Magnetic attraction hoop type emergency breakaway valve

Abstract

The invention relates to the technical field of breakaway valves, in particular to a magnetic attraction hoop type emergency breakaway valve which comprises two valve bodies, grooves are formed in the inner walls of the two valve bodies, fixing sleeves are fixedly connected to the top ends of the two valve bodies, a limiting mechanism is arranged between the two fixing sleeves, and rapid stopping mechanisms are arranged at the top ends of the two fixing sleeves. A magnetic attraction hoop mechanism is arranged between the two valve bodies. Each limiting mechanism comprises a valve plate arranged in the corresponding fixing sleeve, a fixing plate is fixedly connected to one end of the fixing sleeve on one side, sliding plates are slidably connected to the two sides of the bottom end of the fixing plate, and racks are fixedly connected to the ends, close to each other, of the two sliding plates; resistance during petroleum conveying can be reduced, petroleum flow can be guaranteed, petroleum conveying capacity can be improved, petroleum conveying efficiency can be improved, damage-free snapping can be achieved, parts do not need to be replaced after snapping, and recycling can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of breakaway valves, and in particular to a magnetic clamp type emergency breakaway valve. Background Art

[0002] In the petrochemical, LNG, road and rail transportation industries, emergency breakaway valves are used as safety devices to prevent leakage accidents caused by pipeline ruptures due to unexpected circumstances during fluid transportation. They are usually installed at the connection between fluid loading and unloading arms, hoses or other fluid storage and transportation devices and transportation carriers (such as tank trucks and cargo ships).

[0003] At present, there are two main types of breakaway valves, namely bolt-actuated breakaway valves and rope-actuated breakaway valves. Bolt-actuated breakaway valves require replacement of the breakaway bolts and O-rings after each break, which increases maintenance costs. In addition, the loading and unloading arm needs to be stretched to its limit to break the breakaway valve, which may cause damage to the loading and unloading arm and its pipeline components. Although the rope-actuated breakaway valve can be broken without loss, the wire rope may also be damaged to a certain extent. In addition, due to environmental influences, the wire rope may be corroded and worn. When installing the wire rope, it is necessary to ensure that the wire rope is shorter than the pipeline to ensure that the wire rope is stretched and tightened earlier than the pipeline and then triggered to break. This increases the complexity of the installation of the breakaway valve. In addition, when the breakaway valve is in use, since the valve core is located at the inner center of the valve body, the oil will contact the valve core when transporting oil, and the valve core and valve seat will be washed by the oil for a long time, which will cause the sealing surface between the valve core and the valve seat to wear, corrode or contain impurities, resulting in a loose seal, and resistance when the oil contacts the valve core, which will cause the oil flow rate to become smaller, reduce the oil transportation capacity, and further affect the oil transportation efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a magnetic clamp type emergency breakaway valve.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a magnetic clamp type emergency breakaway valve, comprising two valve bodies, the inner walls of the two valve bodies are provided with grooves, the tops of the two valve bodies are fixedly connected with fixed sleeves, a limiting mechanism is provided between the two fixed sleeves, a quick blocking mechanism is provided at the tops of the two fixed sleeves, and a magnetic clamp mechanism is provided between the two valve bodies; The limiting mechanism comprises a valve plate arranged inside the fixing sleeve, one end of the fixing sleeve on one side is fixedly connected to a fixing plate, both sides of the bottom end of the fixing plate are slidably connected to slide plates, two slide plates are fixedly connected to racks at one end close to each other, two racks are fixedly connected to limiting posts at one end away from each other, two limiting posts penetrate the fixing sleeve, and limiting grooves are provided at one end of the two valve plates close to each other, and the limiting posts are inserted into the limiting grooves to make the valve plates stuck in the fixing sleeve, thereby reducing the resistance to the flow of oil; The magnetic clamp mechanism includes two clamp bodies, the bottom ends of the two clamp bodies are rotatably connected with a connecting plate, the top ends of the two clamp bodies are respectively fixedly connected with a first fixing block and a second fixing block, the end of the second fixing block away from the first fixing block is fixedly connected with a first magnet, the end of the first fixing block away from the second fixing block is fixedly connected with a first spring, the other end of the first spring is fixedly connected with a circular block, the other end of the circular block is fixedly connected with a second magnet with different magnetic properties from the first magnet, one end of the circular block is fixedly connected with a pin connecting the first fixing block and the second fixing block together corresponding to the inner side of the first spring, and the first magnet and the second magnet attract each other for fixing the pin.

