Flat plate type rupture disk high-back-pressure-resistant device for terminator reaction kettle

Abstract

The utility model discloses a flat plate type rupture disk high back pressure resistant device for a terminator reaction kettle, which relates to the technical field of rupture disks and comprises a flat plate type rupture disk, an upper clamp holder, a lower clamp holder, a vacuum support, a back pressure bracket, a rupture disk lining film and a sealing gasket. The flat plate type rupture disk and the back pressure bracket which are assembled and welded into a whole are placed between the upper clamping device and the lower clamping device, and the vacuum bracket and the back pressure bracket are matched with each other to resist higher back pressure, so that the rupture disk can be protected from being damaged, and the rupture disk can act to achieve the purpose of normal release; the utility model also has the advantages of sustainable utilization, prolonged service life of the rupture disk, easiness in processing and cost saving.

Description

Technical Field

[0001] The utility model relates to the technical field of bursting discs, in particular to a flat-plate bursting disc high back pressure resistant device for a terminator reactor. Background Art

[0002] A terminator is a chemical substance used in the process of polymer chemical chain polymerization. It can react with initiating free radicals and growing free radicals, making them inactive, thereby terminating the growth of the chain and stopping the polymerization reaction. It acts as a terminator for free radicals. By terminating the polymerization reaction in a timely manner, high-quality polymer products with uniform molecular weight and stable molecular structure can be obtained.

[0003] In some chemical production reactors, in order to prevent the occurrence of automatic polymerization of monomers, terminators need to be added to the reactor. After the terminator is added to the reactor, an instantaneous high back pressure will be generated. If the instantaneous high back pressure is not controlled, it will impact the pipes and equipment connected to the reactor and cause damage, thereby affecting the smooth progress of production.

[0004] A circular flat plate extractable low-pressure relief bursting disc device with application number: CN201720930493.8 can only be used in low-pressure occasions and cannot be used in sites with instantaneous high back pressure. Utility Model Content

[0005] The purpose of the utility model is to provide a flat-plate bursting disc high back pressure resistant device for a terminator reactor, so as to solve the problem proposed in the above background technology that after adding the terminator into the reactor, an instantaneous high back pressure will be generated. If the instantaneous high back pressure is not controlled, the instantaneous high back pressure will impact the pipes and equipment connected to the reactor and cause damage, thereby affecting the smooth progress of production.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flat-plate bursting disc high back pressure resistant device for a terminator reactor, comprising a flat-plate bursting disc and an upper clamp arranged above the flat-plate bursting disc and a lower clamp arranged below the flat-plate bursting disc, a vacuum bracket welded and fixed on the inner diameter top of the lower clamp, and a back pressure bracket welded on the bottom surface of the flat-plate bursting disc; the flat-plate bursting disc is disc-shaped and is provided with a coaxial annular fragment seam; the upper clamp comprises a cylindrical clamping outer tube, an upper clamping baffle, an upper clamping fixing plate, a clamping baffle ring, and a plurality of fixing screw holes; the lower clamp comprises a vertical cylindrical clamping inner tube, a lower clamping fixing plate, and a plurality of bolt through holes; the vacuum bracket comprises a transverse bracket and a longitudinal bracket; a bracket through-slit with a width of 0.2 mm is provided in an annular manner on the back-pressure bracket, a through-slit stop hole is provided at both ends of the bracket through-slit, and the center of the back-pressure bracket is at the center of a circle of the same diameter and three equidistant exhaust holes are provided on both sides of the center of the circle.

[0007] Preferably, the flat-plate bursting disc is a flat-plate bursting disc used in the prior art.

[0008] Preferably, the upper clamp includes a vertical cylindrical clamping outer tube and an upper clamping baffle extending radially inward is arranged at the top of its inner diameter, an upper clamping fixing plate extending radially outward is arranged at the bottom end of the outer wall of the clamping outer tube and a clamping baffle ring extending vertically downward is arranged at the edge of its bottom surface, and a plurality of fixing screw holes are evenly distributed on the same circumference on the inner side of the clamping baffle ring on the bottom surface of the upper clamping fixing plate.

[0009] Preferably, the lower clamp comprises a vertical cylindrical clamping inner tube which can be inserted into the inner side of the clamping outer tube, and a lower clamping fixing plate extending radially outward is provided at the bottom end of its outer wall, and a plurality of bolt through holes coaxial with the fixing screw holes are provided on the lower clamping fixing plate, and the upper clamp and the lower clamp are connected into one by bolts.

