CN111156427A - Active sealing safety protection device and method for hydrogen pipeline - Google Patents
Active sealing safety protection device and method for hydrogen pipeline Download PDFInfo
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- CN111156427A CN111156427A CN201911399730.2A CN201911399730A CN111156427A CN 111156427 A CN111156427 A CN 111156427A CN 201911399730 A CN201911399730 A CN 201911399730A CN 111156427 A CN111156427 A CN 111156427A
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- hydrogen
- cavity
- gas pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
- F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Abstract
The application relates to a hydrogen pipeline active sealing safety protection device and a method. Includes a housing, a first flexible seal, and an active sealing mechanism. The shell is internally provided with a cavity, the hydrogen transportation pipeline is arranged in the cavity, and the shell is detachably connected with the hydrogen transportation pipeline. The first flexible sealing element is arranged in the cavity to form an insulating and sealing environment in the cavity. And a flow passage is arranged on the contact surface of the first flexible sealing element and the hydrogen transportation pipeline. The flow passage is provided with flow holes at intervals. The active sealing mechanism is arranged in the cavity. The active sealing mechanism is used for detecting the hydrogen content in the cavity, conveying the structural sealant to the flow channel, and filling the flow channel with the structural sealant. The device can restrict the environment of leaking hydrogen through making one in the easy place that leaks, moreover, when hydrogen reveals, initiative sealing mechanism quick response will fill the structure in the discharge orifice and seal glue to make above-mentioned device can continue to keep sealed when internal pressure constantly risees, and then prevent the hydrogen loss.
Description
Technical Field
The application relates to the field of hydrogen delivery, in particular to a hydrogen pipeline active sealing safety protection device and method.
Background
Energy exhaustion and environmental pollution caused by fossil energy consumption are becoming serious, and large-scale development and utilization of renewable energy are imperative. Although renewable energy resources are abundant and widely distributed, the renewable energy resources fluctuate violently and are periodically influenced by natural environments. Hydrogen is an effective energy storage mode, electric energy is converted into chemical energy to be stored in the hydrogen in the peak period of renewable energy power generation, and the energy carried by the hydrogen is converted into the electric energy again through a fuel cell for use in the peak period of power utilization. Therefore, the technologies of hydrogen preparation, storage, transportation and the like are regarded by relevant researchers.
However, hydrogen is a very flammable and explosive gas, and when the volume fraction of hydrogen in air exceeds 4% -75%, explosion can be caused when the hydrogen meets a fire source. Therefore, hydrogen leakage and active protection after leakage during transportation and storage of hydrogen are very important.
Disclosure of Invention
Based on this, the present application provides an active sealing safety protection device and method for a hydrogen pipeline to prevent leakage hydrogen from escaping, and further to prevent safety accidents.
An active seal safety device for a hydrogen pipeline, comprising:
the hydrogen transportation device comprises a shell, a hydrogen transportation pipeline and a hydrogen storage tank, wherein the shell is internally provided with a cavity, the hydrogen transportation pipeline is arranged in the cavity, and the shell is detachably connected with the hydrogen transportation pipeline;
the first flexible sealing element is arranged between the shell and the hydrogen transportation pipeline so as to form an insulated and sealed environment in the cavity, a flow passage is arranged on the contact surface of the first flexible sealing element and the hydrogen transportation pipeline, and flow holes are arranged on the flow passage at intervals; and
initiative sealing mechanism, inside has the sealed glue of structure, set up in the cavity is used for detecting hydrogen content in the cavity, the gas pressure value or the gas pressure variation, and will sealed glue of structure carry extremely the runner, and pass through the runner fill in the discharge orifice.
In one embodiment, the active sealing mechanism comprises:
the detection control circuit is arranged in the cavity and used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity; and
and the execution assembly is electrically connected with the detection control circuit and is connected with the flow channel, and when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector is greater than a preset value, the detector controls the execution assembly to convey the structural sealant to the flow channel and fill the structural sealant in the flow hole through the flow channel.
In one embodiment, the execution component comprises:
the motor is electrically connected with the detection control circuit;
the structural sealant pushing piece is electrically connected with the motor; and
the structure sealant storage bin stores the structure sealant, one end of the structure sealant storage bin is connected with the structure sealant pushing piece, and the other end of the structure sealant storage bin is connected with the flow channel.
