Flow control valve

FIELD: machine building.

SUBSTANCE: valve comprises case having through channel and tap arranged at the angle to through channel. In through channel there is a throttle device, having throttle element actuated via tap, and two points of measurement to measure pressure in through channel along both sides of throttle device. Each point via channel of pressure measurement is connected to hole for measurement of pressure at least one pressure measurement channel passes through bend.

EFFECT: possibility to expand capabilities in part of flow control valve layout.

12 cl, 3 dwg

 

This invention relates to a valve for flow adjustment, the housing of which has a flow channel and an outlet located at an angle to the flow channel and the flow channel installed a throttle device with a throttling element which is driven through the outlet, and two measuring points for measuring the pressure in the flow channel on both sides of the throttle device, each of which is through the measuring channel is connected with a pipe for measuring pressure.

Such a valve is known, for example, from No. DE 19619125 C2. In this throttle valve is formed by a measuring sleeve which is installed before the actual throttle equipment. Channels for measuring pressure allotted on both sides of the sleeve to the side so that the holes for pressure measurement are located at the lateral surfaces of the valve body and located at an angle of about 45° to the bend and 90° to each other.

This valve is designed for hydraulic balancing of the hydraulic system, for example, water heating pump. This balancing can lead to the consumption of different parts of the fluid-filled system in accordance with certain specified values.

To do this, measure the pressure on both sides of the throttle. If the dimensions of the reactor is known, the pressure can be calculated consumption. Rashomon be changed by means of the throttle device.

We also know how the throttle device can be used as a controller. In this case also required a dial or other indicator that indicates the current value of the throttle device.

Regardless of this, you want to be able to measure the pressure on both sides of the throttle, however, and the pressure drop across the choke.

Valve to adjust the flow manipulating relatively rare, usually during the initial commissioning of the hydraulic system such or after rework of the hydraulic system. So at another time the valve is not disturbed, it is often installed in inaccessible places, such as under the floors or in the mines. However, because access to the valve is possible only with difficulty, adjustment of the flow Adjuster is difficult. Very often the problem is the installation of the sensors into the holes. In some cases, this requires significant work skill.

The present invention is to expand opportunities in the layout of the valve to adjust the flow.

With respect to the valve type named this problem is solved by removing at least one measurement channel through the outlet.

This gives more flexibility in the placement of holes for pressure measurement. Now no longer the South to place the measuring hole right near places where the measuring channel is connected with the flow channel. Moreover, the hole for the pressure measurement can also be placed in the area of the outlet, where it is more accessible to the technician. While the word "challenge" is something that departs from the valve body under the said angle to the flow channel. Allotment in whole or in part, you can perform the piece with the housing. As a diversion, you can use a separate part connected to the valve housing. Removal can also be performed from several parts, and the parts can be collected in a longitudinal and/or radial direction (relative to the exhaust), or also on the perimeter.

Preferably the outlet is placed the sleeve and the channel pressure is formed between the sleeve and the wall of the outlet, at least part of its length. Additional treatment of the exhaust, usually not needed, but a certain layout may require holes in the wall-of-way for transmission of pressure to the outside.

While it is preferable that a throttling element was attached to the sleeve. Thus, the sleeve serves two purposes, namely, first, it forms a channel pressure measurement, and secondly, is throttling element.

Preferably, the two holes for the pressure measurement is made in two parallel measuring pipes. This simplifies the the stop or the input pressure sensors, as to insert the sensors in the pipes, both sensors can be moved together. Therefore, the pressure sensors can be connected to each other mechanically, for example, to install them on a common holder, and thus the time required to install sensors, almost cut in half.

The angle between the measuring pipe and the casing is preferably from 20 to 70°. Due to this, the measuring tubes can be placed between the outlet and the housing, which in this district covers the flow channel. As the Adjuster in any case requires access to the allotment to trigger throttling element, we can assume that in this place is also available openings for measuring pressure, so that they could enter the measuring sensors.

Preferably, the measuring nozzles directed in the sinus between the bend and the longitudinal section of the valve body, covering the flow channel. Thus, the latch retains extremely compact external dimensions. All elements protruding from the valve body, are, so to speak, from one point. Due to this, also a slight risk that the measuring pipe can hold.

