The coil pipe mounting and sealing structure that is used for solar water container
Technical field
The utility model relates to a kind of hermetically-sealed construction, especially relates to a kind of coil pipe mounting and sealing structure that is used for solar water container.
Background technology
At present, more and more popularized for the utilization of solar energy, the development of solar water heating system is day crescent benefit also.In solar water heating system, solar water container is important water storage part, water tank is interior except electrical heating, often also adopt coil pipe to utilize the heat exchange of medium circulation as water, thereby improve the heat exchange effect of water tank, can exist coil pipe of solar water tank that the technical problem of sealing is installed in the production, often adopt thread seal and snap ring to squeeze the bronze pan tube mode that rises in the prior art and seal (as Fig. 1), the shortcoming of this structure is: part is more; Seal point is more; Screw thread processing request height; Workman's complex operation, unreliable, labour intensity is big; Use back a period of time sealing place that leakage etc. might take place normal.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, coil pipe mounting and sealing structure that is used for solar water container that can guarantee sealing effectiveness.
The problem of the required solution of the utility model realizes by the following technical solutions: it comprises inner water tank cylindrical shell, base and nut, base is welded on the inner water tank cylindrical shell, it is characterized in that: be provided with seal nipple between described coil pipe and the base, seal nipple and coil pipe weld together, be provided with metallic gasket between the butterfly contact-making surface of seal nipple and base, be set with nut on the seal nipple, nut connects by screw threads for fastening with base.
The structure that the utility model adopts, because part is less, seal point is few, the installation requirement precision is not high, and is simple to operate, can reduce working strength of workers; Sealing effectiveness is reliable, does not have the leakage possibility, can improve service life.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Shown in Figure 1 is the utility model prior art constructions schematic diagram
Shown in Figure 2 is structural representation of the present utility model
Among the figure 1, inner water tank cylindrical shell 2, base 3, nut 4, coil pipe 5, seal nipple 6, metallic gasket 7, silver soldering seam
The specific embodiment
By accompanying drawing as can be known, this coil pipe mounting and sealing structure that is used for solar water container comprises inner water tank cylindrical shell 1, base 2 and nut 3, base 2 is welded on the inner water tank cylindrical shell 1, be provided with seal nipple 5 between described coil pipe 4 and the base 2, seal nipple 5 welds together with coil pipe 4, coil pipe is the copper pipe material, can adopt silver soldering soldering welding, 7 are the silver soldering seam among the figure, be provided with metallic gasket 6 between the butterfly contact-making surface of seal nipple 5 and base 2, be set with nut 3 on the seal nipple 5, nut 3 and base 2 connect by screw threads for fastening.Metallic gasket between seal nipple and the base can adopt thin copper sheet, all combines closely by metal extruding assurance sealing gasket and base, seal nipple, does not have any slit, guarantees the face sealing without leakage.Sealing function behind the sealing gasket pressurized is to realize by the nao-and micro relief that fills up the butterfly sealing surface after the encapsulant surrender.