RU2640971C1 - Manual hydraulic pump for emergency control of ball valve drive - Google Patents

Abstract

FIELD: machine engineering.SUBSTANCE: pump contains a body, a manual piston mechanism and a body bonnet, movable self-aligning bushings with sealing seats. In the head there is a spool valve with channels communicating with the body. Suction and discharge valves are made in the form of a spring-loaded ball, interconnected with the seat. The head cover is closed by a lid, through which the spindle with the handle is passed. The piston mechanism is made of a double cylinder, pistons of which are connected by a rocker. Cylinders are connected by channels with suction and discharge valves. The exit from the first suction valve and the inlet to the first delivery valve by the channels are connected to the first cylinder. The exit from the second suction valve and the inlet to the second delivery valve by the channels are connected to the second cylinder. The inputs to both suction valves are connected to each other and to the distributor by a channel. The outlets from both pressure valves are connected to each other and to the hydraulic distributor by an appropriate channel. Saddles of all pump valves are made in the form of washers with sealing rings on the outer surface and have a working surface designed to interact with the ball from each end of the seat with the ability to rotate the seat if one side of its working surface is damaged before contacting the ball with the other side of the working surface of the seat. The spool of the hydraulic distributor is made in the form of a ball plug, the spherical surface of which is interfaced to the movable self-aligning bushings with sealing seats located in the channels connected to the suction and discharge valves and to the ports of the fittings connected to the cavities of the cylinders of the pneumatic hydraulic actuator.EFFECT: safety of the pipeline process is ensured by increasing the speed of the hand pump in an emergency situation.6 dwg

Description

The invention relates to pipe fittings and can be used in the gas, oil, chemical industry as an emergency drive of a main ball valve.

A manual hydraulic pump for emergency control of a ball valve actuator is known, comprising a housing, a piston mechanism equipped with a manual drive, and a housing ogolovin, in which a spool valve with channels communicating with the housing is located, a suction and discharge valves, in the form of a spring ball connected to the seat , while the ogolovnik is closed by a cover through which a spindle with a handle is passed, movable self-aligning bushings with sealing seats (patent RU 2062356, F04B 9/14, published on 06/20/1996).

This technical solution has an inherent set of features that is closest to the set of essential features of the invention, it has an appointment that matches the purpose of the invention and is closest in terms of the result achieved, therefore it is taken as a prototype.

The disadvantage of this manual pump is that a small gap is made between the rotary valve and the casing and a sealing ring is installed, as a result of contamination of the working fluid by extraneous inclusions, turning the handle of the hydraulic distributor will require great efforts. The increase in gaps in the contact zone of the rotary valve with the housing will lead to difficulties in ensuring the tightness of the cylinder cavity relative to the channels of the valve.

The technical result from the use of the invention is to ensure the safety of the pipeline process by increasing the speed of the hand pump in an emergency by increasing the productivity and continuity of the pressure of the hydraulic fluid in the pipeline.

Below are disclosed all the general and particular essential features of the invention, characterizing their causal relationship with the specified technical result, sufficient for implementation by a person skilled in the art.

A manual hydraulic pump for emergency control of a ball valve actuator comprises a housing, a piston mechanism equipped with a manual drive, and a housing ogolovnik, movable self-aligning bushings with sealing seats. In the headband there is a spool valve with channels in communication with the housing. The pump is equipped with suction and discharge valves in the form of a spring-loaded ball mated to a seat. The headband is covered with a cover through which a spindle with a handle is passed. The piston mechanism is made of a two-cylinder, the pistons of which are interconnected by a lever made in the form of a rocker. The cylinders are connected by channels to the indicated suction and discharge valves located in the housing. The outlet from the first suction valve and the inlet to the first discharge valve are connected to the first cylinder by the channels, the outlet from the second suction valve and the entrance to the second discharge valve are connected to the second cylinder by channels. The inlets to both suction valves are connected to each other and to the directional control valve. The outlets from both discharge valves are connected to each other and to the control valve by a corresponding channel. The saddles of all pump valves are made in the form of washers with o-rings on the outer surface and have a working surface configured to interact with the ball from each end of the saddle with the possibility of turning the saddle if one side of its working surface is damaged before the ball contacts the other side of the working surface of the saddle. The valve spool is made in the form of a ball plug, the spherical surface of which is interfaced with movable self-aligning bushings with sealing seats located in the channels connected to the suction and discharge valves and the nozzle channels connected to the cylinder cavities of the pneumatic-hydraulic drive for opening and closing the ball valve.

