CN216716573U - High-efficient gas hot-blast furnace system of stabilizing - Google Patents
High-efficient gas hot-blast furnace system of stabilizing Download PDFInfo
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- CN216716573U CN216716573U CN202220307679.9U CN202220307679U CN216716573U CN 216716573 U CN216716573 U CN 216716573U CN 202220307679 U CN202220307679 U CN 202220307679U CN 216716573 U CN216716573 U CN 216716573U
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Abstract
The utility model discloses a high-efficiency stable gas hot blast stove system, and belongs to the technical field of gas hot blast stoves. The utility model discloses an efficient and stable gas hot air furnace system which comprises a hot air furnace, a burner, an ignition gun, a main gas pipeline, a small-fire gas pipeline and a combustion-supporting pipeline; the hot blast stove comprises a body and an air inlet adjusting ring; the body comprises a fuel gas inlet and a natural wind inlet, and the air inlet adjusting ring is arranged at the natural wind inlet; the ignition gun is arranged at the gas inlet; the main gas pipeline comprises a main pipeline, a first pressure gauge, a filter, a pressure regulating valve, a main metal cut-off valve, an auxiliary metal cut-off valve and a proportion regulating valve; the small-fire gas pipeline comprises an auxiliary pipeline, a pressure regulating valve, a first electromagnetic valve, a second electromagnetic valve and a leakage detector; the combustion-supporting pipeline comprises a combustion-supporting pipeline and a combustion-supporting fan. The air inlet quantity is adjusted through the air inlet adjusting ring, so that the control on the air inlet quantity is realized, and the combustion stability is ensured; and the combustion of the air flow can be effectively strengthened by supporting combustion through secondary air.
Description
Technical Field
The utility model relates to a high-efficiency stable gas hot blast stove system, and belongs to the technical field of gas hot blast stoves.
Background
The hot blast stove is directly burnt by adopting fuel, is mixed with air to form hot air, and the hot air is directly contacted with materials to be heated, dried or roasted. The gas hot blast stove uses gas as fuel, such as coal gas, natural gas and the like, and burns the gas through a burner to generate high-temperature gas. The gas hot blast stove as a power machine is widely applied to the industries of inorganic chemical industry, fine chemical industry, metallurgy, electric power, petrifaction, building materials and the like in China. The gas hot-blast stove is used as main equipment provided by a heat source, the improvement of the thermal performance of the hot-blast stove becomes a very troublesome problem in recent years, and the current gas hot-blast stove mainly has the defects of high energy consumption, low heat efficiency, unstable combustion, low safety, high nitrogen oxide emission and the like. In addition, the air inlet of the hot blast stove is mainly natural air, but the control of the natural air is difficult to realize, so that the combustion process is easy to lack oxygen or the air quantity is too large to extinguish, and the combustion is unstable.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a high-efficiency and stable gas hot blast stove system.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an efficient stabilized gas hot blast stove system comprising: the device comprises a hot blast stove, a burner, an ignition gun, a main gas pipeline, a small-fire gas pipeline and a combustion-supporting pipeline; the hot blast stove comprises a body and an air inlet adjusting ring; the body comprises a hot air inlet and a natural air inlet; the natural wind inlet is arranged on the body; the air inlet adjusting ring is arranged at the natural air inlet and used for adjusting the opening size of the natural air inlet; the combustor comprises a gas inlet, a combustion-supporting air inlet and a hot air outlet; the hot air outlet is connected with the hot air inlet; the ignition gun is arranged at the gas inlet; the main gas pipeline comprises a main pipeline, a first pressure gauge, a filter, a pressure regulating valve, a main metal cut-off valve, an auxiliary metal cut-off valve and a proportion regulating valve; the main pipeline comprises a first air inlet and a first air outlet, and the first air outlet is connected with the fuel gas inlet; the first pressure gauge, the filter, the pressure regulating valve, the main metal shut-off valve, the auxiliary metal shut-off valve and the proportion regulating valve are arranged on the main pipeline and distributed in the direction from the first air inlet to the first air outlet; the small-fire gas pipeline comprises an auxiliary pipeline, a pressure regulating valve, a first electromagnetic valve, a second electromagnetic valve and a leakage detector; the auxiliary pipeline comprises a second air inlet and a second air outlet, the second air outlet is connected with the fuel gas inlet, and the second air inlet is arranged on the main pipeline and is positioned between the first pressure gauge and the filter; the combustion-supporting pipeline comprises a combustion-supporting pipeline and a combustion-supporting fan; the combustion-supporting pipeline comprises a third air inlet and a third air outlet, and the third air outlet is connected with the combustion-supporting air inlet; and the combustion-supporting fan is arranged in the combustion-supporting pipeline and is positioned between the third air inlet and the third air outlet.
