A device for protecting a rupture disc of a combustion system

Abstract

The utility model provides a device of protecting rupture disc of combustion system, including flange subassembly, heat preservation subassembly and rupture disc, flange subassembly includes detachable connection's mounting and upper flange, and mounting includes installation pipe and lower flane, and lower flane fixedly arranged on installation pipe upper end pipe orifice, and lower flane is the round sheet with through -hole being arranged in the middle, and the through -hole aperture is same with installation pipe inner diameter, upper flange is detachable with lower flane and is connected together, and rupture disc is clamped between upper flange and lower flane, heat preservation subassembly includes heat preservation basket and heat preservation cotton, and heat preservation cotton is arranged in heat preservation basket inside, heat preservation basket is detachable and is assembled in installation pipe, and heat preservation basket upper end is arranged in installation pipe, and heat preservation basket lower end stretches out from installation pipe lower end pipe orifice.

Description

Technical Field

[0001] This utility model belongs to the field of rupture disc technology for catalytic combustion devices, specifically relating to a device for protecting the rupture disc of a combustion system. Background Technology

[0002] During operation, catalytic combustion equipment undergoes an oxidation reaction in the presence of a catalyst, generating a significant amount of heat and causing a rise in furnace pressure. If the pressure exceeds the equipment's withstand capacity, an explosion may occur. According to relevant safety standards and regulations, catalytic combustion devices must be equipped with safety pressure relief devices to ensure safe operation under abnormal conditions. Rupture discs effectively protect the catalytic combustion device and its upstream and downstream equipment. When system malfunctions, the rupture discs can promptly release pressure, reducing stress on the equipment, preventing damage, and protecting the personal safety of operators.

[0003] The rupture disc of a CO furnace (Catalytic Oxidizer, also known as a "catalytic oxidation furnace" or "catalytic combustion equipment") is usually made of stainless steel, with a burst pressure of 20 kPa and a thickness of about 1-3 mm. The normal operating temperature of a CO furnace is usually 350℃. To ensure the heat preservation effect of the CO furnace and the normal operation of the rupture disc, a heat preservation component needs to be installed between the rupture disc and the CO furnace body.

[0004] As attached Figure 1 As shown, the current method of fixing the insulation components at the rupture disc of the CO furnace is a flexible connection, which is fixed by its own compression or by using insulation nails to fix it to the furnace body. In the long run, this installation method not only poses a risk of falling off during the later operation of the CO furnace, but also makes later maintenance inconvenient, posing a safety hazard. The use and replacement of insulation cotton are also relatively inconvenient.

[0005] Therefore, there is an urgent need for a rupture disc device that can balance heat preservation and ease of maintenance. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of safety hazards and inconvenient maintenance and replacement in the design of CO furnace rupture discs and insulation components in the prior art. Therefore, this invention provides a device for protecting the rupture discs of the combustion system.

[0007] To achieve the above objectives, the present invention proposes the following technical solution:

[0008] A device for protecting a rupture disc in a combustion system includes a flange assembly, an insulation assembly, and a rupture disc; the flange assembly includes a detachably connected mounting component and an upper flange, the mounting component including a mounting pipe and a lower flange;

[0009] The lower flange is fixedly installed at the upper end of the mounting pipe. The lower flange is a circular plate with a through hole in the middle, and the diameter of the through hole is the same as the inner diameter of the mounting pipe.

[0010] The upper flange and the lower flange are detachably connected together;

[0011] The rupture disc is sandwiched between the upper flange and the lower flange;

[0012] The insulation component includes an insulation basket and insulation cotton, with the insulation cotton disposed inside the insulation basket;

[0013] The insulation basket is detachably assembled inside the mounting tube, with the upper end of the insulation basket located inside the mounting tube and the lower end of the insulation basket extending out from the lower end of the mounting tube.