The invention is illustrated by drawings, where in FIG. 1 is a sectional view of a manual hydraulic pump along cylinders; in FIG. 2 - section of a manual hydraulic pump in a plane perpendicular to the section in figure 1; in FIG. 3 is a view of figure 1 in section AA in the position of the rotary spool "automatic"; in FIG. 4 is a view of figure 1 in section AA in the position of the rotary valve "close"; in FIG. 5 is a view of figure 1 in section AA in the position of the rotary valve "opening"; in FIG. 6 is a view of figure 1 in section BB.

A manual hydraulic pump for emergency control of a ball valve actuator comprises a housing 1, a piston mechanism equipped with a manual drive, and a body cap 2.

In ogolovnik 2 posted spool valve with channels in communication with the housing 1.

Golovinnik 2 is equipped with a cover 3, cylinders 4, a cylinder cover 5, studs 6 and nuts 7. Between the housing 1 and the cylinders 4 are spacers 8 with O-rings 9.

Through the cover 3 passes the spindle 10, which is connected to the handle 11 by means of a key 12.

The spindle 10 rotates in the bearing 13 and is sealed with a rubber ring 14.

Pistons 15 are located in the cylinders 4 with the possibility of movement in the bushings 16.

The bushings 16 are sealed relative to the cylinders 4 and pistons 15 with rubber rings 17.

The bushings 16 are fixed in the cylinders 4 by the cover of the cylinders 5.

The pistons 15 are connected to the lever 18 through the axis 19 and the rod 20.

The lever 18 is made in the form of a rocker arm, which rests on the lid 5 with the middle part and is connected to it via the axis 19.

The housing 1 is made with channels in which the suction valves 21 (see Fig. 6) and the discharge valves 22, the process plugs 23, the valves 21 and 22 contain a ball 24, pressed by the springs 25 to the seat 26.

The saddles 26 have a working surface, with which they interact with the ball 24, made at each end of the seat 26 so that if the working surface of the saddle 26 is damaged on one side, the saddle 26 can be deployed and interact with the ball 24 with the working surface on the other side.

In the suction valves 21, the ball 24 with the spring 25 is placed in the guide sleeve 27.

Balls 24 with springs 25 of pressure valves 22 are located in the guide sleeve 28. The suction valves 21 and pressure valves 22 are removable and fixed in the channels of the housing 1 by caps 29 and bolts 30.

The guide bushings 27 and saddles 26 are sealed with rubber rings 31. In the housing 1, the channel connecting the suction valves 21 to each other is connected to a fitting 32 for connecting to an expansion tank (not shown).

The control valve (see Fig. 2) contains a rotary valve 33 made in the form of a ball plug rotating in supports 34.

The spindle 10 enters the groove on the rotary valve 33 with the possibility of rotation by the handle 11 in the bearings 34 in three positions: "opening", "automatic", "closing".

In the rotary valve 33, channels are made that: in the "open" position (see Fig. 5) connect the movable self-aligning sleeve with the sealing seat 35 and rubber rings 36 connected by channels to the suction valves 21 (see Fig. 2) with the fitting 37 designed to connect to the cylinder cavity of the hydraulic actuator for closing (not shown), and the movable self-aligning sleeve with a sealing seat 38 connected by channels to the discharge valves 22 (see Fig. 2) with a fitting 39 intended to connect to the qi cavity Indra pnevmogidroprivoda the opening (not shown).

