Safety protection system and method for acetylene gas cabinet

Abstract

The application discloses a safety protection system for an acetylene gas cabinet, comprising: a burst state collector, which is hung on a protected acetylene conveying pipeline, and is used for collecting the burst state of the acetylene conveying pipeline in real time; a control module, which is used for detecting whether an acetylene pipeline overpressure event occurs at present according to the burst state, starting an interlock protection mechanism when the event occurs, and generating an emergency water injection instruction; and an emergency treatment module, which is arranged on the acetylene conveying pipeline, and is used for starting under the control of the emergency water injection instruction to perform water injection and pressure reduction treatment on the acetylene conveying pipeline which is currently overpressure. The application can timely and effectively monitor when an acetylene pipeline burst disc bursts, and effectively cut off the flame transmission to the acetylene gas cabinet through emergency treatment measures.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety relief of chemical equipment, in particular to a safety protection system and method for an acetylene gas cabinet. BACKGROUND

[0002] An acetylene gas cabinet is used to store acetylene gas and is generally provided in an acetylene device. Acetylene can decompose and explode under oxygen-free conditions, so the acetylene gas cabinet has extremely high combustion and explosion risk. When a combustion and explosion occurs in an acetylene pipeline, the flame is transmitted to the acetylene gas cabinet, which can cause the acetylene gas in the acetylene gas cabinet to explode. Generally, an explosion disc is installed in the acetylene pipeline, which can effectively prevent overpressure of the pipeline caused by acetylene explosion, but this way still allows the combustion and explosion flame to continue to be transmitted along the acetylene conveying pipeline to the acetylene gas cabinet, thereby seriously affecting the safety of the acetylene gas cabinet.

[0003] The existing emergency disposal method for the rupture of the explosion disc mainly aims at the manufacturing and selection of the explosion disc, the health state monitoring of the explosion disc, and the explosion alarm sensor, and the like, and there is no explosion alarm device for the acetylene gas cabinet and the emergency disposal method after the alarm.

[0004] Therefore, the prior art needs to provide a safety protection scheme for the acetylene gas cabinet to solve one or more of the above technical problems, and therefore, technical measures are needed to prevent the flame from being transmitted to the acetylene gas cabinet when the explosion occurs. SUMMARY

[0005] To solve the above technical problems, the present application provides a safety protection system for an acetylene gas cabinet, comprising: an explosion state collector, which is hung on a protected acetylene conveying pipeline, for collecting the explosion state of the acetylene conveying pipeline in real time; a control module, which is used to detect whether an acetylene pipeline overpressure event occurs according to the explosion state, to start an interlock protection mechanism when the event occurs, and to generate an emergency water injection instruction; and an emergency disposal module, which is arranged on the acetylene conveying pipeline, for starting to inject water into the acetylene conveying pipeline under the control of the emergency water injection instruction to reduce the pressure.

[0006] Preferably, the explosion state collector comprises an explosion alarm sensor, which is used to be powered off when the explosion disc used to monitor the pipeline overpressure event is ruptured, wherein the control module is further used to determine the starting time of the interlock protection mechanism according to the output voltage of the explosion alarm sensor, and wherein the alarm instruction instruction and the emergency water injection instruction are generated when it is detected that the explosion alarm sensor is powered off.

[0007] Preferably, the burst status collector comprises a pressure sensor, and the control module is further configured to determine the timing of the interlock protection mechanism according to the burst disc back pressure, wherein an alarm indication instruction is generated when the burst disc back pressure is detected to be greater than a preset first pressure threshold, and the emergency water injection instruction is generated when the burst disc back pressure is detected to be greater than a preset second pressure threshold, the first pressure threshold being less than the second pressure threshold.

