Two-stage closed tower heat exchange coil assembly

Abstract

The utility model discloses a two-stage closed type tower heat exchange coil pipe assembly which comprises a first-stage coil pipe, a series box and a second-stage coil pipe, the first-stage coil pipe and the second-stage coil pipe are symmetrically distributed on the two sides of the series box, top end openings of the first-stage coil pipe and the second-stage coil pipe are fixedly connected to the two sides of the series box, a bottom end opening of the first-stage coil pipe is connected with an inlet collecting pipe, and a bottom end opening of the second-stage coil pipe is connected with an outlet collecting pipe. The side part of the inlet collecting pipe is fixedly connected with an inlet pipe communicated with the inlet collecting pipe, a bottom port of the secondary coil pipe is connected with an outlet collecting pipe, and the side part of the outlet collecting pipe is fixedly connected with an outlet pipe communicated with the outlet collecting pipe; and an automatic exhaust valve is arranged at the upper part of the series box. The two-stage closed type tower heat exchange coil pipe assembly provided by the utility model is divided into two-stage cooling and series operation, is suitable for working conditions of small flow and high temperature difference, not only can ensure the required heat exchange area, but also can ensure the flow velocity in the pipe and turbulent flow operation, and does not need to additionally add a connecting pipeline outside equipment, so that the overall appearance of the equipment is attractive.

Description

Technical Field

[0001] The utility model relates to a two-stage closed tower heat exchange coil assembly, belonging to the technical field of cooling towers. Background Art

[0002] Closed cooling tower, also known as closed cooling tower for short, is a tower that places a tubular heat exchanger inside the tower. It sprays water onto the surface of the heat exchange tube to evaporate and exchange heat to achieve the purpose of cooling. Because it is a closed cycle, it can ensure that the water quality is not polluted, which well protects the efficient operation of the main equipment and increases its service life.

[0003] At present, when dealing with small flow and high temperature difference conditions, it is necessary to add additional connecting pipes outside the equipment to connect the heat exchange coils in two cooling tower equipment in series through the connecting pipes. This will not only make the installation of the connecting pipes inconvenient, but also affect the overall appearance of the equipment.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the deficiencies in the background technology, the utility model provides a two-stage closed tower heat exchange coil assembly, which is divided into two-stage cooling and operates in series. It is suitable for working conditions with small flow and high temperature difference, can ensure the required heat exchange area, and can also ensure the flow rate in the tube and turbulent operation. There is no need to add additional connecting pipes outside the equipment, so that the overall appearance of the equipment is beautiful.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A two-stage closed tower heat exchange coil assembly comprises a primary coil, a series box and a secondary coil, wherein the primary coil and the secondary coil are symmetrically distributed on both sides of the series box, and the top ports of the primary coil and the secondary coil are fixedly connected to both sides of the series box;

[0008] The bottom port of the first-level coil is connected to the inlet manifold, and the side of the inlet manifold is fixedly connected to the inlet pipe connected thereto; the bottom port of the second-level coil is connected to the outlet manifold, and the side of the outlet manifold is fixedly connected to the outlet pipe connected thereto;

[0009] An automatic exhaust valve is arranged on the upper part of the series box.

[0010] Furthermore, the inlet manifold and the outlet manifold are located on the opposite outer sides of the primary coil and the secondary coil.

[0011] Furthermore, the primary coil and the secondary coil are both composed of a plurality of serpentine coils.

[0012] Furthermore, the inlet pipe and the inlet collecting pipe are symmetrically arranged with the outlet pipe and the outlet collecting pipe.

[0013] Furthermore, the series box is the highest point of the heat exchange coil assembly, and the series box is arranged in a horizontal direction.

[0014] Furthermore, the inlet manifold and the outlet manifold are both arranged in the horizontal direction, and the inlet manifold and the outlet manifold are arranged in parallel with the length direction of the series-connected boxes.

[0015] Furthermore, the inlet pipe is arranged perpendicularly to the inlet collecting pipe along the horizontal direction, and the outlet pipe is arranged perpendicularly to the outlet collecting pipe along the horizontal direction.

[0016] Furthermore, the primary coil is installed in a high temperature zone of the closed tower, and the secondary coil is installed in a low temperature zone of the closed tower.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0018] The circulating water is cooled by the primary coil in the high temperature area and then enters the series tank. An automatic exhaust valve is set on the top of the series tank to exhaust the air. The circulating water with the lowered temperature then enters the secondary coil in the low temperature area to cool down.

[0019] The heat exchange coil assembly is divided into two stages of cooling and operates in series. It is suitable for working conditions with small flow and high temperature difference. It can ensure the required heat exchange area, flow velocity in the tube, and turbulent operation.

[0020] The two-stage coils are connected in series in an integrated manner. When using the closed tower equipment, there is no need to connect additional pipes in series outside the equipment. The overall appearance of the equipment is beautiful and easy to install.

[0021] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] In the figure, 1-inlet pipe, 2-inlet manifold, 3-primary coil, 4-series box, 5-secondary coil, 6-outlet manifold, 7-outlet pipe, 8-automatic exhaust valve. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0025] like Figure 1As shown, the utility model provides a two-stage closed tower heat exchange coil assembly, including a primary coil 3, a series box 4 and a secondary coil 5, wherein the primary coil 3 and the secondary coil 5 are symmetrically distributed on both sides of the series box 4.

