Center-opening flat plate slotted bursting disc safety device

Abstract

The present invention relates to a central opening type flat plate slotted bursting disc safety device, comprising a lower clamp, an upper clamp I, an upper clamp II and a flat plate slotted bursting disc; the upper clamp I and the upper clamp II are both annular structures, and are fixed on the lower clamp in the form of inner-outer circle distribution, so that an annular belt-type pressure relief zone is formed between the upper clamp I and the upper clamp II; the lower clamp is provided with a vent hole at a corresponding position of the annular belt-type pressure relief zone; the flat plate slotted bursting disc is clamped between the upper clamp I, the upper clamp II and the lower clamp, and the medium acts on the bursting disc through the vent hole, and when the force reaches the bursting pressure of the bursting disc, the slot of the flat plate slotted bursting disc at the corresponding position of the vent hole is stretched and damaged and the pressure is released. Compared with the prior art, the present invention realizes that the equipment parts pass through the center of the bursting disc safety device, increases the flexibility of equipment design, and has good back pressure resistance and sealing performance.

Description

Technical Field

[0001] The invention relates to the technical field of safety accessories, in particular to a central opening type flat plate slotted bursting disc safety device. Background Art

[0002] Bursting disc devices are now widely used in equipment that needs to be protected in industries such as chemical, pharmaceutical, environmental protection, steel, and electric power. Bursting disc devices are emergency overpressure relief devices that are driven by pressure difference and are not automatically closed. They are mainly used to protect pressure vessels, pipelines, or other closed systems from damage caused by excessive overpressure or vacuum.

[0003] Flat slotted bursting discs are suitable for working conditions with gas and liquid media and medium and low bursting pressures, and the lowest bursting pressure can reach 1KPa.

[0004] As the country pays more and more attention to production safety, more types of equipment are in urgent need of installing bursting disc safety devices. Some of these equipment require that related parts can directly pass through the center of the bursting disc safety device. However, due to the overall structural design of the bursting disc, the existing bursting disc safety devices cannot achieve through-type installation in the middle, such as the technical solutions in CN210372185U and CN207064748U. This also creates great technical obstacles to the matching of the current bursting disc safety device and the equipment, as well as the design process of the bursting disc safety device. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a central opening flat plate slotted bursting disc safety device, which achieves coordination with the equipment through the bursting disc safety device with an integral configuration of inner and outer rings.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The purpose of this application is to protect a central opening type flat plate slotted bursting disc safety device, comprising a lower holder, an upper holder I, an upper holder II and a flat plate slotted bursting disc;

[0008] The upper clamp I and the upper clamp II are both annular structures and are fixed on the lower clamp in the form of inner-outer ring distribution, so that an annular belt-type pressure relief zone is formed between the upper clamp I and the upper clamp II;

[0009] The lower holder is provided with a vent hole at a position corresponding to the annular belt-shaped pressure relief zone;

[0010] The flat plate slit type bursting disc is clamped between the upper clamp I, the upper clamp II and the lower clamp, and the medium acts on the bursting disc through the vent hole. When the force reaches the bursting pressure of the bursting disc, the slit of the flat plate slit type bursting disc at the position corresponding to the vent hole is stretched and damaged to release the pressure;

[0011] Parts of external equipment pass through the lower holder, the flat slotted bursting disc, and the middle of the upper holder II, so as to realize the center-through installation of the bursting disc safety device.

[0012] Furthermore, the upper clamp I and the upper clamp II are co-centrically arranged.

[0013] Furthermore, the ventilation holes are arranged in a ring array.

[0014] Furthermore, the lower clamp is provided with a first installation area, a second installation area, and a third installation area radially from the outside to the inside, which are matched with the equipment, the upper clamp I, and the upper clamp II respectively.

[0015] Furthermore, threaded through holes are evenly distributed on the first installation area, and the threaded through holes can be connected to the equipment flange through fasteners.

[0016] Furthermore, a positioning groove is provided on the second installation area;

[0017] The upper clamp 1 is provided with a positioning flange matching the positioning groove, and the positioning flange can be embedded in the positioning groove to achieve horizontal limiting of the upper clamp 1.

[0018] Furthermore, the second installation area is evenly provided with threaded blind holes, and the upper clamp I is provided with through holes matching the threaded blind holes.

[0019] Furthermore, threaded blind holes are evenly distributed on the third installation area;

[0020] A threaded through hole is provided in the middle of the flat slotted bursting disc;

[0021] The upper clamp II is provided with a countersunk through hole;

[0022] The fastener penetrates the threaded blind hole, the threaded through hole and the countersunk through hole to achieve clamping and fixing of the middle part of the flat slotted bursting disc.

