蝶閥為偏心金屬密封結(jié)構(gòu),密封形式為金屬對金屬密封,可調(diào)換金屬密封圈對金屬密封,不銹鋼板與石墨復(fù)合板密封圈對金屬密封.硬密封蝶閥的驅(qū)動(dòng)形式除了電動(dòng)之外還有:手動(dòng),蝸輪桿傳動(dòng),氣動(dòng)等
D343H蝶閥的蝶板安裝于管道的直徑方向。在蝶閥閥體圓柱形通道內(nèi),圓盤形蝶板繞著軸線旋轉(zhuǎn),旋轉(zhuǎn)角度為0°~90°之間,旋轉(zhuǎn)到90°時(shí),閥門則牌全開狀態(tài)
D343H的結(jié)構(gòu)特點(diǎn):1、結(jié)構(gòu)緊湊、體積小、重量輕、操作靈活、開閉扭矩小、蝶板工作平穩(wěn)、噪音小、維修方便。
2、設(shè)計(jì)采用三維偏心密封原理,可達(dá)到完全密封,氣壓試驗(yàn)泄漏量為零。
3、密封副選用不銹鋼材料,并在制造過程中采用特殊的工藝處理,具有耐高溫、高壓、耐磨、耐腐蝕、使用壽命長的特點(diǎn)。
目前 ,D343H蝶閥作為一種用來實(shí)現(xiàn)管路系統(tǒng)通斷及流量控制的部件,已在石油、化工、冶金、水電等許多領(lǐng)域中得到極為廣泛地應(yīng)用。在已公知的蝶閥技術(shù)中,其密封形式多采用密封結(jié)構(gòu),密封材料為橡膠、聚四氟乙烯等。由于結(jié)構(gòu)特征的限制,不適應(yīng)耐高溫、高壓及耐腐蝕、抗磨損等行業(yè)?,F(xiàn)有一種比較先進(jìn)的蝶閥是三偏心金屬硬密封蝶閥,閥體和閥座為連體構(gòu)件,閥座密封表面層堆焊耐溫、耐蝕合金材料。多層軟疊式密封圈固定在閥板上,這種蝶閥與傳統(tǒng)蝶閥相比具有耐高溫,操作輕便,啟閉無磨擦,關(guān)閉時(shí)隨著傳動(dòng)機(jī)構(gòu)的力矩增大來補(bǔ)償密封,提高了蝶閥的密封性能及延長使用壽命的優(yōu)點(diǎn)。
主要技術(shù)參數(shù)
公稱通經(jīng)DN(mm) |
50~2000 |
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公稱藥理PN(MPa) |
0.6 |
1.0 |
1.6 |
2.5 |
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密封試驗(yàn)(MPa) |
0.66 |
1.1 |
1.76 |
2.75 |
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強(qiáng)度試驗(yàn)(MPa) |
0.9 |
1.5 |
2.4 |
3.75 |
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適用溫度 |
碳鋼:-29℃~425℃ 不銹鋼:-40℃~650℃ |
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適用介質(zhì) |
水、空氣、天然氣、油品及弱腐蝕性流體 |
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|
|
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泄漏率 |
符合GB/T13927-92標(biāo)準(zhǔn) |
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驅(qū)動(dòng)方式 |
蝸輪傳動(dòng)、電動(dòng)、氣動(dòng)、液動(dòng) |
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主要連接尺寸
公稱通經(jīng)(DN) |
主要尺寸 |
法蘭尺寸和螺栓規(guī)格 |
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1.0MPa |
1.6MPa |
2.5MPa |
||||||||||
L |
H1 |
H |
D |
D1 |
n-Фd |
D |
D1 |
n-Фd |
D |
D1 |
n-Фd |
|
50 |
108 |
350 |
112 |
165 |
125 |
4-18 |
165 |
125 |
4-18 |
165 |
125 |
4-18 |
65 |
112 |
370 |
115 |
185 |
145 |
4-18 |
185 |
145 |
4-18 |
185 |
145 |
8-18 |
80 |
114 |
380 |
120 |
200 |
160 |
4-18 |
200 |
160 |
8-18 |
200 |
160 |
8-18 |
100 |
127 |
420 |
138 |
220 |
180 |
8-18 |
220 |
180 |
8-18 |
235 |
190 |
8-22 |
125 |
140 |
460 |
164 |
250 |
210 |
8-18 |
250 |
210 |
8-22 |
270 |
220 |
8-26 |
150 |
140 |
555 |
175 |
285 |
240 |
8-22 |
285 |
240 |
8-22 |
300 |
250 |
8-26 |
200 |
152 |
760 |
200 |
340 |
295 |
8-22 |
340 |
295 |
12-22 |
360 |
310 |
