JP4774351B2 - Water jet compressor - Google Patents

Water jet compressor Download PDF

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JP4774351B2
JP4774351B2 JP2006280869A JP2006280869A JP4774351B2 JP 4774351 B2 JP4774351 B2 JP 4774351B2 JP 2006280869 A JP2006280869 A JP 2006280869A JP 2006280869 A JP2006280869 A JP 2006280869A JP 4774351 B2 JP4774351 B2 JP 4774351B2
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water
compressor
temperature
separator
air
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JP2008095643A (en
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文夫 武田
仁 西村
夏樹 川端
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Hitachi Industrial Equipment Systems Co Ltd
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Hitachi Industrial Equipment Systems Co Ltd
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Priority to CN2007101424063A priority patent/CN101165347B/en
Priority to BE2007/0402A priority patent/BE1018906A3/en
Priority to US11/844,053 priority patent/US8459957B2/en
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Description

本発明はセパレータ（水タンク）内の水を圧縮機内部に噴射し、圧縮空気と共にセパレータ内に吐出し、分離する水噴射圧縮機に関し、特に循環水の劣化を防ぎ水質の安全管理を行うものに好適である。   The present invention relates to a water-injection compressor that injects water in a separator (water tank) into a compressor, discharges it into the separator together with compressed air, and separates it, and in particular, prevents deterioration of circulating water and performs safety management of water quality. It is suitable for.

従来、循環水の不純物濃度を低減して水を補給することなく長時間連続運転するため、圧縮空気を水タンクに供給し、水タンクを出た圧縮空気を冷却して分離した水分を圧縮機内に供給し、余剰循環水を水タンクから排出することが知られ、例えば特許文献１に記載されている。   Conventionally, in order to reduce the impurity concentration of circulating water and operate continuously for a long time without replenishing water, compressed air is supplied to the water tank, the compressed air that has exited the water tank is cooled, and the separated moisture is stored in the compressor. It is known that the excess circulating water is discharged from the water tank, and is described in Patent Document 1, for example.

特開２０００−４５９４８号公報JP 2000-45948 A

上記従来技術では圧縮機が稼動している間は常に圧縮空気中から凝縮した水が補給されるのと、圧縮機内で高圧高温となるため、黴菌（ばいきん）の繁殖は抑えられる。しかし、圧縮機を停止した時間が長くなると、セパレータおよび配管内の水は大気温度に近くなり、空気中の黴菌がセパレータや配管中に残留する水の中で繁殖する恐れがある。
特に、春から秋にかけて大気温度が３０℃前後の環境は黴菌の繁殖に適しているため、停止時間が長い場合に黴菌の繁殖を抑えるためには頻繁な水の交換と、さらに装置及び配管の洗浄を行う必用がある。 In the above-described prior art, when condensed water is always supplied from the compressed air while the compressor is operating, high pressure and high temperature are generated in the compressor, so that the growth of bacillus is suppressed. However, if the compressor is stopped for a long time, the water in the separator and the piping approaches the atmospheric temperature, and there is a risk that the bacilli in the air propagate in the water remaining in the separator and the piping.
In particular, the environment where the atmospheric temperature is around 30 ° C from spring to autumn is suitable for the growth of Aspergillus. Therefore, in order to suppress the growth of Aspergillus oryzae when the stop time is long, frequent water exchange and further the equipment and piping It is necessary to perform cleaning.

本発明の目的は、圧縮機が長時間停止しても、次に稼動するまでの間に水交換などの手間をかけずにセパレータ及び圧縮機並びに配管内で黴菌が繁殖するのを防止することにある。   The object of the present invention is to prevent the bacterium from growing in the separator, the compressor and the piping without taking the trouble of water exchange until the next operation even if the compressor is stopped for a long time. It is in.

