JP2012167760A - Purging timer - Google Patents
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- JP2012167760A JP2012167760A JP2011029926A JP2011029926A JP2012167760A JP 2012167760 A JP2012167760 A JP 2012167760A JP 2011029926 A JP2011029926 A JP 2011029926A JP 2011029926 A JP2011029926 A JP 2011029926A JP 2012167760 A JP2012167760 A JP 2012167760A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
Abstract
Description
本発明は、プロセスガスクロマトグラフなど、多段階の内圧防爆保護装置に用いて好適なパージ用タイマに関する。 The present invention relates to a purge timer suitable for use in a multistage internal pressure explosion-proof protection device such as a process gas chromatograph.
ある種の内圧防爆構造では、容器内の爆発性雰囲気のガスがパージされるまでは、外部からのエネルギーを容器内に入れないように、外部の遮断装置で遮断しておく必要がある。
容器内のパージの完了は、所定の流量のパージ用ガスが流れ続けている時間で判断する (所定の流量のガスが所定の時間流れ続けていればパージ完了とする)。
In a certain type of internal pressure explosion-proof structure, until an explosive atmosphere gas in the container is purged, it is necessary to shut off the energy from the outside with an external shut-off device so as not to enter the container.
Completion of purging in the container is determined by the time during which the purge gas at a predetermined flow rate continues to flow (the purge is completed if gas at a predetermined flow rate continues to flow for a predetermined time).
図２は多段階の内圧防爆構造を持つ従来のパージ用タイマのブロック構成図である。
図において、第１内圧防爆容器１の電源ラインは耐圧防爆容器２内の第１リレー３により遮断され、第２内圧防爆容器４の電源ラインは第１内圧防爆容器１内の第２リレー５により遮断される。
FIG. 2 is a block diagram of a conventional purge timer having a multi-stage internal pressure explosion-proof structure.
In the figure, the power line of the first internal pressure explosion-proof container 1 is cut off by the first relay 3 in the explosion-proof explosion-proof container 2, and the power line of the second internal pressure explosion-proof container 4 is cut by the second relay 5 in the first internal pressure explosion-proof container 1. Blocked.
第２内圧防爆容器４へは、第１，第２リレー３，５の両方が導通しないと電源が供給されず、第１内圧防爆容器１へは、耐圧防爆容器２内８の第１リレー３が導通しないと電源が供給されない。
第１、第２内圧防爆容器１,４内にはそれぞれ第１、第２発熱装置（電子回路など）６,７が配置され、第１、第２内圧防爆容器１，４内にはガス導入口８,９からパージ用ガスが導入され、ガス排出口１０,１１からそれぞれ排出されている。
If both the first and second relays 3 and 5 are not connected to the second internal pressure explosion-proof container 4, no power is supplied to the first internal pressure explosion-proof container 1. If is not conductive, power is not supplied.
First and second heat generating devices (electronic circuits, etc.) 6 and 7 are disposed in the first and second internal pressure explosion-proof containers 1 and 4, respectively, and gas is introduced into the first and second internal pressure explosion-proof containers 1 and 4. Purge gas is introduced from the ports 8 and 9, and is discharged from the gas discharge ports 10 and 11, respectively.
なお、図では省略するがそれぞれの内圧防爆容器１,４内のバージガスの内圧及び流量は圧力計や流量計によりモニタリングされ、所定の値に達した段階で第１、第２タイマ１２,１３により時間が計測されている。
上述の構成において、
第１内圧防爆容器１のパージ用ガスの流量・内圧がモニタリングされ、所定の流量・圧力に達したところで、耐圧防爆容器２内の第１タイマ１２をスタートさせる。
Although not shown in the figure, the internal pressure and flow rate of the barge gas in each of the internal pressure explosion-proof containers 1 and 4 are monitored by a pressure gauge or a flow meter, and when they reach a predetermined value, the first and second timers 12 and 13 Time is measured.
In the above configuration,
The flow rate / internal pressure of the purge gas in the first internal pressure explosion-proof container 1 is monitored, and when the predetermined flow rate / pressure is reached, the first timer 12 in the explosion-proof explosion-proof container 2 is started.
