Integrated high-temperature circulating fan with oil cooling circulating system for annular furnace

Abstract

The utility model discloses an integrated high-temperature circulating fan with an oil cooling circulating system for an annular furnace, which comprises a high-temperature circulating fan unit and an oil cooling circulating system, the oil cooling circulation system comprises an oil return annular pipeline and an oil outlet annular pipeline, the oil return annular pipeline and the oil outlet annular pipeline are respectively communicated with an oil storage tank, and the oil storage tank is communicated with the oil cooler; the oil cooling circulating system further comprises a plurality of groups of first oil outlet pipelines and first oil return pipelines, the first oil outlet pipelines are communicated with oil outlets of the high-temperature circulating fan units and the annular oil outlet pipeline, and the first oil return pipelines are communicated with oil inlets of the high-temperature circulating fan units and the annular oil return pipeline; two sets of arc-shaped pipelines are arranged along the inner ring of the annular furnace, the arc-shaped pipelines are downwards led out through cast iron pipes to be connected with the oil storage tank on the ground, and then the oil storage tank is connected with the oil cooler to form a set of circulating cooling system of the high-temperature circulating fan of the annular furnace, so that the use temperature of heat-conducting oil is well ensured to be below 50 DEG C; and effective cooling of components such as the high-temperature circulating fan bearing is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooling technical field, concretely relates to a kind of integrated high-temperature circulating fan with oil cooling circulation system for ring furnace. BACKGROUND

[0002] Ring carburizing furnace is relatively new furnace type, because it greatly shortens process cycle, it has outstanding performance in saving cost, less energy consumption, reducing space occupation, saving material tray and so on.Workpiece and material tray rotate with furnace bottom, there is no movement between each other, reduce the stress of material tray, prolong its service life, save the cost of material tray and driving motor, and shorten process time by up to 25%.In the carburizing process, high-temperature circulating fan plays a role in dispersing carburizing medium, uniform temperature and atmosphere in carburizing furnace, and ensures uniform carburizing effect of parts produced by ring furnace.However, the high-temperature circulating fan of the ring furnace has the following disadvantages in cooling design:

[0003] High-temperature circulating fan is an independent unit.A 42-station ring furnace carburizing furnace has 9 high-temperature circulating fans, and each high-temperature circulating fan is independently arranged at each position of the ring furnace.Currently, the high-temperature circulating fan of the ring furnace uses heat-conducting oil cooling, and the top end of the high-temperature circulating fan has an oil cooling package.The heat-conducting oil gasifies after cooling the fan bearing, rises to the oil cooling package part through the pipeline, and then liquefies again, and then returns to the fan bearing part through the pipeline to form a cycle.In actual use, because the oil cooling package is close to the high-temperature circulating fan and has a limited volume, the heat-conducting oil cooling cycle is not sufficient, and in addition, the heat-conducting oil is prone to aging, thereby reducing the cooling effect and causing the high-temperature circulating fan to fail early, and the overall service life is not high.

[0004] During maintenance, the operator needs to regularly climb to the top of the ring furnace to add heat-conducting oil to the high-temperature circulating fan, which increases the labor intensity of the operator, and the equipment is live and has high temperature and high pressure, which has safety hazards.

[0005] The condition of the heat-conducting oil running in the high-temperature circulating fan, such as temperature, cannot be monitored in real time, and sampling of the oil cannot be implemented.If sampling is required, the equipment needs to be shut down.

[0006] The above disadvantages hinder the normal and orderly production of the ring carburizing furnace.This project develops an integrated high-temperature circulating fan liquid cooling circulation system to avoid the above disadvantages. SUMMARY

[0007] In view of the deficiencies in the prior art, the utility model aims to provide an integrated high-temperature circulating fan with oil cooling circulation system for ring furnace, which solves the problem of insufficient heat-conducting oil cooling cycle of the high-temperature circulating fan in the prior art.

