一、概述Outline
QJ（N/T）Z型氣動偏心旋轉調節閥（或稱凸輪撓曲調節閥）由偏心旋轉閥，氣動執行機構、閥門定位器、手輪機構組成。
產品特點如下：
1.閥座磨損小，使用壽命長：球面閥芯回旋中心不與閥桿旋轉軸同心，可減少閥座磨損，延長控制閥壽命；
2.泄漏量?。洪y芯和閥座關閉時，閥芯繞臂在執行機構推力作用下產生微小彈性變形及彈性漲緊力，使閥芯與閥座更加緊密牢固，大大地減小泄漏量；
3.執行機構所需扭矩比球閥，蝶閥的小：該產品綜合了單座閥、球閥、蝶閥等控制閥的優點，具有閥體流路簡單，流阻小、額定流量系數大，可調比大、泄漏量小，密封性能好及體積小，重量輕等特點，可廣泛應用于石油石化，冶金，醫藥等行業的控制系統中。
二、結構原理Structure principle
氣動偏心旋轉閥閥芯，閥桿作旋轉運動，所以調節閥在工作過程中所受摩擦力很小，當閥芯和閥座相接觸關閉時，閥芯繞臂在執行機構推力作用下產生微小彈性變形及彈性漲緊力，使閥芯與閥座接觸更加緊密牢固，因此偏心旋轉閥泄漏量很小。同時關閉閥門所需的執行機構推力與球閥、蝶閥相比要小。另外在閥芯與上，下導向之間留有一定的間隙以確保閥芯能自動對中。
在偏心旋轉閥產品中，省去了閥蓋這一單獨零件，閥蓋與閥體鑄成一體，由于閥蓋較長，有足夠的散熱面積，故偏心旋轉閥的使用溫度為-40~+350℃。
三、主要技術參數和性能指標The main technical parameters and performance indicators
1.主要技術參數Main technical parameters
|
公稱通徑mm |
25 |
40 |
50 |
80 |
100 |
150 |
200 |
250 |
300 |
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|
流量系數Kv |
4.8 |
7.2 |
12 |
10.4 |
15.6 |
26 |
17 |
25 |
43 |
46 |
69 |
115 |
78 |
118 |
196 |
171 |
156 |
428 |
290 |
436 |
726 |
444 |
666 |
1111 |
598 |
898 |
1496 |
|
|
固有流量特性 Inherent flow characteristic |
近似線性（對數、線性等特性必須配用閥門定位器） Approximay linear （logarithmic, linear and other features must be equipped with valve positioner） |
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|
公稱壓力MPa |
PN1. 6、 6. 4； ANSI 150、 300 、600 |
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|
額定行程 Rated travel |
轉角50℃ Corner 50 ℃ |
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|
工作溫度 Temperature℃ |
-40~+350 |
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|
可調比 Adjustable ratio |
100:1 |
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|
執行機構 Executive body |
滾動膜片式 Rolling Diaphragm |
DL1 |
DL2 |
DL3 |
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|
氣動活塞式 Pneumatic piston |
PL1 |
PL2 |
PL3 |
PL4 |
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|
連接形式 Connection form |
對夾式（管道法蘭JB/T79. 2-94） Wafer （pipe flange JB/T79. 2-94） |
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2.性能指標Performance indicators
|
項 目Item |
帶定位器With locator |
||
|
基本誤差% Basic error% |
±2.0 |
||
|
回 差% Differential% |
2.0 |
||
|
死 區% Dead% |
0.8 |
||
|
始終點偏差% Always point deviation% |
氣 開 Open air |
始點 Starting point |
±2.0 |
|
終點End |
|||
|
氣 關 Gas off |
始點 Starting point |
||
|
終點End |
|||
|
額定轉角偏差% Rated angle deviation% |
+2.5 |
||
|
允許泄漏量L/h Allowable leakage L / h |
ANSI B16 104 IV（硬密封）、VI（軟密封） ANSI B16 104 IV （seal）, VI （soft seal） |
