CN216715243U - High-pressure-difference multistage pressure-reduction angle-type regulating valve for high-pressure hydrogenation device - Google Patents
High-pressure-difference multistage pressure-reduction angle-type regulating valve for high-pressure hydrogenation device Download PDFInfo
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- CN216715243U CN216715243U CN202123343828.1U CN202123343828U CN216715243U CN 216715243 U CN216715243 U CN 216715243U CN 202123343828 U CN202123343828 U CN 202123343828U CN 216715243 U CN216715243 U CN 216715243U
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Abstract
The utility model relates to a high-pressure-difference multistage depressurization angle type regulating valve for a high-pressure hydrogenation device, which comprises a valve body, wherein a valve core and a valve rod are integrated, and an upper cover is arranged on the valve body; is characterized in that: a plurality of throttling orifices are axially distributed in the valve seat, the throttling orifices at the upper end of the valve seat are provided with first sealing surfaces, a plurality of throttling weir notches are axially distributed outside the valve core, and the throttling weir notches at the upper end of the valve core are provided with second sealing surfaces; the first sealing surface and the second sealing surface form a sealing pair. And an axial balance hole is formed in the center of the valve core, and the axial balance hole and the radial balance hole are penetrated and intersected. The utility model is suitable for the gas-liquid two-phase or gas precipitation working condition of the hydrogenation device; the flash evaporation position can be far away from the sealing surface, and the sealing surface of the valve core is protected; the cleaning agent has a self-cleaning function and is suitable for unclean media; the valve core semi-balance structure is suitable for high pressure difference working conditions, improves the adjusting precision, reduces the thrust of the actuating mechanism and can reduce the cost.
Description
Technical Field
The utility model relates to an angle-type regulating valve, in particular to a high-pressure-difference multi-stage pressure-reduction angle-type regulating valve for a high-pressure hydrogenation device.
Background
High-pressure hydrogenation, including residual oil hydrogenation, hydrocracking and the like, is one of important technologies for deep processing of heavy oil, and is a process for converting heavy oil into various oil products such as gasoline, kerosene, diesel oil, lubricating oil and the like under the conditions of high pressure, hydrogen and a catalyst. The operation condition of the key control valve in the hydrogenation device is very harsh, and particularly, the liquid level control valve of cold and hot high-pressure oil is most representative. When the high oil separation medium flows through the control valve, the phenomena of flash evaporation and cavitation of the valve are easily caused due to the throttling effect of the valve core; and the medium contains solid catalyst particles, so that the valve internals are eroded and abraded, and the service life of the product is seriously influenced. The gas carried in the medium can cause the volume to change rapidly along with the change of the pressure before and after the valve, and further causes the control valve and the pipeline to vibrate. Because the medium contains components such as H2S and the like, the phenomena of stress corrosion cracking, sulfide stress cracking and the like of the valve can be caused, and the safe operation of the device is seriously influenced. In addition, the closing differential pressure of the control valve is high, and the sealing grade is V grade. Because the valve is harsh, the station regulating valve is basically monopolized by imported brands.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, provides a high-pressure-difference multistage depressurization angle type regulating valve suitable for a high-pressure hydrogenation device, and is particularly suitable for the working condition of a gas-liquid two-phase or gas-separated non-clean medium; the adjusting precision can be improved, and the thrust of the actuating mechanism is reduced; the stability of adjustment is ensured, and the valve core is prevented from deflecting due to medium acting force, so that the valve core is prevented from being worn laterally.
According to the technical scheme provided by the utility model, the high-pressure-difference multistage depressurization angle type regulating valve for the high-pressure hydrogenation device comprises a valve body, a guide seat, a valve core, a valve rod and an upper cover, wherein the guide seat is arranged in the valve body; the valve core is connected with the valve rod, the valve core, the valve seat and the pressing sleeve are sequentially arranged on the guide seat, and the valve rod penetrates through the upper cover; the upper cover is arranged on the valve body, and the guide seat, the valve seat and the pressing sleeve are tightly pressed in the valve body by using a nut and a stud; is characterized in that: a plurality of throttling orifices are axially distributed in the valve seat, the throttling orifices at the upper end of the valve seat are provided with first sealing surfaces, a plurality of throttling weir notches are axially distributed outside the valve core, and the throttling weir notches at the upper end of the valve core are provided with second sealing surfaces; the first sealing surface and the second sealing surface form a sealing pair; and the rest throttling orifices of the valve seat correspond to the throttling weir crest of the valve core one by one, and a gap is formed between each throttling orifice and each throttling weir crest. An axial balance hole is formed in the center of the valve core, the axial balance hole and the radial balance hole are intersected in a penetrating mode, and an outlet of the radial balance hole is formed below a second sealing surface of the valve core.
