An explosion-proof gas pressure regulating box

Abstract

The present invention relates to the technical field of gas pressure regulating equipment, and provides an explosion-proof gas pressure regulating box, comprising a box body and a pressure regulator, wherein the pressure regulator is arranged in the box body and comprises an upper valve shell and a lower valve shell; a diaphragm, wherein the diaphragm is arranged between the upper valve shell and the lower valve shell, and a valve cavity is formed between the diaphragm and the lower valve shell, and the valve cavity is used for pressure regulation, and an air release cavity is formed between the diaphragm and the upper valve shell, and the air release cavity is used for pressure relief of the valve cavity; an explosion-proof barrier layer, wherein the explosion-proof barrier layer is located in the air release cavity and is arranged in contact with the diaphragm, and is clamped between the upper valve shell and the lower valve shell on all sides. The above technical solution solves the technical problem of poor explosion-proof effect of the pressure regulator in the gas pressure regulating box in the related art. The probability of rupture of the diaphragm in the explosion-proof gas pressure regulating box is reduced, which effectively prevents large-scale leakage of gas due to rupture of the diaphragm, and improves explosion-proof safety.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of gas pressure regulating equipment, and in particular, to an explosion-proof gas pressure regulating box. Background Art

[0002] The gas pressure regulating box is a key device in the gas transmission and distribution system. Its primary function is to regulate gas pressure, precisely adjusting high input pressure to a stable pressure suitable for downstream equipment. This ensures a stable gas supply and the normal operation of various gas-consuming devices. Furthermore, it precisely controls gas flow according to different gas usage scenarios, meeting diverse gas needs.

[0003] Structurally, it includes a pressure regulating unit, which regulates pressure through a pressure regulator; safety devices such as an overpressure shut-off valve and a relief valve to ensure safety in the event of pressure anomalies; a filter to remove impurities from the gas; and an intelligent monitoring module to collect and upload operating data in real time. The enclosure generally has a certain degree of protection to ensure the normal operation of the internal equipment.

[0004] In the existing technology, gas pressure regulating boxes usually do not have explosion-proof functions. Although related equipment has been improved in terms of explosion-proof, usually only the structural strength of the outer shell has been strengthened, and true explosion-proofness cannot be achieved. In particular, the pressure regulator of the pressure regulating unit, the internal diaphragm, is usually made of rubber material. When faced with a strong explosion, it will rupture, causing further leakage of gas and posing a greater safety hazard. Summary of the Invention

[0005] To overcome the above-mentioned defects, an embodiment of the present invention provides an explosion-proof gas pressure regulating box, which solves the technical problem of poor explosion-proof effect of the pressure regulator in the gas pressure regulating box in the related art.

[0006] According to one aspect, at least one embodiment of the present invention provides an explosion-proof gas pressure regulating box, comprising a box body and a pressure regulator, wherein the pressure regulator is disposed in the box body and comprises:

[0007] Upper valve housing and lower valve housing;

[0008] a diaphragm, the diaphragm being disposed between the upper valve housing and the lower valve housing, a valve cavity being formed between the diaphragm and the lower valve housing, the valve cavity being used for pressure regulation, and an air release cavity being formed between the diaphragm and the upper valve housing, the air release cavity being used for pressure relief in the valve cavity;

[0009] The explosion-proof barrier layer is located in the degassing cavity and is arranged in close contact with the diaphragm, and is clamped between the upper valve shell and the lower valve shell on all sides.

[0010] For example, in at least one embodiment of the present invention, an explosion-proof gas pressure regulating box is provided, wherein the explosion-proof barrier layer includes:

[0011] a fixing plate, the fixing plate being sandwiched between the upper valve housing and the lower valve housing;

[0012] There are several annular spring pieces, and the sizes of the several annular spring pieces gradually decrease and are connected in sequence. The outermost annular spring piece is connected to the fixed plate. The several annular spring pieces can expand and contract with each other to block the diaphragm.

[0013] For example, at least one embodiment of the present invention provides an explosion-proof gas pressure regulating box, wherein the inner wall of the fixed plate has an annular mounting groove, the outer wall of the annular spring piece has an annular insert, and the inner wall has an annular slot; the annular insert of the outermost annular spring piece has a sliding stroke to be inserted into the annular mounting groove, and the remaining annular spring pieces are sequentially connected with a sliding stroke through the annular insert and the annular slot.

[0014] For example, in at least one embodiment of the present invention, an explosion-proof gas pressure regulating box is provided, wherein the annular insert has notches, and the notches are triangular and arranged in a plurality of circles.

[0015] For example, in at least one embodiment of the present invention, an explosion-proof gas pressure regulating box is provided, wherein the notch of the annular slot has a retaining edge, and the retaining edge is used to prevent the annular insert from being pulled out.

[0016] For example, at least one embodiment of the present invention provides an explosion-proof gas pressure regulating box, wherein the pressure regulator further comprises:

[0017] A one-way valve is arranged on the diaphragm, and both ends are connected to the degassing cavity and the valve cavity. The explosion-proof barrier layer has a central opening, and the one-way valve is located at the central opening.

[0018] For example, in at least one embodiment of the present invention, an explosion-proof gas pressure regulating box is provided, wherein a sliding guide groove is further formed between the upper valve housing and the lower valve housing, the sliding guide groove being parallel to the axial direction of the fixed plate and arranged in a plurality of circles; the pressure regulator further comprises:

[0019] a sliding clamp, wherein the sliding clamp is slidably disposed in the sliding guide groove, and the diaphragm and the fixing plate are clamped on the sliding clamp;

[0020] A shattering piece is provided on the upper valve housing and the lower valve housing, and an end portion thereof extends into the sliding guide groove, and the shattering piece is used to limit and block the movement of the sliding clamp.

[0021] For example, in at least one embodiment of the present invention, an explosion-proof gas pressure regulating box is provided, wherein the shattering parts are arranged in sequence at intervals, and the arrangement direction is parallel to the axial direction of the fixing plate.

[0022] For example, at least one embodiment of the present invention provides an explosion-proof gas pressure regulating box, wherein the upper valve shell and the lower valve shell also have a shattering space, the shattering space is located on one side of the sliding guide groove, and the two ends of the shattering part extend into the sliding guide groove and the shattering space respectively.

[0023] For example, at least one embodiment of the present invention provides an explosion-proof gas pressure regulating box, wherein the pressure regulator further comprises:

[0024] A buffer spring is arranged in the sliding guide groove, and one end of the buffer spring acts on the sliding clamp, and the other end acts on the bottom of the sliding guide groove to push the sliding clamp. The buffer spring is arranged on both sides of the sliding clamp.

