Pressure relief butterfly-shaped seal head for pressure vessel
By designing automatic pressure relief components and backup release components in the pressure relief butterfly head, combined with real-time monitoring of the electronic pressure gauge, the problem of poor sealing effect of the existing pressure relief butterfly head is solved and higher sealing performance is achieved. and reliability, reducing downtime and economic losses.
Patent Information
- Application Number
- CN202420749521.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The existing pressure relief butterfly sealing effect is poor, and leaks are prone to occur after long-term use, resulting in long downtime and economic losses.
A pressure relief butterfly head including a butterfly head body, a pressure relief component, a backup release component and an electronic pressure gauge is designed. The pressure relief component realizes automatic pressure relief through the pressure relief tube, pressure relief outer cylinder, sliding plate and pressure relief inner cylinder, and provides dual pressure relief functions through the backup release component. The electronic pressure gauge monitors the air pressure inside the pressure vessel in real time.
It improves the sealing and reliability of the release butterfly head, reducing the maintenance and stopping time and economic losses, and enhancing the reliability and security of the system.
Smart Images
Figure CN222391935U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of butterfly heads, in particular to a pressure-releasing butterfly head for a pressure vessel. Background Art
[0002] The butterfly head is a common pressure vessel head. Its shape is similar to the wings of a butterfly, with arc-shaped ends and a thinner middle part. Compared with the elliptical head, the butterfly head is shallower in depth, so under the same pressure, its thickness is usually thicker than the elliptical head. The advantages of the butterfly head are that the manufacturing cost is relatively low, the manufacturing process is relatively simple, and the requirements for stamping equipment and molds are also low. However, due to its structural characteristics, the pressure bearing capacity of the butterfly head is not as good as that of the elliptical head.
[0003] The pressure relief butterfly head is a specially designed head used in pressure vessels. Its main function is to open to release pressure when the internal pressure of the container exceeds the design allowable value, thereby protecting the structural integrity and operational safety of the pressure vessel.
[0004] The existing pressure relief butterfly head has poor sealing effect during use and may leak after long-term use, which reduces the sealing performance of the butterfly head. When the release component is damaged, the downtime due to maintenance is long, which increases economic losses. Utility Model Content
[0005] In view of the above-mentioned problems, the utility model discloses a pressure relief butterfly head for a pressure vessel.
[0006] The technical solution of the utility model is: a pressure relief butterfly head for a pressure vessel, comprising a butterfly head body connected to an external pressure vessel, and a pressure relief assembly arranged on the butterfly head body;
[0007] The pressure relief assembly includes a pressure relief tube arranged on the butterfly head body, a pressure relief outer tube arranged at the opening of the pressure relief tube, a sliding plate having one end connected to the inner wall of the pressure relief outer tube through a spring rod, and a pressure relief inner tube arranged at the other end of the sliding plate and insertable into the opening of the pressure relief tube, a plurality of first pressure relief through holes are arranged on the side of the pressure relief outer tube opposite to the spring rod, and a plurality of second pressure relief through holes are arranged on the outer wall of the pressure relief inner tube.
[0008] Furthermore, the pressure relief tube is of a T-shaped structure, the pressure relief outer cylinder is arranged at one of the horizontal end openings of the pressure relief tube, and a spare release assembly is provided on the pressure relief tube, and the spare release assembly includes a sealing cover arranged on the pressure relief tube and at the opening on the opposite side of the pressure relief outer cylinder, a pressure relief screw rod with one end penetrating through the sealing cover and extending into the pressure relief tube and a screwing handle provided at the other end, and a pressure relief piston arranged in the pressure relief tube and connected to the pressure relief screw rod, and a spare pressure relief hole is provided at the end position of the pressure relief tube near the sealing cover.
[0009] Note: When using the backup release assembly for pressure relief, the staff turns the screw handle to make the pressure relief screw rod and the pressure relief piston move synchronously toward the backup pressure relief hole until the gas flows out of the backup pressure relief hole to complete the pressure release. This facilitates the maintenance of the pressure relief assembly and the backup release assembly, and they serve as backup for each other, providing dual pressure relief function and improving the reliability of the device.
[0010] Furthermore, the blocking cover is movably connected to the opening of the horizontal section of the pressure relief tube, and the pressure relief screw rod can move relative to the blocking cover.
[0011] Note: Under normal circumstances, the sealing cap has two functions. One is to limit the pressure release screw rod to ensure its stability. The other is to facilitate the removal of the screw handle and the pressure release piston as a whole, shortening the operation time and improving work efficiency.
[0012] Furthermore, the pressure relief pipe is provided with an electronic pressure gauge.
