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簡要描述:電液動(dòng)平板閥,手動(dòng)平板閘閥,氣動(dòng)平板閘閥,焊接平板閘閥,無導(dǎo)流孔平板閘閥,帶導(dǎo)流孔平板閘閥
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石油行業(yè)中,石油專用電動(dòng)平板大口徑閘閥是一種使用滑動(dòng)閥門的關(guān)閉裝置。該閥門可以采用單一的閘板或帶有撐開機(jī)構(gòu)的雙閘板作為關(guān)閉件。通過介質(zhì)壓力控制閘板與閥座之間的密封程度,從而實(shí)現(xiàn)對閥門的控制。如果是雙閘板平板閘閥,兩個(gè)閘板之間的撐開機(jī)構(gòu)可提高密封性能。該閥門采用金屬對金屬的密封方式,并外部設(shè)置注油脂結(jié)構(gòu),通過注脂器和閥座進(jìn)入閥門密封面,以確保無泄漏。
在石油行業(yè)的各種流體管道系統(tǒng)中,廣泛應(yīng)用了平板閘閥。其可靠的密封性能使其成為管道系統(tǒng)中不可或缺的組件之一。此外,平板閘閥還具備操作靈活、流通阻力小、耐高壓等特點(diǎn),適用于多種工作環(huán)境。
在選擇平板閘閥時(shí),需要根據(jù)不同的工況和介質(zhì)特性來確定最合適的型號和材料。例如,在高溫高壓環(huán)境下,應(yīng)選擇耐高溫高壓材料,以確保閥門的穩(wěn)定運(yùn)行。此外,還需要考慮介質(zhì)的腐蝕性和粘度等因素,以便選擇適當(dāng)?shù)拈y門材料。
平板閘閥的使用壽命和性能穩(wěn)定性也取決于正確的安裝和維護(hù)。在安裝過程中,應(yīng)確保閥門與管道連接牢固,避免泄漏問題。同時(shí),在使用過程中,需要定期檢查閥門的工作狀態(tài),及時(shí)清潔和更換損壞的零部件。這樣可以延長閥門的使用壽命,并確保其正常運(yùn)行。
總之,石油行業(yè)中的石油專用電動(dòng)平板大口徑閘閥是一種重要的工業(yè)閥門設(shè)備,具有良好的密封性能和耐壓能力。通過正確的選擇、安裝和維護(hù),可以使其在流體管道系統(tǒng)中發(fā)揮出最佳的功能和效果。
石油專用電動(dòng)平板大口徑閘閥閥體有鑄造和焊接兩種結(jié)構(gòu)。
Cast and weld two structures with the body
閥座采用O 形密封圈密封和施加預(yù)緊力的浮動(dòng)閥座結(jié)構(gòu),使閥門進(jìn)出口雙向密封;并且該結(jié)構(gòu)的啟閉力矩僅為普通閥門的1/2,能達(dá) 到輕松開、關(guān)閥門。
The seat ring uses the floating seat ring structure with o-seal ring sealed and pre-tightening force applied to have inlet and outlet dual-way sealed;and the open-close moment with this structure is 1/2 that of the common valves only,able to lightly open and close valves.
閥座采用密封面上鑲嵌PTFE, 具有PTFE 對金屬和金屬對金屬的雙重密封,PTFE 密封面同時(shí)清除閘板臟物的作用。
The seat ring uses the sealing face inlaid with PTFE,so has dual seals of PTFE to metal and metal to metal,the PTFE sealing face also acts as removing the dirt on the wedge disc.
金屬對金屬密封的閥門,閥體外部設(shè)有注油脂結(jié)構(gòu),油脂通過注脂器、閥座進(jìn)入閥門密封面,使閥門達(dá)到零泄漏。
For the valve with the metal to metal seal,there is grease injector outside of it,grease gets into the sealing face through the injector and the seat ring to have the valve up to null leak.
帶導(dǎo)流孔閥門的閘板,無論是全開或是全關(guān)始終與密封面吻合,密封面得到保護(hù)不受介質(zhì)直接沖刷,從而延長使用壽命。
The wedge disc of the valve with flow guide hole is always fitted with the sealing face whether in full open or full close status to have the sealing face protected without being directly eroded by the medium so as to extend the duration.
閥門在全開時(shí),通道平滑為直線,流阻系數(shù)極小,無壓力損失,可通毛球清掃管線。
When fully opened,the valve's channel is smooth and linear,with an extremely small flow resisting coefficient and no pressure loss,and the pipeline can be cleaned with hair-ball through it.
