Temperature control device for sound insulation cover of oxygen production air compressor

Abstract

The utility model discloses a temperature control device for a sound insulation cover of an oxygen production air compressor, which comprises a temperature measurement probe, an intelligent temperature controller, an axial flow fan operation box and a plurality of axial flow fans, and the temperature measurement probe is connected with the intelligent temperature controller and uploads acquired temperature signals to the intelligent temperature controller. The intelligent temperature controller is connected with the axial flow fan operation box to control the axial flow fan operation box, and the axial flow fan operation box is connected with the multiple axial flow fans and controls the multiple axial flow fans respectively. According to the utility model, the on-off control of the axial flow fan is carried out through real-time temperature feedback, and when the temperature reaches the stop temperature, the axial flow fan automatically stops, so that the electric energy loss of the axial flow fan is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a temperature control device, in particular to a temperature control device for the sound insulation cover of an oxygen-making air compressor, belonging to the technical field of steelmaking. Background Art

[0002] Equipment operation has certain requirements for the ambient temperature. Generally, the extreme operating temperature of automatic control equipment is -10 - 50°C, the normal operating temperature is 0 - 40°C, and the optimal operating temperature is 20 - 25°C. Too high or too low temperature will have a greater impact on the service life and health of equipment operation. The oxygen-making air compressor will generate serious noise during operation, so a sound insulation cover is needed for noise isolation. However, when the equipment is running, a large amount of heat will be generated. Due to the installation of the sound insulation cover, the temperature inside the sound insulation cover is relatively high. After actual measurement, the temperature reaches about 50°C in summer, about 25°C in winter, and about 33°C in other seasons. The heat dissipation of the air compressor sound insulation cover is carried out by 8 axial fans with a power of 3KW each. The start and stop of the axial fans are all manually controlled by the operator according to the temperature inside the sound insulation cover. Since the above equipment all has precision electronic instruments, the axial fans are in operation for most of the time to ensure that the equipment does not operate at a relatively high temperature. However, except for running 24 hours in summer, it is not necessary to run 24 hours in the other three quarters. If the axial fans are not stopped in time, it will cause waste of electric energy and increase the operation cost. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a temperature control device for the sound insulation cover of an oxygen-making air compressor, which reduces the waste of electric energy of the axial fans of the sound insulation cover.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is:

[0005] A temperature control device for the sound insulation cover of an oxygen-making air compressor includes a temperature measuring probe, an intelligent temperature controller, an axial fan operation box and a plurality of axial fans. The temperature measuring probe is connected to the intelligent temperature controller and uploads the collected temperature signal to the intelligent temperature controller. The intelligent temperature controller is connected to the axial fan operation box to control the axial fan operation box. The axial fan operation box is connected to a plurality of axial fans and controls the plurality of axial fans respectively.

[0006] Further, a power switch, a changeover switch, a start button, a stop button and a start indicator light are arranged on the front side of the axial fan operation box. The power switch, the changeover switch and the stop button are arranged in parallel on the upper side of the front side of the axial fan operation box. The start button and the start indicator light are arranged on the lower side of the front side of the axial fan operation box.

[0007] Further, several of the start indicator lights are distributed in a rectangular array on the front side of the axial flow fan operation box. The number of start buttons is the same as that of the start indicator lights, and the start buttons are arranged one by one below the start indicator lights.

[0008] Further, an axial flow fan control circuit is provided in the axial flow fan operation box.

[0009] Further, the axial flow fan control circuit includes a power switch SE, a manual-automatic switching circuit, a stop circuit, a first axial flow fan control circuit - an nth axial flow fan control circuit, and a cut-off circuit. One end of the power switch SE is connected to the L phase of the AC power supply, and the other end of the power switch SE is connected to one end of the manual-automatic switching circuit and one end of the stop circuit. The other end of the stop circuit is connected to one end of the first axial flow fan control circuit - the nth axial flow fan control circuit and one end of the cut-off circuit.

[0010] Further, the manual-automatic switching circuit includes a changeover switch SA, a manual control relay KA1, and an automatic control relay KA2. One end of the first path of the changeover switch SA and one end of the second path of the changeover switch SA are connected to the other end of the power switch SE. The other end of the first path of the changeover switch SA is connected to one end of the manual control relay KA, and the other end of the second path of the changeover switch SA is connected to one end of the automatic control relay KA2. The other ends of the manual control relay KA1 and the automatic control relay KA2 are connected to the N phase of the AC power supply.

