CN215895250U - Control circuit of data center cold channel skylight with alarm system - Google Patents
Control circuit of data center cold channel skylight with alarm system Download PDFInfo
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- CN215895250U CN215895250U CN202122012314.1U CN202122012314U CN215895250U CN 215895250 U CN215895250 U CN 215895250U CN 202122012314 U CN202122012314 U CN 202122012314U CN 215895250 U CN215895250 U CN 215895250U
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Abstract
The utility model relates to the technical field of data center micromodules, and particularly discloses a control circuit of a data center cold channel skylight with an alarm system, which comprises a miniature circuit breaker, a 24V switching power supply, a first normally open and normally closed button, a second normally open and normally closed button, a first intermediate relay, a second intermediate relay, an electromagnetic contactor, an acousto-optic buzzer and a direct current electromagnet; the first intermediate relay comprises a first coil, a first movable contact, a second movable contact, a first fixed contact, a second fixed contact and a third fixed contact; the second intermediate relay comprises a second coil, a third movable contact, a fourth fixed contact and a fifth fixed contact; the electromagnetic contactor comprises a third coil and a main contact; the control circuit of the data center cold channel skylight with the alarm system, provided by the utility model, has a simple circuit structure and can meet the design requirements of products. The action of the skylight can be judged whether the action is caused by the output signal of the fire alarm or the misoperation caused by the power failure of the power supply.
Description
Technical Field
The utility model relates to the technical field of data center micromodules, in particular to a control circuit of a data center cold channel skylight with an alarm system.
Background
Generally, the cold aisle skylight of the data center is controlled by an electromagnet with direct current of 24V. The opening and closing of the skylight are formed by connecting a simple switching power supply, a switch, an intermediate relay and an electromagnet in series. In the traditional technology, an intermediate relay is driven by a fire alarm, and a power supply of an incoming line is directly cut off to open a skylight. Because the number of nodes in the whole circuit is large, the skylight misoperation caused by the line problem cannot be judged when the skylight acts, and the skylight opened by the action of the fire alarm device when small-scale smoke, overheating and the like really occur.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a control circuit of a data center cold channel skylight with an alarm system, which can judge whether the action of the skylight is the action of an output signal of a fire alarm or the misoperation caused by power failure of a power supply.
As a first aspect of the present invention, a control circuit of a data center cold aisle skylight with an alarm system is provided, which includes a 24V switching power supply, a first normally open and normally closed button SB1, a second normally open and normally closed button SB2, a first intermediate relay KA1, a second intermediate relay KA2, an electromagnetic contactor KM, an acousto-optic buzzer HA, and a direct current electromagnet YA; the first intermediate relay KA1 comprises a first coil, a first movable contact, a second movable contact, a first fixed contact, a second fixed contact and a third fixed contact, wherein the first movable contact and the first fixed contact are closed, and the second movable contact and the third fixed contact are opened; the second intermediate relay KA2 comprises a second coil, a third movable contact, a fourth fixed contact and a fifth fixed contact, wherein the third movable contact and the fourth fixed contact are closed; the electromagnetic contactor KM comprises a third coil and a main contact, the main contact being open;
one end of the first normally-open normally-closed button SB1, the first movable contact of the first intermediate relay KA1, the third movable contact of the second intermediate relay KA2 and one end of the main contact of the electromagnetic contactor KM are all connected with the positive pole of the 24V switching power supply, and one end of the first coil of the first intermediate relay KA1, one end of the acousto-optic buzzer HA, one end of the second coil of the second intermediate relay KA2, one end of the third coil of the electromagnetic contactor KM and one end of the direct current electromagnet YA are all connected with the negative pole of the 24V switching power supply;
the other end of the first normally-open normally-closed button SB1 is connected with the second stationary contact of the first intermediate relay KA1 and the other end of the first coil, the first stationary contact of the first intermediate relay KA1 is connected with the fifth stationary contact of the second intermediate relay KA2 and the other end of the acousto-optic buzzer HA, the fourth stationary contact of the second intermediate relay KA2 is connected with one end of the second normally-open normally-closed button SB2, the other end of the second normally-open normally-closed button SB2 is connected with the third stationary contact of the first intermediate relay KA1, the second movable contact of the first intermediate relay KA1 is connected with the other end of the third coil of the electromagnetic contactor KM, and the other end of the main contact of the electromagnetic contactor KM is connected with the other end of the dc electromagnet YA;
the other end of the second coil of the second intermediate relay KA2 is connected to the positive electrode of the 24V switching power supply through a terminal.
