A carbon potential control device

Abstract

The utility model relates to carbon potential control technical field especially relates to a kind of carbon potential control device.The carbon potential control device includes temperature control carbon control integrated cabinet, furnace body and furnace cover, temperature control carbon control integrated cabinet is set in the side of furnace body, and controller is inlaid in temperature control carbon control integrated cabinet, and temperature control carbon control integrated cabinet's cabinet door is inlaid with touch display screen, and touch display screen is electrically connected with controller;Temperature control module, for controlling the temperature control module of furnace body inner chamber upper and lower two parts temperature is installed on furnace body, and is electrically connected with controller;Carbon control module, for controlling the carbon control module of furnace body inside carbon potential is installed on furnace cover, and carbon control module includes oxygen probe, drip tube, sample exhaust pipe and CO infrared sensor, oxygen probe, drip tube and sample exhaust pipe are all inlaid on furnace cover, and the two gas inlet ends of oxygen probe are respectively communicated with reference flowmeter and carbon burning flowmeter by duct.The carbon potential control device provided by the utility model has the advantages of uniform carburizing control precision.

Description

Technical Field

[0001] This utility model relates to the field of carbon potential control technology, and in particular to a carbon potential control device. Background Technology

[0002] A carburizing furnace is an industrial furnace that uses a chemical heat treatment method to diffuse carbon atoms into the surface layer of low-carbon or medium-carbon steel workpieces. Its core purpose is to significantly improve the surface hardness, wear resistance, and fatigue strength while maintaining good toughness in the core of the workpiece.

[0003] Carbon potential control in a carburizing furnace is a crucial part of the carburizing process. Existing carbon potential control in carburizing furnaces mainly relies on sensors such as oxygen probes to monitor furnace gas in real time. The carbon potential controller performs intelligent calculations and makes decisions by adjusting the flow rates of enrichment gas and air. When controlling carbon potential, the carbon potential controller needs to coordinate with three gases: carbon-reducing gas, reference gas, and carbon-burning gas. The feedback of existing carbon potential control devices mainly depends on the detection accuracy of oxygen probes, which is relatively simple and cannot achieve high-precision carbon control or synchronous temperature control of the carburizing furnace.

[0004] Therefore, it is necessary to provide a new carbon potential control device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a carbon potential control device.

[0006] The carbon potential control device provided by this utility model includes: an integrated temperature and carbon control cabinet, a furnace body and a furnace cover. The integrated temperature and carbon control cabinet is located on one side of the furnace body, and a controller is embedded in the integrated temperature and carbon control cabinet. A touch screen is embedded on the cabinet door of the integrated temperature and carbon control cabinet, and the touch screen is electrically connected to the controller.

[0007] A temperature control module, used to control the temperature of the upper and lower parts of the furnace cavity, is installed on the furnace body and electrically connected to the controller;

[0008] A carbon control module, used to control the carbon potential inside the furnace body, is installed on the furnace cover. The carbon control module includes an oxygen probe, a drip pipe, a sample exhaust pipe, and a CO infrared sensor. The oxygen probe, drip pipe, and sample exhaust pipe are all embedded in the furnace cover. The two inlet ends of the oxygen probe are respectively connected to a reference flow meter and a charcoal flow meter through conduits. The reference flow meter and the charcoal flow meter are connected to an air pump through conduits. A charcoal solenoid valve is installed on the conduit used to connect to the charcoal flow meter. The oxygen probe, reference flow meter, charcoal flow meter, and charcoal solenoid valve are all electrically connected to the controller. Two sets of CO infrared sensors are provided. Both sets of CO infrared sensors are electrically connected to the controller and are respectively embedded in the upper and lower halves of the furnace body cavity.

[0009] Preferably, the temperature control module includes an electric heating rod A, an electric heating rod B, and a thermocouple. The electric heating rod A and the electric heating rod B are respectively installed in the upper and lower halves of the furnace body cavity and are both electrically connected to the controller. There are two thermocouples, which are respectively installed at the upper and lower ends of one side of the furnace body and are both electrically connected to the controller.