[0008] In order to solve the above technical problems, the utility model discloses the following technical scheme to realize: a high temperature circulating fan of integrated type with oil cooling circulation system for ring furnace, including high temperature circulating fan unit, still including the oil cooling circulation system of high temperature circulating fan unit connection.

[0009] The oil cooling circulation system includes an oil return annular pipeline and an oil outlet annular pipeline, the oil return annular pipeline and the oil outlet annular pipeline are communicated with an oil storage tank respectively, and the oil storage tank is communicated with an oil cooler.

[0010] The oil cooling circulation system further includes a plurality of groups of first oil outlet pipelines and first oil return pipelines, the first oil outlet pipelines are communicated with oil outlets of the high temperature circulating fan unit and the oil outlet annular pipeline, and the first oil return pipelines are communicated with oil inlets of the high temperature circulating fan unit and the oil return annular pipeline.

[0011] The utility model further has the following technical features:

[0012] The first oil outlet pipelines and the first oil return pipelines are respectively provided with first oil outlet valves and first oil return valves.

[0013] The oil return annular pipeline is communicated with a circulating oil inlet of the oil storage tank through a second oil return pipeline, and the oil outlet annular pipeline is communicated with a circulating oil outlet of the oil storage tank through a second oil outlet pipeline.

[0014] A cooling oil outlet of the oil storage tank is communicated with the oil cooler through a third oil outlet pipeline, and a cooling oil return port of the oil storage tank is communicated with the oil cooler through a third oil return pipeline.

[0015] The second oil return pipeline is provided with a first oil return pipeline circulating pump.

[0016] The third oil return pipeline is provided with a second oil return pipeline circulating pump.

[0017] The second oil outlet pipeline and the second oil return pipeline are respectively provided with second oil outlet valves and second oil return valves.

[0018] The third oil outlet pipeline and the third oil return pipeline are respectively provided with third oil outlet valves and third oil return valves.

[0019] The bottom of the oil storage tank is provided with an agitator.

[0020] Compared with the prior art, the utility model has the following technical effects:

[0021] (Ⅰ) The utility model provides a kind of integrated high-temperature circulating fan of annular furnace with oil cooling circulation system, adopt two sets of arc-shaped pipeline, one in and one out, along the inner ring of annular furnace is arranged, arc-shaped pipeline is connected with the ground oil storage tank by being led down by cast iron pipe, and oil storage tank is connected with an oil cooler again, form a set of annular furnace high-temperature circulating fan circulating cooling system, this high-temperature circulating fan liquid cooling circulation system is well guaranteed to use temperature of heat conducting oil below 50 DEG C, on the one hand, the effective cooling of high-temperature circulating fan bearing and other components is guaranteed, and the service life of high-temperature circulating fan is improved by 2 times.

[0022] (Ⅱ) The utility model provides a kind of integrated high-temperature circulating fan of annular furnace with oil cooling circulation system, simple structure, convenient operation, safe and reliable, strong adaptability. DRAWINGS

[0023] Figure 1 It is the installation position schematic view of the integrated high-temperature circulating fan of annular furnace with oil cooling circulation system of the utility model.

[0024] Figure 2 It is the overall structure schematic view of the integrated high-temperature circulating fan of annular furnace with oil cooling circulation system of the utility model.

[0025] Figure 3 It is the valve installation position schematic view of the utility model.

[0026] Figure 4 It is high-temperature circulating fan unit structure schematic view.

[0027] Figure 5 It is oil storage tank structure schematic view.

[0028] Meaning of each reference numeral in drawing:

[0029] 1-high-temperature circulating fan unit, 2-connected oil cooling circulation system, 3-first oil return pipe circulating pump, 4-second oil return pipe circulating pump, 5-agitator.

[0030] 2-1 oil return annular pipeline, 2-2 oil outlet annular pipeline, 2-3 oil storage tank, 2-4 oil cooler, 2-5 first oil outlet pipeline, 2-6 first oil return pipeline, 2-7 first oil outlet pipe valve, 2-8 first oil return pipe valve, 2-9 second oil return pipeline, 2-10 second oil outlet pipeline, 2-11 third oil outlet pipeline, 2-12 third oil return pipeline, 2-13 second oil outlet pipe valve, 2-14 second oil return pipe valve, 2-15 third oil outlet pipe valve, 2-16 third oil return pipe valve.

