A pressure relief device for fluidized bed

Abstract

The present application relates to the technical fields of fluidized bed, in particular to a kind of fluidized bed with venting and pressure relief device;The present application provides a kind of fluidized bed with venting and pressure relief device, cover is equipped with venting and pressure relief port;Support frame ring venting and pressure relief port circumferential setting;Connecting piece one end is hinged in support frame side wall, and the other end of connecting piece is hinged on venting and pressure relief piece;Venting and pressure relief piece is suitable for covering on venting and pressure relief port;Sealing element ring venting and pressure relief piece circumferential setting, sealing element is suitable for sealing venting and pressure relief piece and venting and pressure relief port;Among them, connecting piece is suitable for pushing venting and pressure relief piece, to seal venting and pressure relief port;After the pressure in cover reaches the set value, venting and pressure relief piece is suitable for separating from cover to release pressure;Through the setting of venting and pressure relief piece, after the pressure in fluidized bed reaches the preset value, venting and pressure relief piece can separate from cover, to play the effect of pressure relief.The setting of sealing element, not only can be adapted to the plate of different thickness, but also can be suitable for curved surface circumferential sealing, improves the sealing effect.

Description

Technical Field

[0001] This invention relates to the field of fluidized bed technology, and more specifically to a pressure relief and explosion venting device for fluidized beds. Background Technology

[0002] For fluidized beds, the production environment is a high-temperature container. After the blower draws negative pressure into the equipment, the internal molecules collide with the inner wall of the equipment, causing friction to increase continuously, which increases the internal pressure of the equipment. Because the inner wall of the equipment is thin, when the internal pressure reaches a certain value, it is necessary to release the pressure to ensure the production safety of the equipment.

[0003] Existing pressure relief devices mostly use a combination of sensors and pressure relief valves. While this method can achieve the desired pressure relief effect, the relief time is long, and the sensors are also easily damaged by impacts from materials inside the equipment. Therefore, it is necessary to develop a pressure relief device for fluidized beds. Summary of the Invention

[0004] The purpose of this invention is to provide a pressure relief and explosion venting device for fluidized beds.

[0005] To solve the above-mentioned technical problems, the present invention provides a pressure relief and explosion venting device for fluidized beds, comprising: The cover, support frame, explosion relief plate, connector and seal, the cover is fixed on the fluidized bed and the cover has a pressure relief port; The support frame is circumferentially arranged around the pressure outlet; One end of the connector is hinged to the side wall of the support frame, and the other end of the connector is fixed to the explosion relief disc; The pressure relief disc is adapted to cover the pressure relief port; The sealing element is arranged circumferentially around the explosion relief plate, and the sealing element is adapted to seal the explosion relief plate and the pressure relief port; The connector is adapted to push the pressure relief disc to seal the pressure relief port; Once the pressure inside the cover reaches the set value, the pressure relief disc is adapted to detach from the cover to release the pressure.

[0006] Preferably, the connector includes a horizontal connecting rod and a vertical connecting rod, with one end of the horizontal connecting rod hinged to the side wall of the support frame; One end of the vertical connecting rod is fixed to the end of the horizontal connecting rod, and the other end of the vertical connecting rod is fixed to the explosion relief disc; The horizontal connecting rod is adapted to push the vertical connecting rod to move the explosion relief disc toward the cover.

[0007] Preferably, a first sealing groove and a second sealing groove are respectively provided on both sides of the sealing element, and the side wall of the cover is adapted to be inserted into the first sealing groove. The sidewall of the explosion relief disc is adapted to be inserted into the second sealing groove.

[0008] Preferably, the bottom of the seal is fixed with a protrusion, which is adapted to compress the seal to improve the elasticity of both sides of the outer wall of the seal.

[0009] Preferably, the groove size of the first sealing groove gradually increases from the outside to the inside.

[0010] Preferably, the groove size of the second sealing groove gradually increases from the outside to the inside.

[0011] Preferably, the upper surface of the seal is provided with a third sealing groove, and the sealing strip is adapted to be inserted into the third sealing groove.

[0012] Preferably, an anti-fall bracket is fixed to the inner wall of the cover, and the anti-fall bracket is located below the explosion relief disc.

[0013] Preferably, a support block is fixed at the lower end of the explosion relief disc, and the support block abuts against the anti-fall bracket.

[0014] Preferably, the thickness of the outer ring of the seal is less than the thickness of the inner ring.

[0015] The beneficial effects of this invention are that the fluidized bed pressure relief device of this invention, through the setting of the pressure relief plate, allows the pressure relief plate to detach from the cover body after the pressure in the fluidized bed reaches a preset value, thereby achieving the effect of pressure relief. Furthermore, the sealing element is adaptable not only to plates of different thicknesses but also to curved circumferential sealing, improving the sealing effect.

