Reducer and gas flow regulation method

FIELD: machine building.

SUBSTANCE: reducer comprises a case with three chambers divided by walls: a high-pressure chamber, a reduced pressure chamber and a regulation chamber, a partition coupled with a movable plunger diving the regulation chamber into a piston cavity and an annular cavity, a valve which is connected with the plunger, set in the high-pressure chamber, fitted with a sealing element interacting with a seat in the wall, the first channel connecting the reduced pressure chamber with the piston cavity of the regulation chamber, the second channel with a check valve connecting one of the regulation chamber cavities with the environment, the third channel with a regulated throttle connecting the high-pressure chamber with the piston cavity. The method involves the supply of gas to the piston cavity of the high-pressure chamber, delivery of gas to the reduced pressure chamber and to the consumer, it is possible to change the flow and pressure of gas delivered to the consumer, bleeding of gas from the piston cavity into the environment through the second channel.

EFFECT: reduced dimensions and weight of a reducer with low amplitude of pressure fluctuations.

10 cl, 4 dwg

 

The invention relates to gas pressure regulators, in particular, gearboxes breathing apparatus intended for lowering the pressure of the gas fed from tanks confinement.

The known method of operation of the device, reducing the pressure of the gas in the first chamber, under pressure, higher than in the second chamber, into which flows a reducible device gas (US patent No. 7093605 05.12.2002, claim US No. 2011/0100474 from 30.08.2004). The device consists of a casing divided by a partition into two chambers: the high-pressure chamber and a chamber of reduced pressure; a partition provided with an opening which has a plunger that is movable relative to the septum. Between the part surface of the plunger and the hole in the wall there is a gap, providing pressure reduction of the gas flowing from the high-pressure chamber into the chamber of low pressure. Diameter portion of the plunger, located in front of the partition corresponds to the diameter of the holes in it, and approaching the wall, can reduce and even stop the flow of gas from the high pressure chamber into the chamber of low pressure. Luggage low pressure separated by a piston connected to the plunger, two-cavity piston and podporchennuyu. Under the action of the difference of the forces from the pressure of the gas on the piston and the plunger of the latter under arrivalsa in the lower position, and the gas flows from the high-pressure chamber into the chamber of low pressure. By lowering the gas pressure acting on the piston, and if no valid additional forces the plunger moves up and closes the hole in the wall, interrupting the gas flow. To resume the flow of gas through the gap between the opening in the septum and the plunger must move the plunger with the piston down, affecting the external force. To keep the gas flow through this device, you must save the external force on the plunger or piston.

The disadvantage of this method is the impossibility of maintaining a continuous flow of gas under reduced pressure without application to the plunger external forces.

The known device (patent NL No. 1022455 from 01.09.2004, claim US No. 2002/0179634 from 30.01.2002) release gas under reduced pressure. For each device it is necessary to apply a force acting on the piston or plunger, and to hold it for the required time release gas from the container.

The known method of operation of the pressure reducing valve (PPM Golubev. Gas pressure regulators. - M.: Mashinostroenie, 1964, p.40), consisting of a body having a chamber of high pressure gas (VD), the gas chamber of the reduced pressure (EP), a partition with a hole that separates the camera VD and RD; plunger, located on Vigna in the hole walls with a gap between the surface of the hole and part of the surface of the plunger; part of the plunger serving in the camera VD, with the possibility of overlap of clearance when moving the plunger to the wall; a control chamber separated by a piston with a diaphragm connected to the plunger, the piston cavity, closed the lid, and podporchennuyu cavity; a channel connecting the camera VD with podpornoy cavity, a second partition separating the chamber RD and podporchennuyu cavity.

With the known method of operation of a pressure reducing valve to open it

- served in the piston cavity control pressure from a special source,

- move the piston and the plunger under the force created by the governing pressure acting on the piston, reducing gas flowing through the clearance between the plunger and the wall of the camera VD in the camera, KMG,

to regulate the pressure in the chamber RD, changing the control pressure of the gas supplied into the piston cavity, moving the plunger and changing the gap between the plunger and the wall,

- stop flow of gas into the chamber RD supply the control pressure in the piston cavity and connecting it with the atmosphere.