In the "closed" position (see Fig. 4), a movable self-aligning sleeve is connected with a sealing seat 35 connected by channels to the suction valves 21 (see Fig. 2) with a fitting 39 designed to connect to the cylinder of the hydraulic actuator for opening (not shown) ) A movable self-aligning sleeve with a sealing seat 38, connected by channels with pressure valves 22 (see Fig. 2) with a fitting 37, designed to connect to the cylinder of the pneumatic actuator for closing (not shown).

In the "automatic" position (see Fig. 3), the sealing seats 35 and 38 are closed. The fitting 39, designed to connect to the cylinder cavity of the pneumatic actuator to open (not shown), is connected to the fitting 37, which is intended to connect to the cylinder cavity of the pneumatic actuator to open (not shown).

In the control valve in the channels in which the fittings 37 and 39 are located, movable self-aligning bushings with a sealing seat 40 and elastic elements 41 are installed, which press the sealing self-aligning bushings with a sealing seat 40 to the surface of the rotary valve 33, covering the channels of the rotary valve 33 with the possibility of sealing .

The movable self-aligning bushings with a sealing seat 35 and 38 are removable and fixed in the channels of the hydraulic distributor with caps 42 and bolts 43.

In the hydraulic distributor in the channels in which the movable self-aligning bushings with a sealing seat 35 and 38 are installed, elastic elements 41 are also installed that press the self-aligning bushings with a sealing seat 35 and 38 against the surface of the rotary valve 33, covering the channels of the rotary valve 33 with the possibility of sealing .

Comparison of the claimed technical solution with the prior art known from the scientific, technical and patent documentation as of the priority date in the main and related sections did not reveal a tool that has features identical to all the features contained in the claims proposed by the applicant, including the purpose of the application. Those. the set of essential features of the claimed solution was not previously known and is not identical to any known technical solutions, therefore, it meets the condition of patentability "novelty".

This technical solution is industrially applicable, since its purpose is indicated in the description of the application and title of the invention, it can be manufactured industrially and used for use in ball valves.

The technical solution is workable, feasible and reproducible, and the distinguishing features of the device allow to obtain the desired technical result, i.e. are significant.

The invention in the form as described in the formula can be carried out using the means and methods described in the prototype - patent RU 2062356, which became public until the priority date of the invention.

Therefore, the claimed technical solution meets the condition of patentability "industrial applicability".

An analysis of the known technical solutions in the art showed that the proposed technical solution does not follow explicitly from the prior art for the specialist, since solutions having features matching his distinctive features are not identified, and the known effects of the distinctive features on the identified solutions are not confirmed the technical result indicated in the application materials.

Those. the claimed solution has features that are not found in the known technical solutions, and the use of these features in the claimed combination of essential features makes it possible to obtain a new technical result - ensuring the safety of the pipeline process by increasing the speed of the hand pump in an emergency by increasing the productivity and continuity of the hydraulic pressure in the pipeline.

Therefore, the proposed technical solution can only be obtained through a creative approach and is not obvious to the average person skilled in this field, i.e. has an inventive step in comparison with the existing level of technology.

The implementation of the claimed invention is achieved by the implementation of this purpose.

To confirm the feasibility of carrying out the invention, the following information about the operation of the device is disclosed, disclosing how the invention can be implemented with the realization of the destination indicated by the applicant and with confirmation of the possibility of achieving a technical result in carrying out the invention.

Hand hydraulic pump for emergency control of the ball valve operates as follows.

If necessary, to ensure the operation of the drive in automatic mode from air or gas pressure, the handle 11 of the manual hydraulic pump is rotated together with the spindle 10, the rotary valve 33 to the "automatic" position.

