Safety valve discharge device combination without discharge recoil

Abstract

The utility model discloses a safety valve discharge device combination without discharge recoil. The safety valve discharge device combination comprises a safety valve and a discharge pipeline, the safety valve body is arranged at the lower end of the safety valve, an outlet flange is arranged on one side of the safety valve body, an inlet flange is arranged at the bottom of the safety valve body, and the lower end of the discharge pipeline is hermetically connected with the inlet flange through a bolt; the double-elbow discharge outlet is formed in the upper end of the discharge pipeline, the double-elbow discharge outlet and the discharge pipeline are welded and fixed, the double-elbow discharge outlet is composed of two opposite discharge pipes, the two discharge pipes are symmetrically distributed with the circle center of the top end of the discharge pipeline as the original point, the ends, close to the discharge pipeline, of the double-elbow discharge outlet are communicated with each other, and the ends, close to the discharge pipeline, of the double-elbow discharge outlet are communicated with each other. And the joint is of an arc-shaped structure, so that the situation that an outlet pipeline or the root of the safety valve is torn due to recoil when the safety valve suddenly jumps, and accidents are caused can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a safety valve discharge device combination without discharge recoil. Background Art

[0002] In chemical plants, safety valves are usually installed on pipelines or equipment due to safety requirements of production plants. Their function is to protect the pipelines or equipment in the production plants from sudden overpressure during operation. They are safety devices that can automatically release pressure through the compression of their own springs. The outlet of the safety valve can be directly discharged into the atmosphere or discharged into the flare system for combustion or recovery, depending on the nature of the discharge medium (flammable or non-flammable, toxic or non-toxic, explosive or non-explosive). For venting that can be directly discharged into the atmosphere (such as air, nitrogen or steam), the discharge port is usually led to a safer place at a high point for high-point discharge. It is usually difficult to fix the pipeline at a high place, and an elbow is usually added at the end of the pipeline to prevent rainfall or foreign objects from falling into the discharge pipe from affecting the discharge pipe mouth.

[0003] However, this method also has a disadvantage. When the safety valve is discharged, a large amount of gas is suddenly discharged from the outlet, and the elbow at the end of the pipe causes the gas flow to suddenly turn. The recoil force when the safety valve is released will cause the discharge pipe mouth to shake violently, and even cause the pipe to break or the root of the safety valve to tear, which poses a great safety hazard. Therefore, it does not meet existing needs. In this regard, we propose a safety valve discharge device combination without discharge recoil. Utility Model Content

[0004] The utility model aims to provide a safety valve discharge device combination without discharge recoil force, so as to solve the problem proposed in the above background technology that the recoil force of the safety valve when it suddenly jumps causes the safety valve outlet pipe or the safety valve root to tear and cause accidents.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety valve discharge device combination without discharge recoil, comprising a safety valve and a discharge pipeline;

[0006] Also includes:

[0007] A safety valve body, which is arranged at the lower end of the safety valve, an outlet flange is arranged on one side of the safety valve body, and the outlet flange and the safety valve body are formed integrally, an inlet flange is arranged at the bottom of the safety valve body, and the inlet flange and the safety valve body are formed integrally, and the lower end of the discharge pipe is sealed and connected to the inlet flange by bolts;

[0008] A double-elbow discharge port is arranged at the upper end of the discharge pipe and is welded and fixed to the discharge pipe. The double-elbow discharge port is composed of two opposite discharge pipes and is symmetrically distributed with the top center of the discharge pipe as the origin. The double-elbow discharge port is connected to each other near one end of the discharge pipe, and the connection is an arc-shaped structure.

[0009] Preferably, a valve seat is provided inside the safety valve body, a valve cover is installed above the valve seat, and the valve cover and the valve seat are fixed by bolts, a valve cap is installed on the top of the valve cover, a valve flap is installed at the sealing port of the valve seat, a valve stem extending to the inside of the valve cover is fixedly installed on the upper end of the valve flap, and a spring is installed on the outer wall of the valve stem at one end inside the valve cover.

[0010] Preferably, the inner diameter of the outlet flange is larger than the inner diameter of the inlet flange.