The disadvantage of this method is the need to have special equipment for feeding and regulating the control pressure.

Known gas reducer (patent RU №51761 U1 from 26.07.2005, RU # 72937 U1 dated 25.12.2007), comprising a housing, a cover, a Luggage vysokopostavlennye (CHP) gas connections inlet with filter, the camera reduced pressure (MRC) gas, the modulation chamber separated by a piston with a plunger on a two-cavity piston cavity and the annular cavity. In the casing hole connecting ARCS with MRC and acting MRC in the form of a conical seat, and at the end of the plunger is pressed sealing washer in contact with the saddle. MRC is connected with the piston cavity CR channel in the plunger, and environmental - channel with adjustable back-pressure valve. In the annular cavity between the housing and the piston installed spring, the dewatering of the plunger with the sealing washer from the valve seat and providing a connection ARC and MRC through the gap between the seat and the sealing washer, the flow through which gas is choked and enters the MRC reduced. When increased pressure in the MRC gas flows through the channel in the piston cavity and moves the piston with the plunger, reducing the gap between the seat and the sealing washer and, accordingly, the pressure in the MRC. When the magnitude of the gas pressure in the MRC more valid adjustable check valve opens, releasing the gas into the environment.

The disadvantage of this gas reducer gas supply to consumers, beginning with the pressure jump due to the presence of the maximum gap between the seat and the sealing washer, which is available in the absence of pressure in the ARC, as the spring on imeet the piston with the plunger, and the reduction of the gap is possible only in the presence of the ARC and MRC gas under pressure.

Known gas regulators and pressure regulators (patent RU №72936 U1 from 17.12.2007; EN 2132509 from 20.01.1998, RU # 2206116 from 06.04.2006, RU # 2237919 from 27.05.2003)having a membrane with a plunger and a fixed valve with the annular sealing element placed in the ARC.

In the method of operation of such a gas reducer spring installed between the cover and the membrane presses the valve from the seat, increasing the gap between the seat and the sealing element, and a gas under pressure beneath the membrane of the MRC through the channel connecting the MRC and the cavity under the membrane, creates a force acting on the diaphragm against the force acting on the diaphragm by a spring between the seat and sealing element.

A disadvantage of such a method of regulation that when the pressure of gas supplied to the ARC, for example, from a cylinder, there is intense pressure of gas supplied to consumers from MRC.

The known method of regulating the pressure of the gas flow in the gearbox (patent EP No. 1151364 B1 from 15.12.1999, 2, 3), with

- case and made it three divided by chamber walls:

- - high pressure chamber (HPC) and the camera reduced pressure (MRC), separated by a first wall;

- camera control (CU), separated by the second wall from Kam is ture MRC;

- hole with a saddle placed in the first wall;

- a partition with a movable plunger through a hole in the second wall separating the CU on the piston and the annular cavity;

- connected with the plunger and placed in the ARC or MRC valve with a sealing element that interacts with the saddle;

the first channel connecting one of the cavities CU camera under gas pressure;

the second channel with the throttle connecting the MRC with the annular cavity KR;

the third channel connecting the cavity under reduced pressure environment;

including

- the gas in the ARC, the displacement of the plunger with a partition and the formation of a gap between the seat and sealing element;

the gas flow through the channels in the cavity KR;

- move partition with the plunger and the valve under the influence of pressure difference of the gas, increasing the gap between the seat and sealing element of the valve;

- receipt of gas flow in the MRC and, accordingly, the gas consumer;

the gas flow through the second channel with the throttle in the annular cavity KR;

- the action of pressure difference of the gas barrier;

change (increase, decrease) the flow of gas to the consumer of the MRC, and the gas pressure in the MRC, causing the flow of gas between the MRC and cavities CU, moving partitions with plunger the valve in the direction of the resultant of all the forces, acting on the partition wall and the plunger, the change in the value of the gap between the sealing element of the valve and selome. corresponding to the displacement of the septum, as well as pressure and gas supply to consumers;

the gas release into the environment of the chambers or cavities KR connected with the environment via the third channel exceeds a given magnitude of the reduced pressure.