[0025] The beneficial effects of the embodiments of the present invention are:

[0026] In this invention, the explosion-proof barrier layer inside the pressure regulator and the double-layer explosion-proof structure of the box body are designed to enable the gas pressure regulating box to withstand higher-intensity explosion impacts. Under the same explosion intensity, compared with traditional gas pressure regulating boxes, the probability of diaphragm rupture in this explosion-proof gas pressure regulating box is reduced, effectively preventing large-scale gas leakage due to diaphragm rupture, and improving explosion-proof safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0028] Figure 1 This is a schematic diagram of the external structure of an explosion-proof gas pressure regulating box in one embodiment of the present invention;

[0029] Figure 2 for Figure 1 A schematic top view of the explosion-proof gas pressure regulating box in an embodiment of the present invention;

[0030] Figure 3 for Figure 2 AA cross-sectional structural diagram;

[0031] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB;

[0032] Figure 5 for Figure 3 Schematic diagram of the partially enlarged structure of middle C;

[0033] Figure 6 for Figure 5 Schematic diagram of the partially enlarged structure in D;

[0034] Figure 7 for Figure 1 Schematic diagram of the external structure of the annular spring in the embodiment of FIG;

[0035] Figure 8 for Figure 1 Schematic diagram of the internal structure of the annular spring in the embodiment;

[0036] Figure 9 This is a schematic diagram of the structure of the crushing parts and crushing space of a voltage regulator in another embodiment of the present invention;

[0037] In the figure: housing 100, pressure regulator 200, upper valve housing 210, lower valve housing 220, diaphragm 230, valve chamber 231, vent chamber 232, explosion-proof barrier 240, center opening 2401, fixing plate 241, annular mounting groove 2411, annular spring 242, annular insert 2421, annular slot 2422, notch 2423, retaining edge 2424, one-way valve 250, sliding guide groove 260, sliding clamp 270, buffer spring 271, shattering member 280, shattering space 290. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0039] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0040] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0043] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] Gas pressure regulating boxes play a key role in gas transmission and distribution systems. However, existing gas pressure regulating boxes have shortcomings in explosion protection, especially the rubber diaphragm in the pressure regulator, which is prone to rupture during an explosion, posing a greater safety hazard. This explosion-proof gas pressure regulating box aims to improve the explosion-proof capability of the pressure regulator, reduce the risk of gas leakage, and ensure the safe and stable operation of the gas pressure regulating box in complex and dangerous environments by setting an explosion-proof barrier layer in the pressure regulator's vent chamber. The remaining structures in the pressure regulator all use the valve body, pressure chamber exterior, diaphragm assembly (the rubber diaphragm connects to the valve stem, converting the pressure signal into mechanical displacement), adjustment spring (providing preload and setting the outlet pressure value), adjustment screw (adjusting the spring preload by rotation), and main valve core assembly (including valve disc, valve seat, and valve stem) in the existing technology to reduce the inlet pressure when the gas outlet pressure is too high, and increase the inlet pressure when the outlet pressure is too low. This will not be described in detail here. The following specific embodiments focus on the relevant structures for explosion-proof improvements.

[0045] like Figures 1 to 8As shown, it shows an explosion-proof gas pressure regulating box in one embodiment of the present invention. The upper valve shell 210 and the lower valve shell 220 are both made of high-strength explosion-proof metal materials and can withstand higher explosion impact pressures. The valve shell is manufactured using a precision casting process to ensure that the internal structure dimensions are accurate and the surface is smooth to reduce the resistance to gas flow. At the same time, the inner and outer surfaces of the valve shell are subjected to anti-corrosion treatment and sprayed with a corrosion-resistant coating, such as epoxy zinc-rich primer plus polyurethane topcoat, to improve the corrosion resistance of the valve shell and extend its service life. The upper valve shell 210 and the lower valve shell 220 are tightly connected by high-strength bolts to ensure the connection strength. A sealing gasket is set at the connection surface, and the gasket is made of a rubber material resistant to gas corrosion, such as fluororubber, to ensure good sealing between the valve shells and prevent gas leakage.

[0046] Diaphragm 230 utilizes a multi-layer composite structure to enhance its explosion-proof performance. The inner layer is a high-strength rubber layer that provides basic elasticity and sealing properties. The rubber material is hydrogenated nitrile rubber, which has excellent oil resistance, heat resistance, and aging resistance. The middle layer is a metal reinforcement mesh, such as stainless steel wire mesh, which increases the diaphragm's strength and tear resistance. The outer layer is covered with a rubber protective layer to prevent the metal mesh from direct contact with the gas and corrosion. This multi-layer composite structure enables the diaphragm to maintain its excellent pressure regulation function while also providing a certain degree of resistance to explosion shock. Diaphragm 230 is installed between the upper valve housing 210 and the lower valve housing 220 and is sealed by a sealing groove and sealant. The sealing groove is machined with high precision to ensure the accurate position of the diaphragm after installation. The sealant is an anaerobic sealant that is compatible with the diaphragm material. After curing, it forms a solid sealing layer to prevent gas leakage from around the diaphragm.

[0047] The explosion-proof barrier 240 can be made of a high-strength, impact-resistant, and flexible aramid fiber composite material. Aramid fiber has an extremely high strength-to-weight ratio, several times stronger than steel wire, and can effectively withstand the impact force generated by an explosion. At the same time, aramid fiber composite materials also have good chemical corrosion resistance and high-temperature resistance, and can adapt to the working environment inside the gas pressure regulating box. The shape of the explosion-proof barrier 240 matches the diaphragm 230 and is a circular thin sheet structure. It is designed with clamping structures such as slots or flanges that match the connection parts of the upper valve shell 210 and the lower valve shell 220 to ensure that it can be tightly clamped between the valve shells during installation. The explosion-proof barrier 240 is set in close proximity to the diaphragm 230. When an explosion occurs, it can immediately withstand the impact force and protect the diaphragm from being damaged.

[0048] The enclosure 100 features a double-layer explosion-proof structure, with the outer layer comprising high-strength steel plates capable of withstanding explosions of a certain intensity. The inner layer comprises an explosion-proof composite material, such as explosion-proof fiberglass reinforced plastic, which exhibits excellent thermal insulation, fire resistance, and explosion-proof properties. A buffer layer, filled with materials such as fire-resistant rock wool, is provided between the two layers to further absorb the energy of the explosion while also providing insulation and preventing internal heat from being transferred to the outside. The enclosure 100 is equipped with an explosion-proof door connected by high-strength hinges capable of withstanding significant impact forces. The door is equipped with special sealing devices, such as rubber sealing strips and a clamping device, to ensure a good seal during normal operation and prevent gas leakage. Furthermore, the enclosure 100 is provided with multiple ventilation openings, each equipped with fire-proof and explosion-proof ventilation shutters. This ensures ventilation while preventing external fire sources from entering the enclosure and causing an explosion.