[0011] Further, the stop circuit includes a stop button KW. One end of the stop button KW is connected to one end of the first normally open contact of the manual control relay KA1 and the other end of the power switch SE, and the other end of the stop button KW is connected to the other end of the first normally open contact of the manual control relay KA1.

[0012] Further, the first axial flow fan control circuit includes an axial flow fan control relay KM1 and a start button SF1. One end of the start button SF1 is connected to the other end of the stop button KW, one end of the first normally open contact of the axial flow fan control relay KM1, and one end of the normally open contact of the stop button KW. The other end of the start button SF1 is connected to one end of the first normally open contact of the manual control relay KA1. The other end of the normally open contact of the stop button KW is connected to one end of the first normally open contact of the automatic control relay KA2. The other end of the first normally open contact of the manual control relay KA1 is connected to the other end of the first normally open contact of the axial flow fan control relay KM1, the other end of the first normally open contact of the automatic control relay KA2, one end of the second normally open contact of the automatic control relay KA2, and one end of the second normally open contact of the manual control relay KA1. The other end of the second normally open contact of the automatic control relay KA2 and the other end of the second normally open contact of the manual control relay KA1 are connected to one end of the axial flow fan control relay KM1. The other end of the axial flow fan control relay KM1 is connected to the N phase of the AC power supply.

[0013] Further, the circuit structures of the second axial flow fan control circuit - the nth axial flow fan control circuit are the same. The nth axial flow fan control circuit includes an axial flow fan control relay KMn and a start button SFn. One end of the start button SFn is connected to the other end of the stop button KW, one end of the nth normally open contact of the axial flow fan control relay KM1, and one end of the (n - 1)th normally open contact of the time relay KT. The other end of the start button SFn is connected to the other end of the nth normally open contact of the axial flow fan control relay KM1, the other end of the (n - 1)th normally open contact of the time relay KT, one end of the normally open contact of the axial flow fan control relay KM(n - 1), and one end of the (n + 1)th normally open contact of the manual control relay KA1. The other end of the normally open contact of the axial flow fan control relay KM(n - 1) is connected to one end of the (n + 1)th normally open contact of the automatic control relay KA2. The other end of the (n + 1)th normally open contact of the automatic control relay KA2 is connected to the other end of the (n + 1)th normally open contact of the manual control relay KA1 and one end of the axial flow fan control relay KMn. The other end of the axial flow fan control relay KMn is connected to the N phase of the AC power supply.

[0014] Further, the cutting circuit includes a time relay KT. One end of the n+2nd normally open contact of the automatic control relay KA2 is connected to the other end of the stop button KW. The other end of the n+2nd normally open contact of the automatic control relay KA2 is connected to one end of the normally closed contact of the axial flow fan control relay KMn. The other end of the normally closed contact of the axial flow fan control relay KMn is connected to one end of the n+1st normally open contact of the axial flow fan control relay KM1. The other end of the n+1st normally open contact of the axial flow fan control relay KM1 is connected to one end of the time relay KT. The other end of the time relay KT is connected to the N phase of the AC power supply.

[0015] Compared with the prior art, the present invention has the following advantages and effects:

[0016] 1. The present invention controls the opening and closing of the axial flow fan through real-time temperature feedback. When the temperature reaches the stop temperature, the axial flow fan automatically stops, effectively reducing the power consumption of the axial flow fan.

[0017] 2. The structure of the present invention is simple, realizing the automatic start and stop of the axial flow fan and reducing the labor cost of on-site personnel inspection.

[0018] 3. When the axial flow fan of the present invention is started, it is started in sequence, avoiding excessive instantaneous current caused by simultaneous start-up and damaging the equipment. Description of the Drawings

[0019] Figure 1 is a schematic diagram of a temperature control device for the sound insulation cover of an oxygen-making air compressor of the present invention.

[0020] Figure 2 is a circuit diagram of a temperature control device for the sound insulation cover of an oxygen-making air compressor of the present invention.

[0021] Figure 3 is a circuit diagram for controlling the axial flow fan of a temperature control device for the sound insulation cover of an oxygen-making air compressor of the present invention. Detailed Embodiments

[0022] In order to elaborate in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments. And, without creative efforts, the technical means or technical features in the embodiments of the present invention can be replaced. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0023] As Figure 1As shown in the figure, a temperature control device for the sound insulation cover of an oxygen-making air compressor of the present utility model includes a temperature measuring probe 1, an intelligent temperature controller 2, an axial flow fan operation box 3, and eight axial flow fans M1-M8. The temperature measuring probe 1 is connected to the intelligent temperature controller 2 and uploads the collected temperature signal to the intelligent temperature controller 2. The intelligent temperature controller 2 is connected to the axial flow fan operation box 3 to control the axial flow fan operation box 3. The axial flow fan operation box 3 is connected to the eight axial flow fans M1-M8 and controls the eight axial flow fans M1-M8 respectively.