[0006] Preferably, the limiting mechanism also includes a rotating shaft rotatably connected to the middle of the bottom end of the fixed plate, the outer wall of the rotating shaft is fixedly connected to a gear, the gear is meshingly connected to the two racks, and one end of the other fixed sleeve is provided with a placement groove for placing the fixed plate.

[0007] Preferably, the limiting mechanism also includes a square sleeve fixedly connected to the bottom end of the rack on one side, a square column is provided on the inner wall of the square sleeve, a second spring is fixedly connected between the square column and the square sleeve, and a slot for limiting the square column is provided at the top of the circular block.

[0008] Preferably, the magnetic clamp mechanism further comprises a fixing ring fixedly connected to the side of the outer wall of the valve body close to each other, and the outer walls of the two fixing rings close to each other are both fixedly connected to a trapezoidal ring on the side.

[0009] Preferably, the four corners of one end of the fixing ring on one side are fixedly connected with positioning columns, and the positions of the positioning columns at one end of the other side of the fixing ring are provided with positioning grooves, and the diameter of the upper positioning column is greater than that of the lower positioning column.

[0010] Preferably, the rapid blocking mechanism comprises a telescopic plate fixedly connected to the top end of the valve plate, the two telescopic plates respectively penetrate two fixed sleeves, and a blocking groove is formed at one end of the two telescopic plates.

[0011] Preferably, the quick blocking mechanism also includes a blocking block fixedly connected to one side of the top end of the fixed sleeve, and the two blocking blocks are each provided with a telescopic groove at one end close to the telescopic plate, and the inner walls of the two telescopic grooves are each provided with a telescopic rod, and the thickness of the two telescopic rods is less than the thickness of the blocking groove.

[0012] Preferably, a third spring is fixedly connected between the two groups of telescopic rods and telescopic slots, the other ends of the two telescopic rods are fixedly connected to a circular column, the two circular columns respectively pass through two blocking blocks, and the other ends of the two circular columns are fixedly connected to a pulling block.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By means of the setting limit mechanism, the valve plate can be stuck inside the fixed sleeve during use, so that the contact with the valve plate can be avoided during oil transportation, the corrosion and wear of the valve plate can be reduced, the situation of poor sealing can be avoided, and the resistance during oil transportation can be reduced to ensure the oil flow, thereby improving the oil transportation capacity and further improving the oil transportation efficiency; The magnetic clamp mechanism can quickly release the restriction on the clamp body in case of an accident, so that the valve body can be quickly separated, and then it can be pulled off without loss. After pulling off, there is no need to replace the parts, so it can be reused, which improves the use effect. By setting up a quick blocking mechanism, the valve plate can be blocked when it falls, which can prevent the valve plate from jumping. Therefore, the blocking operation can be completed quickly to reduce the loss of oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of a magnetic clamp type emergency breakaway valve of the present invention; Figure 2 A magnetic clamp type emergency breakaway valve according to the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a bottom-up stereoscopic diagram of a magnetic clamp-type emergency breakaway valve of the present invention; Figure 4 A magnetic clamp type emergency breakaway valve according to the present invention Figure 3 Enlarged view of point B in the middle; Figure 5 It is a cross-sectional view of a square sleeve of a magnetic clamp type emergency breakaway valve of the present invention; Figure 6 This is a disassembled view of the valve body of a magnetic clamp type emergency breakaway valve of the present invention; Figure 7 This is another perspective view of the valve body of a magnetic clamp type emergency breakaway valve of the present invention; Figure 8It is a cross-sectional view of a fixing sleeve of a magnetic clamp type emergency breakaway valve of the present invention; Fig. 9 A magnetic clamp type emergency breakaway valve according to the present invention Figure 8 Enlarged view of point C in the middle; Fig.10 It is a cross-sectional view of a valve body and a fixing sleeve of a magnetic clamp type emergency breakaway valve of the present invention; Fig.11 This is a structural diagram of a clamp body of a magnetic clamp type emergency breakaway valve of the present invention.

