JPH0134120B2 - - Google Patents
Info
- Publication number
- JPH0134120B2 JPH0134120B2 JP13742685A JP13742685A JPH0134120B2 JP H0134120 B2 JPH0134120 B2 JP H0134120B2 JP 13742685 A JP13742685 A JP 13742685A JP 13742685 A JP13742685 A JP 13742685A JP H0134120 B2 JPH0134120 B2 JP H0134120B2
- Authority
- JP
- Japan
- Prior art keywords
- ignition
- relay
- timer
- temperature
- circuit
- 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
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000855 fermentation Methods 0.000 claims description 15
- 230000004151 fermentation Effects 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001079 digestive effect Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
本発明はメタン発酵槽の加温制御装置に関する
ものである。メタン発酵装置においてはその発酵
するメタンの一部を燃料としてガスボイラに供給
し、その温水によつて発酵槽の消化液を加温する
ことが行なわれる。しかし、発酵不良あるいは過
負荷のために発酵ガス中のメタン濃度が減少して
ボイラ温水による加温が十分に行なわれないとき
は、消化液の適正な温度を維持することができな
くなり、発酵が低下し、最終的には発酵を停止す
ることがある。本発明はこのような現象の発生す
るのを防止するために消化液の温度を常時、適正
な温度に維持してメタンの発酵を円滑に行なわせ
るメタン発酵槽の加温制御装置を提供することを
目的とするものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to a heating control device for a methane fermentation tank. In a methane fermentation device, part of the fermented methane is supplied to a gas boiler as fuel, and the digestive fluid in the fermenter is heated by the hot water. However, if the methane concentration in the fermentation gas decreases due to poor fermentation or overload, and the boiler hot water is not sufficiently heated, it becomes impossible to maintain the appropriate temperature of the digestive fluid, and the fermentation progresses. and may eventually stop fermentation. In order to prevent such a phenomenon from occurring, the present invention provides a heating control device for a methane fermentation tank that maintains the temperature of digestive fluid at an appropriate temperature at all times to ensure smooth fermentation of methane. The purpose is to
本発明のメタン発酵槽の加温制御装置は、メタ
ン発酵槽の消化液の温度を検出する液温サーミス
タと、該液温サーミスタの検出した温度を基準温
度と比較する比較器と、該比較器の出力によつて
動作する第１リレーとを備えた液温検知回路Ａ
と、
前記第１リレーの動作によつて燃焼を開始する
ガスボイラの着火を検出する着火サーミスタと、
該着火サーミスタの出力を基準電圧と比較する比
較器と、該比較器の出力によつて動作する第２リ
レーとを備えた着火検知回路Ｂと、
前記第１リレーの動作によつて前記ガスボイラ
が着火しないときに一定の休止期間をおいて再着
火動作を一定時間繰返えす第１タイマおよび第１
タイマリレーと、第２タイマおよび第２タイマリ
レーとを備えた着火タイマ回路Ｃと、
前記着火タイマ回路Ｃによつて繰返される着火
動作の回数をカウントするカウントコイルと、こ
のカウントコイルをリセツトするリセツトコイル
と、前記カウントコイルによつてカウントされた
着火動作の回数が所定値に達したときに動作する
第３リレーとを備えたプリセツトカウンタ回路Ｄ
と、
よりなり、前記第３リレーによつて駆動される電
気温水器等の補助加熱装置の加熱によつて前記消
化液の温度が所定の温度に達したときは、前記ガ
スボイラおよび前記補助加熱装置への給電を停止
すると共に、前記カウンタ回路Ｄのカウントをリ
セツトすることを特徴とする。
The heating control device for a methane fermentation tank of the present invention includes a liquid temperature thermistor that detects the temperature of digestive fluid in the methane fermentation tank, a comparator that compares the temperature detected by the liquid temperature thermistor with a reference temperature, and a comparator that compares the temperature detected by the liquid temperature thermistor with a reference temperature. A liquid temperature detection circuit A comprising a first relay operated by the output of
and an ignition thermistor that detects ignition of the gas boiler that starts combustion due to the operation of the first relay.
