CN223063169U - Novel pilot operated relief valve - Google Patents
Novel pilot operated relief valve Download PDFInfo
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- CN223063169U CN223063169U CN202422596417.0U CN202422596417U CN223063169U CN 223063169 U CN223063169 U CN 223063169U CN 202422596417 U CN202422596417 U CN 202422596417U CN 223063169 U CN223063169 U CN 223063169U
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Abstract
本实用新型涉及先导式安全阀技术领域，具体为一种新型先导式安全阀，包括主阀体，在所述主阀体的上端设置有阀盖，在所述阀盖的上端设置有防护罩一，所述防护罩一、阀盖与主阀体之间设置有开闭机构一；在主阀体的右侧外部设置有导阀体一，在所述导阀体一的上端设置有导阀体二。本实用新型工作时，流体从进口进入，然后通过导向管输入导阀体一与导阀体二中，这时流体顶升活塞二并压缩弹簧二，流体经过进气管进入阀盖中，并下压活塞一，活塞一直线下降后带动阀杆二和阀杆一同步下降，阀杆一压缩弹簧一，阀杆二驱动阀瓣下降，使得进口与出口之间的通路开放，迅速泄压，并且由于阀瓣向下开启，可以提高密封性，防止泄漏。
The utility model relates to the technical field of pilot-operated safety valves, specifically a new type of pilot-operated safety valve, including a main valve body, a valve cover is arranged at the upper end of the main valve body, a protective cover 1 is arranged at the upper end of the valve cover, and an opening and closing mechanism 1 is arranged between the protective cover 1, the valve cover and the main valve body; a pilot valve body 1 is arranged on the right side of the main valve body, and a pilot valve body 2 is arranged at the upper end of the pilot valve body 1. When the utility model is working, the fluid enters from the inlet, and then enters the pilot valve body 1 and the pilot valve body 2 through the guide pipe. At this time, the fluid lifts the piston 2 and compresses the spring 2. The fluid enters the valve cover through the intake pipe and presses down the piston 1. After the piston drops in a straight line, it drives the valve stem 2 and the valve stem 1 to drop synchronously. The valve stem 1 compresses the spring 1, and the valve stem 2 drives the valve disc to drop, so that the passage between the inlet and the outlet is opened, and the pressure is quickly released. In addition, since the valve disc opens downward, the sealing performance can be improved to prevent leakage.
Description
Technical Field
The utility model relates to the technical field of pilot-operated safety valves, in particular to a novel pilot-operated safety valve.
Background
The pilot operated safety valve is a safety device for protecting pressure vessels and piping systems, and is mainly used to prevent the pressure in the system from exceeding a set safety value. The working principle of the hydraulic pressure control valve is that a pilot valve controls the opening and closing of a main valve, so that more accurate pressure regulation and protection are realized.
Currently, existing pilot operated safety valves have insufficient flexibility in use, for example, many existing pilot operated safety valves have poor flexibility in design for large bore fluids, resulting in reduced efficiency in large bore applications.
Disclosure of utility model
The utility model aims to provide a novel pilot-operated safety valve so as to solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
A novel pilot operated relief valve comprises
The valve comprises a main valve body, wherein a valve cover is arranged at the upper end of the main valve body, a first protective cover is arranged at the upper end of the valve cover, and a first opening and closing mechanism is arranged between the first protective cover, the valve cover and the main valve body;
The valve is characterized in that a first pilot valve body is arranged outside the right side of the main valve body, a second pilot valve body is arranged at the upper end of the first pilot valve body, a second protective cover is arranged at the upper end of the second pilot valve body, and a second opening and closing mechanism is arranged among the second pilot valve body, the first pilot valve body and the second protective cover.
