JPS6319599Y2 - - Google Patents
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- Publication number
- JPS6319599Y2 JPS6319599Y2 JP1978149857U JP14985778U JPS6319599Y2 JP S6319599 Y2 JPS6319599 Y2 JP S6319599Y2 JP 1978149857 U JP1978149857 U JP 1978149857U JP 14985778 U JP14985778 U JP 14985778U JP S6319599 Y2 JPS6319599 Y2 JP S6319599Y2
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- JP
- Japan
- Prior art keywords
- pipe
- valve
- control valve
- compressor
- air
- 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
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Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、圧縮機で圧縮された空気で圧縮機の
送風側の空気駆動式放風制御弁と空気駆動式吸入
制御弁を開閉するための圧縮機の起動装置に係
り、特い空気駆動式放風制御弁と吸入制御弁を他
の空気源を用いずに駆動するための圧縮機の起動
装置に関するものである。[Detailed description of the invention] [Industrial application field] This invention uses air compressed by a compressor to open and close an air-driven blow-off control valve and an air-driven suction control valve on the blowing side of the compressor. The present invention relates to a compressor starting device, and more particularly to a compressor starting device for driving an air-driven blow-off control valve and a suction control valve without using any other air source.
各種の負荷装置に圧縮空気を供給する圧縮機
は、その負荷装置の圧力や流量の変化に対してそ
のサージングを防止すべく、その送風側に放風制
御弁、吸入側に吸入制御弁が接続されている。
Compressors that supply compressed air to various load devices are connected to a discharge control valve on the blowing side and a suction control valve on the suction side to prevent surging due to changes in the pressure or flow rate of the load devices. has been done.
これを第１図により説明する。This will be explained with reference to FIG.
第１図は従来より広く採用されている圧縮機の
負荷装置の一例を示す結線図である。 FIG. 1 is a wiring diagram showing an example of a load device for a compressor that has been widely used in the past.
第１図に示す如く、圧縮機１の吸気側の吸入管
２には空気駆動式吸入制御弁３が設置され、吸入
フイルタ４から圧縮機１に入る空気量を調節す
る。圧縮機１の送風側は負荷装置に接続される負
荷送風管５、放風側圧力を開放するための放風管
６及び弁制御管７の３つに分れている。放風管６
には空気駆動式放風制御弁８が設置される。弁制
御管７には三方向電磁弁９が設置され、この三方
向電磁弁９の先は吸入制御弁３と放風制御弁８の
各々の制御ポートに連結される。三方向電磁弁９
と圧縮機１の間の弁制御管７には起動用空気源１
０が接続される。 As shown in FIG. 1, an air-driven suction control valve 3 is installed in the suction pipe 2 on the suction side of the compressor 1, and controls the amount of air entering the compressor 1 from the suction filter 4. The blowing side of the compressor 1 is divided into three parts: a load blowing pipe 5 connected to a load device, a blowing pipe 6 for releasing pressure on the blowing side, and a valve control pipe 7. Air discharge pipe 6
An air-driven blow-off control valve 8 is installed. A three-way solenoid valve 9 is installed in the valve control pipe 7, and the end of the three-way solenoid valve 9 is connected to each control port of the suction control valve 3 and the air discharge control valve 8. Three-way solenoid valve 9
A starting air source 1 is connected to the valve control pipe 7 between the compressor 1 and the
0 is connected.
この圧縮機の負荷装置においては、吸入制御弁
３は閉じる方向に付勢され、その制御ポートに空
気圧がかかつたとき、その圧力に応じて弁３が開
放され、また、放風制御弁８は、常時開く方向に
付勢され、その制御ポートに空気圧力がかかつた
ときに弁８を閉とする。 In this compressor load device, the suction control valve 3 is biased in the closing direction, and when air pressure is applied to the control port, the valve 3 is opened according to the pressure, and the air discharge control valve 8 is always biased in the open direction, and closes the valve 8 when air pressure is applied to its control port.
