CN107120044A - A kind of underground power cable passage Fire-proof door device - Google Patents

Abstract

The invention relates to a fire door device for underground power cable channels, including a firewall, a sensor system, a robot fire door, a hinge, an automatic door closer, a cable rack, a pedestrian fire door, a thermal insulation expansion agent, and a normally closed door closer. The robot fire doors and pedestrian fire doors are respectively connected to the firewall through hinges, and the opening and closing are controlled by automatic door closers and normally closed door closers. The thermal insulation expansion agent is set around the door frames of the robot fire doors and pedestrian fire doors, and It is tightly adhered to the edges around the door frame. When the temperature rises in case of fire, the thermal insulation expansion agent will automatically expand rapidly and fill the gaps around the door frame, isolating the heat source on one side. Through the realization of the above technical solution, the device provided by the present invention can open and close the fire door according to the real-time situation in the power cable channel, and use the expansion agent to isolate the fire source when necessary, effectively protecting the power cable channel. Cables and related equipment have high use value.

Description

An underground power cable channel fire door device

technical field

The invention belongs to the technical field of fire protection for electric cable passages, and relates to a fire prevention device for cable passages, in particular to a fireproof door device for underground electric cable passages.

Background technique

For underground power cable transmission systems, the power cables and related inspection equipment are expensive, and the power cable channels are usually laid underground in cities, criss-crossing, and the environment is extremely complex. Therefore, the daily inspection and accident prevention of underground power cable channels are the top priority of the work. The existing underground power cable channel adopts a through-type layout. Once a fire accident is caused by external force damage or abnormal current, it is easy to cause large-scale power outages and equipment damage due to untimely prevention and treatment. Therefore, it is necessary to fire the underground power cable channel. Infection prevention and isolation treatment.

Taking advantage of the advantages of small size and convenient walking of the rail-mounted robot, a set of inspection and fire-fighting robot system suitable for underground power cable tunnels is developed. The metal track erected on the top of the narrow cable channel can be loaded with cable channel inspection and fire-fighting robots to conduct multiple monitoring of the complex underground cable channel environment, such as visible light and infrared, and monitor the toxic gas concentration and environment in the channel through various sensors carried by itself. Real-time investigation of temperature and humidity, external force damage, cable temperature, etc., and timely treatment and pretreatment of open flames and fire hazards.

In view of this, it is necessary to provide a fire door device for underground power cable channels to meet the needs of practical applications.

Contents of the invention

Aiming at the deficiencies in the prior art, the object of the present invention is to provide a fire door device for underground power cable channels, which has the functions of ventilation control, heat insulation and fire prevention, and can effectively protect the underground power cable channels from fire prevention and insulation. Thermal action to ensure the safe operation of power cables and related testing equipment.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a fire door device for underground power cable channels, including: a firewall, a sensor system, a robot fire door, a hinge, an automatic door closer, a cable rack, and a pedestrian fire door , thermal insulation expansion agent, normally closed door closer, characterized in that the sensing system is installed on the firewall; the robot fire door and the pedestrian fire door are installed on the firewall by hinges, and the robot fire door is connected to the fire door through the automatic door closer. connection; the pedestrian fire door is connected to the firewall through a normally closed door closer; the cable racks are located on both sides of the firewall for receiving cables and making them pass through the firewall; the thermal insulation expansion agent is arranged around the frame of the robot fire door and the pedestrian fire door , and closely adheres to the edges around the door frame, and does not expand under normal conditions. When the temperature rises in case of fire, the thermal insulation expansion agent automatically expands rapidly and fills the gaps around the door frame, isolating the heat source on one side.

Preferably, the sensing system includes a distance sensor and a temperature sensor.

Preferably, the automatic door closer includes a door closer connecting rod seat, a first door closer push rod, a second door closer push rod, and a door closer motor box. When the robot needs to pass through the robot fire door, the sensing system passes through The distance sensor measures the proximity of the robot and transmits the signal to the automatic door closer. The motor in the door closer motor box drives the second door closer push rod, which in turn drives the first door closer push rod to rotate, thereby making the door closer The device connecting seat drives the robot fire door to open.

Preferably, the sensing system uses a temperature sensor to detect the environment in the channel, and automatically alarms when the monitored temperature parameter exceeds a threshold.

Beneficial effects of the present invention: the present invention has the following advantages and positive effects:

(1) The fire door device of the underground cable channel adopts an interval layout, that is, it is arranged at intervals (generally about 100 meters apart). The loss caused by the disaster is minimized, and the fire source and heat source are cut off step by step, which also increases the fire protection reliability geometrically, which is more conducive to ensuring the safe operation and maintenance of the cable corridor;

(2) For the fire door device of the underground power cable channel, a special heat-insulating expansion agent is attached to the structural gap, which automatically expands rapidly when encountering abnormal high temperature, and strengthens the heat insulation and fireproof performance of the fire door. This method fully ensures long-term reliable heat insulation sex;

(3) The fire door layout sensing system includes distance sensing and temperature sensing, which can independently identify the distance between the robot and the fire door and automatically open and close the fire door, and intelligently control the detection process; the temperature sensing device can monitor the ambient temperature in real time. After the monitoring parameters exceed the threshold, it will automatically alarm and deal with it accordingly. Compared with the layout of the traditional corridor sensing system, this method has higher integration, enhanced reliability, and improved real-time performance.