Further, the power supply further comprises a miniature circuit breaker QF1, and a live wire L and a zero wire N of commercial power are respectively connected to two ends of the 24V switching power supply through the miniature circuit breaker QF 1.
The control circuit of the data center cold channel skylight with the alarm system provided by the utility model has the following advantages: the device can receive the dry contact signal and the wet contact signal output by the fire alarm, and can judge whether the action of the skylight is the action caused by the output signal of the fire alarm or the false action caused by the power failure of the power supply.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.
FIG. 1 is an electrical schematic diagram of a control circuit for a data center cold aisle skylight with an alarm system according to the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the predetermined purpose of the utility model, the following detailed description will be given to the specific implementation, structure, features and effects of the control circuit of the data center cold aisle skylight with the alarm system according to the present invention with reference to the accompanying drawings and preferred embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the embodiment, a control circuit of a data center cold aisle skylight with an alarm system is provided, as shown in fig. 1, the control circuit of the data center cold aisle skylight with the alarm system comprises a 24V switching power supply, a first normally-open normally-closed button SB1, a second normally-open normally-closed button SB2, a first intermediate relay KA1, a second intermediate relay KA2, an electromagnetic contactor KM, an acousto-optic buzzer HA and a direct-current electromagnet YA; the first intermediate relay KA1 comprises a first coil, a first movable contact 6, a second movable contact 5, a first fixed contact 2, a second fixed contact 4 and a third fixed contact 3, wherein the first movable contact 6 and the first fixed contact 2 are closed, and the second movable contact 5 and the third fixed contact 3 are opened; the second intermediate relay KA2 comprises a second coil, a third movable contact 6, a fourth fixed contact 2 and a fifth fixed contact 4, wherein the third movable contact 6 and the fourth fixed contact 2 are closed; the electromagnetic contactor KM comprises a third coil and a main contact, and the main contact 1-2 is disconnected;
one end 23 point of the first normally-open normally-closed button SB1, the first movable contact 6 of the first intermediate relay KA1, the third movable contact 6 of the second intermediate relay KA2, and one end 1 point of the main contact of the electromagnetic contactor KM are all connected to the positive electrode of the 24V switching power supply, and one end 8 point of the first coil of the first intermediate relay KA1, one end X2 point of the acousto-optic buzzer HA, one end 8 point of the second coil of the second intermediate relay KA2, one end a2 point of the third coil of the electromagnetic contactor KM, and one end 2 point of the dc electromagnet YA are all connected to the negative electrode of the 24V switching power supply;
the other end 24 point of the first normally open and normally closed button SB1 is respectively connected to the second stationary contact 4 of the first intermediate relay KA1 and the other end 7 point of the first coil, the first stationary contact 2 of the first intermediate relay KA1 is respectively connected to the fifth stationary contact 4 of the second intermediate relay KA2 and the other end X1 point of the acousto-optic buzzer HA, the fourth stationary contact 2 of the second intermediate relay KA2 is connected to one end 11 point of the second normally open and normally closed button SB2, the other end 12 point of the second normally open and normally closed button SB2 is connected to the third stationary contact 3 of the first intermediate relay KA1, the second movable contact 5 of the first intermediate relay KA1 is connected to the other end a1 point of the third coil of the electromagnetic contactor KM, and the other end 2 point of the main contact of the electromagnetic contactor KM is connected to the other end 1 point of the direct current electromagnet YA;
the other end 7 point of the second coil of the second intermediate relay KA2 is connected to the positive electrode of the 24V switching power supply through terminals (XT: 3, XT: 15).
Preferably, the power supply further comprises a miniature circuit breaker QF1, and the live wire L and the neutral wire N of the commercial power are respectively connected to two ends of the 24V switching power supply through the miniature circuit breaker QF 1.
