Mining explosion-proof refrigeration electrical principle control box

Abstract

The utility model relates to the technical field of mining explosion prevention, in particular to a mining explosion-proof refrigeration electrical principle control box. Comprising a PIR device, a relay and a CPU chip. The PIR devices are in one-to-one correspondence with the controlled devices; the PIR device is electrically connected with a three-phase line of the controlled device; the PIR device is electrically connected with the CPU chip; the relays are in one-to-one correspondence with the controlled devices; the relay is electrically connected with the PIR device; and the relay is electrically connected with the C phase of the controlled device. In the prior art, control over an air feeder, a compressor and a condensation fan mainly depends on an electric control switch, and safety is relatively poor. Compared with the prior art, the state of the controlled device is obtained in time through the PIR device, control is carried out through the CPU chip, and when the controlled device is abnormal, the controlled device is cut off in time through the relay. Therefore, abnormal equipment is effectively prevented from influencing underground safety, and the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mine explosion -proof, especially relates to mine explosion -proof refrigeration electrical principle control box. BACKGROUND

[0002] In order to effectively exploit the mineral under the stratum, need according to the distribution of mine stratum is excavated in the underground mine, mine is the formation underground coal mine production system's well lane, chamber, equipment, ground building and structure general term.Through the mine, for staff under the stratum provides sufficient work and storage space.

[0003] Under the influence of stratum pressure, ventilation condition etc., the temperature under the mine is relatively higher.Under high temperature, it can cause the discomfort of staff, also easily cause equipment damage or underground combustion.This can seriously affect the work efficiency of staff, also can seriously endanger the safety of mine.Therefore, the underground needs to be equipped with corresponding refrigeration equipment to guarantee the safety of underground production, improve the working environment of underground staff.Usually, the air blower, compressor, condensing fan are used in the mine to carry out the refrigeration collocation.Although the preceding equipment can effectively refrigerate, but the control of the preceding equipment relies on electric control switch.When the preceding equipment is abnormal, the control of the preceding equipment is not timely.Therefore, the safety is relatively poor.When the preceding equipment is applied in coal mine and other special environments, if abnormal situation cannot be controlled in time, the safety of mine and underground staff is easily endangered. UTILITY MODEL CONTENT

[0004] In view of the technical problem of prior art, the utility model provides mine explosion -proof refrigeration electrical principle control box.

[0005] To solve the above technical problem, the utility model provides the following technical scheme:

[0006] Mine explosion -proof refrigeration electrical principle control box, include: PIR device, relay, CPU chip;PIR device and controlled device one to one correspondence;PIR device and controlled device's three phase line electric connection;PIR device and CPU chip electric connection;Relay and controlled device one to one correspondence;Relay and PIR device electric connection;Relay and controlled device's C phase electric connection.

[0007] Further, it further includes auxiliary chip, auxiliary control structure;Auxiliary control structure and controlled device electric connection;Auxiliary control structure and auxiliary chip electric connection;Auxiliary chip and CPU chip electric connection.

[0008] Further, the auxiliary chip includes a blower auxiliary chip, a compressor auxiliary chip, and a condenser fan auxiliary chip; the auxiliary control structure includes an outlet air temperature sensor, a return air temperature sensor, a low-voltage switch, a high-voltage switch, and an exhaust temperature sensor; the outlet air temperature sensor and the return air temperature sensor are electrically connected to the blower auxiliary chip; the low-voltage switch and the high-voltage switch are electrically connected to the compressor auxiliary chip; the exhaust temperature sensor is electrically connected to the condenser fan auxiliary chip; and the blower auxiliary chip, the compressor auxiliary chip, and the condenser fan auxiliary chip are electrically connected to the CPU chip.

[0009] Further, the auxiliary chip further includes a backup chip; the auxiliary control structure further includes a backup low-voltage switch; the backup low-voltage switch is electrically connected to the backup chip; and the backup chip is electrically connected to the CPU chip.

[0010] Further, the auxiliary chip further includes a backup chip; the auxiliary control structure further includes a backup low-voltage switch; the backup low-voltage switch is electrically connected to the backup chip; and the backup chip is electrically connected to the CPU chip.

