Siphon flange convenient for pressure relief

Abstract

The invention relates to the technical field of siphon flanges, in particular to a siphon flange convenient for pressure relief, which comprises a siphon flange and a pressure relief piece arranged on the siphon flange, the pressure relief piece comprises a pressure relief pipe arranged in the pipe wall of the siphon flange, and one side of the pressure relief pipe is provided with a lifting channel; a lower containing cavity and an upper containing cavity which are communicated with the pressure relief pipe are formed in the side wall of the lower portion of the lifting channel, a lower opening and an upper opening are formed in the intersection position of the lower containing cavity and the pressure relief pipe and the intersection position of the upper containing cavity and the pressure relief pipe respectively, and the upper containing cavity is formed above the lower containing cavity. A lower opening and closing plate and an upper opening and closing plate which are arranged on the outer side of the lifting rod in a sleeving mode are contained in the lower containing cavity and the upper containing cavity respectively in a matched mode, a lower ventilation opening matched with the pressure relief pipe is formed in the lower opening and closing plate, and an arc-strip-shaped upper ventilation opening is formed in the upper opening and closing plate. Conveying of high-pressure media to the pipeline is rapidly cut off, and high pressure is prevented from continuously acting on the upper switch plate.

Description

Technical Field

[0001] This invention relates to the field of siphon flange technology, and more particularly to a siphon flange that facilitates pressure relief. Background Technology

[0002] Existing mobile pressure vessels, after being filled with liquid materials, such as... Figure 1 As shown, the upper and lower parts of the pressure vessel are gas phase a1 and liquid phase a1, respectively. A siphon flange a3 is installed on the pressure vessel, and a siphon connecting pipe a4 connects to the lower part of the siphon flange a3. When the mobile container is moved to an area where the ambient temperature is higher than the loading location, the liquid evaporation will increase the pressure within the gas phase a1 space. Because the gas phase a1 space above the siphon connecting pipe a4 is relatively small, it is the area with higher pressure within the mobile container. If the valve or blind flange at the top of the siphon connecting pipe a4 is opened, liquid will splash out under pressure, causing adverse effects on operators and the surrounding environment. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a siphon flange that facilitates pressure relief in order to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides a siphon flange for easy pressure relief, comprising a siphon flange and a pressure relief component disposed on the siphon flange. The pressure relief component includes a pressure relief pipe formed within the pipe wall of the siphon flange. A lifting channel is provided on one side of the pressure relief pipe. A lower receiving cavity and an upper receiving cavity communicating with the pressure relief pipe are formed on the lower side wall of the lifting channel. The lower receiving cavity and the upper receiving cavity intersect the pressure relief pipe at their respective lower and upper openings. The upper receiving cavity is disposed above the lower receiving cavity. A lower switch plate and an upper switch plate sleeved on the outside of the lifting rod are respectively accommodated in the lower and upper receiving cavities. The switch plate has a lower switch plate with a lower vent that cooperates with the pressure relief pipe, and an upper switch plate with an arc-shaped upper vent. The upper vent includes a first section, a connecting section, and a second section. The first section is located directly above the lower vent and is the same size as the lower vent. The first section and the second section are the same size and do not overlap. The second section is located in the clockwise direction of the first section on the upper switch plate. The first section is connected to the second section through the connecting section to form the upper vent. A control component is provided in the lifting channel to control the rotation of the lower switch plate and the upper switch plate. When the lower and upper switch plates block the lower and upper openings respectively, the pressure relief pipe is in a blocked state. When pressure relief is needed, the control unit controls both the lower and upper switch plates to rotate clockwise. The second section of the upper vent is connected to the pressure relief pipe, while the lower vent is not connected to the pressure relief pipe. The upper opening is in an open state, and the lower opening is in a blocked state. After continuing to rotate clockwise, the first section of the upper vent is connected to the pressure relief pipe, and the lower vent is connected to the pressure relief pipe. The upper opening is still in an open state, while the lower opening is changed from a blocked state to an open state. When venting, the upper opening is opened first, and then the lower opening is opened slowly to avoid pipeline pressure buildup and prevent pressure surges. When the pressure relief pipe needs to be closed, the control unit controls both the lower and upper switch plates to rotate counterclockwise. The second section of the upper vent is connected to the pressure relief pipe, while the lower vent is not connected. The upper port is open, and the lower port is blocked. After continuing to rotate counterclockwise, the upper and lower vents are no longer connected to the pressure relief pipe, and both the upper and lower ports are blocked. To seal the pressure relief pipe, first close the lower port, then close the upper port, quickly cutting off the supply of high-pressure medium to the area above the lower port of the pressure relief pipe, thus preventing high pressure from continuously acting on the upper switch plate.

