Fan equipment for calcium carbide production and calcium carbide production system

Abstract

According to the fan equipment for calcium carbide production and the calcium carbide production system, the fan is communicated with the calcium carbide furnace to extract gas products generated in the calcium carbide production process, so that the interior of the calcium carbide furnace is in a negative pressure state; meanwhile, an air inducing device is arranged on the cabinet body, and the air inducing device and the transmission temperature of the frequency converter are interlocked through a relay; in a continuous working project, when the transmission temperature in the frequency converter reaches a preset first temperature value, the normally open switch of the control loop interlocking relay in the frequency converter is closed, so that the air inducing device is electrified to start, heat in the cabinet body is extracted, and continuous temperature rise caused by heat accumulation in the cabinet body is prevented. According to the utility model, the technical problems that heat in the frequency conversion control cabinet is difficult to dissipate during calcium carbide production, and the calcium carbide furnace is forced to stop due to tripping of the fan caused by over-high temperature of the frequency conversion control cabinet during use are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to calcium carbide production equipment technical field, concretely relates to a fan equipment for calcium carbide production and calcium carbide production system. BACKGROUND

[0002] Calcium carbide is an important industrial chemical, and is widely used in manufacturing acetylene, calcium chloride, ammonium chloride and other chemicals, and steelmaking and other fields. In the production process of calcium carbide, due to the high-temperature reaction of raw materials, gas products including coal gas, acetylene, chlorine and the like will be produced. These gas products have the characteristics of being flammable and toxic, and if left unchecked, they will pose a serious safety threat to on-site personnel. Therefore, in the production process of calcium carbide, a fan is generally used to extract the gas products produced in the calcium carbide furnace, and the extracted gas products are sent to a combustion tower for combustion.

[0003] In the prior art, the fan generally has a frequency conversion control cabinet, which is used to protect and control the operation of the fan. In the continuous production process of calcium carbide, the fan continuously works to extract the generated gas products, and the frequency conversion control cabinet of the fan also continuously works to ensure the stability of the rotational speed and voltage of the fan.

[0004] However, since the frequency conversion control cabinet continuously generates heat during continuous operation, and the surrounding environment temperature is also increased during the production process of calcium carbide, the heat in the frequency conversion control cabinet is difficult to dissipate, and in the process of use, the fan is often tripped due to the excessively high temperature of the frequency conversion control cabinet, which forces the calcium carbide furnace to be shut down. SUMMARY

[0005] In order to solve the technical problem that the heat in the frequency conversion control cabinet is difficult to dissipate, the fan is tripped due to the excessively high temperature of the frequency conversion control cabinet in the process of use, and the calcium carbide furnace is forced to be shut down in the background art, the utility model provides a fan equipment for calcium carbide production and a calcium carbide production system.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, this utility model provides a blower device for calcium carbide production, the blower device including a blower and a frequency converter control cabinet; the blower is connected to a calcium carbide furnace; the frequency converter control cabinet includes a cabinet body, a frequency converter, an induced draft device, and a relay; the frequency converter is disposed in the cabinet body and is electrically connected to the blower; the induced draft device is fixedly disposed on the cabinet body and is connected to the interior of the cabinet body; the relay is electrically connected to the frequency converter and the induced draft device; when the transmission temperature of the frequency converter is higher than a first temperature value, the relay closes, and the induced draft device is energized; when the transmission temperature of the frequency converter drops to a second temperature value, the relay returns to its normally open state, and the induced draft device is de-energized.

[0008] Optionally, the air-expelling device is fixedly installed on the top of the cabinet.

[0009] Optionally, the air-exhaust device includes an axial flow fan and an air-exhaust duct; one end of the air-exhaust duct is connected to the top of the cabinet, and the other end is away from the cabinet; the axial flow fan is disposed inside the air-exhaust duct, and the axial flow fan is electrically connected to the relay.

[0010] Optionally, a ventilation opening is also provided at the bottom of the cabinet, and the ventilation opening is connected to the interior of the cabinet.

[0011] Optionally, a filter screen is provided on the vent.

[0012] Secondly, this utility model also provides a calcium carbide production system, which includes a calcium carbide furnace and a blower device for calcium carbide production as described above, wherein the blower device is connected to the calcium carbide furnace.

