Explosion-proof pressure relief device

Abstract

The embodiment of the present application provides an explosion-proof pressure relief device, and relates to the technical field of explosion-proof. The device comprises a fixing assembly, an explosion piece and a sensing assembly. The fixing assembly comprises a holder and a fixing flange. The holder is provided with a pressure relief channel and a wire harness channel. The fixing flange is used for fixing the holder. The explosion piece is installed on the holder and blocks the pressure relief channel. The sensing assembly comprises a sensing piece and a signal line. The sensing piece is electrically connected with the signal line. The sensing piece is installed between the holder and the fixing piece, on the pressure relief side of the explosion piece, and at least partially located in the pressure relief channel. The signal line is arranged in the wire harness channel. The embodiment of the present application provides exclusive wiring space for the signal line through the wire harness channel, so that the signal line can be arranged in order. Since the signal line is arranged in the wire harness channel, the gap between the holder and the fixing flange caused by the thickness of the signal line is avoided, and the sealing performance of the explosion-proof pressure relief device is improved.

Description

Technical Field

[0001] This application relates to the field of explosion-proof technology, and in particular to an explosion-proof pressure relief device. Background Technology

[0002] In the chemical industry, explosion-proof pressure relief devices are the core safety pressure relief equipment for pressure vessels. An explosion-proof pressure relief device consists of a rupture disc and a clamp; the rupture disc is installed on the pipeline via the clamp. When the pipeline system of the pressure vessel is overpressurized, the rupture disc ruptures instantaneously under a predetermined pressure differential, and the rupture information is sent to the control system via a signal device.

[0003] In related technologies, the signal device is mounted on the clamp and located on the pressure relief side of the rupture disc. It transmits the switching signal to the centralized control system via a signal line. However, because the signal line itself has a certain thickness, gaps are created in the clamp during the process of leading the signal line out of the clamp. This makes the medium in the pipeline prone to leakage when the rupture disc ruptures. Utility Model Content

[0004] This application provides an explosion-proof pressure relief device that improves the sealing performance of the explosion-proof pressure relief device.

[0005] This application provides an explosion-proof pressure relief device, comprising:

[0006] A fixing assembly includes a clamp and a fixing flange, the clamp having a pressure relief channel and a wire harness channel, and the fixing flange being used to fix the clamp.

[0007] An explosive component is installed on the clamp and blocks the pressure relief channel;

[0008] A sensing assembly includes a sensing element and a signal line. The sensing element is electrically connected to the signal line. The sensing element is installed between the clamp and the fixed flange. The sensing element is located on the pressure relief side of the bursting element, and at least part of the sensing element is located in the pressure relief channel. The signal line is disposed in the wiring harness channel.

[0009] In one optional embodiment, the explosion-proof pressure relief device further includes a sealing assembly, the sealing assembly comprising:

[0010] A sealing groove is provided at one end of the wiring harness channel near the sensing element;

[0011] A first sealing element is disposed within the sealing groove, and the first sealing element covers the connection between the sensing element and the signal line.

[0012] In an alternative embodiment, the sealing assembly further includes a second seal that is sealingly connected between the first seal and the sealing groove.

[0013] In one alternative embodiment, the gripper includes:

[0014] The first clamping component has a first channel;

[0015] The second clamping member is disposed opposite to the first clamping member. The second clamping member has a second channel, and the first channel and the second channel are connected to form the pressure relief channel. The explosive element is disposed between the first clamping member and the second clamping member, and the sensing element is disposed on the side of the second clamping member away from the first clamping member.

[0016] In one alternative embodiment, the clamp further includes a conduit with a first cavity inside;

[0017] The wire conduit is disposed on the periphery of the second clamping member, the second clamping member is provided with a second cavity, one end of the second cavity is disposed on the end face of the second clamping member away from the first clamping member, and is connected to the first cavity;

[0018] The first cavity and the second cavity form the wire harness channel.

[0019] In one optional embodiment, the explosion-proof pressure relief device further includes a wiring assembly, the wiring assembly comprising:

[0020] A junction box, used for laying cables;

[0021] A connecting pipe, one end of which is connected to the junction box and the other end of which is detachably connected to the wire conduit; the connecting pipe has a cable channel inside, and the cable channel is connected to the wire harness channel.