第１タイマ１２がスタートしてから、所定時間が経過後、耐圧防爆容器２内の第１リレー３を導通させ、第１内圧防爆容器１へ電源を供給する。
これにより第１タイマ１２の電源が入るので、同様の手順で第１内圧防爆容器１内の第２リレー５を導通させ、第２内圧防爆容器４へ電源を供給する。
After a predetermined time has elapsed from the start of the first timer 12, the first relay 3 in the explosion-proof container 2 is turned on to supply power to the first internal pressure-proof container 1.
As a result, the power of the first timer 12 is turned on, so that the second relay 5 in the first internal pressure explosion-proof container 1 is turned on in the same procedure, and the power is supplied to the second internal pressure explosion-proof container 4.
そして、モニタリングしている流量・内圧に、所定の値を下回るなどの異常があった場合、パージ状態が破れたと判断し、その部分に電源を供給しているリレーをオフとする。
例えば、第２内圧防爆容器４に異常が発生した場合、第１内圧防爆容器１内の第１リレー３をオフとする。その結果、第２内圧防爆容器４内の第２発熱装置（電子回路）７の電源がオフとなる。
また、第１内圧防爆容器１に異常が生じた場合、耐圧防爆容器２内の第１リレー３をオフとする。その結果、第１内圧防爆容器１、第２内圧防爆容器４の両方の電源がオフとなる。
If the monitored flow rate / internal pressure has an abnormality such as being lower than a predetermined value, it is determined that the purge state has been broken, and the relay that supplies power to that portion is turned off.
For example, when an abnormality occurs in the second internal pressure explosion-proof container 4, the first relay 3 in the first internal pressure explosion-proof container 1 is turned off. As a result, the power source of the second heat generating device (electronic circuit) 7 in the second internal pressure explosion-proof container 4 is turned off.
Further, when an abnormality occurs in the first internal pressure explosion-proof container 1, the first relay 3 in the pressure-proof explosion-proof container 2 is turned off. As a result, both the first internal pressure explosion-proof container 1 and the second internal pressure explosion-proof container 4 are turned off.
ところで上述の従来例においては、第２タイマ１３は、第１内圧防爆容器１のパージが完了するまで電源が入らない。
そのため、第１、第２内圧防爆容器１，４のパージを同時に開始しても、第１内圧防爆容器１のパージが完了するまでは第２内圧防爆容器４のタイマ経過時間がカウントされず、時間のロスになる。
By the way, in the above-described conventional example, the second timer 13 is not turned on until the purge of the first internal pressure explosion-proof container 1 is completed.
Therefore, even if the purge of the first and second internal pressure explosion-proof containers 1 and 4 is started simultaneously, the timer elapsed time of the second internal pressure explosion-proof container 4 is not counted until the purge of the first internal pressure explosion-proof container 1 is completed, It will be a loss of time.
これによって、以下の問題が生じる。
１）装置の電源立ち上げ時間が長くなる。
２）時間ロス分のパージガスが無駄になる。
３）ガスクロのように温調する必要がある装置の場合、パージが破れた後の再起動時に、電源断の時間が長くなる。そのため、ガスクロの設定温度がずれてしまい、電源投入後のスタンバイ時間が長くなる。
４）第２内圧防爆容器４のパージが維持されている場合でも、第１内圧防爆容器１のパージが破れたとき、第１タイマ１２の電源が切れてタイマリセットされてしまうので、第２タイマ１３の再カウントが必要となる。
This causes the following problems.
1) The power-on time of the apparatus becomes longer.
2) The purge gas corresponding to the time loss is wasted.
3) In the case of an apparatus that needs to be temperature-controlled such as gas chromatography, the power-off time becomes longer when restarting after the purge is broken. For this reason, the set temperature of the gas chromatograph shifts, and the standby time after power-on becomes longer.
4) Even when the purge of the second internal pressure explosion-proof container 4 is maintained, when the purge of the first internal pressure explosion-proof container 1 is broken, the power of the first timer 12 is turned off and the timer is reset. 13 recounts are required.