Preferably the outlet is between the two channels measuring pressure, at least part of their length. Thus, the challenge is also ináorder to separate two channel pressure measurement. Additional structural elements for this are not needed. This simplifies the design of the valve body.

Preferably, at least one hole for measuring the pressure placed into the mounting element, which is attached to the outlet with the possibility of rotation. Through this hole you can deploy concerning allocation and to bring it into position for easy positioning of the pressure sensor. This makes the work even more.

Mainly connecting element made in the form of covering the outlet nozzle. Thus, this nozzle forms a sort of cuff covering the drain in the form of a ring. The challenge, in turn, provides for the nozzle support with a possibility of rotation, so it's mechanically relatively sturdy construction.

Preferably between the nozzle and the casing is formed an annular channel. The annular channel is part of the channel pressure measurement. Annular channel bypasses fluid under pressure to the hole for measuring pressure, regardless of the angular position of the nozzle relative to the row.

Preferably between the nozzle and the valve housing in the region of the end face of the nozzle formed by the annular channel. In this case, the channel, i.e. the second annular channel, is part of the channel the pressure measurement to another hole. Then both channels can clearly be separated from each other, namely one channel to put on the end of the nozzle, and the second is in the area of its lateral wall. This simplifies the design.

Preferably the annular channel is limited to the outer wall of the exhaust. Thus, the second annular channel is in the sinus between the allotment and the rest of the valve body, so that these two elements form two walls of the annular channel. In this case, with the other sides of the annular channel protects itself nozzle.

Hereinafter the invention is described based on the preferred example of implementation, the description is accompanied by drawings. In the drawings shows the following:

figure 1 is a top view of the valve to adjust the flow;

figure 2 is a section along the line I-I in partial section along the line II-II of figure 1;

figure 3 is a section along the line I-I in partial section along the line III-III of figure 1.

The valve 1 to adjust the flow has a housing 2, through which passes a flow channel 3 with the inlet 4 and outlet 5. The flow direction can be reversed. Between the inlet 4 and outlet 5 set the throttle device 6 with a throttling element 8, which is mounted for movement along the axis 7. A throttling element 8 can be moved by means of the adjusting spindle 9, which for this purpose can ramati in detail not shown screw thread.

The housing 1 has an outlet 10, mounted approximately at right angles to the longitudinal section 11, and the longitudinal portion 11 is parallel to the flow channel 3. First, the outlet 10 is designed to serve as a support for throttling element 8. For this throttling element 8 is placed in the sleeve 12, is inserted into the outlet 10. The sleeve 12 is sealed relative to the outlet 10 so that the channel 3 to the outside cannot penetrate no liquid.

The throttle device 6 via a throttling element 8 forms section 13 of the thread, which you can modify to set the flow rate through the valve 1. To this flow rate could be controlled on both sides of the throttle device 6 is provided on one point 14, 15 of the measurement. In both points 14, 15 can measure the pressure that is present in this place of the flow channel 3. The measured pressure drop and the information about the size of the section 13 of the flow can be calculated consumption.

To pass out to measure the pressure from both points 14, 15, there are two holes 16, 17, each of which is arranged in the measuring pipe 18, 19. Both the measuring tube 18, 19 are an integral part of the coupling element, which is made in the form of the nozzle 20 and is mounted for rotation on the outlet 10. Between the nozzle 20 and the casing 10, there are two seals 21, 22. Another is Platania is located between the nozzle 20 and the longitudinal portion 11 of the housing 2.

The measuring point 14 through the opening 24 in the housing 2 is connected with the annular channel 25, a restricted nozzle 20, the casing 2 and the casing 10. Hole 16 for measuring the pressure connected with the annular channel 25, irrespective of the angular position of the nozzle 20 relative to the outlet 10.

Another point 15 measurement through channel 26 running parallel to the axis 7, is connected with the annular channel 27, which is connected with another hole 17 for measuring pressure. By the way, which is not shown in detail, the outlet 10 also can be made of several parts, at least in the area of the channel 26, and the first item is still connected to the housing 2 or even forms a single whole, and the second item is inserted in the first part or covers the first item.

