在工业阀门家族中，蝶阀是“以小博大”的代表——它结构非常简单、体积非常小、重量非常轻，却能在大口径管道中实现快速启闭和流量调节。良工阀门集团的蝶阀产品线覆盖了从普通给排水到1200℃超高温的出彩端工况。

In the industrial valve family, butterfly valve is the representative of "small wins big" - it has the simplest structure, smallest volume, and lightest weight, but can achieve fast opening and closing and flow regulation in large-diameter pipelines. The butterfly valve product line of Lianggong Valve Group covers extreme working conditions from ordinary water supply and drainage to 1200 ℃ ultra-high temperature.

一、蝶阀的工作原理与结构优势

1、 The working principle and structural advantages of butterfly valves

蝶阀的启闭件是一个圆盘形的蝶板，围绕阀杆旋转90°即可实现管道的开启和关闭。蝶阀的“四两拨千斤”体现在：

The opening and closing component of a butterfly valve is a disc-shaped butterfly plate that can be rotated 90 ° around the valve stem to open and close the pipeline. The "four two turns per kilogram" of butterfly valves is reflected in:

结构简单、体积小、重量轻——蝶阀在所有阀门中结构非常简单，安装尺寸非常小。

Simple structure, small size, and light weight - Butterfly valves have the simplest structure and smallest installation size among all valves.

启闭迅速——90°旋转即可完成全开或全关，操作时间仅需几秒钟。

Quick opening and closing -90 ° rotation can complete full opening or full closing, and the operation time only takes a few seconds.

良好的关闭密封和流量调节功能——蝶阀不仅可用于通断，还可用于流量调节。

Good sealing and flow regulation function - Butterfly valves can be used not only for on-off, but also for flow regulation.

二、良工蝶阀的主流产品系列

2、 The mainstream product series of Lianggong butterfly valve

软密封蝶阀——阀座为橡胶或聚四氟乙烯材质，密封性能优异，适用于给排水、水处理等低压工况。

Soft sealed butterfly valve - the valve seat is made of rubber or polytetrafluoroethylene material, with excellent sealing performance, suitable for low-pressure conditions such as water supply and drainage, water treatment, etc.

硬密封蝶阀——阀座为金属材质，适用于高温、高压、腐蚀性介质。

Hard sealed butterfly valve - The valve seat is made of metal material and is suitable for high temperature, high pressure, and corrosive media.

对夹式蝶阀——结构非常紧凑，通过螺栓夹紧在管道法兰之间。

Clamp on butterfly valve - the most compact structure, clamped between pipeline flanges with bolts.

法兰式蝶阀——通过法兰与管道连接，安装可靠。

Flange butterfly valve - connected to the pipeline through a flange, installed reliably.

液控蝶阀——通过液压系统控制蝶板动作，适用于大口径、高压力工况。

Hydraulic butterfly valve - controlled by a hydraulic system to control the movement of the butterfly plate, suitable for large-diameter and high-pressure working conditions.

1200℃超高温蝶阀——良工的拳头产品之一，可在1200℃的出彩端温度下工作。

1200 ℃ ultra-high temperature butterfly valve - one of Lianggong's flagship products, capable of working at extreme temperatures of 1200 ℃.

三偏心多层次金属硬密封蝶阀——精密的弹性密封圈和三偏心结构设计，被广泛用于介质温度≤425℃的冶金、电力、石油化工、给排水和市政建设等工业管道。

Triple eccentric multi-level metal hard sealed butterfly valve - precision elastic sealing ring and triple eccentric structure design, widely used in industrial pipelines such as metallurgy, power, petrochemical, water supply and drainage, and municipal construction with medium temperature ≤ 425 ℃.

三、蝶阀选型的核心技术参数

3、 Core technical parameters for butterfly valve selection

1. 工作温度——常温、高温、低温对密封材质有不同要求。

1. Working temperature - Normal temperature, high temperature, and low temperature have different requirements for sealing materials.

2. 工作压力——软密封蝶阀一般适用于中低压，硬密封蝶阀可适用于高压。

2. Working pressure - Soft sealed butterfly valves are generally suitable for medium and low pressure, while hard sealed butterfly valves can be suitable for high pressure.

3. 密封要求——需零泄漏的场合选用软密封，耐高温的场合选用硬密封。

3. Sealing requirements - Soft seals should be used in situations where zero leakage is required, and hard seals should be used in situations where high temperature resistance is required.

4. 操作方式——手动、涡轮、电动、气动、液动等多种驱动方式可选。

4. Operation mode - Multiple driving modes are available, including manual, turbo, electric, pneumatic, hydraulic, etc.

5. 连接方式——对夹式、法兰式、焊接式等。

5. Connection methods - clamp type, flange type, welding type, etc.

四、蝶阀的典型应用场景

4、 Typical application scenarios of butterfly valves

良工蝶阀广泛应用于给排水、市政建设、电力、石油化工、冶金等行业。在给排水领域，软密封蝶阀是主流选择。在电厂脱硫系统中，耐腐蚀蝶阀是关键设备。在超高温工况下，良工的1200℃超高温蝶阀是少有的可靠选择。从城市供水到高温冶金，从脱硫脱硝到核电军工，良工蝶阀以“小身材”承载着“大作为”。

Lianggong butterfly valves are widely used in industries such as water supply and drainage, municipal construction, power, petrochemicals, metallurgy, etc. In the field of water supply and drainage, soft sealed butterfly valves are the mainstream choice. In the desulfurization system of power plants, corrosion-resistant butterfly valves are key equipment. Under ultra-high temperature conditions, Lianggong's 1200 ℃ ultra-high temperature butterfly valve is a rare and reliable choice. From urban water supply to high-temperature metallurgy, from desulfurization and denitrification to nuclear power and military industry, Lianggong butterfly valves carry great achievements with their small size.

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