従って本発明は、第２タイマ１３の電源を別途設けることにより、耐圧防爆容器内の第１タイマ１２と内圧防爆容器１内の第２タイマ１３の時間を同時にカウントできるようにし、装置立ち上げ・再起動時の無駄な時間をなくしたパージ用タイマを提供することを目的としている。 Therefore, according to the present invention, the power supply of the second timer 13 is separately provided so that the time of the first timer 12 in the explosion-proof container and the second timer 13 in the internal explosion-proof container 1 can be counted simultaneously. An object of the present invention is to provide a purge timer that eliminates wasted time during restart.
本発明は上記課題を解決するためになされたもので、請求項１に記載のパージ用タイマにおいては、
耐圧防爆容器内に配置され電源に接続された第１タイマと、
前記耐圧防爆容器内に配置され、前記第１タイマからの出力信号に応じて電源のオンオフを行う第１リレーと、
第１内圧防爆容器内に配置され前記第１リレーのオン時に前記電源が供給される第１発熱装置と、前記第１内圧防爆容器内に配置された第２耐圧防爆容器と、該第２耐圧防爆容器内に配置された電力供給手段、及び該電力発生手段に接続された第２タイマと、前記第１内圧防爆容器内に配置され前記第２タイマからの出力信号に応じて前記電源のオンオフを行う第２リレーと、
第２内圧防爆容器に配置され前記第２リレーのオン時に前記電源が供給される第２発熱装置と、
前記第１、第２内圧防爆容器内のパージ状態の正常、異常に応じて前記第１、第２タイマのカウントを開始または停止を行うモニタリング手段と、を具備したことを特徴とする。
The present invention has been made to solve the above problems, and in the purge timer according to claim 1,
A first timer disposed in a flameproof container and connected to a power source;
A first relay disposed in the explosion-proof container and turning on and off in response to an output signal from the first timer;
A first heat generating device disposed in the first internal pressure explosion-proof container and supplied with the power when the first relay is turned on, a second pressure-resistant explosion-proof container disposed in the first internal pressure explosion-proof container, and the second pressure resistance Power supply means arranged in the explosion-proof container, a second timer connected to the power generation means, and on / off of the power supply according to an output signal from the second timer arranged in the first internal pressure explosion-proof container A second relay for performing
A second heat generating device disposed in a second internal pressure explosion-proof container and supplied with the power when the second relay is turned on;
And monitoring means for starting or stopping the counting of the first and second timers depending on whether the purge state in the first and second internal pressure explosion-proof containers is normal or abnormal.
請求項２においては、請求項１に記載のパージ用タイマにおいて、
前記モニタリング手段は前記第１、第２内圧防爆容器内に流れるパージ用ガスの流量と圧力を含むことを特徴とする。
In claim 2, in the purge timer according to claim 1,
The monitoring means includes a flow rate and a pressure of a purge gas flowing in the first and second internal pressure explosion-proof containers.
以上説明したことから明らかなように本発明の請求項１、２によれば、第２耐圧防爆容器内に電力発生手段を配置して第２タイマを駆動できるようにしたので、第１内圧防爆容器がパージできていない状態でも第２タイマを動作させることができるようになった。
その結果、
１）第１タイマ, 第２タイマが同時にカウントできるようになり、パージ時間のロスをなくすことができた。
２）第１内圧防爆容器のみパージが破れた場合にも、第２タイマの電源断によるリセットがなくなり、再起動時のパージ時間のロスをなくすことができた。
３）時間のロスがなくなることにより、電源断時の温度低下が最小限に抑えられ、電源が入ってからのスタンバイ時間を短くすることができた。
４）時間のロスがなくなることにより、パージガスの無駄をなくすことができた。
As is apparent from the above description, according to the first and second aspects of the present invention, the second timer can be driven by disposing the power generating means in the second explosion-proof container. The second timer can be operated even when the container is not purged.
as a result,
1) The first timer and the second timer can be counted at the same time, thereby eliminating the purge time loss.
2) Even when the purge of only the first internal pressure explosion-proof container is broken, the reset due to the power-off of the second timer is eliminated, and the loss of the purge time at the time of restart can be eliminated.
3) By eliminating the time loss, the temperature drop when the power was turned off was minimized, and the standby time after the power was turned on could be shortened.
