CN114484301A - Gas detection and leakage stoppage device and method - Google Patents
Gas detection and leakage stoppage device and method Download PDFInfo
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- CN114484301A CN114484301A CN202210122136.4A CN202210122136A CN114484301A CN 114484301 A CN114484301 A CN 114484301A CN 202210122136 A CN202210122136 A CN 202210122136A CN 114484301 A CN114484301 A CN 114484301A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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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 particularly provides a gas detection leakage stoppage device and a detection leakage stoppage method, wherein the device comprises: the valve body is in a cylindrical shape, and openings are formed in two ends of the valve body; the flow counting mechanism is arranged on the valve body and used for detecting the gas flow passing through the valve body; the cut-off mechanism is arranged on the valve body and used for closing a gas channel in the valve body so as to close a gas pipeline, and the cut-off 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; the gas detection plugging device disclosed by the embodiment of the invention can quickly detect whether a gas pipeline leaks or not and quickly detect the pipeline where a leakage point is located.
Description
Technical Field
The invention relates to a gas detection technology, in particular to a gas detection leakage stoppage device and a detection leakage stoppage method.
Background
With the improvement of living standard, gas, natural gas, liquefied gas and the like are main fuels of families and factories, and gas pipelines need to be erected when the gas, the natural gas or the liquefied gas is used, and due to the limitation of construction level and materials, the gas pipelines have the risk of leakage in the use process.
At present, the leakage of gas is generally detected by a sensor through free gas molecules in air, the sensor can detect the leaked gas only when the concentration of the gas near the sensor reaches a certain numerical value, the sensor cannot be arranged at a leakage point exactly when being arranged, when the gas leakage occurs, the gas leakage can be detected only when the gas is spread to the nearest sensor, certain hysteresis exists, so that the gas leakage stoppage has hysteresis, and the waste of the gas is caused.
Disclosure of Invention
The invention aims to provide a gas detection leakage stopping device and a detection leakage stopping method, which aim to solve the problem of detection hysteresis of the conventional gas leakage detection device.
In order to achieve the purpose, the invention provides the following technical scheme:
a gas detection plugging device, the device comprising:
the valve body is in a cylindrical shape, and openings are formed in two ends of the valve body;
the flow counting mechanism is arranged on the valve body and used for detecting the gas flow passing through the valve body;
the cutting mechanism is arranged on the valve body and used for closing a gas channel in the valve body so as to close a gas pipeline, and the cutting mechanism is controlled by an electronic signal;
the valve shell is arranged outside the valve body, the valve shell 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 gas.
Further, the cutting mechanism includes:
the partition 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 mode, penetrates through the valve body, and is connected with the valve body in a sealing mode;
the valve core is arranged on the valve rod and used for blocking the valve hole so as to close the valve body;
and 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 comprises:
the elastic piece is arranged at one end of the valve rod and 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 part, and is used for pressing the valve core in the valve hole.
Further, the power section includes:
rotating a cam connected in the valve shell, wherein the cam abuts against one end, far away from the elastic piece, of the valve rod;
the driving motor is fixedly connected in the valve shell and is used for driving the cam to rotate;
the output shaft of the driving motor is fixedly connected with a worm, the cam is fixedly connected with a worm wheel, and the worm is meshed with the worm wheel.
Further, the valve housing includes:
the first shell is arranged outside the valve body, the two ends of the first shell are provided with opening cylinders, and the outer wall of the valve body is fixedly connected to the inner wall of the valve body;
the second pipe caps are detachably connected to two ends of the first shell, and mounting holes matched with the gas pipelines are formed in the axis of the second pipe caps;
and the third sealing ring is arranged in the mounting hole and used for sealing the second pipe cap and the gas pipeline.
Further, the detection plugging device further comprises:
the first pipe caps are detachably connected to two ends of the valve body and are in threaded connection with the valve body;
the tube core is arranged in the first tube cap, penetrates through the first tube cap and is internally provided with an inner retaining ring, and the tube core is in a cylindrical shape with openings at two ends;
the first sealing ring is arranged on 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 a vent hole is formed between the first pipe cap and the second pipe cap.