[0013] The beneficial effects of this utility model are:

[0014] This invention provides a blower device for calcium carbide production. The blower, connected to the calcium carbide furnace, extracts the gaseous products generated during production, creating a negative pressure environment within the furnace. Simultaneously, an induced draft device is installed on the cabinet, interlocked with the inverter's transmission temperature via a relay. During continuous operation, when the inverter's internal transmission temperature reaches a preset first temperature value, the normally open switch of the interlock relay in the inverter's control circuit closes, energizing the induced draft device to extract heat from the control cabinet and prevent heat buildup that could cause further temperature increases. Conversely, when the inverter's internal transmission temperature drops to a preset second temperature value, the normally open switch of the interlock relay in the inverter's control circuit returns to its normal open state, de-energizing and shutting down the induced draft device, thus ceasing heat extraction from the cabinet. This invention solves the technical problem of heat dissipation difficulties in the inverter control cabinet during calcium carbide production, which leads to blower tripping due to overheating of the control cabinet and forced shutdown of the calcium carbide furnace.

[0015] Meanwhile, in this utility model, when the transmission temperature inside the frequency converter drops to the preset second temperature value, the normally open switch of the interlocking relay in the control circuit of the frequency converter returns to normal open, causing the exhaust fan to lose power and shut down, thereby stopping the exhaust cooling of the cabinet. Thus, the automatic cooling is started and stopped according to the temperature in the cabinet, which not only prevents the temperature in the cabinet from getting too high, but also avoids the energy consumption problem caused by the continuous operation of the exhaust fan. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the blower equipment used in calcium carbide production according to this utility model;

[0017] The components include: 1. Fan; 2. Calcium carbide furnace; 3. Cabinet; 31. Ventilation opening; 32. Filter screen; 4. Frequency converter; 5. Exhaust fan; 51. Axial flow fan; 52. Exhaust duct; 6. Relay. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0021] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Firstly, see [the following] Figure 1 This diagram illustrates a blower device for calcium carbide production as described in this application. The blower device includes a blower 1 and a frequency converter control cabinet. The blower 1 is connected to a calcium carbide furnace 2. The frequency converter control cabinet includes a cabinet 3, a frequency converter 4, an induced draft device 5, and a relay 6. The frequency converter 4 is installed inside the cabinet 3 and is electrically connected to the blower 1. The induced draft device 5 is fixedly installed on the cabinet 3 and is connected to the interior of the cabinet 3. The relay 6 is electrically connected to the frequency converter 4 and the induced draft device 5. When the transmission temperature of the frequency converter 4 is higher than a first temperature value, the relay 6 switches from a normally open state to a closed state, and the induced draft device 5 is energized. When the transmission temperature of the frequency converter 4 drops to a second temperature value, the relay 6 returns to a normally open state, and the induced draft device 5 is de-energized.

[0026] In this embodiment, a blower 1 is connected to a calcium carbide furnace 2 to extract the gaseous products generated during the calcium carbide production process, creating a negative pressure environment inside the furnace 2. Simultaneously, an exhaust fan 5 is installed on the cabinet 3. A relay 6 interlocks the exhaust fan 5 with the transmission temperature of the frequency converter 4, specifically the transmission temperature of the insulated gate bipolar transistor (IGBT) in the frequency converter 4. During continuous operation, when the transmission temperature inside the frequency converter 4, particularly the IGBT, reaches a preset first temperature value, the normally open switch of the control circuit interlock relay 6 in the frequency converter 4 closes, energizing the exhaust fan 5 to extract heat from the cabinet 3, preventing heat buildup and further temperature increases. When the transmission temperature inside the frequency converter 4 drops to a preset second temperature value, the normally open switch of the control circuit interlock relay 6 in the frequency converter 4 returns to its normally open state, de-energizing the exhaust fan 5 and stopping the exhaust cooling of the cabinet 3. This invention solves the technical problem that the heat in the cabinet 3 of the frequency converter control cabinet is difficult to dissipate during calcium carbide production, and the fan 1 trips due to the excessive temperature in the cabinet 3, forcing the calcium carbide furnace 2 to shut down.

[0027] Meanwhile, in this utility model, when the transmission temperature inside the inverter 4 drops to the preset second temperature value, the normally open switch of the control circuit interlock relay 6 in the inverter 4 returns to normal open, causing the exhaust fan 5 to lose power and shut down, thereby stopping the exhaust cooling of the cabinet 3. Thus, the automatic cooling is started and stopped according to the temperature in the cabinet 3, which not only prevents the temperature in the cabinet 3 from getting too high, but also avoids the energy consumption problem caused by the continuous operation of the exhaust fan 5.

[0028] Specifically, in this embodiment, the first temperature value can be between 40 degrees Celsius and 50 degrees Celsius, and can be selected as 40 degrees Celsius, 45 degrees Celsius, or 50 degrees Celsius; the second temperature value can be between 25 degrees Celsius and 35 degrees Celsius, and can be selected as 25 degrees Celsius, 30 degrees Celsius, or 35 degrees Celsius. It should be noted that those skilled in the art can select the specific values ​​of the first and second temperature values ​​according to actual production and usage needs. This embodiment only provides an example of possible selections.

