RU2634165C1 - Valve - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: valve has a body accommodating inlet and outlet channels and a spring-loaded shut-off element. Control sensor is located in body with the possibility of shut-off element position check in part free from the spring. At that a response element is formed on the body of the shut-off element at the site corresponding to the measurement of said sensor.

EFFECT: increased valve functionality due to possibility of remote determination of the shut-off element position, with simultaneous increase of its application safety due to possibility of remote control of the entire valve operation.

6 cl, 25 dwg

Description

The present invention relates to the field of valve production and can be used to control the working environment, as well as to prevent emergencies in pipeline systems.

Known shut-off valve [patent for invention RU 2093748, IPC F16K17 / 22, publ. 20.10.1997], comprising a housing with an inlet channel in communication with the inlet cavity and an outlet channel in communication with the outlet cavity, a saddle and a normally open locking member located in the inlet cavity.

A disadvantage of the known technical solution is its low functionality and safety in its application, since there is no possibility of remote determination of the position of the shut-off element, and, as a result, it is difficult to control the health of the entire valve.

The objective of the present invention is to develop a new shut-off valve with the achievement of the following technical result, namely, increasing its functionality due to the possibility of remote sensing in which position the locking element is located, while improving its safety due to the possibility of remote monitoring of the health of the entire valve.

The problem is solved due to the fact that at least one control sensor is inserted in the valve, which includes the inlet and outlet channels and the spring-loaded locking element according to the present invention, located in the housing with the ability to control the position of the locking element in part at least one response element is formed on the body of the locking member in a place corresponding to the measurement of said sensor on the body of the locking member.

There are options when:

- an induction sensor is used as a control sensor;

- an electromechanical contactor is used as a control sensor;

- a protrusion is formed as a response element;

- the control sensor is connected to the valve control unit;

- the control sensor is connected to the valve status indication unit.

Thus, the claimed invention with its entire set of features allows to increase the functionality of any valve due to the ability to remotely determine in which position the shut-off element is located, and at the same time increase the safety of its use due to the possibility of remote monitoring of the health of the entire valve, due to the presence of at least one control sensor that allows you to determine the position of the locking element during operation of the valve.

The proposed solution can be used in any type of valve, including shutoff valves - normally open and normally closed, as well as shutoff valves - normally open.

In FIG. 1 shows an embodiment of a normally-closed shut-off valve in the closed position (with a vertical arrangement of a control automatic drive).

In FIG. 2 is a section A-A of FIG. one.

In FIG. 3 shows a normally closed shut-off valve in the “open” position.

In FIG. 4 shows an embodiment of a normally-open shutoff valve in the “open” position (with a vertical arrangement of a control automatic drive).

In FIG. 5 is a section A-A of FIG. four.

In FIG. 6 shows a normally-open shutoff valve in the “open” position.

In FIG. 7 shows an embodiment of a normally-open shut-off valve in the “open” position (with a horizontal arrangement of a control automatic drive).

In FIG. 8 is a section A-A of FIG. 7.

In FIG. 9 shows a normally-open shut-off valve in the closed position.

In FIG. 10 shows another embodiment of a shut-off normally-open (emergency) valve in the “open” position (front view).

In FIG. 11 is a section A-A of FIG. 10.

In FIG. 12 is a section BB of FIG. 10.

In FIG. 13 is a section bb of FIG. eleven.

In FIG. Figure 14 shows a shut-off valve normally open (emergency) in the closed position (side view in section).

In FIG. Figure 15 shows a shutoff valve normally open (emergency) in the locked position (side view in section).

In FIG. 16 shows another embodiment of a normally-open shut-off valve (without locking in the closed position) in the open position (front view).

In FIG. 17 is a section A-A of FIG. 16.

In FIG. 18 is a section B-B of FIG. 16.

In FIG. 19 is a section bb of FIG. 17.

In FIG. Figure 20 shows a normally-open shut-off valve (without locking in the closed position) in the closed position (sectional side view).

In FIG. 21 shows an embodiment of a shut-off normally-closed valve (opens upon a signal) in the closed position (front view).

In FIG. 22 is a section A-A of FIG. 21.

In FIG. 23 is a section BB of FIG. 21.

In FIG. 24 is a cross-section BB of FIG. 22.

In FIG. 25 shows a shut-off valve normally closed (opens upon a signal) in the “open” position (side view in section).

