The damper smoothing pneumohydraulic

 

The damper is designed to protect the measuring equipment and automation systems from vibrations and shock waves. The damper includes a damping capacity, divided by the elastic membrane into two cavities, one of which is filled with gas, and the other is connected to hydrologically, while in the latter on both sides from the junction with the damping capacity of the set of flow restrictors, which are made in the form of a tee with two wall fittings for connection to the measuring system and one side fitting for connection with damping capacity, and in the flow channel of the tee installed packages throttle washers having a hole and split ring seal spacers placed symmetrically relative to the axis of the output side of the fitting tee. In addition, the damping capacity can be made in the form of a cylindrical Cup with a rigid rod mounted on its axis, and at the end of the rod opposite to the connection capacity with hydrologically fixed hemispherical boss, and a flexible membrane made in the form of a stocking, a blind end of which is mounted on a hemispherical boss, and the edges are pressed tightly to the base of the tank facing the strali. 5 C.p. f-crystals, 2 Il.

The invention relates to the field of protection measuring equipment (gauges, recording equipment and automation systems from vibrations and shock waves produced when the hydraulic system type pump equipment - pipeline.

When working pump stations, especially in regimes close to the maximum performance and the pressure in the pipeline there are oscillations of considerable amplitude, which lead, in the case of automatic control systems, for unauthorized operation of the protection of the setting of the maximum pressure and stop pumps. In addition, prolonged use measuring equipment (e.g., pressure) in intensive fluctuations in the measurement system leads to the release of equipment failure.

The well-known oscillation damper for pressure gauge containing the camera, placed on its internal wall of the elastic element made of porous rubber, and fittings with throttling orifices, one of which is supplied is placed in the camera tube, used for connection with a pressure gauge, and the other with a line (see ed. mon. The USSR 916812, M. CL.KSA devices and sensors, used in measuring systems (because it is designed to protect each individual measuring element of the system) and, secondly, the inability preset liquid level in the measuring system and thus response time, especially when you change the amplitude and frequency of oscillation of the measured parameters, which can lead to failure of the measuring device.

Closest to the proposed damper on the technical nature of a damper smoothing pneumohydraulic containing a damping capacity with a charging fitting, separated by an elastic membrane into two cavities, one of which is filled with gas, and the other is connected to hydrologically, and to switch to different modes with increasing operating pressure in the pipeline gas passage provided with a controllable powder pressure accumulators installed in its housing auth. St. USSR 844902, M. CL.3F 16 L 55/04, F 16 F 9/06, 1981) the disadvantages of this damper should be attributed, firstly, it normally requires a single use (because after testing regimes required reloading powder battery and reset the pressure in the gas cavity) and, secondly, the impossibility of its use in pne was to create the damper pressure fluctuations, allowing to reduce the amplitude or repay them in the desired frequency range measuring systems for protection of instrumentation and control automation installed on gas, oil and hydroperoxidase stations from mechanical damage and false positives limit pressures from the impact of pressure fluctuations in a wide range of frequencies and amplitudes that occur during the continuous operation of pumping units in different modes of working pressure.

This task is solved in that the proposed damper smoothing pneumohydraulic containing a damping capacity with a charging fitting, separated by an elastic membrane into two cavities, one of which is filled with gas, and the other is connected to hydrologically, which according to the invention in the supply lines on both sides from the junction with the damping capacity of the set of flow restrictors.

Another difference is that the flow restrictors are made in the form of a tee with two wall fittings for connection to the measuring system and one side fitting for connection with damping capacity, results in sealing spacers, placed symmetrically relative to the axis of the output side of the fitting tee.

Another distinctive feature of the device lies in the fact that the damping capacity made in the form of a cylindrical Cup with a rigid rod mounted on its axis, and at the end of the rod opposite to the connection capacity with hydrologically fixed hemispherical boss, and a flexible membrane made in the form of a stocking, a blind end of which is mounted on a hemispherical boss, and the edges are pressed tightly to the base of the tank facing to the place of its connection with hydrologically.

