Instrument pipe fitting with pressure relief function
By designing a double-layer pipe fitting structure and pressure relief sleeve system in instrument fittings, the automatic pressure relief function is realized, solving the problems of high-pressure leakage and pipe explosion in the existing technology, and improving safety and operation convenience.
Patent Information
- Application Number
- CN202420718579.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-09
AI Technical Summary
Existing instrument fittings are prone to leakage or bursting of pipes when the pressure in the pipe is high during inspection, which lacks automatic pressure relief function, which affects the safety of use.
A double-layer pipe fitting structure is designed, with a pressure relief sleeve at the top of the inner tube. Through the cooperation of the baffle, the barrier ring and the spring, the pressure relief hole is used to achieve automatic pressure relief. When the pressure of the inner tube is too high, liquid or gas passes through. The pressure relief hole flows out from the inner and outer tubes, has automatic pressure relief function, and adjusts the pressure relief pressure through the movable rod, sleeve and limit structure.
It realizes the automatic pressure relief function under high pressure conditions, avoids leakage and tube explosion, and improves the safety of the instrument's use and operation convenience.
Smart Images
Figure CN222186078U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of instrument pipe fittings, in particular to an instrument pipe fitting with a pressure relief function. Background Art
[0002] Instrument fittings are used in pipeline connections or control systems. They are used to change the direction of pipelines, branch pipelines, or connect pipes of different sizes. Their use environment is much more demanding than that of straight pipes. The materials used for fittings can be pipes, plates, forgings, castings, bars, and profiles. Usually, the material and thickness of the fittings depend on the material, shape, size of the fittings used, as well as the fluid medium and pressure being transported.
[0003] A high-sealing instrument pipe fitting described in publication number CN218152856U includes two connecting pipes, the left end surface of each connecting pipe is provided with four slots in a circumferential array, and the right end of each connecting pipe is provided with an annular sleeve, wherein the right end of one connecting pipe is plugged together with the left end of the other connecting pipe. The utility model provides slots, annular sleeves, annular grooves, sliders, telescopic sleeves, positioning blocks, positioning grooves, blocks and springs, and cooperates with the inclined surface of the through opening to make the blocks retract into or extend out of the surface of the connecting pipe, thereby facilitating personnel to quickly install and disassemble the connecting pipe, and the positioning blocks and positioning grooves can play a role in positioning during installation. By providing a first sealing ring, a reinforcement sleeve and a second sealing ring, the reinforcement sleeve can drive the second annular sealing ring to press tightly against the first sealing ring, thereby improving the sealing of the connection between the instrument pipe fittings. However, the prior art still has defects:
[0004] The instrument pipe fittings used in the prior art use sealing rings at the joints to achieve sealing at the pipe fitting joints. However, when the instrument pipe fittings are being tested, when the pressure value in the pipe is high, leakage or even bursting of the pipe is likely to occur at the joints, affecting the safe use of the instrument. The pipe fittings do not have the function of automatic pressure relief. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects and provide an instrument pipe fitting with a pressure relief function.
[0006] In order to solve the above technical problems, the technical solution provided by the utility model is an instrument pipe fitting with a pressure relief function, comprising an outer pipe, an inner pipe is arranged inside the outer pipe, a plurality of evenly distributed support ring blocks are arranged between the outer pipe and the inner pipe, a plurality of evenly distributed water holes are opened on the front side of the outer side of the support ring blocks, a mounting hole is opened on the upper side of the outer side of the outer pipe, a pressure relief sleeve is embedded in the mounting hole, the outer upper end of the pressure relief sleeve extends to the upper side of the outer side of the outer pipe, a plurality of evenly distributed pressure relief holes are opened on the inner edge of the pressure relief sleeve, and a plurality of evenly distributed pressure relief holes are opened on the lower side of the inner side of the pressure relief sleeve. A baffle used in conjunction with the inner tube, the upper side of the baffle is fixedly connected to a movable rod, a baffle ring is provided inside the pressure relief sleeve on the upper side of the baffle, a sleeve is fixedly connected to the outer upper side of the baffle, the sleeve is sleeved on the outside of the movable rod, a movable hole used in conjunction with the sleeve is opened on the outer upper side of the pressure relief sleeve, a limiting structure is provided between the movable rod and the movable hole, a positioning structure is provided between the sleeve and the movable hole, a spring is provided between the baffle and the baffle ring, a swivel used in conjunction with the sleeve is rotatably connected to the outer upper side of the pressure relief sleeve, and the inner side of the swivel is threadedly connected to the outer side of the sleeve.