[0049] As gas enters valve chamber 231 of pressure regulator 200, diaphragm 230 moves up and down based on pressure fluctuations within chamber 231. Working in conjunction with the pressure-regulating components within the chamber, it adjusts the gas pressure to an appropriate level before delivering it to downstream equipment. During this process, vent chamber 232 remains relatively stable, and explosion-proof barrier 240 maintains a tight fit with diaphragm 230, ensuring normal pressure regulation.

[0050] In the event of an explosion, the double-layer explosion-proof structure of housing 100 first resists the external blast, with the buffer layer absorbing some of the blast energy. Simultaneously, the pressure generated by the explosion is transmitted to the interior of voltage regulator 200, with explosion-proof barrier layer 240 bearing the brunt of the impact. Made of a high-strength aramid fiber composite material, it effectively disperses and absorbs the blast energy, preventing rupture of diaphragm 230 from direct impact.

[0051] The explosion-proof barrier 240 within the pressure regulator 200 and the double-layer explosion-proof structure of the housing 100 enable the gas pressure regulating box to withstand even higher-intensity explosions. Simulated explosion tests have shown that, compared to conventional gas pressure regulating boxes, the probability of rupture of the diaphragm 230 within this explosion-proof gas pressure regulating box is significantly reduced under comparable explosion intensities. This effectively prevents significant gas leakage from diaphragm rupture and significantly enhances explosion-proof safety.

[0052] The optimized design of the pressure regulator 200's components, including the high-strength connection between the upper and lower valve housings 210 and 220, the multi-layer composite structure of the diaphragm 230, and the overall explosion-proof design of the housing 100, enables the gas pressure regulator to operate stably in complex and hazardous environments. This reduces the possibility of equipment damage from explosions or other abnormalities, extending its service life and reducing maintenance costs.

[0053] This explosion-proof gas pressure regulating box is suitable for a variety of gas transmission and distribution scenarios, effectively improving explosion-proof safety performance in both urban gas supply systems and industrial gas pressure regulating stations. Its modular design facilitates upgrades to existing gas pressure regulating boxes, making it highly valuable for widespread application.

[0054] In some examples, such as Figure 6 As shown, the fixing plate 241 is an annular structure with an inner diameter that matches the inner diameter of the pressure regulator's internal bleed chamber 232, and an outer diameter that is slightly smaller than the outer diameter of the connecting surface between the upper valve housing 210 and the lower valve housing 220. The thickness of the fixing plate 241 is determined based on the overall structure of the pressure regulator and the pressure it must withstand, ensuring sufficient strength without compromising the internal spatial layout of the pressure regulator due to excessive thickness.

[0055] During installation, the fixing plate 241 is sandwiched between the upper valve housing 210 and the lower valve housing 220, to which the diaphragm 230 is already installed. The connecting surfaces of the upper and lower valve housings 210 and 220 are designed with an annular groove that mates with the fixing plate 241. The fixing plate 241 fits within the groove, and the upper and lower valve housings 210 and 220 are fastened together using high-strength bolts, thereby firmly clamping the fixing plate 241 in place and preventing it from shifting during operation of the pressure regulator.

[0056] Annular spring piece 242 is constructed from a highly elastic and strong material with a high elastic modulus to quickly recover after impact. It also possesses excellent corrosion resistance, making it suitable for use within the internal environment of a gas surge tank. Through specialized heat treatment and surface treatment processes, the elasticity and strength of annular spring piece 242 are further optimized, enabling it to better withstand the impact of explosions.

[0057] Dimensions and Connections: Multiple annular spring pieces 242 are provided, their dimensions gradually decreasing from the outside to the inside. Adjacent annular spring pieces 242 are sequentially connected via flexible connectors. The outermost annular spring piece 242 is connected to the fixed plate 241. Appropriate gaps are maintained between adjacent annular spring pieces 242 to ensure they do not interfere with each other during expansion and contraction, while also allowing them to work together under the impact of an explosion, pulling upward to form a cone-like structure. This, in turn, blocks the diaphragm 230, achieving explosion protection and preventing damage to the diaphragm 230, thereby preventing gas leakage from the valve chamber 231.

[0058] Each annular spring piece 242 is a thin, circular ring-shaped structure, with a width adjusted based on its location and the required pressure. The outer and inner edges of the annular spring piece 242 are rounded to prevent scratching other components or damage to itself during expansion and contraction. Furthermore, to enhance the elasticity and deformation capabilities of the annular spring piece 242, several annular grooves are machined into its surface. The depth and width of the grooves are optimized based on the size and material properties of the spring piece.

[0059] The explosion-proof barrier 240 is integrally mounted against the diaphragm 230. The annular spring pieces 242 are designed to expand and contract under the impact of an explosion, effectively blocking the diaphragm 230 and preventing it from rupturing due to excessive impact. During normal pressure regulation, the presence of the annular spring pieces 242 does not significantly hinder the normal movement of the diaphragm 230. The diaphragm 230 can still move smoothly up and down according to pressure changes within the valve chamber 231, achieving normal pressure regulation.

[0060] A fixing plate 241 is sandwiched between the upper and lower valve housings, ensuring that the explosion-proof barrier 240 is tightly integrated with the overall structure of the pressure regulator. The connection between the upper and lower valve housings 210 and 220 provides a stable mounting base for the explosion-proof barrier 240. In the event of an explosion, the impact force exerted on the explosion-proof barrier 240 is evenly transferred to the valve housing, preventing damage to the explosion-proof barrier 240 due to localized excessive force.

[0061] Normal Operation: During normal operation of the gas pressure regulating box, the diaphragm 230 of the pressure regulator 200 moves up and down according to changes in the gas pressure within the valve chamber 231, regulating the gas pressure. At this time, the annular spring 242 of the explosion-proof barrier 240 is in a natural state, gently fitting against the diaphragm 230 without affecting its normal movement. The vent chamber 232 is also in a normal pressure equilibrium state.

[0062] Explosion impact state: When an explosion occurs, the powerful impact force generated instantly acts first on the explosion-proof barrier layer 240. The outermost annular shrapnel 242 bears the brunt of the impact. Due to its good elasticity and high strength, it can absorb and disperse part of the impact force. As the impact force is further transmitted, multiple annular shrapnel 242 adapt to pressure changes by expanding and contracting with each other according to the magnitude of the impact intensity, and work together to prevent the impact force from being transmitted to the diaphragm 230. The flexible connectors between the annular shrapnel 242 ensure that they remain connected during the expansion and contraction process and jointly withstand the impact. At the same time, the fixing plate 241 fixes the explosion-proof barrier layer 240 as a whole between the upper and lower valve shells to ensure that the explosion-proof barrier layer 240 will not shift when impacted, thereby effectively protecting the diaphragm 230, reducing the risk of its rupture, and preventing gas leakage.