[0022] In one optional embodiment, one of the connecting pipe near the end of the conductor pipe and the other of the conductor pipe near the connecting pipe are provided with internal threads, and the other is provided with external threads, wherein the internal threads and the external threads are threadedly engaged.

[0023] In an optional embodiment, the wiring assembly further includes a third seal disposed between the conductor conduit and the connecting conduit to provide a sealed connection between the conductor conduit and the connecting conduit.

[0024] In one alternative embodiment, the fixed flange includes:

[0025] A first flange and a second flange are provided, with the first flange and the second flange being spaced apart, and the second clamping member and the first clamping member are both provided between the first flange and the second flange;

[0026] A connector is used to connect the first flange and the second flange.

[0027] In one alternative embodiment, the sensing component further includes a crimping member disposed between the fixed flange and the second clamping member, and the crimping member is crimped onto the sensing element.

[0028] The explosion-proof pressure relief device provided in this application includes a fixing component, a bursting component, and a sensing component. The fixing component includes a clamp and a fixing flange. The clamp has a pressure relief channel and a wiring harness channel, and the fixing flange is used to fix the clamp. The wiring harness channel provides dedicated space for the signal line, allowing for orderly arrangement of the signal line. Because the signal line is located within the wiring harness channel, gaps between the clamp and the fixing flange due to the thickness of the signal line are avoided, improving the sealing performance of the explosion-proof pressure relief device and reducing media leakage in the pipeline. Furthermore, compared to related technologies where the original signal line exit section lacks protective fixing facilities, in this embodiment, the signal line is routed within a fixed and safe channel, eliminating the need for additional complex clamps or supports to fix the signal line. This simplifies the construction process, reduces construction difficulty, and lowers the risk of accidents caused by signal line issues. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 This is a schematic diagram of the explosion-proof pressure relief device provided in the embodiments of this application;

[0031] Figure 2 This is a partial structural schematic diagram of the explosion-proof pressure relief device provided in the embodiments of this application;

[0032] Figure 3 This is a schematic diagram illustrating the installation of the sensing component and the second clamping member provided in an embodiment of this application.

[0033] Figure 4 A side view of the sensing component of the explosion-proof pressure relief device provided in an embodiment of this application;

[0034] Figure 5 A bottom view of the sensing component of the explosion-proof pressure relief device provided in the embodiments of this application;

[0035] Figure 6 This is a schematic diagram showing the connection between the wiring assembly and the conduit provided in an embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the structure of the conduit near the connecting pipe provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100-Fixing assembly; 101-Pressure relief channel; 102-Wire harness channel; 110-Clamp; 111-First clamp; 112-Second clamp; 113-Wire conduit; 120-Fixing flange; 121-First flange; 122-Second flange; 123-Connector;

[0039] 200 - Explosive components;

[0040] 300 - Sensing component; 310 - Sensing element; 320 - Signal line; 330 - Crimp;

[0041] 400 - Sealing assembly; 410 - Sealing groove; 420 - First seal; 430 - Second seal;

[0042] 500 - Wiring assembly; 510 - Junction box; 520 - Connecting pipe; 530 - Third seal.

[0043] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0045] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0046] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0047] The following explains the relevant technical terms.

[0048] A rupture disc device consists of a rupture disc and a holder. When the pressure difference across the rupture disc reaches a predetermined value, the disc immediately detaches or ruptures, releasing the pressure. A rupture disc, also known as a burst disc or explosion-proof membrane, is installed on the system piping. The rupture disc relieves pressure in the pipeline by breaking or rupturing, forcing the containers in the system piping to stop operating. The holder is a device used to hold the rupture disc, including an upper holder and a lower holder. The holder can be fixed in place by clamping the pipe flange. The rupture disc is positioned between the upper and lower holders.

[0049] With increasingly stringent safety requirements in chemical processes, not only is it necessary to install rupture discs for pressure relief upon breakage, but also to immediately interlock related valves and pumps after pressure relief. This necessitates sending the rupture disc's status signal directly to the monitoring system in the form of a switch signal to trigger safety interlock actions. A signal transmitter is a sensing device installed between the upper clamp and the pipe flange, specifically on the back pressure side (pressure relief side) of the rupture disc. After the rupture disc breaks, the signal transmitter transmits the rupture signal to the control system.

