CN213808181U

CN213808181U - Self-starting device of time relay control ventilator

Info

Publication number: CN213808181U
Application number: CN202022060258.4U
Authority: CN
Inventors: 谢元宁; 支显; 赵兴儒
Original assignee: Yuxi Mining Co ltd
Current assignee: Yuxi Mining Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-07-27
Anticipated expiration: 2030-09-18

Abstract

The utility model discloses a time relay control ventilation blower is from starting drive, ventilation blower control circuit includes time relay, normally open contact, normally closed contact, fuse and circuit breaker, time relay, normally open contact and normally closed contact are parallel relation, then they establish ties with fuse and circuit breaker, the ventilation blower start-up circuit includes control switch, coil, normally open main contact and three-phase cage type asynchronous machine, control switch establishes ties with the coil, the coil establishes ties with normally open main contact, normally open main contact establishes ties on asynchronous machine's tripolar, asynchronous machine ground connection. The utility model has the advantages that: the operation is simple and convenient, the waste of human and material resources is saved, and the equipment is automatically controlled to start and operate according to the set time requirement after being electrified.

Description

Self-starting device of time relay control ventilator

Technical Field

The utility model relates to a mine ventilation blower field, especially a time relay control ventilation blower self-starting device.

Background

At present, equipment in a ventilation work area is distributed a lot and wide, a war line is long, the fan is manually started when power is off every time on the premise that no vehicle exists, operating personnel need a long time when walking to the installation position of the fan, and the fan of equipment inspection personnel is extremely difficult to start, so that time and labor are wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the long shortcoming of ventilation blower start-up time, provide a time relay control ventilation blower self-starting device.

The purpose of the utility model is realized through the following technical scheme: a time relay controlled ventilator self-starting device comprises a ventilator control circuit and a ventilator starting circuit, wherein the ventilator control circuit comprises a main circuit A, a main circuit B, a branch circuit X, a branch circuit Y and a branch circuit Z, the branch circuit X, the branch circuit Y and the branch circuit Z are connected in parallel, a fuse e and a switch circuit breaker g are arranged on the main circuit A, a fuse f and a switch circuit breaker h are arranged on the main circuit B, one end of the main circuit A is connected to a zero line, one end of the main circuit B is connected to a fire line, the main circuit A and the main circuit B form a loop, the ventilator starting circuit is a three-phase circuit, one end of the three-phase circuit is connected to the fire line, the other end of the three-phase circuit is connected to the zero line, the other end of the three-phase circuit is connected to the ground line, the ventilator starting circuit is communicated with the ventilator control circuit, the branch circuit X is a time delay circuit, the branch circuit X comprises a branch circuit Xa and a branch Xb, the branch Xa is provided with a normally closed button switch, a normally open button switch and a coil operating device, the normally closed button switch, the normally open button switch and the coil operating device are connected in series, the branch circuit Xb is provided with an electrified delay attraction coil, the branch circuit Xa is connected with the branch circuit Xb in parallel, the branch circuit Xa comprises a branch circuit Xc and a branch circuit Xd, a normally open auxiliary contact p is arranged on the branch circuit Xc, a normally open contact for delayed disconnection is arranged on the branch circuit Xd, and the branch circuit Xc is connected with the branch circuit Xd in parallel.

Preferably, branch Y is work indicating circuit, and branch Y sets up normally open auxiliary contact s and status indicator lamp, and during the circular telegram, normally open auxiliary contact s is closed, and branch Y communicates, and status indicator lamp lights.

Preferably, branch Z is the outage indicating circuit, and branch Z sets up normally closed auxiliary contact and status instruction lamp, and during the outage, normally closed auxiliary contact closed, branch Z intercommunication, status instruction lamp are bright.

Preferably, the ventilator starting circuit comprises a three-phase circuit, the three-phase circuit is connected with a three-phase asynchronous motor, each phase of circuit of the three-phase circuit is provided with a circuit breaker, a motor protector and a normally open main contact, the circuit breaker is connected with the motor protector in series, the motor protector is connected with the normally open main contact in series, and the three-phase asynchronous motor is grounded through an external grounding wire.

Preferably, a grounding line is further arranged between the circuit breaker and the motor protector and is connected with a grounding wire of the three-phase circuit, a current transformer and an ammeter are arranged on the grounding line, and the ammeter is used for detecting a current value.