[0063] The explosion-proof barrier 240, composed of a fixed plate 241 and annular springs 242, significantly enhances the protection of the diaphragm 230. In simulated explosion tests, compared to a single-material explosion barrier, the probability of rupture of the diaphragm 230 under the same explosion intensity was reduced, further enhancing the explosion-proof safety of the gas pressure regulating box and providing more reliable protection for the stable operation of the gas system.

[0064] The design of the annular spring pieces 242, which can expand and contract, allows the explosion-proof barrier 240 to better adapt to explosions of varying intensities. Whether experiencing a small explosion or a strong one, the explosion-proof barrier 240 effectively disperses and absorbs the impact force through the expansion and contraction of the annular spring pieces 242, ensuring that the diaphragm 230 remains within a safe load range, thus enhancing the explosion-proof barrier 240's adaptability to complex explosion conditions.

[0065] The design of explosion-proof barrier 240 effectively prevents explosions while not significantly affecting the normal pressure regulation function of the pressure regulator. During normal operation, the slight contact between annular spring 242 and diaphragm 230 does not hinder the movement of diaphragm 230, allowing diaphragm 230 to smoothly regulate pressure according to pressure changes within valve chamber 231, ensuring the normal operation of the gas pressure regulating box.

[0066] In some examples, such as Figures 5 to 8 As shown, the connection structure between the various components of the explosion-proof barrier layer is further optimized. By providing an annular mounting groove 2411 on the inner wall of the fixing plate 241 and designing an annular insert 2421 and an annular slot 2422 on the annular spring piece 242, a sliding travel between the annular spring pieces 242 and between the annular spring pieces 242 and the fixing plate 241 is achieved. This further optimizes the structure of the explosion-proof barrier layer 240 to more effectively resist the impact of explosions and ensure the safe and stable operation of the gas pressure regulating box in hazardous environments. The corresponding specific embodiments are described in detail below.

[0067] The fixing plate 241, which connects the explosion-proof barrier 240 to the regulator housing, has an annular mounting groove 2411 formed on its inner wall. The groove 2411 has a rectangular cross-section, ensuring stable insertion of the annular insert 2421 of the annular spring 242 while providing sufficient sliding space for the annular spring 242 to smoothly extend and retract under the impact of an explosion.

[0068] The annular insert 2421 and annular slot 2422 are designed with an annular insert 2421 on the outer wall of each annular spring piece 242 and an annular slot 2422 on the inner wall. The dimensions of the annular insert 2421 are compatible with the annular mounting groove 2411, ensuring that it can be inserted into the annular mounting groove 2411 with sufficient sliding travel. The dimensions of the annular slot 2422 correspond to the annular insert 2421, so that adjacent annular spring pieces 242 can be inserted and inserted in sequence with sufficient sliding travel. The edges of the annular insert 2421 and the annular slot 2422 can be rounded to prevent scratches on other components or damage to the annular insert 2421 during insertion and sliding.

[0069] The annular spring piece 242 is assembled with the fixing plate 241. During assembly, the annular insert 2421 of the outermost annular spring piece 242 is inserted into the annular mounting groove 2411 on the inner wall of the fixing plate 241 with sufficient sliding travel. Once inserted, the annular spring piece 242 is able to slide circumferentially within the groove to a certain extent, providing space for the annular spring piece 242 to expand and contract during an explosive impact. Furthermore, a suitable amount of high-temperature-resistant grease can be applied between the annular insert 2421 and the annular mounting groove 2411 to further reduce sliding friction and ensure smooth sliding of the annular spring piece 242 within the groove.

[0070] The remaining annular spring pieces 242 are inserted sequentially, in ascending order of size, through the annular inserts 2421 and annular slots 2422, with a sliding travel. During the insertion process, uniform spacing is ensured between adjacent annular spring pieces 242, ensuring they do not interfere with each other during expansion and contraction, while also enabling coordinated operation under the impact of an explosion. After the annular insert 2421 of each annular spring piece 242 is inserted into the annular slot 2422 of the adjacent inner annular spring piece 242, it can also slide within the slot to a certain extent. This allows the entire annular spring piece 242 assembly to more effectively disperse and absorb energy when subjected to an explosive impact through relative sliding and expansion between the spring pieces. It should be noted that the sliding of annular spring piece 242 on another annular spring piece 242 does not involve horizontal sliding, which is not possible. Instead, the annular spring piece 242 slides diagonally upward toward the central axis. Several annular spring pieces 242 are elongated into a cone-like structure to cushion the explosion, block the diaphragm 230, and prevent damage to the diaphragm 230, thereby achieving explosion protection.

[0071] After assembly, the explosion-proof barrier 240 is completely attached to the diaphragm 230. During normal pressure regulation, the slight elastic contact of the annular spring 242 does not hinder the normal movement of the diaphragm 230. The diaphragm 230 can smoothly move up and down according to the changes in the gas pressure in the valve chamber 231, achieving precise regulation of the gas pressure. In the event of an explosion, the explosion-proof barrier 240 can quickly respond, effectively blocking the impact force from being transmitted to the diaphragm 230 through the expansion and contraction and sliding of the annular spring 242, protecting the diaphragm 230 from damage and preventing gas leakage.

[0072] The fixing plate 241 is sandwiched between the upper valve housing 210 and the lower valve housing 220 of the pressure regulator. The clamping force of the upper and lower valve housings 210 and 220 ensures that the explosion-proof barrier 240 is tightly integrated with the overall structure of the pressure regulator. During an explosion, the impact force exerted on the explosion-proof barrier 240 is evenly transmitted to the upper and lower valve housings 210 and 220 via the fixing plate 241, preventing damage to the explosion-proof barrier 240 due to localized excessive force. Furthermore, the high-strength structure of the pressure regulator valve housing provides stable support for the explosion-proof barrier 240, ensuring that it maintains its structural integrity during an explosion and continues to perform its explosion-proof function.

[0073] During normal operation of the gas pressure regulating box, the diaphragm 230 within the pressure regulator 200 moves up and down based on fluctuations in the gas pressure within the valve chamber 231, regulating the gas pressure. At this point, the annular springs 242 of the explosion-proof barrier 240 are in a natural state, gently fitting against the diaphragm 230. The sliding connections between the annular springs 242 and between the annular springs 242 and the fixing plate 241 are relatively static, maintaining no impact on the normal operation of the diaphragm 230. The vent chamber 232 also maintains normal pressure balance.