[0050] In related technologies, the signal transmitter is installed on the pressure relief side of the rupture disc, transmitting the switching signal to the centralized control system via an exposed signal wire. At the point where the signal wire exits from the upper clamp and the pipe flange, the thickness of the signal wire creates a gap between the upper clamp and the pipe flange. In the event of rupture disc rupture, this gap can easily lead to leakage within the pipe, adversely affecting the surrounding environment and equipment; furthermore, the aforementioned gap also affects the signal transmitter's sensing sensitivity.

[0051] Meanwhile, the signal device is crimped between the upper clamp and the pipe flange, and the outgoing part of the signal cable connected to the signal device lacks protective fixing facilities. During on-site construction, additional clamps or supports must be installed in vibrating environments, making on-site wiring construction quite difficult. Furthermore, because the portion of the signal cable leading out of the signal device lacks effective protection, especially since the rupture disc is located in the explosion hazard area of ​​the chemical plant, the exposed signal cable is susceptible to accidents caused by electric arcs or mechanical impacts.

[0052] The explosion-proof pressure relief device provided in this application is intended to solve the above-mentioned technical problems.

[0053] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0054] Please see Figures 1 to 3 This application provides a pressure relief device, including a fixing component 100, a bursting component 200, and a sensing component 300.

[0055] The fixing assembly 100 includes a clamp 110 and a fixing flange 120. The clamp 110 is provided with a pressure relief channel 101 and a wire harness channel 102. The fixing flange 120 is used to fix the clamp 110.

[0056] The rupture component 200 is installed on the clamp 110 and blocks the pressure relief channel 101.

[0057] The sensing component 300 includes a sensing element 310 and a signal line 320. The sensing element 310 is electrically connected to the signal line 320. The sensing element 310 is installed between the clamp 110 and the fixed flange 120. The sensing element 310 is on the pressure relief side of the bursting element 200, and the sensing element 310 is at least partially located in the pressure relief channel 101. The signal line 320 is located in the wire harness channel 102.

[0058] The fixing component 100 serves a supporting and fixing function, providing a channel for medium pressure relief and an installation channel for the signal line 320. The fixing component 100 includes a clamp 110 and a fixing flange 120. The clamp 110 has a pressure relief channel 101 and a wiring harness channel 102. The pressure relief channel 101 is the path for the medium to exit after the bursting element 200 ruptures, preventing pressure from failing to be released in time due to obstruction, thus affecting the pressure relief effect. The wiring harness channel 102 provides dedicated space for the signal line 320, allowing the signal line 320 to be arranged in an orderly manner. Because the signal line 320 is located within the wiring harness channel 102, gaps between the clamp 110 and the fixing flange 120 due to the thickness of the signal line 320 are avoided, thereby preventing medium leakage from the pipeline and reducing adverse effects on the surrounding environment and equipment.

[0059] The fixed flange 120 is used to fix the clamp 110 so that the clamp 110 can clamp the explosive 200 and fix the sensor 310, ensuring that the explosive 200 and the sensor 310 will not loosen or shift during operation, thus providing a basic guarantee for the reliable operation of the device.

[0060] The rupture element 200 ruptures and releases pressure when the pressure reaches a predetermined value. The rupture element 200 is installed within the clamp 110 and seals the pressure relief passage 101. During normal operation of the system pipeline, the rupture element 200 withstands pressure from both sides, maintaining the system pipeline's seal and preventing media leakage. When the pressure difference within the system pipeline reaches a predetermined value, the rupture element 200 ruptures rapidly, unblocking the pressure relief passage 101. The high-pressure medium within the system can then be quickly discharged through the pressure relief passage 101, achieving the pressure relief function and protecting the system pipeline and containers from high-pressure damage. This effectively solves the safety problems that may be caused by system overpressure. For example, the rupture element 200 can be a rupture disc, an explosion-proof disc, or an explosion-proof membrane.

