Water inlet and outlet pipeline assembly of heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, in particular to a water inlet and outlet pipeline assembly of a heat exchanger, which comprises a shell with a smoke channel, and a heat exchange pipeline and a water inlet and outlet pipeline assembly which are arranged on the shell, the heat exchange pipeline is transversely arranged in the smoke channel in a penetrating manner, and the water inlet and outlet pipeline assembly is arranged outside the shell. The water inlet pipeline is communicated with the water inlet end of the heat exchange pipeline, the water outlet pipeline is communicated with the water outlet end of the heat exchange pipeline, and protective nickel layers cover the inner pipe walls and the outer pipe walls of the water inlet pipeline and the water outlet pipeline in an electroplating mode. The heat exchanger is simple in structure, reasonable in design and low in cost, protective nickel layers are formed on the inner pipe walls and the outer pipe walls of the water inlet pipeline and the water outlet pipeline in a nickel electroplating mode so as to effectively prevent scale from being deposited and attached to the pipe walls, and therefore the heat exchange efficiency of the water inlet pipeline and the water outlet pipeline is guaranteed. And the problems of fluid resistance increase and water pressure rise after pipeline scaling are prevented.

Description

Technical field:

[0001] The utility model belongs to the technical field of heat exchangers, in particular to an inlet and outlet water pipeline component of a heat exchanger. Background technology:

[0002] The wall-mounted boiler uses gas as fuel, generates high-temperature flue gas through combustion heating, and the internal circulation cold water flowing through the heat exchanger exchanges heat with the high-temperature flue gas, thereby forming internal circulation hot water that can exchange heat with the external circulation cold water. However, in actual use, since the minerals in tap water cannot be filtered, the internal circulation water pipe composed of copper pipes is prone to scale in the long-term use with the heat exchanger, which may affect the heat exchange efficiency. Summary of the invention:

[0003] The utility model aims to provide an inlet and outlet water pipe assembly of a heat exchanger, which forms a protective nickel layer on the inner and outer pipe walls of the inlet and outlet pipes by means of nickel electroplating, so as to effectively prevent the precipitation of scale from adhering to the pipe walls.

[0004] The utility model is achieved in this way:

[0005] A water inlet and outlet pipe assembly of a heat exchanger comprises a shell having a smoke passage, and a heat exchange pipe and the water inlet and outlet pipe assembly arranged on the shell, wherein the heat exchange pipe is transversely passed through the smoke passage, and the water inlet and outlet pipe assembly is arranged outside the shell, and comprises a water inlet pipe connected to the water inlet end of the heat exchange pipe, and a water outlet pipe connected to the water outlet end of the heat exchange pipe, and the inner pipe wall and the outer pipe wall of the water inlet pipe and the water outlet pipe are both electroplated and covered with a protective nickel layer.

[0006] In the above-mentioned water inlet and outlet pipe assembly of the heat exchanger, the water inlet end of the water outlet pipe is spirally wound around the outer circumference of the shell and is surrounded by more than one circle.

[0007] In the above-mentioned water inlet and outlet pipe assembly of a heat exchanger, the water inlet pipe surrounding the outer circumference of the shell is in contact with the outer wall surface of the shell.

[0008] In the above-mentioned water inlet and outlet pipe assembly of a heat exchanger, the water inlet pipe and the water outlet pipe are both formed by a plurality of pipes connected in series end to end.

[0009] In the above-mentioned inlet and outlet water pipe assembly of a heat exchanger, a bypass pipe is arranged between the inlet pipe and the outlet pipe, one end of the bypass pipe is connected to the inlet pipe, and the other end is connected to the outlet pipe, and the diameter of the bypass pipe is smaller than the diameters of the inlet pipe and the outlet pipe.

[0010] The outstanding advantages of the utility model compared with the prior art are:

[0011] The utility model has a simple structure, reasonable design and low cost. A protective nickel layer is formed on the inner and outer pipe walls of the water inlet pipe and the water outlet pipe by electroplating nickel to effectively prevent scale from precipitating and adhering to the pipe wall, thereby ensuring the heat exchange efficiency of the water inlet pipe and the water outlet pipe, and preventing the problems of increased fluid resistance and increased water pressure after scaling of the pipeline. Description of the drawings:

[0012] Figure 1 It is an overall stereogram of the utility model.

