CN216078551U - Throttling structure of multi-stage pressure reduction regulating valve - Google Patents
Throttling structure of multi-stage pressure reduction regulating valve Download PDFInfo
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- CN216078551U CN216078551U CN202122602385.7U CN202122602385U CN216078551U CN 216078551 U CN216078551 U CN 216078551U CN 202122602385 U CN202122602385 U CN 202122602385U CN 216078551 U CN216078551 U CN 216078551U
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Abstract
The utility model relates to the technical field of valves, and particularly discloses a throttling structure of a multistage pressure reduction regulating valve, which comprises a throttling component, a valve seat, a guide sleeve and a valve core, wherein the bottom of the throttling component is sleeved on the valve seat, the bottom of the guide sleeve is sleeved on the throttling component, the valve core is arranged in the guide sleeve and the throttling component in a penetrating manner, the side wall of the guide sleeve is provided with a plurality of medium inlets, the throttling component is formed by stacking a plurality of groups of throttling parts which are sequentially arranged from top to bottom, each group of throttling parts is respectively provided with a plurality of pressure reduction holes, the pressure reduction holes on the plurality of groups of throttling parts are gradually reduced from top to bottom, and the number of the pressure reduction holes on the lower group of throttling parts is more than or equal to half of that on the upper group of throttling parts and less than that on the upper group of throttling parts. The medium passes through the layer-by-layer pressure reduction holes and the medium guide groove, so that the effect of reducing pressure layer-by-layer is realized, the medium is prevented from directly aligning to the sealing surface of the valve seat and flowing out, and the service life of the sealing surface is prolonged.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to a throttling structure of a multi-stage pressure reduction regulating valve.
Background
In order to adapt to the rapid development of modern industry, valves under high-parameter and large-pressure-difference working conditions are applied more and more, and the requirements of users on the performance and the service life of the valves are more and more strict; at present, the main water supply and high-pressure temperature reduction water regulating valve in the power industry has the condition of unstable regulating performance, the production efficiency is seriously influenced, and potential safety hazards are generated; the main reasons for such problems are the large pressure difference of the medium and the poor pressure reduction effect.
At present, a pressure reduction structure of a main water supply and high-pressure temperature reduction water regulating valve mostly adopts a multi-layer sleeve pressure reduction and labyrinth disc superposition structure for pressure reduction; however, the multi-layer sleeve pressure reducing structure has unstable pressure reducing effect and large deviation on small-flow occasions, and the stability of the adjusting performance is influenced; although the labyrinth structure can achieve a good pressure reduction effect, the processing difficulty is high, and the cost is high, so that the throttling structure of the multi-stage pressure reduction regulating valve needs to be invented.
Disclosure of Invention
The utility model aims to provide a throttling structure of a multi-stage pressure reduction regulating valve, which solves the problems.
In order to solve the technical problems, the utility model provides a throttling structure of a multi-stage pressure reduction regulating valve, which comprises a throttling component, a valve seat, a guide sleeve and a valve core, wherein the bottom of the throttling component is sleeved on the valve seat, the bottom of the guide sleeve is sleeved on the throttling component, the valve core is arranged in the guide sleeve and the throttling component in a penetrating way, the side wall of the guide sleeve is provided with a plurality of medium inlets,
the throttling assembly is formed by stacking a plurality of groups of throttling parts which are sequentially arranged from top to bottom, a plurality of pressure reducing holes are respectively arranged on each group of throttling parts, the pressure reducing holes on the plurality of groups of throttling parts are gradually reduced from top to bottom, and the number of the pressure reducing holes on the throttling parts of the lower group is more than or equal to half of that of the pressure reducing holes on the throttling parts of the upper group;
each group of throttling parts respectively comprises a plurality of throttling disc sheets, the upper surface and the lower surface of each throttling disc sheet are respectively provided with a plurality of first medium guide grooves and second medium guide grooves, the first medium guide grooves and the second medium guide grooves are arranged in a staggered mode, and pressure reduction holes are formed in the first medium guide grooves and the second medium guide grooves.
Furthermore, the number of the pressure reduction holes in the first medium guide groove on each throttling disk is equal to the number of the pressure reduction holes in the second medium guide groove.
Further, the number of the pressure reduction holes in the second medium guide groove on each throttling disk is smaller than that of the pressure reduction holes in the first medium guide groove.
Furthermore, the number of the first medium guide grooves and the second medium guide grooves on each throttling disc is four, the four first medium guide grooves and the four second medium guide grooves are fan-shaped, and the small-diameter end of each first medium guide groove is communicated with the inner hole of each throttling disc.