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四、允許壓差Permissible differential pressure
1.硬密封結構Seal structure
|
閥體口徑（mm） |
Kv |
氣開流開式 Open-air open flow |
氣開流關型或氣關流開型 Open flow gas shut off gas flow-type or open type |
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|
氣源壓力Air pressure |
||||||||||||||
|
|
|
|
0.14 |
0.18 |
0.21 |
0.25 |
0.28 |
0.32 |
0.35 |
0.39 |
0.42 |
0.46 |
0.49 |
0.53 |
|
25 |
12 |
7.0 |
7.0 |
— |
— |
— |
— |
— |
|
|
|
|
|
|
|
4.8 |
10.2 |
10.2 |
— |
— |
— |
— |
— |
|
|
|
|
|
|
|
|
40 |
26 |
4.7 |
3.0 |
5.6 |
— |
— |
— |
— |
|
|
|
|
|
|
|
10.4 |
9.8 |
6.3 |
10.2 |
— |
— |
— |
— |
|
|
|
|
|
|
|
|
50 |
43 |
2.5 |
1.6 |
3.5 |
4.2 |
— |
— |
|
|
|
|
|
|
|
|
17 |
5.2 |
3.3 |
7.0 |
7.0 |
— |
— |
|
|
|
|
|
|
|
|
|
80 |
115 |
2.0 |
1.3 |
2.7 |
4.2 |
— |
— |
— |
|
|
|
|
|
|
|
46 |
4.5 |
2.8 |
6.1 |
7.0 |
— |
— |
— |
|
|
|
|
|
|
|
|
100 |
196 |
1.0 |
0.63 |
1.4 |
2.2 |
3.1 |
3.9 |
4.1 |
|
|
|
|
|
|
|
78 |
2.2 |
1.4 |
3.0 |
4.9 |
6.8 |
7.0 |
7.0 |
|
|
|
|
|
|
|
|
150 |
428 |
0.63 |
|
|
0.35 |
0.91 |
1.4 |
2.1 |
2.5 |
3.1 |
3.7 |
4.2 |
— |
— |
|
— |
|
|
0.35 |
0.91 |
1.4 |
2.1 |
2.5 |
3.1 |
3.7 |
4.2 |
— |
— |
||
|
— |
|
|
0.35 |
0.91 |
1.4 |
2.1 |
— |
— |
— |
— |
— |
— |
||
|
171 |
1.4 |
|
|
0.77 |
2.0 |
3.2 |
4.4 |
5.6 |
6.8 |
7.0 |
— |
— |
— |
|
|
— |
|
|
0.77 |
2.0 |
3.2 |
4.4 |
5.6 |
6.8 |
7.0 |
— |
— |
— |
||
|
— |
|
|
0.77 |
2.0 |
3.2 |
3.5 |
— |
— |
— |
— |
— |
— |
||
|
200 |
726 |
0.32 |
|
|
0.18 |
0.42 |
0.7 |
1.0 |
1.3 |
1.5 |
1.8 |
2.1 |
2.4 |
2.5 |
|
— |
|
|
0.18 |
0.42 |
0.7 |
1.0 |
1.3 |
— |
— |
— |
— |
— |
||
|
— |
|
|
0.18 |
0.42 |
0.63 |
— |
— |
— |
— |
— |
— |
— |
||
|
436 |
0.49 |
|
|
0.28 |
0.7 |
1.1 |
1.5 |
2.0 |
2.4 |
2.8 |
3.2 |
3.7 |
3.9 |
|
|
— |
|
|
0.28 |
0.7 |
1.1 |
1.5 |
2.0 |
— |
— |
— |
— |
— |
||
|
— |
|
|
0.28 |
0.7 |
1.0 |
— |
— |
— |
— |
— |
— |
— |
||
|
290 |
0.77 |
|
|
0.42 |
1.1 |
1.8 |
2.5 |
3.2 |
3.9 |
4.5 |
5.2 |
5.9 |
6.3 |
|
|
— |
|
|
0.42 |
1.1 |
1.8 |
2.5 |
3.2 |
— |
— |
— |
— |
— |
||
|
— |
|
|
0.42 |
1.0 |
1.5 |
— |
— |
— |
— |
— |
— |
— |
||
2.硬密封結構Seal structure
|
閥體口徑 （mm） |
Kv |
氣開流開式 Open-air open flow |
氣開流關型或氣關流開型 Open flow gas shut off gas flow-type or open type |
||||||||||
|
氣源壓力Air pressure |
|||||||||||||
|
|
|
|
0.14 |
0.18 |
0.21 |
0.25 |
0.28 |
0.32 |
0.35 |
0.39 |
0.42 |
0.46 |
0.49 |
|
25 |
12 |
5.6 |
5.6 |
— |
— |
— |
— |
— |
|
|
|
|
|
|
4.8 |
7.0 |
7.0 |
— |
— |
— |
— |
— |
|
|
|
|
|
|
|
40 |