an ignition detection circuit B comprising a comparator that compares the output of the ignition thermistor with a reference voltage; and a second relay that operates according to the output of the comparator; a first timer that repeats the re-ignition operation for a certain period of time after a certain pause period when the ignition does not occur;
An ignition timer circuit C including a timer relay, a second timer and a second timer relay, a count coil for counting the number of ignition operations repeated by the ignition timer circuit C, and a reset circuit for resetting the count coil. A preset counter circuit D comprising a coil and a third relay that operates when the number of ignition operations counted by the count coil reaches a predetermined value.
and, when the temperature of the digestive fluid reaches a predetermined temperature due to heating by an auxiliary heating device such as an electric water heater driven by the third relay, the gas boiler and the auxiliary heating device It is characterized in that the count of the counter circuit D is reset at the same time as the power supply to the counter circuit D is stopped.
本発明の実施例を図面について説明する。Ａは
メタン発酵槽の温度（消化液の温度）を検出する
液温検知回路で、液温を検知する液温サーミスタ
１と、基準温度を設定する抵抗２ａ，２ｂ，２ｃ
と、これらを比較する電圧比較器３と、スイツチ
ングトランジスタ４と、第１リレー５とよりな
る。５ａは第１リレー５の常開接点、５ｂは常閉
接点である。Ｂはメタン発酵槽に加温用の温水を
供給するガスボイラ６の着火の有無を検出する着
火検知回路で、着火サーミスタ７と基準電圧を設
定する抵抗８ａ，８ｂ，８ｃと電圧比較器９と、
スイツチングトランジスタ１０と、第２リレー１
１とよりなる。１１ａおよび１１ｂは第２リレー
１１の常開接点である。Ｃは着火タイマ回路で、
第１タイマ１２およびこれと並列に接続された第
１タイマリレー１３と、第２タイマ１４およびこ
れと並列に接続された第２タイマリレー１５とよ
りなる。１２ａは第１タイマ１２の限時開接点、
１２ｂは限時閉接点、１３ａは第１タイマリレー
１３の常開接点、１４ａは第２タイマ１４の限時
閉接点、１５ａは第２タイマリレー１５の常開接
点、１５ｂは常閉接点である。Ｄはプリセツトカ
ウンタ回路でカウントコイル１６と、リセツトコ
イル１７と、常開のカウンタ接点１８によつて接
続された第３リレー１９よりなる。１９ａは第３
リレー１９の常開接点、１９ｂは常閉接点、２０
はガスボイラ６の補助として設けた電気温水器で
ある。 Embodiments of the present invention will be described with reference to the drawings. A is a liquid temperature detection circuit that detects the temperature of the methane fermentation tank (temperature of digestive fluid), which includes a liquid temperature thermistor 1 that detects the liquid temperature, and resistors 2a, 2b, and 2c that set the reference temperature.
, a voltage comparator 3 for comparing these, a switching transistor 4, and a first relay 5. 5a is a normally open contact of the first relay 5, and 5b is a normally closed contact. B is an ignition detection circuit that detects whether or not the gas boiler 6 that supplies hot water for heating to the methane fermentation tank is ignited;
switching transistor 10 and second relay 1
1 and more. 11a and 11b are normally open contacts of the second relay 11. C is the ignition timer circuit,
It consists of a first timer 12 and a first timer relay 13 connected in parallel thereto, and a second timer 14 and a second timer relay 15 connected in parallel thereto. 12a is a time-limited open contact of the first timer 12;
12b is a time-limited contact, 13a is a normally open contact of the first timer relay 13, 14a is a time-limited contact of the second timer 14, 15a is a normally open contact of the second timer relay 15, and 15b is a normally closed contact. D is a preset counter circuit consisting of a count coil 16, a reset coil 17, and a third relay 19 connected by a normally open counter contact 18. 19a is the third
Normally open contact of relay 19, 19b is normally closed contact, 20
is an electric water heater provided as an auxiliary to the gas boiler 6.
