Locking ring type hydraulically controlled bypass valve

Abstract

The present invention discloses an ingot-locking ring type hydraulically controlled bypass valve, comprising a cylinder cover, a piston, a piston cylinder, a support frame, a valve body, a valve, a valve shaft, an annular column, an ingot-locking ring and a support structure; the annular column is mounted on the valve shaft; an external thread is arranged on the outer wall of the annular column; an internal thread is arranged on the inner wall of the ingot-locking ring, and the ingot-locking ring is threadedly connected to the annular column; the outer wall of the support structure is fixedly connected to the inner wall of the support frame, and when the lower end of the valve closes the bypass pipe, the upper end face of the ingot-locking ring is tightly pressed against the lower end face of the support structure; the present invention adds an ingot-locking ring and a support structure, and when the hydraulically controlled bypass valve is in a closed position, the ingot-locking ring is rotated upward to press against the support structure, and the force of the valve stem to open the valve upward will be transmitted to the support frame through the ingot-locking ring and the support structure, so that the hydraulically controlled bypass valve is locked in a closed state, thereby reliably cutting off the water source of the bypass pipeline; compared with the prior art, the present application has a simple structure, low cost and low maintenance cost.

Description

Technical Field

[0001] The invention relates to the technical field of bypass valves, and in particular to a spindle-locking ring type hydraulically controlled bypass valve. Background Art

[0002] The hydraulically controlled bypass valve is installed on the bypass pipe of the water inlet valve to fill water and balance the water pressure before and after the water inlet valve. The hydraulically controlled bypass valve can realize the function of remote and automatic opening and closing of the valve through hydraulic oil. The hydraulically controlled bypass pipe is usually installed on the main valve of the turbine, which is a very important device of the main valve of the turbine. The typical structure of the hydraulically controlled bypass valve is as follows: Figure 1 As shown, Figure 1 The cylinder head, piston, piston cylinder, support frame, valve body, valve, valve shaft and sealing mechanism are shown.

[0003] Problems with the existing technology: When the main valve is inspected and repaired, the bypass pipe water source needs to be reliably cut off. If the bypass pipe leaks, the high-pressure water source cannot be effectively controlled, which can easily cause personal injury or damage to the main equipment, causing irreparable losses to production. The hydraulically controlled bypass valve is controlled by hydraulic oil, and it is prone to problems such as hydraulic oil pipeline breakage, pipeline joint leakage, and oil circuit automatic control valve malfunction. It cannot be used to cut off the bypass pipe water source when the main equipment is inspected and repaired. Now, a manual valve is usually added upstream of the hydraulically controlled bypass valve to reliably cut off the bypass pipe water source. However, due to the pressure difference between the upstream and downstream ends of the manual valve, it is very difficult to open or close the manual valve, and it is very easy to be damaged, which increases both the cost of purchasing equipment and the cost of equipment maintenance.

[0004] Therefore, it is necessary to develop a lock spindle ring type hydraulically controlled bypass valve to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to design a spindle-locking ring type hydraulically controlled bypass valve in order to solve the above-mentioned problem.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] Locking ring type hydraulically controlled bypass valve, including:

[0008] Cylinder head;

[0009] piston;

[0010] The piston cylinder; the cylinder cover is arranged on the top of the piston cylinder, and the bottom of the piston cylinder is provided with a first through hole for the valve shaft to pass through;

[0011] Support frame; the bottom of the piston cylinder is connected to the top of the support frame, and the bottom of the support frame is connected to the top of the valve body.

[0012] The top of the valve body is provided with a second through hole for the valve shaft to pass through;

[0013] valve;

[0014] The valve shaft; the valve is fixedly mounted on the lower end of the valve shaft; the valve shaft is arranged through the first through hole and the second through hole;

[0015] Circular ring column; the circular ring column is sleeved on the valve shaft; the outer wall of the circular ring column is provided with an external thread;

[0016] Ingot locking ring; an internal thread is arranged on the inner side wall of the ingot locking ring, and the ingot locking ring is threadedly connected with the circular ring column;

[0017] Support structure; the outer wall of the support structure is fixedly connected to the inner wall of the support frame, and when the lower end of the valve closes the bypass pipe, the upper end face of the locking spindle ring is tightly pressed against the lower end face of the support structure.

[0018] Specifically, sealing mechanisms are provided in both the first through hole and the second through hole for sliding sealing of the valve shaft.

[0019] Preferably, the support structure is formed in a cylindrical ring shape, and a gap is provided between the inner side wall of the support structure and the outer side wall of the circular ring column.

[0020] Preferably, the support structure is perpendicular to the valve axis.

[0021] Furthermore, the gap between the inner wall of the support structure and the outer wall of the circular ring column is not less than 1 mm.

[0022] As a preferred embodiment, the annular column and the valve shaft are integrally formed.

[0023] As another preferred embodiment, the annular column is welded to the valve shaft.