[0014] Furthermore, the insulation basket includes a limiting ring, several supporting parts, and a supporting ring;

[0015] The outer diameter of the limiting ring is larger than the outer diameter of the supporting ring, and the outer diameter of the limiting ring is smaller than the inner diameter of the mounting tube;

[0016] One end of the support part is connected to the edge of the limiting ring, and the other end of the support part is connected to the edge of the supporting ring, forming the side wall of the heat preservation basket;

[0017] The limiting ring and the supporting ring are arranged parallel to each other along the same axial direction, and their planar direction is perpendicular to the axial direction of the mounting tube.

[0018] Furthermore, the insulation basket also includes a support plate, which is disposed inside the support ring, and its plane is perpendicular to the axial direction of the support ring;

[0019] The support plate has a hollow structure.

[0020] Furthermore, the support portion is evenly distributed on the side wall of the insulation basket.

[0021] Furthermore, the inner wall of the mounting tube is provided with a plurality of protrusions arranged along the same circumference, and the positions of the protrusions correspond to the areas between adjacent support portions.

[0022] Furthermore, the protrusion protrudes radially along the mounting tube, and the distance between the extended end of the protrusion and the inner wall of the mounting tube is defined as the protrusion distance. The protrusion distance is greater than the difference between the inner diameter of the mounting tube and the outer diameter of the limiting ring, and the protrusion distance is less than or equal to the difference between the inner diameter of the mounting tube and the outer diameter of the supporting ring.

[0023] Furthermore, the insulation basket slides axially along the mounting tube from the end where the support ring is located to the end where the lower flange is located, while the area between adjacent support parts corresponds to the position of the protrusion, until the lower end face of the limiting ring contacts the protrusion, so that the upper end of the insulation basket is assembled inside the mounting tube, and the lower end of the insulation basket extends out from the lower end of the mounting tube.

[0024] Furthermore, the insulation cotton is disposed inside the insulation basket and fills the space formed by the support ring and the support part, with its lower end contacting the support plate and its upper end being at least flush with the lower end of the installation pipe.

[0025] Furthermore, the upper flange and the lower flange are symmetrically distributed vertically, and the upper flange, the rupture disc, and the lower flange are connected by fasteners. The upper flange, the rupture disc, and the lower flange are all provided with mounting holes for the fasteners to pass through.

[0026] Furthermore, the rupture disc uses a type of rupture disc material including a positive arched slit type.

[0027] The beneficial effects of this utility model are:

[0028] (1) By setting up a flange assembly and an insulation assembly, this utility model solves the problem of fixing the insulation cotton at the rupture disc of the CO furnace in the prior art. By setting up an insulation basket to fix the insulation cotton to the rupture disc device, it effectively prevents the insulation cotton from falling off due to gas impact or pressure change during CO furnace operation. It effectively prevents heat loss in the device and avoids the furnace temperature from affecting the mechanical properties of the rupture disc, thus ensuring the safety and stability of the explosion relief device.

[0029] (2) By setting up a detachable and assembled heat insulation component, this utility model realizes the inspection, warranty and maintenance of the rupture disc equipment. When needed, the heat insulation basket can be easily removed from the installation tube and the heat insulation cotton can be replaced. All components of the overall equipment can be replaced and maintained at any time, reducing the equipment maintenance cost. The overall equipment has a simple structure and low manufacturing cost while achieving good heat insulation and pressure retention effects.

[0030] (3) The rupture disc device provided by this utility model has a simple structure and strong versatility. It can be used not only in CO furnaces, but also in combustion equipment such as RCO, TO, and RTO. The adaptable specifications and dimensions of each component can be adjusted according to actual needs. It is suitable for conventional safety pressure relief devices and effectively isolates internal and external temperatures to achieve the effects of heat preservation and moisture retention.

[0031] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.

