CN107099821B - Full sealing device for upper part of prebaked anode aluminum electrolytic cell - Google Patents
Full sealing device for upper part of prebaked anode aluminum electrolytic cell Download PDFInfo
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- CN107099821B CN107099821B CN201710484545.8A CN201710484545A CN107099821B CN 107099821 B CN107099821 B CN 107099821B CN 201710484545 A CN201710484545 A CN 201710484545A CN 107099821 B CN107099821 B CN 107099821B
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- 238000007789 sealing Methods 0.000 title claims abstract description 57
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 39
- 239000000779 smoke Substances 0.000 claims abstract description 45
- 238000009413 insulation Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003546 flue gas Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000746 purification Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/16—Electric current supply devices, e.g. bus bars
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/22—Collecting emitted gases
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
Description
技术领域technical field
本发明涉及铝电解技术领域，具体为一种预焙阳极铝电解槽上部全密封装置。The invention relates to the technical field of aluminum electrolysis, in particular to a full sealing device for the upper part of a prebaked anode aluminum electrolytic cell.
背景技术Background technique
铝电解过程中会产生大量的含HF气体的有害烟气和粉尘，为了防止有害烟气的任意排放通常会对电解槽的阳极系统进行密封，烟气通过排烟通道被抽入净化系统集中处理。A large amount of harmful fume and dust containing HF gas will be produced in the process of aluminum electrolysis. In order to prevent the random discharge of harmful fume, the anode system of the electrolytic cell is usually sealed, and the flue gas is drawn into the purification system through the smoke exhaust channel for centralized treatment.
因此，密封装置是铝电解槽非常重要的组成部分，现有的预焙阳极铝电解槽密封装置大多数是通过铝合金小槽罩，下部搁置于电解槽沿板上，上部扣在挡烟板上，阳极导杆从挡烟板上的U型槽穿出，槽罩的上沿板与阳极导杆的外侧面接触，若干块槽罩靠拢而形成密封结构。这种密封结构的缺点是：a)互相靠拢的槽罩受热变形，槽罩边缘无法靠拢而漏出电解烟气；b)阳极导杆穿过的U型槽缝隙也大量漏出电解烟气。所以，现有预焙阳极铝电解槽实际上处于半密闭状态，大量有害烟气并带着粉尘漏出，造成无组织排放，既造成原材物料损失，又造成环境严重污染，不仅伤害工人身体，而且带来严重社会问题。Therefore, the sealing device is a very important part of the aluminum electrolytic cell. Most of the existing prebaked anode aluminum electrolytic cell sealing devices are small aluminum alloy cell covers. The lower part rests on the edge of the electrolytic cell, and the upper part is buckled on the smoke baffle. The anode guide rod passes through the U-shaped groove on the smoke baffle. The disadvantages of this sealing structure are: a) the tank covers that are close to each other are heated and deformed, and the edges of the tank covers cannot be moved closer to leak electrolytic fume; b) a large amount of electrolytic fume is also leaked from the gap of the U-shaped slot through which the anode guide rod passes. Therefore, the existing prebaked anode aluminum electrolytic cells are actually in a semi-closed state, and a large amount of harmful smoke and dust leak out, resulting in unorganized emissions, which not only cause the loss of raw materials, but also cause serious environmental pollution, which not only harms the health of workers, but also brings serious social problems.
现有电解槽不能全密闭的根源在于阳极大母线系统设计不合理：两根阳极大母线被设计成中间多处连接套在上部承重桁架两侧的框架，其既承担向阳极供电的功能，又起着固定阳极导杆并承重阳极的作用。由于阳极随着生产进行不断消耗，为了保持阳极极距不变，阳极和阳极大母线需要不断往下移动。当阳极大母线降到下限位时，又必须通过抬阳极大母线框架将所有阳极临时固定，并打开阳极导杆固定卡具，带电(利用阳极导杆与阳极大母线摩擦接触导电)上抬阳极大母线。当抬到上限位时，再卡紧阳极导杆并移走抬母线框架，这一过程中阳极导杆与阳极大母线之间很可能打火，损坏阳极导杆和阳极大母线，具有非常大的危险性，所以必须置于操作人员的严密监视下敞开操作，这是预焙阳极铝电解槽不能全密封的根源。The reason why the existing electrolyzer cannot be completely sealed is that the design of the anode busbar system is unreasonable: the two anode busbars are designed as a frame with multiple connections in the middle and sleeved on both sides of the upper load-bearing truss, which not only undertakes the function of supplying power to the anode, but also plays the role of fixing the anode guide rod and supporting the anode. Since the anode is continuously consumed along with the production, in order to keep the anode pole distance constant, the anode and the anode busbar need to move down continuously. When the anode bus bar falls to the lower limit, all the anodes must be temporarily fixed by lifting the anode bus bar frame, and the anode guide rod fixing fixture is opened, and the anode bus bar is lifted up when it is charged (use the anode guide bar to conduct friction with the anode bus bar). When lifting to the upper limit, clamp the anode guide rod and remove the frame for lifting the busbar. In this process, the anode guide rod and the anode busbar are likely to catch fire, damaging the anode guide rod and the anode busbar, which is very dangerous. Therefore, it must be opened and operated under the close supervision of the operator. This is the root cause of the prebaked anode aluminum electrolytic cell not being fully sealed.