本閥門采用帶自密封能力的填料結(jié)構(gòu),無需經(jīng)常調(diào)節(jié),開、關(guān)極為輕便,且密封性可靠,填料函處設(shè)有輔助密封油脂注入結(jié)構(gòu),石油專用電動(dòng)平板大口徑閘閥密 封性能絕對可靠,真正達(dá)到零泄漏;解決了通用閥門填料處最容易外漏的弊病。
This valve uses the packing structure with the abilty of self-seal,needs no constant adjustment,features very light open and close and a reliable seal.An assisting sealing grease injection structure is set in the packing to have the sealing performance absolutely reliable and get a true null leak,settling the problem for the packing place of universal valves to be easiest leak outward.
閥門關(guān)閉時(shí)能自動(dòng)卸掉內(nèi)腔高壓(詳見工作原理圖),保證使用安全。
Automatic removal of the high pressure in the intemal cavity when the valve is about to close (see the working principle diagram for the details)so as to ensure safety.
全封閉結(jié)構(gòu),防護(hù)性能好,可適應(yīng)全天候要求。
Fully sealed structure leaves a good protective property,suitable for the requirement of 24-hour duty.
閥門設(shè)有指示桿或觀察窗以表示閥門的啟閉情況。
An indication rod or viewing window is set with the valve to show the open-close condition.
石油專用電動(dòng)平板大口徑閘閥產(chǎn)品性能規(guī)范Products Performance Specification
壓力等級 Pressure |
常溫試驗(yàn)壓力(MPa) Testing pressure at constant temperature (Mpa |
適用溫度 Applicable emperature |
適用介質(zhì) Applicable medium |
|||||
青體試張 The che testing |
左密封 he eft sealing |
有密封 sealing |
低壓氣密封 _ow pressure air tightness |
普通型 Ordinary type |
抗硫型 Antisulphur type |
|||
公稱壓力 (MPa) Nominal rating pressure (PN) |
1.6 |
2.4 |
1.76 |
1.76 |
0.6 |
-29~121℃ 或按用戶要求
_29~121℃ or upon the user Tequiremov |
石油、天然氣、水 等非腐蝕性介質(zhì)
Petroleum,natura gas,water etc.non- corrosive media |
含HzS、CO2的石油、天 然氣、水等腐蝕性介質(zhì)
Petroleum,natural gas water etc,containing H2S CO2 corrosive media |
2.5 |
3.75 |
2.75 |
2.75 |
0.6 |
||||
4.0 |
6.0 |
4.4 |
4.4 |
0.6 |
||||
6.4 |
9.6 |
7.04 |
7.04 |
0.6 |
||||
0.0 |
15.0 |
1.0 |
11.0 |
0.6 |
||||
16.0 |
24.0 |
17.6 |
17.6 |
0.6 |
||||
25.0 |
37.6 |
27.E |
27.5 |
0.6 |
||||
42.0 |
63.0 |
46.2 |
46.2 |
0.6 |
||||
磅級(Lb) Pound grade (Class) |
150 |
3.0 |
2.2 |
2.2 |
0.6 |
|||
300 |
7.5 |
5.5 |
5.5 |
0.6 |
||||
400 |
9.6 |
7.04 |
0.6 |
|||||
600 |
15.0 |
11.0 |
11.0 |
0.6 |
||||
900 |
22.5 |
17.5 |
17.5 |
0.6 |
||||
500 |
37.5 |
27.5 |
27.5 |
0.6 |
||||
2500 |
63.0 |
46.2 |
46.2 |
0.6 |
●工作原理 Working Principle
1、閥門內(nèi)部壓力相當(dāng)時(shí)(1),閘板處于閉合狀態(tài),閥座表面PTFE 密封環(huán)形成初始密封,每次閥 門開或關(guān)時(shí),閥座圈能清潔閘板兩側(cè)。(如圖1)
With equal pressure throughout the valve(and the gate in closed position),and initial seal(1)is formed with the raised PTFE ring on the faces of the seats.(The seat-inserts clean both sides of the gate each time the valve is opened or closed)
圖(1)
2、 對閥門施加管道壓力時(shí)(2),壓力作用于閘板,迫使它貼近出口閥座上的PTFE 環(huán),壓縮它直 到閘板停在鋼制閥座上,這樣,就形成了雙重密封,首先是PTFE 對金屬密封,然后是金屬對金屬密 封,閥座也被牢固地推到凹槽,在這一點(diǎn)(3),O 形圈阻止任何后部介質(zhì)流。(如圖2)
As line pressure (2)is applied to the valve.it acts on the gate,forcing it against the PTFE ring on the downstream seat,compressingit until the seat against the steel seat.Thus,a double seal is formed…first,a PTFE-to-metal seal;then,metal-to-metal.The seat is also forced firmly into its recess.The O-ring(3)prevents any downstream flow at this point.