[0016] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a preferred embodiment of a fluidized bed explosion venting and pressure relief device according to the present invention; Figure 2 This is an internal sectional view of the explosion relief disc and support frame of the present invention; Figure 3 This is a partial cross-sectional view of the explosion relief disc and seal of the present invention; Figure 4 This is a longitudinal cross-sectional view of the sealing element of the present invention.

[0020] In the picture: 1. Cover; 11. Anti-fall bracket; 2. Support frame; 3. Explosion relief disc; 30. Support block; 4. Connector; 41. Horizontal connecting rod; 42. Vertical connecting rod; 5. Seal; 51. First sealing groove; 52. Second sealing groove; 53. Third sealing groove; 54. Protrusion. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 4 As shown, this invention provides a pressure relief and explosion venting device for a fluidized bed boiler, comprising: a cover 1, a support frame 2, an explosion venting disc 3, a connector 4, and a sealing element 5. The cover 1 is fixed to the fluidized bed boiler, and a pressure vent is provided on the cover 1. When the pressure inside the fluidized bed boiler exceeds a preset value, the explosion venting disc 3 is adapted to detach from the pressure vent to relieve pressure on the fluidized bed boiler. The support frame 2 is circumferentially arranged around the pressure vent. One end of the connector 4 is hinged to the side wall of the support frame 2, and the other end of the connector 4 is fixed to the explosion venting disc 3. The connector 4 is adapted to push the explosion venting disc 3 so that it can cover the pressure vent. The explosion venting disc 3 is adapted to cover the pressure vent. The sealing element 5 is circumferentially arranged around the explosion venting disc 3 and is adapted to seal the explosion venting disc 3 and the pressure vent. The sealing element 5 improves the airtightness between the explosion venting disc 3 and the cover 1. The connector 4 is adapted to push the pressure relief disc 3 to seal the pressure relief port; after the pressure inside the cover 1 reaches a set value, the pressure relief disc 3 is adapted to detach from the cover 1 to release pressure. Through the setting of the pressure relief disc 3, after the pressure inside the fluidized bed reaches a preset value, the pressure relief disc 3 can detach from the cover 1 to achieve the effect of pressure relief. The sealing element 5 can not only adapt to plates of different thicknesses, but also is suitable for curved circumferential sealing, improving the sealing effect.

[0023] Reference Appendix Figure 2The connecting member 4 includes a horizontal connecting rod 41 and a vertical connecting rod 42. One end of the horizontal connecting rod 41 is hinged to the side wall of the support frame 2. One end of the vertical connecting rod 42 is fixed to the end of the horizontal connecting rod 41, and the other end of the vertical connecting rod 42 is fixed to the explosion relief plate 3. The horizontal connecting rod 41 is adapted to push the vertical connecting rod 42 so that the explosion relief plate 3 can cover the pressure discharge port. When the pressure inside the fluidized bed boiler reaches a preset value, the explosion relief plate 3 is adapted to overcome the thrust of the vertical connecting rod 42 and the squeezing force of the sealing element 5, and the explosion relief plate 3 is adapted to detach from the pressure discharge port.

[0024] Reference Appendix Figure 4 The sealing element 5 has a first sealing groove 51 and a second sealing groove 52 respectively on both sides. The side wall of the cover 1 is adapted to be inserted into the first sealing groove 51; the side wall of the explosion relief disc 3 is adapted to be inserted into the second sealing groove 52. The cross-section of the sealing element 5 is an irregular ellipse. The arrangement of the first sealing groove 51 and the second sealing groove 52 allows the sealing element 5 to adapt to plates of different thicknesses. The plate referred to in this invention is the stainless steel plate used for the explosion relief disc 3 and the cover 1.

[0025] To improve the rebound of the seal 5 at the first sealing groove 51 and the second sealing groove 52, a protrusion 54 is fixed to the bottom of the seal 5. The protrusion 54 is adapted to compress the seal 5 to improve the elasticity of both sides of the outer wall of the seal 5. With the protrusion 54 installed, after the explosion vent 3 and the cover 1 are respectively inserted into the second sealing groove 52 and the first sealing groove 51, the protrusion 54 allows the inner wall of the second sealing groove 52 below the explosion vent 3 and the inner wall of the first sealing groove 51 below the cover 1 to be better pressed against the explosion vent 3 and the cover 1.

