JP2009243726A5 - - Google Patents
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- JP2009243726A5 JP2009243726A5 JP2008089210A JP2008089210A JP2009243726A5 JP 2009243726 A5 JP2009243726 A5 JP 2009243726A5 JP 2008089210 A JP2008089210 A JP 2008089210A JP 2008089210 A JP2008089210 A JP 2008089210A JP 2009243726 A5 JP2009243726 A5 JP 2009243726A5
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- function
- signal
- cooling tank
- reception
- cooler
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- 238000001816 cooling Methods 0.000 claims description 50
- 238000001514 detection method Methods 0.000 claims description 14
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims 1
- 239000000498 cooling water Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
本発明は、発電所に設置された冷却装置が付着物質による目詰まりを検出する冷却タンクの目詰まり検出装置に関するものである。 The present invention relates to a clogging detection device for a cooling tank in which a cooling device installed in a power plant detects clogging due to adhered substances.
従来、発電所における冷却装置としては、図3及び図4に示すように、冷却タンク1の端部に冷却水流入口2と冷却水流出口3が装着され、冷却タンク1の流入口2の近傍に管板4が固着され、流出口3の近傍に管板5が固着され、管板4,5に複数の孔が形成され、これらの孔に複数の冷却器管6の端部が挿入されて固着され、流入口2の近傍の冷却タンク1にのぞき窓7が形成され、冷却タンク1の側面に冷却される液体が流入する被冷却水流入口8及び冷却される液体が流出する被冷却水流出口9が固着されている。 Conventionally, as a cooling device in the power plant, as shown in FIGS. 3 and 4, the end of the cooling tank 1 is cooling water inlet 2 and the cooling water outlet port 3 is mounted, near the inlet 2 of the cooling tank 1 The tube plate 4 is fixed to the tube plate 5, the tube plate 5 is fixed to the vicinity of the outlet 3, the tube plates 4 and 5 are formed with a plurality of holes, and the ends of the plurality of cooler tubes 6 are inserted into these holes. fixed Te, windows 7 except the cooling tank 1 in the vicinity of the inlet port 2 is formed, the cooling liquid of the liquid that will be cooled on the side surface of the cooling tank 1s are the cooling water inlet 8 and a cooling flows flows out water outlet 9 is fixed.
このように構成された冷却タンク1では、図5に示すように、仕切り板4から冷却器管6の導入口6aを見ると、冷却器管6の内部がみえているが、冷却水として海水を使用しているので、図6に示すように、冷却器管6の導入口6aや冷却器管6の内部に付着生物や冷却水に浮遊している泥が付着し、冷却器管6の導入口6aが塞がって、冷却水の流量が低下し、冷却効果が悪くなったり、冷却器管6の漏洩を引き起こし、冷却ができなくなるという問題があり、この冷却ができなくなる状態を検知する必要があるという問題があり、冷却器管経路内に泥や付着生物が付着すると、流体抵抗の増加により取水ポンプの負荷が増大し、冷却効率が低下し、冷却器管の閉塞というような被害を与えるために、定期的に清掃や付着生物対策を行う必要があるが、冷却器内部の汚れ具合を確認する方法がなく、的確な洗浄タイミングが把握できないという問題があった。
解決しようとする問題点は、従来の冷却装置では、側壁や冷却器管6の導入口6aや冷却器管6の内部に付着生物や冷却水に浮遊している泥が付着し、冷却器管6の導入値6aが塞がって、冷却水の流量が低下し、冷却ができなくなるという問題があり、この冷却ができなくなる状態を検知する必要があるという問題があった。 The problem to be solved is that in the conventional cooling device, adhering organisms and mud floating in the cooling water adhere to the side wall, the inlet 6a of the cooler pipe 6 and the inside of the cooler pipe 6, and the cooler pipe There is a problem that the introduction value 6a of 6 is blocked, the flow rate of the cooling water decreases, and cooling cannot be performed, and it is necessary to detect a state in which this cooling cannot be performed.
