CN205781560U - A kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage constructs - Google Patents

Abstract

The utility model discloses a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure: include that offset-type seals structure；Offset-type seals structure and includes offset-type sealing strip, and described offset-type sealing strip is between two flanges of air duct flange；Air duct flange be the flange being installed on airduct and its be angle steel flange or altogether plate flange, two flanges are parallel laying and are fixed by clamping structure therebetween；Clamping structure includes the card piece installing being installed on two described flanges；Described airduct is metal bellows；Offset-type sealing strip is open type sealing strip or closed type sealing strip；Open type sealing strip be Ω shape sealing strip and it include that arc sealing strip and two, left and right symmetry are connected to the side seal bar below two ends, arc sealing strip left and right；Closed type sealing strip is O shape sealing strip.This utility model simple in construction, reasonable in design and easy for installation, using effect is good, can effectively reduce the inleakage of ventilation and air conditioning system airduct.

Description

A kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage constructs

Technical field

This utility model belongs to ventilation and air conditioning system technical field of construction, especially relates to a kind of ventilation and air conditioning system and mends Repay type metal bellows Anti-air-leakage structure.

Background technology

Ventilation and air conditioning system is made up of ventilating system and air conditioning system, and wherein ventilating system is by blowing and discharging fan, airduct, airduct Parts, acoustic filter etc. form；And air conditioning system by air conditioner cold-heat source, air processing machine, airflow pipe conveying and is distributed, with And indoor temperature, humidity, air velocity and cleannes are automatically controlled by air-conditioning and the composition such as regulation.Now, air conditioner system Unite because wasted energy consumption of leaking out is undoubtedly a key component of building energy consumption.Ventilation and air conditioning system is because of system line The reason such as long, element is many, airduct is shell splicing construction and medium differential pressure is big, it is normal for leaking out on a small quantity, but excess Leak out, influence whether the realization of whole system function and a large amount of wastes of the energy.When ventilation and air conditioning system is carried out system debug Time, there will be severe most the phenomenon that least significant end air outlet adjusts not air-out, the most all can suspect device parameter selection of small or The reasons such as person's SR is bigger.

The tightness of ventilation and air conditioning system concerns energy-saving and cost-reducing and the guarantee of room ventilation quality, industry technology people for many years Member leaks out ventilation and air conditioning system always and consumption reduction is studied.Increasing scholar will reduce ventilation and air conditioning system energy consumption and make Main means for building energy conservation.Air conditioner air-line system air quantity leakage control technology is that unit in charge of construction executes at the scene The key measure that in work, control system is energy-conservation.Wherein, metal bellows machinery seaming forming technique, altogether plate Flange joint new technology and The discovery of the three big new techniques such as the integrated process technology of airduct and innovation, promote industry scientific development, improve China's metal The manufacturing technology of airduct and equipment, the lifting to metal bellows crudy serves qualitative leap, and system air leakage amount is also It is decreased obviously earlier above.

Persistently carry out energy saving building and green building along with country, ventilation and air conditioning system had higher requirement, Typically there is the requirement proposing air-line system unit air volume wasted work rate in GB50189-2015 " public building energy design standard "； In new edition GB50243 " code for acceptance of construction quality of conditioning works " that will promulgate, airduct leak test is no longer adopted The overall application " inleakage test " with " test of light leak method ", and propose construction technology to be verified.

Process by preliminary theoretic discussion with to metal bellows, group is looked into the quality tracing and science and technology installing overall process Newly, find to yet suffer from some problems controlling ventilation and air conditioning system aspect of leaking out, be mainly manifested in following five aspects: the One, existing research is unclear to the cognition of the main region of system air leakage；The second, metal bellows is produced the mass defect of each link Cognition on system air leakage impact is unclear；3rd, mechanism of leaking out key position lacks thorough theory analysis；4th, do not have Have and create the core key technology reducing system air leakage, simply take the passive behaviors such as closure to lack and actively adapt to medium spy Property and the active conduct of real current situation；5th, do much in terms of research detecting system leaks out device, and studying airtight principle And the aspect that tries out is considerably less.Thus, in order to adapt to national green building and the requirement of environmental protection and energy saving, improve China and ventilate empty Adjust industry technology quality level, it is ensured that the realization of heating ventilation and air-conditioning systemic-function, reduce energy waste, air conditioner system need to be controlled System leaks out this common quality defect and pertinacious disease, strives reaching to reduce whole system configuration rule under conditions of carrying same air dielectric Lattice and parameter, to reduce construction unit's investment and operating cost.

Utility model content

Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, it is provided that a kind of ventilation Air conditioning system with offset-type metal bellows Anti-air-leakage construct, its simple in construction, reasonable in design and processing and fabricating and easy for installation, make With effective, the inleakage of ventilation and air conditioning system airduct can be effectively reduced.

For solving above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of ventilation and air conditioning system compensates Type metal bellows Anti-air-leakage constructs, it is characterised in that: include that offset-type seals structure；Described offset-type seals structure and includes compensating Type sealing strip, described offset-type sealing strip is between two flanges of air duct flange；Described air duct flange is for being installed on wind Flange on pipe and its be angle steel flange or plate flange altogether, two described flanges are parallel laying and pass through therebetween clamping Structure or connecting bolt are fixed；Described clamping structure includes the card piece installing being installed on two described flanges；Described wind Pipe is metal bellows；

Described offset-type sealing strip is open type sealing strip or closed type sealing strip；Described open type sealing strip is that Ω shape is close Strip of paper used for sealing, the shape of cross section of described Ω shape sealing strip is Ω shape, and described Ω shape sealing strip includes arc sealing strip and two, left and right Symmetry is connected to the side seal bar below two ends, arc sealing strip left and right；Described closed type sealing strip is O shape sealing strip, described The shape of cross section of O shape sealing strip is O shape；Described offset-type sealing strip is installed between two described flanges.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described offset-type is close Strip of paper used for sealing laying for a week along described air duct flange；It is provided with multiple tracks recessed on the lateral wall of two described side seal bars Groove；

The external diameter of described O shape sealing strip is Φ 6mm～Φ 16mm and its wall thickness are 1mm～2.5mm.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described air duct flange, Described offset-type sealing strip and described clamping structure or connecting bolt form Flanged Connection System；

Described airduct includes main pipe and the arm being connected with described main pipe, logical between described arm and described main pipe Crossing connection pipe fitting to be attached, described connection pipe fitting is elbow, tee T or four-way pipe；Described main pipe and described arm by Multiple airduct tube couplings are spliced from front to back；

In described main pipe and described arm between adjacent two described airduct tube couplings and described connection pipe fitting is with described All it is attached by described Flanged Connection System between main pipe and described arm；Described main pipe and described arm are logical Airduct；Two the described flanges being connected to the described Flanged Connection System between adjacent two described airduct tube couplings are fixed respectively On the connection end of two described airduct tube couplings, it is connected to the described Flange joint between described connection pipe fitting and described ventilation duct Two described flanges of system are separately fixed on the connection end of described connection pipe fitting and described ventilation duct.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described air duct flange For angle steel flange；Two described flanges of described angle steel flange are and are fixed on airduct tube coupling or the connection of described connection pipe fitting Right angle angle steel outside end, the connection end of described airduct tube coupling or described connection pipe fitting is provided with and is fixed on described right angle angle steel The flanging of inner side；The arc sealing strip of described Ω shape sealing strip is positioned at outside flanging, and described arc sealing strip is installed in described angle Between two described flanges of steel flange, the side seal bar of described Ω shape sealing strip is installed in inside two described flanges Flanging between；Described O shape sealing strip is installed between the flanging inside two described flanges.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described air duct flange For angle steel flange；It is fixed by connecting bolt between two described flanges, the shank of bolt of described connecting bolt and flange The perpendicular laying in limit；Described connecting bolt is positioned at outside described offset-type sealing strip.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described air duct flange For common plate flange；It is provided with the arc sealing strip for Ω shape sealing strip or O on two described flanges of described plate flange altogether The sealing strip mounting groove that shape sealing strip is installed, described sealing strip mounting groove is the groove that flange is bent outwardly formation.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described airduct tube coupling For rectangular air duct and its by one piece of sheet metal through bending after be spliced or by two pieces of described sheet metals through bending after splice Form；