In order to improve the safety of the system, the high-efficiency stable gas hot blast stove system further comprises a nitrogen purging protection pipeline, wherein the nitrogen purging protection pipeline comprises a nitrogen inlet, a nitrogen outlet and a second pressure gauge; the nitrogen outlet is arranged between the main pipeline and the first pressure gauge and between the first air inlet and the second air inlet; the second pressure gauge is arranged between the nitrogen inlet and the nitrogen outlet.
The high-efficiency stable gas hot blast stove system also discloses a structure of the hot blast stove: the hot blast stove also comprises an ultraviolet flame monitor, a heat insulation layer and supporting legs, wherein the ultraviolet flame monitor is arranged on the outer surface of the body; the heat-insulating layer is coated on the outer surface of the body; the supporting legs are arranged on the lower portion of the body.
The utility model has the beneficial effects that:
the hot blast stove body is provided with an air inlet adjusting ring, and the air inlet quantity is adjusted through the air inlet adjusting ring, so that the control of the air inlet quantity is realized, and the combustion stability is ensured; and the combustion of the air flow can be effectively strengthened by supporting combustion through secondary air.
The ultraviolet flame detector is arranged outside the hot blast stove body, so that the flame in the hot blast stove can be monitored in real time, and the safety of a gas pipeline is ensured.
The system is provided with a nitrogen purging protection pipeline, and nitrogen purging is carried out on the air inlet pipeline and the hot blast stove body before ignition of the system, so that the safety of the system is ensured.
The gas hot blast stove system has the advantages of simple installation, convenient operation, easy maintenance, high safety and the like; the requirement on the fuel pressure is low; the device has high-precision regulation ratio, more accurate temperature regulation, stable and clean combustion and lower nitrogen oxide emission.
Drawings
FIG. 1 is a schematic structural diagram of an efficient and stable gas hot blast stove system disclosed by an embodiment of the utility model;
FIG. 2 is a schematic structural diagram of a hot blast stove (with an air inlet adjusting ring) disclosed by the embodiment of the utility model;
FIG. 3 is a schematic structural diagram of a hot blast stove disclosed by the embodiment of the utility model;
FIG. 4 is a schematic structural diagram of an air inlet adjusting ring of the hot blast stove disclosed by the embodiment of the utility model;
the device comprises a combustion-supporting fan 1, a combustion-supporting fan 2, an ignition gun 3, a combustor 301, a fuel gas inlet 302, a combustion-supporting air inlet 303, a hot air outlet 34, an electric regulating valve 4, a hot air furnace 41, a body 411, a natural air inlet 42, an air inlet regulating ring 421, a regulating hole 43, a heat insulating layer 44, a support leg 45, an ultraviolet detector 4101, a hot air inlet 5, a filter 6, a first pressure regulating valve 7, a main metal cut-off valve 8, a secondary metal cut-off valve 9, a proportion regulating valve 10, a second pressure regulating valve 11, a first electromagnetic valve 12, a second electromagnetic valve 13, a leakage detector 14, a first pressure gauge 15, a second pressure gauge 16, a main pipeline 17, a nitrogen purging protection pipeline 1701, a nitrogen inlet 1702, a nitrogen outlet 18, a secondary pipeline 1801, a second air inlet 1802, a second air outlet 19, a combustion-supporting pipeline, a fuel gas inlet, a fuel gas outlet, a fuel gas inlet, a fuel gas detector, 1901. a third air inlet 1902 and a third air outlet.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the utility model, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope covered by the technical content disclosed by the utility model without affecting the effect and the achievable purpose of the utility model. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms may be changed or adjusted without substantial change in the technical content.
