斯派莎克蒸汽減壓閥在兄弟化工應(yīng)用
上海申弘閥門有限公司
淮安兄弟化工有限公司采購那一臺DN65的蒸汽減壓閥,進(jìn)口壓力1.0MPA,出口壓力0.3MPA,閥門應(yīng)用在蒸汽管道上,應(yīng)用在化工管道上,淮安兄弟投資有限公司始建于1996年,現(xiàn)有3家子公司淮安兄弟化工有限公司、淮安好兄弟五金化工有限公司、淮安兄弟五金貿(mào)易公司。 淮安兄弟化工有限公司位于中國歷史文化名城,*總理故鄉(xiāng)——江蘇省淮安市經(jīng)濟(jì)技術(shù)開發(fā)區(qū)鹽堿科技產(chǎn)業(yè)園陸集路九號,距南京150 km,與淮安市區(qū)相距18km。化工廠政府對此屢禁不止,所有的化工產(chǎn)業(yè)也成為了污染的代名詞。例如吉林的一次化工廠爆炸,污染了松花江的水質(zhì),致使哈爾濱停水一周多上海申弘閥門有限公司主營閥門有:減壓閥(氣體減壓閥,可調(diào)式減壓閥,波紋管減壓閥,活塞式減壓閥,蒸汽減壓閥,先導(dǎo)式減壓閥,空氣減壓閥,氮?dú)鉁p壓閥,水用減壓閥,自力式減壓閥,比例減壓閥)、安全閥、保溫閥、低溫閥、球閥、截止閥、閘閥、止回閥、蝶閥、過濾器、放料閥、隔膜閥、旋塞閥、柱塞閥、平衡閥、調(diào)節(jié)閥、疏水閥、管夾閥、排污閥、排氣閥、排泥閥、氣動閥門、電動閥門、高壓閥門、中壓閥門、低壓閥門、水力控制閥、真空閥門、襯膠閥門、襯氟閥門。
斯派莎克減壓閥的設(shè)計(jì)制造*依據(jù)使用者的需求,其多元化的組合在工業(yè)界沒有任何其他的減壓閥可與之媲美。為了實(shí)現(xiàn)多目標(biāo)控制設(shè)備的獨(dú)立性和經(jīng)濟(jì)性,可在同一個主閥上組合多種控制,無論是溫度控制、壓力調(diào)節(jié)還是二者在一起,都能做到反應(yīng)迅速、控制、安全可靠。同時,2減壓閥的所有零件均能夠分解檢查或保養(yǎng),而無需移動管路中的主閥體。正確的選型和安裝保養(yǎng),更能保證其*的工作。
工作原理
啟動前導(dǎo)閥彈簧處于自由狀態(tài)時,主閥和導(dǎo)閥處于關(guān)閉狀態(tài)。導(dǎo)閥有彈簧力作用打開,蒸汽經(jīng)由導(dǎo)閥進(jìn)入主隔膜室,一部分蒸汽則經(jīng)由控制孔流出,當(dāng)導(dǎo)閥流入的蒸汽大于由控制孔流出的蒸汽,主隔膜閥中的控制壓力增大,打開主閥。隨著蒸汽流過主閥,下游壓力的增量經(jīng)由感應(yīng)管反饋,作用在導(dǎo)閥隔膜下,平衡隔膜上部的彈簧壓力,使導(dǎo)閥組建關(guān)閉節(jié)流,維持主隔膜中的壓力,控制主閥開度輸送適量的蒸汽。調(diào)節(jié)導(dǎo)閥隔膜上的彈簧即可改變下游壓力。
主要特征
導(dǎo)閥彈簧:三種顏色的彈簧,可提供從0.2-14bar g范圍內(nèi)不同壓力的準(zhǔn)確控制。
溫度調(diào)節(jié)刻度盤:快速準(zhǔn)確的設(shè)定所需溫度。
溫度感應(yīng)器:在溫控元件中有無需補(bǔ)償?shù)囊后w,感應(yīng)瞬時溫度的變化,提供準(zhǔn)確的控制。
的測試:每一個25P系列的減壓閥在出廠前都經(jīng)蒸汽測試,以確保*的操作
Many reducing valve problems are caused by the presence of moisture or dirt. A steam separator and strainer with fine mesh screen, if fitted before the valve, will help to prevent such problems. The strainer is fitted on its side to prevent the body filling with water and to ensure that the full area of the screen is effective. Large isolation valves will also benefit from being installed on their side for the same reason.
All upstream and downstream pipework and fittings must be adequay sized to ensure that the only appreciable pressure drop occurs across the reducing valve itself. If the isolating valves are the same size as the reducing valve connections, they will incur a larger pressure drop than if they are sized to match the correctly sized, larger diameters of the upstream and downstream pipework.
If the downstream pipework or any connected plant is incapable of withstanding the maximum possible upstream pressure, then a safety valve or relief valve must be fitted on the downstream side. This valve should be set at, or below, the maximum allowable working pressure of the equipment, but with a sufficient margin above its normal operating pressure. It must be capable of handling the full volume of steam that could pass through the fully open reducing valve, at the maximum possible upstream pressure.
Pilot operation also allows the reducing valve to be relatively compact compared to other valves of similar capacity and accuracy, and allows a variety of control options, such as on-off operation, dual pressure control, pressure and temperature control, pressure reducing and surplussing control, and remote manual adjustment. Three of these variations can be seen in Figure 7.3.6.
Direct acting and pilot-operated control valves can be used to control either upstream or downstream pressures. Pressure maintaining valves (and surplussing valves) sense upstream pressure, while pressure reducing valves sense downstream pressure.與京滬高速入口12km,交通便利,地理位置*。公司現(xiàn)有員工50余人,其中工程技術(shù)員人員8名。 公司發(fā)展方向是植物提取行業(yè)。植物提取物是以植物為原料,按照對提取的終產(chǎn)品的用途的需要,經(jīng)過物理化學(xué)提取分離過程,定向獲取和濃集植物中的某一種或多種有效成分,不改變其有效成分結(jié)構(gòu)而形成的產(chǎn)品。植物提取物的用途非常廣泛,主要用于藥品、保健食品、煙草、化妝品、日用化學(xué)品、植物源等。公司現(xiàn)定位為甘草酸粉、甘草酸二鉀、甘草酸銨鹽、杏仁酸等產(chǎn)品專業(yè)生產(chǎn)加工的公司,擁有完整、科學(xué)的質(zhì)量管理體系?;窗残值芑び邢薰镜恼\信、實(shí)力和產(chǎn)品質(zhì)量獲得業(yè)界的認(rèn)可。歡迎各界朋友蒞臨參觀、指導(dǎo)和業(yè)務(wù)洽談。伴隨著中國經(jīng)濟(jì)高速發(fā)展,中國的化工產(chǎn)品價格也在節(jié)節(jié)攀升。一位內(nèi)部人士說,當(dāng)年有的化工產(chǎn)品價格甚至能達(dá)到原材料成本的5至6倍。所以說,一個地區(qū)的化工產(chǎn)業(yè)可以*地帶動該地區(qū)的經(jīng)濟(jì)發(fā)展。化工廠多依水而建,往往充足的水源可以吸引更多的化工企業(yè)。但是,中國的化工產(chǎn)業(yè)因此存在很多問題。很多企業(yè)一般不愿意購買處理污染的設(shè)備。這導(dǎo)致了嚴(yán)重的空氣污染和水污染。本文相關(guān)的論文有:中國閥門產(chǎn)值遞增