CN2381982Y - Coal saving pipes with self bents - Google Patents

Abstract

The utility model relates to a coal saving pipe with a self bending head, which is an indispensable heat interchange part for enhancing boiler output and saving energy. A pipe body part of the coal saving pipe extends a bending head, and the problems that the existing coal-saving group pair is matched additionally with a bending head joint with 180 DEG and the group pair is complex and the seal is inconvenient are changed. The coal saving pipe which has the self connection can be assembled into a required heat interchange group, has the advantages of labor saving and material saving performance and convenient installation and maintenance, and enhances the heat interchange effect than the original coal saving pipe. The series of new products are made of the cast iron or other metals, the manufacturing procedure is less, and the operation is simple and easy.

Description

Self elbow economizer tube

Invention of the present utility model self elbow economizer tube is existing economizer tube, is modified into self elbow economizer tube.

The cast iron gilled tube economizer pipe is the energy-conservation indispensable heat exchanging piece of boiler (province's coal), now all cast iron gilled tube economizer pipes, though old type or streamlined all are straight tubes, body is provided with horizontal several fin, pipe two square ring flange, promptly be into water or delivery port, be again the smoke shielding board (wall) that is not linked to be, when tube and tube connection (connection), must be with (actual is a single piece for the special one half bend double headed roller flange of this pipe, be called for short one half bend), group is to connecting into needed economizer group.Leak water in time spent pipe inboard, the outer cigarette that sidles of pipe.

But it is installed, safeguards the dismounting very complicated, some units purchase boiler and take back, and load onto once, just are out of use for the second time, or the unit boiler erection that has, do not adorn this pipe yet.Be because when installing, this two, economizer tube ring flange of dress earlier, end face is around last asbestos cord (anti-leak-stopping flue gas) all around.Simultaneously in four jiaos of holes of ring flange also go here and there after four lead screw (coping screw bar one in the ring flange inboard, promptly within the walls, otherwise can't connect one half bend) respectively; So just place upper and lower, left and right successively, promptly wants parallel vertical, again before and after alignment, flat sign indicating number is become certain layer, make the interdependent panel (wall) that evenly tightly is linked to be of pipe flange, the time spent cigarette does not allow outside side leakage cigarette gas leakage in the inboard circulation of this plate (wall), otherwise has torn sign indicating number layer again open; Its tube and tube is communicated with (connection), connects into required economizer group with one half bend again.

If should pipe sign indicating number layer out-of-level, front and back be uneven, and out of plumb just makes the ring flange of pipe also uneven or partially, with the one half bend flange to the time, flange butt joint levelling difficulty promptly is connected into and also will leaks cigarette and leak etc.Or when tight lead screw is arranged, often do not have the lead screw pin that spins tight or the like, these phenomenons all tear open greatly greatly and unload, look for reason sign indicating number layer or reinforce screw rod again, often organize after a lot of repetition to the water pressure test qualified after, can relievedly use.

Goal of the invention of the present utility model: provide a kind of self elbow economizer tube that is used for the boiler heat exchange, make it can solve existing economizer tube fully and install, dismounting very complicated etc., and can improve energy-saving effect.

Self economizer tube of the present utility model is achieved in that by a body and is circumferentially with several horizontal fin sheets, and fin is a square, and this body self two or one extend the elbow flange, is self elbow economizer tube of a whole cast when manufacturing.Sign indicating number layer in the vanning or within the walls when use installing, dock along with about self elbow economizer tube, or the vertical base of snapping is neat up and down, wear flange Luo screw mandrel and tight mother Luo, all outside wall (or outside case), be easy to group to being linked to be needed economizer heat exchange group, group to the time cancelled the one half bend connection, thereby labor and material saving.

In conjunction with Figure of description invention of the present utility model is described further, accompanying drawing is the economizer group that 8 self elbow coal saving tube of the present utility model are linked to be, three views.

Fig. 1: be that self main looking in elbow coal saving tube is cutd open figure;

Fig. 2: be that figure is cutd open in self elbow economizer tube side-looking;

Fig. 3: be that self elbow economizer tube is overlooked and cutd open figure;

See Fig. 1: in the case or within the walls by 8 self elbow economizer tube, prolong by a body (1) self two or one and 90 degree elbows (4), related flange (5), and body is used to being furnished with several horizontal fin sheets (2), self elbow economizer body is provided with square supporting base (3), this seat promptly is that this pipe sign indicating number layer is required, is again sign indicating number layer seal receptacle, and end face has Baltimore groove to put airtight and watertight padding around this seat, about making between interdependent ring flange, upper and lower sealing is tighter, prevents gas leakage.This pipe two tube side-by-sides in case are interdependent, horizontal vertical, and 4 layers of the neat mutually sign indicating numbers in front and back, the upper and lower button of self elbow flange is to being linked to be two groups.(6) and top cover (7) at the bottom of the box-frame have been formed independently economizer group.Among Fig. 1: water does not have the flange port of elbow to enter from two self one of elbow economizer tube, and last two pipe bend flange ports flow out to the top in the 4 layers of pipe of flowing through; Flue gas passes in the fin of the pipe outside, and body and fin are heated, and the water in the pipe is heated simultaneously.

The utility model self elbow economizer tube: its body extends angle of bend and equals 90 degree or greater than 90 degree, and be connected with ring flange.

Body is laid with the longitudinal fin of several horizontal fin sheets or symmetry, or non-finned or body are streamlined, or body is round, the long 400-3000 millimeter of its body specification, internal diameter of tube body 20-100 millimeter, material cylinder iron or the series of products that are made into of other metal, this product can be contained in the case or boiler usefulness within the walls, also can work as other heat exchanger tube.

Claims (3)

1, a kind ofly be contained in the case or boiler self elbow economizer tube within the walls, it is characterized in that: body two or one extend the elbow flange, and body is circumferentially with fin or non-finned.

2, self elbow economizer tube according to claim 1: this body of its feature self two or one extend 90 degree or are connected with flange (5) greater than 90 degree elbows (4); The body material adopts cast iron or other metal to make.

3, self elbow economizer tube according to claim 2: it is characterized in that body is round or streamlined, body be circumferentially with the horizontal square fins of number or symmetrical longitudinal fin or body non-finned; The long 400-3000 millimeter of body; Internal diameter of tube body 20-100 millimeter.

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