自動(dòng)排空裝置分為兩種 :（低壓PN25以?xún)龋┮耗覠崦粼M成和（過(guò)熱蒸汽系統）雙金屬片組成。
Free-ball float trap
The drain valve is opened or closed by taking advantage of the change of liquid level of condensate water with the high-precision grinding stainless steel hollow float ball in the valve cavity. This steam trap has a simple structure, mainly consisting of float balls and automatic emptying devices. The sole action elements, namely, the stainless steel hollow float ball is manufactured by high-precision grinding process, and its entire sphere can serve as the sealing face and will not be worn intensively during the work, so it has a longer service life. In addition, there is no wearing part in the valve cavity, with a high reliability. The float ball can freely adjust the openness of the valve opening in response to the change of water level and discharge the condensate water continuously with a subcooled temperature of about 0℃ and higher efficiency.
The automatic emptying devices fall into two types : (within low pressure PN25) consisting of reservoir thermo-sensitive elements and (overheated steam system) consisting of bimetals.
優(yōu)點(diǎn)：
1、轉動(dòng)的是高精度研磨的不銹鋼浮球，抗腐蝕。
2、結構簡(jiǎn)單，維修方便。
3、不受壓力波動(dòng)的影響，連續排水，噪聲小。
4、裝有自動(dòng)排空裝置，能夠迅速排除空氣，防止氣堵和汽鎖。
5、體積小，排量大。
6、有水就排，能夠加快系統啟動(dòng)速度。
Merits
1. The sole moving component is the high-precision grinding stainless float ball, which can resist erosion.
2. Its simple structure is convenient for maintenance.
3. To drain continuously with low noise, without being affected by the fluctuation of the pressure.
4. To be equipped with automatic emptying devices and it can eliminate air quickly and prevent air blocking and steam locking.
5. Small volume and large displacement.
6. To drain whenever there is water left over so as to quicken the startup speed of the system.
主要零件材料/The materials of primary accessories
零部件名稱(chēng)Part and component name 材質(zhì)Material 閥體、閥蓋Valve body、valve cover 鑄鐵、鑄鋼、不銹鋼Cast iron、Cast steel、Stainless steel 自由浮球Free float ball 304/316不銹鋼304/316 Stainless steel 閥座Valve seat 高鉻不銹鋼High chrome stainless steel 自動(dòng)排空氣裝置Automatic air exhaust 不銹鋼、熱敏元件Stainless steel、Thermo-sensitive element 過(guò)濾網(wǎng)、罩Filtrating screen、Cover 不銹鋼Stainless steel
不銹鋼球直徑/Diameter of stainless bal
| 材質(zhì)/Material | A,JH3N | B,JH5N | D,JH7N | E,JH9N | F,JH11N | G,JH13N |
| 鑄鐵 Cast iron | 50 | 68 | 110 | 150 | 180 | 200 |
| 鑄鋼 Cast steel | 50 | 70 | 120 | 150 | 190 | 220 |
在設備剛啟動(dòng)時(shí)，低溫冷凝水和空氣同時(shí)進(jìn)入閥腔，這時(shí)開(kāi)啟自動(dòng)排空裝置將空氣排除，使低溫凝結水順利進(jìn)入閥腔，閥腔內的凝結水的液位隨即上升，使浮球升高，開(kāi)啟閥孔，將凝結水迅速排出 ; 前面的蒸汽很快進(jìn)入加熱設備，使設備迅速加熱升溫，當蒸汽或較高溫度的凝結水進(jìn)入閥腔時(shí)，自動(dòng)排空裝置開(kāi)始膨脹，關(guān)閉自動(dòng)排空氣裝置，疏水閥開(kāi)始正常工作。這時(shí)閥腔內的浮球隨凝結水液位的高低而升降，能連續的排放凝結水。由于自由浮球式疏水閥的閥座孔總處于凝結水液位以下，形成水封，水汽自然分離，工作時(shí)達到無(wú)蒸汽泄漏。該閥的最小工作壓力為0.01Mpa，從0.01Mpa至工作壓力范圍內不受溫度和工作壓力波動(dòng)的影響，能連續工作，其最小過(guò)冷度約為0℃，由于該閥能自動(dòng)、連續地排除凝結水，加熱設備內不會(huì )有水積聚，能使加熱設備達到理想換熱效率。是生產(chǎn)工藝加熱設備的理想疏水閥之一。
Description of work principle
When the equipment is just started, the low-temperature condensate and air enter the valve cavity at the same time. At this time, open the automatic evacuation device to remove the air, so that the low-temperature condensate can enter the valve cavity smoothly. The liquid level of the condensate in the valve cavity will rise immediately, so that the floating ball will rise. Open the valve hole, so that the condensate can be discharged quickly. The steam in front of the equipment will enter the heating equipment quickly, so that the equipment can be heated quickly and heated up. When the steam or the temperature is lower than When the high temperature condensed water enters the valve chamber, the automatic emptying device starts to expand, the automatic air exhausting device is closed, and the drain valve starts to work normally. At this time, the floating ball in the valve chamber will rise and fall with the level of condensate, which can discharge condensate continuously. Because the valve seat hole of the free floating ball type drain valve is always below the condensate level, forming a water seal, the water vapor is naturally separated, and there is no steam leakage during operation. The minimum working pressure of the valve is 0.01Mpa, from 0.01Mpa to the maximum working pressure range, it is not affected by the fluctuation of temperature and working pressure, and can work continuously. Its minimum supercooling degree is about 0 ℃. Because the valve can automatically and continuously remove the condensate, there is no water accumulation in the heating equipment, which can make the heating equipment achieve the ideal heat exchange efficiency. It is one of the ideal drain valves for heating equipment of production process.