本発明では、冷却タンクの側壁に対向して装着された超音波振動子と、該超音波振動子に発振出力を送信する発振機能、前記超音波振動子からの受信信号を受信する受信機能、該受信機能からの受信信号を入力する比較機能、該比較機能において、入力された受信信号と比較する予め決められた閾値信号を発生する閾値信号発生機能、前記受信信号が前記閾値信号より大きくなったときに前記比較機能から出力される信号によって発生するアラーム信号発生機能からなり、本発明の機能はパーソナルコンピュータによって処理することも可能であり、任意の目詰まり又は付着厚によりアラームをだすこともでき、又、前記冷却タンクは内部に間隔を開けて装着された管板にほぼ平行な複数の冷却器管の両端がそれぞれ固着され、該冷却器管の一端の流入口から流入された冷却液が前記冷却器管を通過して流れ、前記冷却器管の間を冷却される液体が通過するように側面に液体流入管体及び対向部に液体流出管体が装着され、前記複数の冷却器管の一端が固着された管板に向けて前記超音波振動子から超音波を照射するようにしたものであり、前記超音波振動子は前記冷却器管の他端が固着された管板に向けて超音波を照射するようにしたものである。 In the present invention, an ultrasonic transducer mounted facing the side wall of the cooling tank, an oscillation function for transmitting an oscillation output to the ultrasonic transducer, a reception function for receiving a reception signal from the ultrasonic transducer, A comparison function for inputting a reception signal from the reception function, a threshold signal generation function for generating a predetermined threshold signal to be compared with the input reception signal in the comparison function, and the reception signal is larger than the threshold signal The alarm signal generation function is generated by the signal output from the comparison function, and the function of the present invention can be processed by a personal computer, and an alarm can be generated by arbitrary clogging or adhesion thickness. The cooling tank is fixed to both ends of a plurality of cooler tubes that are substantially parallel to a tube plate that is mounted at an interval inside the cooling tank. The liquid flowing in from the inlet port of the end flows through the cooler tube, and the liquid cooled tube passes between the cooler tubes, and the liquid inflow tube on the side and the liquid outflow tube on the opposite side. A body is mounted, and ultrasonic waves are emitted from the ultrasonic transducer toward a tube plate to which one end of the plurality of cooler tubes is fixed, and the ultrasonic transducer is the cooler tube The ultrasonic wave is irradiated toward the tube plate to which the other end is fixed.
本発明の冷却タンクの目詰まり検出装置では、冷却装置の内部又はのぞき窓に超音波振動子を装着し、パーソナルコンピュータの発振機能によって超音波振動子に発振信号を印可し、超音波振動子から照射される超音波の反射波が管板に向けて照射されると、その反射波は管板の冷却器管の孔からの反射波がないことによって冷却器管が目詰まりしていないことを検出し、反射波信号が強くなることによって目詰まりが多くなるので、予め決められた閾値により反射信号が強くなると、目詰まりしていることをアラーム等で報知することができるという利点がある。 In the cooling tank clogging detection device of the present invention, an ultrasonic vibrator is mounted in the cooling device or in the observation window, and an oscillation signal is applied to the ultrasonic vibrator by the oscillation function of the personal computer. When the reflected wave of the irradiated ultrasonic wave is irradiated toward the tube plate, the reflected wave does not clog the cooler tube because there is no reflected wave from the hole of the cooler tube of the tube plate. Since detection increases and the reflected wave signal becomes stronger, clogging increases, and if the reflected signal becomes stronger with a predetermined threshold, there is an advantage that it can be notified by an alarm or the like.
本発明では、冷却タンクの内部又は管板に固着された冷却器管の面を超音波振動子から超音波を照射し、その反射波をパーソナルコンピュータの受信機能で受信し、受信した信号を比較機能で予め決められた閾値信号と順次比較し、受信信号が予め決められた閾値信号より強くなるとアラームで報知するものである。 In the present invention, the ultrasonic wave is irradiated from the ultrasonic vibrator to the inside of the cooling tank or the surface of the cooler tube fixed to the tube plate, the reflected wave is received by the reception function of the personal computer, and the received signals are compared. The function is sequentially compared with a threshold signal determined in advance by the function, and an alarm is given when the received signal becomes stronger than the threshold signal determined in advance.
図1は本発明の実施例の冷却タンクの目詰まり検出装置の構成図で、1は冷却タンクで、超音波振動子10は冷却タンク1の内部の側壁1aに装着されて対向する側壁に向けて超音波が照射され、又超音波振動子10はパーソナルコンピュータ11の発振機能11a及び受信機能11bに接続され、受信機能11bは比較機能11cに接続され、比較機能11cに閾値信号発生機能11dから閾値信号が入力され、又、比較機能11cの出力側にアラーム信号発生機能11eが接続されている。 FIG. 1 is a configuration diagram of a cooling tank clogging detection apparatus according to an embodiment of the present invention. Reference numeral 1 denotes a cooling tank, and an ultrasonic transducer 10 is mounted on a side wall 1a inside the cooling tank 1 and faces the opposite side wall. The ultrasonic transducer 10 is connected to the oscillation function 11a and the reception function 11b of the personal computer 11, the reception function 11b is connected to the comparison function 11c, and the comparison function 11c is connected to the threshold signal generation function 11d. A threshold signal is input, and an alarm signal generation function 11e is connected to the output side of the comparison function 11c.
