CN210861720U

CN210861720U - Novel low-nitrogen energy-saving water heating unit system

Info

Publication number: CN210861720U
Application number: CN201920651862.9U
Authority: CN
Inventors: 徐慧; 张又红; 何华明; 席向东; 王改; 刘小六; 沈玉华
Original assignee: Zhejiang Junhua Shiye New Energy Equipment Co ltd
Current assignee: Zhejiang Junhua Shiye New Energy Equipment Co ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-06-26
Anticipated expiration: 2029-05-08

Abstract

The utility model belongs to the technical field of the boiler and specifically relates to a novel low nitrogen energy-conserving hot water unit system, including coupling assembling, boiler subassembly, water tank set spare, coupling assembling is including the fan that is used for injecting into the air that connects gradually, the blender that is used for injecting into the gas, even air chamber, the fan is equipped with first regulator, the blender is equipped with the second regulator, first regulator the second regulator all be used for adjusting the fan the air input of blender, this hot water unit system still include the controller, with the overtemperature prote protection device that the controller is connected, overtemperature prote protection device is used for protecting the safety and stability of boiler subassembly in the use. The overtemperature protection device is used for protecting the safety and stability of the boiler component 2 in the using process, and the water heater unit system has the beneficial effects of safety and stability, high heat exchange rate and sufficient combustion in a mode of premixing gas and air.

Description

Novel low-nitrogen energy-saving water heating unit system

Technical Field

The utility model belongs to the technical field of the boiler and specifically relates to a novel low nitrogen energy-conserving hot water unit system.

Background

The boiler in the prior art has the disadvantages of complex structure (including water wall tubes, large frames, evaporation heating surface tubes, economizers, superheaters, air preheaters and the like), complex operation flow, huge and complex installation equipment, air environment pollution, large raw material consumption, low heat utilization rate and large occupied space.

Referring to fig. 1, chinese utility model patent publication No. CN206989474U discloses an ultra-low nitrogen emission vacuum hot water boiler capable of effectively reducing nitrogen oxide emission, which comprises an ultra-low nitrogen burner, a gas distribution pipe, a furnace, a convection heat exchange pipe, a fin condensation pipe, a primary hot water medium, and an inner and outer spiral pipe set; wherein, the ultra-low nitrogen combustor is linked together with a gas distribution pipe, the convection current heat exchange tube is arranged at the combustion area of vacuum hot water boiler furnace with a set of, the regional condenser pipe that is a set of in convection current heat exchange tube rear, convection current heat exchange tube and condenser pipe are linked together with a hot media water, inside and outside spiral bank of tubes is located vacuum hot water boiler top.

The structure of the prior art is complex, the gas concentration can not be adjusted, the heat exchange efficiency is not high, and the combustion is not sufficient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel low nitrogen energy-conserving hot water unit system of safety and stability, heat exchange rate height, abundant burning.

For reaching above-mentioned advantage, the utility model provides a novel low nitrogen energy-conserving hot water unit system, including coupling assembling, boiler subassembly, water tank set spare, coupling assembling is including the fan that is used for injecting into the air that connects gradually, be used for injecting into blender, the even air chamber of gas, the fan is equipped with first regulator, the blender is equipped with the second regulator, first regulator the second regulator all be used for adjusting the fan the air input of blender, this hot water unit system still include the controller, with the overtemperature prote protection device that the controller is connected, overtemperature protection device is used for protecting the safety and stability of boiler subassembly in the use.

In an embodiment of the utility model, boiler subassembly includes furnace, evenly distributed in the water-cooling jacket of furnace inner wall, be located a plurality of division boards in the water-cooling jacket, be equipped with a plurality of first order convection heating surface fluorescent lamps and second grade convection heating surface fin pipe between the division board, first order convection heating surface fluorescent lamp the second grade convection heating surface fin pipe all with the water-cooling jacket intercommunication, the upper end that the water-cooling jacket was equipped with a plurality of water-cooled tubes, the water-cooled tube outer wall is equipped with the first fin that extends along length direction, and is adjacent be equipped with "T" style of calligraphy air baffle between the first fin.

The utility model discloses an embodiment, the water tank subassembly include circulation tank, with the wet return of circulation tank upper end intercommunication, with the feed pipe of circulation tank lower extreme intercommunication, the feed pipe is equipped with circulating water pump, water flow switch, feedwater pressure detector, feedwater temperature detector, and the wet return is equipped with return water pressure detector, return water temperature detector, filter.

In an embodiment of the present invention, the mixer is further provided with an air inlet solenoid valve, a gas pressure detector, and a gas flow detector.

