A car bottom heat treatment furnace for improving the calorific value of coal gas

Abstract

This utility model relates to the field of heat treatment furnace technology and discloses a car-bottom type heat treatment furnace for improving the calorific value of coal gas. It includes a furnace body, with a support rail fixedly installed at the bottom of the inner wall of the furnace body. A support plate is slidably connected to the top surface of the support rail. Electric heaters are symmetrically fixedly installed at the middle of the inner walls on both sides of the furnace body. This car-bottom type heat treatment furnace for improving the calorific value of coal gas preheats the furnace body through the electric heaters. Fuel and coal gas are simultaneously input into the tube, and a high-speed motor drives blades to rotate at high speed, feeding high-speed gas into the tube. The high-speed gas effectively mixes the fuel and coal gas together, and while dispersing the mixture in the shell, it also disturbs the surface area for combustion reaction. When the mixed gas is output from the injection boss, an igniter ignites the mixed gas, resulting in a higher calorific value compared to burning coal gas alone. The temperature inside the furnace body is preheated by the electric heaters, reducing the heat energy consumption of the mixed gas.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment furnaces, in particular to a vehicle bottom type heat treatment furnace for improving the calorific value of coal gas. Background Art

[0002] A car bottom heat treatment furnace is a type of equipment used for heat treatment of metals. It usually consists of a furnace with a platform or a car bottom. The main advantage of a car bottom heat treatment furnace is that it is easy to operate and is suitable for processing larger and heavy workpieces. In addition, it can also be applied to different types of heat treatment processes such as annealing, quenching, tempering, etc. During the heat treatment process, the workpiece can be heated and cooled in a controlled manner in the furnace through the heating and cooling system. These devices are widely used in the metal manufacturing and processing industry to improve the mechanical properties and performance of metal workpieces.

[0003] Car bottom heat treatment furnaces usually use the following methods to heat the workpiece: Electric heating: Use resistance heaters or electric heating elements to generate heat energy. Electric current passes through the heater or element to produce a resistance heating effect, thereby transferring heat energy to the workpiece; Gas heating: Use gas as a heat source, such as coal gas. The heat energy generated by the combustion of the gas is transferred to the workpiece in the furnace; Refractory heating: Refractory materials, such as infrared radiation, are used inside the heat treatment furnace to heat the workpiece. The refractory material absorbs electrical energy and converts the heat energy into infrared radiation, and the workpiece absorbs the radiation to heat;

[0004] At present, most car bottom heat treatment furnaces usually use gas heating, but gas heating is affected by many factors, such as furnace structure, combustion control and heat conduction, etc. The poor combustion process leads to energy waste and reduced energy utilization efficiency. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a vehicle-bottom heat treatment furnace for improving the calorific value of coal gas. The utility model has the function of heating the furnace body in advance through an electric heater, inputting fuel and coal gas into a pipe body at the same time, and driving the blades to rotate at high speed through a high-speed motor to send high-speed gas into the pipe body. The high-speed gas effectively mixes the fuel and coal gas together, and disturbs the fuel and coal gas mixed gas shell while dispersing it, thereby increasing the surface area of ​​the combustion reaction. When the mixed gas is output from the injection boss, the igniter ignites the mixed gas, thereby increasing the combustion rate of the mixed gas particles of the coal gas and fuel, increasing the release of more heat, and having a higher calorific value than burning coal gas alone. The temperature in the furnace body is heated in advance by the electric heater, thereby reducing the thermal energy consumption of the mixed gas, increasing energy utilization efficiency, and reducing energy waste. The high-speed intake gas passes through the high-speed motor when entering the pipe body, thereby increasing the combustion efficiency while dissipating the heat of the high-speed motor, thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a car-bottom heat treatment furnace for improving the calorific value of coal gas, comprising a furnace body, a furnace door slidably connected to the front of the furnace body through a guide rail, a support rail fixedly installed at the bottom of the inner wall of the furnace body, a support plate slidably connected to the top surface of the support rail, electric heaters symmetrically fixedly installed at the middle ends of the inner walls on both sides of the furnace body, and the electric heaters are located directly above the support plate, connecting blocks symmetrically fixedly installed at the top ends of the inner walls on both sides of the furnace body, a feeding pipe is arranged in the connecting block, a plurality of coal gas feeding structures are equidistantly fixedly installed inside the connecting block, and the coal gas feeding structures are provided with a plurality of , and multiple gas feeding structures are connected in series through a feeding pipe, the gas feeding structure consists of a pipe body, a high-speed motor, a rotating shaft, blades, an outer ring, a connecting slide groove, an injection boss, a fuel injection nozzle and an air injection nozzle, the pipe body is fixedly installed inside the connecting block, and the pipe body runs through the entire connecting block, the tail end of the pipe body extends out of the top of the furnace body, the head end of the pipe body extends out of the front of the connecting block, the middle end of the tail end of the pipe body is fixedly installed with a high-speed motor, the output end of the high-speed motor runs through the tail end of the pipe body and extends to the inside of the pipe body, the output end of the high-speed motor is fixedly installed with a rotating shaft, and a plurality of blades are fixedly installed at equal intervals on the outer wall of the rotating shaft.

