CN209944736U

CN209944736U - Burner device of gas boiler

Info

Publication number: CN209944736U
Application number: CN201920663189.0U
Authority: CN
Inventors: 廖柏森
Original assignee: Golden Brand Fujian Combustion Equipment Co Ltd
Current assignee: Golden Brand Fujian Combustion Equipment Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-14
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses a gas boiler burner device belongs to boiler equipment, has solved boiler operational reliability problem, and its technical scheme main points are first safety solenoid valve, some firearm, second safety solenoid valve, direct current speed governing fan, thermocouple, oxygen sensor, water supply pump, drainage water pump, first water route solenoid valve and second water route solenoid valve are connected respectively in the controller, through the control to boiler burning, improve boiler combustion process's controllability, improve the safe effect.

Description

Burner device of gas boiler

Technical Field

The utility model relates to a boiler equipment field especially relates to a gas boiler burner device.

Background

The gas boiler is mainly applied to hot water supply places of hotels, and is a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode to achieve the purpose of preparing hot water.

The existing gas boiler burner device is not sufficient in controlling the combustion efficiency, mainly in that the monitoring and safety performance of some environmental data of the equipment are not perfect enough, so that the waste of gas fuel and the pollution of air are caused. To reduce waste and pollution, the combustion efficiency needs to be improved, and the reliability of the operation of each device needs to be improved.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. In view of this, the utility model aims at providing a gas boiler burner device, intelligent control structure, improvement security and control comprehensiveness can improve combustion efficiency's advantage.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a gas boiler burner device, includes furnace, sets up in the water tank of furnace top and the burner tip that is located the furnace bottom, the burner tip passes through the tube coupling gas interface, be provided with first safety solenoid valve on the pipeline between gas interface and the burner tip, furnace's bottom still is provided with some firearm, some firearm pass through tube coupling in gas interface, installs second safety solenoid valve on the pipeline of some firearm, one side of burner tip is provided with direct current speed governing fan, still be provided with in the furnace and be used for detecting the thermocouple of temperature, be used for the passageway of airing exhaust, be provided with the oxygen sensor in the passageway of airing exhaust, install water supply pump and drainage water pump on the water tank, water supply pump's entrance is provided with first water route solenoid valve, drainage water pump's exit is provided with second rivers solenoid valve.

As a specific aspect of the present invention, it may be preferable that: the first safety electromagnetic valve, the igniter, the second safety electromagnetic valve, the direct-current speed regulation fan, the thermocouple, the oxygen sensor, the water supply pump, the water drainage pump, the first water path electromagnetic valve and the second water path electromagnetic valve are respectively connected to the controller.

As a specific aspect of the present invention, it may be preferable that: the controller is a PLC controller or an industrial intelligent terminal.

As a specific aspect of the present invention, it may be preferable that: and the industrial control intelligent terminal transmits data to the remote server through the Internet of things.

As a specific aspect of the present invention, it may be preferable that: and a pipeline of the combustion nozzle is connected with a gas pressure switch.

As a specific aspect of the present invention, it may be preferable that: a first temperature sensor is arranged in the water tank and connected to the controller; and a second temperature sensor is arranged at the outlet of the drainage pump and connected to the controller.

As a specific aspect of the present invention, it may be preferable that: the oxygen sensor comprises a diffusion chamber for tail gas to enter, a reference chamber for storing air, an anode shell for forming the diffusion chamber and the reference chamber, and a cathode part arranged in the anode shell, wherein the anode shell is provided with a diffusion small hole communicated with the diffusion chamber and a heater close to the reference chamber.

As a specific aspect of the present invention, it may be preferable that: the boiler is provided with a human body sensor, the human body sensor is used for sensing the approaching range of a human body and outputting a judgment signal, the human body sensor is connected with a prompt circuit, and the prompt circuit responds according to the judgment signal.

