CN114484301B - Method for detecting leakage stoppage of coal gas - Google Patents
Method for detecting leakage stoppage of coal gas Download PDFInfo
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- CN114484301B CN114484301B CN202210122136.4A CN202210122136A CN114484301B CN 114484301 B CN114484301 B CN 114484301B CN 202210122136 A CN202210122136 A CN 202210122136A CN 114484301 B CN114484301 B CN 114484301B
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- 239000003034 coal gas Substances 0.000 title description 4
- 238000001514 detection method Methods 0.000 claims abstract description 122
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000005520 cutting process Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 25
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- 239000007789 gas Substances 0.000 abstract description 126
- 239000002737 fuel gas Substances 0.000 abstract description 5
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- 238000010586 diagram Methods 0.000 description 5
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- 239000003345 natural gas Substances 0.000 description 2
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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Abstract
The invention relates to the technical field of gas detection, and in particular provides a gas detection plugging device and a detection plugging method, wherein the device comprises the following components: the valve body is cylindrical, and openings are formed in two ends of the valve body; the flow counting mechanism is arranged on the valve body and is used for detecting the flow of the gas flowing through the valve body; the cutting mechanism is arranged on the valve body and used for closing a gas channel in the valve body to close a gas pipeline, and the cutting mechanism is controlled by an electronic signal; the valve shell is arranged outside the valve body and covers a fuel gas pipeline connected with the valve body on the valve body, and two ends of the valve shell are sealed with the fuel gas pipeline so that a sealed space is formed in the valve shell; the gas detection plugging device disclosed by the embodiment of the invention can be used for rapidly detecting whether the gas pipeline leaks or not and rapidly detecting the pipeline where the leakage point is located.
Description
Technical Field
The invention relates to a gas detection technology, in particular to a gas detection plugging device and a detection plugging method.
Background
Along with the improvement of living standard, coal gas, natural gas, liquefied gas and the like are main fuels of families and factories, and when the coal gas, the natural gas or the liquefied gas is used, a gas pipeline is required to be erected, and the gas pipeline has the risk of leakage in the use process due to the limitation of construction level and materials.
At present, the detection of gas leakage is generally to detect gas molecules with free air through a sensor, the detection mode is that the sensor can detect leaked gas only when the concentration of the gas near the sensor reaches a certain value, the sensor cannot be arranged at a leakage point exactly when the sensor is arranged, and the gas leakage can be detected only when the gas leaks to the nearest sensor, so that certain hysteresis exists, the gas leakage is caused, and the gas waste is caused.
Disclosure of Invention
The invention aims to provide a gas detection plugging method, which aims to solve the problem of detection hysteresis of the existing gas leakage detection device.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a gas detection plugging device, the device comprising:
the valve body is cylindrical, and openings are formed in two ends of the valve body;
the flow counting mechanism is arranged on the valve body and is used for detecting the flow of the gas flowing through the valve body;
the cutting mechanism is arranged on the valve body and used for closing a gas channel in the valve body to close a gas pipeline, and the cutting mechanism is controlled by an electronic signal;
the valve shell is arranged outside the valve body and covers a gas pipeline connected with the valve body on the valve body, and two ends of the valve shell are sealed with the gas pipeline so that a sealed space is formed in the valve shell;
and the leakage detection sensor is arranged in the valve shell and is used for detecting fuel gas.
Further, the cutting mechanism includes:
the baffle plate is arranged in the valve body and is provided with a valve hole for gas to flow through;
the valve rod is connected in the valve body in a sliding way, penetrates through the valve body, and is in sealing connection with the valve body;
the valve core is arranged on the valve rod and used for blocking the valve hole so as to close the valve body;
the pushing assembly is arranged in the valve shell and used for driving the valve rod to slide in the valve body so as to drive the valve core to close or open the valve hole.
Further, the pushing assembly includes:
the elastic piece is arranged at one end of the valve rod and is used for pushing the valve core to be separated from the valve hole;
and the power part is arranged at one end of the valve rod, which is far away from the elastic piece, and is used for pressing the valve core in the valve hole.