[0015] In the figure: 1, valve body; 2, groove; 3, fixing sleeve; 4, valve plate; 5, fixing plate; 6, slide plate; 7, rack; 8, limiting column; 9, limiting groove; 10, first fixing block; 11, second fixing block; 12, first magnet; 13, first spring; 14, round block; 15, second magnet; 16, latch; 17, rotating shaft; 18, gear; 19, placement groove; 20, square sleeve; 21, square column; 22, second spring; 23, slot; 24, fixing ring; 25, trapezoidal ring; 26, positioning column; 27, positioning groove; 28, telescopic plate; 29, blocking groove; 30, blocking block; 31, telescopic groove; 32, telescopic rod; 33, third spring; 34, round column; 35, clamp body. DETAILED DESCRIPTION

[0016] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0017] like Figure 1-Figure 11 The magnetic clamp type emergency break valve shown in the figure comprises two valve bodies 1, the inner walls of the two valve bodies 1 are provided with grooves 2, the tops of the two valve bodies 1 are fixedly connected with fixing sleeves 3, a limiting mechanism is provided between the two fixing sleeves 3, a quick blocking mechanism is provided at the tops of the two fixing sleeves 3, and a magnetic clamp mechanism is provided between the two valve bodies 1. The limiting mechanism can make the valve plate 4 stuck in the fixing sleeve 3, so as to avoid blocking the flow of oil and improve the oil transportation efficiency. The quick blocking mechanism can make the valve plate 4 quickly stuck in the groove 2 to avoid the valve plate 4 from jumping, so as to quickly block the valve plate 4 and reduce the loss of oil. The magnetic clamp mechanism can quickly complete the break process in the event of an accident, and a strong magnet replaces the traditional breaking bolt or wire rope to achieve lossless break. After breaking, there is no need to replace parts, and the parts can be reused to improve the use effect. like Figure 4 , Fig. 9As shown, the limiting mechanism includes a valve plate 4 arranged inside the fixing sleeve 3, one end of the fixing sleeve 3 on one side is fixedly connected to a fixing plate 5, both sides of the bottom end of the fixing plate 5 are slidably connected to slide plates 6, two slide plates 6 are fixedly connected to racks 7 at one end close to each other, and two racks 7 are fixedly connected to limiting posts 8 at one end away from each other, and the two limiting posts 8 penetrate the fixing sleeve 3, and two valve plates 4 are provided with limiting grooves 9 at one end close to each other, and the limiting posts 8 are inserted into the limiting grooves 9 to make the valve plates 4 stuck in the fixing sleeve 3, thereby reducing the resistance to the flow of oil and improving the transportation efficiency of oil; like Figure 2 , Fig.11 As shown, the magnetic clamp mechanism includes two clamp bodies 35, the bottom ends of the two clamp bodies 35 are rotatably connected with a connecting plate, the tops of the two clamp bodies 35 are respectively fixedly connected with a first fixing block 10 and a second fixing block 11, the end of the second fixing block 11 away from the first fixing block 10 is fixedly connected with a first magnet 12, the end of the first fixing block 10 away from the second fixing block 11 is fixedly connected with a first spring 13, the other end of the first spring 13 is fixedly connected with a circular block 14, the other end of the circular block 14 is fixedly connected with a second magnet 15 with a different magnetic property from the first magnet 12, and one end of the circular block 14 corresponds to the inner end of the first spring 13. The side is fixedly connected with a latch 16 connecting the first fixing block 10 and the second fixing block 11 together, and the first magnet 12 and the second magnet 15 attract each other to fix the latch 16. When it is necessary to pull it off, when the loading and unloading arm is abnormally stretched by external force, the angle between the outer arm and the outrigger arm of the loading and unloading arm exceeds the set value (≥160°), and the angle sensor on the loading and unloading arm interlocks the magnetic interference device, so that the first magnet 12 and the second magnet 15 temporarily lose their magnetism. At this time, the first spring 13 sleeved on the latch 16 is no longer subjected to the clamping force, and the latch 16 is ejected by its own elastic force, so that the clamp body 35 is opened, and the pull-off valve is pulled off.

