CN105736874B

CN105736874B - Ventilation and air conditioning system offset-type airduct Anti-air-leakage constructs and airduct tube coupling processing method

Info

Publication number: CN105736874B
Application number: CN201610317118.6A
Authority: CN
Inventors: 李兴武; 冯璐; 薛新铭; 胡春林; 秦文敏; 史均社; 房海峰
Original assignee: Shaanxi Is Built Work And Is Installed Group Co Ltd
Current assignee: Shaanxi Is Built Work And Is Installed Group Co Ltd
Priority date: 2016-05-12
Filing date: 2016-05-12
Publication date: 2018-03-16
Anticipated expiration: 2036-05-12
Also published as: CN105736874A

Abstract

The invention discloses a kind of ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, including offset-type sealing structure；Offset-type sealing structure includes offset-type sealing strip, and offset-type sealing strip is located between two flanges of air duct flange；Fixed between two flanges by clamping structure or connecting bolt；Offset-type sealing strip is open type sealing strip or closed type sealing strip；Open type sealing strip is Ω shape sealing strips, and closed type sealing strip is O shape sealing strips；Offset-type airduct Anti-air-leakage structural texture is simple, reasonable in design and easy for installation, using effect is good for this, can effectively reduce the inleakage of ventilation and air conditioning system airduct.Meanwhile the present invention discloses a kind of airduct tube coupling processing method, step is：First, sheet metal is cut；2nd, seaming is processed；3rd, flange processing side processing；4th, tube coupling body sheet material is bent；5th, seaming joint close and it is compacted.The process steps are simple, simple for production and using effect is good, and energy is easy, is rapidly completed airduct tube coupling process.

Description

Ventilation and air conditioning system offset-type airduct Anti-air-leakage constructs and airduct tube coupling processing method

Technical field

The invention belongs to ventilation and air conditioning system technical field of construction, more particularly, to a kind of ventilation and air conditioning system offset-type wind Pipe Anti-air-leakage constructs and airduct tube coupling processing method.

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 Part, silencer etc. form；And air-conditioning system by air conditioner cold-heat source, air processing machine, airflow pipe conveying and is distributed, with And air-conditioning the composition such as automatically controls and adjusted to indoor temperature, humidity, air velocity and cleannes.Now, air conditioner system System is undoubtedly a chief component of building energy consumption because of wasted energy consumption of leaking out.Ventilation and air conditioning system is because of system line It is long, element is more, airduct is shell splicing construction and the reasons such as medium differential pressure is big, it is normal to leak 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 to ventilation and air conditioning system progress system debug When, most serious occur least significant end air outlet adjust not air-out come phenomenon, typically can all suspect device parameter selection of small or The reasons such as person's SR is larger.

The tightness of ventilation and air conditioning system concerns energy-saving and room ventilation quality guarantee, for many years industry technology people Member leaks out to ventilation and air conditioning system always to be studied with consumption reduction.Increasing scholar will reduce ventilation and air conditioning system energy consumption work For a main means of building energy conservation.Air conditioner air-line system air quantity leakage control technology is that unit in charge of construction applies at the scene The key measure that control system saves in work.Wherein, metal bellows machinery seaming forming technique, altogether plate flange connection new technology and Airduct integrates the discovery and innovation of the three big new technologies such as process technology, promotes industry scientific development, improves China's metal The manufacturing technology of airduct and equipment, the lifting to metal bellows crudy serve qualitative leap, system air leakage amount It is decreased obviously earlier above.

As energy saving building and green building are persistently carried out by country, higher requirement is proposed for ventilation and air conditioning system, Typically there is GB50189-2015《Public building energy design standard》The middle requirement for proposing air-line system unit air volume wasted work rate； The new edition GB50243 that will be promulgated《Code for acceptance of construction quality of conditioning works》In, airduct leak test is no longer adopted The overall application " inleakage experiment " with " experiment of light leak method ", and propose to verify construction technology.

Looked into by preliminary theoretic discussion and to metal bellows processing, the quality tracing of group pair and installation overall process and science and technology Newly, find to still have some problems in terms of control ventilation and air conditioning system leaks out, be mainly manifested in following five aspects：The First, cognition of the existing research to the main region of system air leakage is unclear；Secondth, metal bellows are produced with the mass defect of each link The cognition influenceed on system air leakage is unclear；3rd, thorough theory analysis is lacked to the mechanism of leaking out of key position；4th, do not have There is the core key technology for creating and reducing system air leakage, simply take the passive behavior such as closure and lack and actively adapt to medium spy The active conduct of property and real current situation；5th, done much in terms of research detecting system leaks out device, and studying closed principle And the aspect that tries out is considerably less.Thus, in order to adapt to the requirement of national green building and environmental protection and energy saving, it is empty to improve China's ventilation Industry technology quality level is adjusted, ensures the realization of heating ventilation and air-conditioning systemic-function, energy waste is reduced, air conditioner system need to be controlled System leaks out this common quality defect and chronic disease, and strive reaching reduces whole system configuration rule under conditions of same air dielectric is conveyed Lattice and parameter, to reduce construction unit's investment and operating cost.

The content of the invention

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that provide a kind of air conditioner System balance type airduct Anti-air-leakage construct, its simple in construction, reasonable in design and processing and fabricating and it is easy for installation, using effect is good, The inleakage of ventilation and air conditioning system airduct can be effectively reduced.

In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of ventilation and air conditioning system offset-type airduct Anti-air-leakage constructs, it is characterised in that：Including offset-type sealing structure；The offset-type sealing structure includes offset-type sealing strip, The offset-type sealing strip is located between two flanges of air duct flange；The air duct flange is the flange being installed on airduct And it is angle steel flange or plate flange, two flanges are in parallel laying and pass through clamping structure or connection therebetween altogether Bolt is fixed；The clamping structure includes the clamping part being installed on two flanges；The airduct is metal wind Pipe；

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

Above-mentioned ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, it is characterized in that：The offset-type sealing strip is described in Laid one week of air duct flange；Multiple tracks groove is provided with the lateral wall of two side seal bars；

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

Above-mentioned ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, it is characterized in that：The air duct flange, the offset-type Sealing strip and the clamping structure or connecting bolt composition Flanged Connection System；

The airduct includes main pipe and the branch pipe being connected with the main pipe, leads between the branch pipe and the main pipe Cross connecting pipe to be attached, the connecting pipe is elbow, three-way pipe or four-way pipe；The main pipe and the branch pipe by Multiple airduct tube couplings are spliced from front to back；

In the main pipe and the branch pipe between the two neighboring airduct tube coupling and the connecting pipe with it is described It is attached between main pipe and the branch pipe by the Flanged Connection System；The main pipe and the branch pipe are logical Airduct；Two flanges of the Flanged Connection System being connected between the two neighboring airduct tube coupling are fixed respectively On the connection end of two airduct tube couplings, the flange being connected between the connecting pipe and the ventilation duct connects Two flanges of system are separately fixed on the connection end of the connecting pipe and the ventilation duct.

Above-mentioned ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, it is characterized in that：The air duct flange is angle steel flange； Two flanges of the angle steel flange be fixed on it is straight on the outside of the connection end of airduct tube coupling or the connecting pipe The folding being fixed on the inside of the right angle angle steel is provided with the connection end of angle steel, the airduct tube coupling or the connecting pipe Side；The arc sealing strip of the Ω shapes sealing strip is located on the outside of flanging, and the arc sealing strip is installed in the angle steel flange Between two flanges, the side seal bar of the Ω shapes sealing strip be installed in flanging on the inside of two flanges it Between；The O shapes sealing strip is installed between the flanging on the inside of two flanges；

It is fixed between two flanges by connecting bolt, shank of bolt and the flange of the connecting bolt are in Vertical runs；The connecting bolt is located on the outside of the offset-type sealing strip.

Above-mentioned ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, it is characterized in that：The air duct flange is common plate flange； Arc sealing strip or O shapes the sealing strip peace being provided with altogether on two flanges of plate flange for Ω shape sealing strips The sealing strip mounting groove of dress, the sealing strip mounting groove are that flange is bent outwardly to the groove to be formed；

The sealing strip mounting groove is deep-slotted chip breaker, and the external diameter of arc sealing strip and O the shape sealing strip is all higher than sealing strip The internal diameter of mounting groove.

Above-mentioned ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, it is characterized in that：The airduct tube coupling is rectangular air duct And it is spliced by one piece of sheet metal after bending or is spliced by two pieces of sheet metals after bending；

Longitudinal length of the splicing seams along airduct tube coupling on the airduct tube coupling is laid；The splicing seams are to close Joint close and its be seaming seam, the seaming that seaming seam uses is single flat mouth seaming；

When the airduct tube coupling is spliced by one piece of sheet metal after bending, the airduct tube coupling is monolithic Sheet material airduct tube coupling, the quantity that the seaming stitches is one and it is laid in a long side of airduct tube coupling；

When the airduct tube coupling is spliced by two pieces of sheet metals after bending, the quantity of the seaming seam is The two and two occlusion seams are laid in two long sides of airduct tube coupling respectively.

Above-mentioned ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, it is characterized in that：Single flat mouth seaming includes inner side U Shape mouth and the outside U-shaped mouth being engaged with inner side U-shaped mouth, be provided with rear side of the outside U-shaped mouth inner side U-shaped mouth is carried out it is spacing Block machine, the block machine is that the sheet metal on rear side of the U-shaped mouth of outside curves inwardly the boss to be formed；

The offset-type sealing strip is divided into the offset-type sealing strip section of 4 vertical bar shapeds, and the two neighboring offset-type is close It is attached between strip of paper used for sealing section by a sealing strip joint.

Above-mentioned ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, it is characterized in that：The air duct flange is common plate flange； It is fixed between two flanges by the clamping structure, the clamping part is to be installed on outside two flanges The card article of side, the outer end of two flanges is the dop through being bent to form；The clamping structure is jackscrew clamping structure, The jackscrew clamping structure also includes jackscrew, and one end of the card article is clamping end and its other end is fixing end, the card article The clamping end is the grab through being bent to form, and the grab is installed on the dop of a flange, the jackscrew installation In the fixing end of card article, the fixing end of card article is fixedly secured on the outside of another described flange by the jackscrew.