[0061] The sensing component 300 is used to sense the status of the explosive component 200 and transmit signals. Please refer to [link / reference needed]. Figures 3 to 5 The sensing component 300 includes a sensing element 310 and a signal line 320. The sensing element 310 is installed between the clamp 110 and the fixed flange 120, and is located on the pressure relief side of the bursting element 200, with at least a portion located in the pressure relief channel 101. The sensing element 310 can promptly detect signals such as pressure changes and medium flow at the moment the bursting element 200 ruptures. The sensing element 310 is electrically connected to the signal line 320, which is located within a wiring harness channel 102. The wiring harness channel 102 protects the signal line 320 from damage due to external environmental factors and also prevents the exposed signal line 320 from causing an electric arc. Specifically, the sensing element 310 has positive and negative terminals, and there are two signal lines 320, each connected to the positive and negative terminals respectively, thus forming a circuit. The positive and negative terminals of the signal line 320 and the sensing element 310 can be connected by welding.

[0062] For example, the sensing component 300 is a thin-film signal device, a piezoelectric signal device, or the like.

[0063] Please continue reading. Figure 5 The diaphragm-type signal device uses a diaphragm with mechanical strength and flexibility as the sensing element 310, which is located on the pressure relief side of the rupture disc. During normal system operation, the diaphragm remains flat, its internal conductive lines are intact, and it is connected to the signal. When the rupture disc ruptures, the high-pressure medium impacts the diaphragm instantaneously, causing it to rupture or tear under the pressure. This rupture breaks the internal conductive lines, altering the circuit's on / off state and generating a switching signal. This signal is transmitted to the control system via the signal line 320 connected to the diaphragm, providing feedback on the rupture disc's rupture state.

[0064] Piezoelectric signalers operate based on the piezoelectric effect of piezoelectric materials. When the piezoelectric material inside the signaler is subjected to external force, an electric charge is generated on its surface. Piezoelectric materials can be piezoelectric ceramics, quartz, etc. When the rupture disc breaks, the high-pressure medium impacts the signaler, and the piezoelectric material, subjected to the impact force, accumulates charge on its surface. Through electrodes connected to both ends of the piezoelectric material, the charge is extracted and converted into a voltage signal. After amplification and filtering by the signal conditioning circuit, the signal is transmitted to the control system via signal line 320.

[0065] Compared to the exposed signal line 320 used in related technologies, in this embodiment, the signal line 320 is routed within the wiring harness channel 102 of the clamp 110. This avoids gaps between the clamp 110 and the fixed flange 120 caused by the thickness of the signal line 320, improving the sealing performance of the explosion-proof pressure relief device and preventing leakage of the medium in the pipeline. Furthermore, unlike related technologies where the original signal line 320 outlet lacks protective fixing facilities, in this embodiment, the signal line 320 is routed within a fixed and safe channel, eliminating the need for additional complex clamps or supports to secure it. This simplifies the construction process, reduces construction difficulty, and lowers the risk of accidents caused by problems with the signal line 320.

[0066] In an optional embodiment, to further improve the sealing performance of the explosion-proof pressure relief device, please refer to [link to relevant documentation]. Figure 3 The explosion-proof pressure relief device also includes a sealing assembly 400, which includes a sealing groove 410 and a first sealing element 420.

[0067] A sealing groove 410 is located at one end of the wire harness channel 102 near the sensing element 310; a first sealing element 420 is located inside the sealing groove 410 and covers the connection between the sensing element 310 and the signal line 320.

[0068] It is understood that the connection between the sensor 310 and the signal line 320 is located within the sealing groove 410 and is sealed to the sealing groove 410 through the first sealing member 420. The first sealing member 420 covers the connection between the sensor 310 and the signal line 320 and is disposed within the sealing groove 410. It can fit tightly against the inner wall of the sealing groove 410 through its own elastic deformation, thereby keeping the sensor 310 and the wire harness channel 102 in a sealed state.

[0069] The connection between the sensor 310 and the signal line 320 is completely enclosed in the sealing groove 410. The first sealing element 420 can fill the space of the sealing groove 410. On the one hand, it ensures the connection stability and sealing between the sensor 310 and the signal line 320, isolates external corrosive media, water vapor and other intrusions, and prevents oxidation and corrosion of the connection point from affecting signal transmission. On the other hand, when the pipeline is depressurized, it prevents the medium inside the pipeline from entering the wire harness channel 102 and causing damage to the signal line 320 and the cable connected to it.