[0024] On the front side of the axial flow fan operation box 3, there are a power switch SE, a changeover switch SA, start buttons SF1-SFn, a stop button KW, and a start indicator light 4. The power switch SE, the changeover switch SA, and the stop button KW are arranged side by side on the upper side of the front side of the axial flow fan operation box 3. The start buttons SF1-SFn and the start indicator light 4 are arranged on the lower side of the front side of the axial flow fan operation box 3.

[0025] The 8 start indicator lights 4 are distributed in a rectangular array on the front side of the axial flow fan operation box 3. The number of start buttons is the same as that of the start indicator lights, and the start buttons are arranged one by one below the corresponding start indicator lights 4. The start indicator light is connected in parallel with the corresponding axial flow fan control relay KMn.

[0026] An axial flow fan control circuit is arranged inside the axial flow fan operation box. As Figure 2 shown, the axial flow fan control circuit includes a power switch SE, a manual-automatic switching circuit, a stop circuit, a first axial flow fan control circuit - an nth axial flow fan control circuit, and a cut-off circuit. One end of the power switch SE is connected to the L phase of the AC power supply, and the other end of the power switch SE is connected to one end of the manual-automatic switching circuit and one end of the stop circuit. The other end of the stop circuit is connected to one end of the first axial flow fan control circuit - the nth axial flow fan control circuit and one end of the cut-off circuit.

[0027] The manual-automatic switching circuit includes a changeover switch SA, a manual control relay KA1, and an automatic control relay KA2. One end of the first path of the changeover switch SA and one end of the second path of the changeover switch SA are connected to the other end of the power switch SE. The other end of the first path of the changeover switch SA is connected to one end of the manual control relay KA1, and the other end of the second path of the changeover switch SA is connected to one end of the automatic control relay KA2. The other end of the manual control relay KA1 and the other end of the automatic control relay KA2 are connected to the N phase of the AC power supply.

[0028] The stop circuit includes a stop button KW. One end of the stop button KW is connected to one end of the first normally open contact of the manual control relay KA1 and the other end of the power switch SE, and the other end of the stop button KW is connected to the other end of the first normally open contact of the manual control relay KA1.

[0029] The first axial flow fan control circuit includes an axial flow fan control relay KM1 and a start button SF1. One end of the start button SF1 is connected to the other end of the stop button KW, one end of the first normally open contact of the axial flow fan control relay KM1, and one end of the normally open contact of the stop button KW. The other end of the start button SF1 is connected to one end of the first normally open contact of the manual control relay KA1. The other end of the normally open contact of the stop button KW is connected to one end of the first normally open contact of the automatic control relay KA2. The other end of the first normally open contact of the manual control relay KA1 is connected to the other end of the first normally open contact of the axial flow fan control relay KM1, the other end of the first normally open contact of the automatic control relay KA2, one end of the second normally open contact of the automatic control relay KA2, and one end of the second normally open contact of the manual control relay KA1. The other end of the second normally open contact of the automatic control relay KA2 and the other end of the second normally open contact of the manual control relay KA1 are connected to one end of the axial flow fan control relay KM1. The other end of the axial flow fan control relay KM1 is connected to the N phase of the AC power supply.

[0030] The circuit structures of the second axial flow fan control circuit - the nth axial flow fan control circuit are the same. The nth axial flow fan control circuit includes an axial flow fan control relay KMn and a start button SFn. One end of the start button SFn is connected to the other end of the stop button KW, one end of the nth normally open contact of the axial flow fan control relay KM1, and one end of the (n - 1)th normally open contact of the time relay KT. The other end of the start button SFn is connected to the other end of the nth normally open contact of the axial flow fan control relay KM1, the other end of the (n - 1)th normally open contact of the time relay KT, one end of the normally open contact of the axial flow fan control relay KM(n - 1), and one end of the (n + 1)th normally open contact of the manual control relay KA1. The other end of the normally open contact of the axial flow fan control relay KM(n - 1) is connected to one end of the (n + 1)th normally open contact of the automatic control relay KA2. The other end of the (n + 1)th normally open contact of the automatic control relay KA2 is connected to the other end of the (n + 1)th normally open contact of the manual control relay KA1 and one end of the axial flow fan control relay KMn. The other end of the axial flow fan control relay KMn is connected to the N phase of the AC power supply.

