CN207350809U - A kind of sealing structure of heat exchanger - Google Patents

Abstract

The utility model discloses a kind of sealing structure of heat exchanger, it is related to heat exchanger technology field, including heat exchanger body, heat exchanger body includes the water jacket for being used for the combustion chamber of fuel gas buring and being set in outside combustion chamber, clearance hole is offered on water-jacket outer wall, the boring cover for sealing clearance hole is provided with water jacket, the axis body that boring cover includes the lid of round pie and is coaxially fixed on lid, axis body is interference fitted with clearance hole, and the sealant layer for blocking gap between axis body and clearance hole perisporium is provided with clearance hole perisporium.First fluid sealant is smeared on clearance hole perisporium, then mechanical system is used vertically to squeeze into boring cover in clearance hole to realize sealing, substitute welding procedure, cost is greatly reduced, exhaust emission and light pollution caused by removing welding procedure at the same time, are conducive to the improvement of production environment and the career safety ＆ health of employee.

Description

A kind of sealing structure of heat exchanger

Technical field

Heat exchanger technology field is the utility model is related to, more specifically, it relates to a kind of sealing knot of heat exchanger Structure.

Background technology

Burnt gas wall hanging furnace is commonly provided with the related devices such as combustion chamber, heat exchanger, absorbs combustion gas using heat exchanger Caused energy, passes to the cold water that heat exchanger is flowed through by water inlet pipe, and water temperature raises after heat exchange, and hot water is arranged from outlet pipe Go out, realize the function of flow heated water.

The Chinese utility model patent that patent announcement number is CN204373217U discloses a kind of burnt gas wall hanging furnace with secondary Condensed heat exchanger, it is mainly made of heat exchange U-shaped copper pipe group, flue gas flow deflector, flue gas shim and water box, in water box Equipped with water inlet and water outlet, the both ends of each heat exchange U-shaped copper pipe in heat exchange U-shaped copper pipe group are connected with water box, water inlet Mouth is connected with one end of all heat exchange U-shaped copper pipes, and water outlet is connected with the other end of all heat exchange U-shaped copper pipes, cigarette Conductance flow is placed in the both sides of heat exchange U-shaped copper pipe group, and flue gas shim is located at the middle part of heat exchange U-shaped copper pipe group.

Its middle water box is generally made of casting, in the sand core mould design of water box, is offered 6 fabrication holes that shake out, is used Sand material after sand is shaken in discharge, later stage needs are sealed.The general technique using welding is by same material aluminium in the prior art The seal plug block welding of alloy is blocked at the fabrication hole that shakes out, and realizes sealing.But welding procedure is of high cost, exhaust gas can be also caused Pollution and light pollution so that production environment is poor, influences the career safety ＆ health of employee.

Utility model content

For existing technical problem, the utility model provides a kind of sealing structure of heat exchanger, using mechanical system Stainless steel boring cover is vertically squeezed into and is shaked out in fabrication hole, welding procedure is removed, cost is greatly reduced, while remove welding procedure Caused by exhaust emission and light pollution, be conducive to the improvement of production environment and the career safety ＆ health of employee.

To achieve the above object, the utility model provides following technical solution：

A kind of sealing structure of heat exchanger, including heat exchanger body, the heat exchanger body include being used for combustion gas The combustion chamber of burning and the water jacket being set in outside the combustion chamber, it is characterised in that offered out on the water-jacket outer wall Sand hole, is provided with the boring cover for sealing the clearance hole on the water jacket, and the boring cover includes the lid of round pie and coaxial The axis body being fixed on the lid, the axis body are interference fitted with the clearance hole, and use is provided with the clearance hole perisporium In the sealant layer for blocking gap between the axis body and the clearance hole perisporium.

Through the above technical solutions, first smearing fluid sealant on clearance hole perisporium, then boring cover is hung down using mechanical system It is straight to squeeze into clearance hole to realize sealing, cost is greatly reduced, while exhaust emission and light dirt caused by removing welding procedure Dye, is conducive to the improvement of production environment and the career safety ＆ health of employee.Fuel gas burns in a combustion chamber, meanwhile, water jacket In store cold water to be heated, with the burning of gas in combustion chamber, make the temperature of cold water rises in water jacket to realize the friendship of heat Change.

Further, it is evenly arranged with the side wall of the lid connection axis body around its own axis multiple spin-ended convex Block, close to corresponding on the outer wall of the lid, the spin-ended convex block is provided with the water jacket and the spin-ended convex block is engaged by clamping Spin-ended groove.