[0010] Preferably, the vacuum support is a metal support cross-welded into one, including a transverse support and a longitudinal support, the vertical side surfaces at both ends of the transverse support and the longitudinal support are processed with welding grooves, and the top end of the inner diameter of the clamping inner tube is provided with a welding groove matching the welding groove, a rectangular upper notch with a height of half its vertical height is provided at the center of the top surface of the transverse support, and a rectangular lower notch with a height of half its vertical height is provided at the center of the bottom surface of the longitudinal support.

[0011] Preferably, the back pressure bracket is welded together with the flat-plate bursting disc, the back pressure bracket is a disc-shaped structure having the same diameter as the flat-plate bursting disc, and the diameter of the bracket through-slit is smaller than the diameter of the annular bursting disc slit.

[0012] Preferably, the height of the vacuum support is proportional to the pressure value of the back pressure it needs to withstand; the thickness of the back pressure support is proportional to the pressure value of the back pressure it needs to withstand; the diameter of the through-slit stop hole is inversely proportional to the pressure value of the back pressure that the back pressure support needs to withstand, and the spacing between the two through-slit stop holes is proportional to the pressure value of the back pressure that the back pressure support needs to withstand.

[0013] Preferably, the size and hole spacing of the exhaust holes can be adjusted according to the size of the flat-plate bursting disc.

[0014] Preferably, a bursting disc lining film is bonded and fixed to the top surface of the flat-plate bursting disc by using double-sided tape, and a sealing gasket is bonded and fixed between the top surface of the bursting disc lining film and the upper clamping fixing plate by using double-sided tape.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model places the flat-plate bursting disc and the back pressure bracket which are welded into one body between the upper and lower clamps, and uses the vacuum bracket and the back pressure bracket to cooperate with each other to withstand higher back pressure, which can not only protect the bursting disc from being damaged, but also enable the bursting disc to operate to achieve the purpose of normal discharge; the utility model also has the advantages of continuous utilization, extended service life of the bursting disc, easy processing and cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a bottom view of the structure of the utility model;

[0018] Figure 2 for Figure 1 AA section view in;

[0019] Figure 3 A cross-sectional view of the lower gripper with a vacuum support;

[0020] Figure 4 Bottom view of the lower gripper with vacuum support;

[0021] Figure 5 is a schematic diagram of a transverse support;

[0022] Figure 6 It is a schematic diagram of the longitudinal bracket;

[0023] Figure 7 The schematic diagram of the welding completion of the back pressure bracket and the flat-type bursting disc;

[0024] Figure 8 for Figure 7 A cross-sectional view of BB in FIG.

[0025] Fig. 9 This is a bottom view of the back pressure bracket;

[0026] In the figure: flat bursting disc -1, annular bursting disc seam -11, upper clamp -2, clamping outer tube -21, upper clamping baffle -22, upper clamping fixing plate -23, clamping baffle ring -24, fixing screw hole -25, lower clamp -3, clamping inner tube -31, lower clamping fixing plate -32, bolt through hole -33, vacuum bracket -4, transverse bracket -41, longitudinal bracket -42, welding groove -43, rectangular upper notch -44, rectangular lower notch -45, back pressure bracket -5, bracket through-slit -51, through-slit stop hole -52, exhaust hole -53, bursting disc lining membrane -6, sealing gasket -7. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Please refer to Figure 1-9 , Figure 1 This is a bottom view of the structure of the utility model; Figure 2 for Figure 1 AA section view in; Figure 3 A cross-sectional view of the lower gripper with a vacuum support; Figure 4 Bottom view of the lower gripper with vacuum support; Figure 5 is a schematic diagram of a transverse support; Figure 6 It is a schematic diagram of the longitudinal bracket; Figure 7 The schematic diagram of the welding completion of the back pressure bracket and the flat-type bursting disc; Figure 8 for Figure 7 A cross-sectional view of BB in FIG. Fig. 9 This is the bottom view of the back pressure bracket.

[0029] The utility model provides a flat-plate bursting disc high back pressure resistance device for a terminator reactor, which is installed on the reactor in an embedded manner and is used to resist high back pressure and protect the bursting disc from being damaged when a terminator is added into the reactor to generate instantaneous high back pressure, and can also ensure the normal operation of the bursting disc to achieve the purpose of normal discharge; it comprises a flat-plate bursting disc 1 used as a main pressure control element, an upper clamp 2 is arranged above the flat-plate bursting disc 1, and a lower clamp 3 is arranged below the flat-plate bursting disc 1, which are used to clamp and fix the flat-plate bursting disc 1; a vacuum bracket 4 is welded and fixed to the top of the inner diameter of the lower clamp 3; a back pressure bracket 5 is welded on the bottom surface of the flat-plate bursting disc 1, and the effect of resisting high back pressure can be achieved through the coordinated use of the vacuum bracket 4 and the back pressure bracket 5.

