CN205332167U - Horizontal adverse current syllogic U -shaped pipe high pressure feed water heater - Google Patents

Abstract

The utility model discloses a horizontal countercurrent three-section U-shaped tube high-pressure heater, which comprises a shell, a tube plate, a water chamber, a superheated steam cooling section, a saturated steam condensation section, a water-repellent cooling section, a built-in drain The gas device, U-shaped pipe, and water chamber are connected to the shell through the tube plate, and a sliding support and a fixed support are arranged under the shell. After adopting the horizontal structure, the water level control volume is increased, which is convenient for high water level control, prevents the water level from being too high to pour into the steam turbine or the water level is too low to damage the downstream feed water pump, maximizes the use of steam superheat, and adopts a built-in exhaust device, The non-condensable gas condensed in the equipment is discharged in time to avoid corrosion. The built-in exhaust device not only discharges the non-condensable gas condensed in the equipment in time, but also guides the steam to flow in a certain direction, and is used with the deflector to optimize the heat transfer effect.

Description

Horizontal countercurrent three-stage U-shaped tube high pressure heater

technical field

The utility model belongs to a high-pressure heater, in particular to a horizontal countercurrent three-section U-shaped tube high-pressure heater.

Background technique

The high-pressure heater is a heat exchange device that uses the steam extracted by the steam turbine to heat the feed water to improve thermal efficiency. Shell and tube heat exchangers are generally used. Conventional vertical high-pressure heaters have disadvantages such as large installation space and small water level control volume, and most conventional high-pressure heaters only have one heat exchange section. In order to achieve the heat exchange effect, an external steam cooler needs to be installed. There are many, the system is complicated, and the maintenance workload is heavy, so it is rarely used now.

Contents of the invention

In order to overcome the above-mentioned defects in the prior art, the purpose of this utility model is to provide a horizontal countercurrent three-stage U-shaped tube high-pressure heater, which has a simple and reasonable structure, stable operation and long service life.

The utility model provides a horizontal countercurrent three-section U-shaped tube high-pressure heater, which includes a shell, a tube plate, a water chamber, a superheated steam cooling section, a saturated steam condensation section, a hydrophobic cooling section, and a built-in exhaust device , U-shaped tube, the water chamber is connected to the shell through the tube plate, the sliding support and the fixed support are provided under the shell, the water chamber is hemispherical, the water supply inlet pipe and the water supply outlet pipe are arranged on both sides of the water chamber The tube is located below the water chamber, and the feedwater outlet pipe is located above the water chamber; the superheated steam cooling section and the drain cooling section are arranged side by side on the tube plate, the superheated steam cooling section is located above the drain cooling section, and the saturated steam condensing section is located in the superheated steam cooling section and behind the drain cooling section; the U-shaped tube is arranged on the tube sheet, and the lower end passes through the superheated steam cooling section, the saturated steam condensation section and the drain cooling section; the steam inlet pipe is arranged on the upper side of the shell near the tube sheet, and is connected with the inside of the shell The superheated steam cooling section is connected, and the lower side of the shell opposite to the steam inlet pipe is provided with a drain inlet and a drain outlet, which are connected to the drain cooling section in the shell; the built-in exhaust device is arranged on the tube plate.

The utility model provides a horizontal countercurrent three-stage U-shaped tube high-pressure heater. Its beneficial effect is that after adopting a horizontal structure, the water level control volume is increased, which is convenient for the control of high water level, and prevents the water level from being poured into the steam turbine or The water level is too low to damage the downstream feed water pump, and the steam superheat is used to the maximum extent. The built-in exhaust device is used to discharge the non-condensable gas condensed in the equipment in time to avoid corrosion. In addition to the gas, it can also guide the steam to flow in a certain direction, and cooperate with the deflector to optimize the heat exchange effect.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of an embodiment of the utility model.

Labeled in the figure:

1. Shell; 2. Steam inlet pipe; 3. Superheated steam cooling section; 4. U-shaped pipe; 5. Water chamber; 6. Water supply outlet pipe; 7. Water supply inlet pipe; 8. Tube plate; 9. Fixed support 10. Hydrophobic cooling section; 11. Hydrophobic outlet; 12. Sliding support; 13. Built-in exhaust device.

detailed description

Referring to the accompanying drawings, the horizontal countercurrent three-stage U-shaped tube high-pressure heater provided by the utility model will be described in detail below in conjunction with an embodiment.

Example

Referring to Fig. 1, the horizontal countercurrent three-stage U-shaped tube high-pressure heater of the present embodiment includes a shell 1, a tube plate 8, a water chamber 5, a superheated steam cooling section 3, a saturated steam condensing section, and a hydrophobic cooling section. Section 10, built-in exhaust device 13, U-shaped pipe 4, water chamber 5 is connected to shell 1 through tube plate 8, sliding support 12 and fixed support 9 are arranged under shell 1, water chamber 5 is hemispherical The two sides of the water chamber 5 are provided with a water supply inlet pipe 7 and a water supply outlet pipe 6, the water supply inlet pipe 7 is located below the water chamber 5, and the water supply outlet pipe 6 is located above the water chamber 5; the superheated steam cooling section 3 and the hydrophobic cooling section 10 Arranged side by side on the tube sheet 8, the superheated steam cooling section 3 is located above the hydrophobic cooling section 10, and the saturated steam condensation section is located behind the superheated steam cooling section 3 and the hydrophobic cooling section 10; the U-shaped tube 5 is arranged on the tube sheet 8, and the lower end passes through Superheated steam cooling section 3, saturated steam condensing section and drain cooling section 10; steam inlet pipe 2 is arranged on the upper side of shell 1 close to tube plate 8, connected with superheated steam cooling section 3 in shell 1, and steam inlet The lower side of the casing 1 opposite to the tube 2 is provided with a hydrophobic inlet and a hydrophobic outlet 11, which are connected to the hydrophobic cooling section 10 in the casing 1;

Claims (1)

1. a horizontal reversed flow syllogic U-tube high-pressure heater, it is characterized in that: it includes it and includes housing, tube sheet, hydroecium, superheated steam cooling section, saturated vapor condensation segment, hydrophobic cooling section, built-in exhausting equipment, U-tube, hydroecium is connected with housing by tube sheet, housing is connected with sliding support and hold-down support, hydroecium is hemispherical, hydroecium both sides are provided with feed-water inlet pipe and feedwater outlet pipe, and feed-water inlet pipe is positioned at the lower section of hydroecium, and feedwater outlet pipe is positioned at the top of hydroecium；Superheated steam cooling section and hydrophobic cooling section are located on tube sheet side by side, and superheated steam cooling section is positioned at above hydrophobic cooling section, and saturated vapor condensation segment is positioned at superheated steam cooling section and hydrophobic cooling section rear；U-tube is located on tube sheet, lower end traverse superheated steam cooling section, saturated vapor condensation segment and hydrophobic cooling section；Steam inlet pipe is provided close on the upside of the housing of tube sheet, is connected with the superheated steam cooling section in housing, is provided with hydrophobic import and hydrophobic outlet on the downside of the housing relative with steam inlet pipe, is connected with the hydrophobic cooling section in housing；Built-in exhausting equipment is located on tube sheet。