Splicing seams on described airduct tube coupling is laid along the longitudinal length of airduct tube coupling；Described splicing seams is for closing Joint close and its be seaming seam, described seaming seam use seaming be list flat mouth seaming；

When described airduct tube coupling is spliced after bending by one piece of described sheet metal, described airduct tube coupling is monolithic Sheet material airduct tube coupling, described seaming seam quantity be one and its be laid on a described long limit of airduct tube coupling；

When described airduct tube coupling is spliced after bending by two pieces of described sheet metals, the quantity of described seaming seam is Article two, and two described occlusion seam be laid in respectively on two described long limits of airduct tube coupling；

Described offset-type sealing strip is divided into the offset-type sealing strip sections of 4 vertical bar shapeds, and adjacent two described offset-types are close All it is attached by a sealing strip joint between strip of paper used for sealing sections.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described single flat mouth is stung Mouth includes inner side U-shaped mouth and the outside U-shaped mouth being engaged with inner side U-shaped mouth, and the rear side of described outside U-shaped mouth is provided with inner side U Shape mouth carries out spacing gear platform, described gear platform be by outside U-shaped mouth on rear side of described sheet metal curve inwardly formed boss.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described airduct tube coupling For rectangular air duct, circular duct or elliptical air；The quantity of described clamping structure is multiple and it is along described air duct flange Within one week, lay from front to back.

Above-mentioned a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage structure, is characterized in that: described air duct flange For common plate flange；Being fixed by described clamping structure between two described flanges, described card piece installing is for being installed on two Card article outside described flange, the outer end of two described flanges is the dop through being bent to form；Described clamping structure is Jackscrew clamping structure, described jackscrew clamping structure also includes jackscrew, and one end of described card article is solid for card dress end and its other end Fixed end, the described card dress end of described card article is the grab through being bent to form, and described grab is installed on the card of a described flange On head, described jackscrew is arranged on the described fixing end of card article, and the described fixing end of card article is fixedly secured to separately by described jackscrew Outside one described flange.

This utility model compared with prior art has the advantage that

1, the simple in construction of used ventilation and air conditioning system offset-type airduct Anti-air-leakage structure, reasonable in design and processing and fabricating Simplicity, input cost is relatively low.

2, the offset-type gasket structure used is simple, process easy and economical and practical, good sealing effect, has sealing Compensate function.This offset-type sealing strip includes open type sealing strip and closed type sealing strip two kinds, fixing simplicity, and using effect Good.

3, simple in construction, reasonable in design and processing and fabricating is easy, input cost is relatively low.

4, used the simple in construction of single flat mouth seaming and opening convenient, mutually spliced conveniently.

5, the single flat mouth seaming used includes inner side U-shaped mouth and the outside U-shaped mouth being engaged with inner side U-shaped mouth, outside U-shaped The rear side of mouth is provided with and inner side U-shaped mouth is carried out spacing gear platform, has both overcome longitudinally guiding when the single flat mouth seaming of tradition shapes Line midway disappears and easy sideslip, causes airduct concentric reducer and flange assembling difficulty and flange excesssive gap even sheet material occur The problem such as scrap, the problem easily occurring after effectively solving again single flat mouth seaming joint close breaking off relations, thus can effectively increase occlusion Intensity, and can ensure that sealing effectiveness, can effectively solve to use on existing rectangular metal airduct joint angle seaming or press-button type seaming Time exist can not eliminate sheet material interlayer spacings, leak out in stacking gap, sealing effectiveness difference etc. problem.

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Accompanying drawing explanation

Fig. 1-1 by existing metal bellows corner stitch the structural representation of employing press-button type seaming.

Fig. 1-2 by existing metal bellows corner stitch the structural representation of employing joint angle seaming.

Fig. 1-3 is used the structural representation of single flat mouth seaming by existing metal bellows splicing seams.

Fig. 1-4 is used the structural representation of single flat mouth seaming by this utility model.

Fig. 2-1 is the structural representation of plate Flanged Connection System altogether between existing metal bellows tube coupling.

Fig. 2-2 is the structural representation of angle steel flange connection system between existing metal bellows tube coupling.

Fig. 3-1 is the cross-sectional structure schematic diagram of this utility model Ω shape sealing strip.

Fig. 3-2 is the cross-sectional structure schematic diagram of this utility model O shape sealing strip.

Fig. 4-1 is the end construction schematic diagram of this utility model monolithic sheet material airduct tube coupling.

Fig. 4-2 is the end construction schematic diagram of this utility model two boards material airduct tube coupling.

Fig. 5-1 is the connection status schematic diagram of this utility model Ω shape sealing strip plate flange together.

Fig. 5-2 is the connection status schematic diagram of this utility model Ω shape sealing strip and angle steel flange.

Fig. 5-3 be this utility model Ω shape sealing strip plate flange together with the use of time compensating coefficient schematic diagram.

Fig. 5-4 be this utility model Ω shape sealing strip with angle steel flange with the use of time compensating coefficient schematic diagram.

Fig. 6-1 is the connection status schematic diagram of this utility model O shape sealing strip plate flange together.

Fig. 6-2 is the connection status schematic diagram of this utility model O shape sealing strip and angle steel flange.

Fig. 6-3 be this utility model O shape sealing strip plate flange together with the use of time compensating coefficient schematic diagram.

Fig. 6-4 be this utility model O shape sealing strip with angle steel flange with the use of time compensating coefficient schematic diagram.

Fig. 7 is the installation position schematic diagram of L-shaped girth member outside this utility model flange.

Fig. 8 is the connection status schematic diagram of this utility model O shape sealing strip and sealing strip joint.

Fig. 9 is the structural representation of this utility model sealing strip joint.

Figure 10 is the processing method FB(flow block) of this utility model monolithic sheet material airduct tube coupling.

Figure 11 is the structural representation of the sheet material to be processed of this utility model monolithic sheet material airduct tube coupling.

Figure 12 is adding after the inner side U-shaped mouth of this utility model monolithic sheet material airduct tube coupling machines with outside U-shaped mouth Work view.

Description of reference numerals:

1 airduct tube coupling；2 flanges；2-1 dop；

3 O shape sealing strips；4 flangings；5 Ω shape sealing strips；

5-1 arc sealing strip；5-2 side seal bar；6 connecting bolts；

7 press-button type seamings；8 fastening bolts；9 mounting grooves；

10-1 card article；10-2 jackscrew；11 single flat mouth seamings；

U-shaped mouth inside 11-1；U-shaped mouth outside 11-2；11-3 keeps off platform；

12-1 is engaged limit；12-2 flange processing limit；12-3 otch；

12-4 tube coupling body sheet material；13 joint angle seamings；

15 L-shaped girth members；16 sealing strip joint 17 alligator clamps.

Detailed description of the invention

As shown in Fig. 5-1, Fig. 5-2, Fig. 6-1 and Fig. 6-2, this utility model includes that offset-type seals structure；Described compensation Type seals structure and includes offset-type sealing strip, and described offset-type sealing strip is between two flanges 2 of air duct flange；Described Air duct flange be the flange being installed on airduct and its be angle steel flange or altogether plate flange, two described flanges 2 are in parallel cloth And if being fixed by clamping structure or connecting bolt 6 therebetween；Described clamping structure includes being installed on two described methods Card piece installing on blue limit 2；Described airduct is metal bellows.

Described offset-type sealing strip is open type sealing strip or closed type sealing strip；As shown in figure 3-1, described open type is close Strip of paper used for sealing is Ω shape sealing strip 5, and the shape of cross section of described Ω shape sealing strip 5 is Ω shape, and described Ω shape sealing strip 5 includes that arc is close Strip of paper used for sealing 5-1 and two, left and right symmetry are connected to the side seal bar 5-2 below arc sealing strip about 5-1 two ends；Such as Fig. 3-2 institute Showing, described closed type sealing strip is O shape sealing strip 3, and the shape of cross section of described O shape sealing strip 3 is O shape；Described offset-type is close Strip of paper used for sealing is installed between two described flanges 2.

In the present embodiment, described offset-type sealing strip laying for a week along described air duct flange.