In one embodiment, the detection control circuit includes:
the detector is arranged in the cavity and used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity; and
and the relay is electrically connected with the detector and the motor respectively, when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector is greater than a preset value, a switch-on signal is sent to the relay, and after the relay receives the switch-on signal, the relay is closed so as to control the motor to start working.
In one embodiment, the active sealing mechanism further comprises:
and the alarm is electrically connected with the detector, and sends an alarm signal to the alarm when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector is greater than a preset value.
In one embodiment, the detector is any one of a hydrogen concentration detector, a gas pressure value detector, or a gas pressure change detector.
In one embodiment, the alarm is a warning light or a buzzer.
In one embodiment, the housing has an opening extending through the housing in the direction of extension of the hydrogen transport conduit, the opening being adapted to locate the hydrogen transport conduit in the cavity.
In one embodiment, the method further comprises the following steps:
the buckle is fixedly arranged on the outer side wall of the shell; and
the snap ring, one end is fixed set up in the lateral wall of casing, and the snap ring with the buckle interval set up in the both ends of opening, work as the other end block of snap ring in during the buckle, will through pressing the snap ring the opening is closed.
In one embodiment, the method further comprises the following steps:
the second flexible sealing element, set up in the casing the opening part, first flexible sealing element with the flexible sealing element integrated into one piece of second, and, the material of first flexible sealing element with the material of the flexible sealing element of second is any one in rubber materials, resin material, plastic material, silica gel material or other flexible sealing material.
A hydrogen pipeline active sealing safety protection method is realized by using the hydrogen pipeline active sealing safety protection device in any one of the embodiments, and comprises the following steps:
s10, wrapping a joint of a hydrogen transportation pipeline by using a shell, and arranging a first flexible sealing element between the shell and the hydrogen transportation pipeline to form a sealed cavity;
s20, detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity by using an active sealing mechanism;
and S30, when the active sealing mechanism detects that the hydrogen content, the gas pressure value or the gas pressure variation in the cavity is greater than a preset value, the active sealing mechanism conveys the structural sealant to the flow channel, and the structural sealant is filled in the flow hole on the flow channel through the flow channel.
The active sealing safety protection device for the hydrogen pipeline comprises a shell, a first flexible sealing element and an active sealing mechanism. The shell is internally provided with a cavity, a hydrogen transportation pipeline is arranged in the cavity, and the shell is detachably connected with the hydrogen transportation pipeline. The first flexible seal is disposed in the cavity to form an insulating sealed environment within the cavity. And a flow channel is arranged on the contact surface of the first flexible sealing element and the hydrogen transportation pipeline. The runner is provided with flow holes at intervals. The active sealing mechanism is arranged in the cavity. The active sealing mechanism is used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity, conveying the structural sealant to the flow channel, and filling the flow channel into the flow hole. Above-mentioned hydrogen pipeline initiative sealing safety device makes an environment that can retrain the leakage hydrogen through easily taking place the department that leaks, moreover, when hydrogen is revealed, initiative sealing mechanism quick response will fill the structure sealed glue in the discharge orifice, so that hydrogen pipeline initiative sealing safety device can continue to keep sealed when internal pressure constantly risees, and then prevents the hydrogen loss.
Drawings
Fig. 1 is a schematic diagram of an active seal safety device for a hydrogen pipeline according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an active seal safety device for a hydrogen pipeline according to an embodiment of the present disclosure;
FIG. 3 is a block diagram of an active sealing mechanism provided in accordance with an embodiment of the present application;
FIG. 4 is a block diagram of an execution component provided in one embodiment of the present application;
FIG. 5 is a schematic diagram of an active seal safety device for a hydrogen pipeline according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of an active seal safety device for a hydrogen pipeline according to an embodiment of the present disclosure;
fig. 7 is a flowchart of an active sealing safety protection method for a hydrogen pipeline according to an embodiment of the present disclosure.
Description of the main element reference numerals
Active sealing safety protection device 10 for hydrogen pipeline
Fastener 110
Snap ring 120
First flexible seal 200
Structural sealant storage bin 323
Gear set 324
Second flexible seal 400
Pipe joint nut 30
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The present application provides an active seal safety device 10 for a hydrogen pipeline. The hydrogen circuit active seal safety shield 10 includes a housing 100, a first flexible seal 200, and an active sealing mechanism 300.