[0005] Optionally, the control component includes a lifting component disposed in the upper part of the lifting channel, the lower end of the lifting component is connected to a lifting rod, the outer wall of the lifting rod is provided with an external threaded groove, a lower slider and an upper slider are slidably connected in the external threaded groove, the lower switch plate and the upper switch plate are both sleeved on the lifting rod, and the lower switch plate and the upper switch plate are respectively connected to the lower slider and the upper slider.

[0006] Optionally, the lifting component is a lifting drive cylinder.

[0007] Optionally, an upper limit is provided within the upper receiving cavity to restrict the rotation and sliding of the upper switch plate.

[0008] Optionally, the upper limiting rail includes an upper annular groove disposed within the upper receiving cavity, and an upper annular slider fixedly connected to the upper switch plate is slidably connected within the upper annular groove.

[0009] Optionally, a lower limiting rail is provided in the lower receiving cavity to restrict the rotation and sliding of the lower switch plate.

[0010] Optionally, the lower limiting rail includes a lower annular groove disposed within the lower receiving cavity, and a lower annular slider fixedly connected to the lower switch plate is slidably connected within the lower annular groove.

[0011] Optionally, the siphon pipe flange sidewall has a movable pin, and the lifting rod is provided with multiple slots at equal intervals that cooperate with the pin.

[0012] The beneficial effects of the present invention are as follows: The siphon flange provided by the present invention facilitates pressure relief. When pressure relief is required, the control component controls both the lower and upper switch plates to rotate clockwise. The second section of the upper vent is connected to the pressure relief pipe, while the lower vent is not connected to the pressure relief pipe. The upper port is in an open state, and the lower port is in a blocked state. After continuing to rotate clockwise, the first section of the upper vent is connected to the pressure relief pipe, and the lower vent is connected to the pressure relief pipe. The upper port is still in an open state, while the lower port, due to its blocked state, is changed to an open state. When venting, the upper port is opened first, and then the lower port is opened slowly to avoid pressure buildup in the pipeline, prevent pressure surges, and ensure operational safety. The upper port is opened first to connect this part of the pressure relief pipeline to the atmosphere, forming a pressure relief channel. Then, the lower port is opened slowly, and the internal pressure in the lower part of the pressure relief pipe is smoothly relieved through the pipeline connected to the atmosphere, reducing the risk of pressure buildup. When it is necessary to close the pressure relief pipe, the control unit rotates both the lower and upper switch plates counterclockwise. The second section of the upper vent is connected to the pressure relief pipe, while the lower vent is not connected. The upper port is open, and the lower port is blocked. After continuing to rotate counterclockwise, neither the upper nor lower vent is connected to the pressure relief pipe, and both the upper and lower ports are blocked. To seal the pressure relief pipe, first close the lower port, then close the upper port, quickly cutting off the supply of high-pressure medium to the pipeline and preventing continuous high-pressure action. The upper switch plate ensures pipeline sealing, reduces the risk of failure, and facilitates subsequent maintenance. The lower switch plate is located near the lower end of the pressure relief pipe and is subjected to the impact and corrosion of the high-pressure medium in the pressure tank connected to the lower end of the pressure relief pipe for a long time. The upper switch plate is located near the upper end of the pressure relief pipe and is in contact with atmospheric or low-pressure environments. After the venting is completed, the lower port is closed first and then the upper port is closed. This allows the upper switch plate to be in a pressure-free or low-pressure state after the lower switch plate cuts off the high-pressure medium, thus reducing the continuous pressure and corrosion of the high-pressure medium on the upper switch plate and extending its service life. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the existing structure; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a partial structural schematic diagram of the pressure relief component of the present invention; Figure 5 for Figure 4 A top-view structural diagram; Figure 6 This is a partial three-dimensional structural diagram of the pressure relief component of the present invention.

