CN116792682A - Safety protection system and method for acetylene gas holder - Google Patents

Abstract

The application discloses a safety protection system for an acetylene gas cabinet, which comprises: the blasting state collector is hung on the protected acetylene conveying pipeline and is used for collecting the blasting state of the acetylene conveying pipeline in real time; the control module is used for detecting whether an acetylene pipeline overpressure event occurs currently according to the explosion state, starting an interlocking protection mechanism when the acetylene pipeline overpressure event occurs, and generating an emergency water injection instruction; the emergency treatment module is arranged on the acetylene conveying pipeline and used for being started under the control of an emergency water injection instruction so as to perform water injection depressurization treatment on the acetylene conveying pipeline with the current overpressure. The application can effectively monitor the explosion of the burst disc of the acetylene pipeline in time and effectively cut off the flame from being transmitted to the acetylene cabinet by emergency treatment measures.

Description

Safety protection system and method for acetylene gas holder

Technical Field

The application relates to the technical field of safety release of chemical equipment, in particular to a safety protection system and method for an acetylene gas cabinet.

Background

Acetylene gas cabinets are used to store acetylene gas and are typically provided in acetylene plants. Acetylene can be decomposed and exploded under the anaerobic condition, so that the acetylene gas cabinet has extremely high combustion explosion risk. When the explosion occurs in the acetylene pipeline, the flame is transferred to the acetylene gas cabinet, so that the acetylene gas in the acetylene gas cabinet can be exploded. The explosion piece is arranged in the acetylene pipeline generally, so that the overpressure of the pipeline caused by acetylene explosion can be effectively prevented, but the explosion flame can still be continuously transmitted to the acetylene gas holder along the acetylene conveying pipeline by the mode, so that the safety of the acetylene gas holder is seriously influenced.

The existing emergency treatment method for rupture of the rupture disk mainly aims at manufacturing and selecting the rupture disk, monitoring the health state of the rupture disk, blasting alarm sensors and the like, and a blasting alarm device for an acetylene cabinet and an emergency treatment method after alarm are not available.

Accordingly, there is a need in the art to provide a safety protection solution for acetylene gas chambers to address one or more of the above-mentioned technical problems, and thus, there is a need for technical measures to prevent flame from being transferred to the acetylene gas chamber when blasting.

Disclosure of Invention

In order to solve the above technical problems, an embodiment of the present application provides a safety protection system for an acetylene gas cabinet, including: the blasting state collector is hung on the protected acetylene conveying pipeline and is used for collecting the blasting state of the acetylene conveying pipeline in real time; the control module is used for detecting whether an acetylene pipeline overpressure event occurs currently according to the blasting state, starting an interlocking protection mechanism when the acetylene pipeline overpressure event occurs, and generating an emergency water injection instruction; and the emergency treatment module is arranged on the acetylene conveying pipeline and used for being started under the control of the emergency water injection instruction so as to perform water injection depressurization treatment on the acetylene conveying pipeline with the current overpressure.

Preferably, the blasting-state collector includes: the control module is also used for determining the starting time of the interlocking protection mechanism according to the output voltage of the explosion alarm sensor, wherein when the explosion alarm sensor is detected to be powered off, an alarm indication instruction and the emergency water injection instruction are generated.

Preferably, the blasting-state collector includes: the control module is further used for determining starting time of the interlocking protection mechanism according to the real-time pressure of the rear end of the rupture disc, generating an alarm indication instruction when the real-time pressure of the rear end of the rupture disc is detected to be larger than a preset first pressure threshold value, and generating the emergency water injection instruction when the real-time pressure of the rear end of the rupture disc is detected to be larger than a preset second pressure threshold value, wherein the first pressure threshold value is smaller than the second pressure threshold value.

