SU1246898A3 - Control valves - Google Patents

Description

2. The reinforcement according to claim 1, characterized in that the total axis of the shaft is provided with a lever with a counter-weight mounted to move along the lever.

The invention relates to regulating valves and can be used in a two-line water supply system with central power supply, moreover, several consumers are provided with water, for example hot, with a single line, and the second line works either as recycle or as supply.

The purpose of the invention is to increase reliability while simplifying the structure of the water supply system.

Fig. 1 is a block diagram of the use of control valves; 2 shows control valves, a general view.

The water supply system contains two lines 1 and 2, connected to the central supply line 3, connected to the latter via a reverse valve 4 and a choke 5, line 6, which includes a heat exchanger 7 and a tank 8 for hot water. Parallel to trunk 6, there is a circulation pipe 9 in which there is a check valve 10 and a circulation pump 11. A main line 1 is connected to the output side of the hot water tank, and the rotor continues further as the first upstream branch 12. Highway 2 is connected to Circulation line 9, which is further the second upstream branch 13. The ends of the branches 12 and 13 are connected by a segment of the line 14 to each other and connected to the users 15. The lines 1 and 2 are interconnected via a pipe 16 to the canal. om 17 and control valves 18 and conduit 19, there are other connection between the main line 1 and E 2, namely through line 20 with a throttle 21. The first channel 22 regulating Armat Plays 18 is connected to manifold 3 tsentralnog

3. The reinforcement according to claim 1, characterized in that the flaps are installed with the ability to regulate their angular position relative to each other.

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power through line 23, bypass choke 5, and return line 24, which includes choke 25.

The control valve (figure 2) comprises a housing 26 ,. in which two channels 17 and 22 running in parallel to one another, having at least a partially circular cross section, are made, and pipelines are connected to both ends. Channel 22 has a larger cross section than channel 17, and its central line is higher than the central line of channel 17.

The distance between the two central HbiNtti lines is equal to 3/4 of the cross-section of channel 22. In channels 17 and 22, sensing and throttling elements are arranged in a common housing, made in the form of two flaps 28 and 29 that can be rotated on a common axis 27. 28 mounted eccentrically on the axis. At the end of the axis 27, the lever 30 with the counterweight 31 is mounted, mounted to move along the lever and fixed by means of the locking bolt 32. By moving the counterweight 31 along the lever 30, any opposing moment can be set.

Water supply system works

in the following way. I

Water coming from line 3

The central supply is heated in the heat exchanger 7, is collected in the tank 8 for hot water, from where through the main line 1 and the ascending branch 12, the section of the line 14 and the second ascending branch 13 goes to the consumers 15. With a small demand for hot water i.e. at

pauses in the flow, hot water to retain heat through the circulation pump 11 circulates through

line 1, 12, 14, 13, 2, 9 and 6 In this mode of operation, in the first main line 2 and in the ascending branch 13, the water has the direction of flow along the dotted arrow A.

In this mode, the flow in the central supply line 3 is relatively small, the partial flow to the highways 23 and 24, installed with the help of throttles 25 and 5, is also small, so that the shutter 28 in the regulating valve 18 practically does not turn, and the shutter 29 in the control channel 17 the armature 18 remains in the closed position; there is no flow from the line 1 to the line 2.

With more demand for hot water, the amount of water passing through the channel 22 of the control valve 18 increases and the valve 28 is turned in proportion to the flow (sensing element). In this way, the second valve 29 (throttling element) is opened and hot water is supplied from line 6 through line 16, channel 17 of control valve 18, main line 2 and ascending branch 13 to consumers 15. In this operating mode the direction of flow in line 2 is shown by a solid arrow B. If between the water flow at

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Consumers 15 connected in the ascending branch 12 and to branch 13 there is a significant difference, then they are aligned through the master section 14. The amount of water between highways 1 and 2 is automatically adjusted.

The control valve works in the following way.

JO The force impact that

renders the fluid moving in the channel 22 to the valve 28, the torque on the axis 27, which turns it against the moment created by the (weight 5, until the alignment of the moments occurs. At the same time, due to the common axis, the valve 29 turns equilibrium. If the average

2Q, the flow in channel 22 is small, the torque acting on axis 27 is small, and the damper is in the closed position. If the flow in channel 22 is large, then through valve 29, axis 27 acts

5 a larger moment and the flap 29 opens.

Due to the proposed adjustment of control valves, the temporary support of the flows is carried out automatically with the required characteristics and quantity.

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Editor A. Kozoriz

Compiled by E. Yashkova Tehred G. Gerber

Order 4031/60 Circulation 688 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader L. Pilipenko

Claims (3)

1. REGULATING FITTINGS mainly in water supply systems with two highways and central power supply, containing a sensitive element in one highway and a throttling element in another, controlled by a sensitive element, characterized in that, in order to increase reliability while simplifying the structure of the water supply system, sensitive and throttling the element is located in a common housing and is made in the form of two shutters installed with the possibility of rotation on the common axis, while one of the shutters is mounted on the axis ecentric. Che * s with I I I ¹ 'A I U Figure 1 Oh oo> sn 2. The fittings according to claim 1, characterized in that the common axis of the dampers is equipped with a lever with a counterweight mounted to move along the lever. 3. The fittings according to claim 1, characterized in that the shutters are installed with the possibility of adjustable angular position of them one relative to the other.