CN115750437A - A gas fan air inlet sealing device and method - Google Patents
A gas fan air inlet sealing device and method Download PDFInfo
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Abstract
本发明涉及密封技术领域，尤其是涉及一种煤气通风机进风口密封装置及方法。所述装置，包括第一钢圈，设置在通风机的机壳侧板上；第二钢圈，设置在通风机的进风口法兰处；第一钢圈和第二钢圈通过加厚法兰和螺栓连接，第一钢圈和第二钢圈之间形成密封结构，阻止气体外泄。本发明能够有效阻止气体外泄漏，同时，密封槽结构的设计实现气体“零泄漏”。该结构将连接法兰不再与煤气接触，避免了从螺栓孔处泄漏的风险。
The invention relates to the field of sealing technology, in particular to a sealing device and method for an air inlet of a gas fan. The device includes a first steel ring, which is arranged on the side plate of the fan casing; a second steel ring, which is arranged at the air inlet flange of the fan; the first steel ring and the second steel ring are thickened by thickening method. The flange and the bolt are connected, and a sealing structure is formed between the first steel ring and the second steel ring to prevent gas from leaking out. The invention can effectively prevent gas from leaking out, and at the same time, the design of the sealing groove structure realizes "zero leakage" of gas. This structure prevents the connecting flange from being in contact with the gas, avoiding the risk of leakage from the bolt holes.
Description
技术领域technical field
本发明涉及密封技术领域，尤其是涉及一种煤气通风机进风口密封装置及方法。The invention relates to the field of sealing technology, in particular to a sealing device and method for an air inlet of a gas ventilator.
背景技术Background technique
煤气是由多种可燃成分组成的一种气体燃料，可分为天然煤气和人工煤气两大类。人工煤气主要是利用固体或液体含碳燃料热分解或气化后获得的，常见有焦炉煤气、高炉煤气、发生炉煤气、油煤气等。煤气的用途也非常广泛，可作为民用、工业燃料，也是用于合成氨、合成石油、氢气制造等的重要化工原料。Coal gas is a gaseous fuel composed of various combustible components, which can be divided into two categories: natural gas and artificial gas. Artificial gas is mainly obtained by thermal decomposition or gasification of solid or liquid carbon-containing fuels, such as coke oven gas, blast furnace gas, producer gas, oil gas, etc. Coal gas also has a wide range of uses. It can be used as civil and industrial fuel, and is also an important chemical raw material for synthetic ammonia, synthetic petroleum, and hydrogen production.
煤气风机作为输送设备普遍用于煤气系统中，且因煤气应用行业的广泛性、煤气种类的多样性、使用工况的复杂性对煤气风机要求较高，需适用于多种煤气发生炉、高炉、焦炉、转炉煤气的加压以及输送，且满足在各种防爆要求较高场所的布置要求。煤气含有大量的一氧化碳，毒性很大且易燃易爆，在输送过程中必须严防泄露，在实际生产制造过程中发现通风机进风口与机壳连接处容易发生泄露，需要解决通风机进风口密封的问题。Gas fans are widely used in gas systems as conveying equipment, and due to the wide range of gas application industries, the diversity of gas types, and the complexity of operating conditions, the gas fans have high requirements, and must be suitable for various gas generators and blast furnaces , Coke oven, converter gas pressurization and transportation, and meet the layout requirements in various places with high explosion-proof requirements. Gas contains a large amount of carbon monoxide, which is highly toxic, flammable and explosive. During the transportation process, leakage must be strictly prevented. During the actual manufacturing process, it is found that the connection between the air inlet of the fan and the casing is prone to leakage, and the sealing of the air inlet of the fan needs to be solved. The problem.