[0074] Once an explosion occurs, the powerful impact force generated instantly will first act on the explosion-proof barrier layer 240. The outermost annular spring fragment 242 bears the brunt of the impact. Due to its sliding connection with the fixed plate 241 through the annular mounting groove 2411 and the annular insert 2421, it can slide and expand and contract to a certain extent along the groove under the action of the impact force, thereby absorbing and dispersing part of the impact force. As the impact force is further transmitted, the internal annular spring fragment 242 expands and contracts and slides in turn through the sliding plug-in structure between the annular insert 2421 and the annular slot 2422. Each annular spring fragment 242 works together to disperse and absorb the impact force throughout the entire explosion-proof barrier layer 240. This plug-in structure with a sliding stroke allows the explosion-proof barrier layer 240 to better adapt to changes in the direction and intensity of the explosion impact force, effectively preventing the impact force from being transmitted to the diaphragm 230, thereby reducing the risk of rupture of the diaphragm 230 and ensuring the safe operation of the gas pressure regulating box.

[0075] Through the design of the annular mounting groove 2411 of the fixing plate 241 and the annular insert 2421 and the annular slot 2422 of the annular spring piece 242, the explosion-proof capability of the explosion-proof barrier 240 is significantly improved, thereby enhancing the explosion-proof safety of the gas pressure regulating box and providing more reliable protection for the stable operation of the gas transmission and distribution system.

[0076] The sliding and interlocking structure between the annular spring pieces 242 and between the annular spring pieces 242 and the fixed plate 241 enables the explosion-proof barrier 240 to more flexibly adapt to changes in explosive impact forces. Whether it is a sudden, high-intensity impact or a sustained, fluctuating impact, the explosion-proof barrier 240 effectively disperses and absorbs energy through the sliding and expansion and contraction of the annular spring pieces 242, ensuring that the diaphragm 230 remains within a safe force range, thereby improving the explosion-proof barrier 240's adaptability to various complex explosion conditions.

[0077] The design of the explosion-proof barrier 240 not only enhances explosion-proof performance but also fully considers its impact on the normal pressure regulation function of the pressure regulator. During normal operation, the gentle contact between the annular spring piece 242 and the diaphragm 230, as well as the sliding connection between the annular spring pieces 242, does not significantly hinder the movement of the diaphragm 230. The diaphragm 230 can accurately regulate pressure according to pressure changes in the valve chamber 231, ensuring that the normal operation of the gas pressure regulating box is not affected.

[0078] In some examples, such as Figure 7-Figure 8 As shown, the annular insert 2421 is provided with a notch 2423, which is triangular in shape. This shape ensures structural strength while effectively improving the deformation flexibility of the annular spring 242 under stress. The vertex angle of the triangular notch has been optimized and is set between 30° and 60°.

[0079] Several triangular notches 2423 are evenly spaced along the circumference of the annular insert 2421. Adjacent notches 2423 are evenly spaced and are rationally distributed based on the circumference of the annular insert 2421 and the number of notches. This even circumferential arrangement ensures that the annular shrapnel 242 deforms uniformly in all directions when subjected to an explosive impact, thereby more effectively dispersing the impact force.

[0080] When an explosion occurs, annular shrapnel 242 is subjected to impact forces from various directions. The presence of triangular notches 2423 allows annular insert 2421 to deform locally at the notch when subjected to force. These deformed areas absorb and disperse the impact force, preventing stress from concentrating at a single point or area. For example, when an impact force acts on one side of annular shrapnel 242, notch 2423 on that side of annular insert 2421 will first undergo elastic deformation, converting the impact force into stored elastic potential energy. This energy is then dispersed to other parts of annular shrapnel 242 through the overall deformation of the annular shrapnel 242.

[0081] Because the notches 2423 are evenly arranged along the circumference, when a certain area is subjected to a significant impact, the deformation of the notches 2423 can drive the coordinated movement of the annular spring pieces 242 in adjacent areas. This coordinated movement enables the entire annular spring piece 242 assembly to more effectively cope with complex and variable explosive impact forces, thereby improving the overall explosion-proof performance of the explosion-proof barrier 240. For example, when a particular annular spring piece 242 is subjected to an oblique impact, the notches 2423 on its annular insert 2421 deform. This deformation is transmitted to the other annular spring pieces 242 through the connection between the annular insert 2421 and the annular slot 2422 between adjacent annular spring pieces 242, prompting them to adjust their positions and shapes to better disperse the impact force.

[0082] By providing triangular notches 2423 in annular insert 2421 and arranging them evenly around the circumference, the explosion-proof barrier 240 significantly improves its deformation capacity and energy dispersion efficiency under explosive impact. This reduces the probability of rupture of the diaphragm 230 under the same explosion intensity, further enhancing the explosion-proof safety of the gas pressure regulating box.

[0083] Notch 2423 allows annular spring 242 to deform and move more flexibly under impact forces from different directions, improving the adaptability of explosion-proof barrier 240 to complex explosion conditions. Whether subjected to a single strong impact or a combination of impacts from multiple directions, explosion-proof barrier 240 can more effectively protect diaphragm 230.

[0084] Although the notch 2423 is provided, the structural strength of the annular insert 2421 is not significantly affected, and the structural stability and explosion-proof performance of the explosion-proof barrier 240 are not reduced due to the presence of the notch 2423, thereby ensuring the long-term reliable operation of the gas pressure regulating box.

[0085] In some examples, such as Figure 8 As shown, the retaining edge 2424 is arranged around the notch of the annular slot 2422 and is in the shape of a continuous ring. It is used to effectively prevent the annular insert 2421 from being pulled out without causing excessive obstruction to the normal sliding of the annular insert 2421 in the annular slot 2422. It is ensured to have sufficient strength to withstand the outward pulling force that may be generated by the annular insert 2421 under the impact of an explosion.

[0086] The retaining edge 2424 and the annular slot 2422 are manufactured using an integrated process, and the connection between the retaining edge 2424 and the annular slot 2422 can be chamfered to reduce stress concentration and improve structural reliability.

[0087] During normal operation of the gas pressure regulating box, the annular insert 2421 between the annular spring pieces 242 slides relatively smoothly within the annular slot 2422, and the retaining edge 2424 barely interferes with the normal sliding of the annular insert 2421. Due to the low height of the retaining edge 2424, the annular insert 2421 only has to overcome a slight frictional force when sliding within the slot, and this frictional force does not significantly affect the normal pressure regulating function of the pressure regulator or the stability of the explosion-proof barrier 240 under normal conditions.

