Condensate water draining device of gas-fired boiler

Abstract

The utility model relates to a gas-fired boiler condensate water drainage device which comprises a hearth and water cooling walls, the water cooling walls are arranged on the periphery of the hearth, a water drainage device is installed at the bottom of the hearth, and the bottom of the water drainage device is communicated with a water drainage pipeline. Condensate water generated on the heating surface of the hearth can be quickly discharged, corrosion is reduced, the heat efficiency of the gas-fired boiler is improved, meanwhile, the drainage area can be increased, the material consumption of the pipeline is reduced, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of gas boilers, and more specifically, to a condensate drain device for a gas boiler. Background Art

[0002] In the SZS modular gas boiler, when the boiler is running at low load, a large amount of condensate is generated in the furnace area due to the low flue gas temperature. In the past, the condensate was dried by the high-temperature flue gas generated during the normal operation of the boiler, which would cause a large amount of heat loss, reduce the thermal efficiency of the boiler, and waste energy. The long-term presence of condensate in the boiler will cause corrosion of the pipes and steel plates, reduce the service life of the boiler, and bring risks to the safe operation of the boiler. The pitch of the furnace heating surface pipes is limited by the production process, the width of the flat steel is small, and the drain pipe is not convenient to be directly welded to the membrane wall. Utility Model Content

[0003] In order to solve the problems of the above-mentioned prior art, the utility model provides a condensate drain device for a gas boiler, which uses a drain device to connect the water-cooled wall and the drain pipe. There is no need to directly install the drain pipe on the flat steel, which overcomes the disadvantage that the drain pipe is difficult to install on the flat steel in the past. The utility model can effectively collect and discharge condensate, reduce corrosion, and improve the thermal efficiency of the boiler.

[0004] According to one aspect of the utility model, a gas boiler condensate drain device is provided, comprising a furnace and water-cooled walls, wherein the water-cooled walls are arranged around the furnace, a drain device is installed at the bottom of the furnace, and the bottom of the drain device is connected to a drain pipe.

[0005] Through this solution, condensed water on the heating surface of the furnace directly enters the drain device, and then is discharged through the drain pipe at the bottom of the drain device. There is no need to connect the drain pipe directly to the water-cooled wall, which solves the problem that the drain pipe is difficult to install and has poor sealing due to the small width of the flat steel. It reduces the corrosion of the furnace by condensed water, increases the service life of the heating surface, and ensures the safe operation of the boiler.

[0006] Preferably, the top of the water drain device is fixedly connected to the flat steel of the water-cooled wall, and a hole for facilitating water drain is provided at the connection between the water drain device and the flat steel.

[0007] Through this solution, the drain device is welded on the flat steel, which improves the sealing between the drain pipe and the furnace, is conducive to the removal of condensed water in the furnace, reduces corrosion, and improves the thermal efficiency of the boiler.

[0008] Preferably, the width of the top of the vertical cross-section of the drainage device is smaller than the width of the bottom thereof.

[0009] Through this solution, the drainage area can be effectively increased, and the condensed water in the furnace water-cooled wall can be discharged in a relatively short time, thereby effectively solving the corrosion of the membrane wall caused by the low-load operation of the gas boiler.

[0010] Preferably, a water trap is provided at the tail end of the drainage pipe.

[0011] Through this solution, the setting of the water trap can effectively prevent smoke leakage.

[0012] Preferably, a plurality of drain devices are installed at the bottom of the furnace.

[0013] Through this solution, there are multiple drainage devices, which can quickly collect condensed water in the furnace, accelerate the collection and discharge speed of condensed water, reduce corrosion, and ensure the safe operation of the gas boiler.

[0014] Preferably, the drainage pipeline includes pipeline 1 and pipeline 2, the bottom of each drainage device is connected to pipeline 1, and multiple pipelines 1 are connected to pipeline 2.

[0015] Through this solution, multiple pipes 1 are connected to one pipe 2, and the condensed water entering pipe 1 can be gathered in pipe 2, which can not only quickly discharge the condensed water in the furnace, but also effectively reduce the amount of pipe materials used and save material costs.

[0016] Preferably, the trap pipe is of V-shaped structure.

[0017] Through this solution, the bending height of the water trap elbow can be designed according to the flue gas pressure in the furnace, which can effectively prevent the flue gas in the furnace from leaking.

[0018] The technical effect of the utility model is that the condensate drain device of the gas boiler can not only quickly discharge the condensate generated by the heating surface of the furnace, reduce corrosion, and improve the thermal efficiency of the gas boiler, but also increase the drainage area and reduce the material consumption of the pipeline, and is highly practical.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0021] Figure 1 It is a structural schematic diagram of the gas boiler condensate drain device in this embodiment.

[0022] Figure 2Schematic diagram of the structure of the water discharge device in this embodiment.

[0023] Figure 3 It is a vertical cross-sectional view of the water discharge device in this embodiment.

[0024] Figure 4 It is a schematic diagram of the structure of the drainage pipe in this embodiment.