[0011] Further, the auxiliary chip further includes a backup chip; the auxiliary control structure further includes a backup low-voltage switch; the backup low-voltage switch is electrically connected to the backup chip; and the backup chip is electrically connected to the CPU chip.

[0012] Further, the auxiliary chip further includes a backup chip; the auxiliary control structure further includes a backup low-voltage switch; the backup low-voltage switch is electrically connected to the backup chip; and the backup chip is electrically connected to the CPU chip.

[0013] Further, the auxiliary chip further includes a backup chip; the auxiliary control structure further includes a backup low-voltage switch; the backup low-voltage switch is electrically connected to the backup chip; and the backup chip is electrically connected to the CPU chip. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 : PIR circuit diagram.

[0015] Figure 2 : CPU circuit diagram.

[0016] Figure 3 : Auxiliary chip circuit diagram. DETAILED DESCRIPTION

[0017] The following is a specific embodiment of the present application and further describes the technical solution of the present application in combination with the accompanying drawings, but the present application is not limited to these embodiments.

[0018] The mine explosion-proof refrigeration electrical principle control box comprises a PIR device (comprehensive protector), a relay, a CPU chip, an auxiliary chip, an auxiliary control structure, a touch screen, an operation indicator lamp, a phase sequence protector, a high-voltage converter, and a low-voltage converter. The controlled devices comprise a blower, a compressor, and a condenser fan. The three-phase lines of the controlled devices are electrically connected with the three-phase lines of the AC380V power supply. The phase sequence protector (XJ12 is adopted) is electrically connected with the three-phase lines of the power supply. If the three-phase lines of the controlled devices and the power supply are connected in error, the phase sequence protector can effectively protect the entire line, thereby improving the safety of the entire line. On the other hand, the touch screen is electrically connected with the CPU chip. The operation indicator lamp is electrically connected with the CPU chip. Thus, the current state of the entire line can be effectively obtained by the staff.

[0019] The PIR device corresponds to the controlled device one by one. The PIR device is electrically connected with the three-phase line of the controlled device. The PIR device is electrically connected with the CPU chip. The relay (labeled as KA1-3 in the drawing) corresponds to the controlled device one by one. The relay is electrically connected with the PIR device. The relay is electrically connected with the C phase of the controlled device. Thus, the running state of the corresponding controlled device can be obtained by the PIR device, and the running state is fed back to the CPU chip. The CPU chip can judge whether the current running state is abnormal. When the running state of a controlled device is judged to be abnormal, the CPU chip controls the corresponding relay to cut off the controlled device with abnormal running state through the corresponding PIR device. Thus, the abnormal controlled device is prevented from continuously running, thereby endangering the safety of the mine and the staff.

[0020] The auxiliary control structure is electrically connected with the controlled device. The auxiliary control structure is electrically connected with the auxiliary chip. The auxiliary chip is electrically connected with the CPU chip. Specifically, the auxiliary chip includes a blower auxiliary chip (EX1 in the drawing, model EXTI-22), a compressor auxiliary chip (EX2 in the drawing, model EXDI-22), a condenser fan auxiliary chip (EX4 in the drawing, model EXTI-22), and a backup chip (EX3 in the drawing, model EXDI-22). The auxiliary control structure includes an outlet air temperature sensor, a return air temperature sensor, a low-voltage switch, a high-voltage switch, an exhaust temperature sensor, and a backup low-voltage switch. The outlet air temperature sensor and the return air temperature sensor are electrically connected with the blower. The outlet air temperature sensor and the return air temperature sensor are electrically connected with the blower auxiliary chip. The low-voltage switch and the high-voltage switch are electrically connected with the compressor. The low-voltage switch and the high-voltage switch are electrically connected with the compressor auxiliary chip. The exhaust temperature sensor is electrically connected with the condenser fan. The exhaust temperature sensor is electrically connected with the condenser fan auxiliary chip. The backup low-voltage switch is electrically connected with the compressor. The backup low-voltage switch is electrically connected with the backup chip. Meanwhile, the blower auxiliary chip, the compressor auxiliary chip, the condenser fan auxiliary chip, and the backup chip are electrically connected with the CPU chip. Thus, the corresponding parameters of the controlled device are controlled by the auxiliary chip and the CPU chip, so that the corresponding relay is controlled by the CPU chip to cut off the abnormal controlled device in time when the controlled device is abnormal, thereby further improving the safety.