[0013] Description: Real-time monitoring of the air pressure in the pressure vessel facilitates intuitive observation of the air pressure value in the pressure vessel, ensures reliable pressure release, and improves safety in use.
[0014] Furthermore, the outer wall of the sliding plate is slidably connected to the inner wall of the pressure-releasing outer cylinder.
[0015] Note: Limit the sliding plate to ensure its stability when moving.
[0016] Furthermore, a sealing ring is provided on the side wall of the sliding plate and at the periphery of the pressure relief inner cylinder, and the inner diameter of the sealing ring is adapted to the diameter of the opening of the pressure relief tube.
[0017] Description: When the pressure relief inner cylinder is fully inserted into the pressure relief tube, the sealing ring is sleeved on the outer wall of the pressure relief tube to increase the sealing of the connection between the pressure relief inner cylinder and the pressure relief tube, avoid gas leakage inside the pressure vessel, resulting in a decrease in the pressure inside the container, avoid medium loss in the pressure vessel, and reduce production costs.
[0018] Beneficial effects of the utility model:
[0019] When the pressure-releasing butterfly head of the utility model is in use, a pressure-releasing pipe is arranged on the butterfly head, and pressure-releasing components and spare releasing components which serve as backup for each other are arranged on both sides of the pressure-releasing pipe. When the pressure-releasing component or the spare releasing component is damaged and needs to be repaired or replaced, the normal pressure-releasing work of the butterfly head will not be affected, thereby reducing the downtime of the external pressure vessel caused by repairs, reducing the losses caused by unexpected failures, and improving the reliability and safety of the system. When the pressure-releasing component is in use, the pressure is automatically released according to the size of the air pressure. After the pressure is reduced, the sealing ring is sleeved on the outer wall of the pressure-releasing pipe under the rebound action of the spring rod to achieve sealing. The whole process does not require human intervention. At the same time, the sealing performance of the connection between the pressure-releasing inner cylinder and the pressure-releasing pipe is increased to avoid leakage of gas inside the pressure vessel, which causes the pressure in the vessel to be reduced, avoids medium loss in the pressure vessel, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is the overall front view of the utility model;
[0021] Figure 2 The utility model Figure 1 Enlarged view of point A in the middle;
[0022] Figure 3 It is a side view of the installation of the sliding plate of the utility model on the pressure relief outer cylinder;
[0023] Figure 4 The utility model Figure 1 Enlarged view of point B in the middle.
[0024] Among them, 1-butterfly head body, 2-pressure relief assembly, 20-through port, 200-pressure relief pipe, 201-pressure relief outer cylinder, 2010-first pressure relief through hole, 202-sliding plate, 2020-spring rod, 203-pressure relief inner cylinder, 204-second pressure relief through hole, 205-sealing ring, 206-inspection valve, 21-electronic pressure gauge, 22-horizontal sliding groove, 23-sliding bar, 3-spare release assembly, 30-sealing cover, 300-internal threaded hole, 31-pressure relief screw rod, 310-screwing handle, 32-pressure relief piston, 33-spare pressure relief hole. DETAILED DESCRIPTION
[0025] Example 1
[0026] like Figure 1 , 2 As shown, a pressure relief butterfly head for a pressure vessel comprises a butterfly head body 1 connected to an external pressure vessel, and a pressure relief assembly 2 arranged on the butterfly head body 1;
[0027] The butterfly head body 1 is provided with a through hole 20, and the pressure relief assembly 2 includes a T-shaped pressure relief pipe 200 whose vertical section is connected to the through hole 20, a pressure relief outer cylinder 201 arranged at the periphery of one of the horizontal openings on the pressure relief pipe 200, a sliding plate 202 connected to the inner wall of the pressure relief outer cylinder 201 through a spring rod 2020 at one end, and a pressure relief inner cylinder 203 arranged at the other end of the sliding plate 202 and insertable into the horizontal opening of the pressure relief pipe 200. There are four first pressure relief holes 2010 on the opposite side, and ten second pressure relief holes 204 on the outer wall of the pressure relief inner cylinder 203. The size of the pressure relief inner cylinder 203 matches the inner diameter of the horizontal opening of the pressure relief tube 200, in order to ensure that the two are in close contact during pressure relief, and to prevent the size of the pressure relief inner cylinder 203 from being too small, causing gas to leak through the second pressure relief holes 204, resulting in a decrease in the pressure in the container, thereby failing to maintain the designed working pressure. The 40 second pressure relief holes 204 are evenly divided into The second pressure relief through holes 204 of each group are evenly distributed along the circumferential direction on the outer wall of the pressure relief inner cylinder 203, and the two adjacent groups of second pressure relief through holes 204 are evenly distributed. The purpose is to compress the spring rod 2020 by a corresponding length according to the gas pressure driving force of the pressure relief in the pressure container, so that the pressure relief inner cylinder 203 moves out of the horizontal end opening of the pressure relief tube 200 by a corresponding length. When the gas pressure is sufficient to completely move the pressure relief inner cylinder 203 out of the horizontal end of the pressure relief tube 200, the three groups of second pressure relief through holes 204 are used. The through holes 204 release pressure at the same time. When the air pressure can only make the pressure relief inner cylinder 203 move out from the horizontal end part of the pressure relief tube 200, the pressure is released according to the corresponding number of the moved out second pressure relief through holes 204, which greatly improves the pressure relief effect and avoids the occurrence of unsafe accidents caused by untimely pressure relief. When the spring rod 220 is compressed to the limit length, all the second pressure relief through holes 204 on the pressure relief inner cylinder 203 are exposed, but the end of the pressure relief inner cylinder 203 is still located in the pressure relief tube 200.