[0015] In the diagram: 1. Siphon flange; 2. Pressure relief component; 3. Pressure relief pipe; 4. Lifting component; 5. Lifting rod; 6. External threaded slide groove; 7. Lower switch plate; 8. Lower vent; 9. Lower slider; 10. Lower receiving cavity; 11. Upper switch plate; 12. Upper vent; 13. Upper slider; 14. Upper receiving cavity; 15. Lifting channel. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] like Figures 2 to 6As shown, a siphon flange for easy pressure relief includes a siphon flange 1 and a pressure relief component 2 disposed on the siphon flange 1. The pressure relief component 2 includes a pressure relief pipe 3 formed within the pipe wall of the siphon flange 1. One end of the pressure relief pipe 3 is provided with an exhaust port located at the upper end of the siphon flange 1, and the other end of the pressure relief pipe 3 is provided with an air inlet located on the outer wall of the siphon flange 1. A lifting channel 15 is provided on one side of the pressure relief pipe 3 within the side wall of the siphon flange 1. A lower receiving cavity 10 and an upper receiving cavity 14 communicating with the pressure relief pipe 3 are formed on the lower side wall of the lifting channel 15. The upper receiving cavity 14 intersects with the pressure relief pipe 3 at its lower and upper openings, respectively. The upper receiving cavity 14 is positioned above the lower receiving cavity 10. The lower receiving cavity 10 and the upper receiving cavity 14 respectively accommodate a lower switch plate 7 and an upper switch plate 11 sleeved on the outside of the lifting rod 5. The lower switch plate 7 has a lower vent 8 that mates with the pressure relief pipe 3. The upper switch plate 11 has an arc-shaped upper vent 12, which includes a first section, a connecting section, and a second section. The first section is located directly above the lower vent 8 and is the same size as the lower vent 8. The first and second sections are of similar size. The first and second passages are located in the upper switch plate 11 in a clockwise direction. The first passage is connected to the second passage via a connecting section to form the upper vent 12. A control component is provided in the lifting channel 15 to control the rotation of the lower switch plate 7 and the upper switch plate 11. When the lower switch plate 7 and the upper switch plate 11 block the lower and upper openings respectively, the pressure relief pipe 3 is in a blocked state, and pressure is relieved through the pressure relief component 2. When pressure relief is required, the control component controls both the lower switch plate 7 and the upper switch plate 11 to rotate clockwise. The second passage of the upper vent 12 is connected to the pressure relief pipe 3, and the lower vent 8... Not connected to the pressure relief pipe 3, the upper opening is in the open state and the lower opening is in the blocked state. After continuing to rotate clockwise, the first section of the upper vent 12 is connected to the pressure relief pipe 3, and the lower vent 8 is connected to the pressure relief pipe 3. The upper opening is still in the open state, and the lower opening is changed to the open state due to the blocked state. When opening the vent, the upper opening is opened first, and then the lower opening is opened slowly to avoid the pipeline from being pressurized, prevent pressure shock, and ensure operational safety. The upper opening is opened first to connect this part of the pressure relief pipe to the atmosphere, forming a pressure relief channel. Then the lower opening is opened slowly, and the internal pressure of the lower part of the pressure relief pipe 3 is smoothly relieved through the pipeline connected to the atmosphere, reducing the risk of pressure buildup. When it is necessary to close the pressure relief pipe 3, the control unit controls both the lower switch plate 7 and the upper switch plate 11 to rotate counterclockwise. The second section of the upper vent 12 is connected to the pressure relief pipe 3, while the lower vent 8 is not connected to the pressure relief pipe 3. The upper port is in the open state, and the lower port is in the blocked state. After continuing to rotate counterclockwise, the upper vent 12 is no longer connected to the pressure relief pipe 3, and the lower vent 8 is no longer connected to the pressure relief pipe 3. Both the upper and lower ports are in the blocked state. To seal the pressure relief pipe 3, first close the lower port, and then close the upper port to quickly cut off the supply of high-pressure medium to the pipeline and prevent high pressure from continuously acting on the pipe. The upper switch plate 11 ensures the sealing of the pipeline, reduces the risk of failure, and facilitates subsequent maintenance. The lower switch plate 7 is close to the lower end of the pressure relief pipe 3 and is subjected to the impact and corrosion of the high-pressure medium in the pressure tank connected to the lower end of the pressure relief pipe 3 for a long time. The upper switch plate 11 is located close to the upper end of the pressure relief pipe 3 and is in contact with normal or low-pressure environments. After the venting is completed, the lower port is closed first and then the upper port is closed. This allows the upper switch plate 11 to be in a state of no pressure or low pressure after the lower switch plate 7 cuts off the high-pressure medium, thus reducing the continuous squeezing and corrosion of the upper switch plate 11 by the high-pressure medium and extending the service life of the upper switch plate 11.