Actual add man-hour, the lateral wall of two described side seal bar 5-2 is provided with multiple tracks groove.

In the present embodiment, the described groove that the lateral wall of described side seal bar 5-2 is arranged is rectangular channel, and multiple tracks institute Stating groove is parallel laying.

Thus, the outer side wall surface of two described side seal bar 5-2 is corrugated surface, outside described arc sealing strip 5-1 Sidewall surfaces is bright finish.Further, the interior side-wall surface of described Ω shape sealing strip 5 is bright finish.

Time actually used, described air duct flange, described offset-type sealing strip and described clamping structure or connecting bolt 6 form Flanged Connection System；

Described airduct includes main pipe and the arm being connected with described main pipe, logical between described arm and described main pipe Crossing connection pipe fitting to be attached, described connection pipe fitting is elbow, tee T or four-way pipe；Described main pipe and described arm by Multiple airduct tube couplings 1 are spliced from front to back；

In described main pipe and described arm between adjacent two described airduct tube couplings 1 and described connection pipe fitting is with described All it is attached by described Flanged Connection System between main pipe and described arm；Described main pipe and described arm are logical Airduct；Two described flanges 2 of the described Flanged Connection System being connected between adjacent two described airduct tube couplings 1 are solid respectively It is scheduled on the connection end of two described airduct tube couplings 1, is connected to the described flange between described connection pipe fitting and described ventilation duct Two described flanges 2 of connection system are separately fixed on the connection end of described connection pipe fitting and described ventilation duct.

In the present embodiment, as shown in Fig. 5-1 and Fig. 6-1, described air duct flange is plate flange altogether；The two of described plate flange altogether The sealing strip peace of the arc sealing strip 5-1 for Ω shape sealing strip 5 or the installation of O shape sealing strip 3 it is provided with on individual described flange 2 Tankage 9, described sealing strip mounting groove 9 is the groove that flange 2 is bent outwardly formation.

Described sealing strip mounting groove 9 is arcuate groove, and the external diameter of described arc sealing strip 5-1 and O shape sealing strip 3 is all higher than close The internal diameter of strip of paper used for sealing mounting groove 9.

In the present embodiment, described airduct tube coupling 1 is rectangular air duct.

Time actually used, described airduct tube coupling 1 can also be the other type of airduct such as circular duct, elliptical air.

Actual add man-hour, described airduct tube coupling 1 and its be spliced or by two pieces of institutes after bending by one piece of sheet metal State sheet metal to be spliced after bending；

Splicing seams on described airduct tube coupling 1 is laid along the longitudinal length of airduct tube coupling 1；Described splicing seams is Closure seam and its be seaming seam, described seaming seam use seaming be list flat mouth seaming 11；

When described airduct tube coupling 1 is spliced after bending by one piece of described sheet metal, described airduct tube coupling 1 is single Block sheet material airduct tube coupling, described seaming seam quantity be one and its be laid on a described long limit of airduct tube coupling 1；

When described airduct tube coupling 1 is spliced after bending by two pieces of described sheet metals, the quantity of described seaming seam It is that two and two described occlusion seams are laid on two described long limits of airduct tube coupling 1 respectively.

Four sidewalls of described airduct tube coupling 1 include two broad side walls and two narrow sidewalls, and two described broad side walls are right Claiming laying and two described narrow sidewalls symmetrically to lay, described long limit is the described broad side walls of airduct tube coupling 1.

In the present embodiment, before and after described airduct tube coupling 1, both sides are provided with flange 2, described flange 2 and airduct pipe Saving 1 perpendicular laying, described flange 2 is integrated with airduct tube coupling 1 processing and fabricating.

Actual adding man-hour, described airduct tube coupling 1 is integrated with flange 2 processing and fabricating, and flange 2 is described plate method altogether Blue farad limit (also referred to as ring flange).

In the present embodiment, as shown in figure 12, front side and the rear side of four sidewalls of described airduct tube coupling 1 is provided with flange Limit 2.

In the present embodiment, as shown in Fig. 4-1, described airduct tube coupling 1 is spliced after bending by one piece of sheet metal, institute State the quantity of seaming seam be one and its be positioned on a described long limit of airduct tube coupling 1, and this airduct tube coupling 1 is monolithic sheet material Airduct tube coupling.

Further, described airduct tube coupling 1 includes tube coupling body, and before and after described tube coupling body, two ends are provided with described in one The flange 2 of plate flange altogether, two described flanges 2 that described tube coupling body rear and front end is arranged symmetrically are laid.

Further, described seaming stitches the zone line on the described long limit being positioned at airduct tube coupling 1.

Actual adding man-hour, as shown in the Fig. 4-2, described airduct tube coupling 1 can also be by two pieces of described sheet metals after bending Being spliced, the quantity of described seaming seam is two, and two described seaming seams lay respectively at two described long limits of airduct body 1 On.Further, two described seamings seam lays respectively at the zone line on two described long limits of airduct body 1.

In the present embodiment, as Figure 1-4, described single flat mouth seaming 11 include inner side U-shaped mouth 11-1 and with inner side U-shaped mouth The outside U-shaped mouth 11-2 of 11-1 occlusion, the rear side of described outside U-shaped mouth 11-2 is provided with and carries out spacing to inner side U-shaped mouth 11-1 Gear platform 11-3, described gear platform 11-3 be by outside U-shaped mouth 11-2 on rear side of described sheet metal curve inwardly formed boss.

In the present embodiment, described gear platform 11-3 is arc.Actual adding man-hour, described gear platform 11-3 can also be other shape Shape.

Further, the space D between in the middle part of described gear platform 11-3 and U-shaped mouth 11-2 front end, outside is 12mm～18mm.

In the present embodiment, the space D in the middle part of described gear platform 11-3 and between U-shaped mouth 11-2 front end, outside is 14.5mm.

Actual add man-hour, can according to specific needs, to the spacing in the middle part of gear platform 11-3 and between U-shaped mouth 11-2 front end, outside D is for adjusting accordingly.

As shown in Fig. 5-1 and Fig. 6-1, it is fixed by described clamping body between two described flanges 2, described card Piece installing is to be installed on the card article 10-1 outside two described flanges 2, and the outer end of two described flanges 2 is through being bent to form Dop 2-1；Described clamping structure is jackscrew clamping structure, and described jackscrew clamping structure also includes jackscrew 10-2, described card article One end of 10-1 is fixing end for card dress end and its other end, and the described card dress end of described card article 10-1 is the card through being bent to form Hook, described grab is installed on the dop 2-1 of a described flange 2, and described jackscrew 10-2 is arranged on the described of card article 10-1 On fixing end, the described fixing end of card article 10-1 is fixedly secured to outside another described flange 2 by described jackscrew 10-2.

In the present embodiment, described card article 10-1 is L-shaped.

Actual adding man-hour, described card article 10-1 can also use other shapes of card dress bar.

In the present embodiment, described jackscrew 10-2 and the perpendicular laying of flange 2.

In the present embodiment, the quantity of described clamping structure is multiple and its entering from front to back for one week along described air duct flange Row is laid.

As shown in Figure 10, when described monolithic sheet material airduct tube coupling is processed, comprise the following steps:

Step one, sheet metal cut: according to inner side U-shaped mouth 11-1 and the structure of outside U-shaped mouth 11-2 on airduct tube coupling 1 With size, use plate cutting equipment that the both sides up and down of described rectangular metal sheet material are cut respectively, it is thus achieved that two occlusions Limit 12-1；Further, according to structure and the size on airduct tube coupling 1 upper flange limit 2, use described plate cutting equipment to described rectangle Before and after sheet metal, both sides are cut respectively, it is thus achieved that the flange processing limit 12-2 of two described flanges 2；Meanwhile, according to The installation position of four ribs on airduct tube coupling 1, processes at two described flanges and is respectively cut four in parallel laying on the 12-2 of limit Otch 12-3, it is thus achieved that the sheet material to be processed of airduct tube coupling 1, refer to Figure 11；

Described sheet material to be processed include tube coupling body sheet material 12-4, two be positioned at described tube coupling body sheet material 12-4 upper and lower two The occlusion limit 12-1 of side and two lay respectively at the flange processing limit 12-2 of both sides before and after described tube coupling body sheet material 12-4；

Step 2, seaming are processed: in step one two described occlusion limit 12-1 are carried out seaming processing respectively, it is thus achieved that inner side U-shaped mouth 11-1 and outside U-shaped mouth 11-2；

Step 3, flange processing limit processing: in step one two described flange processing limit 12-2 are processed respectively, and Obtain two described flanges 2；

Step 4, tube coupling body sheet material bend: four described otch on the processing limit 12-2 of flange described in step one 12-3, carries out four bendings, it is thus achieved that the tube coupling body of airduct tube coupling 1 to tube coupling body sheet material 12-4；

Step 5, seaming joint close are also compacted: by inner side U-shaped mouth 11-1 and outside U-shaped mouth 11-2 snapping described in step 2, And use compacting machine that inner side U-shaped mouth 11-1 and outside U-shaped mouth 11-2 is carried out compaction treatment, complete the processed of airduct tube coupling 1 Journey.