The utility model discloses technical effect mainly embodies in following aspect: the furnace cavity mainly releases heat energy, the total heat released by the furnace cavity is Q, the water tank is a heat absorbing part, the heat absorbed by the water tank is Ql, and the heat dissipation loss of the furnace cavity in the process of releasing heat is Q2. The total effective heat absorption is related to the boiler structure according to the law of conservation of energy. To improve the heat conversion efficiency, it is necessary to reduce the heat dissipation loss, and a commonly used method is to add a heat insulating material to prevent the heat dissipation. Therefore, the heat conversion efficiency of different boiler components is different. The combustion system mainly comprises a fan, an oxygen sensor and a combustion furnace chamber, wherein the oxygen sensor is used for collecting oxygen content in waste gas, and the controller is used for adjusting the proportion of fuel gas and air to enable the oxygen content in the waste gas to be in a proper range, so that the boiler is ensured to always operate in an optimal combustion state, the combustion thermal efficiency is improved, and the purposes of saving fuel and improving economy are achieved.

Drawings

FIG. 1 is a schematic view of the structural installation of a boiler in the embodiment;

FIG. 2 is a schematic structural view of an oxygen sensor according to an embodiment;

FIG. 3 is a schematic diagram of a hint circuit in an embodiment.

Reference numerals: 1. an anode; 2. a cathode; 3. a diffusion aperture; 4. a pump battery; 5. a reference battery; 6. a diffusion chamber; 7. a reference chamber; 8. a heater; 9. a human body sensor; 10. and a prompt circuit.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention so that the technical solution of the present invention can be more easily understood and grasped, and should not be construed as limiting the present invention.

Example (b):

a gas boiler burner apparatus, as illustrated with reference to fig. 1, wherein: SV-0, SV-1 and SV-2 are safety solenoid valves, in the embodiment, SV-0 and SV-1 are called first safety solenoid valves, and SV-2 is called second safety solenoid valves, and are used for controlling the introduction and the disconnection of natural gas.

PS is a gas pressure switch for testing the pressure in the gas pipeline.

DH is the igniter, mainly for the burner tip is ignited, the function of igniting the big fire with the small fire.

BN is a burner tip.

SV-3 and SV-4 are waterway solenoid valves, which are called a second waterway solenoid valve and a first waterway solenoid valve in the embodiment, and control water supply and water delivery.

CB is control panel, also is the controller. The dotted line is the connecting line of the control panel.

FJ is a direct-current speed-regulating fan and controls the proportion of fuel gas and air.

T0 and T1 are first and second temperature sensors for detecting the temperature of the boiler.

PUMP0 and PUMPl are used as water supply PUMP and water discharge PUMP for regulating water flow and speed.

RG is a thermocouple to detect whether the temperature in the furnace cavity is normal or not, and usually plays a role in protection.

QX is an oxygen sensor for detecting the oxygen content of the air outlet.

The concrete structure is as follows: including furnace, set up in the water tank of furnace top, and be located the burner of furnace bottom, the burner passes through the tube coupling gas interface, be provided with first safety solenoid valve on the pipeline between gas interface and the burner, furnace's bottom still is provided with some firearm, some firearm pass through tube coupling in gas interface, install second safety solenoid valve on the pipeline of some firearm, one side of burner is provided with direct current speed governing fan, still be provided with the thermocouple that is used for detecting the temperature in the furnace, the passageway of airing exhaust for airing exhaust, be provided with the oxygen sensor in the passageway of airing exhaust, install water supply pump and drainage water pump on the water tank, water supply pump's entrance is provided with first water route solenoid valve, drainage water pump's exit is provided with second rivers solenoid valve. The first safety electromagnetic valve, the igniter, the second safety electromagnetic valve, the direct-current speed regulation fan, the thermocouple, the oxygen sensor, the water supply pump, the water drainage pump, the first water path electromagnetic valve and the second water path electromagnetic valve are respectively connected to the controller.

The controller is a PLC controller or an industrial intelligent terminal. The industrial control intelligent terminal transmits data to the remote server through the Internet of things. The pipeline of the burner is connected with a gas pressure switch.

A first temperature sensor is arranged in the water tank and connected to the controller; and a second temperature sensor is arranged at the outlet of the drainage pump and connected to the controller.