The housing 100 has a cavity 101 therein, the hydrogen transport pipe 20 is disposed in the cavity 101, and the housing 100 is detachably connected to the hydrogen transport pipe 20. The first flexible sealing element 200 is disposed between the housing 100 and the hydrogen transportation pipeline 20 to form an insulating and sealing environment in the cavity 101, and a flow channel 201 is disposed on a contact surface between the first flexible sealing element 200 and the hydrogen transportation pipeline 20. The runner 201 is provided with flow holes 202 at intervals. The active sealing mechanism 300 has a structural sealant 301 therein. The active sealing mechanism 300 is disposed in the cavity 101. The active sealing mechanism 300 is used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101, conveying the structural sealant 301 to the flow channel 201, and filling the flow channel 201 in the flow hole 202.
Specifically, referring to fig. 1, the shape and size of the housing 100 are not particularly limited as long as the portion of the hydrogen transportation pipe 20 that is susceptible to leakage is located inside the housing 100. The shape and size of the housing 100 may be set according to the pipe diameter of the hydrogen transport pipe 20. The housing 100 ensures that the parts of the hydrogen transport pipe 20 that are susceptible to leakage are inside the housing 100. That is, for example, when the part of the hydrogen transportation pipe 20 that is susceptible to leakage is a transportation pipe joint, it is necessary to ensure that the transportation pipe joint can be entirely located in the cavity 101 of the housing 100. The transport pipe joints of the respective sections of hydrogen transport pipe 20 are connected by pipe joint nuts 30. Of course, the transportation pipe joints of the hydrogen transportation pipes 20 may be connected by other connection methods. The upper and lower bottom surfaces of the housing 100 have through-holes to facilitate the passage of the hydrogen transport pipe 20. The housing 100 and the hydrogen transportation pipeline 20 may be detachably connected by providing an opening in the housing 100, and when the hydrogen transportation pipeline is properly installed, the housing 100 is sleeved on a part of the hydrogen transportation pipeline, where leakage is likely to occur, through the opening in the housing 100. The housing 100 may be detachably connected to the hydrogen transportation pipe 20 by providing the housing 100 as two half shells that are butted together. The two half shells can be detachably connected with each other through bolts, clamping or other detachable modes. The detachable connection of the housing 100 and the hydrogen transportation pipeline 20 may also be achieved by configuring the housing 100 as an elastically contractible structure, and before the hydrogen transportation pipeline is installed, the housing 100 is directly sleeved on a part of the hydrogen transportation pipeline, where leakage is likely to occur, and then the hydrogen transportation pipeline is installed.
To achieve a seal between the housing 100 and the hydrogen transport conduit 20, the first flexible seal 200 may be provided within the cavity 101. The first flexible sealing member 200 may be any one of rubber, resin, plastic material, silicone material, or other flexible sealing material. The position of the first flexible seal 200 may be a portion between the upper bottom surface of the housing 100 and the hydrogen transport pipe 20 and a portion between the housing 100 and the hydrogen transport pipe 20 of the lower bottom surface of the housing 100. The first flexible sealing member 200 may be fixedly disposed in the cavity 101 by bonding. The first flexible sealing element 200 may also be provided with a clamping member at a corresponding position of the housing 100, and the clamping member fixes the first flexible sealing element 200 to the cavity 101.
Referring to fig. 2, the flow channel 201 may be disposed at a middle position of the first flexible sealing element 200. The flow passage 201 may have the flow holes 202 arranged at equal intervals. Of course, the flow channel 201 may have the flow holes 202 arranged randomly. The flow holes 202 extend through the first flexible seal 200 to the hydrogen transport conduit 20. The structure of the active sealing mechanism 300 is not particularly limited as long as the active sealing mechanism 300 can detect the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101, and automatically deliver the structural adhesive therein to the flow hole 202 when the hydrogen content in the cavity 101 is greater than a preset value, and finally fill the flow hole 202 between the first flexible sealing element 200 and the hydrogen transport pipe 20.
In this embodiment, the hydrogen pipeline active sealing safety protection device 10 creates an environment capable of restricting hydrogen leakage at a position where hydrogen leakage is likely to occur, and when hydrogen leakage occurs, the active sealing mechanism 300 responds quickly to fill the flow hole 202 with structural sealant, so that the hydrogen pipeline active sealing safety protection device 10 can keep sealing while the internal pressure is continuously increased, thereby preventing hydrogen from escaping.