次にその作用を説明する。液温サーミスタ１の
検知した液温が、抵抗２ｂ，２ｃによつて設定さ
れた基準温度（35℃）以下になると電圧比較器３
の出力によつてトランジスタ４がオンとなり、第
１リレー５がオンとなる。第１リレー５がオンに
なると常開接点５ａが閉じ、ガスボイラ６はオン
となり、同時に第１タイマ１２と第１タイマリレ
ー１３がオンになる。第１タイマ１２は設定され
たオン時間t1が経過すると限時閉接点１２ｂを開
き限時開接点１２ａを閉じる。限時閉接点１２ｂ
がオフになるとガスボイラ６と第１タイマリレー
１３はオフになる。一方、限時開接点１２ａのオ
ンにより第２タイマ１４がオンになると第２タイ
マ１４の限時接点１４ａはその設定時間t2の間第
２タイマリレー１５をオンにする。第２タイマリ
レー１５のオンによりその常開接点１５ａがオン
になり、第２タイマ１４のオンを自己保持する。
一方、第２タイマリレー１５の常閉接点１５ｂは
開いている。時間t2が経過すると第２タイマ１４
の限時接点１４ａはオフとなるので第２タイマリ
レー１５はオフになり、その常閉接点１５ｂは再
びオンとなる。したがつて第１タイマ１２と第１
タイマリレー１３とガスボイラ６はオンとなる。
そしてガスボイラ６に着火され、着火検知回路Ｂ
の着火サーミスタ７の検知する温度が抵抗８ｂ，
８ｃによつて設定された基準温度に達するまで
は、上記のオンオフの動作が繰返される。そして
着火サーミスタ７の検知する温度が基準温度に達
すると第２リレー１１は常開接点１１ａを閉じガ
スボイラ６のオンを保持する。 Next, its effect will be explained. When the liquid temperature detected by the liquid temperature thermistor 1 becomes lower than the reference temperature (35°C) set by the resistors 2b and 2c, the voltage comparator 3
Transistor 4 is turned on by the output of , and first relay 5 is turned on. When the first relay 5 is turned on, the normally open contact 5a is closed, the gas boiler 6 is turned on, and at the same time the first timer 12 and the first timer relay 13 are turned on. The first timer 12 opens the time-limited close contact 12b and closes the time-limited open contact 12a when the set on-time t1 has elapsed. Time-limited closing contact 12b
When turned off, the gas boiler 6 and the first timer relay 13 are turned off. On the other hand, when the second timer 14 is turned on by the time-limited opening contact 12a, the time-limited contact 14a of the second timer 14 turns on the second timer relay 15 for the set time t2 . When the second timer relay 15 is turned on, its normally open contact 15a is turned on, and the second timer 14 is kept on by itself.
On the other hand, the normally closed contact 15b of the second timer relay 15 is open. When the time t2 has elapsed, the second timer 14
Since the time limit contact 14a is turned off, the second timer relay 15 is turned off, and its normally closed contact 15b is turned on again. Therefore, the first timer 12 and the first
Timer relay 13 and gas boiler 6 are turned on.
Then, the gas boiler 6 is ignited, and the ignition detection circuit B
The temperature detected by the ignition thermistor 7 of the resistor 8b,
The above-mentioned on/off operation is repeated until the reference temperature set by 8c is reached. When the temperature detected by the ignition thermistor 7 reaches the reference temperature, the second relay 11 closes the normally open contact 11a to keep the gas boiler 6 turned on.
ガスボイラ６が何んらかの原因で着火しない場
合は、t1時間のオン、t2時間のオフのサイクルを
繰返して着火動作をするがカウントコイル１６に
よつてカウントされた着火回数がプリセツトカウ
ンタ回路Ｄの予め設定された回数（例えば５回）
に達すると常開のカウンタ接点１８が閉じ、第３
リレー１９がオンになる。第３リレー１９のオン
により、その常閉接点１９ｂはオフになりガスボ
イラ６はオフになる。同時に第３リレー１９の常
開接点１９ａはオンとなり、電気温水器２０に給
電され、電気温水器２０による加温が行なわれ
る。そして消化液の温度が規定の温度（35℃）に
達し、液温サーミスタ１がこれを検知すると第１
リレー５が動作してその常閉接点５ｂはオンにな
るのでリセツトコイル１７はリセツトされ、かつ
カウンタ接点１８はオフになる。同時に第１リレ
ー５の常開接点５ａもオフになるので、ガスボイ
ラ６および電気温水器２０は共にオフとなり給電
が停止される。 If the gas boiler 6 does not ignite for some reason, it repeats the cycle of being on for 1 hour and off for 2 hours, but the number of ignitions counted by the count coil 16 is preset. Preset number of times of counter circuit D (for example, 5 times)
When the contact point 18, which is normally open, is closed, the third
Relay 19 is turned on. When the third relay 19 is turned on, its normally closed contact 19b is turned off and the gas boiler 6 is turned off. At the same time, the normally open contact 19a of the third relay 19 is turned on, power is supplied to the electric water heater 20, and the electric water heater 20 performs heating. When the temperature of the digestive fluid reaches the specified temperature (35℃) and the liquid temperature thermistor 1 detects this, the first
Since the relay 5 is operated and its normally closed contact 5b is turned on, the reset coil 17 is reset and the counter contact 18 is turned off. At the same time, the normally open contact 5a of the first relay 5 is also turned off, so both the gas boiler 6 and the electric water heater 20 are turned off and power supply is stopped.