[0070] For example, the first seal 420 is made of materials such as epoxy resin, thermosetting silicone, or hot melt adhesive. The following description uses hot melt adhesive as an example. Before heating, thermosetting silicone is in a liquid or paste state, possessing good fluidity and wettability. It can easily penetrate into the tiny gaps between the solder joints of the sensing element 310 and the signal line 320, achieving all-around encapsulation and ensuring complete isolation of the solder joints from the outside environment. When a certain temperature is applied, the silicone gradually transforms from a liquid to a solid elastomer, forming a solid block structure adapted to the sealing groove 410.

[0071] In an optional embodiment, to further improve the sealing performance of the sealing groove 410, the sealing assembly 400 further includes a second seal 430, which is sealed between the first seal 420 and the sealing groove 410.

[0072] The first seal 420 primarily seals the connection between the sensor 310 and the signal line 320, while the second seal 430 provides a secondary seal against potential gaps at the interface between the first seal 420 and the sealing groove 410. Working together, they effectively block the channels for medium penetration along the sealing interface, preventing external corrosive gases and liquids from seeping into the wiring harness channel 102 and corroding the signal line 320 and connection points. They also prevent leakage of high-pressure media from the device through weak points in the seal, reducing the risk of safety accidents caused by seal failure.

[0073] In addition, the elastic deformation characteristics of the second seal 430 can enhance the vibration resistance of the sealing structure, maintain the sealing pressure continuously under the mechanical vibration environment generated by the long-term operation of the device, and ensure that the connection part of the sensing component 300 is always under reliable sealing protection, significantly improving the sealing performance and stability of the explosion-proof pressure relief device under complex working conditions.

[0074] For example, the second seal 430 may be made of a highly elastic and corrosion-resistant material, such as fluororubber or silicone rubber, and its shape is adapted to the inner wall contour of the sealing groove 410. After installation, it can tightly fill the tiny gap between the first seal 420 and the sealing groove 410.

[0075] In one alternative embodiment, the clamp 110 includes a first clamp 111 and a second clamp 112.

[0076] The first clamping member 111 is provided with a first channel; the second clamping member 112 is disposed opposite to the first clamping member 111, and the second clamping member 112 is provided with a second channel. The first channel and the second channel are connected to form a pressure relief channel 101. The explosive element 200 is disposed between the first clamping member 111 and the second clamping member 112, and the sensing element 310 is disposed on the side of the second clamping member 112 away from the first clamping member 111.

[0077] When the first clamping member 111 and the second clamping member 112 are assembled, the first channel and the second channel are interconnected, forming a pressure relief channel 101. This pressure relief channel 101 not only ensures the smooth discharge of the medium after the ruptured component 200 ruptures, but also provides a stable path for the entire pressure relief process. The ruptured component 200 is installed between the first clamping member 111 and the second clamping member 112. During normal system operation, the ruptured component 200 closes the pressure relief channel 101, maintaining stable system pressure. When the system pressure exceeds the predetermined pressure value of the ruptured component 200, the ruptured component 200 ruptures rapidly, allowing the pressure relief channel 101 to open unobstructed and the high-pressure medium in the system to be released quickly.

[0078] The sensing element 310 can promptly detect signals such as pressure changes and medium flow at the moment the rupture component 200 breaks. The sensing element 310 is located on the side of the second clamping member 112 away from the first clamping member 111, on the pressure relief side of the rupture component 200, that is, the sensing element 310 is located between the second clamping member 112 and the fixed flange 120, and the second clamping member 112 is located between the sensing element 310 and the rupture component 200.

[0079] In an optional embodiment, the clamp 110 further includes a wire conduit 113, which has a first cavity. The wire conduit 113 is disposed on the periphery of the second clamping member 112, which has a second cavity. One end of the second cavity is disposed on the end face of the second clamping member 112 away from the first clamping member 111 and is connected to the first cavity. The first cavity and the second cavity form a wire harness channel 102.

[0080] The conduit 113 has a first cavity extending axially along its axis, providing a passageway for the signal line 320. The conduit 113 is located around the second clamp 112, and the two fit together tightly. Simultaneously, the second clamp 112 has a second cavity, one end of which is located on the end face of the second clamp 112 away from the first clamp 111. This end connects to and intersects with the first cavity of the conduit 113, allowing the first and second cavities to communicate with each other and together form a complete wire harness channel 102.