[0013] In the figure: 1. Shell; 2. Water inlet pipe; 3. Water outlet pipe; 4. Bypass pipe. Specific implementation method:

[0014] The present invention is further described below with reference to specific embodiments. Figure 1 :

[0015] A water inlet and outlet pipe assembly of a heat exchanger comprises a shell 1 having a flue gas passage, and a heat exchange pipe and an inlet and outlet water pipe 3 assembly arranged on the shell 1, wherein the heat exchange pipe is transversely arranged in the flue gas passage, and the inlet and outlet water pipe 3 assembly is arranged outside the shell 1, and comprises an inlet pipe 2 connected to the water inlet end of the heat exchange pipe, and an outlet pipe 3 connected to the water outlet end of the heat exchange pipe, and the inner pipe wall and the outer pipe wall of the inlet pipe 2 and the outlet pipe 3 are both electroplated with a protective nickel layer.

[0016] The utility model has a simple structure, reasonable design and low cost. A protective nickel layer is formed on the inner and outer pipe walls of the water inlet pipe 2 and the water outlet pipe 3 by electroplating nickel, so as to effectively prevent the precipitation of scale from adhering to the pipe wall, thereby ensuring the heat exchange efficiency between the water inlet pipe 2 and the water outlet pipe 3, and preventing the problems of increased fluid resistance and increased water pressure after scaling of the pipeline.

[0017] Furthermore, in order to enable the outlet pipe 3 to further absorb heat from the heat exchanger, the water inlet end of the outlet pipe 3 is spirally wound around the outer circumference of the housing 1 for more than one turn. In this embodiment, the outlet pipe 3 is spirally wound twice.

[0018] Furthermore, in order to further improve the heat exchange efficiency between the water outlet pipe 3 and the heat exchanger, the water inlet pipe 2 surrounding the outer periphery of the shell 1 is in contact with the outer wall surface of the shell 1 .

[0019] In order to facilitate the cleaning, maintenance and even replacement of the water inlet pipe 2 and the water outlet pipe 3 in the future, the water inlet pipe 2 and the water outlet pipe 3 are both formed by connecting a plurality of pipes in series end to end.

[0020] At the same time, in order to preheat the cold water in the water inlet pipe 2, a bypass pipe 4 is arranged between the water inlet pipe 2 and the water outlet pipe 3, one end of the bypass pipe 4 is connected to the water inlet pipe 2, and the other end is connected to the water outlet pipe 3, and the diameter of the bypass pipe 4 is smaller than the diameters of the water inlet pipe 2 and the water outlet pipe 3.

[0021] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An inlet and outlet water pipe assembly of a heat exchanger, comprising a shell (1) having a smoke passage, and a heat exchange pipe and an inlet and outlet water pipe (3) assembly arranged on the shell (1), wherein the heat exchange pipe is transversely arranged in the smoke passage, and characterized in that: The inlet and outlet water pipe (3) assembly is arranged outside the shell (1), and comprises an inlet water pipe (2) connected to the water inlet end of the heat exchange pipe, and an outlet water pipe (3) connected to the water outlet end of the heat exchange pipe, and the inner pipe wall and the outer pipe wall of the inlet water pipe (2) and the outlet water pipe (3) are both electroplated with a protective nickel layer.

2. The water inlet and outlet pipe assembly of a heat exchanger according to claim 1, characterized in that: The water inlet end of the water outlet pipe (3) is spirally wound around the outer circumference of the shell (1) and is wound around more than one circle.

3. The water inlet and outlet pipe assembly of a heat exchanger according to claim 2, characterized in that: The water inlet pipe (2) surrounding the outer periphery of the shell (1) is in contact with the outer wall surface of the shell (1).

4. The water inlet and outlet pipe assembly of a heat exchanger according to claim 1, characterized in that: The water inlet pipe (2) and the water outlet pipe (3) are both formed by a plurality of pipes connected end to end in series.

5. The water inlet and outlet pipe assembly of a heat exchanger according to claim 1, characterized in that: A bypass pipe (4) is provided between the water inlet pipe (2) and the water outlet pipe (3); one end of the bypass pipe (4) is connected to the water inlet pipe (2) and the other end is connected to the water outlet pipe (3); and the diameter of the bypass pipe (4) is smaller than the diameters of the water inlet pipe (2) and the water outlet pipe (3).

Images