[0007] As an improvement, the interior of the pressure relief sleeve is connected through the interior of the inner tube, and the interior of the pressure relief sleeve is connected through the interior of the outer tube via a pressure relief hole.
[0008] As an improvement, connection plates are arranged at the front and rear of the outer tube, and a plurality of evenly distributed connection holes are opened at the front side of the connection plates.
[0009] As an improvement, the limiting structure includes limiting blocks fixedly connected to both sides of the movable hole, and both sides of the outside of the movable rod are provided with limiting grooves used in conjunction with the limiting blocks.
[0010] As an improvement, the positioning structure includes positioning holes opened on both sides of the outer side of the sleeve for use with the limiting blocks, and the ends of the limiting blocks close to each other pass through the positioning holes and are inserted into the limiting grooves.
[0011] Compared with the prior art, the advantages of the utility model are as follows: 1. The utility model uses an inner tube and an outer tube to form a double-layer pipe fitting, liquid or gas is transported inside the inner tube, a pressure relief sleeve is arranged at the top of the inner tube, and a baffle is arranged at the bottom end of the inner part of the pressure relief sleeve, and the baffle is squeezed by a baffle ring and a spring. When the internal pressure value of the inner tube is too high, it can flow out from between the inner tube and the outer tube through the pressure relief hole opened in the pressure relief sleeve, so as to relieve the pressure inside the inner tube, and the outflowing water or gas flows out from the inside of the outer tube and will not flow into the interior of the instrument, and has the function of automatic pressure relief.
[0012] 2. The utility model installs a movable rod at the upper end of the baffle and a sleeve at the upper end of the baffle ring. Through the movable hole and the movable rod and the limiting structure and positioning structure between the movable hole and the sleeve, the length of the spring between the baffle and the baffle ring can be adjusted by rotating the swivel ring to adjust the pressure relief pressure value of the inner tube. The operation is more convenient and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a stereoscopic diagram of an instrument pipe fitting with a pressure relief function of the utility model.
[0014] Figure 2 The utility model is an exploded view of an instrument pipe fitting with a pressure relief function.
[0015] Figure 3 It is an enlarged view of A of an instrument pipe fitting with a pressure relief function of the utility model.
[0016] Figure 4 It is a right side cross-sectional view of an instrument pipe fitting with a pressure relief function according to the utility model.
[0017] Figure 5 It is an enlarged view B of an instrument pipe fitting with a pressure relief function of the utility model.
[0018] Figure 6 It is a main cross-sectional view of an instrument pipe fitting with a pressure relief function of the utility model.
