丹富斯平衡閥工作原理與安裝

平衡閥是在水力工況下，起到動態、靜態平衡調節的閥門。如：靜態平衡閥，動態平衡閥。靜態平衡閥亦稱平衡閥、雙位調節閥等，它是通過改變閥芯與閥座的間隙(開度)，來改變流經閥門的流動阻力以達到調節流量的目的，其作用對象是系統的阻力，能夠將新的水量按照設計計算的比例平衡分配，各支路同時按比例增減，仍然滿足當前氣候需要下的部份負荷的流量需求，起到熱平衡的作用。

丹富斯平衡閥的安裝說明:

既然安裝平衡閥是為了更好的供暖，就不存在反裝的問題。如果是反裝，就是人為的錯誤，當然就會糾正。平衡閥屬于調節閥范疇，丹富斯平衡閥它的工作原理是通過改變閥芯與閥座的間隙(即開度)，改變流體流經閥門的流通阻力，達到調節流量的目的。平衡閥相當于一個局部阻力可以改變的節流元件，對不可壓縮流體，由流量方程式可得。

    Kv為平衡閥的閥門系數。它的定義是：當平衡閥前后差壓為1bar(約1kgf/cm2)時，流經平衡閥的流量值(m3/h)。平衡閥全開時的閥門系數相當于普通閥門的流通能力。

    如果平衡閥開度不變，則閥門系數Kv不變，也就是說閥門系數Kv由開度而定。通過實測獲得不同開度下的閥門系數，平衡閥就可做為定量調節流量的節流元件。

    在管網平衡調試時，用軟管將被調試的平衡閥的測壓小閥與智能儀表連接，儀表可顯示出流經閥門的流量值(及壓降值)，經與儀表人機對話，向儀表輸入該平衡閥處要求的流量值后，儀表通過計算、分析、得出管路系統達到水力平衡時該閥門的開度值。

    1.不應隨意變動平衡閥開度管網系統安裝完畢，并具備測試條件后，使用智能儀表對全部平衡閥進行調試整定，并將各閥門開度鎖定，使管網實現水力工況平衡。在管網系統正常運行過程中，不應隨意變動平衡閥的開度，特別是不應變動開度鎖定裝置。

    2.不必再安裝截止閥。在檢修某一環路時，可將該環路上的平衡閥關閉，此時平衡閥起到截止閥截斷水流的作用，檢修完畢后再回復到原來鎖定的位置。因此安裝了平衡閥，就不必再安裝截止閥。

    3.系統增設(或取消)環路時應重新調試整定在管網系統中增設(或取消)環路時，除應增加(或關閉)相應的平衡閥之外，原則上所有新設的平衡閥及原有系統環路中的平衡閥均應重新調試整定(原環路中支管平衡閥不必重新調整)。

  Dan fuss balancing valve working principle and installation

Balancing valve in hydraulic conditions, dynamic and static balance adjustment valve. Such as: static balancing valves, dynamic balancing valve. Static balancing valve which is also called balance valve, two position regulator, etc., it is by changing the clearance between the valve core and valve seat (opening), to alter the flow through the valve of flow resistance in order to achieve the purpose of flow adjustment, the role of the object is the resistance of the system, to the new water allocation proportion according to the design and calculation of balance, each branch in proportion to increase or decrease at the same time, still can meet the needs of the current climate under part load of traffic demand, have the effect of thermal equilibrium.

Dan fuss balancing valve installation instructions:

Since the installation of balance valve is to better heating, there is no reverse loading problem. If it is the outfit, it is human error, of course will be correct. Balancing valve belong to the category of regulating valve, Dan fuss balancing valve working principle of it is by changing the clearance between the valve core and valve seat (opening), change the flow resistance of fluid flow through the valve, to achieve the purpose of flow adjustment. Balancing valve is equivalent to a throttling element of local resistance to change of incompressible fluid, the flow equation is available.

Kv for balancing valve valve coefficient. Before and after it is defined as: when the balance valve differential pressure is 1 bar (about 1 KGF/cm2), through the balance valve flow values (m3 / h). Balancing valve fully open the valve coefficient is equal to the average flow capacity of the valve.

If a balancing valve opening is kept constant, the valve coefficient Kv unchanged, that is to say, the valve coefficient Kv by opening. Obtained from the measured coefficient under different opening valve, balance valve can be as a quantitative flow adjusting throttle element.

When debugging in the pipeline, the pressure balance valve hose will be debugging small valve connected with special inligent instruments, instrument can display the flow through the valve pressure drop (and value) value of the flow, the man-machine dialogue with instrument, instrument input to the balancing valve after the required flow rate value, the instrument through calculation and analysis, it is concluded that a balanced hydraulic piping system of the valve opening.

1. Should not arbitrarily change the balance valve opening of pipeline system is installed, and the test conditions, using a dedicated smart meters to debug setting of all balance valve, and lock the valve opening, the balance of pipe network to realize the condition. In the process of pipe network system normal operation, should not arbitrarily change the balance valve opening, especially should not change the opening the lock.

2. Don't have to install globe valve. In the overhaul of a loop, the loop on the balancing valve can be closed, at this time have the effect of cutting cut-off valve flow balancing valves, reply again after the repair to the original lock position. So the balance valve installation, just don't have to install cut-off valve.

3. The system to add (or cancel) the loop should be readjusted when added in the setting in the pipe network system (or cancel) loop, in addition to increase (or close) corresponding balance valve, in principle, all new balance valve and balancing valve shall be in the original system loop to debug setting (branch in loop of the balancing valve don't have to readjust).