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产品展示  
 设备 >> 水电解制氢设备 >> 制氢电解槽、Hydrogen electrolyzer
 
  
产品编号:
92216222016
产品名称:
制氢电解槽、Hydrogen electrolyzer
规  格:
2-600
产品备注:
水电解电解槽,制氢电解槽、Water electrolysis cell, hydrogen electrolyzer
产品类别:
设备
 
产品说明  

          
    制氢电解槽将水分解成氢和氧. 电解槽由若干个小室组成,每个小室都是由极板、付极网、隔膜垫片组成。
一、现场安全技术措施
1现场所有工作人员的着装,工器具的使用均应符合安规的要求
2将运行设备与检修设备进行隔离,将整流柜断电。
3.进行检修工作时应每隔二小时,测量检修工作区域内空气中的氢含量。
4在进行除油工作时,应尽量在室外进行,如必须在室内进行,则空气中丙酮量不得超过400mg/m3。
5检修工器具、材料、备品配件摆放整齐,检修现场“三不落地。
二、大修前备品件要求
1极板垫片外部光滑无划痕,无任何杂物附在上面。垫片严整均匀,无裂纹、弯曲现象。
2测量单片垫片厚度尺寸差值不许超过0.20mm,50片累计偏差不能超过0.50mm。
3定位销孔尺寸偏差不能超过0.5mm。
4气液孔道严整无毛刺。  
5石棉布的密度为每10*10cm2经线为138根,纬线为174根,经纬线纺织均匀,无线头及断裂。
6极框密封线良好,无污物,无穿透横纹,无大面积变形现象。
7极板表面无锈蚀产物,镍层完好无损,密封线无穿透横纹,干净无污物。
8盘形弹簧无变形,金相检查无裂纹。
三、准备和检查
1将电解槽的碱液抽回碱箱,并用大量的除盐水进行冲洗,直至出水澄清透明为止。
2检查制氢系统各阀门开关及渗漏。
3检清洗极柜,极板,主极楹,石棉布等部件
4检查紧固螺栓,螺帽及盘形弹簧
5记录主极板四点间距及蝶形弹簧高度。
6由正极向负极在每个极框上按顺序打出字码号。
7清理电解槽外部积碱并在渗碱处做好标记。
8卸开所有的连接法兰及与电解槽相连的各种管道附件,做9好标记,管口用布包好。
10将四根双头螺栓均匀依次松开。
11抽出上部一根螺栓并取下盘形弹簧组。
12按序号依次取出极框、极板。
13所有卸下的极框和极板,应放在木板上,不得叠放以防止结合面损伤和零件变形。
四、电解槽检修工艺及检修质量
1. 将极板上的污物用铜丝刷刷净并用除盐水冲洗
2. 检查极板阳极的腐蚀情况及阴极的锈蚀情况
3. 检查并清理密封线,清理时只许用铜丝刷或木制工具
1. 极板与附加板应连接牢固,无松动
4. 极板阳极侧镀镍无严重脱落或起皮现象
5. 极板密封线内无杂物,无穿透性横纹
6. 极板密封面不严度不准超过0.2mm
极框
1.用除盐水冲洗极框及石棉布的污物,并用软毛刷刷洗
2. 检查导气管和碱液孔道
3. 清理极框密封线,清理时只许用铜丝刷或木制工具
4. 检查石棉布情况并做透气实验,如不合格应更换
5. 极框的密封线无污物,无穿透性横纹
6. 极框的开口环到位,垫块牢固,无松动
7. 石棉布经透光实验后无透光点,无裂纹和松动现象
8. 极框导气孔及碱液孔道无污物堵塞
五,电解槽附件
1.清洗拉紧螺栓及螺母的丝扣,除去锈蚀, 拉紧螺栓螺纹良好无乱丝扣
2. 检查盘形弹簧是否变形, 盘型弹簧无变形,无裂纹。并做金相检查
3. 检查胶木绝缘垫圈,应无断裂
4. 检查氢、氧、碱孔道,应无污物
六、石棉布透光试验及安装
透光试验