26 |
3.5 |
1.6 |
4.9 |
— |
— |
— |
— |
|
|
|
|
|
|
10.4 |
7.0 |
3.7 |
7.0 |
— |
— |
— |
— |
|
|
|
|
|
|
|
50 |
43 |
1.8 |
0.7 |
2.6 |
4.2 |
— |
— |
|
|
|
|
|
|
|
17 |
3.7 |
1.6 |
5.3 |
7.0 |
— |
— |
|
|
|
|
|
|
|
|
80 |
115 |
1.4 |
0.62 |
2.1 |
3.5 |
— |
— |
— |
|
|
|
|
|
|
46 |
3.4 |
1.6 |
4.8 |
5.6 |
— |
— |
— |
|
|
|
|
|
|
|
100 |
196 |
0.7 |
0.25 |
1.1 |
1.8 |
2.6 |
3.4 |
3.5 |
|
|
|
|
|
|
78 |
1.6 |
0.7 |
2.3 |
4.0 |
5.6 |
5.6 |
5.6 |
|
|
|
|
|
|
|
150 |
428 |
0.42 |
|
|
0.14 |
0.63 |
1.2 |
1.7 |
2.2 |
2.7 |
3.2 |
3.5 |
— |
|
— |
|
|
0.14 |
0.63 |
1.2 |
1.7 |
2.2 |
2.7 |
3.2 |
3.5 |
— |
||
|
— |
|
|
0.14 |
0.63 |
1.2 |
1.7 |
2.2 |
— |
— |
— |
— |
||
|
171 |
1.1 |
|
|
0.42 |
1.5 |
2.7 |
3.7 |
4.8 |
5.6 |
— |
— |
— |
|
|
— |
|
|
0.42 |
1.5 |
2.7 |
3.7 |
4.8 |
5.6 |
— |
— |
— |
||
|
— |
|
|
0.42 |
1.5 |
2.7 |
3.7 |
— |
— |
— |
— |
— |
||
|
200 |
726 |
0.14 |
|
|
|
0.28 |
0.52 |
0.77 |
1.1 |
1.3 |
1.5 |
1.8 |
2.1 |
|
— |
|
|
|
0.28 |
0.52 |
0.77 |
1.1 |
1.3 |
— |
— |
— |
||
|
— |
|
|
|
0.28 |
0.52 |
0.63 |
— |
— |
— |
— |
— |
||
|
436 |
0.28 |
|
|
|
0.46 |
0.84 |
1.2 |
1.6 |
2.0 |
2.4 |
2.8 |
3.2 |
|
|
— |
|
|
|
0.46 |
0.84 |
1.2 |
1.6 |
2.0 |
— |
— |
— |
||
|
— |
|
|
|
0.46 |
0.84 |
0.96 |
— |
— |
— |
— |
— |
||
|
290 |
0.49 |
|
|
|
0.77 |
1.4 |
2.0 |
2.6 |
3.2 |
3.8 |
4.4 |
4.9 |
|
|
— |
|
|
|
0.77 |
1.4 |
2.0 |
2.6 |
3.2 |
— |
— |
— |
||
|
— |
|
|
|
0.77 |
1.4 |
1.5 |
— |
— |
— |
— |
— |
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五、外形尺寸及重量Dimensions and weight
|
閥體口徑
（mm） |
A |
B |
C |
D |
E |
F |
G |
H |
J |
K |
L |
重量（kg） |
|
無法蘭 Not blue |
無法蘭 Not blue |
|||||||||||
|
25 |
102 |
173 |
297 |
208 |
163 |
140 |
110 |
67 |
206 |
38 |
137 |
12 |
|
40 |
114 |
175 |
300 |
211 |
163 |
140 |
110 |
62 |
234 |
51 |
165 |
14 |
|
50 |
124 |
175 |
300 |
211 |
163 |
140 |
110 |
62 |
239 |
66 |
170 |
16 |
|
80 |
165 |
262 |
434 |
229 |
163 |
175 |
118 |
97 |
333 |
84 |
244 |
35 |
|
100 |
194 |
264 |
437 |
229 |
163 |
175 |
118 |
106.5 |
356 |
109 |
267 |
48 |
|
150 |
229 |
330 |
533 |
302 |
254 |
128 |
197 |
127 |
432 |
147 |
323 |
86 |
|
200 |
243 |
333 |
536 |
305 |
254 |
128 |
197 |
147 |
470 |
203 |
361 |
127 |
|
250 |
297 |
335 |
538 |
310 |
254 |
128 |
197 |
167 |
574 |
251 |
465 |
156 |
|
300 |
338 |
338 |
541 |
312 |
254 |
128 |
197 |
184 |
610 |
277 |
500 |
184 |
六、可配附件Available Accessories
根據工藝要求可配電氣轉換器（或電-氣閥門定位器）、空氣過濾減壓器、保位閥、行程開關、電磁閥等。
