CN113757569A - Gas leakage detection early warning device for environmental protection engineering - Google Patents
Gas leakage detection early warning device for environmental protection engineering Download PDFInfo
- Publication number
- CN113757569A CN113757569A CN202111323104.2A CN202111323104A CN113757569A CN 113757569 A CN113757569 A CN 113757569A CN 202111323104 A CN202111323104 A CN 202111323104A CN 113757569 A CN113757569 A CN 113757569A
- Authority
- CN
- China
- Prior art keywords
- gas transmission
- transmission pipeline
- pipeline
- early warning
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
-
- 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
- F16L41/00—Branching pipes; Joining pipes to walls
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Pipeline Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention belongs to the technical field of early warning equipment, and particularly relates to a gas leakage detection early warning device for environmental protection engineering, which comprises a main gas transmission pipeline, wherein an inlet end air flow meter is fixedly arranged at one end, close to a gas inlet end, of the main gas transmission pipeline, an outlet end air flow meter is fixedly arranged at one side, close to a gas outlet end, of the main gas transmission pipeline, and the main gas transmission pipeline is hermetically connected with an auxiliary gas transmission pipeline through a connecting flange; be connected with supplementary gas transmission pipeline through one side at main gas transmission pipeline, when main gas transmission pipeline takes place to reveal, can open the intercommunication subassembly that is located between main gas transmission pipeline and the supplementary gas transmission pipeline, make the rotation motor can drive the shielding plate and rotate, thereby shelter from the seat with the trunk line and carry out the shutoff, and shelter from the seat with supplementary pipeline and open, make the inside gas of main gas transmission pipeline continue to flow through supplementary gas transmission pipeline, main gas transmission pipeline in time closes, thereby effectively prevent main gas transmission pipeline continuation use of revealing, further take place the phenomenon of revealing.
Description
Technical Field
The invention belongs to the technical field of early warning equipment, and particularly relates to a gas leakage detection early warning device for environmental protection engineering.
Background
With the development of society and urban construction, there is an increasing demand for transportation and storage of clean energy such as natural gas, pipelines become indispensable configurations in infrastructure, storage facilities for gas such as natural gas are increasing, and the development of gas storage such as natural gas is increasing.
Along with the increase of equipment operating duration, the pipeline can appear ageing after the time is of a specified duration, then under the effect of gaseous flow, the problem that the crack can appear or reveal, and current pipeline gas leakage check out test set detects at the pipe connection department mostly, when the pipeline takes place to leak, because the length of pipeline is longer, then cause the maintainer to be unable in time to discover easily, cause the delay of salvageing time, and traditional gas leakage detection means is artificially patrolling and examining, the manual detector that carries detects in dangerous place promptly, but because leak inspection or when proruption are revealed, salvage personnel are difficult to the very first time discovery and reveal the accident.
Therefore, the gas leakage detection early warning device for the environmental protection engineering is designed to solve the problems.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a gas leakage detection and early warning device for environmental protection engineering, which can accurately detect pipeline leakage, can close a leakage pipeline after detecting the pipeline leakage, can convey gas through an auxiliary gas conveying pipeline, can drive an early warning mechanism to knock a sound mechanism in a communicating pipe by utilizing the flowing kinetic energy of the gas in the conveying process of the auxiliary gas conveying pipeline, and can generate sound to carry out early warning, so that an early warning assembly and the auxiliary gas conveying pipeline are integrally arranged, the early warning assembly can be automatically started in the using process of the auxiliary gas conveying pipeline, an external power supply is not used, power resources are saved, and the gas leakage detection and early warning device is more environment-friendly.
In order to achieve the purpose, the invention provides the following technical scheme: a gas leakage detection early warning device for environmental protection engineering comprises a main gas transmission pipeline, wherein a gas inlet end and a gas outlet end are arranged at two ends of the main gas transmission pipeline, an inlet end air flow meter is fixedly arranged at one end, close to the gas inlet end, of the main gas transmission pipeline, an outlet end air flow meter is fixedly arranged at one side, close to the gas outlet end, of the main gas transmission pipeline, the inlet end air flow meter and the outlet end air flow meter are connected with an external controller, a connecting flange is arranged at one side of the main gas transmission pipeline, the main gas transmission pipeline is connected with an auxiliary gas transmission pipeline in a sealing mode through the connecting flange, the auxiliary gas transmission pipeline is communicated with the main gas transmission pipeline, an alarm assembly is fixedly arranged on the auxiliary gas transmission pipeline, a sound amplifying assembly is sleeved outside the alarm assembly, and the sound amplifying assembly is fixedly connected with the alarm assembly;
the alarm assembly comprises a speed-increasing barrel, a communicating pipe and a plurality of early warning mechanisms, the speed-increasing barrel is located on one side close to the air inlet end, the communicating pipe is fixedly installed on the other side of the speed-increasing barrel, a speed-increasing channel is formed in the speed-increasing barrel, the speed-increasing barrel is communicated with the communicating pipe through the speed-increasing channel, the plurality of early warning mechanisms are fixedly installed in the speed-increasing barrel, sound emitting mechanisms matched with the early warning mechanisms are fixedly installed in the speed-increasing barrel, the sound emitting mechanisms are the same in number as the early warning mechanisms, and the positions of the sound emitting mechanisms are corresponding to each other.