通常、定常運転に入つた時、圧縮機１からの圧
気は弁制御管７から三方向電磁弁９を介して両弁
３，８の制御ポートに入力され、その圧縮機１の
吐出圧力P1に対応した圧力で吸入制御弁３が開
かれると共に放風制御弁８が閉じられる。 Normally, when steady operation starts, the pressure from the compressor 1 is input from the valve control pipe 7 to the control ports of both valves 3 and 8 via the three-way solenoid valve 9, and the discharge pressure of the compressor 1 is P 1 The suction control valve 3 is opened and the air discharge control valve 8 is closed at a pressure corresponding to the pressure.
また負荷送風管５での負荷変動により圧縮機１
がサージング圧に近づいた場合には、三方向電磁
弁９を大気開放し、その空気圧を下げることで放
風制御弁８を開放して圧力を下げると共に吸入制
御弁３を閉じ、サージングを防止する。 Also, due to load fluctuations in the load air pipe 5, the compressor 1
When the pressure approaches the surging pressure, the three-way solenoid valve 9 is opened to the atmosphere, the air pressure is lowered, the air discharge control valve 8 is opened to lower the pressure, and the suction control valve 3 is closed to prevent surging. .
しかしながら、上述のように吸入制御弁３は、
その制御ポートに制御空気圧力が入力されない限
り閉状態であり、圧縮機１を駆動しても吸入制御
弁３が閉のため、制御用圧縮空気は得られない。
このため、弁制御管７に起動用空気源１０から制
御用空気を供給し、吸入制御弁３を開放するよう
にしている。
However, as mentioned above, the suction control valve 3
It is in a closed state unless control air pressure is input to the control port, and even if the compressor 1 is driven, the suction control valve 3 is closed, so no control compressed air can be obtained.
For this reason, control air is supplied from the starting air source 10 to the valve control pipe 7 to open the intake control valve 3.
すなわち、三方向電磁弁９を励磁して開くと共
に、起動用空気源１０から圧縮空気を弁制御管
７、三方向電磁弁９を介して吸入制御弁３と放風
制御弁８へ送つて、吸入制御弁３を開くと同時に
放風制御弁８を閉じて圧縮機１を起動る。その
後、圧縮機１の放風側の圧力P1が所定圧に達す
ると、起動用空気源１０からの圧縮空気に代つて
圧縮機１の圧力P1で吸入制御弁３を開き、放風
制御弁８を閉の状態に維持する。この結果、圧縮
機１から負荷送風管５に圧縮空気が定常的に出る
ことになり、圧縮機１から負荷に応じた圧縮空気
が供給されることとなる。 That is, the three-way solenoid valve 9 is energized and opened, and compressed air is sent from the starting air source 10 to the suction control valve 3 and the air discharge control valve 8 via the valve control pipe 7 and the three-way solenoid valve 9. At the same time as the suction control valve 3 is opened, the air discharge control valve 8 is closed to start the compressor 1. After that, when the pressure P 1 on the air discharge side of the compressor 1 reaches a predetermined pressure, the suction control valve 3 is opened with the pressure P 1 of the compressor 1 instead of the compressed air from the starting air source 10, and the air discharge is controlled. Valve 8 is kept closed. As a result, compressed air will constantly come out from the compressor 1 to the load blast pipe 5, and compressed air will be supplied from the compressor 1 according to the load.
このように、従来の圧縮機の負荷装置において
は、圧縮機１を起動するには、別途起動用空気源
１０が不可欠であるという問題がある。つまり、
空気源を持たない工場等に回転式圧縮機を設置す
る場合には、必ず起動用の空気源１０を設備しな
ければならなかつた。この空気源１０は圧縮機１
を一旦起動した後には不用となり、稼働率が低い
ことから、場所をとるとともにコストアツプにな
る等の原因の１つであつた。 As described above, in the conventional compressor load device, there is a problem in that a separate starting air source 10 is indispensable in order to start the compressor 1. In other words,
When installing a rotary compressor in a factory or the like that does not have an air source, an air source 10 for starting must be installed. This air source 10 is a compressor 1
Once started, it becomes unnecessary and has a low operating rate, which is one of the reasons why it takes up space and increases costs.