[0031] The specific content of the utility model is further explained and described in detail in connection with embodiments. DETAILED DESCRIPTION

[0032] Unless otherwise specified, all components in this invention are made from components known in the prior art.

[0033] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0034] Example 1:

[0035] This embodiment provides an integrated high-temperature circulating fan for an annular furnace with an oil-cooled circulation system, such as... Figures 1-5 As shown, it includes a high-temperature circulating fan unit 1 and an oil-cooled circulating system 2 connected to the high-temperature circulating fan unit 1.

[0036] The oil cooling circulation system 2 includes an oil return ring pipe 2-1 and an oil outlet ring pipe 2-2, which are respectively connected to an oil storage tank 2-3, and the oil storage tank 2-3 is connected to an oil cooler 2-4.

[0037] The oil cooling circulation system 2 further includes several sets of first oil outlet pipes 2-5 and first oil return pipes 2-6. The first oil outlet pipes 2-5 are connected to the oil outlet of the high-temperature circulating fan unit 1 and the oil outlet annular pipe 2-2. The first oil return pipes 2-6 are connected to the oil inlet of the high-temperature circulating fan unit 1 and the oil return annular pipe 2-1.

[0038] Oil outlet refers to the direction in which oil flows out of the high-temperature circulating fan unit 1, and oil return refers to the direction in which oil returns to the high-temperature circulating fan unit 1.

[0039] To address the lifespan issue of high-temperature circulating fans, the oil cooling pack at the top of the high-temperature circulating fan unit 1 in the prior art is eliminated. The oil outlet of the high-temperature circulating fan unit 1 is connected to the oil outlet annular pipe 2-2 through the first oil outlet pipe 2-5, and the oil inlet of the high-temperature circulating fan unit 1 is connected to the oil return annular pipe 2-1 through the first oil return pipe 2-6.

[0040] Both the return oil ring line 2-1 and the outlet oil ring line 2-2 are three-section structures: cast iron pipe - stainless steel braided hose - cast iron pipe. This connection method can improve the flexibility of the pipeline connection and reduce the stress caused by the pipeline's temperature changes during use. The pipeline is wrapped with insulation cotton and the outermost layer is wrapped with sheet metal, which reduces heat conduction and protects the pipeline.

[0041] Two sets of arc-shaped pipelines, oil return annular pipeline 2-1 and oil outlet annular pipeline 2-2 (one in and one out) are arranged along the inner ring of the annular furnace, the arc-shaped pipelines are downwardly connected with the ground oil storage tank 2-3 through cast iron pipes, and the oil storage tank 2-3 is connected with an oil cooler 2-4, thereby forming a high-temperature circulating fan circulating cooling system of the annular furnace.

[0042] As a preferred embodiment of the present embodiment:

[0043] The first oil outlet pipeline 2-5 and the first oil return pipeline 2-6 are respectively provided with a first oil outlet pipeline valve 2-7 and a first oil return pipeline valve 2-8.

[0044] As a preferred embodiment of the present embodiment:

[0045] As shown in Figure 4 The oil return annular pipeline 2-1 is connected with the circulating oil inlet of the oil storage tank 2-3 through a second oil return pipeline 2-9, and the oil outlet annular pipeline 2-2 is connected with the circulating oil outlet of the oil storage tank 2-3 through a second oil outlet pipeline 2-10.

[0046] The cooling oil outlet of the oil storage tank 2-3 is connected with the oil cooler 2-4 through a third oil outlet pipeline 2-11, and the cooling oil return port of the oil storage tank 2-3 is connected with the oil cooler 2-4 through a third oil return pipeline 2-12.