[0008] Preferably, the burst status collector comprises a pressure sensor and a burst alarm sensor configured to be de-energized when the burst disc bursts to monitor the overpressure event of the pipeline, and the control module is further configured to determine the timing of the interlock protection mechanism according to the output voltage of the burst disc and the burst disc back pressure, wherein an alarm indication instruction is generated when the burst alarm sensor is detected to be de-energized or the burst disc back pressure is detected to be greater than a preset first pressure threshold, and the emergency water injection instruction is generated when the burst alarm sensor is detected to be de-energized and the burst disc back pressure is detected to be greater than a preset second pressure threshold.

[0009] Preferably, the safety protection system further comprises a flame barrier module arranged on the acetylene delivery pipeline at the front end of the emergency treatment module, configured to prevent the flame caused by the overpressure event from spreading to the acetylene gas cabinet at the end of the acetylene delivery pipeline.

[0010] Preferably, the flame barrier module is selected from one of a flame arrester or a water seal tank.

[0011] Preferably, the emergency treatment module comprises a water storage tank configured to store the amount of fluid required for water injection pressure relief treatment, and a shut-off valve connected to the control module and arranged on the outlet line of the water storage tank, configured to be opened under the control of the emergency water injection instruction, wherein a first end of the shut-off valve is in communication with the outlet of the water storage tank, and a second end of the shut-off valve is in communication with the acetylene delivery pipeline.

[0012] Preferably, the control module is implemented by a distributed control system or a programmable logic controller.

[0013] In another aspect, a safety protection method for an acetylene gas cabinet is provided, which is implemented by the safety protection system as described above, wherein the safety protection method comprises the following steps: collecting the burst state of the acetylene conveying pipeline in real time by using the burst state collector hung on the protected acetylene conveying pipeline; detecting whether an acetylene pipeline overpressure event occurs at present according to the burst state, starting an interlock protection mechanism when an overpressure event occurs, and generating an emergency water injection instruction; under the control of the emergency water injection instruction, the emergency treatment module arranged on the acetylene conveying pipeline is started to perform water injection pressure reduction treatment on the acetylene conveying pipeline currently in overpressure.

[0014] Preferably, the safety protection method further comprises: arranging a flame blocking module on the acetylene conveying pipeline at the front end of the emergency treatment module, so as to prevent the flame caused by the overpressure event from spreading to the acetylene gas cabinet at the end of the acetylene conveying pipeline by using the flame blocking module.

[0015] Compared with the prior art, one or more embodiments of the above scheme can have the following advantages or beneficial effects:

[0016] The present application provides a safety protection system and method for an acetylene gas cabinet. The system and method ensure the reliability of the burst disc burst state monitoring result by configuring a combined sensor device, and inject water in the water injection tank into the acetylene conveying pipeline by using the emergency water injection device and starting the emergency shut-off valve by the burst disc burst monitored by the relief monitoring device (combined sensor component), and arranging a blocking module in the acetylene conveying pipeline, so as to effectively block the flame from transmitting to the acetylene gas cabinet by the emergency treatment measure when the acetylene pipeline burns and explodes, thereby ensuring the safety of the acetylene gas cabinet under the burst state.

[0017] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and achieved by means of the structures particularly pointed out in the description and the claims. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate embodiments of the present application, and are used to explain the present application together with the description. The drawings do not limit the present application. In the drawings:

[0019] Figure 1 It is a whole structure schematic diagram of the safety protection system for an acetylene gas cabinet of the embodiment of the present application.

[0020] Figure 2 It is a specific structure schematic diagram of the safety protection system for an acetylene gas cabinet of the embodiment of the present application.

[0021] Figure 3 The flow chart of the safety protection method for the acetylene gas cabinet. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and embodiments, so that how the present application applies technical means to solve technical problems and achieves technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, each embodiment in the present application and each feature in each embodiment can be combined with each other, and the technical solutions formed thereby are within the protection scope of the present application.

[0023] In addition, the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Moreover, although the logical order is shown in the flow chart, in some cases, the steps shown or described herein can be executed in an order different from that shown.