Meanwhile the invention also discloses the list that a kind of method and step is simple, reasonable in design and simple processing, using effect are good Block sheet material airduct tube coupling processing method, it is characterised in that：This method comprises the following steps：

Step 1: sheet metal is cut：According to the structure and size of inner side U-shaped mouth and outside U-shaped mouth on airduct tube coupling, adopt The both sides up and down of the rectangular metal sheet material are cut respectively with plate cutting equipment, obtain two occlusal sides；Also, root According to the structure and size on airduct tube coupling upper flange side, using the plate cutting equipment to before and after the rectangular metal sheet material two Side is cut respectively, obtains the flange processing side of two flanges；Meanwhile according to the laying of four ribs on airduct tube coupling Position, four otch in parallel laying are respectively cut on two flange processing sides, obtain the to be processed of airduct tube coupling Sheet material；

The sheet material to be processed includes tube coupling body sheet material, two occlusions positioned at both sides above and below the tube coupling body sheet material While and two respectively positioned at the tube coupling body sheet material front and rear sides flanges processing while；

Step 2: seaming is processed：Two occlusal sides in step 1 are carried out with seaming processing respectively, obtains inner side U-shaped Mouth and outside U-shaped mouth；

Step 3: flange processing side processing：Two in the step 1 flange processing sides are processed respectively, and obtained Two flanges；

Step 4: tube coupling body sheet material is bent：Four otch along on the processing of flange described in step 1 side, it is right Tube coupling body sheet material carries out four bendings, obtains the tube coupling body of airduct tube coupling；

Step 5: seaming joint close and being compacted：By inner side U-shaped mouth and outside U-shaped mouth snapping described in step 2, and using pressure Real machine carries out compaction treatment to inner side U-shaped mouth and outside U-shaped mouth, completes the process of airduct tube coupling.

The above method, it is characterized in that：Compacting machine described in step 5 is cantilevered list flat mouth seaming closure seam compacting machine；

The cantilevered list flat mouth seaming closure seam compacting machine includes frame, rack-mounted entablature, positioned at upper Sill immediately below crossbeam includes support, under support with that can carry out movable head, the head along entablature Square and the compacting disk roller being compacted downwards to single flat mouth seaming and rack-mount and drive compacting disk roller move down Dynamic vertically movable mechanism, the compacting disk roller are arranged on the vertically movable actuator base, and the compacting disk roller is located at lower horizontal stroke Above beam, the compacting disk roller is in parallel laying with sill, be provided with the support motivation head carry out it is movable Movable drive mechanism；Lower mould is installed, the lower mould is in parallel laying with sill, under described on the sill The top of mould is provided with the lower indent placed for single flat mouth seaming, and the lower indent is laid along the length direction of sill, And lower indent is positioned at the underface of compacting disk roller；The compacting disk roller is the cylindric disk roller in horizontal layout, described cylindric It is peripherally disposed on the lateral wall of roller to there is annular to push boss, the annular push boss be located at lower indent just on Side；The more airduct pressure pins that horizontal support is carried out to airduct tube coupling, the wind are respectively arranged with left and right sides of the sill Conduit saddle bar is in horizontal layout；Multiple airduct pressure pins are laid in same level, and multiple airduct pressure pins is upper Upper surface flush of the surface with lower mould.

The present invention has advantages below compared with prior art：

1st, use that ventilation and air conditioning system offset-type airduct Anti-air-leakage constructs structure is simple, reasonable in design and processing and fabricating Simplicity, input cost are relatively low.

2nd, used offset-type gasket structure is simple, simple processing and economical and practical, good sealing effect, has sealing Compensation function.The offset-type sealing strip includes two kinds of open type sealing strip and closed type sealing strip, fixed easy, and using effect It is good.Wherein, the unit weight of closed type sealing strip is light and cost is low, during actual use only need in flange one side bonding or It is easy for installation and difficult for drop-off in unilateral 2~3 point bonding.In addition, the making of inleakage and flange, group pair and installation quality close Connection degree is not high, has the outstanding features such as low, the environmentally friendly, energy-conservation of cost.

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

4th, use the structure of single flat mouth seaming simple and be open conveniently, mutually splicing is convenient.

5th, used single flat mouth seaming 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, which is provided with, carries out spacing block machine to inner side U-shaped mouth, has both overcome longitudinally guiding when the single flat mouth seaming of tradition shapes Line midway disappears and easy sideslip, cause airduct occur concentric reducer, with flange assembling it is difficult, with flange gap is excessive or even sheet material The problems such as scrapping, and can easily breaks off relations after effectively solving the problems, such as single flat mouth seaming joint close, thus can effectively increase occlusion Intensity, and sealing effectiveness is can ensure that, can effectively solve to use joint angle seaming or press-button type seaming on existing rectangular metal airduct When it is existing can not eliminate sheet material interlayer spacings, stacking gap leak out, sealing effectiveness difference the problems such as.

6th, monolithic sheet material airduct tube coupling processing method is simple, simple for production and using effect is good, when the specification of rectangular air duct When smaller, bend and be spliced using one piece of sheet metal, four corners are formed using 90 ° of bendings, and a closure seam uses Single flat mouth seaming and the big side intermediate region for being arranged on airduct body；When the specification of rectangular air duct is larger, using two blocks of metals Sheet material is bent and is spliced, and four corners are formed using 90 ° of bendings, and two closure seams are using single flat mouth seaming and difference cloth It is located at the intermediate region on the two big side of airduct body.The section form of traditional rectangular metal bellows is as follows：When airduct specification compared with Hour, bend and be spliced using one piece of sheet metal, three corners are formed using 90 ° of bendings, and a closure seam is using connection Close angle seaming；When airduct specification is larger, structure type is two-piece type, and two corners are formed using 90 ° of bendings, two closure seams Using joint angle seaming；When airduct specification is bigger, bends and be spliced using two pieces of sheet metals, two corners use 90 ° of bendings, two closure seams use joint angle seaming；During actual use, above-mentioned joint angle seaming presence can not eliminate sheet metal layer Between gap, can not completely fore shaft, sealing effectiveness difference the problems such as.Compared with traditional rectangular metal bellows, used single flat mouth is stung Mouth has advantages below：Firstth, simple processing and good sealing effect, rectangular metal airduct is using single flat mouth seaming as closure Seam, can ensure that the size of airduct is accurate, make airduct crudy stable；Also, sealing structure can be achieved by sheet material connection； Actual processing process is easy, inner side U-shaped mouth with after the splicing of outside U-shaped mouth, the hand-held lumps of wood beat or compacting machine rolling joint close after i.e. Can, compared with joint angle seaming and press-button type seaming, the present invention uses the sealed pathway length of single flat mouth seaming most long, normally Do not have to the supplement seal approach such as fluid sealant filleting under execution conditions and just realize optimal closed result；Secondth, air duct board thickness Change on sealing effectiveness without influence.Although sheet metal thickness is relatively thin, interlayer spacings and opening in single flat mouth seaming become big, All interlayer spacings eliminate after spliced joint close, and mismachining tolerance during seaming rolling forming only has micro- to the length of sealed pathway Amount influences；3rd, closure seam is laid in the big side intermediate region of airduct can be remarkably reinforced airduct rigidity, to save space, rectangle gold Belong to airduct be in flat structure mostly, big side is horizontal up and down, Chang Yinwei sheet materials insufficient rigidity and drop, thus construction in Reinforced more using plate face beading, point is reinforced and the means such as housing is reinforced improve big side rigidity.Using single flat mouth seaming as closure The rectangular metal airduct rigidity of seam can improve one-level, between maximum length or airduct tube wall reinforcing member that airduct pipeline section allows Permission distance can be allocated by standard gauge shifting increase one-level, reduce reinforcing member material usage under conditions of same stiffness is ensured With construction work amount；4th, air duct board dosage can be saved, reduces cost：Using rectangle of single flat mouth seaming as closure seam Metal bellows, airduct corner using 90 ° of bendings because being formed, and bending consumption reduces 37mm, and single flat mouth seaming compares joint angle The short 12mm of seaming length of run；The rectangular air duct for being spliced by one piece of sheet metal after bending is computed, seaming is used Expect that consumption reduces 123mm；For the rectangular air duct being spliced by two pieces of sheet metals after bending, seaming materials consumption Reduce 98mm.

7th, use that the structure of cantilevered list flat mouth seaming closure seam compacting machine is simple, reasonable in design and processing and fabricating is simple Just, input cost is relatively low.The cantilevered list flat mouth seaming closure seam compacting machine is using easy to operate and using effect is good, practical valency Value is high, and the seaming that single flat mouth seaming is laid in the long side that is particularly suitable for use in as the rectangular metal airduct of closure seam stitches compaction treatment mistake Journey, the dismounting of rectangular metal airduct is easy, rectangular metal airduct is positioned on lower mould, and single flat mouth seaming is placed in into lower indent It is interior, compacting disk roller is pushed afterwards, and drive head forward horizontal on entablature to move, it just can be automatically performed single flat mouth seaming and close The compaction treatment process of joint close, and preventing four stacking splice material gap compactings perpendicular to sheet material direction during compaction treatment Airduct body closure seam is leaked out hidden danger.The applied widely and use behaviour of used cantilevered list flat mouth seaming closure seam compacting machine Make easy, it is unrestricted to process length and the long side width of rectangular metal airduct, passes through rotating air-duct pressure pin in the horizontal plane The open angle of airduct pressure pin is controlled, then can easy, quickly meet the compacting demand of the rectangular metal airduct of different in width long side. Thus, the cantilevered list flat mouth seaming closure seam compacting machine using it is easy to operate, using effect is good, be exclusively used in rectangular metal airduct Single flat mouth seaming closure seam compaction treatment, can effectively eliminate the sheet material interlayer spacings of single flat mouth seaming closure seam, and ensure Sealing effectiveness.

Below by drawings and examples, technical scheme is described in further detail.

Brief description of the drawings

Structural representations of the Fig. 1-1 by existing metal bellows corner seam using press-button type seaming.

Structural representations of the Fig. 1-2 by existing metal bellows corner seam using joint angle seaming.

Structural representations of the Fig. 1-3 by existing metal bellows splicing seams using single flat mouth seaming.

Fig. 1-4 by the present invention the single flat mouth seaming of use structural representation.

The structural representation of Fig. 2-1 common plate Flanged Connection Systems between existing metal bellows tube coupling.

The structural representation of Fig. 2-2 angle steel flange connection systems between existing metal bellows tube coupling.

Fig. 3-1 is the cross-sectional structure schematic diagram of Ω shapes sealing strip of the present invention.