[0023] Furthermore, the second installation area and the third installation area are respectively provided with an outer peripheral sealing groove and an inner peripheral sealing groove;

[0024] The outer peripheral sealing groove and the inner peripheral sealing groove are respectively provided with a sealing ring I and a sealing ring II;

[0025] The sealing ring I and the sealing ring II respectively realize the compression and sealing of the outer ring and the inner ring of the flat slotted bursting disc under the clamping force of the lower clamp, the upper clamp I and the upper clamp II.

[0026] Furthermore, the diameter of the positioning groove matches the outer diameter of the flat slotted bursting disc, the flat slotted bursting disc is provided with a center hole, and the inner diameter of the upper clamp II matches the center hole of the flat slotted bursting disc.

[0027] Compared with the prior art, the present invention has the following technical advantages:

[0028] 1. This technical solution designs a bursting disc safety device with an integral inner and outer ring configuration, with a through hole in the center to facilitate the equipment parts to pass directly through the middle of the bursting disc safety device, so that the equipment can obtain higher flexibility in design, reduce design difficulty, simplify structure, and save costs.

[0029] 2. The lower holder in this technical solution is provided with two sealing ring grooves, which greatly improves the sealing performance of the bursting disc safety device and avoids safety accidents caused by leakage of toxic and harmful gases.

[0030] 3. The lower holder is provided with a vent structure, which makes the flat slotted bursting disc have a stronger ability to resist back pressure and expands the application scope of the bursting disc safety device.

[0031] 4. The bursting disc safety device in this technical solution is an integral whole, easy to install, and not easily damaged during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a top view of the structural diagram of the central opening type flat plate slotted bursting disc safety device in the technical solution;

[0033] Figure 2 for Figure 1 AA cross-sectional structural diagram;

[0034] Figure 3 This is a schematic diagram of the top view of the lower clamp in this technical solution;

[0035] Figure 4 for Figure 3 BB cross-sectional structure diagram;

[0036] Figure 5 Schematic diagram of the cross-sectional structure of the upper clamp 1 in this technical solution;

[0037] Figure 6 This is a schematic diagram of the top structure of the upper clamp II in this technical solution;

[0038] Figure 7 for Figure 6Schematic diagram of CC cross-section structure;

[0039] Figure 8 This is a schematic diagram of the structure of a flat-plate slotted bursting disc in this technical solution.

[0040] In the figure, 1 is a lower clamp, 101 is a large circular plane through hole, 102 is a small circular outer circumferential plane threaded blind hole, 103 is a positioning groove, 104 is an outer circumferential sealing groove, 105 is a vent hole, 106 is an inner circumferential sealing groove, 107 is a small circular inner circumferential plane threaded blind hole, 2 is an upper clamp I, 201 is a uniformly distributed through hole, 202 is a positioning flange, 3 is a hexagonal head bolt, 4 is a sealing ring I, 5 is a flat slotted bursting disc, 501 is a bolt hole, 502 is a center hole, 503 is a slot, 6 is a hexagon socket cylindrical screw, 7 is an upper clamp II, 701 is a countersunk through hole, 702 is a threaded blind hole, and 8 is a sealing ring II. DETAILED DESCRIPTION

[0041] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] The central opening type flat plate slotted bursting disc safety device of the present invention comprises a lower clamp 1, an upper clamp I 2, an upper clamp II 7, a flat plate slotted bursting disc 5, a sealing ring I 4 and a sealing ring II 8, see Figure 1 and Figure 2 .

[0043] From the overall analysis, in this embodiment, the upper clamp I 2 and the upper clamp II 7 are both annular structures, and are fixed on the lower clamp 1 in the form of inner-outer circle distribution, so that an annular belt-type pressure relief zone is formed between the upper clamp I 2 and the upper clamp II 7, and the lower clamp 1 is provided with a vent hole 105 at a corresponding position of the annular belt-type pressure relief zone, and the flat plate slit type bursting disc 5 is clamped between the upper clamp I 2, the upper clamp II 7 and the lower clamp 1. When the force reaches the bursting pressure of the bursting disc, the slit 503 of the flat plate slit type bursting disc 5 at the corresponding position of the vent hole 105 is stretched and damaged and the pressure is released. In specific implementation, the upper clamp I 2 and the upper clamp II 7 are arranged cocentrically, and the vent holes 105 are arranged in an annular array.

