Vertical steam-water dual-purpose boiler

Abstract

The utility model relates to a vertical steam-water dual-purpose boiler which comprises a tank body, a hearth and a smoke exhaust channel, the tank body is provided with a water inlet, a water outlet, a pressure relief exhaust port and a steam outlet, the hearth is located in the tank body, the top of the hearth is open towards the outside of the tank body, the smoke exhaust channel is arranged at the bottom of the tank body, and a smoke heat exchange device is arranged in the smoke exhaust channel. A heat exchange smoke pipe is arranged in the tank body, the upper end of the heat exchange smoke pipe is communicated with the bottom of the hearth, and the lower end of the heat exchange smoke pipe is communicated with the smoke exhaust channel. The heat exchange smoke pipe is additionally arranged to exchange heat with high-temperature smoke, cold water is preheated by low-temperature smoke in the smoke heat exchange device to become hot water, then the hot water enters the tank body, and the high-temperature smoke exchanges heat with water in the tank body through the heat exchange smoke pipe and then is discharged to the smoke heat exchange device. High-temperature water is generated through heat exchange of latent heat and sensible heat in high-temperature flue gas, the working efficiency of the boiler is improved, and meanwhile energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a vertical steam-water dual-purpose boiler. Background Art

[0002] Traditional gas-fired steam-water dual-purpose boilers generally exchange heat with high-temperature flue gas through a flue gas heat exchanger. However, after the heat exchange, the exhaust gas temperature is still very high. It is obvious that the heat exchange efficiency between the flue gas heat exchanger and the flue gas is low, and the combustion thermal efficiency of traditional steam-water dual-purpose boilers is low. Utility Model Content

[0003] The utility model aims to provide a vertical steam-water dual-purpose boiler with high heat exchange efficiency.

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

[0005] A vertical dual-purpose steam-water boiler includes a tank body, a furnace and a smoke exhaust passage. The tank body is provided with a water inlet, a water outlet, a pressure relief exhaust port and a steam outlet. The furnace is located inside the tank body, and the top of the furnace is open to the outside of the tank body. A smoke exhaust passage is provided at the bottom of the tank body, and a smoke heat exchange device is provided in the smoke exhaust passage. A heat exchange smoke pipe is provided in the tank body, and the upper end of the heat exchange smoke pipe is connected to the bottom of the furnace, and the lower end of the heat exchange smoke pipe is connected to the smoke exhaust passage. The utility model exchanges heat with high-temperature flue gas by adding a heat exchange smoke pipe. Cold water is first preheated by low-temperature flue gas in the smoke heat exchange device to become hot water, and then the hot water enters the tank body. The high-temperature flue gas exchanges heat with the water in the tank body through the heat exchange smoke pipe and is then discharged to the smoke heat exchange device. The utility model fully utilizes the latent heat and sensible heat in the high-temperature flue gas to produce high-temperature water, improves the working efficiency of the boiler and saves energy consumption. The vertical dual-purpose steam-water boiler of the utility model is highly efficient and energy-saving, and the tank body has high thermal efficiency.

[0006] The present invention can also be further improved as follows.

[0007] An insulation layer is provided on the side wall of the tank to avoid excessive heat loss in the tank and improve heat exchange efficiency.

[0008] A supporting frame is arranged at the bottom of the tank body.

[0009] A drain port is provided at the bottom of the tank body to discharge dirt in the tank body.

[0010] The heat exchange smoke tube is in a spiral coil shape, and the heat exchange smoke tube in the spiral coil shape has high heat exchange efficiency.

[0011] The inner wall of the tank body is provided with a plurality of water level sensors along the height direction, and the water level sensors are used to detect the water level of the tank body to avoid safety accidents or dry burning.

[0012] The tank body is provided with a water inlet pipe, a water outlet pipe, a steam outlet pipe and a sewage outlet at positions corresponding to the water inlet, the water outlet, the steam outlet and the sewage outlet, respectively, so as to facilitate connection with each other or with external devices and external pipelines.