发明内容Contents of the invention
针对现有技术中的缺陷，本发明提供一种预焙阳极铝电解槽上部全密封装置，其将电解槽上部结构完全密封、将电解铝产生的烟气和粉尘几乎全部收集并通过净化系统进行高效净化和回收、实现电解铝的清洁生产，同时提高电解槽的整体保温性能。Aiming at the defects in the prior art, the present invention provides a fully sealing device for the upper part of the prebaked anode aluminum electrolytic cell, which completely seals the upper structure of the electrolytic cell, collects almost all the smoke and dust generated by electrolytic aluminum, and performs efficient purification and recovery through the purification system, realizes the clean production of electrolytic aluminum, and improves the overall heat preservation performance of the electrolytic cell at the same time.
技术方案如下：The technical solution is as follows:
一种预焙阳极铝电解槽上部全密封装置，包括阳极导杆、阳极大母线、与阳极大母线相连的立柱母线，所述阳极导杆的下端安装有阳极系统，其关键在于：所述阳极大母线为一根，固定设置在电解槽顶部中心，所述阳极大母线的左右两端还对称布置有铝小母线，所述铝小母线与阳极导杆上端相连，实现电流向电解槽的阳极系统供电；A prebaked anode aluminum electrolytic cell upper full sealing device, comprising an anode guide rod, an anode busbar, and a column busbar connected to the anode busbar. An anode system is installed at the lower end of the anode guide rod. The key point is that the anode busbar is one and is fixedly arranged in the center of the top of the electrolytic tank. The left and right ends of the anode busbar are also symmetrically arranged with aluminum small busbars.
所述电解槽上方还设置有密封罩，所述密封罩包括端面罩板，侧面外罩，安装在电解槽上方承重桁架上的顶部挡烟板、侧部密封板、底部挡烟板；所述顶部挡烟板位于桁架上部，侧部密封板位于桁架侧部，底部挡烟板位于桁架底部且与端头门横梁固定连接；A sealing cover is also arranged above the electrolytic cell, and the sealing cover includes an end face cover plate, a side cover, a top smoke baffle, a side sealing plate, and a bottom smoke baffle installed on the load-bearing truss above the electrolytic cell; the top smoke baffle is located on the upper part of the truss, the side sealing plate is located on the side of the truss, and the bottom smoke baffle is located at the bottom of the truss and is fixedly connected to the end door beam;
所述端面罩板设置在电解槽上部结构的两端，其分别与侧部密封板端部、顶部挡烟板端部、端头门立柱焊接，与端头门一起将电解槽的两个端头密封；所述侧面外罩设置在电解槽上部结构两侧，其上沿固定在顶部挡烟板上，下沿固定在电解槽沿板上，两端与所述端面罩板固定，将电解槽上部结构侧面密封。The end cover plates are arranged at both ends of the upper structure of the electrolytic cell, which are respectively welded with the end of the side sealing plate, the end of the top smoke baffle plate, and the end door column, and seal the two ends of the electrolytic cell together with the end door; the side covers are arranged on both sides of the upper structure of the electrolytic cell, the upper edge of which is fixed on the top smoke baffle plate, the lower edge is fixed on the edge plate of the electrolytic cell, and the two ends are fixed with the end cover plate to seal the sides of the upper structure of the electrolytic cell.
所述顶部挡烟板与底部挡烟板相互平行，且均与侧部密封板垂直，所述顶部挡烟板、侧部密封板、底部挡烟板、端头门、端面罩板、侧面外罩围成一个马鞍型密封腔将电解槽上部结构全密封。The top smoke baffle and the bottom smoke baffle are parallel to each other, and both are perpendicular to the side sealing plate. The top smoke baffle, side sealing plate, bottom smoke baffle, end door, end face cover, and side cover form a saddle-shaped sealed cavity to completely seal the upper structure of the electrolytic cell.
