CN215188060U

CN215188060U - Centralized inverter container cooling system fault alarm device

Info

Publication number: CN215188060U
Application number: CN202121410416.2U
Authority: CN
Inventors: 陈晓东; 辛悦
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-12-14
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a centralized dc-to-ac converter container cooling system fault alarm device, the device includes: the air switch is connected with the alternating current contactor and used for controlling the power supply or the power cut of the motor control loop, and the relay is connected with the current transformer to form an alarm function loop and used for controlling the on-off of the alarm function loop according to the received switching value; the running state of the motor is monitored in real time, and the alarm is given at the first time when the heat dissipation system breaks down, so that the equipment safety is ensured, and the maximum economic benefit is also ensured.

Description

Centralized inverter container cooling system fault alarm device

Technical Field

The utility model belongs to the technical field of new forms of energy photovoltaic power generation technique and specifically relates to a centralized dc-to-ac converter container cooling system malfunction alerting device is related to.

Background

For the operation of the inverter, the temperature is an important safety factor influencing the stable operation of the inverter, the existing centralized inverter container mainly radiates heat through a fan, and when the inverter operates in a high-temperature environment, whether a radiating system can normally work is very important. When the inverter operates at high temperature, if one fan heat motor breaks down, the temperature in the inverter container can rise rapidly, the inverter module can be frequently reported to break down due to overhigh temperature, the inverter module cannot work, even internal elements can be damaged, the aging of cable insulation is accelerated, and potential safety hazards are caused. However, the current centralized inverter container cannot timely find and feed back the fault that the running state of the fan motor is abnormal and the temperature of the inverter is higher than the limit, and the fault is reported by the module each time, and the reason that the fan heater fan does not work is found when the fault arrives at the site inspection, so that the temperature of the inverter container exceeds the limit. This kind of condition appears at every turn, all will shut down the dc-to-ac converter the very first time and let the container temperature reduce rapidly during the maintenance, then change heat exhausting fan, such working process not only causes the potential safety hazard to equipment, has still produced a lot of unnecessary loss electric quantities moreover, influences economic benefits.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centralized dc-to-ac converter container cooling system malfunction alerting device aims at solving present centralized dc-to-ac converter container and can not in time discover and the problem of feedback to fan motor's the operating condition unusual and the trouble that the dc-to-ac converter temperature exceeds the restriction.

The utility model provides a centralized inverter container cooling system malfunction alerting device, include: the motor control circuit comprises a temperature controller, an alternating current contactor and a motor which are sequentially connected and used for controlling starting and stopping of the motor, the current transformer is connected with the motor control circuit and used for detecting the current in the motor control circuit, the air switch is connected with the alternating current contactor and used for controlling the power supply or the power outage of the motor control circuit, and the relay is connected with the current transformer to form an alarm function circuit and used for controlling the on-off of the alarm function circuit according to the received switching value.

Further, the alarm function loop further comprises a temperature and humidity monitor, and the temperature and humidity monitor is connected with the relay and used for sending an alarm signal to the background.

Further, the air switch is provided with an air switch contact and an air switch auxiliary contact, wherein the air switch contact is in a normally closed state, and the air switch auxiliary contact is in a normally open state.

Further, the relay is provided with a relay contact and a relay auxiliary contact, wherein the contacts are in a normally open state, and the relay auxiliary contact is in a normally closed state.

Further, the device also comprises an indicator light, wherein the indicator light is connected with the relay and is used for indicating the current running state of the motor.

Furthermore, the device also comprises a 24V power supply module which is used for supplying power to the alarm function loop.

Further, the temperature controller is specifically configured to: and determining the conducted limiting temperature according to the setting of the background database.

Further, the air switch auxiliary contact is closed when the air switch contact is opened.

Further, the relay auxiliary contact is opened when the relay contact is electrically closed.