本考案は以上の如き問題点に鑑み、これを有効
的に解決すべくなされたものである。 The present invention has been devised in view of the above-mentioned problems and to effectively solve them.
本考案の目的は、圧縮機に空気駆動式の吸入制
御弁と放風制御弁を接続するものにおいて、その
圧縮機の起動時、他の空気源を用いなくとも吸入
制御弁と放風制御弁を開閉駆動できる圧縮機の起
動装置を提供するにある。 The purpose of this invention is to connect an air-driven suction control valve and a blowout control valve to a compressor, so that when the compressor is started up, the suction control valve and blowout control valve can be operated without using any other air source. An object of the present invention is to provide a starting device for a compressor that can open and close a compressor.
本考案は、上記の目的を達成するために、圧縮
機の吸気側の吸入管に空気駆動式吸入制御弁を接
続し、その圧縮機の送風側の負荷送風管より分岐
して放風管と弁制御管を接続し、その放風管に空
気駆動式放風制御弁を接続し、また弁制御管を上
記吸入制御弁と放風制御弁の制御ポートに接続す
ると共に吸入制御弁を、その弁制御管からの圧気
で閉から開に、また放風制御弁を弁制御管からの
圧気で開から閉にするようにした圧縮機の起動装
置において、上記吸入管に、上記吸入制御弁をバ
イパスするバイパス吸気管を接続すると共に該バ
イパス吸気管に圧縮機の負荷運転前に開で負荷運
転後閉となる電磁又は油圧駆動式バイパス弁を接
続し、かつそのバイパス弁の開放時、バイパス吸
気管から吸気される吸気容量を、圧縮機で圧縮後
の圧気が上記吸入制御弁及び放風制御弁を駆動す
るに充分な圧力が得られるよう吸入管の吸気容量
に対して1/3〜1/5になるように構成したしたもの
で、吸入制御弁と並列に電磁又は油圧駆動式バイ
パス弁を設け、起動時そのバイパス弁を通して圧
縮機に空気を供給することで吸入制御弁と放風制
御弁を駆動する空気源を確保し、しかもバイパス
吸気管から吸気される吸気容量を吸入管の吸気容
量に対して1/3〜1/5になるようにすることで、吸
入制御弁と放風制御弁を開閉駆動できる充分な圧
力が得られるようにしたものである。これによ
り、起動時別途空気源を用いずに圧縮機を起動で
きるようにしたものである。
In order to achieve the above object, the present invention connects an air-driven suction control valve to the suction pipe on the intake side of the compressor, and branches from the load air pipe on the blowing side of the compressor to connect it to the air discharge pipe. Connect a valve control pipe, connect an air-driven blow-off control valve to the blow-off pipe, connect the valve control pipe to the control ports of the suction control valve and blow-off control valve, and connect the suction control valve to the In the compressor starting device, the suction control valve is connected to the suction pipe, and the air discharge control valve is changed from closed to open by pressure air from the valve control pipe, and from open to closed by the pressure air from the valve control pipe. A bypass intake pipe to be bypassed is connected, and an electromagnetic or hydraulically driven bypass valve is connected to the bypass intake pipe, which is opened before load operation of the compressor and closed after load operation, and when the bypass valve is opened, the bypass intake pipe is connected to the bypass intake pipe. The intake capacity of the intake pipe is set to 1/3 to 1 of the intake capacity of the intake pipe so that the pressure after compression by the compressor is sufficient to drive the intake control valve and air discharge control valve. /5, an electromagnetic or hydraulically driven bypass valve is installed in parallel with the suction control valve, and air is supplied to the compressor through the bypass valve at startup to control the suction control valve and air discharge. By securing an air source to drive the valve and making the intake capacity taken in from the bypass intake pipe 1/3 to 1/5 of the intake capacity of the intake pipe, the intake control valve and air discharge It is designed to provide sufficient pressure to open and close the control valve. This makes it possible to start the compressor without using a separate air source at startup.