[0011] Preferably, one end of the discharge pipe close to the outlet flange is in an arc-shaped bending structure.

[0012] Preferably, a bracket is installed outside the discharge pipe, and the bracket and the discharge pipe are fixed by bolts.

[0013] Preferably, the flow area of ​​the double elbow discharge port is twice that of the discharge pipe.

[0014] Preferably, a discharge hole is provided at the lowest point of the bottom elbow of the discharge pipe, and the diameter of the discharge hole is six millimeters.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model adopts a double elbow discharge port. The discharge pipe of the conventional safety valve outlet pipe is discharged from one side, and the discharge pipe needs to be led to a higher and farther place, and it is not very convenient to fix it. Therefore, there are certain safety hazards in each discharge process of the safety valve, and even cause the discharge pipe to vibrate violently. In severe cases, the root of the safety valve may be torn. By improving the single-sided discharge of the discharge pipe to two-way discharge, while doubling the discharge area, because the discharged gas or steam is naturally divided into two directions, and the two directions are exactly opposite, the original discharge force just cancels each other out, and because the discharge area is doubled, the pressure reaching the discharge end becomes lower, so that the safety of the discharge is fundamentally improved compared with the original, so that the hidden danger of the reaction force after the safety valve jumps is also fundamentally eliminated, which can effectively alleviate, reduce and eliminate the phenomenon, so that the discharge safety of the safety valve is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure after transformation of the utility model;

[0019] Figure 3 This is a schematic diagram of the lower end structure of the discharge pipe of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the utility model before transformation.

[0021] In the figure: 1. Safety valve body; 2. Valve seat; 3. Valve disc; 4. Valve stem; 5. Spring; 6. Valve cover; 7. Valve bonnet; 8. Outlet flange; 9. Inlet flange; 10. Discharge pipe; 11. Bracket; 12. Double elbow discharge port; 13. Discharge hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4 , the utility model provides an embodiment: a safety valve discharge device combination without discharge recoil, including a safety valve and a discharge pipeline 10;

[0024] Also includes:

[0025] A safety valve body 1 is arranged at the lower end of the safety valve, an outlet flange 8 is arranged on one side of the safety valve body 1, and the outlet flange 8 is formed integrally with the safety valve body 1, an inlet flange 9 is arranged at the bottom of the safety valve body 1, and the inlet flange 9 is formed integrally with the safety valve body 1, and the lower end of the discharge pipe 10 is sealed and connected to the inlet flange 9 by bolts;

[0026] The double elbow discharge port 12 is arranged at the upper end of the discharge pipe 10, and the double elbow discharge port 12 is welded and fixed to the discharge pipe 10. The double elbow discharge port 12 is composed of two opposite discharge pipes and is symmetrically distributed with the top center of the discharge pipe 10 as the origin. The double elbow discharge port 12 is connected to each other near one end of the discharge pipe 10, and the connection is an arc structure.

[0027] When in use, steam or gas is guided by the discharge pipe 10 to reach the double elbow discharge port 12. The double elbow discharge port has two opposite directions and a flow area twice as large as that of the discharge pipe 10. After the steam or gas reaches here, it is discharged in two directions respectively, which are opposite to each other. The discharge forces cancel each other out, and the discharge pressure is also reduced due to the increase in the discharge area, which effectively improves the reverse force exerted by the original single-sided discharge elbow on the discharge pipe and ensures the safety of the discharge pipe.

[0028] See also Figure 2 A valve seat 2 is arranged inside the safety valve body 1, a valve cover 6 is installed above the valve seat 2, and the valve cover 6 and the valve seat 2 are fixed by bolts, a valve cap 7 is installed on the top of the valve cover 6, a valve disc 3 is installed at the sealing port of the valve seat 2, a valve stem 4 extending to the inside of the valve cover 6 is fixedly installed on the upper end of the valve disc 3, a spring 5 is installed on the outer wall of the valve stem 4 located at one end of the inside of the valve cover 6, and the exhaust gas enters from the safety valve inlet flange 9. When the gas pressure on the inlet flange side gradually increases, and the pressure increase exceeds the tensioning force of the safety valve spring 5, the spring 5 is compressed, the valve disc 3 is separated from the valve seat 2, and moves along the direction of the valve stem 4, and the overpressure gas is discharged through the valve seat 2 to the outlet flange 8.