As shown in fig. 1-4, a high efficiency stable gas hot blast stove system comprises: the device comprises a hot blast stove 4, a burner 3, an ignition gun 2, a main gas pipeline, a small-fire gas pipeline and a combustion-supporting pipeline; the hot blast stove 4 comprises a body 41 and an air inlet adjusting ring 42; the body 41 comprises a hot air inlet 4101 and a natural air inlet 411; the natural wind inlet 411 is arranged on the body 41; the air inlet adjusting ring 42 is arranged at the natural air inlet 411 and is used for adjusting the opening size of the natural air inlet; the burner 3 comprises a gas inlet 301, a combustion-supporting air inlet 302 and a hot air outlet 303; the hot air outlet 303 is connected with a hot air inlet 4101; the ignition gun 2 is arranged at the gas inlet 301; the main gas pipeline comprises a main pipeline 16, a first pressure gauge 14, a filter 5, a first pressure regulating valve 6, a main metal shut-off valve 7, an auxiliary metal shut-off valve 8 and a proportional regulating valve 9; the main pipeline 16 comprises a first air inlet and a first air outlet, and the first air outlet is connected with the fuel gas inlet 301; the first pressure gauge 14, the filter 5, the first pressure regulating valve 6, the main metal shut-off valve 7, the auxiliary metal shut-off valve 8 and the proportion regulating valve 9 are arranged on the main pipeline 16 and distributed in the direction from the first air inlet to the first air outlet; the small-fire gas pipeline comprises an auxiliary pipeline 18, a second pressure regulating valve 10, a first electromagnetic valve 11, a second electromagnetic valve 12 and a leakage detector 13; the auxiliary pipeline 18 comprises a second air inlet 1801 and a second air outlet 1802, the second air outlet 1802 is connected with the fuel gas inlet 301, and the second air inlet 1801 is arranged on the main pipeline 16 and is positioned between the first pressure gauge 14 and the filter 5; the combustion-supporting pipeline comprises a combustion-supporting pipeline and a combustion-supporting fan 1; the combustion-supporting pipeline comprises a third air inlet 1901 and a third air outlet 1902, and the third air outlet 1902 is connected with the combustion-supporting air inlet 302; the combustion fan 1 is disposed in the combustion-supporting pipeline and located between the third air inlet 1901 and the third air outlet 1902.
Wherein, the calibers of the hot air inlet 4101 of the hot air furnace 4 and the hot air outlet 303 of the burner 3 can be the same or different; the hot air inlet 4101 and the hot air outlet 303 may be directly connected or may be connected by a pipe. As shown in fig. 3-4, a natural wind inlet 411 is formed on the main body 41 of the hot blast stove 4, the natural wind inlet 411 is located at the hot blast inlet 4101, and the number of the natural wind inlets 411 may be multiple and may be distributed uniformly. The natural wind inlet 411 may be a circular hole. The body 41 of the hot blast stove 4 is provided with an air inlet adjusting ring 42, and the air inlet adjusting ring 42 is sleeved at the natural air inlet 411 of the body 41, is movably connected with the body 41 and can slide along the circumferential direction of the body 41; the air inlet adjusting ring 42 is provided with an adjusting hole 421, the shape and size of the adjusting hole 421 are the same as those of the natural air inlet 411, the opening direction of the adjusting hole 421 is consistent with the opening direction of the natural air inlet 411, the overlapping degree of the adjusting hole 421 and the natural air inlet 411 changes through the sliding of the adjusting ring in the circumferential direction, the manual adjustment of the secondary natural air volume is realized, and compared with an independent hot air inlet 4101, the air distribution is more uniform. The air inlet adjusting ring 42 is composed of two semicircular ring plates, wherein one semicircular ring plate is provided with an adjusting hole 421; the two semicircular plates are detachably connected, for example, by bolts.