As a further improvement of the utility model, the throttling orifice is enlarged step by step from top to bottom; and the throttling weir crest is amplified step by step from top to bottom.
As a further improvement of the present invention, the gap between the throttling orifice and the throttling weir is: 0.5-2.5 mm.
As a further improvement of the utility model, the inlet and the outlet of the valve body form a 90-degree right angle, the side part of the valve body is provided with the inlet, the bottom of the valve body is provided with the outlet, and the diameter of the outlet is larger than that of the inlet.
As a further improvement of the utility model, the bottom of the guide seat is provided with a guide sleeve; and the guide sleeve is provided with a plurality of blind holes.
As a further improvement of the utility model, a plurality of reinforcing ribs are uniformly distributed on the guide sleeve and are connected with the inner wall of the guide seat into a whole.
As a further improvement of the utility model, a gap is arranged between the valve core and the valve seat.
As a further improvement of the utility model, the valve core and the valve rod are integrated, the lower end of the valve core is provided with a guide rod, and the guide rod is matched with the guide sleeve for guiding.
As a further improvement of the utility model, an inner hole arranged on the pressing sleeve is matched with the valve rod for guiding.
The positive progress effects of the utility model are as follows:
1. the inlet and the outlet of the valve body are in a right angle of 90 degrees, the medium flows into the side and the bottom, the outlet specification is smaller than the inlet specification, and gas diffusion is utilized.
2. The valve core is of an inverted serial structure, and an enough gap is reserved between the valve core and the valve seat, so that metal thermal expansion caused by high-temperature working conditions is avoided, and the medium can flow to drive the unclean medium to flow out of the valve body quickly, and the valve has a self-cleaning function.
3. The valve core flows and opens the structure, and the sealed face of valve core and disk seat is in the high pressure end promptly upstream position, keeps away from sealed face with medium flash evaporation cavitation erosion position, avoids sealed face damage, and sealed inefficacy.
4. The valve core is of an inverse serial structure, and the flow channel is amplified step by step from top to bottom, and the volume of the flow channel is synchronously amplified step by step. The gas-liquid two-phase or gas separation medium flows from the high-pressure end to the low-pressure end, the volume is expanded and expanded rapidly, the design of the flow channel is matched, and the pressure building is avoided.
5. The balance hole of the valve core is designed at the downstream of the sealing surface and is different from the structure that the traditional balance hole penetrates through the upstream and the downstream. When the valve is closed, the valve core balance hole fails, the valve core is of a non-balance structure, the valve core completely bears the closing differential pressure acting force of a medium, and the single sealing surface structure has a good sealing effect; at the moment of opening the valve, a medium directly enters between the valve core guide rod and the guide sleeve of the guide seat through the sealing surface from the balance hole, the medium pressure has upward thrust on the valve core guide rod, and the balance medium generates unbalanced force through the valve core which is amplified step by step, so that the adjustment precision is improved, the thrust of an actuating mechanism is reduced, and the cost is reduced.
6. The valve core and valve rod integrated structure is characterized in that the valve core guide rod guides downwards, the valve rod guides upwards, and the double-guide structure ensures stable adjustment and avoids the lateral abrasion of the valve core caused by deflection of the valve core caused by medium acting force.
Drawings
FIG. 1 is a schematic view of a high differential pressure multistage pressure reduction angle-type control valve for a high-pressure hydrogenation apparatus according to the present invention.
FIG. 2 is an enlarged view of the valve trim of the present invention.