Preferably, the early warning mechanism comprises a spiral fan blade, a rotating cylinder and a supporting seat, the rotating cylinder is rotatably connected to one side of the supporting seat, the other side of the rotating cylinder is fixedly connected with the spiral fan blade, the spiral fan blade is positioned on one side of the speed increasing cylinder close to the air inlet end, a plurality of striking components which are distributed in a central symmetry mode are fixedly installed outside the rotating cylinder, an installation seat is arranged outside the supporting seat, a plurality of installation rods are fixedly installed between the supporting seat and the installation seat, and the installation seat is fixedly installed inside the speed increasing cylinder.
Preferably, the impact part comprises a connecting rod and a knocking ball, the connecting rod is fixedly arranged outside the rotating cylinder, and the other end of the connecting rod is fixedly connected with the knocking ball.
Preferably, the sound emitting mechanism comprises a connecting ring and a plurality of sounders, the connecting ring is fixedly installed inside the speed increasing cylinder, the connecting ring is located outside the rotating cylinder, the sounders are fixedly installed inside the connecting ring in a centrosymmetric manner, and the sounders correspond to the positions of the knocking balls.
Preferably, the sounder comprises an outer cylinder and an inner rod, the outer cylinder is fixedly arranged on the inner wall of the connecting ring, the inner rod is connected inside the outer cylinder in a sliding manner, a spring is fixedly arranged inside the outer cylinder, the other end of the spring is fixedly connected with the inner rod, and a sounding ball is fixedly arranged on one side, away from the spring, of the inner rod.
Preferably, the gas leakage detection early warning device for environmental protection engineering is provided with a sound amplifying assembly sleeved outside the speed increasing barrel, the sound amplifying assembly comprises two limiting sleeves and a plurality of supporting rods, the limiting sleeves are matched with the speed increasing barrel, the limiting sleeves are sleeved outside the speed increasing barrel, the supporting rods are fixedly arranged between the two limiting sleeves, and a plurality of sound amplifying barrels are fixedly arranged on one side, far away from the speed increasing barrel, of the supporting rods.
Preferably, the gas leakage detection and early warning device for environmental protection engineering of the invention is characterized in that a communicating component is arranged at the joint of the main gas transmission pipeline and the auxiliary gas transmission pipeline, the communicating component is fixedly arranged inside the main gas transmission pipeline, the communicating component comprises a main pipeline shielding seat, a connecting seat and an auxiliary pipeline shielding seat, the main pipeline shielding seat is fixedly arranged inside the main gas transmission pipeline, the connecting seat is fixedly arranged at one side of the main pipeline shielding seat, the auxiliary pipeline shielding seat is fixedly arranged at the other side of the connecting seat, the connecting seat is in an L-shaped structure, the included angle between the main pipeline shielding seat and the auxiliary pipeline shielding seat is ninety degrees, a main pipeline communicating hole communicated with the main gas transmission pipeline is arranged inside the main pipeline shielding seat, an auxiliary pipeline communicating hole communicated with the auxiliary gas transmission pipeline is arranged on the auxiliary pipeline shielding seat, a supporting frame is fixedly arranged on the connecting seat, and a rotating motor is fixedly arranged at one side of the supporting frame, rotate motor and external control ware electric connection, the output that rotates the motor runs through support frame fixed mounting and has the pivot to rotate the top of connecting at the support frame, and one side fixed mounting of pivot has the shielding plate, and the equal fixed mounting in both sides of shielding plate has the sealed inserted block with trunk line intercommunicating pore, the looks adaptation of assisting the pipeline intercommunicating pore, and the inside at trunk line intercommunicating pore, supplementary pipeline intercommunicating pore is pegged graft and is fixed to sealed inserted block.