[0021] The high-voltage converter adopts an AC380V to AC220V converter. The input end of the high-voltage converter is electrically connected with the power supply, thereby outputting an AC220V voltage. The output end of the high-voltage converter is electrically connected with the PIR device to support the normal operation of the PIR device. Meanwhile, the output end of the high-voltage converter is electrically connected with the low-voltage converter. The low-voltage converter adopts an AC220V to DC24V converter, thereby outputting a DC24V voltage. The output end of the low-voltage converter is electrically connected with the CPU chip and the auxiliary chip to maintain the normal operation of the CPU chip and the auxiliary chip. Thus, the circuit is simplified to the maximum extent, thereby reducing the risk of abnormality of the circuit itself.

[0022] It is worth noting that the CPU chip and the auxiliary chip have certain control capabilities, and the existing technology can realize the processing and control process of the corresponding data. The specific control mechanism is not described here.

[0023] In summary, the controlled device is controlled from multiple different angles, thereby controlling abnormal conditions in time, and further maximizing the safety.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. An explosion-proof electrical control box for mine refrigeration, characterized in that: Comprise: PIR device, relay, CPU chip; The PIR device corresponds to the controlled device one by one; The PIR device is electrically connected with the three-phase line of the controlled device; The PIR device is electrically connected with the CPU chip; The relay corresponds to the controlled device one by one; The relay is electrically connected with the PIR device; The relay is electrically connected with the C phase of the controlled device.

2. The mine explosion-proof refrigeration electrical principle control box according to claim 1, characterized in that: Also including auxiliary chip, auxiliary control structure; The auxiliary control structure is electrically connected with the controlled device; The auxiliary control structure is electrically connected with the auxiliary chip; The auxiliary chip is electrically connected with the CPU chip.

3. The mine explosion-proof electrical control box for refrigeration according to claim 2, characterized in that: The auxiliary chip includes blower auxiliary chip, compressor auxiliary chip, condenser fan auxiliary chip; The auxiliary control structure includes air outlet temperature sensor, return air temperature sensor, low voltage switch, high voltage switch, exhaust temperature sensor; The air outlet temperature sensor and the return air temperature sensor are electrically connected with the blower auxiliary chip; The low voltage switch and the high voltage switch are electrically connected with the compressor auxiliary chip; The exhaust temperature sensor is electrically connected with the condenser fan auxiliary chip; The blower auxiliary chip, the compressor auxiliary chip and the condenser fan auxiliary chip are electrically connected with the CPU chip.

4. The mine explosion-proof electrical control box for refrigeration according to claim 3, characterized in that: The auxiliary chip also includes standby chip; The auxiliary control structure also includes standby low voltage switch; The standby low voltage switch is electrically connected with the standby chip; The standby chip is electrically connected with the CPU chip.

5. The mine explosion-proof electrical control box for refrigeration according to claim 1, characterized in that: Also including touch screen, running indicator light; The touch screen is electrically connected with the CPU chip; The running indicator light is electrically connected with the CPU chip.

6. The mine explosion-proof electrical control box for refrigeration of claim 1, wherein: Also including phase sequence protector; The phase sequence protector is electrically connected with the three-phase line of the power supply.

7. The mine explosion-proof electrical control box of claim 1 to 6, wherein: Also including high voltage converter; The output end of the high voltage converter is electrically connected with the PIR device.

8. The mine explosion-proof electrical control box for refrigeration according to claim 7, characterized in that: Also including low voltage converter; The low voltage converter is electrically connected with the output end of the high voltage converter; The output end of the low voltage converter is electrically connected with the CPU chip.

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