CN204127982U - Coal-burning power plant's wet desulphurization single-drum chimney bracket node - Google Patents

Abstract

The utility model discloses a kind of coal-burning power plant's wet desulphurization single-drum chimney bracket node, solve the problem that existing single-drum chimney bracket Nodes corrosion leakage is serious.Comprise load-carrying members armored concrete barrel (1) and liner (4), between load-carrying members armored concrete barrel (1) and liner (4), be provided with glass wool cloth resin compounded layer (2) and clay adhesive linkage (3), the medial surface of liner (4) is provided with polytetrafluoroethylene impervious barrier layer (5).The utility model bracket joint structure function is distinct, economy and facility, and efficiency of construction improves, reliably technical, remarkable in economical benefits.

Description

Coal-burning power plant's wet desulphurization single-drum chimney bracket node

Technical field

The utility model relates to a kind of chimney of coal-fired station, the single-drum chimney bracket joint structure particularly used after a kind of coal-fired station smoke-gas wet desulfurization.

Background technology

Single-drum chimney is simple with its construction, and short construction period, the feature that cost is low, is able to wide selection within a period of time.Bracket, as the key position of building liner single-drum chimney by laying bricks or stones, is generally about 10-15 rice along chimney height and arranges one-level, carries the weight that the vertical expansion of chimney and inner wall of stack build liner by laying bricks or stones.Conventional single-drum chimney bracket joint structure is made up of armored concrete cantilever load-carrying members, heat insulation layer, liner and bridging piece four part of dripping.And along barrel hoop, bracket place arranges ring wall key joint more, arranges vertical key joint along cantilever overall height, stitch wide 20-25 millimeter; Kerf spacing 1000 millimeter.But along with the appearance of national environmental protection policy, the employing of coal-burning power plant's wet desulfurizing process, requires that cancellation bypass flue and most owner eliminate GGH flue gas heating system; Now, flue-gas temperature reduces greatly, substantially remains on about 50 DEG C.So the meaning that bracket ring wall key joint absorbs expand flexible and heat insulation layer insulation is all not equal to before.In addition, routine builds the horizontal, vertical mortar joint of liner brickwork by laying bricks or stones, and especially perps is not easily full, causes the air-tightness of masonry bad; Further, conventional bracket node way is for the junction of two sections liner, only use acid resistant adhesive mortar shutoff, for the bracket position frequently that colds and heat succeed each other, collapse in process at normal upright, stress is concentrated, and very easily causes the stress cracking on the acid resistant adhesive mortar slope of anticorrosive coat.Again because present stage most chimney is all in operation under positive pressure, corrosivity wet flue gas is the condensation and dewfall inside concrete tube wall through liner and heat insulation layer easily, or enter thermal insulation layer through bracket place two sections liner connecting portion, and constantly gather a large amount of acid solution at heat insulation layer place, heavy corrosion chimney outer walls of concrete.Under the continuous action of malleation flue gas, barrel weak spot as: acid solution is oozed out at the places such as construction joint, template split bolt hole, formed leak source.According to statistics, conventional configurations single-drum chimney seepage about 70% comes from bracket node.The existence of heat insulation layer and the bridging piece that drips, many procedures, and make the transport of multiple material in construction, keeping complicated, and then add the Meteorological of owner.Heat preserving and insulating material many tools inflammability is a hidden danger for construction safety, correspondingly adds security control link.And the many employings of the bridging piece that the drips prefabricated acid-resisting concrete plate of bracket Nodes or the trapezoidal sheet material of cast stone class are spliced, for the chimney shaft of circle, radial direction splicing and the hoop splicing of the platform that no matter drips are difficult to accomplish " fitting together perfectly " all the time.This just leaves hidden danger to the anticorrosion impervious effect of the entirety at chimney bracket place and the drainage tissue of bridging piece to acid solution that drip.Further, drip, the existence of bridging piece has no small inhibition for the Integral lifting of flue gas stream, is difficult to form smooth excessiveness at bracket Nodes.And for the existence of ring wall key joint, making bracket cannot be continuous along barrel hoop, the inner reinforcing bar configuration of bracket also cannot be communicated with; The Path of Force Transfer of bracket supporting being built by laying bricks or stones to liner shows slightly fuzzy.Meanwhile, the existence of ring wall key joint, the entirety for bracket place is anticorrosion, also form certain hidden danger.

Summary of the invention

The utility model provides a kind of coal-burning power plant's wet desulphurization single-drum chimney bracket node, solves the technical problem that existing single-drum chimney bracket Nodes corrosion leakage is serious.

The utility model solves above technical problem by the following technical programs:

A kind of coal-burning power plant's wet desulphurization single-drum chimney bracket node, comprise load-carrying members armored concrete barrel and liner, between load-carrying members armored concrete barrel and liner, be provided with glass wool cloth resin compounded layer and clay adhesive linkage, the medial surface of liner is provided with polytetrafluoroethylene impervious barrier layer.

The thickness of glass wool cloth resin compounded layer is 1.5-2 millimeter, and the thickness of clay adhesive linkage is 5-10 millimeter, and the thickness of polytetrafluoroethylene impervious barrier layer is 0.3 millimeter.

