The base of the heat exchanger must be installed so that the heat exchanger does not sink, or the pipe is subjected to excessive deformation to the nozzle of the heat transfer device. The foundation is generally divided into two types: one is a brick-shaped saddle-shaped foundation, and the heat exchanger has no saddle-type support and is directly placed on the saddle-shaped foundation. The heat exchanger and the foundation are not fixed, and can be required for thermal expansion. Move freely. The other is a concrete foundation, and the heat exchanger is firmly connected to the foundation by anchor bolts through the saddle support.

The basic quality inspection and acceptance work should be carried out strictly before installing the heat exchanger. The main items are as follows: basic surface overview; basic elevation, plane position, shape and main dimensions, and whether the reserved holes meet the actual requirements; the position of the anchor bolts Is it correct, the thread condition is good, the nuts and washers are complete, and whether the base surface of the horn is placed flat or the like.

After the foundation acceptance is completed, the lining iron is placed on the foundation before the heat exchanger is installed, and the foundation surface where the horn is placed must be leveled so that the two can be in good contact. The thickness of the horn can be adjusted to allow the heat exchanger to reach the designed level. After the horn is placed, the stability of the heat exchanger can be increased, and the weight can be uniformly transmitted to the foundation through the horn. The horn can be divided into flat horns, diagonal horns and open horns. Among them, the diagonal horns must be used in pairs. There should be horns on both sides of the anchor bolts. The installation of the horns should not hinder the heat expansion of the heat exchanger. After the heat exchanger is in place, the level should be used to level the heat exchanger, so that the joints can be unstressed. Connect the pipe in case. After leveling, the diagonal horn can be welded to the seat, but it must not be welded to the flat horn or skateboard below. When two or more overlapping heat exchangers are installed, the lower heat exchanger should be aligned and the anchor bolts should be fully fixed before the upper heat exchanger is installed. The pumpable tube heat exchanger should be cleaned before installation, and the sealing surface and baffle should be protected when pumping the tube bundle. When moving and lifting the bundle, the bundle should be placed on a dedicated support structure to avoid damage to the heat transfer tubes.

Depending on the form of the heat exchanger, sufficient space should be left at both ends of the heat exchanger to meet the requirements for conditional (operational) cleaning and maintenance. The fixed head cover end of the floating head heat exchanger should have sufficient space to draw the tube bundle from the housing, and the outer head cover end must also leave a position of more than one meter to disassemble the outer head cover and the floating head cover.

There should be sufficient space at both ends of the fixed tube plate heat exchanger to allow the tube to be withdrawn and replaced. Also, when the inside of the tube is cleaned by mechanical means. The tube can be brushed at both ends. The fixed head cover of the U-tube heat exchanger should allow sufficient space for the tube bundle to be withdrawn, or leave enough space at the opposite end to allow the housing to be removed.

The heat exchanger must not be operated above the conditions specified on the nameplate. The temperature and pressure drop of the tube and shell-side medium should be supervised frequently to analyze the leakage and fouling of the heat-exchange tubes. The shell-and-tube heat exchanger uses the tube to heat exchange, cool, condense, heat and evaporate the materials inside and outside. Compared with other equipment, the surface area of the other corrosive medium contacts is very large, and the corrosion perforation joint occurs. The risk of slack leakage is very high, so the method of preventing corrosion and leakage of the heat exchanger is also considered more than other equipment. When the heat exchanger is heated by steam or cooled by water, the dissolved matter in the water is heated. Most of the solubility will increase, while the calcium sulphate type has almost no change. Cooling water is often recycled and the salts are concentrated due to evaporation of water, causing deposits or fouling. Corrosion caused by corrosive dissolved gases and chloride ions in the water, corrosion and scaling alternate, which intensifies the corrosion of steel. Therefore, cleaning must be performed to improve the performance of the heat exchanger. Since the difficulty of cleaning is rapidly increased with the increase of the thickness of the scale layer or the deposition, the cleaning interval should not be too long. It should be periodically according to the characteristics of the production equipment, the nature of the heat exchange medium, the corrosion rate and the operation cycle. Inspect, repair and clean.