Description of reference numerals: 1-valve body, 2-guide seat, 3-gasket, 4-valve seat, 5-valve core, 6-pressing sleeve, 7-valve rod, 8-gasket, 9-upper cover, 10-nut, 11-stud, 12-guide sleeve, 13-reinforcing rib, 14-throttling orifice, 15-gap, 16-first sealing surface, 17-throttling weir crest, 18-axial balancing hole, 19-radial balancing hole, 20-second sealing surface and 21-guide rod.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1-2, the high pressure difference multistage pressure reduction angle-type regulating valve for the high pressure hydrogenation apparatus comprises a valve body 1, a guide seat 2, a first gasket 3, a valve seat 4, a valve core 5, a pressure sleeve 6, a valve rod 7, a second gasket 8, an upper cover 9, a nut 10, a stud 11, and the like. The inlet and the outlet of the valve body 1 are at a right angle of 90 degrees; a guide seat 2 is arranged in the valve body 1; the guide seat 2 is provided with a first gasket 3 up and down; the valve core 5 and the valve rod 7 are integrated, the valve core, the valve seat 4 and the pressing sleeve 6 are sequentially arranged on the guide seat 2, and the valve rod 7 penetrates through the upper cover 9; a second gasket 8 is arranged between the valve body 1 and the upper cover 9, the upper cover 9 is mounted on the valve body 1 through a nut 10 and a stud 11, and the guide seat 2, the valve seat 4 and the pressing sleeve 6 are pressed in the valve body 1.
Preferably, as shown in fig. 2, the high-pressure hydrogenation apparatus uses a high-pressure-difference multistage depressurization angle-type regulating valve, a plurality of throttling orifices 14 are axially distributed in the valve seat 4, and the throttling orifices 14 are gradually enlarged from top to bottom; the uppermost throttling orifice 14 of the valve seat 4 is provided with a first sealing surface 16, and the rest throttling orifices 14 of the valve seat 4 correspond to the throttling weir notches 17 of the valve core 5 one by one, and a certain gap 15 is reserved.
Preferably, a plurality of throttling weirs 17 are axially distributed outside the valve core 5, and the throttling weirs 17 are gradually enlarged from top to bottom; the uppermost throttling weir 17 of the valve element 5 has a second sealing surface 20, the second sealing surface 20 forming a sealing pair with the first sealing surface 16 of the valve seat 4; the rest throttling weir notches 17 of the valve core 5 correspond to the throttling orifices 14 of the valve seat 4 one by one, and a certain gap 15 is reserved. The gap between the throttling orifice 14 and the throttling weir orifice 17 is as follows: 0.5-2.5 mm.
Preferably, the valve core 5 is provided with an axial balance hole 18 in the center, the axial balance hole 18 intersects with a radial balance hole 19 in a penetrating manner, and the outlet of the radial balance hole 19 is arranged below a second sealing surface 20 of the valve core 5.
Preferably, as shown in fig. 1, the inlet and the outlet of the valve body 1 are at a right angle of 90 degrees, the side of the valve body 1 is provided with the inlet, the bottom of the valve body 1 is provided with the outlet, and the diameter of the outlet is larger than that of the inlet.
Preferably, the bottom of the guide seat 2 is provided with a guide sleeve 12; the guide sleeve 12 is provided with a plurality of blind holes. A plurality of reinforcing ribs 13 are uniformly distributed on the guide sleeve 12, and the plurality of reinforcing ribs 13 are connected with the inner wall of the guide seat 2 into a whole.
Preferably, the valve core 5 and the valve rod 7 are integrated, the lower end of the valve core 5 is provided with a guide rod 21 which is matched with the guide sleeve 12 of the guide seat 2 for guiding, and the valve rod 7 is matched with an inner hole arranged on the pressing sleeve 6 for guiding.
