Steam generator

Abstract

The utility model relates to the technical field of combustors, in particular to a steam generator. The device comprises a combustion mechanism, an output port of the combustion mechanism communicates with a combustion chamber, the combustion chamber is fixedly connected with a heat energy converter used for converting heat and communicates with a smoke exhaust pipe, and a waste heat recovery assembly used for recovering heat is arranged on the smoke exhaust pipe; the combustion mechanism comprises a barrel pipe with the lower end extending into the combustion chamber, a combustion fan fixedly connected to the upper end of the barrel pipe, a gas pipe extending into the barrel pipe, an igniter fixedly connected to the barrel pipe and a combustion disc arranged on the downstream portion of the gas pipe, and a flame stabilizer is fixedly connected to a pipe opening of the gas pipe. The device can improve the utilization rate of fuel gas, so that the fuel gas is fully combusted, and the heat efficiency is improved; parts in the combustion mechanism are convenient to replace or maintain, and the combustion chamber is convenient to clean; according to the device, the exhaust path of flue gas and the length of the waste heat recovery pipe are prolonged, heat exchange can be fully carried out conveniently, and the waste heat recovery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a steam generator. Background Art

[0002] A burner is a thermal energy device that feeds fuel and air into a furnace at the required concentration, speed, turbulence, and mixing method, and enables the fuel to stably ignite and burn in the furnace.

[0003] The flame temperature of an ordinary combustion tray is 800 - 900 degrees; the temperature of an infrared combustion tray is 1000 - 1150 degrees, and the flame temperature of an ordinary burner is 900 - 1100 degrees. The existing combustion system does not burn the gas sufficiently. The insufficient combustion of the gas fails to achieve the ideal combustion effect, and the excessively high exhaust gas temperature causes heat loss, resulting in waste of energy. At the same time, due to the insufficient combustion of the fuel, pollution emissions will be generated. Content of the Utility Model

[0004] In order to solve the problems of the above-mentioned existing technologies, the utility model provides a steam generator, which can improve the utilization rate of gas, enable the gas to burn sufficiently, and improve the thermal efficiency.

[0005] To achieve the above object, the utility model provides the following technical solution: A steam generator includes a combustion mechanism. The output port of the combustion mechanism is communicated with a combustion chamber. The combustion chamber is fixedly connected with a heat energy converter for converting heat. The combustion chamber is communicated with an exhaust pipe. A waste heat recovery component for recovering heat is arranged on the exhaust pipe. The combustion mechanism includes a barrel tube whose lower end extends into the combustion chamber, a combustion-supporting fan fixedly connected to the upper end of the barrel tube, a gas pipe extending into the barrel tube, an igniter fixedly connected to the barrel tube, a combustion tray arranged downstream of the gas pipe, and a flame stabilizer fixedly connected to the pipe orifice of the gas pipe.

[0006] With the above structural design, after the gas is ignited, the flame is sprayed onto the combustion tray, and the combustion tray quickly heats up. There is some unburned gas in the flame, which is forced to consume under the high temperature of the combustion tray when it encounters resistance after passing through the combustion tray, enabling the gas to burn sufficiently and improving the thermal efficiency.

[0007] Preferably, the barrel tube is detachably connected to the combustion chamber. A locking sleeve is fixedly connected to the outer side wall of the barrel tube. A locking ring is fixedly connected to the inlet of the combustion chamber. Bolts are passed through the locking ring, and mounting holes matching the bolts are formed in the locking sleeve.

[0008] With the above structural design, it is convenient to disassemble the combustion mechanism to replace or repair the parts inside the combustion mechanism and to clean the combustion chamber.

[0009] Preferably, the waste heat recovery component includes a waste heat recovery pipe disposed inside the exhaust pipe, a water pump connected to the input end of the waste heat recovery pipe, and a heat preservation box connected to the output end of the waste heat recovery pipe. The outside of the exhaust pipe is wrapped with a heat preservation layer, and a temperature sensor is fixedly connected to the pipe wall near the output end of the waste heat recovery pipe. The temperature sensor is electrically connected to the control switch of the water pump.

[0010] With the above structural design, it is convenient to recover the heat in the flue gas and reduce the temperature of the flue gas.

[0011] Preferably, the waste heat recovery pipe is spiral.

[0012] With the above structural design, the length of the waste heat recovery pipe in the exhaust pipe is increased, and the waste heat recovery efficiency is improved.

[0013] Preferably, a plurality of oppositely arranged inner partitions are fixedly connected along the length direction of the exhaust pipe, and the inner partitions are arranged up and down in a staggered manner; the waste heat recovery pipe includes a first water pipe buried in the inner partition and a second water pipe for connecting the first water pipes. The first water pipes on the same side are sequentially connected from bottom to top through the second water pipe.

