Novel three-box type fuel gas heating system
By adding ceramic cotton pads and mica tubes to the three-box gas heating equipment, and improving the connection flange and air volume adjustment structure of the heating pipeline, the problems of unfiltered combustion air, high temperature and unstable signal of the control box are solved, and higher equipment power and control accuracy are achieved.
Patent Information
- Application Number
- CN202422982024.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-12-04
AI Technical Summary
The combustion air in the existing three-box gas heating equipment is not filtered, the combustion tailwind is poor, the electronic components of the control box cannot withstand high temperatures, the equipment power is limited, and the signal feedback of the ignition electrode lines and ignition electrode ground lines is unstable.
Add ceramic cotton pads to the combustion box for insulation and shock absorption, use mica tubes to protect the ignition electrode lines and ground lines, use rotatable air volume adjustment plates to adjust the air volume, improve the connection flange of the heating pipe to be bent flange, and install ceramic cotton pads to increase the gas pressure stabilization valve and gas storage functions.
It improves the thermal insulation effect and control accuracy of the equipment, reduces the impact of heat conduction and vibration, ensures stable feedback of flame ion signals and the throughput of mixed gas, and increases the power of the equipment.
Smart Images
Figure CN223258202U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a novel three-box gas heating system, belonging to the technical field of heating in industrial production. Background Art
[0002] Existing three-box gas heating equipment lacks a filtration system for combustion air entering the system, resulting in poor cleanliness of the combustion exhaust air. There's no thermal insulation between the combustion box and the control box, and because the control box's electronic components can't withstand high temperatures, the equipment's power cannot be increased. Chinese Patent ZL2021233973765, titled "A Three-Box Gas Heating System," incorporates a combustion air filter, allowing combustion exhaust air to be discharged back into the heating box, significantly improving thermal efficiency. The thermal insulation effectively ensures the normal operating temperature of the control box, allowing for increased equipment power. While addressing the issues of no filtration system and the inability of the control box's electronic components to withstand high temperatures, the following issues remain: The heating pipe flange is a solid flange, causing heat conduction to raise the equipment temperature, significantly impacting electronic control components and causing high vibration intensity. The fire grid fixes the air volume, while the air-fuel ratio can only adjust the gas volume. The ignition electrode wire and ignition electrode ground wire must be connected to the combustion program control board through the combustion box. Due to the high temperature, the ion feedback signal value fluctuates significantly, resulting in inaccurate combustion quality control. Utility Model Content
[0003] The purpose of the utility model is to provide a new three-box gas heating system, which is equipped with a ceramic cotton pad to achieve heat insulation and shock absorption effects, thereby increasing the flow rate of mixed gas; adding a mica tube in the combustion box can reduce the high temperature impact on the ignition electrode wire and the ignition electrode ground wire, ensure the stability of the flame ion signal value feedback, improve the control accuracy, and solve the problems existing in the background technology.
[0004] The technical solution of the utility model is:
[0005] A new three-box gas heating system comprises a combustion box, a filter heat insulation box and a control box arranged in sequence. A gas pressure regulating valve, a combustion program control board and a pressure difference control switch are arranged inside the control box. The combustion program control board and the pressure difference control switch are respectively installed on both sides of the gas pressure regulating valve; a venturi tube is arranged inside the combustion box, and a heating pipe connecting flange is arranged on the side of the combustion box away from the filter heat insulation box, and an ignition electrode is built in; the heating pipe connecting flange is connected to the heating pipe, and a tail wind fan is connected to the end of the heating pipe; its special feature is that the two ends of the gas pressure regulating valve are respectively connected to the gas storage connector and the gas pipe connector of the gas pipe, and the gas pipe The connecting piece passes through the filter insulation box and extends into the venturi tube inside the combustion box, and a gas nozzle is installed at the end of the gas pipeline connecting piece; an air volume adjustment plate is provided at one end of the filter insulation box close to the combustion box; a mica tube is provided in the combustion box above the venturi tube, and the ignition electrode is connected to the combustion program control board through the ignition electrode wire and the ignition electrode ground wire, and the ignition electrode wire and the ignition electrode ground wire in the combustion box are arranged in the mica tube; the heating pipe connecting flange is a bent flange, and the heating pipe connecting flange is connected to the heating pipe through the heating pipe flange, and ceramic cotton pads are provided between the heating pipe connecting flange and the combustion box and between the heating pipe connecting flange and the heating pipe flange.