The control circuit of the data center cold channel skylight with the alarm system provided by the utility model adopts a switching power supply voltage reduction and rectification principle to convert AC 220V into DC 24V, realizes the on-off of an electromagnet circuit through a button and an intermediate relay, and realizes the alarm of an acousto-optic buzzer by switching the normally open function and the normally closed function of the intermediate relay. The circuit structure is simple, and the design requirement of the product can be met.
According to the control circuit of the data center cold channel skylight with the alarm system, AC 220V is connected to a 24V switching Power supply (DC Power) through an incoming line of a miniature circuit breaker QF1, commercial Power is converted into DC 24V voltage to supply Power to a rear-stage circuit, and a first normally-open normally-closed button SB1 is used for controlling the Power loss and Power acquisition of a coil of a first intermediate relay KA 1. The specific working principle is as follows:
(1) initial state: the coil of the first intermediate relay KA1 is powered off, the first movable contact 6 and the first fixed contact 2 of the first intermediate relay KA1 are closed, the acousto-optic buzzer HA sends out an alarm signal, the second movable contact 5 and the third fixed contact 3 of the first intermediate relay KA1 are disconnected, the coil of the electromagnetic contactor KM is powered off, the main contacts (1-2) of the electromagnetic contactor KM are disconnected, and the direct-current electromagnet YA does not work.
(2) Pressing the first normally open normally closed button SB 1: the coil of the first intermediate relay KA1 is electrified, the first movable contact 6 and the first fixed contact 2 of the first intermediate relay KA1 are disconnected, and the acousto-optic buzzer HA stops giving an alarm. The first movable contact 6 and the second stationary contact 4 of the first intermediate relay KA1 are closed. The second movable contact 5 and the third fixed contact 3 of the first intermediate relay KA1 are closed, the coil of the electromagnetic contactor KM is electrified, the main contacts (1-2) of the electromagnetic contactor KM are closed, and the direct current electromagnet YA starts to work.
(3) Releasing the first normally open and normally closed button SB 1: the first movable contact 6 and the second fixed contact 4 of the first intermediate relay KA1 are continuously closed to form a self-locking loop. The second movable contact 5 and the third stationary contact 3 of the first intermediate relay KA1 continue to be closed. The coil of the electromagnetic contactor KM is electrified, the main contact (1-2) of the electromagnetic contactor KM is continuously closed, and the direct current electromagnet YA continuously works.
(4) When the skylight needs to be opened, a second normally open and normally closed button SB2 is pressed: when the coil of the electromagnetic contactor KM loses power, the main contact (1-2) of the electromagnetic contactor KM is disconnected, and the direct current electromagnet YA stops working. The first movable contact 6 and the second fixed contact 4 of the first intermediate relay KA1 continue to be closed, the second movable contact 5 and the third fixed contact 3 of the first intermediate relay KA1 continue to be closed, the first movable contact 6 and the first fixed contact 2 of the first intermediate relay KA1 continue to be disconnected, and the acousto-optic buzzer HA continues to stop alarming.
(5) When the special conditions of channel temperature overheating, fire and the like are met. The external module sends a close point signal to the terminals (XT: 3, XT: 15). The coil of the second intermediate relay KA2 is electrified, the third movable contact 6 and the fourth fixed contact 2 of the second intermediate relay KA2 are disconnected, the coil of the electromagnetic contactor KM is electrified, the main contacts (1-2) of the electromagnetic contactor KM are disconnected, and the direct current electromagnet YA stops working. The third movable contact 6 and the fifth fixed contact 4 of the second intermediate relay KA2 are closed, and the acousto-optic buzzer HA sends out an alarm signal. At this time, the first movable contact 6 and the second fixed contact 4 of the first intermediate relay KA1 continue to be closed, the second movable contact 5 and the third fixed contact 3 of the first intermediate relay KA1 continue to be closed, and the first movable contact 6 and the first fixed contact 2 of the first intermediate relay KA1 continue to be opened. After the channel temperature is overheated and special conditions such as fire are contacted, the terminals (XT: 3, XT: 15) are restored to a normally open state, the coil of the second intermediate relay KA2 is de-energized, the third movable contact 6 and the fifth fixed contact 4 of the second intermediate relay KA2 are disconnected, the acousto-optic buzzer HA stops alarming, the third movable contact 6 and the fourth fixed contact 2 of the second intermediate relay KA2 are closed, the coil of the electromagnetic contactor KM is de-energized, the main contacts (1-2) of the electromagnetic contactor KM are closed, and the direct current electromagnet YA starts to work.