上記の目的を達成するため、本発明は、セパレータ内の水を圧縮機内部に噴射し、圧縮空気と共に前記セパレータ内に吐出し、分離する水噴射圧縮機において、前記セパレータに保有された水を水供給配管と空冷水クーラとを介して圧縮機に噴射する水噴射配管と、圧縮空気と前記圧縮機に噴射した水とを前記セパレータに吐出する吐出配管と、前記セパレータから水を分離した圧縮空気を吐出する吐出空気配管と、を備え、前記圧縮機の停止後、予め設定した時間経過しても前記圧縮機が起動されない場合、前記圧縮機を所定時間稼動させるものである。   In order to achieve the above object, the present invention is directed to a water injection compressor that injects water in a separator into a compressor, discharges the water in the separator together with compressed air, and separates the water retained in the separator. A water injection pipe that injects into the compressor through a water supply pipe and an air-cooled water cooler, a discharge pipe that discharges compressed air and water injected into the compressor to the separator, and a compression that separates the water from the separator And a discharge air pipe for discharging air. When the compressor is not started even after a preset time has elapsed after the compressor is stopped, the compressor is operated for a predetermined time.

本発明によれば、予め設定した時間経過しても圧縮機が起動されない場合、圧縮機を所定時間稼動させるので、圧縮機並びに配管内で黴菌が繁殖するのを防止することができる。   According to the present invention, when the compressor is not started even after a preset time has elapsed, the compressor is operated for a predetermined time, so that the koji mold can be prevented from breeding in the compressor and the pipe.

図１は一実施の形態のシステム構成を示し、水噴射圧縮機１は容積形圧縮機であり、スクリュー圧縮機を例に説明する。
セパレータ３の水はセパレータの内圧により水供給配管２０から供給され、空冷水クーラ４で冷却された後、水供給配管２２から圧縮機のロータ作動室へ供給される。軸受に水潤滑軸受を採用した場合、停止状態からの起動時にはセパレータ内に圧力がないため、水供給配管２０と空冷水クーラ４との間に設けたポンプ２９で昇圧して圧縮機１の軸受へ水を供給する。
圧縮機１は吸入フィルタを備えた吸入口１４から吸入した空気を圧縮し、圧縮過程で噴射された水と一緒に吐出口から吐出配管１５を通ってセパレータ３へ吐出する。セパレータ３では圧縮空気と水とが分離され、水はセパレータ３の下部に貯留された後、再び水供給配管２０から圧縮機１へ供給される。
圧縮空気は、セパレータ３で分離された後、上部の吐出空気配管１６を通ってアフタークーラ５で冷却された後、ドレンセパレータ１９で凝縮したドレンを除去して場内ライン１８へ吐出される。 FIG. 1 shows a system configuration of an embodiment, and a water jet compressor 1 is a positive displacement compressor, and a screw compressor will be described as an example.
The water in the separator 3 is supplied from the water supply pipe 20 by the internal pressure of the separator, cooled by the air-cooled water cooler 4, and then supplied from the water supply pipe 22 to the rotor working chamber of the compressor. When a water-lubricated bearing is adopted as the bearing, since there is no pressure in the separator when starting from a stopped state, the pressure is increased by a pump 29 provided between the water supply pipe 20 and the air-cooled water cooler 4. To supply water.
The compressor 1 compresses the air sucked from the suction port 14 provided with a suction filter, and discharges it to the separator 3 from the discharge port through the discharge pipe 15 together with water jetted in the compression process. In the separator 3, compressed air and water are separated, and the water is stored in the lower part of the separator 3 and then supplied again from the water supply pipe 20 to the compressor 1.
After the compressed air is separated by the separator 3, the compressed air is cooled by the aftercooler 5 through the upper discharge air pipe 16, the drain condensed by the drain separator 19 is removed, and the compressed air is discharged to the in-situ line 18.

