Multi-path air inlet structure and carbonitriding furnace

Abstract

The utility model relates to carbon and nitrogen co -permeation furnace technical field, concretely relates to a kind of multi-path air intake structure and carbon and nitrogen co -permeation furnace, the multi-path air intake structure includes main path air intake component and multiple branch air intake component;Main path air intake component is communicated with process gas source;Every branch air intake component is respectively provided with air inlet end and air outlet end, every air inlet end is communicated with the end of main path air intake component away from process gas source, every air outlet end is located inside hearth, and multiple air outlet ends are evenly spaced along the length direction of hearth distribution.This multi-path air intake structure and carbon and nitrogen co -permeation furnace provided by the utility model can make process gas even pass into different positions inside hearth, improve the uniformity of atmosphere inside hearth, to improve the quality of part heat treatment inside hearth.

Description

Technical Field

[0001] This utility model relates to the field of nuclear reactor installation technology, specifically to a multi-inlet structure and a carbonitriding furnace. Background Technology

[0002] Carbonitriding is a heat treatment process that simultaneously diffuses carbon and nitrogen into the surface of a workpiece. It is usually carried out in a controlled atmosphere furnace, and the carbonitriding furnace is a commonly used heat treatment equipment in the carbonitriding process.

[0003] Currently, existing carbonitriding furnaces inject the required process gas into the furnace chamber through only one gas inlet pipe and its corresponding inlet. This results in the injected process gas extending to various parts of the furnace from only one direction, leading to significant differences in the uniformity of the atmosphere in different parts of the furnace, which makes it impossible to guarantee the heat treatment quality of the parts. Utility Model Content

[0004] (I) This utility model provides a multi-way air intake structure and a carbonitriding furnace, which alleviates the technical problem of low uniformity of process atmosphere in the furnace after process gas is injected into the carbonitriding furnace in the prior art.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, embodiments of this utility model provide a multi-way air intake structure, including a main air intake assembly and multiple branch air intake assemblies;

[0007] The main intake assembly is connected to the process air source;

[0008] Each of the branch air intake components has an air intake end and an air outlet end. Each air intake end is connected to the end of the main air intake component that is away from the process gas source. Each air outlet end is located inside the furnace, and multiple air outlet ends are evenly spaced along the length of the furnace.

[0009] Furthermore, the main intake assembly includes a main intake channel, one end of which is connected to the process air source, and the other end is connected to the intake end of each branch intake assembly.

[0010] Furthermore, the main intake assembly also includes a first solenoid valve, which is located in the main intake channel and is used to control the opening and closing of the main intake channel.

[0011] Furthermore, each of the branch air intake components includes an air intake branch channel, one end of which is connected to the main air intake channel, and the other end is evenly spaced within the furnace.

[0012] Furthermore, the air inlet and the air outlet are respectively located at both ends of each air inlet branch channel.

[0013] Furthermore, each of the branch intake components also includes a second solenoid valve, and each of the intake branch channels is provided with the second solenoid valve, which is used to control the opening and closing of the intake branch channel.

[0014] Furthermore, both the main intake channel and the branch intake channel are made of stainless steel pipes.

[0015] Furthermore, the multi-intake structure also includes a control terminal, which is electrically connected to the first solenoid valve and the second solenoid valve respectively.

[0016] Furthermore, the control terminal is an electronic controller.

[0017] An embodiment of this utility model also provides a carbonitriding furnace, including a furnace body and the aforementioned multi-channel air intake structure;

[0018] The furnace chamber is formed inside the furnace body, and the multi-channel air intake structure is connected to the furnace chamber, through which the required process gas is injected into the furnace chamber.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a multi-channel air intake structure, including a main air intake assembly and multiple branch air intake assemblies. The main air intake assembly is connected to a process gas source, which provides the required process gas for the entire multi-channel air intake structure. Correspondingly, each branch air intake assembly has an inlet end and an outlet end. The inlet end is connected to the main air intake assembly, and the outlet end is located inside the furnace. This allows the process gas to be injected into the furnace along the direction of the main air intake assembly and the branch air intake assemblies. Since the multiple outlet ends are evenly spaced along the length of the furnace, the process gas can be evenly introduced into different positions inside the furnace, improving the atmosphere uniformity inside the furnace and thus improving the quality of heat treatment of parts inside the furnace.

[0021] This utility model provides a carbonitriding furnace, including a furnace body and the aforementioned multi-channel air inlet structure. The required process gas is injected into the furnace chamber formed inside the furnace body through the multi-channel air inlet structure. Since the outlet ends of the multiple branch air inlet components are evenly spaced along the length of the furnace chamber, the process atmosphere in the furnace chamber can be more uniform, and parts in different positions in the furnace chamber can fully contact the process gas, thereby improving the quality of heat treatment of the parts. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the multi-intake structure provided in the embodiment of this utility model.

