CN217741022U

CN217741022U - Subway is with ring accuse electric cabinet convenient to maintain

Info

Publication number: CN217741022U
Application number: CN202221356097.6U
Authority: CN
Inventors: 虞忠新; 曾巍; 赵鑫; 赵丙辰
Original assignee: Hebei Electric Power Equipment Co ltd
Current assignee: Hebei Electric Power Equipment Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-11-04
Anticipated expiration: 2032-06-01

Abstract

The utility model provides a subway is with ring accuse electric cabinet convenient to maintain, relate to track traffic equipment technical field, operating system on the spot including the touch-sensitive screen, the photoelectric conversion system, the CPU system, communication interface system A, communication interface system B, distributed IO system, motor protector, soft starter, the converter, intelligent component such as touch-sensitive screen, the CPU system passes through the ethernet interface and links to each other with BAS control system, it is provided by two sections generating lines of low pressure distribution system respectively to solve current two tunnel power, also there is the setting of single circuit power, but it mainly supplies power for the second grade load, and then can not satisfy the problem in the chain use of ring accuse, the strict subregion in ring accuse electric cabinet primary circuit and secondary control return circuit, electrified return circuit effectively protects, convenient to overhaul and reduced maintenance personal's electric shock risk effectively.

Description

Subway is with ring accuse electric cabinet convenient to maintain

Technical Field

The utility model belongs to the technical field of the rail transit equipment, more specifically say, in particular to ring accuse electric cabinet for subway convenient to maintain.

Background

The environment-controlled electric control cabinet is mainly a low-voltage power distribution cabinet for providing power supply for ventilation air-conditioning equipment in subway stations and sections, and because the proportion of ventilation air-conditioning load in a power supply is very large, an independent environment-controlled electric control room can be arranged in places with concentrated equipment load, such as a combined air conditioner and a TVF fan, when the design is carried out, if the distance between the low-voltage electric distribution room and the environment-controlled large load is not far, the low-voltage electric control cabinet can also be directly powered by the low-voltage power distribution cabinet, namely, the environment-controlled electric control room and the low-voltage electric distribution room are jointly built, and under the background that urban rail transit in China rapidly increases, the subway environment-controlled cabinet is used as an indispensable important component of a subway power supply system and has great market potential.

The existing ring control power supply is generally led to a ring control electric control room by a power distribution loop of a low-voltage distribution room through a cable, a power distribution system of the ring control electric control room generally adopts a double-circuit power supply, the double-circuit power supply is respectively led by two sections of buses of the low-voltage distribution system, and a single-circuit power supply is also arranged, but the single-circuit power supply mainly supplies power for a secondary load and further cannot meet the interlocking use of ring control.

Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and a ring-controlled electric control cabinet for a subway, which is convenient to maintain, is provided, so as to achieve the purpose of having more practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a subway is with ring accuse electric cabinet convenient to maintain to solve two way current power and provide by two sections generating lines of low pressure distribution system respectively, also have the setting of single power, nevertheless it mainly supplies power for the second grade load, and then can not satisfy the problem of the chain use of ring accuse.

The utility model relates to a subway is with purpose and efficiency of ring accuse electric cabinet convenient to maintain is reached by following concrete technical means:

a subway ring control electric control cabinet convenient to maintain comprises a touch screen local operating system, a photoelectric conversion system, a CPU system, a communication interface system A, a communication interface system B, intelligent elements such as a distributed IO system, a motor protector, a soft starter, a frequency converter and a touch screen, wherein the CPU system is connected with a BAS control system through an Ethernet interface, the CPU is equivalent to a hub of BAS system control commands, the motor protector and the soft starter are connected with the communication interface system through a PROFIBUS-DP communication bus and used for reading the running state of related equipment and start and stop control of the related equipment, and the distributed IO system is used for collecting the states of a fan and an air valve, sending the states to the BAS system through the CPU system and controlling the on and off of the fan and the air valve according to the on and off commands of the BAS system.

Furthermore, the touch screen local operation system comprises a normally open contact of a valve opening relay, and the normally open contact of the valve opening relay is connected into a control loop of the motor protector.

Furthermore, an indicating circuit A, a blast gate interlocking valve closing signal circuit B, an indicating circuit B and an indicating circuit C are further arranged in the touch screen local operating system, the indicating circuit A comprises a valve closing process flickering indicating circuit, a valve opening process flickering indicating circuit and a fault indicating circuit, and a blast gate closing-in-place relay normally-closed contact and a valve closing process flickering indicating lamp are connected in series in the valve closing process flickering indicating circuit; a normally closed contact of a wind valve in-place opening relay and a flashing indicating lamp in the valve opening process are connected in series in the flashing indicating loop in the valve opening process; the fault indication circuit is connected with a normally open contact of the air valve fault relay and a valve opening fault indication lamp in series, the indication circuit B comprises a valve closing indication circuit and a valve opening indication circuit, the valve closing indication lamp in the valve closing indication circuit is connected with the relevant valve relay in parallel, and the valve opening indication lamp in the valve opening indication circuit is connected with the valve opening relay in parallel.