Further, the power section includes:
a cam rotatably connected to the valve housing, the cam abutting against an end of the valve stem remote from the elastic member;
the driving motor is fixedly connected in the valve shell and is used for driving the cam to rotate;
the worm is fixedly connected to the output shaft of the driving motor, the worm wheel is fixedly connected to the upper portion of the cam, and the worm is meshed with the worm wheel.
Further, the valve housing includes:
the first shell is arranged outside the valve body, the first shell is in a cylinder shape with openings at two ends, and the outer wall of the valve body is fixedly connected to the inner wall of the valve body;
the second pipe cap is detachably connected to the two ends of the first shell, and a mounting hole matched with the gas pipeline is formed in the axis of the second pipe cap;
and the third sealing ring is arranged in the mounting hole and is used for sealing the second pipe cap and the gas pipeline.
Further, the detection plugging device further comprises:
the first pipe cap is detachably connected to two ends of the valve body and is connected with the valve body through threads;
the tube core is arranged in the first tube cap, penetrates through the first tube cap and is provided with an inner baffle ring, and the tube core is in a cylinder shape with openings at two ends;
the first sealing ring is arranged on the inner wall of the inner baffle ring and the inner wall of the first pipe cap and is used for sealing the pipe core and the valve body;
the second pipe cap and the first pipe cap are of an integrated structure, and ventilation holes are formed between the first pipe cap and the second pipe cap.
Further, the detection plugging device further comprises:
and the alarm module is arranged on the valve body and is electrically connected with the leakage detection sensor.
A method for detecting and plugging, which adopts the gas detection plugging device according to any one of the above steps, comprising the following steps:
acquiring a first flow rate on an input pipeline, a second flow rate on a branch, a third flow rate of a gas utilization device and detection signals of leakage detection sensors on all detection blocking devices;
judging whether the interfaces of the input pipeline, the branch and the gas consuming device have the problem of gas leakage or not based on the acquired first flow, second flow and third flow, and judging whether leakage occurs between the detection plugging device and the gas pipeline or not based on the detection signal of the leakage detection sensor;
and outputting a judging result and cutting off the air supply of the pipeline where the leakage point is located.
Further, the specific steps for judging whether the problem of gas leakage exists include:
when the difference value of the sum of the first flow and the second flow on each branch is smaller than a first preset value, judging that the input pipeline is not leaked;
when the difference value of the sum of the first flow and the second flow on each branch is larger than a first preset value, judging that the input pipeline leaks;
when the difference value between the second flow and the third flow on the same branch is smaller than a second preset value, judging that the branch has no leakage problem;
when the difference value between the second flow and the third flow on the same branch is larger than a second preset value, judging that the branch is leaked;
when the leakage detection sensor detects that the gas concentration exceeds a third preset value, judging that the leakage problem occurs in the detection plugging device where the leakage detection sensor with the detection value exceeding the third preset value is located, otherwise, the leakage problem does not occur in the detection plugging device.
Further, the specific method for cutting off the air supply of the pipeline where the leakage point is located comprises the following steps:
and controlling a cutting mechanism in the detection plugging device positioned at the input end of the pipeline where the leakage point is positioned to close the pipeline where the leakage point is positioned.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. the gas detection plugging device disclosed by the embodiment of the invention detects the gas flow on the gas pipeline by arranging the flow statistics mechanism, judges whether the gas pipeline leaks by comparing the gas flows on the input pipeline and the branch pipeline, and detects whether the joint of the pipeline leaks by the leakage detection sensor.
2. The gas detection plugging device disclosed by the embodiment of the invention also remotely closes the pipeline where the leakage point is located by arranging the cutting mechanism, so that gas leakage is reduced.
3. The gas detection plugging device disclosed by the embodiment of the invention also indicates the pipeline where the leakage point is located by arranging the alarm unit.
3. The gas detection plugging method disclosed by the embodiment of the invention can be used for rapidly detecting whether the gas pipeline leaks or not and rapidly detecting the pipeline where the leakage point is located.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a gas detection plugging device of the present invention.
Fig. 2 is a schematic view of a cam structure in the gas detection plugging device disclosed by the invention.
