A safety valve for multi-angle installation

Abstract

The present invention relates to a multi-angle installation safety valve, comprising: a valve body, a valve seat, a valve disc and a pressure setting device; the characteristics are: the valve body is composed of a left valve body and a right valve body, the left valve body is radially and concentrically arranged with a discharge chamber, a first annular chamber and a second annular chamber in sequence from the center line of the inlet channel, the first annular chamber is connected to the inlet channel, and the right valve body is provided with a right discharge chamber connected to the outlet channel at a relative position; a circular ring is installed between the left valve body and the right valve body, and the annular end face dynamic seals on both sides of the circular ring are installed between the discharge chamber and the second annular chamber of the left valve body and the right valve body; a valve seat is arranged on the inner hole wall of the circular ring, the inner hole of the valve seat is connected to the first annular chamber, the adjusting screw is threadedly installed in the screw hole on the circular ring, and a counterweight is fixedly connected to the outer ring surface of the circular ring directly below the valve seat. It has the advantages of simple and convenient installation and low installation cost.

Description

Technical Field

[0001] The invention relates to a safety valve, in particular to a spring type safety valve. Background Art

[0002] Due to the characteristics of its structure, the traditional spring-loaded safety valve can only be installed vertically on the horizontal surface of a horizontal pipeline or pressure vessel. However, due to the limitation of the installation space, many media pipeline systems cannot directly install the safety valve in the vertical direction of the pipeline. Instead, auxiliary pipelines need to be installed on the pipeline, and the safety valve needs to be installed on the auxiliary pipeline, which makes the pipeline system complicated, the installation troublesome, and the installation cost high. Summary of the invention

[0003] In view of the technical defects existing in the prior art, the present invention provides a multi-angle installation safety valve which can be directly installed at a 360° position on a horizontal pipeline and has simple and convenient installation and low installation cost.

[0004] The technical solution of the present invention comprises: a valve body, a valve seat, a valve disc and a pressure setting device, wherein the pressure setting device is composed of a spring, an adjusting screw, a valve disc and a spring seat; the characteristics are as follows: the valve body is composed of a left valve body and a right valve body, the left valve body is provided with an inlet channel, the right valve body is provided with an outlet channel, the inlet channel and the outlet channel are on the same horizontal line, a discharge chamber, a first annular chamber and a second annular chamber are concentrically arranged on the left valve body radially from the center line of the inlet channel, the first annular chamber is connected with the inlet channel, and a right discharge chamber connected with the outlet channel is provided on the right valve body at a relative position; a circular ring is installed between the left valve body and the right valve body, the inner hole center of the circular ring is concentric with the discharge chamber, and the annular end faces on both sides of the circular ring are dynamically sealed It is installed between the discharge chamber of the left valve body and the right valve body and the second annular chamber; a valve seat is arranged on the inner hole wall of the circular ring, the inner hole of the valve seat is connected with the first annular chamber, the lower end surface of the valve disc is provided with a sealing surface which cooperates with the valve seat, and a guide ring which cooperates with the inner hole wall of the valve seat is fixedly connected to the center of the lower end surface of the valve disc, the adjusting screw is threadedly installed in the screw hole on the circular ring, the screw hole is concentric with the inner hole of the valve seat, the lower end of the adjusting screw is top-mounted on the upper end surface of the spring seat, the spring is installed between the lower end surface of the spring seat and the upper end surface of the valve disc, and a counterweight block is fixedly connected to the outer ring surface of the circular ring directly below the valve seat, the counterweight block is a cylindrical structure, and a steel ball is installed between the center of the bottom surface of the cylinder and the outer cavity wall of the second annular chamber.

[0005] Preferably, an adjustment ring is provided between the cylinder and the inner cavity wall of the second annular cavity, the adjustment ring is connected to the outer cavity thread of the cylinder through internal threads, and the upper end of the adjustment ring contacts the inner cavity wall of the second annular cavity.

[0006] Preferably, the right valve body is provided with a right first annular cavity and a right second annular cavity at positions corresponding to those of the left valve body.