Adopt the technical scheme of the utility model, can carry out real time monitoring to motor running state to add the overtemperature alarm function of temperature, improve the warning rate of accuracy, send alarm information to the backstage in the very first time that cooling system broke down, very big shortening the time of finding the trouble, maintainer can arrive the scene in the shortest time and carry out the troubleshooting, reduce down time, avoided the dc-to-ac converter module trouble, both guaranteed equipment safety and also guaranteed the biggest economic benefits.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic diagram of a motor control loop according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a centralized inverter container cooling system fault alarm device according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a motor main circuit wiring of a centralized inverter container cooling system fault alarm device according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a centralized inverter container cooling system fault alarm function circuit wiring according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an alarm function implementing structure according to an embodiment of the present invention.

Description of reference numerals:

WK1, WK 2: a temperature controller; KM1, KM 2: an AC contactor; m: a motor; CT: a current transformer; CT1, CT 2: an auxiliary contact of the current transformer; KA: an intermediate relay; QF1, QF 2: an air switch; QF1 ', QF 2': an air switch auxiliary contact; HL1, HL2, HL3, HL 4: an indicator light; WS: temperature and humidity monitor.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a centralized dc-to-ac converter container cooling system malfunction alerting device, include: the intelligent alarm system comprises a motor control loop, a current transformer CT, a relay KA, air switches QF1 and QF2, wherein the motor control loop comprises a temperature controller WK1, a temperature controller WK2, an alternating current contactor KM1, an alternating current contactor KM2 and a motor M which are sequentially connected and used for controlling starting and stopping of the motor, the current transformer CT is connected with the motor control loop and used for detecting the current in the motor control loop, the air switches QF1 and QF2 are connected with the alternating current contactors KM1 and KM2 and used for controlling power supply or power failure of the motor control loop, the relay KA and the current transformer CT, air switch auxiliary contacts QF3 and QF4 form an alarm function loop, and the relay KA controls the on-off of the alarm function loop according to the received switching quantities of the current transformer CT, the air switch auxiliary contacts QF3 and QF 4.

The schematic diagram of the motor control loop principle is shown in fig. 1, the motor control loop is powered by 220V alternating current, and the motor control loop specifically includes: the temperature controllers WK1 and WK2 and the alternating current contactors KM1 and KM2, the temperature controllers WK1 and WK2 determine the limit temperature of conduction according to the setting of a background database, the limit temperature is set to 45 ℃ in the embodiment, when the temperature controllers WK1 and WK2 detect that the temperature in the centralized inverter container exceeds 45 ℃, the auxiliary contacts of the temperature controllers WK1 and WK2 are closed, the alternating current contactors KM1 and KM2 are controlled to be electrified, and the motor is started; when the temperature controllers WK1 and WK2 detect that the temperature in the centralized inverter container is lower than 45 ℃, the auxiliary contacts of the temperature controllers WK1 and WK2 are disconnected, the alternating current contactors KM1 and KM2 are controlled to be powered off, and the motor stops.

Fig. 3 is a schematic wiring diagram of a main circuit of a motor of a fault alarm device of a container cooling system of a centralized inverter, as shown in fig. 3, QF3 and QF4 are normally closed auxiliary contacts of air switches QF1 and QF2, the air switches are in a normally closed state, the air switches are in a normally open state, and the air switches are closed when the air switches are disconnected; the KM3 and the KM4 are normally open auxiliary contacts of the AC contactor, and when the auxiliary contacts of the temperature controllers WK1 and WK2 are closed/opened and the AC contactors KM1 and KM2 are controlled to be electrified/powered off, the auxiliary contacts KM3 and KM4 are closed/opened to start/stop the motor M.

