丹富斯電動(dòng)旁通壓差控制閥（旁通壓差閥）不需任何外來(lái)動(dòng)力，依靠管網(wǎng)自身的壓力工作，保持閥門(mén)兩端的壓差相對(duì)恒定，廣泛用于*空調(diào)集分水器之間，熱力泵供回水之間。可有效保持設(shè)備不被損壞。可以代替電動(dòng)旁通壓差閥。
性能及特點(diǎn) 電動(dòng)壓差旁通閥/電動(dòng)壓差旁通閥型號(hào)
1.恒定閥門(mén)兩端及被控系統(tǒng)壓差支持用戶(hù)系統(tǒng)變流量運(yùn)行；
2.依靠壓差自動(dòng)工作無(wú)須外界動(dòng)力；
3.可以直接顯示控制壓差；
4.可以直接設(shè)定控制壓差；
5.控制壓差調(diào)節(jié)靈敏，操作簡(jiǎn)單；
6.介質(zhì)溫度：0-150℃;
7.控制壓差可調(diào)范圍：0.05-0.6MPa；
8.控制壓差誤差≤±5%。
選型
可根據(jù)管道等徑選用，用于旁通安裝時(shí)可縮徑使用。
丹富斯電動(dòng)壓差旁通閥用途： 電動(dòng)壓差旁通閥/電動(dòng)壓差旁通閥型號(hào)
1.常閉型旁通壓差控制閥用于燃油、燃?xì)鉄嵩垂⒒厮埽?空調(diào)的分、集水器之間，作為一次測(cè)定流量，二次側(cè)變流量系統(tǒng)的旁通安裝，可有效保護(hù)燃油、燃?xì)鈾C(jī)組不會(huì)因流量過(guò)小導(dǎo)致的溫度過(guò)高而損壞，也可有效的保護(hù)冷水機(jī)組因流量過(guò)小而造成的局部?jī)鼋Y(jié)而損壞。
2.常開(kāi)型旁通壓差控制閥用于高度差較大且熱源在高區(qū)的集中供熱系統(tǒng)，使用時(shí)按高度差設(shè)定該閥的壓差，并在低區(qū)回水管適當(dāng)位置安裝減壓泵、止回閥，調(diào)節(jié)閥組成的回水減壓裝置，通過(guò)調(diào)節(jié)閥來(lái)調(diào)節(jié)并設(shè)定回水管壓力，這樣既可保護(hù)高區(qū)用戶(hù)不會(huì)出現(xiàn)倒空現(xiàn)象，又可保護(hù)低區(qū)設(shè)備不會(huì)因壓力過(guò)高而損壞。
電動(dòng)壓差旁通閥控制的作用： 本系統(tǒng)適用于*空調(diào)的冷凍水/熱水系統(tǒng)的壓差旁通控制用途。 產(chǎn)品特點(diǎn)： ★執(zhí)行器選用鑄鋁支架及塑料外殼，體積小、重量輕 ★選用永磁同步電機(jī)，并帶有磁滯離合機(jī)構(gòu)，具有可靠的自我保護(hù)功能 ★-適合多種控制信號(hào)：增量（浮點(diǎn)）、電壓（0～10V）、電流（4～20mA） ★-具有0～10V或4～20mA反饋信號(hào)（選配） ★傳動(dòng)齒輪采用金屬齒輪，大大提高了驅(qū)動(dòng)器的使用壽命 ★功耗低、輸出力大、噪音小 工作原理： 壓差控制器DPC-1通過(guò)檢測(cè)供/回水主管的壓力差，與設(shè)定值相比較，通過(guò)控制電動(dòng)兩通閥的開(kāi)度，使供水與回水間實(shí)現(xiàn)旁通，以保持所需的壓力差值。 Dan fuss electric bypass pressure difference control valve (pressure differential bypass valve) does not need any external power, relying on the network's own work pressure, differential pressure at the ends of the valve is relatively constant, is widely used in central air conditioning set between water segregator, heat pump for water. Can effectively keep the equipment is not damaged. Can replace electric bypass pressure differential valve. Performance and characteristics of the 1. Constant on both ends of the valve and controlled system differential pressure support user system variable flow operation; 2. On differential pressure automatic work without external power; 3. Can directly display control pressure difference; 4. Can be directly set control pressure difference; 5. Controlling differential pressure regulating sensitivity, simple operation; 6. The medium temperature: 0-150 ℃; 7. General control pressure adjustable range: 0.05 to 0.6 MPa; 8. Control the differential error of plus or minus 5% or less. The selection According to pipe diameter selection, installation can be used to bypass reducing use. USES: 1. Normally closed type by-pass differential pressure control valve is used for fuel, gas, heat supply and return pipe, central air conditioning, between points, Siamese as a measuring flow, secondary side bypass installation of variable flow system, which can effectively protect the fuel, gas units will not damage due to flow high temperature caused by too small, also is effective in protecting the chiller caused by traffic is too small and partial freezing damage. 2. Normally open type by-pass pressure difference control valve used in height difference is bigger and the heat source in the central heating system of high area, when used according to the difference in height setting of the valve pressure difference, and in the low return pipe position vacuum pump installation, check valve, regulating valve of backwater pressure-relief devices, through the control valve to regulate and set back to the pipe pressure, so that can protect high area users won't appear empty phenomenon, but also protect the equipment will not damaged by high pressure low area. The role of electric differential pressure bypass valve control: This system is the central air conditioning chilled water/hot water system of differential pressure bypass control purposes. The effect of differential pressure bypass key lies in the fact that chilled water/hot water system can under the lower end of the load, ensure the refrigerator/heat exchanger and the normal operation. Product features: Taken the actuator selection aluminum bracket and plastic shell, small volume, light weight U choose permanent magnet synchronous motor, with magnetic hysteresis clutch mechanism, has reliable self-protection function U - suitable for a variety of control signal: increment (float), voltage (0 ~ 10 v), current (4 ~ 20 ma) U - with 0 ~ 10 v or 4 ~ 20 ma feedback signal (optional) U use a metal gear transmission gear, greatly improve the service life of the drive U low power consumption, big output power, low noise Working principle: by testing for differential pressure controller DPC - 1 / water head pressure difference, compared with the set value, by controlling the electric two-way valve opening, make to by-pass between water supply and return water, in order to maintain the required pressure difference. Differential pressure increases, the red contact, connected with yellow contact pressure to reduce, the red contact with blue contacts connected, red contact can stay in the middle position, and other contact no electrical connections.
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