[0007] Preferably, outer O-rings for dynamic sealing with the annular end faces on both sides of the circular ring are respectively provided on the right valve body and the left valve body between the first annular cavity and the second annular cavity, and inner O-rings for dynamic sealing with the annular end faces on both sides of the circular ring are respectively provided on the right valve body and the left valve body between the first annular cavity and the discharge cavity.

[0008] Compared with the prior art, the present invention has the following beneficial effects: the valve seat, valve disc and pressure setting device are installed on the circular ring, and can automatically rotate to a vertical position relative to the valve body under the action of the counterweight block, and can be directly installed at a 360° position on a horizontal pipeline, which is simple and convenient to install and has low installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0010] like Figure 1The multi-angle installation safety valve shown in the figure comprises: a valve body, a valve seat, a valve disc 19 and a pressure setting device, the pressure setting device is composed of a spring 11, an adjusting screw 14 and a spring seat 13; it is characterized in that: the valve body is composed of a left valve body 1 and a right valve body 17, the left valve body 1 and the right valve body 17 are connected in a sealed manner by bolts, the left valve body 1 is provided with an inlet channel 10, the right valve body 17 is provided with an outlet channel 18, the inlet channel 10 and the outlet channel 18 are on the same horizontal line, suitable for installation on a horizontal pipeline, the left valve body 1 is radially and concentrically arranged with a discharge chamber 12, a first annular chamber 7, a second annular chamber 16 in sequence from the center line of the inlet channel 10, and the discharge chamber 12 adopts a circular hole made at the center of the plane facing the left valve body 1 and the right valve body 17, the first annular cavity 7 is located radially outside the circular hole, the second annular cavity 16 is located radially outside the first annular cavity 7, the first annular cavity 7 is connected with the inlet channel 10 through the connecting hole 9, and the medium pressure of the inlet channel 10 is introduced into the first annular cavity 7, the right valve body 17 is provided with a right discharge cavity connected with the outlet channel 18 at a relative position, and the right discharge cavity and the discharge cavity 12 form an integral discharge cavity; a circular ring 5 is installed between the left valve body 1 and the right valve body 17, the inner hole center of the circular ring 5 is concentric with the discharge cavity 12, the inner hole diameter is equal to the diameter of the discharge cavity 12, and the outer The diameter of the annular surface is larger than the diameter of the inner wall of the second annular cavity 16. The annular end faces on both sides of the circular ring 5 are dynamically sealed and installed between the left valve body 1 and the right valve body 17 to seal and isolate the discharge cavity 12, the first annular cavity 7, and the second annular cavity 16. A valve seat is arranged on the inner hole wall of the circular ring 5. The inner hole 6 of the valve seat is connected with the first annular cavity 7. The lower end surface of the valve disc 19 is provided with a sealing surface that cooperates with the valve seat. A guide ring 8 that cooperates with the inner wall guide of the inner hole 6 of the valve seat is fixedly connected to the center of the lower end surface of the valve disc 19 to achieve the guiding positioning of the valve disc 19 moving up and down. The adjusting screw 14 is threadedly installed in the screw hole on the circular ring 5. The screw hole and the inner hole 6 of the valve seat are respectively located in the circular ring 5. The ring 5 is 180° in the circumferential direction, that is, the two are located at the two ends of the same diameter of the ring 5. The lower end of the adjusting screw 14 is mounted on the upper end surface of the spring seat 13. The spring 11 is installed between the lower end surface of the spring seat 13 and the upper end surface of the valve disc 19. The counterweight 3 is fixedly connected to the outer ring surface of the ring 5 directly below the valve seat. The gravity of the counterweight 3 is used to rotate the ring 5, and the center line of the valve seat inner hole 6 and the valve disc 19 is kept in the vertical direction. The counterweight 3 is a cylindrical structure, and a steel ball 2 is installed between the center of the bottom surface of the cylinder and the outer cavity wall of the second annular cavity 16 to reduce the friction of the counterweight 3 when rotating, and increase the flexibility of the counterweight 3 to drive the ring 5 to rotate automatically. The valve body is installed on a horizontal pipeline, which can automatically adjust the verticality of the valve disc 19 and the center line of the valve seat inner hole 6. The installation operation is simple and convenient, and the installation cost is low.