Further, the detection plugging device further comprises:
locate alarm module on the valve body, alarm module with leak detection sensor electric connection.
A method for detecting and plugging coal gas comprises the following steps:
acquiring a first flow on an input pipeline, a second flow on a branch, a third flow of a gas using device and detection signals of leakage detection sensors on all the detection blocking devices;
judging whether the input pipeline, the branch and the interface of the branch and the gas using device have the problem of gas leakage or not based on the acquired first flow, second flow and third flow, and judging whether the leakage is generated between the detection plugging device and the gas pipeline or not based on a detection signal of the leakage detection sensor;
and outputting a judgment result and cutting off the air supply of the pipeline where the leakage point is located.
Further, the specific step of judging whether the problem of gas leakage exists includes:
when the difference value of the first flow and the sum of the second flows on each branch is smaller than a first preset value, judging that the input pipeline does not leak;
when the difference value of the first flow and the sum of the second flows 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 does not have the 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 has a leakage problem;
when the leakage detection sensor detects that the gas concentration exceeds a third preset value, the leakage detection device where the leakage detection sensor with the detection value exceeding the third preset value is located is judged to have the leakage problem, otherwise, the leakage problem of the leakage detection device is not detected.
Further, the specific method for cutting off the gas supply of the pipeline where the leakage point is located comprises the following steps:
and controlling a cutting mechanism in the detection leakage stopping device at the input end of the pipeline where the leakage point is located to close the pipeline where the leakage point is located.
In conclusion, compared with the prior art, the invention has the following beneficial effects:
1. compared with the prior art, the gas detection leakage stopping device disclosed by the embodiment of the invention can quickly detect whether the gas pipeline leaks and quickly detect the pipeline where the leakage point is located.
2. The gas detection leakage stopping device disclosed by the embodiment of the invention also remotely closes a pipeline where a leakage point is located by arranging the cutting mechanism, so that the gas leakage is reduced.
3. The gas detection leakage stoppage device disclosed by the embodiment of the invention also points out the pipeline where the leakage point is located by arranging the alarm unit.
3. The gas detection and leakage stoppage 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 structural diagram of one embodiment of a gas detection plugging device disclosed by the invention.
Fig. 2 is a schematic structural diagram of a cam in the gas detection leakage-blocking device disclosed by the invention.
Fig. 3 is a schematic structural diagram of another embodiment of the gas detection plugging device disclosed by the invention.
FIG. 4 is a schematic view of the installation of the leak detection device in the gas detection leak-stopping method disclosed in the invention.
FIG. 5 is an application scene diagram of the gas leakage detection method disclosed by the invention.
FIG. 6 is a flow chart of a gas leak detection method disclosed by the invention.
Fig. 7 is a structural block diagram of the gas detection plugging system disclosed by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention are within the scope of protection of the present invention without any creative efforts.