[0032] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0033] The accompanying drawings are not drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures can be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings. The embodiments in the drawings do not constitute any limitation on the present invention. Other drawings can be obtained by those skilled in the art based on the following drawings without inventive effort:

[0034] Figure 1 This is a cross-sectional schematic diagram of the CO furnace with insulation cotton installed in the comparative example;

[0035] Figure 2 This is a schematic diagram of the mounting structure of the rupture disc device in the catalytic combustion apparatus provided by this utility model;

[0036] Figure 3 This is a schematic diagram of the insulation basket structure in the rupture disc device of the catalytic combustion apparatus provided by this utility model;

[0037] Figure 4 This is a schematic diagram of the rupture disc device structure of the catalytic combustion device provided by this utility model;

[0038] Figure 5 This is a side view of the rupture disc device of the catalytic combustion apparatus provided by this utility model.

[0039] Legend:

[0040] 01. CO furnace exhaust port; 02. CO furnace insulation component; 03. CO furnace rupture disc; 11. Mounting pipe; 110. Protrusion; 12. Lower flange; 120. Lower flange mounting hole; 13. Upper flange; 130. Upper flange mounting hole; 21. Limiting ring; 22. Support part; 23. Support ring; 24. Support plate; 3. Rupture disc. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0042] The terms "first," "second," and similar words used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] This embodiment provides a device for protecting the rupture disc of a combustion system, specifically including: a flange assembly, an insulation assembly, and a rupture disc 3.

[0044] See attached document Figure 2 The flange assembly includes a detachable mounting component and an upper flange 13. The mounting component includes a mounting pipe 11 and a lower flange 12. The lower flange 13 is fixedly installed at the upper end of the mounting pipe 11.

[0045] In some alternative embodiments, the lower flange 13 is fixed to the upper end of the mounting pipe 11 by welding.

[0046] The lower flange 13 is a circular piece with a through hole in the middle, and the diameter of the through hole is the same as the inner diameter of the mounting pipe 11.

[0047] The upper flange 13 and the lower flange 12 are symmetrically arranged. The upper flange 13 is also a circular disc with a through hole in the middle, and its shape and size are the same as those of the lower flange 13. The upper flange 13 is provided with an upper flange mounting hole 130, and the lower flange 12 is provided with a lower flange mounting hole 120. The upper flange 13 and the lower flange 12 are connected by fasteners that pass through the upper flange mounting hole 130 and the lower flange mounting hole 120.

[0048] The fasteners include bolts and matching nuts.

[0049] In some alternative embodiments, at least one set of rubber gaskets is fitted onto the external thread of the bolt to enhance the fastening effect.

[0050] The rupture disc 3 is provided with mounting holes for fasteners to pass through. The rupture disc 3 is sandwiched between the upper flange 13 and the lower flange 12. The upper flange 13, the rupture disc 3 and the lower flange 12 are connected by fasteners, which pass through the mounting holes 130 of the upper flange, the mounting holes of the rupture disc and the mounting holes 120 of the lower flange.

[0051] The outer diameter of the rupture disc 3 is the same as that of the upper flange 13 and the lower flange 12.

[0052] In some optional embodiments, gasket assemblies are respectively sandwiched between the rupture disc 3 and the upper flange 13 and the lower flange 12. The gasket assemblies are identical to the upper flange 13 and the lower flange 12, and are provided with mounting holes at corresponding positions. The two gasket assemblies are fixed between the rupture disc 3 and the upper flange 13 and the rupture disc 3 and the lower flange 12 respectively by fasteners, thereby further enhancing the fastening effect of the rupture disc 3.

[0053] The gasket assembly can be made of rubber.

[0054] In some optional embodiments, the rupture disc 3 uses rupture sheet materials including positive arch slit type, flat slit type and reverse arch slit type, and the rupture sheet material can be selected according to actual needs.

[0055] The material of the rupture disc 3 can be selected according to actual needs, and can be a metal disc, a non-metal disc, or a metal composite disc.

[0056] In some alternative embodiments, a protective cover is provided on the outside of the upper flange 13. The protective cover is fixed to the outside of the upper flange 13 by welding to prevent debris from splashing out after the rupture disc 3 breaks, thus posing a safety risk.