FIG. 3 is a schematic view of another embodiment of the disclosed gas detection plugging device.
Fig. 4 is a schematic installation diagram of a detection plugging device in the gas detection plugging method disclosed by the invention.
Fig. 5 is an application scenario diagram of the gas detection plugging method disclosed by the invention.
FIG. 6 is a flow chart diagram of the disclosed gas detection plugging method.
FIG. 7 is a block diagram of a disclosed gas detection plugging system.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Example 1
Fig. 1 shows a gas detection plugging device according to an embodiment of the present invention, the device includes:
the valve comprises a valve body 1, wherein the valve body 1 is in a cylinder shape with openings at two ends;
a flow rate statistics mechanism 2 provided on the valve body 1 for detecting the flow rate of the gas flowing through the valve body 1;
the cutting mechanism 3 is arranged on the valve body 1 and is used for closing a gas channel in the valve body 1 to close a gas pipeline, and the cutting mechanism 3 is controlled by an electronic signal;
a valve housing 6 disposed outside the valve body 1, wherein the valve housing 6 covers a gas pipeline connected with the valve body 1 on the valve body 1, and both ends of the valve housing 6 are sealed with the gas pipeline so as to form a sealed space in the valve housing 6;
a leak detection sensor 7 provided in the valve housing 6 for detecting fuel gas;
in this embodiment, as shown in fig. 4, the gas detection plugging device disclosed in this embodiment is installed at an input pipeline of a gas pipeline, at a connection between the input pipeline and a branch, and at a connection between the branch and a gas consumption device, and when the gas detection plugging device works, a first detection plugging device located on the input pipeline detects a gas flow of the input pipeline, a second detection plugging device located at a connection between the input pipeline and the branch detects a gas flow of the input branch, and a third detection plugging device located at a connection between the branch and the gas consumption device detects a gas flow of the gas consumption device, where the following cases are used when judging whether gas leakage occurs:
A. when the sum of the gas flow detected by the first detection plugging device and the gas flow detected by all the second detection plugging devices or the difference value of the sum and the sum is within a preset range, the problem that the input pipeline is not leaked can be judged;
B. when the gas flow detected by the first detection plugging device is greater than the sum of the gas flows detected by all the second detection plugging devices or the difference value of the two gas flows is greater than a preset value, the problem of gas leakage of the input pipeline can be judged at the moment, and at the moment, the gas input of the input pipeline can be cut off by disconnecting the connecting passage of the first detection plugging device and closing the first detection plugging device through the cutting mechanism 3, so that the input pipeline is prevented from continuing to leak;
C. when the gas flow detected by the second detection plugging device and the gas flow detected by the third detection plugging device which are positioned on the same branch are the same or the difference value of the two is in a preset range, the branch can be judged to have no leakage problem;
D. when the gas flow detected by the second detection plugging device positioned on the same branch is greater than the gas flow detected by the third detection plugging device or the difference value between the two is greater than a preset value, the problem of gas leakage of the branch can be judged, and at the moment, the branch can be closed by closing the second detection plugging device;
F. when the gas flow detected by the second detection plugging device and the gas flow detected by the third detection plugging device which are positioned on the same branch are the same or the difference value of the two is in a preset range, and the gas leakage is detected by the leakage detection sensor 7 positioned on the third detection plugging device, the gas leakage can be judged to occur at the connection point between the gas utilization device and the third detection plugging device, and at the moment, the gas input of the gas utilization device is closed by closing the third detection plugging device so as to solve the problem of gas leakage;
in some examples, the valve body 1 is of cast iron construction, and the valve body 1 is machined by casting;
as a preferred embodiment of the present embodiment, the flow rate statistics unit 2 is a detection unit of a turbine flowmeter, and the flow rate statistics unit 2 includes:
a turbine rotatably connected to the inside of the valve body 1;
the speed sensor is fixedly connected to the flow counting mechanism 2 and is used for sensing the rotating speed of the flow counting mechanism 2;
the structure of the flow statistics mechanism 2 may refer to a turbine flowmeter in the prior art, and the working principle thereof is not described herein;
it should be noted that, the flow statistics mechanism 2 may also have other structures, for example, the flow statistics mechanism 2 may have a karman vortex street flow sensor structure;
as a preferred implementation manner in this embodiment, the cutting mechanism 3 includes:
a diaphragm 11 provided in the valve body 1, the diaphragm 11 being provided with a valve hole for gas to flow therethrough;
a valve rod 32 slidably connected to the inside of the valve body 1, wherein the valve rod 32 penetrates through the valve body 1, and the valve rod 32 is in sealing connection with the valve body 1;
a valve core 31 provided on the valve stem 32 for blocking the valve hole to close the valve body 1;
the pushing component is arranged in the valve shell 6 and is used for driving the valve rod 32 to slide in the valve body 1 so as to drive the valve core 31 to close or open a valve hole;
in this embodiment, when the valve body 1 is closed, the valve core 31 is disposed in a valve hole, and the valve core 31 is in sealing connection with the valve hole, in some examples, the valve core 31 is a rubber sheet with a built-in skeleton, and when the valve core 31 is in sealing connection with the valve hole, the valve core 31 is pressed in the valve hole;
the valve rod 32 is a smooth round rod, the valve rod 32 is fixedly connected with the valve core 31, and in some examples, the valve rod 32 is fixedly connected with a framework in the valve core 31 by welding;
as a preferred implementation of this embodiment, the pushing assembly includes:
an elastic member 33 provided at one end of the valve rod 32 for pushing the valve core 31 to be separated from the valve hole;
a power part arranged at one end of the valve rod 32 far away from the elastic piece 33 and used for pressing the valve core 31 in the valve hole;
in this embodiment, when the valve body 1 is closed, the power part pushes the valve rod 32 to slide in the valve core 31, the valve rod 32 drives the valve core 31 to move into the valve hole and compresses the valve core 31 in the valve hole, at this time, the elastic member 33 is in a compressed state, when the valve rod 32 is opened, the power part stops working, and the elastic member 33 pushes the valve rod 32 to move in the valve body 1 under the action of restoring force until the valve core 31 is separated from the valve hole;
in some examples, the elastic member 33 is a compression spring;
preferably, the valve stem 32 is sleeved with a sealing sleeve, which is used for sealing the valve body 1 and the cutting mechanism 3, and in some examples, the sealing sleeve is a copper sleeve;
as another preferred embodiment of the present embodiment, the power section includes:
a cam 34 rotatably connected to the inside of the valve housing 6, the cam 34 abutting against an end of the valve stem 32 remote from the elastic member 33;
a driving motor 35 fixedly connected to the inside of the valve housing 6 for driving the cam 34 to rotate;
the output shaft of the driving motor 35 is fixedly connected with a worm, the upper part of the cam 34 is fixedly connected with a worm wheel, and the worm is meshed with the worm wheel;
when the valve rod 32 is controlled to slide in the valve body 1, the driving motor 35 is electrified, the driving motor 35 drives the cam 34 to rotate through the worm wheel and the worm, and as the elastic piece 33 presses the valve rod 32, one end, far away from the elastic piece 33, of the valve rod 32 is always abutted against the cam 34 when the cam 34 rotates, so that the valve rod 32 slides in the valve body 1;
as shown in fig. 2, the cam 34 is integrally formed with the worm wheel;
it should be noted that the power unit may have other structures, for example, as shown in fig. 3, and the power unit includes:
a magnetic sheet fixedly attached to one end of the valve stem 32 remote from the elastic member 33;
an electromagnet fixedly connected in the valve housing 6, wherein the electromagnet repels the magnetic sheet after being electrified so as to push the valve rod 32 to slide in the valve body 1;
in this embodiment, the electromagnet is fixedly connected to the inside of the valve body 1 by a screw, and the elastic member 33 is fixed to the valve stem 32 by means of gluing or screw fixation;
as still another preferred embodiment of the present embodiment, as shown in fig. 1, the valve housing 6 includes:
a first housing 61 provided outside the valve body 1, wherein the first housing 61 is provided with an opening cylinder shape at two ends, and the outer wall of the valve body 1 is fixedly connected to the inner wall of the valve body 1;
the second pipe cap 62 is detachably connected to two ends of the first shell 61, and a mounting hole matched with the gas pipeline is formed in the axis of the second pipe cap 62;
the third sealing ring 63 is arranged in the mounting hole and is used for sealing the second pipe cap 62 and the gas pipeline;
in this embodiment, the second cap 62 is mounted on the first housing 61 through a threaded connection, when the gas pipeline is mounted, the second cap 62 is first sleeved on the gas pipeline, the third seal ring 63 is in interference fit with the gas pipeline to seal the second cap 62 and the gas pipeline, then the gas pipeline is fixed on the valve body 1, and then the second cap 62 is screwed on the first housing 61, so that a sealed space is formed in the valve housing 6;
in the present embodiment, the provision of the valve housing 6 also prevents dust or moisture from entering the valve housing 6 for reducing corrosion of the valve body 1 and improving the life of the valve body 1;
in some examples, the valve housing 6 is made of engineering plastic.