[0024] In actual application, overpressure conditions caused by certain reaction events occur in chemical plants from time to time. When overpressure conditions occur, a blowdown event is activated to transport the reaction materials in the container where the reaction event occurs to a blowdown collection tank, thereby ensuring the safety of the entire chemical plant and reducing the impact of the container node where the overpressure condition occurs on other nodes of the chemical plant.

[0025] The acetylene gas cabinet is an indispensable node device in a chemical plant, which is used to store acetylene gas and is generally equipped in an acetylene device (see Figure 2 The acetylene gas is transported from the acetylene gas inlet 1 to the acetylene gas cabinet 11 through the acetylene conveying pipeline 2. Acetylene can decompose and explode under anaerobic conditions, so the acetylene gas cabinet has extremely high combustion and explosion risk. When combustion and explosion occur in the acetylene pipeline (for example, caused by overpressure conditions), the flame is transmitted to the acetylene gas cabinet, which can cause the acetylene gas in the acetylene gas cabinet to explode. In order to prevent the impact of overpressure conditions in a chemical plant on an acetylene gas cabinet, an explosion disc is usually installed in the acetylene pipeline 2, which can effectively prevent overpressure of the pipeline caused by acetylene explosion, but this method still allows the combustion and explosion flame to continue to be transmitted along the acetylene conveying pipeline to the acetylene gas cabinet, thereby seriously affecting the safety of the acetylene gas cabinet.

[0026] The existing emergency disposal method when the rupture disc breaks mainly aims at the manufacture and selection of the rupture disc, the health state monitoring of the rupture disc, and the rupture alarm sensor, and there is no emergency disposal method for the rupture alarm device of the acetylene gas cabinet and after the alarm.

[0027] Therefore, in order to solve one or more of the above technical problems, the present application proposes a safety protection system and method for an acetylene gas cabinet. The system and method include a relief monitoring device, a flame blocking module, an emergency water injection device, and a control module. When the rupture disc on the acetylene pipeline bursts, not only can the system and method timely and effectively monitor, but also can effectively block the flame from transmitting to the acetylene gas cabinet through emergency treatment measures. Thus, the present application ensures the reliability of the monitoring of the bursting state of the acetylene delivery pipeline by combining sensors, effectively and timely blocks the transmission of the flame to the acetylene gas cabinet through emergency water injection combined with flame blocking treatment, and thus ensures the safety of the entire chemical device under the bursting state.

[0028] Example One

[0029] Figure 1 The present application is a schematic diagram of the overall structure of the safety protection system for an acetylene gas cabinet. As shown in Figure 1 , the safety protection system for an acetylene gas cabinet (hereinafter referred to as "safety protection system") described in the present application embodiment at least includes a bursting state collector A, a control module B, and an emergency treatment module C.

[0030] The bursting state collector A is hung on the protected acetylene delivery pipeline 2, and further, the bursting state collector A is hung on the protected acetylene delivery pipeline 2 through the relief pipeline 3. In this way, the bursting state collector A is connected in communication with the acetylene delivery pipeline 2 through the unobstructed relief pipeline 3. The control module B (see component 12 in Figure 2 ) is electrically connected with the bursting state collector A. The emergency treatment module C is arranged in the protected acetylene delivery pipeline 2, between the hanging position of the bursting disc 4 on the acetylene delivery pipeline 2 and the acetylene gas cabinet 11. Specifically, the bursting state collector A is used to collect the bursting state of the acetylene delivery pipeline 2 in real time.

[0031] In addition, the bursting disc 4 is arranged in the relief pipeline 3 at the front end of the bursting state collector A, which is used to monitor the overpressure condition in the current acetylene delivery pipeline 2 and burst when the pipeline overpressure (or pipeline combustion explosion) event occurs, so that the present application uses the bursting disc 4 to determine the timing of the occurrence of the pipeline overpressure (or pipeline combustion explosion) event. In the present application embodiment, the corresponding bursting disc 4 is arranged for the current protected acetylene delivery pipeline 2 to monitor the timing of the occurrence of the overpressure condition of the current pipeline 2.