水噴射圧縮機１が夜，休日など比較的長く停止する場合、図２に示すように停止時間が予め設定した停止時間ｔoff２３ を過ぎると水質管理のために自動で水噴射圧縮機１を稼動し、設定時間ｔon２４だけ運転する。その後、水噴射圧縮機が再起動されるまで休止と稼動を繰り返す。圧縮機の稼動，停止について図１により更に説明する。
水噴射圧縮機１には全体のユニットを運転制御する制御盤９を備えており、水噴射圧縮機の駆動モータ２，冷却ファン用モータ６およびポンプ２９のモータを駆動させる。また、始動時の昇圧用ポンプ２９のバイパス配管用電磁弁４５，空冷水クーラ４を通して給水用の水を冷却する配管と、冷却をさせず水温を高温に保持するための配管とを切替る三方電磁弁２１を駆動させる。
また、吸入口１４に設けた大気温度（吸入温度）検出用センサ１３，セパレータの水温度を検出する水温度検出用センサ１１，吐出空気温度を検出する吐出温度検出用センサ
１２により、各部温度を検出する。更に、タイマー１０により圧縮機の稼動時間，停止時間を検出している。制御盤９には図３に示すように検出した大気（吸入）温度に応じて稼動時間と、停止時間を設定したデータを記憶した記憶装置を有する。 When the water injection compressor 1 is stopped for a relatively long time such as at night or on holidays, the water injection compressor 1 is automatically operated for water quality management when a stop time toff23 set in advance is passed as shown in FIG. The operation is performed for the set time ton24. Thereafter, the stoppage and operation are repeated until the water injection compressor is restarted. The operation and stop of the compressor will be further described with reference to FIG.
The water injection compressor 1 is provided with a control panel 9 for controlling the operation of the entire unit, and drives the water injection compressor drive motor 2, the cooling fan motor 6 and the pump 29 motor. Also, three-way switching between a bypass piping solenoid valve 45 of the booster pump 29 at the time of start-up, a piping for cooling water for supplying water through the air-cooled water cooler 4, and a piping for maintaining the water temperature at a high temperature without cooling. The electromagnetic valve 21 is driven.
Further, the temperature of each part is adjusted by an atmospheric temperature (intake temperature) detection sensor 13 provided at the suction port 14, a water temperature detection sensor 11 for detecting the water temperature of the separator, and a discharge temperature detection sensor 12 for detecting the discharge air temperature. To detect. Further, the operation time and stop time of the compressor are detected by the timer 10. As shown in FIG. 3, the control panel 9 has a storage device that stores data in which an operation time and a stop time are set according to the detected atmospheric (intake) temperature.

次に図４より水噴射圧縮機の動作手順を説明する。
日常は通常の運転を行うために圧縮機が起動３１される。そして、１日の稼動時間が終了した場合、圧縮機が停止３２される。その後、圧縮機はタイマーにより停止時間ｔｏを検出３３した後、記憶される。さらに大気（吸入）温度Ｔａ，セパレータの水温Ｔｗを検出３４し、同様に記憶する。そこで、検出した大気温度Ｔａ、または水温Ｔｗをもとに記憶装置内のデータから大気温度Ｔａに対する、または水温Ｔｗに対する圧縮機の休止時間ｔoff 、と稼動時間ｔonとを設定３５する。以後はタイマーで経過時間ｔ１を検出３６し、休止時間を算出３７して休止時間が設定時間を超えた３８場合、水噴射圧縮機を稼動
３９する。 Next, the operation procedure of the water jet compressor will be described with reference to FIG.
On a daily basis, the compressor is started 31 for normal operation. When the operation time of the day is over, the compressor is stopped 32. Thereafter, the compressor detects the stop time to by a timer 33 and stores it. Further, the atmospheric (intake) temperature Ta and the water temperature Tw of the separator are detected 34 and stored in the same manner. Therefore, based on the detected atmospheric temperature Ta or water temperature Tw, the compressor downtime toff and operating time ton for the atmospheric temperature Ta or the water temperature Tw are set 35 from the data in the storage device. Thereafter, the elapsed time t1 is detected 36 by a timer, and a pause time is calculated 37. If the pause time exceeds the set time 38, the water injection compressor is operated 39.