[0031] The cutting-off circuit includes a time relay KT. One end of the normally open contact No. n + 2 of the automatic control relay KA2 is connected to the other end of the stop button KW. The other end of the normally open contact No. n + 2 of the automatic control relay KA2 is connected to one end of the normally closed contact of the axial flow fan control relay KMn. The other end of the normally closed contact of the axial flow fan control relay KMn is connected to one end of the normally open contact No. n + 1 of the axial flow fan control relay KM1. The other end of the normally open contact No. n + 1 of the axial flow fan control relay KM1 is connected to one end of the time relay KT. The other end of the time relay KT is connected to the N phase of the AC power supply.

[0032] As Figure 3 shown, the axial flow fans M1 - M8 are respectively controlled by the three-phase normally open contacts of the corresponding axial flow fan control relays KM1 - KMn.

[0033] When the power switch SE on the axial flow fan operation box 3 is turned on, the selector switch SA is selected for automatic or manual mode. If the manual mode is selected, the start buttons SF1 - SFn can be directly pressed for starting. The start buttons respectively correspond to 8 on-site axial flow fans. After pressing the start buttons SF1 - SFn one by one, the corresponding axial flow fans start to run. When it is necessary to stop the axial flow fans, press the stop button KW, and all the axial flow fans stop running. This mode is the manual operation mode.

[0034] When the power switch SE on the axial flow fan operation box 3 is turned on and the selector switch SA is selected, when the automatic mode is selected, if the start button is pressed again at this time, the on-site axial flow fans cannot start running. At this time, the on-site temperature probe 1 starts to detect the on-site ambient temperature and uploads the on-site ambient temperature to the intelligent temperature controller 2, which makes a logical judgment. When the on-site temperature exceeds the start temperature of the intelligent temperature controller 2, the intelligent temperature controller 2 controls the axial flow fan M1 to start running. At this time, the axial flow fan M2 meets the start condition. After the delay of the cyclic time relay KT, the axial flow fan M2 starts to run. When the axial flow fan M2 starts to run, the axial flow fan M3 meets the start condition. After the delay of the cyclic time relay KT, the axial flow fan M3 starts to run. This cycle continues until the axial flow fan M8 starts to run. After the axial flow fan M8 starts up, the cyclic time relay KT is powered off to stop the cycle. At this time, all 8 axial flow fans M1 - M8 have started up.

[0035] The utility model controls the start and stop of the axial flow fan through real-time temperature feedback. When the temperature reaches the stop temperature, the axial flow fan automatically stops, effectively reducing the power loss of the axial flow fan. The structure of the utility model is simple, realizing the automatic start and stop of the axial flow fan and reducing the labor cost of on-site personnel inspection. When the axial flow fan of the utility model is started, it is started in sequence, avoiding excessive instantaneous current caused by simultaneous start-up and damaging the equipment.

[0036] The above are only the preferred embodiments of the utility model, and do not impose any form of limitation on the utility model. Although the utility model has been disclosed above with the preferred embodiments, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the utility model. However, as long as it does not depart from the content of the technical solution of the utility model and is based on the technical essence of the utility model, any simple modification, equivalent replacement and improvement of the above embodiments still fall within the protection scope of the technical solution of the utility model.

Claims

1. An oxygen-making air compressor sound insulation cover temperature control device, characterized in that: It includes a temperature measuring probe, an intelligent temperature controller, an axial flow fan operation box and several axial flow fans. The temperature measuring probe is connected to the intelligent temperature controller and uploads the collected temperature signal to the intelligent temperature controller. The intelligent temperature controller is connected to the axial flow fan operation box to control the axial flow fan operation box. The axial flow fan operation box is connected to several axial flow fans and controls several axial flow fans respectively.

2. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 1, characterized in that: A power switch, a changeover switch, a start button, a stop button and a start indicator light are arranged on the front side of the axial flow fan operation box. The power switch, the changeover switch and the stop button are arranged side by side on the upper side of the front side of the axial flow fan operation box. The start button and the start indicator light are arranged on the lower side of the front side of the axial flow fan operation box.

3. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 2, wherein: Several of the start indicator lights are distributed in a rectangular array on the front side of the axial flow fan operation box. The number of start buttons is the same as that of the start indicator lights, and the start buttons are arranged one by one corresponding to the lower sides of the start indicator lights.

4. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 2, characterized in that: An axial flow fan control circuit is arranged in the axial flow fan operation box.

5. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 4, characterized in that: The axial flow fan control circuit includes a power switch SE, a manual-automatic switching circuit, a stop circuit, a first axial flow fan control circuit - an nth axial flow fan control circuit and a cut-off circuit. One end of the power switch SE is connected to the L phase of the AC power supply, and the other end of the power switch SE is connected to one end of the manual-automatic switching circuit and one end of the stop circuit. The other end of the stop circuit is connected to one end of the first axial flow fan control circuit - the nth axial flow fan control circuit and one end of the cut-off circuit.

6. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 5, characterized in that: The manual-automatic switching circuit includes a changeover switch SA, a manual control relay KA1 and an automatic control relay KA2. One end of the first path of the changeover switch SA and one end of the second path of the changeover switch SA are connected to the other end of the power switch SE. The other end of the first path of the changeover switch SA is connected to one end of the manual control relay KA1. The other end of the second path of the changeover switch SA is connected to one end of the automatic control relay KA2. The other end of the manual control relay KA1 and the other end of the automatic control relay KA2 are connected to the N phase of the AC power supply.

7. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 6, characterized in that: The stop circuit includes a stop button KW. One end of the stop button KW is connected to one end of the first normally open contact of the manual control relay KA1 and the other end of the power switch SE. The other end of the stop button KW is connected to the other end of the first normally open contact of the manual control relay KA1.

8. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 7, characterized in that: The first axial flow fan control circuit includes an axial flow fan control relay KM1 and a start button SF1. One end of the start button SF1 is connected to the other end of the stop button KW, one end of the first normally open contact of the axial flow fan control relay KM1, and one end of the normally open contact of the stop button KW. The other end of the start button SF1 is connected to one end of the first normally open contact of the manual control relay KA1. The other end of the normally open contact of the stop button KW is connected to one end of the first normally open contact of the automatic control relay KA2. The other end of the first normally open contact of the manual control relay KA1 is connected to the other end of the first normally open contact of the axial flow fan control relay KM1, the other end of the first normally open contact of the automatic control relay KA2, one end of the second normally open contact of the automatic control relay KA2, and one end of the second normally open contact of the manual control relay KA1. The other end of the second normally open contact of the automatic control relay KA2 and the other end of the second normally open contact of the manual control relay KA1 are connected to one end of the axial flow fan control relay KM1. The other end of the axial flow fan control relay KM1 is connected to the N phase of the AC power supply.

9. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 8, characterized in that: The circuit structures of the second axial flow fan control circuit - the nth axial flow fan control circuit are the same. The nth axial flow fan control circuit includes an axial flow fan control relay KMn and a start button SFn. One end of the start button SFn is connected to the other end of the stop button KW, one end of the nth normally open contact of the axial flow fan control relay KM1, and one end of the (n - 1)th normally open contact of the time relay KT. The other end of the start button SFn is connected to the other end of the nth normally open contact of the axial flow fan control relay KM1, the other end of the (n - 1)th normally open contact of the time relay KT, one end of the normally open contact of the axial flow fan control relay KM(n - 1), and one end of the (n + 1)th normally open contact of the manual control relay KA1. The other end of the normally open contact of the axial flow fan control relay KM(n - 1) is connected to one end of the (n + 1)th normally open contact of the automatic control relay KA2. The other end of the (n + 1)th normally open contact of the automatic control relay KA2 is connected to the other end of the (n + 1)th normally open contact of the manual control relay KA1 and one end of the axial flow fan control relay KMn. The other end of the axial flow fan control relay KMn is connected to the N phase of the AC power supply.

10. The temperature control device for the sound insulation cover of an oxygen-making air compressor according to claim 9, characterized in that: The cut-off circuit includes a time relay KT. One end of the (n + 2)th normally open contact of the automatic control relay KA2 is connected to the other end of the stop button KW. The other end of the (n + 2)th normally open contact of the automatic control relay KA2 is connected to one end of the normally closed contact of the axial flow fan control relay KMn. The other end of the normally closed contact of the axial flow fan control relay KMn is connected to one end of the (n + 1)th normally open contact of the axial flow fan control relay KM1. The other end of the (n + 1)th normally open contact of the axial flow fan control relay KM1 is connected to one end of the time relay KT. The other end of the time relay KT is connected to the N phase of the AC power supply.

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