SU10493A1 - Ship boiler device for simultaneously generating high and low pressure steam - Google Patents

Description

The proposed shipboard boiler unit in terms of low pressure is suitable for the tin commonly used on ships for box boilers with circulating smoke tubes; In the high-pressure mouth, a special agent, a boiler of unnatural action, is arranged, the heating part of which consists of tubes located in the furnace of the boiler, low pressure. In the proposed device, there are two options for laying down and heating elements of the indirectly operating boiler: 1) directly under the low pressure boiler for newly built Structures and 2) in front of the low pressure boiler flame tube for converting existing shipboard boiler installations to high pressure boilers.

In FIG. 1 shows a longitudinal section of the proposed boiler device; FIG. 2 is a front view of it; FIG. 3- ® top; FIG. 4 is a pair diagram of the boilers of FIG. 1-3; FIG. 5 is a longitudinal section of a modified device.

The boiler shown in FIG. 1 and 3, in its part of low pressure, consists of a cylindrical boiler 1 with smoke tubes 2, the openings of which extend into the smoke box 3, passing into the chimney 4. Above the smoke box 3 there is an air heater 5. In the smoke tubes, the pipes 2 are elements 6 of the superheater, which are connected to the collector 7. The cylindrical boiler 1, which lies on the huts 8, is protected from lateral movements by rafts 13 attached to the uprights 10. The clamps 8 (FIG. 2) are pivotally suspended from the hollow uprights 10 by using pins 9 (FIG. 2) who at the top of their Asti conduits 11 are connected with the air heater 5, and at the bottom with the space under the insert 10 12Stoyki simultaneously serve to pre-air warming. Firebox 12

under the boiler 1 contains a part of the elements of the heating system of a high-pressure steam generator that has indirect heating.

In order to form the working steam in the high pressure part, the boiler 14 serves, which OR is resting on the bulkhead of the boiler room or on free-standing supports (not shown in the drawing). In the water space of KOT.ia 14, coils 16 of the superheater are placed, forming the heat-producing part of the boiler of indirect action. Its heat-absorbing part is formed by pipes 17 and 17a, the first of which, as shown in FIG. 2, are located in the fire box located beneath boiler 1 in such a way that they form a wall 18 in the middle separating it longitudinally into two parts. In addition, the pipes 17 bounding the side and front walls of the fire box are connected below with a sump 19, and upwards with a sump and a steam trap 20, from which pipelines 21 go to the superheater coil 16, where condensate is led through pipelines 22 to the sump 19.

The heating tubes 17a placed in the circulating chamber 23 (Figs. 1 and 2) are located several turns one above the other, forming thermal protection for the pipes of the high-pressure superheater 24, also located in the circulating chamber. The crown is superheated. 24, the bottom still contains a low pressure superheater 25, which serves alone or in connection with the superheater vS-to superheat the low pressure steam of the boiler 1. The upper part 26 of the rear step of the reversing chamber 23 is formed of high pressure superheater pipes .1 24, while the lower part 27 of the backflow chamber 23 is formed by additional boilers of the indirectly working boiler. Fireproof obama 28 is arranged in the usual way. The low pressure pump 29 serves to feed the boiler 1 with water coming from the reverser 30. The high pressure feed pump 31 takes the heated water from the low pressure boiler through pipeline 32 and brings it through the pipeline 33 to the boiler 14.

FIG. 4 shows the arrangement of two ship boilers arranged in rows; both smoke boxes communicate in the usual way with chimney 4a.

The device of FIG. 5 is intended to retrofit existing box-shaped CATs with air-fired 34 and smoke tubes 2. To obtain a low pressure boiler, the back chamber is removed from the box-shaped boiler and the rear wall 36 is again connected. The furnace 12 is placed in front of the heat pipes and is limited to the heating tubes 17 of the boiler This operation 14. The smoke tubes 2, the smoke box 3, the tube 4, the air heater O, the superheater 6 and the manifolds 7 do not differ from the above proposed variant. The indirect heating boiler system, which includes all the elements of the first device, has in the reversing chamber 23 a part of the heating tubes 2 7 a, forming the back wall of the chamber. Tubes 27 No. are attached by their lower part to a collector 19a connected by pipe 39 to collectors 19. The upper part of pipes 27a is connected to a collector 19b supplying heating steam through pipelines 21a to 21 coils 16. The feeding system of the proposed device is similar to the system of the first variant . In this device, the boiler 14 lies on a special support 36. The lining configuration is somewhat different from the previous one with a protection pattern for connecting the flue pipes 34 with the boiler 1 at locations 37-38.

The subject of the patent.

1. A ship boiler device for simultaneously generating high and low pressure, characterized by the use, as a high pressure steam generator, of a boiler 14 (Fig. 1-4) of indirect action, with tubular elements 17 designed to heat the heating

the medium and the components of the stevvi tonotay pakery, and as a low-pressure boiler - a cylindrical boiler 1 with hot exhaust pipes 2 that form the second chimney of the entire device, high and low pressure superheaters are installed in the back chamber of which device.

2, Modification of the device described in. 1, characterized by the use of boilers, 17th pipes (Figs. 1 and 2), located in the back chamber of the boiler and constituting a part of the surface intended to heat the intermediate medium for the high pressure boiler.

3. Variation of the device described in paragraph 1, as applied to flue-gas boilers, characterized in that

A furnace chamber formed by the high-pressure boiler pipes 17 (Fig. 5) is installed in front of the low-pressure boiler flue pipes 34.

4. Application when described in pp. I - 3 hollow struts 10 (Figs. 2, 3, 4) designed to maintain hoegutn 8 for hanging the low pressure boiler and used to preheat the air in them before it enters the air preheater 5.

5. Alteration of the device described in paragraphs 1-4, characterized in that part 26 (FIG. 1) of the tubular elements of the superheater is used to form the rear section of the reversing chamber of the boiler device.