RU28220U1 - DEVICE FOR PROTECTING PREMISES FROM HEATING - Google Patents

Description

2OO212013O

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DEVICE FOR PROTECTING PREMISES FROM HEATING

The utility model relates to controls for pipe fittings and piping systems inside buildings,

There is no information in the literature on means intended to prevent flooding of the premises through which pipelines with household and process fluids pass, from flooding in the event of pipeline breaks and due to faulty demountable fittings. The exception is the safety instructions for specific production rooms, which require duty personnel to close valves and / or valves at the pipe inlets to work rooms after work is completed. However, a rupture of the pipeline or a malfunction of the collapsible crane can occur at any time, as a result of which the room can be flooded with household or process liquid.

A device is proposed for protecting rooms in which pipelines with process or household liquids are located from flooding in the event of an emergency liquid supply when a pipeline ruptures through the room and / or a breakdown of collapsible fittings that are not connected to these pipelines.

The device consists of taps, valves and / or gate valves equipped with known electric or other type of actuators, and these taps, valves or gate valves are installed in the pipeline passing through the protected room, at the pipe inlet to the room and at the pipe outlet from the protected room. The actuators of these taps, valves and gate valves are connected to the control outputs of one or more control units, to which one or more liquid level sensors of a float or any other known type are connected. Each of the control units contains an ODiN or several electronic or other known type of nodes for converting the signals of the liquid level sensors into the control signals of the valves, valves and / or gate valves; The compliance of the device with the novelty criterion is that these liquid level sensors are fixed in leaky housings installed in close proximity to the protection floor F 16 K 31/00 (E 03 C 1/00)

of the room in such a way that the sensitive element of the sensor (float or other type) is located on the floor surface or at a small distance from it.

The drawing of figure 1 shows a block diagram of the proposed device. In the diagram, the sources and power lines of the drives are conventionally not shown.

There are two pipelines in the protected room: pipeline 1 ends in a group of collapsible taps 4, 5 and 6 in the protected room, a crane 2 with a drive 3 is installed at the entrance of the pipe 1 to the protected room, and the drive 3 is connected to one of the control outputs of the control unit 18. Pipeline 7 passes through the protected room, at the entrance of the pipeline 7 to the room there is a valve 8 with an actuator 9, which is connected to another control output of the control unit 18. At the exit of the pipeline 7 from the protected room, a valve 10 is installed with a drive ohm 11, which is also connected to the third control output of the control unit 18. Collapsible valves 12 and 13 are connected to the pipeline 7 inside the protected room, and, in front of the collapsible crane 13, a crane 14 with a drive 15 is installed, which is also connected to the control output of the control unit 18. To the inputs of the control unit are connected liquid level sensors 16 and 17, whose housings are located on the floor of the protected room. To ensure safety and reliability of operation, for example, the operating voltage Upa6 is supplied from the mains power supply 19, to which the autonomous power supply 20 is connected with the possibility of supplying the operating voltage to the control unit from the autonomous unit when the mains voltage is disconnected from the mains power supply.

The device operates as follows.

A liquid level sensor (or sensors) is installed either at the lowest point of the floor of the room to be protected or in the immediate vicinity of the most probable place of emergency liquid spill. In the event of a pipeline rupture or an accident of collapsible fittings, a certain layer of liquid will appear on the floor of the room and, for example, will cause the float of the liquid level sensor to rise. The signal from the sensor will go to the control unit, where it will be converted into control signals by appropriate known methods and circuits. These signals from the control outputs will go to the actuators of the cranes, valves and / or valves and valves, the valves and / or valves will be transferred by the actuators from open to closed, and the flow of liquid into the room will stop. In the case of, for example, a rupture of the pipeline 7, the shutoff of the valve 10 simultaneously with the valve 8 will prevent flooding of the protected area with the liquid remaining in that part of the pipeline that is outside the protected area. After eliminating the accident, closed taps, valves and / or gate valves are opened either manually or by commands issued from the control unit in manual mode.

The technical result achieved by the application of the utility model is that in the event of an accident - leakage from a pipeline located in the room or in the event of failure of the pipe fittings installed in the protected room - a small amount of liquid enters the room, which cannot cause serious consequences such as the need for major repairs of flooded rooms, irreparable damage to equipment and furniture, etc., and the loss of large quantities of liquid from pipelines is prevented Dov.