The disadvantage of this method of regulation is that the gas under pressure in the piston cavity KR served from MRC and ARC through the first and second channels with chokes that requires equipping the channel pressure sensors and an electronic controller, which complicates the regulation method.

The technical problem of the invention is reducing the size and weight of the pressure reducer gas fed from the source to the consumer, at low amplitude pressure fluctuations and flow.

The technical problem solved in the design of the gearbox, with

- case and made it three divided by chamber walls:

- - high pressure chamber (KB L) and the camera reduced pressure (MRC), separated by a first wall;

- camera control (CU), separated from the MRC second wall with a hole, and from the environment by a cover;

- hole with a saddle placed in the first wall;

- a partition that is connected with a movable plunger, passing chere is C the hole in the second wall, separating CU on the piston cavity and the annular cavity;

- placed in the cell and interacts with a movable plunger valve with a sealing element that interacts with the saddle;

the first channel connecting the MRC with the annular cavity KR;

a second channel connecting one of the cavities CU with the environment

thus

the control cavity is a piston cavity;

the second channel connects the piston cavity with the environment;

the second channel is connected a check valve, which can be adjustable, with the possibility of release of gas from the piston cavity to the environment;

The ARC is connected with the piston cavity of the third channel with the throttle, which can be adjustable;

the partition can be made in the form of a piston or diaphragm;

choke in the first channel can be adjustable;

the ARC can be installed spring supporting the valve, the valve is separated from the plunger.

The method of regulating the gas pressure in the reducer described above, includes

- the gas in the ARC, the gas flow into the piston cavity KR;

- displacement of the septum with the plunger, the education gap between the seat and sealing element of the valve, the gas flow from the ARC in the MRC and, accordingly, the gas consumer;

the flow of gas through the first channel with the Rossel in the annular cavity CU or out of it;

- change the flow and pressure of gas supplied to the consumer from the MRC, moving partitions with the plunger and valve sealing element in the direction of the resultant of all forces acting on the wall and the plunger, the change in the value of the gap between the sealing element of the valve and seat, corresponding to the displacement of the septum;

- the release of gas from the piston cavity to the environment through the second channel exceeds a given pressure values

thus

the gas enters the piston cavity of the ARC through the channel with the throttle;

the gas release into the environment of the piston cavity is made through the second channel and a check valve;

- when moving partitions with the plunger and valve, the gas flows through the first channel with the throttle of the MRC in the annular cavity;

the difference between the pressures and forces acting on the wall, causing it to move, changing the gap between the sealing element of the valve and seat and corresponding to this change in the regulation of the flow and pressure of gas in the MRC and the gas consumer.

The technical effect of reducing the size and weight of the pressure reducer gas fed from the source to the consumer, at low amplitude pressure fluctuations, is achieved through a new set of features gearbox:

the control cavity is p is sneva cavity;

the second channel connects the piston cavity with the environment;

the second channel is connected a check valve, which can be adjustable, with the possibility of release of gas from the piston cavity to the environment;

The ARC is connected with the piston cavity of the third channel with the throttle, which can be adjustable.

Technical effect can also be achieved by the distinguishing features of the process:

the gas enters the piston cavity of the ARC through the channel with the throttle;

the gas release into the environment of the piston cavity is performed via a second channel connected to a check valve;

- when moving partitions with the plunger and valve, the gas flows through the first channel with the throttle of the MRC in the annular cavity KR;

the difference between the pressures and forces acting on the wall, causing it to move, changing the gap between the sealing element of the valve and seat and corresponding to this change in the regulation of the flow and pressure of gas in the MRC and the gas consumer.

The set of features of the gear and the way it works is not found when conducting a patent information search, therefore, the technical solution meets the criterion of "novelty" and not explicitly known from the prior art, as obtained in the comparative test the gas reducers of various designs and characterized by different ways of working, therefore, the technical solution meets the criterion of "inventive step".

Figure 1 shows the gas reducer valve, placed in the ARC.

Figure 2 - gas gearbox to valve located in the ARC and with an adjustable choke in the first and third channels.

Figure 3 - gas reducer valve, placed in the cell and with a partition in the form of a membrane.