[0013] A heat exchange support pipe is arranged in the tank, the upper end of which is connected to the bottom of the furnace, and the lower end of which is connected to the exhaust channel. The heat exchange support pipe is mainly used to support the furnace, and of course the high-temperature flue gas will also exchange heat with water through the heat exchange support pipe.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The utility model exchanges heat with high-temperature flue gas by adding a heat exchange smoke pipe. Cold water is first preheated by low-temperature flue gas in the flue gas heat exchange device to become hot water, and then the hot water enters the tank body. The high-temperature flue gas exchanges heat with the water in the tank body through the heat exchange smoke pipe and then is discharged to the flue gas heat exchange device. The utility model fully utilizes the latent heat and sensible heat in the high-temperature flue gas to generate high-temperature water, improves the working efficiency of the boiler and saves energy consumption. The utility model vertical steam-water dual-purpose boiler is highly efficient and energy-saving, and the tank body has high thermal efficiency.

[0016] 2. The utility model vertical steam-water dual-purpose boiler realizes multiple uses of one machine. The same tank body can produce both hot water and low-pressure steam. It is highly flexible and suitable for multiple uses in one place and one furnace for multiple uses.

[0017] 3. The utility model is safe and risk-free to use, and the tank body does not belong to special equipment. When the tank body is used as a water heater, an atmospheric pipe seat is set on the tank body to connect to the atmosphere, and the tank body has no pressure-bearing components, which does not belong to the management scope of special equipment; when the tank body is used as a steam boiler, the control system is set to adjust the outlet steam pressure to less than 0.1MPa. According to safety technical regulations, the tank body does not belong to special equipment and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a vertical steam-water dual-purpose boiler when used as a hot water boiler.

[0019] Figure 2 The utility model is a structural schematic diagram of a vertical steam-water dual-purpose boiler when used as a steam boiler.

[0020] Figure 1 and Figure 2 The arrows in the diagram indicate the flow direction of flue gas, water or steam. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1, as Figure 1 and Figure 2As shown, a vertical steam-water dual-purpose boiler comprises a tank body 1, a furnace 2 and a smoke exhaust channel 6. The tank body 1 is provided with a water inlet 11, a water outlet 13, a pressure relief exhaust port 15 and a steam outlet 12. The furnace 2 is located in the tank body 1, and the top of the furnace 2 is open to the outside of the tank body 1. The bottom of the tank body 1 is provided with a smoke exhaust channel 6, and a smoke heat exchange device 7 is provided in the smoke exhaust channel 6. A heat exchange smoke pipe 3 is provided in the tank body 1, and the upper end of the heat exchange smoke pipe 3 is communicated with the bottom of the furnace 2, and the lower end of the heat exchange smoke pipe 3 is communicated with the smoke exhaust channel 6.

[0023] As a more specific technical solution of the utility model.

[0024] A heat-insulating layer 19 is provided on the side wall of the tank body 1 .

[0025] A support frame 5 is provided at the bottom of the tank body 1 .

[0026] A sewage outlet 14 is provided at the bottom of the tank body 1 .

[0027] The heat exchange smoke tube 3 is in the shape of a spiral coil.

[0028] The inner wall of the tank body 1 is provided with a plurality of water level sensors 18 along the height direction.

[0029] The tank body 1 is provided with a water inlet pipe 111, a water outlet pipe 131, a steam outlet pipe 121 and a sewage outlet 141 at positions corresponding to the water inlet 11, the water outlet 13, the steam outlet 12 and the sewage outlet, so as to facilitate connection with external devices and external pipelines.

[0030] The pressure relief exhaust port 15 is provided with a pressure relief valve.

[0031] The flue gas heat exchange device 7 of the utility model is a prior art, and the flue gas heat exchange device 7 is a heat exchange coil.