休止時間が設定時間を超えていない場合は大気（吸入）温度，水温の検出３４以降のループを繰り返す。圧縮機が稼動した時は、稼動した時間ｔ２を検出４０し記憶する。次に経過時間ｔ３を検出４１し、運転時間を算出４７する。そこで、運転時間を設定した運転時間ｔonと比較４２し、運転時間が設定時間ｔonを超えた場合は圧縮機を停止４３する。 以後、圧縮機に通常の起動スイッチが押されたかどうかを判別４４した後、通常の起動スイッチが押された場合は通常の連続運転３１を行う。もし、通常の起動スイッチが押されていない場合は、水質管理のための稼動，停止を繰り返す。   When the pause time does not exceed the set time, the loop after the detection 34 of the air (intake) temperature and the water temperature is repeated. When the compressor is operating, the operating time t2 is detected 40 and stored. Next, the elapsed time t3 is detected 41, and the operation time is calculated 47. Therefore, the operation time is compared 42 with the set operation time ton, and when the operation time exceeds the set time ton, the compressor is stopped 43. Thereafter, after determining 44 whether or not the normal start switch has been pressed on the compressor, if the normal start switch is pressed, the normal continuous operation 31 is performed. If the normal start switch is not pressed, the operation for water quality management is repeated.

また、圧縮機が停止された後、水質管理のための圧縮機を稼動する際、水の殺菌効果を増すために吐出空気温度を通常の運転より上げて運転することが良い。すなわち、給水するための水を通常は図１に示す空冷水クーラ４で冷却して給水しているが、例えば三方電磁弁２１を切り替えて、水クーラを通さず、直接水噴射圧縮機へ給水する。このことで、水の温度も上昇し高温となるため、水の殺菌効果は増大する。さらに、吐出空気温度（吐出における水温も近い温度となる。）を８５℃以上として、この温度での稼動時間を１５分以上とすると、水の殺菌効果が確実となる。
なお、吐出空気温度が設定温度に達した後は過度に高温とならないように、三方電磁弁２１を作動させて、水クーラの通過とバイパスとを制御して吐出空気温度（水温度）を設定温度に調節するか、空冷水クーラ４の冷却ファン７のモータ６の回転数を制御して風量を変化させることで水の冷却を調節することが望ましい。 In addition, when the compressor for water quality management is operated after the compressor is stopped, the discharge air temperature is preferably raised from the normal operation in order to increase the sterilizing effect of water. That is, the water to be supplied is usually cooled and supplied by the air-cooled water cooler 4 shown in FIG. 1. However, for example, the three-way solenoid valve 21 is switched to supply water directly to the water injection compressor without passing through the water cooler. To do. As a result, the temperature of the water also rises to a high temperature, so that the water sterilization effect increases. Furthermore, when the discharge air temperature (the temperature of the water at the time of discharge is close) is 85 ° C. or more and the operation time at this temperature is 15 minutes or more, the sterilization effect of water is ensured.
In addition, the discharge air temperature (water temperature) is set by operating the three-way solenoid valve 21 and controlling the passage and bypass of the water cooler so that the discharge air temperature does not become excessively high after the discharge air temperature reaches the set temperature. It is desirable to adjust the cooling of water by adjusting the temperature or by controlling the rotation speed of the motor 6 of the cooling fan 7 of the air-cooled water cooler 4 to change the air volume.

