In the industrial production process, tube heat exchangers are widely used heat exchange equipment. Compared with other partition wall heat exchangers, the heat transfer area per unit volume provided by the equipment is much larger and the heat transfer effect is also better. The following points should be noted during operation:
1, the initial operation should be slow, warm up first, and gradually increase the temperature;
2, Do a good job in preheating the pressure reducing valve and adjusting it after it is put into operation;
3. When starting the unit, the cold side valve should be opened first, and then the hot side valve should be opened after stabilization; when the unit is stopped, the hot side valve should be closed first, and then the cold side valve should be closed;
4. After normal operation, close the bypass valve of the steam-water heat exchanger trap and put the trap into normal operation. If the temperature of the drain is too low, such as50℃Below, the bypass valve can be opened and operated. If the temperature of the steam trap is too high, such as90℃When the condensate system is running without pressure, close the bypass valve to prevent steam from passing through, causing steam and water impact;
5, Operation adjustment, operation adjustment mainly adjusts the water supply temperature and flow rate according to weather changes. The operator mainly achieves the purpose of controlling the outlet water temperature of the unit by controlling the inlet flow of superheated steam to the tube heat exchanger in one section of the thermal unit. When the outdoor temperature is high, the temperature is controlled by controlling the number of operating equipment and adjusting the inlet steam flow. However, be careful to minimize the frequency of opening the heat exchanger to avoid leakage of the sealing gasket due to frequent starting and stopping. When the heating load is reduced, attention should be paid to steam pipe drainage to avoid water hammer in the heat exchanger. Operation adjustment requires coordination and unified deployment of the entire system.
 

Main technical parameters of tube and tube heat exchanger

Specification m2	Effective length mm	outer diameter mm	weight kg
0.5	800	159	60
1	800	159	90
1.5	1200	208	138
2	1200	220	155
3	1400	300	236
5	1200	300	260
10	1600	400	390
15	2400	400	560
20	2600	400	800
30	3200	450	1005
40	3500	500	1310
50	4000	500	1620
60	4000	500	1850
70	4000	500	2080
80	3500	600	2320
90	4000	600	2600
100	3000	700	2950