Example 1
Fig. 1 shows that, according to an embodiment of the present invention, there is provided a gas detection leakage blocking device, including:
the valve body 1 is a cylindrical valve body 1, and openings are formed in two ends of the cylindrical valve body 1;
the flow rate statistical mechanism 2 is arranged on the valve body 1 and is used for detecting the flow rate of the fuel gas flowing through the valve body 1;
the cut-off mechanism 3 is arranged on the valve body 1 and is used for closing a gas channel in the valve body 1 so as to close a gas pipeline, and the cut-off mechanism 3 is controlled by an electronic signal;
the valve shell 6 is arranged outside the valve body 1, the valve shell 6 covers a gas pipeline connected with the valve body 1 on the valve body 1, and two ends of the valve shell 6 are sealed with the gas pipeline so that a sealed space is formed in the valve shell 6;
a leak detection sensor 7 provided in the valve housing 6 for detecting gas;
in this embodiment, as shown in fig. 4, the gas detection leakage blocking device disclosed in this embodiment is installed at an input pipeline of a gas pipeline, a connection between an input pipeline and a branch, and a connection between a branch and a gas using device, when the gas detection leakage blocking device works, a first detection leakage blocking device located on the input pipeline detects a gas flow rate of the input pipeline, a second detection leakage blocking device located at a connection between the input pipeline and a branch detects a gas flow rate on the input branch, a third detection leakage blocking device located at a connection between the branch and the gas using device detects a gas flow rate of the gas using device, and when it is determined whether a gas leakage occurs, the following cases are divided:
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 is the same or the difference value of the two gas flow is within a preset range, the problem that the input pipeline has no leakage can be judged;
B. when the gas flow detected by the first detection plugging device is larger than the sum of the gas flows detected by all the second detection plugging devices or the difference value between the gas flows detected by the second detection plugging devices is larger than a preset value, the problem of gas leakage of the input pipeline can be judged, 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 continuously leaking;
C. when the gas flow detected by the second detection plugging device and the gas flow detected by the third detection plugging device in the same branch are the same or the difference value of the two is within a preset range, the problem of leakage of the branch can be judged;
D. when the gas flow detected by the second detection plugging device positioned in the same branch is larger than the gas flow detected by the third detection plugging device or the difference value of the two is larger 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 gas flow detected by the second detection plugging device and the gas flow detected by the third detection plugging device is in a preset range, and the gas leakage is detected by a leakage detection sensor 7 positioned on the third detection plugging device, the gas leakage at the connecting point between the gas device and the third detection plugging device can be judged, and at the moment, the gas input of the gas 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 a cast iron structure, and the valve body 1 is processed by casting;
as a preferred embodiment of the present invention, the flow rate statistic means 2 is a detection means of a turbine flowmeter, and the flow rate statistic means 2 includes:
a turbine rotatably connected in the valve body 1;
the speed sensor is fixedly connected to the flow statistic mechanism 2 and used for sensing the rotating speed of the flow statistic mechanism 2;
the structure of the flow statistical mechanism 2 can refer to a turbine flowmeter in the prior art, and the working principle of the turbine flowmeter is not repeated herein;
it should be noted that the flow statistic mechanism 2 may also have other structures, for example, the flow statistic mechanism 2 may have a karman vortex street flow sensor structure;
as a preferred embodiment of the present embodiment, the cutting mechanism 3 includes:
the partition plate 11 is arranged in the valve body 1, and the partition plate 11 is provided with a valve hole for gas to flow through;
the valve rod 32 is connected in the valve body 1 in a sliding mode, the valve rod 32 penetrates through the valve body 1, and the valve rod 32 is connected with the valve body 1 in a sealing mode;
a valve core 31 provided on the valve rod 32 for blocking the valve hole to close the valve body 1;
the pushing assembly is arranged in the valve shell 6 and 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 the present embodiment, when the valve body 1 is closed, the valve core 31 is disposed in the valve hole, and the valve core 31 is in sealed 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 sealed 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 embodiment in 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 out of the valve hole;