[0030] The flat-plate bursting disc 1 adopts the flat-plate bursting disc used in the prior art, which is in a disc shape as a whole and is provided with a coaxial annular bursting disc seam 11 for use in blasting when pressure relief is required.

[0031] The upper clamp 2 includes a vertically arranged cylindrical clamping outer tube 21, an upper clamping baffle 22 extending radially inward is arranged at the top of the inner diameter of the clamping outer tube 21, an upper clamping fixing plate 23 extending radially outward is arranged at the bottom end of the outer wall of the clamping outer tube 21, and a clamping baffle ring 24 extending vertically downward is arranged on the bottom surface of the upper clamping fixing plate 23 along its outer edge, and a plurality of fixing screw holes 25 are evenly distributed on the same circumference on the inner side of the clamping baffle ring 24 on the bottom surface of the upper clamping fixing plate 23.

[0032] The lower clamp 3 includes a vertically arranged cylindrical clamping inner tube 31, which can be inserted into the inner side of the clamping outer tube 21. The bottom end of the outer wall of the clamping inner tube 31 is provided with a lower clamping fixing plate 32 extending radially outward. A plurality of bolt through holes 33 coaxial with the fixing screw holes 25 are provided on the lower clamping fixing plate 32, and bolts are used to connect the upper clamp 2 and the lower clamp 3 into one.

[0033] The vacuum support 4 is a metal support that is cross-welded into one piece and is welded and fixed in the inner diameter of the lower clamp 3, and the height of the vacuum support 4 is proportional to the pressure value of the back pressure it needs to withstand; it includes a transverse support 41 and a longitudinal support 42, and the vertical side surfaces at both ends of the transverse support 41 and the longitudinal support 42 are processed with welding grooves 43, and at the same time, the top end of the inner diameter of the clamping inner tube 31 is provided with a welding groove matching the welding groove 43, so as to weld and fix the transverse support 41 and the longitudinal support 42 to the clamping inner tube 31; a rectangular upper notch 44 with a height of half its vertical height is provided at the center of the top surface of the transverse support 41, and a rectangular lower notch 45 with a height of half its vertical height is provided at the center of the bottom surface of the longitudinal support 42, and the transverse support 41 and the longitudinal support 42 form a vacuum support 4 through the meshing connection of the rectangular upper notch 44 and the rectangular lower notch 45.

[0034] The back pressure bracket 5 is welded together with the flat-plate bursting disc 1, and its thickness is proportional to the pressure value of the back pressure it needs to withstand; the back pressure bracket 5 is a disc-shaped structure with a diameter equal to that of the flat-plate bursting disc 1, and a bracket through-slot 51 with a width of 0.2 mm is provided in an annular manner thereon, and a through-slot stop hole 52 is provided at both ends of the bracket through-slot 51, the diameter of the through-slot stop hole 52 is inversely proportional to the pressure value of the back pressure that the back pressure bracket 5 needs to withstand, and the spacing between the two through-slot stop holes 52 is proportional to the pressure value of the back pressure that the back pressure bracket 5 needs to withstand; and the diameter of the annular bracket through-slot 51 is smaller than the diameter of the annular fragment slit 11; three equidistant exhaust holes 53 are provided at the center of a circle of the same diameter and on both sides of the center of the circle, and the size and hole spacing of the exhaust holes 53 can be appropriately adjusted according to the size of the flat-plate bursting disc 1.

[0035] In addition, a bursting disc lining membrane 6 is bonded and fixed to the top surface of the flat bursting disc 1 using double-sided tape to protect the flat bursting disc 1, and a sealing gasket 7 is bonded and fixed between the top surface of the bursting disc lining membrane 6 and the upper clamping fixing plate 23 using double-sided tape to ensure that the flat bursting disc 1 remains stable and cooperates with the upper clamp 2 and the lower clamp 3 to achieve a sealing effect when there is no high back pressure in the reactor.

[0036] The utility model places the flat-plate bursting disc and the back pressure bracket which are welded into one body between the upper and lower clamps, and uses the vacuum bracket and the back pressure bracket to cooperate with each other to withstand higher back pressure, which can not only protect the bursting disc from being damaged, but also enable the bursting disc to operate to achieve the purpose of normal discharge; the utility model also has the advantages of continuous utilization, extended service life of the bursting disc, easy processing and cost saving.