Preferably, the delay time of the electrified delay pick-up coil is set to be 5 to 10 minutes

The utility model has the advantages of it is following: after the power is interrupted and the power is restored each time, the equipment is automatically controlled to start and operate according to the set time requirement after being electrified, the operation is simple and convenient, and manpower and material resources are saved.

Drawings

Figure 1 is a schematic view of a self-starting structure of a ventilator

In fig. 1, 1-circuit breaker, 2-motor protector, 3-normally open main contact, 4-three-phase asynchronous motor, 5-switch circuit breaker g, 6-fuse e, 7-normally closed button switch, 8-normally open button switch, 9-coil operating device, 10-normally open auxiliary contact p, 11-time-delay break normally open contact, 12-power-on time-delay pull-in coil, 13-switch circuit breaker h, 14-fuse f, 15-normally open auxiliary contact s, 16-normally closed auxiliary contact, 17-state indicator lamp, 18-state instruction lamp.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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 present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figure 1, the ventilator self-starting device is controlled by a time relay and comprises a ventilator control circuit and a ventilator starting circuit, the ventilator control circuit comprises a main circuit A, a main circuit B, a branch circuit X, a branch circuit Y and a branch circuit Z, a fuse e6 and a switch circuit breaker g5 are arranged on the main circuit A, a fuse f14 and a switch circuit breaker h13 are arranged on the main circuit B, the fuse and the circuit breaker are used for protecting circuits and preventing equipment instruments from being damaged due to short circuits, when circuit current is too large, the fuse is broken or the circuit breaker acts, loop connection in the circuit is cut off, and the circuit is powered off. One end of a trunk circuit A is connected to a zero line, one end of a trunk circuit B is connected to a fire line, the trunk circuit A and the trunk circuit B form a loop, a branch circuit X is a delay loop and comprises a branch circuit Xa and a branch circuit Xb, the branch circuit Xa is provided with a normally closed button switch 7, a normally open button switch 8 and a coil operating device 9, the normally closed button switch 7 is closed in a power-off state, and the normally closed button switch 7 is opened due to action when the power is on; normally open button switch 8 is the disconnection under the outage state, during the circular telegram, normally open button switch 8 is closed because of the action, normally closed button switch 7, the connection between normally open button switch 8 and the coil operating device 9 is the series connection, branch circuit Xb sets up circular telegram time delay actuation coil 12, branch circuit Xa is parallelly connected with branch circuit Xb, branch circuit Xa includes branch circuit Xc and branch circuit Xd again, branch circuit Xc has set up normally open auxiliary contact 10, the electric current that auxiliary contact allowed to pass through is not big, generally 1-5A, branch circuit Xd is last to set up time delay disconnection's normally open contact 11, branch circuit Xc is parallelly connected with branch circuit Xd. A220V-380V control transformer is installed in a ventilator starting cabinet and is used for conveniently obtaining proper voltage, because the control transformer works by using an electromagnetic induction principle, the transformer is provided with two groups of coils, namely a primary coil and a secondary coil, the position relation is that the secondary coil is arranged outside the primary coil, when alternating current is conducted on the primary coil, an alternating magnetic field is generated by a transformer iron core, the secondary coil generates induced electromotive force, the turn ratio of the coils of the control transformer is equal to a voltage ratio, and the voltage ratio can be changed by changing the turn ratio.

The delay circuit has multiple working modes such as power-on delay, switch-on delay, power-off delay and switch-off delay, and the utility model mainly utilizes the power-on delay and switch-off delay functions, and is mainly realized by normally closed button switch 7, normally open button switch 8, normally open auxiliary contact 10, normally open contact 11, coil operating device 9, power-on delay actuation coil 12 of time delay disconnection. When the contactor works, the closed button switch 7 is switched off, the normally open button switch 8 is switched on, and when the contactor coil is switched off, the normally open button switch 8 is switched off, and the normally closed button switch 7 is switched on and reset. Normally open auxiliary contact 10 and normally open button switch 8 and parallelly connected, the normally open contact 11 of time delay disconnection also parallelly connected with normally open button switch 8, sets up time relay's circular telegram time delay actuation coil 12 time again according to on-the-spot needs, just so does not need the manual work to start, for the maintenance convenience, has installed a button as time relay's switch next door stop button.

