection is activated and the automatic shutdown is completed at time T5 .
なお一例として、T1＝５秒、T2＝３分、T3＝
30秒程度に設定すれば良い。 As an example, T 1 = 5 seconds, T 2 = 3 minutes, T 3 =
Just set it to about 30 seconds.
このようにして緊急着床せるエレベータは、休
止状態を保つ。なお、当該建物にはガス漏れ警報
装置等が設けられ、ガス漏れ事故が発見されるの
が一般的である。ガス濃度等のチエツクが終り、
安全であることが確認された後、電源しや断器S1
を手動投入すると、完全に復旧するものである。
これらは安全管理者により実行される。 The elevator that makes emergency landing in this way remains in a dormant state. Note that the building is usually equipped with a gas leak alarm device, etc., and gas leak accidents are usually discovered. After checking the gas concentration etc.
After it is confirmed that it is safe, turn off the power and disconnect S 1
If you input it manually, it will be completely restored.
These are carried out by safety managers.
以上説明した実施例では最寄階へ着床させる方
式であるが特定の階、例えば避難階に着床させる
ことも、前記着床指令回路Ｄ１の着床指定階を避
難階に選ぶことによりできる。 In the embodiment described above, the method is to land on the nearest floor, but it is also possible to land on a specific floor, for example, an evacuation floor, by selecting the designated landing floor of the landing command circuit D1 as the evacuation floor. .
また、動力電源をしや断する例を示したが、エ
レベータ照明回路や通話回路などの補助回路も同
様にして自動しや断することができる。第４図に
照明回路を自動しや断する例を示した。 Further, although an example has been shown in which the power source is suddenly cut off, auxiliary circuits such as the elevator lighting circuit and the communication circuit can also be automatically cut off in the same way. FIG. 4 shows an example of automatically shutting off the lighting circuit.
フアン運転停止が検出されるとエレベータは避
難着床動作を行なうが、かご内あるいはホールの
乗客、作業員には事情がわからず混乱を招くこと
もありうる。そこで第５図のように警報ベルBL
などを鳴動させたり、表示灯LPを点灯させるな
ど対処することもできる。 When the stoppage of fan operation is detected, the elevator performs an evacuation landing operation, but passengers and workers in the car or in the hall may not understand the situation, which may cause confusion. Therefore, as shown in Figure 5, the alarm bell BL is
You can also take measures such as making the alarm sound or turning on the indicator light LP.
上記実施例では、エレベータ機械室内のしや断
器を自動しや断する例を示したが、さらに、電源
側へさかのぼり、電気室のしや断器を自動しや断
する方法もできる。この場合には、機械室の受電
端においても無電圧状態となりより安全性を向上
させることができる。 In the above-mentioned embodiment, an example was shown in which the breaker in the elevator machine room is automatically shut off, but it is also possible to go back to the power supply side and automatically shut off the breaker in the electrical room. In this case, the power receiving end of the machine room is also in a no-voltage state, making it possible to further improve safety.
(g) 総合的な効果
以上説明した通り本発明によれば、圧力フアン
又は換気フアンが停止したとき、エレベータを避
難着床させ、乗客又は作業員を避難させる猶予を
与えた後、エレベータ用電源を完全に自動しや断
するので、万一、危険な雰囲気が充満してきて
も、エレベータ電気機器より電気火花を発生させ
ることがなく、爆発事故を未然に防止できる。(g) Overall effect As explained above, according to the present invention, when the pressure fan or ventilation fan stops, the elevator is grounded for evacuation, and after giving time for evacuation of passengers or workers, the elevator power supply is turned on. Since the system shuts off completely automatically, even if a dangerous atmosphere were to occur, no electrical sparks would be generated from elevator electrical equipment, preventing explosions.
このことは、重大災害防止の面で極めて顕著な
効果をもたらすことが出来る。 This can have an extremely significant effect in preventing serious disasters.
第１図は本発明の技術的背景を説明するため
の、機械室の内圧を高める防爆方式のエレベータ
構成図、第２図は本発明に係る電気回路の一実施
例、第３図は第２図の動作説明図、第４図は本発
明に関連する照明電源を自動しや断する回路図、
第５図は本発明に関連する警報装置回路図であ
る。
１３……電源開閉器、１４……フアン、１５…
…フアン停止検出器、１６……制御回路。
Fig. 1 is a configuration diagram of an explosion-proof elevator that increases the internal pressure of the machine room to explain the technical background of the present invention, Fig. 2 is an example of an electric circuit according to the present invention, and Fig. 4 is a circuit diagram for automatically shutting off the lighting power supply related to the present invention,
FIG. 5 is a circuit diagram of an alarm device related to the present invention. 13...Power switch, 14...Fan, 15...
...Fan stop detector, 16...control circuit.
Claims (1)
しくは強制換気により危険雰囲気の充満を防止し
て使用する防爆エレベータの制御方法において、
前記フアンが停止したことを検出するフアン停止
検出器を設け、このフアン停止検出器の作動時
は、前記防爆エレベータを所定の階に着床せしめ
て停止し、所定の時間経過後前記防爆エレベータ
の電源をしや断することを特徴とする防爆エレベ
ータの制御方法。 ２ 所定の階は最寄階若しくは避難階としたこと
を特徴とする特許請求の範囲第１項記載の防爆エ
レベータの制御方法。[Scope of Claims] 1. A control method for an explosion-proof elevator that is used to prevent the filling of a dangerous atmosphere by increasing the internal pressure of the elevator machine room or by forced ventilation using a fan,
A fan stop detector is provided to detect when the fan has stopped, and when the fan stop detector is activated, the explosion-proof elevator is brought to a predetermined floor and stopped, and after a predetermined period of time has elapsed, the explosion-proof elevator is stopped. A control method for an explosion-proof elevator characterized by cutting off the power supply. 2. The explosion-proof elevator control method according to claim 1, wherein the predetermined floor is a nearest floor or an evacuation floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57154681A JPS5943780A (en) | 1982-09-07 | 1982-09-07 | Method of controlling explosion preventive elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57154681A JPS5943780A (en) | 1982-09-07 | 1982-09-07 | Method of controlling explosion preventive elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5943780A JPS5943780A (en) | 1984-03-10 |
| JPS6324912B2 true JPS6324912B2 (en) | 1988-05-23 |
Family
ID=15589584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57154681A Granted JPS5943780A (en) | 1982-09-07 | 1982-09-07 | Method of controlling explosion preventive elevator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5943780A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2604039B2 (en) * | 1989-11-10 | 1997-04-23 | 沖電気工業株式会社 | Pulse detection circuit |
| WO2005121005A1 (en) | 2004-06-11 | 2005-12-22 | Toshiba Elevator Kabushiki Kaisha | Elevator system |
| EP1852382B1 (en) * | 2005-02-25 | 2015-12-30 | Mitsubishi Denki Kabushiki Kaisha | Elevator apparatus |
| WO2009019755A1 (en) * | 2007-08-06 | 2009-02-12 | Mitsubishi Electric Corporation | Elevator device |
-
1982
- 1982-09-07 JP JP57154681A patent/JPS5943780A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5943780A (en) | 1984-03-10 |
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