Preferably, the gas leakage detection early warning device for environmental protection engineering is characterized in that sealing rings are fixedly bonded to two sides of the shielding plate, and the shielding plate is in sealing connection with the main pipeline shielding seat and the auxiliary pipeline shielding seat through the sealing rings.
Preferably, the gas leakage detection and early warning device for environmental protection engineering is characterized in that a reinforcing assembly is sleeved between the main gas transmission pipeline and the auxiliary gas transmission pipeline and consists of two symmetrically distributed limiting semi-lantern ring mechanisms, each limiting semi-lantern ring mechanism comprises two limiting lantern rings and a fixed rod, the fixed rod is fixedly arranged between the two limiting lantern rings, a threaded sleeve is fixedly arranged at the center of the fixed rod, an adjusting screw rod is arranged between the two threaded sleeves, and the two threaded sleeves are in threaded connection with the outer parts of the adjusting screw rods.
Preferably, the gas leakage detection early warning device for environmental protection engineering is provided with the speed increasing channel in a horn-shaped structure, and the narrow-mouth end of the speed increasing channel is positioned at one side close to the speed increasing cylinder.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, one side of the main gas transmission pipeline is connected with the auxiliary gas transmission pipeline, an inlet end air flow meter and an outlet end air flow meter are respectively arranged at the gas inlet end and the gas outlet end of the main gas transmission pipeline, the flow of the transmission gas of the main gas transmission pipeline can be detected through the inlet end air flow meter and the outlet end air flow meter, and the detection numerical values of the inlet end air flow meter and the outlet end air flow meter are compared, when the detection numerical values of the inlet end air flow meter and the outlet end air flow meter are the same, the main gas transmission pipeline is indicated to have no leakage, and when the detection numerical value of the outlet end air flow meter is smaller than that of the inlet end air flow meter, the main gas transmission pipeline is indicated to have leakage, so that a maintainer can quickly find the corresponding leakage pipeline, timely maintain and process the leakage pipeline, and further improve the leakage maintenance efficiency.
2. In the invention, an auxiliary gas transmission pipeline is connected to one side of a main gas transmission pipeline, when the main gas transmission pipeline leaks (the detection value of an outlet end gas flow meter is smaller than that of an inlet end gas flow meter), a communication component between the main gas transmission pipeline and the auxiliary gas transmission pipeline can be opened, so that a rotating motor can drive a shielding plate to rotate, a main pipeline shielding seat is blocked, the auxiliary pipeline shielding seat is opened, gas in the main gas transmission pipeline continues to flow through the auxiliary gas transmission pipeline, the main gas transmission pipeline is closed in time, the leaked main gas transmission pipeline is effectively prevented from continuing to be used, further leakage is caused, and under the mutual matching of the main gas transmission pipeline and the auxiliary gas transmission pipeline, as the main gas transmission pipeline is closed under the action of the communication component, a maintenance person can maintain the closed main gas transmission pipeline, and the auxiliary gas transmission pipeline can ensure the normal flow of gas in the pipeline, so that the problem that the gas cannot be normally transmitted in the pipeline is solved when the main gas transmission pipeline at the leakage position is maintained and closed.
3. In the invention, the alarm component is fixedly arranged in the auxiliary gas transmission pipeline, when gas is transmitted through the auxiliary gas transmission pipeline, the gas can flow in the communicating pipe and drive the spiral fan blades in the alarm component to rotate through the flow of the gas, thereby driving the beating component to rotate in the communicating pipe and beating the sound emitting mechanism on the inner wall of the communicating pipe, under the interaction of the knocking ball and the sounding ball, the inside of the communicating pipe makes a sound and carries out early warning, and the alarm component and the auxiliary gas transmission pipeline are integrally arranged, so that the alarm component can give an alarm when not connected with an external power supply, saves the power resource and is more environment-friendly, and effectively prevent under the outage condition, the unable sound production of warning subassembly, cause the early warning untimely, influence the problem that the pipeline overhauld.
4. In the invention, the sound amplifying assembly is fixedly arranged outside the communicating pipe, and the knocking sound inside the communicating pipe can be amplified through the sound amplifying barrel on the sound amplifying assembly, so that the sound emitted by the hitting component and the sound emitting mechanism is louder, and the transmission distance is farther, therefore, the alarm effect of the alarm assembly is effectively improved, and the alarm assembly is convenient for a maintainer to find more easily.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural diagram of an early warning mechanism according to the present invention;
FIG. 4 is a schematic structural diagram of the sound emitting mechanism of the present invention;
FIG. 5 is a schematic view of a communication assembly of the present invention;
FIG. 6 is a schematic view of the working state of the communicating member of the present invention;
FIG. 7 is a schematic view of the structure of the speaker assembly of the present invention;
fig. 8 is a schematic structural view of a reinforcing member according to the present invention.