[0032] The control module B (14) is used to detect whether the acetylene pipeline overpressure event (for example, whether the acetylene pipeline 2 combustion explosion event occurs) occurs at present according to the bursting state monitored in real time from the bursting state collector A, and immediately starts the interlock protection mechanism and generates the emergency water injection instruction when the acetylene pipeline overpressure event occurs.

[0033] Furthermore, in this embodiment of the invention, the control module B (14) is implemented using a distributed control system (DCS) or a programmable logic controller (PLC).

[0034] Furthermore, the emergency response module C is activated under the control of the emergency water injection command sent by the control device B (14) to inject water into the acetylene delivery pipeline 2 corresponding to the current pipeline overpressure event to reduce pressure.

[0035] Figure 2 This is a schematic diagram of the specific structure of the safety protection system for an acetylene gas holder according to an embodiment of this application. See below for reference. Figure 2 The specific structure and function of the emergency response module C described in the embodiments of the present invention will be explained.

[0036] Emergency response module C includes at least: a water storage tank 8 and a shut-off valve 10. For example... Figure 2 As shown, the shut-off valve 10 is electrically connected to the control module 14. The water storage tank 8 is used to fill the amount of depressurizing fluid required for the above-mentioned (emergency) water injection and depressurization treatment.

[0037] A shut-off valve 10 is installed on the outlet line of the water storage tank 8. Furthermore, the first end of the shut-off valve 10 is connected to the outlet of the water storage tank 8, and the second end of the shut-off valve 10 is connected to the interior of the acetylene delivery pipeline 2. The shut-off valve 10 is used to open under the control of the aforementioned emergency water injection command, so as to inject a pressure-reducing fluid into the acetylene delivery pipeline 2 in a timely manner, thereby controlling the pressure reduction of the current pipeline overpressure event. Normally, the emergency shut-off valve 10 is in a normally closed state. In an emergency, the control module 12 controls the opening of the emergency shut-off valve 10 to inject a pressure-reducing fluid (e.g., water) into the acetylene delivery pipeline 2.

[0038] In addition, to further prevent the combustion flame in the delivery pipeline 2 from propagating to the acetylene gas holder 11, the safety protection system described in this embodiment of the invention also includes a flame blocking module 7. The flame blocking module 7 is located at the front end of the attachment position of the emergency response module C on the acetylene delivery pipeline. That is, the flame blocking module 7 is located between the attachment position of the explosion state collector A on the acetylene delivery pipeline 2 and the attachment position of the emergency response module C on the acetylene delivery pipeline 2. The flame blocking module 7 is used to prevent the flame caused by the current pipeline overpressure event from continuing to propagate to the acetylene gas holder 11 located at the end of the acetylene delivery pipeline 2.

[0039] The flame barrier module 7 is selected from one of a flame arrester (for example, a flame arrester cabinet) or a water seal tank. The flame barrier module 7 is installed at the rear end of the connection position of the relief pipeline 2 on the acetylene pipeline. The flame arrester is filled with a metal mesh filter or a corrugated filter to prevent the spread of flame. In addition, the water seal tank is preloaded with a certain water level, and the acetylene pipeline connected to the inlet of the water seal tank extends below the water level, and the outlet pipeline of the water seal tank is above the water level, so that the continuous spread of flame is prevented by the barrier of water in the water seal tank.

[0040] Example Two

[0041] Based on the safety protection system described in the above embodiment one, the present example further describes the specific structure of the above blasting state collector A and the specific rules of the interlocking mechanism corresponding to the specific structure of the blasting state collector A.

[0042] In embodiment two, the blasting state collector A at least includes a blasting alarm sensor 5. The blasting alarm sensor 5 is used to be de-energized when the bursting disc 4 bursts. The bursting disc 4 is used to monitor the starting time of the overpressure event of the current pipeline 2.