Preferably, an inlet is further arranged below the main valve body, an outlet is arranged on the left side of the main valve body, and one end, far away from the outlet, of the main valve body is communicated with the lower end of the first pilot valve body through a guide pipe;
Preferably, the first opening and closing mechanism comprises a second valve rod, the second valve rod is movably arranged in the middle of the inner side of the main valve body, a valve clack is arranged at the upper end of the bottom end of the second valve rod, which is positioned in the inlet, and the first valve rod is movably arranged on the inner side of the first protective cover through a first spring;
Preferably, the first opening and closing mechanism further comprises a first piston, the first piston is movably arranged between the main valve body and the inside of the valve cover, the bottom end of the first valve rod penetrates through the valve cover to be fixedly connected with the first piston, and the top end of the second valve rod penetrates through the main valve body to be fixedly connected with the first piston;
Preferably, the second opening and closing mechanism comprises a second piston, the second piston is movably arranged between the second pilot valve body and the first pilot valve body, a third valve rod is arranged at the top end of the second piston, the top end of the third valve rod penetrates through the protective cover and is positioned in the second protective cover, a second spring which is connected with the third valve rod in a three-phase manner is arranged below the second protective cover, the left end of the first pilot valve body is communicated with the air inlet end of the valve cover through an air inlet pipe, and an air outlet pipe is arranged at one end, far away from the air inlet pipe, of the second pilot valve body;
Preferably, a spanner is movably arranged outside the right side of the upper end of the second protective cover, a lifting frame is movably arranged inside the upper end of the second protective cover, the left side of the lifting frame is movably connected with the second protective cover through a rotating shaft, and the top end of the third valve rod is movably sleeved with the lifting frame.
Compared with the prior art, the utility model has the beneficial effects that:
according to the novel pilot-operated safety valve, fluid enters from the inlet, then is input into the first pilot valve body and the second pilot valve body through the guide pipe, at the moment, the fluid lifts the second piston and compresses the second spring, the fluid enters the valve cover through the air inlet pipe and presses down the first piston, the first piston linearly descends to drive the second valve rod and the first valve rod to synchronously descend, the first valve rod compresses the first spring, the second valve rod drives the valve clack to descend, a passage between the inlet and the outlet is opened, pressure is relieved rapidly, and the valve clack is opened downwards, so that the sealing performance can be improved, and leakage is prevented.
According to the novel pilot-operated safety valve, after inlet pressure is reduced, the second spring control valve rod drives the third piston to descend, the passage between the air inlet pipe and the guide pipe is closed, the passage between the air inlet pipe and the air outlet pipe is simultaneously opened, the first spring lifts the first valve rod, the first valve rod lifts the first control piston to press fluid inside the valve cover into the air inlet pipe and then is discharged through the air outlet pipe, when the second piston needs to be manually lifted, a spanner is pulled up, the upper end of the spanner lifts the right side of the lifting frame, the third valve rod is lifted up when the right side of the lifting frame is lifted up, the second piston is pulled to lift up in a straight line when the third valve rod is lifted up, and the second spring is compressed, so that the passage between the guide pipe and the air inlet pipe is opened, and the novel pilot-operated safety valve can be manually operated under emergency conditions.
Drawings
FIG. 1 is a schematic diagram of the overall front view structure of the present utility model;
FIG. 2 is an enlarged schematic view of FIG. 1A according to the present utility model;
FIG. 3 is an enlarged schematic view of the utility model at B in FIG. 1;
Fig. 4 is an enlarged schematic view of fig. 1 at C in accordance with the present utility model.