Example 2
As shown in fig. 1, as a further embodiment of the present invention, this embodiment is different from embodiment 1 in that the detecting plugging device further includes:
in this embodiment, the interface mechanism 5 includes:
a first cap 51 detachably connected to both ends of the valve body 1;
a tube core 52 arranged in the first tube cap 51, wherein the tube core 52 passes through the first tube cap 51 and an inner baffle ring is arranged in the first tube cap 51, and the tube core 52 is in a cylinder shape with openings at two ends;
a first sealing ring 53 provided on the inner wall of the inner baffle ring and the first cap 51 for sealing the die 52 and the valve body 1;
when the gas pipeline is installed, the gas pipeline is connected to the pipe core 52 in a sealing way, and then the first pipe cap 51 is fixed on the valve body 1, so that the first pipe cap 51 presses the pipe core 52 on the valve body 1, and at the moment, the first sealing ring 53 deforms, thereby sealing the valve body 1 and the gas pipeline;
preferably, as shown in fig. 3, the second cap 62 and the first cap 51 are integrally formed, and at this time, the second cap 62 and the die 52 are both made of metal, and the first cap 51 is connected to the valve body 1 by threads; when the second pipe cap 62 and the first pipe cap 51 are in an integrated structure, the first pipe cap 51 can be screwed by screwing the second pipe cap 62, so that the installation efficiency of the valve body 1 is improved;
preferably, ventilation holes are provided between the first pipe cap 51 and the second pipe cap 62 to allow gas leaking from between the valve body 1 and the interface mechanism 5 to enter the valve housing 6.
Example 3
As shown in fig. 1, as a further embodiment of the present invention, this embodiment is different from embodiment 1 in that the detecting plugging device further includes:
the digital display mechanism 4 is used for displaying the flow of the gas in the valve body 1 in real time, and the flow statistics mechanism 2 is electrically connected with the digital display mechanism 4 through a lead;
the alarm module is arranged in the digital display mechanism 4 and is electrically connected with the leakage detection sensor 7;
in this embodiment, the digital display mechanism 4 is in the prior art, and will not be described herein, and the digital display mechanism 4 may refer to a digital display structure in the prior art;
the alarm module is of an audible and visual alarm structure, the alarm module is electrically connected with the leakage detection sensor 7 through a wire, and when the leakage detection sensor 7 contacts fuel gas, the alarm module sends out audible and visual alarm information, so that a user is reminded.
Example 4
As shown in fig. 6, the invention also discloses a method for detecting plugging, which is based on the gas detection plugging device in any one of embodiments 1 to 3, and comprises the following steps:
s100, acquiring a first flow rate on an input pipeline, a second flow rate on a branch, a third flow rate of a gas utilization device and detection signals of leakage detection sensors 7 on all detection blocking devices;
specifically, in this embodiment, the gas detection plugging device disclosed in any one of embodiments 1 to 3 is installed at an input pipeline of a gas pipeline, at a connection between the input pipeline and a branch, and at a connection between the branch and a gas consuming device, where the first flow is a gas flow detected by a first detection plugging device located on the input pipeline, the second flow is a gas flow detected by a second detection plugging device located at a connection between the input pipeline and the branch, and the third flow is a gas flow detected by a third detection plugging device located at a connection between the branch and the gas consuming device;
when the first flow, the second flow and the third flow are obtained, the detection signals of the flow statistics mechanism 2 are obtained by connecting the flow statistics mechanism 2 positioned on the detection plugging device, and the first flow, the second flow and the third flow are obtained by the detection signals of the flow statistics mechanism 2.