以下に本考案の好適一実施例を添付図面によつ
て詳述する。
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
第２図は本考案に係る圧縮機の起動装置の一実
施例を示す結線図である。 FIG. 2 is a wiring diagram showing an embodiment of the compressor starting device according to the present invention.
第２図に示す如く、１は圧縮機であり、この吸
気側には吸入管２が接続される。吸入管２は吸入
フイルタ４に連結されるが、その途中に制御空気
圧に応じて開放される空気駆動式吸入制御弁３が
設置される。この吸入制御弁３を有する吸入管２
には、この吸入制御弁３をバイパスして圧縮機１
に吸気させるバイパス吸気管が並列されて設けら
れている。このバイパス吸気管には、これを開閉
するための電磁駆動式バイパス弁１１が接続され
ている。 As shown in FIG. 2, 1 is a compressor, and a suction pipe 2 is connected to the intake side of the compressor. The suction pipe 2 is connected to a suction filter 4, and an air-driven suction control valve 3, which is opened according to control air pressure, is installed in the middle of the suction pipe 2. Suction pipe 2 having this suction control valve 3
In this case, the suction control valve 3 is bypassed and the compressor 1
Bypass intake pipes are provided in parallel to allow air to be taken in. An electromagnetically driven bypass valve 11 for opening and closing the bypass intake pipe is connected to the bypass intake pipe.
圧縮機１の送風側には負荷送風管５が接続さ
れ、この負荷送風管５と分岐して放風管６及び弁
制御管７が接続される。放風管６には制御空気に
より閉成される空気駆動式放風制御弁８が介設さ
れ、圧縮機１がサージング圧に近付いたとき、そ
の圧気を放出するようになつている。弁制御管７
は途中に三方向電磁弁９が接続され、三方向電磁
弁９の先で二又になり吸入制御弁３と放風制御弁
８の各々の制御ポートに連結される。 A load blower pipe 5 is connected to the blower side of the compressor 1, and a blower pipe 6 and a valve control pipe 7 are connected to the load blower pipe 5 by branching off from the load blower pipe 5. An air-driven blow-off control valve 8 that is closed by control air is interposed in the blow-off pipe 6, so that when the compressor 1 approaches surging pressure, the pressure air is released. Valve control pipe 7
A three-way solenoid valve 9 is connected in the middle of the valve, and the valve becomes bifurcated at the end of the three-way solenoid valve 9 and connected to each control port of the suction control valve 3 and the air discharge control valve 8.
次に本考案の作用について述べる。 Next, the operation of the present invention will be described.
圧縮機１を起動するには、まず、吸入制御弁３
は閉じた状態であり、バイパス弁１１及び三方向
電磁弁９は閉じられ、放風制御弁８は開いた状態
にある。この状態から、バイパス弁１１及び三方
向電磁弁９を励磁して開く。このとき、圧縮機１
の吸気側の圧力P2は、約0.3ata（Kg／cm2abs）とな
り、圧縮機１の送風側の圧力P1は約2ataとなる
ため弁制御管７、三方向電磁弁９を介して吸入制
御弁３及び放風制御弁８の制御ポートに入力され
ると共に、その各制御弁３，８を開閉駆動するに
充分な圧力が得られる。従つて吸入制御弁３は開
放駆動され、放風制御弁８は閉成駆動されること
になり、圧縮機１は負荷状態に見合つた圧気が得
られる。その後、バイパス弁１１の励磁を解き、
その弁１１を閉止する。 To start the compressor 1, first, the suction control valve 3
is in a closed state, the bypass valve 11 and the three-way solenoid valve 9 are closed, and the air discharge control valve 8 is in an open state. From this state, the bypass valve 11 and the three-way solenoid valve 9 are energized and opened. At this time, compressor 1
The pressure P 2 on the intake side of the compressor 1 is approximately 0.3 ata (Kg/cm 2 abs), and the pressure P 1 on the blowing side of the compressor 1 is approximately 2 ata. The pressure is input to the control ports of the suction control valve 3 and the air discharge control valve 8, and sufficient pressure is obtained to open and close each of the control valves 3 and 8. Therefore, the suction control valve 3 is driven to open, and the air discharge control valve 8 is driven to close, so that the compressor 1 can obtain air pressure commensurate with the load state. After that, the bypass valve 11 is de-energized,
The valve 11 is closed.