このように構成された本実施例の冷却装置の目詰まり検出装置では、冷却タンク1の側壁1aに装着された超音波振動子10にパーソナルコンピュータ11の発振機能11aから一定時間毎に発信出力が印可されると、超音波振動子10から超音波が対向壁1bに向けて照射されるが、付着生物や冷却水に浮遊している泥が堆積していない状態であれば、反射波はそのまま超音波振動子10に戻るので、受信信号に変化はないが、超音波振動子10の対向壁面1bに付着生物や冷却水に浮遊している泥が堆積すると、超音波振動子10と対向壁面1bとの間隔が狭くなるため、超音波の反射波が強くなると、パーソナルコンピュータ11の受信機能11bで受信して、比較機能11cで閾値信号発生機能11dからの閾値信号と比較することにより、受信信号の受信量が閾値信号より高くなり、それによって比較機能11cから信号が出力され、この信号でアラーム信号発生機能よりアラーム信号が発生し、このアラーム信号でブザー等からアラーム信号が発生する。 In the clogging detection device of the cooling apparatus of the present embodiment configured as described above, a transmission output is sent from the oscillation function 11a of the personal computer 11 to the ultrasonic vibrator 10 mounted on the side wall 1a of the cooling tank 1 at regular intervals. When applied, ultrasonic waves are radiated from the ultrasonic transducer 10 toward the opposing wall 1b, but the reflected waves remain as they are if no adhering organisms or mud floating in the cooling water is deposited. Since the signal is returned to the ultrasonic transducer 10, there is no change in the received signal. However, if adhering organisms or mud floating in the cooling water accumulates on the opposing wall surface 1b of the ultrasonic transducer 10, the ultrasonic transducer 10 and the opposing wall surface When the reflected wave of the ultrasonic wave becomes strong because the interval with 1b becomes narrow, it is received by the reception function 11b of the personal computer 11, and compared with the threshold signal from the threshold signal generation function 11d by the comparison function 11c. As a result, the reception amount of the received signal becomes higher than the threshold signal, whereby a signal is output from the comparison function 11c, and an alarm signal is generated from the alarm signal generation function by this signal, and an alarm signal is generated from a buzzer or the like by this alarm signal To do.
本発明は、このように、冷却タンク1の壁面に付着生物や冷却水に浮遊している泥が堆積することを超音波により非接触で検知することができるという利点がある。 As described above, the present invention has an advantage that it is possible to detect non-contacting ultrasonic waves on the wall surface of the cooling tank 1 by accumulating living organisms or mud floating in the cooling water.
図2は本発明の他の実施例の冷却タンクの目詰まり検出装置の構成図で、1は冷却タンク、4は管板、6aは冷却器管6の導入口、7はのぞき窓で、これらの構成は上記従来例と同じ構成であるので、説明は省略するが、本実施例では、のぞき窓7に接触して超音波振動子10が装着され、超音波振動子10はパーソナルコンピュータ11の発振機能11a及び受信機能11bに接続され、受信機能11bは比較機能11cに接続され、比較機能11cに閾値信号発生機能11dから閾値信号が入力され、又、比較機能11cの出力側にアラーム信号発生機能11eが接続されている。 FIG. 2 is a block diagram of a cooling tank clogging detection apparatus according to another embodiment of the present invention. Reference numeral 1 denotes a cooling tank, 4 denotes a tube plate, 6a denotes an inlet of the cooler pipe 6, and 7 denotes a viewing window. However, in this embodiment, the ultrasonic transducer 10 is attached in contact with the observation window 7, and the ultrasonic transducer 10 is connected to the personal computer 11. Connected to the oscillation function 11a and the reception function 11b, the reception function 11b is connected to the comparison function 11c, a threshold signal is input from the threshold signal generation function 11d to the comparison function 11c, and an alarm signal is generated on the output side of the comparison function 11c Function 11e is connected.
このように構成された本実施例の冷却装置の目詰まり検出装置では、冷却タンク1のぞき窓7に接触して装着された超音波振動子10にパーソナルコンピュータ11の発振機能11aから一定時間毎に発信出力が印可されると、超音波振動子10から超音波が管板5に向けて照射されるが、図5に示すように、管板5に固着された冷却器管6に目詰まりがなけれぱ、管板5から超音波が反射されるが、冷却器管6の導入口6aが孔になっており、反射波は逸れて超音波振動子10に戻らないので、超音波の受信量が少なく、従って、受信された超音波が受信機能11cに入力され、閾値信号発生器11dからの閾値信号より強度が低いので、比較機能11cからアラーム信号は発生しない。 In the clogging detection device of the cooling apparatus of the present embodiment configured as described above, the ultrasonic vibrator 10 mounted in contact with the observation window 7 of the cooling tank 1 is set at regular intervals from the oscillation function 11a of the personal computer 11. When the transmission output is applied, ultrasonic waves are emitted from the ultrasonic transducer 10 toward the tube plate 5, but the cooler tube 6 fixed to the tube plate 5 is clogged as shown in FIG. 5. Otherwise, the ultrasonic wave is reflected from the tube plate 5, but the inlet 6a of the cooler tube 6 is a hole, and the reflected wave is deviated and does not return to the ultrasonic transducer 10, so the amount of received ultrasonic waves Therefore, since the received ultrasonic wave is input to the reception function 11c and is lower in intensity than the threshold signal from the threshold signal generator 11d, no alarm signal is generated from the comparison function 11c.
