Heating device for moving blades of combustion engine

Abstract

The utility model discloses a heating device for a moving blade of a combustion engine, which relates to the technical field of heating of the moving blade of the combustion engine and comprises a heating chamber, a heating mechanism is arranged in the heating chamber, a circulating fan is arranged on one side of the heating mechanism, and a fresh air supplementing port is arranged on the side wall of the heating chamber on the other side of the heating chamber; the furnace body is located below the heating chamber, a heating cavity is formed in the furnace body, a plurality of air supply outlets are formed in the bottom end of the heating cavity, a plurality of air return inlets are formed in the top end of the heating cavity, and the air supply outlets are connected to an air outlet of the circulating fan through air supply pipes; the plurality of air return ports are connected to the end, close to the fresh air supplementing port, in the heating chamber through an air return pipe; and the exhaust mechanism is communicated with the interior of the heating cavity and is used for exhausting part of hot air in the heating cavity. The heating device adopts a hot air circulation heating mode, and can quickly and uniformly preheat, dry and solidify the movable blade of the combustion engine, so that the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating fuel engine blades, and more specifically to a preheating / drying / curing device for fuel engine blades. Background Art

[0002] The fuel blades are one of the key components in gas turbines and aircraft engines (also called gas turbine blades or turbine blades). They convert the energy of the gas into mechanical energy by rotating at high speed, driving the shaft or fan to work. They are usually made of high-temperature alloy materials and installed on the wheel or turbine. The fuel blades are subjected to extreme working conditions such as high temperature, high pressure and high speed, so they need to have excellent properties such as high temperature resistance, corrosion resistance and high strength. At the same time, the design and manufacture of fuel blades have an important influence on the performance and efficiency of the engine. Factors such as their shape, size and surface quality are directly related to the effect of gas flow and the efficiency of power output.

[0003] The quality and performance of the fuel engine blades have a significant impact on the performance and life of the entire engine. During the production process of the fuel engine blades, they need to be preheated / dried / cured to improve their strength and stability to ensure that they can operate stably under high temperature and high pressure environments.

[0004] Traditional methods for preheating / drying / curing fuel engine blades usually use burners for heating, which has problems such as high energy consumption, serious pollution, and high safety risks. Therefore, a more efficient, environmentally friendly, and safe fuel engine blade preheating / drying / curing device is needed to heat fuel engine blades. Utility Model Content

[0005] In order to overcome the defects in the above-mentioned prior art, the purpose of the utility model is to provide a heating device for combustion engine blades to solve the problems of high energy consumption, serious pollution, and high safety risks in the above-mentioned prior art. The utility model adopts hot air circulation heating, which has the advantages of low energy consumption, low pollution, and high safety.

[0006] In order to achieve the above objectives, the technical solution adopted by the utility model is:

[0007] A heating device for a combustion engine impeller, comprising:

[0008] A heating chamber, wherein a heating mechanism is disposed inside the heating chamber, a circulating fan is disposed on one side of the heating mechanism, and a fresh air supply port is opened on the side wall of the heating chamber on the other side;

[0009] A furnace body, wherein the furnace body is located below the heating chamber and has a heating cavity therein, wherein a plurality of air supply ports are disposed at the bottom end of the heating cavity and a plurality of air return ports are disposed at the top end, wherein the plurality of air supply ports are connected to the air outlet of the circulating fan through air supply pipes, and the plurality of air return ports are connected to the end of the heating chamber near the fresh air supply port through air return pipes;

[0010] An exhaust mechanism, the exhaust mechanism is connected to the heating cavity and discharges part of the hot air in the heating cavity;

[0011] A detection mechanism, the detection mechanism is located in the heating chamber to detect the internal state thereof;

[0012] A conveying mechanism is used to convey the fuel blades and pass through the furnace body.

[0013] Preferably, the exhaust mechanism includes an air collecting hood, an air collecting pipe, an exhaust pipe and an exhaust fan;

[0014] The gas collecting hood is located above the outer side of the inlet and outlet of the furnace body, the inlet of the gas collecting pipe is connected to the gas collecting hood, and the outlet is connected to the exhaust pipe. The inlet of the exhaust pipe is also connected to the top of the heating cavity and an exhaust valve is installed on the pipeline, and the outlet of the exhaust pipe is connected to the air inlet of the exhaust fan.

[0015] Preferably, a filter is provided between the heating mechanism and the circulating fan.