図６は、水の冷却を水冷水クーラ２７で行ったものであり、セパレータ３の水はセパレータの内圧により水供給配管２０から供給され、水冷水クーラ２７で冷却された後、水供給配管２２を通って圧縮機１のロータ作動室へ供給される。
軸受に水潤滑軸受を採用した場合、停止状態からの起動時にはセパレータ内に圧力がないため、水供給配管２０と水冷水クーラ２７との間に設けたポンプ２９で昇圧して圧縮機の軸受へ水を供給する。圧縮機１は吸入フィルタを備えた吸入口１４から吸入した空気を圧縮し、圧縮過程で噴射された水と一緒に吐出口から吐出配管１５を通ってセパレータ３へ吐出する。セパレータ３では圧縮空気と水とが分離され、水はセパレータ３の下部に貯留された後、再び水供給配管２０から圧縮機へ供給される。 FIG. 6 shows the cooling of water by the water-cooled water cooler 27, and the water in the separator 3 is supplied from the water supply pipe 20 by the internal pressure of the separator, cooled by the water-cooled water cooler 27, and then the water supply pipe 22. And is supplied to the rotor working chamber of the compressor 1.
When a water-lubricated bearing is adopted as the bearing, since there is no pressure in the separator when starting from a stopped state, the pressure is increased by a pump 29 provided between the water supply pipe 20 and the water-cooled water cooler 27 to the bearing of the compressor. Supply water. The compressor 1 compresses the air sucked from the suction port 14 provided with a suction filter, and discharges it to the separator 3 from the discharge port through the discharge pipe 15 together with water jetted in the compression process. The separator 3 separates compressed air and water, and the water is stored in the lower part of the separator 3 and then supplied again from the water supply pipe 20 to the compressor.

圧縮空気は、セパレータ３で分離された後、上部の吐出配管（２）１６を通ってアフタークーラ２８で冷却された後、ドレンセパレータ１９で凝縮したドレンを除去した後、場内ライン１８へ吐出される。
水噴射圧縮機１が夜または休日など比較的長く停止する場合、図２に示すように停止時間が予め設定した停止時間ｔoff２３ を過ぎると水質管理のために自動で水噴射圧縮機１を稼動し設定時間ｔon２４だけ運転する。その後、水噴射圧縮機が再起動されるまで休止と稼動を繰り返す。 The compressed air is separated by the separator 3, passed through the upper discharge pipe (2) 16, cooled by the aftercooler 28, removed the condensed water by the drain separator 19, and then discharged to the in-situ line 18. The
When the water injection compressor 1 is stopped for a relatively long time such as at night or on holidays, the water injection compressor 1 is automatically operated for water quality management when the stop time has passed a preset stop time toff23 as shown in FIG. The vehicle is operated for the set time ton24. Thereafter, the stoppage and operation are repeated until the water injection compressor is restarted.

圧縮機の稼動，停止について図６により更に説明する。水噴射圧縮機には全体のユニットを運転制御する制御盤９を備えており、水噴射圧縮機の駆動モータ２およびポンプ２９のモータを駆動させる。また、始動時の昇圧用ポンプ２９のバイパス配管用電磁弁４５，給水用の水を水冷水クーラ２７を通して冷却する配管と、冷却をさせず直接圧縮機１へ供給する水供給配管２２へ切替る三方電磁弁２１とを駆動させる。
また、吸入口１４に設けた大気（吸入）温度検出用センサ１３，セパレータの水温度検出用センサ１１，吐出温度検出用センサ１２により各部温度を検出する。更に、タイマー１０により圧縮機の稼動時間，停止時間を検出している。 The operation and stop of the compressor will be further described with reference to FIG. The water injection compressor is provided with a control panel 9 that controls the operation of the entire unit, and drives the drive motor 2 of the water injection compressor and the motor of the pump 29. Further, the solenoid valve 45 for the bypass pipe of the booster pump 29 at the time of start-up, the pipe for cooling the water for supplying water through the water-cooled water cooler 27, and the water supply pipe 22 for directly supplying the compressor 1 without cooling are switched. The three-way solenoid valve 21 is driven.
Further, the temperature of each part is detected by an air (intake) temperature detection sensor 13, a separator water temperature detection sensor 11, and a discharge temperature detection sensor 12 provided at the suction port 14. Further, the operation time and stop time of the compressor are detected by the timer 10.