自由浮球式疏水閥 FREE-BALL FLOAT TRAP
技術(shù)參數/Technique parameter
| 殼體壓力等級 Shell pressure grade | 負荷泄漏率 Load leakage rate | 使用介質(zhì) Used medium | 殼體材質(zhì) Shell material | 允許背壓率 Permitted backpressure rate | 工作壓差 Maximum operating pressure differential |
| 1.6、 2.5、 4.0、 6.4 MPA | ≈0% | 蒸汽、凝結水 Steam、 Condensate water | 碳鋼/ 304/ 316 Carbon steel | ≥80% | 4.0MPA |
| 節能效果 Energy Saving effect | 最小過(guò)冷度 Minimum Subcooled temperature | 排水方式 Drainage method | 允許溫度 Maximum Allowable temperature | 排空氣裝置 Air exhaust system | 壓力變化范圍 Pressure Change range |
| 優(yōu)秀 Excellence | 0℃ | 連續方式 Continue mode | 420℃ | 自動(dòng) Automatic | 適應 Adaption |
外型尺寸和重量/Prime out-form dimensions and weigh
| 產(chǎn)品型號 Product model | 口徑(DN) Calibre | L法蘭 Flange | L螺紋/ 焊接 Thread /welding | H1 | H2 | W | 重量 Weight | 使用壓力 范圍(Mpa) Pressure change range | 公稱(chēng)壓力 (Mpa) Nominal pressure |
| J5N | 15~20 25 | -
| 150 160 | 56 | 129 | 110 | 9 9 | 0.1-1.2 | 1.6 |
| J5NF | 15~20 25 | 210 230 | - | 56 | 129 | 110 | 9 9.2 | 0.1-1.2 | 1.6 |
| JH5NF | 15~20 25 | 195 215 | - | 56 | 129 | 110 | 9.0 9.8 | 0.1-2.5 | 2.5-4.0 |
| JH5N40F | 15~20 25 | 230 | - | 56 | 129 | 110 | 10 | 0.1-4.0 | 6.4 |
| JH5N | 15~20 25 | - | 195 215 | 56 | 129 | 110 | 8.7 | 0.1-2.5 | 2.5-4.0 |
| JH5N40 | 15~20 25 | - | 230 | 56 | 129 | 110 | 9.0 | 0.1-4.0 | 6.4 |
排水量/Capacity
注解：
1、選型時(shí)請提供工作壓力、工作壓差、凝結水發(fā)生量、工作溫度、連接方式及標準。
2、凝結水負荷的安全系數一般為2～3倍。
3、正確安裝、定期保養清除閥內污物，保證疏水閥正常工作和延長(cháng)使用壽命。
4、裝有自動(dòng)排氣閥的疏水閥，其凝結水量能夠額外增加300Kg/h。
Note
1. Please provide operating pressure and operating pressure difference, generating quantity of condensation water, operating temperature, connecting mode and standards in selecting product models.
2.The load of condensation water’s safety coefficient reaches 2 to 3 times in general.
3. Please make sure the drain valve is installed properly, maintained regularly, cleaned up and operates under the normal condition, so as to extend its service life.
4.The steam trap, if equipped with automatic exhaust valve, can have the quantity of condensate water increased by 300Kg/h.