4) Waste of purge gas could be eliminated by eliminating time loss.
図１は本発明のバージ用タイマの構成図を示すものである。図において、図１の従来例とは第１内圧防爆容器内に第２耐圧防爆容器１４を配置し、この第２耐圧防爆容器１４内に第２タイマ１３を配置すると共に、例えば電池などの電力供給手段１５を配置したことと、従来、耐圧防爆容器内に配置された第１リレー３を介して第１内圧防爆容器内の第２タイマへの電源供給ラインを除去した点のみが異なっている。 FIG. 1 is a block diagram of a barge timer according to the present invention. In the figure, the conventional example of FIG. 1 has a second explosion-proof container 14 arranged in a first internal pressure explosion-proof container, a second timer 13 arranged in the second explosion-proof container 14, and, for example, power such as a battery The difference is that the supply means 15 is arranged and that the power supply line to the second timer in the first internal pressure explosion-proof container is removed through the first relay 3 arranged in the conventional explosion-proof container. .
なお、電力供給手段１５と第１タイマを耐圧防爆容器内に配置した理由は第１内圧防爆容器１がパージできていない状態でも動作する部分となるため、防爆が必要である。 The reason why the power supply means 15 and the first timer are arranged in the explosion-proof container is that the first internal pressure explosion-proof container 1 operates even when it is not purged, so explosion protection is necessary.
図１において、第１内圧防爆容器内の第２タイマ１３は、第１内圧防爆容器のパージの完了の有無に係らず電源が入っている。
従って、第１、第２内圧防爆容器１，４のパージが同時に開始されると第１内圧防爆容器１のパージの完了に係らず第２内圧防爆容器４のタイマ経過時間がカウントされるので時間のロスがない。
その結果、
１）装置の電源立ち上げ時間が早くなる。
２）従来生じていた時間ロス分のパージガスが無駄になることがない。
３）ガスクロのように温調する必要がある装置の場合、パージが破れた後の再起動時に、電源断の時間が短くなることで温度ずれが生じることがなく電源投入後のスタンバイ時間を短くすることができる。
４）第２内圧防爆容器４のパージが維持されていれば、第１内圧防爆容器１のパージが破れても、第２タイマ１３の電源が切れてタイマリセットされてしまうことがなく、第２タイマ１３の再カウントをする必要がない。
In FIG. 1, the second timer 13 in the first internal pressure explosion-proof container is turned on regardless of whether or not the purge of the first internal pressure explosion-proof container is completed.
Therefore, when the purge of the first and second internal pressure explosion-proof containers 1 and 4 is started simultaneously, the elapsed time of the timer of the second internal pressure explosion-proof container 4 is counted regardless of the completion of the purge of the first internal pressure explosion-proof container 1. There is no loss.
as a result,
1) The power-on time of the device is shortened.
2) The purge gas corresponding to the time loss that has conventionally occurred is not wasted.
3) In the case of a device that needs to be temperature controlled, such as a gas chromatograph, when restarting after the purge is broken, the power-off time is shortened, so that there is no temperature shift and the standby time after power-on is shortened. can do.
4) If the purge of the second internal pressure explosion-proof container 4 is maintained, even if the purge of the first internal pressure explosion-proof container 1 is broken, the power of the second timer 13 is not cut off and the timer is not reset. There is no need to recount the timer 13.
なお、以上の説明は、本発明の説明および例示を目的として特定の好適な実施例を示したに過ぎない。例えば、実施例では内圧防爆容器が２段の場合について説明したが、３段以上であっても同様に内圧防爆容器内に耐圧防爆容器を配置して、その中に電力発生手段とタイマを配置してタイマのカウントを行うことにより同様の効果を得ることができる。
従って本発明は、上記実施例に限定されることなく、その本質から逸脱しない範囲で更に多くの変更、変形を含むものである。
The above description merely shows a specific preferred embodiment for the purpose of explanation and illustration of the present invention. For example, in the embodiment, the case where the internal pressure explosion-proof container has two stages has been described, but even if there are three or more stages, the explosion-proof container is similarly arranged in the internal pressure explosion-proof container, and the power generation means and the timer are arranged therein. The same effect can be obtained by counting the timer.