The utility model discloses an in the embodiment, the flue gas is natural gas or liquefied gas and air mixing's result, be equipped with the combustion chamber that is used for the flue gas burning in the furnace, adjacent the division board has can allow the flue gas to pass through the breach.

In one embodiment of the present invention, the boiler assembly is further provided with an electrode rod and a flame detection rod located in the combustion chamber.

In an embodiment of the present invention, a gap capable of accommodating the T-shaped gas baffle is provided between the first fin of the water-cooled tube and the first fin of the other water-cooled tube.

In an embodiment of the present invention, the second-stage convection heating surface fin tube outer wall is provided with a second fin, and the first fin and the second fin are both used for increasing the contact area during combustion and improving the heat exchange efficiency.

In one embodiment of the present invention, one side of the lower end of the water cooling jacket is provided with a hot water inlet communicated with the second stage convection heating surface finned tube, and the other side of the upper end of the water cooling jacket is provided with a hot water outlet communicated with the water cooling tube.

The utility model discloses in, overtemperature prote device is used for protecting the safety and stability of boiler subassembly 2 in the use, through the mode that mixes behind gas and the air in advance, makes this hot water unit system have safety and stability, heat exchange rate height, the abundant beneficial effect of burning.

Drawings

Fig. 1 is a schematic view showing the structure of a prior art ultra-low nitrogen discharge vacuum hot water boiler.

Fig. 2 is a schematic structural diagram of a novel low-nitrogen energy-saving water heater unit system according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram showing the connection assembly and the boiler assembly of the novel low-nitrogen energy-saving water heater unit system of fig. 2.

Fig. 4 is a left side view of the boiler assembly of the new low nitrogen, energy efficient water heater unit system of fig. 2.

FIG. 5 is a partial enlarged view of the novel low-nitrogen energy-saving water heater unit system A shown in FIG. 4

Fig. 6 is a schematic structural view of a water tank assembly of the novel low-nitrogen energy-saving water heater unit system shown in fig. 2.

Fig. 7 shows a correlation diagram of the novel low-nitrogen energy-saving water heater unit system of fig. 2.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments in order to provide the best mode, structure, features and effects according to the present invention.

Please refer to fig. 2 and fig. 3, the novel low-nitrogen energy-saving hot water unit system according to the first embodiment of the present invention includes a connection assembly 1, a boiler assembly 2, and a water tank assembly 3, wherein the connection assembly 1 includes a fan 11 for injecting air, a mixer 12 for injecting fuel gas, and a gas homogenizing chamber 13, which are connected in sequence, the fan 11 is provided with a first regulator 111, the mixer 12 is provided with a second regulator 121, the first regulator 111 and the second regulator 121 are both used for regulating the air inflow of the fan 11 and the mixer 12, the hot water unit system further includes a controller and an over-temperature protection device connected with the controller, and the over-temperature protection device is used for protecting the safety and stability of the boiler assembly 2 in the using process. The first adjuster 111 and the second adjuster 121 are each provided with a servo motor. The mixer 12 is further provided with an intake solenoid valve 122, a gas pressure detector 123, and a gas flow rate detector 124.

Referring to fig. 4 and 5, the boiler assembly 2 includes a furnace 21, a water cooling jacket 22 uniformly distributed on an inner wall of the furnace 21, a plurality of partition plates 23 located in the water cooling jacket 22, a plurality of first-stage convection heating surface light pipes 24 and second-stage convection heating surface fin pipes 25 arranged between the partition plates 23, the first-stage convection heating surface light pipes 24 and the second-stage convection heating surface fin pipes 25 are both communicated with the water cooling jacket 22, flue gas is a product of mixing natural gas or liquefied gas with air, a combustion chamber 26 for burning flue gas is arranged in the furnace 21, and the adjacent partition plates 23 have gaps 231 for allowing the flue gas to pass through.

The upper end of the water-cooling jacket 22 is provided with a plurality of water-cooling tubes 27, the outer wall of each water-cooling tube 27 is provided with first fins 271 extending along the length direction, and a T-shaped air baffle 272 is arranged between the adjacent first fins 271. The flue gas is a product of mixing natural gas or liquefied gas and air, and the T-shaped air baffle 272 is used for reducing the passing clearance of the flue gas, so that the flue gas enters the combustion chamber 26 more uniformly. A gap capable of accommodating the T-shaped air baffle 272 is arranged between the first fin 271 of the water-cooling tube 27 and the first fin 271 of the other water-cooling tube 27. The T-shaped gas baffle 272 also has the functions of uniformly distributing mixed gas and preventing tempering, and the combustion safety of post-premixing is ensured.

