Safety valve with pressure detection device

Abstract

The utility model relates to the technical field of safety valves, in particular to a safety valve with a pressure detection device, which comprises a safety valve and a pressure gauge, a spring plate is fixed on the inner wall of a pressure gauge mounting seat, a spring is fixed at the top end of the spring plate, a sealing plate is fixed at the top end of the spring, and a pushing plate is fixed at the bottom end of the pressure gauge; the safety valve has the beneficial effects that when the pressure gauge is mounted on the safety valve, the pressure gauge is inserted into a screw hole formed in the surface of the pressure gauge mounting seat through threaded connection, at the moment, the pushing plate abuts against the surface of the sealing plate, and the spring is in a state of being compressed by the spring plate and the sealing plate; when the pressure gauge is dismounted, the sealing plate moves upwards and abuts against the opening in the bottom end of the screw hole to seal the screw hole, fluid in the safety valve can be prevented from leaking to the outside from the screw hole, and therefore the purpose that the safety valve still supplies the fluid normally after the pressure gauge is dismounted is achieved.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically a safety valve equipped with a pressure detection device. Background Technology

[0002] A safety valve is a special valve that is normally closed when its opening and closing parts are subjected to external force. When the pressure of the medium in the equipment or pipeline rises above the specified value, it discharges the medium to the outside of the system to prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value. In order to detect the pressure inside the equipment, a pressure detection device is usually installed on the safety valve. A pressure gauge is a very common pressure detection device that can be installed on a safety valve.

[0003] In the existing technology, the method of installing a pressure gauge on a safety valve usually involves a pressure gauge mounting base pre-installed on the safety valve. The inner wall of the pressure gauge mounting base is threaded, and a hollow stud is pre-installed at the bottom of the pressure gauge. The hollow stud of the pressure gauge is screwed into the pressure gauge mounting base to install the pressure gauge and the safety valve. This installation method is simple to operate and is widely used.

[0004] However, in the existing technology of installing pressure gauges on safety valves, when the pressure gauge needs to be removed for maintenance, the pressure gauge mounting bracket will connect the valve body to the external environment. At this time, in order to prevent fluid leakage in the valve body, the valve body must be closed, so that the fluid supply is cut off during the pressure gauge maintenance period. Utility Model Content

[0005] The purpose of this invention is to provide a safety valve equipped with a pressure detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safety valve with a pressure detection device, comprising: a safety valve and a pressure gauge, a pressure gauge mounting base fixed on the surface of the safety valve, a screw hole opened on the surface of the pressure gauge mounting base, the pressure gauge being movably installed in the screw hole via a threaded connection, a spring plate fixed on the inner wall of the pressure gauge mounting base, a spring fixed at the top of the spring plate, a sealing plate fixed at the top of the spring, and a push plate fixed at the bottom of the pressure gauge.

[0007] Preferably, both the sealing plate and the spring plate are circular plate structures, and the diameter of the sealing plate is larger than the diameter of the screw hole.

[0008] Preferably, the top of the sealing plate is provided with a sealing groove, which is an annular groove, and a sealing ring is fixed in the sealing groove.

[0009] Preferably, a guide rod hole is formed on the surface of the spring plate. The guide rod hole is rectangular and a guide rod is movably inserted into the guide rod hole. The top end of the guide rod is fixed to the bottom end of the sealing plate, and the guide rod is rectangular.

[0010] Preferably, a number of support seats are fixed between the bottom end of the pressure gauge and the top end of the push plate, and the number of support seats are circumferentially distributed about the push plate.

[0011] Preferably, a number of mounting plates are fixed between the side wall of the spring plate and the inner wall of the pressure gauge mounting base, and the number of mounting plates are circumferentially distributed about the spring plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The safety valve with a pressure detection device proposed in this utility model, when the pressure gauge is installed on the safety valve, is inserted into the screw hole on the surface of the pressure gauge mounting base through a threaded connection. At this time, the push plate abuts against the surface of the sealing plate, and the spring is in a compressed state by the spring plate and the sealing plate. When it is necessary to remove the pressure gauge, under the pushing force of the spring, the sealing plate moves upward and abuts against the bottom opening of the screw hole, sealing the screw hole. This can prevent the fluid in the safety valve from leaking to the outside through the screw hole, thereby achieving the purpose of allowing the safety valve to continue to supply fluid normally after the pressure gauge is removed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the present invention.