通过上述技术方案可知，本发明将一根阳极大母线固定设置在电解槽顶部中心，所述阳极大母线的左右两端还对称布置有铝小母线，所述铝小母线与阳极导杆上端相连，实现电流向电解槽的阳极系统供电。采用这种固定的阳极大母线结构与传统阳极大母线结构相比，消除了抬带电的阳极大母线框架。基于此，在电解槽上方设置结构合理的密封罩将电解槽上部结构完全密封，从而将电解铝产生的烟气和粉尘几乎全部收集并通过净化系统进行高效净化和回收、实现电解铝的清洁生产，由于热气体不外泄，减少了热损失，同时也提高电解槽的整体保温性能，维持电解槽低压运行时的热平衡。It can be seen from the above technical solution that in the present invention, a large anode busbar is fixedly arranged at the center of the top of the electrolytic cell, and the left and right ends of the large anode busbar are also symmetrically arranged with small aluminum busbars, and the small aluminum busbar is connected to the upper end of the anode guide rod to realize the current supply to the anode system of the electrolytic cell. Compared with the traditional anode busbar structure, the fixed anode busbar structure eliminates the anode busbar frame that carries the charge. Based on this, a well-structured sealing cover is set above the electrolytic cell to completely seal the upper structure of the electrolytic cell, so that almost all the flue gas and dust generated by electrolytic aluminum are collected and efficiently purified and recycled through the purification system to achieve clean production of electrolytic aluminum. Since the hot gas does not leak out, heat loss is reduced. At the same time, the overall thermal insulation performance of the electrolytic cell is improved, and the heat balance of the electrolytic cell is maintained during low-voltage operation.
进一步的，在所述顶部挡烟板上开设有与阳极小母线形状相适配的小孔，所述阳极小母线穿过该小孔与设置在密封罩内部的阳极导杆连接，所述阳极小母线与小孔接触处均设有密封圈。Further, a small hole matching the shape of the small anode busbar is opened on the top smoke baffle, and the small anode busbar passes through the small hole to connect with the anode guide rod arranged inside the sealing cover, and a sealing ring is provided at the contact between the small anode busbar and the small hole.
进一步的，所述侧面外罩上沿通过卡紧弹簧固定在顶部挡烟板上，下沿通过卡紧弹簧固定在电解槽沿板上。Further, the upper edge of the side cover is fixed on the top smoke baffle through a clamping spring, and the lower edge is fixed on the edge plate of the electrolytic cell through a clamping spring.
进一步的，在所述侧面外罩上设有保温棉，加强保温。Further, thermal insulation cotton is provided on the side outer cover to enhance thermal insulation.
进一步的，所述侧面外罩由若干个侧面外罩单元构成，所述侧面外罩单元之间过渡重叠布置，交接处设密封条。Further, the side cover is composed of several side cover units, and the side cover units are arranged in a transitional overlapping manner, and a sealing strip is provided at the junction.
进一步的，所述侧面外罩与顶部挡烟板、端面罩板、电解槽沿板的交接处均设有密封条。Further, sealing strips are provided at the joints between the side cover and the top smoke baffle plate, end face cover plate, and electrolytic tank edge plate.
由于采用了上述结构，本发明具有如下有益效果：Owing to adopting above-mentioned structure, the present invention has following beneficial effect:
1、本发明将一根阳极大母线固定设置在电解槽顶部中心，所述阳极大母线的左右两端还对称布置有铝小母线，所述铝小母线与设置在密封罩内的阳极导杆上端相连，实现电流向电解槽的阳极系统供电。采用这种固定的阳极大母线结构与传统阳极大母线结构相比，消除了抬带电的阳极大母线框架。基于该阳极大母线的结构，在电解槽上方设置结构合理的密封罩将电解槽上部结构完全密封，电解产生的烟气和粉尘几乎全部被收集并通过净化系统进行高效净化和回收、有害气体不会外泄，实现电解铝的清洁生产。因为阳极导杆整体被密闭在密封罩内，避免了传统阳极导杆周围缝隙漏气的问题。1. In the present invention, a large anode busbar is fixedly arranged at the center of the top of the electrolytic cell, and aluminum small busbars are symmetrically arranged at the left and right ends of the anode large busbar. The aluminum small busbar is connected to the upper end of the anode guide rod arranged in the sealing cover, so as to realize the power supply of current to the anode system of the electrolytic cell. Compared with the traditional anode busbar structure, the fixed anode busbar structure eliminates the anode busbar frame that carries the charge. Based on the structure of the large anode busbar, a well-structured sealing cover is set above the electrolytic cell to completely seal the upper structure of the electrolytic cell. Almost all the smoke and dust generated by electrolysis are collected and efficiently purified and recycled through the purification system. Harmful gases will not leak out, realizing the clean production of electrolytic aluminum. Because the anode guide rod is sealed in the sealed cover as a whole, the problem of air leakage in the gaps around the traditional anode guide rod is avoided.