[0024] The beneficial effects of the present invention are:

[0025] 1. By adding a spindle lock ring and a supporting structure, when the hydraulically controlled bypass valve is in a closed position, the spindle lock ring is rotated upward to press against the supporting structure, and the force of the valve stem to open the valve upward will be transmitted to the supporting frame through the spindle lock ring and the supporting structure, so that the hydraulically controlled bypass valve is locked in a closed state, thereby reliably cutting off the water source of the bypass pipeline; compared with the prior art, the present application has a simple structure, low cost and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a bypass valve in the prior art;

[0027] Figure 2 This is a schematic diagram of the structure of this application;

[0028] Figure 3 This is a schematic diagram of the installation structure of the circular ring column and the ingot locking ring in this application;

[0029] In the figure: 1. cylinder head; 2. piston; 3. piston cylinder; 4. support frame; 5. valve body; 6. valve; 7. valve shaft; 71. external thread; 72. circular ring column; 8. sealing mechanism; 9. supporting structure; 10. locking ingot ring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] like Figure 2 , 3 As shown, the lock spindle ring type hydraulically controlled bypass valve includes:

[0038] Cylinder head 1;

[0039] Piston 2;

[0040] The piston cylinder 3; the cylinder cover 1 is arranged on the top of the piston cylinder 3, and the bottom of the piston cylinder 3 is provided with a first through hole for the valve shaft 7 to pass through;

[0041] The bottom of the piston cylinder 3 is connected to the top of the support frame 4, and the bottom of the support frame 4 is connected to the top of the valve body 5.

[0042] The valve body 5; a second through hole for the valve shaft 7 to pass through is provided at the top of the valve body 5;

[0043] Valve 6;

[0044] The valve shaft 7; the valve 6 is fixedly mounted on the lower end of the valve shaft 7; the valve shaft 7 is arranged through the first through hole and the second through hole;

[0045] The circular column 72 is sleeved on the valve shaft 7; an outer wall of the circular column 72 is provided with an external thread 71;

[0046] Ingot locking ring 10; an internal thread is provided on the inner side wall of the ingot locking ring 10, and the ingot locking ring 10 is threadedly connected to the circular ring column 72;

[0047] Support structure 9; the outer wall of the support structure 9 is fixedly connected to the inner wall of the support frame 4, and when the lower end of the valve 6 closes the bypass pipe, the locking ring is manually rotated so that the upper end surface of the locking ring 10 is tightly pressed against the lower end surface of the support structure 9, and the bypass valve is locked in a fully closed state.

[0048] like Figure 1 As shown, sealing mechanisms 8 are provided in both the first through hole and the second through hole for sliding sealing of the valve shaft 7 .

[0049] like Figure 2 , 3 As shown, the support structure 9 is formed into a cylindrical ring shape, and a gap is provided between the inner wall of the support structure 9 and the outer wall of the annular column 72 .

[0050] In other embodiments, the support structure 9 may be formed into a long strip, or a rectangular parallelepiped with a through hole in the center, and it is sufficient that the lower end thereof can be tightly against the locking ingot ring 10 .

[0051] like Figure 2 , 3 As shown, the support structure 9 is perpendicular to the valve axis 7 .

[0052] The gap between the inner wall of the support structure 9 and the outer wall of the annular column 72 is not less than 1 mm.

[0053] As a preferred embodiment, the annular column 72 and the valve shaft 7 are integrally formed.

[0054] As another preferred embodiment, the annular column 72 is welded to the valve shaft 7 .

[0055] During normal use, the present application does not affect the normal opening and closing of the valve by adding the ingot locking ring 10 and the supporting structure 9. Only when the main valve is to be inspected and the water source of the bypass pipeline needs to be reliably cut off, the ingot locking ring 10 is screwed upward and pressed against the supporting structure 9 when the hydraulically controlled bypass valve is in the closed position. Under normal use, the ingot locking ring 10 is generally screwed down to the limit, which does not affect the opening of the hydraulically controlled bypass valve. When the hydraulically controlled bypass valve is in the closed position, the ingot locking ring 10 is rotated upward and pressed against the supporting structure 9 (the supporting frame 4 is generally provided with an opening thereon, so that the hand can be inserted through the opening for operation). The force of the valve stem to open the valve upward will be transmitted to the supporting frame 4 through the ingot locking ring 10 and the supporting structure 9, so that the hydraulically controlled bypass valve is locked in the closed state, thereby reliably cutting off the water source of the bypass pipeline.

[0056] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. All technical variations made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. Locking ring type hydraulically controlled bypass valve, including: Cylinder head; piston; Piston cylinder; The cylinder cover is arranged on the top of the piston cylinder, and the bottom of the piston cylinder is provided with a first through hole for the valve shaft to pass through; Support frame; the bottom of the piston cylinder is connected to the top of the support frame, and the bottom of the support frame is connected to the top of the valve body. The valve body; a second through hole for the valve shaft to pass through is provided on the top of the valve body; valve; The valve shaft; the valve is fixedly mounted on the lower end of the valve shaft; the valve shaft is arranged through the first through hole and the second through hole; Characterized in that the bypass valve also includes: Circular ring column; the circular ring column is sleeved on the valve shaft; the outer wall of the circular ring column is provided with an external thread; Ingot locking ring; an internal thread is arranged on the inner side wall of the ingot locking ring, and the ingot locking ring is threadedly connected with the circular ring column; Support structure; the outer wall of the support structure is fixedly connected to the inner wall of the support frame, and when the lower end of the valve closes the bypass pipe, the upper end face of the locking ring is tightly pressed against the lower end face of the support structure; the support structure is perpendicular to the valve shaft; Sealing mechanisms are provided in both the first through hole and the second through hole for sliding sealing of the valve shaft; The supporting structure is formed into a cylindrical ring shape, and a gap is arranged between the inner side wall of the supporting structure and the outer side wall of the circular ring column.

2. The ingot-locking ring type hydraulically controlled bypass valve according to claim 1 is characterized in that: The gap between the inner wall of the supporting structure and the outer wall of the circular ring column is not less than 1 mm.

3. The ingot-locking ring type hydraulically controlled bypass valve according to claim 1, characterized in that: The circular ring column and the valve shaft are formed in one piece.

4. The ingot-locking ring type hydraulically controlled bypass valve according to claim 1, characterized in that: The circular ring column is welded to the valve shaft.

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