Furthermore, the touch screen local operation system comprises an air valve, the interlocking between the air valve and the fan is realized through a relay circuit, the relay circuit comprises an air valve control loop and a fan control loop, and a contactor KM for controlling the start and stop of the fan, a normally open contact of a motor protector MB and a normally open contact of the air valve are connected in series in the fan control loop; the air valve interlocking valve closing loop comprises a normally closed contact of the in-place closing intermediate relay KA2 and a normally closed contact of the fan contactor KM, the air valve opening loop is connected with the normally closed contact of the in-place opening intermediate relay KA1 in series, and after the air valve is opened in place, the normally closed contact of the KA1 is opened, and the air valve is powered off.

Furthermore, a cable channel for penetrating a secondary cable and a communication cable of the air valve and the fan is arranged on the side face of the touch screen local operation system.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. dual supply inlet wire cabinet among the ring accuse electric cabinet sets up the innovation with a big door plant and improves for three door plants that correspond the compartment, when overhauing arbitrary power of all the way, can not influence other all the way, sets up special tool to lock simultaneously, ensures personnel's safety when making things convenient for the maintenance.

2. The primary loop and the secondary control loop of the environment-friendly electric control cabinet are strictly partitioned, and the electrified loop is effectively protected, so that the maintenance is facilitated, and the electric shock risk of maintenance personnel is effectively reduced.

3. The rear of the ring-controlled electric control cabinet is provided with secondary terminals for taking electricity from the main bus bar A/B/C/N, so that the L/N of each control loop in the cabinet is connected to the secondary terminals, and the holes of the copper bar at the upper opening of the main switch of each loop and the holes of the zero row are reduced.

4. The environment-controlled electric control cabinet acquires the working states of the air valve and the fan through a distributed IO system in the existing cabinet body, controls the opening and closing of the air valve and the fan according to the opening and closing command of the CPU, namely, adopts the distributed IO and the CPU to carry out communication, and has simple structure and simple and convenient control.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of the structure inside the cabinet of the present invention.

Fig. 2 is a schematic structural diagram of the air valve control circuit of the present invention.

Fig. 3 is a schematic diagram of the structure of the fan control circuit of the present invention.

Fig. 4 is a schematic view of the cabinet structure of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. the touch screen locally operates the system; 2. a photoelectric conversion system; 3. a CPU system; 4. a communication interface system A; 5. a communication interface system B; 6. an air valve opening loop; 7. the air valve is interlocked to close the valve loop; 8. a normally open contact of the valve opening relay; 9. an indication circuit A; 10. the air valve interlocking closes the valve signal loop B; 11. an indication circuit B; 12. an indication circuit C; 13. a control loop of the motor protector; 14. a side door; 15. the top of the cabinet body.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are provided to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment is as follows:

as shown in figures 1 to 4:

the utility model provides a subway is with ring accuse electric cabinet convenient to maintain, including touch-sensitive screen operating system 1 on the spot, photoelectric conversion system 2, CPU system 3, communication interface system A4, communication interface system B5, distributed IO system, motor protector, soft starter, the converter, intelligent component such as touch-sensitive screen, CPU system 3 passes through the ethernet interface and links to each other with BAS control system, CPU is equivalent to the hub and distribution center of BAS system control command, motor protector and soft starter link to each other through the communication interface system that PROFIBUS-DP communication bus with, a control is opened and stop for reading the running state of relevant equipment and relevant equipment, distributed IO system is used for gathering the state of fan and blast gate and sends to BAS system and according to the switch command control fan of BAS system and blast gate through CPU system 3.

Referring to fig. 1-2, the touch screen local operation system 1 includes an air valve, and interlocking between the air valve and a fan is implemented through a relay circuit, where the relay circuit includes an air valve control loop and a fan control loop, and a contactor KM for controlling start and stop of the fan, a normally open contact of a motor protector MB, and a normally open contact of the air valve are connected in series in the fan control loop; the air valve interlocking closing circuit 7 comprises a normally closed contact of an in-position closing intermediate relay KA2 and a normally closed contact of a fan contactor KM, the air valve opening circuit 6 is connected with the normally closed contact of the in-position opening intermediate relay KA1 in series, after an air valve is opened in place, the normally closed contact of the KA1 is opened, the air valve is powered off, an indicating circuit A9, an air valve interlocking closing signal circuit B10, an indicating circuit B11 and an indicating circuit C12 are further arranged in the touch screen on-site operation system 1, the indicating circuit A9 comprises a valve closing process flicker indicating circuit, a valve opening process flicker indicating circuit and a fault indicating circuit, and the air valve in-position closing relay normally closed contact and a valve closing process flicker indicating lamp are connected in series in the valve closing process flicker indicating circuit; a normally closed contact of a relay with an in-place wind valve and a flashing indicating lamp in the valve opening process are connected in the flashing indicating loop in the valve opening process in series; the fault indicating circuit is connected with a normally open contact of the air valve fault relay and a valve opening fault indicating lamp in series, the indicating circuit B11 comprises a valve closing indicating circuit and a valve opening indicating circuit, the valve closing indicating lamp in the valve closing indicating circuit is connected with the relevant valve relay in parallel, and the valve opening indicating lamp in the valve opening indicating circuit is connected with the valve opening relay in parallel.