With this position of the handle 11, the sealing seats 35 and 38 are closed (see Fig. 3), and the fitting 39 connected to the cylinder cavity of the pneumatic actuator for opening (not shown) is connected to the nozzle 37 connected to the cylinder cavity of the pneumatic actuator for closing (not shown) )

Through the channel of the spool 33, the working fluid freely flows from the cylinder cavity to “open” into the cylinder cavity to “close” and vice versa, while part of the liquid is added or withdrawn through the fitting 32 from the expansion tank (not shown).

If necessary, for example, to open the valve with the drive in manual mode, the handle 11 is rotated together with the spindle 10, the rotary valve 33 to the "open" position.

With this position of the handle 11, a movable self-aligning sleeve with a sealing seat 35 (see Fig. 5) connected by channels to the suction valves 21 is connected to the fitting 37 connected to the cylinder cavity of the pneumatic actuator for closing (not shown)

A movable self-aligning sleeve with a sealing seat 38, connected by channels with pressure valves 22, is connected to a fitting 39 connected to the cylinder cavity of the pneumatic actuator for opening (not shown).

While the sleeve with the sealing seat 35, 38 and 40 of the elastic elements 41 are tightly pressed against the spherical surface of the rotary valve 33, covering the channels in the rotary valve 33 and sealing them securely.

When performing rocking movements up and down of the lever 18 (see Fig. 1), made in the form of a rocker arm, which rests on the cover 5 with the middle part and is connected to it via the axis 19, the pistons 15 move in the bushings 16.

The bushings 16 are sealed relative to the cylinders 4 and pistons 15 by rubber rings 17, therefore, in the cavity of the cylinders 4 alternately creates an excess pressure of the working hydraulic medium or vacuum.

When the piston 15 moves upward, fluid under pressure flows through the channels and enters the discharge valve 22 (see Fig. 6), in the discharge valve 22 the working fluid presses the ball 24 from the seat 26, compressing the spring 25, and enters the channel of the self-aligning sleeve with a sealing saddle 38 (see Fig. 5), coupled to the channel in the rotary valve 33.

Through the spool 33, the working fluid enters the nozzle 39 connected to the cavity of the cylinder 4 of the pneumatic actuator for opening, the actuator piston moves, the ball valve opens. In this case, the ball 24 in the suction valve 21 (see Fig. 6) is pressed tightly against the seat 26 under the pressure of the fluid and the spring 25, blocking the passage of fluid into the cylinder “to close” and into the fitting 32 connected to the expansion tank. When the piston 15 moves downward, the liquid under the action of the resulting vacuum through the channel associated with the suction valve 21, squeezes the ball 24 from the seat 26, compressing the spring 25, and opens the passage for further flow of the working fluid through the channel of the self-aligning sleeve with the sealing seat 35 (see Fig. .5), coupled with the channel in the rotary valve 33, the fitting 37 and from the cylinder cavity of the pneumatic actuator to close, as well as from the expansion tank through the fitting 32. In this case, the ball 24 in the discharge valve 22 is tightly pressed against the seat 26, p Blocking the passage of fluid from the cavity of the drive cylinder to open.

If necessary, for example, to close the valve with the actuator in manual mode, the handle 11 is rotated together with the spindle 10, the rotary valve 33 to the "closed" position (see Fig. 4), in which the movable self-aligning sleeve with the sealing seat 35 is connected with the fitting 39 and with a cylinder cavity of the pneumatic actuator for opening and through the fitting 32 with an expansion tank, and a movable self-aligning sleeve with a sealing seat 38 with a fitting 37 and with a cylinder cavity of the pneumatic actuator for closing. The operation of the pump valves is similar to that described above when the valve is opened by the actuator in manual mode.