In the present embodiment, step 3 carries out flange processing limit and adds man-hour, use rolling technology once to be processed by flange 2 Molding.

Actual adding man-hour, the seaming of described airduct tube coupling 1 seams to be put on the corner, and at described flange 2 after joint close Corner, inner side fix L-shaped girth member 15 respectively.In the present embodiment, described L-shaped girth member 15 is for being assembled in inside flange 2 four It is fixed by fixing bolt between the corner brace at angle, and described corner brace and flange 2, refers to Fig. 7.

Further, for capping described occlusion seam, the also back side at flange 2 devises stiffening plate, and in stiffening plate region Use and make stiffening plate and flange 2 carry out multiple spot impermeable riveting without rivet technique.

As shown in Figure 8, for processing simplicity, described offset-type sealing strip is divided into the offset-type sealing strip sections of 4 vertical bar shapeds, All it is attached by a sealing strip joint 16 between adjacent two described offset-type sealing strip sections.Described sealing strip joint 16 is 90 ° of elbows, and the offset-type sealing strip sections of 4 vertical bar shapeds is formed by connecting a square by 4 described sealing strip joints 16 The spliced sealing strip of shape, described sealing strip joint 16.As it is shown in figure 9, described sealing strip joint 16 be arc-shaped joint and its before and after Two ends are provided with the interface installed for described offset-type sealing strip sections.Described sealing strip joint 16 is an a size of Φ The hollow pipe of 9mm × 15mm and 90 ° of elbows that its radius is 12mm.Four described offset-type sealing strip sections press airduct tube coupling 1 Specification block after, insert respectively in sealing strip joint 16, i.e. one sealing chain supporting with described air duct flange of composition.

So, use this utility model by being respectively provided with sealing strip joint between the corner of two described flanges 2 16, eliminated adpting flange corner in traditional handicraft use fluid sealant to fill up and to ventilation and air conditioning system and environment Drawback.In order to enable described corner brace to accommodate sealing strip joint 16, in described corner brace, correspondence has and pacifies for sealing strip joint 16 The arc groove of dress.Meanwhile, on each described flange 2, a little fluid sealant of corresponding painting, is bonded at the sealing chain assembled On flange 2, each interface only bonds on flange 2, and described air duct flange group is to the easiest.

Actual adding man-hour, as shown in figure 3-1, the profile of described Ω shape sealing strip 5 is Ω shape, the thickness of Ω shape sealing strip 5 Uniformly and its thickness is 1.5mm, the material of described Ω shape sealing strip 5 be rubber and its there is certain elasticity.Meanwhile, described side It is 1mm and width is 0.2mm (cross sectional dimensions of the most described rectangular recess) that the lateral wall of portion sealing strip 5-2 is designed with width Strip ripple, with binding agent on the lateral wall of described side seal bar 5-2.Time actually used, described Ω shape sealing strip 5 passes through The medial wall bonding of the flange 2 of the described altogether plate flange outside side seal bar 5-2, sealing strip material according to code requirement with Pumped (conveying) medium is supporting.

In the present embodiment, the distance of the tube wall away from airduct tube coupling 1 of described mounting groove 9 is 11.5mm.Further, actual processing Time, can according to specific needs the mounting groove 9 installation position on flange be adjusted accordingly.

Time actually used, the described Ω shape sealing strip 5 obturation effect under the described normal connection status of plate flange altogether is superior. The internal diameter of the arc sealing strip 5-1 of described Ω shape sealing strip 5 is Φ 5.8mm, the internal diameter of described mounting groove 9 and arc sealing strip 5- The external diameter of 1 is consistent.Therefore, as shown in fig. 5-1, under the described normal connection status of plate flange altogether, the two of described Ω shape sealing strip 5 Individual described side seal bar 5-2 is pressed and together, and arc sealing strip 5-1 is tightened on flange 2 set peace In tankage 9, form hollow bean sprout shape such as and seal route.Because of the elastic recovery characteristic effect of Ω shape sealing strip 5, with two flanges Mounting groove 9 inwall on 2 fits tightly.Further, joint place is arc-shaped sealed pathway, and sealing effectiveness is than traditional strip sealing strip Significantly improve.

It addition, under described plate flange exception connection status altogether, described Ω shape sealing strip 5 shows the most compensatory Energy.As shown in Fig. 5-3, because processing, assemble, install, safeguard and running between two flanges 2 of described plate flange altogether In occur the reason such as error, deformation can not keeping parallelism and time tenesmus occurs, between two flanges 2 on airduct tube coupling 1 top In closed configuration between two flanges 2 of opening-like state and airduct tube coupling 1 bottom.

Between two flanges 2 during opening-like state, two described side seal bar 5-2 of described Ω shape sealing strip 5 Opening, pumped (conveying) medium enters Ω shape sealing strips 5 along the spaces in the middle of two described side seal bar 5-2, and under pressure Make Ω shape sealing strip 5 inner chamber fill and be close to flange 2 medial wall of described plate flange altogether.Further, pumped (conveying) medium pressure is the biggest, Pasting the tightest, sealing effectiveness is the best；

Time between two flanges 2 in closed configuration, two flanges 2 are by two described sidepieces of Ω shape sealing strip 5 Sealing strip 5-2 compresses, and two described side seal bar 5-2 seal as traditional strip gasket bar, but Ω shape The arc sealing strip 5-1 of sealing strip 5, under foregoing elastic recovery characteristic effect, plays double sealing effect；

So, between two described flanges 2 from top to bottom in by opening to the gradually transitive state remained silent, its sealer Reason is also progressively switch to by two described sidepieces of Ω shape sealing strip 5 main sealed by the inner chamber of Ω shape sealing strip 5 Sealing strip 5-2 and inner chamber play associating sealing function.

When the spacing of particularly two described flanges 2 is more than minimum seal distance, traditional sealing strip substantially loses close Envelope function.But owing to the radius of the arc sealing strip 5-1 of Ω shape sealing strip 5 is more than the radius of mounting groove 9, arc sealing strip 5-1 Certain length is had, even if two described airduct tube couplings 1 pull open a determining deviation, two described flanges 2 in the savings of mounting groove 9 part Between build " curved wall " of one leakproof all the time, ensured that sealing function renews.

Actual adding man-hour, the external diameter of described O shape sealing strip 3 is Φ 6mm～Φ 16mm and its wall thickness are 1mm～2.5mm.

In the present embodiment, the profile of described O shape sealing strip 3 is O shape, and the external diameter of O shape sealing strip 3 is Φ 12mm and its wall thickness For 1.5mm, smooth outer surface.Thus, the profile of described O shape sealing strip 3 is simple, materials save and low cost, actual practical.

Time actually used, the taping process of described O shape sealing strip 3 is simple and efficient, only need to be at described plate flange altogether during installation A described flange 2 on the middle inside of mounting groove 9 and three, two ends position temporary adhesion fix, glue consumption ratio Ω shape sealing strip 5 reduces more than 98%, more energy-conserving and environment-protective.