[0019] The lower switch plate 7 and the upper switch plate 11 are equipped with sealing elements, and the lower switch plate 7 and the upper switch plate 11 can also provide a double seal, reducing the possibility of air leakage. After closing the upper and lower ports, a double isolation is formed. Even if one of them fails to seal properly, the other can still prevent the medium inside the tank from leaking out, greatly improving the sealing reliability of the pipeline.

[0020] The control component includes a lifting member 4 disposed in the upper part of the lifting channel 15. The lower end of the lifting member 4 is connected to a lifting rod 5 that can be raised and lowered. The lifting member 4 is used to control the lifting rod 5 to move up and down. The outer wall of the lifting rod 5 is provided with an external threaded groove 6. A lower slider 9 and an upper slider 13 are slidably connected in the external threaded groove 6. The lower switch plate 7 and the upper switch plate 11 are both sleeved on the lifting rod 5. The lower switch plate 7 and the upper switch plate 11 are respectively connected to the lower slider 9 and the upper slider 13. The lower switch plate 7 and the upper switch plate 11 are each provided with a through hole for the lifting rod 5 to pass through. The lower slider 9 and the upper slider 13 are respectively disposed on the inner side wall of the two through holes.

[0021] When the lifting member 4 controls the lifting rod 5 to move downward, due to the sliding connection between the external threaded groove 6 and the lower slider 9 and the upper slider 13, the lower receiving cavity 10 restricts the lower switch plate 7 from moving downward and the upper receiving cavity 14 restricts the upper switch plate 11 from moving downward, causing the lower switch plate 7 to rotate counterclockwise in the lower receiving cavity 10 and the upper switch plate 11 to rotate counterclockwise in the upper receiving cavity 14. When the lifting member 4 controls the lifting rod 5 to move upward, due to the sliding connection between the external threaded groove 6 and the lower slider 9 and the upper slider 13, the lower receiving cavity 10 restricts the lower switch plate 7 from moving upward and the upper receiving cavity 14 restricts the upper switch plate 11 from moving upward, causing the lower switch plate 7 to rotate clockwise in the lower receiving cavity 10 and the upper switch plate 11 to rotate clockwise in the upper receiving cavity 14.

[0022] The lifting component 4 is a lifting drive cylinder. The lifting drive cylinder can be driven by electricity, pneumatics or hydraulics. The extension and retraction of the extension and retraction end of the lifting drive cylinder drives the lifting rod 5 to rise and fall.

[0023] The upper cavity 14 is provided with an upper limiting rail to restrict the rotation and sliding of the upper switch plate 11, which helps to reduce the probability of the upper switch plate 11 deflecting during rotation.

[0024] The upper limiting rail includes an upper annular groove disposed in the upper receiving cavity 14, and an upper annular slider fixedly connected to the upper switch plate 11 is slidably connected in the upper annular groove, which helps to reduce the probability of the upper switch plate 11 deflecting when rotating.

[0025] The lower receiving cavity 10 is provided with a lower limiting rail to restrict the rotation and sliding of the lower switch plate 7, which helps to reduce the probability of the lower switch plate 7 deflecting during rotation.

[0026] The lower limiting rail includes a lower annular groove disposed in the lower receiving cavity 10. A lower annular slider fixedly connected to the lower switch plate 7 is slidably connected in the lower annular groove, which helps to reduce the probability of the lower switch plate 7 deflecting during rotation.

[0027] The siphon flange 1 has a movable pin on its side wall, and the lifting rod 5 has multiple slots at equal intervals that cooperate with the pin, so as to facilitate the restriction of the lifting rod 5.