以上述べたように本発明の装置は発酵槽の液温
が所定の温度以下になつたときは液温検知回路Ａ
の第１リレー５が動作してガスボイラ６をオンに
する。そしてメタンガスの濃度が低く、ガスボイ
ラ６が点火しないときは着火タイマ回路Ｃは一定
の休止時間をおいて着火動作を繰返し、プリセツ
トカウンタ回路Ｄはこの着火動作の回数をカウン
トして所定の回数に達するとガスボイラ６への給
電を停止して電気温水器２０に給電する。そして
発酵槽の温度が所定の温度に達するとガスボイラ
６および電気温水器２０への給電を停止するよう
構成されており、消化液の加熱手段として発酵ガ
スを燃料とするガスボイラを優先し、発酵ガスに
よる加熱が不能のときにおいてのみ、自動的に別
個の補助加熱装置（電気温水器）によつて加熱す
るよう構成されているので発酵ガスを有効に、か
つ合理的に使用すると共に、メタンの発酵を円滑
にする、すぐれた効果を有する。
As described above, in the device of the present invention, when the liquid temperature in the fermenter falls below a predetermined temperature, the liquid temperature detection circuit A
The first relay 5 operates to turn on the gas boiler 6. When the concentration of methane gas is low and the gas boiler 6 does not ignite, the ignition timer circuit C repeats the ignition operation after a certain pause time, and the preset counter circuit D counts the number of times of this ignition operation and reaches a predetermined number of times. When this temperature is reached, power supply to the gas boiler 6 is stopped and power is supplied to the electric water heater 20. When the temperature of the fermenter reaches a predetermined temperature, the power supply to the gas boiler 6 and the electric water heater 20 is stopped, and the gas boiler that uses fermentation gas as fuel is prioritized as a heating means for the digestive fluid. It is configured to automatically heat with a separate auxiliary heating device (electric water heater) only when heating by It has an excellent effect of smoothing the process.
図は本発明の加温制御装置の実施例の電気回路
図である。
Ａ……液温検知回路、１……液温サーミスタ、
２ａ，２ｂ，２ｃ……抵抗、３……電圧比較器、
４……トランジスタ、５……第１リレー、６……
ガスボイラ、Ｂ……着火検知回路、７……着火サ
ーミスタ、８ａ，８ｂ，８ｃ……抵抗、９……電
圧比較器、１０……トランジスタ、１１……第２
リレー、Ｃ……着火タイマ回路、１２……第１タ
イマ、１３……第１タイマリレー、１４……第２
タイマ、１５……第２タイマリレー、Ｄ……プリ
セツトカウンタ回路、１６……カウントコイル、
１７……リセツトコイル、１８……カウンタ接
点、１９……第３リレー、２０……電気温水器。
The figure is an electrical circuit diagram of an embodiment of the heating control device of the present invention. A...Liquid temperature detection circuit, 1...Liquid temperature thermistor,
2a, 2b, 2c...Resistor, 3...Voltage comparator,
4...Transistor, 5...First relay, 6...