[0026] To accommodate plates of different thicknesses, the opening size of the first sealing groove 51 gradually increases from the outside to the inside. The opening size of the second sealing groove 52 also gradually increases from the outside to the inside. The opening sizes of the first sealing groove 51 and the second sealing groove 52 are smaller at the outside and larger at the inside, allowing plates of different thicknesses to be inserted into both the first sealing groove 51 and the second sealing groove 52.

[0027] To improve the sealing effect of the seal 5, a third sealing groove 53 is formed on the upper surface of the seal 5, and a sealing strip is adapted to be inserted into the third sealing groove 53. Since the cover 1 is arc-shaped, certain special areas require the openings of the first sealing groove 51 and the second sealing groove 52 to be sufficiently large, which would result in poor sealing performance of the first sealing groove 51 and the second sealing groove 52. Therefore, a sealing strip is inserted into the third sealing groove 53 to compress the seal 5, so that the inner walls of the first sealing groove 51 located above the cover 1 and the second sealing groove 52 located above the explosion relief plate 3 can be pressed closer to the cover 1 and the explosion relief plate 3 by the sealing strip, thus improving the sealing effect between the seal 5 and the cover 1 and the explosion relief plate 3.

[0028] To prevent the explosion relief disc 3 from falling into the fluidized bed boiler, an anti-fall bracket 11 is fixed to the inner wall of the cover 1, and the anti-fall bracket 11 is located below the explosion relief disc 3. A support block 30 is fixed to the lower end of the explosion relief disc 3, and the support block 30 abuts against the anti-fall bracket 11.

[0029] The sealing element 5 of this invention can be used not only for flat plate sealing but also for curved surface circumferential sealing. The thickness of the outer ring of the sealing element 5 is less than the thickness of the inner ring. The thinner outer ring makes it easier to form a circle, thus improving the adaptability of the sealing element 5.

[0030] All devices selected in this application (parts whose specific structures are not described) are general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. Furthermore, all software programs involved in this application are prior art, and this application does not involve any improvements to the software programs.

[0031] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0034] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0035] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0036] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pressure relief and explosion venting device for fluidized beds, characterized in that, include: The cover (1), support frame (2), explosion relief plate (3), connector (4) and sealing element (5) are provided. The cover (1) is fixed on the fluidized bed and a pressure relief port is provided on the cover (1). The support frame (2) is arranged circumferentially around the pressure outlet; One end of the connector (4) is hinged to the side wall of the support frame (2), and the other end of the connector (4) is fixed to the explosion relief plate (3); The explosion relief disc (3) is adapted to cover the pressure relief port; The sealing element (5) is arranged circumferentially around the explosion relief plate (3), and the sealing element (5) is adapted to seal the explosion relief plate (3) and the pressure relief port; The connector (4) is adapted to push the explosion relief disc (3) to seal the pressure relief port; After the pressure inside the cover (1) reaches the set value, the pressure relief disc (3) is adapted to detach from the cover (1) to relieve pressure; The connector (4) includes a horizontal connecting rod (41) and a vertical connecting rod (42), one end of which is hinged to the side wall of the support frame (2); One end of the vertical connecting rod (42) is fixed to the end of the horizontal connecting rod (41), and the other end of the vertical connecting rod (42) is fixed to the explosion relief disc (3); The horizontal connecting rod (41) is adapted to push the vertical connecting rod (42) so that the explosion relief plate (3) moves toward the cover (1); The sealing element (5) has a first sealing groove (51) and a second sealing groove (52) respectively on both sides, and the side wall of the cover (1) is adapted to be inserted into the first sealing groove (51). The side wall of the explosion relief disc (3) is adapted to be inserted into the second sealing groove (52); The bottom of the seal (5) is fixed with a protrusion (54), which is adapted to squeeze the seal (5) to improve the elasticity of the outer wall of the seal (5); An anti-fall bracket (11) is fixed to the inner wall of the cover (1), and the anti-fall bracket (11) is located below the explosion relief plate (3); The lower end of the explosion relief plate (3) is fixed with a support block (30), and the support block (30) abuts against the anti-fall bracket (11).

2. The explosion venting and pressure relief device for a fluidized bed as described in claim 1, characterized in that: The groove size of the first sealing groove (51) gradually increases from the outside to the inside.

3. The explosion venting and pressure relief device for a fluidized bed as described in claim 2, characterized in that: The groove size of the second sealing groove (52) gradually increases from the outside to the inside.

4. The explosion venting and pressure relief device for a fluidized bed as described in claim 3, characterized in that: The upper surface of the sealing element (5) is provided with a third sealing groove (53), and the sealing strip is suitable for insertion into the third sealing groove (53).

5. The explosion venting and pressure relief device for a fluidized bed as described in claim 4, characterized in that: The thickness of the outer ring of the seal (5) is less than the thickness of the inner ring.

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