The outer wall of the second-stage convection heating surface finned tube 25 is provided with a second fin 252, and the first fin 271 and the second fin 252 are both used for increasing the contact area during combustion and improving the heat exchange efficiency.

The space of the gas homogenizing chamber 13 comprehensively considers that the smoke can reach the ignition electrode point in the ignition time so as to ignite the smoke and ensure the 100 percent ignition success rate. The gas homogenizing chamber 13 is provided with a detachable gas homogenizing plate 131 for enabling the flue gas to uniformly pass through, so that the flue gas mixed in the mixer 12 is mixed again in the gas homogenizing chamber 13 and uniformly distributed on the water cooling pipe 27, uniform combustion of a combustion surface is ensured, and NOx emission is reduced.

The lower extreme of boiler subassembly 2 is equipped with collection petticoat pipe 4 and with the play tobacco pipe 41 of collection petticoat pipe 4 intercommunication, be equipped with anti-resonance gusset 411 in the play tobacco pipe 41. The anti-resonance rib plate 411 is used for preventing the smoke from generating resonance with the body panel during operation.

One side of the lower end of the water-cooling jacket 22 is provided with a hot water inlet 251 communicated with the second-stage convection heating surface finned tube 25, the other side of the upper end of the water-cooling jacket 22 is provided with a hot water outlet 272 communicated with the water-cooling tube 27, the hot water inlet 251 is communicated with the water supply tube 33, and the hot water outlet 272 is communicated with the water return tube 32.

The boiler assembly 2 is further provided with an electrode rod 261 positioned in the combustion chamber 26, a flame detection rod 262, and a fire viewing mirror 263 positioned on the outer wall of the hearth 21.

Referring to fig. 6, the water tank assembly 3 includes a circulating water tank 31, a water return pipe 32 communicating with an upper end of the circulating water tank 31, and a water supply pipe 33 communicating with a lower end of the circulating water tank 31, the water supply pipe 33 is provided with a circulating water pump 331, a water flow switch 332, a water supply pressure detector 333, and a water supply temperature detector 334, and the water return pipe 32 is provided with a water return pressure detector 321, a water return temperature detector 322, and a filter 323. The upper end of the circulating water tank 31 is provided with an access hole 311 and an exhaust hole 312, the two sides of the circulating water tank 31 are provided with a water filling port 313 and a water draining port 314, the bottom of the circulating water tank 31 is provided with a sewage draining port 315, and the circulating water tank 31 is further provided with a liquid level detector 316 for detecting the liquid level in the circulating water tank 31.

Referring to fig. 7, the controller is electrically connected to the over-temperature protection device, the water flow switch 332, the blower 11, the circulating water pump 331, the first regulator 111, the second regulator 121, the solenoid valve, and the electrode rod 261, respectively.

The overtemperature protection device is electrically connected with a water supply pressure detector 333, a water supply temperature detector 334, a water return pressure detector 321, a water return temperature detector 322, a gas pressure detector 123, a gas flow detector 124, a flame detection rod 262 and a liquid level detector 316 respectively.

The overtemperature protection device is used for detecting and displaying the pressure and flow of fuel gas, the temperature in the hearth 21, the liquid level height in the circulating water tank 31, the water supply pressure and temperature of a water supply pipe 33 and the water return pressure and temperature of a water return pipe 32. The over-temperature protection device can display the numerical value of each detector and has an alarm function.

For example: when the over-temperature protection device detects that the temperature in the hearth 21 exceeds the set temperature, the over-temperature protection device gives an alarm and sends a signal to the controller, and the controller respectively controls and reduces the air intake of the first regulator 111 and the gas intake of the second regulator 121; when the overtemperature protection device detects that the temperature of the return water is high, the overtemperature protection device gives an alarm and sends a signal to the controller, and the controller controls the circulating water pump 331 to increase the power and improve the flow rate of the circulating water.