[0019] As shown in the figure: 1. Outer tube; 2. Inner tube; 3. Support ring block; 4. Water hole; 5. Mounting hole; 6. Pressure relief sleeve; 7. Pressure relief hole; 8. Baffle; 9. Movable rod; 10. Baffle ring; 11. Sleeve; 12. Movable hole; 13. Limiting structure; 14. Positioning structure; 15. Spring; 16. Swivel; 17. Connecting plate; 18. Connecting hole; 19. Limiting block; 20. Limiting groove; 21. Positioning hole. DETAILED DESCRIPTION
[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0021] like Figure 1-6As shown, the utility model is provided with an outer tube 1, an inner tube 2 is provided inside the outer tube 1, a plurality of evenly distributed support ring blocks 3 are arranged between the outer tube 1 and the inner tube 2, the inner tube 2 and the outer tube 1 are supported by the support ring blocks 3, a plurality of evenly distributed water holes 4 are provided on the front side of the outer side of the support ring blocks 3, so as to facilitate the water circulation between the inner tube 2 and the outer tube 1, a mounting hole 5 is provided on the upper side of the outer side of the outer tube 1, a pressure relief sleeve 6 is embedded in the mounting hole 5, the outer upper end of the pressure relief sleeve 6 extends to the upper side of the outer side of the outer tube 1, the lower end of the pressure relief sleeve 6 is connected to the outer upper end of the inner tube 2, the inner side of the inner tube 2 and the inner side of the pressure relief sleeve 6 are through-connected, a plurality of evenly distributed pressure relief holes 7 are provided on the inner edge of the pressure relief sleeve 6, The interior of 6 and the space between the outer tube 1 and the inner tube 2 are connected together. The water inside the inner tube 2 can pass through the interior of the pressure relief sleeve 6 and then through the interior of the pressure relief hole 7 to flow into the gap between the outer tube 1 and the inner tube 2, and flow inside the water hole 4. A baffle 8 is provided on the lower side of the interior of the pressure relief sleeve 6, which is in contact with the inner wall of the inner tube 2. The lower side of the baffle 8 has an arc shape, and a movable rod 9 is connected to the upper side of the baffle 8. A baffle ring 10 is provided inside the pressure relief sleeve 6. The baffle ring 10 is on the upper side of the baffle 8. A sleeve 11 is installed on the upper side of the outer side of the baffle ring 10. The sleeve 11 is sleeved on the outside of the movable rod 9. A movable hole 12 is opened on the upper side of the outer side of the pressure relief sleeve 6, and the upper ends of the sleeve 11 and the movable rod 9 extend from the inside of the movable hole 12 to the upper side of the outer side of the pressure relief sleeve 6.
[0022] The utility model is provided with a spring 15 between the baffle 8 and the baffle ring 10, and the spring 15 always tends to squeeze the baffle 8 downward, and the upper side of the outer side of the pressure relief sleeve 6 is rotatably connected with a swivel 16, and the inner part of the swivel 16 and the outer part of the sleeve 11 are threaded together, and the sleeve 11 can be driven to move up and down inside the movable hole 12 by rotating the swivel 16, and the front and rear of the outer side of the outer tube 1 are provided with connecting plates 17, and the front side of the connecting plate 17 is provided with a plurality of evenly distributed connecting holes 18, and the two groups of pipe fittings can be connected by passing bolts through the connecting holes 18, and limit blocks 19 are installed on both sides of the inner side of the movable hole 12, and limit grooves 20 used in conjunction with the limit blocks 19 are provided on both sides of the outer side of the movable rod 9. After the upper ends of the limiting grooves 20 on both sides of 9 contact the upper sides of the limiting blocks 19, the lower sides of the blocking pieces 8 just fit with the inner wall of the inner tube 2. The limiting grooves 20 can ensure that the movable rod 9 can only move up and down along the limiting blocks 19 through the limiting grooves 20, preventing the movable rod 9 from rotating, limiting the blocking pieces 8, and forming a set of limiting structures 13. Positioning holes 21 for use with the limiting blocks 19 are provided on both sides of the outside of the sleeve 11. The ends of the limiting blocks 19 that are close to each other are inserted into the limiting grooves 20 through the positioning holes 21, ensuring that the sleeve 11 can only move up and down along the limiting blocks 19 inside the movable hole 12 through the positioning holes 21, preventing the sleeve 11 from rotating together with the rotating ring 16 when rotating, and forming a positioning structure 14.