圖(2)
3、 閥腔壓力泄放后,形成進(jìn)口密封,管道壓力作用于進(jìn)口閥座(4),使其移向閘板,這時(shí)形成 PTFE 對金屬的密封,同時(shí),O 形圈(5)與閥座凹槽形成緊密的密封。(如圖3)
Upstream seal is provided when valve cavity pressure is bled off.This is caused by the force of line pressure acting against the upstream seat(4)moving the seat against the gate and providing a tight PTFE-to metal seal at this point.At the same time.the O-ring(5)forms a tight seal with the seat recess.
圖(3)
4、石油專用電動(dòng)平板大口徑閘閥 自動(dòng)泄放多余的壓力,當(dāng)閥腔壓力大于管道壓力時(shí),由于熱膨脹,進(jìn)口閥座推向凹槽, 閥腔內(nèi)多余的壓力在閥座與閘板之間泄放到管道中。(如圖4)
Valve automatically relieves itself of excessive valve cavity pressure.When valve cavity pressure exceeds line pressure…from such causes as thermal expansion…the upstream seat is forced back into its recess and the excess pressure in the valve cavity is bled between the seat and the gate into the line.
圖(4)
●產(chǎn)品主要參數(shù) Main Parameter of the Products
基本型號 Serial models |
(K)Z43WF、(K)Z43WY、(K)Z43WD、(K)Z44WF、(K)Z44WY、(K)Z44WD (K)Z543WF、(K)Z543WY、(K)Z543WD、(K)Z544WF、(K)Z544WY、(K)Z544WD (K)Z643WF、(K)Z643WY、(K)Z643WD、(K)Z644WF、(K)Z644WY、(K)Z644WD (K)Z943WF、(K)Z943WY、(K)Z943WD、(K)Z944WF、(K)Z944WY、(K)Z944WD |
|||
壓力等級范圍 Pressure grade range |
PN1.6~15.0MPa |
Class150~900 |
||
通徑范圍 Drift diameter range |
DN25~1000mm |
1"~40° |
||
驅(qū)動(dòng)方式 Driving manner |
手輪驅(qū)動(dòng) Hand wheel driving |
齒輪動(dòng)、氣動(dòng)、液動(dòng)、電動(dòng) Gear dnving,air-operating,hydrodynamic diving and electric dnvng |
||
適用范圍 Scope of application |
Class150~300 (PN1.6~4.0) |
Classaoo (PN6.4) |
Class600~900 PN10.0~15.0 |
Class150~900 |
1"~40 DN25~1000mm) |
1"-28 (DN25~700mm) |
1"~12" DN25~300mm) |
1"~40 (DN25~1000mm) |
注:本公司可根據(jù)用戶要求提供產(chǎn)品。
Note:Our company can provide products at customres request.
平板閘閥
Flat-plate Gate VALVE
●流量特性分析
帶導(dǎo)流孔的平板閘閥,其流量特性等同于同規(guī)格的管道,呈等
百分比特性,不帶導(dǎo)流孔的平板閘閥,其中腔跨度較楔式閘閥小,
且屬于規(guī)則的圓柱體,所以,基本上除壓力損失較帶導(dǎo)流孔的大外,
其余特性基本接近。不帶導(dǎo)流孔調(diào)節(jié)型的平板閘閥其對流量的調(diào)節(jié)
特性優(yōu)于普通不帶導(dǎo)流孔的平板閘閥。
●Flow Charalteristic
?The flow characteristic of flat gate valves with a diversion hole is
equal to that of pipelines of thesame specification.The characteristic
is shown in per centum form.As for valves without a diversion hole,
its cavity fly span is smaller than that of wedge gate vales and it is a
regular cylindrical object,therefore,characteristics of the valves
are similar except that they have a larger pressure loss.Besides,
their flux adjustment behavior is better than that of the ones with a
deversion hole.
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