Another distinctive feature of the proposed device is that at the junction of the edges of the flexible membrane installed sealing metal ring forming the base of the cylinder and having a conical outer surface, to which the pressed edge of the membrane, and through the Central hole in the bottom of a cylindrical Cup and the hole of the sealing ring is omitted cylindrical tube, one end through which the fitting is connected through a tee with hydrologically, and the other end provided with a sealing sleeve having a conical outer surface, forming a conical surface of the sealing ring SASO presses the edge of the flexible membrane to the conical surface of the sealing ring with nuts, mounted on the thread tsilindricheskom the nozzle and contact the outer surface of the bottom of the cylindrical Cup.

Another distinctive feature of the device is that between the sealing metal ring and the bottom of the cylindrical Cup is placed a sealing ring of elastic material.

Another distinctive feature of the device lies in the fact that in the Central part of the sealing sleeve is cylindrical channel, which is a continuation of the inner channel of the cylindrical pipe, which is fixed to the rod connected to the Central rod mounted along the axis of the cylindrical channel, and at the base of the sealing sleeve is cylindrical recess in which is placed a ring liner, the end faces of which form a gap of annular cross-section with the surfaces of the cylindrical recess of the sealing sleeve and rod.

The technical result of the invention is that it provides continuous filtration occur in the system oscillations in a wide range of operating pressures and reliable operation of the entire complex measuring instruments and equipment installed on the supply lines.

The invention is illustrated with a drawing of the throttle washer in the supply lines in the section along a-a of Fig. 1.

The damper includes a damping capacity 1 and the tee 2. Tee 2 contains two transitional fitting 3 and 4 to connect the supply lines to the measuring system (not shown) and a lateral fitting 5 for connecting supply lines and measuring system with damping capacity of 1. Inside the flow channel 6 fittings 3 and 4 installed packages throttle spacers 7 with the holes 8, the split ring seal spacers 9 which are pressed to each other with nuts 10. Damping capacity 1 made in the form of a cylindrical Cup with a bottom 11 and a head 12 to which the screw attached cover 13 with a sealing ring gasket 14 and the annular washer 15. The cover 13 is provided a charging fitting 16. Inside the damping capacity 1 axis has a hard rod 17. At the end of the rod 17, opposite the junction capacitance 1 hydrologically fixed hemispherical boss 18. Inside the damping capacity 1 set of the elastic membrane 19, made in the form of a stocking, for example, of rubber, hollow end of which is mounted on a hemispherical boss 18, and the edges are introduced into the gap between the conical surfaces of the metal sealing sleeve 20 and the metal sealing ring 21 and clamped the bone 1 by means of a sealing ring 22 of elastic material, for example, rubber. Sealing sleeve 20 is made as a single unit with the pipe 23, which is passed through the Central hole of the metal ring 21, the sealing ring 22 of elastic material and the bottom 11 of a cylindrical Cup damping capacity 1. On the outer surface of the pipe 23 in close proximity to the outer surface of the bottom 11 of the damping capacity 1 made the thread, which includes a Union nut 24, which is pressed against the edges of the membrane 19 between the conical surfaces of the sealing sleeve 20 and the metal sealing ring 21, and the compression of the sealing ring 22 of elastic material. Thus, the membrane 19 divides the internal volume of the damping tank 1 into two hermetically separated cavities 25 and 26. When this cavity 25 through the pipe 23 and the transition valve 27 with a stop element (not shown) connected with a lateral fitting 5 tee 2 connected to hydrologically and measuring system (not shown). The cavity 26 is filled with damping medium (e.g. air) and through a charging fitting 16 is connected to the shut-off valve system refueling cavity 26 of the damping medium (not shown). In the Central part of the pack 23. The channel 28 has a piston rod 29 connected to the Central rod 17. At the base of the sealing sleeve 20 facing the cavity 25, is made cylindrical recess 30 in which is placed an annular liner 31 attached to the sealing sleeve 20 by means of screws 32. End surface of the annular liner 31 form a gap of annular cross-section with the surfaces of the sealing sleeve 20 and shaft 29 for the passage of the pressure wave of the fluid (e.g., antifreeze) from the supply lines into the cavity 25 of the damping capacity 1.