[0088] When an explosion occurs, the annular spring piece 242 is subjected to a strong impact force, and the annular insert 2421 may tend to be pulled outward due to the impact force. In this case, the retaining edge 2424 can effectively prevent the annular insert 2421 from being dislodged from the annular slot 2422. Even under extreme explosive shocks, the retaining edge 2424, thanks to its high-strength connection with the annular slot 2422 and its own structural strength, firmly holds the annular insert 2421, ensuring that the connection between the annular spring piece 242 does not fail, thereby maintaining the overall structural integrity of the explosion-proof barrier 240, ensuring that it can continue to effectively resist the impact of the explosion and protect the diaphragm 230 from damage.

[0089] The provision of the retaining edge 2424 effectively prevents the annular insert 2421 from being pulled out of the annular slot 2422 under the impact of an explosion, greatly enhancing the stability of the connection between the annular spring pieces 242 inside the explosion-proof barrier 240. Due to the improved structural stability of the explosion-proof barrier 240, it can more reliably protect the diaphragm 230 under the impact of an explosion. In practical applications, this means that when the gas pressure regulating box faces the risk of explosion, the risk of gas leakage due to the rupture of the diaphragm 230 is significantly reduced, further improving the explosion-proof reliability of the gas pressure regulating box and providing a stronger guarantee for the safe operation of the gas transmission and distribution system. While effectively enhancing the explosion-proof performance, the design of the retaining edge 2424 has almost no effect on the sliding of the annular spring pieces 242 during normal operation and the normal pressure regulating function of the pressure regulator.

[0090] In some examples, such as Figure 5 As shown, the one-way valve 250 is provided on the diaphragm 230 , and both ends are connected to the air release cavity 232 and the valve cavity 231 , ensuring that the gas can be pressure-released in one direction.

[0091] The center opening 2401 of the explosion-proof barrier layer 240 is located at the center of the explosion-proof barrier layer 240 and is circular in shape. Its diameter is slightly larger than the outer diameter of the one-way valve 250, ensuring that the one-way valve 250 can be smoothly installed at the center opening 2401, and a certain gap is maintained between the one-way valve 250 and the center opening 2401 to avoid interference between the two.

[0092] When the gas pressure regulating box operates normally, the pressure regulator 200 adjusts the gas pressure in the valve chamber 231 according to the downstream gas demand. The design of the one-way valve 250 can relieve pressure and exhaust when the pressure in the valve chamber 231 is too high to avoid accidents.

[0093] Explosion-proof process: In the event of an explosion, explosion-proof barrier 240 first withstands the explosive force from the vent chamber 232, protecting diaphragm 230 from damage. Because the one-way valve 250 is located at the center opening 2401, explosion-proof barrier 240 can disperse and cushion the impact force acting on the one-way valve 250 to a certain extent, reducing the risk of damage to the one-way valve 250. Even in extreme cases, if diaphragm 230 is damaged, the one-way valve 250 can prevent large-scale gas leakage from valve chamber 231 into the vent chamber 232, further preventing further safety hazards caused by gas leakage.

[0094] The setting of the one-way valve 250 enables the pressure regulator 200 to more accurately control the flow of gas between the valve chamber 231 and the vent chamber 232 during the process of regulating the gas pressure, effectively avoiding the impact of pressure fluctuations on the performance of the pressure regulator and improving the stability and reliability of pressure regulation.

[0095] In some examples, such as Figure 9 As shown, a sliding guide groove 260 is formed between the upper valve housing 210 and the lower valve housing 220. The sliding guide groove 260 is in the shape of a rectangular groove and is parallel to the axial direction of the fixed plate 241. Multiple sliding guide grooves 260 are evenly arranged along the circumferential direction. The number is determined according to the size of the pressure regulator 200 and actual needs, thereby ensuring that the diaphragm 230 can be evenly supported and guided in all directions.

[0096] The sliding guide groove 260 is formed by precision machining after the upper valve housing 210 and the lower valve housing 220 are assembled. Half grooves are machined at corresponding positions of the upper valve housing 210 and the lower valve housing 220. When assembled, the two half grooves are butted together to form a complete sliding guide groove 260.

[0097] The sliding clamp 270 is generally rectangular in shape, with its length and width matching the sliding guide groove 260 to ensure smooth sliding within the guide groove. A clamping groove for clamping the diaphragm 230 and the fixing plate 241 is provided on one side of the sliding clamp 270. The inner wall of the clamping groove is provided with anti-slip grooves to enhance the clamping force on the diaphragm 230.

[0098] The sliding clamp 270 is installed in the sliding guide groove 260 and can only slide in the axial direction due to the constraint of the guide groove. During installation, the edge of the diaphragm 230 is first embedded in the clamping groove of the sliding clamp 270, and then the sliding clamp 270 and the diaphragm 230 are inserted into the sliding guide groove 260.

[0099] The shatter element 280 is designed to be made of materials such as ceramic or glass, which are highly brittle. It is plate-shaped, with one end secured to the upper valve housing 210 or lower valve housing 220 and the other end extending into the sliding guide groove 260. This can be secured using a clamping mechanism to ensure the connection between the shatter element 280 and the valve housing. The end of the shatter element 280 that extends into the sliding guide groove 260 is flat, making it easier to break under high impact.

[0100] During normal pressure regulation, the movement of the shattering element 280 relative to the sliding clamp 270 is restricted by the shattering element 280, preventing it from sliding and ensuring that the diaphragm 230 remains in a defined position for pressure regulation. However, in the event of an explosion, the powerful impact force is transmitted to the sliding clamp 270, causing it to rapidly move and strike the shattering element 280. Due to its brittleness, the shattering element 280 shatters upon impact, freeing the sliding clamp 270 to move freely within the sliding guide groove 260. This provides a buffer for the diaphragm 230 and prevents it from rupturing due to the sudden, excessive impact force.

[0101] During normal operation of the gas pressure regulating box, the pressure regulator 200 adjusts the pressure based on changes in the gas pressure. The pressure difference between the valve chamber 231 and the vent chamber 232 causes the diaphragm 230 to move. The shattering element 280 restricts the movement of the sliding clamp 270, ensuring that the diaphragm 230 maintains a stable pressure regulation function.

[0102] When an explosion occurs, the impact force generated by the explosion first acts on the upper valve shell 210, the lower valve shell 220 and the internal components. Under the action of the impact force, the sliding clamp 270 quickly moves toward the shattering part 280, hitting the shattering part 280 and breaking it. After the shattering part 280 is broken, the sliding clamp 270 is no longer restricted and can slide freely in the sliding guide groove 260, providing a buffer space for the diaphragm 230. At the same time, the explosion-proof barrier 240 continues to withstand the impact force of the explosion and protect the diaphragm 230. In this way, the risk of the diaphragm 230 rupturing during an explosion is reduced, and the explosion-proof performance of the gas pressure regulating box is improved. The explosion-proof barrier 240 can be set on the upper valve shell 210 and the lower valve shell 220, or it can be adjusted to be designed on the explosion-proof barrier 240, both of which can achieve better results.