[0043] The blasting alarm sensor 5 includes a polymer film and a conductive loop. The blasting alarm sensor 5 is used to be de-energized when the bursting disc 4 bursts (i.e., no output voltage can be formed at the output end of the sensor 5). In addition, the blasting alarm sensor 5 is also used to be in a conduction state before the bursting disc 4 bursts (i.e., a certain amplitude of effective output voltage is formed at the output end of the sensor 5). The blasting alarm sensor 5 is used to monitor the generation of the bursting time of the bursting disc 4 from the occurrence of the reaction event to the bursting and after the bursting, so as to use the generated output voltage change characteristics to represent the real-time blasting state.

[0044] Further, in embodiment two, the control module B (12) is also used to determine the starting time of the interlocking protection mechanism according to the real-time output pressure of the blasting alarm sensor 5. When the control module B (12) detects that the blasting alarm sensor 5 is de-energized (i.e., no output voltage can be formed at the output end of the sensor 5), it immediately generates an alarm indication instruction to perform local alarm by using the alarm indication instruction, and immediately generates an emergency water injection instruction.

[0045] Thus, in the embodiment two, only the voltage outputted by the burst alarm sensor 5 when the burst action occurs is used to determine the starting time of the interlocking protection mechanism. Further, the burst alarm sensor of the present application is a polymer film placed behind the burst disc and is de-energized after the burst disc bursts, thereby indicating the burst disc rupture and activating the interlocking action. In this way, the embodiment of the present application can use the interlocking protection mechanism corresponding to the control module 12 to interlock the starting of the overpressure event of the acetylene pipeline and the starting of the emergency pressure reduction processing mechanism in the event of an overpressure event, thereby effectively and reliably detecting the overpressure of the pipeline in all directions and quickly avoiding the danger of flame transmission to the acetylene gas cabinet.

[0046] Example 1: The burst alarm sensor 5 is installed on the back-end relief line 3 of the burst disc 4, and the flame arrestor is arranged on the acetylene pipeline 2. When the burst alarm sensor 5 detects that the burst disc 4 has burst, the control module 12 opens the emergency shut-off valve 10 to inject water into the acetylene pipeline 2.

[0047] Example 2: The burst alarm sensor 5 is installed on the back-end relief line 3 of the burst disc 4, and the water seal tank is arranged on the acetylene pipeline 2. When the burst alarm sensor 5 detects that the burst disc 4 has burst, the control module 12 opens the emergency shut-off valve 10 to inject water into the acetylene pipeline 2.

[0048] Example Three

[0049] Based on the safety protection system described in the above embodiment one, the present example further describes the specific structure of the burst state collector A and the specific rules of the interlocking mechanism corresponding to the specific structure of the burst state collector A.

[0050] In the embodiment three, the burst state collector A at least includes a pressure sensor (pressure gauge) 6. The pressure sensor (pressure gauge) 6 is used to monitor the real-time pressure change in the back-end relief line of the burst disc 4 from the reaction event in the industrial device to the burst and after the burst, thereby using the dynamic pressure change characteristics to represent the real-time burst state.

[0051] Further, in the embodiment three, the control module B (12) is also used to determine the starting time of the interlocking protection mechanism according to the real-time pressure behind the burst disc. Wherein, the control module B (12) generates an alarm indication instruction to perform local alarm when detecting that the real-time pressure behind the burst disc 4 is greater than a preset first pressure threshold, and then generates an emergency water injection instruction when detecting that the real-time pressure behind the burst disc 4 is greater than a preset second pressure threshold. Wherein, the first pressure threshold is less than the second pressure threshold.

[0052] Thus, in the third embodiment, the starting timing of the current acetylene pipeline overpressure event is determined by comparing the real-time pressure value detected by the pressure sensor 5 with the first pressure threshold value, and whether the current acetylene pipeline overpressure event reaches the deep runaway state is determined by comparing the real-time pressure value detected by the pressure sensor 5 with the second pressure threshold value. Further, the high-sensitivity pressure sensor 5 in the embodiment of the present application can monitor the pressure change after the rupture disc breaks, thereby indicating the rupture of the rupture disc and activating the interlocking action. In this way, the embodiment of the present application can use the interlocking protection mechanism corresponding to the control module 12 to interlock control the starting of the acetylene pipeline overpressure event, the deep runaway state of the acetylene pipeline overpressure event, and the starting of the emergency pressure reduction processing mechanism when the deep runaway state is reached, thereby effectively and reliably detecting the pipeline overpressure in all directions and quickly avoiding the danger of flame transmission to the acetylene gas cabinet.