[0009] As a preferred technical solution of the utility model, a plurality of connecting grooves are equidistantly arranged on the inner wall of the tube body, the end points of the blades are fixedly connected to the inner wall of the outer ring, and the outer ring is slidably connected to the connecting grooves.

[0010] As a preferred technical solution of the utility model, a fuel injector and an air jet are symmetrically fixedly installed on the middle end of the outer wall of the tube body, the central axis of the fuel injector is perpendicular to the central axis of the air jet, a plurality of the fuel injectors are connected in series through a feeding pipe, a plurality of air jets are connected in series through a feeding pipe, and each connecting block is connected to two feeding pipes, which respectively connect the air jet and the fuel injector in series.

[0011] As a preferred technical solution of the utility model, an injection boss is fixedly installed at the head end of the tube body, the inner diameter of the input end of the injection boss is larger than the inner diameter of the output end of the injection boss, and the output end of the injection boss faces the middle end of the furnace body, and a plurality of igniters are fixedly installed inside the output end of the injection boss, and the ignition end of the igniter faces the inside of the output end of the injection boss.

[0012] As a preferred technical solution of the utility model, a plurality of air inlets are provided in a circular array at the rear end of the tube body, and the air inlets are distributed in a circular array around the high-speed motor.

[0013] Compared with the prior art, the utility model provides a car bottom heat treatment furnace for improving the calorific value of coal gas, which has the following beneficial effects:

[0014] The utility model heats the furnace body in advance through an electric heater, inputs the fuel and the coal gas into the pipe body at the same time, and drives the blades to rotate at a high speed through a high-speed motor to send high-speed gas into the pipe body. The high-speed gas effectively mixes the fuel and the coal gas, and is disturbed while dispersing the fuel and coal gas mixed gas shell, thereby increasing the surface area of ​​the combustion reaction. When the mixed gas is output from the injection boss, the igniter ignites the mixed gas, thereby increasing the combustion rate of the mixed gas particles of the coal gas and the fuel, increasing and releasing more heat, and having a higher calorific value than burning the coal gas alone. The temperature in the furnace body is heated in advance by the electric heater, thereby reducing the heat energy consumption of the mixed gas, increasing the energy utilization efficiency, and reducing energy waste. The high-speed intake gas is used to pass through the high-speed motor when entering the pipe body, thereby increasing the combustion efficiency and dissipating the heat of the high-speed motor at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side cross-sectional schematic diagram of the overall structure of the utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the gas feeding structure of the utility model;

[0018] Figure 4 It is a rear view schematic diagram of the gas feeding structure of the utility model;

[0019] Figure 5 It is a side cross-sectional schematic diagram of the gas feeding structure of the utility model;

[0020] Figure 6 It is a three-dimensional side sectional view of the gas feeding structure of the utility model.

