CN217519237U - Self-sealing leakage-proof high-temperature high-pressure stop valve - Google Patents

Abstract

The utility model discloses a high temperature high pressure stop valve is prevented leaking by self sealss, this stop valve include valve body, lower valve rod, case seat, valve frame, valve-stem nut, handle, go up valve rod, high-pressure bolt, high-pressure nut, characterized by: the outer wall installation self sealss at the valve core seat prevent leaking the mechanism, the mechanism is prevented leaking including sealing ring, four rings, the interior lantern ring and tightly mother to the self sealss, the afterbody outer wall of valve core seat is equipped with 30 inclined planes, the sealing ring inner wall be equipped with valve core seat complex 30 inclined planes, the sealing ring suit is on the afterbody outer wall of valve core seat, the installation four rings are closed on the sealing ring, the lantern ring in four ring inner wall installations, by tightly mother and tightly valve core seat and the interior lantern ring for four rings are closed and can't move. The utility model discloses a self sealss pattern, it is better to seal under the higher condition of pressure, the performance is good, and factor of safety is high, life cycle length, whole pleasing to the eye.

Description

Self-sealing leakage-proof high-temperature high-pressure stop valve

Technical Field

The utility model relates to a valve, concretely relates to high temperature high pressure stop valve is prevented leaking by self sealss.

Background

The valve is an indispensable equipment device on the production pipelines of enterprises such as petroleum, chemical engineering, chemical fertilizer, nuclear power, medicine, food and the like, and the high-temperature high-pressure stop valve is a key valve for preventing the medium from leaking and cutting off the medium on the pipelines of the enterprises. The service performance of the product is as follows: the safety, stability, reliability and sealing performance directly affect the safety, production yield and economic benefit of the whole production process of an enterprise. Especially, under the severe working condition of high temperature and high pressure, higher requirements are provided for the sealing performance, the safety coefficient, the temperature resistance, the pressure resistance and the service cycle of the high-temperature and high-pressure stop valve.

At present, the high-temperature and high-pressure stop valves produced in China generally adopt JB/T450 mechanical part standards and HG/T3156 industrial standards, as shown in figure 1, the structural forms are basically consistent, the valve body and the valve cover are fastened through bolts and nuts to play a sealing role, and medium leakage often occurs due to the effects of vibration of the flow rate of pipeline media, high-temperature thermal expansion and pressure during work, so that hidden troubles are brought to production, and normal production is influenced.

Disclosure of Invention

The utility model aims to provide a: the utility model provides a high temperature high pressure stop valve is prevented leaking by self sealss, this valve adopt the self sealss type, it is better to seal under the higher condition of pressure, and the performance is good, and factor of safety is high, life cycle length, and is whole pleasing to the eye.

The technical solution of the utility model is that: the stop valve comprises a valve body, a lower valve rod, a valve core seat, a filler, a pressing nut, a valve frame, a valve rod nut, a handle, a nut, a gasket, a check bolt, an upper valve rod, a clamping ring, a retaining ring, a clamping sleeve, a high-pressure bolt and a high-pressure nut, wherein flanges are respectively arranged on an inlet and an outlet of the valve body; the method is characterized in that: the self-sealing leakage-preventing mechanism is installed on the outer wall of the valve core seat and comprises a sealing ring, a four-ring, an inner sleeve ring and a tightening nut, a 30-degree inclined plane is arranged on the outer wall of the tail portion of the valve core seat, a 30-degree inclined plane matched with the valve core seat is arranged on the inner wall of the sealing ring, the sealing ring is sleeved on the outer wall of the tail portion of the valve core seat, the four-ring is installed on the sealing ring, the inner sleeve ring is installed on the inner wall of the four-ring, and the valve core seat and the inner sleeve ring are tightly pressed by the tightening nut, so that the four-ring cannot move.

The utility model has the advantages that: 1. in the use process, the higher the pressure is, the better the sealing effect is; 2. the valve rod is flexibly and smoothly opened and closed, the valve frame has no load force, the problem that the valve body and the valve frame are easy to leak is thoroughly solved, and the safety stability and the economic benefit of a production enterprise are ensured; 3. the valve frame, the valve core seat and the valve body of the original stop valve are clamped through bolts and nuts, the stop valve of the utility model is changed into self-sealing, the original bidirectional force of the valve frame is changed into unidirectional force, the clamping force between the valve body and the valve frame and the pulling force of the bolts are reduced, and the medium is prevented from leaking; 4. the four-ring sealing device is characterized in that a four-ring is installed on the sealing ring, an inner lantern ring is installed on the inner wall of the four-ring, and the valve core seat and the inner lantern ring are tightly fastened by a fastening nut, so that the four-ring sealing device cannot be moved, and the stability of the four-ring sealing device is guaranteed.