[0018] like Figure 4 , Figure 6 As shown, the limiting mechanism also includes a rotating shaft 17 rotatably connected to the middle of the bottom end of the fixing plate 5, a gear 18 is fixedly connected to the outer wall of the rotating shaft 17, the gear 18 is meshed and connected with the two racks 7, and a placement groove 19 for placing the fixing plate 5 is opened at one end of the other fixing sleeve 3. The gear 18 can be limited by the setting of the rotating shaft 17, so that the rack 7 can be moved synchronously, so that the limiting column 8 can be moved at the same time, and the limiting operation is released.

[0019] like Figure 2 , Figure 4 , Figure 5As shown, the limiting mechanism also includes a square sleeve 20 fixedly connected to the bottom end of the rack 7 on one side, a square column 21 is arranged on the inner wall of the square sleeve 20, a second spring 22 is fixedly connected between the square column 21 and the square sleeve 20, and a clamping groove 23 for limiting the square column 21 is provided on the top of the circular block 14. The square column 21 can move in the square sleeve 20, and the square column 21 can be clamped in the clamping groove 23 by the second spring 22, so the square column 21 can be moved with the circular block 14 when it moves, so the limit of the valve plate 4 can be released synchronously when the limit of the clamp body 35 is contacted, and the loss of oil can be reduced due to the simultaneous operation.

[0020] like Figure 6 , Figure 7 As shown, the magnetic clamp mechanism also includes a fixing ring 24 fixedly connected to the side of the outer wall of the valve body 1 close to each other, and the outer walls of the two fixing rings 24 close to each other are fixedly connected with a trapezoidal ring 25, and the four corners of one end of the fixing ring 24 on one side are fixedly connected with positioning columns 26, and the position corresponding to the positioning column 26 at one end of the fixing ring 24 on the other side is provided with a positioning groove 27, and the diameter of the upper side positioning column 26 is larger than the diameter of the lower side positioning column 26. The valve body 1 can be docked with the cooperation of the positioning column 26 and the positioning groove 27. Since the diameters of the positioning columns 26 on the upper and lower sides are different, the misalignment during docking can be prevented, and the docking efficiency can be improved. The trapezoidal ring 25 is adapted to the trapezoidal groove in the clamp body 35, so that the installation is firm and will not be accidentally pulled off during normal loading and unloading.