12-26 |
250 |
165 |
830 |
243 |
395 |
350 |
12-22 |
405 |
355 |
12-26 |
425 |
370 |
12-30 |
300 |
178 |
895 |
250 |
445 |
400 |
12-22 |
460 |
410 |
12-26 |
485 |
430 |
16-30 |
350 |
190 |
950 |
280 |
505 |
460 |
16-22 |
520 |
470 |
16-26 |
555 |
490 |
16-33 |
400 |
216 |
1190 |
305 |
565 |
515 |
16-26 |
580 |
525 |
16-30 |
620 |
550 |
16-36 |
450 |
222 |
1255 |
350 |
615 |
565 |
20-26 |
640 |
585 |
20-30 |
670 |
600 |
20-36 |
500 |
229 |
1305 |
380 |
670 |
620 |
20-26 |
715 |
650 |
20-33 |
730 |
660 |
20-36 |
600 |
267 |
1340 |
445 |
780 |
725 |
20-30 |
840 |
770 |
20-36 |
845 |
770 |
20-39 |
700 |
292 |
1520 |
480 |
895 |
840 |
24-30 |
910 |
840 |
24-36 |
960 |
875 |
24-42 |
800 |
318 |
1710 |
530 |
1015 |
950 |
24-33 |
1025 |
950 |
24-39 |
1085 |
990 |
24-48 |
900 |
330 |
1810 |
580 |
1115 |
1050 |
28-33 |
1125 |
1050 |
28-39 |
1185 |
1090 |
28-48 |
1000 |
410 |
1960 |
650 |
1230 |
1160 |
28-36 |
1255 |
1170 |
28-42 |
1320 |
1210 |
28-56 |
1200 |
470 |
2250 |
760 |
1455 |
1380 |
32-39 |
1485 |
1390 |
32-48 |
1530 |
1420 |
32-56 |
1400 |
530 |
2435 |
850 |
1675 |
1590 |
36-42 |
1685 |
1590 |
36-48 |
1755 |
1640 |
36-62 |
1600 |
600 |
2780 |
1030 |
1915 |
1820 |
40-48 |
1930 |
1820 |
40-56 |
1975 |
1860 |
40-62 |
1800 |
670 |
3020 |
1230 |
2115 |
2020 |
44-48 |
2130 |
2020 |
44-56 |
2195 |
2070 |
44-70 |
2000 |
760 |
3270 |
1350 |
2325 |
2230 |
48-48 |
2345 |
2230 |
48-62 |
2425 |
2300 |
48-70 |
1、Standard, product name, model, nominal diameter.
2、Medium, temperature and pressure range.
3、Are there any accessories, delivery time, special requirements, etc. so that we can choose the right type for you.
二、If the design unit has selected the valve model of our company, please order directly with our sales center according to the valve parameters.A、According to the special requirements of customers, technical exchange, design and manufacture of products.
B、Provide pre-sale technical questions for customers to help customers rationalize selection.
C、Provide new, special and difficult engineering production technology consultation or draw up suitable production plan
2、Sale ServiceA、Keep the contract and deliver on time.
B、Keep in touch with customers in time to solve problems.
3、After-sales ServiceA、Assist customers in drafting construction cases
B、Regular return visit usage
C、During the warranty period, free repair / replacement of quality problems
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