[0103] In some examples, such as Figure 9As shown, the number of shattering elements 280 can be designed to be multiple, depending on the size of the voltage regulator 200 and the expected explosion intensity. For a voltage regulator 200 of general specifications, the number of shattering elements 280 in each sliding guide groove 260 is set to 3-5. If the voltage regulator 200 is used in a scenario with a higher explosion risk or more stringent explosion protection requirements, the number can be appropriately increased to 5-7. This number setting can provide sufficient cushioning and protection for the sliding clamp 270 under different explosion conditions, ensuring the safety of the diaphragm 230 under the impact of the explosion.

[0104] The shattering elements 280 are arranged in a sequentially spaced arrangement along the axis parallel to the fixing plate 241. The spacing between adjacent shattering elements 280 is uniform, typically set between 15 and 25 mm. This spacing ensures that the shattering elements 280 have sufficient space within the sliding guide groove 260 to function. It also ensures that, in the event of an explosion, the sliding clamp 270 will sequentially impact the shattering elements 280 during movement, gradually dissipating the impact force and providing continuous and effective cushioning for the diaphragm 230.

[0105] During normal pressure regulation, multiple shattering elements 280 jointly restrict the movement of the sliding clamp 270, ensuring that the diaphragm 230 regulates pressure within an appropriate range. When an explosion occurs, the sliding clamp 270 rapidly moves axially along the sliding guide groove 260 under the powerful impact force. Because the shattering elements 280 are arranged in a sequentially spaced arrangement, the sliding clamp 270 will first impact the adjacent shattering element 280. Upon impact, the shattering element 280 shatters, releasing some of the impact force while also reducing the speed of the sliding clamp 270. Subsequently, the sliding clamp 270 continues to move, sequentially impacting subsequent shattering elements 280. This step-by-step impact and shattering method gradually dissipates the impact force generated by the explosion, providing a more detailed and effective buffer for the diaphragm 230 and further reducing the risk of rupture due to excessive instantaneous impact force.

[0106] This sequentially spaced arrangement of shattering elements 280 can better adapt to explosions of varying intensities. For weaker explosions, the sliding clamp 270 may only strike a few shattering elements 280. These shattering elements 280, once broken, absorb the impact force and protect the diaphragm 230. However, for stronger explosions, the sliding clamp 270 will sequentially strike more shattering elements 280. The continuous shattering of multiple shattering elements 280 effectively dissipates the impact force, ensuring that the diaphragm 230 is effectively protected even in extreme explosions.

[0107] By optimizing the arrangement of the shattering parts 280, the step-by-step buffering mechanism of the multiple shattering parts 280 can more effectively absorb the impact force of the explosion, provide more reliable protection for the diaphragm 230, and greatly improve the explosion-proof safety of the gas pressure regulating box.

[0108] The sequentially spaced arrangement of the shattering elements 280 enables the pressure regulator 200 to better cope with explosions of varying intensities, enhancing the adaptability of the buffer system. Whether the explosion is minor or severe, the gradual shattering of the shattering elements 280 effectively dissipates the impact force, ensuring the safety of the diaphragm 230 and improving the reliability of the gas pressure regulator under various explosion conditions.

[0109] During normal pressure regulation, multiple shattering elements 280 jointly constrain the sliding clamp 270. Compared to a single shattering element, this allows for more precise control of the sliding clamp 270's range of motion, further improving the stability of the pressure regulator 200 during regulation. This helps maintain the stability of the gas pressure regulating box's output pressure, meeting the gas pressure stability requirements of downstream gas-consuming equipment.

[0110] In some examples, such as Figure 9 As shown, a crushing space 290 can also be designed. The crushing space 290 is provided within the upper valve housing 210 and the lower valve housing 220, and is located on one side of the sliding guide groove 260. The crushing space 290 has a rectangular cavity structure. Its length is the same as the sliding guide groove 260, and its width is determined by the internal space of the pressure regulator 200 and the size of the crushing element 280. This provides sufficient space for the crushing element 280 to be crushed, while not excessively occupying the internal space of the pressure regulator 200 and affecting the normal layout of other components.

[0111] The crushing space 290 is primarily used to accommodate fragments of the crushing element 280 after being shattered, preventing the fragments from accumulating within the sliding guide groove 260 and affecting the normal sliding of the sliding clamp 270. Furthermore, the crushing space 290 can also, to a certain extent, cushion the impact force generated by the crushing of the crushing element 280, thereby reducing the impact on other components of the voltage regulator 200.

[0112] The two ends of the shattering element 280 extend into the sliding guide groove 260 and the shattering space 290, respectively. The end of the shattering element 280 that extends into the sliding guide groove 260 is flat, which is used to make it easier to shatter when hit by the sliding clamp 270. When an explosion occurs, the sliding clamp 270 hits the shattering element 280 under the action of the impact force. After the shattering element 280 shatters, the fragments will fly into the shattering space 290. The inner wall of the shattering space 290 can be provided with some buffering structures, such as rubber pads or corrugated structures, to cushion and block the flying fragments and prevent them from rebounding back into the sliding guide groove 260. At the same time, the existence of the shattering space 290 allows the shattering element 280 to release energy more fully when shattering, further enhancing the protection of the sliding clamp 270 and the diaphragm 230.

[0113] The provision of the crushing space 290 does not weaken the structural strength of the upper valve housing 210 and the lower valve housing 220. On the contrary, through reasonable design, some reinforcing rib structures are added inside the valve housing, arranged around the crushing space 290 and the sliding guide groove 260, thereby enhancing the overall rigidity of the valve housing.

[0114] Considering that shatter element 280 may need replacement after repeated explosions, the design of shatter chamber 290 facilitates maintenance. When shatter element 280 needs to be replaced, it can be easily inspected and replaced by removing removable components on the valve housing, such as the access cover or side panels. Furthermore, debris within shatter chamber 290 is easily removed by simply opening the corresponding access port, improving maintenance efficiency for the pressure regulator 200.

[0115] The combination of shatter space 290 and shatter element 280 further enhances the explosion-proof performance of pressure regulator 200. Shatter space 290 effectively accommodates and buffers the fragments of shatter element 280, minimizing damage to sliding clamp 270 and diaphragm 230 during explosions, significantly enhancing the explosion-proof safety of the gas pressure regulating box.