[0021] like Figure 7 , Figure 8 , Fig. 9As shown, the quick blocking mechanism includes a telescopic plate 28 fixedly connected to the top of the valve plate 4, the two telescopic plates 28 respectively penetrate the two fixed sleeves 3, and one end of the two telescopic plates 28 is provided with a blocking groove 29. The quick blocking mechanism also includes a blocking block 30 fixedly connected to one side of the top of the fixed sleeve 3, and the two blocking blocks 30 are provided with a telescopic groove 31 at one end close to the telescopic plate 28. The inner walls of the two telescopic grooves 31 are provided with telescopic rods 32, and the thickness of the two telescopic rods 32 is less than the thickness of the blocking groove 29. A third spring 33 is fixedly connected between the two groups of telescopic rods 32 and the telescopic grooves 31, and the other ends of the two telescopic rods 32 are fixedly connected with circular columns 34, and the two circular columns 34 respectively penetrate the two blocking blocks 30, and the other ends of the two circular columns 34 are fixedly connected with pulling blocks. The telescopic plate 28 can move the valve plate 4 up and down, so the valve plate 4 can be placed in the fixed sleeve 3 when in use to avoid affecting the flow and transportation of oil. The cooperation of the blocking groove 29 and the telescopic rod 32 can quickly block the valve plate 4 when the valve plate 4 moves down, and make the valve plate 4 quickly stuck in the groove 2 to prevent the valve plate 4 from jumping, so that the oil transportation can be quickly cut off to avoid the loss of excess oil. The setting of the third spring 33 can make the telescopic rod 32 inserted into the blocking groove 29 to complete the limit operation.

[0022] Working principle: First, before use, the telescopic plate 28 can be pulled upward to move the valve plate 4 upward. At this time, due to the cooperation of the rotating shaft 17 and the gear 18, the racks 7 and the slide plate 6 on both sides can move synchronously, so that the limiting column 8 can be inserted into the limiting groove 9 synchronously to complete the limiting of the valve plate 4. Therefore, the valve plate 4 can be stuck in the fixing sleeve 3, which can reduce the resistance when transporting oil and improve the transportation efficiency; When it is necessary to break the valve, when the loading and unloading arm is abnormally stretched by external force, the angle between the outer arm of the loading and unloading arm and the outrigger arm exceeds the set value ≥ 160°, and the angle sensor on the loading and unloading arm interlocks the magnetic interference device, so that the first magnet 12 and the second magnet 15 temporarily lose their magnetism. At this time, the first spring 13 sleeved on the latch 16 is no longer subjected to the compression force, and the latch 16 is ejected by its own elastic force, so that the clamp body 35 is opened, and the valve bodies 1 on both sides are separated, and the valve body 1 on one side will move, thereby realizing the breaking of the break valve, realizing non-destructive breaking, and no need to replace parts after breaking, and the break valve can be reused, which improves the use effect; Furthermore, when the latch 16 pops out, it will move the circular block 14 to one side, and then move the square column 21 and the square sleeve 20 to one side, and move the rack 7 on one side. Due to the existence of the rotating shaft 17 and the gear 18, the rack 7 on the other side can be moved synchronously, so the limiting columns 8 on both sides move synchronously, and the limiting of the valve plate 4 is released. The valve plate 4 is stuck in the groove 2 by the gravity of the valve plate 4 itself, and the oil is blocked; When the valve plate 4 moves downward, the resetting action of the third spring 33 can make the telescopic rod 32 stuck in the blocking groove 29, so as to limit the telescopic plate 28, thereby preventing the valve plate 4 from jumping when moving downward, so as to quickly complete the blocking operation and reduce the loss of oil.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A magnetic clamp type emergency breakaway valve, comprising two valve bodies (1), characterized in that: The inner walls of the two valve bodies (1) are each provided with a groove (2); the top ends of the two valve bodies (1) are each fixedly connected with a fixing sleeve (3); a limiting mechanism is provided between the two fixing sleeves (3); the top ends of the two fixing sleeves (3) are provided with a quick blocking mechanism; and a magnetic clamp mechanism is provided between the two valve bodies (1); The limiting mechanism comprises a valve plate (4) arranged inside the fixing sleeve (3); one end of the fixing sleeve (3) is fixedly connected to a fixing plate (5); both sides of the bottom end of the fixing plate (5) are slidably connected to slide plates (6); two slide plates (6) are fixedly connected to racks (7) at one end close to each other; two racks (7) are fixedly connected to limiting columns (8) at one end away from each other; the two limiting columns (8) penetrate the fixing sleeve (3); two ends of the valve plates (4) close to each other are provided with limiting grooves (9); the limiting columns (8) are inserted into the limiting grooves (9) so that the valve plates (4) are stuck in the fixing sleeve (3) to reduce the resistance of oil flow; The magnetic clamp mechanism comprises two clamp bodies (35), the bottom ends of the two clamp bodies (35) are rotatably connected to a connecting plate, the top ends of the two clamp bodies (35) are respectively fixedly connected to a first fixing block (10) and a second fixing block (11), one end of the second fixing block (11) away from the first fixing block (10) is fixedly connected to a first magnet (12), one end of the first fixing block (10) away from the second fixing block (11) is fixedly connected to a first spring (13), the other end of the first spring (13) is fixedly connected to a circular block (14), the other end of the circular block (14) is fixedly connected to a second magnet (15) having a different magnetic property from the first magnet (12), one end of the circular block (14) is fixedly connected to a latch (16) for connecting the first fixing block (10) and the second fixing block (11) together, and the first magnet (12) and the second magnet (15) attract each other to fix the latch (16).