Preferably, the blasting-state collector includes: the control module is further used for determining starting time of the interlocking protection mechanism according to output voltage of the rupture disk and real-time pressure of the rear end of the rupture disk, wherein an alarm indication instruction is generated when the rupture alarm sensor is powered off or the real-time pressure of the rear end of the rupture disk is larger than a preset first pressure threshold value, and the emergency water injection instruction is generated when the rupture alarm sensor is powered off and the real-time pressure of the rear end of the rupture disk is larger than a preset second pressure threshold value.

Preferably, the safety protection system further comprises: a flame blocking module is arranged on the acetylene delivery pipeline at the front end of the emergency treatment module and is used for preventing flame caused by an overpressure event from propagating to the acetylene gas cabinet at the tail end of the acetylene delivery pipeline.

Preferably, the flame blocking module is selected from one of a flame arrestor and a water sealed tank.

Preferably, the emergency treatment module comprises: a water storage tank for filling a fluid in an amount required for the water injection depressurization process; and the shut-off valve is connected with the control module and arranged on an outlet line of the water storage tank and is used for being opened under the control of the emergency water injection instruction, wherein a first end of the shut-off valve is communicated with an outlet of the water storage tank, and a second end of the shut-off valve is communicated with the acetylene conveying pipeline.

Preferably, the control module is implemented using a distributed control system or a programmable logic controller.

In another aspect, there is provided a safety protection method for an acetylene gas cabinet, which is implemented by the safety protection system as described above, wherein the safety protection method includes the steps of: the explosion state of the acetylene conveying pipeline is acquired in real time by utilizing an explosion state acquisition device hung on the protected acetylene conveying pipeline; detecting whether an acetylene pipeline overpressure event occurs currently according to the blasting state, starting an interlocking protection mechanism when the acetylene pipeline overpressure event occurs, and generating an emergency water injection instruction; and under the control of the emergency water injection instruction, an emergency treatment module arranged on the acetylene conveying pipeline is started to perform water injection depressurization treatment on the acetylene conveying pipeline with the current overpressure.

Preferably, the security protection method further comprises: a flame blocking module is provided on the acetylene delivery conduit at the front end of the emergency treatment module to prevent propagation of a flame initiated by an overpressure event to the acetylene gas holder at the end of the acetylene delivery conduit with the flame blocking module.

One or more embodiments of the above-described solution may have the following advantages or benefits compared to the prior art:

the application provides a safety protection system and method for an acetylene gas cabinet. The system and the method ensure the reliability of the burst state monitoring result of the burst sheet by configuring the combined sensor equipment, start the emergency cut-off valve to inject water in the water injection tank into the acetylene conveying pipeline by using the arranged emergency water injection device and burst the burst sheet monitored by the discharge monitoring device (combined sensor component), and set a blocking module in the acetylene conveying pipeline, thereby effectively blocking flame from being transmitted to the acetylene gas cabinet when the acetylene pipeline is exploded by emergency treatment measures and further ensuring the safety of the acetylene gas cabinet in the burst state.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application, without limitation to the application. In the drawings:

fig. 1 is a schematic diagram of the overall structure of a safety protection system for an acetylene gas cabinet according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a specific structure of a safety protection system for an acetylene gas cabinet according to an embodiment of the present application.

Fig. 3 is a step diagram of a safety protection method for an acetylene gas cabinet according to an embodiment of the present application.

Detailed Description

The following will describe embodiments of the present application in detail with reference to the drawings and examples, thereby solving the technical problems by applying technical means to the present application, and realizing the technical effects can be fully understood and implemented accordingly. It should be noted that, as long as no conflict is formed, each embodiment of the present application and each feature of each embodiment may be combined with each other, and the formed technical solutions are all within the protection scope of the present application.

Additionally, the steps illustrated in the flowcharts of the figures may be performed in a computer system, such as a set of computer executable instructions. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.

In the practical application process, an overpressure working condition caused by a certain reaction event occurs in the chemical device, and when the overpressure working condition occurs, a release event for conveying the reaction material in the reaction event occurrence container to the release collecting tank is activated, so that the safety of the whole chemical device is ensured, and the influence of container nodes generated by the overpressure working condition on nodes of other chemical devices is reduced.