[0081] After the sensing element 310 is electrically connected to the signal line 320, the signal line 320 can enter along the second cavity, and then smoothly extend into the first cavity of the wire conduit 113 through the connection between the second cavity and the first cavity, thus achieving an orderly arrangement of the signal line 320 in the structure of the clamp 110. This design of the wire harness channel 102 completely encloses the signal line 320 internally, avoiding the signal line 320 from being exposed, effectively preventing damage to the signal line 320 from external mechanical impacts and corrosive media, and ensuring the stability and reliability of signal transmission.

[0082] The mating structure of the conduit 113 and the second clamp 112 facilitates the installation and fixing of the signal line 320 during on-site construction, reduces the use of additional support components or clamps, lowers the construction difficulty and cost, and also provides convenience for the later maintenance of the sensing component 300 and the signal line 320.

[0083] For example, the conduit 113 and the second clamp 112 are integrally formed, or the two are detachably connected.

[0084] In related technologies, the sensing component 300 and the second clamp 110 are made into an integrated unit, which is convenient for on-site wiring. However, when the rupture disc breaks, the second clamp 110 and the sensing component 300 need to be replaced as a whole, which leads to a significant increase in factory maintenance costs and waste of resources.

[0085] To address this issue, in one alternative embodiment, the explosion-proof pressure relief device further includes a wiring assembly 500, see [link to relevant documentation]. Figure 6 and Figure 7 The wiring assembly 500 includes a junction box 510 and a connecting pipe 520. The junction box 510 is used for laying cables. One end of the connecting pipe 520 is connected to the junction box 510, and the other end is detachably connected to the wire conduit 113. The connecting pipe 520 has a cable channel inside, which is connected to the wire harness channel 102.

[0086] The wiring assembly 500 includes a junction box 510 and a connecting tube 520. The junction box 510 is mainly used for laying cables, providing a neat storage and connection space for the cables, facilitating cable management and subsequent maintenance. One end of the connecting tube 520 is securely connected to the junction box 510, and the other end is detachably connected to the conduit 113. This connection method ensures both the reliability of the connection and facilitates quick disassembly during maintenance. The connecting tube 520 has a cable channel, which is precisely connected to the wire harness channel 102 formed by the conduit 113 and the second clamp 112, thereby constructing a complete and continuous cable routing path.

[0087] For ease of explanation, the following description uses a diaphragm-type signal device as an example. In actual use, when the metal diaphragm of the signal device breaks, i.e., when the sensing component 300 malfunctions, the operator does not need to replace the entire second clamp 110. Simply loosen the connection between the connecting pipe 520 and the wire pipe 113, open the clamp 110, and then pull out the first seal 420 covering the connection between the sensing element 310 and the signal line 320, along with the signal line 320, from the sealed cavity. This allows for easy removal of the faulty sensing element 310 and signal line 320. Afterward, the new sensing component 300 is installed through this channel, the signal line 320 is reconnected, the new sensing component 300 is secured in place, and then the sealing component 400 and connecting pipe 520 are restored, completing the maintenance work. This allows the sensing component 300 to be replaced independently without replacing the second clamp 110 or other components, significantly reducing material consumption and labor costs during maintenance, and significantly improving the economic efficiency and practicality of maintaining the explosion-proof pressure relief device. Meanwhile, the interconnected design of the cable channel and the wire harness channel 102 ensures the integrity and stability of the signal transmission path after the new sensing component 300 is installed, guaranteeing that the device can continue to operate safely and reliably.

[0088] In one alternative embodiment, one end of the connecting pipe 520 near the wire pipe 113 and the other end of the wire pipe 113 near the connecting pipe 520 are provided with internal threads, and the other end is provided with external threads, with the internal threads and external threads engaging.

[0089] The internal and external threads mate. The threaded connection, through the precise fit of the mechanical structure, ensures a stable connection between the wiring assembly 500 and the clamp 110, and facilitates operation.

