CS219682B1

CS219682B1 - Supporting construction of the all-metal gastight pipe walls of the vapour boiler

Info

Publication number: CS219682B1
Application number: CS255581A
Authority: CS
Inventors: Kazimir Novotny; Jozef Bobovnicky
Original assignee: Kazimir Novotny; Jozef Bobovnicky
Priority date: 1981-04-06
Filing date: 1981-04-06
Publication date: 1983-03-25

Abstract

Vynález sa týká nosnej konštrukcie celokovových plynotesných rúrkových stien parného ; kotlá. Rieši problém přenosu tiaže, silových pósobení a dilatácií medzi jednotlivými časťami nosnej konštrukcie. Podstatou vynálezu je to, že podpěrný rošt je j pevne uložený na hlavnom homom nosníku a na j i hlavnom dolnom nosníku prostredníctvom valivéi ho ložiska, pričom hlavný horný nosník a hlavný i dolný nosník sú vzájomné spojené pomocou vyva- : žovacích ramien, sústavou tiahiel a vzpier tak, že í tiahla a vzpěry sú s hlavnými nosníkmi spojené kíbami. Hlavně nosníky sú zavesené na prevádzacie potrubia a na komory bočných stien pomocou prestavitefných pružinových závesov.The invention relates to a full-metal support structure gas-tight steam pipe walls ; boiler. It solves the problem of the transfer of gravity, force effects and dilatations between the individual portions of the carrier structures. The essence of the invention is that the support grate is j fixed to the main beam and to j the main lower beam by rolling bearing, with the main upper beam and the main beam the lower beam is interconnected by means of : mowing arms, system of rods and struts so that The rods and struts are connected to the main beams Kiba. Mainly the beams are hung on the transfer piping and sidewall chambers with adjustable hinges.

Description

Vynález sa týká nosnej konštrukcie celokovo! vých plynotesných rúrkových stien parného kotlá, u ktorých sa rieši přenos tiaže, dilatačně problémy i a silové pósobenia medzi jej jednotlivými časťami.The invention relates to the supporting structure all-metal. gas-tight tubular walls of the steam boiler, in which the transfer of gravity, dilatation problems i and force effects between its individual parts are solved.

U doteraz známých převedení parných kotlov sa ' tiaž celokovových plynotesných rúrkových stien v oblasti medziťahu prenášala do stropu nosnej konštrukcie, v prevažnej váčšine prípadov, prostredníctvom podpěrného roštu a skupin závěsných rúrok tvoriacich mreže v miestach vstupu a výstupu spalin do a z medziťahu. Nevýhodou tohoto klasic\ kého riešenia přenosu tiaže celokových plynotes; ných rúrkových stien spočívá predovšetkým v ro' bustnom převedení podpěrného roštu, v jeho I dilatačných problémoch, no najma v komplikovai nom zapojení jednotlivých výhřevných ploch, ktoi ré musia zabezpečit sporahlivé prenesenia tiaže» ¹ niektorých stien parného kotlá. Problémy sú aj so zavěšením roštu na bočné steny medziťahu a s jeho utěsněním voči rúrkam plynotesných celokovových stien. Nie sú zanedbatelné ani problémy spojené s tepelnými deformáciami nosníkov roštu, ktoré vzhladom k nutnosti preklenutia relativné • velkých vzdialeností bočných stien medziťahu, o ktoré sú opreté potažné na ktoré sú zavesené, | vychádzajú po statickej stránke vysoké čím sú vytvořené podmienky pre ich Tahkú deformáciu.In the prior art steam boilers, the weight of all-metal gas-tight tubular walls in the area of the intermediate drawing has been transferred to the ceiling of the supporting structure, in most cases, through the support grid and groups of hanging pipes forming grilles at the flue gas inlet and outlet. The disadvantage of this classical solution of gravity transfer of all-gas gases; NYCHA pipe wall consists mainly of ro 'Busts transfer support grate, his I expansion problems, but especially in complicated nom involvement of individual heating surfaces, KTOI Ré must ensure sporahlivé delegation of gravity ^»1 some walls of steam boilers. There are also problems with hanging the grate on the side walls of the intermediate draft and sealing it against the tubes of gas-tight all-metal walls. Also, the problems associated with the thermal deformations of the grate beams are not negligible, due to the need to bridge the relatively large distances of the side walls of the intermediate drawing on which they are supported and on which they are suspended, | they are statically high, thus creating conditions for their tensile deformation.