[0016] Preferably, the heating chamber and the exhaust fan are both installed on a steel platform, and the steel platform is supported above the furnace body by pillars. A heating chamber inspection door connected to the interior of the heating chamber and a platform ladder connected to the ground are provided on the steel platform, and a platform guardrail is provided on the outer eaves of the steel platform.

[0017] Preferably, the inlet and outlet of the furnace body are equipped with a lifting door and a self-circulating air curtain mechanism.

[0018] Preferably, an explosion vent is provided on the furnace body.

[0019] Preferably, the furnace body is a through-type integral frame structure made by welding steel sections and steel plates, and a heat-insulating layer is provided on the side walls thereof.

[0020] Preferably, the detection mechanism includes a temperature sensor and a combustible gas concentration sensor installed in the heating cavity.

[0021] Preferably, the conveying mechanism is a plate chain conveyor.

[0022] Preferably, it further comprises a control mechanism, which is electrically connected to the heating mechanism, the circulating fan, the exhaust mechanism, the conveying mechanism and the detecting mechanism respectively.

[0023] Beneficial effects of the utility model:

[0024] The heating device provided by the utility model improves production efficiency: the heating device adopts a hot air circulation heating method, which can quickly and evenly preheat, dry and solidify the fuel engine blades, thereby greatly improving production efficiency.

[0025] The heating device provided by the utility model reduces energy consumption: the heating device is provided with a return air port and a return air duct, which can collect the air after heat exchange and heat it again for recycling, thereby reducing energy consumption and improving thermal efficiency.

[0026] The heating device provided by the utility model reduces pollution: in order to ensure that the concentration of organic components in the furnace body is within a safe range, an exhaust fan is connected to the exhaust port of the furnace body to discharge hot air containing organic components to avoid pollution to the environment.

[0027] The heating device provided by the utility model improves production quality: by adopting a hot air circulation heating method to perform preheating, drying and curing, the fuel engine blades can be processed evenly, thereby improving the quality stability of the product.

[0028] The heating device provided by the utility model improves safety: the exhaust port of the furnace body is connected to an exhaust fan, which can discharge hot air containing a concentration of organic components to avoid safety risks such as explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The interior of the utility model is shown in FIG. Figure 1 ;

[0030] Figure 2 The interior of the utility model is shown in FIG. Figure 2 ;

[0031] Reference numerals:

[0032] 1. Heating chamber; 11. Heating mechanism; 12. Circulating fan; 13. Fresh air supply port; 14. Filter; 15. Steel platform; 16. Pillar; 17. Heating chamber inspection door; 19. Platform guardrail; 2. Furnace body; 21. Heating cavity; 22. Air supply duct; 23. Return air duct; 24. Lifting door; 25. Air curtain mechanism; 26. Explosion vent; 3. Exhaust mechanism; 31. Air collecting hood; 32. Air collecting duct; 33. Exhaust duct; 34. Exhaust fan; 35. Exhaust valve; 4. Conveying mechanism. DETAILED DESCRIPTION

[0033] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, features and effects of the present invention.

[0034] Example 1

[0035] A heating device for a combustion engine blade, such as Figure 1 and 2 As shown, including:

[0036] A heating chamber 1 is provided with a heating mechanism 11 inside the heating chamber 1, a circulating fan 12 is provided on one side of the heating mechanism 11, and a fresh air supply port 13 is provided on the side wall of the heating chamber 1 on the other side;

[0037] The furnace body 2 is located below the heating chamber 1 and is provided with a heating cavity 21. The bottom end of the heating cavity 21 is provided with a plurality of air supply ports, and the top end is provided with a plurality of return air ports. The plurality of air supply ports are connected to the air outlet of the circulating fan 12 through the air supply pipe 22, and the plurality of return air ports are connected to the end of the heating chamber 1 near the fresh air supply port 13 through the return air pipe 23;

[0038] The exhaust mechanism 3 is connected to the heating cavity 21 to exhaust part of the hot air in the heating cavity 21;

[0039] A detection mechanism, which is located in the heating cavity 21 to detect its internal state;

[0040] The conveying mechanism 4 conveys the fuel blades and passes through the furnace body 2.

[0041] In this embodiment, the hot air circulation heating is carried out. Specifically, a circulation fan 12 is arranged in the heating chamber 1. The circulation fan 12 sends the air heated by the heating mechanism 11 into the furnace body 2 through the air supply pipe 22 to exchange heat with the workpiece, so as to heat the workpiece. At the same time, the air after the heat exchange is recovered, and the fresh air from the return air pipe 23 and the fresh air supply port 13 forms an internal circulation together, forming a hot air circulation heating environment in the heating chamber 1.