Fig. 3-2 is the cross-sectional structure schematic diagram of O shapes sealing strip of the present invention.

Fig. 4-1 is the end construction schematic diagram of monolithic sheet material airduct tube coupling of the present invention.

Fig. 4-2 is the end construction schematic diagram of two plates airduct tube coupling of the present invention.

Fig. 5-1 is the connection status schematic diagram of Ω shapes sealing strip of the present invention plate flange together.

Fig. 5-2 is the connection status schematic diagram of Ω shapes sealing strip of the present invention and angle steel flange.

Fig. 5-3 is compensating coefficient schematic diagram of the Ω shapes sealing strip of the present invention when plate flange is used cooperatively together.

Fig. 5-4 is compensating coefficient schematic diagram when Ω shapes sealing strip of the present invention is used cooperatively with angle steel flange.

Fig. 6-1 is the connection status schematic diagram of O shapes sealing strip of the present invention plate flange together.

Fig. 6-2 is the connection status schematic diagram of O shapes sealing strip of the present invention and angle steel flange.

Fig. 6-3 is compensating coefficient schematic diagram of the O shapes sealing strip of the present invention when plate flange is used cooperatively together.

Fig. 6-4 is compensating coefficient schematic diagram when O shapes sealing strip of the present invention is used cooperatively with angle steel flange.

Fig. 7 is the layout position illustration of L-shaped reinforcing member on the outside of flange of the present invention.

Fig. 8 is the connection status schematic diagram of O shapes sealing strip of the present invention and sealing strip joint.

Fig. 9 is the structural representation of sealing strip joint of the present invention.

Figure 10 is the processing method FB(flow block) of monolithic sheet material airduct tube coupling of the present invention.

Figure 11 is the structural representation of the sheet material to be processed of monolithic sheet material airduct tube coupling of the present invention.

Figure 12 is the processing shape after inner side U-shaped mouth and the outside U-shaped mouth of monolithic sheet material airduct tube coupling of the present invention machine State schematic diagram.

Figure 13 is the use state reference chart of cantilevered list flat mouth seaming closure seam compacting machine of the present invention.

Figure 14 is structural representation of the cantilevered list flat mouth seaming closure seam compacting machine of the present invention in addition to linking arm.

Figure 15 is the close-up schematic view at A in Figure 14.

Description of reference numerals:

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

3-O shape sealing strips；4-flanging；5-Ω shape sealing strips；

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

7-press-button type seaming；8-fastening bolt；9-mounting groove；

10-1-card article；10-2-jackscrew；11-mono- flat mouth seaming；

11-1-inner side U-shaped mouth；11-2-outside U-shaped mouth；11-3-block machine；

12-1-occlusal side；12-2-flange processing side；12-3-otch；

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

14-2-limit switch；14-3-entablature；14-4-directive wheel；

14-5-handwheel；14-6-transmission belt；14-7-motor；

14-8-lance；14-9-rack；14-10-head；

14-11-vertical guide rod；14-12-compacting disk roller；14-13-pressure pin seat；

14-14-lower mould；The drives of 14-15-first；14-16-gear；

The drives of 14-17-second；14-18-airduct pressure pin；14-19-connecting pin；

14-20-bearing pin；14-21-handle；14-22-sill；

14-23-linking arm；14-24-frame；14-25-lower indent；

14-26-support；14-27-annular pushes boss；The lower pressure rack of 14-28-level；

15-L-shaped reinforcing member；16-sealing strip joint, 17-spring clip.

Embodiment

As shown in Fig. 5-1, Fig. 5-2, Fig. 6-1 and Fig. 6-2, ventilation and air conditioning system offset-type airduct leakproof of the present invention Wind constructs, including offset-type sealing structure；The offset-type sealing structure includes offset-type sealing strip, the offset-type sealing strip Between two flanges 2 of air duct flange；The air duct flange be the flange that is installed on airduct and its be angle steel flange Or plate flange, two flanges 2 are in parallel laying and consolidated by clamping structure or connecting bolt 6 therebetween altogether It is fixed；The clamping structure includes the clamping part being installed on two flanges 2；The airduct is metal bellows.

The offset-type sealing strip is open type sealing strip or closed type sealing strip；As shown in figure 3-1, the open type is close Strip of paper used for sealing is Ω shapes sealing strip 5, and the shape of cross section of the Ω shapes sealing strip 5 is Ω shapes, and it is close that the Ω shapes sealing strip 5 includes arc The strip of paper used for sealing 5-1 and symmetrical side seal bar 5-2 being connected to below arc sealing strip 5-1 left and right ends in left and right two；As Fig. 3-2 institute Show, the closed type sealing strip is O shapes sealing strip 3, and the shape of cross section of the O shapes sealing strip 3 is O shapes；The offset-type is close Strip of paper used for sealing is installed between two flanges 2.

In the present embodiment, the offset-type sealing strip was laid along one week of the air duct flange.

During actual processing, multiple tracks groove is provided with two side seal bar 5-2 lateral wall.

In the present embodiment, the groove that is set on the lateral wall of the side seal bar 5-2 is rectangular channel, and multiple tracks institute It is in parallel laying to state groove.

Thus, two side seal bar 5-2 outer side wall surface is corrugated surface, and the arc sealing strip 5-1's is outer Sidewall surfaces are smooth surface.Also, the interior side-wall surface of the Ω shapes sealing strip 5 is smooth surface.

During actual use, the air duct flange, the offset-type sealing strip and the clamping structure or connecting bolt 6 form Flanged Connection System；

The airduct includes main pipe and the branch pipe being connected with the main pipe, leads between the branch pipe and the main pipe Cross connecting pipe to be attached, the connecting pipe is elbow, three-way pipe or four-way pipe；The main pipe and the branch pipe by Multiple airduct tube couplings 1 are spliced from front to back；

In the main pipe and the branch pipe between the two neighboring airduct tube coupling 1 and the connecting pipe with it is described It is attached between main pipe and the branch pipe by the Flanged Connection System；The main pipe and the branch pipe are Ventilation duct；Two flanges 2 of the Flanged Connection System being connected between the two neighboring airduct tube coupling 1 are distinguished It is fixed on the connection end of two airduct tube couplings 1, the method being connected between the connecting pipe and the ventilation duct Two flanges 2 of blue connection system are separately fixed on the connection end of the connecting pipe and the ventilation duct.

In the present embodiment, as shown in Fig. 5-1 and Fig. 6-1, the air duct flange is common plate flange；The two of the plate flange altogether The sealing strip being provided with the individual flange 2 for the installation of arc sealing strip 5-1 or O shape sealing strip 3 of Ω shapes sealing strip 5 is pacified Tankage 9, the sealing strip mounting groove 9 are that flange 2 is bent outwardly into the groove to be formed.

The sealing strip mounting groove 9 is deep-slotted chip breaker, and the external diameter of the 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, the airduct tube coupling 1 is rectangular air duct.

During actual use, the airduct tube coupling 1 can also be the other types of airducts such as circular duct, elliptical air.

During actual processing, the airduct tube coupling 1 and its be spliced by one piece of sheet metal after bending or by two pieces of institutes Sheet metal is stated to be spliced after bending；

Longitudinal length of the splicing seams along airduct tube coupling 1 on the airduct tube coupling 1 is laid；The splicing seams are Closure seam and its be seaming seam, the seaming that seaming seam uses is single flat mouth seaming 11；

When the airduct tube coupling 1 is spliced by one piece of sheet metal after bending, the airduct tube coupling 1 is single Block sheet material airduct tube coupling, the quantity that the seaming stitches is one and it is laid in a long side of airduct tube coupling 1；

When the airduct tube coupling 1 is spliced by two pieces of sheet metals after bending, the quantity of the seaming seam It is laid in respectively in two long sides of airduct tube coupling 1 for the two and two occlusion seams.

Four side walls of the airduct tube coupling 1 include two broad side walls and two narrow side walls, and two broad side walls are in pair Claim to lay and two narrow side walls are laid in symmetrical, the long side is the broad side walls of airduct tube coupling 1.

In the present embodiment, the front and rear sides of the airduct tube coupling 1 are provided with flange 2, the flange 2 and airduct pipe 1 perpendicular laying is saved, the flange 2 is integrated with the processing and fabricating of airduct tube coupling 1.

During actual processing, the airduct tube coupling 1 is integrated with the processing and fabricating of flange 2, and flange 2 is the plate method altogether Blue farad side (also referred to as ring flange).

In the present embodiment, as shown in figure 12, the front side of four side walls of the airduct tube coupling 1 and rear side are provided with flange Side 2.

In the present embodiment, as shown in Fig. 4-1, the airduct tube coupling 1 is spliced by one piece of sheet metal after bending, institute The quantity of seaming seam is stated as one and it is located in a long side of airduct tube coupling 1, and the airduct tube coupling 1 is monolithic sheet material Airduct tube coupling.

Also, the airduct tube coupling 1 includes tube coupling body, the rear and front end of the tube coupling body is provided with described in one The flange 2 of plate flange altogether, two flanges 2 that the tube coupling body rear and front end is set are laid in symmetrical.

Also, the seaming seam is positioned at the intermediate region of the long side of airduct tube coupling 1.

During actual processing, as shown in the Fig. 4-2, the airduct tube coupling 1 can also be by two pieces of sheet metals after bending It is spliced, the quantity of the seaming seam is two, and two seaming seams are located at two long sides of airduct body 1 respectively On.Also, two seaming seams are located at the intermediate region of two long sides of airduct body 1 respectively.

In the present embodiment, as Figure 1-4, single flat mouth seaming 11 include inner side U-shaped mouth 11-1 and with inner side U-shaped mouth It is provided with rear side of the outside U-shaped mouth 11-2 of 11-1 occlusions, the outside U-shaped mouth 11-2 spacing to inner side U-shaped mouth 11-1 progress Block machine 11-3, the block machine 11-3 is that the sheet metal on rear side of the U-shaped mouth 11-2 of outside curves inwardly the boss to be formed.

In the present embodiment, the block machine 11-3 is arc.During actual processing, the block machine 11-3 can also be other shapes Shape.

Also, the space D in the middle part of the block machine 11-3 between the U-shaped mouth 11-2 front ends of outside is 12mm~18mm.

In the present embodiment, the space D in the middle part of the block machine 11-3 between the U-shaped mouth 11-2 front ends of outside is 14.5mm.