Through the above technical solutions, after boring cover is connected with clearance hole, on the spin-ended convex block insertion water-jacket outer wall on lid Spin-ended groove in, reduce boring cover around itself axial rotation using the cooperation of spin-ended convex block and spin-ended groove, keep axis body with The close connection of clearance hole inner wall, further strengthens sealing function of the boring cover to clearance hole.

Further, it is provided with sealing ring on the spin-ended convex block outer wall.

Through the above technical solutions, due to the effect of sealing ring, the cooperation of spin-ended convex block and spin-ended groove is closer, strengthens Leakproofness between the two.Meanwhile when boring cover is impacted, sealing ring can be as slow between boring cover and water-jacket outer wall The destruction that punching, reduction boring cover and clearance hole junction are subject to.

Further, the lid connects the first convex block that annular is coaxially separately set on the side wall of the axis body, institute State the first convex block elasticity to set and connect and fix with the lid, the water jacket is close to corresponding to described the on the outer wall of the lid One convex block is provided with the first groove being engaged by clamping with first convex block.

Through the above technical solutions, since the first convex block is elastic, when the first convex block is sticked into the first groove, lid Contact with water-jacket outer wall is closer, can further strengthen boring cover to clearance hole using the cooperation of the first convex block and the second groove Sealing function.

Further, the T-shaped block for being clamped the lid, the lid connection are provided with the first convex block outer wall The T-slot being engaged by clamping with the T-shaped block is offered on the side wall of the axis body.

Through the above technical solutions, since the first convex block and lid connect and fix, matching somebody with somebody for T-shaped block and T-slot is utilized Close, the connection function of the first convex block and lid can be strengthened.

Further, the clearance hole is circumferentially provided with the second groove on the inner wall in aperture along it, and described second is recessed Groove connects the aperture of the clearance hole, and second groove is corresponded on the axis body outer wall and is provided with the second convex block, and described second Convex block is interference fitted with second groove.

Through the above technical solutions, using the interference fit of the second convex block and the second groove, strengthen axis body and clearance hole it Between leakproofness.Second convex block makes axis body stepped, so as to play barrier effect to water.

Further, it is provided between inner wall and second convex block of second groove away from the clearance hole aperture Gasket.

Through the above technical solutions, strengthen the leakproofness between the second convex block and the second groove using gasket；It is meanwhile close Packing also acts as the effect of buffering, reduces abrasion of second convex block to the second groove.

Further, it is coaxially disposed on outer wall of the lid away from the axis body and is useful for strengthening the lid intensity Reinforcement block, the outside diameter of the reinforcement block are more than the internal diameter in the clearance hole aperture.

Through the above technical solutions, after being connected due to boring cover with clearance hole, the outer rim that lid deviates clearance hole aperture is subject to The shearing force of water-jacket outer wall, the bearing capacity of lid outer rim is improved using reinforcement block, extends the service life of boring cover.

Compared with prior art, the beneficial effects of the utility model are：

(1) sealant layer by the interference fit of boring cover axis body and clearance hole and between the two, is realized to clearance hole Sealing, substitute welding procedure, cost be greatly reduced, while exhaust emission and light pollution caused by removing welding procedure, favorably In the improvement of production environment and the career safety ＆ health of employee；

(2) by the cooperation of spin-ended convex block and spin-ended groove, increase water jacket to the active force of boring cover circumferential direction, avoid boring cover because Rotated by external force, so as to ensure the close connection of boring cover and clearance hole, improve leakproofness；

(3) by the cooperation of the first convex block and the first groove and the second convex block and the second groove, boring cover is further enhanced To the sealing function of clearance hole；

(4) since lid is subject to the shear action of water-jacket outer wall at clearance hole, lid intensity is strengthened by reinforcement block, is avoided Failure by shear occurs for lid.

Brief description of the drawings

Fig. 1 is the overall schematic of the utility model embodiment one；

Fig. 2 is the partial sectional view of the utility model embodiment one；

Fig. 3 is the partial sectional view of the utility model embodiment two.

Reference numeral：1st, heat exchanger body；2nd, combustion chamber；3rd, water jacket；31st, water inlet；32nd, water outlet；4th, clearance hole； 5th, boring cover；51st, lid；52nd, axis body；6th, spin-ended groove；7th, spin-ended convex block；8th, sealing ring；9th, the second groove；10th, the second convex block； 11st, the first convex block；12nd, the first groove；13rd, T-shaped block；14th, T-slot；15th, gasket；16th, reinforcement block；17th, sealant layer.