Vyššie uvedené nedostatky sú odstránené nosnou konštrukciou celokovových plynotesných rúrkových stien parného kotlá podlá vynálezu, jehož podstata spočívá v tom, že jej podpěrný rošt je uložený na hlavnom hornom nosníku pevne a na ! hlavnom dolnom nosníku prostredníctvom valivé_i ho ložiska, pričom hlavný horný nosník a hlavný ^: dolný nosník sú vzájomné spojené pomocou vyvažovačích ramien, sústavou tiahiel a vzpier tak, že tiahla a vzpěry sú s hlavnými nosníkmi spojené kíbami, ďalej hlavně nosníky sú zavesené na prevádzacie potrubie a tiež na komory bočných stien medziťahu pomocou prestavitelných pružinových závesov.The above-mentioned drawbacks are eliminated by the support structure of the all-metal gas-tight tubular walls of the steam boiler according to the invention, which is based on the fact that its support grate is supported firmly and on the main upper beam. the main lower beam by means of rolling _and bearing, where the main upper beam and the main ^{: the} lower beam are connected to each other by balancing arms, a system of rods and struts so that the rods and struts are connected to the main beams by joints; and also on the side wall chambers of the intermediate drawing by means of adjustable spring hinges.

Uložením podpěrného roštu prostredníctvom valivého ložiska na hlavnom nosníku dolnom je umožněné obidvom hlavným nosníkom sledovat’ dilatačně posuvy plynotesných celokovových rúrkových stien parného kotlá. V danom případe sa jedná o zadnú stenu spalovacej komory, šikmý sklz medziťahu a prednú stenu druhého tahu. Z týchto stien sa tiež do hlavných nosníkov prenáša cez sústavu závěsných tyčí, pružinových zvázkov a konzol, s ktorými sú pevne spojené. Krútiace momenty vyvolané mimo osovým pósobením pre-By supporting the support grate by means of a roller bearing on the main beam lower, it is possible for both main beams to follow the expansion movements of the gas-tight all-metal tube walls of the steam boiler. In the present case, it is the rear wall of the combustion chamber, the inclined slip of the intermediate draft and the front wall of the second draft. It is also transferred from these walls to the main beams through a set of suspension bars, spring bundles and brackets with which they are fixedly connected. Torques generated outside the axial propagation of the pre-

Claims

A support structure of all-metal gas-tight tubular walls of a steam boiler, comprising a support grid, main beams, brackets, struts, tie rods, spring hinges and balancing arms, characterized in that the support grid (9) is fixedly mounted on the main upper beam (8) By weighting the walls, they balance the arms firmly connected to the main beams by means of rods and struts, which by their joints allow their free movement. The forces generated by the decomposition of the torques acting around the longitudinal axes of the main beams - lighten them. This achieves a reduction in the size of the beams, but most importantly, we reduce the undesirable deflection and, indirectly, also reduce the requirements for the spring bundles of the wall hinges. For relatively good solved relative expansion joints, all metal gasses; There are no problems with sealing the fuel channel in the area of the intermediate tube walls. The greatest advantage of the solution is the possibility of optimal shifting of the heating surfaces in the area of the intermediate draft, which results in a compactly welded box-shaped steam boiler, particularly resistant to deformation.

In the accompanying drawing, a sectional view of a portion of the intermediate drawing of a PI-shaped steam boiler with a support; construction of all-metal gas-tight tubular walls.

The all-metal gas-tight pipe wall 1 of the flue is connected via a connecting node 2 to the all-metal gas-tight pipe wall 3 of the superheater, which forms the combustion chamber nose 4, the inclined bottom of the intermediate chamber 5 and further the front wall 6 of the second steam boiler draft. The supporting structure of all-metal gas-tight tubular walls consists of a main lower beam 7, a main upper beam 8, and a support grid 9, the support grid 9 being fixedly connected to the main beam 8 and supported on the main lower beam 7 by a roller bearing 10. the brackets 11 and the balancing arms 12 are fixedly connected to the lower beam 7 and to the main upper beam 8. The spring brackets of the all-metal gas-tight tubular walls 13 are mounted on the brackets 11. The balancing arms 12 are connected to the main lower beam 7 and The main lower girder 7 and the main upper girder 8 are hinged in part to the transfer lines 17 and in part to the side wall chambers 18 of the intermediate drawing 19, by means of adjustable spring hinges 20.

The support structure of the all-metal gas-tight tubular walls of the steam boiler according to the invention can be used in new projects of steam boilers firing both liquid and fossil fuels. The advantage of the solution is also that by removing the bars - change; heating surfaces, the deposits of unwanted ash deposits are also removed.

OF THE INVENTION and on the main lower beam (7) by means of a rolling bearing (10), the main upper beam (8) being connected to the main lower beam (7) by a balancing arm (12) by means of a linkage (14) and struts (15).

2. Load-bearing construction of all-metal gas-tight tubular walls of a steam boiler as defined in point 1. | characterized in that the linkage assembly (14) and the struts (15)! it is connected to the main upper beam (8) and the main I lower beam (7) by joints (16).

3. The supporting structure of the all-metal gas-tight tubular walls of the steam boiler according to item 1. is 2. characterized in that the main lower beam (7) and the main upper beam (8) are suspended on the transfer pipeline (17) and side wall chambers (18). the intermediate tension (19) by means of adjustable spring hinges (20).

1 drawing