ここで、時間が経て図6に示すように管板4に固着されている冷却器管6の端部6aに目詰まりが生じると、超音波振動子10から照射された超音波は管板5の冷却器管6の導入口6aからの反射信号が強くなるので、パーソナルコンピュータ11の受信機能11bで受信して、比較機能11cで閾値信号発生機能11dからの閾値信号と比較すると、受信信号の受信量が多くなることにより、比較機能11cから信号が出力され、それによってアラーム信号発生機能よりアラーム信号が発生し、このアラーム信号でブザー等からアラーム信号が発生する。 Here, when the time is clogged end 6a of the cooler tube 6 that is secured to the tube sheet 4 as shown in FIG. 6 occurs through, ultrasonic waves radiated from the ultrasonic transducer 10 is tubesheet 5 Since the reflected signal from the inlet 6a of the cooler tube 6 becomes stronger, the received signal is received by the receiving function 11b of the personal computer 11 and compared with the threshold signal from the threshold signal generating function 11d by the comparing function 11c . When the reception amount increases, a signal is output from the comparison function 11c , whereby an alarm signal is generated by the alarm signal generation function, and an alarm signal is generated from a buzzer or the like by this alarm signal.
本発明は、このように、冷却タンク1の管板4に一端が固着された冷却器管6の目詰まりをのぞき窓7に装着した超音波振動子10からの超音波により、非接触で検知することができるという利点がある。 In the present invention, the clogging of the cooler tube 6 whose one end is fixed to the tube plate 4 of the cooling tank 1 is thus detected in a non-contact manner by the ultrasonic wave from the ultrasonic vibrator 10 attached to the observation window 7. There is an advantage that you can.
なお、上記実施例において、パーソナルコンピュータ11の比較機能11cに温度センサから入力される温度情報による温度補正機能を持つようにしてもよいし、冷却タンク1の多数の冷却器管6の目詰まりを検出するように構成したが、細管を設けた他の冷却装置においても使用することができる。 In the above embodiment, the comparison function 11c of the personal computer 11 may have a temperature correction function based on temperature information input from the temperature sensor, and clogging of a large number of cooler tubes 6 in the cooling tank 1 may be performed. Although configured to detect, it can also be used in other cooling devices provided with a thin tube.
1 冷却タンク
2 冷却水流入口
3 冷却水流出口
4、5 管板
6 冷却器管
7 のぞき窓
8 被冷却水流入口
9 被冷却水流出口
10 超音波振動子
11 パーソナルコンピュータ
1 cooling tank 2 cooling water inlet port 3 the cooling water outlet 4,5 tubesheet 6 cooler pipe 7 peephole 8 the cooling water inlet port 9 be cooled water outlet 10 ultrasonic transducer 11 personal computer
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2008089210A JP5681863B2 (en) | 2008-03-31 | 2008-03-31 | Clogging detection device for cooling tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2008089210A JP5681863B2 (en) | 2008-03-31 | 2008-03-31 | Clogging detection device for cooling tank |
Publications (3)
Publication Number | Publication Date |
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JP2009243726A JP2009243726A (en) | 2009-10-22 |
JP2009243726A5 true JP2009243726A5 (en) | 2011-05-19 |
JP5681863B2 JP5681863B2 (en) | 2015-03-11 |
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JP2008089210A Expired - Fee Related JP5681863B2 (en) | 2008-03-31 | 2008-03-31 | Clogging detection device for cooling tank |
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JP5492282B1 (en) * | 2012-12-07 | 2014-05-14 | 旭国際テクネイオン株式会社 | Heat exchanger operation device |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS57124700A (en) * | 1981-01-26 | 1982-08-03 | Fuji Electric Co Ltd | Protecting device for water cooling type cooler |
JPS57175043U (en) * | 1981-04-28 | 1982-11-05 | ||
JPS63161396A (en) * | 1986-12-25 | 1988-07-05 | Mitsubishi Heavy Ind Ltd | Method of removing scales from shell and tube type heat exchanger |
JPH01223307A (en) * | 1988-03-02 | 1989-09-06 | Micro Tec Kk | Method for monitoring growth of aquatic life |
JP3175878B2 (en) * | 1993-08-11 | 2001-06-11 | 日本電信電話株式会社 | Pipeline internal state measurement method and apparatus |
JP4026402B2 (en) * | 2002-04-30 | 2007-12-26 | 栗田エンジニアリング株式会社 | Cleaning method of heat exchanger |
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2008
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