SU529370A1 - Pneumatic multiscale indicator - Google Patents

Description

(54) PN1 VMLTICH SKY LSHS 1: CALNY

CICATOR

one

The invention relates to the field of instrumentation, and HNfeHHO to pneumatic indicating devices of centralized control systems, intended. TS.TN operational control of technological variables in absolute scales.

An electrical indicating multiscale instrument with an automatic measuring scale is known, containing a switchboard of co-mains signals, a measuring device, a carrier of absolute scales, its drive and a pointer to the values of measured values ij,

The disadvantage of it is the low accuracy of setting the scale due to the use of an astatic-type drive, as well as the impossibility of its use in the automation of fire- or explosive atmospheres.

Also known is a pneumatic p-yugoshkal indicator, containing a code converter, a measuring device, an absolute scale carrier, a pneumatic carrier drive and a pointer to measured values 2,

However, in this indicator there is no feedback on the position of the media ab2

Solutukh scales, after, tsiatel11. - their accuracy is low yCTaHOBKir.

Nakbsleg blokshhg to the invention is the following: yavl, attributes aYI x-scoop indicator, contents; saii from; a test node, connected to the input channel of the core-open-open valve block, the inputs of which are connected to the indicator input channels, and The control inputs - to the addressing outputs, step-by-step drive of the scales carrier; on the i-iOTOporo axis, the hard disk is connected to the i-iOTOporo axis; PGN; -m channelohgg, in other words; drive which performed the brave. a power path or a pulse generator, the input of which is connected to the lection of colemutation, which is connected via a choke to the power source, and the output to the GF:; Eooom of the carrier of the scales 13,

Odka1.: O such ikitsikatsr obla, dubt complex KOHCTpvKTine.

Claims (3)

To simplify the indicator, the fixed disk openings in it are made along a concentric aalg circumference and connected to the corresponding addressing elements. and the receiving channels of the movable disk are connected via a gaogovodovy element OR to the switching input of the pulse generator. The drawing shows a schematic diagram of the proposed indicator. The indicator contains a power source 1, choke 2, switching element 3, inlet 4 of the pulse generator 5, stepping drive 6 of the scale carrier 7, addressing elements 8, block 9 of normally open valves, a distributor including fixed disks 10 with holes 11, made according to concentric surroundings, and receiving channels 12 of the movable disk (not shown), a multi-input element OR 13, disconnecting the input 14 of the pulse generator 5, the front panel 15 with a window 16 and the measuring node 17. The power source 1 is connected via wire 2 to the element to 3 and with the input 4 of the pulse generator 5s connected with the stepper drive 6 of the carrier of the scales 7, the addressing elements S are connected to the control Ivffli Bxo.aavm of the block 9 of normally open valves and the openings 11 of the fixed distributor disk 10, the movable disk with npeMHbnvfH channels 12 is connected via the multi-input element OR 13 to the disconnecting input 14 of the impulse generator 5, the front panel 15 with the window 16 and from the measuring unit 17 is connected to the output channel of the flea 9 normal-open valves. The indicator works as follows. For Byzorl, any measured variable switching element 3 is inserted into the corresponding slot of addressing element 8. At the same time, the air flow through element 3 is stopped and pressure 2 equal to the supply pressure is established behind the throttle 2. This leads to the inclusion of the pulse generator 5, which controls the operation of the shaggy drive 6, rotates the carrier 7 and the movable disk with the receiving channel 12. The rotation of the carrier 7 is continued until one of the moving disk channels 12 coincides with the fixed disk 11 10 of the distributor corresponding to the called variable, and the call signal is received through the multi-input element OR 13 by disconnecting input 14 of the pulse generator 5. As a result, the required click is set in the window 16 of the front panel 15 but. At the same time, the call signal goes to the corresponding normally open valve of block 9, which switches the signal characterizing the measured variable to the measuring node 17. The proposed indicator reduces the number of K-OR-S elements in centralized control systems by 90 shchuk. Pneumatic multi-scale indicator containing a measuring unit connected to the output channel of a normal-open valve unit, whose inputs are connected to the indicator input channels, and the control inputs to the outputs of addressing elements, a stepping drive carrier, on the axis of which a fixed distributor disk with rigid receiving channel, in a fixed disk of which holes are made, a multi-input element OR and a pulse generator, whose input is connected to a switching element, connected through the choke with the power source, and the output with the carrier of the scales, which means, in order to simplify the indicator, in it the holes of the fixed disk are made in concentric circles and connected to the corresponding addressing elements , and the receiving channels of the movable disk are connected through the multi-input element ILR1 to the disconnecting input of the pulse generator. Sources of information taken into account in the examination: 1. Shenbroth I. M. Machines of centralized control. M., Energie, 1966, p. 112 2. Avt.Sv. USSR № 325494, M.Kl. SO5 B 19/44, 1972. 3. Technical description and operating instructions 4Zh2.390.01 9TO, UKZP, 1973 (prototype).