[0042] During the drying process, in order to ensure that the concentration of organic components in the furnace body 2 is within a safe range, it is necessary to discharge a portion of the hot air containing the organic component concentration and inhale a portion of fresh air to supplement it. To this end, the heating chamber is provided with a fresh air supply port 13, and the furnace body 2 is provided with an exhaust mechanism 3, wherein the exhaust mechanism 3 of the furnace body 2 can discharge the hot air containing the organic component concentration to avoid safety risks such as explosion.

[0043] In addition, the present embodiment is also provided with a return air port and a return air duct 23, which can collect the air after heat exchange and reheat it for recycling, thereby reducing energy consumption and improving thermal efficiency. In addition, in order to increase the return air effect, a return air fan can be added to the return air duct 23 to enhance the return air effect.

[0044] In summary, the heating device for fuel engine blades provided in this embodiment has the advantages of low energy consumption, low pollution, high safety, etc., and can effectively improve the production efficiency and quality of fuel engine blades.

[0045] Example 2

[0046] This embodiment is further described on the basis of embodiment 1. Figure 1 and 2 As shown, the exhaust mechanism 3 includes an air collecting hood 31, an air collecting pipe 32, an exhaust pipe 33 and an exhaust fan 34;

[0047] The gas collecting hood 31 is located above the outer side of the inlet and outlet of the furnace body 2. The inlet of the gas collecting pipe 32 is connected to the gas collecting hood 31, and the outlet is connected to the exhaust pipe 33. The inlet of the exhaust pipe 33 is also connected to the top of the heating cavity 21 and an exhaust valve 35 is installed on the pipeline. The outlet of the exhaust pipe 33 is connected to the air inlet of the exhaust fan 34.

[0048] During the drying process, in order to ensure that the concentration of organic components in the drying oven is within a safe range (the maximum volume concentration cannot exceed 25% of its lower explosion limit), the drying oven needs to exhaust a portion of hot air containing organic components and inhale a portion of fresh air to supplement it. In this embodiment, the hot air containing organic components in the furnace body 2 is discharged through the exhaust pipe 33 and the exhaust fan 34. In addition, the air collecting hood 31 and the air collecting pipe 32 are provided to collect the hot air overflowing from the furnace body 2 and discharge it through the exhaust pipe 33 and the exhaust fan 34.

[0049] Example 3

[0050] This embodiment is further described on the basis of embodiment 2. Figure 1 and 2 As shown, a filter 14 is provided between the heating mechanism 11 and the circulating fan 12 to filter the hot air in the oven.

[0051] like Figure 1 and 2 As shown, the heating chamber 1 and the exhaust fan 34 are both installed on a steel platform 15, which is supported above the furnace body 2 by pillars 16. The steel platform 15 is provided with a heating chamber inspection door 17 connected to the interior of the heating chamber 1 and a platform ladder connected to the ground, and a platform guardrail 19 is provided on the outer edge of the steel platform 15. Among them, the steel platform 15 is used to place the heating chamber 1 and the exhaust fan 34; the pillars 16 are used to support the steel platform 15; the heating chamber inspection door 17 is used for heating chamber maintenance; the platform ladder is used for workers to get on and off the steel platform 15; and the platform guardrail 19 is used to protect the steel platform.

[0052] Example 4

[0053] This embodiment is further described on the basis of embodiment 3. Figure 1 and 2 As shown, the inlet and outlet of the furnace body 2 are equipped with a lifting door 24 and a self-circulating air curtain mechanism 25. The furnace body 2 is provided with an explosion relief port 26 for explosion relief. The furnace body 2 is a through-type integral frame structure made of welded steel sections and steel plates, and an insulation layer is provided on its side walls.

[0054] In this embodiment, the lifting door 24 is used to close the inlet and outlet of the furnace body 2, which is specifically a pneumatic door, and the pneumatic door sensing execution unit is interlocked with the conveying detection switch of the conveying mechanism 4. The air curtain mechanism 25 is used to isolate the heat loss in the furnace and the overflow of the exhaust gas in the furnace when the door is opened. The air curtain adopts a self-circulating design, with a left-blowing and right-sucking mode.

[0055] In this embodiment, for the furnace body 2, in order to make the temperature distribution of the heating cavity 21 uniform and ensure the baking effect, this design adopts a circulation method of lower air supply and upper air return, which effectively utilizes the indoor space, improves the indoor effective volume utilization coefficient, saves energy, reduces installed power, and facilitates cleaning in the drying tunnel.