Time actually used, the described O shape sealing strip 3 obturation effect under the described normal connection status of plate flange altogether is superior. As in Figure 6-1, under the described normal connection status of plate flange altogether, O shape sealing strip 3 squeezes the described mounting groove 9 being total to plate flange Under pressure effect, upper and lower both sides are all extruded, and are formed such as dish cross section sealing route.Because of the elastic recovery characteristic effect of O shape sealing strip 3, Fit tightly with the medial wall of the mounting groove 9 arranged on two flanges 2, and joint place is curve-seal path, sealing effectiveness Significantly improve than conventional band sealing strip.

It addition, under described plate flange exception connection status altogether, described O shape sealing strip 3 shows and significantly compensates performance. As shown in Fig. 6-3, because processing, assemble, install, safeguard and in running between two flanges 2 of described plate flange altogether Occur the reason such as error, deformation can not keeping parallelism and time tenesmus occurs, between two flanges 2 on airduct tube coupling 1 top in Open state.Pumped (conveying) medium acts on outside the inner circumferential of O shape sealing strip 3, makes O shape sealing strip 3 be adjacent to install under pressure The upper portion side wall of groove 9, the flap portion of O shape sealing strip 3 is then got in the gap between two described flanges 2, is formed such as lamp Cover cross section sealing route.Equally, because the external diameter of O shape sealing strip 3 is more than the internal diameter of mounting groove 9, though two described airduct tube couplings 1 Pulling open a determining deviation, O shape sealing strip 3 is laterally flattened by pumped (conveying) medium, and the flap portion of O shape sealing strip 3 gets into two described methods Between blue limit 2, the height in gap decreases, but the upper portion side wall of the mounting groove 9 arranged on flange 2 the most tightly blocks O shape Sealing strip 3, because this compensatory michanism of O shape sealing strip 3 makes its sealing function will continue to keep.

According to general knowledge known in this field, except supervisor (i.e. air main) and arm in the media conveying path of ventilation and air conditioning system (i.e. branch's airduct) outward, also by by elbow, come that back bending, reducing be curved, tee T, four-way pipe etc. are combined by actual demands of engineering Pipe fitting, be installed on airduct in order to regulate air quantity and close the air-valve of indivedual arm and prevent the incoming indoor of noise Various acoustic filters, eventually arrive at air port.In addition to supervisor, arm and various pipe fitting, other system unit and accessory are typically specially Industry manufacturer production, its materials thickness and crudy all high one to two class than airduct, the airtight performance of housing and connection The flatness of flange can be trusted substantially, the subject matter existed is system unit and accessory two end flanges mostly be band steel flange or Angle steel flange, and the flange installed on airduct mostly is common plate flange.It is made up of the media conveying path of above-mentioned ventilation and air conditioning system Analyzing, region of mainly leaking out is positioned on supervisor, arm and various pipe fitting.It addition, the operating pressure of ventilation and air conditioning system is along pipeline Medium flows to be gradually lowered, and the static pressure of system end arm is minimum, and relative inleakage is the least, therefore the research of air-line system inleakage Based on main pipe, arm is auxiliary.Wherein, main pipe includes supervisor and main.Popular says, supervisor refers to ventilation and air conditioning system The standpipe of middle caliber maximum or horizontal pipe, main refers to that caliber is less than the horizontal pipe of supervisor；Arm refers to be connected with main Until the pipeline of end, time actually used, arm.

Reasons of air leakage with regard to metal bellows ontological existence is analyzed below: the main pipe in metal bellows is air conditioner Carrying the important component part of air in system, usage amount is the biggest.Metal bellows uses roll bending to be raw material mostly, through plate face Leveling, rolling reinforcement, hydraulic punch cut flange square opening and sharp-crested, sheet material cut-out, the rolling of airduct longitudinal direction closure seam seaming, flange Molding, longitudinal corner flanging, longitudinal closure seam joint close and and the technical process such as flange angle assembling, make a joint joint size, specification, The tube coupling that shape is different.It is clear that the airduct body course of processing can produce longitudinal corner seam (or longitudinal closure seam) And laterally tube coupling combination of interfaces is stitched.Longitudinal corner seam varies in size most three with airduct specification, and longitudinal closure seam only Bar.During for big specification airduct because needing multiple board material splices, also has vertically and horizontally splicing seams.

Metal bellows corner seam (or closure seam) has three kinds of methods of attachment: welds, rivet and seaming connection.Because seaming connects Technique has that intensity is high, tightness is good, seaming seam continuous uniform, do not destroy plate surface quality, good looking appearance, be easily achieved machine The outstanding features such as tool processing and obtain extensively application.

As shown in Fig. 1-1, Fig. 1-2 and Fig. 1-3, common corner seam (or closure seam) seaming form is joint angle seaming 13 With press-button type seaming 7, common splicing seams seaming form is single flat mouth seaming.Wherein, the feature of press-button type seaming 7 is by side Wooden bat is beaten and is i.e. completed plate corner seam connection after single port is inserted twoport, but after there is twoport shaping because of this seaming, insert port is normal Close, single port inserts defects such as being difficult to, sealing effectiveness does not ensure, coupling stiffness is low, is only used for medium low pressure system.For ingredient Single flat mouth seaming joint close after, the most also want the hand-held lumps of wood or use special equipment complete seaming joint close operation.Single flat mouth seaming It is widely used because of the feature such as splicing seams four ply, bonding strength height, sealed pathway length, good sealing effect after joint close.

Joint angle seaming 13 is because of insert port normally opened (insert port gap 1～1.2mm) after the shaping of double seamings, and single port inserts relatively Convenient, but after single, double seaming snap-in, also want the hand-held lumps of wood or electric hand tool to pull cork cot down and complete seaming joint close.For a long time with Come, it is believed that joint angle seaming 13 has coupling stiffness height, sealed pathway length, the sealing effectiveness advantage such as reliably and is widely used in High, medium and low voltage system.But by deeply examination and on-site verification, joint angle seaming 13 because of version, flow forming process and The impact of joint close process, its sealing effectiveness is the most perfect.Especially with airduct materials thickness for 0.75mm as separation, leakage Blower fan reason presents two kinds of multi-forms.

Wherein, as sheet metal thickness≤0.75mm, only take the sealing structure measure that sheet material seaming connects, leaking out of airduct Measure relatively large.This is because seaming former is according to the upper thickness limit in processing sheet metal thickness scope 0.5mm～1.2mm 1.2mm design, after the sheet material seaming molding that 0.5mm～0.75mm is thick, arc radius causes the most greatly seaming position elastic big, double The gap of mouth insert port existence >=1mm, and the stretcher strain that during twoport seaming molding, cork cot produces is because of follow-up pressurized mistake Surely wrinkling (also known as side wave) occurs.Cork cot is the most only pulled down and can not by the most hand-held lumps of wood or hand electric linking machine Eliminating sheet material interlayer spacings, sheet material seal length is only cork cot length, but because of waveform wrinkle, cork cot can not after stretching Shortening, there will be interrupted phenomenon of dehiscing after joint close, the expection relying on cork cot to seal seriously gives a discount, thus corner seam (or Closure seam) place leaks out seriously；Above-mentioned reason be use thin plate processing joint angle seaming 13 as corner seam (or closure seam) time because of Stacking gap is slack and undisciplined, the interrupted opening and closing of cork cot etc. causes the basic reason leaked out.

And as sheet metal thickness >=0.75mm, because timber intensity increases, the side wave phenomenon that during seaming molding, cork cot produces Reduce.Further, single port can not be adjacent to completely with twoport both sides sheet material after inserting, and because cork cot length (i.e. limit lower limb) is only About 8mm, rigidity is relatively big, and cork cot all can not be pulled down 90 ° and single port by the most hand-held lumps of wood or hand electric linking machine completely Being close to, the second barrier portion relying on cork cot to seal is out of control, can not eliminate sheet material interlayer spacings during same joint close, Thus corner seam (or closure seam) is under system pressure-bearing environment and still suffers from air leakage phenomena；Above-mentioned reason is that slab uses joint angle Seaming 13 as during corner seam (or closure seam) because cork cot slenderness ratio is little, rigidity is big, after joint close etc. can not completely fore shaft and leak The basic reason of wind.