The proposed damper works as follows.

In the working position the tee 2 is installed in the pipe of the measuring system, and the damping capacity of 1 connected with a lateral fitting 5 through transition valve 27 with a stop element (not shown) that, when opened, the cavity 25 of the damping tank 1 is filled in the measuring environment, work under pressure measuring system. The cavity 26 through the valve (not shown) mounted on the charging socket 16 of the cover 13, is filled with damping medium (e.g. air) to the desired working pressure, and the valve on the charging socket 16, is sealed.

During operation of the measuring system pulse calebj washers 7 tee 2 and enters the cavity 25 of the tank 1, limited input and output packets throttle washers 7.

The cavity 25 of the container 1 is limited to the surface of the rubber sleeve 19, on the other hand which in the cavity 26 is, for example, air under pressure equal to the pressure in the cavity 25 when the pump is on.

Blanking pulse pressure occurs due to the presence of gas volume with sufficient initial volume to provide the necessary flexibility increases the volume of the cavity 25 through the compression of gas in the cavity 26 according to the law PV = const. Upon termination of the pulse received in the cavity 25, the working environment is slowly being squeezed out of it due to the higher pressure in the cavity 26 through orifice plates 7 to the measuring devices (not shown).

Thus, the damper ensures normal operation of the measuring system when the vibrations caused by the operation of pumps in the supply lines.

Claims

1. The damper smoothing pneumohydraulic containing a damping capacity with a charging fitting, separated by an elastic membrane into two cavities, one of which is filled with gas, and the other is connected to hydrologically, characterized in that the supply lines on both sides from the place soo types of flow restrictors made in the form of a tee with two wall fittings, to connect with the measuring system, and one side fitting for connection with damping capacity, and in the flow channel of the tee installed packages throttle washers having a hole and split ring seal spacers placed symmetrically relative to the axis of the output side of the fitting tee.

3. The damper under item 1 or 2, characterized in that the damping capacity made in the form of a cylindrical Cup with a rigid rod mounted on its axis, and at the end of the rod opposite to the connection capacity with hydrologically fixed hemispherical boss, and a flexible membrane made in the form of a stocking, a blind end of which is mounted on a hemispherical boss, and the edges are pressed tightly to the base of the tank facing to the place of its connection with hydrologically.

4. The damper under item 3, characterized in that the junction of the edges of the flexible membrane installed sealing metal ring forming the base of the cylinder and having a conical outer surface, to which the pressed edge of the membrane, and through the Central hole in the bottom of a cylindrical Cup and the hole of the sealing ring is omitted cylindrical tube, one end to the sleeve, having a conical outer surface, forming a conical surface of the sealing ring gap, in which is placed the edge of the elastic membrane, and the conical surface of the sealing sleeve tightly presses the edge of the flexible membrane to the conical surface of the sealing ring by a nut mounted on the threaded on the cylindrical tube and in contact with the outer surface of the bottom of the cylindrical Cup.

5. The damper under item 4, characterized in that between the sealing metal ring and the bottom of the cylindrical Cup is placed a sealing ring of elastic material.

6. The damper under item 4 or 5, characterized in that the Central part of the sealing sleeve is cylindrical channel, which is a continuation of the inner channel of the cylindrical pipe, which is fixed to the rod connected to the Central rod mounted along the axis of the cylindrical channel, and at the base of the sealing sleeve is cylindrical recess in which is placed a ring liner, the end faces of which form a gap of annular cross-section with the surfaces of the cylindrical recess of the sealing sleeve and the rod.

 

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FIELD: mechanical engineering.

SUBSTANCE: damper has housing (1) provided with working cylinder (5), which receives rod (8) and piston (7). Working cylinder (5) and bearing (9) are locked against axial movement. Nut (13) is provided with gasket (16). The housing is covered with lid (21).

EFFECT: enhanced reliability.

5 cl, 2 dwg

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