[0026] The top ports of the primary coil 3 and the secondary coil 5 are fixedly connected to the two sides of the series box 4 .

[0027] The bottom port of the primary coil 3 is connected to the inlet manifold 2, and the side of the inlet manifold 2 is fixedly connected with the inlet pipe 1 which is in communication therewith.

[0028] The bottom port of the secondary coil 5 is connected to an outlet collecting pipe 6 , and an outlet pipe 7 communicating with the outlet collecting pipe 6 is fixedly connected to the side of the outlet collecting pipe 6 .

[0029] The inlet manifold 2 and the outlet manifold 6 are located on the outer sides of the primary coil 3 and the secondary coil 5 facing each other.

[0030] The series box 4 is the highest point of the heat exchange coil assembly. The series box 4 is arranged in a horizontal direction. An automatic exhaust valve 8 is arranged on the upper part of the series box 4 for exhausting gas.

[0031] The primary coil 3 and the secondary coil 5 are both composed of a plurality of serpentine coils.

[0032] The inlet pipe 1 and the inlet collecting pipe 2 are symmetrically arranged with the outlet pipe 7 and the outlet collecting pipe 6.

[0033] The inlet manifold 2 and the outlet manifold 6 are both arranged in the horizontal direction, and the inlet manifold 2 and the outlet manifold 6 are arranged in parallel with the length direction of the series box 4.

[0034] The inlet pipe 1 is arranged vertically with the inlet collecting pipe 2 along the horizontal direction, and the outlet pipe 7 is arranged vertically with the outlet collecting pipe 6 along the horizontal direction.

[0035] The primary coil 3 is installed in the high temperature zone of the closed tower, and the secondary coil 5 is installed in the low temperature zone of the closed tower.

[0036] The specific working principle of this utility model:

[0037] The circulating water enters from the inlet pipe 1 and is evenly distributed to each coil through the inlet manifold 2. The circulating water is cooled through the primary coil 3 in the high temperature zone and enters the series box 4. The series box 4 is the highest point of the equipment. An automatic exhaust valve 8 is arranged on the top of the series box 4 for exhaust. The circulating water with the lowered temperature enters the secondary coil 5 in the low temperature zone and is further cooled. The circulating water then enters the outlet manifold 6 and the low temperature circulating water flows out from the outlet pipe 7.

[0038] The heat exchange coil assembly is divided into two stages of cooling and operates in series. It is suitable for working conditions with small flow and high temperature difference. It can not only ensure the required heat exchange area, but also ensure the flow rate in the tube and ensure turbulent operation.

[0039] The two-stage coils are connected in series in an integrated manner. When using the closed tower equipment, there is no need to connect additional pipes in series outside the equipment. The overall appearance of the equipment is beautiful and easy to install.

[0040] If you want to lower the circulating water temperature or save the coil heat exchange area to reduce costs, you can set fillers above and below the coil to assist in cooling.

[0041] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A two-stage closed tower heat exchange coil assembly, characterized in that: It comprises a primary coil (3), a series connection box (4) and a secondary coil (5), wherein the primary coil (3) and the secondary coil (5) are symmetrically distributed on both sides of the series connection box (4), and top ports of the primary coil (3) and the secondary coil (5) are fixedly connected to both sides of the series connection box (4); The bottom port of the primary coil (3) is connected to the inlet manifold (2), and the side of the inlet manifold (2) is fixedly connected to the inlet pipe (1) in communication with the inlet manifold; the bottom port of the secondary coil (5) is connected to the outlet manifold (6), and the side of the outlet manifold (6) is fixedly connected to the outlet pipe (7) in communication with the outlet manifold; An automatic exhaust valve (8) is provided on the upper part of the series box (4).

2. A two-stage closed tower heat exchange coil assembly as claimed in claim 1, characterized in that: The inlet manifold (2) and the outlet manifold (6) are located on the opposite outer sides of the primary coil (3) and the secondary coil (5).

3. A two-stage closed tower heat exchange coil assembly as claimed in claim 1, characterized in that: The primary coil (3) and the secondary coil (5) are both composed of a plurality of serpentine coils.

4. A two-stage closed tower heat exchange coil assembly as claimed in claim 1, characterized in that: The inlet pipe (1) and the inlet collecting pipe (2) are symmetrically arranged with the outlet pipe (7) and the outlet collecting pipe (6).

5. A two-stage closed tower heat exchange coil assembly as claimed in claim 1, characterized in that: The series box (4) is the highest point of the heat exchange coil assembly, and the series box (4) is arranged in a horizontal direction.

6. A two-stage closed tower heat exchange coil assembly as claimed in claim 5, characterized in that: The inlet manifold (2) and the outlet manifold (6) are both arranged in the horizontal direction, and the inlet manifold (2) and the outlet manifold (6) are arranged in parallel with the length direction of the series box (4).

7. A two-stage closed tower heat exchange coil assembly as claimed in claim 6, characterized in that: The inlet pipe (1) is arranged vertically with the inlet manifold (2) in the horizontal direction, and the outlet pipe (7) is arranged vertically with the outlet manifold (6) in the horizontal direction.

8. A two-stage closed tower heat exchange coil assembly as claimed in claim 1, characterized in that: The primary coil (3) is installed in the high temperature zone of the closed tower, and the secondary coil (5) is installed in the low temperature zone of the closed tower.

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