[0023] When the utility model is implemented, the pipe fittings to be used are first connected through bolts, connecting plates 17 and connecting holes 18, and the pressure value of the pressure relief is adjusted according to the needs. The sleeve 11 is driven to move up and down by the rotation of the swivel 16. When the required pressure value is large, the swivel 16 is rotated to move the baffle ring 10 downward, the spring 15 is compressed, and the elastic force between the baffle ring 10 and the baffle plate 8 increases. This requires that the water pressure or air pressure inside the inner tube 2 is larger to push the baffle plate 8 up, and water or gas flows out from the pressure relief hole 7 opened inside the pressure relief sleeve 6 to between the inner tube 2 and the outer tube 1, and flows inside the water through hole 4. When a part of the water or gas inside the inner tube 2 flows out, the pressure value inside the inner tube 2 drops, and the baffle 8 falls back to the bottom end inside the pressure relief sleeve 6 under the pressure of the spring 15. At this time, the top of the limit groove 20 is just in contact with the upper side of the limit block 19, and the pressure relief value of the inner tube 2 is adjusted by the distance between the baffle ring 10 and the baffle 8. The larger the distance between the baffle ring 10 and the baffle 8, the less elastic potential energy the spring 15 has, and the lower the pressure relief value inside the inner tube 2. The smaller the distance between the baffle ring 10 and the baffle 8, the shorter the spring 15 is compressed, the greater the elastic potential energy, and the higher the pressure relief value inside the inner tube 2.
[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. An instrument pipe fitting with a pressure relief function, comprising an outer pipe (1), characterized in that: An inner tube (2) is arranged inside the outer tube (1), a plurality of evenly distributed support ring blocks (3) are arranged between the outer tube (1) and the inner tube (2), a plurality of evenly distributed water holes (4) are provided on the front side of the outer side of the support ring blocks (3), a mounting hole (5) is provided on the upper side of the outer side of the outer tube (1), a pressure relief sleeve (6) is embedded inside the mounting hole (5), the upper end of the outer side of the pressure relief sleeve (6) extends to the upper side of the outer side of the outer tube (1), a plurality of evenly distributed pressure relief holes (7) are provided on the inner edge of the pressure relief sleeve (6), a baffle (8) used in conjunction with the inner tube (2) is provided on the lower side of the inner side of the pressure relief sleeve (6), a movable rod (9) is fixedly connected to the upper side of the baffle (8), and the inner side of the pressure relief sleeve (6) is provided with a movable rod (9). A retaining ring (10) is arranged on the upper side of the retaining plate (8), a sleeve (11) is fixedly connected to the upper side of the outer portion of the retaining ring (10), the sleeve (11) is sleeved on the outside of the movable rod (9), a movable hole (12) for use with the sleeve (11) is opened on the upper side of the outer portion of the pressure relief sleeve (6), a limiting structure (13) is arranged between the movable rod (9) and the movable hole (12), a positioning structure (14) is arranged between the sleeve (11) and the movable hole (12), a spring (15) is arranged between the retaining plate (8) and the retaining ring (10), a swivel (16) for use with the sleeve (11) is rotatably connected to the upper side of the outer portion of the pressure relief sleeve (6), and the interior of the swivel (16) is threadedly connected to the exterior of the sleeve (11).
2. The instrument pipe fitting with pressure relief function according to claim 1, characterized in that: The interior of the pressure relief sleeve (6) is connected to the interior of the inner tube (2), and the interior of the pressure relief sleeve (6) is connected to the interior of the outer tube (1) via the pressure relief hole (7).
3. The instrument pipe fitting with pressure relief function according to claim 1, characterized in that: The outer tube (1) is provided with connection plates (17) at the front and rear of the exterior, and the front side of the connection plates (17) is provided with a plurality of evenly distributed connection holes (18).
4. The instrument pipe fitting with pressure relief function according to claim 1, characterized in that: The limiting structure (13) comprises limiting blocks (19) fixedly connected to both sides of the inside of the movable hole (12), and limiting grooves (20) for matching with the limiting blocks (19) are provided on both sides of the outside of the movable rod (9).
5. The instrument pipe fitting with pressure relief function according to claim 4, characterized in that: The positioning structure (14) comprises positioning holes (21) provided on both sides of the outside of the sleeve (11) and used in conjunction with the limiting blocks (19); the ends of the limiting blocks (19) that are close to each other pass through the positioning holes (21) and are inserted into the limiting grooves (20).