以上により、別途の空気源を用いずとも圧縮機
１を起動させることができると共に制御弁３，８
を作動し、負荷状態に応じた運転が行える。 As described above, the compressor 1 can be started without using a separate air source, and the control valves 3 and 8 can be started.
can be operated according to the load condition.
また、バイパス吸気管の吸気容量は、吸入制御
弁３の吸気容量に対して1/3〜1/5にすることによ
り、圧縮機１の吸入側圧力P2が0.2〜0.4ataにな
し得、その送風側圧力が上記吸入制御弁３及び放
風制御弁８を開閉駆動するに充分な圧気を生成す
ることができる。すなわち圧縮機１の定格運転時
の吸入側圧力P2＝1.013ata、送風側圧力P1＝
8.033ataのときの流量Q1（＝100％）とすると、圧
力比P1／P2＝7.93となる。そこで今圧力比P1／P2
（＝7.93）が一定とし、送風側圧力でP1＝2ataを
得ようとすると吸入側圧力P2は2ata／7.93＝
0.252ataとなる。この際の流量Q2は、定格運転時
の吸入側圧力が1.013ataであるから0.252／
1.013ataで約1/4となり、従つて、定格時の吸気
容量（流量）Q1に対し、Q2＝Q1×1/4となる。 In addition, by setting the intake capacity of the bypass intake pipe to 1/3 to 1/5 of the intake capacity of the intake control valve 3, the suction side pressure P2 of the compressor 1 can be reduced to 0.2 to 0.4ata. The air blowing side pressure can generate sufficient air pressure to open and close the suction control valve 3 and the air discharge control valve 8. In other words, the suction side pressure P 2 = 1.013ata and the blowing side pressure P 1 = at the rated operation of the compressor 1.
Assuming the flow rate Q 1 (=100%) at 8.033ata, the pressure ratio P 1 /P 2 = 7.93. So now the pressure ratio P 1 /P 2
(=7.93) is constant, and when trying to obtain P 1 = 2ata on the blowing side pressure, the suction side pressure P 2 is 2ata / 7.93 =
It becomes 0.252ata. At this time, the flow rate Q 2 is 0.252/ since the suction side pressure during rated operation is 1.013 ata.
1.013ata is approximately 1/4, and therefore, compared to the rated intake capacity (flow rate) Q 1 , Q 2 = Q 1 × 1/4.
上述の例は定格運転時の送風側圧力P1が約
8ataの場合について例示したが、送風側圧力P1
が約10ataであればバイパス吸気管の吸気容量は
Q2＝Q1×1/5となる。 In the above example, the blowing side pressure P 1 during rated operation is approximately
The case of 8ata is shown as an example, but the blowing side pressure P 1
If is about 10ata, the intake capacity of the bypass intake pipe is
Q 2 =Q 1 ×1/5.