the power part is arranged at one end of the valve rod 32 far away from the elastic piece 33 and is 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 press 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 rod 32 is sleeved with a sealing sleeve, and the sealing sleeve 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 preferable example in the present embodiment, the power section includes:
rotating a cam 34 connected in the valve housing 6, wherein the cam 34 abuts on one end of the valve rod 32 far away from the elastic piece 33;
the driving motor 35 is fixedly connected in the valve shell 6 and is used for driving the cam 34 to rotate;
a worm is fixedly connected to an output shaft of the driving motor 35, a worm wheel is fixedly connected to the cam 34, 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 a worm wheel and a worm, because the elastic piece 33 presses the valve rod 32, when the cam 34 rotates, one end of the valve rod 32 far away from the elastic piece 33 is always abutted on the cam 34, and therefore the valve rod 32 slides in the valve body 1;
as shown in fig. 2, the cam 34 is of an integral structure with the worm gear;
the power unit may have another structure, for example, as shown in fig. 3, the power unit includes:
a magnetic sheet fixedly connected to one end of the valve rod 32 far away from the elastic member 33;
the electromagnet is fixedly connected in the valve shell 6 and repels a magnetic sheet after being electrified so as to push the valve rod 32 to slide in the valve body 1;
in the present embodiment, the electromagnet is fixedly connected to the valve body 1 by screws, and the elastic member 33 is fixed to the valve rod 32 by gluing or screwing;
as still another preferred embodiment in this embodiment, as illustrated in fig. 1, the valve housing 6 includes:
the first shell 61 is arranged outside the valve body 1, the two ends of the first shell 61 are provided with opening cylinders, and the outer wall of the valve body 1 is fixedly connected to the inner wall of the valve body 1;
the second pipe caps 62 are detachably connected to two ends of the first shell 61, and mounting holes matched with gas pipelines are formed in the axis of the second pipe caps 62;
the third sealing ring 63 is arranged in the mounting hole and used for sealing the second pipe cap 62 and the gas pipeline;
in this embodiment, the second pipe cap 62 is installed on the first housing 61 through a threaded connection, when a gas pipeline is installed, the second pipe cap 62 is firstly sleeved on the gas pipeline, the third sealing ring 63 is in interference fit with the gas pipeline to seal the second pipe cap 62 and the gas pipeline, then the gas pipeline is fixed on the valve body 1, and then the second pipe cap 62 is screwed on the first housing 61, so that a sealed space is formed in the valve housing 6;
in this embodiment, the facilities of the valve housing 6 can also prevent dust or moisture from entering the valve housing 6, so as to reduce corrosion of the valve body 1 and improve the service 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, this embodiment is different from embodiment 1 in that, as a further embodiment of the present invention, the leak detection device further includes:
the interface mechanisms 5 are arranged at the two ends of the valve body 1 and are used for sealing the valve body 1 and a gas pipeline;
in the present embodiment, the interface mechanism 5 includes:
the tube core 52 is arranged in the first tube cap 51, the tube core 52 penetrates through the first tube cap 51, an inner retaining ring is arranged in the first tube cap 51, and the tube core 52 is in a cylindrical shape with openings at two ends;
the first sealing ring 53 is arranged on the inner blocking ring and the inner wall of the first pipe cap 51 and is used for sealing the pipe core 52 and the valve body 1;
when a gas pipeline is installed, the gas pipeline is hermetically connected to the pipe core 52, then the first pipe cap 51 is fixed on the valve body 1, so that the pipe core 52 is pressed on the valve body 1 by the first pipe cap 51, and at the moment, the first sealing ring 53 is deformed, so that the valve body 1 and the gas pipeline are sealed;
preferably, as shown in fig. 3, the second cap 62 and the first cap 51 are of an integral structure, in this case, the second cap 62 and the core 52 are both made of metal, and the first cap 51 is connected to the valve body 1 by a thread; when the second pipe cap 62 and the first pipe cap 51 are of an integral 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, a vent hole is formed between the first pipe cap 51 and the second pipe cap 62 to allow gas leaked from between the valve body 1 and the interface mechanism 5 to enter the valve housing 6.
Example 3
As shown in fig. 1, this embodiment is different from embodiment 1 in that, as a further embodiment of the present invention, the leak detection 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 statistic mechanism 2 is electrically connected with the digital display mechanism 4 through a conducting wire;
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 the prior art, and is not described herein again, and the digital display mechanism 4 may refer to a digital display structure in the prior art;
the alarm module is of a sound-light alarm structure and is electrically connected with the leakage detection sensor 7 through a wire, and when the leakage detection sensor 7 is in contact with gas, the alarm module sends out sound-light alarm information to remind a user.