[0025] In the drawings, the same components are denoted by the same reference numerals; the drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0028] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0029] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0030] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] Example

[0032] like Figures 1 to 4 As shown, the gas boiler condensate drainage device in this embodiment includes a furnace 1 and a water-cooled wall 2, the water-cooled wall 2 includes a steel pipe 8 and a flat steel 5, the flat steel 5 is fixedly installed between two adjacent steel pipes 8, the water-cooled wall 2 is arranged around the furnace 1, and a drainage device 3 is installed at the bottom of the furnace 1, and the bottom of the drainage device 3 is connected to the drainage pipe 4.

[0033] The condensed water on the heating surface of the furnace directly enters the drain device 3, and then is discharged through the drain pipe 4 at the bottom of the drain device 3. In this way, there is no need to directly connect the drain pipe 4 to the water-cooled wall 2, which solves the problem that the drain pipe 4 is difficult to install and has poor sealing due to the small width of the flat steel 5. It reduces the corrosion of the furnace 1 by the condensed water, increases the service life of the heating surface, and ensures the safe operation of the boiler.

[0034] Furthermore, the top of the drainage device 3 is fixedly connected to the flat steel 5 of the water-cooled wall 2, and a hole 6 for draining water is provided at the connection between the drainage device 3 and the flat steel 5. The opening length of the hole 6 is adjusted according to the amount of water drained to ensure that the condensed water is discharged from the furnace within a reasonable time and to reduce corrosion to the water-cooled wall. By increasing the length of the hole 6, it is also possible to reduce the situation where impurities in the boiler clog the hole 6 and prevent the condensed water from being discharged.

[0035] The drain device 3 is welded on the flat steel 5, which improves the sealing between the drain pipe 4 and the furnace 1, is beneficial to the removal of condensed water in the furnace 1, reduces corrosion, and improves the thermal efficiency of the boiler.

[0036] Furthermore, the width of the top of the vertical cross-section of the drainage device 3 is smaller than the width of the bottom thereof, which can effectively increase the drainage area, discharge the condensed water in the water-cooled wall 2 of the furnace 1 in a shorter time, and effectively solve the corrosion of the membrane wall caused during the low-load operation of the gas boiler.

[0037] Furthermore, a water trap 7 is provided at the tail of the drainage pipe 4 .

[0038] The arrangement of the water trap 7 can effectively prevent smoke leakage.

[0039] Furthermore, a plurality of drain devices 3 are installed at the bottom of the furnace 1 .

[0040] There are multiple drain devices 3, which can quickly collect condensed water in the furnace 1, accelerate the collection and discharge speed of condensed water, reduce corrosion, and ensure the safe operation of the gas boiler.

[0041] Furthermore, the drainage pipe 4 includes a pipe 1 41 and a pipe 2 42 , the bottom of each drainage device 3 is connected to the pipe 1 41 , and a plurality of pipes 1 41 are connected to the pipe 2 42 .

[0042] Multiple pipes 1 41 are connected to one pipe 2 42 , and the condensed water entering the pipe 1 41 can be gathered in the pipe 2 42 , which can not only quickly discharge the condensed water in the furnace 1 , but also effectively reduce the amount of pipe materials used and save material costs.

[0043] Furthermore, the water trap 7 is of a V-shaped structure, and the bending height of the water trap 7 can be designed according to the flue gas pressure of the furnace 1, which can effectively prevent the flue gas in the furnace 1 from leaking.

[0044] The working principle of this embodiment is as follows:

[0045] Since the drainage device 3 is installed close to the lowest point of the furnace 1, the condensed water in the furnace 1 can quickly flow into the drainage device 3 through the holes 6 on the flat steel 5, and then the condensed water in the drainage device 3 flows into the pipe 2 42 along the pipe 1 41, and finally the condensed water in multiple pipes 1 41 is uniformly collected in the pipe 2 42 for discharge.

[0046] The technical effect of the embodiment of the utility model is that the condensate drain device of the gas boiler can not only quickly discharge the condensate generated by the heating surface of the furnace, reduce corrosion, and improve the thermal efficiency of the gas boiler, but also increase the drainage area and reduce the material consumption of the pipeline, and is highly practical.

[0047] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A gas boiler condensate drain device, comprising a furnace (1) and a water-cooled wall (2), wherein the water-cooled wall (2) is arranged around the furnace (1), characterized in that: A drainage device (3) is installed at the bottom of the furnace (1); the bottom of the drainage device (3) is connected to a drainage pipe (4); the top of the drainage device (3) is fixedly connected to the flat steel (5) of the water-cooled wall (2); a hole (6) for facilitating drainage is provided at the connection between the drainage device (3) and the flat steel (5); the width of the top of the vertical section of the drainage device (3) is smaller than the width of its bottom.

2. The gas boiler condensate drain device according to claim 1, characterized in that: A water trap (7) is provided at the tail of the drainage pipe (4).

3. The gas boiler condensate drain device according to claim 1, characterized in that: A plurality of water drain devices (3) are installed at the bottom of the furnace (1).

4. The gas boiler condensate drain device according to claim 3, characterized in that: The drainage pipe (4) comprises a pipe one (41) and a pipe two (42); the bottom of each drainage device (3) is connected to the pipe one (41); and a plurality of pipes one (41) are connected to the pipe two (42).

5. The gas boiler condensate drain device according to claim 2, characterized in that: The water trap (7) is of V-shaped structure.

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