[0032] A heat exchange support pipe 8 is provided in the tank body, the upper end of the heat exchange support pipe 8 is communicated with the bottom of the furnace, and the lower end of the heat exchange support pipe 8 is communicated with the smoke exhaust channel.

[0033] One end of the flue gas heat exchange device 7 serves as a water inlet end, and the other end of the flue gas heat exchange device 7 is connected to a water inlet 11 through a pipe 10 .

[0034] The working principle of the utility model is:

[0035] When the utility model is used as a water heater: the burner burns facing the furnace 2, the high-temperature flue gas flows from top to bottom into the heat exchange smoke pipe 3, then flows into the smoke exhaust channel 6, and finally is discharged from the smoke exhaust channel 6. The cold water is first preheated by the low-temperature flue gas through the smoke heat exchange device 7, the temperature of the cold water increases, and then enters the tank body 1 through the water inlet 11. Under the heating of the heat exchange smoke pipe 3, the cold and hot water have different densities, the hot water is on the top, and the cold water is on the bottom. When the hot water floats up to meet the water outlet temperature condition, the hot water is discharged from the tank body 1 from the water outlet 13.

[0036] When the utility model is used as a steam furnace: the water outlet 13 is sealed, the burner burns against the furnace 2, the high-temperature flue gas flows from top to bottom into the heat exchange flue pipe 3, then flows into the exhaust channel 6, and finally is discharged from the exhaust channel 6, the cold water is first preheated by the low-temperature flue gas through the flue gas heat exchange device 7, and then enters the tank body 1 through the water inlet 11, the cold water exchanges heat with the high-temperature flue gas through the heat exchange flue pipe 3, the heat exchange flue pipe 3 heats the cold water to steam under a certain pressure, and the steam is then output from the tank body 1 from the steam outlet 12. The water level detection device detects the water level in the tank body 1, effectively preventing the tank body from dry burning.

Claims

1. A vertical steam-water dual-purpose boiler, Its characteristics are: It includes a tank body, a furnace and a smoke exhaust channel. The tank body is provided with a water inlet, a water outlet, a pressure relief exhaust port and a steam outlet. The furnace is located inside the tank body, and the top of the furnace is open to the outside of the tank body. The bottom of the tank body is provided with a smoke exhaust channel, and the smoke exhaust channel is provided with a smoke heat exchange device. The characteristic is that a heat exchange smoke pipe is provided in the tank body, the upper end of the heat exchange smoke pipe is connected with the bottom of the furnace, and the lower end of the heat exchange smoke pipe is connected with the smoke exhaust channel.

2. According to claim 1, the vertical steam-water dual-purpose boiler, Its characteristics are: A heat-insulating layer is provided on the side wall of the tank body.

3. The vertical steam-water dual-purpose boiler according to claim 1, Its characteristics are: A supporting frame is arranged at the bottom of the tank body.

4. The vertical steam-water dual-purpose boiler according to claim 1, Its characteristics are: A sewage outlet is provided at the bottom of the tank.

5. The vertical steam-water dual-purpose boiler according to claim 1, Its characteristics are: The heat exchange smoke tube is in the shape of a spiral coil.

6. The vertical steam-water dual-purpose boiler according to claim 1, Its characteristics are: A plurality of water level sensors are arranged on the inner wall of the tank body along the height direction.

7. The vertical steam-water dual-purpose boiler according to claim 1, Its characteristics are: A water inlet pipe, a water outlet pipe, a steam outlet pipe and a sewage outlet are respectively arranged at positions corresponding to the water inlet, the water outlet, the steam outlet and the sewage outlet of the tank body.

8. The vertical steam-water dual-purpose boiler according to claim 1, Its characteristics are: A heat exchange support pipe is arranged in the tank body, the upper end of the heat exchange support pipe is communicated with the bottom of the furnace, and the lower end of the heat exchange support pipe is communicated with the smoke exhaust channel.

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