The acetylene gas holder is an indispensable node equipment in a chemical plant for storing acetylene gas, and is generally provided in the acetylene plant, and the acetylene gas is transported from the acetylene gas inlet 1 to the acetylene gas holder 11 through an acetylene transport pipe 2 (refer to fig. 2). Acetylene can be decomposed and exploded under the anaerobic condition, so that the acetylene gas cabinet has extremely high combustion explosion risk. When an explosion occurs in an acetylene pipe (for example, caused by an overpressure condition), the flame is transferred to an acetylene gas cabinet, and the acetylene gas in the acetylene gas cabinet can be caused to explode. In order to prevent the influence of the overpressure working condition in the chemical device on the acetylene gas holder, in general, an explosion piece is arranged in the acetylene pipeline 2, so that the pipeline overpressure caused by acetylene explosion can be effectively prevented, but the manner can not still enable the explosion flame to be continuously transmitted to the acetylene gas holder along the acetylene conveying pipeline, thereby seriously affecting the safety of the acetylene gas holder.

The existing emergency treatment method for rupture of the rupture disk mainly aims at manufacturing and selecting the rupture disk, monitoring the health state of the rupture disk, blasting alarm sensors and the like, and a blasting alarm device for an acetylene cabinet and an emergency treatment method after alarm are not available.

Accordingly, in order to solve one or more of the above technical problems, the present application provides a safety protection system and method for an acetylene gas cabinet. The system and the method comprise a release monitoring device, a flame blocking module, an emergency water injection device and a control module, wherein the burst disc on the acetylene pipeline can be timely and effectively monitored when being blasted, and flame can be effectively blocked from being transmitted to an acetylene cabinet through emergency treatment measures. Therefore, the reliability of monitoring the explosion state of the acetylene conveying pipeline is ensured through the combined sensor, and the transmission of flame to the acetylene gas holder is effectively and timely blocked through the combination of emergency water injection and flame blocking treatment, so that the safety of the whole chemical device in the explosion state is ensured.

Example 1

Fig. 1 is a schematic diagram of the overall structure of a safety protection system for an acetylene gas cabinet according to an embodiment of the present application. As shown in fig. 1, a safety protection system for an acetylene gas cabinet according to an embodiment of the present application (hereinafter referred to as "safety protection system") at least includes: a blasting state collector A, a control module B and an emergency treatment module C.

The explosion state collector A is hung on the protected acetylene delivery pipeline 2, and further, the explosion state collector A is hung on the protected acetylene delivery pipeline 2 through a discharge pipeline 3. In this way, the burst status collector a is in communication with the acetylene delivery conduit 2 via the clear bleed line 3. The control module B (see component 12 in fig. 2) is electrically connected to the blast state collector a. The emergency treatment module C is arranged in the protected acetylene delivery pipeline 2 and is positioned between the hanging position of the acetylene delivery pipeline 2 where the rupture disk 4 is positioned and the acetylene cabinet 11. Specifically, the blasting-state collector a is used for collecting the blasting state of the acetylene delivery pipe 2 in real time.

In addition, a rupture disk 4 is arranged in the relief pipeline 3 positioned at the front end of the explosion state collector A, the rupture disk 4 is used for monitoring the overpressure working condition in the acetylene delivery pipeline 2 currently and is exploded when a pipeline overpressure (or pipeline explosion) event occurs, and therefore the application utilizes the rupture disk 4 to determine the occurrence time of the pipeline overpressure (or pipeline explosion) event. In an embodiment of the application, a corresponding rupture disk 4 is provided for the currently protected acetylene delivery pipe 2 to monitor the instant of occurrence of an overpressure condition of the current pipe 2.

The control module B (14) is used for detecting whether an acetylene line overpressure event (for example, whether an acetylene line 2 explosion event occurs) occurs currently according to the explosion state monitored in real time from the explosion state collector A, and immediately starting an interlocking protection mechanism and simultaneously generating an emergency water injection instruction when the acetylene line overpressure event occurs.