[0029] See also Figure 2 The inner diameter of the outlet flange 8 is larger than the inner diameter of the inlet flange 9, and the overpressure gas is discharged from the outlet flange 8. Because the outlet flange 8 is one order of magnitude larger than the inlet flange 9, the pressure of the gas is expanded and the pressure is slightly lower than the pressure at the inlet flange 9.

[0030] See also Figure 1 and Figure 2 A bracket 11 is installed on the outside of the discharge pipe 10, and the bracket 11 is fixed to the discharge pipe 10 by bolts, thereby improving the installation stability of the discharge pipe 10.

[0031] See also Figure 2 and Figure 3 A discharge hole 13 is provided at the lowest point of the bottom elbow of the discharge pipe 10, and the diameter of the discharge hole 13 is six millimeters to prevent the condensation of droplets produced by steam or gas after discharge and the accumulation of droplets at the low point of the elbow, thereby affecting the use effect of the safety valve.

[0032] Working principle: When in use, the single-sided discharge of the discharge pipe 10 is improved to two-way discharge. While the discharge area is doubled, because the discharged gas or steam is naturally divided into two directions, and the two directions are exactly opposite, the original discharge forces just cancel each other out. And because the discharge area is doubled, the pressure reaching the discharge end becomes lower, so that the safety of the discharge is fundamentally improved compared with the original, and the hidden danger of the reaction force after the safety valve jumps is also fundamentally eliminated.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A safety valve discharge device assembly without discharge recoil, comprising a safety valve and a discharge pipe (10); Features: Also includes: A safety valve body (1) is arranged at the lower end of the safety valve, an outlet flange (8) is arranged on one side of the safety valve body (1), and the outlet flange (8) and the safety valve body (1) are integrally formed, an inlet flange (9) is arranged at the bottom of the safety valve body (1), and the inlet flange (9) and the safety valve body (1) are integrally formed, and the lower end of the discharge pipe (10) is sealed and connected to the inlet flange (9) by bolts; A double elbow discharge port (12) is arranged at the upper end of the discharge pipe (10), and the double elbow discharge port (12) is welded and fixed to the discharge pipe (10). The double elbow discharge port (12) is composed of two discharge pipes that are opposite to each other and are symmetrically distributed with the top center of the discharge pipe (10) as the origin. The double elbow discharge ports (12) are connected to each other at one end close to the discharge pipe (10), and the connection is in an arc-shaped structure.

2. A safety valve discharge device assembly without discharge recoil according to claim 1, characterized in that: A valve seat (2) is arranged inside the safety valve body (1), a valve cover (6) is installed above the valve seat (2), and the valve cover (6) and the valve seat (2) are fixed by bolts, a valve cap (7) is installed on the top of the valve cover (6), a valve flap (3) is installed at the sealing opening of the valve seat (2), a valve stem (4) extending into the interior of the valve cover (6) is fixedly installed at the upper end of the valve flap (3), and a spring (5) is installed on the outer wall of the valve stem (4) at one end inside the valve cover (6).

3. A safety valve discharge device assembly without discharge recoil according to claim 1, characterized in that: The inner diameter of the outlet flange (8) is greater than the inner diameter of the inlet flange (9).

4. A safety valve discharge device assembly without discharge recoil according to claim 1, characterized in that: One end of the discharge pipe (10) close to the outlet flange (8) is in an arc-shaped bent structure.

5. A safety valve discharge device assembly without discharge recoil according to claim 1, characterized in that: A bracket (11) is installed outside the discharge pipe (10), and the bracket (11) and the discharge pipe (10) are fixed by bolts.

6. A safety valve discharge device assembly without discharge recoil according to claim 1, characterized in that: The flow area of ​​the double elbow discharge port (12) is twice that of the discharge pipe (10).

7. A safety valve discharge device assembly without discharge recoil according to claim 4, characterized in that: A discharge hole (13) is provided at the lowest point of the bottom elbow of the discharge pipe (10), and the diameter of the discharge hole (13) is six millimeters.

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