Referring to fig. 1-4, the touch screen operating system on the spot 1 includes a normally open contact 8 of a valve-opening relay, the normally open contact 8 of the valve-opening relay is connected to a control loop 13 of the motor protector, a side of the touch screen operating system on the spot 1 is provided with a cable channel for penetrating a secondary cable and a communication cable of an air valve and a fan, a top 15 and a side door 14 of a cabinet body are arranged outside the touch screen operating system on the spot 1, the touch screen operating system on the spot 1 includes the normally open contact 8 of the valve-opening relay, and the normally open contact 8 of the valve-opening relay is connected to the control loop 13 of the motor protector.

The specific use mode and function of the embodiment are as follows:

when the device is used, the ring control cabinet of the embodiment is provided with a special CPU cabinet body, a CPU system 3, a communication interface system A4 and a communication interface system B5 are arranged in the cabinet body, a touch screen local operation system 1 and a photoelectric conversion system 2 are arranged in the cabinet body, a BAS system is connected with a photoelectric switch, a motor protector and a soft starter are connected with the communication interface system A4, a frequency converter and a distributed IO are connected with the communication interface system B5, the distributed IO is used for collecting states of a fan and a wind valve and sending the states to the CPU system 3 and controlling the switch of the fan and the wind valve according to the switch command of the BAS, the interlocking between the wind valve and the fan is realized through a relay circuit, the relay circuit comprises a wind valve control loop (figure 2) and a wind valve control loop (figure 3), and a contactor KM for controlling the start and stop of the fan, a normally open contact of a motor protector MB and a normally open contact of the wind valve are connected in series in the wind valve control loop; the air valve interlocking closing circuit 7 comprises a normally closed contact of a closing in-place intermediate relay KA2 and a normally closed contact of a fan contactor KM, an air valve opening circuit 6 is connected with the normally closed contact of the opening in-place intermediate relay KA1 in series, after an air valve is opened in place, the normally closed contact of the KA1 is opened, the air valve is not electrified, an indicating circuit is further arranged in the cabinet body and comprises a closing valve indicating circuit, an opening valve indicating circuit and an opening/closing/fault indicating circuit, a closing valve indicating lamp in the closing valve indicating circuit is connected with a relevant valve relay in parallel, an opening valve indicating lamp in the opening valve indicating circuit is connected with an opening valve relay in parallel, a normally open contact 8 of the opening valve relay is connected into a control circuit 13 of a motor protector, a special indicating lamp is adopted in the opening/closing/fault indicating circuit, so that the indicating lamp continuously flickers in the opening or closing process of the air valve, and the indicating lamp is turned off when the air valve is opened in place or closed in place; when the air valve has a fault, the indicator lamp is always on, and with the help of three different function indicator lamps, namely an on-position indicator lamp, an off-position indicator lamp and an on/off/fault indicator lamp, an operator can master the running state of the air valve in an all-around manner;

in this embodiment, the top 15 and the side door 14 of the cabinet body are provided with channels for the secondary cables and the communication cables penetrating through the air valve and the fan, so that the interference of the primary loop to the secondary loop cable is effectively prevented, external interference signals are shielded, and the reliability of control and communication is improved;