Further, in the embodiment of the present application, the control module B (14) is implemented by a Distributed Control System (DCS) or a Programmable Logic Controller (PLC).

Further, the emergency treatment module C is configured to be started under control of the emergency water injection command sent by the control device B (14), so as to perform water injection depressurization processing on the acetylene delivery pipeline 2 corresponding to the current pipeline overpressure event.

Fig. 2 is a schematic diagram of a specific structure of a safety protection system for an acetylene gas cabinet according to an embodiment of the present application. The specific structure and function of the emergency treatment module C according to the embodiment of the present application will be described below with reference to fig. 2.

The emergency treatment module C comprises at least: a water storage tank 8 and a shut-off valve 10. As shown in fig. 2, the shut-off valve 10 is electrically connected to the control module 14. The water storage tank 8 is used for filling the amount of depressurization fluid required for the (emergency) water injection depressurization process described above.

The shut-off valve 10 is provided on the outlet line of the water storage tank 8. Further, a first end of the shut-off valve 10 communicates with an outlet of the water reservoir 8, and a second end of the shut-off valve 10 communicates with the interior of the acetylene delivery conduit 2. The shut-off valve 10 is used to open under control of the emergency water injection command described above, and to timely inject depressurization fluid into the acetylene delivery conduit 2, thereby performing depressurization control on the current conduit overpressure event. Normally, the emergency shut-off valve 10 is normally closed, and the opening of the emergency shut-off valve 10 is controlled by the control module 12 in an emergency, so that a depressurization fluid (for example, water) is injected into the acetylene delivery pipe 2.

In addition, in order to further prevent the explosive flame in the conveying pipeline 2 from being transmitted to the acetylene gas cabinet 11, the safety protection system according to the embodiment of the application further comprises: a flame barrier module 7. The flame blocking module 7 is arranged at the front end of the hanging position of the emergency treatment module C on the acetylene conveying pipeline. That is, the flame blocking module 7 is located between the hooking position of the burst status collector a on the acetylene delivery pipe 2 and the hooking position of the emergency treatment module C on the acetylene delivery pipe 2. The flame blocking module 7 is used to prevent flames caused by the current pipe overpressure event from continuing to propagate to the acetylene gas cabinet 11 located at the end of the acetylene delivery pipe 2.

Wherein the flame blocking module 7 is selected from one of a flame arrestor (e.g. a fire arrestor) or a water sealed tank. The flame barrier module 7 is mounted at the rear end of the tapping line 2 at the hooking position on the acetylene line. The flame arrester is internally filled with a metal net filter element or a corrugated filter element so as to prevent flame propagation. In addition, water with a certain liquid level is preloaded in the water sealed tank, an acetylene pipeline which is led into an inlet of the water sealed tank stretches below the water level, and an outlet pipeline of the water sealed tank is above the water level, so that continuous propagation of flame is prevented through blocking of water in the water sealed pipe.

Example two

Based on the safety protection system according to the first embodiment, the present example further describes the specific structure of the blasting-state collector a and the specific rules of the interlocking mechanism corresponding to the specific structure of the blasting-state collector a.

In the second embodiment, the blast state collector a includes at least: a blasting alarm sensor 5. The explosion warning sensor 5 is used for power outage when the rupture disk 4 is exploded. Wherein the rupture disk 4 is used to monitor the initiation timing of an overpressure event of the current conduit 2.

The burst alarm sensor 5 comprises a polymer film and a conductive loop. The burst alarm sensor 5 is used to de-energize (i.e. no output voltage can be developed at the output of the sensor 5) when the rupture disk 4 bursts. In addition, the explosion warning sensor 5 is also used to be in a conducting state (i.e. to form an effective output voltage with a certain amplitude at the output end of the sensor 5) before the rupture disk 4 is exploded. The blasting alarm sensor 5 is used for monitoring the whole process from the reaction event to the blasting until the blasting time of the blasting sheet 4, so that the generated output voltage change characteristic is utilized to represent the real-time blasting state.

