RU1800143C - Pressure booster - Google Patents

Abstract

The invention may used in devices for generating high hydrostatic pressure of a liquid. The purpose of the invention is to increase reliability at ultrahigh pressures. The pressure multiplier contains a plunger (P) 1 with an axial channel (OK) 2 installed in the cylinder 3 to form a high-pressure cavity (LDPE), a piston rigidly connected to P 1 and installed in the low-pressure cylinder with the formation of two cavities, a spring-loaded check valve (POK) 9, installed at the entrance to OK 2 P 1 from the LDPE. POK 9 is made with a flat locking element formed by the ends of bushes (B) 10 and 11 concentrically mounted relative to the OPK 9, made of materials with different stiffness, and internal B 10 is made of two sequentially installed elements (E) 12 and 13, while the stiffness E 13 internal B 10 interacting with the seat 14 POK 9, more stiffness of the other bushings. E 13 internal B 10 mb made of solid, capable of plastic deformation of non-metal, such as polyamide. 2 ill. (L C

Description

The invention relates to hydraulic engineering, in particular to devices for generating high hydrostatic pressure of a liquid.

The purpose of the invention is to increase reliability at ultrahigh pressures.

In FIG. 1 shows a pressure multiplier, axial section; in FIG. 2 - sealing assembly of the non-return valve.

The pressure multiplier comprises a plunger 1 with an axial channel 2 mounted in the cylinder to form a high-pressure cavity 4, a piston 5, rigidly connected to the plunger 1 and installed in a low-pressure cylinder 6 to form two cavities 7 and 8, a spring-loaded check valve 9 mounted on the entrance to the axial channel 2 of the plunger 1 from the side of the high-pressure cavity 4. The check valve 9 is made with a flat locking element formed by the ends of bushes 10 and 11, concentrically mounted relative to the valve 9, made of mater ialov with different stiffnesses, and the inner sleeve 10 is made of two sequentially installed elements 12 and 13, while the stiffness of the element 13 of the inner sleeve 10, interacting with the seat 14 of the valve 9 is greater than the stiffness of the other bushings. The element 13 of the inner sleeve 10 can be made of solid, capable of plastic deformation of non-metal, for example, polyamide.

The pressure multiplier operates as follows.

In the initial position of the piston 5, the check valve 9 is opened by squeezing the bottom of the piston cavity 7. Compressed air is supplied to the supra-piston cavity 8 to hold the piston 5 in the initial position, then low pressure fluid is supplied to the piston cavity 7 from the source (not shown) which, having filled the sub-piston cavity 7, through the axial channel 2 of the plunger 1 through the check valve 9 enters the high-pressure cavity 4. After the high-pressure cavity 4 is completely filled with liquid, the compressed air from the supra-piston cavity and 8 is bled. Due to the lack of pressure holding the piston 5 in the supra-piston cavity 8, a low-pressure fluid begins to act on the piston 5, moving it and the associated plunger 1, as a result of which the bottom pressing of the under-piston cavity 7 of the check valve 9, which the spring starts to act on, stops. leading to closing

check valve 9 and the contact of the bushings 10 and 11 with the seat 14,

With further movement of the piston 5 and plunger 1 in the high-pressure cavity 4

there is an increase in fluid pressure, which, acting on the seal assembly, presses the inner sleeve 10 against the seat 14, provides the initial seal of the check valve 9 and prevents extrusion of the outer sleeve 11 into the gap between the check valve 9 and the plunger 1 in the initial stage of pressure generation and pressing the outer sleeve 11 simultaneously to two

elements 12 and 13 of the inner sleeve 10 and to the seat 14, thereby achieving the final seal of the check valve 9.

After completion of the work, the supraperitoneal cavity 8 is supplied under pressure

compressed air while bleeding the working fluid from the sub-piston cavity 7, while the piston 5 and the associated plunger 1 return to their original position, and the cycle of work is repeated.

The use of a check valve pressure multiplier with a sealing assembly in the form of a two-row set of sealing sleeves of different stiffness makes it possible to increase the reliability of the check valve, which is achieved by overlapping sleeves, which allow reliable sealing of the axial channel of the plunger, and therefore

increase the efficiency of the multiplier.

Claims (2)

Formula 1, A pressure multiplier comprising an axial channel plunger mounted in a cylinder to form a high pressure cavity, a piston rigidly connected to the plunger and mounted in a low pressure cylinder to form two cavities, spring-loaded reverse a valve installed at the inlet to the axial channel of the plunger from the side of the high-pressure cavity, characterized in that, in order to increase reliability in operation at ultrahigh pressures, the reverse the valve is made with a flat locking element formed by the ends of bushings concentrically mounted relative to the valve, made of materials with different stiffness, and the inner sleeve made of two sequentially installed elements, while the stiffness of the inner sleeve interacting with the saddle is greater than the stiffness of the other bushings. 2. The multiplier according to claim 1, with the exception that the inner sleeve interacting with the seat is made of solid, capable of plastic deformation of non-metal, such as polyamide.