1将装有石棉布的极板框放在透光圈桶上,圈桶内装有三只60W的灯泡,灯距布距离为400mm。
2进行实验时应在暗室检查。
3当发现有透光点时应先用记号笔做好标记,当石棉布的透光点直径大于0.2mm时,其点数在10点以上时应更换石棉布,小于此标准可进行修补。
更换
1 将极框平放在工作台上,均匀沿极框内径辅放好,开口环辅好放在石棉布上,将石棉布拉紧卡具安装在隔膜框上,并箍住开口环,对称紧固拉紧卡具上的螺栓,测量各拉紧卡具两侧开口环凸出部分的差值不超过0.5mm,则石棉布安装成功。
2沿极框内部修剪石棉布。
3卸下拉紧卡具,用木锤将片轻轻敲入开口环的开口内。
4 用钻头来清除氢、氧、碱孔道的石棉布碎片,保持其畅通。
七、电解槽的组装
1用水平尺检查绝缘垫片的水平情况,其高度不超过±2mm。
组装前将所有的部件用丙铜清洗。将极板沿极向移动80mm。
在主极板上的拉紧螺栓位置安装绝缘套,并装上拉紧螺栓,2调整下面的拉紧螺栓的水平位置,其水平偏差不超过2mm。
3将六个定位销安装在主阴极板上,并在上面挂上极板垫片,然后安装极框 ,安装时将开口环侧对向主阴极板。
4将极框、极板、中间极框按照拆卸时编号全部安装好,安装时不许任何杂物落入电解槽内部 。
将拉紧螺栓穿入并套好螺片。
八、电解槽紧固
电解槽热紧
1从电解槽一端的氢氧沟孔内通入0.1—0.15MPa的蒸汽,由碱液入口管排出进行加热,加热必须连续不断地进行。加热开始每隔2小时均匀拧紧电解槽螺栓,每次紧固螺栓的紧进尺寸差量最大不超过1mm。
2在紧固螺栓的过程中,盘形弹簧的压缩量不能大于4mm,测量两主极板间距四个角差不大于0.1mm。
3加热约经过30—40小时停止,再紧固1—2次螺栓,待电解槽冷却后面紧固一次,但紧固力距不大于4400kgf/m。
4电解紧固后两主极板尺寸应与拆卸之前相等或最后二次紧固尺寸稳定不变时即合格。
冷电解槽紧
1电解槽冷紧可在电解槽冷态下直接拧紧螺栓,但紧固时间与热紧相同。
2电解槽每条螺栓负载达到4400kgf/m时,要对电解槽进行水压试验。
九、电解槽的水压试验
1电解槽冷却后要进行水压试验,先将水充满,逐渐将压力从0.8MPa提到1.2MPa,经过10分钟后,如压力不下降,再将压力降到1.0MPa进行检查,若发现局部渗漏,可再紧一次螺栓,水压试验合格后,如电解槽不启动运行,应向电解槽内充满10%的氢氧化钾溶液以防生锈。
十、电解槽的装配工艺要点
1电解槽的装配采用垂直叠装的方式,电解槽极板数量众多,,准确定位是关键,否则不可避免要扭曲。
2校准装配底座,制作定位监视器,保证叠装过程的定位正确。
3采用电动液压技术,同时用多只液位拉伸器,对角进行压紧工作保证各部位受力均匀。
4使用专业的工具,监测各个绝缘密封垫片和极板受力情况。避免出现受力不均匀现象。影响电解槽密封和使用寿命。
5 电解槽采用多条拉紧螺栓紧固,垫片受力更均匀。
6 电解槽经过多道工艺和外观检查后,进行压力和密封检查。
7 经过质检部门检验合格后,按照公司标准包装入库。
 
水电解制氢
 
 
 
      声明:本文是经验总结, 难免有不足之处,仅供交流参考,不能当做电解槽维修的指导性文件。否则后果自负。热诚欢迎各界朋友交流指导。技术顾问:13812683169
 

Hydrogen electrolyzer splits water into hydrogen and oxygen. Electrolyzer by a number of small chambers, each chamber is made paddles, net pay very, diaphragm gasket composition.