Further, in the second embodiment, the control module B (12) is further configured to determine the activation timing of the interlock protection mechanism according to the real-time output pressure of the explosion warning sensor 5. When the control module B (12) detects that the explosion alarm sensor 5 is powered off (i.e. the output end of the sensor 5 cannot form output voltage), an alarm instruction is immediately generated, so that local alarm is performed by using the alarm instruction, and meanwhile, an emergency water injection instruction is immediately generated.

In this way, in the second embodiment, the activation timing of the interlock protection mechanism is determined using only the voltage output from the explosion warning sensor 5 when the explosion operation occurs. Further, the burst alarm sensor of the present application is a polymeric film placed behind the rupture disk and powered off after the rupture disk bursts, thereby indicating rupture of the rupture disk while activating the interlock action. In this way, the embodiment of the application can perform the interlocking control on the starting of the overpressure event of the acetylene pipeline and the starting of the emergency depressurization processing mechanism under the overpressure event by utilizing the interlocking protection mechanism corresponding to the control module 12, so that the omnibearing pipeline overpressure is effectively and reliably detected, and the danger that flame is transmitted to the acetylene gas tank is rapidly avoided.

Example 1: the explosion alarm sensor 5 is installed on the relief pipeline 3 at the rear end of the rupture disk 4, the fire-retarding tower is arranged on the acetylene pipeline 2, and when the explosion alarm sensor 5 detects that the rupture disk 4 is exploded, the emergency cut-off valve 10 is opened by the control module 12 to inject water into the acetylene pipeline 2.

Example 2: the explosion alarm sensor 5 is installed on the relief pipeline 3 at the rear end of the rupture disk 4, the water seal tank is arranged on the acetylene pipeline 2, and when the explosion alarm sensor 5 monitors that the rupture disk 4 is exploded, the emergency cut-off valve 10 is opened through the control module 12 to inject water into the acetylene pipeline 2.

Example III

Based on the safety protection system according to the first embodiment, the present example further describes the specific structure of the blasting-state collector a and the specific rules of the interlocking mechanism corresponding to the specific structure of the blasting-state collector a.

In the third embodiment, the blast state collector a includes at least: a pressure sensor (pressure gauge) 6. The pressure sensor (pressure gauge) 6 is used to monitor the real-time pressure change in the relief line at the rear end of the rupture disk 4 from the reaction event in the industrial installation to the explosion until after the explosion occurs, thereby characterizing the real-time explosion condition by using the dynamic pressure change feature.

Further, in the third embodiment, the control module B (12) is further configured to determine the activation timing of the interlock protection mechanism according to the real-time pressure of the rear end of the rupture disc. When the control module B (12) detects that the real-time pressure of the rear end of the rupture disk 4 is larger than a preset first pressure threshold value, an alarm instruction is immediately generated so as to locally alarm by using the alarm instruction, and then when the control module B detects that the real-time pressure of the rear end of the rupture disk 4 is larger than a preset second pressure threshold value, an emergency water injection instruction is immediately generated. Wherein the first pressure threshold is less than the second pressure threshold.

Thus, in embodiment three, the start-up timing of the current acetylene delivery conduit overpressure event is determined using only the real-time pressure value detected by the pressure sensor 5 compared to the first pressure threshold value, and whether the current acetylene delivery conduit overpressure event reaches a deep run-away condition is determined using the real-time pressure value detected by the pressure sensor 5 compared to the second pressure threshold value. Further, the high-sensitivity pressure sensor 5 according to the embodiment of the present application can monitor the pressure change after the rupture of the rupture disc, so as to indicate the rupture of the rupture disc and activate the interlocking action. In this way, the embodiment of the application can perform interlocking control on the starting of the overpressure event of the acetylene delivery pipeline, the deep uncontrolled state of the overpressure event of the acetylene delivery pipeline and the starting of the emergency depressurization processing mechanism under the deep uncontrolled state by utilizing the interlocking protection mechanism corresponding to the control module 12, so that the omnibearing pipeline overpressure is effectively and reliably detected, and the danger that flame is transmitted to the acetylene gas cabinet is rapidly avoided.