1 - the main body;

2 - pipe;

3 - input fitting;

4 - output fitting;

5 - atmospheric channel;

6 - gate valve;

7 - clamping spring;

8 - lock;

9 - working cavity of the housing;

10 - discharge cavity of the housing;

11 - atmospheric cavity of the housing;

12 - holes in the lock;

13 - control channels;

14 - channels for supplying a control medium;

15 - body of the electromagnetic drive;

16 - an electromagnet;

17 - an electromagnet spring;

18 - a rod with an electromagnet spool;

19 - handle mechanical drive;

20 - clamping piston of a mechanical drive;

21 - a stopper with the filter;

22 - control unit housing;

23 - drainage handle;

24 - clamping piston drainage;

25 - drainage channel;

26 - latch;

27 - mechanical valve stopper;

28 - spring mechanical stopper valve;

29 - position sensor of the gate valve;

30 - a response element of the gate valve;

31 - sealing shoulder.

The valve (Fig. 1-25) includes a collapsible housing (Fig. 1-9) or one-piece (Fig. 10-25), inside which a cavity is formed.

Collapsible housing (Fig. 1-9) consists, for example, of the main body 1 and the pipe 2, within which a cavity is formed, and contains an inlet fitting 3 and an outlet fitting 4 located coaxially or misaligned (not shown), atmospheric channel 5, connecting the body cavity with the atmosphere. Moreover, the fittings 3 and 4 in the collapsible and integral body can be made in one piece with the valve body (in Fig. 7 and 9, the output fitting is part of the pipe 2). In the embodiment, the valve body is one-piece - the valve has only the main body 1. There is a locking mechanism in the body. There is a control unit integrated or separately attached to the valve body.

The locking mechanism includes a locking valve 6, equipped with a clamping spring 7, which holds the locking valve 6 in a position that allows or blocks the duct in the pipeline (depending on the version of the valve), and a lock 8. The locking valve 6 is located in the cavity of the housing and divides it into a working cavity 9, injection cavity 10 and atmospheric cavity 11 associated with the atmosphere by said atmospheric channel 5. Lock 8 is located in the working cavity 9 of the valve body and at least one passage opening 12 is formed therein Reda. If there is one hole 12, it can be made, for example, circular. If there are several holes 12, they can be located, for example, in a circle.

The locking mechanism is equipped with sealing elements (shown in the drawing conditionally), preventing leakage.

The control unit comprises an automatic drive and a mechanical drive, which can be located at an angle relative to each other (for example, 90 °), as shown in FIG. 1-6, and on parallel axes, as shown in FIG. 7-15 and also coaxially as shown in FIG. 16-25.

Said actuators are connected by channels 13 for supplying a control medium to a working cavity 9 of the valve body and control channels 14 with a discharge cavity 10 of the valve body. The channels 13 for supplying the control medium supply the control medium to the inputs of the drives, and the control channels 14 divert the medium from the drives after they are triggered.

As an automatic drive can be applied electromagnetic (Fig. 1-25), hydraulic (not shown), pneumatic (not shown). The electromagnetic drive includes a housing 15 (in the case of embedding the control unit in the valve body or in an independent body, its function is performed directly by the valve body or the independent body of the control unit), in which are located an electromagnet 16, equipped with a spring 17, and a rod 18 with a spool equipped with sealing elements (shown conventionally in the drawing).

The mechanical drive includes a handle 19 and a clamping piston 20 connected to it, equipped with sealing elements (conventionally shown in the drawing).

A plug 21 with a filter can be located between the automatic and mechanical drives, reducing the risk of clogging of the control channels 14 (Figs. 1-6, 17, 18, 20, 22, 23, 25). If there is a plug 21, the channels 13 for supplying a control medium connect it with the working cavity 9 of the valve body.

In the case of a shut-off valve, the mechanical and automatic actuators can be combined, and the handle 19 of the mechanical actuator can be moved to an automatic actuator.

The control unit can be made: in an independent housing 22 (Fig. 16-25), made with the possibility of connection with the valve body, i.e. on the valve body and on the body of the control unit there are counter mounts (not shown in the drawing); with the possibility of full integration into the valve body (Fig. 10-15); with the possibility of partial integration into the valve body (Fig. 1-9), while the automatic drive can be moved outside the valve body (Fig. 1-9). The choice of embodiment is determined for a particular case and depending on the design features of the entire product or system in which this valve will be used, as well as on the basis of the vibration characteristics of the entire structure.

In this case, the locking mechanism can be located inside one part (for example, the bottom) of the entire device, and the control unit inside the other (for example, the top). This allows you to reduce vibration and breaking stress on the joints of the parts during operation, to exclude the possible jamming of the valve 6.