[0057] The insulation component includes an insulation basket and insulation cotton, with the insulation cotton placed inside the insulation basket.

[0058] See attached document Figure 3 The insulated basket includes a limiting ring 21, several support parts 22, a supporting ring 23, and a supporting plate 24.

[0059] The outer diameter of the limiting ring 21 is larger than the outer diameter of the supporting ring 23, and the outer diameter of the limiting ring 21 is smaller than the inner diameter of the mounting pipe 11.

[0060] One end of the support part 22 is connected to the edge of the limiting ring 21, and the other end of the support part 22 is connected to the edge of the supporting ring 23, forming the side wall of the heat preservation basket. The support parts 22 are evenly distributed on the side wall of the heat preservation basket.

[0061] The limiting ring 21 and the supporting ring 23 are arranged parallel to each other along the same axial direction, and their plane direction is perpendicular to the axial direction of the mounting tube 11.

[0062] The support plate 24 is disposed inside the support ring 23, and its plane is perpendicular to the axial direction of the support ring 23.

[0063] The support plate 24 has a hollow structure.

[0064] In some alternative embodiments, the above-mentioned hollow structure can be formed by a mesh arrangement, and the mesh shape includes, but is not limited to, orthogonal, radial, and spiral.

[0065] The insulation cotton fills the space formed by the support ring 23 and the support part 22, with its lower end contacting the support plate 24 and its upper end at least flush with the lower end of the installation pipe 11. The specific filling height of the insulation cotton can be adjusted as needed, but its height is generally not higher than the position of the limiting ring 21.

[0066] In some alternative embodiments, the insulation material includes 1260 fiber blankets and / or 1260 ceramic fiber blocks.

[0067] Specifically, the 1260 fiber blanket and 1260 ceramic fiber block are combined and used. The fiber blanket and fiber block are layered and overlapped and fixed. The fiber blanket is placed inside the fiber block. The insulation cotton is rolled into a cylindrical shape and filled into the insulation basket to ensure that it will not slip out from the gap between the support parts.

[0068] The inner wall of the mounting tube 11 is provided with a plurality of protrusions 110 arranged along the same circumference. The positions of the protrusions 110 correspond to the areas between adjacent support parts 22. There may be more than one protrusion 110 corresponding to the areas between adjacent support parts 22.

[0069] The protrusion 110 protrudes radially along the mounting tube 11. The distance between the extended end of the protrusion 110 and the inner wall of the mounting tube 11 is defined as the protrusion distance. The protrusion distance is greater than or equal to the difference between the inner diameter of the mounting tube 11 and the outer diameter of the limiting ring 21, and less than or equal to the difference between the inner diameter of the mounting tube 11 and the outer diameter of the supporting ring 23. This ensures that the supporting ring 23 can enter the mounting tube 11 and the limiting ring 21 can be restricted and fixed inside the mounting tube 11 by the protrusion 110.

[0070] See attached document Figure 4The upper end of the insulation basket is set inside the installation tube 11, and the lower end of the insulation basket extends out from the lower end of the installation tube 11.

[0071] Specifically, starting from the end where the support ring 23 is located, slide along the axial direction of the mounting tube 11 from the end where the lower flange 12 is located, while making the area between the adjacent support parts 22 correspond to the position of the protrusion 110, until the lower end face of the limiting ring 21 contacts the protrusion 110 and can no longer slide towards the lower end of the mounting tube 11, so that the insulation basket is assembled on the inner wall of the mounting tube 11 and can rotate inside the mounting tube 11.

[0072] In some alternative embodiments, the outer contour of the insulation basket is provided with a groove, and the protrusion 110 has a supporting surface that matches the groove. The insulation basket can be rotated or axially slid along the mounting tube 11 to make the groove engage with the protrusion 110, thereby achieving radial limiting and fixing the insulation basket to the inner wall of the mounting tube 11 so that it cannot rotate.