[0021] Among them: 1. furnace body; 2. furnace door; 3. support plate; 4. heater; 5. connection block; 6. feeding pipe; 7. gas feeding structure; 701. pipe body; 702. high-speed motor; 703. rotating shaft; 704. blades; 705. outer ring; 706. connecting slide; 707. injection boss; 708. fuel injection nozzle; 709. air injection nozzle. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-6 A car bottom heat treatment furnace for improving the calorific value of coal gas, the heat treatment furnace comprises a furnace body 1, a guide rail is fixedly installed on the front of the furnace body 1, a furnace door 2 is slidably connected in the guide rail, and the furnace door 2 is completely fitted with the front of the furnace body 1, and the furnace door 2 is controlled to be opened and closed by sliding in the guide rail;

[0026] Electric heaters 4 are fixedly installed on the inner walls of both sides of the furnace body 1, and the two electric heaters 4 are symmetrical to each other. By starting the electric heaters 4 before practical coal heating, the interior of the furnace body 1 is preheated in advance, thereby reducing the time for the coal combustion to heat the temperature inside the furnace body;

[0027] A connection block 5 is symmetrically fixedly installed on the top of the inner wall of the furnace body 1. A plurality of gas feeding structures 7 are equidistantly fixedly installed in the connection block 5. The plurality of gas feeding structures 7 are fixed inside the furnace body 1 through the connection block 5. A plurality of feeding pipes 6 are fixedly installed in the connection block 5. The feeding pipes 6 connect the plurality of gas feeding structures 7 in series, and two feeding pipes 6 are arranged in each connection block 5. The feeding pipes 6 extend from the furnace body 1. One end of the feeding pipe 6 located outside the furnace body 1 is respectively connected to the output end of the gas delivery device, and the other feeding pipe 6 is connected to the output end of the fuel delivery device, so that the gas and fuel are simultaneously delivered to the gas feeding structure 7;

[0028] The coal gas feeding structure 7 mentioned above includes a pipe body 701, a high-speed motor 702, a rotating shaft 703, blades 704, an outer ring 705, a connecting slide groove 706, an injection boss 707, an oil injection nozzle 708 and an air injection nozzle 709. The pipe body 701 is fixedly installed inside the connecting block 5. There are a plurality of pipe bodies 701, and the number of pipe bodies 701 installed in the two connecting blocks 5 is the same. The pipe body 701 runs through the entire connecting block 5. The tail end of the pipe body 701 extends out of the top of the furnace body 1, and the head end of the pipe body 701 extends out of the front of the connecting block 5. A high-speed motor 702 is fixedly installed at the middle end of the tail end of the tube body 701, and the output end of the high-speed motor 702 extends through the tail end of the tube body 701 to the inside thereof. A rotating shaft 703 is fixedly installed at the output end of the high-speed motor 702, and a plurality of blades 704 are fixedly installed on the outer wall of the rotating shaft 703 at equal intervals. The end points of the blades 704 are fixedly connected to the inner wall of the outer ring 705. A plurality of connecting grooves 706 are evenly opened on the inner wall of the tube body 701, and the outer ring 705 is slidably connected to the connecting grooves 706. When the output end of the high-speed motor 702 rotates at high speed, The blades 704 and the outer ring 705 are driven to rotate at high speed, generating high-speed airflow. A fuel injector 708 and an air jet 709 are symmetrically fixedly installed at the middle end of the outer wall of the tube body 701. The central axis of the fuel injector 708 and the central axis of the air jet 709 are perpendicular to each other. The input ends of the multiple fuel injectors 708 are connected in series with the feed pipe 6, and the input ends of the multiple air jets 709 are connected in series with another feed pipe 6. When the feed pipe 6 injects the fuel and the gas into the tube body 701 through the fuel injector 708 and the air jet 709, the gas and the fuel are mixed. The high-speed airflow generated by the high-speed rotation of the blades 704 mixes the coal gas and the fuel oil and sends them out of the tube body 701 at a high speed. The first end of the tube body 701 is equipped with an injection boss 707. The inner diameter of the input end of the injection boss 707 is larger than the inner diameter of the output end thereof, thereby increasing the speed at which the gas and the fuel oil mixed gas is output from the tube body 701. At the same time, a plurality of igniters are fixedly installed on the inner wall of the output end of the injection boss 707. The gas and the fuel oil mixed gas is ignited by the igniters and injected toward the furnace body 1, thereby heating the inside of the furnace body 1.