[0028] Among them, the spring rod 2020 adopts the existing technology.
[0029] Example 2
[0030] The difference between this embodiment and embodiment 1 is that:
[0031] like Figure 1 , 4 As shown, an electronic pressure gauge 21 is provided on the pressure relief pipe 220, and maintenance valves 206 are provided on both ends of the pressure relief pipe 200, so as to facilitate the maintenance of the pressure relief assembly 2 and the spare release assembly 3 and serve as a backup for each other;
[0032] The pressure relief outer cylinder 201 is disposed at one of the horizontal end openings of the pressure relief tube 200. The pressure relief tube 200 is provided with a spare release assembly 3. The spare release assembly 3 includes a blocking cap 30 disposed on the pressure relief tube 200 and at the opening on the opposite side of the pressure relief outer cylinder 201, a pressure relief screw rod 31 having one end penetrating the blocking cap 30 and extending into the pressure relief tube 200 and having a screw handle 310 disposed at the other end, and a pressure relief piston 32 disposed in the pressure relief tube 200 and connected to the pressure relief screw rod 31. A spare pressure relief hole 33 is provided at the end of the pressure relief pipe 200 near the blocking cover 30. When the pressure relief assembly 2 is damaged and needs to be repaired or replaced, the inspection valve 206 is closed, and the pressure value in the pressure container is detected by the electronic pressure gauge 21. When pressure relief is required, the staff rotates the screwing handle 310 to make the pressure relief screwing rod 31 and the pressure relief piston 32 move synchronously toward the spare pressure relief hole 33 until the gas flows out of the spare pressure relief hole 33 to complete the pressure relief.
[0033] The plugging cover 30 is movably connected to the opening of the horizontal section of the pressure relief pipe 200, and the outer wall of the pressure relief screw rod 31 is provided with an external thread, and the center of the plugging cover 30 is provided with an internal threaded hole 300, and the pressure relief screw rod 31 and the internal threaded hole 300 are threadedly connected. Under normal circumstances, the plugging cover 30 has two functions, one is to limit the pressure relief screw rod 31 to ensure its stability, and the other is to facilitate the removal of the screw handle 310 and the pressure relief piston 32 as a whole, thereby shortening the operation time and improving the work efficiency.
[0034] The electronic pressure gauge 21, the inspection valve 206 and the pressure relief piston 32 are all commercially available.
[0035] Example 3
[0036] The difference between this embodiment and embodiment 2 is that:
[0037] like Figure 3 As shown, the side wall of the pressure release outer cylinder 201 is evenly provided with four horizontal sliding grooves 22 along the circumferential direction, and the outer wall of the sliding plate 202 is provided with sliding bars 23 corresponding to and slidably connected with the horizontal sliding grooves 22 one by one, and each sliding bar 23 slides left and right in the corresponding horizontal sliding groove 22 to limit the sliding plate 202, thereby ensuring the stability of the sliding plate 202 when moving;
[0038] A sealing ring 205 is provided on the side wall of the sliding plate 202 and at the periphery of the pressure relief inner cylinder 203. The inner diameter of the sealing ring 205 matches the diameter of the opening of the pressure relief tube 200. When the pressure relief inner cylinder 203 is fully inserted into the pressure relief tube 200, the sealing ring 205 is sleeved on the outer wall of the pressure relief tube 200, thereby increasing the sealing performance of the connection between the pressure relief inner cylinder 203 and the pressure relief tube 200, preventing gas leakage inside the pressure vessel, resulting in a decrease in the pressure inside the vessel, and preventing medium loss inside the pressure vessel, thereby reducing production costs.
[0039] The sealing ring 205 is of prior art, and is made of nitrile rubber.