2、由于密封罩将电解槽上部全密封，槽内热气体不外泄，消除了热气体带走的热损失，同时在密封罩的侧面外罩上加保温棉，减少热量损失，提高了电解槽的热效率，可降低铝电解能耗。2. Since the sealing cover completely seals the upper part of the electrolytic cell, the hot gas in the cell does not leak out, eliminating the heat loss taken away by the hot gas. At the same time, thermal insulation cotton is added to the side cover of the sealing cover to reduce heat loss, improve the thermal efficiency of the electrolytic cell, and reduce the energy consumption of aluminum electrolysis.
3、所述侧面外罩由若干个侧面外罩单元构成，所述侧面外罩单元之间过渡重叠布置，交接处设密封条，侧面外罩单元的移动采用天车吊运，每次换阳极只需吊开一块侧面外罩单元即可，采用这种结构，既避免了侧面外罩变形漏气，又方便阳极系统的更换。3. The side cover is composed of several side cover units. The side cover units are overlapped and arranged transitionally, and sealing strips are provided at the junctions. The movement of the side cover units is carried by a crane. Every time an anode is changed, only one side cover unit needs to be hoisted. This structure not only avoids deformation of the side cover and air leakage, but also facilitates the replacement of the anode system.
4、由于完全密封，电解铝产生的烟气和粉尘几乎全部收集并通过净化系统进行高效净化和回收利用，提高有用原料的回收率。4. Due to the complete sealing, almost all the smoke and dust generated by electrolytic aluminum are collected and efficiently purified and recycled through the purification system to improve the recovery rate of useful raw materials.
5、电解槽全密封后，相比于传统半密封，密封罩内烟气中的二氧化硫、二氧化碳浓度提高，有利于烟气脱硫和二氧化碳捕集。5. After the electrolytic cell is completely sealed, compared with the traditional semi-sealed, the concentration of sulfur dioxide and carbon dioxide in the flue gas in the sealed cover is increased, which is beneficial to flue gas desulfurization and carbon dioxide capture.
附图说明Description of drawings
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍。在所有附图中，类似的元件或部分一般由类似的附图标记标识。附图中，各元件或部分并不一定按照实际的比例绘制。In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments or the prior art. Throughout the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, elements or parts are not necessarily drawn in actual scale.
图1为本装置的结构图；Fig. 1 is the structural diagram of this device;
附图中：1-电解槽；2-阳极系统；3-下部卡紧弹簧；4-端头门立柱；5-端头门；6-端面罩板；7-侧面外罩；8-排烟通道；9-桁架；10-上部卡紧弹簧；11-底部挡烟板；12-侧部密封板；13-顶部挡烟板；14-密封条；15-铝小母线；16-阳极大母线；17-立柱母线。In the attached drawings: 1-electrolyzer; 2-anode system; 3-bottom clamping spring; 4-end door column; 5-end door; 6-end face cover; 7-side cover; line.
具体实施方式Detailed ways
下面结合附图对本发明的实施例作进一步详细说明。Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
在本实施例中，术语“上”“下”“左”“右”“前”“后”“上端”“下端”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造或操作，因此不能理解为对本发明的限制。In this embodiment, the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "upper end" and "lower end" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be construed as limiting the present invention.
如图1所示的预焙阳极铝电解槽上部全密封装置，包括阳极导杆18、阳极大母线16、与阳极大母线16相连的立柱母线17，所述阳极导杆18的下端安装有阳极系统2。所述阳极大母线16为一根，固定设置在电解槽顶部中心，所述阳极大母线16的左右两端还对称布置有铝小母线15，所述铝小母线15与阳极导杆18上端相连，实现电流向电解槽1的阳极系统2供电。The upper full sealing device of the prebaked anode aluminum electrolytic cell as shown in Figure 1 includes an anode guide rod 18, an anode bus bar 16, and a column bus bar 17 connected to the anode bus bar 16, and the anode system 2 is installed at the lower end of the anode guide bar 18. The anode large busbar 16 is one, and is fixedly arranged at the center of the top of the electrolytic cell. The left and right ends of the anode large busbar 16 are also symmetrically arranged with aluminum small busbars 15. The aluminum small busbar 15 is connected to the upper end of the anode guide rod 18 to realize the current supply to the anode system 2 of the electrolytic cell 1.