Figure 4 - gas gearbox with a spring in the high pressure chamber.

The method of regulating the flow of gas in the tank, with (1-4):

the housing 1 and is made in three divided by chamber walls:

- camera 2 high pressure (CHP) and the camera 3 reduced pressure (MRC), separated by a first wall 4;

- camera 5 regulation (CR), separated from MRC 3 second wall 6 with an opening 7, and from the environment by a cover 8;

hole 9 with the seat 10, is placed in the first wall 4;

the partition 11, is connected with a movable plunger 12 through a hole 7 in the second wall 6 dividing CR 5 on the piston cavity 13 and the annular cavity 14;

- placed in the cell 2 and cooperating with a movable plunger 12 valve 15 with the sealing element 16, which interacts with the saddle 10;

the first channel 17 with the choke 18 (1), connecting MRC 3 with the annular cavity 14 CR 5;

the second channel 19 with a check valve 20, which connects the piston cavity 13 with the he environment

the third channel 21 with the orifice 22, which may be adjustable connecting ARCS 2 with the piston cavity 13;

- in the first channel 17 can be installed adjustable choke 23 (2);

in ARC 2 can be installed spring 24 (figure 4), supporting the valve 15, the valve 15 is separated from the plunger 12.

The method of regulating the gas pressure in the reducer described above, includes

- the gas in the cell 2, the gas flow into the piston cavity 13 through the channel 21 with the choke 22;

- the offset of the partition 11 with the plunger 12, the education gap between the seat 10 and the sealing element 16 of the valve 15, the gas flow from the ARC 2 MRC 3 and, accordingly, the gas consumer;

the flow of gas through the first channel 17 with the orifice 18 in the annular cavity 14 or from it;

- change the flow and pressure of gas supplied to the consumer from MRC 3, movement of the partition 11 with the plunger 12 and the valve 15 with the sealing element 16 in the direction of the resultant of all forces acting on the partition wall 11 and the plunger 12, the change in the value of the gap between the sealing element 16 of the valve 15 and the saddle 10, corresponding to the offset of the partition 11 and corresponding to this change in the regulation of the flow and pressure of gas in the MRC and gas consumer;

- the release of gas from the piston cavity 13 into the environment through the second channel 19 and the reverse is LAPAN 20 exceeds a given pressure values.

1. Reducer containing
- case and made it three divided by chamber walls:
the high - pressure chamber and the chamber reduced pressure,
separated first wall;
the modulation chamber, separated from the camera of the reduced pressure of the second wall with a hole, and from the environment by a cover;
- hole with a saddle placed in the first wall;
- a partition that is connected with a movable plunger through a hole in the second wall of the separating chamber of the regulation on the piston cavity and the annular cavity;
- placed in the high pressure chamber and cooperating with a movable plunger valve with a sealing element that interacts with the saddle;
the first channel connecting the camera of the reduced pressure in the annular cavity chamber of the regulation;
a second channel connecting one of the cavities of the camera control environment,
characterized in that
the control cavity is a piston cavity;
the second channel connects the piston cavity with the environment;
the second channel is connected a check valve with release of gas from the piston cavity to the environment;
the high-pressure chamber connected to the third channel with the throttle with the piston cavity.

2. The gearbox according to claim 1, characterized in that the throttle in the first channel which is adjustable.

3. The gearbox according to claim 1, characterized in that the choke in the third channel is adjustable.

4. The gearbox according to claim 1,characterized in that the partition is made in the form of a piston.

5. The gearbox according to claim 1, characterized in that the partition is made in the form of a membrane.

6. The gearbox according to claim 1, characterized in that the throttle in the first channel is adjustable.

7. The gearbox according to claim 1, characterized in that the high-pressure chamber, a spring supporting the valve, the valve is separated from the plunger.