Gas boiler, B...Ignition detection circuit, 7...Ignition thermistor, 8a, 8b, 8c...Resistor, 9...Voltage comparator, 10...Transistor, 11...Second
Relay, C...Ignition timer circuit, 12...First timer, 13...First timer relay, 14...Second
Timer, 15...Second timer relay, D...Preset counter circuit, 16...Count coil,
17...Reset coil, 18...Counter contact, 19...Third relay, 20...Electric water heater.
Claims (1)
サーミスタと、該液温サーミスタの検出した温度
を基準温度と比較する比較器と、該比較器の出力
によつて動作する第１リレーとを備えた液温検知
回路Ａと、 前記第１リレーの動作によつて燃焼を開始する
ガスボイラの着火を検出する着火サーミスタと、
該着火サーミスタの出力を基準電圧と比較する比
較器と、該比較器の出力によつて動作する第２リ
レーとを備えた着火検知回路Ｂと、 前記第１リレーの動作によつて前記ガスボイラ
が着火しないときに一定の休止期間をおいて再着
火動作を一定時間繰返えす第１タイマおよび第１
タイマリレーと、第２タイマおよび第２タイマリ
レーとを備えた着火タイマ回路Ｃと、 前記着火タイマ回路Ｃによつて繰返される着火
動作の回数をカウントするカウントコイルと、こ
のカウントコイルをリセツトするリセツトコイル
と、前記カウントコイルによつてカウントされた
着火動作の回数が所定値に達したときに動作する
第３リレーとを備えたプリセントカウンタ回路Ｄ
と、 よりなり、前記第３リレーによつて駆動される電
気温水器等の補助加熱装置の加熱によつて前記消
化液の温度が所定の温度に達したときは、前記ガ
スボイラおよび前記補助加熱装置への給電を停止
すると共に、前記カウンタ回路Ｄのカウントをリ
セツトすることを特徴とするメタン発酵槽の加温
制御装置。[Claims] 1. A liquid temperature thermistor that detects the temperature of the digestive fluid in the methane fermentation tank, a comparator that compares the temperature detected by the liquid temperature thermistor with a reference temperature, and operates based on the output of the comparator. a liquid temperature detection circuit A comprising a first relay, and an ignition thermistor that detects ignition of a gas boiler that starts combustion by the operation of the first relay;
an ignition detection circuit B comprising a comparator that compares the output of the ignition thermistor with a reference voltage; and a second relay that operates according to the output of the comparator; a first timer that repeats the re-ignition operation for a certain period of time after a certain pause period when the ignition does not occur;
An ignition timer circuit C including a timer relay, a second timer, and a second timer relay; a count coil for counting the number of ignition operations repeated by the ignition timer circuit C; and a reset circuit for resetting the count coil. A precent counter circuit D comprising a coil and a third relay that operates when the number of ignition operations counted by the count coil reaches a predetermined value.
and, when the temperature of the digestive fluid reaches a predetermined temperature due to heating by an auxiliary heating device such as an electric water heater driven by the third relay, the gas boiler and the auxiliary heating device A heating control device for a methane fermentation tank, characterized in that it stops power supply to the tank and resets the count of the counter circuit D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60137426A JPS621500A (en) | 1985-06-24 | 1985-06-24 | Heating control apparatus of methane fermentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60137426A JPS621500A (en) | 1985-06-24 | 1985-06-24 | Heating control apparatus of methane fermentation tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS621500A JPS621500A (en) | 1987-01-07 |
| JPH0134120B2 true JPH0134120B2 (en) | 1989-07-18 |
Family
ID=15198350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60137426A Granted JPS621500A (en) | 1985-06-24 | 1985-06-24 | Heating control apparatus of methane fermentation tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS621500A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08318422A (en) * | 1995-05-22 | 1996-12-03 | Kandenko Co Ltd | Cutting machine underground buried pipe for cable |
| CN104030538A (en) * | 2013-03-07 | 2014-09-10 | 周海云 | Comprehensive biogas utilization system |
-
1985
- 1985-06-24 JP JP60137426A patent/JPS621500A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08318422A (en) * | 1995-05-22 | 1996-12-03 | Kandenko Co Ltd | Cutting machine underground buried pipe for cable |
| CN104030538A (en) * | 2013-03-07 | 2014-09-10 | 周海云 | Comprehensive biogas utilization system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS621500A (en) | 1987-01-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |