High-pressure bypass regulating valve with protective seal
By installing gaskets and injecting inert gas or hydraulic oil through a check valve between the flanges of the high-pressure bypass regulating valve, combined with the spring thrust, an effective seal between the flanges is achieved, solving the leakage problem caused by insufficient locking force in traditional sealing methods.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional high-pressure bypass regulating valves are prone to leakage at the connection points due to insufficient tightening of bolts and nuts.
A gasket ring is placed between flange A and flange B. The gasket ring has grooves on both sides and a shielding ring is installed on the inner arc surface. Inert gas or hydraulic oil is injected using a one-way valve. Combined with the spring thrust, the sealing convex ring and the protruding ring are inserted into the gasket ring to achieve a seal.
It effectively prevents leakage at the flange joints, ensures sealing, and avoids liquid or gas leakage.
Smart Images
Figure CN224107735U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of governing valve, concretely is a kind of high-pressure bypass governing valve with protective sealing. BACKGROUND
[0002] High-pressure bypass governing valve is a kind of special high-pressure difference governing valve with novel structure, it has the function of starting governing valve, bypass pressure reducing valve, safety valve;Two ends of high-pressure bypass governing valve are generally communicated with pipeline using flange plate, and the conventional sealing mode is to set sealing ring between two flange plates, then shrink using bolt and nut, the traditional mode is basically to use the elasticity of sealing pad to fill the gap between two flange plates, and insufficient locking force of bolt and nut can lead to leakage at joint. SUMMARY
[0003] (I) technical problem solved
[0004] In view of the deficiencies of prior art, the utility model provides a kind of high-pressure bypass governing valve with protective sealing, with the advantage of protective sealing, solve the problem in the above.
[0005] (II) technical scheme
[0006] To realize the purpose of protective sealing, the utility model provides the following technical scheme: a kind of high-pressure bypass governing valve with protective sealing, including governing valve body, the both ends of governing valve body are fixedly installed with flange plate A, the side of flange plate A is detachably installed with flange plate B by bolt and nut, flange plate A and flange plate B are provided with gasket ring between, the side of flange plate B is fixedly installed with pipeline, the other side of flange plate B is fixedly installed with convex ring, the side of flange plate A is movably embedded with sealing assembly, the both sides of gasket ring are provided with recess, the inner arc surface of gasket ring is fixedly installed with shielding ring.
[0007] Preferably, the side of flange plate A is provided with stepped groove, the opening of stepped groove is detachably installed with two closed rings, and the sealing convex ring is provided between the two closed rings.
[0008] Preferably, the side end of sealing convex ring is fixedly installed with piston ring, the both sides of piston ring are embedded with rubber ring, spring is provided between piston ring and stepped groove, the outer wall of flange plate A is embedded with one-way valve, and the one-way valve is communicated with stepped groove through pipe body.
[0009] Preferably, the convex ring and sealing convex ring are inserted in the recess on the both sides of gasket ring, and the diameter of convex ring is less than the diameter of sealing convex ring.
[0010] Preferably, the piston ring is seamlessly slidably connected with stepped groove through rubber ring.
[0011] Preferably, the shielding ring is located at the gap between the inner walls of the flange plate A and the flange plate B.
[0012] (Three) beneficial effects
[0013] Compared with the prior art, the high-pressure bypass regulating valve with protective sealing has the following beneficial effects:
[0014] The high-pressure bypass regulating valve with protective sealing, the flange plate A, the gasket ring and the flange plate B are connected with each other through bolts and nuts, inert gas is injected into the stepped groove through the one-way valve, the expansion performance of the gas is combined with the thrust force of the spring, the piston ring and the sealing convex ring are moved outward, then the sealing convex ring is tightly inserted into the gasket ring, the side convex ring of the flange plate B is also inserted into the gasket ring, the shielding ring on the inner wall of the gasket ring is also attached to the gap between the flange plate A and the flange plate B, and the gap between the flange plate A and the flange plate B is protected, and the leakage of the gap is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;
[0016] Figure 2 It is a separation structure schematic diagram of the flange plate A, the gasket ring and the flange plate B of the utility model;
[0017] Figure 3 It is a separation and cutting structure schematic diagram of the flange plate A, the gasket ring and the flange plate B of the utility model;
[0018] Figure 4 It is a cutting and separation structure schematic diagram of the sealing assembly of the utility model;
[0019] Figure 5 It is a structure schematic diagram of the utility model Figure 3 A structure schematic diagram of the utility model.
[0020] In the figure: 1, regulating valve body; 2, flange plate A; 3, gasket ring; 4, flange plate B; 5, pipeline; 6, bolt and nut; 7, sealing assembly; 8, convex ring; 9, groove; 10, shielding ring; 11, stepped groove; 12, closed ring; 13, sealing convex ring; 14, piston ring; 15, rubber ring; 16, spring; 17, one-way valve. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0022] Please refer to Figures 1-3 A high-pressure bypass regulating valve with protective sealing, comprising a regulating valve body 1, the regulating valve body 1 is a high-pressure bypass regulating valve of existing mature products, the high-pressure bypass regulating valve is sold on all major platforms, therefore the internal structure is not described; the flange plate A2 is fixedly installed at both ends of the regulating valve body 1, the side surface of the flange plate A2 is detachably installed with the flange plate B4 through the bolt and the nut 6, the gasket ring 3 is arranged between the flange plate A2 and the flange plate B4, the gasket ring 3 adopts rubber pad and has elasticity, so that the gasket ring 3 is convenient to deform by extrusion; the side surface of the flange plate B4 is fixedly installed with the pipe 5.
[0023] Please refer to Figures 1-3 The other side surface of the flange plate B4 is fixedly installed with the convex ring 8, and the side surface of the flange plate A2 movably embeds the sealing assembly 7, so as to ensure that the gap between the flange plates does not leak; the recess 9 is formed in the two sides of the gasket ring 3, the diameter of the recess 9 on one side is greater than the diameter of the recess 9 on the other side; the inner arc surface of the gasket ring 3 is fixedly installed with the shielding ring 10, and the shielding ring 10 is located at the gap position between the inner walls of the flange plate A2 and the flange plate B4.
[0024] Please refer to Figures 4-5 The side surface of the flange plate A2 is provided with the stepped groove 11, the two closed rings 12 are detachably installed at the opening of the stepped groove 11, and the sealing convex ring 13 is arranged between the two closed rings 12. The convex ring 8 and the sealing convex ring 13 are inserted in the recess 9 on the two sides of the gasket ring 3, the diameter of the convex ring 8 is less than the diameter of the sealing convex ring 13, the convex ring 8 is adapted to the small-diameter recess 9, the sealing convex ring 13 is adapted to the large-diameter recess 9, and the mutual adaptation is ensured.
[0025] Please refer to Figures 4-5 The side end of the sealing convex ring 13 is fixedly installed with the piston ring 14, the two sides of the piston ring 14 are embedded with the rubber ring 15, the piston ring 14 is seamlessly slidingly connected with the stepped groove 11 through the rubber ring 15, a closed cavity is formed between the piston ring 14 and the stepped groove 11, inert gas is conveniently injected, a spring 16 is arranged between the piston ring 14 and the stepped groove 11, the outer wall of the flange plate A2 is embedded with the one-way valve 17, the one-way valve 17 is communicated with the stepped groove 11 through the pipe body, inert gas is conveniently injected, and backflow of the gas is prevented.
[0026] Working principle: in use, the flange A2, gasket ring 3 and flange B4 three mutually interface using bolts and nuts 6, then inject inert gas into the stepped groove 11 using one-way valve 17, the expansion performance of the gas and the thrust force of spring 16 combination, let piston ring 14 and sealing convex ring 13 move out, then sealing convex ring 13 will be tightly inserted into gasket ring 3, and the side of flange B4 protruding ring 8 will also be inserted into gasket ring 3, wherein the shielding ring 10 of gasket ring 3 inner wall will also adhere to the gap between flange A2 and flange B4, then realize the protection of the gap between flange A2 and flange B4, and can also ensure that the gap will not leak.
[0027] Also can inject hydraulic oil into the stepped groove 11 using one-way valve 17, to ensure that the piston ring 14 has a strong forward movement in the stepped groove 11, and will not reset.
[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A high-pressure bypass regulating valve with protective seal, comprising a regulating valve body (1), wherein flanges A (2) are fixedly installed at both ends of the regulating valve body (1), and flanges B (4) are detachably installed on the side of flanges A (2) by bolts and nuts (6), a gasket (3) is provided between flanges A (2) and flanges B (4), and a pipe (5) is fixedly installed on the side of flanges B (4), characterized in that: A protruding ring (8) is fixedly installed on the other side of the flange B (4), a sealing component (7) is movably embedded on the side of the flange A (2), grooves (9) are opened on both sides of the gasket ring (3), and a shielding ring (10) is fixedly installed on the inner arc surface of the gasket ring (3).
2. The high-pressure bypass regulating valve with protective seal according to claim 1, characterized in that: The flange A (2) has a stepped groove (11) on its side. Two sealing rings (12) can be detachably installed at the opening of the stepped groove (11). A sealing convex ring (13) is interspersed between the two sealing rings (12).
3. A high-pressure bypass regulating valve with protective seal according to claim 2, characterized in that: A piston ring (14) is fixedly installed on the side end of the sealing convex ring (13). Rubber rings (15) are embedded on both sides of the piston ring (14). A spring (16) is provided between the piston ring (14) and the stepped groove (11). A one-way valve (17) is embedded on the outer wall of the flange A (2). The one-way valve (17) is connected to the stepped groove (11) through a pipe.
4. A high-pressure bypass regulating valve with protective seal according to claim 3, characterized in that: The protruding ring (8) and the sealing ring (13) are inserted into the grooves (9) on both sides of the gasket ring (3), and the diameter of the protruding ring (8) is smaller than the diameter of the sealing ring (13).
5. A high-pressure bypass regulating valve with protective seal according to claim 3, characterized in that: The piston ring (14) is seamlessly connected to the stepped groove (11) via a rubber ring (15).
6. A high-pressure bypass regulating valve with protective seal according to claim 1, characterized in that: The shielding ring (10) is located at the seam between the inner walls of flange A (2) and flange B (4).