, can according to specific needs, to the spacing between in the middle part of block machine 11-3 and outside U-shaped mouth 11-2 front ends during actual processing D is to adjust accordingly.

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

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

During actual processing, the card article 10-1 can also use other shapes of clamping bar.

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

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

A kind of method being processed to the monolithic sheet material airduct tube coupling as shown in Figure 10, comprises the following steps：

Step 1: sheet metal is cut：According to the structure of inner side U-shaped mouth 11-1 and outside U-shaped mouth 11-2 on airduct tube coupling 1 With size, the both sides up and down of the rectangular metal sheet material are cut respectively using plate cutting equipment, obtain two occlusions Side 12-1；Also, according to the structure and size on the upper flange side 2 of airduct tube coupling 1, using the plate cutting equipment to the rectangle The front and rear sides of sheet metal are cut respectively, obtain the flange processing side 12-2 of two flanges 2；Meanwhile according to The installation position of four ribs on airduct tube coupling 1, it is in parallel laying to be respectively cut four on two flange processing side 12-2 Otch 12-3, obtain the sheet material to be processed of airduct tube coupling 1, refer to Figure 11；

The sheet material to be processed is including tube coupling body sheet material 12-4, two positioned above and below the tube coupling body sheet material 12-4 two The occlusal side 12-1 of side and two flanges respectively positioned at the tube coupling body sheet material 12-4 front and rear sides process side 12-2；

Step 2: seaming is processed：Occlusal side 12-1 described to two in step 1 carries out seaming processing respectively, obtains inner side U-shaped mouth 11-1 and outside U-shaped mouth 11-2；

Step 3: flange processing side processing：Flange processing side 12-2 described to two in step 1 is processed respectively, and Obtain two flanges 2；

Step 4: tube coupling body sheet material is bent：Four otch along on the processing of flange described in step 1 side 12-2 12-3, four bendings are carried out to tube coupling body sheet material 12-4, obtain the tube coupling body of airduct tube coupling 1；

Step 5: seaming joint close and being compacted：By inner side U-shaped mouth 11-1 and outside U-shaped mouth 11-2 snappings described in step 2, And compaction treatment is carried out to inner side U-shaped mouth 11-1 and outside U-shaped mouth 11-2 using compacting machine, complete the processed of airduct tube coupling 1 Journey.In the present embodiment, after inner side U-shaped mouth 11-1 described in step 2 and outside U-shaped mouth 11-2 snappings, single flat mouth seaming is completed 11 joint close process.

When flange processing side processing is carried out in the present embodiment, in step 3, once flange 2 is processed using rolling technology Shaping.

During actual processing, the seaming of the airduct tube coupling 1, which seams, to be put on the corner, and in the flange 2 after joint close Inner side corner fix L-shaped reinforcing member 15 respectively.In the present embodiment, the L-shaped reinforcing member 15 is to be assembled in the inner side of flange 2 four The corner brace at angle, and be fixed between the corner brace and flange 2 by fixing bolt, refer to Fig. 7.

Also, to cover the occlusion seam, stiffening plate is also devised at the back side of flange 2, and in stiffening plate region Stiffening plate is set to carry out multiple spot impermeable riveting with flange 2 using without rivet technique.

As shown in figure 8, being simple processing, the offset-type sealing strip is divided into the offset-type sealing strip section of 4 vertical bar shapeds, It is attached between the two neighboring offset-type sealing strip section by a sealing strip joint 16.The sealing strip joint 16 be 90 ° of elbows, and the offset-type sealing strip sections of 4 vertical bar shapeds is formed by connecting a square by 4 sealing strip joints 16 The spliced sealing strip of shape, the sealing strip joint 16.As shown in figure 9, before and after the sealing strip joint 16 is arc-shaped joint and its Both ends are provided with the interface for offset-type sealing strip section installation.The sealing strip joint 16 is that a size is Φ 90 ° of elbows that 9mm × 15mm hollow pipe and its radius are 12mm.Press airduct tube coupling 1 in four offset-type sealing strip sections Specification block after, respectively insert sealing strip joint 16 in, that is, form a sealing chain supporting with the air duct flange.

So, washed in a pan using the present invention by setting sealing strip joint 16 respectively between the corner of two flanges 2 The drawbacks of adpting flange corner is filled up and polluted to ventilation and air conditioning system and environment using fluid sealant in traditional handicraft is eliminated. In order that the corner brace can accommodate sealing strip joint 16, the arc installed for sealing strip joint 16 is correspondingly provided with the corner brace Connected in star.Meanwhile the corresponding a little fluid sealant of painting on each flange 2, the sealing chain assembled is bonded at flange 2 On, each interface bonds only on one side flange 2, and the air duct flange group is to very easy.

In the present embodiment, compacting machine described in step 5 is cantilevered list flat mouth seaming closure seam compacting machine；

As shown in Figure 13, Figure 14 and Figure 15, the cantilevered list flat mouth seaming closure seam compacting machine include frame 14-24, Entablature 14-3 on frame 14-24, the sill 14-22 immediately below entablature 14-3 and can be along entablature 14-3 carries out movable head 14-10, and the head 14-10 includes support 14-26, below support 14-26 and right Compacting disk roller 14-12 that single flat mouth seaming 14-11 is compacted downwards and on support 14-26 and drive compacting disk roller The vertically movable mechanism that 14-12 is moved up and down, the compacting disk roller 14-12 are arranged on the vertically movable actuator base, The compacting disk roller 14-12 is located above sill 14-22, and the compacting disk roller 14-12 is in parallel cloth with sill 14-22 If motivation head 14-10 is provided with the support 14-26 carries out movable movable drive mechanism；The lower horizontal stroke It is in parallel laying that lower mould 14-14, the lower mould 14-14 and sill 14-22 are provided with beam 22, the lower mould 14- 14 top is provided with the lower indent 14-25 placed for single flat mouth seaming 11, length of the lower indent 14-25 along sill 14-22 Degree direction is laid, and lower indent 14-25 is positioned at compacting disk roller 14-12 underface；The compacting disk roller 14-12 is in water The cylindric disk roller that plain cloth is set, it is peripherally disposed on the lateral wall of the cylindric roller to there is annular to push boss 14-27, The annular pushes the surface that boss 14-27 is located at lower indent 14-25；The left and right sides of the sill 14-22 is set respectively It is in horizontal layout to be equipped with more airduct the pressure pin 14-18, the airduct pressure pin 14-18 that horizontal support is carried out to airduct tube coupling 1；It is more The individual airduct pressure pin 14-18 is laid in same level, and multiple airduct pressure pin 14-18 upper surface with Lower mould 14-14 upper surface flush.

In the present embodiment, the cantilevered list flat mouth seaming closure seam compacting machine also includes being arranged on upper horizontal stroke in hinged way Linking arm 14-23, the linking arm 14-23 anterior beam 14-3 one end is hinged end and its other end is pin end, described Linking arm 14-23 hinged end is arranged on entablature 14-3 front portions by jointed shaft, and the pin end of the linking arm 14-23 is with Crossbeam 14-22 front portions are provided with the pin-and-hole of supply and marketing axle 14-20 installations.

In the present embodiment, multiple air duct pressure pin 14-18 are provided with the left and right sides side wall of the entablature 14-3 The pressure pin seat 14-13 of the inner installation, described airduct pressure pin 14-18 the inners are arranged on pressure pin seat 14-13 in hinged way.

Also, by vertically to the connecting pin 14-19 of laying between the airduct pressure pin 14-18 and pressure pin seat 14-13 It is attached.

During actual use, the airduct pressure pin 14-18 can be rotated in the horizontal plane around connecting pin 14-19.

In the present embodiment, three airduct pressure pin 14-18 are respectively arranged with left and right sides of the sill 14-22, and under The airduct pressure pin 14-18 set at left and right sides of crossbeam 14-22 is laid in symmetrical.

, can according to specific needs, to airduct pressure pin 14-18 set by the sill 14-22 left and right sides during actual use Quantity and Ge Gen airduct pressure pins 14-18 installation position adjust accordingly respectively.

In the present embodiment, the frame 14-24 includes horizontal base and vertically standing on rear side of the horizontal base Post, the entablature 14-3 and sill 14-22 are in horizontal layout, and the entablature 14-3 and sill 14-22 are respectively positioned on On front side of the vertical upright column and the rear end of the two is installed on the vertical upright column.

In the present embodiment, the support 14-26 is cubic type steel bracket.

During actual use, the support 14-26 can also use other types of support frame.

In the present embodiment, the vertically movable mechanism is hand operated shifting mechanisms；The hand operated shifting mechanisms are included positioned at branch Pressure rack 14-28 under level above frame 14-26, above support 14-26 and horizontal lower pressure rack 14-28 is driven to carry out up and down Mobile handwheel 14-5 and two vertical guide rod 14-11 being separately mounted under level at left and right sides of pressure rack 14-28, the water Flat lower pressure rack 14-28 is arranged on handwheel 14-5；The wheel shaft of the compacting disk roller 14-12 is in horizontal layout, the compacting disk roller 14-12 wheel shaft left and right ends are separately mounted to two vertical guide rod 14-11 bottom；Two vertical guide rods 14-11 is located at the support 14-26 left and right sides respectively.

In actual use, the vertically movable mechanism can also use electronic travel mechanism.

In the present embodiment, the head 14-10 also include along entablature 14-3 tops move forward and backward upper walking mechanism and The lower walking mechanism moved forward and backward along entablature 14-3 bottoms, the upper walking mechanism are identical with the structure of the lower walking mechanism And both at wheel type traveling mechanism；The wheel type traveling mechanism includes front side walking mechanism and positioned at the front side walking mechanism The rear side walking mechanism of rear side, the front side walking mechanism and the rear side walking mechanism are symmetrically mounted on support including two The directive wheel 4 of the left and right sides inside 14-26.

During actual installation, the movable drive mechanism is attached with support 14-26.

Also, the movable drive mechanism includes movable transmission mechanism and the drive on support 14-26 Dynamic motor 14-7, the movable transmission mechanism is rack and pinion drive mechanism or sprocket wheel chain drive；It is described front and rear It is connected between movement and transmission mechanism and motor 14-7 by pulley transmission mechanism；

The rack and pinion drive mechanism includes the gear 14-16 and and gear being connected with the pulley transmission mechanism The rack 9 that 14-16 coordinates, the rack 9 are arranged on entablature 14-3 bottoms；The sprocket wheel chain drive includes and institute The chain stated the sprocket wheel of pulley transmission mechanism connection and coordinated with the sprocket wheel, the chain are arranged on entablature 14-3 bottoms Portion.