さらに、制御盤９には図３に示すように検出した吸入温度に応じて稼動時間と、停止時間を設定したデータを記憶した記憶装置を有する。次に図４より水噴射圧縮機の動作手順を説明する。
日常は通常の運転を行うために圧縮機が起動３１される。次に１日の稼動時間が終了してラインが停止する場合、圧縮機が停止３２される。その後、圧縮機はタイマーにより停止時間ｔｏを記憶３３し、さらに大気温度（吸入空気温度）Ｔａ，セパレータの水温Ｔｗを検出し、記憶する。そこで、検出した大気温度Ｔａ、または水温をもとに記憶装置内のデータから大気温度Ｔａに対するまたは水温Ｔｗに対する圧縮機の休止時間ｔoff 、と稼動時間ｔonとを設定する。以後はタイマーで経過時間を検出し、休止時間が設定時間を超えた場合、水噴射圧縮機１を稼動する。 Further, the control panel 9 has a storage device that stores data in which the operation time and the stop time are set according to the detected suction temperature as shown in FIG. Next, the operation procedure of the water jet compressor will be described with reference to FIG.
On a daily basis, the compressor is started 31 for normal operation. The compressor is then stopped 32 when the day's operating time ends and the line stops. Thereafter, the compressor stores the stop time to by a timer 33, and further detects and stores the atmospheric temperature (intake air temperature) Ta and the water temperature Tw of the separator. Therefore, based on the detected atmospheric temperature Ta or the water temperature, the compressor downtime toff and the operation time ton for the atmospheric temperature Ta or the water temperature Tw are set from the data in the storage device. Thereafter, the elapsed time is detected by a timer, and when the pause time exceeds the set time, the water jet compressor 1 is operated.

さらに、稼動時の時間を検出しておき、以後経過時間を定期的に検出し、稼動時間が設定時間ｔonを越えたら、圧縮機を停止させる。そのとき、圧縮機に通常の起動スイッチが押されたかどうかを判別した後、通常の起動スイッチが押された場合は通常の連続運転
３１を行う。もし、通常の起動スイッチが押されていない場合は、水質管理のための稼動，停止を繰り返す。なお、吐出空気温度の調節は、水冷水クーラ２７の冷却水量を電磁弁４６で調整して制御する。 Further, the operating time is detected, the elapsed time is detected periodically thereafter, and when the operating time exceeds the set time ton, the compressor is stopped. At that time, after determining whether or not the normal start switch has been pressed on the compressor, if the normal start switch is pressed, the normal continuous operation 31 is performed. If the normal start switch is not pressed, the operation for water quality management is repeated. The discharge air temperature is adjusted by adjusting the amount of cooling water in the water-cooled water cooler 27 with the electromagnetic valve 46.

圧縮機は吐出温度が高温となっても支障ないようにケーシング，ロータ，軸受及び軸封装置は設定吐出温度で使用可能な耐熱性を有する。また、ロータ間，ロータ・ケーシング間および軸受の内外輪間のクリアランスは設定した吐出温度で稼動する際、損傷を起こさない値を確保する。また、配管及びセパレータ，パッキン類，電磁弁や温度検出センサも設定した吐出温度で稼動させても支障ないように耐熱性を確保する。   The casing, rotor, bearing, and shaft seal device have heat resistance that can be used at the set discharge temperature so that the compressor will not be disturbed even if the discharge temperature becomes high. In addition, the clearance between the rotor, between the rotor casing and the inner and outer rings of the bearing ensures values that do not cause damage when operating at the set discharge temperature. In addition, heat resistance is secured so that piping, separators, packings, solenoid valves, and temperature detection sensors can be operated at a set discharge temperature.