The drawing of figure 2 shows the installation, for example, of a float-operated liquid level sensor in a housing located on the floor of the protected room.

As an example of a sensor, a VAZ-21213 car fuel level sensor was used. Part 21213-3827010 from the VAZ-21213 spare parts catalog.

A sensor base 22 is fixed on the housing 21, terminals 23 are installed on the base 22, from which the busbars 24 enter the housing of the variable resistor 25. A lever 26 is connected to the movable contact of the variable resistor 25, on which the label 27 is fixed. The housing 21 has a bottom 28, in which a window 29 is cut under the float 27, exceeding the dimensions of the float 27 in size. Other windows (30) can be made in the bottom. Lower edge housing

has protrusions 31. The side walls of the housing may have perforation (not shown conditionally in the drawing of FIG. 2).

Window 29 allows the float 27 to drop to touch the surface of the floor, which increases the sensitivity of the sensor. Additional windows in the bottom of the housing and the protrusions 31, creating a gap between the floor surface and the bottom and perforation of the side walls of the housing serve to facilitate access of fluid to the internal cavity of the housing.

In this design, the liquid level sensor when changing the position of the float 27 changes the value of the variable resistor. This change can be converted to a drive control signal by known methods. For example, by including a variable resistor in one of the arms of a balanced bridge, one of the diagonals of which is supplied with a voltage, and on the other a signal is taken that is zero when the bridge is balanced, and different from zero when the value of the variable resistor of the liquid level sensor changes. The imbalance signal can be converted into a control signal using known amplification circuits, which are produced in series.

In the event that a float or other sensitive element of the liquid level sensor controls a group of contacts, it is possible to use electromagnetic relays to generate a drive control signal.

As drives, any known drives of cranes, valves and / or plugs can be used, for example, according to USSR copyright certificates No. 362170, No. 1583693 or according to the utility model certificate of the Russian Federation No. 19114.

The possibility of using the claimed utility model to protect rooms from flooding with liquid from pipelines and collapsible fittings installed in the room, as well as the possibility of using known and visible units and parts for assembling the device according to the claimed utility model, indicate that the claimed utility model meets the industrial applicability criterion.

Authors U: A.V. Litovchenko

lLf. P.F. Lukyanov

Claims (10)

1. A device for protecting premises from flooding by liquid from pipelines and / or collapsible pipeline fittings passing through it, including one or more taps, valves and / or gate valves equipped with an electric or other type of actuator, one or more valve actuator control units and / or gate valves, sources and power lines of actuators and one or more liquid level sensors of a float or other type, characterized in that each of the liquid level sensors is installed in an unpressurized housing located directly in oh proximity to the floor or on the floor of the protected premises.  2. The device according to claim 1, characterized in that the sensors are connected by mechanical and / or electric communication lines with the inputs of one or more control units.  3. The device according to claim 1, characterized in that each control unit contains one or more electronic or other types of nodes for converting sensor signals into control signals for actuators of valves and / or valves.  4. The device according to claim 1, characterized in that each control unit comprises a unit for converting the network voltage into operating voltages of the sensor signal conversion units and a unit of autonomous sources of operating voltages with the ability to automatically turn on the unit of autonomous sources when the network voltage is turned off.  5. The device according to claim 1, characterized in that the controlled taps and / or valves are installed at the entrance of each pipeline to the room and at the exit of each pipeline from the room.  6. The device according to claim 1, characterized in that the controlled valves and / or gate valves are installed on collapsible pipelines in front of each instance or a group of instances of collapsible fittings located in the protected room.  7. The device according to claim 1, characterized in that the housing in which the liquid level sensor is installed is installed on the floor of the room, and the lower point of the float or other sensitive element of the liquid level sensor is located at a distance of not more than 50 mm from the floor surface of the room.  8. The device according to claim 7, characterized in that the lower edge of the housing in which the liquid level sensor is installed is provided with one or more protrusions forming a gap between the lower edge of the housing and the floor surface of the room.  9. The device according to claim 7, characterized in that in the bottom of the housing one or more holes are made, the total area of which exceeds 10% of the area of the bottom of the housing. 10. The device according to claim 9, characterized in that one of the holes in the bottom of the housing is made under the float or other sensitive element of the liquid level sensor and has dimensions exceeding the overall dimensions of this sensitive element.