[0010] Preferably, both electric heating rod A and electric heating rod B are arranged in a spiral shape inside the furnace.

[0011] Preferably, the top end of the drip tube is connected to a dilution gas pipe, a kerosene drip tube, and a methane drip tube. The dilution gas pipe is connected to a gas pump via a conduit, and a dilution solenoid valve and a dilution flow meter are installed on the conduit used to connect to the gas pump. The kerosene drip tube is connected to a kerosene storage tank via a conduit, and a kerosene solenoid valve is installed on the conduit used to connect to the kerosene storage tank. The methane drip tube is connected to a methane storage tank via a conduit, and a methane solenoid valve is connected on the conduit used to connect to the methane outlet storage tank.

[0012] Preferably, the dilution solenoid valve, kerosene solenoid valve, and methane solenoid valve are all installed on one side of the furnace body via a bracket, and the height difference between the dilution solenoid valve and the top of the dilution gas pipe, the kerosene solenoid valve and the top of the kerosene drip pipe, and the methane solenoid valve and the top of the methane drip pipe is greater than 10cm. The kerosene solenoid valve is located below the kerosene storage tank with a height difference greater than 20cm, and the methane solenoid valve is located below the methane storage tank with a height difference greater than 20cm.

[0013] Preferably, the top of the temperature and carbon control integrated cabinet is also equipped with an audible and visual alarm, which is electrically connected to the controller.

[0014] Compared with related technologies, the carbon potential control device provided by this utility model has the following beneficial effects:

[0015] 1. This utility model provides a carbon potential control device. By setting up a carbon control module, the carbon control module utilizes the cooperation of an oxygen probe, a reference flow meter, a charcoal flow meter, a charcoal solenoid valve, a drip pipe, a dilution gas pipe a, a dilution solenoid valve b, a dilution flow meter, a kerosene drip pipe a, a kerosene solenoid valve, a methane drip pipe a, a methane solenoid valve, a sample exhaust pipe, and a CO infrared sensor. Oxygen detection is combined with CO infrared compensation, and the flow meter is used to measure the three gases, thereby improving the carbon potential control accuracy of the entire carburizing process.

[0016] 2. By setting temperature control modules in the upper and lower parts of the furnace body's inner cavity, the temperature of the furnace body can be more accurately controlled during carburizing, which facilitates more uniform carburizing. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the carbon potential control device provided by this utility model;

[0018] Figure 2 Another structural schematic diagram of the carbon potential control device provided by this utility model;

[0019] Figure 3 A schematic diagram of the internal structure of the furnace body provided by this utility model;

[0020] Figure 4 A schematic diagram of carbon potential control for the carbon potential control device provided by this utility model;

[0021] Figure 5 A schematic diagram of the temperature control connection of the carbon potential control device provided by this utility model.

[0022] The diagram is labeled as follows: 1. Temperature and carbon control integrated cabinet; 11. Controller; 2. Furnace body; 3. Furnace cover; 4. Touch screen display; 5. Temperature control module; 51. Electric heating rod A; 52. Electric heating rod B; 53. Thermocouple; 6. Carbon control module; 61. Oxygen probe; 611. Reference flow meter; 612. Charcoal burning flow meter; 613. Charcoal burning solenoid valve; 62. Drip pipe; 621. Dilute gas pipe; 621a. Dilute solenoid valve; 621b. Dilute flow meter; 622. Kerosene drip pipe; 622a. Kerosene solenoid valve; 623. Methane drip pipe; 623a. Methane solenoid valve; 63. Sample exhaust pipe; 64. CO infrared sensor; 7. Audible and visual alarm. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] Please see Figures 1 to 5 The present invention provides a carbon potential control device, which includes: a temperature control and carbon control integrated cabinet 1, a furnace body 2 and a furnace cover 3. The temperature control and carbon control integrated cabinet 1 is disposed on one side of the furnace body 2, and a controller 11 is embedded in the temperature control and carbon control integrated cabinet 1. A touch screen display 4 is embedded on the cabinet door of the temperature control and carbon control integrated cabinet 1, and the touch screen display 4 is electrically connected to the controller 11.