[0116] The reinforcing rib structure provided around the shattering space 290 and the sliding guide groove 260 enhances the overall structural strength of the upper valve housing 210 and the lower valve housing 220. In actual applications, the pressure regulator 200 can better withstand the impact of explosions and long-term pressure changes, reducing the possibility of deformation or damage to the valve housing, and improving the structural reliability and service life of the pressure regulator 200. The design of the shattering space 290 facilitates the maintenance of the pressure regulator 200. The shattering parts 280 are designed to be replaced in a modular manner, making replacement and debris cleaning more convenient. This allows the gas pressure regulating box to maintain and inspect the explosion-proof components more promptly during long-term operation, ensuring that it always maintains good explosion-proof performance.

[0117] In some examples, such as Figure 9 As shown, a buffer spring 271 can also be designed. The buffer spring 271 is located in each sliding guide groove 260, with its two ends acting on the sliding clamp 270 and the bottom of the sliding guide groove 260, respectively. During installation, positioning grooves are machined at the bottom of the sliding guide groove 260, corresponding to the positions on both sides of the sliding clamp 270, to match the outer diameter of the buffer spring 271. The depth of the groove is slightly greater than the wire diameter of the spring to prevent it from deflecting during operation.

[0118] The other end of buffer spring 271 acts on sliding clamp 270. Protrusions or hooks matching the spring ends are provided on both sides of sliding clamp 270 to ensure the spring is securely connected to sliding clamp 270 and prevents it from falling off during expansion and contraction. In this way, buffer spring 271 can provide a stable pushing force for sliding clamp 270.

[0119] When an explosion occurs, the powerful impact force generated by the explosion causes the sliding clamp 270 to move rapidly within the sliding guide groove 260, striking the shattering member 280. During this process, the buffer spring 271 performs a dual buffering function. On the one hand, before the sliding clamp 270 strikes the shattering member 280, the buffer spring 271 absorbs some of the impact force through its own compression, slowing the movement of the sliding clamp 270 and reducing the impact force on the shattering member 280. On the other hand, after the shattering member 280 shatters, the buffer spring 271 quickly rebounds, providing a reverse thrust for the sliding clamp 270, limiting its movement within the sliding guide groove 260. This prevents excessive movement of the sliding clamp 270 and the resulting impact on the diaphragm 230, further protecting the diaphragm 230 from damage.

[0120] The dual buffering effect of the buffer spring 271 effectively reduces the impact force of the sliding clamp 270 on the shattering member 280 and limits the excessive movement of the sliding clamp 270, thereby better protecting the diaphragm 230.

[0121] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An explosion-proof gas pressure regulating box, characterized in that: It comprises a box (100) and a voltage regulator (200), wherein the voltage regulator (200) is arranged in the box (100) and comprises: an upper valve housing (210) and a lower valve housing (220); a diaphragm (230), the diaphragm (230) being arranged between the upper valve housing (210) and the lower valve housing (220), a valve cavity (231) being formed between the diaphragm (230) and the lower valve housing (220), the valve cavity (231) being used for pressure regulation, and a degassing cavity (232) being formed between the diaphragm (230) and the upper valve housing (210), the degassing cavity (232) being used for depressurizing the valve cavity (231); an explosion-proof barrier layer (240), the explosion-proof barrier layer (240) being located in the degassing cavity (232), being disposed in contact with the diaphragm (230), and being clamped around between the upper valve housing (210) and the lower valve housing (220); The explosion-proof barrier layer (240) comprises: a fixing plate (241), the fixing plate (241) being sandwiched between the upper valve housing (210) and the lower valve housing (220); An annular spring piece (242), wherein the annular spring pieces (242) are multiple, and the sizes of the multiple annular spring pieces (242) gradually decrease and are connected in sequence, the annular spring piece (242) at the outermost end is connected to the fixing plate (241), and the multiple annular spring pieces (242) can expand and contract with each other to block the diaphragm (230).

2. The explosion-proof gas pressure regulating box according to claim 1, characterized in that: The inner wall of the fixing plate (241) has an annular mounting groove (2411), the outer wall of the annular spring piece (242) has an annular inserting portion (2421), and the inner wall has an annular slot (2422); the annular inserting portion (2421) of the outermost annular spring piece (242) has a sliding stroke and is inserted into the annular mounting groove (2411), and the remaining annular spring pieces (242) are sequentially plugged into the annular inserting portion (2421) and the annular slot (2422) with a sliding stroke.

3. The explosion-proof gas pressure regulating box according to claim 2, characterized in that: The annular insert (2421) has a notch (2423), and the notch (2423) is triangular and arranged in a plurality of circles.

4. The explosion-proof gas pressure regulating box according to claim 2, characterized in that: The notch of the annular slot (2422) is provided with a blocking edge (2424), and the blocking edge (2424) is used to prevent the annular inserting portion (2421) from being pulled out.

5. The explosion-proof gas pressure regulating box according to claim 1, characterized in that: The voltage regulator (200) further includes: A one-way valve (250) is provided on the diaphragm (230), and its two ends are connected to the degassing cavity (232) and the valve cavity (231); the explosion-proof barrier layer (240) has a central opening (2401), and the one-way valve (250) is located at the central opening (2401).

6. The explosion-proof gas pressure regulating box according to claim 1, characterized in that: A sliding guide groove (260) is further formed between the upper valve housing (210) and the lower valve housing (220). The sliding guide groove (260) is parallel to the axial direction of the fixed plate (241) and is arranged in a plurality of circles. The pressure regulator (200) further includes: a sliding clamp (270), wherein the sliding clamp (270) is slidably disposed in the sliding guide groove (260), and the diaphragm (230) and the fixing plate (241) are clamped on the sliding clamp (270); A shattering member (280) is provided on the upper valve housing (210) and the lower valve housing (220), and an end portion thereof extends into the sliding guide groove (260). The shattering member (280) is used to limit and block the movement of the sliding clamp (270).

7. The explosion-proof gas pressure regulating box according to claim 6, characterized in that: The shattering pieces (280) are arranged in sequence in a plurality of intervals, and the arrangement direction is parallel to the axial direction of the fixing plate (241).

8. The explosion-proof gas pressure regulating box according to claim 7, characterized in that: The upper valve housing (210) and the lower valve housing (220) further have a crushing space (290), and the crushing space (290) is located on one side of the sliding guide groove (260). Both ends of the crushing member (280) extend into the sliding guide groove (260) and the crushing space (290), respectively.

9. The explosion-proof gas pressure regulating box according to claim 8, characterized in that: The voltage regulator (200) further includes: A buffer spring (271) is provided in the sliding guide groove (260), and one end of the buffer spring acts on the sliding clamp (270), and the other end acts on the bottom of the sliding guide groove (260) to push the sliding clamp (270). The buffer spring (271) is provided on both sides of the sliding clamp (270).

Images