Furthermore, a plurality of medium holes are formed in the guide sleeve, balance holes are correspondingly formed in the bottoms of the medium holes one to one, and the balance holes are communicated with the medium inlets.
Furthermore, each throttling disc is connected through brazing.
Furthermore, two sides of the throttling disc are provided with symmetrical V-shaped grooves, and the V-shaped grooves are used for brazing the throttling disc.
Furthermore, the first medium guide grooves on the lower group of the throttling disc sheets and the first medium guide grooves on the upper group of the throttling disc sheets are arranged in parallel up and down.
The throttling disc has the advantages that the plurality of groups of throttling discs are respectively provided with the plurality of pressure reducing holes, each throttling disc is also provided with the first medium guide groove and the second medium guide groove, the first medium guide groove and the second medium guide groove are respectively communicated with the plurality of pressure reducing holes, and a medium passes through the pressure reducing holes and the medium guide grooves layer by layer, so that the pressure reducing effect layer by layer is realized, meanwhile, the medium is prevented from directly aligning to the sealing surface of the valve seat to flow out, the service life of the sealing surface is effectively prolonged, and the cavitation erosion and the scouring of the sealing surface are reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a cross-sectional view of a throttling arrangement for a multi-stage pressure reducing regulator valve;
FIG. 2 is an overall structural view of a throttling structure of the multistage pressure-reducing regulating valve;
FIG. 3 is a partial view of a throttling assembly of the throttling arrangement of the multi-stage pressure reducing regulator valve;
FIG. 4 is a top view of a first throttling disk of a throttling arrangement of a multi-stage pressure reducing regulator valve;
FIG. 5 is a bottom view of a first orifice plate of the throttling arrangement of the multi-stage pressure reducing regulator valve;
FIG. 6 is a top view of a second throttling disk of the throttling arrangement of the multi-stage pressure reducing regulator valve;
in the figure: 1-throttling component, 2-valve seat, 3-guide sleeve, 4-valve core, 5-medium inlet, 6-medium hole, 7-balance hole, 8-V-shaped groove, 11-decompression hole, 12-throttling disc, 13-first medium guide groove and 14-second medium guide groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a specific embodiment of the present invention, as shown in fig. 1 to 6, a throttling structure of a multi-stage pressure-reducing regulating valve is specifically disclosed, which includes a throttling component 1, a valve seat 2, a guide sleeve 3 and a valve core 4, wherein the bottom of the throttling component 1 is sleeved on the valve seat 2, the bottom of the guide sleeve 3 is sleeved on the throttling component 1, the valve core 4 is arranged in the guide sleeve 3 and the throttling component 1 in a penetrating manner, the side wall of the guide sleeve 3 is provided with a plurality of medium inlets 5, the guide sleeve 3 is provided with a plurality of medium holes 6, the bottom of each medium hole 6 is provided with a balance hole 7 in a one-to-one correspondence manner, and the balance holes 7 are communicated with the medium inlets 5.
The throttling component 1 is formed by stacking a plurality of groups of throttling parts which are sequentially arranged from top to bottom, a plurality of pressure reducing holes 11 are respectively arranged on each group of throttling parts, the pressure reducing holes 11 on the plurality of groups of throttling parts are gradually reduced from top to bottom, and the number of the pressure reducing holes 11 on the lower group of throttling parts is more than or equal to half of the number of the pressure reducing holes 11 on the upper group of throttling parts; each group of throttling parts respectively comprises a plurality of throttling disc sheets 12, and each throttling disc sheet 12 is connected through brazing; the upper surface and the lower surface of each throttling disc 12 are respectively provided with a plurality of first medium guide grooves 13 and second medium guide grooves 14, the first medium guide grooves 13 and the second medium guide grooves 14 are arranged in a staggered manner, and pressure reduction holes 11 are formed in the first medium guide grooves 13 and the second medium guide grooves 14; the number of the first medium guide grooves 13 and the second medium guide grooves 14 on each throttling disc 12 is four, the four first medium guide grooves 13 and the four second medium guide grooves 14 are both in a fan shape, the small-diameter ends of the four first medium guide grooves are communicated with the inner hole of the throttling disc 12, and the first medium guide grooves 13 on the lower group of throttling disc 12 and the first medium guide grooves 13 on the upper group of throttling disc 12 are arranged in parallel up and down; the number of the pressure reducing holes 11 in the first medium guide groove 13 on each throttling disc 12 is equal to that of the pressure reducing holes 11 in the second medium guide groove 14, the number of the pressure reducing holes 11 in the second medium guide groove 14 on each throttling disc 12 is smaller than that of the pressure reducing holes 11 in the first medium guide groove 13, symmetrical V-shaped grooves 8 are formed in two sides of each throttling disc 12, and the V-shaped grooves 8 are used for brazing the throttling discs 12.
Example 1: the throttling parts are nine groups, the first group of throttling disc 12 is one piece, eight groups of pressure reducing holes 11 are arranged on the throttling disc 12, wherein four groups of pressure reducing holes 11 are uniformly distributed in the first medium guide groove 13, the other four groups of pressure reducing holes 11 are uniformly distributed in the second medium guide groove 14, and the number of each group of pressure reducing holes 11 is ten;
the second group of throttling disk sheets 12 is one, eight groups of pressure reducing holes 11 are arranged on the throttling disk sheets 12, wherein four groups of pressure reducing holes 11 are uniformly distributed in the first medium guide groove 13, the other four groups of pressure reducing holes 11 are uniformly distributed in the second medium guide groove 14, and the number of each group of pressure reducing holes 11 is nine;
the third group of throttling disc pieces 12 is one piece, eight groups of pressure reducing holes 11 are arranged on the throttling disc pieces 12, wherein four groups of pressure reducing holes 11 are uniformly distributed in the first medium guide groove 13, the other four groups of pressure reducing holes 11 are uniformly distributed in the second medium guide groove 14, and the number of each group of pressure reducing holes 11 is 8; by analogy, the pressure reducing holes 11 of each throttling disc 12 below are arranged in a gradually decreasing mode;
the first medium guide grooves 13 and the second medium guide grooves 14 on a plurality of groups of throttling discs 12 on the throttling part are arranged in parallel up and down.
Example 2: the throttling components are divided into three groups, the first group of throttling disk sheets 12 is three, each throttling disk sheet 12 is provided with eight groups of pressure reducing holes 11, wherein the four groups of pressure reducing holes 11 are uniformly distributed in a first medium guide groove 13, the other four groups of pressure reducing holes 11 are uniformly distributed in a second medium guide groove 14, and the two groups of pressure reducing holes 11 are four in number;
the second group of throttling disc sheets 12 are two, eight groups of pressure reducing holes 11 are arranged on the first throttling disc sheet 12 of the second group, wherein four groups of pressure reducing holes 11 are uniformly distributed in the first medium guide groove 13, the number of each group of pressure reducing holes 11 is four, the other four groups of pressure reducing holes 11 are uniformly distributed in the second medium guide groove 14, and the number of each group of pressure reducing holes 11 is three;
eight groups of pressure reducing holes 11 are arranged on the second group of second throttling plate 12, wherein four groups of pressure reducing holes 11 are uniformly distributed in the first medium guide groove 13, the number of the pressure reducing holes 11 in each group is three, the other four groups of pressure reducing holes 11 are uniformly distributed in the second medium guide groove 14, and the number of the pressure reducing holes 11 in each group is two;
the third group of throttling disc sheets 12 is one, eight groups of pressure reducing holes 11 are arranged on the third group of throttling disc sheets 12, wherein four groups of pressure reducing holes 11 are uniformly distributed in the first medium guide groove 13, the number of the pressure reducing holes 11 in each group is two, the other four groups of pressure reducing holes 11 are uniformly distributed in the second medium guide groove 14, and the number of the pressure reducing holes 11 in each group is one;
the first medium guide grooves 13 on the lower group of throttling disc sheets 12 and the first medium guide grooves 13 on the upper group of throttling disc sheets 12 are arranged in parallel up and down, and the second medium guide grooves 14 and the first medium guide grooves 13 are arranged in a staggered mode and are arranged in a bent mode up and down.
The working process of the utility model is as follows: when the valve core 4 moves linearly upwards along the inner hole of the guide sleeve 3, the valve core 4 is separated from the valve seat 2, a high-pressure medium enters from the medium inlet 5 and sequentially passes through the first medium guide groove 13, the pressure reduction hole 11 and the second medium guide groove 14, when the bottom of the valve core 4 is positioned at the inner side of the throttling disc 12, the medium is blocked by the excircle of the valve core 1, and part of the medium flows through the pressure reduction hole 11, the first medium guide groove 13 and the second medium guide groove 14 on the first group of throttling disc 12; and flows downwards through the pressure reducing holes 11, the first medium guide grooves 13 and the second medium guide grooves 14 on the second group of throttling disc plates 12; sequentially flows downwards in a group according to the above flow-through mode, flows out of the pressure reduction holes 11 and the second medium guide grooves 14, and finally flows out of the inner hole of the valve seat 4; the medium flows through each throttling disc 12, the medium pressure is gradually reduced through the pressure reduction holes 11, the compression of the first medium guide groove 13 and the second medium guide groove 14 and the process of amplifying and recompressing, the flow area of the medium is smaller towards the lower layer, the pressure reduction stages are more, the pressure reduction and throttling effect is better, the accurate adjustment of large pressure difference at small opening can be realized, simultaneously, the pressure reduction stages are more due to small opening, the cavitation phenomenon of the medium generated in the pressure reduction process is generated in the throttling component 1, the pressure and the flow reaching the inside of the throttling component 1 are lower, the sealing surfaces of the valve core 4 and the valve seat 2 can be effectively prevented from being cavitated and washed, and therefore the service life of the valve core 4 and the valve seat 2 is prolonged.
