1、風(fēng)量參數(shù)

1. Air volume parameters

高壓羅茨風(fēng)機(jī)風(fēng)量參數(shù)，指的是單位時(shí)間內(nèi)羅茨風(fēng)機(jī)輸送氣體的體積，一般計(jì)量單位為：m/min或者m/h，也存在其他計(jì)量單位，高壓羅茨風(fēng)機(jī)因行業(yè)應(yīng)用較為廣泛，在某些行業(yè)中只為輔助設(shè)備，無法估算所需的風(fēng)量參數(shù)，如：水泥輸送、鍋爐返料等。這些工況下可能只能提供單位時(shí)間的輸送量，如：輸送水泥15噸/小時(shí);該物料輸送量數(shù)據(jù)也可以幫助我們估測(cè)風(fēng)量，風(fēng)量參數(shù)是羅茨風(fēng)機(jī)選型時(shí)必須要掌握的參數(shù)之一。

The air volume parameter of the high-pressure Roots blower refers to the volume of gas transported by the Roots blower per unit time, and the general measurement unit is: m/ Min or m/ h. There are also other measurement units, and high-pressure Roots fans are widely used in the industry. In some industries, they are only auxiliary equipment and cannot estimate the required air flow parameters, such as cement conveying and boiler return. Under these operating conditions, it may only be possible to provide a unit time conveying capacity, such as conveying 15 tons/hour of cement; The material conveying capacity data can also help us estimate the air volume, which is one of the parameters that must be mastered when selecting Roots fans.

2、壓力參數(shù)

2. Pressure parameters

壓力參數(shù)指的是高壓羅茨風(fēng)機(jī)的出口壓力，也指的是羅茨風(fēng)機(jī)需要克服的壓力，粵協(xié)風(fēng)機(jī)曾一再強(qiáng)調(diào)，羅茨風(fēng)機(jī)自身并不產(chǎn)生壓力，其克服前方管道壓力的能力，我們稱之為“羅茨風(fēng)機(jī)壓力”。因羅茨風(fēng)機(jī)屬于容積式風(fēng)機(jī)，其壓力取決于前方管道和大氣壓力，也是我們常說的“背壓”。前方壓力多少，壓力表上面就會(huì)顯示多少壓力，超過額定壓力，高壓羅茨風(fēng)機(jī)就會(huì)處于超壓狀態(tài)，燒毀電機(jī)是隨時(shí)可能發(fā)生的事情。

The pressure parameter refers to the outlet pressure of the high-pressure Roots blower, which also refers to the pressure that the Roots blower needs to overcome. The Guangdong Association of Fans has repeatedly emphasized that the Roots blower itself does not generate pressure, and its ability to overcome the pressure in the front pipeline is called the "Roots blower pressure". Because Roots fans belong to volumetric fans, their pressure depends on the front pipeline and atmospheric pressure, which is also commonly referred to as "back pressure". The amount of pressure ahead will be displayed on the pressure gauge. If it exceeds the rated pressure, the high-pressure Roots blower will be in an overpressure state, and burning the motor is a possible occurrence at any time.

3、轉(zhuǎn)速參數(shù)

3. Speed parameters

高壓羅茨風(fēng)機(jī)轉(zhuǎn)速影響的有兩個(gè)方面，一個(gè)是風(fēng)機(jī)的風(fēng)量，一個(gè)是風(fēng)機(jī)的使用壽命，在其他參數(shù)確定的情況下，轉(zhuǎn)速越高，風(fēng)機(jī)的輸送量越大;其次風(fēng)機(jī)轉(zhuǎn)速越高，自身磨損也就越嚴(yán)重，所以，同樣的羅茨風(fēng)機(jī)，其他參數(shù)全部一樣，轉(zhuǎn)速不同，那么，轉(zhuǎn)速高的風(fēng)機(jī)使用壽命會(huì)低于轉(zhuǎn)速低的風(fēng)機(jī)。以上，我們就能看出轉(zhuǎn)速參數(shù)的重要性了。

There are two aspects that affect the speed of the high-pressure Roots blower: one is the air volume of the blower, and the other is the service life of the blower. When other parameters are determined, the higher the speed, the greater the conveying capacity of the blower; Secondly, the higher the speed of the fan, the more severe its own wear. Therefore, for the same Roots fan, all other parameters are the same, but the speed is different. Therefore, the service life of the fan with higher speed will be lower than that of the fan with lower speed. Above, we can see the importance of speed parameters.

4、介質(zhì)參數(shù)

4. Medium parameters

并非所有氣體羅茨風(fēng)機(jī)都能進(jìn)行輸送，像酸堿性較高的氣體、易燃易爆的氣體，羅茨風(fēng)機(jī)是不能進(jìn)行輸送的。例如：強(qiáng)腐蝕性氣體，即便我們可以定制特殊材質(zhì)的羅茨風(fēng)機(jī)，但是強(qiáng)腐蝕性氣體對(duì)羅茨風(fēng)機(jī)損壞非常的高，很難適應(yīng)此類工作環(huán)境。市面上大多是鑄鐵羅茨風(fēng)機(jī)、不銹鋼羅茨風(fēng)機(jī)，也都有自己的使用標(biāo)準(zhǔn)，所以，在選型時(shí)，即便根據(jù)風(fēng)量和壓力能夠進(jìn)行選型，但對(duì)輸送介質(zhì)也是有一定要求。

Not all gas Roots blowers can transport gases, such as gases with high acidity and alkalinity, flammable and explosive gases, Roots blowers cannot transport them. For example, strong corrosive gases, even if we can customize Roots blowers with special materials, can cause high damage to the Roots blower and make it difficult to adapt to such working environments. Most of the Roots blowers on the market are cast iron and stainless steel, which also have their own usage standards. Therefore, when selecting, even if the selection can be based on air volume and pressure, there are certain requirements for the conveying medium.

5、密封性參數(shù)

5. Sealing parameters

上面我們提到了輸送介質(zhì)，羅茨風(fēng)機(jī)通常輸送清潔空氣，也可以輸送煤氣、沼氣等氣體，在風(fēng)機(jī)選型時(shí)，我們還需要考慮到一個(gè)參數(shù)：密封性，一般羅茨風(fēng)機(jī)的密封都是采用漲圈+活塞環(huán)密封，但是輸送有特殊氣體時(shí)，可能需要采用各種機(jī)械密封，密封方式的差異，會(huì)造成風(fēng)機(jī)型號(hào)價(jià)格浮動(dòng)，也是選型必要參數(shù)之一。

As mentioned above, for conveying media, Roots blowers usually transport clean air and can also transport gases such as coal gas and biogas. When selecting a fan, we also need to consider one parameter: sealing. Generally, Roots blowers use expansion rings and piston rings for sealing, but when conveying special gases, various mechanical seals may be required. The difference in sealing methods can cause fluctuations in the price of the fan model, which is also one of the necessary parameters for selection.

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