[0026] Temperature control module 5, used to control the temperature of the upper and lower parts of the inner cavity of the furnace body 2, is installed on the furnace body 2 and electrically connected to the controller 11.

[0027] The carbon control module 6, used to control the carbon potential inside the furnace body 2, is installed on the furnace cover 3. The carbon control module 6 includes an oxygen probe 61, a drip pipe 62, a sample exhaust pipe 63, and a CO infrared sensor 64. The oxygen probe 61, drip pipe 62, and sample exhaust pipe 63 are all embedded in the furnace cover 3. The two air inlets of the oxygen probe 61 are respectively connected to a reference flow meter 611 and a charcoal flow meter 612 through conduits. The reference flow meter 611 and the charcoal flow meter 612 are connected to an air pump through conduits. A charcoal solenoid valve 613 is installed on the conduit used to connect to the charcoal flow meter 612. The oxygen probe 61, reference flow meter 611, charcoal flow meter 612, and charcoal solenoid valve 613 are all electrically connected to the controller 11. There are two sets of CO infrared sensors 64. Both sets of CO infrared sensors 64 are electrically connected to the controller 11. The two sets of CO infrared sensors 64 are respectively embedded in the upper and lower halves of the inner cavity of the furnace body 2.

[0028] The drip tube 62 is connected to a dilution gas tube 621, a kerosene drip tube 622, and a methane drip tube 623 at its top. The dilution gas tube 621 is connected to a gas pump via a conduit, and a dilution solenoid valve 621a and a dilution flow meter 621b are installed on the conduit used to connect to the gas pump. The kerosene drip tube 622 is connected to a kerosene storage tank via a conduit, and a kerosene solenoid valve 622a is installed on the conduit used to connect to the kerosene storage tank. The methane drip tube 623 is connected to a methane storage tank via a conduit, and a methane solenoid valve 623a is connected on the conduit used to connect to the methane outlet storage tank.

[0029] It should be noted that during use, the entire carbon potential control device is connected to the carburizing system during well seepage (the gas pump is connected to the reference flow meter 611, the charcoal flow meter 612, and the dilution flow meter 622b via pipelines to supply three gas lines; the kerosene drip pipe 622 is connected to the kerosene storage tank, and the methane drip pipe 623 is connected to the methane storage tank; a lifting mechanism is installed between the furnace cover 3 and the furnace body 2 to open the furnace cover 3 and connect various data and medium connection pipelines). After opening the furnace cover 3 and placing the workpiece into the furnace body 2, the process data (temperature, carbon potential, and carburizing time, etc.) for the carburizing operation are input into the controller 11 via the touch screen 4. Then, the controller 11 controls the temperature control module 5 to operate, maintaining the temperature inside the furnace body 2 within the set temperature range and adjusting it according to the needs of the reaction. During carburizing operations, an oxygen probe 61 is used to detect the internal oxygen content, and two upper and lower CO infrared sensors 64 are used to accurately measure the furnace gas inside the furnace body 2. After measurement, based on the feedback of the detected data, the flow rates of enriched gas and air are controlled to achieve precise, rapid, and stable automated control of the carbon potential inside the furnace. Specifically, when it is necessary to increase the carbon content, the charcoal burning solenoid valve 613 is opened, and the charcoal burning flow meter 612 is used for gas metering. Then, the kerosene solenoid valve 622a and the methane solenoid valve 623a are opened, and the carburizing agent is injected into the furnace body 2 through the drip pipe 62 to increase the carbon potential. When it is necessary to decrease the carbon potential, the dilution solenoid valve 621a is opened, and the dilution flow meter 621b is used for metering. A fixed amount of gas is introduced to dilute the inside, thereby reducing the carbon potential and achieving precise control of the carbon potential.

