CN110848204A - Constant pressure difference booster tank for magnetic reactor system - Google Patents

Abstract

The magnetic reaction kettle system of the present invention uses a constant pressure differential pressure booster tank, which includes a piston cylinder, a pressure-inducing hole communicated with the inner chamber of the reaction kettle is opened in the front cavity of the piston, and an isolation sleeve with the reaction kettle is opened in the rear cavity of the piston The main feature of the through-flow hole connecting the inner cavity and the inner cavity of the mechanical seal is that a cover cylinder (4) is sealed and fixedly connected to the upper end cover of the cylinder body, and a slider (5) is fixedly connected to the upper end of the piston rod. The slider is provided with a conduction hole (51) that conducts the lower chamber (C) of the slider and the upper chamber (D) of the slider, and a thrust spring (6) is arranged on the piston rod between the slider and the upper end cover of the cylinder. , a through-pressure hole (15) between the piston rear chamber (B) and the slider lower chamber (C) is opened on the upper end cover of the cylinder body. The upper and lower ends of the piston are equal to the pressure generated by the pressure in the reactor, and the pressure of the spring makes the pressure in the rear chamber of the piston higher than the pressure in the front chamber of the piston, and the pressure difference is unchanged.

Description

Constant pressure difference booster tank for magnetic reactor system

technical field

The invention relates to a constant-pressure-difference booster tank used in a magnetic reactor system.

Background technique

The booster tank used in the magnetic reactor system is a piston-cylinder device. The pressure in the reactor is introduced into the front cavity of the piston. Since the end face of the front cavity of the piston is larger than the end face of the rear cavity of the piston, the pressure in the reactor is introduced into the front cavity of the piston to act on the piston to make The pressure in the rear cavity of the piston is stronger than the pressure in the front cavity of the piston (in the reactor), that is, the pressure in the rear cavity of the piston increases, and a through hole is opened on the rear cavity of the piston to connect to the inner cavity of the isolation sleeve of the magnetic reactor and the mechanical seal. In the outer cavity, the pressure in the inner cavity of the isolation sleeve of the magnetic reaction kettle and the pressure in the outer cavity of the mechanical seal are higher than the pressure in the kettle cavity, so that the medium in the reaction kettle cavity cannot leak into the inner cavity of the isolation sleeve, and the inner cavity of the isolation sleeve is protected. The internal magnetic rotor and bearing, while ensuring that the mechanical seal operates under positive pressure.

The booster tank used in this magnetic reactor system has a constant booster ratio, and the generally designed booster ratio is: 1:1.1, that is, if the input pressure of the booster tank is 1MPa, and the side output pressure is 1.1MPa.

During the working process of some magnetic reaction kettles, the pressure in the chamber of the magnetic reaction kettle is constant, and in the production process of some magnetic reaction kettles, the pressure changes with the progress of the reaction in the kettle, regardless of whether the pressure in the chamber of the reaction kettle is constant or changing. However, when the pressurized tank of the prior art is used under the conditions of low pressure and high pressure, it will cause the phenomenon that the pressurization is too low or the pressurization is too high. For example, in the initial stage of the reaction kettle, the pressure in the kettle is very low, close to normal pressure (the gauge pressure is zero), or even negative pressure. As the reaction progresses, the pressure in the reaction kettle gradually increases, and some magnetic The pressure in the reactor chamber reached ten megapascals. This kind of magnetic reaction kettle with a large pressure change, when the above-mentioned technology pressurized tank is used, in the initial stage of the reaction, the pressure in the reaction kettle is zero, and the supercharged tank cannot achieve the effect of pressurization, resulting in the pressure in the inner cavity of the isolation sleeve being too low. The medium in the kettle cavity may leak back into the inner cavity of the isolation sleeve (inner rotor cavity), which will cause the bearing to be corroded and damaged. With the development of the reaction, when the pressure in the magnetic reaction kettle cavity reaches ten MPa, the pressure after the booster tank is more than 1 MPa higher than the pressure in the kettle cavity, and the pressure in the inner cavity of the isolation sleeve (inner rotor cavity) is more than 1 MPa. If it is too high, the isolation sleeve is easily damaged due to high pressure, and the shaft mechanical seal is subjected to high pressure difference, resulting in aggravated wear on the end face of the shaft mechanical seal, increased leakage and reduced service life. At the same time, due to the large pressure difference between the kettle cavity and the inner rotor cavity, the axial force generated by the main shaft is large, resulting in excessive load of the bearing and reduced service life.