[0029] The tail end of the tube body 701 is provided with a plurality of air inlets, which are arranged in a circular array at the tail end of the tube body 701 and are arranged in a circular array around the high-speed motor 702. The air inlets deliver the air outside the furnace body 1 into the tube body 701 through the high-speed rotation of the blades 704. When the air is introduced at a high speed, the mixing degree of the mixed gas of the coal gas and the fuel with the air can be increased, so that the mixed gas of the coal gas and the fuel and the oxygen are better mixed together, which can improve the flammability of the fuel and make it easier for it to react chemically with oxygen. The mixed gas of the coal gas and the fuel and the combustion products can be quickly taken away by the high-speed air introduction, so that the combustion The reaction is more rapid and complete, and the airflow introduced by the high-speed intake will produce an impact effect, which will disperse and disturb the particles of the mixed gas of gas and fuel, increase the surface area of ​​the combustion reaction, and improve the combustion rate of the mixed gas particles of gas and fuel. Increasing the combustion rate of the mixed gas of gas and fuel can increase the release of more heat, so that it has a higher calorific value than burning gas alone, increases energy utilization efficiency, and reduces energy waste. In addition, when the high-speed intake gas enters the tube body 701, it passes around the high-speed motor 702, which can increase the combustion efficiency while dissipating the heat of the high-speed motor 702.

[0030] The furnace body is heated in advance by the electric heater 4, and the fuel and coal gas are simultaneously input into the pipe body 701, and the high-speed motor 702 drives the blades to rotate at a high speed to send high-speed gas into the pipe body 701. The high-speed gas effectively mixes the fuel and coal gas together, and the fuel and coal gas mixed gas shell is disturbed while being dispersed, thereby increasing the surface area of ​​the combustion reaction. When the mixed gas is output from the injection boss 707, the igniter ignites the mixed gas, thereby increasing the combustion rate of the mixed gas particles of the coal gas and fuel, and increasing more heat release. Compared with the combustion of coal gas alone, it has a higher calorific value. The temperature in the furnace body 1 is heated in advance by the electric heater 4, thereby reducing the thermal energy consumption of the mixed gas, increasing the energy utilization efficiency, and reducing energy waste. The high-speed intake gas is used to pass around the high-speed motor 702 when entering the pipe body 701, thereby increasing the combustion efficiency and dissipating the heat of the high-speed motor 702.

[0031] In addition, a support rail is installed at the bottom end of the inner wall of the furnace body 1, and a support plate 3 is slidably connected to the top surface of the support rail, so that the metal material to be heated can be placed on the support plate 3 and sent into the furnace body 1 for heating.

