SU1310865A1 - Pneumatic signalling device - Google Patents

Description

eleven

The invention relates to signaling devices that provide a warning signal before an object is started and an object control trigger signal.

The aim of the invention is to reduce hardware costs.

The drawing shows a diagram of the alarm device.

The device contains the first 1, the second 2 and the third 3 four-line distributors, each of which has a spring of the backwater 4, a control chamber 5, the first 6 and the second 7 inputs, the first

8 and the second 9 outputs.

Input channel 10 is connected to the input 6 of the distributor 1, with the first adjustable choke 11 and with the control chamber 5 of the distributor 2.

Input 7 distributor 1 and output

The distributor 3 is connected to the atmosphere, the inlets 6 of the distributors 2 and 3 are connected to the supply channel 12. The outlet 8 of the distributor 2 is connected to the throttle 11 and to the control chamber 5 of the distributor 3.

The output 8 of the distributor 3 is connected to the output 9 of the distributor 2 and through the second adjustable choke 13 to the B51ode 7 of the distributors 2 and 3 and to the control chamber 5 of the distributor 1. The outputs 8 and 9 of the distributor 1 communicate with the first 14 and second 15 output channels, respectively.

The device works as follows.

When the input signal P 1 is fed into channel 10, it passes into output channel 14, while 1. At the same time, the input signal enters control chamber 5 of distributor 2 and the signal from its output 8 passes into control chamber 5 of distributor 3. Distributor 3 switches and the signal from its output 8, it is fed through the choke 13 into the control chamber 5 of the distributor 1. After a period of time specified by the choke 13, the distributor 1 is activated, while Pg, O, PBB, X 1.

The signal Pgj ,, j (is a warning signal, the signal PB, the control signal.

By removing the input signal Pg

the signal Pjt ,, disappears (Pout 2 °, the distributor 2 is switched and through it the signal is fed to the control valve, distributor 1.

108652

After a period of time specified by the throttle 11, the pressure in the control chamber 5 of the distributor 3 drops to a predetermined value, this distributor 5 switches, the signal from the control chamber 5 of the distributor 1 is reset, and it switches to the initial state.

If the object is turned on again, since the signal

 THEIR

channel 10 occurs before the distributor 3 is turned off, the signal Pg passes immediately to channel 9, i.e. when you turn on again in the time interval specified by the throttle object. Included without pre-warning Pgj, y. Formula of the invention

0 Pneumatic alarm device containing the first, second and third logic elements, the input channel connected to the first adjustable choke, the second adjustable

5 choke, first and second output channels and a power supply channel, characterized in that, in order to reduce hardware costs, logic elements are made in the form of four or four distributors, each of which has a backpressure spring, a control chamber, the first and second inputs, the first and the second outputs, and the input channel is connected to the first input

5 of the first four-line distributor and with the control chamber of the second four-line distributor, the first inputs of the second and third four-way distributors are connected to

0 by the supply channel, the second input of the first four-way distributor and the second output of the third four-way distributor are connected to the atmosphere, the first output of the second four-way linear distributor is connected to the control camera of the third four-way distributor, and the second output of the second four-way distributor

The Q distributor is connected to the first output of the third four-line distributor and through the second adjustable choke to the second inputs of the second and third four-line distributors and to the control chamber of the first four-way distributor, the first and second outputs of which are connected to the first and second output channels.

Claims (1)

A pneumatic alarm device containing the first, second and third logic elements, an input channel connected to the first adjustable choke, a second adjustable choke, the first and second output channels and a power channel, characterized in that, in order to reduce hardware costs, the logic elements are made in the form of four-linear valves, each of which has a backup spring, a control chamber, first and second inputs, first and second outputs, the input channel being connected to the first input of the first four-way the distributor and the control chamber of the second four-way distributor, the first inputs of the second and third four-way distributors are connected to the power channel, the second input of the first four-way distributor and the second output of the third four-way distributor are connected to the atmosphere, the first output of the second four-line distributor is connected to the control camera of the third four-way distributor and through the first choke with the input channel, the second output of the second four-line distributor nen to the first output of the third four-way distributor and through a second adjustable throttle - to the second inputs of the second and third four-way valves and with the first four-way control chamber of the distributor, the first and second outputs are connected to first and second output channels.