[0044] The lower clamp 1, the upper clamp I 2 and the upper clamp II 7 are connected in sequence, the flat slotted bursting disc 5 is installed between the lower clamp 1, the upper clamp I 2 and the upper clamp II 7, the flat slotted bursting disc 5 has a central opening, and the sealing ring I4 and the sealing ring II8 are installed between the lower clamp 1 and the flat slotted bursting disc 5. The parts of the external equipment pass through the lower clamp 1, the flat slotted bursting disc 5 and the middle of the upper clamp II 7 to achieve the center-through installation of the bursting disc safety device. Through the structural design coordination of the central opening of the flat slotted bursting disc 5, i.e., the lower clamp 1, the upper clamp I2 and the upper clamp II 7, the equipment parts pass through the center of the bursting disc safety device, which increases the flexibility of the equipment design. At the same time, it is easy to install, has good back pressure resistance and sealing performance, and is not easily damaged during transportation.

[0045] In this embodiment, in order to achieve the sealing cooperation between the lower clamp 1, the upper clamp I 2, the upper clamp II 7, and the flat slotted bursting disc 5, see Figure 3 and Figure 4 , three installation areas are set on the upper surface of the lower clamp 1, wherein the lower clamp 1 is provided with a first installation area, a second installation area, and a third installation area which are matched with the equipment, the upper clamp I 2, and the upper clamp II 7 respectively along the radial direction from the outside to the inside. The first installation area is evenly provided with threaded through holes, which can be connected to the equipment flange through fasteners. The second installation area is provided with a positioning groove 103, and the upper clamp I 2 is provided with a positioning flange 202 matching the positioning groove 103, and the positioning flange 202 can be embedded in the positioning groove 103 to achieve the horizontal limit of the upper clamp I 2. The second installation area is evenly provided with threaded blind holes, and the upper clamp I 2 is provided with through holes matching the threaded blind holes. The third installation area is evenly distributed with threaded blind holes, the middle part of the flat slotted bursting disc 5 is provided with a threaded through hole, and the upper clamp II 7 is provided with a countersunk through hole. Fasteners penetrate the threaded blind holes, threaded through holes, and countersunk through holes to achieve clamping and fixing of the middle part of the flat slotted bursting disc 5.

[0046] An outer peripheral sealing groove 104 and an inner peripheral sealing groove 106 are respectively provided on the second installation area and the third installation area, and a sealing ring I4 and a sealing ring II8 are respectively provided in the outer peripheral sealing groove 104 and the inner peripheral sealing groove 106. Under the clamping force of the lower clamp 1, the upper clamp I2 and the upper clamp II7, the sealing ring I4 and the sealing ring II8 respectively realize the compression and sealing of the outer ring and the inner ring of the flat-plate slotted bursting disc 5.

[0047] In a specific implementation, a plurality of evenly distributed small circle outer circumferential plane threaded blind holes 102 are provided on the small circle outer circumferential plane of the lower clamp 1, and a plurality of evenly distributed through holes 201 matching the small circle outer circumferential plane threaded blind holes are provided on the upper clamp 12, see Figure 5The lower holder 1 is provided with a plurality of evenly distributed small circle inner circumference plane threaded blind holes 107, and the upper holder II 7 and the flat slotted bursting disc 5 are provided with a plurality of evenly distributed countersunk through holes 701 and bolt holes 501 matching the small circle inner circumference plane threaded blind holes 107, see Figure 7 and 8 , a sealing ring groove 104 is provided on the outer circumferential plane of the small circle of the lower clamp 1, a sealing ring groove 106 is provided on the inner circumferential plane of the small circle of the lower clamp 1, the lower clamp 1, the upper clamp I 2, the upper clamp II 7, the flat slotted bursting disc 5, the sealing ring I4 and the sealing ring II 8 are connected to each other by a hexagonal head bolt 3 and a hexagon socket cylindrical screw 6. The sealing ring I4 and the sealing ring II 8 can effectively ensure the sealing performance on both sides of the bursting disc. The bursting disc safety device is an integral unit, easy to install, and not easily damaged during transportation.

[0048] In specific implementation, the upper clamp II 7 is provided with a plurality of evenly distributed threaded blind holes 702, which are connected to the equipment sealing cover plate. After the hexagon socket cylindrical screw 6 is installed, it will not protrude from the plane of the upper clamp II 7, and there will be no interference when the upper clamp II 7 is connected to the equipment sealing cover plate. The center hole sealing effect can be achieved by adding a sealing ring between the equipment sealing cover plate and the upper clamp II 7.

[0049] The diameter of the lower holder positioning groove 103 matches the outer diameter of the flat slotted bursting disc 5, the flat slotted bursting disc 5 is provided with a center hole 502, and the inner diameter of the upper holder II 7 matches the center hole 502 of the flat slotted bursting disc. After the bursting disc safety device is assembled as a whole, a through hole is provided in the center of the device, and the equipment parts can pass through this through hole.