As shown in the above, rectangular metal airduct body corner seam (or closure seam) uses joint angle seaming 13 to connect, When sheet metal thickness is in the range of 0.5mm～1.2mm, only rely on sealing structure, all can not eliminate hidden danger of leaking out.This utility model In, use the side carrying out sealing after being coated with fluid sealant or patch sealant tape after seaming seam positive pressure side removes surface dirt and greasy dirt Method, sealing effectiveness can be improved.But along with having the cold and hot conversion blowing brush and medium temperature for a long time of pressure medium, fluid sealant Or sealant tape can gradually come off or aging, and fluid sealant or the production of sealant tape and use natural environment and Interior Space Gas quality all has certain pollution.Described positive pressure side refers near the side of ventilating system entrance (i.e. near air inlet one Side).

Flanged connection system between metal bellows body and airduct tube coupling (the especially airduct tube coupling in main pipe) is to leak out Two importances, for metal bellows body, reasons of air leakage essentially consist in corner seam (also referred to as closure seam) or splicing Seam.

According to general knowledge known in this field, for flanged connection system (also referred to as flange between airduct tube coupling in ventilation and air conditioning system Connection system) for, mainly by sealing gasket and multiple Flange joint zero between tube coupling adpting flange (also referred to as union flange), flange Parts etc. form.Traditional Flanged Connection System is between the flange (also referred to as ring flange dish) of airduct tube coupling, uses strip close Packing seals to be revealed, as shown in Fig. 2-1 and Fig. 2-2 with medium in reducing pipe.This sealing structure is each group of Flanged Connection System Member shape is well-behaved, process assembling standard, installation meets the requirements, ventilation and air conditioning system can play sealing when being in static state well Function.

But in Practical Project is put into practice, due to component parts each in Flanged Connection System processing, assemble, install, maintenance etc. Implement link and ventilation and air conditioning system running exist factors, cause the sealing property part of Flanged Connection System to be lost Losing, medium amount of leakage increases.

Existing Flanged Connection System mainly has angle steel flange connection system and is total to plate Flanged Connection System two kinds.Wherein, Flange in angle steel flange connection system is angle steel flange, and the flange in plate Flanged Connection System is plate flange altogether altogether.Angle steel method Orchid refers to carry out rolling up curved by special equipment by angle steel or angle bar, and the angle steel after processing remains in that two limits of angle steel are vertical It is 90 °, without turn-ups, and there is no fold.Plate flange is mainly by corner brace, banjo clip altogether, and the ring flange group being connected with airduct one Become.Plate flange blast pipe is also called flangeless wind pipe altogether.

For angle steel flange connection system, at angle steel flange assembly welding link, four angles caused because of welding deformation Steel is mutually inclined or misalignment, flange group welding crator stay the reasons such as sealing surface does not polishes, and all two ring flanges connected will be made close One week sealed gap of front cover is uneven, and sealing gasket consistency of thickness, the one week pressure to sealing gasket of such flange sealing surface and close Envelope effect is the most uneven.

For common plate Flanged Connection System, in common plate flange roll forming link, because of Elastic recovery effect flange face Present pre-large post-small change with the angle of airduct tube wall, and zone line mitre joint is bordering on 90 °.So during Flange joint, altogether Plate flange forming error can be on the impact of sealed section.Wherein, it is total to two standard flange limit (also referred to as ring flange) phases in plate flange Joining rear intermediate cross-section shape (i.e. sealed section shape) is strip, and sealed section and the perpendicular laying of airduct tube coupling.Plate altogether The forming errors of flange is mainly reflected in three below aspect, first, when in common plate flange two flange ends relative to time close That seals cross section is shaped as inverted trapezoidal, i.e. the faying face of two flanges is reducing (being gradually reduced from outside to inside)；The second, altogether plate method In orchid two flange head ends relative to time sealed section be shaped as trapezoidal, i.e. the faying face of two flanges is for dehiscing (by outward It is gradually increased in Zhi)；3rd, altogether in plate flange two flange first and ends relative to time bar shaped sealed section inclined.Its In, above-mentioned three kinds of flange seal cross section structures forming errors occur, are all to be alternately present on a flange, the closeest The shape in envelope cross section is continually varying.The one week pressure to sealing bedding and padding of flange sealing surface and sealing effectiveness are also to change at any time , thus sealing effectiveness is greatly affected.

Actual add man-hour, although using stamping flange angle by force by flange head and the tail at corner, airduct tube coupling two ends Two ends are strapped in same plane, but because the flange between Elastic recovery effect two flange angle is still gone out by above-mentioned three kinds of forming errors Existing warpage, and present heeling condition.

It addition, assemble link at airduct tube coupling, between the flange of angle steel flange, rely on one week equally distributed multiple bolt Connect, owing to space limits, various quickly, electronic fastening tool cannot put to good use, common manual spanner can only be used, its Inefficiency causes bolt tightness to differ, and even some occasions are the most free-hand screws.Particularly airduct local is in space chi Very little limited occasion, bolt connects operation and may just cannot be carried out；If meet the overproof flange of foregoing unfitness of butt joint or Airduct flange four aperature of angle or corner seaming are overlapping, between flange one week gap uniformity degree the most more it cannot be guaranteed that.Therefore, airduct When tube coupling assembles, the non-fastening area of connecting bolt and because angle steel welding deformation, misalignment or seaming overlap cause sealing gasket not to be compacted The sealing function in region is all by some lost.

And connecting except embedded with flange angle, corner and in addition to using bolt fastening between the flange of altogether plate flange, remaining flange is only By the 10mm width top margin outside interrupted alligator clamp 17 clamping flange limit.Plate flange and alligator clamp 17 all use roll forming altogether, Its scale error is unavoidable.In terms of implementation result, mainly alligator clamp 17 inner width size plate flange top margin width dimensions together is difficult to Coupling, if alligator clamp 17 inner width size is big, two flanges are not clamping；If alligator clamp 17 inner width size is little, alligator clamp 17 does not fills； Clamping by force, can cause the upper and lower stagger arrangement of top margin on adjacent flanges limit.As can be seen here, the disadvantage of plate Flange joint is altogether Between airduct tube coupling, the sealing effectiveness of junction fluctuates with common plate flange roll forming quality, and banjo clip (i.e. alligator clamp 17) But without adaptive regulatory function, cause sealing function the most firm, unstable.

Time actually used, the roll forming quality problems of plate flange are mainly reflected in common plate flange corner and edge is not pressed altogether Tightly, altogether plate flange corner is smeared fluid sealant and is too much caused local the most padded so that the gap between flange increases, alligator clamp 17 becomes Type is irregular.

And in this utility model, for the problems referred to above overcoming common plate Flanged Connection System to exist, use jackscrew clamping structure Replace alligator clamp 17, eliminate the rolling quality impact on sealing effectiveness of alligator clamp 17 plate flange top margin together.Same angle steel flange As connection, common manual wrench fastening jackscrew is used to carry out clamping.

It addition, in integral hoisting link after in metal bellows, multiple airduct tube coupling ground assemble, because of airduct during lifting The problems such as suspension centre offsets, tilts, shake, suspension and support height differ by force fixing, suspension and support spacing is excessive, airduct between suspension and support Gravitative Loads, airduct surface thermal insulation construction make the reasons such as system weight increase, all will cause the curved tenesmus of pipeline or airduct pipe Misplacing up and down between two flanges of internode flange, making union flange sealed section is up-small and down-big trapezium structure, causes Union flange bottom half cycle reduces obturation effect because gap strengthens.

Further, link is run at ventilation and air conditioning system, when pressure medium is gradually increased, because air-line system is natural frequency Relatively low sheet metal ghost splicing construction, has pressure medium easily to cause system vibration along the flowing of airduct inwall.The angle steel that rigidity is big Amplitude and the frequency of Flanged Connection System are less, little on airtight performance impact；And the rigidity of plate Flanged Connection System is less altogether, Particularly flange springs folder 17 is dependent on two flange top margins of elastic clamping union flange, thus unadjustable；Ventilate sky During adjusting system vibration, two flanges are with certain upper and lower changing of the relative positions of frequency, and the sealing gasket between flange is worn and torn and thinning repeatedly, If things go on like this alligator clamp 17 gradually loses clamping action, and the obturation effect between flange constantly reduces.And above procedure along with System media pressure increases and becomes apparent from.Finally, airduct cannot bear the blast of blower fan top gear, air quantity and blast and all can not Meet the use requirement of ventilation and air conditioning system.