[0014] With the above structural design, the inner partition can block the flue gas, reduce the discharge speed of the flue gas, increase the residence time of the flue gas, extend the path length of the flue gas and the waste heat recovery pipe, and facilitate full heat exchange.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1) This device can improve the utilization rate of gas, make the gas burn fully, and improve the thermal efficiency.

[0017] 2) This device is convenient for replacing or repairing the parts in the combustion mechanism and cleaning the combustion chamber.

[0018] 3) This device extends the discharge path of the flue gas and the length of the waste heat recovery pipe, facilitates full heat exchange, and improves the waste heat recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the combustion mechanism of the present utility model;

[0021] Figure 3 is a schematic structural diagram of the inner partition of the present utility model;

[0022] Figure 4 is a schematic structural diagram of the first water pipe and the second water pipe of the present utility model; DETAILED DESCRIPTION OF THE INVENTION

[0023] Embodiment 1:

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 ,the present utility model provides a technical solution: a steam generator, including a combustion mechanism 1, the output port of the combustion mechanism 1 is connected to a combustion chamber 2, the combustion chamber 2 is fixedly connected to a heat energy converter 9 for converting heat, the combustion chamber 2 is connected to an exhaust pipe 3, and a waste heat recovery component for recovering heat is arranged on the exhaust pipe 3; the combustion mechanism 1 includes a barrel 11 with the lower end extending into the combustion chamber 2, a combustion air blower 12 fixedly connected to the upper end of the barrel 11, a gas pipe 13 extending into the interior of the barrel 11, an igniter 14 fixedly connected to the barrel 11, and a combustion tray 15 arranged downstream of the gas pipe 13. The lower end of the barrel 11 is conical with the large mouth facing outwards, facilitating the expansion of the flame. The combustion tray 15 is made of silicon carbide material and is fixedly connected to the inner side wall of the barrel 11. A flame stabilizer 16 is fixedly connected to the pipe orifice of the gas pipe 13. After the gas is ignited, the flame is sprayed onto the combustion tray, and the combustion tray quickly heats up. There is unburned gas in the flame, which is forced to consume under high temperature after encountering resistance when passing through the combustion tray, enabling the gas to burn fully and improving the thermal efficiency.

[0025] In this embodiment, the heat energy converter 9 is a boiler. After the gas burns fully in the combustion chamber, a large amount of heat is released, heating the water in the boiler into saturated steam. The steam accumulates continuously in the boiler, forming high pressure and discharging through a safety valve. At the same time, the water continues to be heated and circulated to maintain the continuous steam production of the boiler.

[0026] The barrel 11 is detachably connected to the combustion chamber 2. A locking sleeve 19 is fixedly connected to the outer side wall of the barrel 11, a locking ring 18 is fixedly connected to the inlet of the combustion chamber 2, a bolt 17 is passed through the locking ring 18, and an installation hole matching the bolt 17 is opened on the locking sleeve 19.

[0027] The waste heat recovery component includes a waste heat recovery pipe 31 arranged inside the exhaust pipe 3, a water pump 32 connected to the input end of the waste heat recovery pipe 31 in communication, and a heat preservation box 33 connected to the output end of the waste heat recovery pipe 31 in communication. The outside of the exhaust pipe 3 is wrapped by a heat preservation layer 39; the water in the heat preservation barrel 33 can be used as the supply source of the heat energy converter 9. The output end of the heat preservation barrel 33 is connected to the input end of the heat energy converter 9 to improve the heating speed of the boiler.

[0028] A temperature sensor 34 is fixedly connected to the pipe wall near the output end of the waste heat recovery pipe 31, and the temperature sensor 34 is electrically connected to the control switch of the water pump 32; alternatively, the power supply of the water pump 32 is connected to a thermostat, and the temperature sensing probe of the thermostat is fixedly connected to the pipe wall near the output end of the waste heat recovery pipe 31, which can also achieve the same effect.

[0029] The input end of the water pump 32 is connected to a water source. When the temperature at the output end of the waste heat recovery pipe 31 reaches the set temperature, the water pump 32 starts, hot water enters the heat preservation box 33, and cold water enters the waste heat recovery pipe 31, and the cycle proceeds.

[0030] The waste heat recovery pipe 31 is spiral.

[0031] When the device is in use, after the gas is ignited in the barrel pipe 11, the flame is sprayed onto the combustion tray 15, and the combustion tray 15 quickly heats up. Some unburned or incompletely burned gas in the flame is forced to be consumed under high temperature after encountering resistance when passing through the combustion tray 15, so that the gas is fully burned in the combustion chamber 2, improving the thermal efficiency. The heat generated by the gas combustion is converted and utilized through the heat energy converter 9; the flue gas generated in the combustion chamber 2 is discharged through the exhaust pipe 3, and the flue gas exchanges heat with the waste heat recovery pipe 31 in the exhaust pipe. The input end of the water pump 32 is connected to a water source. When the temperature at the output end of the waste heat recovery pipe 31 reaches the set temperature, the water pump 32 starts, hot water enters the heat preservation box 33, and cold water enters the waste heat recovery pipe 31, and the cycle proceeds.