Referring to fig. 3, in one embodiment, the active sealing mechanism 300 includes a detection control circuit 310 and an actuator assembly 320.
The detection control circuit 310 is disposed in the cavity 101, and is configured to detect a hydrogen content, a gas pressure value, or a gas pressure variation in the cavity 101. The actuating element 320 is electrically connected to the detection control circuit 310 and the flow channel 201, and when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector 311 is greater than a preset value, the detector 311 controls the actuating element 320 to deliver the structural sealant 301 to the flow channel 201 and fill the flow hole 202 through the flow channel 201.
Specifically, the structure of the detection control circuit 310 is not particularly limited, as long as the detection control circuit 310 can detect the hydrogen content, the gas pressure value, or the gas pressure variation in the cavity 101, and control whether the execution assembly 320 starts to operate according to the detection result.
In an alternative embodiment, the detection control circuit 310 may include a sensor and a controller coupled to the sensor. The sensor sends the detection result to the controller. The controller compares the detection result with a preset value, and when the detection result is greater than the preset value, the controller controls the execution assembly 320 to convey the structural sealant 301 to the flow channel 201 and fill the flow hole 202 through the flow channel 201.
In another alternative embodiment, the detection control circuit 310 includes a detector 311 and a relay 312. In an alternative embodiment, the detector 311 is any one of a hydrogen concentration detector, a gas pressure value detector, or a gas pressure change detector. The detector 311 is disposed in the cavity 101, and configured to detect a hydrogen content, a gas pressure value, or a gas pressure variation in the cavity 101. The relay 312 is electrically connected to the detector 311 and the actuator assembly 320. The relay 312, the power source and the actuator 320 form an actuator circuit. When the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector 311 is greater than a preset value, a conducting signal is sent to the relay 312, and after the relay 312 receives the conducting signal, the relay 312 is closed to conduct the execution circuit, so as to control the execution component 320 to start working.
The structure of the actuating member 320 is not particularly limited as long as the actuating member 320 can deliver the structural sealant 301 to the flow channel 201 and fill the flow hole 202 through the flow channel 201.
Referring to fig. 4, in an alternative embodiment, the actuating assembly 320 includes a motor 321, a structural sealant pusher 322, and a structural sealant storage reservoir 323. The motor 321 is electrically connected to the detection control circuit 310. The structural sealant pusher 322 is electrically connected to the motor 321. The structural sealant storage 323 stores the structural sealant 301 therein, and has one end connected to the structural sealant pushing member 322 and the other end connected to the flow channel 201.
Specifically, when the hydrogen content, the gas pressure value, or the gas pressure variation detected by the detector 311 is greater than a preset value, the controller controls the motor 321 to start to rotate, or the relay is closed, and the power supply starts to supply power to the motor 321, so that the motor 321 starts to rotate. In an alternative embodiment, the structural sealant pusher 322 can include a gear set 324 and a threaded rod 325 connected to the gear set 324. The motor 321 rotates to drive the gear set 324 to rotate, and further drive the screw 325 to advance, so that the structural sealant 301 in the structural sealant storage bin 323 is conveyed to the flow channel 201. The structural sealant pusher 322 can also be any other structure that can effect the pushing of the structural sealant 301 in the structural sealant storage 323 to the flow channel 201.
The structural sealant storage silo 323 can comprise two portions. And in part a first reservoir located within the structure of the first flexible seal 200. A thin membrane layer is provided between the first reservoir and the flow channel 201. The diaphragm layer can be made of tough but breakable materials such as rubber and plastics. The other part is a second reservoir from which the first flexible seal 200 extends. A portion of the screw 325 is disposed in the second storage part. The first storage part and the second storage part both contain the structural sealant 301. A thin membrane layer is arranged between the second storage part and the first storage part. The first storage portion is sealed in a case where the motor 321 is not operated. When the screw 325 pushes the structural sealant 301 to advance, the structural sealant 301 extrudes the diaphragm layer between the second storage portion and the first storage portion, and under a certain pressure, the structural sealant 301 located in the second storage portion enters the first storage portion. And under a certain pressure, the structural sealant 301 located in the first storage portion breaks through the diaphragm layer between the first storage portion and the flow channel 201, and then enters the flow channel 201, and fills the flow hole 202 along the flow channel 201, so as to realize the adhesion between the first sealing layer 200 and the hydrogen transportation pipeline 20, and further improve the pressure resistance of the first sealing layer 200, so that the hydrogen pipeline active sealing safety protection device 10 can continuously maintain the sealing while the internal pressure is continuously increased, and further prevent the hydrogen from escaping.