The first air outlet of the main pipeline 16 and the second air outlet 1802 of the auxiliary pipeline 18 are both connected with the gas inlet 301. The method can be realized by the following steps: the gas inlet 301 is connected with a tee joint; the tee joint comprises a first inlet, a second inlet and a third outlet; the third outlet is connected with the gas inlet 301, and the first inlet and the second inlet are respectively connected with the first air outlet and the second air outlet 1802. Or, a transition pipeline is connected to the gas inlet 301, the outlet of the transition pipeline is connected to the gas inlet 301, the inlet of the transition pipeline is connected to the first gas outlet, and the second gas outlet 1802 is arranged on the transition pipeline; or the inlet of the transition duct is connected to a second air outlet 1802, and the first air outlet is opened in the transition duct.
The ignition gun 2 can adopt any one of the existing ignition guns 2; the burning torch 2 is disposed at the gas inlet 301, and specifically, may be disposed at a tee joint or a transition pipe for connecting the first gas outlet, the second gas outlet 1802 and the gas inlet 301. The first pressure gauge 14 may be any one of existing pressure gauges for measuring gas pressure, such as a bourdon tube pressure gauge, a diaphragm pressure gauge, an electromechanical pressure gauge, an electronic pressure gauge, and the like. The filter 5 may be any filter 5 for filtering solid impurities in the gas, such as a filter paper filter 5, a fiber layer filter 5, or a foam filter 5. Any conventional pressure regulating valve for regulating the gas pressure, such as a diaphragm pressure regulating valve, can be used for the first pressure regulating valve 6 and the second pressure regulating valve 10. The main metal cut-off valve 7 and the auxiliary metal cut-off valve 8 are respectively interlocked with a high-pressure switch and a low-pressure switch inside the main metal cut-off valve, and the main metal cut-off valve and the auxiliary metal cut-off valve play a role in automatic gas cut-off protection when the gas pressure is too high or too low. The proportional control valve 9 is used for proportionally adjusting the air inflow according to the outlet temperature of the hot blast stove 4. The first electromagnetic valve 11 and the second electromagnetic valve 12 have the same function as a metal shut-off valve in the main pipeline, and any one of the existing electromagnetic valves capable of achieving the purpose, such as a gas emergency shut-off electromagnetic valve, can be adopted. The leakage detector 13 is used for detecting whether a gas leakage occurs, and any one of the existing detectors, such as a detector with standard configuration, a detector with an LCD field display module, a detector with a field explosion-proof acousto-optic alarm lamp or a detector with an LCD field display module and a field explosion-proof acousto-optic alarm lamp, can be adopted. The combustion-supporting fan 1 is used for providing oxygen for the combustion of natural gas, and the excess coefficient of air is controlled to be about 1.1 during combustion; any of the existing, e.g. conventional centrifugal fans, may be used.
As a specific implementation manner, the above-mentioned high-efficiency stable gas hot blast stove system may further include a nitrogen purging protection pipeline 17, where the nitrogen purging protection pipeline 17 includes a nitrogen inlet 1701, a nitrogen outlet 1702 and a second pressure gauge 15; the nitrogen outlet 1702 is arranged between the main pipe 16 and the first pressure gauge 14 and the second air inlet 1801; a second pressure gauge 15 is provided between the nitrogen inlet 1701 and the nitrogen outlet 1702. That is, the nitrogen purge protection line 17 is connected between the main line 16, the first pressure gauge 14 and the filter 5. Before the ignition of the system, nitrogen can enter the main pipeline 16 through the nitrogen purging protection pipeline 17 and then enter the combustor 3 and the hot blast stove 4, and nitrogen purging is carried out on the main pipeline 16, the combustor 3 and the hot blast stove 4, so that the safety of the system is ensured. The second pressure gauge 15 may be any one of existing pressure gauges for measuring gas pressure, such as a bourdon tube pressure gauge, a diaphragm pressure gauge, an electromechanical pressure gauge, and an electronic pressure gauge.