First, on-site technical safety measures
Dress all staff 1 site, using tools and instruments shall comply with the safety requirements
2 will run the equipment and maintenance of equipment to isolate the power rectifier cabinet.
3. The maintenance work should be carried out every two hours, measured in the area of ​​maintenance work in the air hydrogen content.
4 during the degreasing operation, should be in the outdoors, such as must be carried out indoors, the air volume of acetone should not exceed 400mg / m3.
5 maintenance of industrial equipment, materials, spare parts neatly overhaul sites "three no landing.
Second, before the overhaul of spare parts requirements
1 spacer plate outside smooth no scratches, no debris attached to them. Gasket rigorous uniformity, no cracks, bending phenomenon.
2 shim thickness measuring chip size difference must not exceed 0.20mm, 50 Pian cumulative deviation should not exceed 0.50mm.
3 dowel hole size deviation should not exceed 0.5mm.
4 gas-liquid tunnel rigorous burr.
5 asbestos cloth density 10 * 10cm2 per warp threads 138, 174 for the weft, warp and weft textile uniform, radio head and fracture.
6-pole cable box sealed well, no dirt, no penetration stripes, no large-scale deformation phenomena.
7 plate surface without corrosion products, nickel layer intact, no penetration sealing line stripes, clean and free of dirt.
8 spring no distortion, no cracks metallographic examination.
Third, the preparation and examination
1 electrolyzer withdraw alkali lye tank, and with plenty of demineralized water is flushed until the water is clear and transparent so far.
Each valve switching and leakage 2 Check the hydrogen production system.
3 pole inspection cleaning cabinet, plate, main pole Ying, asbestos cloth and other components
4 Check the fastening bolts, nuts and disc springs
5 record four main plate spacing and height of the spring butterfly.
6 from the positive to the negative electrode in order to play word number on each pole frame.
7 to clean the external cell product base and make a mark at the base of the seepage.
8 breaking all connections and all kinds of pipe fittings and flanges attached to the cell, do good marker 9, nozzle with a cloth.
10 The four stud bolts evenly in turn release.
11 out of the upper portion of a bolt and remove the disc spring set.
No. 12 followed by unpacking boxes, plates.
13 Remove all pole frame and plate, should be placed on the board can not be stacked in order to prevent the joint surface damage and deformation of parts.
Fourth, the process of cell repair and overhaul quality
1. The dirt on the plates with a copper wire brush and rinse with clean demineralized water
2. Check the plate corrosion anode and cathode corrosion
3. Check and clean sealing line, the clean-up can only use a brass brush or wooden tools
1 plate and the plate should be connected securely attached, no loose
4. nickel anode side plate without serious loss or peeling phenomenon
5. The inner sealing plate line no debris, no penetrating stripes
6. lax plate sealing surface of no more than 0.2mm
Pole frame
1. washed with brine pole frame and asbestos cloth dirt removed, and scrub with a soft brush
2. Check the airway and lye channels
3. Clean pole box seal lines, the clean-up can only use a brass brush or wooden tools
4. Check breathable asbestos cloth case and do experiments, such as failure should be replaced
5. The sealing line pole frame No dirt, no penetrating stripes
6. The pole ring opening frame in place, pads firm, without loose
7. After translucent stone cotton experiment without translucent spots, no cracks and loosening
8. pole frame stomatal conductance and lye channels without clogging dirt
Fifth, cell attachment
1. Clean threaded tightening bolts and nuts, remove rust, tighten the threaded bolt thread good no mess
2. Check whether the deformation of the disc-shaped spring, the disc springs no distortion, no cracks. And metallographic examination
3. Check bakelite insulating gasket should be no break
4. Check the hydrogen, oxygen, alkali channels should be free from contamination
Sixth, stone cotton light test and installation
Light test
1 pole frame containing asbestos cloth placed through the aperture barrel, barrel ring containing three 60W bulbs, light from the cloth distance 400mm.
Experimental examination should be carried out in a dark room.