[0016] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Safety valve; 2. Pressure gauge mounting base; 3. Pressure gauge; 4. Screw hole; 5. Spring plate; 6. Guide rod hole; 7. Guide rod; 8. Sealing plate; 9. Push plate; 10. Support base; 11. Spring; 12. Sealing groove; 13. Sealing ring; 14. Mounting plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: Please refer to Figures 1 to 3This utility model provides a technical solution: a safety valve with a pressure detection device, comprising: a safety valve 1 and a pressure gauge 3. A pressure gauge mounting base 2 is fixed on the surface of the safety valve 1. A screw hole 4 is opened on the surface of the pressure gauge mounting base 2. The pressure gauge 3 is movably installed in the screw hole 4 through a threaded connection. A spring plate 5 is fixed on the inner wall of the pressure gauge mounting base 2. A spring 11 is fixed on the top of the spring plate 5. A sealing plate 8 is fixed on the top of the spring 11. A push plate 9 is fixed on the bottom of the pressure gauge 3. Both the sealing plate 8 and the spring plate 5 are circular plate structures. The diameter of the sealing plate 8 is larger than the diameter of the screw hole 4.

[0020] In actual use, when pressure gauge 3 is installed on safety valve 1, pressure gauge 3 is inserted into the screw hole 4 on the surface of pressure gauge mounting base 2 via a threaded connection. At this time, push plate 9 abuts against the surface of sealing plate 8, and spring 11 is compressed by spring plate 5 and sealing plate 8. When pressure gauge 3 needs to be removed, under the pushing force of spring 11, sealing plate 8 moves upward and abuts against the bottom opening of screw hole 4, sealing screw hole 4. This prevents fluid in safety valve 1 from leaking to the outside through screw hole 4, thus achieving the purpose of allowing safety valve 1 to continue supplying fluid normally after pressure gauge 3 is removed.

[0021] Example 2: Based on Example 1, in order to seal the gap between the bottom opening of the sealing plate 8 and the screw hole 4 after the pressure gauge 3 is removed, a sealing groove 12 is provided at the top of the sealing plate 8. The sealing groove 12 is an annular groove, and a sealing ring 13 is fixed in the sealing groove 12.

[0022] An annular sealing groove 12 is made at the top of the sealing plate 8, and a sealing ring 13 is fixed in the sealing groove 12. The sealing ring 13 is made of a highly elastic rubber material. When the sealing plate 8 is pressed against the bottom opening of the screw hole 4, the sealing ring 13 is pressed between the sealing plate 8 and the bottom opening of the screw hole 4, thereby sealing the gap between the sealing plate 8 and the bottom opening of the screw hole 4.

[0023] Example 3: Based on Example 2, in order to enable the sealing plate 8 to move only up and down, a guide rod hole 6 is provided on the surface of the spring plate 5. The guide rod hole 6 is a rectangular hole, and a guide rod 7 is movably inserted into the guide rod hole 6. The top end of the guide rod 7 is fixed to the bottom end of the sealing plate 8, and the guide rod 7 is a rectangular rod.

[0024] A guide rod 7 is fixed at the bottom of the sealing plate 8. The guide rod 7 is movably inserted into the guide rod hole 6 opened on the surface of the spring plate 5. Under the influence of the guide rod hole 6, the guide rod 7 can only move up and down, so that the sealing plate 8 can also only move up and down.

[0025] Example 4: Based on Example 3, in order to allow the fluid in the safety valve 1 to enter the pressure gauge 3 when the pressure gauge 3 is installed in the screw hole 4, several sets of support seats 10 are fixed between the bottom end of the pressure gauge 3 and the top end of the push plate 9. The several sets of support seats 10 are circumferentially distributed about the push plate 9. Several sets of mounting plates 14 are fixed between the side wall of the spring plate 5 and the inner wall of the pressure gauge mounting base 2. The several sets of mounting plates 14 are circumferentially distributed about the spring plate 5.

[0026] Several sets of support seats 10 are fixed between the pressure gauge 3 and the push plate 9, so that the push plate 9 is fixed to the bottom of the pressure gauge 3 while leaving a gap between it and the bottom of the pressure gauge 3. Similarly, several sets of mounting plates 14 are fixed between the inner wall of the pressure gauge mounting seat 2 and the spring plate 5, so that the spring plate 5 is fixed to the inner wall of the pressure gauge mounting seat 2 while leaving a gap between it and the inner wall of the pressure gauge mounting seat 2. When the pressure gauge 3 is installed in the screw hole 4, the fluid in the safety valve 1 can enter the pressure gauge 3 through the gap between the inner wall of the pressure gauge mounting seat 2 and the spring plate 5 and the gap between the bottom of the pressure gauge 3 and the push plate 9.