[0053] Example 3: A high-sensitivity pressure gauge 6 is installed on the back-end relief line 3 of the rupture disc 4, and a flame arrestor is arranged on the acetylene pipeline 2. Based on the arrangement of the pressure gauge 6, a micro-positive pressure alarm diagnosis mechanism and an interlocking protection mechanism are arranged on the control module 12. When the pressure monitored by the pressure gauge 6 reaches the interlocking value, the emergency shut-off valve 10 is opened by the control module 12 to inject water into the acetylene pipeline 2.

[0054] Example 4: A high-sensitivity pressure gauge 6 is installed on the back-end relief line 3 of the rupture disc 4, and a water seal tank is arranged on the acetylene pipeline 2. Based on the arrangement of the pressure gauge 6, a micro-positive pressure alarm diagnosis mechanism and an interlocking protection mechanism are arranged on the control module 12. When the pressure monitored by the pressure gauge 6 reaches the interlocking value, the emergency shut-off valve 10 is opened by the control module 12 to inject water into the acetylene pipeline 2.

[0055] Example Four

[0056] Based on the emergency treatment system described in the above embodiments one to three, the present example further describes the specific structure of the above-described rupture state collector A and the specific rules of the interlocking mechanism corresponding to the specific structure of the rupture state collector A.

[0057] In the fourth embodiment, the rupture state collector A at least includes a pressure sensor 6 and a rupture alarm sensor 5. The pressure sensor 6 is used to monitor the real-time pressure change in the back-end relief line of the rupture disc 4 from the reaction event in the industrial device to the rupture and after the rupture, thereby using the dynamic pressure change characteristics to represent one kind of real-time rupture state.

[0058] The burst alarm sensor 5 is used to break the circuit when the burst disc 4 bursts. The burst disc 4 is used to monitor the burst timing of the current pipeline 2 in the overpressure event. The burst alarm sensor 5 includes a polymer film and a conductive loop. The burst alarm sensor 5 is used to break the circuit when the burst disc 4 bursts (i.e. the output voltage cannot be formed at the output end of the sensor 5). In addition, the burst alarm sensor 5 is also used to be in the on state before the burst disc 4 bursts (i.e. a certain amplitude of effective output voltage is formed at the output end of the sensor 5). The burst alarm sensor 5 is used to monitor the burst timing of the burst disc 4 from the occurrence of the reaction event to the burst until the entire process after the burst occurs, so as to use the output voltage change characteristics generated to represent another real-time burst state.

[0059] Further, in the fourth embodiment, the control module B (12) is also used to determine the starting timing of the interlock protection mechanism according to the real-time output voltage of the burst alarm sensor 5 and in combination with the real-time pressure at the back end of the burst disc. When the control module B (12) detects that the burst alarm sensor 5 breaks the circuit (i.e. cannot detect the effective output voltage) or detects that the real-time pressure at the back end of the burst disc 4 is greater than the preset first pressure threshold, it immediately generates an alarm indication instruction to perform local alarm by using the alarm indication instruction; and then, when the burst disc 4 breaks the circuit and the real-time pressure at the back end of the burst disc is greater than the preset second pressure threshold, it immediately generates an emergency water injection instruction. The first pressure threshold is less than the second pressure threshold.