Example 3: the high-sensitivity pressure gauge 6 is installed on the relief pipeline 3 at the rear end of the rupture disc 4, the fire-retarding tower is arranged on the acetylene pipeline 2, the micro-positive pressure alarm diagnosis mechanism and the interlocking protection mechanism are arranged on the control module 12 based on the arrangement of the pressure gauge 6, and after the pressure gauge 6 monitors that the pressure reaches an interlocking value, the emergency cut-off valve 10 is opened by the control module 12 to inject water into the acetylene pipeline 2.

Example 4: the high-sensitivity pressure gauge 6 is installed on the relief pipeline 3 at the rear end of the rupture disc 4, the acetylene pipeline 2 is provided with a water seal tank, the control module 12 is provided with a micro positive pressure alarm diagnosis mechanism and an interlocking protection mechanism based on the arrangement of the pressure gauge 6, and when the pressure gauge 6 monitors that the pressure reaches an interlocking value, the control module 12 opens the emergency cut-off valve 10 to inject water into the acetylene pipeline 2.

Example IV

The present example further describes the specific structure of the blasting-state collector a and the specific rules of the interlock mechanism corresponding to the specific structure of the blasting-state collector a, based on the emergency treatment system according to the first to third embodiments.

In the fourth embodiment, the blast state collector a includes at least: a pressure sensor 6 and a burst alarm sensor 5. The pressure sensor 6 is used to monitor the real-time pressure change in the relief line at the rear end of the rupture disk 4 throughout the process from the reaction event in the industrial installation to the rupture until after the rupture occurs, thereby utilizing the dynamic pressure change characteristics to characterize one of the real-time conditions of the rupture.

The explosion warning sensor 5 is used for power outage when the rupture disk 4 is exploded. Wherein the rupture disk 4 is used to monitor the initiation timing of an overpressure event of the current conduit 2. The burst alarm sensor 5 comprises a polymer film and a conductive loop. The burst alarm sensor 5 is used to de-energize (i.e. no output voltage can be developed at the output of the sensor 5) when the rupture disk 4 bursts. In addition, the explosion warning sensor 5 is also used to be in a conducting state (i.e. to form an effective output voltage with a certain amplitude at the output end of the sensor 5) before the rupture disk 4 is exploded. The blasting alarm sensor 5 is used for monitoring the whole process from the reaction event to the blasting until after the blasting occurs, and the blasting moment of the blasting piece 4 is generated, so that the generated output voltage change characteristic is used for representing another real-time blasting state.

Further, in the fourth embodiment, the control module B (12) is further configured to determine the activation timing of the interlock protection mechanism according to the real-time output voltage of the explosion warning sensor 5 in combination with the real-time pressure of the rear end of the rupture disc. When the control module B (12) detects that the explosion alarm sensor 5 is powered off (namely that effective output voltage cannot be detected), or detects that the real-time pressure of the rear end of the rupture disc 4 is greater than a preset first pressure threshold value, an alarm instruction is immediately generated so as to carry out local alarm by using the alarm instruction; and then, immediately generating an emergency water injection instruction when the rupture disk 4 is detected to be powered off and the real-time pressure at the rear end of the rupture disk is larger than a preset second pressure threshold value. Wherein the first pressure threshold is less than the second pressure threshold.