The valve comprises a main valve body 1, a valve cover 2, a protective cover 3, a pilot valve body 4, a pilot valve body 5, a pilot valve body II, a protective cover 6, a protective cover II, a valve 7, an inlet 8, an outlet 9, a guide pipe 10, a valve rod II, a valve 11, a valve clack 12, a spring I, a valve rod 14, a piston I, a piston II, a valve rod 16, a valve rod III, a spring II, a valve rod 18, an air inlet pipe 19, an air outlet pipe 20, a spanner 21 and a lifting frame.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-4, the present utility model provides a technical solution:
The novel pilot-operated safety valve comprises a main valve body 1, wherein a valve cover 2 is arranged at the upper end of the main valve body 1, a first protective cover 3 is arranged at the upper end of the valve cover 2, a first opening and closing mechanism is arranged between the first protective cover 3 and the valve cover 2 and the main valve body 1, the first opening and closing mechanism comprises a second valve rod 10, the second valve rod 10 is movably arranged in the middle of the inner side of the main valve body 1, a valve clack 11 is arranged at the upper end of the inner part of an inlet 7 at the bottom end of the second valve rod 10, and a first valve rod 13 is movably arranged at the inner side of the first protective cover 3 through a first spring 12; the first opening and closing mechanism further comprises a first piston 14, the first piston 14 is movably arranged between the main valve body 1 and the interior of the valve cover 2, the bottom end of the first valve rod 13 penetrates through the valve cover 2 and is fixedly connected with the first piston 14, the top end of the second valve rod 10 penetrates through the main valve body 1 and is fixedly connected with the first piston 14, an inlet 7 is further arranged below the main valve body 1, an outlet 8 is arranged on the left side of the main valve body 1, one end of the main valve body 1 far away from the outlet 8 is communicated with the lower end of the first valve guide body 4 through a guide pipe 9, the first valve guide body 4 is arranged outside the right side of the main valve body 1, the upper end of the first valve guide body 4 is provided with a second pilot valve body 5, the upper end of the second valve guide body 5 is provided with a protective cover 6, an opening and closing mechanism second piston 15 is arranged between the first pilot valve body 4 and the protective cover 6, the second opening and closing mechanism 15 is movably arranged between the second valve body 5 and the interior of the first valve body 4, the top end of the second piston 15 is provided with a third valve rod 16, the top end of the third valve rod 16 penetrates through the second valve rod 6 and is positioned inside the protective cover second protective cover 6, the lower part of the protective cover 6 is provided with a third valve guide spring 16 connected with the second valve guide rod 17 through the left end of the first valve guide body 2 and is connected with the first valve cover 18 through the air inlet pipe 18, the second guide valve body 5 is far away from the air inlet pipe 18 an air outlet pipe 19 is arranged at one end of the air inlet pipe;
In this embodiment, fluid enters from the inlet 7, then enters the pilot valve body 1 and the pilot valve body 5 through the guide pipe 9, at this time, the fluid lifts the piston two 15 and compresses the spring two 17, the fluid enters the valve cover 2 through the air inlet pipe 18, and presses down the piston one 14, the piston one 14 moves down the valve rod two 10 and the valve rod one 13 synchronously, the valve rod one 13 compresses the spring one 12, the valve rod two 10 drives the valve clack 11 to descend, so that the passage between the inlet 7 and the outlet 8 is opened, pressure is released rapidly, and as the valve clack 11 opens downwards, the tightness can be improved, and leakage is prevented.
As shown in fig. 1 and 4, a spanner 20 is movably mounted outside the right side of the upper end of the second protective cover 6, a lifting frame 21 is movably mounted inside the upper end of the second protective cover 6, the left side of the lifting frame 21 is movably connected with the second protective cover 6 through a rotating shaft, and the top end of the third valve rod 16 is movably sleeved with the lifting frame 21;
In this embodiment, when the pressure of the inlet 7 is reduced, the third spring 17 controls the third valve rod 16 to drive the second piston 15 to descend, so as to close the passage between the air inlet pipe 18 and the guide pipe 9, and simultaneously open the passage between the air inlet pipe 18 and the air outlet pipe 19, and the first spring 12 lifts the first valve rod 13, the first valve rod 13 lifts the first piston 14 to press the fluid inside the valve cover 2 into the air inlet pipe 18 and then discharge the fluid through the air outlet pipe 19, when the second piston 15 needs to be lifted manually, the spanner 20 is pulled upwards, the upper end of the spanner 20 lifts the right side of the lifting frame 21, the third valve rod 16 is lifted upwards when the right side of the lifting frame 21 is lifted upwards, the second piston 15 is pulled to lift linearly when the third valve rod 16 is lifted, and the second spring 17 is compressed, so that the passage between the guide pipe 9 and the air inlet pipe 18 is opened, and thus the manual operation can be performed in emergency.