[0006] The filter heat insulation box is composed of a heat insulation plate, a filter screen, and a combustion air distribution plate. The heat insulation plate is arranged on a side adjacent to the control box, and the combustion air distribution plate is arranged on a side adjacent to the combustion box. The combustion air distribution plate is provided with a plurality of ventilation holes. A rotatable air volume adjustment plate is provided on the gas pipeline connector. The air volume adjustment plate is provided with adjustment holes that match the ventilation holes on the combustion air distribution plate. By rotating the air volume adjustment plate, the relative position between the adjustment holes on the air volume adjustment plate and the ventilation holes on the combustion air distribution plate is changed, and the amount of air entering is adjusted, thereby eliminating the fire net in the existing technology, increasing the amount of mixed gas passing through, and improving the power accordingly. The air volume adjustment plate and the combustion air distribution plate are both circular plates, the diameter of the air volume adjustment plate is smaller than the diameter of the combustion air distribution plate, and the adjustment holes on the air volume adjustment plate only match the ventilation holes on the combustion air distribution plate close to the gas pipeline connector. The ventilation holes on the combustion air distribution plate away from the gas pipeline connector are not blocked by the air volume adjustment plate.
[0007] The bent flange consists of a flange body and two L-shaped plates, with L-shaped plates symmetrically arranged at both ends of the flange body; one end of the L-shaped plate is vertically connected to the flange body, and the other end is connected to the combustion box and arranged parallel to the combustion box.
[0008] The bent flange is made of sheet metal, and the sheet metal bent flange greatly reduces the heat conduction area.
[0009] The outer diameter of the air volume adjustment plate is larger than the outer diameter of the venturi tube.
[0010] The gas nozzle is located in the venturi tube and has a certain distance from the tube wall of the venturi tube and the inner plate of the combustion box.
[0011] The gas pipeline gas storage connector increases the inner diameter of DN20 on the basis of the original DN20 single-end thread standard pipe fitting, has a gas storage function, and can stabilize the gas supply when the gas supply pressure and flow fluctuate.
[0012] The beneficial effects of the utility model are as follows: adding a ceramic cotton pad can achieve heat insulation and shock absorption effects; the air volume adjustment plate can increase the amount of mixed gas passing through; adding a mica tube in the combustion box can reduce the high temperature impact on the ignition electrode wire and the ignition electrode ground wire, ensure the stable feedback of the flame ion signal value, and improve the control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the filter insulation box of the utility model;
[0015] In the figure: combustion box 1, control box 2, filter insulation box 3, insulation board 3-1, filter 3-2, combustion air distribution hole plate 3-3, gas pressure stabilizing valve 4, gas pipeline gas storage connector 5, gas nozzle 6, combustion program control board 7, pressure difference control switch 8, Venturi tube 9, gas pipeline connector 10, heating pipeline connecting flange 11, ignition electrode 12, heating pipeline 13, tail air fan 14, air volume adjustment plate 15, mica tube 16, ventilation hole 17, adjustment hole 18. DETAILED DESCRIPTION
[0016] The present invention will be further described below with reference to the accompanying drawings and through examples.