现有技术中，通风机主要包含进风口、机壳和叶轮三大部件，进风口与机壳之间通过法兰连接，为了防止气体泄漏，在进风口和机壳之间增加密封垫进行密封，但是在连接螺栓孔处仍然存在密封不严的现象，高压气体从螺栓孔处泄漏出，对于输送空气、烟气等无毒、不易燃的气体而言，该密封结构完全满足使用要求，但是，如果用于输送煤气等易燃易爆且有毒的气体时，密封处要做到“零泄漏”，该密封结构已无法满足使用要求，必须寻求一种新型的进风口密封方法及结构。In the prior art, the ventilator mainly includes three major parts: the air inlet, the casing and the impeller. The air inlet and the casing are connected by flanges. In order to prevent gas leakage, a gasket is added between the air inlet and the casing for sealing. , but there is still a phenomenon of poor sealing at the connecting bolt holes, and high-pressure gas leaks from the bolt holes. For the transportation of non-toxic and non-flammable gases such as air and smoke, the sealing structure fully meets the requirements for use, but If it is used to transport flammable, explosive and toxic gases such as gas, the seal must achieve "zero leakage".
发明内容Contents of the invention
为了上述提到的问题，本发明提供一种煤气通风机进风口密封装置及方法。该密封装置及方法很好的解决了通风机进风口密封的问题，该结构简单、密封效果可靠、安装方便，可达到“零泄漏”。In order to solve the problems mentioned above, the present invention provides a sealing device and method for an air inlet of a gas ventilator. The sealing device and method well solve the problem of sealing the air inlet of the ventilator, the structure is simple, the sealing effect is reliable, the installation is convenient, and "zero leakage" can be achieved.
第一方面，本发明提供的一种煤气通风机进风口密封装置，采用如下的技术方案：In the first aspect, the sealing device for the air inlet of a gas fan provided by the present invention adopts the following technical scheme:
一种煤气通风机进风口密封装置，包括：A gas fan air inlet sealing device, comprising:
第一钢圈，设置在通风机的机壳侧板上；The first steel ring is arranged on the casing side plate of the ventilator;
第二钢圈，设置在通风机的进风口法兰处；The second steel ring is arranged at the air inlet flange of the fan;
第一钢圈和第二钢圈通过加厚法兰和螺栓连接，第一钢圈和第二钢圈之间形成密封结构，阻止气体外泄。The first steel ring and the second steel ring are connected by thickened flanges and bolts, and a sealing structure is formed between the first steel ring and the second steel ring to prevent gas from leaking out.
进一步地，所述加厚法兰包括第一加厚法兰，设置在第一钢圈的外部。Further, the thickened flange includes a first thickened flange arranged on the outside of the first steel ring.
进一步地，所述加厚法兰还包括第二加厚法兰，设置在第二钢圈的外部。Further, the thickened flange also includes a second thickened flange, which is arranged on the outside of the second steel ring.
进一步地，所述第一加厚法兰和第二加厚法兰通过螺栓连接。Further, the first thickened flange and the second thickened flange are connected by bolts.
进一步地，所述第二加厚法兰上，和第一加厚法兰的密封面处设置有密封槽。进一步地，所述密封槽内设置有密封圈。Further, sealing grooves are provided on the second thickened flange and at the sealing surface of the first thickened flange. Further, a sealing ring is arranged in the sealing groove.
进一步地，所述第一钢圈和通风机机壳侧板通过焊接连接。Further, the first steel ring and the side plate of the fan casing are connected by welding.
进一步地，所述第二钢圈和通风机的进风口法兰处通过焊接连接。Further, the second steel ring is connected to the air inlet flange of the fan by welding.
第二方面，一种煤气通风机进风口密封方法，包括：In the second aspect, a method for sealing the air inlet of a gas ventilator, comprising:
通过设置在通风机进风口处设置第一钢圈和第二钢圈，第一钢圈和第二钢圈之间形成密封结构，阻挡气体外泄；By setting the first steel ring and the second steel ring at the air inlet of the fan, a sealing structure is formed between the first steel ring and the second steel ring to prevent gas from leaking out;
通过在第一钢圈上设置第一加厚法兰，第二钢圈上设置第二加厚法兰，第一加厚法兰和第二加厚法兰通过螺栓连接。The first thickened flange is arranged on the first steel ring, the second thickened flange is arranged on the second steel ring, and the first thickened flange and the second thickened flange are connected by bolts.