[0050] The lower clamp 1 is provided with a plurality of evenly distributed vents 105. The equipment pressure enters the bursting disc safety device from the vent 105, reaches the set bursting pressure at the designed bursting temperature, and the flat slit bursting disc 5 bursts normally to release the pressure. The lower clamp 1 of this structure can also withstand a large back pressure to prevent the flat slit bursting disc 5 from being damaged by back pressure. The large circular plane of the lower clamp 1 is provided with a plurality of evenly distributed large circular plane through holes 101, which are interconnected with the equipment flange. In normal use, the lower clamp 1 is connected to the equipment flange by bolts, and the upper clamp II 7 is connected to the equipment sealing cover plate by bolts, and the equipment sealing cover plate plays the role of sealing the central hole of the bursting disc safety device. The equipment pressure enters the device from the vent 105 of the lower clamp and acts on the flat slit bursting disc 5. At the designed bursting temperature, it reaches the designed bursting pressure, and the flat slit bursting disc 5 is stretched and damaged from the slit 503 and releases the pressure, thereby protecting the equipment.

[0051] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A central opening flat plate slotted bursting disc safety device, characterized in that: It comprises a lower holder (1), an upper holder I (2), an upper holder II (7) and a flat-plate slotted bursting disc (5); The upper clamp I (2) and the upper clamp II (7) are both annular structures and are fixed to the lower clamp (1) in an inner-outer ring distribution form, so that an annular belt-type pressure relief zone is formed between the upper clamp I (2) and the upper clamp II (7); The lower holder (1) is provided with a vent hole (105) at a position corresponding to the annular belt-shaped pressure relief zone; The flat plate slit type bursting disc (5) is clamped between the upper clamp I (2), the upper clamp II (7) and the lower clamp (1), and the medium acts on the bursting disc through the vent (105). When the acting force reaches the bursting pressure of the bursting disc, the slit (503) of the flat plate slit type bursting disc (5) at the position corresponding to the vent (105) is stretched and damaged to release the pressure; Parts of the external equipment pass through the lower holder (1), the flat slotted bursting disc (5), and the middle of the upper holder II (7), thereby realizing the center-through installation of the bursting disc safety device; The upper clamp I (2) and the upper clamp II (7) are arranged co-centrically; The vent holes (105) are arranged in a circular array.

2. A central opening flat plate slotted bursting disc safety device according to claim 1, characterized in that: The lower clamp (1) is provided with a first installation area, a second installation area and a third installation area from the outside to the inside in the radial direction, which are matched with the equipment, the upper clamp I (2) and the upper clamp II (7) respectively.

3. A central opening flat plate slotted bursting disc safety device according to claim 2, characterized in that: The first installation area is evenly provided with threaded through holes, and the threaded through holes can be connected to the equipment flange through fasteners.

4. A central opening flat plate slotted bursting disc safety device according to claim 2, characterized in that: The second installation area is provided with a positioning groove (103); The upper clamp 1 (2) is provided with a positioning flange (202) matching the positioning groove (103), and the positioning flange (202) can be embedded in the positioning groove (103) to achieve horizontal limitation of the upper clamp 1 (2).

5. A central opening flat plate slotted bursting disc safety device according to claim 2, characterized in that: The second installation area is evenly provided with threaded blind holes, and the upper clamp 1 (2) is provided with through holes matching the threaded blind holes.

6. A central opening flat plate slotted bursting disc safety device according to claim 2, characterized in that: The third installation area is evenly provided with threaded blind holes; The flat slotted bursting disc (5) has a threaded through hole in the middle; The upper clamp II (7) is provided with a countersunk through hole; The fastener penetrates the threaded blind hole, the threaded through hole, and the countersunk through hole to achieve clamping and fixing of the middle portion of the flat slotted bursting disc (5).

7. A central opening flat plate slotted bursting disc safety device according to claim 2, characterized in that: The second installation area and the third installation area are respectively provided with an outer peripheral sealing groove (104) and an inner peripheral sealing groove (106); The outer peripheral sealing groove (104) and the inner peripheral sealing groove (106) are respectively provided with a sealing ring I (4) and a sealing ring II (8); The sealing ring I (4) and the sealing ring II (8) respectively realize the compression and sealing of the outer ring and the inner ring of the flat slotted bursting disc (5) under the clamping force of the lower clamp (1), the upper clamp I (2) and the upper clamp II (7).

8. A central opening flat plate slotted bursting disc safety device according to claim 4, characterized in that: The diameter of the positioning groove (103) matches the outer diameter of the flat-plate slotted bursting disc (5), the flat-plate slotted bursting disc (5) is provided with a center hole (502), and the inner diameter of the upper clamp II (7) matches the center hole (502) of the flat-plate slotted bursting disc.

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