[0060] Therefore, in the fourth embodiment, one of the two evaluation conditions, i.e. comparing the real-time pressure value detected by the pressure sensor 6 with the first pressure threshold or using the voltage output by the burst alarm sensor 5 when the burst action occurs, is used to determine the starting timing of the current acetylene delivery pipeline overpressure event; and the combination of the two evaluation conditions, i.e. comparing the real-time pressure value detected by the pressure sensor 6 with the second pressure threshold and using the voltage output by the burst alarm sensor 5 when the burst action occurs, is used to determine whether the current acetylene delivery pipeline overpressure event reaches the deep out-of-control state. In this way, the embodiment of the present application can use the interlock protection mechanism corresponding to the control module 12 to interlock control the starting of the acetylene delivery pipeline overpressure event, the deep out-of-control state of the acetylene delivery pipeline overpressure event and the starting of the emergency pressure reduction processing mechanism when the deep out-of-control state is reached, so as to effectively and reliably detect the pipeline overpressure in all directions and quickly avoid the danger of flame transmission to the acetylene gas cabinet. In addition, through the joint installation of the burst alarm sensor and the pressure sensor, the reliability of the detection of the progress degree of the acetylene delivery pipeline overpressure event is greatly improved.

[0061] Example 5: install a burst alarm sensor 5 and a high-sensitivity pressure gauge 6 on the back-end relief pipeline 3 of the burst disc 4, and set a flame arrester (or a water seal tank) on the acetylene pipeline 2, when the burst alarm sensor 5 monitors the burst of the burst disc 4, and at the same time when the pressure gauge 6 monitors the pressure reaching the interlocking value, open the emergency shut-off valve 10 to inject water into the acetylene pipeline 2 through the control module 12.

[0062] Example Five

[0063] On the basis of the safety protection system described in Embodiment One to Embodiment Four, the present embodiment further provides a safety protection method for an acetylene gas cabinet (hereinafter referred to as “safety protection method”). The safety protection method is realized through the safety protection system described in Embodiment One to Embodiment Four. Figure 3 The steps of the safety protection method for an acetylene gas cabinet according to the present embodiment.

[0064] As Figure 3 described above, the safety protection method according to the present embodiment includes the following steps:

[0065] Step S301: Real-time collection of the burst state of the acetylene pipeline 2 by the burst state collector A hung on the protected acetylene pipeline 2;

[0066] Step S302: The control module 12 detects whether an acetylene pipeline overpressure event occurs according to the burst state collected in real time in step S301, and starts the interlocking protection mechanism and generates an emergency water injection instruction when an acetylene pipeline overpressure event occurs;

[0067] Step S303: The emergency treatment module C arranged on the acetylene pipeline is started to perform water injection and pressure reduction treatment on the current overpressure acetylene pipeline 2 under the control of the emergency water injection instruction.

[0068] In addition, the safety protection method according to the present embodiment further includes: setting a flame blocking module 7 on the acetylene pipeline 2 located at the front end of the emergency treatment module C, so as to prevent the flame caused by the overpressure event from spreading to the acetylene gas cabinet 11 located at the end of the acetylene pipeline 2 by using the set flame blocking module 7.

[0069] The application discloses a safety protection system and method for an acetylene gas cabinet.

[0070] The above merely provides the preferred but non-restrictive embodiment of the present application, and the protection scope of the present application should be subject to the protection scope of the claims.

[0071] It should be understood that the embodiments disclosed herein are not limited to particular structures, processes, or materials disclosed herein but are extended to equivalents thereof The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0072] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application The appearances of the phrase "in one embodiment" or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

[0073] Although the present application has been disclosed with reference to the embodiments described above, the content described is merely for the purpose of facilitating the understanding of the present application and is not intended to limit the present application Any modification and change in the form and details of the embodiments can be made by any person skilled in the art without departing from the spirit and scope of the present application The patent protection scope of the present application shall be subject to the protection scope defined by the claims