The channel 26 is formed between the sleeve 12 and the casing 10. In this example implementation, the outlet 10 is made of several parts, namely part 28, which is an integral part of the housing 2 and serves him right angle, and the part 29, which is connected with the part 28 in a known manner.

The channel 26 is also designed as an annular channel encompassing the sleeve 12. Since the channel 26 is located within the outlet 10, here the seal to the outside is not necessary. On the contrary, the annular channel 27 is sealed by two seals 21, 22.

As follows from figure 1, two measuring tube 18, 19 are mounted parallel to each other is se. Accordingly, two openings 16, 17 for measuring pressure are also parallel to each other. They are closed by caps 30, 31. To measure only need to remove both caps 30, 31. Then the technician can in one motion to insert into the holes 16, 17 are not shown, the measuring sensors are mounted on a common holder, which is also not shown. So, you only need one operation, which greatly facilitates the work of the contractor, in particular, if the valve is installed in hard to reach places.

If you insert the pressure sensors in the holes 16, 17 in a position impossible, then the nozzle 20 on the outlet 10 can be deployed in order to find a more comfortable position for input sensors into the holes 16, 17.

Two measuring tube 18, 19 divide the angle between the drain 10 and the longitudinal portion 11 of the housing 2 approximately in half. Of course, the angle at which are located the measuring tubes 18, 19, not necessarily is exactly 45°. He can lie in the range 20-70°. Preferably both of the measuring pipe 18, 19 are directed to the sinus, formed between the longitudinal portion 11 of the housing 2 and the casing 10.

A throttling element 8 is included in the channel 30 with the ball body 31. Ball body 31 can be rotated around the axis 7, to completely close the flow channel 3. Thanks to this site system on which regulates the flow, you can also overlap, for example,for maintenance.

Ball body 31 is fixed ring 32, which at its cylindrical wall has openings 33, through which pressure builds to the point 14 of the measurement.

If you want to work with a fixed flow orifice, it can be placed in the annular insert 32. In this case, the ring insert 32 in front of the flow aperture and after it in the direction of flow is provided by holes 33, connected either with the point 14 of the measurement, either with point 15 of measurement.

1. Valve (1) to adjust the flow, comprising a housing (2)having a flow channel (3) and outlet (10), located at an angle to the flow channel (3), and in the flow channel (3) set the throttle device (6)having a throttling element (8)which is driven through the outlet (10)and has two points (14, 15) measurement for measuring the pressure in the flow channel (3) on both sides of the inductor, each of which is through the channel (26, 27) measuring the pressure connected with a hole (17) for measuring pressure, characterized in that at least one channel (26) measuring pressure passes through the outlet (10).

2. The valve according to claim 1, characterized in that the outlet (10) is a sleeve (12)and the channel (26) of the measuring pressure is formed between the sleeve (12) and the wall of the outlet, at least part of its length.

3. The valve according to claim 2, characterized in that the throttling element (8) shall provide for the sleeve (12).

4. Valve according to any one of claims 1 to 3, characterized in that the two openings (16, 17) for measuring the pressure made in the measuring nozzles (18, 19), and the measuring tubes (18, 19) parallel to each other.

5. The valve according to claim 4, characterized in that the angle between the measuring nozzles (18, 19) and outlet (10) is from 20 to 70°.

6. The valve according to claim 4, characterized in that the measuring tubes (18, 19) is directed in the sinus between the outlet (10) and longitudinal section (11) of the housing (2) valves, covering the flow channel (3).

7. Valve according to any one of claims 1 to 3, characterized in that the outlet (10) is located between the channels (23, 25; 26) measurement of pressure, at least part of their length.

8. Valve according to any one of claims 1 to 3, characterized in that at least one hole (16, 17) for measuring the pressure made in the connecting element attached to the outlet (10) for rotation.

9. The gate valve of claim 8, wherein the connecting element is designed in the form of a nozzle (20)covering the outlet (10).

10. The valve according to claim 9, characterized in that between the nozzle (20) and the casing (10) has an annular channel (27).

11. Valve according to any one of PP and 10, characterized in that between the nozzle (20) and the housing (2) in the area of the end face of the nozzle (20) is formed by the annular channel (25).

12. The valve according to claim 11, characterized in that the annular channel (25) is limited to the outer stink the th-of-way.



 

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