As a specific embodiment, as shown in fig. 2, the hot blast stove 4 of the above-mentioned high-efficiency stable gas hot blast stove system may further include a temperature control meter, an ultraviolet detector 45, an insulating layer 43 and a support leg 44; the temperature control meter is arranged at the air outlet of the body 41; the temperature control meter is in communication connection with the proportional control valve 9; the ultraviolet detector 45 is disposed on the outer surface of the body 41; the heat-insulating layer 43 is coated on the outer surface of the body 41; the legs 44 are provided at a lower portion of the body 41. The temperature control meter is used for setting the temperature required by the hot blast stove 4, is interlocked with the proportional control valve 9 on the main gas pipeline, controls the combustion temperature through the opening degree of the proportional control valve 9, and can adopt any one of the conventional temperature control meters, such as a Honeyville temperature control meter; the ultraviolet detector 45 is used for monitoring the flame inside the hot blast stove 4, if the flame signal cannot be detected for a long time, the input of fuel gas is stopped, and flash explosion is prevented, and any one of the conventional ultraviolet detectors, such as a Honeywell UV detector, can be adopted; the insulating layer 43 can be made of any existing insulating material, for example, a ceramic fiber blanket insulating layer 43; the supporting legs 44 are used for supporting the hot blast stove 4, and any supporting member which can support the hot blast stove 4 can be adopted, and can be in any shape; the number may be determined according to the supporting ability of the support.
As a specific embodiment, the above-mentioned high-efficiency stable gas hot air furnace system may further comprise an electric control valve 34, and the electric control valve 34 is disposed at the combustion air inlet 302. The electric control valve 34 functions to adjust the amount of air required for combustion.
The control relation of the high-efficiency stable gas hot blast stove system is as follows:
-controlling the opening of the gas proportional control valve 9 according to the outlet temperature of the hot blast stove 4.
The opening degree of the combustion air adjusting valve is adjusted according to the opening degree of the proportional adjusting valve 9.
When the gas pressure is too high or too low, the metal cut-off valves (including the main metal cut-off valve 7 and the auxiliary metal cut-off valve 8) are automatically cut off for protection.
The working process of the high-efficiency stable gas hot blast stove system comprises the following steps:
and (3) ignition: and checking the gas pipeline system to determine the gas pipeline system is normal. After the pressure of the main gas pipeline reaches and stabilizes, the ignition gun 2 is put in place. Firstly, switching on an igniter power supply, turning on an igniter ignition switch, then, starting a small fire gas pipeline valve, and igniting an ignition gas gun, wherein a flame detector should verify that fire exists; then, a valve of the main gas pipeline is opened, natural gas is ignited, a flame detector is used, and the combustor 3 is ignited successfully after the flame of the gas is stable.