[0056] The furnace body 2 adopts a through-type structure, and the inner cavity size of the chamber is: 6000mm×1300mm×1750mm (length×width×height). The furnace body is a through-type structure, and the solid steel (100*4mm square tube) and steel plate are welded to form an integral frame structure. The inner layer is made of 316L stainless steel plate, the outer wall steel plate thickness is 1.5mm, and the inner wall thickness is 1.5mm. To ensure that the furnace gas does not penetrate into the insulation layer and the insulation material does not enter the furnace to cause pollution, the furnace plate is made of handmade plates, fully welded, and assembled into one. The insulation plate is frameless to reduce heat transfer and ensure good sealing and insulation performance. And it is lined with steel belts during processing to ensure the sealing and self-load-bearing performance of the chamber. The insulation material is rock wool, which will not volatilize harmful substances when enduring high temperatures. The entire furnace body has sufficient rigidity, good thermal insulation performance, and good sealing at all joints.

[0057] Example 5

[0058] This embodiment is further described on the basis of the embodiment 4. The detection mechanism includes a temperature sensor and a combustible gas concentration sensor installed in the heating cavity 21. The temperature sensor is used to detect the temperature in the furnace body 2, and the combustible gas concentration sensor is used to detect the combustible gas concentration in the furnace body 2.

[0059] In this embodiment, the combustible gas concentration sensor is interlocked with the heating mechanism 11. When the combustible gas concentration in the explosion-hazardous environment reaches 25% (freely settable) of the lower explosion limit, an audible and visual alarm is immediately sounded, and the conveying mechanism 4 and the heating mechanism 11 stop running.

[0060] In this embodiment, for the temperature sensor, a total of 5 temperature measuring holes are set on the side wall of the furnace body (2 holes for customer detection and 3 holes for furnace temperature control elements). The temperature measuring thermocouple is a double-core thermocouple (which can automatically switch signals). A probe hole is installed at about 500mm at each end, and a probe hole is installed in the center of the oven. The height position is about 1000mm from the top. The probe hole size is Φ30mm.

[0061] Example 6

[0062] This embodiment is further described on the basis of embodiment 5. Figure 1 and 2 As shown, the conveying mechanism 4 is a plate chain conveyor. The workpiece enters and exits the furnace body in a through-type (through-type) manner, and the workpiece is transported in the furnace by a plate chain. The chain is made of 304 stainless steel, with smooth transmission, controllable speed (step-by-step, adjusted in time according to needs), and the conveying chain can be cleaned. A three-phase asynchronous motor is used, and the forward and reverse rotation and step-by-step adjustment of the plate chain conveying mechanism can be achieved through the motor control system.

[0063] It also includes a control mechanism, which is electrically connected to the heating mechanism 11, the circulating fan 12, the exhaust mechanism 3, the conveying mechanism 4 and the detection mechanism respectively.

[0064] In this embodiment, the control mechanism is a conventional PLC. The heating mechanism 11 is a conventional electric heating mechanism. The heating mechanism 11, the circulating fan 12, and the exhaust fan 34 are interlocked. The heating mechanism 11, the circulating fan 12, and the exhaust fan 34 must be explosion-proof in accordance with the standard. When starting up, start the circulating fan 12 and the exhaust fan 34 first, and then start the heating mechanism 11 and the conveying mechanism 4. When shutting down, turn off the heating mechanism 11 and the conveying mechanism 4 first, and then stop the fan operation.

[0065] The air supply duct 22 and the return air duct 23 guide the hot air to circulate in the oven and transfer the heat to the workpiece. In order to save energy and guide the hot air flow reasonably and effectively, the layout of lower air supply and upper return air is adopted. The outdoor part of the air duct is wrapped with 50mm thick rock wool insulation material, which is easy to install and beautiful in appearance. In order to promote the strong circulation of hot air in the room and make it evenly distributed, regulating butterfly valves (limiting devices for setting the minimum safe opening of the valve) are installed at the air supply duct, return duct, fresh air supplementary pipeline inlet, and exhaust gas discharge pipe.

[0066] In order to better understand the present invention, the following is a complete description of the working principle of the present invention:

[0067] When in use, the conveying mechanism 4 conveys the fuel blades into the heating cavity 21 of the furnace body 2 for heating.