[0011] An adjustment ring 4 is arranged between the counterweight 3 and the inner wall of the second annular cavity 16. The adjustment ring 4 is connected to the cylindrical outer thread of the counterweight 3 through an internal thread. The upper end of the adjustment ring 4 contacts the inner wall of the second annular cavity 16 to prevent the ring 5 and the counterweight 3 from moving up and down.

[0012] The right valve body 17 is provided with a right first annular cavity and a right second annular cavity at the corresponding position of the left valve body 1. The right first annular cavity is docked with the first annular cavity 7 to form a closed annular cavity, and the right second annular cavity is docked with the second annular cavity 16 to form a closed annular cavity.

[0013] External O-rings 15 for dynamic sealing with the annular end surfaces on both sides of the ring 5 are respectively provided on the right valve body 17 and the left valve body 1 between the first annular cavity 7 and the second annular cavity 16, and internal O-rings 20 for dynamic sealing with the annular end surfaces on both sides of the ring 5 are respectively provided on the right valve body 17 and the left valve body 1 between the first annular cavity 7 and the discharge cavity 12.

Claims

1. A multi-angle mounted safety valve, comprising: A valve body, a valve seat, a valve disc (19) and a pressure setting device, wherein the pressure setting device is composed of a spring (11), an adjusting screw (14) and a spring seat (13); the valve body is composed of a left valve body (1) and a right valve body (17), the left valve body (1) is provided with an inlet channel (10), the right valve body (17) is provided with an outlet channel (18), the inlet channel (10) and the outlet channel (18) are on the same horizontal line, and the left valve body (1) is provided with a pressure regulating device. ) are radially and concentrically arranged in sequence along the center line of the left valve body (1), a discharge chamber (12), a first annular chamber (7), and a second annular chamber (16); the first annular chamber (7) is connected to the inlet passage (10) through a connecting hole (9); the right valve body (17) is provided with a right discharge chamber connected to the outlet passage (18) at a relative position; a circular ring (5) is installed between the left valve body (1) and the right valve body (17); the inner hole center of the circular ring (5) is concentric with the discharge chamber (12); and circular rings (5) are provided on both sides of the circular ring (5). The end face dynamic seal is installed between the left valve body (1) and the right valve body (17); a valve seat is arranged on the inner hole wall of the circular ring (5); the inner hole (6) of the valve seat is communicated with the first annular cavity (7); a sealing surface that cooperates with the valve seat is formed on the lower end face of the valve disc (19); a guide ring (8) that cooperates with the inner wall of the inner hole (6) of the valve seat is fixedly connected to the center of the lower end face of the valve disc (19); an adjusting screw (14) is threadedly installed in a screw hole on the circular ring (5); the screw hole is in contact with the valve seat. The inner hole (6) of the seat is located at a position 180° in the circumferential direction of the circular ring (5); the lower end of the adjusting screw (14) is mounted on the upper end surface of the spring seat (13); the spring (11) is installed between the lower end surface of the spring seat (13) and the upper end surface of the valve disc (19); a counterweight (3) is fixedly connected to the outer ring surface of the circular ring (5) directly below the valve seat; the counterweight (3) is a cylindrical structure, and a steel ball (2) is installed between the center of the bottom surface of the cylinder and the outer cavity wall of the second annular cavity (16).

2. The multi-angle installation safety valve according to claim 1, characterized in that: An adjustment ring (4) is provided between the counterweight (3) and the inner wall of the second annular cavity (16). The adjustment ring (4) is connected to the cylindrical outer thread of the counterweight (3) through an inner thread, and the upper end of the adjustment ring (4) contacts the inner wall of the second annular cavity (16).

3. The multi-angle installation safety valve according to claim 1 or 2, characterized in that: The right valve body (17) is provided with a right first annular cavity and a right second annular cavity at corresponding positions of the left valve body (1).

4. The multi-angle installation safety valve according to claim 3 is characterized in that: External O-rings (15) for dynamically sealing with the annular end surfaces on both sides of the circular ring (5) are provided on the right valve body (17) and the left valve body (1) between the first annular cavity (7) and the second annular cavity (16), respectively. Internal O-rings (20) for dynamically sealing with the annular end surfaces on both sides of the circular ring (5) are provided on the right valve body (17) and the left valve body (1) between the first annular cavity (7) and the discharge cavity (12), respectively.

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