[0027] In actual use, when pressure gauge 3 is installed on safety valve 1, pressure gauge 3 is threaded into the screw hole 4 on the surface of pressure gauge mounting base 2. At this time, push plate 9 abuts against the surface of sealing plate 8, and spring 11 is compressed by spring plate 5 and sealing plate 8. When pressure gauge 3 needs to be removed, under the pushing force of spring 11, sealing plate 8 moves upward and abuts against the bottom opening of screw hole 4, sealing screw hole 4, thus preventing fluid in safety valve 1 from leaking to the outside through screw hole 4, thereby achieving the purpose of allowing safety valve 1 to continue to supply fluid normally after pressure gauge 3 is removed. An annular sealing groove 12 is opened at the top of sealing plate 8, and sealing ring 13 is fixed in sealing groove 12. Sealing ring 13 is made of highly elastic rubber material. When sealing plate 8 abuts against the bottom opening of screw hole 4, sealing ring 13 is pressed between sealing plate 8 and bottom opening of screw hole 4, thereby achieving the sealing between sealing plate 8 and bottom opening of screw hole 4. The gap between the bottom openings of the screw hole 4 is sealed; a guide rod 7 is fixed at the bottom of the sealing plate 8, and the guide rod 7 is movably inserted into the guide rod hole 6 opened on the surface of the spring plate 5. Under the influence of the guide rod hole 6, the guide rod 7 can only move up and down, so that the sealing plate 8 can also only move up and down; several sets of support seats 10 are fixed between the pressure gauge 3 and the push plate 9, so that the push plate 9 is fixed at the bottom of the pressure gauge 3 while leaving a gap between it and the bottom of the pressure gauge 3. Similarly, several sets of mounting plates 14 are fixed between the inner wall of the pressure gauge mounting seat 2 and the spring plate 5, so that the spring plate 5 is fixed on the inner wall of the pressure gauge mounting seat 2 while leaving a gap between it and the inner wall of the pressure gauge mounting seat 2. When the pressure gauge 3 is installed in the screw hole 4, the fluid in the safety valve 1 can enter the pressure gauge 3 through the gap between the inner wall of the pressure gauge mounting seat 2 and the spring plate 5 and the gap between the bottom of the pressure gauge 3 and the push plate 9.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety valve equipped with a pressure detection device, comprising: A safety valve (1) and a pressure gauge (3) are provided. A pressure gauge mounting base (2) is fixed on the surface of the safety valve (1). A screw hole (4) is provided on the surface of the pressure gauge mounting base (2). The pressure gauge (3) is movably installed in the screw hole (4) by a threaded connection. The pressure gauge mounting base (2) is characterized by having a spring plate (5) fixed on the inner wall of the pressure gauge mounting base (2). A spring (11) is fixed at the top of the spring plate (5). A sealing plate (8) is fixed at the top of the spring (11). A push plate (9) is fixed at the bottom of the pressure gauge (3).

2. A safety valve with a pressure detection device according to claim 1, characterized in that: Both the sealing plate (8) and the spring plate (5) are circular plate structures, and the diameter of the sealing plate (8) is larger than the diameter of the screw hole (4).

3. A safety valve with a pressure detection device according to claim 1, characterized in that: The top of the sealing plate (8) is provided with a sealing groove (12), which is an annular groove, and a sealing ring (13) is fixed in the sealing groove (12).

4. A safety valve with a pressure detection device according to claim 1, characterized in that: The spring plate (5) has a guide rod hole (6) on its surface. The guide rod hole (6) is rectangular. A guide rod (7) is movably inserted into the guide rod hole (6). The top end of the guide rod (7) is fixed to the bottom end of the sealing plate (8). The guide rod (7) is rectangular.

5. A safety valve with a pressure detection device according to claim 1, characterized in that: Several sets of support seats (10) are fixed between the bottom end of the pressure gauge (3) and the top end of the push plate (9), and the several sets of support seats (10) are distributed in a circle about the push plate (9).

6. A safety valve with a pressure detection device according to claim 1, characterized in that: Several sets of mounting plates (14) are fixed between the side wall of the spring plate (5) and the inner wall of the pressure gauge mounting base (2), and the several sets of mounting plates (14) are circumferentially distributed about the spring plate (5).

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