|
|
|
產(chǎn)品概述/Product overview
螺旋板式換熱器是一種換熱器設備，適用汽—汽、汽—液、液—液，對液傳熱。它適用于化字、石油、溶劑、醫(yī)藥、食品、輕工、紡織、冶金、軋鋼、焦化等行業(yè)。按結(jié)構(gòu)形式可分為不可拆式（Ⅰ型）螺旋板式及可拆式（Ⅱ型，Ⅲ型）螺旋板式換熱器。
Spiral-plate heat exchanger is a kind of high efficient heat exchanger device which is applicable to vapor-vapor, vapor - liquid, liquid – liquid heat transfer to liquid. It is suitable for chemical, oil, solvents, pharmaceutical, food, light industry, textile, metallurgy, steel rolling, coking and other industries. It can be divided into non-detachable type (Ⅰ) and detachable type (Ⅱ, Ⅲ) spiral plate heat exchangers according to the structural form. |
結(jié)構(gòu)及性能/Structure and performance
1、本設備適用于：液—液，氣—氣，氣—液對流傳熱可用于蒸汽冷凝和液體蒸發(fā)傳熱，化工，石油，醫(yī)藥，機械，電力，輕工和紡織等工業(yè)部門均可選用。
2、本設備由兩張鋼板卷制而成，形成了兩個均勻的螺旋通道，兩種傳熱截止可進行全逆流流動，適用小溫差傳熱，便于回收低溫熱源并可準確地控制出口溫度。
3、在殼體上的接管是切向結(jié)構(gòu)，局部阻力小，螺旋通道的曲率是均勻的，流體在設備內(nèi)流動沒有大的換向，總的阻力小，因而可提高設計流速使之具備較高的傳熱能力。
4、螺旋通道的端面是焊接密封的，密封性能好，結(jié)構(gòu)可靠。
5、不易檢修，尤其是內(nèi)部板出現(xiàn)問題時難修理，有些廠把設備兩端焊縫全部車掉，重新將板展平補焊后再卷制，這樣做消耗的工時太大，因選用螺旋板式換熱器防腐是重要的。
6、不能進行機械清洗，生產(chǎn)實踐證明，螺旋板換熱器與一般列管式換熱器相比是不容易堵塞的，尤其是泥沙、小貝殼等懸浮顆粒雜質(zhì)不易在螺旋通道內(nèi)沉積，分析其原因；一是因為它是單通道雜質(zhì)在通道內(nèi)的沉積一形成周轉(zhuǎn)的流還就會提高至把它沖掉，二事故因為螺旋通道內(nèi)沒有死角，雜質(zhì)容易被沖出。
7、因為螺旋通道內(nèi)有定距柱支撐通道間距，甩以不得有纖維狀雜質(zhì)（棉紗，草棍，樹葉等）進入換熱器內(nèi)部。
8、嚴格控制冷卻水出口溫度在結(jié)垢溫度以下。
9、常用的清洗方法是用蒸汽吹凈或堿洗，蒸汽吹入要向接管，把雜質(zhì)從設備內(nèi)吹出，多使用廠認為這是行之有效的方法。
1, this equipment is suitable for liquid - liquid, gas-gas, gas - liquid convection heat transfer which can be used for vapor condensation and liquid evaporation heat transfer. Therefore it is applicable in chemical industry, petroleum, medicine, machinery, electric power, light industry and textile industries, etc.
2, this equipment is composed by two pieces of steel plates to form two uniform spiral channels. Two heat transfer cut-off ways may realize fully reversed flow which is applicable for heat transfer with small temperature differential. Therefore it is easy for low temperature heat source recycling and accurate outlet temperature control.
3, the connection pipe on the shell is of tangential structure with small partial resistance. The curvature of spiral channel is even and the fluid has no large direction change inside the equipment. Therefore the total resistance is small which may increase design flow speed and realize higher heat transfer ability.
4. The end surface of spiral channel is sealed by welding, therefore the sealing performance is good with reliable structure.
5. It is not easy for inspection and repairing, especially when problems occur on inner plate. Some factories will cut off the weld joints at two ends of the equipment and spread the plate for welding repairing before rolling. However, this may takes a lot of time. Therefore corrosion proof is important when use spiral plate heat exchanger.
6. Mechanical cleaning is not allowed. It is proved by production practice that compared with general tube type heat exchanger, it is not easy to be blocked, especially, by the silt, small shell and other suspended particles and impurities which are not easy to be settled down in the spiral channel. The reasons are: 1. these impurities are settled down in single-direction channel and the impurities will be flushed away once rotating flow is formed. 2. There’s no dead corner inside the spiral channel, therefore the impurities are easy to be flushed away.
7. There are spacing columns inside the spiral channel to support distance in the channel, therefore fiber shaped impurities (cotton yarn, grass stick and leaves, etc.) are not allowed to enter inner part of the heat exchanger.
8. Temperature of cooling water outlet shall be strictly controlled below the scaling temperature.
9. The commonly used cleaning method is steam blowing off or alkaline cleaning. Steam blowing is to blow the impurities out of the equipment which is a effective method believed by many factories.
產(chǎn)品優(yōu)勢/Product advantages
螺旋板式換熱器適用于化學、石油、溶劑、醫(yī)藥、食品、輕工、紡織，冶金，軋鋼、焦化等行業(yè)。
不可拆式螺旋板換熱器是按標準基本參數(shù)與尺寸的規(guī)定而進行設計的，它具備制造簡單，成本低，體積小和傳熱性能好等優(yōu)點，但也有它的不足之處，例如不能進行機械清洗，壞了不易檢修等，選用者應根據(jù)工程的實際情況選取具體的設備使之為有效。
The spiral plate heat exchanger is suitable for chemical, petroleum, solvent, pharmaceutical, food, light industry, textile, metallurgy, steel rolling, coking and other industries.
The non detachable spiral plate heat exchanger is designed according to the basic parameters and dimensions of the standard. It has the advantages of simple manufacturing, low cost, small size and good heat transfer performance, but it also has its disadvantages, such as not being able to carry out mechanical cleaning, and it is difficult to repair when broken. The user should select specific equipment according to the actual situation of the project to make it effective. |
|