2. The magnetic clamp type emergency breakaway valve according to claim 1, characterized in that: The limiting mechanism further comprises a rotating shaft (17) rotatably connected to the middle of the bottom end of the fixing plate (5), a gear (18) being fixedly connected to the outer wall of the rotating shaft (17), the gear (18) being meshingly connected to the two racks (7), and a placement groove (19) for placing the fixing plate (5) is formed at one end of the other fixing sleeve (3).

3. The magnetic clamp type emergency breakaway valve according to claim 2, characterized in that: The limiting mechanism further comprises a square sleeve (20) fixedly connected to the bottom end of the rack (7) on one side, a square column (21) is arranged on the inner wall of the square sleeve (20), a second spring (22) is fixedly connected between the square column (21) and the square sleeve (20), and a slot (23) for limiting the square column (21) is provided at the top end of the circular block (14).

4. The magnetic clamp type emergency breakaway valve according to claim 1, characterized in that: The magnetic clamp mechanism further comprises a fixing ring (24) fixedly connected to the side of the outer wall of the valve body (1) close to each other, and a trapezoidal ring (25) is fixedly connected to the side of the outer walls of the two fixing rings (24) close to each other.

5. The magnetic clamp type emergency breakaway valve according to claim 4, characterized in that: Four corners of one end of the fixing ring (24) are fixedly connected to positioning posts (26), and one end of the fixing ring (24) on the other side is provided with positioning grooves (27) at positions corresponding to the positioning posts (26), and the diameter of the upper positioning posts (26) is greater than that of the lower positioning posts (26).

6. The magnetic clamp type emergency breakaway valve according to claim 1, characterized in that: The rapid blocking mechanism comprises a telescopic plate (28) fixedly connected to the top end of the valve plate (4), the two telescopic plates (28) respectively passing through the two fixed sleeves (3), and a blocking groove (29) is formed at one end of the two telescopic plates (28).

7. The magnetic clamp type emergency breakaway valve according to claim 6, characterized in that: The rapid blocking mechanism further comprises a blocking block (30) fixedly connected to one side of the top end of the fixing sleeve (3), and the two blocking blocks (30) are each provided with a telescopic groove (31) at one end close to the telescopic plate (28), and the inner walls of the two telescopic grooves (31) are each provided with a telescopic rod (32), and the thickness of the two telescopic rods (32) is less than the thickness of the blocking groove (29).

8. The magnetic clamp type emergency breakaway valve according to claim 7, characterized in that: A third spring (33) is fixedly connected between the two groups of telescopic rods (32) and the telescopic slots (31); the other ends of the two telescopic rods (32) are fixedly connected to a circular column (34); the two circular columns (34) respectively penetrate two blocking blocks (30); and the other ends of the two circular columns (34) are fixedly connected to a pulling block.

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