Therefore, the present invention is not limited to the above-described embodiments, and includes many changes and modifications without departing from the essence thereof.
１ 第１内圧防爆容器
２、１４ 耐圧防爆容器
３ 第１リレー
４ 第２内圧防爆容器
５ 第２リレー
６ 第１発熱装置（電子回路）
７ 第２発熱装置（電子回路）
８，９ ガス導入口
１０，１１ ガス排出口
１２ 第１タイマ
１３ 第２タイマ
１５ 電力供給手段（電池など）
DESCRIPTION OF SYMBOLS 1 1st internal pressure explosion-proof container 2, 14 Pressure-proof explosion-proof container 3 1st relay 4 2nd internal pressure explosion-proof container 5 2nd relay 6 1st heat generating apparatus (electronic circuit)
7 Second heating device (electronic circuit)
8,9 Gas inlet port 10,11 Gas outlet port 12 First timer 13 Second timer 15 Power supply means (battery, etc.)
Claims (2)
前記耐圧防爆容器内に配置され、前記第１タイマからの出力信号に応じて電源のオンオフを行う第１リレーと、
第１内圧防爆容器内に配置され前記第１リレーのオン時に前記電源が供給される第１発熱装置と、前記第１内圧防爆容器内に配置された第２耐圧防爆容器と、該第２耐圧防爆容器内に配置された電力供給手段、及び該電力発生手段に接続された第２タイマと、前記第１内圧防爆容器内に配置され前記第２タイマからの出力信号に応じて前記電源のオンオフを行う第２リレーと、
第２内圧防爆容器に配置され前記第２リレーのオン時に前記電源が供給される第２発熱装置と、
前記第１、第２内圧防爆容器内のパージ状態の正常、異常に応じて前記第１、第２タイマのカウントを開始または停止を行うモニタリング手段と、を具備したことを特徴とするパージ用タイマ。 A first timer disposed in a flameproof container and connected to a power source;
A first relay disposed in the explosion-proof container and turning on and off in response to an output signal from the first timer;
A first heat generating device disposed in the first internal pressure explosion-proof container and supplied with the power when the first relay is turned on, a second pressure-resistant explosion-proof container disposed in the first internal pressure explosion-proof container, and the second pressure resistance Power supply means arranged in the explosion-proof container, a second timer connected to the power generation means, and on / off of the power supply according to an output signal from the second timer arranged in the first internal pressure explosion-proof container A second relay for performing
A second heat generating device disposed in a second internal pressure explosion-proof container and supplied with the power when the second relay is turned on;
A purge timer comprising: monitoring means for starting or stopping the counting of the first and second timers depending on whether the purge state in the first and second internal pressure explosion-proof containers is normal or abnormal .
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017047159A1 (en) * | 2015-09-17 | 2017-03-23 | 三菱重工業株式会社 | Explosion-proof device |
| JP2019013105A (en) * | 2017-06-30 | 2019-01-24 | 新コスモス電機株式会社 | Explosion proof power supply device |
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| JPH0650784U (en) * | 1992-12-15 | 1994-07-12 | 川崎重工業株式会社 | Internal pressure explosion-proof robot |
| JP2006326726A (en) * | 2005-05-25 | 2006-12-07 | Yaskawa Electric Corp | Inner pressure explosion preventing system and scavenging method therefor |
Cited By (5)
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| WO2017047159A1 (en) * | 2015-09-17 | 2017-03-23 | 三菱重工業株式会社 | Explosion-proof device |
| EP3352316A4 (en) * | 2015-09-17 | 2019-05-01 | Mitsubishi Heavy Industries, Ltd. | Explosion-proof device |
| US10840763B2 (en) | 2015-09-17 | 2020-11-17 | Mitsubishi Heavy Industries, Ltd. | Explosion-proof device |
| JP2019013105A (en) * | 2017-06-30 | 2019-01-24 | 新コスモス電機株式会社 | Explosion proof power supply device |
| JP7053176B2 (en) | 2017-06-30 | 2022-04-12 | 新コスモス電機株式会社 | Explosion-proof power supply |
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