CN217209312U

CN217209312U - Novel SP boiler

Info

Publication number: CN217209312U
Application number: CN202220782665.2U
Authority: CN
Inventors: 刘志红
Original assignee: Gezhouba Shimen Special Cement Co ltd
Current assignee: Gezhouba Shimen Special Cement Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-08-16
Anticipated expiration: 2032-04-07

Abstract

The utility model relates to a SP boiler, specifically disclose a novel SP boiler, include from the top down set gradually in the boiler body over heater, evaporimeter, economizer, through the water inlet header at the economizer through pipeline fixedly connected with tee bend, the other two-way of tee bend connects first connecting pipe, second connecting pipe respectively, and all fixedly connected with the water valve on first connecting pipe, second connecting pipe, still connect with the make-up water pump through the pipeline at the second connecting pipe; the top of boiler body is the exhaust port and is had the flue gas access pipeline at exhaust port department welded fastening, and fixedly connected with hinders dirt net flue gas access pipeline other end fixed connection on the heat exchanger in exhaust port, and the delivery port of heat exchanger passes through pipeline and make-up water pump fixed connection. The utility model discloses not only can the exclusive use, also can use with AQC boiler is supporting, also effectively avoid the straight tube part top deposition of coiled pipe simultaneously.

Description

Novel SP boiler

Technical Field

The utility model relates to a waste heat utilization technology field in the cement manufacture, concretely relates to novel SP boiler.

Background

The SP boiler is a vertical boiler installed on a kiln tail waste gas channel and used for absorbing waste heat of kiln tail waste gas, and generally comprises a superheater, an evaporator and an economizer which are arranged from top to bottom, wherein an outlet header of the economizer is fixedly connected and communicated with an inlet header of the evaporator through a pipeline, an outlet header of the evaporator is fixedly connected and communicated with an inlet header of the superheater through a pipeline, and the outlet header of the superheater outputs superheated steam. The SP boiler feed water comes from a low-temperature economizer of the AQC boiler, generates superheated steam after absorbing heat again, and sends the superheated steam to a steam turbine to do work for power generation. The SP boiler among the prior art is used with AQC boiler is supporting, when need be applied to waste heat utilization in white portland cement production with it, need take the SP boiler apart with original AQC boiler, this just leads to the pipeline of being connected with AQC boiler before no longer being suitable for new application, needs to reequip the SP boiler.

Disclosure of Invention

Not enough to above-mentioned prior art exists, the utility model aims at providing a novel SP boiler that structural design is reasonable and the suitability is strong.

In order to achieve the above object, the utility model adopts the following technical scheme: a novel SP boiler comprises a boiler body, and a superheater, an evaporator and a coal economizer which are sequentially arranged in the boiler body from top to bottom, wherein the superheater, the evaporator and the coal economizer are respectively composed of a plurality of coiled pipes, an inlet header and an outlet header; the second connecting pipe is also connected with a make-up water pump through a pipeline; the top of the boiler body is provided with a smoke outlet, a smoke access pipeline is fixedly welded at the smoke outlet, and a dust blocking net is fixedly connected in the smoke outlet; the other end of the flue gas access pipeline is fixedly connected to the heat exchanger, and a water outlet of the heat exchanger is fixedly connected with the make-up water pump through a pipeline.

Furthermore, in order to increase the heat exchange area, the arrangement mode of the coiled pipe of the evaporator is orthogonal to that of the coiled pipes of the superheater and the economizer, and each coiled pipe of the superheater, the evaporator and the economizer is still vertically arranged.

Further, the flue gas access pipeline is a heat preservation pipeline.

Furthermore, a splayed connecting block with a narrow upper part and a wide lower part is welded and fixed between the upper straight pipe part and the adjacent lower straight pipe part of each serpentine pipe of the superheater, the evaporator and the economizer, and the connecting part between the splayed connecting block and the upper and lower straight pipe parts is in arc smooth connection. The splayed connecting block can effectively prevent smoke dust from accumulating at the top of the straight pipe part of the coiled pipe.

Compared with the prior art, the utility model discloses the beneficial effect who possesses is:

the utility model discloses a connecting pipe is add through the tee bend at the water inlet of original economizer header, be used for the utility model discloses during the exclusive use (not supporting the use with the AQC stove promptly), stop up the water valve on first connecting pipe and turn off first connecting pipe with the end cap, and open the water valve on the second connecting pipe, give through the make-up water pump the utility model provides a water source, moreover the utility model discloses an insert the heat exchanger with its exhaust flue gas in, preheat the water in the heat exchanger, regard as this preheated water at last the utility model discloses a make up water, make full use of flue gas waste heat. The utility model discloses not only can the exclusive use, also can use with AQC boiler is supporting, also effectively avoid the straight tube part top deposition of coiled pipe simultaneously.