[0073] In rupture disc equipment, flange components and insulation baskets can be made of metal materials, including but not limited to carbon steel and 304 stainless steel, because they have high temperature resistance, are not easily deformed, and have high physical strength.

[0074] When using the rupture disc device, the lower end of the installation pipe 11 is connected to the preset pipe port of the catalytic combustion device via a flange until the lower flange 12 touches the end face of the preset pipe port. The insulation basket and the insulation cotton it contains are placed inside the catalytic combustion device to prevent heat loss from the device and to prevent the furnace temperature from affecting the mechanical properties of the rupture disc 3.

[0075] When the pressure inside the catalytic combustion device reaches the preset value, the rupture disc 3 breaks to release pressure. The rupture disc 3 can be replaced by disassembling the upper flange 13, or the insulation cotton can be replaced as needed. Example

[0076] A device for protecting the rupture disc of a combustion system, the device being described in the attached diagram. Figure 2 -Appendix Figure 5 As shown.

[0077] The insulation material is a combination of 1260 fiber blanket and 1260 ceramic fiber block.

[0078] The rupture disc 3 is a positive arched slotted metal disc with an overall diameter of 500 mm and a mounting hole 130 with a diameter of 14 mm.

[0079] The mounting pipe 11 has an inner diameter of 400 mm and a wall height of 100 mm. The protrusion distance of the protrusion 110 is 20 mm, and the number of protrusions 110 is set to 4. The lower flange 12 has an outer diameter of 500 mm, an inner ring through hole diameter of 400 mm, and a lower flange mounting hole 120 diameter of 14 mm. The upper flange 13 has an outer diameter of 500 mm, an inner ring through hole diameter of 400 mm, and an upper flange mounting hole 130 diameter of 14 mm.

[0080] The outer diameter of the limiting ring 21 is 390 mm, the outer diameter of the supporting ring 23 is 350 mm, the height of the support part 22 is 200 mm, the number of support parts 22 is set to 3, and the supporting structure is set with an orthogonal hollow structure in a mesh arrangement.

[0081] The lower end of the installation pipe 11 is connected and fixed to the pre-reserved rupture disc port of the CO furnace with a flange. The rupture disc equipment is installed on the CO furnace. The CO furnace is running normally, and the whole system has been running stably for more than a week without any abnormalities. Mid-term maintenance and replacement of rupture disc 3 and insulation cotton are very quick. Example

[0082] A device for protecting the rupture disc of a combustion system, the device being described in the attached diagram. Figure 2 -Appendix Figure 5 As shown.

[0083] The insulation material is a combination of 1260 fiber blanket and 1260 ceramic fiber block.

[0084] The rupture disc 3 is a flat, slotted metal disc with an overall diameter of 300 mm and an 8 mm diameter mounting hole 130.

[0085] The mounting pipe 11 has an inner diameter of 200 mm and a wall height of 150 mm. The protrusion distance of the protrusion 110 is 15 mm, and the number of protrusions 110 is set to 3. The lower flange 12 has an outer diameter of 300 mm, an inner ring through hole diameter of 200 mm, and a lower flange mounting hole 120 diameter of 8 mm. The upper flange 13 has an outer diameter of 300 mm, an inner ring through hole diameter of 200 mm, and an upper flange mounting hole 130 diameter of 8 mm.

[0086] The outer diameter of the limiting ring 21 is 210 mm, the outer diameter of the supporting ring 23 is 180 mm, the height of the support part 22 is 270 mm, the number of support parts 22 is set to 3, and the supporting structure is a radial hollow structure arranged in a mesh pattern.

[0087] The lower end of the installation pipe 11 is connected and fixed to the pre-reserved rupture disc port of the RTO furnace with a flange. The rupture disc equipment is installed in the RTO furnace. The RTO furnace is running normally, and the whole system has been running stably for more than a week without any abnormalities. Mid-term maintenance and replacement of rupture disc 3 and insulation cotton are very quick. Example

[0088] A device for protecting the rupture disc of a combustion system, the device being described in the attached diagram. Figure 2 -Appendix Figure 5 As shown.