Thus, in the fourth embodiment, the starting time of the overpressure event of the current acetylene delivery pipe is determined by comparing the real-time pressure value detected by the pressure sensor 6 with the first pressure threshold value or by using one of two evaluation conditions of the voltage outputted by the explosion alarm sensor 5 when the explosion action occurs; moreover, the real-time pressure value detected by the pressure sensor 6 is compared with a second pressure threshold value, and whether the current acetylene delivery pipeline overpressure event reaches a deep uncontrolled state is determined by utilizing the combination of two evaluation conditions, namely the voltage output by the explosion alarm sensor 5 when the explosion action occurs. In this way, the embodiment of the application can perform interlocking control on the starting of the overpressure event of the acetylene delivery pipeline, the deep uncontrolled state of the overpressure event of the acetylene delivery pipeline and the starting of the emergency depressurization processing mechanism under the deep uncontrolled state by utilizing the interlocking protection mechanism corresponding to the control module 12, so that the omnibearing pipeline overpressure is effectively and reliably detected, and the danger that flame is transmitted to the acetylene gas cabinet is rapidly avoided. In addition, through the combined installation of the explosion alarm sensor and the pressure sensor, the reliability of the detection of the overpressure event progress degree of the acetylene conveying pipeline is greatly improved.

Example 5: the explosion alarm sensor 5 and the high-sensitivity pressure gauge 6 are installed on the relief pipeline 3 at the rear end of the rupture disk 4, the flame arrester (or a water seal tank) is arranged on the acetylene pipeline 2, when the explosion alarm sensor 5 monitors that the rupture disk 4 is exploded, and simultaneously, after the pressure gauge 6 monitors that the pressure reaches an interlocking value, the emergency cut-off valve 10 is opened through the control module 12 to inject water into the acetylene pipeline 2.

Example five

On the other hand, based on the safety protection system described in the first to fourth embodiments, the embodiment of the present application further provides a safety protection method for an acetylene gas cabinet (hereinafter referred to as "safety protection method"). The security protection method is realized by the security protection system according to the first to fourth embodiments. Fig. 3 is a step diagram of a safety protection method for an acetylene gas cabinet according to an embodiment of the present application.

As shown in fig. 3, the security protection method according to the embodiment of the present application includes the following steps:

step S301, utilizing a blasting state collector A hung on the protected acetylene delivery pipeline 2 to collect the blasting state of the acetylene delivery pipeline 2 in real time;

step S302, the control module 12 detects whether an acetylene pipeline overpressure event occurs currently according to the blasting state acquired in real time in step S301, starts an interlocking protection mechanism when the acetylene pipeline overpressure event occurs, and generates an emergency water injection instruction;

step S303 is started by the emergency treatment module C disposed on the acetylene delivery pipe under the control of the emergency water injection command, so as to perform water injection depressurization on the acetylene delivery pipe 2 with the current overpressure.

In addition, the safety protection method according to the embodiment of the application further comprises the following steps: a flame blocking module 7 is provided on the acetylene delivery pipe 2 at the front end of the emergency treatment module C so that the flame caused by the overpressure event is prevented from propagating to the acetylene gas tank 11 at the end of the acetylene delivery pipe 2 by the provided flame blocking module 7.

The application discloses a safety protection system and method for an acetylene gas cabinet. The system and the method ensure the reliability of the burst state monitoring result of the burst sheet by configuring the combined sensor equipment, start the emergency cut-off valve to inject water in the water injection tank into the acetylene conveying pipeline by using the arranged emergency water injection device and burst the burst sheet monitored by the discharge monitoring device (combined sensor component), and set a blocking module in the acetylene conveying pipeline, thereby effectively blocking flame from being transmitted to the acetylene gas cabinet when the acetylene pipeline is exploded by emergency treatment measures and further ensuring the safety of the acetylene gas cabinet in the burst state.

The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

It is to be understood that the disclosed embodiments are not limited to the specific structures, process steps, or materials disclosed herein, but are intended to extend to equivalents of these features as would be understood by one of ordinary skill in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

Reference in the 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. Thus, the appearances of the phrase "one embodiment" or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

While the embodiments of the present application have been described above, the embodiments are presented for the purpose of facilitating understanding of the application and are not intended to limit the application. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the appended claims.