[0030] It should also be noted that the controller 11 here is an integrated controller, which includes a temperature regulator and temperature control instrument for temperature adjustment, as well as a PLC controller for collecting data from sensors and flow meters and controlling the opening of each solenoid valve according to the designed instructions. The specific integrated controller will not be described in detail here, as they are all control components commonly used in existing technologies.

[0031] In this embodiment, the dilution solenoid valve 621a, kerosene solenoid valve 622a, and methane solenoid valve 623a are all mounted on one side of the furnace body 2 via brackets. The height difference between the dilution solenoid valve 621a and the top of the dilution gas pipe 621, the kerosene solenoid valve 622a and the top of the kerosene drip pipe 622, and the methane solenoid valve 623a and the top of the methane drip pipe 623 is greater than 10cm. The kerosene solenoid valve 622a is located below the kerosene storage tank with a height difference greater than 20cm, and the methane solenoid valve 623a is located below the methane storage tank with a height difference greater than 20cm. This height difference facilitates the use of the liquid's own weight to drip kerosene and methane into the dripping pipe 62 using the kerosene solenoid valve 622a and the methane solenoid valve 622b.

[0032] In the embodiments of this utility model, please refer to Figures 1 to 5The temperature control module 5 includes an electric heating rod A51, an electric heating rod B52, and a thermocouple 53. The electric heating rod A51 and the electric heating rod B52 are respectively installed in the upper and lower halves of the inner cavity of the furnace body 2 and are both electrically connected to the controller 11. There are two thermocouples 53. The two thermocouples 53 are respectively installed at the upper and lower ends of one side of the furnace body 2 and are both electrically connected to the controller 11.

[0033] Among them, electric heating rod A51 and electric heating rod B52 are both arranged in a spiral shape inside the furnace body 2.

[0034] It should be noted that when using the temperature control module 5 for temperature control, electric heating rods A51 and B52 are used to heat the upper and lower halves of the inner cavity of the furnace body 2 respectively, and two thermocouples 53 are used to monitor the temperature of the upper and lower parts of the furnace body 2, which facilitates zoned temperature control and makes the temperature control of the furnace body 2 more detailed and precise.

[0035] In the embodiments of this utility model, please refer to Figures 1 to 5 The top of the temperature and carbon control integrated cabinet 1 is also equipped with an audible and visual alarm 7, which is electrically connected to the controller 11.

[0036] It should be noted that when the temperature control module 5 and the carbon control module 6 detect abnormal data and the automatic control fails, the audible and visual alarm 7 will issue a warning to remind the operator to stop the machine for maintenance.

[0037] The working principle of the carbon potential control device provided by this utility model is as follows:

[0038] In use, the entire carbon potential control device is connected to the carburizing system during well seepage. After opening the furnace cover 3 and placing the workpiece into the furnace body 2, the process data (temperature, carbon potential, and carburizing time, etc.) for the carburizing operation are input into the controller 11 via the touch screen 4. Then, the controller 11 controls the temperature control module 5 to operate, maintaining the temperature inside the furnace body 2 within the set temperature range and adjusting it according to the needs of the reaction. During the entire carburizing operation, the oxygen probe 61 is used to detect the internal oxygen content, and the upper and lower CO infrared sensors 64 are used to accurately measure the furnace gas inside the furnace body 2. After measurement, the data is processed according to the detected values. According to feedback, controlling the flow rate of enrichment gas and air enables precise, rapid, and stable automated control of the carbon potential inside the furnace. Specifically, when it is necessary to increase the carbon content, the charcoal solenoid valve 613 is opened, and the charcoal flow meter 612 is used for gas metering. Then, the kerosene solenoid valve 622a and the methane solenoid valve 623a are opened, and the carburizing agent is injected into the furnace body 2 through the drip pipe 62 to increase the carbon potential. When it is necessary to decrease the carbon potential, the dilution solenoid valve 621a is opened, and the dilution flow meter 621b is used for metering. A fixed amount of gas is introduced to dilute the interior, thereby reducing the carbon potential and achieving precise control of the carbon potential.