Drawings

FIG. 1 is a schematic structural diagram of an original high-temperature and high-pressure stop valve in JB/T450 mechanical department standard and HG/T3156 industry standard;

FIG. 2 is a schematic view of the present invention;

in the figure: 1 flange, 2 valve bodies, 3 lower valve rods, 4 valve core seats, 5 sealing rings, 6 four-way rings, 7 inner lantern rings, 8 tightening nuts, 9 packing, 10 tightening nuts, 11 compression nuts, 12 valve frames, 13 valve rod nuts, 14 handles, 15 nuts, 16 gaskets, 17 stopping bolts, 18 upper valve rods, 19 clamping rings, 20 check rings, 21 clamping sleeves, 22 high-pressure bolts and 23 high-pressure nuts.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

As shown in figure 2, the stop valve comprises a valve body 2, a lower valve rod 3, a valve core seat 4, a packing 9, a gland nut 10, a gland nut 11, a valve frame 12, a valve rod nut 13, a handle 14, a nut 15, a gasket 16, a backstop bolt 17, an upper valve rod 18, a clamping ring 19, a check ring 20, a clamping sleeve 21, a high-pressure bolt 22 and a high-pressure nut 23, wherein flanges 1 are respectively arranged on an inlet and an outlet of the valve body 2, the valve frame 12 is arranged on the valve body 2 through the high-pressure bolt 22 and the high-pressure nut 23, the valve core seat 4 is arranged in a valve cavity of the valve body 2, the upper valve rod 18 and the lower valve rod 3 are connected into a whole through the clamping ring 19, the check ring 20 and the clamping sleeve 21 and are inserted into the valve frame 12 and the valve body 2, the upper valve rod 18 is arranged on the valve frame 12 through the valve rod nut 13 and the backstop bolt 17, the handle 14 is arranged at the top end of the upper valve rod 18 through the nut 15 and the gasket 16, a gap between the inner wall of the valve core seat 4 and the lower valve rod 3 is communicated through the gland nut 10, The packing 9 is installed on the compression nut 11; the method is characterized in that: the outer wall installation self sealss at valve core case 4 prevents leaking the mechanism, the mechanism is prevented leaking including sealing ring 5, four closed rings 6, the interior lantern ring 7 and tightly mother 8 to the self sealss, the afterbody outer wall of valve core case 4 is equipped with 30 inclined planes, the sealing ring 5 inner wall be equipped with valve core case 4 complex 30 inclined planes, sealing ring 5 suit is on the afterbody outer wall of valve core case 4, the four closed rings 6 of installation on sealing ring 5, the lantern ring 7 in the 6 inner wall installations of four closed rings, by tightly mother 8 and tightly valve core case 4 and interior lantern ring 7 for four closed rings 6 have not moved.

Claims (1)

1. The self-sealing leakage-proof high-temperature high-pressure stop valve comprises a valve body (2), a lower valve rod (3), a valve core seat (4), a packing (9), a gland nut (10), a gland nut (11), a valve frame (12), a valve rod nut (13), a handle (14), a nut (15), a gasket (16), a check bolt (17), an upper valve rod (18), a retainer ring (19), a retainer ring (20), a clamping sleeve (21), a high-pressure bolt (22) and a high-pressure nut (23), wherein flanges (1) are respectively arranged on an inlet and an outlet of the valve body (2), the valve frame (12) is arranged on the valve body (2) through the high-pressure bolt (22) and the high-pressure nut (23), the valve core seat (4) is arranged in a valve cavity of the valve body (2), the upper valve rod (18) and the lower valve rod (3) are connected into a whole through the retainer ring (19), the retainer ring (20) and the clamping sleeve (21) and are inserted into the valve frame (12) and the valve body (2), an upper valve rod (18) is arranged on a valve frame (12) through a valve rod nut (13) and a backstop bolt (17), the top end of the upper valve rod (18) is provided with a handle (14) through a nut (15) and a gasket (16), and a packing (9) is arranged in a gap between the inner wall of a valve core seat (4) and a lower valve rod (3) through a compression nut (10) and a compression nut (11); the method is characterized in that: the self-sealing leakage-preventing mechanism is installed on the outer wall of the valve core seat (4) and comprises a sealing ring (5), a four-ring closing (6), an inner ring (7) and a tightening nut (8), the outer wall of the tail part of the valve core seat (4) is provided with a 30-degree inclined plane, the inner wall of the sealing ring (5) is provided with a 30-degree inclined plane matched with the valve core seat (4), the sealing ring (5) is sleeved on the outer wall of the tail part of the valve core seat (4), the four-ring closing (6) is installed on the sealing ring (5), the inner ring (7) is installed on the inner wall of the four-ring closing (6), and the tightening nut (8) tightly closes the valve core seat (4) and the inner ring (7), so that the four-ring closing (6) cannot be moved.

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