进一步地，通过在第二加厚法兰上，与第一加厚法兰密封面处设置密封槽，密封槽内设置密封圈，防止气体外泄，通过设置密封圈，能随着气体压力的增加自动提高密封性能。Further, by setting a sealing groove on the second thickened flange and the sealing surface of the first thickened flange, a sealing ring is arranged in the sealing groove to prevent gas from leaking out. Adding automatically improves sealing performance.
综上所述，本发明具有如下的有益技术效果：In summary, the present invention has the following beneficial technical effects:
本发明能够有效阻止气体外泄漏，同时，密封槽结构的设计实现气体“零泄漏”。该结构将连接法兰不再与煤气接触，避免了从螺栓孔处泄漏的风险；The invention can effectively prevent gas from leaking out, and at the same time, the design of the sealing groove structure realizes "zero leakage" of gas. This structure makes the connecting flange no longer in contact with the gas, avoiding the risk of leakage from the bolt holes;
本发明的技术方案既能满足输送特殊气体比如煤气等有毒、易燃、易爆气体，也考虑了安装维护方便方面，还具有良好的生产制造工艺，零部件通用性和互换性强，便于批量生产的优点。The technical solution of the invention can not only meet the requirements of transporting special gases such as gas and other toxic, flammable and explosive gases, but also considers the convenience of installation and maintenance, and also has a good manufacturing process, and the parts have strong versatility and interchangeability, which is convenient Advantages of mass production.
附图说明Description of drawings
图1是本发明实施例的一种煤气通风机进风口密封装置的整体结构示意图。Fig. 1 is a schematic diagram of the overall structure of a sealing device for an air inlet of a gas fan according to an embodiment of the present invention.
图2是本发明实施例的一种煤气通风机进风口密封装置中的Ⅱ部放大示意图。Fig. 2 is an enlarged schematic diagram of part II of a sealing device for an air inlet of a gas fan according to an embodiment of the present invention.
图3是本发明实施例的现有密封结构的示意图。Fig. 3 is a schematic diagram of an existing sealing structure according to an embodiment of the present invention.
其中，1、机壳；2、叶轮；3、进风口；4、第一钢圈；5、第二钢圈；6、第一加厚法兰；7、第二加厚法兰；8、螺栓；9、密封圈；10、进风口法兰；11、连接螺栓；12、密封垫；13、机壳盖板；14、机壳加强法兰。Among them, 1. casing; 2. impeller; 3. air inlet; 4. first steel ring; 5. second steel ring; 6. first thickened flange; 7. second thickened flange; 8. Bolt; 9. Seal ring; 10. Air inlet flange; 11. Connecting bolt; 12. Gasket; 13. Shell cover plate; 14. Shell reinforcement flange.
具体实施方式Detailed ways
以下结合附图对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
实施例1Example 1
参照图1，本实施例的一种煤气通风机进风口密封装置，包括：With reference to Fig. 1, a kind of gas ventilator air inlet sealing device of the present embodiment comprises:
第一钢圈4，设置在通风机的机壳侧板上；第二钢圈5，设置在通风机的进风口法兰处；第一钢圈4和第二钢圈5通过加厚法兰和螺栓8连接，第一钢圈4和第二钢圈5之间形成密封结构，阻止气体外泄。加厚法兰包括第一加厚法兰6，设置在第一钢圈4的外部。加厚法兰还包括第二加厚法兰7，设置在第二钢圈5的外部。第一加厚法兰6和第二加厚法兰7通过螺栓8连接。第二加厚法兰7上，和第一加厚法兰6的密封面处设置有密封槽。进一步地，所述密封槽内设置有密封圈9。第一钢圈4和通风机机壳侧板通过焊接连接。第二钢圈5和通风机的进风口法兰处通过焊接连接。The first steel ring 4 is arranged on the side plate of the fan casing; the
具体的，specific,
如图3所示，现有的通风机主要包含3进风口、1机壳和2叶轮三大部件，进风口3与机壳1之间通过法兰连接，在机壳盖板13上设置机壳加强法兰14，在进风口处设置进风口法兰10，进风口法兰和机壳加强法兰之间通过连接螺栓11连接。为了防止气体泄漏，在进风口3和机壳1之间增加密封垫12进行密封，但是在连接螺栓11孔处仍然存在密封不严的现象，高压气体从连接螺栓11孔处泄漏出，对于输送空气、烟气等无毒、不易燃的气体而言，该密封结构完全满足使用要求，但是，如果用于输送煤气等易燃易爆且有毒的气体时，密封处要做到“零泄漏”。As shown in Figure 3, the existing ventilator mainly includes 3 air inlets, 1 casing and 2 impellers. The