3 When the transparent point should be found and marked with a marker when translucent stone cloth dot diameter greater than 0.2mm, which points at 10 points or more should replace asbestos cloth, smaller than this standard can be repaired.
replace
1 pole box on the desk, a very uniform along the inner diameter of the auxiliary block away, and the split ring on the auxiliary good asbestos cloth, asbestos Brad tight fixtures mounted on the diaphragm box and hoop split ring, symmetrical tightening bolts fastening fixture on both sides of the tension measuring jig opening ring convex portion does not exceed the difference between 0.5mm, the asbestos cloth installation was successful.
2 pole along the interior trim box asbestos cloth.
3 Remove the tensioning fixtures, sheet lightly with a wooden hammer to knock in the opening split ring.
4 with a drill to remove hydrogen, oxygen, stone cotton base tunnel debris, to maintain its flow.
Seven cell assembly
Check the insulation spacer 1 level with spirit level, a height of not more than ± 2mm.
All parts before assembly cleaning C copper. The plates move along the pole to 80mm.
On the main board of the pole position tension bolts installed insulation sleeve and mounted on the tension bolts, following tightening bolts 2 Adjust the horizontal position, the horizontal deviation is less than 2mm.
3 The six locating pins mounted on the main cathode plate and top plate washer hung up, and then install the pole frame, the opening side of the ring to the main cathode plate during installation.
4-pole frame, plate, according to the intermediate pole box number when removing all installed, and not any debris falling into the cell interior installation.
The tension bolts penetrate and set a good conch slices.
Eight, cell fastening
Tight hot cell
1 from one end of the cell through the hole into the ditch hydroxide 0.1-0.15MPa steam discharged from the lye inlet tube is heated, the heating must be carried out continuously. Heating start every 2 hours evenly tighten bolts electrolyzer, the difference between the amount of each fastening bolt tight into the maximum size does not exceed 1mm.
2 In the process of tightening the bolt, the amount of compression of the disc-shaped spring is not greater than 4mm, measuring two main corners of the plate spacing is not more than 0.1mm.
3 heated for about 30-40 hours after stop, then tighten bolts 1-2 times, cooling behind the electrolytic cell to be tightened once, but no more than the tightening torque 4400kgf / m.
4 fastening two main electrolytic plate size should be equal to or before removing the last second fastening dimensional stability that is qualified unchanged.
Cold cell tight
1 cell cold spring directly tighten the bolts in the cell under cold, but hot tight tightening time and the same.
Each bolt load cell 2 reaches 4400kgf / m, for a pressure test of the electrolyzer.
Hydrostatic Test IX electrolyzer
After cooling, the electrolytic cell 1 to hydrostatic test, first filled with water, gradually reducing the pressure from 0.8MPa mentioned 1.2MPa, after 10 minutes, if the pressure does not drop, the pressure was reduced to 1.0MPa inspection, if found locally leakage, may once again tighten the bolt, after passing the test pressure, such as the cell is not up and running, should be within the electrolytic cell filled with 10% potassium hydroxide solution to prevent rusting.
Ten, the cell assembly process elements
1 cell assembly vertically stacked manner, a number of the cell plate number ,, accurate positioning is critical, otherwise inevitably distorted.
2 calibration assembly base, making positioning the monitor, ensure correct positioning stacked process.
3 The electro-hydraulic technology, but with more than just the level stretcher, diagonal carry out work to ensure that all parts of the pressing force uniform.
4 Use professional tools to monitor various gaskets and insulation plate stress situation. Avoid discontinuity phenomenon. Effect of cell sealing and service life.
5 cell using a plurality of tension bolts, gaskets and more uniform force.
After 6 cell multi-channel technology and visual inspection, checking and sealing pressure.
7 After the inspection and quality inspection departments, according to the company standard packaging and storage.


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