In the figure:
1. a main gas transmission pipeline; 11. an air inlet end; 12. an air outlet end; 13. a connecting flange;
2. an auxiliary gas transmission pipeline;
3. an alarm component; 31. a speed increasing cylinder; 311. a speed increasing channel; 32. a communicating pipe; 33. an early warning mechanism; 331. a helical fan blade; 332. a rotating cylinder; 333. a supporting seat; 334. a striking member; 3341. a connecting rod; 3342. knocking and hitting the ball; 335. mounting a rod; 336. a mounting seat; 34. a sound emitting mechanism; 341. a connecting ring; 342. a sound generator; 3421. an outer cylinder; 3422. sounding balls; 3423. an inner rod; 3424. a spring;
4. an inlet end air flow meter;
5. an outlet end air flow meter;
6. a communicating component; 61. a main pipeline shielding seat; 611. a main pipeline communicating hole; 62. a connecting seat; 63. an auxiliary pipeline shielding seat; 631. an auxiliary pipeline communicating hole; 64. a support frame; 65. a rotating shaft; 66. rotating the motor; 67. sealing the insert block; 68. a seal ring; 69. a shielding plate;
7. a reinforcement assembly; 71. a half collar limiting mechanism; 711. a limiting lantern ring; 712. fixing the rod; 713. a threaded sleeve; 714. adjusting the screw rod.
8. A sound amplifying component; 81. a limiting sleeve; 82. a support bar; 83. a sound amplification tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-8;
the utility model provides an environmental protection engineering is with gas leakage detection early warning device, includes main gas transmission pipeline 1, and the both ends of main gas transmission pipeline 1 are equipped with inlet end 11 and the end 12 of giving vent to anger, and main gas transmission pipeline 1 is close to the one end fixed mounting of inlet end 11 has entrance point air current meter 4, and one side fixed mounting that main gas transmission pipeline 1 is close to end 12 of giving vent to anger has exit end air current meter 5, and entrance point air current meter 4 is connected with exit end air current meter 5 and external control ware.
In this embodiment: an inlet end airflow meter 4 and an outlet end airflow meter 5 are respectively arranged at an inlet end 11 and an outlet end 12 of the main gas transmission pipeline 1, the flow of the transmission gas of the main gas transmission pipeline 1 can be detected through the inlet end airflow meter 4 and the outlet end airflow meter 5, the detection numerical values of the inlet end airflow meter 4 and the outlet end airflow meter 5 are compared, when the detection numerical values of the inlet end airflow meter 4 and the outlet end airflow meter 5 are the same, the fact that leakage does not exist inside the main gas transmission pipeline 1 is indicated, when the detection numerical value of the outlet end airflow meter 5 is smaller than the detection numerical value of the inlet end airflow meter 4, the fact that leakage exists in the main gas transmission pipeline 1 is indicated, accordingly, convenience is brought to maintenance personnel to quickly find the corresponding leakage pipeline, timely maintenance and processing are carried out on the leakage pipeline, and further, the leakage maintenance efficiency is improved.
In this embodiment, the inlet airflow meter 4 and the outlet airflow meter 5 are wirelessly connected to an external controller, and when the detection data of the inlet airflow meter 4 and the outlet airflow meter 5 can be transmitted to the inside of the external controller, the external controller analyzes and processes the detection values of the inlet airflow meter 4 and the outlet airflow meter 5.
Based on the existing main gas transmission pipeline 1, an auxiliary gas transmission pipeline 2 is hermetically connected to one side of the main gas transmission pipeline 1, when the main gas transmission pipeline 1 leaks, namely the detection value of an outlet end air flow meter 5 is smaller than that of an inlet end air flow meter 4, a communication component 6 between the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2 can be opened, a main pipeline blocking seat 61 is blocked, and an auxiliary pipeline blocking seat 63 is opened, so that gas in the main gas transmission pipeline 1 continuously flows through the auxiliary gas transmission pipeline 2, the main gas transmission pipeline 1 is closed in time, the main gas transmission pipeline 1 which leaks is effectively prevented from being continuously used, further leakage occurs, and under the mutual matching of the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2, because the main gas transmission pipeline 1 is closed under the action of the communication component 6, when a maintenance person can maintain the closed main gas transmission pipeline 1, and supplementary gas transmission pipeline 2 can guarantee the normal flow of the inside gaseous of pipeline to when effectively maintaining and closing main gas transmission pipeline 1 to revealing, the inside unable normal gas of pipeline carries the problem.