(6) When the mains supply is powered off: the coil of the first intermediate relay KA1 loses power, the first movable contact 6 and the first fixed contact 2 of the first intermediate relay KA1 are closed, and the acousto-optic buzzer HA cannot send out an alarm signal due to the fact that no energy source is input. The second movable contact 5 and the third fixed contact 3 of the first intermediate relay KA1 are disconnected, the coil of the electromagnetic contactor KM loses power, the main contacts (1-2) of the electromagnetic contactor KM are disconnected, the direct current electromagnet YA does not work, and the electromagnetic contactor enters an initial state after waiting for a power-on.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (2)
1. A control circuit of a data center cold channel skylight with an alarm system is characterized by comprising a 24V switching power supply, a first normally open and normally closed button SB1, a second normally open and normally closed button SB2, a first intermediate relay KA1, a second intermediate relay KA2, an electromagnetic contactor KM, an acousto-optic buzzer HA and a direct current electromagnet YA; the first intermediate relay KA1 comprises a first coil, a first movable contact, a second movable contact, a first fixed contact, a second fixed contact and a third fixed contact, wherein the first movable contact and the first fixed contact are closed, and the second movable contact and the third fixed contact are opened; the second intermediate relay KA2 comprises a second coil, a third movable contact, a fourth fixed contact and a fifth fixed contact, wherein the third movable contact and the fourth fixed contact are closed; the electromagnetic contactor KM comprises a third coil and a main contact, the main contact being open;
one end of the first normally-open normally-closed button SB1, the first movable contact of the first intermediate relay KA1, the third movable contact of the second intermediate relay KA2 and one end of the main contact of the electromagnetic contactor KM are all connected with the positive pole of the 24V switching power supply, and one end of the first coil of the first intermediate relay KA1, one end of the acousto-optic buzzer HA, one end of the second coil of the second intermediate relay KA2, one end of the third coil of the electromagnetic contactor KM and one end of the direct current electromagnet YA are all connected with the negative pole of the 24V switching power supply;
the other end of the first normally-open normally-closed button SB1 is connected with the second stationary contact of the first intermediate relay KA1 and the other end of the first coil, the first stationary contact of the first intermediate relay KA1 is connected with the fifth stationary contact of the second intermediate relay KA2 and the other end of the acousto-optic buzzer HA, the fourth stationary contact of the second intermediate relay KA2 is connected with one end of the second normally-open normally-closed button SB2, the other end of the second normally-open normally-closed button SB2 is connected with the third stationary contact of the first intermediate relay KA1, the second movable contact of the first intermediate relay KA1 is connected with the other end of the third coil of the electromagnetic contactor KM, and the other end of the main contact of the electromagnetic contactor KM is connected with the other end of the dc electromagnet YA;
the other end of the second coil of the second intermediate relay KA2 is connected to the positive electrode of the 24V switching power supply through a terminal.
2. The control circuit of the data center cold aisle skylight with the alarm system as claimed in claim 1, further comprising a micro breaker QF1, wherein the live line L and the neutral line N of the commercial power are respectively connected to two ends of the 24V switching power supply through the micro breaker QF 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122012314.1U CN215895250U (en) | 2021-08-25 | 2021-08-25 | Control circuit of data center cold channel skylight with alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122012314.1U CN215895250U (en) | 2021-08-25 | 2021-08-25 | Control circuit of data center cold channel skylight with alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215895250U true CN215895250U (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122012314.1U Active CN215895250U (en) | 2021-08-25 | 2021-08-25 | Control circuit of data center cold channel skylight with alarm system |
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| CN (1) | CN215895250U (en) |
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- 2021-08-25 CN CN202122012314.1U patent/CN215895250U/en active Active
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