[0089] The insulation material is a combination of 1260 fiber blanket and 1260 ceramic fiber block.

[0090] The rupture disc 3 is a metal disc with an inverted arch and slots. The outer diameter of the rupture disc 3 is 700 mm, and the diameter of the mounting hole 130 is 25 mm.

[0091] The mounting pipe 11 has an inner diameter of 600 mm and a wall height of 200 mm. The protrusion distance of the protrusion 110 is 20 mm, and the number of protrusions 110 is set to 4. The lower flange 12 has an outer diameter of 700 mm, an inner ring through hole diameter of 600 mm, and a lower flange mounting hole 120 diameter of 25 mm. The upper flange 13 has an outer diameter of 700 mm, an inner ring through hole diameter of 600 mm, and an upper flange mounting hole 130 diameter of 25 mm.

[0092] The outer diameter of the limiting ring 21 is 590 mm, the outer diameter of the supporting ring 23 is 550 mm, the height of the support part 22 is 350 mm, the number of support parts 22 is set to 3, and the supporting structure is a spiral hollow structure arranged in a mesh pattern.

[0093] The lower end of the installation pipe 11 is connected and fixed to the pre-reserved rupture disc port of the RCO furnace with a flange. The rupture disc equipment is installed in the RCO furnace. The RCO furnace is running normally, and the whole system has been running stably for more than a week without any abnormalities. Mid-term maintenance and replacement of rupture disc 3 and insulation cotton are very quick. Example

[0094] A device for protecting the rupture disc of a combustion system, the device being described in the attached diagram. Figure 2 -Appendix Figure 5 As shown.

[0095] The insulation material is a combination of 1260 fiber blanket and 1260 ceramic fiber block.

[0096] The rupture disc 3 is a flat, slotted metal disc with an overall diameter of 400 mm and a mounting hole 130 with a diameter of 12 mm.

[0097] The mounting pipe 11 has an inner diameter of 300 mm and a wall height of 150 mm. The protrusion distance of the protrusion 110 is 20 mm, and the number of protrusions 110 is set to 5. The lower flange 12 has an outer diameter of 400 mm, an inner ring through hole diameter of 300 mm, and a lower flange mounting hole 120 diameter of 12 mm. The upper flange 13 has an outer diameter of 400 mm, an inner ring through hole diameter of 300 mm, and an upper flange mounting hole 130 diameter of 12 mm.

[0098] The outer diameter of the limiting ring 21 is 290 mm, the outer diameter of the supporting ring 23 is 250 mm, the height of the support part 22 is 270 mm, the number of support parts 22 is set to 4, and the supporting structure is a circular hollow structure arranged in a mesh pattern.

[0099] The lower end of the installation pipe 11 is connected and fixed to the pre-reserved rupture disc port of the TO furnace with a flange. The rupture disc equipment is installed on the TO furnace. The TO furnace is running normally, and the whole system has been running stably for more than a week without any abnormalities. Mid-term maintenance and replacement of rupture disc 3 and insulation cotton are very quick.

[0100] The difference between Comparative Example 1 and Example 1 lies in the rupture disc device and installation method; the device used is as shown in the attached diagram. Figure 1 As shown.

[0101] The thermal insulation component 02 uses a combination of 1260 fiber blanket and 1260 ceramic fiber block materials.

[0102] The CO furnace rupture disc 03 uses a positive arched slit metal disc, and the overall diameter of the CO furnace rupture disc 03 is 500 mm.

[0103] The insulation component 02 is nailed to the CO furnace body using insulation nails, specifically arranged in a flexible connection around the exhaust port 01 and the inside of the CO furnace rupture pipe, and fixed by its own compression.

[0104] The CO furnace is operating normally, but the entire system is experiencing heat leakage, and the installation, maintenance, and replacement of the insulation component 01 are very inconvenient.