During actual installation, the pulley transmission mechanism includes being coaxially mounted on motor 14-7 power output shaft The first drive 14-15 and the second drive 14- for being connected by transmission belt 14-6 and the first drive 14-15 17；The gear 14-16 or described sprocket coaxialities are on the second drive 14-17 wheel shaft.

In the present embodiment, the movable transmission mechanism is rack and pinion drive mechanism.

During actual use, the movable transmission mechanism can also use other types of transmission mechanism.

Meanwhile the cantilevered list flat mouth seaming closure seam compacting machine also includes two limit switch 14-2, described in two Limit switch 14-2 is respectively positioned at the front limit switch for being laid in entablature 14-3 front portions and behind entablature 14-3 rears Limit switch, the rear limit switch are arranged on frame 14-24.

In the present embodiment, the rear limit switch is arranged on the vertical upright column.

Meanwhile the front and rear sides of the support 14-26 be respectively arranged with the front limit switch and it is described after spacing open Close the lance 14-8 being used cooperatively, the lance 14-8 in horizontal layout and its be located at entablature 14-3 tops.

In the present embodiment, handle 14-21 is installed on the pin joint axle of the linking arm 14-23.

During actual processing, single flat mouth seaming 11 is located in the long side of airduct tube coupling 1.Four of the airduct tube coupling 1 Side wall includes two broad side walls and two narrow side walls, and two broad side walls are in symmetrical laying and two narrow side walls are in symmetrical Lay, the long side is the broad side walls of airduct tube coupling 1.

In the present embodiment, the entablature 14-3 and sill 14-22 are rectangular steel pipe.

During actual use, the course of work of the cantilevered list flat mouth seaming closure seam compacting machine is as follows：

Step A, the bearing pin 14-20 between linking arm 1 and sill 14-22 is extracted, hand-held handle 14-21 is by linking arm 1 180 ° are rotated up, makes to be changed into open state from closed configuration between entablature 14-3 and sill 14-22 front portions；

Step B, according to the width of the long side of airduct tube coupling 1, by 6 airduct pressure pin 14-18 in the horizontal plane Rotate, two airduct pressure pin 14-18 of symmetrical laying is laid in splayed, then airduct tube coupling 1 is supported in down On mould 14-14, and make in the lower indent 14-25 of single insertion of flat mouth seaming 11, airduct tube coupling 1 passes through 6 airduct pressure pin 14- 18 are supported；

Step C, linking arm 14-23 is rotated down 180 °, the closure for completing entablature 14-3 and sill 14-22 connects Connect；

Step D, rotation hand wheel 14-5, and it is pressed downward compacting disk roller 14-12 by two vertical guide rod 14-11 Tight single flat mouth seaming 11；

Step E, start motor 14-7, and pass through the pulley transmission mechanism and the movable transmission mechanism It is engaged, drives head 14-10 to be moved from the front to the back in entablature 14-3, in head 14-10 moving process, drives compacting disk roller 14-12 completes the splicing compacting process of single flat mouth seaming 11 along single rolling straight forward of flat mouth seaming 11.

In actual use, the front limit switch and rear limit switch are with being controlled to motor 14-7 Controller connects.When head 14-10, which runs and lance 14-8 anterior to entablature 14-3, hits the front limit switch, head 14-10 operations stop and snap back motion, stop until lance 14-8 hits the rear limit switch.

To sum up, function is compacted to laying single flat mouth seaming 11 in long side using the cantilevered list flat mouth seaming closure seam Airduct tube coupling 1 as closure seam carries out compaction treatment, and perpendicular to sheet material direction by four stacking splice material gaps compactings with Prevent airduct body closure seam to leak out hidden danger.

During actual processing, as shown in figure 3-1, the profile of the Ω shapes sealing strip 5 is Ω shapes, the thickness of Ω shapes sealing strip 5 Uniformly and its thickness be 1.5mm, the material of the Ω shapes sealing strip 5 be rubber and its there is certain elasticity.Meanwhile the side Portion sealing strip 5-2 lateral wall is designed with that width is 1mm and width is 0.2mm (cross sectional dimensions of i.e. described rectangular recess) Strip ripple, binding agent is carried on the lateral wall of the side seal bar 5-2.During actual use, the Ω shapes sealing strip 5 passes through The madial wall of the flange 2 of plate flange altogether on the outside of side seal bar 5-2 bonds, 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 the mounting groove 9 is 11.5mm.Also, actual processing When, installation position of the mounting groove 9 on flange can be adjusted accordingly according to specific needs.

During actual use, obturation effect of the Ω shapes sealing strip 5 under the normal connection status of plate flange altogether is superior. The arc sealing strip 5-1 of the Ω shapes sealing strip 5 internal diameter is Φ 5.8mm, internal diameter and the arc sealing strip 5- of the mounting groove 9 1 external diameter is consistent.Therefore, as shown in fig. 5-1, under the normal connection status of plate flange altogether, the two of the Ω shapes sealing strip 5 The individual side seal bar 5-2 by pressure and together, and arc sealing strip 5-1 be tightened on flange 2 set by peace In tankage 9, formed such as hollow bean sprouts shape sealing route.Because the elastic recovery characteristic of Ω shapes sealing strip 5 acts on, with two flanges The inwall of mounting groove 9 on 2 is brought into close contact.Also, joint place is arc-shaped sealed pathway, and sealing effectiveness is than traditional strip sealing strip Significantly improve.

In addition, under the plate flange exception connection status altogether, the Ω shapes sealing strip 5 shows obvious compensatory Energy.As shown in Fig. 5-3, when between two flanges 2 of plate flange altogether because processing, assembling, installing, safeguarding and running In when there are the reasons such as error, deformation and being unable to keeping parallelism and tenesmus occur, between two flanges 2 on the top of airduct tube coupling 1 It is in closed configuration between two flanges 2 of opening-like state and the bottom of airduct tube coupling 1.

When opening-like state between two flanges 2, two side seal bar 5-2 of the Ω shapes sealing strip 5 Opening, pumped (conveying) medium enters Ω shapes sealing strip 5 along the space among two side seal bar 5-2, and under pressure Fill the inner chamber of Ω shapes sealing strip 5 and be close to the madial wall of flange 2 of the plate flange altogether.Also, pumped (conveying) medium pressure is bigger, Paste tighter, sealing effectiveness is better；

When between two flanges 2 being in closed configuration, two flanges 2 are by two sidepieces of Ω shapes sealing strip 5 Sealing strip 5-2 is compressed, and two side seal bar 5-2 seal as traditional strip gasket bar, but Ω shapes The arc sealing strip 5-1 of sealing strip 5 plays double sealing effect under the effect of foregoing elastic recovery characteristic；

So, it is in by opening to the gradual transition state remained silent, its sealer from top to bottom between two flanges 2 Reason is also progressively switch to two sidepieces by Ω shapes sealing strip 5 mainly being sealed by the inner chamber of Ω shapes sealing strip 5 Joint sealing function is played in sealing strip 5-2 and inner chamber.

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

During actual processing, the external diameter of the O shapes sealing strip 3 is Φ 6mm~Φ 16mm and its wall thickness is 1mm~2.5mm.

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

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

During actual use, obturation effect of the O shapes sealing strip 3 under the normal connection status of plate flange altogether is superior. As in Figure 6-1, under the normal connection status of plate flange altogether, O shapes sealing strip 3 squeezes the mounting groove 9 of plate flange altogether The lower both sides up and down of pressure effect are extruded, and form such as dish-shaped cross section sealing route.Because the elastic recovery characteristic of O shapes sealing strip 3 acts on, The madial wall of mounting groove 9 with being set on two flanges 2 is brought into close contact, and joint place is curve-seal path, sealing effectiveness Significantly improved than conventional band sealing strip.

In addition, under the plate flange exception connection status altogether, the O shapes sealing strip 3 shows obvious compensation performance. As shown in Fig. 6-3, when between two flanges 2 of plate flange altogether because process, assemble, install, safeguard and running in When the reasons such as appearance error, deformation are unable to keeping parallelism and tenesmus occur, it is between two flanges 2 on the top of airduct tube coupling 1 Open state.Pumped (conveying) medium is acted on the outside of the inner circumferential of O shapes sealing strip 3, O shapes sealing strip 3 is adjacent to installation under pressure The upper portion side wall of groove 9, the flap portion of O shapes sealing strip 3 are then got into the gap between two flanges 2, form such as lamp Cover cross section sealing route.Equally, because the external diameter of O shapes sealing strip 3 is more than the internal diameter of mounting groove 9, even if two airduct tube couplings 1 A determining deviation is pulled open, pumped (conveying) medium laterally flattens O shapes sealing strip 3, and the flap portion of O shapes sealing strip 3 gets into two methods Height between blue side 2 in gap decreases, but the upper portion side wall of the mounting groove 9 set on flange 2 still tightly blocks O shapes Sealing strip 3, because this compensatory michanism of O shapes sealing strip 3 makes its sealing function to continue to keep.

According to general knowledge known in this field, supervisor's (i.e. air main) and branch pipe are removed in the media conveying path of ventilation and air conditioning system (i.e. branch's airduct) outside, also by by elbow, come back bending, reducing is curved, three-way pipe, four-way pipe etc. are combined by actual demands of engineering The pipe fitting that forms, it is installed on airduct to adjust air quantity and close the air-valve of indivedual branch pipes and prevent that noise is incoming indoor Various silencers, eventually arrive at air port.In addition to supervisor, branch pipe and various pipe fittings, other system units and accessory are typically special Industry manufacturer production, its materials thickness and crudy one to two class higher than airduct, the airtight performance of housing and connection The flatness of flange can trust substantially, existing subject matter be system unit and the end flanges of accessory two be mostly band steel flange or Angle steel flange, and the flange installed on airduct is mostly to be total to plate flange.It is made up of the media conveying path of above-mentioned ventilation and air conditioning system Analysis, region is mainly leaked out on supervisor, branch pipe and various pipe fittings.In addition, the operating pressure of ventilation and air conditioning system is along pipeline Medium flow direction gradually reduces, and the static pressure of system end branch pipe is minimum, and relative inleakage is also small, the quantity research therefore air-line system leaks out Based on main pipe, supplemented by branch pipe.Wherein, main pipe includes supervisor and main.Popular says, supervisor refers to ventilation and air conditioning system Middle caliber maximum standpipe or horizontal pipe, main refer to that caliber is less than the horizontal pipe of supervisor；Branch pipe refers to be connected with main When the pipeline of end, actual use, branch pipe.