[0040] The method for using the device of this embodiment includes the following steps:
[0041] S1. Install the butterfly head body 1 on the external pressure vessel. Under normal circumstances, the inspection valve 206 near the spare release assembly 3 is closed, and the inspection valve 206 near the pressure relief assembly 2 is opened, and the pressure relief inner cylinder 203 is completely inserted into the pressure relief pipe 200. The sealing ring 205 is sleeved on the outer wall of the pressure relief pipe 200. When the air pressure in the external pressure vessel increases, the pressure relief inner cylinder 203 and the sliding plate 202 will be pushed to move synchronously and compress the spring rod 2020. In this process, the sliding bars 23 on the outer wall of the sliding plate 202 slide left and right in the corresponding horizontal sliding grooves 22 to limit the sliding plate 202.
[0042] S2, when the air pressure pushes the pressure relief inner cylinder 203 and the sliding plate 202 to move synchronously, the pressure relief inner cylinder 203 is moved out of the opening of the horizontal end of the pressure relief tube 200 by a corresponding length. When the air pressure is sufficient to completely move the pressure relief inner cylinder 203 out of the horizontal end of the pressure relief tube 200, the pressure is released simultaneously through the three groups of second pressure relief through holes 204. When the air pressure can only partially move the pressure relief inner cylinder 203 out of the horizontal end of the pressure relief tube 200, the pressure is released according to the corresponding groups of second pressure relief through holes 204 that have been moved out. When the spring rod 2020 is compressed to the limit length, all the second pressure relief through holes 204 on the pressure relief inner cylinder 203 are exposed, but the end of the pressure relief inner cylinder 203 is still located in the pressure relief tube 200.
[0043] S3. When the pressure relief component 2 is damaged and needs to be repaired or replaced, the inspection valve 206 near the spare release component 3 is opened, and the inspection valve 206 near the pressure relief component 2 is closed. The pressure value in the pressure vessel is detected by the electronic pressure gauge 21. When pressure relief is required, the staff turns the screw handle 310 to move the pressure relief screw rod 31 and the pressure relief piston 32 synchronously toward the spare pressure relief hole 33 until the gas flows out of the spare pressure relief hole 33 to complete the pressure relief.
Claims
1. A pressure relief butterfly head for a pressure vessel, characterized in that: It comprises a butterfly head body (1) connected to an external pressure vessel, and a pressure relief assembly (2) arranged on the butterfly head body (1); The pressure relief assembly (2) comprises a pressure relief tube (200) arranged on the butterfly head body (1), a pressure relief outer cylinder (201) arranged at the opening of the pressure relief tube (200), a sliding plate (202) one end of which is connected to the inner wall of the pressure relief outer cylinder (201) through a spring rod (2020), and a pressure relief inner cylinder (203) arranged at the other end of the sliding plate (202) and can be inserted into the opening of the pressure relief tube (200), a plurality of first pressure relief through holes (2010) are arranged on the side of the pressure relief outer cylinder (201) opposite to the spring rod (2020), and a plurality of second pressure relief through holes (204) are arranged on the outer wall of the pressure relief inner cylinder (203).
2. A pressure relief butterfly head for a pressure vessel according to claim 1, characterized in that: The pressure relief tube (200) is of a T-shaped structure. The pressure relief outer tube (201) is arranged at one of the horizontal end openings of the pressure relief tube (200). A spare release assembly (3) is arranged on the pressure relief tube (200). The spare release assembly (3) comprises a blocking cover (30) arranged on the pressure relief tube (200) at the opening on the opposite side of the pressure relief outer tube (201), a pressure relief screw rod (31) having one end penetrating the blocking cover (30) and extending into the pressure relief tube (200) and having the other end provided with a screw handle (310), and a pressure relief piston (32) arranged in the pressure relief tube (200) and connected to the pressure relief screw rod (31).
3. A pressure relief butterfly head for a pressure vessel according to claim 2, characterized in that: The blocking cover (30) is movably connected to the opening of the horizontal section of the pressure relief pipe (200), and the pressure relief screw rod (31) can move relative to the blocking cover (30).
4. The pressure relief butterfly head for a pressure vessel according to claim 1, characterized in that: The pressure relief pipe (200) is provided with an electronic pressure gauge (21).
5. The pressure relief butterfly head for a pressure vessel according to claim 1, characterized in that: The outer wall of the sliding plate (202) is slidably connected to the inner wall of the pressure-releasing outer cylinder (201).
6. The pressure relief butterfly head for a pressure vessel according to claim 1, characterized in that: A sealing ring (205) is provided on the side wall of the sliding plate (202) and at the periphery of the pressure relief inner cylinder (203); the inner diameter of the sealing ring (205) is adapted to the diameter of the opening of the pressure relief tube (200).