[0105] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

[0106] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. Technical details not described in detail in this utility model can all be implemented by any existing technology in the art. In particular, all technical features not described in detail in this utility model can be implemented by any existing technology.

Claims

1. A device for protecting the rupture disc of a combustion system, characterized in that, The device includes a flange assembly, an insulation assembly, and a rupture disc; the flange assembly includes a detachable mounting component and an upper flange, and the mounting component includes a mounting pipe and a lower flange; The lower flange is fixedly installed at the upper end of the mounting pipe. The lower flange is a circular plate with a through hole in the middle, and the diameter of the through hole is the same as the inner diameter of the mounting pipe. The upper flange and the lower flange are detachably connected together; The rupture disc is sandwiched between the upper flange and the lower flange; The insulation component includes an insulation basket and insulation cotton, with the insulation cotton disposed inside the insulation basket; The insulation basket is detachably assembled inside the mounting tube, with the upper end of the insulation basket located inside the mounting tube and the lower end of the insulation basket extending out from the lower end of the mounting tube.

2. The device for protecting the rupture disc of a combustion system according to claim 1, characterized in that, The insulation basket includes a limiting ring, several supporting parts, and a supporting ring; The outer diameter of the limiting ring is larger than the outer diameter of the supporting ring, and the outer diameter of the limiting ring is smaller than the inner diameter of the mounting tube; One end of the support part is connected to the edge of the limiting ring, and the other end of the support part is connected to the edge of the supporting ring, forming the side wall of the heat preservation basket; The limiting ring and the supporting ring are arranged parallel to each other along the same axial direction, and their planar direction is perpendicular to the axial direction of the mounting tube.

3. The device for protecting the rupture disc of a combustion system according to claim 2, characterized in that, The insulation basket also includes a support plate, which is disposed inside the support ring and its plane is perpendicular to the axial direction of the support ring; The support plate has a hollow structure.

4. The device for protecting the rupture disc of a combustion system according to claim 2, characterized in that, The support components are evenly distributed on the side wall of the insulation basket.

5. The device for protecting the rupture disc of a combustion system according to claim 3, characterized in that, The inner wall of the mounting tube is provided with a plurality of protrusions arranged along the same circumference, and the positions of the protrusions correspond to the areas between adjacent support portions.

6. The device for protecting the rupture disc of a combustion system according to claim 5, characterized in that, The protrusion extends radially along the mounting tube. The distance between the extended end of the protrusion and the inner wall of the mounting tube is defined as the protrusion distance. The protrusion distance is greater than the difference between the inner diameter of the mounting tube and the outer diameter of the limiting ring, and the protrusion distance is less than or equal to the difference between the inner diameter of the mounting tube and the outer diameter of the supporting ring.

7. The device for protecting the rupture disc of a combustion system according to claim 5, characterized in that, The insulation basket starts from the end where the support ring is located and slides axially along the inside of the mounting tube from the end where the lower flange is located, while making the area between the adjacent support parts correspond to the position of the protrusion, until the lower end face of the limiting ring contacts the protrusion, so that the upper end of the insulation basket is assembled inside the mounting tube, and the lower end of the insulation basket extends out from the lower end of the mounting tube.

8. The device for protecting the rupture disc of a combustion system according to claim 3, characterized in that, The insulation cotton is placed inside the insulation basket and fills the space formed by the support ring and the support part. Its lower end contacts the support plate, and its upper end is at least flush with the lower end of the installation pipe.

9. The device for protecting the rupture disc of a combustion system according to claim 1, characterized in that, The upper flange and the lower flange are symmetrically distributed vertically. The upper flange, the rupture disc, and the lower flange are connected by fasteners. The upper flange, the rupture disc, and the lower flange are all provided with mounting holes for the fasteners to pass through.

10. The device for protecting the rupture disc of a combustion system according to claim 1, characterized in that, The rupture discs used include those with a positive arch and open slot.

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