Embodiment

With reference to the accompanying drawings and examples, the utility model is described in detail.

Embodiment one

A kind of sealing structure of heat exchanger, referring to Fig. 1, including heat exchanger body 1, heat exchanger body 1 includes using In being provided with water inlet 31 and water outlet on the combustion chamber 2 of fuel gas buring and the water jacket 3 being set in outside combustion chamber 2, water jacket 3 32, from water inlet 31 toward water jacket 3 in irrigate cold water, the high-temperature gas in combustion chamber 2 is by the cool water heating in water jacket 3, and hot water is again Flowed out through water outlet 32 with for users to use.

Multiple clearance holes 4 for being used to discharge the sand material after sand of shaking are offered on 3 outer wall of water jacket, discharging needs after sand material pair It is sealed, and therefore, the boring cover 5 for being used for sealing clearance hole 4 is set on water jacket 3, due to being for sealing liquid, boring cover 5 are made of stainless steel.The lid 51 of boring cover 5 including round pie and the axis body 52 being coaxially fixed on lid 51, axis body 52 and Clearance hole 4 is interference fitted, and lid 51 is bonded with 3 outer wall of water jacket, and smears fluid sealant as closure axis body on 4 perisporium of clearance hole The sealant layer 17 in gap between 52 and 4 perisporium of clearance hole.In the present embodiment, fluid sealant is using happy Thailand 2701, so that boring cover 5 will Clearance hole 4 is blocked, anti-3 leak of water-baffling sleeve.

In order to further strengthen sealing function of the boring cover 5 to clearance hole 4, as shown in Fig. 2, in clearance hole 4 close to aperture Along its circumferentially disposed second groove 9 on perisporium, the second groove 9 connects the aperture of clearance hole 4, and corresponding second is recessed on 52 outer wall of axis body Groove 9 is provided with the second convex block 10 of annular, and the second convex block 10 and the second groove 9 are interference fitted, in the second convex block 10 away from lid It is fixed with gasket 15 on 51 outer wall, in the present embodiment, gasket 15 uses asbestos-packing gasket.Passed in and out when boring cover 5 extrudes During sand hole 4, gasket 15 blocks the gap between the second convex block 10 and the second groove 9, strengthens between boring cover 5 and clearance hole 4 Leakproofness.

Since primarily radial extruding force works between 4 perisporium of axis body 52 and clearance hole, to prevent because by external force boring cover 5 Rotate, cause the connection between axis body 52 and clearance hole 4 to loosen, connected in lid 51 on the side wall of axis body 52 around it Own axes are uniformly arranged multiple spin-ended convex blocks 7, and spin-ended convex block 7 and lid 51 are integrally formed setting, and water jacket 3 is close to lid 51 Spin-ended convex block 7 is corresponded on outer wall and is provided with the spin-ended groove 6 being engaged by clamping with spin-ended convex block 7.Boring cover 5 is extruded into disengaging so as to work as After sand hole 4, spin-ended convex block 7 is sticked into spin-ended groove 6, and when 5 stress of boring cover will rotate, spin-ended convex block 7 is supported with spin-ended groove 6 Connect, prevent boring cover 5 from rotating, fixation is strengthened so that circumferential to boring cover 5.Sealing ring 8 is arranged on spin-ended 7 outer wall of convex block, In the present embodiment, sealing ring 8 uses silicone rubber O-ring 8, strengthens the leakproofness between spin-ended convex block 7 and spin-ended groove 6, can be with Stop the water leaked out from clearance hole 4.

The position for being located at 4 aperture of clearance hole due to lid 51 is subject to the shearing force of 3 outer wall of water jacket, for the strong of enhancing lid 51 Degree, is coaxially disposed reinforcement block 16 on outer wall of the lid 51 away from axis body 52, and the outside diameter of reinforcement block 16 is more than 4 aperture of clearance hole Internal diameter.

The operation principle of the present embodiment is：

It is first that happy safe glue 2701 is smeared on 4 perisporium of clearance hole of Al-alloy heat exchanger, it is then aligned with spin-ended convex block 7 and stops Rotation groove 6 is simultaneously vertically squeezed into stainless steel boring cover 5 in clearance hole 4 using mechanical system, utilizes 5 axis body 52 of boring cover and clearance hole 4 and the second interference fit between convex block 10 and the second groove 9 realize sealing.After boring cover 5 is connected with clearance hole 4, lid Spin-ended convex block 7 on 51 is inserted into the spin-ended groove 6 on 3 outer wall of water jacket, avoids 5 stress of boring cover from rotating, and keeps axis body 52 With fitting closely for clearance hole 4, anti-3 leak of water-baffling sleeve.