このバイパス吸気管の吸気容量は定格運転時の
圧縮機の送風側圧力が高ければ、Q2＝Q1×1/15
まで可能ではあるが実際には1/5以下ではバイパ
ス吸気管及びバイパス弁１１が絞られるだけで送
風側圧力があまり上がらず効率的に好ましくな
い。また吸気容量が1/3以上では吸気容量が多く
なり、無駄に圧気を放風制御弁８から放出するこ
ととなり好ましくない。 The intake capacity of this bypass intake pipe is Q 2 = Q 1 × 1/15 if the pressure on the blowing side of the compressor during rated operation is high.
Although it is possible to do this up to 1/5 or less, in reality, the bypass intake pipe and the bypass valve 11 are only throttled, and the pressure on the blowing side does not increase much, which is not preferable in terms of efficiency. Moreover, if the intake capacity is 1/3 or more, the intake capacity increases, and pressurized air is discharged from the air discharge control valve 8 unnecessarily, which is not preferable.
従つて、バイパス吸気管の吸気容量は吸入制御
弁３の吸気容量に対して1/3〜1/5が最も良い。 Therefore, the best intake capacity of the bypass intake pipe is 1/3 to 1/5 of the intake capacity of the intake control valve 3.
また、前記実施例における電磁駆動式パイパス
弁１１の代りに、負荷装置の近くで油圧装置があ
る場合には油圧駆動式バイパス弁を用いてもよ
く、その場合にも、起動用の空気源が下要となる
等の効果を生じる。 Further, instead of the electromagnetically driven bypass valve 11 in the above embodiment, a hydraulically driven bypass valve may be used if there is a hydraulic device near the load device, and in that case also, the starting air source is It produces the effect of becoming a base.
尚、圧縮機１がサージング域に近づいたときに
は、その圧力（又は流量）を図示しない検出手段
で検出し、三方向電磁弁９を聞じるよう駆動し、
圧縮機１から弁制御管７に入る圧気を三方向電磁
弁９で大気開放することで放風制御弁８を開き吸
入制御弁３を閉じるようにする。 Incidentally, when the compressor 1 approaches the surging region, the pressure (or flow rate) is detected by a detection means (not shown), and the three-way solenoid valve 9 is driven to detect the surging region.
The pressure air entering the valve control pipe 7 from the compressor 1 is released to the atmosphere by the three-way solenoid valve 9, thereby opening the air discharge control valve 8 and closing the suction control valve 3.
以上の説明で明らかな如く本考案によれば、次
の如き優れた効果を発揮する。
As is clear from the above description, the present invention exhibits the following excellent effects.
(1) 圧縮機から得られる圧気により開閉駆動され
る吸入制御弁を有する圧縮機において、吸入制
御弁に並列に電磁又は油圧式バイパス弁を設け
たので圧縮機の起動時に吸入制御弁が閉じてい
てもそのバイパス弁から吸気して、その吸入制
御弁及び放風制御弁を駆動できる圧気を生成し
得、起動用の空気源がなくても圧縮機を起動
し、負荷状態とすることができる。(1) In a compressor that has a suction control valve that is driven to open and close by the pressure obtained from the compressor, an electromagnetic or hydraulic bypass valve is installed in parallel with the suction control valve, so the suction control valve is closed when the compressor is started. Even if air is taken in through the bypass valve, it can generate pressurized air that can drive the suction control valve and the air discharge control valve, and the compressor can be started and put into a loaded state even without a starting air source. .
(2) 圧縮機の吸気側に吸入制御弁を有する吸入管
に、これをバイパスさせて圧縮機に吸気させる
バイパス吸気管を設けるだけの簡単な構造であ
り、既設の圧縮機に採用し得る。(2) It has a simple structure in which a bypass intake pipe is provided for bypassing the suction control valve on the intake side of the compressor to allow air to be taken into the compressor, and it can be used in existing compressors.
(3) バイパス管からの吸気容量を吸入管の吸気容
量に対して1/3〜1/5にすることで、吸入制御弁
及び放風制御弁に起動するに充分な圧気を得る
ことができる。(3) By setting the intake capacity from the bypass pipe to 1/3 to 1/5 of the intake capacity of the intake pipe, sufficient pressure can be obtained to activate the intake control valve and the air discharge control valve. .