SUMMARY OF THE INVENTION

The purpose of the present invention is to improve the above-mentioned deficiencies of the prior art, and to provide a constant pressure differential pressure booster tank for a magnetic reaction kettle system, which is suitable for a magnetic reaction kettle with a large pressure change.

The constant pressure difference booster tank for the magnetic reaction kettle system of the present invention includes a piston cylinder composed of a cylinder block, a piston and a piston rod, and a pressure-inducing hole connected to the inner cavity of the magnetic reaction kettle is opened on the front (lower) cavity of the piston. , the rear (upper) cavity of the piston is provided with a through-flow hole communicating with the inner cavity of the isolation sleeve of the magnetic reaction kettle and the rear (inner) cavity of the mechanical seal, which is characterized by:

The upper end cover 11 of the cylinder body is sealed and fixedly connected with a cover cylinder, the upper end of the piston rod protrudes into the cover cylinder through the upper end cover of the cylinder body, and a slider is fixedly connected to the upper end of the piston rod, and the slider is slidably matched with the inner wall of the cover cylinder. The slider is provided with a conduction hole that conducts the lower cavity of the slider and the upper cavity of the slider, a thrust spring is arranged on the piston rod between the slider and the upper end cover of the cylinder, and a conduction hole is opened on the upper end cover of the cylinder The through-pressure hole between the rear (upper) cavity of the piston and the lower cavity of the slider.

The pressurization principle and working process of the invention: the pressure in the magnetic reaction kettle enters the piston front cavity of the piston cylinder, the piston moves upwards under the action of the pressure in the piston front cavity, and the pressure in the piston front cavity passes through the opening on the upper end cover of the cylinder. The through-pressure hole is introduced into the lower chamber of the slider in the cover cylinder, and then into the upper chamber of the slider through the through hole on the slider. Through the action of the piston, the pressure in the magnetic reaction kettle is transmitted to the upper end of the piston with equal intensity, so that the piston cylinder The pressure of the front piston cavity, the rear cavity of the piston, the upper and lower chambers of the slider of the cover cylinder are equal, so that the upper and lower ends of the piston are equal to the pressure generated by the pressure in the magnetic reaction kettle; The pressure action makes the pressure in the rear cavity of the piston and the upper cavity of the cover cylinder and the lower cavity of the slider higher than the pressure in the front cavity of the piston cylinder. It is determined that it does not change with the change of the pressure in the kettle cavity. When the preload force of the thrust spring on the piston rod is set, the increase of the pressure in the rear cavity of the piston relative to the front cavity of the piston is determined and unchanged, that is, regardless of the magnetic force The pressure difference between the rear chamber of the piston cylinder and the front chamber of the piston cylinder remains unchanged regardless of the pressure in the reactor. Therefore, the pressure in the inner cavity of the isolation sleeve and the mechanical sealing cavity and the pressure in the magnetic reaction kettle can keep the boosting value constant, thereby overcoming the shortcomings of the prior art.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

Figure 2 is a schematic diagram of the use state of the present invention.

Detailed ways

The constant pressure difference booster tank for the magnetic reaction kettle system of the present invention includes a piston cylinder composed of a cylinder block 1, a piston 2 and a piston rod 3, and a pressure-inducing pressure connected to the inner chamber of the magnetic reaction kettle is opened on the front cavity A of the piston. The hole 13, in the rear cavity B of the piston, is provided with a through-flow hole 14 that communicates with the inner cavity of the isolation sleeve and the inner cavity of the mechanical seal of the magnetic reaction kettle, and is characterized by:

The upper end cover 11 of the cylinder body 1 is sealed and fixedly connected with a cover cylinder 4 , the upper end of the piston rod 3 protrudes into the cover cylinder 4 through the upper end cover 11 of the cylinder body, and a slider 5 is fixedly connected to the upper end of the piston rod 3 . The sliding block 5 is slidingly matched with the inner wall of the cover cylinder 4, and a conducting hole 51 is opened on the sliding block 5 to conduct the lower cavity C of the sliding block and the upper cavity D of the sliding block, between the sliding block 5 and the upper end cover 11 of the cylinder block A thrust spring 6 is set on the piston rod 2 of the cylinder body, and a through-pressure hole 15 is opened on the upper end cover 11 of the cylinder to conduct the rear cavity B of the piston and the lower cavity C of the slider.

As shown in the embodiments of the drawings, the piston-cylinder-cylinder body 1 is composed of a cylinder barrel 10, an upper end cover 11, and a lower end cover 12. The upper end cover 11 is matched with the mouth of the cylinder barrel 10, and an upper end sealing ring is provided on the fitting surface of the mouth-stop. 10a, the lower end cover 12 is matched with the spigot of the cylinder barrel 10, and a lower end sealing ring 10b is provided on the fitting surface of the spigot.