Embodiment two

A kind of sealing structure of heat exchanger, difference lies in as shown in figure 3, lid 51 connects axis body with embodiment one The first convex block 11 of annular is coaxially arranged with 52 side wall, the first convex block 11 and lid 51 are separately set, and the first convex block 11 elasticity are set, and in the present embodiment, the first convex block 11 is made of rubber.It is integrally formed and is provided with 11 outer wall of the first convex block For being clamped the T-shaped block 13 of lid 51, lid 51 connects the T-shaped for offering on the side wall of axis body 52 and being engaged by clamping with T-shaped block 13 Groove 14.Water jacket 3 be provided with close to corresponding first convex block 11 on the outer wall of lid 51 be engaged by clamping with the first convex block 11 it is first recessed Groove 12.

The operation principle of the present embodiment is：

When the first convex block 11 and lid 51 are integrally formed setting, due to the influence of the accuracy of manufacture, the first convex block 11 and lid 51 junction of body is there may be radian, and when boring cover 5 is squeezed into clearance hole 4, the first convex block 11 cannot be tight with the first groove 12 Closely connected conjunction, so as to influence leakproofness.Therefore, the elasticity of the first convex block 11 sets and utilizes T-slot 14 and clamping and the lid of T-shaped block 13 Body 51 connects, so that when the first convex block 11 is sticked into the first groove 12, the first convex block 11 is adjacent to 12 inner wall of the first groove, improves Sealing function of the boring cover 5 to clearance hole 4.

The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims (8)

1. a kind of sealing structure of heat exchanger, including heat exchanger body（1）, the heat exchanger body（1）Including for The combustion chamber of fuel gas buring（2）And it is set in the combustion chamber（2）Exterior water jacket（3）, it is characterised in that the water jacket （3）Clearance hole is offered on outer wall（4）, the water jacket（3）On be provided with for sealing the clearance hole（4）Boring cover（5）, institute State boring cover（5）Lid including round pie（51）Coaxially it is fixed on the lid（51）On axis body（52）, the axis body （52）With the clearance hole（4）Interference fit, the clearance hole（4）It is provided with perisporium for blocking the axis body（52）With institute State clearance hole（4）The sealant layer in gap between perisporium（17）.

2. the sealing structure of heat exchanger according to claim 1, it is characterised in that the lid（51）Connect the axis Body（52）Side wall on around its own axis be evenly arranged with multiple spin-ended convex blocks（7）, the water jacket（3）Close to the lid （51）Outer wall on correspond to the spin-ended convex block（7）It is provided with and the spin-ended convex block（7）The spin-ended groove being engaged by clamping（6）.

3. the sealing structure of heat exchanger according to claim 2, it is characterised in that the spin-ended convex block（7）On outer wall It is provided with sealing ring（8）.

4. the sealing structure of heat exchanger according to claim 1, it is characterised in that the lid（51）Connect the axis Body（52）Side wall on be coaxially separately set annular the first convex block（11）, first convex block（11）Elasticity set and with institute State lid（51）Connect and fix, the water jacket（3）Close to the lid（51）Outer wall on correspond to first convex block（11）If It is equipped with and first convex block（11）The first groove being engaged by clamping（12）.

5. the sealing structure of heat exchanger according to claim 4, it is characterised in that first convex block（11）On outer wall It is provided with for being clamped the lid（51）T-shaped block（13）, the lid（51）Connect the axis body（52）Side wall on open Equipped with the T-shaped block（13）The T-slot of clamping engagement（14）.

6. the sealing structure of the heat exchanger according to claim 2 or 4, it is characterised in that the clearance hole（4）By adjacent pores On the inner wall of mouth the second groove is circumferentially provided with along it（9）, second groove（9）Connect the clearance hole（4）Aperture, institute State axis body（52）Second groove is corresponded on outer wall（9）It is provided with the second convex block（10）, second convex block（10）With it is described Second groove（9）Interference fit.

7. the sealing structure of heat exchanger according to claim 6, it is characterised in that second groove（9）Away from institute State clearance hole（4）The inner wall in aperture and second convex block（10）Between be provided with gasket（15）.

8. the sealing structure of heat exchanger according to claim 7, it is characterised in that the lid（51）Away from the axis Body（52）Outer wall on be coaxially disposed and be useful for strengthening the lid（51）The reinforcement block of intensity（16）, the reinforcement block（16）'s Outside diameter is more than the clearance hole（4）The internal diameter in aperture.