Fig. 2 is the utility model discloses centralized inverter container cooling system malfunction alerting device principle sketch, as shown in fig. 2, control motor M starts to drive the fan operation and dispels the heat when temperature controller WK1, WK2 reach the start temperature 45 ℃ that sets up, if current transformer CT detects that motor control return circuit in the electric current is less than 0.1A, current transformer auxiliary contact CT1, CT2 are closed, auxiliary relay KA switches on, makes its normally closed auxiliary contact disconnection, loses the electricity and reports to the police; if the current in the motor control loop is too large, the air switches QF1 and QF2 are disconnected for other elements in the protection circuit, the auxiliary contacts QF3 and QF4 of the air switches are closed, the intermediate relay KA is switched on, the normally closed auxiliary contact is disconnected, and power-off alarm is carried out.

Fig. 4 is a schematic diagram of a connection of a fault alarm function loop of a centralized inverter container cooling system according to an embodiment of the present invention, as shown in fig. 4, a 24V power supply supplies power to the alarm function loop, and indicator lamps HL1, HL2, HL3, and HL4 are sequentially connected to the power supply and an intermediate relay KA, in the present embodiment, the inverter container includes two inverters and two power distribution cabinets, that is, two fans and motors thereof, so HL1 is a motor operation indicator lamp No. 1, HL2 is a motor fault indicator lamp No. 1, HL3 is a motor operation indicator lamp No. 2, and HL4 is a motor fault indicator lamp No. 2. The two motor controllers are respectively connected with the intermediate relays KA1 and KA2, the two current transformers CT are both connected with the 24V power supply and the intermediate relays KA, and the intermediate relays KA1, KA2, KA3, KA4 and KA5 receive switching value signals of the motor controllers and the current transformers CT, control the corresponding indicator lamps to be on and send fault alarm signals to a background.

The structure that this embodiment realized sending trouble alarm signal to the back end and carried out the warning of losing power is shown in fig. 5, including auxiliary relay KA normally closed contact and temperature and humidity monitor WS, this embodiment uses temperature and humidity monitor WS to send alarm signal to the back end, and when auxiliary relay KA switched on in fig. 2, auxiliary relay KA normally closed contact disconnection, temperature and humidity monitor WS gives the backstage with voltage change signal transmission, realizes losing power and reports to the police.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A centralized inverter container cooling system fault alarm device, characterized by, includes: the motor control circuit comprises a temperature controller, an alternating current contactor and a motor which are sequentially connected and used for controlling starting and stopping of the motor, the current transformer is connected with the motor control circuit and used for detecting the current in the motor control circuit, the air switch is connected with the alternating current contactor and used for controlling the power supply or the power outage of the motor control circuit, and the relay is connected with the current transformer to form an alarm function circuit and used for controlling the on-off of the alarm function circuit according to the received switching value.

2. The centralized inverter container cooling system fault alarm device of claim 1, wherein the alarm function loop further comprises a temperature and humidity monitor, and the temperature and humidity monitor is connected to the relay and configured to send an alarm signal to a background.

3. The centralized inverter container cooling system fault warning device of claim 1, wherein the air switch is provided with an air switch contact and an air switch auxiliary contact, wherein the air switch contact is in a normally closed state and the air switch auxiliary contact is in a normally open state.

4. The centralized inverter container cooling system fault warning device of claim 2, wherein the relay is provided with relay contacts and relay auxiliary contacts, wherein the contacts are in a normally open state and the relay auxiliary contacts are in a normally closed state.

5. The centralized inverter container cooling system fault warning device of claim 1, further comprising an indicator light coupled to the relay for indicating a current operating status of the motor.

6. The centralized inverter container cooling system fault warning device of claim 1, further comprising a 24V power module for powering the alarm function loop.

7. The centralized inverter container cooling system fault warning device of claim 1, wherein the temperature controller is specifically configured to: and determining the conducted limiting temperature according to the setting of the background database.

8. The centralized inverter container cooling system fault warning device of claim 3, wherein the air switch auxiliary contacts are closed when the air switch contacts are open.

9. The centralized inverter container cooling system fault warning device of claim 4, wherein the relay auxiliary contacts are open when the relay contacts are electrically closed.