Example 4
As shown in fig. 6, the invention also discloses a leak detection method based on the gas leak detection device according to any one of embodiments 1 to 3, the method including:
s100, acquiring a first flow on an input pipeline, a second flow on a branch, a third flow of a gas using device and detection signals of leakage detection sensors 7 on all detection blocking devices;
specifically, in this embodiment, the gas detection and leakage stoppage device disclosed in any one of embodiments 1 to 3 is installed at an input pipeline of a gas pipeline, a connection between the input pipeline and a branch, and a connection between the branch and a gas using device, where the first flow rate is a gas flow rate detected by a first detection and leakage stoppage device located on the input pipeline, the second flow rate is a gas flow rate detected by a second detection and leakage stoppage device located at the connection between the input pipeline and the branch, and the third flow rate is a gas flow rate detected by a third detection and leakage stoppage device located at the connection between the branch and the gas using device;
when the first flow, the second flow and the third flow are obtained, the detection signals of the flow statistical mechanism 2 are obtained by connecting the flow statistical mechanism 2 positioned on the detection leakage stopping device, and the first flow, the second flow and the third flow are obtained by the detection signals of the flow statistical mechanism 2.
S200, judging whether the input pipeline, the branch and the interface of the branch and the gas using device have the problem of gas leakage or not based on the acquired first flow, second flow and third flow, and judging whether the leakage between the detection leakage stopping device and the gas pipeline occurs or not based on a detection signal of the leakage detection sensor 7;
specifically, when the difference value between the first flow and the sum of the second flows on each branch is smaller than a first preset value, it is judged that the input pipeline does not leak;
when the difference value of the first flow and the sum of the second flows 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 does not have the 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 has a leakage problem;
when the gas concentration detected by the leakage detection sensor 7 exceeds a third preset value, the leakage problem of the detection plugging device where the leakage detection sensor 7 with the detection value exceeding the third preset value is located is judged, otherwise, the leakage problem of the plugging device is not detected.
S300, outputting a judgment result and cutting off gas supply of a pipeline where a leakage point is located;
specifically, when a leakage problem is judged, a closing signal is sent to a cutting mechanism 3 in the detection leakage stopping device at the input end of the pipeline where the leakage point is located so as to close the pipeline where the leakage point is located;
for example, when the input pipeline is judged to leak, a closing signal is sent to the cut-off mechanism 3 in the first detection leakage stopping device positioned on the input pipeline, and the first detection leakage stopping device closes the gas input on the input pipeline to reduce the leakage;
when the leakage problem of the branch is judged, a closing signal is sent to the cutting mechanism 3 in the second detection plugging device at the connection point of the branch and the input pipeline, and the second detection plugging device closes the gas input on the branch to reduce the leakage;
as a preferred implementation manner in this embodiment, step S300 further includes:
starting alarm modules on the detection leakage stopping devices positioned at two ends of the pipeline where the leakage generating point is positioned;
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 alarm information, so that the leaked gas pipeline is pointed out;
as shown in fig. 5, in an application scenario of the method for detecting plugging disclosed in this embodiment, the plugging detection device is connected to a control center through a network, where the control center may be a server or a server cluster, a processor, a communication port, a memory, and the like are disposed in the server, and the method for detecting plugging is stored in the memory and operated in the processor.
Example 5
As shown in fig. 7, the present invention also discloses a gas detection plugging system, wherein the system 400 comprises:
detecting the plugging device;
an obtaining unit 500, configured to obtain the first flow rate, the second flow rate, and the third flow rate, and detect a gas concentration 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 judgment result, cutting off air supply of a pipeline where a leakage point is located and controlling the detection leakage plugging 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 detects the gas concentration in the plugging device by connecting the flow rate statistic mechanism 2 and the leak detection sensor 7;
the determining unit 600 is a segment of program or application server, and the acquiring unit 500 is connected to the determining 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 leak detection method described in embodiment 4.