As shown in the above, by the reasons of air leakage of ventilation and air conditioning system is analyzed, it is concluded that

The first, ventilation and air conditioning system mainly leak out region on main pipe and various pipe fitting；

The second, because seaming is slack and undisciplined, seaming layer during the conventional joint angle seaming 13 of metal bellows body corner seam (or closure seam) Folded gap does not eliminate, cork cot or because of side wave present interrupted folding phenomenon or can not be close to because slenderness ratio is little single port realize close Seam, if only by the sealing structure connected with sheet material, airduct corner seam (or closure seam) will become main that airduct body leaks out Source；

3rd, the airduct tube coupling adpting flange system of metal bellows is in system operation, the reason that inleakage exceeds standard For processing, assemble, install, maintenance etc. is implemented link and be there is error, the sealing surface of two flanges can not keeping parallelism and two The thickness being smaller than sealing gasket of person.

Following four conclusion is found: the first, angle steel flange processing belongs to nonstandard processing operation, works after flange group welding through analyzing Plane can use machining to reach higher flatness, but the rising of cost and work efficiency be slowly difficult to bear；The second, altogether plate The interrupted rolling forming mode of flange determine section bar front end in the longitudinal direction dehisce, this principle defect of rear end reducing, this Utility model uses bending and forming method to substitute rolling forming mode can greatly reduce the upper of this elastic recovery, equally its cost Liter also slowly is difficult to acceptance with work efficiency；In addition the rolling forming error being total to plate flange top margin and alligator clamp 17 inner chamber size is also Being difficult to avoid, the machining accuracy improving equipment only can reduce the scope of error；3rd, because of sky in airduct tube coupling 1 assembling process Between limit, the level of skill of operator and work quality is uneven, lack the factors such as efficient specific purpose tool, to a certain extent Limit the group lifting to installation quality of airduct tube coupling 1；4th, assemble and ventilation and air conditioning system operation ring at airduct tube coupling 1 The dislocation up and down of the air duct flange caused by joint and the parabola shaped tenesmus of airduct are inevitable.According to aforementioned four conclusion, It is unrealistic for requiring the sealing surface of two flanges 2 in air duct flange to remain parallel and being smaller than the thickness of sealing gasket , take the passive behaviors such as closure to improve the seal of air duct flange connection system simply, its effect remains limited. The most actively adapt to airduct pumped (conveying) medium characteristic and take can be along with the sealing automatically compensated relative to change in location between flange Structure, can be only achieved preferable sealing effectiveness.The offset-type airduct Anti-air-leakage structure that this utility model is used is then the suitableeest Answer airduct pumped (conveying) medium characteristic and take to seal effect along with the sealing structure automatically compensated relative to change in location between flange Fruit is the best and actually used, and input cost is relatively low, and processing and fabricating is easy.

Embodiment 2

As shown in Fig. 5-2 and Fig. 6-2, in the present embodiment, as different from Example 1: described air duct flange is angle steel method Blue；Two described flanges 2 of described angle steel flange are outside the connection end being fixed on airduct tube coupling 1 or described connection pipe fitting Right angle angle steel, the connection end of described airduct tube coupling 1 or described connection pipe fitting is provided with and is fixed on inside described right angle angle steel Flanging 4.

The arc sealing strip 5-1 of described Ω shape sealing strip 5 is positioned at outside flanging 4, and described arc sealing strip 5-1 is installed in institute Stating between two described flanges 2 of angle steel flange, the side seal bar 5-2 of described Ω shape sealing strip 5 is installed in described in two Between flanging 4 inside flange 2；Described O shape sealing strip 3 is installed between the flanging 4 inside two described flanges 2.

In the present embodiment, it is fixed by connecting bolt 6 between two described flanges 2, the spiral shell of described connecting bolt 6 Tightening latch and the perpendicular laying of flange 2；Described connecting bolt 6 is positioned at outside described offset-type sealing strip.

Further, the quantity of described connecting bolt 6 is multiple, and multiple described connecting bolt 6 is along the one of described air duct flange Week lays from front to back.

During actual installation, a right-angle side of described right angle angle steel is fixed on airduct tube coupling 1 by fastening bolt 8.

Time actually used, the described Ω shape sealing strip 5 obturation effect under the normal connection status of described angle steel flange is superior. As shown in Fig. 5-2, under the normal connection status of described angle steel flange, two described side seal bars of described Ω shape sealing strip 5 5-2 is pressed and together, and arc sealing strip 5-1 is tightened in the inner side of flange 2 with flanging 4, forms such as hollow bean sprout Shape seals route.Because of the elastic recovery characteristic effect of Ω shape sealing strip 5, the tightest with the inwall of two flanges 2 and two flangings 4 Closely connected conjunction, sealing effectiveness significantly improves than traditional strip sealing strip.

It addition, under described angle steel flange exception connection status, described Ω shape sealing strip 5 shows the most compensatory Energy.As shown in Fig. 5-4, because processing, assemble, install, safeguard and running between two flanges 2 of described angle steel flange In occur the reason such as error, deformation can not keeping parallelism and time tenesmus occurs, opening-like state and airduct between two flanges 2 In closed configuration between two flanges 2 of tube coupling 1 bottom.

Between two flanges 2 during opening-like state, two described side seal bar 5-2 of described Ω shape sealing strip 5 Opening, pumped (conveying) medium enters Ω shape sealing strips 5 along the spaces in the middle of two described side seal bar 5-2, and under pressure Ω shape sealing strip 5 inner chamber is made to fill and be close to the medial wall of flanging 4.Further, pumped (conveying) medium pressure is the biggest, pastes the tightest, seals Effect is the best；

Time between two flanges 2 in closed configuration, two flanges 2 are by two described sidepieces of Ω shape sealing strip 5 Sealing strip 5-2 compresses, and two described side seal bar 5-2 seal as traditional strip gasket bar, but Ω shape The arc sealing strip 5-1 of sealing strip 5, under foregoing elastic recovery characteristic effect, plays double sealing effect；

So, between two described flanges 2 from top to bottom in by opening to the gradually transitive state remained silent, its sealer Reason is also progressively switch to by two described sidepieces of Ω shape sealing strip 5 main sealed by the inner chamber of Ω shape sealing strip 5 Sealing strip 5-2 and inner chamber play associating sealing function.

When the spacing of particularly two described flanges 2 is more than minimum seal distance, traditional sealing strip substantially loses close Envelope function.But owing to the arc sealing strip 5-1 of the Ω shape sealing strip 5 part savings between two flanges 2 have certain length, Even if two described airduct tube couplings 1 pull open a determining deviation, between two described flanges 2, build " the arc of one leakproof all the time Wall ", ensure that sealing function renews.

Time actually used, the taping process of described O shape sealing strip 3 is simple and efficient, only need to be at described plate flange altogether during installation A described flange 2 on temporary adhesion fix, glue consumption reduces more than 98% than Ω shape sealing strip 5, more energy-conservation Environmental protection.

Time actually used, the described O shape sealing strip 3 obturation effect under the normal connection status of described angle steel flange is superior. As in fig. 6-2, under the normal connection status of described angle steel flange, O shape sealing strip 3 is in the extruding of the flanging 4 of described angle steel flange Strip hollow seal cross section it is squeezed into, also due to O shape sealing strip 3 is elastic bigger, because O shape is close than ribbon seal under effect The elastic recovery characteristic effect of strip of paper used for sealing 3, fits tightly with the medial wall of the flanging 4 on two flanges 2, and sealing effectiveness is also than biography System ribbon seal significantly improves.

It addition, under described angle steel flange exception connection status, described O shape sealing strip 3 shows and significantly compensates performance. As shown in Fig. 6-4, because processing, assemble, install, safeguard and in running between two flanges 2 of described angle steel flange Occur the reason such as error, deformation can not keeping parallelism and time tenesmus occurs, between two flanges 2 on airduct tube coupling 1 top in Open state.Pumped (conveying) medium acts on outside the inner circumferential of O shape sealing strip 3, makes O shape sealing strip 3 be adjacent to flanging 4 under pressure Sidewall, the flap portion of O shape sealing strip 3 is got in the gap between two described flanges 2, is formed as the most up-small and down-big red Fructus Jujubae shaped cross seals route.Further, even if two described airduct tube couplings 1 pull open a determining deviation, pumped (conveying) medium is by O shape sealing strip 3 laterally flatten, and the height that the flap portion of O shape sealing strip 3 is got between two described flanges 2 in gap decreases, but The sidewall of the flanging 4 on flange 2 the most tightly blocks O shape sealing strip 3, because this compensatory michanism of O shape sealing strip 3 makes it seal Function will continue to keep.