The working principle is that when the valve is operated, fluid enters from an inlet 7, then enters into a guide valve body 4 and a guide valve body 5 through a guide pipe 9, at the moment, the fluid lifts a piston II 15 and compresses a spring II 17, the fluid enters into a valve cover 2 through an air inlet pipe 18, the piston I14 is pressed down, the piston I14 is linearly lowered to drive a valve rod II 10 and a valve rod I13 to synchronously lower, the valve rod I13 compresses a spring I12, the valve rod II 10 drives a valve clack 11 to lower, a passage between the inlet 7 and an outlet 8 is opened and is rapidly depressurized, when the pressure of the inlet 7 is reduced, the spring II 17 controls the valve rod III 16 to drive the piston II 15 to lower, the passage between the air inlet pipe 18 and the guide pipe 9 is closed, the passage between the air inlet pipe 18 and an air outlet pipe 19 is simultaneously opened, the valve rod I12 is lifted, the valve rod I13 is lifted to control the piston I14 to press the fluid inside the air inlet pipe 18, and then the piston I19 is discharged, when the piston II 15 is required to be manually lifted, a spanner 20 is pulled up, the upper end of the spanner 20 lifts the right side of a frame 21, when the right side of the frame 21 is lifted up, the valve rod III 16 is lifted, the valve rod III is lifted, and the passage 9 is lifted, and the passage II is linearly lifted, and the guide pipe 9 is opened, and the passage is lifted.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A novel pilot-operated safety valve is characterized by comprising
A main valve body (1), a valve cover (2) is arranged at the upper end of the main valve body (1), a first protective cover (3) is arranged at the upper end of the valve cover (2), and a first opening and closing mechanism is arranged among the first protective cover (3), the valve cover (2) and the main valve body (1);
The right side outside at main valve body (1) is provided with guide valve body one (4) the upper end of guide valve body one (4) is provided with guide valve body two (5) the upper end of guide valve body two (5) is provided with protection casing two (6), be provided with closing mechanism two between guide valve body two (5), guide valve body one (4) and protection casing two (6).
2. The novel pilot-operated safety valve according to claim 1, wherein an inlet (7) is further arranged below the main valve body (1), an outlet (8) is arranged on the left side of the main valve body (1), and one end, far away from the outlet (8), of the main valve body (1) is communicated with the lower end of the pilot valve body I (4) through a guide pipe (9).
3. The novel pilot operated safety valve according to claim 2, wherein the first opening and closing mechanism comprises a second valve rod (10), the second valve rod (10) is movably mounted in the middle of the inner side of the main valve body (1), a valve clack (11) is arranged at the upper end of the inner part of the inlet (7) at the bottom end of the second valve rod (10), and a first valve rod (13) is movably mounted on the inner side of the first protective cover (3) through a first spring (12).
4. The novel pilot operated safety valve as set forth in claim 3, wherein said first opening and closing mechanism further comprises a first piston (14), said first piston (14) is movably mounted between said main valve body (1) and said inside of said valve cover (2), said first piston (14) is fixedly connected to said bottom end of said first valve rod (13) through said valve cover (2), and said top end of said second valve rod (10) is fixedly connected to said first piston (14) through said main valve body (1).
5. The novel pilot operated safety valve of claim 1, wherein the second opening and closing mechanism comprises a second piston (15), the second piston (15) is movably mounted between the second pilot valve body (5) and the first pilot valve body (4), a third valve rod (16) is arranged at the top end of the second piston (15), the top end of the third valve rod (16) penetrates through the second protective cover (6) and is positioned in the second protective cover (6), a second spring (17) connected with the third valve rod (16) is arranged below the second protective cover (6), the left end of the first pilot valve body (4) is communicated with the air inlet end of the valve cover (2) through an air inlet pipe (18), and an air outlet pipe (19) is arranged at one end, far away from the air inlet pipe (18), of the second pilot valve body (5).
6. The novel pilot operated safety valve of claim 5, wherein a wrench (20) is movably mounted outside the right side of the upper end of the second protective cover (6), a lifting frame (21) is movably mounted inside the upper end of the second protective cover (6), the left side of the lifting frame (21) is movably connected with the second protective cover (6) through a rotating shaft, and the top end of the third valve rod (16) is movably sleeved with the lifting frame (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422596417.0U CN223063169U (en) | 2024-10-28 | 2024-10-28 | Novel pilot operated relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422596417.0U CN223063169U (en) | 2024-10-28 | 2024-10-28 | Novel pilot operated relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223063169U true CN223063169U (en) | 2025-07-04 |
Family
ID=96211589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422596417.0U Active CN223063169U (en) | 2024-10-28 | 2024-10-28 | Novel pilot operated relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223063169U (en) |
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2024
- 2024-10-28 CN CN202422596417.0U patent/CN223063169U/en active Active
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