JPH0163797U - - Google Patents
Info
- Publication number
- JPH0163797U JPH0163797U JP1987158641U JP15864187U JPH0163797U JP H0163797 U JPH0163797 U JP H0163797U JP 1987158641 U JP1987158641 U JP 1987158641U JP 15864187 U JP15864187 U JP 15864187U JP H0163797 U JPH0163797 U JP H0163797U
- Authority
- JP
- Japan
- Prior art keywords
- output
- calculator
- signal
- surge prevention
- controller
- 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.)
- Pending
Links
- 230000002265 prevention Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Control Of Positive-Displacement Air Blowers (AREA)
Description
第１図は本考案のサージ防止コントローラの一
実施例のブロツク線図、第２図は従来のコンプレ
ツサ及びサージ防止制御系の一例の概念図、第３
図は同従来のサージ防止コントローラの一例のブ
ロツク線図、第４図は第２図のコンプレツサの特
性線図である。
図中、１……コンプレツサ、２……タービン又
はモータ、３……サクシヨンドラム、４……デイ
スチヤージクーラ、５……入口弁、６……アンチ
サージ弁、７……出口弁、８……サージ防止コン
トローラ、９……流量比較器、１０……差圧検出
器、２１……係数器、２２……比例演算器、２３
……積分演算器、２５……微分演算器、２６……
比較器、２７……切換器、３０……第１加算器、
３１……減算器、３２，３２′……加算器、５０
……コンプレツサの入口ライン、５１′……コン
プレツサの出口ライン、ａ……第１加算器の出力
信号、ｃ……加算器の出力信号、ｅ……制御偏差
信号、ｌｏ……サージリミツトライン、ｌｃ……
サージコントロールライン、ΔＰｃ……コンプレ
ツサの入側・出側間の差圧、Ｑｓ……コンプレツ
サ吸入流量、ｂ……定数、Ａ……正常運転領域、
Ｂ……リサイクル領域、Ｃ……サージング領域。
Figure 1 is a block diagram of an embodiment of the surge prevention controller of the present invention, Figure 2 is a conceptual diagram of an example of a conventional compressor and surge prevention control system, and Figure 3 is a conceptual diagram of an example of a conventional compressor and surge prevention control system.
The figure is a block diagram of an example of the conventional surge prevention controller, and FIG. 4 is a characteristic diagram of the compressor shown in FIG. 2. In the figure, 1... Compressor, 2... Turbine or motor, 3... Suction drum, 4... Discharge cooler, 5... Inlet valve, 6... Anti-surge valve, 7... Outlet valve, 8 ... Surge prevention controller, 9 ... Flow rate comparator, 10 ... Differential pressure detector, 21 ... Coefficient unit, 22 ... Proportional calculator, 23
... Integral calculator, 25... Differential calculator, 26...
Comparator, 27...Switcher, 30...First adder,
31...Subtractor, 32, 32'...Adder, 50
...Compressor inlet line, 51'...Compressor outlet line, a...Output signal of first adder, c...Output signal of adder, e...Control deviation signal, l o ...Surge limit line, l c ...
Surge control line, ΔP c ... Differential pressure between the inlet and outlet sides of the compressor, Q s ... Compressor suction flow rate, b ... Constant, A ... Normal operating area,
B... Recycling area, C... Surging area.
Claims (1)
差信号及び所定の負値信号を入力する比較器と、
上記制御偏差信号を入力する微分演算器と、同比
較器の出力信号を入力するとともに微分演算器の
出力を一方の入力端子とし他方の入力端子を接地
端子とし自己の出力を比例演算器及び積分演算器
の出力の加算器に入力する切換器とを備えてなる
ことを特徴とするサージ防止コントローラ。 In the surge prevention PI controller, a comparator inputting a control deviation signal and a predetermined negative value signal;
A differential calculator which inputs the above-mentioned control deviation signal, and which inputs the output signal of the same comparator, uses the output of the differential calculator as one input terminal and the other input terminal as a ground terminal, and uses its own output as a proportional calculator and an integrator. A surge prevention controller comprising: a switch for inputting the output of a computing unit to an adder;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987158641U JPH0163797U (en) | 1987-10-19 | 1987-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987158641U JPH0163797U (en) | 1987-10-19 | 1987-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0163797U true JPH0163797U (en) | 1989-04-24 |
Family
ID=31439147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987158641U Pending JPH0163797U (en) | 1987-10-19 | 1987-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0163797U (en) |
-
1987
- 1987-10-19 JP JP1987158641U patent/JPH0163797U/ja active Pending
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