[0024] icon:

[0025] 100 - Inlet end; 101 - Outlet end; 102 - Furnace chamber; 103 - Main inlet channel; 104 - First solenoid valve; 105 - Branch inlet channel; 106 - Second solenoid valve. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] Example 1

[0030] like Figure 1As shown, this utility model provides a multi-way air intake structure, including a main air intake assembly and multiple branch air intake assemblies;

[0031] The main intake assembly is connected to the process air source;

[0032] Each branch air intake assembly has an air intake end 100 and an air outlet end 101. Each air intake end 100 is connected to the end of the main air intake assembly that is away from the process gas source. Each air outlet end 101 is located inside the furnace 102, and multiple air outlet ends 101 are evenly spaced along the length of the furnace 102.

[0033] In this embodiment, the multi-channel air intake structure includes a main air intake assembly and multiple branch air intake assemblies. The main air intake assembly is connected to a process gas source, which provides the required process gas for the entire multi-channel air intake structure. Correspondingly, each branch air intake assembly has an inlet end 100 and an outlet end 101. The inlet end 100 is connected to the main air intake assembly, and the outlet end 101 is located inside the furnace 102, so that the process gas can be injected into the furnace 102 along the direction of the main air intake assembly and the branch air intake assembly. Since the multiple outlet ends 101 are evenly spaced along the length of the furnace 102, the process gas can be evenly introduced into different positions inside the furnace 102, improving the atmosphere uniformity inside the furnace 102, thereby improving the quality of heat treatment of parts inside the furnace 102.

[0034] According to one embodiment provided by this utility model, such as Figure 1 As shown, the main intake assembly includes a main intake channel 103, one end of which is connected to the process air source, and the other end is connected to the intake end 100 of each branch intake assembly.

[0035] In this embodiment, one end of the main intake channel 103 is connected to the process gas source, and the other end is connected to the intake end 100 of each branch intake component, so that the process gas can be transported to each branch intake component through the main intake channel 103, and then transported to the corresponding different areas in the furnace 102 through each branch intake component.

[0036] According to one embodiment provided by this utility model, such as Figure 1 As shown, the main intake assembly also includes a first solenoid valve 104, which is located in the main intake channel 103 and is used to control the opening and closing of the main intake channel 103.

[0037] In this embodiment, a first solenoid valve 104 is also provided in the main intake channel 103. The opening and closing of the main intake channel 103 is controlled by the first solenoid valve 104, thereby facilitating precise control of the main intake channel 103.

[0038] Of course, other forms of electrically controlled valves can be used to replace the first solenoid valve 104. Similarly, manual valves can also be used, but due to their poor accuracy, they will not be elaborated here. Their purpose has not deviated from the design concept of this utility model and should be within the protection scope of this utility model.

[0039] According to one embodiment provided by this utility model, such as Figure 1 As shown, each branch air intake assembly includes an air intake branch channel 105. One end of each air intake branch channel 105 is connected to the main air intake channel 103, and the other end is evenly spaced in the furnace 102.

[0040] In this embodiment, one end of each intake branch channel 105 is connected to the main intake channel 103 so that the process gas in the main intake channel 103 can be transported to each intake straight channel along its own extension direction. At the same time, the other end of each intake branch channel 105 is evenly spaced in the furnace 102. After entering the intake branch channel 105, the process gas is transported to different areas of the furnace 102 along the extension direction of the intake branch channel 105 to improve the atmosphere uniformity in the furnace and improve the heat treatment quality of the parts in the furnace 102.

[0041] According to one embodiment provided by this utility model, such as Figure 1 As shown, the air inlet 100 and the air outlet 101 are respectively located at both ends of each air inlet branch channel 105.

[0042] In this embodiment, the two ends of the intake branch channel 105 correspond to the intake end 100 and the exhaust end 101, respectively. That is, the intake branch channel 105 is connected to the intake main channel 103 through the intake end 100 and to the intake branch channel 105 through the exhaust end 101.

[0043] According to one embodiment provided by this utility model, such as Figure 1 As shown, each branch intake assembly also includes a second solenoid valve 106. Each intake branch channel 105 is provided with a second solenoid valve 106, which is used to control the opening and closing of the intake branch channel 105.

[0044] In this embodiment, each air intake branch channel 105 is also provided with an independent second solenoid valve 106. The opening and closing of the air intake branch channel 105 is controlled by the second solenoid valve 106, so as to facilitate precise control of the opening and closing of different air intake branch channels 105, so as to ensure the uniformity of the atmosphere in the furnace 102.

[0045] Of course, other forms of electrically controlled valves can be used to replace the second solenoid valve 106. Similarly, manual valves can also be used, but due to their poor accuracy, they will not be elaborated here. Their purpose has not deviated from the design concept of this utility model and should be within the protection scope of this utility model.

[0046] According to one embodiment provided by this utility model, such as Figure 1 As shown, both the main intake channel 103 and the branch intake channel 105 are made of stainless steel.