Claims (10)

1. A safety protection system for an acetylene gas cabinet, comprising:

the blasting state collector is hung on the protected acetylene conveying pipeline and is used for collecting the blasting state of the acetylene conveying pipeline in real time;

the control module is used for detecting whether an acetylene pipeline overpressure event occurs currently according to the blasting state, starting an interlocking protection mechanism when the acetylene pipeline overpressure event occurs, and generating an emergency water injection instruction;

and the emergency treatment module is arranged on the acetylene conveying pipeline and used for being started under the control of the emergency water injection instruction so as to perform water injection depressurization treatment on the acetylene conveying pipeline with the current overpressure.

2. The safety protection system of claim 1, wherein the blast state collector comprises: a burst alarm sensor for powering down when a burst disk for monitoring for a pipeline overpressure event is blasted, wherein,

the control module is further used for determining starting time of the interlocking protection mechanism according to the output voltage of the explosion alarm sensor, wherein when the explosion alarm sensor is detected to be powered off, an alarm indication instruction and the emergency water injection instruction are generated.

3. The safety protection system of claim 1, wherein the blast state collector comprises: a pressure sensor, wherein,

the control module is further configured to determine a start timing of the interlock protection mechanism according to a real-time pressure of the rear end of the rupture disc, generate an alarm instruction when the real-time pressure of the rear end of the rupture disc is detected to be greater than a preset first pressure threshold, and generate the emergency water injection instruction when the real-time pressure of the rear end of the rupture disc is detected to be greater than a preset second pressure threshold, where the first pressure threshold is smaller than the second pressure threshold.

4. The safety protection system of claim 1, wherein the blast state collector comprises: a pressure sensor and a burst alarm sensor for de-energizing when a burst disk used to monitor for a pipeline overpressure event is blasted, wherein,

the control module is further configured to determine a start timing of the interlock protection mechanism according to the output voltage of the rupture disc and the real-time pressure of the rear end of the rupture disc, where an alarm instruction is generated when the rupture alarm sensor is detected to be powered off or the real-time pressure of the rear end of the rupture disc is greater than a preset first pressure threshold, and the emergency water injection instruction is generated when the rupture alarm sensor is detected to be powered off and the real-time pressure of the rear end of the rupture disc is greater than a preset second pressure threshold.

5. The safety protection system according to any one of claims 1 to 4, further comprising:

a flame blocking module is arranged on the acetylene delivery pipeline at the front end of the emergency treatment module and is used for preventing flame caused by an overpressure event from propagating to the acetylene gas cabinet at the tail end of the acetylene delivery pipeline.

6. The safety protection system of claim 5, wherein the flame barrier module is selected from one of a flame arrestor or a water sealed tank.

7. The safety protection system according to any one of claims 1 to 6, wherein the emergency treatment module comprises:

a water storage tank for filling a fluid in an amount required for the water injection depressurization process;

and the shut-off valve is connected with the control module and arranged on an outlet line of the water storage tank and is used for being opened under the control of the emergency water injection instruction, wherein a first end of the shut-off valve is communicated with an outlet of the water storage tank, and a second end of the shut-off valve is communicated with the acetylene conveying pipeline.

8. The safety protection system according to any one of claims 1 to 7, wherein the control module is implemented using a distributed control system or a programmable logic controller.

9. A safety protection method for an acetylene gas cabinet, characterized in that the safety protection method is realized by a safety protection system according to any one of claims 1 to 8, wherein the safety protection method comprises the steps of:

the explosion state of the acetylene conveying pipeline is acquired in real time by utilizing an explosion state acquisition device hung on the protected acetylene conveying pipeline;

detecting whether an acetylene pipeline overpressure event occurs currently according to the blasting state, starting an interlocking protection mechanism when the acetylene pipeline overpressure event occurs, and generating an emergency water injection instruction;

and under the control of the emergency water injection instruction, an emergency treatment module arranged on the acetylene conveying pipeline is started to perform water injection depressurization treatment on the acetylene conveying pipeline with the current overpressure.

10. The security protection method of claim 9, further comprising:

a flame blocking module is provided on the acetylene delivery conduit at the front end of the emergency treatment module to prevent propagation of a flame initiated by an overpressure event to the acetylene gas holder at the end of the acetylene delivery conduit with the flame blocking module.