The reasons of air leakage of metal bellows ontological existence is analyzed below：Main pipe in metal bellows is air conditioner The important component of air is conveyed in system, usage amount is very big.Metal bellows use roll bending as raw material mostly, by 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 Shaping, longitudinal corner flanging, longitudinal direction closure seam and with flange angle assembling etc. technical process, make a section section size, specification, The different tube coupling of shape.It is clear that longitudinal corner seam (or longitudinal closure seam) can be produced in airduct body process And horizontal tube coupling combination of interfaces seam.Longitudinal corner seam is most three of different sizes with airduct specification, and longitudinal closure seam only one Bar.During for big specification airduct because needing multiple board material splices, also vertically and horizontally splicing seams.

Metal bellows corner seam (or closure seam) has three kinds of connection methods：Welding, riveting connect with seaming.Because seaming connects Technique has good intensity height, tightness, seaming seam continuous uniform, does not destroy plate surface quality, good appearance, is easily achieved machine Toolization processing etc. outstanding feature and obtain extensive use.

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, it is by side the characteristics of press-button type seaming 7 Wooden bat beat will single port insert twoport after i.e. complete plate corner seam connection, but because the seaming exist twoport shape after insert port it is normal Close, the defect such as single port insertion is not easy, sealing effectiveness does not ensure, coupling stiffness is low, be only used for medium low pressure system.For ingredient Single flat mouth seaming joint close after, equally also to hold the lumps of wood or using special equipment complete seaming joint close process.Single flat mouth seaming It is widely used after joint close because of the features such as four layers of splicing seams are overlapping, bonding strength is high, sealed pathway is long, good sealing effect.

Insert port is normally opened (1~1.2mm of insert port gap) after joint angle seaming 13 shapes because of double seamings, and single port insertion is relative Conveniently, the lumps of wood but is also held after single, double seaming snap-in or electric hand tool pulls cork cot down and completes seaming joint close.For a long time with Come, it is believed that joint angle seaming 13 has the advantages that coupling stiffness is high, sealed pathway is long, sealing effectiveness is reliable and is widely used in High, medium and low voltage system.But by deep examination and on-site verification, joint angle seaming 13 because structure type, flow forming process and The influence of joint close process, its sealing effectiveness be not so perfect.Especially using airduct materials thickness be 0.75mm as separation, leakage Blower fan reason shows two kinds of multi-forms.

Wherein, as sheet metal thickness≤0.75mm, the sealing structure measure of sheet material seaming connection is only taken, airduct leaks out Measure relatively large.Because seaming former is according to the upper thickness limit in processing sheet metal thickness scope 0.5mm~1.2mm 1.2mm designs, arc radius causes greatly very much seaming position elasticity big after sheet material seaming shaping thick 0.5mm~0.75mm, double Mouthful insert port presence >=1mm gap, and when twoport seaming is molded stretcher strain caused by cork cot because follow-up compression is lost Surely there is wrinkling (also known as side wave).No matter the hand-held lumps of wood or hand electric linking machine only cork cot is pulled down and can not Sheet material interlayer spacings are eliminated, sheet material seal length is only fore shaft edge lengths, but because of waveform wrinkle, cork cot can not after having stretched Shorten, interrupted phenomenon of dehiscing occur after joint close, the expection sealed by cork cot seriously gives a discount, thus corner seam (or Closure seam) place leaks out seriously；Above-mentioned reason be using thin plate processing joint angle seaming 13 as corner seam (or closure seam) when because Stacking slack and undisciplined, interrupted opening and closing of cork cot in gap etc. cause the basic reason leaked out.

And as sheet metal thickness >=0.75mm, because timber intensity increases, side wave phenomenon caused by cork cot when seaming is molded Reduce.Also, it can not be adjacent to completely with twoport both sides sheet material after single port insertion, and because fore shaft edge lengths (i.e. side leg) are only 8mm or so, rigidity is larger, and no matter hand-held the lumps of wood or hand electric linking machine can not pull cork cot completely down 90 ° and single port It to be close to, the second barrier portion sealed by cork cot is out of control, and sheet material interlayer spacings can not be eliminated during same joint close, Thus corner seam (or closure seam), which is under system pressure-bearing environment, still suffers from air leakage phenomena；Above-mentioned reason is that slab uses joint angle Because cork cot slenderness ratio is small, rigidity is big, can not leak completely fore shaft after joint close etc. when seaming 13 is as corner seam (or closure seam) The basic reason of wind.

As shown in the above, rectangular metal airduct body corner seam (or closure seam) is connected using joint angle seaming 13, When sheet metal thickness is in the range of 0.5mm~1.2mm, sealing structure is only relied on, can not eliminate hidden danger of leaking out.In the present invention, adopt Fluid sealant is applied after seaming seam positive pressure side removing surface dirt and greasy dirt or pastes the method sealed after sealant tape, sealing Effect can be improved.But with the long-term cold and hot conversion for blowing brush and medium temperature for having pressure medium, fluid sealant or sealing Adhesive tape can gradually come off or aging, and the production and use of fluid sealant or sealant tape are to natural environment and room air product Matter has certain pollution.Described positive pressure side refers to close to the side of ventilating system entrance (i.e. close to air inlet side).

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

According to general knowledge known in this field, for flanged connection system (the also referred to as flange between airduct tube coupling in ventilation and air conditioning system Connection system) for, mainly connect zero with multiple flanges by sealing gasket between tube coupling adpting flange (also referred to as union flange), flange Part etc. forms.Traditional Flanged Connection System be between the flange (also referred to as ring flange disk) of airduct tube coupling, it is close using strip Packing sealing is revealed with reducing medium in pipe, as shown in Fig. 2-1 and Fig. 2-2.This sealing structure is in Flanged Connection System each group Member shape rule, processing assembling standard, sealing can be played well when installation meets the requirements, ventilation and air conditioning system is in static Function.

But Practical Project practice in, due in Flanged Connection System each component parts processing, assembling, installation, safeguard etc. Implement factors be present in link and ventilation and air conditioning system running, cause the sealing property part of Flanged Connection System to be lost Lose, the increase of medium amount of leakage.

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

For angle steel flange connection system, at angle steel flange group weld-ring section, four angles caused by welding deformation Steel is mutually inclined or misalignment, flange group welding crator stay in sealing surface and the reason such as do not polish, will all make the ring flanges of two connections close The sealing of front cover one week spacing is uneven, and sealing gasket consistency of thickness, and such flange sealing surface one week is to the pressure of sealing gasket and close It is uneven to seal positive effect.

For common plate Flanged Connection System, in common plate flange roll forming link, because of Elastic recovery effect flange face Pre-large post-small change is presented with the angle of airduct tube wall, and intermediate region angle is close to 90 °.When so flange connects, altogether Plate flange forming error can be to the influence of sealed section.Wherein, two standard flange side (also referred to as ring flange) phases in common plate flange It is strip with rear intermediate cross-section shape (i.e. sealed section shape), and sealed section and the perpendicular laying of airduct tube coupling.Plate altogether The forming errors of flange are mainly reflected in following three aspects, and first, close when two flange edge tails are relative in common plate flange Envelope section is shaped as inverted trapezoidal, i.e., the faying face of two flanges is necking (being gradually reduced from outside to inside)；Secondth, common plate method Sealed section is shaped as trapezoidal when two flange head ends are relative in orchid, i.e., the faying faces of two flanges is dehisces (by outer To interior gradually increase)；3rd, bar shaped sealed section is inclined when two flange first and ends are relative in plate flange altogether.Its In, the above-mentioned three kinds flange seal cross section structures for forming errors occur, be to be alternately present on a flange, i.e., it is close The shape for sealing section is consecutive variations.The one week pressure and sealing effectiveness to sealing bedding and padding of flange sealing surface is also to change at any time , thus sealing effectiveness is greatly affected.

During actual processing, although using stamping flange angle by force by flange head and the tail at the corner of airduct tube coupling both ends Both ends are strapped in same plane, but because the flange between the flange angle of Elastic recovery effect two is still gone out by above-mentioned three kinds of forming errors Existing warpage, and heeling condition is presented.

In addition, assembling link in airduct tube coupling, one week equally distributed multiple bolt is relied between the flange of angle steel flange Connection, because space limits, various quick, electronic fastening tools can not be put to good use, can only use common manual spanner, its Efficiency lowly causes bolt tightness to differ, or even some occasions only single-handedly screw.Particularly airduct is locally in space chi Very little limited occasion, bolt connection process can not just may be carried out；If meet the overproof flange of foregoing unfitness of butt joint or The aperature of angle of airduct flange four or corner seaming are overlapping, and one week gap uniformity degree then less can guarantee that between flange.Therefore, airduct When tube coupling assembles, the non-fastening area of connecting bolt with because of angle steel welding deformation, misalignment or seaming is overlapping causes sealing gasket not to be compacted The sealing function in region is all by some lost.

And altogether, connection is in addition to corner embedded with flange angle and using bolt fastening between the flange of plate flange, and remaining flange is only By the wide top margins of 10mm on the outside of the interrupted clamping flange side of spring clip 17.Plate flange and spring clip 17 use roll forming altogether, Its scale error is unavoidable.In terms of implementation result, mainly plate flange top margin width dimensions are difficult to the inner width size of spring clip 17 together Matching, if the inner width size of spring clip 17 is big, two flanges are not clamping；If the inner width size of spring clip 17 is small, spring clip 17 does not fill； Firmly clamping by force, the top margin stagger arrangement up and down on adjacent flanges side can be caused.As can be seen here, the disadvantage of plate flange connection is altogether The sealing effectiveness of junction fluctuates with common plate flange roll forming quality between airduct tube coupling, and banjo clip (i.e. spring clip 17) But the regulatory function without adaptation, cause sealing function not firm, unstable.

During actual use, the roll forming quality problems of plate flange are mainly reflected in common plate flange corner altogether and edge is not pressed Tightly, altogether plate flange corner smear fluid sealant excessively cause it is local padded so that gap increase, spring clip 17 between flange into Type is irregular etc..