The cover cylinder 4 is provided with a lower end flange 41, and the flange 41 at the lower end of the cover cylinder 4 is matched with the upper end cover 11 of the cylinder body. The upper end cover 11 , the cylinder barrel 10 , the lower end cover 12 and the lower end flange 41 of the cover barrel are connected to each other by bolts 7 in series axially pressed and fixed to each other.

The pressure-inducing hole 13 is formed in the lower end cover 12 of the piston-cylinder cylinder.

The above-mentioned through-flow holes 14 are opened in the upper end cover 11 of the piston-cylinder block.

A liquid replenishing hole 16 is opened in the upper end cover 11 of the piston-cylinder cylinder.

A wire plug exhaust hole 43 is opened on the upper top cover 42 of the cover cylinder 4; when it is used for the first time, the wire plug exhaust hole 43 needs to be opened to exhaust.

A magnetic ring seat 8 is fixedly connected to the upper end of the slider 5 at the upper end of the piston rod, and a magnetic ring block 81 is fixedly installed on the magnetic ring seat 8; Slip fit with clearance;

A magnetic flap display 9 is fixedly installed on the upper outer wall of the cover cylinder 4 . The magnetic flap display 9 cooperates with the magnetic ring 81 described in the cover cylinder 4 to display the position of the piston rod and determine whether the spacer liquid should be replenished. When the spacer fluid is lost to a certain extent, the external (manual) fluid replenishment pump will replenish the fluid through the fluid replenishment hole 16 in time.

Claims (2)

1. The constant pressure difference booster tank for the magnetic reaction kettle system includes a piston cylinder composed of a cylinder block (1), a piston (2), and a piston rod (3). The front cavity (A) of the piston is provided with a magnetic reaction The pressure-inducing hole (13) that communicates with the inner cavity of the kettle is provided with a through-flow hole (14) in communication with the inner cavity of the isolation sleeve and the inner cavity of the mechanical seal of the magnetic reaction kettle in the rear cavity (B) of the piston, and is characterized by: A cover cylinder (4) is sealed and fixedly connected to the upper end cover (11) of the cylinder body (1), and the upper end of the piston rod (3) extends through the upper end cover (11) of the cylinder body into the cover cylinder (4), The upper end of the piston rod (3) is fixedly connected with a sliding block (5), the sliding block (5) is slidably matched with the inner wall of the cover cylinder (4), and a lower cavity (C) for conducting the sliding block is opened on the sliding block (5). and the through hole (51) of the upper cavity (D) of the slider, a thrust spring (6) is arranged on the piston rod (2) between the slider (5) and the upper end cover (11) of the cylinder, and a thrust spring (6) is arranged on the upper end of the cylinder. The cover (11) is provided with a through-pressure hole (15) that conducts the rear chamber (B) of the piston and the lower chamber (C) of the slider. 2. magnetic reactor system according to claim 1 is characterized in that: The piston cylinder block (1) is composed of a cylinder barrel (10), an upper end cover (11), and a lower end cover (12). An upper end sealing ring (10a) is provided, the lower end cover (12) is matched with the spigot of the cylinder barrel (10), and a lower end sealing ring (10b) is arranged on the fitting surface of the spigot; The cover cylinder (4) is provided with a lower end flange (41), the lower end flange (41) of the cover cylinder (4) is matched with the stop of the upper end cover (11) of the cylinder body, and a flange is provided on the fitting surface of the stop The sealing ring (4a); the upper end cover (11), the cylinder barrel (10), the lower end cover (12) and the lower end flange (41) of the cover barrel are axially pressed against each other in series through the bolts (7). Tightly fixed connection; The pressure-inducing hole (13) is provided in the lower end cover (12) of the piston-cylinder body; The through-flow hole (14) is provided in the upper end cover (11) of the piston-cylinder block; A liquid replenishing hole (16) is provided on the upper end cover (11) of the piston-cylinder body; A wire plug exhaust hole (43) is provided on the upper top cover (42) of the cover cylinder (4); A magnetic ring seat (8) is fixedly connected to the upper end of the slider (5), and a magnetic ring (81) is fixedly installed on the magnetic ring seat (8); the magnetic ring seat (8) and the magnetic ring (81) ) is in clearance sliding fit with the inner wall of the cover cylinder (4); A magnetic flap display (9) is fixedly installed on the upper outer wall of the cover cylinder (4), and the magnetic flap display (9) cooperates with the magnetic ring (81) described in the cover cylinder (4) to display the piston rod position.

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