[0068] The furnace body 2 heats the impeller of the combustion engine by means of hot air circulation heating. Specifically, the heating mechanism 11 heats the air, and the heated air is sent into the furnace body 2 by the circulating fan 12 through the air supply pipe 22 to exchange heat with the workpiece, thereby heating the workpiece. The air after heat exchange is collected by the return air pipe 23 and returned to the heating chamber 1 together with the fresh air supplied by the new air supply port 13, forming an internal circulation.

[0069] During the heating process, in order to ensure that the concentration of organic components in the oven is within a safe range (the maximum volume concentration cannot exceed 25% of its lower explosion limit), a portion of hot air containing organic components is discharged by using the exhaust mechanism 3. Specifically, a portion of hot air containing organic components in the oven body 2 is discharged through the exhaust pipe 33 and the exhaust fan 34. The hot air overflowing from the oven is collected by the air collecting hood 31 and the air collecting pipe 32, and discharged through the exhaust pipe 33 and the exhaust fan 34.

[0070] During the heating process, the air curtain mechanism 25 at the furnace door isolates the heat loss in the furnace and the exhaust gas in the furnace from overflowing when the door is opened.

[0071] During the heating process, the temperature sensor in the furnace body 2 detects the temperature in the furnace body 2, and the combustible gas concentration sensor detects the combustible gas concentration in the furnace body 2, and sends the detected data to the control mechanism.

[0072] The implementation methods of the present invention are described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalents or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A heating device for a combustion engine impeller, characterized in that: include: A heating chamber (1), wherein a heating mechanism (11) is arranged inside the heating chamber (1), a circulating fan (12) is arranged on one side of the heating mechanism (11), and a fresh air supply port (13) is opened on the side wall of the heating chamber (1) on the other side; A furnace body (2), the furnace body (2) being located below the heating chamber (1) and having a heating cavity (21) therein, the heating cavity (21) having a plurality of air supply ports at the bottom and a plurality of air return ports at the top, the plurality of air supply ports being connected to the air outlet of the circulating fan (12) via air supply pipes (22), and the plurality of air return ports being connected to the end of the heating chamber (1) close to the fresh air supply port (13) via air return pipes (23); An exhaust mechanism (3), the exhaust mechanism (3) being connected to the heating cavity (21) and exhausting part of the hot air in the heating cavity (21); A detection mechanism, the detection mechanism being located in the heating cavity (21) to detect an internal state thereof; A conveying mechanism (4), wherein the conveying mechanism (4) conveys the fuel impeller and passes through the furnace body (2).

2. The heating device according to claim 1, characterized in that The exhaust mechanism (3) comprises an air collecting hood (31), an air collecting pipe (32), an exhaust pipe (33) and an exhaust fan (34); The gas collecting hood (31) is located above the outer side of the inlet and outlet of the furnace body (2); the inlet of the gas collecting pipe (32) is connected to the gas collecting hood (31), and the outlet is connected to the exhaust pipe (33); the inlet of the exhaust pipe (33) is also connected to the top of the heating cavity (21) and an exhaust valve (35) is installed on the exhaust pipe (33); the outlet of the exhaust pipe (33) is connected to the air inlet of the exhaust fan (34).

3. The heating device according to claim 1, characterized in that A filter (14) is provided between the heating mechanism (11) and the circulating fan (12).

4. The heating device according to claim 2, characterized in that The heating chamber (1) and the exhaust fan (34) are both installed on a steel platform (15). The steel platform (15) is supported above the furnace body (2) by pillars (16). The steel platform (15) is provided with a heating chamber inspection door (17) connected to the interior of the heating chamber (1) and a platform ladder connected to the ground. The steel platform (15) is provided with a platform guardrail (19) on the outer edge.

5. The heating device according to claim 1, characterized in that The inlet and outlet of the furnace body (2) are equipped with a lifting door (24) and a self-circulating air curtain mechanism (25).

6. The heating device according to claim 1, characterized in that The furnace body (2) is provided with an explosion relief port (26).

7. The heating device according to claim 1, characterized in that The furnace body (2) is a through-type integral frame structure made by welding section steel and steel plates, and a heat-insulating layer is provided on the side wall thereof.

8. The heating device according to claim 1, characterized in that The detection mechanism comprises a temperature sensor and a combustible gas concentration sensor installed in the heating cavity (21).

9. The heating device according to claim 1, characterized in that: The conveying mechanism (4) is a plate chain conveyor.

10. The heating device according to claim 1, characterized in that It also comprises a control mechanism, which is electrically connected to the heating mechanism (11), the circulating fan (12), the exhaust mechanism (3), the conveying mechanism (4) and the detection mechanism respectively.

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