In one embodiment, the active sealing mechanism 300 further includes an alarm 330. The alarm 330 is electrically connected to the detector 311, and sends an alarm signal to the alarm 330 when the hydrogen content, the gas pressure value, or the gas pressure variation detected by the detector 311 is greater than a preset value. In an alternative embodiment, the alarm 330 is a warning light or a buzzer. The alarm 330 may be disposed on an inner wall of the housing 100. The alarm 330 may also be disposed on an outer wall of the housing 100. In an alternative embodiment, the alarm 330 may include a power source, a switching element, and a warning light electrically connected in sequence. The detector 311 may control the on/off of the switch. When the detector 311 reaches a state that the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101 is larger than a preset value, the switch is controlled to be connected, and then the warning light is emitted by the warning lamp.
In this embodiment, the alarm 330 is configured to detect the hydrogen content, the gas pressure value, or the gas pressure variation in the cavity 101, and perform an early warning. The alarm 330 can respond quickly to notify the staff to perform maintenance to prevent a large accumulation of leaking hydrogen.
Referring to fig. 5, in one embodiment, the housing 100 has an opening 102 extending through the housing 100 along the extending direction of the hydrogen transport pipe 20, and the opening 102 is used for placing the hydrogen transport pipe 20 in the cavity 101. In one alternative embodiment, to achieve a seal between the housing 100 and the hydrogen transport conduit 20, the hydrogen pipeline active safety seal guard 10 further comprises a snap 110, a snap ring 120, and a second flexible seal 400.
The buckle 110 is fixedly disposed on an outer sidewall of the housing 100. One end of the snap ring 120 is fixedly disposed on the outer sidewall of the housing 100, the snap ring 120 and the buckle 110 are disposed at two ends of the opening 102 at an interval, and when the other end of the snap ring 120 is buckled to the buckle 110, the opening 102 is closed by pressing the snap ring 120. The second flexible seal 400 is disposed at the opening 102 of the housing 100. The buckle 110 and the snap ring 120 cooperate to fix the hydrogen pipeline active sealing safety device 10 on a pipeline, and press the opening 102 of the housing 100 to close the opening, thereby achieving the sealing effect. The release can also be quick when the device needs to be repaired or replaced.
The second flexible seal 400 is only provided at a different position from the first flexible seal 200. The second flexible seal 400 is also provided with a flow passage 201 and a flow hole 202, which are identical to those of the first flexible seal 200. Also, the active sealing mechanism 300 can deliver the structural sealant 301 into the flowbore 202 on the second flexible seal 400. In an alternative embodiment, the first flexible seal 200 and the second flexible seal 400 may be two separately disposed seals. In one alternative embodiment, the first flexible seal 200 is integrally formed with the second flexible seal 400. The material of the first flexible sealing member 200 and the material of the second flexible sealing member 400 are any one of a rubber material, a resin material, a plastic material, a silicone material, or other flexible sealing materials.
In an alternative embodiment, the hydrogen pipeline active seal safety guard 10 can also achieve the seal between the housing 100 and the hydrogen transportation pipeline 20 through two extension plates and a snap and a clamping groove. Two extension plates may be disposed on both sides of the opening 102. Two extension plates may be integrally formed with the housing 100. The fastener is arranged on one extending plate, the clamping groove is arranged on the other extending plate, and the fastener and the clamping groove are clamped to close the opening in the shell 100.
In this embodiment, the housing 100 has an opening 102 extending through the housing 100 along the direction of extension of the hydrogen transport pipe 20, so that the housing 100 can be detachably mounted without disassembling the hydrogen transport pipe 20.
Referring to fig. 5, in one embodiment, the housing 100 includes a first clamping body 130 and a second clamping body 140.