In addition, in the case of placing the control unit in an independent housing 22 at the transition point of the supply channels 14 and control channels 13 from the housing 22 to the valve body, adapters (conventionally shown in the drawing) can be formed to ensure the tightness of the connection.

In the embodiment of the shutoff valve (Fig. 1-6), a drainage may be additionally introduced into the housing, comprising a handle 23 and a pressure piston 24 connected to it, equipped with sealing elements (conventionally shown in the drawing) and connected to the atmosphere, which is provided through the drainage channel 25, connected to control channels 14. Drainage allows you to return the gate valve 6 in a closed or open state, depending on the type of valve.

Other embodiments of the inventive valve and control unit are also possible. For example, in FIG. 10-15, three positions are shown “open”, “closed”, “fixed” the shut-off valve normally open (emergency), which closes when pressure is lost and is locked in the closed position by a signal, for example, using at least one latch 26, associated with a mechanical stopper 27 of the valve 6, equipped with a spring 28.

In FIG. 16-20 shows two positions “open” and “closed”, the shut-off valve normally open (without locking in the closed position), which is closed by the combined signal of the sensors (not shown) of the pressure and flow associated with the valve and fixing a critical drop pressure and high fluid flow rate in the pipeline.

In FIG. 21-25, two “closed” and “open” positions are shown, a normally-closed shut-off valve that opens by a remote manual control signal (not shown in the drawing) or from a fire detection system (not shown in the drawing) with which the valve is connected.

At least one control sensor 29 for the position of the gate valve 6 is introduced into the valve design. The sensor is located in the housing with the ability to control the position of the gate valve 6 and is installed vertically, horizontally or at an angle at any place throughout the part of the gate valve 6 that is free of spring 7. On at least one mating element 30, for example, a protrusion or influx, is formed in the body of the shutter valve 6 in a place corresponding to the location of said sensor 29, for interaction with the sensor 29, since the contactless dates iki sensitive to a change in conductivity of the medium, and the sensors necessary for the contact interaction of the sensor and the shut-off valve 6. The sensor 29 may be constructed as the principle of non-contact measurement and contact. Therefore, an induction, optoelectronic and other non-contact sensor or mechanical contactor with an electric, hydraulic or pneumatic external drive can be used as a sensor 29. The most preferred from the point of view of reliability and ease of use are the induction and electromechanical contactor (reed switch). At the same time, hydraulic and pneumatic position sensors are most used in non-electric systems. It is worth noting that it is possible to use a combination of these sensors. Moreover, when using one sensor 29, it is possible to determine the required (predetermined) position of the gate valve 6 or its absence in this position. The use of at least two sensors 29 makes it possible to determine both extreme positions of the gate valve 6 completely “closed” and completely “open” or its intermediate positions. Each sensor 29 can be connected to a valve control unit (not shown) and a valve status indication unit (not shown), which can be combined in an executing (switching) electronic device (not shown) provided with panels ( not shown in the drawing) valve status indications for visual monitoring and automatic signaling in the event of a malfunction and connected to actuating devices (not shown in the drawing) creating pressure of the working medium in the pipeline (pumping stations tion, etc.), for their possible stop in an emergency. Thus, due to the presence of sensors 29, it becomes possible to remotely determine what position the shutter valve 6 is in, which allows remote control of the health of the entire valve during operation.

The valve body, shut-off valve 6, lock 8 are made of stainless steel or non-ferrous alloys, such as brass.

The gate valve 6 is made in the form of a hollow tube-piston, through which a controlled flow under pressure is directed from the inlet fitting 3 to the outlet fitting 4. The fittings 3 and 4 can be made in the form of nozzles or as fixed parts of the housing. The locking valve 6 is pressed by the spring 7 to the end sealing collar 31, made in the form of a tube (Fig. 1-9) or nozzles on the lock 8 (Fig. 10-25).

The valve position during installation on the pipeline can be any. The operating pressure in the pipeline and valve can be any from 0.01 to 2000 kg / cm2 or more. The working medium in the valve can be any (pneumatic, hydraulic, oil, water, for viscous media, self-lubricating, etc.). The valve cross section may be any one from 1 to 3000 mm or more.

When increasing the inlet diameter of the valve, it is necessary to increase the size and force of the clamping spring 7 of the gate valve 6, and accordingly, the diameter of the control channel 14, sufficient to compress the spring 7. When reducing the inlet diameter, vice versa.

The operation of the inventive valve is shown on the example of the valve options of FIG. 1-9.