And in the present invention, to overcome above mentioned problem existing for common plate Flanged Connection System, replaced using jackscrew clamping structure Spring clip 17, eliminate influence of the plate flange top margin rolling quality to sealing effectiveness together of spring clip 17.Connected with angle steel flange Equally, clamping is carried out using common manual wrench fastening jackscrew.

In addition, in integral hoisting link after the assembling of multiple airduct tube coupling ground in metal bellows, because of airduct during lifting Suspension centre skew, tilt, shake the problems such as, suspension and support highly differ by force it is fixed, suspension and support spacing is excessive, airduct between suspension and support Gravitative Loads, the adiabatic construction in airduct surface make the reasons such as system weight increase, will cause the curved tenesmus of pipeline or airduct pipe Misplaced up and down between two flanges of internode flange, it is in up-small and down-big trapezium structure to make union flange sealed section, is caused Union flange bottom half cycle reduces obturation effect because gap increases.

Also, link is run in ventilation and air conditioning system, when pressure medium gradually increases, because air-line system is intrinsic frequency Relatively low sheet metal ghost splicing construction, there is pressure medium easily to cause system vibration along the flowing of airduct inwall.The big angle steel of rigidity The amplitude and frequency of Flanged Connection System are smaller, airtight performance are influenceed little；And the rigidity of plate Flanged Connection System is smaller altogether, Particularly flange springs folder 17 is two flange top margins by elastic clamping union flange, thus unadjustable；Ventilation is empty When adjusting system vibrates, with the changing of the relative positions above and below certain frequency, the sealing gasket between flange is worn and is thinned two flanges repeatedly, If things go on like this spring clip 17 gradually loses clamping action, and the obturation effect between flange constantly reduces.And above procedure with System media pressure increase and it is more obvious.Finally, airduct can not bear the blast of blower fan top gear, and air quantity and blast can not Meet the requirement of ventilation and air conditioning system.

As shown in the above, by analyzing the reasons of air leakage of ventilation and air conditioning system, draw to draw a conclusion：

Firstth, the main of ventilation and air conditioning system leaks out region on main pipe and various pipe fittings；

Secondth, because seaming is slack and undisciplined, seaming layer when metal bellows body corner seam (or closure seam) commonly uses joint angle seaming 13 Folded gap is presented interrupted folding phenomenon or can not be close to single port because slenderness ratio is small without elimination, cork cot or because of side wave realizes conjunction Seam, if only leaning on the sealing structure connected with sheet material, the main contributor that airduct corner seam (or closure seam) will leak out as airduct body；

3rd, the reason for airduct tube coupling adpting flange system of metal bellows is in system operation, and inleakage is exceeded Error be present to implement link in processing, assembling, installation, maintenance etc., the sealing surface of two flanges is unable to keeping parallelism and two The thickness for being smaller than sealing gasket of person.

Following four conclusion is found through analysis：Firstth, angle steel flange processing belongs to nonstandard processing operation, is worked after flange group welding Plane can use machining to reach higher flatness, but the rising of cost and the slow of work efficiency are difficult to bear；Secondth, common plate The interrupted rolling forming mode of flange determine section bar in the longitudinal direction front end dehisce, rear end necking this principle defect, this Invention substitutes rolling forming mode using bending and forming method can greatly reduce this elastic recovery, the rising of its same cost and Work efficiency slowly also is difficult to receive；In addition the rolling forming error for being total to chamber size in plate flange top margin and spring clip 17 is also difficult to Avoid, the scope of error can only be reduced by improving the machining accuracy of equipment；3rd, because space limits in the assembling process of airduct tube coupling 1 System, the level of skill of operator and work quality are uneven, lack the factors such as efficient specific purpose tool, limit to a certain extent Lifting of the group of airduct tube coupling 1 to installation quality；4th, assembled in airduct tube coupling 1 and ventilation and air conditioning system runs link institute The dislocation up and down of caused air duct flange and the parabola shaped tenesmus of airduct are inevitable.According to aforementioned four conclusion, it is desirable to In air duct flange the sealing surface of two flanges 2 remain parallel and be smaller than sealing gasket thickness be it is unpractical, one Take the passive behavior such as closure to improve the seal of air duct flange connection system, its effect is still limited taste.Only Actively adapt to airduct pumped (conveying) medium characteristic and take can with the sealing structure that compensates automatically of relative position change between flange, It can be only achieved preferable sealing effectiveness.Offset-type airduct Anti-air-leakage construction of the present invention is then actively to adapt to airduct conveying Dielectric property and take can be with the sealing structure that compensates automatically of relative position change between flange, sealing effectiveness is very good, And actually use, 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, used ventilation and air conditioning system offset-type metal bellows are prevented Construction leak out as different from Example 1：The air duct flange is angle steel flange；Two flanges of the angle steel flange 2 be to be fixed on the right angle angle steel on the outside of the connection end of airduct tube coupling 1 or the connecting pipe, the airduct tube coupling 1 or described The flanging 4 being fixed on the inside of the right angle angle steel is provided with the connection end of connecting pipe.

The arc sealing strip 5-1 of the Ω shapes sealing strip 5 is located at the outside of flanging 4, and the arc sealing strip 5-1 is installed in institute Between two flanges 2 for stating angle steel flange, the side seal bar 5-2 of the Ω shapes sealing strip 5 is installed in described in two Between the flanging 4 of the inner side of flange 2；The O shapes sealing strip 3 is installed between the flanging 4 of two inner sides of flange 2.

In the present embodiment, it is fixed between two flanges 2 by connecting bolt 6, the spiral shell of the connecting bolt 6 Tightening latch and 2 perpendicular laying of flange；The connecting bolt 6 is located on the outside of the offset-type sealing strip.Also, the connection spiral shell The quantity of bolt 6 is multiple, and multiple connecting bolts were laid from front to back along one week of the air duct flange.

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

During actual use, obturation effect of the Ω shapes sealing strip 5 under the normal connection status of the angle steel flange is superior. As shown in Fig. 5-2, under the normal connection status of the angle steel flange, two side seal bars of the Ω shapes sealing strip 5 By pressure and together, and arc sealing strip 5-1 is tightened the inner side in flange 2 and flanging 4 to 5-2, formation such as hollow bean sprouts Shape seals route.It is tight with the inwall of two flanges 2 and two flangings 4 because the elastic recovery characteristic of Ω shapes sealing strip 5 acts on Closely connected conjunction, sealing effectiveness significantly improve than traditional strip sealing strip.

In addition, under the angle steel flange exception connection status, the Ω shapes sealing strip 5 shows obvious compensatory Energy.As shown in Fig. 5-4, when between two flanges 2 of the angle steel flange because processing, assembling, installing, safeguarding and running In when there are the reasons such as error, deformation and being unable to keeping parallelism and tenesmus occur, opening-like state and airduct between two flanges 2 It is in closed configuration between two flanges 2 of the bottom of tube coupling 1.

When opening-like state between two flanges 2, two side seal bar 5-2 of the Ω shapes sealing strip 5 Opening, pumped (conveying) medium enters Ω shapes sealing strip 5 along the space among two side seal bar 5-2, and under pressure Fill the inner chamber of Ω shapes sealing strip 5 and be close to the madial wall of flanging 4.Also, pumped (conveying) medium pressure is bigger, paste tighter, seal Effect is better；

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

During actual use, the taping process of the O shapes sealing strip 3 is simple and efficient, only need to be in the plate flange altogether during installation A flange 2 on temporary adhesion fix, glue consumption than Ω shapes sealing strip 5 reduce more than 98%, more save Environmental protection.

During actual use, obturation effect of the O shapes sealing strip 3 under the normal connection status of the angle steel flange is superior. As in fig. 6-2, under the normal connection status of the angle steel flange, extruding of the O shapes sealing strip 3 in the flanging 4 of the angle steel flange Strip hollow seal section is squeezed under effect, also due to O shapes sealing strip 3 is bigger than ribbon seal elasticity, because O shapes are close The elastic recovery characteristic effect of strip of paper used for sealing 3, is brought into close contact, sealing effectiveness is also than passing with the madial wall of the flanging 4 on two flanges 2 System ribbon seal significantly improves.

In addition, under the angle steel flange exception connection status, the O shapes sealing strip 3 shows obvious compensation performance. As shown in Fig. 6-4, when between two flanges 2 of the angle steel flange because process, assemble, install, safeguard and running in When the reasons such as appearance error, deformation are unable to keeping parallelism and tenesmus occur, it is between two flanges 2 on the top of airduct tube coupling 1 Open state.Pumped (conveying) medium is acted on the outside of the inner circumferential of O shapes sealing strip 3, O shapes sealing strip 3 is adjacent to flanging 4 under pressure Side wall, the flap portion of O shapes sealing strip 3 got into the gap between two flanges 2, is formed as up-small and down-big red Jujube shaped cross seals route.Also, even if two airduct tube couplings 1 pull open a determining deviation, pumped (conveying) medium is by O shape sealing strips 3 laterally flatten, and the height that the flap portion of O shapes sealing strip 3 gets between two flanges 2 in gap decreases, but The side wall of flanging 4 on flange 2 still tightly blocks O shapes sealing strip 3, because this compensatory michanism of O shapes sealing strip 3 makes its sealing Function will continue to keep.

Thus, when the air duct flange is angle steel flange, the O shapes sealing strip 3 is squeezed into up-small and down-big jujube Shape, after pumped (conveying) medium is acted on the outside of the inner circumferential of O shapes sealing strip 3, the O shapes sealing strip 3 of jujube shape is pushed into two-way wedge It is interior and the more push away the more tight；When pulling open certain distance between two airduct tube couplings 1, the extruding degree of O shapes sealing strip 3 is only Diminish, but the elastic recovery characteristic of O shapes sealing strip 3 and two-way wedge sealing principle will not change or lose.

In the present embodiment, the remainder structure of ventilation and air conditioning system offset-type metal bellows Anti-air-leakage construction is used It is same as Example 1 with annexation.

Below by the spy of conventional seals pad and offset-type sealing strip of the present invention (including Ω shapes sealing strip 5 and O shapes sealing strip 3) Property carry out corresponding comparison, comparative result refers to table 1：

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

It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention Any simple modification, change and the equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention In the protection domain of art scheme.

