The steam-water heater

 

(57) Abstract:

Usage: in heat technology, in particular in heat supply systems. The inventive steam-water heater contains a horizontal casing 1 with the tube bundle 12, secured in tube plates 10 and 11. In the holes of the reference grating 13 of the sleeve 15, is equipped with at least one flared and made of a material identical to a material of the beam pipe. To pipe the boards adjacent the front and rear water chamber 4 and 5, provided with a horizontal dividing partitions within the corresponding slots. The ends of the pipes are located in the plane of the chambers 4 and 5 and protrude above the surface of the Board. In the area of the steam supply pipe 2 is located divider pair 16 in the form of a perforated plate mounted with a clearance relative to the walls of the casing and relative to the beam pipe. 4 C.p. f-crystals, 5 Il.

The invention relates to heat engineering and can be used in heat supply systems.

Known steam-water heater containing a horizontal housing with inlet and outlet pipes, the tube bundle is fixed in the tube plate, to which is adjoined the water chambers. One of them is equipped with respiratoy camera contains an annular area, and in the center of this area through the compensator is connected with the disc-shaped pipe Board, adjacent to the cylindrical shell forming an internal steam chamber (1).

Also known horizontal steam-water heater containing casing with a bundle of U-tubes, fixed in the tube plate and held in the holes of the support walls. The casing has a steam supply pipe with a pair of dividers in the form of perforated plates and a device for draining and venting neskondensirovannyh gases (2).

However, it should be noted the complexity of manufacturing the known devices and lack of durability of the tube bundles.

Known steam-water heater, containing the horizontal case, the beam pipe is fixed in the tube plate, and the reference block walls with pipe holes. To pipe the boards adjacent the front and rear water chamber with dividing partitions within the grooves made in the tube plate. The case is equipped with nozzles steam supply and condensate, and in the area of the steam supply pipe is placed with a gap relative to the inner casing wall divider pair in the form of a perforated vsmatrivaetsa as a prototype of the proposed device.

A disadvantage of the known devices is the formation of air bags in the upper part of the front water chamber during operation of the heater and reduce the temperature coming out of the water heater due to the contact through a thin wall with cooling water flowing into the heater. These drawbacks are caused by the location of the dividing partitions in water chambers. In addition, during operation the flow area end sections of the pipes is reduced due to the deposition of iron oxides, salts of temporary hardness and other suspended particles present in water. Because of the vibrations of the tubes during operation of the heat exchanger decreases the strength of their walls in the area of the holes of the reference lattices, which leads to premature exit from the operation.

In Fig.1 shows a longitudinal section of the heater of Fig.2 - the location of the partitions in the anterior chamber of Fig.3-the location of the partitions in the back of the camera, Fig.4 the location of the bushings in the holes of the support grid of Fig.5 transverse section of the heater in the zone of the steam supply pipe.

The heater includes a horizontal body 1 with a steam supply pipe 2 and pipe condensate drain 3, the front and rear is izontally dividing partitions 8, 9 included in the corresponding grooves made in the tube plates 10 and 11. The bundle of heat exchange tubes 12 has a block of the reference gratings 13 and 14, interconnected and pipe Board 10 and spaced from each other at a distance of 0,45-0,55 length of the tube bundle. The number of grids depends on the length of the pipes, but their number should not be less than two. In the pipe holes gratings installed sleeve 15 in length, component 1,1-4,0 thickness of the grating, which has at least one flared and made of a material identical to a material of the tube 12 (e.g., brass pipe, brass bushing, brass pipe copper sleeve, and so on ), which reduces the wear of the pipes in the area of the reference lattices and improves their korrozionostoykoy. The ends of the tubes 12 are placed in the cavities of the chambers 4 and 5 and are relative to the plane of the respective tube plate 0.5-10 mm, which promotes the deposition of a considerable part of salts and sludge in the water, on the surface of the tube plate in between the above areas, and contributes to the reduction of deposits inside the pipes. Pipe 12 of the beam in the zone of the vertical axis of the housing 1 are located at a distance greater than the distance between the other tubes of the beam formation in the annular prostka steam supply 2 is placed with a gap relative to the inner wall of the body 1 and the surfaces of the tubes 12 of the beam divider pair 16 in the form of a perforated plate, rigidly fixed at one end to the tube plate 10.

In operation, the heater of the steam fed through the pipe 2 into the tube space of the housing 1 and formed in the process of heat exchange with the pipe 12, the condensate is discharged through pipe 3. The heated water flows initially in the lower section of the front water chamber 4, limited by the lower wall of this chamber and the upper horizontal partition 8, and then enters the pipe 12 of the beam provided with the specified section. Then the partially heated water enters the section of the rear water chamber 5, limited by the lower wall of this chamber and the upper horizontal partition. The partition 9 rear camera 5 is located below the top walls of the chamber 4, and partially heated water flows into the upstream pipe and the upstream section of the chamber 4, and so on, the Heated water is withdrawn from the upper section of the chamber 4. Thus the estimated water temperature at the outlet of the heater and reduces the cost of electricity for pumping water by eliminating the air bags. It should be noted also the adaptability of this design partitions.

The location of the pipe 12 of the beam with the formation of the vertical channel 17 for the bearing partitions and install divider pair with a gap relative to the tubes of the beam contributes to increase its wear resistance.

1. The steam-water heater containing a horizontal casing, a tube bundle unit reference grids with holes for tubes and tube sheets, which are adjacent the front and rear water chamber defined in their cavities dividing partitions within corresponding grooves made in the tube plate, and the outlet of the condensate and the steam supply pipe, which is placed with a gap relative to the inner casing wall divider pair in the form of a perforated plate, wherein the partitioning of the water chambers and the corresponding slots in the tube plates are arranged horizontally, the ends of the tubes of the bundle are placed in the cavities of the chambers and are relative to the plane of the respective tube plate 0.5 to 10 mm, and the holes in the support grates installed sleeve length, part 1,1 4,0 thickness of the grating, which has at least one flared.

2. The heater under item 1, wherein the support grid is located at a distance from the front water chamber, comprising 0,4 0,6 length of the tube bundle, and are rigidly connected with the tube Board, adjacent to the anterior chamber, and each other.

3. The heater under item 1, otelia between other pipes beam, education in the annular space of the vertical channel of variable cross-section for the steam-water mixture.

4. The heater under item 1, characterized in that the divider pair is located with a clearance relative to the beam pipe and attached to the tube plate.

5. The heater under item 1, characterized in that the bushing is installed in the reference lattices made of a material identical to a material of the beam pipe.

 

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