The inlet and the outlet of the valve body are in a 90-degree right angle and utilize gas diffusion; enough clearance is reserved between the valve core and the valve seat, so that metal thermal expansion caused by high-temperature working conditions is avoided, the medium can flow to drive the unclean medium to flow out of the valve body quickly, and the valve has a self-cleaning function; the flash evaporation cavitation position of the medium is far away from the sealing surface, so that the sealing surface is prevented from being damaged and sealing is prevented from losing efficacy; the balance hole of the valve core is designed at the downstream of the sealing surface, when the valve is closed, the balance hole of the valve core fails and is in a non-balance structure, the valve core completely bears the closing differential pressure acting force of a medium, and the sealing effect is good due to the single sealing surface structure; at the moment of opening the valve, a medium directly enters between the valve core guide rod and the guide sleeve of the guide seat through the sealing surface from the balance hole, the medium pressure has upward thrust on the valve core guide rod, and the unbalanced force generated by the valve core after the medium is amplified step by step is balanced, so that the adjustment precision is improved, the thrust of an actuating mechanism is reduced, and the cost is reduced; can ensure stable adjustment and avoid the lateral abrasion of the valve core caused by the deflection of the valve core caused by the action force of a medium.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (9)
1. The high-pressure-difference multistage depressurization angle-type regulating valve for the high-pressure hydrogenation device comprises a valve body (1), a guide seat (2), a valve seat (4), a valve core (5), a valve rod (7) and an upper cover (9), wherein the guide seat (2) is arranged in the valve body (1); the valve core (5) is connected with the valve rod (7), the valve core, the valve seat (4) and the pressing sleeve (6) are sequentially arranged on the guide seat (2), and the valve rod (7) penetrates through the upper cover (9); the upper cover (9) is arranged on the valve body (1), and the guide seat (2), the valve seat (4) and the pressing sleeve (6) are pressed in the valve body (1) by a nut (10) and a stud (11); the method is characterized in that: a plurality of throttling orifices (14) are axially distributed in the valve seat (4), the throttling orifices (14) at the upper end of the valve seat (4) are provided with first sealing surfaces (16), a plurality of throttling weir notches (17) are axially distributed outside the valve core (5), and the throttling weir notches (17) at the upper end of the valve core (5) are provided with second sealing surfaces (20); the first sealing surface (16) and the second sealing surface (20) form a sealing pair; the rest throttling orifices (14) of the valve seat (4) correspond to the throttling weir crests (17) of the valve core (5) one by one, and gaps (15) are formed between the throttling orifices (14) and the throttling weir crests (17);
an axial balance hole (18) is formed in the center of the valve core (5), the axial balance hole (18) and a radial balance hole (19) are intersected in a penetrating mode, and an outlet of the radial balance hole (19) is formed in the position below a second sealing surface (20) of the valve core (5).
2. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 1, characterized in that: the throttling orifice (14) is gradually enlarged from top to bottom; the throttling weir crest (17) is amplified step by step from top to bottom.
3. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 1, characterized in that: the clearance between the throttling orifice (14) and the throttling weir crest (17) is as follows: 0.5-2.5 mm.
4. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 1, characterized in that: the inlet and the outlet of the valve body (1) are at a 90-degree right angle, the side part of the valve body (1) is provided with the inlet, the bottom of the valve body (1) is provided with the outlet, and the diameter of the outlet is larger than that of the inlet.
5. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 1, characterized in that: the bottom of the guide seat (2) is provided with a guide sleeve (12); the guide sleeve (12) is provided with a plurality of blind holes.
6. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 5, characterized in that: a plurality of reinforcing ribs (13) are uniformly distributed on the guide sleeve (12), and the plurality of reinforcing ribs (13) are connected with the inner wall of the guide seat (2) into a whole.
7. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 1, characterized in that: and a gap is arranged between the valve core (5) and the valve seat (4).
8. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 1 or 5, characterized in that: the valve core (5) and the valve rod (7) are integrated, a guide rod (21) is arranged at the lower end of the valve core (5), and the guide rod (21) is matched with the guide sleeve (12) for guiding.
9. The high differential pressure multistage pressure reduction angle type regulating valve for a high pressure hydrogenation apparatus according to claim 1, characterized in that: and an inner hole formed in the pressing sleeve (6) is matched with the valve rod (7) for guiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123343828.1U CN216715243U (en) | 2021-12-28 | 2021-12-28 | High-pressure-difference multistage pressure-reduction angle-type regulating valve for high-pressure hydrogenation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123343828.1U CN216715243U (en) | 2021-12-28 | 2021-12-28 | High-pressure-difference multistage pressure-reduction angle-type regulating valve for high-pressure hydrogenation device |
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| CN216715243U true CN216715243U (en) | 2022-06-10 |
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| CN202123343828.1U Active CN216715243U (en) | 2021-12-28 | 2021-12-28 | High-pressure-difference multistage pressure-reduction angle-type regulating valve for high-pressure hydrogenation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151551A (en) * | 2021-12-28 | 2022-03-08 | 江苏智能特种阀门有限公司 | High-pressure-difference multistage pressure-reduction angle-type regulating valve for high-pressure hydrogenation device |
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2021
- 2021-12-28 CN CN202123343828.1U patent/CN216715243U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151551A (en) * | 2021-12-28 | 2022-03-08 | 江苏智能特种阀门有限公司 | High-pressure-difference multistage pressure-reduction angle-type regulating valve for high-pressure hydrogenation device |
| CN114151551B (en) * | 2021-12-28 | 2024-05-28 | 江苏智能特种阀门有限公司 | High-pressure difference multi-stage pressure-reducing angle type regulating valve for high-pressure hydrogenation device |
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