The present invention, by cancelling heat insulation layer to conventional bracket joint structure, cancels drip bridging piece and ring wall key joint; Increase polytetrafluoroethylene (PTFE) impervious barrier layer and vertical glass silk cloth resin compounded layer; Make to build liner by laying bricks or stones and directly physical protection is formed to this glass wool cloth resin compounded layer, to bear sweep of gases, opposing machinery and chemical attack; Glass wool cloth resin compounded layer is then to armored concrete barrel anti-corrosion protection in addition; Polytetrafluoroethylene (PTFE) impervious barrier layer then defines the impervious isolation of level to the acid solution flowing through bracket Nodes along barrel, and armored concrete barrel is still as load-carrying members.And bracket highlights more for the supporting role of building liner by laying bricks or stones, continuous print hoop bracket is stressed, power transmission is also distincter.The utility model bracket joint structure function is distinct, economy and facility, and efficiency of construction improves, reliably technical, remarkable in economical benefits.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in detail:

A kind of coal-burning power plant's wet desulphurization single-drum chimney bracket node, comprise load-carrying members armored concrete barrel 1 and liner 4, between load-carrying members armored concrete barrel 1 and liner 4, be provided with glass wool cloth resin compounded layer 2 and clay adhesive linkage 3, the medial surface of liner 4 is provided with polytetrafluoroethylene impervious barrier layer 5.

The thickness of glass wool cloth resin compounded layer 2 is 1.5-2 millimeter, and the thickness of clay adhesive linkage 3 is 5-10 millimeter, and the thickness of polytetrafluoroethylene impervious barrier layer 5 is 0.3 millimeter.

When implementing the utility model, first should ensure that the intensity of load-carrying members armored concrete barrel 1 reaches 100%, Wall Construction seam, template split bolt hole are obturaged, and internal-wall concrete moisture content must be less than 6%, inner surface Puttying flat smooth; After the assay was approved, glass wool cloth resin compounded layer 2 is implemented.Wherein, this glass wool cloth resin compounded layer 2 forms fiberglass based on resin and glass fiber dry goods, and adopt the vertical paving mode of segmentation, every layer of mode in strict accordance with upper pressure, seam should stagger anyhow, and the lap of splice all must not be less than 80 millimeters.Smooth, the sturdy bubble-free of paving should be kept; Glass wool cloth resin compounded layer 2 must carefully after the assay was approved, and that can carry out follow-up liner 4 builds and formed clay adhesive linkage 3 by laying bricks or stones.When building by laying bricks or stones, for realizing the densification of liner 4, except building block inner surface, acidproof impervious clay all should be smeared in all the other five faces of building block.Require completely to spread clay tack coat 3 between liner 4 and glass wool cloth resin compounded layer 2, to realize the reliably complete of clay tack coat 3.The clay of liner 4 horizontal joint and perps is full, bonding firmly, with load-carrying members armored concrete barrel 1 inside hold out against, the clay extruded in seam when building by laying bricks or stones will strike off at any time.Liner 4 is wanted to build by laying bricks or stones while with the careful jointing of the acidproof impervious clay of KP1, and the jointing degree of depth of anyhow stitching is 5-8 millimeter.Jointing should be tightly air tight.Polytetrafluoroethylene (PTFE) impervious barrier layer 5 is based on outsourcing polyfluortetraethylene plate, and two sections all with building liner compacting jam-packed by laying bricks or stones, and are pasted plain with organic silicon rubber.

The beneficial effects of the utility model are: (1) cancels heat insulation layer; first liner and barrel is made to be close together; by armored concrete barrel inner surface, glass wool cloth resin compounded layer is set; effectively can stop condensation smoke condensation acid accumulator penetration; corrosion is produced to outer tube wall, thus protects armored concrete Cylinder wall structure.Secondly, integrated engineering cost can be reduced, the reduction of erection time.Also effective guarantee is served to the total quality of chimney to a certain extent.Again, lacked a procedure, decreased the Quality Control factors such as the cross-operation in engineering construction, to a certain extent to the raising of integrated engineering construction quality, and control hidden leakage defect serves positive effect.(2) cancel the bridging piece that drips, first make flue gas stream at bracket Nodes smooth excessiveness, be beneficial to overall flue gas and promote.Secondly, also simplify the working procedure at bracket place, eliminate the potential risk at this position.In addition, for reduction cost, save the duration, also have good effect.(3) ring wall key joint is cancelled, bracket is highlighted more for the supporting role of building liner by laying bricks or stones, continuous print hoop bracket is stressed, power transmission is also distincter, and the portion's steel bar stress in bracket also can ensure continuously, is greatly improved along the overall stressed effect of hoop inside barrel for bracket.(4) vertical glass silk cloth resin compounded layer is increased; Make to build liner by laying bricks or stones and directly physical protection is formed to this glass wool cloth resin compounded layer, to bear sweep of gases, opposing machinery and chemical attack; Glass wool cloth resin compounded layer is then to armored concrete barrel anti-corrosion protection in addition; (5) increase polytetrafluoroethylene (PTFE) impervious barrier layer and then the impervious isolation of level is defined to the acid solution flowing through bracket Nodes along barrel.

Claims (2)

1. coal-burning power plant's wet desulphurization single-drum chimney bracket node, comprise load-carrying members armored concrete barrel (1) and liner (4), it is characterized in that, between load-carrying members armored concrete barrel (1) and liner (4), be provided with glass wool cloth resin compounded layer (2) and clay adhesive linkage (3), the medial surface of liner (4) is provided with polytetrafluoroethylene impervious barrier layer (5).

2. a kind of coal-burning power plant's wet desulphurization single-drum chimney bracket node according to claim 1, it is characterized in that, the thickness of glass wool cloth resin compounded layer (2) is 1.5-2 millimeter, the thickness of clay adhesive linkage (3) is 5-10 millimeter, and the thickness of polytetrafluoroethylene impervious barrier layer (5) is 0.3 millimeter.