Description of drawings

Fig. 1 is a structural diagram of an embodiment of the present invention;

Fig. 2 is the three-dimensional structural diagram of the embodiment of the present invention;

Fig. 3 is a structural diagram of an expansion agent according to an embodiment of the present invention;

Fig. 4 is a structural diagram of a door closer according to an embodiment of the present invention.

Among them, 1—firewall, 2—sensing system, 3—robot fire door, 4—hinge, 5—automatic door closer, 6—cable rack, 7—pedestrian fire door, 8—heat insulation expansion agent, 9— Normally closed door closer, 51—door closer connecting rod seat, 52—first door closer push rod, 53—second door closer push rod, 54—door closer motor box.

detailed description

In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope of the claims listed in the present application.

As shown in Figures 1 to 2, a fire door device for underground power cable channels includes a firewall 1, a sensor system 2, a robot fire door 3, a hinge 4, an automatic door closer 5, a cable rack 6, and a pedestrian fire door 7. Thermal insulation expansion agent 8, normally closed door closer 9, automatic door closer 5 includes door closer connecting rod seat 51, first door closer push rod 52, second door closer push rod 53, door closer Motor box 54. The robot fire door 3 and the pedestrian fire door 7 are connected to the firewall 1 through the hinge 4; the robot fire door 3 is connected to the fire door 1 through the automatic door closer 5 at the same time; the sensor system 2 is installed on the firewall 1; the cable rack 6 is located on the firewall 1, both sides are used to accept cables so as to pass through the firewall 1; the pedestrian fire door 7 is connected to the firewall 1 through the normally closed door closer 9; Adhesion, and not dilated under normal conditions, there is a gap when the two doors are closed. When the inspection personnel need to pass through the firewall 1, they can push the pedestrian fire door 7 to pass through, and then under the action of the normally closed door closer 9, the pedestrian fire door 7 is automatically closed to the initial state; when the inspection robot and the fire robot need to pass When the firewall is at 1, the sensing system 2 can measure the proximity of the robot and transmit the signal to the automatic door closer 5, and the motor in the door closer motor box 54 drives the second door closer push rod 53, and then drives the first door closer. The door push rod 52 rotates, so that the door closer connection seat 51 drives the robot fire door 3 to open, and the robot passes through, and the door is reclosed in the above-mentioned manner after passing through. When a fire occurs in the cable channel, the sensing system 2 can sense the change of the ambient temperature, make the automatic door closer 5 and the normally closed door closer 9 in a closed state, and send an alarm to the inspection personnel. At the same time, the thermal insulation expansion agent 8 expands rapidly, fills the gap between the two doors, and plays the role of isolating the fire source.

The present invention provides a fireproof door device for underground power cable channels. The device is equipped with a distance sensor and a temperature sensor. The opening and closing state can be judged by the sensor state, and the opening and closing control is carried out through the door closer, which is beneficial to cable inspections, fire fighting robots and For the normal passage of inspection personnel, the temperature sensor is used to detect the environment in the passage. When abnormal temperature rise and fire hazards are found, the fire door is closed in time and the heat insulation of the fire door is strengthened with a heat-insulating expansion agent to play a role The role of fire insulation.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (4)

1. a kind of underground power cable passage Fire-proof door device, including：Fire wall, sensor-based system, robot fire resistant doorsets, hinge, Automatic door closer, cable trough, people's row fire resistant doorsets, heat-insulated swelling agent, normally closed door closer, it is characterised in that sensor-based system is arranged on On fire wall；Robot fire resistant doorsets and people's row fire resistant doorsets are arranged on fire wall using hinge, and robot fire resistant doorsets pass through automatic Door closer is connected with fire resistant doorsets；People's row fire resistant doorsets are connected by normally closed door closer with fire wall；Cable trough is located at fire wall both sides, For accepting cable, it is allowed to run through fire wall；The heat-insulated swelling agent is arranged at the door of robot fire resistant doorsets and people's row fire resistant doorsets Frame surrounding, and with doorframe edge close adhesion, it is unexpanded under normal circumstances, when meet with fire suffer from temperature rise after thermal expansion Agent is expanded rapidly and fills up the gap of doorframe surrounding automatically, and thermal source is isolated in into side.

2. underground power cable passage Fire-proof door device according to claim 1, it is characterised in that the sensor-based system bag Include range sensor and temperature sensor.

3. underground power cable passage Fire-proof door device according to claim 2, it is characterised in that automatic door closer includes Door closer connecting rod base, the first door closer push rod, the second door closer push rod, door closer motor box, when robot is needed by machine During people's fire resistant doorsets, sensor-based system measures the close of robot by range sensor, and transmits signals to automatic door closer, Motor in door closer motor box drives the second door closer push rod, and then drives the first door closer push rod to rotate, so that closing door Device connecting seat band mobile robot fire resistant doorsets are opened.

4. modularization intelligent mobile substation according to claim 2 system, it is characterised in that sensor-based system utilizes temperature Sensor detects to environment in passage, automatic alarm after monitoring temperature parameter exceedes threshold value.