The use of a manual hydraulic pump gives a number of advantages during operation in comparison with analogues:

- simplification of the design is achieved by the fact that in the manual hydraulic pump the control valve, the housing with suction and discharge valves, the cylinders with pistons are made as separate units connected to each other by fasteners, which simplifies the manufacture of the housing and the control valve and provides easy access to the ball valve seats, as well as discharge and suction valves. Both pistons of the pump are controlled by one lever;

- increased productivity is achieved by the fact that the manual hydraulic pump contains two cylinders with pistons, the pistons are interconnected by a lever made in the form of a rocker arm, due to which the hydraulic fluid is pumped both when the lever moves up and when the lever moves down;

- increased productivity is also achieved by reliable sealing of the channels in the valve spool, which is made in the form of a ball plug and spherical surface interacts with movable self-aligning bushings with sealing seats. Two cylinders with pistons allow you to create a continuous movement of hydraulic fluid through pipelines, which reduces the hydraulic resistance in them and increases the efficiency of the pump;

- increased reliability is achieved due to the fact that the control valve contains a rotary valve, made in the form of a ball plug, with a spherical surface, the valve interacts with movable self-aligning bushings with sealing seats located in channels connected to suction and discharge valves and fittings connected to the cylinder cavities of the pneumatic drive to open and close the ball valve. The sealing seats of the rotary valve are made of polymer material, which provides reliable isolation of the discharge line from the suction line in the pump at any of the three positions of the valve: "Opening", "Closing", "Automatic";

- maintainability is achieved by the fact that in the pump is a manual hydraulic control valve, a housing with suction and discharge valves, cylinders with plungers are made as separate units connected to each other by fasteners. With this design, free access to the discharge and suction valves, as well as to the sealing seats of the spool, is provided. The valve seats and the sealing seats of the ball valve are removable, thanks to which they can be easily dismantled for washing, repair or replaced with new ones. The seats of the discharge and suction valves are made in the form of a washer and have two working surfaces on each side. In the event that a seat develops on the sealing surface of the saddle or is damaged, the saddle can be deployed on the reverse side and reinserted into the pump casing, in which case a backup sealing surface will be used;

- improving ease of use due to the fact that the manual hydraulic pump contains two cylinders with pistons, which allows to reduce the effort on the lever compared to the prototype by reducing the diameters of each of the two pistons while maintaining the performance of a single-piston pump. Rotating the valve spool interacting with polymer sealing seats requires little effort.

A manual hydraulic pump can be used to change the direction of fluid flow and pump the required volume of hydraulic fluid when controlling the hydraulic drive of a ball valve at gas, oil, and chemical industry facilities.

The use of the pump improves the safety of the pipeline process by increasing the speed of the hand pump in an emergency by increasing the productivity and continuity of the pressure of the hydraulic fluid in the pipeline.

Claims (1)

A manual hydraulic pump for emergency control of a ball valve actuator, comprising a housing, a piston mechanism equipped with a manual actuator, and a housing ogolovnik in which a spool valve with channels connected to the housing is located, a suction and discharge valves, in the form of a spring ball connected to the seat, wherein the ogolovnik is closed by a cover through which a spindle with a handle is passed, movable self-aligning bushings with sealing seats, characterized in that the piston mechanism filled with a two-cylinder, the pistons of which are interconnected by a lever made in the form of a rocker arm, and the cylinders are connected by channels with the indicated suction and discharge valves located in the housing, while the outlet of the first suction valve and the entrance to the first discharge valve are connected to the first cylinder by the outlet from the second suction valve and the inlet to the second discharge valve, the channels are connected to the second cylinder, and the inlets to both suction valves are connected to each other and to the valve, moreover, the outlets from both pressure valves are connected to each other and to the hydraulic distributor by a corresponding channel, while the seats of all pump valves are made in the form of washers with o-rings on the outer surface and have a working surface configured to interact with the ball from each end of the seat with the possibility of turning the saddle in case of damage to one side of its working surface before contact with the ball by the other side of the working surface of the saddle, the spool valve is made in the form of a ball a new plug, the spherical surface of which is interfaced with movable self-aligning bushings with sealing seats located in channels associated with suction and discharge valves and with fitting channels connected to the cylinder cavities of the pneumatic-hydraulic drive for opening and closing the ball valve.

Images