The first clamping body 130 has a first screw hole 131. The second clamping body 140 has a second screw hole 141. The first flexible sealing member 200 is disposed between the first clamping body 130 and the second clamping body 140. A connector detachably connects the first clamping body 130 and the second clamping body 140 through the second screw hole 141 and the first screw hole 131 to form the cavity between the first clamping body 130 and the second clamping body 140.
Specifically, the first clamping body 130 and the second clamping body 140 may be half shells having the same shape, and when the first clamping body 130 and the second clamping body 140 are butted, the housing 100 is formed. Screw holes are provided at corresponding positions of the first clamping body 130 and the second clamping body 140 so that the two half shells can be detachably connected. The first flexible sealing member 200 may be positioned at both ends of the first clamping body 130 and both ends of the second clamping body 140. Of course, a second flexible sealing member 400 may be provided at a position where the first clamping body 130 and the second clamping body 140 are butted. At this time, a third screw hole 401 is formed at a corresponding position of the second flexible sealing member 400, so that a screw 150 passes through the first screw hole 131, the third screw hole 401 and the second screw hole 141 in sequence to detachably connect the first clamping body 130 and the second clamping body 140. Optionally, the first flexible seal 200 is integrally formed with the second flexible seal 400.
In this embodiment, the housing 100 may be detachably mounted to the housing 100 through the first clamping member 130 and the second clamping member 140 without disassembling the hydrogen transportation pipe 20.
Referring to fig. 7, the present application provides an active sealing safety protection method for a hydrogen pipeline. The hydrogen pipeline active sealing safety protection method is realized by using the hydrogen pipeline active sealing safety protection device 10 in any one of the above embodiments. The active sealing safety protection method for the hydrogen pipeline comprises the following steps:
s10, wrapping the joint of the hydrogen transportation pipe 20 with the shell 100, and disposing the first flexible sealing member 200 between the shell 100 and the hydrogen transportation pipe 20 to form the sealed cavity 101. In step S10, an environment of the cavity 101 with insulation sealing can be achieved by using the housing 100 and the first flexible sealing member 200. The shape and size of the housing 100 are not particularly limited as long as the portion of the hydrogen transport pipe 20 that is susceptible to leakage is secured inside the housing 100. The first flexible seal 200 may be rubber, resin, or other flexible material.
S20, detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity 101 by using the active sealing mechanism 300. In step S20, the structure of the active sealing mechanism 300 is not particularly limited as long as the active sealing mechanism 300 can detect the hydrogen content, the gas pressure value, or the gas pressure variation in the cavity 101, and when the hydrogen content, the gas pressure value, or the gas pressure variation in the cavity 101 is greater than a preset value, automatically deliver the structural adhesive therein to the flow hole 202, and finally fill the flow hole 202 between the first flexible sealing element 200 and the hydrogen transport pipeline 20.
S30, when the active sealing mechanism 300 detects that the hydrogen content, the gas pressure value, or the gas pressure variation in the cavity 101 is greater than a preset value, the active sealing mechanism 300 delivers the structural sealant 301 to the flow channel 201, and fills the flow channel 201 with the flow hole 202 of the flow channel 201. In step S30, the preset value may be arbitrarily set empirically. The active sealing mechanism 300 has a structural sealant 301 therein. The active sealing mechanism 300 is disposed in the cavity 101.
In this embodiment, the hydrogen pipeline active sealing safety protection method creates an environment capable of restricting hydrogen leakage at a position where hydrogen leakage is likely to occur, and when hydrogen leakage occurs, the active sealing mechanism 300 responds quickly to fill the flow hole 202 with structural sealant, so that the hydrogen pipeline active sealing safety protection device 10 can keep sealing while the internal pressure is continuously increased, thereby preventing hydrogen from escaping.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. An active seal safety device for a hydrogen pipeline, comprising:
the hydrogen transportation device comprises a shell (100), wherein a cavity (101) is formed in the shell, a hydrogen transportation pipeline (20) is arranged in the cavity (101), and the shell (100) is detachably connected with the hydrogen transportation pipeline (20);
the first flexible sealing element (200) is arranged between the shell (100) and the hydrogen transportation pipeline (20) so as to form an insulated and sealed environment in the cavity (101), a flow channel (201) is arranged on the contact surface of the first flexible sealing element (200) and the hydrogen transportation pipeline (20), and flow holes (202) are arranged on the flow channel (201) at intervals; and
initiative sealing mechanism (300), inside has structural seal glue (301), set up in cavity (101) are used for detecting hydrogen content, gas pressure value or gas pressure variation in cavity (101), and will structural seal glue (301) carry extremely runner (201), and pass through runner (201) fill in discharge orifice (202).