S200, judging whether the interfaces of the input pipeline, the branch and the gas consuming device have the problem of gas leakage or not based on the acquired first flow, second flow and third flow, and judging whether leakage occurs between the detection plugging device and the gas pipeline or not based on the detection signal of the leakage detection sensor 7;
specifically, when the difference value of the sum of the first flow and the second flow on each branch is smaller than a first preset value, judging that the input pipeline is not leaked;
when the difference value of the sum of the first flow and the second flow on each branch is larger than a first preset value, judging that the input pipeline leaks;
when the difference value between the second flow and the third flow on the same branch is smaller than a second preset value, judging that the branch has no leakage problem;
when the difference value between the second flow and the third flow on the same branch is larger than a second preset value, judging that the branch is leaked;
when the leakage detection sensor 7 detects that the gas concentration exceeds a third preset value, the leakage detection sensor 7 judges that the leakage of the detection plugging device where the detection value exceeds the third preset value occurs, otherwise, the leakage of the detection plugging device does not occur.
S300, outputting a judging result and cutting off air supply of a pipeline where the leakage point is located;
specifically, when the leakage problem is judged, a closing signal is sent to close the pipeline where the leakage point is located by a cutting mechanism 3 in the detection plugging device positioned at the input end of the pipeline where the leakage point is located;
for example, when it is judged that the input pipe is leaking, a closing signal is sent to the shut-off mechanism 3 located in a first detection plugging device on the input pipe, which closes the gas input on the input pipe to reduce the leakage;
when judging that the branch has leakage problem, sending a closing signal to the cutting mechanism 3 in the second detection plugging device of the connection point of the branch and the input pipeline, and closing the gas input on the branch by the second detection plugging device to reduce leakage;
as a preferred implementation manner in this embodiment, step S300 further includes:
starting an alarm module on the detection plugging device at two ends of the pipeline where the leakage occurrence point is located;
specifically, when a certain gas pipeline is detected to leak, for example, a branch pipeline leaks, alarm simulation on a second detection plugging device and a third detection plugging device on the branch pipeline is started to send out alarm information, so that the leaked gas pipeline is pointed out;
as shown in fig. 5, in an application scenario of the leak detection method disclosed in this embodiment, the leak detection device is connected to a control center through a network, where the control center may be a server or a server cluster, and a processor, a communication port, a memory, and the like are disposed in the server, and the leak detection method is stored in the memory and runs in the processor.
Example 5
As shown in fig. 7, the present invention further discloses a gas detection plugging system, the system 400 includes:
detecting a plugging device;
the obtaining unit 500 is configured to obtain the first flow, the second flow, the third flow, and detect a concentration of the gas in the plugging device;
a judging unit 600 for judging the position of the leakage point;
the control unit 700 is used for outputting a judging result and cutting off air supply of a pipeline where the leakage point is located and controlling the detection leakage stopping device;
in some examples, the acquiring unit 500 may be a data acquisition card or a data acquisition program, and the acquiring unit 500 acquires the first flow rate, the second flow rate, the third flow rate, and the gas concentration on the detection plugging device by connecting the flow rate statistics mechanism 2 and the leak detection sensor 7;
the judging unit 600 is a program or an application server, and the acquiring unit 500 is connected with the judging unit 600 through a network;
in some examples, the network may be a wired network or a wireless network;
the control unit 700 may be a program or an intelligent terminal.
Example 6
The invention also discloses a storage medium storing a computer program which, when executed by a processor, causes the processor to execute the steps of the method for detecting lost circulation described in embodiment 4.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data.
Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer readable media, as defined herein, does not include non-transitory computer readable media (transmission media), such as modulated data signals and carrier waves.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The method for detecting and plugging the gas is applied to a gas pipeline, and is characterized in that the gas pipeline comprises an input pipeline, a branch and a gas utilization device, and the method comprises the following steps:
installing a gas detection plugging device at the input pipeline, at the connection of the input pipeline and the branch and at the connection of the branch and the gas utilization device;
the control center judges whether the input pipeline, the branch and the interfaces of the branch and the gas utilization device have the problem of gas leakage or not based on the acquired first flow, second flow and third flow, and judges whether leakage occurs between the detection plugging device and the gas pipeline or not based on detection signals of the leakage detection sensor;
outputting a judging result and controlling the cutting mechanism to cut off the air supply of the pipeline where the leakage point is located;
the judging whether the gas leakage exists or not comprises the following steps:
when the difference value of the sum of the first flow and the second flow on each branch is smaller than a first preset value, judging that the input pipeline is not leaked;
when the difference value of the sum of the first flow and the second flow on each branch is larger than a first preset value, judging that the input pipeline leaks;
when the difference value between the second flow and the third flow on the same branch is smaller than a second preset value, judging that the branch has no leakage problem;
when the difference value between the second flow and the third flow on the same branch is larger than a second preset value, judging that the branch is leaked;
when the leakage detection sensor detects that the gas concentration exceeds a third preset value, judging that the leakage problem occurs in the detection plugging device where the leakage detection sensor with the detection value exceeding the third preset value is located, otherwise, the leakage problem does not occur in the detection plugging device;
wherein, the gas detection plugging device includes:
the input pipeline, the branch and the air utilization device are communicated through the valve body;
the flow statistics mechanism is used for acquiring the gas flow flowing through the gas detection plugging device so as to acquire the first flow on the input pipeline, the second flow of each branch and the third flow of the gas utilization device and sending the first flow, the second flow and the third flow to the control center;
the cutting mechanism is arranged on the valve body and used for closing a gas channel in the valve body to close a gas pipeline, and the cutting mechanism is controlled by an electronic signal;
the valve shell is arranged outside the valve body and covers a gas pipeline connected with the valve body on the valve body, and two ends of the valve shell are sealed with the gas pipeline so that a sealing space is formed in the valve shell;
the leakage detection sensor is arranged in the valve shell and is used for detecting gas leakage at the interface of the gas pipeline and the valve body and sending the gas leakage to the control center;
the cutting mechanism includes:
the baffle plate is arranged in the valve body and is provided with a valve hole for gas to flow through;
the valve rod is connected in the valve body in a sliding way, penetrates through the valve body, and is in sealing connection with the valve body;
the valve core is arranged on the valve rod and used for blocking the valve hole so as to close the valve body;
the pushing assembly is arranged in the valve shell and is used for driving the valve rod to slide in the valve body so as to drive the valve core to close or open the valve hole;
the pushing assembly includes:
the elastic piece is arranged at one end of the valve rod and is used for pushing the valve core to be separated from the valve hole;
the power part is arranged at one end of the valve rod, which is far away from the elastic piece, and is used for pressing the valve core in the valve hole;
the power section includes:
a cam rotatably connected to the valve housing, the cam abutting against an end of the valve stem remote from the elastic member;
the driving motor is fixedly connected in the valve shell and is used for driving the cam to rotate;
the worm is fixedly connected to the output shaft of the driving motor, the worm wheel is fixedly connected to the upper portion of the cam, and the worm is meshed with the worm wheel.
2. The gas detection plugging method of claim 1, wherein said valve housing comprises:
the first shell is arranged outside the valve body, the first shell is in a cylinder shape with openings at two ends, and the outer wall of the valve body is fixedly connected to the inner wall of the valve body;
the second pipe cap is detachably connected to the two ends of the first shell, and a mounting hole matched with the gas pipeline is formed in the axis of the second pipe cap;
and the third sealing ring is arranged in the mounting hole and is used for sealing the second pipe cap and the gas pipeline.