[0047] As a preferred embodiment of the present embodiment:

[0048] As shown in Figure 2 and Figure 3 The second oil return pipeline 2-9 is provided with a first oil return pipeline circulating pump 3.

[0049] The third oil return pipeline 2-12 is provided with a second oil return pipeline circulating pump 4.

[0050] The second oil outlet pipeline 2-10 and the second oil return pipeline 2-9 are respectively provided with a second oil outlet pipeline valve 2-13 and a second oil return pipeline valve 2-14.

[0051] The third oil outlet pipeline 2-11 and the third oil return pipeline 2-12 are respectively provided with a third oil outlet pipeline valve 2-15 and a third oil return pipeline valve 2-16.

[0052] The second oil outlet pipeline valve 2-13, the second oil return pipeline valve 2-14, the third oil outlet pipeline valve 2-15 and the third oil return pipeline valve 2-16 are all manual valves.

[0053] As a preferred embodiment of the present application:

[0054] As Figure 5 shown, the oil tank 2-3 bottom is arranged with a stirrer 5, which facilitates the circulation of the heat conducting oil in the oil tank 2-3 and the exchange of oil temperature heat.

[0055] The specific working process of the utility model:

[0056] As Figures 1-3 shown, the annular furnace high-temperature circulating fan cooling circulation system diagram. By with high-temperature circulating fan unit 1 connected with a set of first oil outlet pipeline 2-5 and first oil return pipeline 2-6, pipeline each with first oil outlet valve 2-7 and first oil return valve 2-8,

[0057] An arc-shaped oil return annular pipeline 2-1 and an arc-shaped and oil outlet annular pipeline 2-2, the second oil return pipeline 2-9 and the second oil outlet pipeline 2-10 of the oil tank 2-3 are connected, (with first oil return pipe circulating pump 3, thermometer, alarm, second oil return valve 2-14), oil tank 2-3, oil cooler 2-4, third oil outlet pipeline 2-11 and third oil return pipeline 2-12 connecting oil tank 2-3 and oil cooler 2-4 (with second oil return pipe circulating pump 4, alarm).

[0058] High-temperature circulating fan unit 1 connected with each set of oil outlet and oil return pipeline, respectively, first oil outlet pipeline 2-5 and first oil return pipeline 2-6, remove the original high-temperature circulating fan oil cooling bag, directly connected with the oil outlet and oil return port of high-temperature circulating fan, the hot heat conducting oil in high-temperature circulating fan unit 1 is extracted, and the returned cold heat conducting oil is received.

[0059] Two annular oil outlet and oil return pipelines are oil return annular pipeline 2-1 and oil outlet annular pipeline 2-2, which distribute and collect the oil outlet and oil return of nine high-temperature circulating fan units 1, and are concentrated to the oil tank 2-3 with a volume of 1.5-2m3, and the oil tank 2-3 bottom is arranged with a stirrer, which is set to 200r / min, which is beneficial to the circulation of the heat conducting oil in the oil tank 2-3 and the exchange of oil temperature heat.

[0060] The two sets of oil outlet (upper end) and oil return pipeline (lower end) connected with the oil storage tank 2-3 are respectively a second oil return pipeline 2-9 and a second oil outlet pipeline 2-10, which is beneficial to the self-circulation of the cooling oil, the second oil return pipeline 2-9 is provided with a first oil return pipeline circulating pump 3 with a flow requirement of 130-200 L / min, a thermometer, an alarm, a second oil outlet pipeline valve 2-13 and the like, the first oil return pipeline circulating pump 3 is used for conveying the heat conducting oil, the thermometer is used for detecting the oil temperature in the pipeline and monitoring the oil temperature of the circulating system in real time, and the alarm is used for issuing sound and light alarms when the temperature or flow exceeds the requirement, so as to facilitate the operator to handle the related faults in time. 3 The third oil return pipeline 2-12 is provided with a second oil return pipeline circulating pump 4 with a flow requirement of 0-3 m

[0061] Figure 4 The structure of the high-temperature circulating fan is changed for the new circulating system, the original oil cooling bag of the high-temperature circulating fan is cancelled, and the pipeline 2-5 and the pipeline 2-6 are connected with the corresponding outlet and return respectively, and the pipeline is provided with a hand valve, so as to facilitate the control of the oil circuit.