8. The gearbox according to claim 1, characterized in that the check valve is adjustable.

9. The method of regulating the gas pressure in the reducer contains:
- case and made it three divided by chamber walls:
the high - pressure chamber and the chamber reduced pressure, separated by the first wall;
the modulation chamber, separated from the camera of the reduced pressure of the second wall with a hole, and from the environment by a cover;
a saddle with a hole placed in the first wall;
- a partition that is connected with a movable plunger through a hole in the second wall of the separating chamber of the regulation on the piston cavity and the annular cavity;
- placed in the high pressure chamber and cooperating with the plunger valve with a sealing element that interacts with the saddle with zipper closures protect the holes in the saddle;
the first channel connecting the camera of the reduced pressure in the annular cavity chamber of the regulation;
a second channel connecting the piston cavity with the environment;
- return valve, connected to the second channel with the possibility of release of gas from the piston cavity to the environment;
the third channel with the throttle connecting the high pressure chamber with the piston cavity, including
- the gas in the high pressure chamber, the gas flow into the piston cavity;
- displacement of the septum with the plunger, the education gap between the seat and sealing element of the valve, the flow of gas from the high-pressure chamber into the chamber of the reduced pressure, and accordingly the gas consumer;
the flow of gas through the first channel with the throttle in the annular cavity of the chamber of control or out of it;
- change the flow and pressure of gas supplied to the consumer from the camera to the reduced pressure, moving partitions with the plunger and valve sealing element in the direction of the resultant of all forces acting on the wall and the plunger, the change in the value of the gap between the sealing element of the valve and seat, corresponding to the displacement of the septum;
- the release of gas from the piston cavity to the environment through the second channel exceeds a given pressure values
ex is different, however, what
the gas enters the piston cavity of the high-pressure chamber through the channel with the throttle;
the gas release into the environment of the piston cavity is made through the second channel and a check valve;
- when moving partitions with the plunger and valve, the gas flows through the first channel with a choke from the camera to the reduced pressure in the annular cavity;
the difference between the pressures and forces acting on the wall, causing it to move, changing the gap between the sealing element of the valve and seat and corresponding to this change in the regulation of the flow and pressure of gas supplied into the chamber reduced pressure and the gas consumer.

10. The method according to claim 9, characterized in that the release of gas from the piston cavity to the environment takes place through the second channel with an adjustable back-pressure valve.



 

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2 cl, 3 dwg

FIELD: mechanical engineering.

SUBSTANCE: one-way valve is designed with a possibility to connect a receiving chamber of a fluid medium in fluid communication with a chamber such as a dilution chamber or a mixing chamber, , for dilution or mixing of a perishable food product, such as a dairy product or a chocolate product, and forming a seal impermeable for the fluid medium between them. The mentioned valve comprises a relatively rigid valve seat and a relatively flexible valve element, overlapping the valve seat and forming an axially elongated normally closed opening of the valve between them, defining an inlet at one end of the valve seat, release at the opposite end of the valve seat and axially extending the seal between them, which forms the seal impermeable for the fluid medium between the inlet and outlet of the normally closed opening of the valve. The axially extending valve body is located at a distance relative to the valve element and forms a space between them, capable for moving through it the fluid medium for cleaning the valve and the chamber, receiving the fluid medium.

EFFECT: improvement of operating characteristics of the valve.

40 cl, 7 dwg

Control air valve // 2505730

FIELD: machine building.

SUBSTANCE: control valve 20 used for control over four-way hydraulic control valve 10 of air actuator 12 incorporates actuator rod 32, plate valve 28, intake opening 30, air signal intake opening 22, accumulating spring 40 and top spring 34. Apart from control valve 20, extra slide valve 24 is used arranged above said plate valve 28 to constrict air signal opening 22 and to cause pressure drop.

EFFECT: preset abrupt operation, increased delay of air locked valve.

2 cl, 3 dwg

FIELD: physics.

SUBSTANCE: air under regulated excess pressure is supplied to the chamber along the input channel through a reducing device from a source of compressed air. Using a system of valves, relief pressure is established and air is let out through the output channel to the relief system. When there is a pre-calculated positive or negative fall of regulated pressure inside the decompression chamber, the input and output valves are closed simultaneously using a device for protection from prohibitive pressure fall.

EFFECT: automatic blocking off of input and output air channels of a chamber when there is a sharp pressure fall inside a chamber and more reliable operation.

2 cl, 3 dwg

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