因此本发明的技术方案如图2所示，在通风机的机壳侧板处增加一外置钢圈，即第一钢圈4，该第一钢圈4与机壳侧板焊接牢固，在第一钢圈4外部焊接一加厚法兰；进风口法兰处增加一外置钢圈，即第二钢圈5，第二钢圈5与进风口法兰焊接牢固，第二钢圈5外部焊接第二加厚法兰7，第二加厚法兰7与第一加厚法兰6的密封面处设置一密封槽，密封槽内增加O型密封圈9，第二加厚法兰7与第一加厚法兰6通过连接螺栓8、螺母进行连接。第一钢圈4与第二钢圈5之间形成迷宫密封结构，有效阻止了气体外泄漏，同时，密封槽结构的设计实现气体“零泄漏”。该结构将连接法兰不再与气体接触，避免了从螺栓8孔处泄漏的风险。Therefore, the technical solution of the present invention is as shown in Figure 2. An external steel ring is added at the side plate of the ventilator, that is, the first steel ring 4, and the first steel ring 4 is firmly welded to the side plate of the machine case. A thickened flange is welded to the outside of the first steel ring 4; an external steel ring is added to the air inlet flange, that is, the
实施例2Example 2
本实施例与实施例1的不同之处在于，本实施例提供一种煤气通风机进风口密封方法，包括：The difference between this embodiment and Embodiment 1 is that this embodiment provides a method for sealing the air inlet of a gas ventilator, including:
通过设置在通风机进风口处设置第一钢圈和第二钢圈，第一钢圈和第二钢圈之间形成密封结构，阻挡气体外泄；By setting the first steel ring and the second steel ring at the air inlet of the fan, a sealing structure is formed between the first steel ring and the second steel ring to prevent gas from leaking out;
通过在第一钢圈上设置第一加厚法兰，第二钢圈上设置第二加厚法兰，第一加厚法兰和第二加厚法兰通过螺栓连接。The first thickened flange is arranged on the first steel ring, the second thickened flange is arranged on the second steel ring, and the first thickened flange and the second thickened flange are connected by bolts.
通过在第二加厚法兰上，与第一加厚法兰密封面处设置密封槽，密封槽内设置密封圈。A sealing groove is arranged on the sealing surface of the second thickened flange with the first thickened flange, and a sealing ring is arranged in the sealing groove.
以上均为本发明的较佳实施例，并非依此限制本发明的保护范围，故：凡依本发明的结构、形状、原理所做的等效变化，均应涵盖于本发明的保护范围之内。The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the present invention should be covered by the protection scope of the present invention Inside.
Claims (10)
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| CN202310017259.6A CN115750437A (en) | 2023-01-06 | 2023-01-06 | A gas fan air inlet sealing device and method |
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| CN202310017259.6A CN115750437A (en) | 2023-01-06 | 2023-01-06 | A gas fan air inlet sealing device and method |
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| DE102019115011A1 (en) * | 2019-06-04 | 2020-12-10 | Borgwarner Inc. | Compressor with inlet insert and return duct |
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2023
- 2023-01-06 CN CN202310017259.6A patent/CN115750437A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201339609Y (en) * | 2008-12-25 | 2009-11-04 | 王凯 | Improved supercharging blower for coal gas transmission |
| CN206175258U (en) * | 2016-10-18 | 2017-05-17 | 包头市新爱科风机制造有限责任公司 | Carry poisonous or easy explosion gas's accident special blower |
| CN109026793A (en) * | 2018-10-10 | 2018-12-18 | 镇江市丹徒区粮机厂有限公司 | A kind of energy conservation low-leak type blower |
| CN211174775U (en) * | 2019-06-04 | 2020-08-04 | 江苏华兴特钢铸造有限公司 | Inlet structure of chemical pump with filtering system |
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