[0017] A novel three-box gas heating system comprises a combustion box 1, a filter heat insulation box 3 and a control box 2 arranged in sequence, a gas pressure stabilizing valve 4, a combustion program control board 7 and a pressure difference control switch 8 are arranged inside the control box 2, and the combustion program control board 7 and the pressure difference control switch 8 are respectively installed on both sides of the gas pressure stabilizing valve 4; a venturi tube 9 is provided inside the combustion box 1, and a heating pipe connecting flange 11 is provided on the side of the combustion box 1 away from the filter heat insulation box 3, and an ignition electrode 12 is built in; the heating pipe connecting flange 11 is connected to the heating pipe 13, and a tail wind fan 14 is connected to the end of the heating pipe 13; its special feature is that the two ends of the gas pressure stabilizing valve 4 are respectively connected to the gas pipeline gas storage connector 5 and the gas pipeline connector 10, and the gas pipeline connector The connector 10 passes through the filter insulation box 3 and extends into the venturi tube 9 inside the combustion box 1, and a gas nozzle 6 is installed at the end of the gas pipe connector 10; an air volume adjustment plate 15 is provided at one end of the filter insulation box 3 close to the combustion box 1; a mica tube 16 is provided in the combustion box 1 above the venturi tube 9, and the ignition electrode 12 is connected to the combustion program control board 7 through the ignition electrode wire and the ignition electrode ground wire, and the ignition electrode wire and the ignition electrode ground wire in the combustion box 1 are arranged in the mica tube 16; the heating pipe connecting flange 11 is a bent flange, and the heating pipe connecting flange 11 is connected to the heating pipe 13 through the heating pipe flange, and ceramic cotton pads are provided between the heating pipe connecting flange 11 and the combustion box 1 and between the heating pipe connecting flange 11 and the heating pipe flange.
[0018] The filtering heat insulation box 3 is composed of a heat insulation plate 3-1, a filter 3-2 and a combustion air distribution hole plate 3-3. The heat insulation plate 3-1 is arranged on a side adjacent to the control box 2, and the combustion air distribution hole plate 3-3 is arranged on a side adjacent to the combustion box 1. The combustion air distribution hole plate 3-3 is provided with a plurality of ventilation holes 17. A rotatable air volume adjustment plate 15 is provided on the gas pipeline connector 10. The air volume adjustment plate 15 is provided with adjustment holes 18 that cooperate with the ventilation holes 17 on the combustion air distribution hole plate 3-3. By rotating the air volume adjustment plate 15, the relative position between the adjustment holes 18 on the air volume adjustment plate and the ventilation holes 17 on the combustion air distribution hole plate is changed, the amount of air entering is adjusted, the fire net of the existing technology is removed, the amount of mixed gas passing through is increased, and the power is correspondingly improved. The air volume adjustment plate 15 and the combustion air distribution hole plate 3-3 are both circular plates. The diameter of the air volume adjustment plate 15 is smaller than that of the combustion air distribution hole plate 3-3. The adjustment holes 18 on the air volume adjustment plate only cooperate with some ventilation holes on the combustion air distribution hole plate close to the gas pipeline connector 10, and the ventilation holes on the combustion air distribution hole plate 3-3 away from the gas pipeline connector 10 are not blocked by the air volume adjustment plate 15.
[0019] The bent flange consists of a flange body and two L-shaped plates, with L-shaped plates symmetrically arranged at both ends of the flange body; one end of the L-shaped plate is vertically connected to the flange body, and the other end is connected to the combustion box 1 and arranged parallel to the combustion box 1.
[0020] The bent flange is made of sheet metal, and the sheet metal bent flange greatly reduces the heat conduction area.
[0021] The outer diameter of the air volume adjustment plate 15 is larger than the outer diameter of the venturi tube 9 .
[0022] The gas nozzle 6 is located in the venturi tube 9 and has a certain distance from the tube wall of the venturi tube 9 and the inner plate of the combustion box.
[0023] The gas pipeline gas storage connector 5 increases the inner diameter of DN20 on the basis of the original DN20 single-end thread standard pipe fitting, has a gas storage function, and stabilizes the gas supply when the gas supply pressure and flow fluctuate.
[0024] The heating pipe connection flange 11 of the present invention is a sheet metal bent flange, which greatly reduces the heat conduction area. Ceramic cotton pads are installed between the heating pipe connection flange 11 and the combustion box 1, and between the heating pipe connection flange 11 and the heating pipe flange, which have the effect of heat insulation and shock absorption. The gas pipe gas storage connector 5 is a customized machined part, which is installed at the inlet end of the gas pressure regulating valve 4. It increases the inner diameter of DN20 on the basis of the original DN20 single-end thread standard pipe fitting, improving the defect of the original DN20 single-end thread standard pipe fitting that affects combustion when the seasonal hot and cold gas supply pressure and flow rate change. It has a gas storage function and stabilizes the gas supply when the gas supply pressure and flow rate fluctuate. The present invention adds a rotatable air volume adjustment plate 15 to the gas pipe connector 10, so that the air volume can be adjusted and increased, eliminating the fire net of the existing technology, increasing the amount of mixed gas passing through, and correspondingly improving the power. The present invention also adds a mica tube 16 to reduce the high temperature effect on the ignition electrode wire and the ignition electrode ground wire, ensuring the stable feedback of the flame ion signal value and improving the control accuracy.