所述电解槽1上方还设置有密封罩，所述密封罩包括端面罩板6，侧面外罩7，安装在电解槽上方承重桁架9上的顶部挡烟板13、侧部密封板12、底部挡烟板11；所述顶部挡烟板13位于桁架9上部，侧部密封板12位于桁架9侧部，底部挡烟板11位于桁架9底部且与端头门5横梁固定连接。The top of the electrolytic cell 1 is also provided with a sealing cover, and the sealing cover includes an end face cover plate 6, a side cover 7, a top smoke baffle 13, a side sealing plate 12, and a bottom smoke baffle 11 installed on the load-bearing truss 9 above the electrolytic cell;
所述端面罩板6设置在电解槽1上部结构的两端，其分别与侧部密封板12端部、顶部挡烟板13端部、端头门立柱4焊接，与端头门5一起将电解槽的两个端头密封；所述侧面外罩7设置在电解槽1上部结构两侧，其上沿固定在顶部挡烟板13上，下沿固定在电解槽1沿板上，两端与所述端面罩板6固定，将电解槽上部结构侧面密封。The end cover 6 is arranged at both ends of the upper structure of the electrolytic cell 1, which are respectively welded with the end of the side sealing plate 12, the end of the top smoke shield 13, and the end door column 4, and seals the two ends of the electrolytic cell together with the end door 5; sealed.
所述顶部挡烟板13与底部挡烟板11相互平行，且均与侧部密封板12垂直，所述顶部挡烟板13、侧部密封板12、底部挡烟板11、端头门5、端面罩板6、侧面外罩7围成一个马鞍型密封腔将电解槽1上部结构完全密封，电解产生的烟气被完全密封在所述密封罩内，通过排烟通道8抽入烟气净化系统。The top smoke baffle 13 and the bottom smoke baffle 11 are parallel to each other, and both are perpendicular to the side sealing plate 12. The top smoke baffle 13, side sealing plate 12, bottom smoke baffle 11, end door 5, end face cover 6, and side cover 7 form a saddle-shaped sealed cavity to completely seal the upper structure of the electrolytic cell 1.
在所述顶部挡烟板13上开设有与阳极小母线15形状相适配的小孔，所述阳极小母线15穿过该小孔与设置在密封罩内部的阳极导杆18上端连接，所述阳极小母线15与小孔接触处均设有密封圈。所述侧面外罩7与顶部挡烟板13、端面罩板6、电解槽沿板的交接处均设有密封条。A small hole matching the shape of the anode small busbar 15 is opened on the top smoke baffle 13, and the anode small busbar 15 passes through the small hole to connect with the upper end of the anode guide rod 18 arranged inside the sealing cover, and a sealing ring is provided at the contact between the anode small busbar 15 and the small hole. Sealing strips are provided at the joints between the side cover 7 and the top smoke baffle 13 , the end face cover 6 , and the electrolyzer along the plate.
所述侧面外罩7上沿通过上部卡紧弹簧10固定在顶部挡烟板13上，下沿通过下部卡紧弹簧3固定在电解槽沿板上。The upper edge of the side cover 7 is fixed on the top smoke shield 13 by the upper clamping spring 10 , and the lower edge is fixed on the edge plate of the electrolytic cell by the lower clamping spring 3 .
在所述侧面外罩7上还设有保温棉，加强保温。所述侧面外罩由若干个侧面外罩单元构成，所述侧面外罩单元之间过渡重叠布置，交接处设密封条。侧面外罩单元的移动采用天车吊运，每次更换阳极只需吊开一块侧面外罩单元即可。Also be provided with thermal insulation cotton on described side cover 7, strengthen thermal insulation. The side cover is composed of several side cover units, and the side cover units are arranged in a transitional overlapping manner, and a sealing strip is provided at the junction. The movement of the side cover unit is carried by the crane, and only one side cover unit needs to be hoisted every time the anode is replaced.
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解；其依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明实施例技术方案的范围，其均应涵盖在本发明的权利要求和说明书的范围当中。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand; it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention, which should be included in the scope of the claims and description of the present invention.
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