In the initial position, the valve shut-off normally closed is closed (Fig. 1), i.e. the electromagnet 16 is not energized, the piston rod 18 and the mechanical drive handle 19 connected to the pressure piston 20 close the control channels 14, the pressure of the control medium on the gate valve 6 is “0”, the gate valve 6 abuts the lock 8 under the action of the pressure spring 7 (through the sealing collar 31). In the operating position (Fig. 3), the normally-closed shut-off valve is open, i.e. The electromagnet 16 is energized, the piston rod 18 with a spool or the handle 19 of the mechanical actuator with the pressure piston 20 are moved to the position that opens the cross section of the control channels 14, the control medium is supplied to the shutoff valve 6 through the inlet spools 18 or the mechanical actuator piston 20 increasing the pressure on it, the spring 7 is compressed by the pressure of the control medium and the shutoff valve 6 moves to the open position.

In the initial position, the valve shut-off normally-open - open (Fig. 4), i.e. the electromagnet 16 is not energized, the piston rod 18 and the mechanical drive handle 19 connected to the pressure piston 20 close the control channels 14, the pressure of the control medium at the gate valve 6 is "0", the gate valve 6 is in the open position under the action of the spring 7. In the operating position (Fig. 6), the normally-open shut-off valve is closed, i.e. The electromagnet 16 is energized, the piston rod 18 with the spool or the handle 19 of the mechanical drive with the pressure piston 20 are moved to the position that opens the cross section of the control channels 14, the control medium is supplied to the shut-off valve via the feed channels 13 through the valve stem 18 or the pressure piston 20 of the mechanical drive 6, increasing the pressure on it, the spring 7 is compressed by the pressure of the control medium and the shutoff valve 6 moves to the closed position, pressing against the lock 8 (through the sealing collar 31).

In the operating position, the shut-off valve is normally open — open (Fig. 7), i.e. the pressure of the control medium is equal to "0", the control medium is supplied to the shutoff valve 6; the spring 7 is compressed by the pressure of the control medium, the shutoff valve 6 is in the open position. In the emergency position (Fig. 9), the normally-open shut-off valve is closed, i.e. the pressure of the control medium in the pipeline tends to "0" due to uncontrolled rupture of the nearest section of the pipeline; the pressing spring 7, without being subjected to resistance to the counter pressure of the control medium, is unclenched and the gate valve 6 moves to the closed position by pressing it against the lock 8 (through the sealing collar 31). To keep the gate valve 6 in emergency position, both actuators must be moved to the closed position.

To transfer the shut-off valve to its original position, it is necessary:

a) either relieve pressure at the valve inlet, i.e. on the pipeline to the valve inlet;

b) either move both actuators to the closed position and open the drainage channel 25, which relieves pressure in the control channel 14.

To transfer the shut-off valve to its original position, it is necessary:

a) increase the pressure at the valve inlet, i.e. on the pipeline to the valve inlet;

b) if both actuators have been moved to the “closed” position, then simultaneously with increasing the pressure at the valve inlet, move both actuators to the “open” position.

When the locking element 6 is displaced due to the pressure of the working medium or the spring 7, its response elements 30, moving under the contact of the control sensor 29, close the electromagnetic field (or interact with the sensitive element of the contactor), while the sensor 29 passes through it electric current or other medium (in the case of hydraulic or pneumatic), fixing whether there is a conductive medium in this place (response element 30 of the locking member 6). In the case of using a pneumatic or hydraulic position sensor, a mechanical contactor is used in conjunction with the locking member 6, which, interacting with the protrusion (mating element 30) of the locking member 6, opens a duct for air or liquid in the position sensor, thereby fixing the position of the locking member 6.

Based on the data obtained from the control sensor 29, a conclusion is made about the state of the locking member 6 and the valve as a whole. In case of emergency, take appropriate measures.

Claims (6)

1. The valve, comprising a housing in which the input and output channels are formed and a spring-loaded locking element is located, characterized in that at least one control sensor is introduced, located in the housing with the ability to monitor the position of the locking element in a part free of spring, and at least one response element is formed in the body of the locking member in the place corresponding to the measurement of said sensor. 2. The valve according to claim 1, characterized in that an induction sensor is used as a control sensor. 3. The valve according to claim 1, characterized in that an electromechanical contactor is used as a control sensor. 4. The valve according to claim 1, characterized in that a protrusion is formed as a response element. 5. The valve according to claim 1, characterized in that the control sensor is connected to the valve control unit. 6. The valve according to claim 1, characterized in that the control sensor is connected to the valve status indication unit.

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