Drawings

FIG. 1 is a schematic structural view of the present invention;

the boiler comprises a boiler body 1, a boiler body 2, a superheater 3, an evaporator 4, an economizer 5, a tee joint 6, a first connecting pipe 7, a second connecting pipe 8, a water valve 9, a make-up water pump 10, a flue gas access pipeline 11, a dust blocking net 12, a heat exchanger 13 and a splayed connecting block.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings. The following is the most preferable scheme of the present invention, but it does not limit the protection scope of the present invention, and any equivalent or similar replacement without departing from the concept of the present invention should fall within the protection scope of the present invention. In addition, the terms "fixedly connected" and "connected" are prior art, and in particular, according to the circumstances, conventional connection modes such as threaded connection, flange connection, welding and fixing are adopted. And all parts not described in detail below should be performed as in the prior art.

As shown in fig. 1, the utility model discloses a novel SP boiler, including boiler body 1 and from last superheater 2 of down fixed connection in boiler body 1 in proper order, evaporimeter 3, economizer 4, over heater 2, evaporimeter 3, economizer 4 all is by many coiled pipes, the import header, the export header constitutes and many coiled pipes one end fixed connection and intercommunication on the import header, the export header of the equal fixed connection of the other end and intercommunication, over heater 2, evaporimeter 3, economizer 4 three carries out fixed connection and intercommunication according to conventional mode. The utility model mainly modifies the inlet header of the economizer 4, in particular, the inlet header of the economizer 4 is fixedly connected and communicated with a tee joint 5 through a pipeline, the other two ways of the tee joint 5 are respectively connected with a first connecting pipe 6 and a second connecting pipe 7, and water valves 8 are fixedly connected on the first connecting pipe 6 and the second connecting pipe 7; the first connecting pipe 6 is used for being detachably connected with the original AQC boiler, and the second connecting pipe 7 is fixedly connected with a supplementary water pump 9. The top of boiler body 1 is the exhaust port and is had flue gas access pipeline 10 in exhaust port department welded fastening, and flue gas access pipeline 10 is the insulating tube way. A dust blocking net 11 is fixedly connected in the smoke exhaust port, and the dust blocking net 11 is a relatively compact stainless steel net and can filter most of smoke dust particles; the other end of the flue gas access pipeline 10 is fixedly connected and communicated with an air inlet of a heat exchanger 12, and a water outlet of the heat exchanger 12 is fixedly connected with a supplementary water pump 9 through a pipeline. The utility model discloses a heat exchanger 12 is the immersive coil heat exchanger among the prior art, lets in hot flue gas in the coil, the coil is the running water outward, and in the environment was finally discharged to the flue gas, and the running water is gone into by second connecting pipe 7 under the effect of make-up water pump 9 behind this heat transfer the utility model discloses an economizer 4, as the utility model discloses a water source when using alone replaces among the prior art the AQC boiler feedwater supporting with it.

The utility model discloses an increase heat transfer area, can be orthogonal setting with the whole arrangement of coiled pipe (the left and right arrangement in figure 1) of evaporimeter 3 and the coiled pipe arrangement of over heater 2, economizer 4 (the tandem arrangement in figure 1), nevertheless over heater 2, evaporimeter 3, economizer 4 three's every coiled pipe still is vertical layout with prior art the same.

The utility model discloses still welded fastening has the splayed connecting block 13 of narrow width down between the upper portion straight tube portion of per serpentine pipe of over heater 2, evaporimeter 3, economizer 4 three and adjacent lower part straight tube portion, and splayed connecting block 13 and the upper and lower straight tube portion between the position of being connected be the smooth connection of arc. The splayed connecting block 13 can effectively prevent smoke dust from accumulating at the top of the straight pipe part of the coiled pipe.

Claims

1. A novel SP boiler comprises a boiler body, and a superheater, an evaporator and a coal economizer which are sequentially arranged in the boiler body from top to bottom, wherein the superheater, the evaporator and the coal economizer are respectively composed of a plurality of coiled pipes, an inlet header and an outlet header; the second connecting pipe is also connected with a make-up water pump through a pipeline; the top of the boiler body is a smoke outlet, a smoke access pipeline is fixedly welded at the smoke outlet, and a dust blocking net is fixedly connected in the smoke outlet; the other end of the flue gas access pipeline is fixedly connected to the heat exchanger, and a water outlet of the heat exchanger is fixedly connected with the make-up water pump through a pipeline.

2. The new SP boiler as set forth in claim 1, characterized in that the serpentine tube arrangement of the evaporator is orthogonal to the serpentine tube arrangement of the superheater and the economizer, and each serpentine tube of the superheater, the evaporator and the economizer is still vertically arranged.

3. The novel SP boiler of claim 1 or 2, wherein said flue gas access duct is a thermal insulation duct.

4. The new SP boiler of claim 3, characterized in that a splayed connecting block with a narrow top and a wide bottom is welded and fixed between the upper straight tube part and the adjacent lower straight tube part of each serpentine tube of the superheater, the evaporator and the economizer, and the connecting part between the splayed connecting block and the upper and lower straight tube parts is in arc smooth connection.