[0090] Specifically, during the manufacturing process, depending on actual design requirements, one can flexibly choose to machine an internal thread at the end of the connecting pipe 520 near the conduit 113, while simultaneously providing an external thread at the corresponding end of the conduit 113; or conversely, to provide an external thread at the end of the connecting pipe 520 and an internal thread at the end of the conduit 113. Both configurations achieve a tight threaded fit. During installation, the operator simply aligns the end with the external thread with the end with the internal thread and rotates clockwise to gradually screw them together.

[0091] Furthermore, in an optional embodiment, the wiring assembly 500 further includes a third seal 530, which is disposed between the wire conduit 113 and the connecting pipe 520 to seal the connection between the wire conduit 113 and the connecting pipe 520.

[0092] The third seal 530 further enhances the sealing performance of the connection, preventing external media intrusion or internal media leakage. In specific implementations, the third seal 530 can be a ring seal installed within the sealing groove 410 of the conduit 113 or connecting pipe 520. When the threads are tightened, the seal ring undergoes axial compression, producing elastic deformation that fills the thread gaps and microscopic unevenness of the contact surface, forming a reliable sealing barrier. The material of the third seal 530 can be selected according to the operating environment, such as fluororubber or silicone rubber, to meet different working conditions.

[0093] In some embodiments of this application, grooves are evenly distributed on the threaded protrusion of the external thread to form a wire clamping claw. An elastic sealing gasket is preset inside the wire clamping claw. When the signal line 320 just passes through the central hole of the elastic sealing gasket, the threaded connecting wire tube 113 and the connecting tube 520 are tightened in the direction of the thread. The wire clamping claw shrinks and tightens the elastic sealing gasket to form a second-level seal.

[0094] In one optional embodiment, the fixed flange 120 includes a first flange 121, a connector 123, and a second flange 122. The first flange 121 and the second flange 122 are spaced apart. The second clamping member 112 and the first clamping member 111 are both disposed between the first flange 121 and the second flange 122. The connector 123 is connected to the first flange 121 and the second flange 122.

[0095] The first flange 121 and the second flange 122 are spaced apart, forming a receiving space between them. The second clamping member 112 and the first clamping member 111 are both located within the receiving space between the first flange 121 and the second flange 122, thereby precisely positioning the clamp 110 within the defined area of ​​the fixed flange 120. After assembly, the first clamping member 111 and the second clamping member 112 form a complete clamping functional structure for fixing the explosive component 200, while the first flange 121 and the second flange 122 constrain and fix the clamp 110 from both sides, ensuring that the clamp 110 will not shift or loosen during device operation.

[0096] Connector 123 connects to the first flange 121 and the second flange 122, and its function is to firmly connect the first flange 121 and the second flange 122 into a whole, thereby achieving clamping and fixing of the clamp 110. Connector 123 can be a bolt, screw, or other fastener. By providing corresponding connecting holes on the first flange 121 and the second flange 122, connector 123 is passed through the connecting holes in sequence and tightened with nuts, so that the first flange 121 and the second flange 122 move closer to each other and press the clamp 110. During installation, by adjusting the tightness of connector 123, the clamping force on the clamp 110 can be controlled, ensuring that the clamp 110 is firmly fixed while avoiding damage to the clamp 110 or internal components such as the explosive element 200 and the sensing element 310 due to excessive clamping force.

[0097] For example, the sensing element 310 is disposed on the pressure relief side of the rupture element 200 and is located between the second flange 122 and the second clamping element 112.

[0098] In one alternative embodiment, please refer to Figure 4 and Figure 5 The sensing component 300 also includes a crimping member 330, which is disposed between the fixed flange 120 and the second clamping member 112, and the crimping member 330 is crimped to the sensing member 310.

[0099] The crimping member 330 can be a ring-shaped metal component, with its outer diameter matching the inner diameter of the second flange 122 and its inner diameter being greater than or equal to the diameter of the second channel to ensure that the flow of the pressure relief channel 101 is not obstructed. One side of the crimping member 330 contacts the sensing element 310, and the other side is fitted against the inner wall of the second flange 122. The axial pressure generated by the connecting member 123 achieves stable fixation of the sensing element 310.