Claims
1. A new three-tank gas heating system, characterized by: The invention comprises a combustion box (1), a filter heat insulation box (3) and a control box (2) which are arranged in sequence, wherein a gas pressure stabilizing valve (4), a combustion program control panel (7) and a pressure difference control switch (8) are arranged inside the control box (2), and the combustion program control panel (7) and the pressure difference control switch (8) are respectively installed on both sides of the gas pressure stabilizing valve (4); a venturi tube (9) is arranged inside the combustion box (1), and a heating pipe connecting flange (11) is arranged on the side of the combustion box (1) away from the filter heat insulation box (3), and an ignition electrode (12) is built in; the heating pipe connecting flange (11) is connected to the heating pipe (13), and a tail wind fan (14) is connected to the end of the heating pipe (13); the gas pressure stabilizing valve (4) is characterized in that the two ends are respectively connected to the gas pipe gas storage connector (5) and the gas pipe connector (10), and the gas pipe connector (10) is connected to the heating pipe (13). A gas nozzle (6) is installed at the end of a gas pipe connector (10) that passes through a filter heat insulation box (3) and extends into a venturi tube (9) inside a combustion box (1); an air volume regulating plate (15) is provided at one end of the filter heat insulation box (3) close to the combustion box (1); a mica tube (16) is provided in the combustion box (1) above the venturi tube (9); an ignition electrode (12) is connected to a combustion program control board (7) through an ignition electrode wire and an ignition electrode ground wire, and the ignition electrode wire and the ignition electrode ground wire in the combustion box (1) are arranged in the mica tube (16); the heating pipe connecting flange (11) is a bent flange, the heating pipe connecting flange (11) is connected to the heating pipe (13) through the heating pipe flange, and ceramic cotton pads are provided between the heating pipe connecting flange (11) and the combustion box (1) and between the heating pipe connecting flange (11) and the heating pipe flange.
2. A novel three-tank gas heating system according to claim 1, characterized in that: The filter heat insulation box (3) is composed of a heat insulation plate (3-1), a filter screen (3-2) and a combustion air distribution hole plate (3-3), wherein the heat insulation plate (3-1) is arranged on a side adjacent to the control box (2), and the combustion air distribution hole plate (3-3) is arranged on a side adjacent to the combustion box (1), and a plurality of ventilation holes (17) are provided on the combustion air distribution hole plate (3-3). A rotatable air volume adjustment plate (15) is provided on the gas pipeline connector (10), and the air volume adjustment plate (15) is provided with adjustment holes (18) that cooperate with the ventilation holes (17) on the combustion air distribution hole plate (3-3).
3. A novel three-tank gas heating system according to claim 2, characterized in that: The air volume regulating plate (15) and the combustion air distribution hole plate (3-3) are both circular plates. The diameter of the air volume regulating plate (15) is smaller than the diameter of the combustion air distribution hole plate (3-3). The regulating hole (18) on the air volume regulating plate only cooperates with a portion of the ventilation holes on the combustion air distribution hole plate close to the gas pipeline connector (10).
4. A novel three-tank gas heating system according to claim 1 or 2, characterized in that: The bent flange consists of a flange body and two L-shaped plates, with the L-shaped plates symmetrically arranged at both ends of the flange body; one end of the L-shaped plate is vertically connected to the flange body, and the other end is connected to the combustion box (1), and is arranged parallel to the combustion box (1).
5. A novel three-tank gas heating system according to claim 4, characterized in that: The bent flange is made of sheet metal.
6. A novel three-tank gas heating system according to claim 2, characterized in that: The outer diameter of the air volume regulating plate (15) is larger than the outer diameter of the Venturi tube (9).