the air valve control circuit has two control modes: 1. when the knob SA1 is screwed to the 'on site', the valve can be opened and closed on site, the valve opening knob SA2 is screwed to a valve opening position, the air valve is electrified, the valve opening starts to perform valve opening action, after the valve is opened in place, the valve opening indicator lamp HR is on, the coil of the KA1 relay is electrified, the KA1 normally-closed contact connected in series in the valve opening loop is opened, the air valve is electrified, and the air valve is prevented from being in an electrified state for a long time; a normally open contact of a KA1 on-position signal connected in series in an interlocking fan control loop is closed, and the fan can be started at the moment; if the air valve is closed, the fan must be in a stop state, otherwise, KM normally closed in series in a valve closing loop is in an open state, the air valve cannot be closed, the SA2 knob is rotated to the position of the valve closing loop, the air valve closing loop is electrified, the valve closing loop is started, after the valve is closed in place, a valve closing indicator lamp HG is on, a KA2 relay coil is electrified, a KA2 normally closed contact in series in a valve opening loop is opened, the air valve is not electrified, and the air valve is prevented from being in an electrified state for a long time; 2. when the knob is rotated to the remote control position, the distributed IO system can open and close the valve through the dry contact, when the open valve of the distributed IO system K1 is closed, the air valve is started to open, after the valve is opened in place, the open valve indicator light HR is on, the coil of the KA1 relay is electrified, the KA1 normally-closed contact connected in series in the open valve loop is opened, the air valve is not electrified, and the air valve is prevented from being in an electrified state for a long time; when a valve closing point of the distributed IO system K2 is closed, the air valve closing loop is powered on, the closing valve is started, after the valve is closed in place, the valve closing indicator lamp HG is turned on, the coil of the KA2 relay is powered on, the KA2 normally-closed contact connected in series in the valve opening loop is opened, the air valve is powered off, and the air valve is prevented from being in a power-on state for a long time.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a subway is with ring accuse electric cabinet convenient to maintain which characterized in that: the system comprises a touch screen local operation system (1), a photoelectric conversion system (2), a CPU system (3), a communication interface system A (4), a communication interface system B (5), a distributed IO system, a motor protector, a soft starter, a frequency converter and a touch screen; the environment-controlled electric control cabinet is characterized in that a touch screen local operation system (1), a photoelectric conversion system (2), a CPU system (3), a communication interface system A (4), a communication interface system B (5), a distributed IO system, a motor protector, a soft starter, a frequency converter and a touch screen are arranged inside the environment-controlled electric control cabinet, the CPU system (3) is connected with a BAS control system through an Ethernet interface, the top (15) and a side door (14) of a cabinet body are arranged on the outer side of the touch screen local operation system (1), the CPU is equivalent to a distributed center of BAS system control commands, the motor protector and the soft starter are connected with the communication interface system through a PROFIBUS-DP communication bus and used for reading the running state of related equipment and starting and stopping control of the related equipment, and the distributed IO system is used for acquiring the states of a fan and an air valve, sending the states to the BAS system through the CPU system (3) and controlling the opening and closing of the fan and the air valve according to the switching commands of the BAS system.

2. The environmental control electric cabinet convenient to maintain for subway of claim 1, characterized by: the touch screen local operation system (1) comprises an air valve, the interlocking between the air valve and a fan is realized through a relay circuit, the relay circuit comprises an air valve control loop and a fan control loop, and a contactor KM for controlling the start and stop of the fan, a normally open contact of a motor protector MB and a normally open contact of the air valve are connected in series in the fan control loop; the air valve interlocking closing loop (7) comprises a normally closed contact of the in-place closing intermediate relay KA2 and a normally closed contact of the fan contactor KM, the air valve opening loop (6) is connected with the normally closed contact of the in-place opening intermediate relay KA1 in series, and after the air valve is opened in place, the normally closed contact of the KA1 is opened, and the air valve is powered off.

3. The environmental control electric cabinet convenient to maintain for subway of claim 1, characterized by: the touch screen local operating system (1) is also internally provided with an indicating circuit A (9), a blast gate interlocking valve closing signal circuit B (10), an indicating circuit B (11) and an indicating circuit C (12), wherein the indicating circuit A (9) comprises a valve closing process flashing indicating circuit, a valve opening process flashing indicating circuit and a fault indicating circuit, and a blast gate closing-in-place relay normally-closed contact and a valve closing process flashing indicating lamp are connected in the valve closing process flashing indicating circuit in series; a normally closed contact of a wind valve in-place opening relay and a flashing indicating lamp in the valve opening process are connected in series in the flashing indicating loop in the valve opening process; the fault indicating circuit is connected with a normally open contact of the air valve fault relay and a valve opening fault indicating lamp in series, the indicating circuit B (11) comprises a valve closing indicating circuit and a valve opening indicating circuit, the valve closing indicating lamp in the valve closing indicating circuit is connected with the relevant valve relay in parallel, and the valve opening indicating lamp in the valve opening indicating circuit is connected with the valve opening relay in parallel.

4. The environmental control electric cabinet convenient to maintain for subway of claim 1, characterized by: the touch screen local operation system (1) comprises a normally open contact (8) of a valve opening relay, and the normally open contact (8) of the valve opening relay is connected into a control loop (13) of the motor protector.

5. The environmental control electric cabinet convenient to maintain for subway of claim 1, characterized by: and a cable channel for penetrating a secondary cable and a communication cable of the air valve and the fan is arranged on the side surface of the touch screen local operation system (1).