Claims

1. a kind of ventilation and air conditioning system offset-type airduct Anti-air-leakage construction, including offset-type sealing structure；The offset-type sealing Structure includes offset-type sealing strip, and the offset-type sealing strip is located between two flanges (2) of air duct flange；The airduct Flange is the flange being installed on airduct and it is angle steel flange or is total to plate flange, and two flanges (2) are in parallel laying And it is fixed by clamping structure or connecting bolt (6) therebetween；The clamping structure includes being installed on two methods Clamping part on blue side (2)；The airduct is metal bellows；

The offset-type sealing strip is open type sealing strip or closed type sealing strip；The open type sealing strip is Ω shape sealing strips (5), the shape of cross section of the Ω shapes sealing strip (5) is Ω shapes, and the Ω shapes sealing strip (5) includes arc sealing strip (5-1) With the symmetrical side seal bar (5-2) being connected to below arc sealing strip (5-1) left and right ends in left and right two；The closed type is close Strip of paper used for sealing is O shapes sealing strip (3), and the shape of cross section of the O shapes sealing strip (3) is O shapes；The offset-type sealing strip is installed on two Between the individual flange (2)；

The air duct flange, the clamping structure and offset-type sealing strip composition Flanged Connection System；

The airduct includes main pipe and the branch pipe being connected with the main pipe, and the branch pipe is connected with the main pipe and the two Between be attached by connecting pipe, the connecting pipe is elbow, three-way pipe or four-way pipe；The main pipe and the branch Pipe is spliced from front to back by multiple airduct tube couplings (1)；

In the main pipe and the branch pipe between the two neighboring airduct tube coupling (1) and the connecting pipe and the master It is attached between main and the branch pipe by the Flanged Connection System；The main pipe and the branch pipe are ventilation Pipe；Two flanges (2) of the Flanged Connection System being connected between the two neighboring airduct tube coupling (1) are respectively It is fixed on the connection end of two airduct tube couplings (1), is connected to described between the connecting pipe and the ventilation duct Two flanges (2) of Flanged Connection System are separately fixed on the connection end of the connecting pipe and the ventilation duct；

The airduct tube coupling (1) be rectangular air duct and its be spliced by one piece of sheet metal after bending or by two blocks of gold Category sheet material is spliced after bending；

Longitudinal length of the splicing seams along airduct tube coupling (1) on the airduct tube coupling (1) is laid；The splicing seams are Closure seam and its be seaming seam, the seaming of seaming seam is single flat mouth seaming (11)；

When the airduct tube coupling (1) is spliced by one piece of sheet metal after bending, the airduct tube coupling (1) is single Block sheet material airduct tube coupling, the quantity that the seaming stitches is one and it is laid in a long side of airduct tube coupling (1)；

It is characterized in that：The processing method of the monolithic sheet material airduct tube coupling comprises the following steps：

Step 1: sheet metal is cut：According to the knot of inner side U-shaped mouth (11-1) and outside U-shaped mouth (11-2) on airduct tube coupling (1) Structure and size, the both sides up and down of the sheet metal are cut respectively using plate cutting equipment, obtain two occlusal sides (12-1)；Also, according to the structure and size on airduct tube coupling (1) upper flange side (2), using the plate cutting equipment to described The front and rear sides of sheet metal are cut respectively, obtain flange processing side (12-2) of two flanges (2)；Meanwhile According to the installation position of upper four ribs of airduct tube coupling (1), on two flanges processing side (12-2) being respectively cut four is in The otch (12-3) of parallel laying, obtain the sheet material to be processed of airduct tube coupling (1)；

The sheet material to be processed includes tube coupling body sheet material (12-4), two positioned at the tube coupling body sheet material (12-4) up and down two The occlusal side (12-1) of side and two flanges respectively positioned at tube coupling body sheet material (12-4) front and rear sides process side (12- 2)；

Step 2: seaming is processed：Two in the step 1 occlusal sides (12-1) are carried out with seaming processing respectively, obtains inner side U Shape mouth (11-1) and outside U-shaped mouth (11-2)；

Step 3: flange processing side processing：Two in step 1 flange processing side (12-2) are processed respectively, and obtained Obtain two flanges (2)；

Step 4: tube coupling body sheet material is bent：Four otch along in the processing of flange described in step 1 side (12-2) (12-3), carry out four bendings respectively to tube coupling body sheet material (12-4), obtain the tube coupling body of airduct tube coupling (1)；

Step 5: seaming joint close and being compacted：By described in step 2 inner side U-shaped mouth (11-1) and outside U-shaped mouth (11-2) snapping, And compaction treatment is carried out to inner side U-shaped mouth (11-1) and outside U-shaped mouth (11-2) using compacting machine, complete airduct tube coupling (1) Process；

When the airduct tube coupling (1) is spliced by two pieces of sheet metals after bending, the quantity of the seaming seam is The two and two occlusion seams are laid in two long sides of airduct tube coupling (1) respectively.

2. constructed according to the ventilation and air conditioning system offset-type airduct Anti-air-leakage described in claim 1, it is characterised in that：The compensation Type sealing strip was laid along one week of the air duct flange；It is respectively provided with the lateral wall of two side seal bars (5-2) There is multiple tracks groove；

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

3. constructed according to the ventilation and air conditioning system offset-type airduct Anti-air-leakage described in claim 1, it is characterised in that：The airduct Flange is angle steel flange；Two flanges (2) of the angle steel flange are to be fixed on airduct tube coupling (1) or the connection Fixation is provided with the connection end of right angle angle steel on the outside of the connection end of pipe fitting, the airduct tube coupling (1) or the connecting pipe Flanging (4) on the inside of the right angle angle steel；The arc sealing strip (5-1) of the Ω shapes sealing strip (5) is located at flanging (4) outside Side, the arc sealing strip (5-1) are installed between two flanges (2) of the angle steel flange, the Ω shapes sealing The side seal bar (5-2) of bar (5) is installed between the flanging (4) on the inside of two flanges (2)；The O shapes sealing strip (3) it is installed between the flanging (4) on the inside of two flanges (2)；

It is fixed between two flanges (2) by connecting bolt (6), the shank of bolt and method of the connecting bolt (6) The perpendicular laying of blue side (2)；The connecting bolt (6) is located on the outside of the offset-type sealing strip.

4. constructed according to the ventilation and air conditioning system offset-type airduct Anti-air-leakage described in claim 1, it is characterised in that：The airduct Flange is common plate flange；The arc being provided with altogether on two flanges (2) of plate flange for Ω shapes sealing strip (5) Sealing strip (5-1) or the sealing strip mounting groove (9) of O shapes sealing strip (3) installation, the sealing strip mounting groove (9) are by flange (2) it is bent outwardly the groove to be formed；

The sealing strip mounting groove (9) is deep-slotted chip breaker, and the external diameter of the arc sealing strip (5-1) or O shapes sealing strip (3) is all higher than The internal diameter of sealing strip mounting groove (9).

5. constructed according to the ventilation and air conditioning system offset-type airduct Anti-air-leakage described in claim 1, it is characterised in that：The Dan Ping Mouth seaming (11) includes inner side U-shaped mouth (11-1) and the outside U-shaped mouth (11-2) being engaged with inner side U-shaped mouth (11-1), described outer It is provided with rear side of side U-shaped mouth (11-2) and spacing block machine (11-3), the block machine (11-3) is carried out to inner side U-shaped mouth (11-1) For the sheet metal on rear side of outside U-shaped mouth (11-2) is curved inwardly the boss to be formed；The block machine (11-3) is arc；

The offset-type sealing strip is divided into the offset-type sealing strip section of 4 vertical bar shapeds, the two neighboring offset-type sealing strip It is attached between section by a sealing strip joint (16).

6. constructed according to the ventilation and air conditioning system offset-type airduct Anti-air-leakage described in claim 1 or 2, it is characterised in that：It is described Air duct flange is common plate flange；Two flanges (2) are in parallel laying and carried out by the clamping structure therebetween Fixed, the part that clamps is to be installed on the card article (10-1) on the outside of two flanges (2), two flanges (2) Outer end is the dop (2-1) through being bent to form；The clamping structure be jackscrew clamping structure and its also include jackscrew (10-2), One end of the card article (10-1) is clamping end and its other end is fixing end, and the clamping end of the card article (10-1) is warp The grab being bent to form, the grab are installed on the dop (2-1) of a flange (2), jackscrew (10-2) peace In the fixing end of card article (10-1), the fixing end of card article (10-1) is fixedly secured to by the jackscrew (10-2) On the outside of another described flange (2).

7. constructed according to the ventilation and air conditioning system offset-type airduct Anti-air-leakage described in claim 1, it is characterised in that：In step 5 The compacting machine is cantilevered list flat mouth seaming closure seam compacting machine；

The cantilevered list flat mouth seaming closure seam compacting machine includes frame (14-24), the upper horizontal stroke in frame (14-24) Beam (14-3), the sill (14-22) immediately below entablature (14-3) and it can be moved forward and backward along entablature (14-3) Head (14-10), the head (14-10) includes support (14-26), below the support (14-26) and single flat mouth is stung Compacting disk roller (14-12) that mouthful (14-11) is compacted downwards and on support (14-26) and drive and be compacted disk roller (14- 12) the vertically movable mechanism moved up and down, the compacting disk roller (14-12) are arranged on the vertically movable actuator base, The compacting disk roller (14-12) is located above sill (14-22), and the compacting disk roller (14-12) is in sill (14-22) Parallel laying, movable drive mechanism is installed on the support (14-26)；It is provided with the sill (14-22) Lower mould (14-14), the lower mould (14-14) are in parallel laying with sill (14-22), the lower mould (14-14) Top is provided with the lower indent (14-25) placed for single flat mouth seaming (11), and the lower indent (14-25) is along sill (14-22) Length direction laid, and lower indent (14-25) positioned at compacting disk roller (14-12) underface；The compacting disk roller (14-12) is the cylindric disk roller in horizontal layout, peripherally disposed on the lateral wall of the cylindric disk roller to have annular Boss (14-27) is pushed, the annular pushes the surface that boss (14-27) is located at lower indent (14-25)；The sill The more airduct pressure pins (14-18) that horizontal support is carried out to airduct tube coupling (1), institute are respectively arranged with left and right sides of (14-22) It is in horizontal layout to state airduct pressure pin (14-18)；Multiple airduct pressure pins (14-18) are laid in same level, and more Upper surface flush of the upper surface of the individual airduct pressure pin (14-18) with lower mould (14-14).