Claims

1. A safety protection system for an acetylene gas cabinet, characterized in that, The safety protection system comprises: a burst state collector arranged at the back end of the rupture disc, which is connected to the acetylene conveying pipeline to be protected, and is used to collect the burst state of the acetylene conveying pipeline in real time; a control module, which is used to detect whether an acetylene pipeline overpressure event occurs according to the burst state, and to start an interlock protection mechanism and generate an emergency water injection instruction when the event occurs; an emergency treatment module arranged on the acetylene conveying pipeline, which is used to be started under the control of the emergency water injection instruction to inject a pressure reducing fluid into the acetylene conveying pipeline to achieve pressure reduction treatment, wherein when the burst state collector comprises a pressure sensor, the control module is further used to determine the starting time of the interlock protection mechanism according to the real-time pressure at the back end of the rupture disc, wherein an alarm indication instruction is generated when it is detected that the real-time pressure at the back end of the rupture disc is greater than a preset first pressure threshold, and the emergency water injection instruction is generated when it is detected that the real-time pressure at the back end of the rupture disc is greater than a preset second pressure threshold, the first pressure threshold being less than the second pressure threshold, when the burst state collector comprises a pressure sensor and a burst alarm sensor, the burst alarm sensor is used to be powered off when the rupture disc bursts to monitor the pipeline overpressure event, wherein the control module is further used to determine the starting time of the interlock protection mechanism according to the output voltage of the rupture disc and the real-time pressure at the back end of the rupture disc, wherein an alarm indication instruction is generated when it is detected that the burst alarm sensor is powered off or the real-time pressure at the back end of the rupture disc is greater than a preset first pressure threshold, and the emergency water injection instruction is generated when it is detected that the burst alarm sensor is powered off and the real-time pressure at the back end of the rupture disc is greater than a preset second pressure threshold; wherein the emergency treatment module comprises: a water storage tank, which is used to store the amount of fluid required for water injection pressure reduction treatment; a shut-off valve connected to the control module and arranged on the outlet line of the water storage tank, which is used to be opened under the control of the emergency water injection instruction to inject water into the acetylene conveying pipeline, wherein a first end of the shut-off valve is in communication with the outlet of the water storage tank, and a second end of the shut-off valve is in communication with the acetylene conveying pipeline.

2. The safety protection system of claim 1, wherein, The burst state collector is further configured to only comprise a burst alarm sensor, which is used to be powered off when the rupture disc bursts to monitor the pipeline overpressure event, wherein the control module is further used to determine the starting time of the interlock protection mechanism according to the output voltage of the burst alarm sensor, wherein an alarm indication instruction and the emergency water injection instruction are generated when it is detected that the burst alarm sensor is powered off.

3. The safety protection system according to claim 1 or 2, characterized in that, The safety protection system further comprises: a flame blocking module arranged on the acetylene conveying pipeline at the front end of the emergency treatment module, which is used to prevent the flame caused by the overpressure event from spreading to the acetylene gas cabinet located at the end of the acetylene conveying pipeline.

4. The safety protection system of claim 3, wherein, The flame blocking module is selected from one of a flame arrester or a water seal tank.

5. The safety protection system according to claim 1 or 2, characterized in that, The control module is implemented by using a distributed control system or a programmable logic controller.

6. A safety protection method for an acetylene gas cabinet, characterized by, The safety protection method is implemented by the safety protection system as claimed in any one of claims 1-5, wherein the safety protection method comprises the following steps: collecting the burst state of the acetylene delivery pipeline in real time by using a burst state collector hung on the protected acetylene delivery pipeline; detecting whether an acetylene pipeline overpressure event is currently occurring according to the burst state, starting an interlocked protection mechanism when an overpressure event occurs, and generating an emergency water injection instruction; under the control of the emergency water injection instruction, an emergency treatment module arranged on the acetylene delivery pipeline is started to inject a depressurizing fluid into the currently overpressured acetylene delivery pipeline to achieve depressurization treatment.

7. The safety protection method according to claim 6, characterized in that, The safety protection method further comprises: a flame blocking module is arranged on the acetylene delivery pipeline at the front end of the emergency treatment module, so as to use the flame blocking module to prevent the flame caused by the overpressure event from spreading to the acetylene gas cabinet at the end of the acetylene delivery pipeline.

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