Thus, when described air duct flange is angle steel flange, described O shape sealing strip 3 is squeezed into up-small and down-big Fructus Jujubae Shape, pumped (conveying) medium acts on the outer rear flank of inner circumferential of O shape sealing strip 3, and the O shape sealing strip 3 of Fructus Jujubae shape is pushed into two-way wedge In and push away tighter and tighter；Pulling open certain distance between two described airduct tube couplings 1, the extruding degree of O shape sealing strip 3 only becomes Little, but the elastic recovery characteristic of O shape sealing strip 3 and two-way wedge sealing principle will not change or lose.

In the present embodiment, remainder structure and annexation are the most same as in Example 1.

Below by conventional seals pad and this utility model offset-type sealing strip (including Ω shape sealing strip 5 and O shape sealing strip 3) Characteristic carry out correspondence and compare, comparative result refers to table 1:

Table 1 conventional seals pad and offset-type sealing strip Character Comparison table

The above, be only preferred embodiment of the present utility model, not impose any restrictions this utility model, every Any simple modification, change and equivalent structure change above example made according to this utility model technical spirit, the most still Belong in the protection domain of technical solutions of the utility model.

Claims (10)

1. a ventilation and air conditioning system offset-type metal bellows Anti-air-leakage constructs, it is characterised in that: include that offset-type seals knot Structure；Described offset-type seals structure and includes that offset-type sealing strip, described offset-type sealing strip are positioned at two flanges of air duct flange Between limit (2)；Described air duct flange be the flange being installed on airduct and its be angle steel flange or altogether plate flange, two described methods Blue limit (2) is fixed in parallel laying and therebetween by clamping structure or connecting bolt (6)；Described clamping structure includes It is installed on the card piece installing on two described flanges (2)；Described airduct is metal bellows；

Described offset-type sealing strip is open type sealing strip or closed type sealing strip；Described open type sealing strip is Ω shape sealing strip (5), the shape of cross section of described Ω shape sealing strip (5) is Ω shape, and described Ω shape sealing strip (5) includes arc sealing strip (5-1) It is connected to the side seal bar (5-2) below arc sealing strip (5-1) two ends, left and right with two, left and right symmetry；Described closed type is close Strip of paper used for sealing is O shape sealing strip (3), and the shape of cross section of described O shape sealing strip (3) is O shape；Described offset-type sealing strip is installed on two Between individual described flange (2).

2. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 1, its feature exists In: described offset-type sealing strip laying for a week along described air duct flange；The outside of two described side seal bars (5-2) Multiple tracks groove it is provided with on wall；

The external diameter of described O shape sealing strip (3) is Φ 6mm～Φ 16mm and its wall thickness are 1mm～2.5mm.

3. construct according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 1 or 2, its feature It is: described air duct flange, described offset-type sealing strip and described clamping structure or connecting bolt (6) form Flange joint system System；

Described airduct includes main pipe and the arm being connected with described main pipe, by even between described arm and described main pipe Jointed tubular workpieces is attached, and described connection pipe fitting is elbow, tee T or four-way pipe；Described main pipe and described arm are by multiple Airduct tube coupling (1) is spliced from front to back；

In described main pipe and described arm between adjacent two described airduct tube couplings (1) and described connection pipe fitting and described master All it is attached by described Flanged Connection System between main and described arm；Described main pipe and described arm are logical Airduct；Two described flanges (2) of the described Flanged Connection System being connected between adjacent two described airduct tube couplings (1) point It is not fixed on the connection end of two described airduct tube couplings (1), is connected to the institute between described connection pipe fitting and described ventilation duct Two the described flanges (2) stating Flanged Connection System are separately fixed at the connection end of described connection pipe fitting and described ventilation duct On.

4. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 3, its feature exists In: described air duct flange is angle steel flange；Two described flanges (2) of described angle steel flange are and are fixed on airduct tube coupling (1) the right angle angle steel or outside the connection end of described connection pipe fitting, described airduct tube coupling (1) or the connection end of described connection pipe fitting On be provided with the flanging (4) being fixed on inside described right angle angle steel；Arc sealing strip (5-1) position of described Ω shape sealing strip (5) In flanging (4) outside, described arc sealing strip (5-1) is installed between two described flanges (2) of described angle steel flange, institute The side seal bar (5-2) stating Ω shape sealing strip (5) is installed between the flanging (4) inside two described flanges (2)；Described O shape sealing strip (3) is installed between the flanging (4) of two described flange (2) inner sides.

5. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 3, its feature exists In: described air duct flange is angle steel flange；It is fixed by connecting bolt (6) between two described flanges (2), described company The shank of bolt of connecting bolt (6) and flange (2) perpendicular laying；Described connecting bolt (6) is positioned at outside described offset-type sealing strip Side.

6. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 3, its feature exists In: described air duct flange is plate flange altogether；It is provided with on two described flanges (2) of described plate flange altogether and seals for Ω shape The sealing strip mounting groove (9) that the arc sealing strip (5-1) of bar (5) or O shape sealing strip (3) install, described sealing strip mounting groove (9) For flange (2) being bent outwardly the groove of formation.

7. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 3, its feature exists In: described airduct tube coupling (1) be rectangular air duct and its be spliced or by two blocks of described gold after bending by one piece of sheet metal Belong to sheet material to be spliced after bending；

Splicing seams on described airduct tube coupling (1) is laid along the longitudinal length of airduct tube coupling (1)；Described splicing seams is Closure seam and its be seaming seam, described seaming seam use seaming be list flat mouth seaming (11)；

When described airduct tube coupling (1) is spliced after bending by one piece of described sheet metal, described airduct tube coupling (1) is single Block sheet material airduct tube coupling, described seaming seam quantity be one and its be laid on a long limit of airduct tube coupling (1)；

When described airduct tube coupling (1) is spliced after bending by two pieces of described sheet metals, the quantity of described seaming seam is And two described seamings seam is laid on two described long limits of airduct tube coupling (1) respectively article two,；

Described offset-type sealing strip is divided into the offset-type sealing strip sections of 4 vertical bar shapeds, adjacent two described offset-type sealing strips All it is attached by a sealing strip joint (16) between sections.

8. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 7, its feature exists In: described single flat mouth seaming (11) includes inner side U-shaped mouth (11-1) and the outside U-shaped mouth being engaged with inner side U-shaped mouth (11-1) (11-2), the rear side of described outside U-shaped mouth (11-2) is provided with and inner side U-shaped mouth (11-1) carries out spacing gear platform (11-3), Described gear platform (11-3) is the boss formed that curved inwardly by the described sheet metal of outside U-shaped mouth (11-2) rear side.

9. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 3, its feature exists In: described airduct tube coupling (1) is rectangular air duct, circular duct or elliptical air；Described clamping structure and connecting bolt (6) Quantity is multiple and both laying from front to back for a week along described air duct flange.

10. constructing according to a kind of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage described in claim 1 or 2, it is special Levy and be: described air duct flange is plate flange altogether；It is fixed by described clamping structure between two described flanges (2), Described card piece installing is the card article (10-1) being installed on two described flange (2) outsides, and the outer end of two described flanges (2) is equal For the dop (2-1) through being bent to form；Described clamping structure is jackscrew clamping structure, and described jackscrew clamping structure also includes jackscrew (10-2), one end of described card article (10-1) is fixing end, the described card of described card article (10-1) for card dress end and its other end Dress end is the grab through being bent to form, and described grab is installed on the dop (2-1) of a described flange (2), described jackscrew (10-2) being arranged on the described fixing end of card article (10-1), described jackscrew (10-2) is by tight for the described fixing end of card article (10-1) Admittedly be fixed on another described flange (2) outside.