If the ignition fails, the valves of the main gas pipeline and the small-fire gas pipeline are immediately closed (manual on-site operation or remote operation of a program control cabinet), and meanwhile, the diffusion valve of the hot blast stove 4 is opened, so that unburned gas in the hot blast stove 4 is completely removed, otherwise, the ignition is not performed again, and the explosion is avoided. The nitrogen in the hearth is purged for at least 10-15 minutes.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A high efficiency stable gas hot air furnace system, comprising:
the hot blast stove comprises a body and an air inlet adjusting ring; the body comprises a hot air inlet and a natural air inlet; the natural wind inlet is arranged on the body; the air inlet adjusting ring is arranged at the natural air inlet and used for adjusting the opening size of the natural air inlet;
the burner comprises a gas inlet, a combustion-supporting air inlet and a hot air outlet; the hot air outlet is connected with the hot air inlet;
the ignition gun is arranged at the gas inlet;
the main gas pipeline comprises a main pipeline, a first pressure gauge, a filter, a pressure regulating valve, a main metal cut-off valve, an auxiliary metal cut-off valve and a proportion regulating valve; the main pipeline comprises a first air inlet and a first air outlet, and the first air outlet is connected with the fuel gas inlet; the first pressure gauge, the filter, the pressure regulating valve, the main metal shut-off valve, the auxiliary metal shut-off valve and the proportion regulating valve are arranged on the main pipeline and distributed in the direction from the first air inlet to the first air outlet;
a small-fire gas pipeline comprising an auxiliary pipeline, a pressure regulating valve, a first solenoid valve, a second solenoid valve and a leakage detector; the auxiliary pipeline comprises a second air inlet and a second air outlet, the second air outlet is connected with the fuel gas inlet, and the second air inlet is arranged on the main pipeline and is positioned between the first pressure gauge and the filter; and the number of the first and second groups,
the combustion-supporting pipeline comprises a combustion-supporting pipeline and a combustion-supporting fan; the combustion-supporting pipeline comprises a third air inlet and a third air outlet, and the third air outlet is connected with the combustion-supporting air inlet; and the combustion-supporting fan is arranged in the combustion-supporting pipeline and is positioned between the third air inlet and the third air outlet.
2. The efficient and stable gas hot blast stove system according to claim 1, further comprising a nitrogen purging protection line comprising a nitrogen inlet, a nitrogen outlet and a second pressure gauge; the nitrogen outlet is arranged between the main pipeline and the first pressure gauge and between the first air inlet and the second air inlet; the second pressure gauge is arranged between the nitrogen inlet and the nitrogen outlet.
3. The efficient and stable gas hot blast stove system according to claim 1, wherein the hot blast stove comprises a temperature control meter disposed at an air outlet of the body; and the temperature control meter is in communication connection with the proportional control valve.
4. The high efficiency, stable gas hot blast stove system according to claim 1, further comprising an ultraviolet flame monitor disposed on an outer surface of the body.
5. The efficient and stable gas hot blast stove system according to claim 1, further comprising an insulation layer coated on an outer surface of the body.
6. The efficient and stable gas hot blast stove system according to claim 1, further comprising legs disposed at a lower portion of the body.
7. The efficient and stable gas hot blast stove system according to claim 1, further comprising an electric regulating valve provided at a combustion air inlet.
8. The efficient and stable gas hot air furnace system according to claim 1, wherein the air inlet adjusting ring is annular, is sleeved at a natural air inlet of the body, and is movably connected with the body; the air inlet adjusting ring is provided with an adjusting hole.
9. The efficient and stable gas hot blast stove system according to claim 8, wherein the shape and size of said regulating hole is the same as the shape and size of the natural wind inlet.
10. The efficient and stable gas hot blast stove system according to claim 8, wherein the air intake adjusting ring is composed of two semicircular ring plates, and one of the semicircular ring plates is provided with an adjusting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220307679.9U CN216716573U (en) | 2022-02-16 | 2022-02-16 | High-efficient gas hot-blast furnace system of stabilizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220307679.9U CN216716573U (en) | 2022-02-16 | 2022-02-16 | High-efficient gas hot-blast furnace system of stabilizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216716573U true CN216716573U (en) | 2022-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220307679.9U Active CN216716573U (en) | 2022-02-16 | 2022-02-16 | High-efficient gas hot-blast furnace system of stabilizing |
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| Country | Link |
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| CN (1) | CN216716573U (en) |
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2022
- 2022-02-16 CN CN202220307679.9U patent/CN216716573U/en active Active
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