The working process of the utility model is as follows: when the three-phase cage-type asynchronous motor is electrified, the normally open auxiliary contact 15 on the branch Y is closed, the status indicator lamp 17 on the branch Y is on, the normally closed auxiliary contact 16 on the branch Z is off, the status indicator lamp 18 on the branch Z is off, the branch X is communicated with the starting circuit within 5 to 10 minutes under the action of the electrified delayed pull-in coil 12, the control circuit is communicated and then forms a loop with the starting circuit, the normally open contact 3 on the starting circuit is closed, and the circuit is communicated to supply power to the three-phase cage-type asynchronous motor 4; during the outage, the normally open auxiliary contact 15 disconnection on the branch road Y, status indicator lamp 17 on the branch road Y goes out, and normally closed auxiliary contact 16 on the branch road Z is closed, and status indicator lamp 18 on the branch road Z is bright, and branch road X is under time delay disconnection normally open contact 11's effect, and branch road X disconnection in the set time, control circuit and starting circuit interrupt, the disconnection of the last normally open contact 3 of starting circuit, three-phase cage type asynchronous machine 4 stop work, consequently, the utility model provides following effect:

(1) after the time relay is installed, the equipment is automatically controlled to start and operate according to the set time requirement after being electrified.

(2) When the equipment is overhauled, only a power switch for controlling the transformer needs to be pulled down, and then a stop key is pressed, so that the operation is simple and convenient.

(3) The waste of manpower and material resources is saved, and various safety risks of the ventilator starting personnel on the way after power failure maintenance and power restoration are avoided.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a time relay control ventilation blower self-starting drive which characterized in that: including ventilation blower control circuit and ventilation blower starting circuit, ventilation blower control circuit includes main road A, main road B, branch road X, branch road Y and branch road Z, branch road X branch road Y for parallelly connecting between the branch road Z, be provided with fuse e (6) and switch circuit breaker g (5) on the main road A, be provided with fuse f (14) and switch circuit breaker h (13) on the main road B, main road A's termination is on zero line, main road B's one end is on fire line, main road A and main road B form a return circuit, ventilation blower starting circuit includes three-phase circuit, one connects on fire line, one connects on zero line, one connects on the ground, ventilation blower starting circuit with ventilation blower control circuit switches on, branch road X is the time delay return circuit, branch road X includes branch road Xa and branch Xb, branch Xa sets up normally closed button switch (7), Normally open button switch (8) and coil operating means (9), normally closed button switch (7) normally open button switch (8) with for establishing ties between coil operating means (9), branch road Xb sets up circular telegram time delay actuation coil (12), branch road Xa with branch road Xb is parallelly connected, branch road Xa includes branch road Xc and branch road Xd again, normally open auxiliary contact p (10) have been set up on the branch road Xc, set up time delay disconnection's normally open contact (11) on the branch road Xd, branch road Xc with branch road Xd is parallelly connected.

2. A time relay controlled ventilator self-starting device according to claim 1, characterized in that: branch road Y is work indicating circuit, branch road Y sets up normally open auxiliary contact s (15) and status indicator lamp (17), and during the circular telegram, normally open auxiliary contact s (15) are closed, and branch road Y communicates, status indicator lamp (17) are bright.

3. A time relay controlled ventilator self-starting device according to claim 1, characterized in that: branch circuit Z is outage indicating circuit, branch circuit Z sets up normally closed auxiliary contact (16) and status command lamp (18), and during the outage, normally closed auxiliary contact (16) are closed, branch circuit Z intercommunication, status command lamp (18) are bright.

4. A time relay controlled ventilator self-starting device according to claim 1, characterized in that: the ventilator starting circuit comprises a three-phase circuit, the three-phase circuit is connected with a three-phase asynchronous motor (4), each phase circuit of the three-phase circuit is provided with a circuit breaker (1), a motor protector (2) and a normally-opened main contact (3), the circuit breaker (1) is connected with the motor protector (2) in series, the motor protector (2) is connected with the normally-opened main contact (3) in series, and the three-phase asynchronous motor (4) is grounded through an external ground wire.

5. A time relay controlled ventilator self-starting device according to claim 4, characterized in that: the circuit breaker (1) with still set up the ground connection route between the motor protector (2), the ground connection route with the earth connection of three-phase circuit is connected, current transformer and ampere meter have been set up on the ground connection route, the ampere meter is used for detecting current value.

6. A time relay controlled ventilator self-starting device according to claim 1, characterized in that: the delay time of the electrifying delay attracting coil (12) is set to be 5 to 10 minutes.