[0032] Embodiment 2:

[0033] As Figure 3 shown, Embodiment 2 is different from Embodiment 1. A plurality of relatively arranged inner partitions 51 are fixedly connected along the length direction of the exhaust pipe 3, and the inner partitions 51 are arranged up and down in a staggered manner; the waste heat recovery pipe 31 includes a first water pipe 52 buried on the inner partition 51 and a second water pipe 53 for connecting the first water pipes 52. The first water pipes 52 on the same side are sequentially connected from bottom to top through the second water pipes 53. Other parts are in accordance with Embodiment 1.

[0034] Working principle: After the gas is ignited in the barrel tube 11, the flame sprays onto the combustion disc 15, and the combustion disc 15 quickly heats up. The unburned part of the gas in the flame is forced to consume under high temperature after being blocked when passing through the combustion disc 15, so that the gas is fully burned in the combustion chamber 2, improving the thermal efficiency. The heat generated by the gas combustion is converted and utilized through the heat energy converter 9; the flue gas generated in the combustion chamber 2 is discharged through the exhaust pipe 3. The inner partition 51 can block the flue gas, reduce the discharge speed of the flue gas, increase the residence time of the flue gas, extend the flue gas path length, and facilitate full heat exchange. The flue gas exchanges heat with the first water pipe 52 and the second water pipe 53 in the inner partition 51. The input end of the water pump 32 is connected to the water source. When the temperature at the output end of the waste heat recovery pipe 31 reaches the set temperature, the water pump 32 starts, hot water enters the heat preservation box 33, and cold water enters the waste heat recovery pipe 31, and the cycle proceeds.

[0035] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope for the implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present utility model.

[0036] The above has described the present utility model with reference to the preferred embodiments, but the protection scope of the present utility model is not limited thereto. All technical solutions falling within the scope of the claims are within the protection scope of the present utility model. Without departing from the scope of the present utility model, various improvements can be made to it and components therein can be replaced with equivalents. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A steam generator, comprising a combustion mechanism (1), characterized in that: The outlet of the combustion mechanism (1) is communicated with the combustion chamber (2). The combustion chamber (2) is fixedly connected to a heat energy converter (9) for converting heat. The combustion chamber (2) is communicated with an exhaust pipe (3). A waste heat recovery assembly for recovering heat is arranged on the exhaust pipe (3). The combustion mechanism (1) includes a barrel (11) with its lower end extending into the combustion chamber (2), a combustion-supporting fan (12) fixedly connected to the upper end of the barrel (11), a gas pipe (13) extending into the interior of the barrel (11), an igniter (14) fixedly connected to the barrel (11), and a combustion tray (15) arranged downstream of the gas pipe (13). A flame stabilizer (16) is fixedly connected to the pipe orifice of the gas pipe (13).

2. The steam generator according to claim 1, wherein: The barrel (11) is detachably connected to the combustion chamber (2). A locking sleeve (19) is fixedly connected to the outer side wall of the barrel (11). A locking ring (18) is fixedly connected to the inlet of the combustion chamber (2). A bolt (17) is inserted through the locking ring (18). Mounting holes for matching the bolt (17) are formed in the locking sleeve (19).

3. A steam generator according to claim 1, wherein: The waste heat recovery assembly includes a waste heat recovery pipe (31) arranged inside the exhaust pipe (3), a water pump (32) communicated with the input end of the waste heat recovery pipe (31), and a heat preservation box (33) communicated with the output end of the waste heat recovery pipe (31). The outside of the exhaust pipe (3) is wrapped by a heat preservation layer (39). A temperature sensor (34) is fixedly connected to the pipe wall near the output end of the waste heat recovery pipe (31). The temperature sensor (34) is electrically connected to the control switch of the water pump (32).

4. A steam generator according to claim 3, characterized in that: The waste heat recovery pipe (31) is spiral-shaped.

5. A steam generator according to claim 3, characterized in that: A number of oppositely arranged inner partitions (51) are fixedly connected along the length direction of the exhaust pipe (3). The inner partitions (51) are arranged in a staggered manner up and down. The waste heat recovery pipe (31) includes a first water pipe (52) buried in the inner partition (51) and a second water pipe (53) for communicating the first water pipes (52). The first water pipes (52) on the same side are sequentially communicated from bottom to top through the second water pipe (53).

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