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Overview of low-pressure heater (low-pressure heater):

The function of a low-pressure heater, abbreviated as a low-pressure heater, is to use the steam that has done some work in the turbine to extract it into the heater to heat the feedwater, increase the temperature of the water, reduce the amount of steam discharged from the turbine to the condenser, reduce energy loss, and improve the circulation rate of the thermal system. The conclusion is that a vertical tube plate heater is commonly used. The heating surface of the heater is generally composed of straight or U-shaped tube bundles made of brass pipes or slotted steel pipes.

Low pressure heater (low pressure heater) Figure 1

Low pressure heater (low pressure heater) - output potential:

Low pressure heater, low-pressure heater. The heated water enters the separated water chamber from the upper inlet pipe and then flows into the U-shaped pipe bundle. The U-shaped pipe absorbs the heat of the heated steam in the steam space of the heater, and is transferred to the flowing water inside the pipe by the pipe wall. The heated water flows out through the outlet water chamber of the heater.

Working principle of low-pressure heater (low-pressure heater):

The low-pressure heater (working principle of low-pressure heater) has both self flow and drainage pump circulation, and the difference in equipment is whether there is a drainage pump- A general power plant uses condensate water directly from the shaft seal heater to the low-pressure heater (different systems have different numbers, for example, 125MW and 300MW have 4-)

Low pressure heater, low pressure heater malfunction and measures:

1. The pipe bundle at the steam inlet is easily damaged by steam flow erosion. Low pressure heaters usually install a door protection baffle on the steam inlet pipe bundle to disperse steam flow and reduce its impact. 2. The heated water vaporizes in the heating water pipe of the heater, causing a water hammer. To prevent this phenomenon, it is required that the pressure of the heated water should be higher than the pressure of the heated vapor. 3. Non condensable gas accumulation. The air discharge pipe installed on the heater should be kept unobstructed.

Low pressure heater, low pressure heater structure - form:

Lianyungang Lingdong provides high and low pressure heaters (low-pressure heaters), which are vertical devices. The internal heating pipes are divided into two categories: disc-shaped pipes and U-shaped pipes, each with its own length, and can be selected according to user needs!

Low pressure heater, low pressure heater supply range:

1. Standardized production - and supporting production for the host factory-

2. Design and customize doors according to user requirements

3. Undertake maintenance such as replacing tube bundles and other equipment renovations, as well as technical renovation services

4. Provide high-pressure accessories such as heat exchangers and sealing rings

Low pressure heater, low pressure heater specifications technical parameters:

機(jī)組功率（MW）	管側(cè)設(shè)計(jì)壓力（MPa）	管側(cè)設(shè)計(jì)溫度（℃）	殼側(cè)設(shè)計(jì)壓力（MPa）	殼側(cè)設(shè)計(jì)溫度（℃）	給水流量（t/h）	每臺(tái)傳熱面積（㎡）	每種規(guī)格的臺(tái)數(shù)	低壓加熱器順序號(hào)	外形（mm）	-量（kg）
N6	1.0	100	0.6	150	34	20			Φ516×3500	780
N12		100		150	65	50			Φ616×4400	1366
-壓25		100		150	98	80	1	1	Φ720×4500	3200
-壓25		105		150	98	80	1	2	Φ720×4500	3200
50	1.5	100		150	171	100	2	1和2	Φ820×4600	3600
50		145		210	171	100	2	3和4	Φ820×4600	3600
75		100		150	239	160	2	1和2	Φ1020×4500	4950
75		145		210	239	160	2	3和4	Φ1020×4500	4950
100	1.8	100		150	311	200	2	1和2	Φ1232×4800	5320
100	1.8	145		210	311	200	2	3和4	Φ1232×4800	5320
125	2.2	150		150	350	260	1	1	Φ1132×6540	6100
		150		255	350	260	2	2和3
		150	0.64	325	350	260	1	1
200		100	0.6	150	510	340		1	Φ1332×6750	11500
200		115	0.6	210	510	340		2
200		130	0.6	270	510	340		3
200		150	0.7	350	510	340		4
300	3.5	100	0.6	150	737	600		1	Φ1426×9650	22400
		120	0.6	220	737	600		2
		150	0.6	270	737	600		3
		165	0.7	350	737	600		4
600	4	100	0.6	150	1426	1100		1	低加？	低加？
		120	0.6	220	1426	1280		2
		150	0.6	270	1426	1000		3
		165	0.7	350	1426	1250		4

以上低壓加熱器（低加）參數(shù)僅供參考，按實(shí)際設(shè)計(jì)為主！

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