[0047] In this embodiment, the main intake channel 103 and the intake branch channel 105 need to meet the requirements of high temperature resistance, corrosion resistance, and resistance to carburizing / nitriding to ensure long-term stable operation. Therefore, stainless steel pipes are selected. Preferably, 304 stainless steel, 306 / 306L stainless steel or 310S stainless steel can be selected.

[0048] According to one embodiment provided by this utility model, such as Figure 1 As shown, the multi-intake structure also includes a control terminal, which is electrically connected to the first solenoid valve 104 and the second solenoid valve 106 respectively.

[0049] In this embodiment, the opening and closing of the first solenoid valve 104 and the second solenoid valve 106 are directly controlled by the control terminal, so as to control the injection of gas into the furnace 102 through the main air intake channel 103 and the branch air intake channel 105, making the whole process more precise.

[0050] According to one embodiment provided by this utility model, such as Figure 1 As shown, the control terminal is an electronic controller.

[0051] In this embodiment, the opening and closing of the first solenoid valve 104 and the second solenoid valve 106 are controlled by an electronic controller. A fixed interval time is set in the program of the electronic controller, such as switching to the next second solenoid valve 106 for gas intake every 10 seconds, to ensure the uniformity of the process gas atmosphere injected into the furnace 102. At the same time, the first solenoid valve 104 and different second solenoid valves 106 can be opened or closed individually to facilitate the injection of different gases and improve the overall applicability.

[0052] Example 2

[0053] This utility model also provides a carbonitriding furnace, including a furnace body and the above-mentioned multi-inlet structure;

[0054] The interior of the furnace body forms a furnace chamber 102, and a multi-channel air intake structure is connected to the furnace chamber 102 to inject the required process gas into the furnace chamber 102.

[0055] In this embodiment, the carbonitriding furnace includes a furnace body and the aforementioned multi-inlet structure. The required process gas is injected into the furnace chamber 102 formed inside the furnace body through the multi-inlet structure. Since the outlet ends 101 of the multiple branch inlet components are evenly spaced along the length of the furnace chamber 102, the process atmosphere in the furnace chamber 102 can be made more uniform, and the parts in different positions in the furnace chamber 102 can fully contact the process gas, thereby improving the quality of the heat treatment of the parts.

[0056] Among them, the preferred ones are, such as Figure 1 As shown, the furnace 102 is evenly divided into five regions along its length, each region having the same area. Each region has an outlet 101 with an inlet branch channel 105. From left to right, the outlet 101 of the first region is located in the center of the left side of the region. The outlets 101 of the remaining regions are arranged alternately above and below the regions to ensure the uniformity of the atmosphere in the furnace 102, so that parts in different positions in the furnace 102 can fully contact the process gas.

[0057] Of course, the furnace chamber 102 can be divided into three, four or more areas according to actual usage needs. The number of areas can be matched one-to-one with the number of air intake branch channels 105. The purpose is not different from the design concept of this utility model and should be within the protection scope of this utility model.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-channel air intake structure, characterized in that, Includes the main intake assembly and multiple branch intake assemblies; The main intake assembly is connected to the process air source; Each of the branch air intake components has an air intake end (100) and an air outlet end (101). Each air intake end (100) is connected to the end of the main air intake component away from the process gas source. Each air outlet end (101) is located inside the furnace (102), and multiple air outlet ends (101) are evenly spaced along the length of the furnace (102).

2. The multi-intake structure according to claim 1, characterized in that, The main intake assembly includes an intake main channel (103), one end of which is connected to the process air source, and the other end is connected to the intake end (100) of each branch intake assembly.

3. The multi-intake structure according to claim 2, characterized in that, The main intake assembly also includes a first solenoid valve (104), which is located in the main intake channel (103) and is used to control the opening and closing of the main intake channel (103).

4. The multi-intake structure according to claim 3, characterized in that, Each of the branch air intake components includes an air intake branch channel (105), one end of which is connected to the main air intake channel (103), and the other end is evenly spaced in the furnace (102).

5. The multi-intake structure according to claim 4, characterized in that, The air inlet (100) and the air outlet (101) are respectively located at both ends of each of the air inlet branch channels (105).

6. The multi-intake structure according to claim 5, characterized in that, Each of the branch intake assemblies also includes a second solenoid valve (106), and each of the intake branch channels (105) is provided with the second solenoid valve (106), which is used to control the opening and closing of the intake branch channel (105).

7. The multi-intake structure according to claim 6, characterized in that, Both the main intake channel (103) and the branch intake channel (105) are made of stainless steel pipes.

8. The multi-intake structure according to claim 6, characterized in that, The multi-way air intake structure also includes a control terminal, which is electrically connected to the first solenoid valve (104) and the second solenoid valve (106) respectively.

9. The multi-intake structure according to claim 8, characterized in that, The control terminal is an electronic controller.

10. A carbonitriding furnace, characterized in that, Includes the furnace body and the multi-inlet structure as described in any one of claims 1-9; The furnace body forms the furnace chamber (102) inside, and the multi-way air intake structure is connected to the furnace chamber (102) to inject the required process gas into the furnace chamber (102) through the multi-way air intake structure.

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