[0039] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A carbon potential control device, comprising: Temperature and carbon control integrated cabinet (1), furnace body (2) and furnace cover (3), wherein the temperature and carbon control integrated cabinet (1) is located on one side of the furnace body (2), and the temperature and carbon control integrated cabinet (1) is equipped with a controller (11), and the door of the temperature and carbon control integrated cabinet (1) is equipped with a touch screen (4), and the touch screen (4) is electrically connected to the controller (11); Its characteristic is that it further includes: Temperature control module (5), used to control the temperature of the upper and lower parts of the inner cavity of the furnace body (2), is installed on the furnace body (2) and electrically connected to the controller (11); A carbon control module (6) for controlling the carbon potential inside the furnace body (2) is installed on the furnace cover (3). The carbon control module (6) includes an oxygen probe (61), a drip tube (62), a sample exhaust pipe (63), and a CO infrared sensor (64). The oxygen probe (61), the drip tube (62), and the sample exhaust pipe (63) are all embedded in the furnace cover (3). The two inlet ends of the oxygen probe (61) are respectively connected to a reference flow meter (611) and a charcoal burning flow meter (612) through conduits. The reference flow meter (611) The oxygen probe (61) and the charcoal flow meter (612) are connected to an air pump via a conduit, and a charcoal solenoid valve (613) is installed on the conduit used to connect the charcoal flow meter (612). The oxygen probe (61), the reference flow meter (611), the charcoal flow meter (612) and the charcoal solenoid valve (613) are all electrically connected to the controller (11). The CO infrared sensor (64) is provided in two sets, and both sets of CO infrared sensors (64) are electrically connected to the controller (11). The two sets of CO infrared sensors (64) are respectively embedded in the upper half and the lower half of the inner cavity of the furnace body (2).

2. The carbon potential control device according to claim 1, characterized in that, The temperature control module (5) includes an electric heating rod A (51), an electric heating rod B (52), and a thermocouple (53). The electric heating rod A (51) and the electric heating rod B (52) are respectively installed in the upper and lower halves of the inner cavity of the furnace body (2) and are electrically connected to the controller (11). There are two thermocouples (53). The two thermocouples (53) are respectively installed at the upper and lower ends of one side of the furnace body (2) and are electrically connected to the controller (11).

3. The carbon potential control device according to claim 2, characterized in that, The electric heating rods A (51) and B (52) are both spirally arranged inside the furnace body (2).

4. The carbon potential control device according to claim 1, characterized in that, The top end of the drip tube (62) is connected to a dilution gas tube (621), a kerosene drip tube (622), and a methane drip tube (623). The dilution gas tube (621) is connected to a gas pump through a conduit, and a dilution solenoid valve (621a) and a dilution flow meter (621b) are installed on the conduit used to connect to the gas pump. The kerosene drip tube (622) is connected to a kerosene storage tank through a conduit, and a kerosene solenoid valve (622a) is installed on the conduit used to connect to the kerosene storage tank. The methane drip tube (623) is connected to a methane storage tank through a conduit, and a methane solenoid valve (623a) is connected on the conduit used to connect to the methane outlet storage tank.

5. The carbon potential control device according to claim 4, characterized in that, The dilution solenoid valve (621a), kerosene solenoid valve (622a), and methane solenoid valve (623a) are all mounted on one side of the furnace body (2) via brackets. The height difference between the dilution solenoid valve (621a) and the top of the dilution gas pipe (621), the kerosene solenoid valve (622a) and the top of the kerosene drip pipe (622), and the methane solenoid valve (623a) and the top of the methane drip pipe (623) is greater than 10cm. The kerosene solenoid valve (622a) is located below the kerosene storage tank with a height difference greater than 20cm, and the methane solenoid valve (623a) is located below the methane storage tank with a height difference greater than 20cm.

6. The carbon potential control device according to claim 1, characterized in that, The temperature and carbon control integrated cabinet (1) is also equipped with an audible and visual alarm (7) at the top, which is electrically connected to the controller (11).

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