Referring to fig. 2, the oxygen sensor comprises a diffusion chamber 6 for the entry of exhaust gas, a reference chamber 7 for storing air, an anode 1 casing for forming the diffusion chamber 6 and the reference chamber 7, a cathode 2 component arranged inside the anode 1 casing, and a diffusion aperture 3 communicating with the diffusion chamber 6 and a heater 8 close to the reference chamber 7 arranged on the anode 1 casing.

The explanations for the diffusion chamber 6 and the reference chamber 7 are:

the diffusion chamber 6 is intended to receive the exhaust gases from the boiler exhaust, while the reference chamber 7 is intended to receive the oxygen-containing gas or directly air. Four cathodes 2 are arranged in the diffusion chamber 6, and an oxygen concentration cell is arranged between the diffusion chamber 6 and the reference chamber 7, which is capable of inducing an induced electromotive force Us in response to the difference in oxygen concentration inside the diffusion chamber 6 and the reference chamber 7. A typical zirconia oxide sensor uses this voltage as an input signal to control the mixture ratio of the fuel gas. Unlike this, the wide band type oxygen sensor is: the boiler control unit controls the oxygen content on both sides of the induction chamber to be consistent, so that the voltage value is maintained at 0.45V. But this voltage value is only a standard reference value which needs another part of the sensor (pump cell 4) to be implemented. The pump cell 4 is located between the diffusion chamber 6 and the exhaust pipe and is capable of pumping oxygen into or out of the diffusion chamber 6 by a control signal sent from the controller according to the reverse action principle of zirconia.

The explanation for the pump cell 4 is:

the pumping cell 4 is made of zirconia, and since the oxygen ions can be moved by applying a voltage across the zirconia, according to this characteristic, when a pumping current flows through the pumping cell 4, the oxygen ions at both ends of the pumping cell 4 are moved, and the direction of the movement is determined by the direction of the pumping current. When the furnace chamber is in lean combustion, namely the combustion is large, the oxygen content in the waste gas is high and is larger than a theoretical value, the induction voltage Us is smaller than 0.45V, the differential voltage Verr is larger than zero, and a pump current Ip larger than zero is generated after passing through the PID controller. After the pump current flows through the pump cell 4, a mechanism for pumping oxygen out of the diffusion chamber 6 is generated, so that the oxygen content in the diffusion chamber 6 is restored to a theoretical value, and Us is maintained at 0.45V; when the combustion in the furnace chamber is rich, i.e. the combustion is relatively small, the oxygen content in the exhaust gas is relatively small and is less than the theoretical value, the induction voltage Us is greater than 0.45V, the difference voltage signal Verr is less than zero, and a pump current less than zero (i.e. the direction is opposite to that in the lean combustion) can be generated after passing through the PID controller. The pumping current can pump oxygen from the outside into the diffusion chamber 6 to restore the oxygen content in the diffusion chamber 6 to the theoretical value, thereby stabilizing the value of Us at 0.45V. In a word, the voltage feedback on the pump oxygen cell can ensure that when the oxygen content in the test cavity is excessive, the redundant oxygen in the cavity is discharged outwards, and the boiler control unit generates forward current; when the oxygen content in the test chamber is insufficient, oxygen is supplied into the chamber, and then the boiler control unit generates negative current. Therefore, the current on the pump oxygen element can measure the residual air quantity in the exhaust gas.

The explanation for the oxygen concentration cell is:

an oxygen concentration cell (induction cell) also made of zirconia is located between the diffusion chamber 6 and the reference chamber 7. Since zirconia has such characteristics: when the oxygen content is different between both sides thereof, electromotive force is generated at the electrodes on both sides of zirconia. Therefore, since the reference chamber 7 and the diffusion chamber 6 have different oxygen concentrations, an electromotive force Us is generated across the oxygen concentration cell, and the magnitude of the electromotive force Us reflects the oxygen concentration in the diffusion chamber 6. Our work is to control the voltage of the oxygen concentration cell to o.45v and to achieve this we control the oxygen concentration inside the diffusion chamber 6 (due to the constant oxygen concentration in the reference chamber 7).

The explanation for the heating means is:

the oxygen concentration cell inside the oxygen sensor is affected by temperature and has the best performance at 700-800 ℃. Therefore, the heating voltage of the heating resistor built in the oxygen sensor is controlled to maintain an appropriate temperature.