[0037] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. A flat-plate bursting disc high back pressure resistant device for a terminator reactor, characterized in that: The invention comprises a flat-plate bursting disc (1) and an upper clamp (2) is arranged above the flat-plate bursting disc and a lower clamp (3) is arranged below the flat-plate bursting disc. A vacuum support (4) is welded and fixed to the top of the inner diameter of the lower clamp (3). A back pressure bracket (5) is welded to the bottom surface of the flat-plate bursting disc (1). The flat-plate bursting disc (1) is disc-shaped and is provided with a coaxial annular bursting disc seam (11). The upper clamp (2) comprises a cylindrical clamping outer tube (21), an upper clamping baffle (22), an upper clamping fixing plate (23), a clamping baffle ring (24), a plurality of fixing screw holes ( 25); the lower clamp (3) comprises a vertical cylindrical clamping inner tube (31), a lower clamping fixing plate (32), and a plurality of bolt through holes (33); the vacuum support (4) comprises a transverse support (41) and a longitudinal support (42); the back pressure bracket (5) is provided with a bracket through slit (51) with a width of 0.2 mm in an annular shape, and a through slit stop hole (52) is provided at both ends of the bracket through slit (51); the center of the back pressure bracket (5) is located at the center of a circle with the same diameter, and three equidistant exhaust holes (53) are provided on both sides of the center of the circle.

2. The flat-plate bursting disc high back pressure resistant device for a terminator reactor according to claim 1, characterized in that: The flat-plate bursting disc (1) is a flat-plate bursting disc used in the prior art.

3. The flat-plate bursting disc high back pressure resistant device for a terminator reactor according to claim 2, characterized in that: The upper clamp (2) comprises a vertical cylindrical clamping outer tube (21) and an upper clamping baffle (22) extending radially inward is arranged at the top of the inner diameter thereof, an upper clamping fixing plate (23) extending radially outward is arranged at the bottom end of the outer wall of the clamping outer tube (21) and a clamping baffle ring (24) extending vertically downward is arranged at the edge of the bottom surface thereof, and a plurality of fixing screw holes (25) are evenly distributed on the same circumference on the inner side of the clamping baffle ring (24) on the bottom surface of the upper clamping fixing plate (23).

4. The flat-plate bursting disc high back pressure resistant device for a terminator reactor according to claim 3, characterized in that: The lower clamp (3) comprises a vertical cylindrical clamping inner tube (31) which can be inserted into the inner side of the clamping outer tube (21), and a lower clamping fixing plate (32) which radially extends outward is provided at the bottom end of the outer wall thereof, and a plurality of bolt through holes (33) which are coaxial with the fixing screw holes (25) are provided on the lower clamping fixing plate (32), and the upper clamp (2) and the lower clamp (3) are connected into one body by bolts.

5. The flat-plate bursting disc high back pressure resistant device for terminator reactor according to claim 4, characterized in that: The vacuum support (4) is a metal support cross-welded into one body, comprising a transverse support (41) and a longitudinal support (42), the vertical side surfaces at both ends of the transverse support (41) and the longitudinal support (42) are processed with welding grooves (43), and the inner diameter top end of the clamping inner tube (31) is provided with a welding groove matching the welding groove (43), the top surface center of the transverse support (41) is provided with a rectangular upper notch (44) with a height of half its vertical height, and the bottom surface center of the longitudinal support (42) is provided with a rectangular lower notch (45) with a height of half its vertical height.

6. The flat-plate bursting disc high back pressure resistant device for a terminator reactor according to claim 5, characterized in that: The back pressure bracket (5) is welded together with the flat-plate bursting disc (1), the back pressure bracket (5) is a disc-shaped structure having a diameter equal to that of the flat-plate bursting disc (1), and the diameter of the bracket through-slit (51) is smaller than the diameter of the annular bursting disc slit (11).

7. The flat-plate bursting disc high back pressure resistant device for a terminator reactor according to claim 6, characterized in that: The height of the vacuum support (4) is proportional to the pressure value of the back pressure it needs to withstand; the thickness of the back pressure bracket (5) is proportional to the pressure value of the back pressure it needs to withstand; the diameter of the through-slit stop hole (52) is inversely proportional to the pressure value of the back pressure that the back pressure bracket (5) needs to withstand, and the distance between the two through-slit stop holes (52) is proportional to the pressure value of the back pressure that the back pressure bracket (5) needs to withstand.

8. The flat-plate bursting disc high back pressure resistant device for a terminator reactor according to claim 7, characterized in that: The size and hole spacing of the exhaust holes (53) can be adjusted according to the size of the flat-plate bursting disc (1).

9. The flat-plate bursting disc high back pressure resistant device for a terminator reactor according to claim 8, characterized in that: A bursting disc lining membrane (6) is bonded and fixed to the top surface of the flat-plate bursting disc (1) using double-sided adhesive tape, and a sealing gasket (7) is bonded and fixed between the top surface of the bursting disc lining membrane (6) and the upper clamping and fixing plate (23) using double-sided adhesive tape.

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