2. The active seal safety shield of hydrogen gas pipeline according to claim 1, wherein the active seal mechanism (300) comprises:
the detection control circuit (310) is arranged in the cavity (101) and is used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101); and
and the execution assembly (320) is electrically connected with the detection control circuit (310) and is connected with the flow channel (201), and when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector (311) is greater than a preset value, the detector (311) controls the execution assembly (320) to convey the structural sealant (301) to the flow channel (201) and fill the structural sealant (301) in the flow hole (202) through the flow channel (201).
3. The active seal safety shield of hydrogen gas pipeline of claim 2, wherein the actuation assembly (320) comprises:
a motor (321) electrically connected to the detection control circuit (310);
a structural sealant pusher (322) electrically connected to the motor (321); and
and the structural sealant storage bin (323) stores the structural sealant (301), one end of the structural sealant storage bin is connected with the structural sealant pushing piece (322), and the other end of the structural sealant storage bin is connected with the flow channel (201).
4. The active seal safety guard of hydrogen gas pipeline according to claim 3, characterized in that the detection control circuit (310) comprises:
the detector (311) is arranged in the cavity (101) and is used for detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101); and
the relay (312) is electrically connected with the detector (311) and the motor (321) respectively, when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector (311) is greater than a preset value, a conducting signal is sent to the relay (312), and after the relay (312) receives the conducting signal, the relay (312) is closed to control the motor (321) to start working.
5. The active seal safety shield of hydrogen lines of claim 4, wherein the active seal mechanism (300) further comprises:
and the alarm (330) is electrically connected with the detector (311), and sends an alarm signal to the alarm (330) when the hydrogen content, the gas pressure value or the gas pressure variation detected by the detector (311) is greater than a preset value.
6. The active seal safety guard of hydrogen pipeline according to claim 5, characterized in that the detector (311) is any one of a hydrogen concentration detector, a gas pressure value detector or a gas pressure change detector.
7. The active sealing safety device of hydrogen pipelines according to claim 5, characterized in that the alarm (330) is a warning light or a buzzer.
8. The active sealing safety device for hydrogen pipelines according to claim 1, wherein the housing (100) has an opening (102) extending through the housing (100) in the direction of extension of the hydrogen transport pipeline (20), the opening (102) being used for placing the hydrogen transport pipeline (20) in the cavity (101).
9. The active seal safety guard of hydrogen pipeline according to claim 8, further comprising:
the buckle (110) is fixedly arranged on the outer side wall of the shell (100); and
and one end of the clamping ring (120) is fixedly arranged on the outer side wall of the shell (100), the clamping ring (120) and the buckle (110) are arranged at two ends of the opening (102) at intervals, and when the other end of the clamping ring (120) is clamped on the buckle (110), the opening (102) is closed by pressing the clamping ring (120).
10. The active seal safety guard of hydrogen pipeline according to claim 9, further comprising:
the second flexible sealing element (400) is arranged at the opening (102) of the shell (100), the first flexible sealing element (200) and the second flexible sealing element (400) are integrally formed, and the material of the first flexible sealing element (200) and the material of the second flexible sealing element (400) are all any one of rubber materials, resin materials, plastic materials, silica gel materials or other flexible sealing materials.
11. A hydrogen pipeline active sealing safety protection method, which is implemented by using the hydrogen pipeline active sealing safety protection device (10) as claimed in any one of claims 1 to 10, and comprises:
s10, wrapping the joint of the hydrogen transportation pipeline (20) by using a shell (100), and arranging a first flexible sealing member (200) between the shell (100) and the hydrogen transportation pipeline (20) to form a sealed cavity (101);
s20, detecting the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101) by using the active sealing mechanism (300);
s30, when the active sealing mechanism (300) detects that the hydrogen content, the gas pressure value or the gas pressure variation in the cavity (101) is larger than a preset value, the active sealing mechanism (300) conveys the structural sealant (301) to the flow channel (201), and the flow channel (201) is filled in the flow hole (202) on the flow channel (201).
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