以上、水噴射圧縮機の停止後、予め設定した時間すなわち、黴菌の繁殖が活発になり始める時間を経過しても圧縮機が起動されない場合には周期的に圧縮機を稼動し、停止させるので、セパレータ，水配管，圧縮機内に水が長時間滞留することがなく、さらに水温が高くなるのでセパレータ内の水または装置内で黴菌が繁殖するのを防止できる。   As described above, after the water injection compressor is stopped, if the compressor is not started even after the preset time, that is, the time when the propagation of the koji mold starts to be active, the compressor is periodically operated and stopped. Since the water does not stay in the separator, the water pipe, and the compressor for a long time and the water temperature becomes higher, it is possible to prevent the koji mold from propagating in the water in the separator or in the apparatus.

また、大気温度またはセパレータの水温を検出し、大気温度または水温に応じて、水噴射圧縮機を稼動する時間及び間隔を設定するので、夏の黴菌が繁殖しやすい時期においても、確実に黴菌の繁殖を防止できる。   In addition, the air temperature or separator water temperature is detected, and the time and interval for operating the water jet compressor are set according to the air temperature or water temperature. Breeding can be prevented.

さらに、冬など大気温度が低く、黴菌の繁殖が活発でない時期には水噴射圧縮機を稼動する間隔を伸ばすことで、水質管理に要する圧縮機の駆動エネルギーを節約できる。
さらに、水噴射圧縮機の水質管理を目的として稼動させる際、圧縮機の吐出空気温度を通常の稼動時の設定温度よりも高くすることで、水温も吐出温度に近くなるため、更に水の殺菌効果を増すことができる。なお、水質管理のために水噴射圧縮機を稼動させる際の吐出空気温度を８５℃以上として１５分以上稼動することで水の殺菌効果を確実にすることができる。 Furthermore, when the atmospheric temperature is low, such as in winter, when the gonococcal breeding is not active, the driving energy of the compressor required for water quality management can be saved by extending the interval at which the water jet compressor is operated.
Furthermore, when operating the water jet compressor for the purpose of water quality management, the water temperature also approaches the discharge temperature by making the discharge air temperature of the compressor higher than the set temperature during normal operation. The effect can be increased. In addition, the sterilization effect of water can be ensured by operating the discharge air temperature at the time of operating a water-injection compressor for water quality management at 85 degreeC or more for 15 minutes or more.

さらに、水噴射圧縮機の圧縮機，セパレータ，配管を高温の設定吐出空気温度で運転可能な耐熱構造とし、またクリアランスを適正に設定することで、軸受，ロータ，ケーシングなどの主要部品が熱膨張または変質を起こし、変形，接触などの損傷ならびに、圧縮性能低下，漏洩などの機能低下の発生を防止できる。   In addition, the heat-injection compressor, separator, and piping have a heat-resistant structure that can be operated at a high set discharge air temperature, and by setting the clearance appropriately, the main components such as bearings, rotors, and casings are thermally expanded. Or, it can be altered to prevent damage such as deformation and contact, and deterioration of compression performance and function such as leakage.

本発明による一実施の形態を示すブロック図。The block diagram which shows one embodiment by this invention. 一実施の形態の停止及び稼動時間と吐出空気温度の関係を示すグラフ。The graph which shows the relationship between the stop of one Embodiment, an operation time, and discharge air temperature. 一実施の形態の大気温度と停止及び稼動時間の関係を示す図。The figure which shows the relationship between the atmospheric temperature of one embodiment, a stop, and operation time. 一実施の形態の運転動作を示すフローチャート。The flowchart which shows the driving | operation operation | movement of one Embodiment. 停止及び稼動時間と吐出空気温度の関係を示すグラフ。The graph which shows the relationship between stop and operation time, and discharge air temperature. 他の実施の形態によるシステム構成を示すブロック図。The block diagram which shows the system configuration | structure by other embodiment.