3. The gas detection plugging method of claim 2, wherein the detection plugging device further comprises:
the first pipe cap is detachably connected to two ends of the valve body and is connected with the valve body through threads;
the tube core is arranged in the first tube cap, penetrates through the first tube cap and is provided with an inner baffle ring, and the tube core is in a cylinder shape with openings at two ends;
the first sealing ring is arranged on the inner wall of the inner baffle ring and the inner wall of the first pipe cap and is used for sealing the pipe core and the valve body;
the second pipe cap and the first pipe cap are of an integrated structure, and ventilation holes are formed between the first pipe cap and the second pipe cap.
4. A gas detection plugging method according to any one of claims 1-3, wherein said detection plugging device further comprises:
and the alarm module is arranged on the valve body and is electrically connected with the leakage detection sensor.
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| CN202210122136.4A CN114484301B (en) | 2022-02-09 | 2022-02-09 | Method for detecting leakage stoppage of coal gas |
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| CN202210122136.4A CN114484301B (en) | 2022-02-09 | 2022-02-09 | Method for detecting leakage stoppage of coal gas |
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| CN114484301B true CN114484301B (en) | 2023-06-20 |
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| JP2000260449A (en) * | 1999-03-08 | 2000-09-22 | Sanyo Electric Co Ltd | Flow passage breaker and fuel flow passage breaker for fuel cell |
| JP5115808B2 (en) * | 2008-05-15 | 2013-01-09 | 矢崎エナジーシステム株式会社 | Gas shut-off valve unit |
| CN101413628A (en) * | 2008-11-26 | 2009-04-22 | 哈尔滨工业大学 | Method for performing gas pipeline leakage position by using instant change on-line diagnosis coupling excitation frequency response |
| CN204358111U (en) * | 2014-11-19 | 2015-05-27 | 乐山恒力阀门有限责任公司 | A kind of gas emergency cut-off valve |
| CN205639785U (en) * | 2016-04-27 | 2016-10-12 | 浙江新海阀门制造有限公司 | Novel quick action emergency valve |
| CN205806946U (en) * | 2016-07-05 | 2016-12-14 | 浙江艾克米信息科技有限公司 | A kind of kitchen fuel gas conveying anti-leak detection device |
| CN206221683U (en) * | 2016-10-19 | 2017-06-06 | 武汉鼎业环保工程技术有限公司 | A kind of soft sealer |
| CN108386726A (en) * | 2018-03-28 | 2018-08-10 | 安徽华菱汽车有限公司 | A kind of detection device and method of pipe leakage |
| CN108488456A (en) * | 2018-05-18 | 2018-09-04 | 吴亚琴 | A kind of alarm of family gas leak detection and control device |
| CN108986416A (en) * | 2018-09-18 | 2018-12-11 | 深圳市泰燃智能科技有限公司 | A kind of gas safe intelligence prevention system |
| CN212360974U (en) * | 2020-04-15 | 2021-01-15 | 长青热能科技(中山)有限公司 | Valve body with positioning function and supervisory system applying valve body |
| CN113357549B (en) * | 2021-06-02 | 2022-10-21 | 江南造船(集团)有限责任公司 | Method for detecting leakage of double-wall pipe in engine room |
| CN215294593U (en) * | 2021-07-22 | 2021-12-24 | 李立辉 | Gas leakage detection device |
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Address after: 430000 room 1, floor 1, building 3, international enterprise center, No. 1, Guanshan Second Road, Wuhan East Lake High Tech Park, Wuhan, Hubei Province Patentee after: Wuhan Dingye Environmental Protection Technology Group Co.,Ltd. Address before: 430074 Room 101, block B, Dingye building, phase 3, international enterprise center, Donghu high tech Development Zone, Wuhan City, Hubei Province Patentee before: WUHAN DINGYE ENVIRONMENTAL PROTECTION ENGINEERING TECHNOLOGY CO.,LTD. |
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Denomination of invention: A Gas Detection and Sealing Method Granted publication date: 20230620 Pledgee: Agricultural Bank of China Limited Hubei pilot Free Trade Zone Wuhan Area Branch Pledgor: Wuhan Dingye Environmental Protection Technology Group Co.,Ltd. Registration number: Y2024980005691 |