第１図は従来より広く採用されている圧縮機の
起動装置の一例を示す結線図、第２図は本考案に
係る圧縮機の起動装置の一実施例を示す結線図で
ある。
図中、１は圧縮機、２は吸入管、３は空気駆動
式吸入制御弁、８は空気駆動式放風制御弁、７は
弁制御管、１１はバイパス弁である。
FIG. 1 is a wiring diagram showing an example of a compressor starting device that has been widely used in the past, and FIG. 2 is a wiring diagram showing an embodiment of the compressor starting device according to the present invention. In the figure, 1 is a compressor, 2 is a suction pipe, 3 is an air-driven suction control valve, 8 is an air-driven blowout control valve, 7 is a valve control pipe, and 11 is a bypass valve.
Claims (1)
弁を接続し、その圧縮機の送風側の負荷送風管よ
り分岐して放風管と弁制御管を接続し、その放風
管に空気駆動式放風制御弁を接続し、また弁制御
管を上記吸入制御弁と放風制御弁の制御ポートに
接続すると共に吸入制御弁を、その弁制御管から
の圧気で閉から開に、また放風制御弁を弁制御管
からの圧気で開から閉にするようにした圧縮機の
起動装置において、上記吸入管に、上記吸入制御
弁をバイパスするバイパス吸気管を接続すると共
に該バイパス吸気管に、圧縮機の負荷運転前に開
で負荷運転後閉となる電磁又は油圧駆動式バイパ
ス弁を接続し、かつそのバイパス弁の開放時、バ
イパス吸気管から吸気される吸気容量を、圧縮機
で圧縮後の圧気が上記吸入制御弁及び放風制御弁
を駆動するに充分な圧力が得られるよう吸入管の
吸気容量に対して1/3〜1/5になるように構成した
ことを特徴とする圧縮機の起動装置。 An air-driven suction control valve is connected to the suction pipe on the intake side of the compressor, and the air-driven suction control valve is branched from the load air pipe on the blowing side of the compressor to connect the air discharge pipe and the valve control pipe. A driven air discharge control valve is connected, and a valve control pipe is connected to the control ports of the above-mentioned suction control valve and air discharge control valve, and the suction control valve is changed from closed to open by pressure air from the valve control pipe. In a compressor starting device in which a blow-off control valve is opened and closed by pressure air from a valve control pipe, a bypass intake pipe that bypasses the intake control valve is connected to the intake pipe, and the bypass intake pipe is connected to the intake pipe. An electromagnetic or hydraulically driven bypass valve is connected to the compressor, which opens before load operation and closes after load operation, and when the bypass valve is opened, the intake capacity taken from the bypass intake pipe is controlled by the compressor. The compressed air pressure is configured such that the pressure after compression is 1/3 to 1/5 of the intake capacity of the suction pipe so as to obtain sufficient pressure to drive the suction control valve and the air discharge control valve. Compressor starting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978149857U JPS6319599Y2 (en) | 1978-10-31 | 1978-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978149857U JPS6319599Y2 (en) | 1978-10-31 | 1978-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5567377U JPS5567377U (en) | 1980-05-09 |
| JPS6319599Y2 true JPS6319599Y2 (en) | 1988-06-01 |
Family
ID=29133569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978149857U Expired JPS6319599Y2 (en) | 1978-10-31 | 1978-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319599Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015014260A (en) * | 2013-07-05 | 2015-01-22 | 株式会社Ihi | Air discharge control valve opening and closing device for turbo compressor |
| JP7747720B2 (en) * | 2023-01-05 | 2025-10-01 | 株式会社三井E&S | Blast furnace blower and blast furnace blower control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4857704U (en) * | 1971-10-30 | 1973-07-23 |
-
1978
- 1978-10-31 JP JP1978149857U patent/JPS6319599Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5567377U (en) | 1980-05-09 |
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