符号の説明Explanation of symbols

１ 圧縮機
２ 圧縮機駆動モータ
３ セパレータ
４ 空冷水クーラ
７ 冷却ファン
９ 制御盤
１１ 水温度検出用センサ
１２ 吐出温度検出用センサ
１３ 大気温度検出用センサ
１５ 吐出配管
２０，２２ 水供給配管
２１ 三方電磁弁
４６ 電磁弁 DESCRIPTION OF SYMBOLS 1 Compressor 2 Compressor drive motor 3 Separator 4 Air-cooled water cooler 7 Cooling fan 9 Control panel 11 Water temperature detection sensor 12 Discharge temperature detection sensor 13 Air temperature detection sensor 15 Discharge piping 20 and 22 Water supply piping 21 Three-way electromagnetic Valve 46 Solenoid valve

Claims (6)

セパレータ内の水を圧縮機内部に噴射し、圧縮空気と共に前記セパレータ内に吐出し、分離する水噴射圧縮機において、
前記セパレータに保有された水を水供給配管と空冷水クーラとを介して圧縮機に噴射する水噴射配管と、
圧縮空気と前記圧縮機に噴射した水とを前記セパレータに吐出する吐出配管と、
前記セパレータから水を分離した圧縮空気を吐出する吐出空気配管と、
を備え、前記圧縮機の停止後、予め設定した時間経過しても前記圧縮機が起動されない場合、前記圧縮機を所定時間稼動させることを特徴とする水噴射圧縮機。 In the water-injection compressor that injects water in the separator into the compressor, discharges it into the separator together with compressed air, and
A water injection pipe for injecting water held in the separator to the compressor via a water supply pipe and an air-cooled water cooler;
A discharge pipe for discharging compressed air and water sprayed to the compressor to the separator;
A discharge air pipe for discharging compressed air from which water is separated from the separator;
The water-injection compressor is characterized in that, after the compressor is stopped, the compressor is operated for a predetermined time when the compressor is not started even after a preset time has elapsed. 請求項１に記載のものにおいて、大気温度に関連して前記予め設定した時間及び所定時間を定めることを特徴とする水噴射圧縮機。   The water injection compressor according to claim 1, wherein the predetermined time and the predetermined time are determined in relation to the atmospheric temperature. 請求項１に記載のものにおいて、前記セパレータ内の水温度を検出するセンサを設け、前記水温度に関連して前記予め設定した時間及び所定時間を定めることを特徴とする水噴射圧縮機。   The water injection compressor according to claim 1, wherein a sensor for detecting a water temperature in the separator is provided, and the preset time and the predetermined time are determined in relation to the water temperature. 請求項１に記載のものにおいて、前記圧縮機を所定時間稼動させる際は、前記空冷水クーラの冷却量を減少させることを特徴とする水噴射圧縮機。   2. The water injection compressor according to claim 1, wherein when the compressor is operated for a predetermined time, the cooling amount of the air-cooled water cooler is decreased. 請求項１に記載のものにおいて、前記圧縮機を所定時間稼動させる際は、吐出空気温度を８５℃以上として１５分以上稼動することを特徴とする水噴射圧縮機。   2. The water injection compressor according to claim 1, wherein when the compressor is operated for a predetermined time, the discharge air temperature is 85 ° C. or more and the compressor is operated for 15 minutes or more. 請求項１に記載のものにおいて、前記空冷水クーラに代えて水冷水クーラを用い、該水冷水クーラへの水量を制御することを特徴とする水噴射圧縮機。
The water injection compressor according to claim 1, wherein a water-cooled water cooler is used instead of the air-cooled water cooler, and the amount of water to the water-cooled water cooler is controlled.
JP2006280869A 2006-10-16 2006-10-16 Water jet compressor Active JP4774351B2 (en)

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CN2007101424063A CN101165347B (en) 2006-10-16 2007-08-22 Water-injected compressor
BE2007/0402A BE1018906A3 (en) 2006-10-16 2007-08-23 COMPRESSOR WITH WATER INJECTION.
US11/844,053 US8459957B2 (en) 2006-10-16 2007-08-23 Water-injected compressor

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US6174148B1 (en) * 1998-07-23 2001-01-16 Ishikawajima-Harima Heavy Industries Co., Ltd. Water jet type air compressor system, its starting method, and water quality control method thereof
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