[0062] If a single high-temperature circulating fan fails and needs to be replaced, the maintenance personnel manually close the valves on the outlet and return pipeline connected with the fan, normally remove the high-temperature circulating fan, and at the same time, do not affect the normal operation of other high-temperature circulating fans. After the new high-temperature circulating fan is installed, the pipeline connected with the outlet and return is connected again, and the valve is opened again.

[0063] The high-temperature circulating fan liquid cooling circulating system can well ensure that the use temperature of the heat conducting oil is below 50 DEG C, on the one hand, the effective cooling of the bearing and the like of the high-temperature circulating fan is ensured, and the service life of the high-temperature circulating fan is improved by 2 times, on the other hand, the use process of the heat conducting oil is monitored, and the service life of the oil is also improved, and the system is good in maintenance and low in failure rate.

[0064] The above technical scheme is only a relatively preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can think of changes or replacements within the technical range disclosed by the utility model without creative labor, which is covered in the protection scope of the utility model.

Claims

1. An integrated high-temperature circulating fan for a ring furnace with an oil-cooled circulation system, comprising a high-temperature circulating fan unit (1), characterized in that, It also includes an oil-cooled circulation system (2) connected to the high-temperature circulating fan unit (1); The oil cooling circulation system (2) includes an oil return ring pipe (2-1) and an oil outlet ring pipe (2-2). The oil return ring pipe (2-1) and the oil outlet ring pipe (2-2) are respectively connected to an oil storage tank (2-3). The oil storage tank (2-3) is connected to an oil cooler (2-4). The oil cooling circulation system (2) further includes several sets of first oil outlet pipes (2-5) and first oil return pipes (2-6). The first oil outlet pipe (2-5) is connected to the oil outlet of the high-temperature circulating fan unit (1) and the oil outlet annular pipe (2-2). The first oil return pipe (2-6) is connected to the oil inlet of the high-temperature circulating fan unit (1) and the oil return annular pipe (2-1).

2. The integrated high-temperature circulating fan for an annular furnace with an oil-cooled circulation system as described in claim 1, characterized in that, The first oil outlet pipe valve (2-7) and the first oil return pipe valve (2-8) are respectively installed on the several sets of first oil outlet pipes (2-5) and first oil return pipes (2-6).

3. The integrated high-temperature circulating fan for an annular furnace with an oil-cooled circulation system as described in claim 1, characterized in that, The return oil ring pipeline (2-1) is connected to the circulation oil inlet of the oil storage tank (2-3) through the second return oil pipeline (2-9), and the oil outlet ring pipeline (2-2) is connected to the circulation oil outlet of the oil storage tank (2-3) through the second oil outlet pipeline (2-10). The cooling oil outlet of the oil storage tank (2-3) is connected to the oil cooler (2-4) through the third oil outlet pipeline (2-11), and the cooling oil return port of the oil storage tank (2-3) is connected to the oil cooler (2-4) through the third oil return pipeline (2-12).

4. The integrated high-temperature circulating fan for an annular furnace with an oil-cooled circulation system as described in claim 3, characterized in that, The first return oil circulation pump (3) is installed on the second return oil pipeline (2-9); The third return oil pipeline (2-12) is equipped with a second return oil circulation pump (4); A second oil outlet valve (2-13) and a second oil return valve (2-14) are respectively installed on the second oil outlet line (2-10) and the second oil return line (2-9); The third oil outlet pipeline (2-11) and the third oil return pipeline (2-12) are respectively equipped with a third oil outlet valve (2-15) and a third oil return valve (2-16).

5. An integrated high-temperature circulating fan for a ring furnace with an oil-cooled circulation system as described in claim 1, characterized in that, An agitator is arranged at the bottom of the oil storage tank (2-3).

Images