[0028] The siphon flange 1 is provided with a moving part for controlling the horizontal movement of the pin so that the pin can be inserted into the slot. The moving part can be a horizontally telescopic cylinder.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples. The invention is not limited to the above-described embodiments, that is, it does not mean that the invention must rely on the above methods and structures to be implemented. Under the concept of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0030] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A siphon flange for easy pressure relief, characterized in that, The system includes a siphon flange and a pressure relief component mounted on the siphon flange. The pressure relief component includes a pressure relief pipe formed within the pipe wall of the siphon flange. A lifting channel is provided on one side of the pressure relief pipe. A lower receiving cavity and an upper receiving cavity communicating with the pressure relief pipe are formed on the lower side wall of the lifting channel. The lower receiving cavity and the upper receiving cavity intersect the pressure relief pipe at their lower and upper openings, respectively. The upper receiving cavity is located above the lower receiving cavity. A lower switch plate and an upper switch plate, respectively, sleeved on the outside of the lifting rod, are respectively accommodated in the lower receiving cavity and the upper receiving cavity. The lower switch plate is equipped with... The upper switch plate has a lower vent that mates with the pressure relief pipe. The upper switch plate has an arc-shaped upper vent, which includes a first section, a connecting section, and a second section. The first section is located directly above the lower vent and is the same size as the lower vent. The first and second sections are the same size and do not overlap. The second section is located clockwise from the first section on the upper switch plate. The first section connects to the second section via the connecting section to form the upper vent. A control component is provided within the lifting channel to control the rotation of the lower and upper switch plates. When the lower and upper switch plates block the lower and upper openings respectively, the pressure relief pipe is in a blocked state. When pressure relief is needed, the control unit controls both the lower and upper switch plates to rotate clockwise. The second section of the upper vent is connected to the pressure relief pipe, while the lower vent is not connected to the pressure relief pipe. The upper opening is in an open state, and the lower opening is in a blocked state. After continuing to rotate clockwise, the first section of the upper vent is connected to the pressure relief pipe, and the lower vent is connected to the pressure relief pipe. The upper opening is still in an open state, while the lower opening is changed from a blocked state to an open state. When venting, the upper opening is opened first, and then the lower opening is opened slowly to avoid pipeline pressure buildup and prevent pressure surges. When the pressure relief pipe needs to be closed, the control unit controls both the lower and upper switch plates to rotate counterclockwise. The second section of the upper vent is connected to the pressure relief pipe, while the lower vent is not connected. The upper port is open, and the lower port is blocked. After continuing to rotate counterclockwise, the upper and lower vents are no longer connected to the pressure relief pipe, and both the upper and lower ports are blocked. To seal the pressure relief pipe, first close the lower port, then close the upper port, quickly cutting off the supply of high-pressure medium to the area above the lower port of the pressure relief pipe, thus preventing high pressure from continuously acting on the upper switch plate.

2. The siphon flange for easy pressure relief according to claim 1, characterized in that, The control component includes a lifting component located at the upper part of the lifting channel. The lower end of the lifting component is connected to a lifting rod. The outer wall of the lifting rod is provided with an external threaded groove. A lower slider and an upper slider are slidably connected in the external threaded groove. A lower switch plate and an upper switch plate are both sleeved on the lifting rod. The lower switch plate and the upper switch plate are respectively connected to the lower slider and the upper slider.

3. The siphon flange for easy pressure relief according to claim 1, characterized in that, The lifting component is a lifting drive cylinder.

4. The siphon flange for easy pressure relief according to claim 1, characterized in that, The upper cavity is provided with an upper limiter that restricts the rotation and sliding of the upper switch plate.

5. The siphon flange for easy pressure relief according to claim 4, characterized in that, The upper limiting rail includes an upper annular groove disposed in the upper receiving cavity, and an upper annular slider fixedly connected to the upper switch plate is slidably connected in the upper annular groove.

6. The siphon flange for easy pressure relief according to claim 1, characterized in that, The lower receiving cavity is provided with a lower limiting rail to restrict the rotation and sliding of the lower switch plate.

7. The siphon flange for easy pressure relief according to claim 6, characterized in that, The lower limiting rail includes a lower annular groove disposed in the lower receiving cavity, and a lower annular slider fixedly connected to the lower switch plate is slidably connected in the lower annular groove.

8. The siphon flange for easy pressure relief according to claim 1, characterized in that, The siphon pipe flange has a movable pin on its side wall, and the lifting rod has multiple slots at equal intervals that cooperate with the pin.

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