[0032] When in use, before heating the metal material, the metal material is first placed on the support plate 3, and the support plate 3 is sent into the furnace body 1, and the furnace door 2 is closed, and the electric heater 4 is started. The electric heater 4 heats the furnace body 1 in advance. When the temperature in the furnace body 1 reaches the maximum heating temperature of the electric heater 4, the high-speed motor 702 is started. At the same time, the feeding pipe 6 sends the gas and fuel into the tube body 701 through the air nozzle 709 and the fuel nozzle 708 respectively. The high-speed motor 702 drives the blade 704 to rotate at a high speed, and sends high-speed gas into the tube body 701, fully mixes the fuel and gas, and sprays them into the furnace body 1 through the injection boss 707. When the mixed gas passes through the injection boss 707, it is ignited by the igniter installed inside its output end, and the mixed gas is ignited, so that the burning mixed gas is sent into the furnace body 1 to heat the metal material.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A car-bottom heat treatment furnace for improving the calorific value of coal gas, comprising a furnace body (1), a furnace door (2) being slidably connected to the front of the furnace body (1) via a guide rail, a support rail being fixedly mounted on the bottom end of the inner wall of the furnace body (1), and a support plate (3) being slidably connected to the top surface of the support rail, characterized in that: An electric heater (4) is symmetrically fixedly installed at the middle end of the inner wall on both sides of the furnace body (1), and the electric heater (4) is located directly above the support plate (3). A connection block (5) is symmetrically fixedly installed at the top end of the inner wall on both sides of the furnace body (1). A feed pipe (6) is arranged in the connection block (5). A plurality of gas feeding structures (7) are equidistantly fixedly installed inside the connection block (5). A plurality of gas feeding structures (7) are arranged, and the plurality of gas feeding structures (7) are connected in series through the feed pipe (6). The gas feeding structure (7) comprises a pipe body (701), a high-speed motor (702), a rotating shaft (703), blades (704), an outer ring (705), a connecting slide groove (706), and an injection boss ( The invention relates to a furnace body (701) and a furnace body (5). The furnace body (701) is composed of a fuel injection nozzle (707), a fuel injection nozzle (708) and an air injection nozzle (709), wherein the tube body (701) is fixedly installed inside the connecting block (5), and the tube body (701) passes through the entire connecting block (5); the tail end of the tube body (701) extends out of the top of the furnace body (1), and the head end of the tube body (701) extends out of the front of the connecting block (5); a high-speed motor (702) is fixedly installed at the middle end of the tail end of the tube body (701); the output end of the high-speed motor (702) passes through the tail end of the tube body (701) and extends to the inside of the tube body (701); a rotating shaft (703) is fixedly installed at the output end of the high-speed motor (702), and a plurality of blades (704) are fixedly installed at equal intervals on the outer wall of the rotating shaft (703).

2. A car bottom heat treatment furnace for increasing the calorific value of coal gas according to claim 1, characterized in that: The inner wall of the tube body (701) is provided with a plurality of connecting grooves (706) at equal intervals, the end points of the blades (704) are fixedly connected to the inner wall of the outer ring (705), and the outer ring (705) is slidably connected to the connecting grooves (706).

3. A car bottom heat treatment furnace for increasing the calorific value of coal gas according to claim 1, characterized in that: A fuel injector (708) and an air jet (709) are symmetrically fixedly mounted on the middle end of the outer wall of the tube body (701); the central axis of the fuel injector (708) and the central axis of the air jet (709) are perpendicular to each other; a plurality of fuel injectors (708) are connected in series via a feed pipe (6); a plurality of air jets (709) are connected in series via a feed pipe (6); and each connecting block (5) is connected to two feed pipes (6), respectively connecting the air jet (709) and the fuel injector (708) in series.

4. A car bottom type heat treatment furnace for increasing the calorific value of coal gas according to claim 1, characterized in that: An injection boss (707) is fixedly mounted on the front end of the tube body (701); the inner diameter of the input end of the injection boss (707) is larger than the inner diameter of the output end of the injection boss, and the output end of the injection boss (707) faces the middle end of the furnace body (1); a plurality of igniters are fixedly mounted inside the output end of the injection boss (707), and the ignition ends of the igniters face the inside of the output end of the injection boss (707).

5. The vehicle bottom type heat treatment furnace for improving the calorific value of coal gas according to claim 1, characterized in that: The rear end of the tube body (701) is provided with a plurality of air inlets in a circular array, and the air inlets are distributed in a circular array around the high-speed motor (702).

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