[0029] Specifically, in this embodiment, the frequency converter 4 can be selected as an ACS510-01 frequency converter, and the relay 6 can be selected as an RXM24VDC relay.

[0030] Specifically, the blower 1 in this embodiment may include a coarse air blower and a clean air blower arranged in sequence, and a settling assembly is also provided between the coarse air blower and the calcium carbide furnace to settle particulate impurities in the calcium carbide furnace; multiple filters are also provided between the clean air blower and the coarse air blower.

[0031] Optionally, the air-guiding device 5 in this utility model is fixedly installed on the top of the cabinet 3.

[0032] Optionally, refer to Figure 1 The air-expelling device 5 in this utility model includes an axial flow fan 51 and an air-expelling pipe 52; one end of the air-expelling pipe 52 is connected to the top of the cabinet 3, and the other end is away from the cabinet 3; the axial flow fan 51 is installed inside the air-expelling pipe 52, and the axial flow fan 51 is electrically connected to the relay 6.

[0033] In this embodiment, the axial flow fan 51 draws air from the cabinet 3, and the drawn hot air is guided to a location away from the cabinet 3 through the exhaust pipe 52. Specifically, the exhaust pipe 52 can be led outside the calcium carbide production workshop to reduce the temperature impact on the surrounding environment of the cabinet 3 and further reduce the temperature of the environment where the cabinet 3 is located.

[0034] Optionally, the lower part of the cabinet 3 in this utility model is also provided with a ventilation opening 31, which connects to the interior of the cabinet 3.

[0035] In this embodiment, a ventilation opening 31 is provided at the lower part of the cabinet 3. When the cabinet 3 is ventilated by the air extraction device 5, external air is allowed to enter the cabinet 3 through the ventilation opening 31 to form a circulation.

[0036] Optionally, a filter screen 32 is provided on the vent 31 in this utility model.

[0037] In this embodiment, a filter 32 is provided on the vent 31 to filter the air entering the cabinet 3, thereby reducing the entry of dust and other contaminants.

[0038] Secondly, this utility model also provides a calcium carbide production system, which includes a blower device for calcium carbide production, which includes a calcium carbide furnace 2 or any one of the above. The blower device is connected to the calcium carbide furnace 2.

[0039] It should be noted that the blower equipment used for calcium carbide production in the calcium carbide production system in this embodiment has the same structure as the blower equipment provided above, and its usage and beneficial effects are also the same, so it will not be described again here.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fan device for calcium carbide production, characterized by, The fan equipment comprises a fan (1) and a frequency conversion control cabinet; The fan (1) is communicated with a calcium carbide furnace (2); The frequency conversion control cabinet comprises a cabinet body (3), a frequency converter (4), an air guiding device (5) and a relay (6); The frequency converter (4) is arranged in the cabinet body (3), and the frequency converter (4) is electrically connected with the fan (1); The air guiding device (5) is fixedly arranged on the cabinet body (3) and communicated with the inside of the cabinet body (3); The relay (6) is electrically connected with the frequency converter (4) and the air guiding device (5); When the transmission temperature of the frequency converter (4) is higher than a first temperature value, the relay (6) is closed, and the air guiding device (5) is powered on; when the transmission temperature of the frequency converter (4) drops to a second temperature value, the relay (6) returns to the normal open state, and the air guiding device (5) is powered off.

2. The fan apparatus for calcium carbide production according to claim 1, characterized in that, The air guiding device (5) is fixedly arranged on the top of the cabinet body (3).

3. The fan apparatus for calcium carbide production according to claim 2, characterized in that, The air guiding device (5) comprises an axial flow fan (51) and an air guiding pipe (52); One end of the air guiding pipe (52) is communicated with the top of the cabinet body (3), and the other end is away from the cabinet body (3); The axial flow fan (51) is arranged in the air guiding pipe (52), and the axial flow fan (51) is electrically connected with the relay (6).

4. The fan apparatus for calcium carbide production according to claim 2, characterized in that, The cabinet body (3) is further provided with a ventilation opening (31) at the lower part, and the ventilation opening (31) is communicated with the inside of the cabinet body (3).

5. The fan apparatus for calcium carbide production according to claim 4, characterized in that, A filter screen (32) is arranged on the ventilation opening (31).

6. A calcium carbide production system characterized by, The calcium carbide production system comprises a calcium carbide furnace (2) and the fan equipment for calcium carbide production according to any one of claims 1 to 5, and the fan (1) in the fan equipment is communicated with the calcium carbide furnace (2).

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