The furnace cavity mainly releases heat energy, the total heat released by the furnace cavity is Q, the water tank is a heat absorbing part, the heat absorbed by the water tank is Ql, and the heat dissipation loss of the furnace cavity in the process of releasing heat is Q2. The total effective heat absorption is related to the boiler structure according to the law of conservation of energy. To improve the heat conversion efficiency, it is necessary to reduce the heat dissipation loss, and a commonly used method is to add a heat insulating material to prevent the heat dissipation. Therefore, the heat conversion efficiency of different boiler components is different. The combustion system mainly comprises a fan, an oxygen sensor and a combustion furnace chamber, wherein the oxygen sensor is used for collecting oxygen content in waste gas, and the controller is used for adjusting the proportion of fuel gas and air to enable the oxygen content in the waste gas to be in a proper range, so that the boiler is ensured to always operate in an optimal combustion state, the combustion thermal efficiency is improved, and the purposes of saving fuel and improving economy are achieved.

Referring to fig. 3, in order to improve safety, a person is prevented from approaching to remind a worker. The circuit of fig. 3 is used for prompting. Human sensor 9 is pyroelectric infrared sensor, and this is prior art, can choose from the market and purchase, and wherein each components and parts all encapsulate in the shell, can select for use the pyroelectric infrared sensor of other models such as RD-624 pyroelectric infrared sensor in this embodiment. The output signal s is connected to the relay coil KM1 through a photoelectric coupler, and the normally open contact of the relay controls the power switch of the alarm. Therefore, when a human body approaches, the trigger signal s is at a high level, so that the relay coil KM1 is electrified, and the power supply of the alarm is switched on to start alarming.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. A burner device of a gas boiler comprises a hearth, a water tank arranged above the hearth and a burner nozzle positioned at the bottom of the hearth, it is characterized in that the burner tip is connected with a gas interface through a pipeline, a first safety electromagnetic valve is arranged on the pipeline between the gas interface and the burner tip, the bottom of the hearth is also provided with an igniter which is connected with a gas interface through a pipeline, a second safety electromagnetic valve is arranged on the pipeline of the igniter, one side of the burner is provided with a direct current speed regulating fan, a thermocouple for detecting temperature and an exhaust channel for exhausting air are also arranged in the hearth, an oxygen sensor is arranged in the exhaust channel, a water supply pump and a drainage pump are mounted on the water tank, a first water path electromagnetic valve is arranged at the inlet of the water supply pump, and a second water flow electromagnetic valve is arranged at the outlet of the drainage pump.

2. The gas boiler burner apparatus according to claim 1, wherein the first safety solenoid valve, the igniter, the second safety solenoid valve, the dc adjustable speed fan, the thermocouple, the oxygen sensor, the water supply pump, the water discharge pump, the first water path solenoid valve, and the second water path solenoid valve are connected to a controller, respectively.

3. The gas boiler burner apparatus of claim 2, wherein the controller is a PLC controller or an industrial control intelligent terminal.

4. The gas boiler burner apparatus of claim 3, wherein the industrial control intelligent terminal transmits data to a remote server through the internet of things.

5. The gas boiler burner apparatus as set forth in claim 1, wherein a gas pressure switch is connected to a pipe of said burner tip.

6. The gas boiler burner apparatus according to claim 2, wherein a first temperature sensor is provided in the water tank, the first temperature sensor being connected to the controller; and a second temperature sensor is arranged at the outlet of the drainage pump and connected to the controller.

7. The gas boiler burner apparatus according to claim 1, wherein the oxygen sensor includes a diffusion chamber for the entry of the off-gas, a reference chamber for storing air, an anode casing for forming the diffusion chamber and the reference chamber, a cathode member disposed inside the anode casing, the anode casing being provided with a diffusion orifice communicating with the diffusion chamber and a heater adjacent to the reference chamber.

8. The gas-fired boiler burner apparatus as claimed in claim 1, wherein the boiler is provided with a human body sensor for sensing a human body approach range and outputting a judgment signal, the human body sensor being connected with a prompt circuit, the prompt circuit responding according to the judgment signal.