The above disclosure is only one preferred embodiment of the present invention, and certainly should not be construed as limiting the scope of the utility model, which is defined by the claims and their equivalents.
Claims (8)
1. The throttling structure of the multi-stage pressure reduction regulating valve is characterized by comprising a throttling component (1), a valve seat (2), a guide sleeve (3) and a valve core (4), wherein the bottom of the throttling component (1) is sleeved on the valve seat (2), the bottom of the guide sleeve (3) is sleeved on the throttling component (1), the valve core (4) is arranged in the guide sleeve (3) and the throttling component (1) in a penetrating manner, the side wall of the guide sleeve (3) is provided with a plurality of medium inlets (5),
the throttling assembly (1) is formed by stacking a plurality of groups of throttling parts which are sequentially arranged from top to bottom, a plurality of pressure reducing holes (11) are respectively arranged on each group of throttling parts, the pressure reducing holes (11) on the plurality of groups of throttling parts are gradually reduced from top to bottom, and the number of the pressure reducing holes (11) on the throttling parts in the lower group is more than or equal to half of the number of the pressure reducing holes (11) on the throttling parts in the upper group;
each group of throttling parts respectively comprises a plurality of throttling disc sheets (12), the upper surface and the lower surface of each throttling disc sheet (12) are respectively provided with a plurality of first medium guide grooves (13) and second medium guide grooves (14), the first medium guide grooves (13) and the second medium guide grooves (14) are arranged in a staggered mode, and pressure reduction holes (11) are formed in the first medium guide grooves (13) and the second medium guide grooves (14).
2. The throttling structure of a multistage pressure reduction regulating valve according to claim 1, wherein the number of pressure reduction holes (11) in the first medium guide groove (13) is equal to the number of pressure reduction holes (11) in the second medium guide groove (14) on each throttling disc (12).
3. The throttling structure of a multistage pressure-reducing regulating valve according to claim 1, wherein the number of pressure-reducing holes (11) in the second medium guide groove (14) on each of the throttling disks (12) is smaller than the number of pressure-reducing holes (11) in the first medium guide groove (13).
4. The throttling structure of the multistage pressure reduction regulating valve according to claim 1, wherein the number of the first medium guide grooves (13) and the second medium guide grooves (14) on each throttling disc (12) is four, the four first medium guide grooves (13) and the four second medium guide grooves (14) are fan-shaped, and the small-diameter end of each first medium guide groove is communicated with the inner hole of the throttling disc (12).
5. The throttling structure of a multistage depressurization regulating valve according to claim 1, wherein the guide sleeve (3) is provided with a plurality of medium holes (6), the bottom of each medium hole (6) is provided with a balance hole (7) in a one-to-one correspondence, and the balance holes (7) are communicated with the medium inlet (5).
6. The throttling structure of the multi-stage pressure reducing regulating valve according to claim 1, wherein each throttling disc (12) is connected with each other by brazing.
7. The throttling structure of multi-stage pressure reducing regulating valve according to claim 6, wherein the throttling disc (12) is provided with symmetrical V-shaped grooves (8) at two sides, and the V-shaped grooves (8) are used for brazing the throttling disc (12).
8. The throttling structure of the multistage pressure reduction regulating valve according to claim 1, wherein the first medium guide grooves (13) on the lower group of the throttling disk sheets (12) and the first medium guide grooves (13) on the upper group of the throttling disk sheets (12) are arranged in parallel up and down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122602385.7U CN216078551U (en) | 2021-10-28 | 2021-10-28 | Throttling structure of multi-stage pressure reduction regulating valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122602385.7U CN216078551U (en) | 2021-10-28 | 2021-10-28 | Throttling structure of multi-stage pressure reduction regulating valve |
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| CN216078551U true CN216078551U (en) | 2022-03-18 |
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| CN202122602385.7U Active CN216078551U (en) | 2021-10-28 | 2021-10-28 | Throttling structure of multi-stage pressure reduction regulating valve |
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