In the using process, air is uniformly mixed with natural gas to be combusted, which enters from the mixer 12, through the fan 11 through the regulator and then is sprayed into the square gas homogenizing chamber 13, the regulator is used for regulating the air inflow of the fan 11, and smoke entering from the fan 11 and the mixer 12 is mixed again in the gas homogenizing chamber 13. The fully mixed flue gas passes through the gas homogenizing plate 131 and then uniformly contacts the outer surface of the water cooling tube 27 through the T-shaped gas baffle 272, then the flue gas enters the combustion chamber 26 for combustion, the flue gas electrode rod 261 is ignited, the generated heat is absorbed by the water cooling tube 27, the first-stage convection heating surface light tube 24, the second-stage convection heating surface fin tube 25 and the water cooling jacket 22 on the inner wall of the boiler, the flue gas moves downwards in a first-stage manner through the plurality of partition plates 23, the temperature is gradually reduced along with the movement of the flue gas, the preheating generated by the flue gas is further absorbed by the first-stage convection heating surface light tube 24 and the second-stage convection heating surface fin tube 25 which are positioned below the combustion chamber 26, and finally the waste gas or residues generated by the flue gas are discharged through the smoke outlet tube 41 to complete heat exchange. In the combustion process, circulating water flows to the hot water inlet 251 through the circulating water pump 331, then sequentially passes through the second-stage convection heating surface finned tube 25, the first-stage convection heating surface light pipe 24, the water cooling jacket 22 and the water cooling tube 27 to the hot water outlet 272, and finally flows back to the circulating water tank 31 to complete heat exchange. The flue gas exchanges heat with high-temperature hot water generated by air in the hearth 21 in a mixed combustion mode, and the water is heated to become the high-temperature hot water with certain parameters.

A fan 11 and flue gas are premixed, an electric actuating mechanism is adopted between the fan 11 and a mixer 12, stepless speed change is adopted for combustion, and an air electric actuating mechanism drives a flue gas electric actuating mechanism to adjust.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the scope of the present invention.

Claims

1. The utility model provides a novel low nitrogen energy-conserving hot water unit system, includes coupling assembling, boiler subassembly, water tank subassembly, a serial communication port, coupling assembling is including the fan that is used for injecting into the air that connects gradually, the blender that is used for injecting into the gas, even air chamber, the fan is equipped with first regulator, the blender is equipped with the second regulator, first regulator the second regulator all be used for adjusting the fan the air input of blender, this hot water unit system still include the controller, with the overtemperature prote protection device that the controller is connected, overtemperature protection device is used for protecting the safety and stability of boiler subassembly in the use.

2. The novel low-nitrogen energy-saving hot water unit system according to claim 1, wherein the boiler assembly comprises a hearth, a water-cooling jacket uniformly distributed on the inner wall of the hearth, a plurality of partition plates located in the water-cooling jacket, a plurality of first-stage convection heating surface light pipes and second-stage convection heating surface fin pipes arranged between the partition plates, the first-stage convection heating surface light pipes and the second-stage convection heating surface fin pipes are communicated with the water-cooling jacket, a plurality of water-cooling pipes are arranged at the upper end of the water-cooling jacket, first fins extending along the length direction are arranged on the outer walls of the water-cooling pipes, and a T-shaped air baffle is arranged between the adjacent first fins.

3. The novel low-nitrogen energy-saving hot water unit system according to claim 1, wherein the water tank assembly comprises a circulating water tank, a water return pipe communicated with the upper end of the circulating water tank, and a water supply pipe communicated with the lower end of the circulating water tank, the water supply pipe is provided with a circulating water pump, a water flow switch, a water supply pressure detector and a water supply temperature detector, and the water return pipe is provided with a water return pressure detector, a water return temperature detector and a filter.

4. The novel low-nitrogen energy-saving water heater unit system according to claim 1, wherein the mixer is further provided with an air inlet solenoid valve, a gas pressure detector and a gas flow detector.

5. The novel low-nitrogen energy-saving water heater unit system according to claim 2, wherein the flue gas is a mixture of natural gas or liquefied gas and air, a combustion chamber for flue gas combustion is arranged in the hearth, and the adjacent partition plates are provided with gaps allowing the flue gas to pass through.

6. The new low nitrogen, energy efficient water heater unit system according to claim 5, characterized in that said boiler assembly is further provided with an electric grade rod, a flame detection rod located inside said combustion chamber.

7. The novel low-nitrogen energy-saving water heater unit system according to claim 2, wherein a gap for accommodating the T-shaped gas baffle is formed between the first fin of the water cooling pipe and the first fin of the other water cooling pipe.

8. The novel low-nitrogen energy-saving water heater unit system according to claim 2, wherein the second-stage convection heating surface fin tube is provided with a second fin on the outer wall, and the first fin and the second fin are both used for increasing the contact area during combustion and improving the heat exchange efficiency.

9. The novel low-nitrogen energy-saving hot water unit system as claimed in claim 2, wherein one side of the lower end of the water cooling jacket is provided with a hot water inlet communicated with the second stage convection heating surface finned tube, and the other side of the upper end of the water cooling jacket is provided with a hot water outlet communicated with the water cooling tube.