In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
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 computer storage media 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, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include non-transitory computer readable media (transient media), such as modulated data signals and carrier waves.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A gas detection plugging device is characterized by comprising:
the valve body is in a cylindrical shape, and openings are formed in two ends of the valve body;
the flow counting mechanism is arranged on the valve body and used for detecting the gas flow passing through the valve body;
the cut-off mechanism is arranged on the valve body and used for closing a gas channel in the valve body so as to close a gas pipeline, and the cut-off 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 used for detecting gas.
2. The gas detection plugging device according to claim 1, wherein said shut-off mechanism comprises:
the partition 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 mode, penetrates through the valve body, and is connected with the valve body in a sealing mode;
the valve core is arranged on the valve rod and used for blocking the valve hole so as to close the valve body;
and 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.
3. The gas detection leak stoppage device according to claim 2, wherein said urging assembly includes:
the elastic piece is arranged at one end of the valve rod and 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 part, and is used for pressing the valve core in the valve hole.
4. The gas detection plugging device according to claim 3, wherein said power portion comprises:
rotating a cam connected in the valve shell, wherein the cam abuts against one end, far away from the elastic piece, of the valve rod;
the driving motor is fixedly connected in the valve shell and is used for driving the cam to rotate;
the output shaft of the driving motor is fixedly connected with a worm, the cam is fixedly connected with a worm wheel, and the worm is meshed with the worm wheel.
5. The gas detection leak stopping device according to any one of claims 1 to 4, wherein said valve housing comprises:
the first shell is arranged outside the valve body, the two ends of the first shell are provided with opening cylinders, and the outer wall of the valve body is fixedly connected to the inner wall of the valve body;
the second pipe caps are detachably connected to two ends of the first shell, and mounting holes matched with the gas pipeline are formed in the axis of each second pipe cap;
and the third sealing ring is arranged in the mounting hole and used for sealing the second pipe cap and the gas pipeline.
6. The gas detection plugging device according to claim 5, further comprising:
the first pipe caps are detachably connected to two ends of the valve body and are in threaded connection with the valve body;
the tube core is arranged in the first tube cap, penetrates through the first tube cap and is internally provided with an inner baffle ring, and the tube core is in a cylindrical shape with openings at two ends;
the first sealing ring is arranged on 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 air holes are formed between the first pipe cap and the second pipe cap.
7. The gas detection plugging device according to any one of claims 1 to 4, further comprising:
locate alarm module on the valve body, alarm module with leak detection sensor electric connection.
8. A method for detecting plugging, which is characterized in that the gas plugging detection device of any one of claims 1 to 7 is adopted, and comprises the following steps:
acquiring a first flow on an input pipeline, a second flow on a branch, a third flow of a gas using device and detection signals of leakage detection sensors on all the detection blocking devices;
judging whether the input pipeline, the branch and the interface of the branch and the gas using device have the problem of gas leakage or not based on the acquired first flow, second flow and third flow, and judging whether the leakage is generated between the detection plugging device and the gas pipeline or not based on a detection signal of the leakage detection sensor;
and outputting a judgment result and cutting off the air supply of the pipeline where the leakage point is located.
9. The method of claim 8, wherein the step of determining whether a problem of gas leakage exists comprises:
when the difference value of the first flow and the sum of the second flows on each branch is smaller than a first preset value, judging that the input pipeline does not leak;
when the difference value of the first flow and the sum of the second flows 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 does not have the 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 has a leakage problem;
when the leakage detection sensor detects that the gas concentration exceeds a third preset value, the leakage detection sensor judges that the leakage detection device where the detection value exceeds the third preset value has the leakage problem, otherwise, the leakage detection device has no leakage problem.
10. The method of claim 9, wherein shutting off the gas supply to the line containing the leak comprises:
and controlling a cutting mechanism in the detection leakage stopping device at the input end of the pipeline where the leakage point is located to close the pipeline where the leakage point is located.
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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 (en) | 2023-06-20 |
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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 |