[0100] When connector 123 is tightened, the first flange 121 and the second flange 122 approach each other. The crimping member 330, acting as an intermediate transmission structure, evenly distributes the clamping force to the pressure-bearing surface of the sensor 310. At the moment of rupture of the rupture disc, the impact of the high-pressure medium may cause the sensor 310 to loosen or shift. The crimping member 330, through pre-tightening force, ensures a tight fit between the sensor 310 and the second clamping member 112, preventing positional displacement due to mechanical vibration or medium impact and ensuring the accuracy of signal detection. The stable support of the crimping member 330 for the sensor 310 reduces the risk of wire breakage due to external pulling at the connection point.

[0101] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0102] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An explosion-proof pressure relief device, characterized in that, include: The fixing assembly (100) includes a clamp (110) and a fixing flange (120), the clamp (110) having a pressure relief channel (101) and a wire harness channel (102), and the fixing flange (120) being used to fix the clamp (110); A rupture element (200) is installed on the clamp (110) and blocks the pressure relief channel (101); The sensing component (300) includes a sensing element (310) and a signal line (320), wherein the sensing element (310) is electrically connected to the signal line (320), the sensing element (310) is installed between the clamp (110) and the fixed flange (120), the sensing element (310) is on the pressure relief side of the bursting element (200), and the sensing element (310) is at least partially located in the pressure relief channel (101), and the signal line (320) is disposed in the wiring harness channel (102).

2. The explosion-proof pressure relief device according to claim 1, characterized in that, It also includes a sealing assembly (400), the sealing assembly (400) comprising: A sealing groove (410) is provided at one end of the wire harness channel (102) near the sensing element (310); A first sealing element (420) is disposed in the sealing groove (410), and the first sealing element (420) covers the connection between the sensing element (310) and the signal line (320).

3. The explosion-proof pressure relief device according to claim 2, characterized in that, The sealing assembly (400) further includes a second seal (430), which is sealingly connected between the first seal (420) and the sealing groove (410).

4. The explosion-proof pressure relief device according to any one of claims 1 to 3, characterized in that, The clamp (110) includes: The first clamping member (111) has a first channel; The second clamping member (112) is disposed opposite to the first clamping member (111). The second clamping member (112) is provided with a second channel. The first channel and the second channel are connected to form the pressure relief channel (101). The explosive element (200) is disposed between the first clamping member (111) and the second clamping member (112). The sensing element (310) is disposed on the side of the second clamping member (112) away from the first clamping member (111).

5. The explosion-proof pressure relief device according to claim 4, characterized in that, The clamp (110) also includes a wire tube (113), which has a first cavity inside; The wire tube (113) is disposed on the periphery of the second clamping member (112). The second clamping member (112) is provided with a second cavity. One end of the second cavity is disposed on the end face of the second clamping member (112) away from the first clamping member (111) and is connected to the first cavity. The first cavity and the second cavity form the wire harness channel (102).

6. The explosion-proof pressure relief device according to claim 5, characterized in that, It also includes a wiring assembly (500), the wiring assembly (500) comprising: Junction box (510), said junction box (510) is used for laying cables; A connecting pipe (520) is provided, one end of which is connected to the junction box (510) and the other end is detachably connected to the wire conduit (113); a cable channel is provided inside the connecting pipe (520) and the cable channel is connected to the wire harness channel (102).

7. The explosion-proof pressure relief device according to claim 6, characterized in that, The connecting pipe (520) near the end of the conductor pipe (113) and the conductor pipe (113) near the end of the connecting pipe (520) are respectively provided with an internal thread and an external thread, and the internal thread and the external thread are threadedly engaged.

8. The explosion-proof pressure relief device according to claim 7, characterized in that, The wiring assembly (500) further includes a third seal (530) disposed between the wire conduit (113) and the connecting pipe (520) to provide a sealed connection between the wire conduit (113) and the connecting pipe (520).

9. The explosion-proof pressure relief device according to claim 4, characterized in that, The fixed flange (120) includes: A first flange (121) and a second flange (122) are provided at a distance from each other. The second clamping member (112) and the first clamping member (111) are both provided between the first flange (121) and the second flange (122). A connector (123) is connected to the first flange (121) and the second flange (122).

10. The explosion-proof pressure relief device according to claim 9, characterized in that, The sensing component (300) further includes a crimping member (330), which is disposed between the fixed flange (120) and the second clamping member (112), and the crimping member (330) is crimped onto the sensing element (310).

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