In combination with the above, one side of the main gas transmission pipeline 1 is provided with a connecting flange 13, the main gas transmission pipeline 1 is hermetically connected with an auxiliary gas transmission pipeline 2 through the connecting flange 13, and the auxiliary gas transmission pipeline 2 is communicated with the main gas transmission pipeline 1.
In this embodiment, the connecting flange 13 is used to connect the auxiliary gas transmission pipeline 2 and the main gas transmission pipeline 1 in a sealing manner, so that the auxiliary gas transmission pipeline 2 and the main gas transmission pipeline 1 can be communicated with each other, and the auxiliary gas transmission pipeline 2 can be detached and replaced through the connecting flange 13.
It should be noted that: the connecting part of the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2 is provided with a communicating component 6, the communicating component 6 is fixedly arranged inside the main gas transmission pipeline 1, the communicating component 6 comprises a main pipeline shielding seat 61, a connecting seat 62 and an auxiliary pipeline shielding seat 63, the main pipeline shielding seat 61 is fixedly arranged inside the main gas transmission pipeline 1, the connecting seat 62 is fixedly arranged on one side of the main pipeline shielding seat 61, the auxiliary pipeline shielding seat 63 is fixedly arranged on the other side of the connecting seat 62, the connecting seat 62 is of an L-shaped structure, the included angle between the main pipeline shielding seat 61 and the auxiliary pipeline shielding seat 63 is ninety degrees, a main pipeline communicating hole 611 communicated with the main gas transmission pipeline 1 is arranged inside the main pipeline shielding seat 61, an auxiliary pipeline communicating hole 631 communicated with the auxiliary gas transmission pipeline 2 is arranged on the auxiliary pipeline shielding seat 63, a supporting frame 64 is fixedly arranged on the connecting seat 62, a rotating motor 66 is fixedly arranged on one side of the supporting frame 64, the rotating motor 66 is electrically connected with an external controller, the output end of the rotating motor 66 penetrates through the support frame 64 and is fixedly provided with a rotating shaft 65, the rotating shaft 65 is rotatably connected with the top of the support frame 64, one side of the rotating shaft 65 is fixedly provided with a baffle plate 69, both sides of the baffle plate 69 are fixedly provided with sealing inserts 67 matched with the main pipeline communication hole 611 and the auxiliary pipeline communication hole 631, the sealing inserts 67 are fixedly inserted in the main pipeline communication hole 611 and the auxiliary pipeline communication hole 631, when the detection value of the outlet end airflow meter 5 is smaller than the detection value of the inlet end airflow meter 4, the external controller controls the rotating motor 66, and drives the rotating shaft 65 to rotate on the support frame 64 through the rotating motor 66 until the rotating shaft 65 rotates ninety degrees, because the baffle plate 69 is fixedly arranged on one side of the rotating shaft 65, the baffle plate 69 can be driven to rotate in the rotating process of the rotating shaft 65, and the sealing insert 67 on one side of the shielding plate 69 is inserted into the main pipe communicating hole 611, and the main pipe communicating hole 611 on the main pipe shielding seat 61 is closed, and meanwhile, the sealing insert 67 on the other side of the shielding plate 69 is drawn out of the auxiliary pipe communicating hole 631 on the auxiliary pipe shielding seat 63, so that the auxiliary pipe shielding seat 63 is opened, the main gas transmission pipeline 1 is closed, the auxiliary gas transmission pipeline 2 is opened, the auxiliary gas transmission pipeline 2 is communicated with the external pipeline, the gas in the external pipeline continuously flows through the auxiliary gas transmission pipeline 2, and the main gas transmission pipeline 1 is closed in time.
It should be understood that: the sealing ring 68 is fixedly mounted on each of two sides of the shielding plate 69 in a bonding manner, the shielding plate 69 is connected with the main pipeline shielding seat 61 and the auxiliary pipeline shielding seat 63 in a sealing manner through the sealing ring 68, when the shielding plate 69 is used for shielding the inside of the main pipeline communicating hole 611, the sealing ring 68 can be connected with the main pipeline shielding seat 61, so that the sealing effect between the main pipeline shielding seat 61 and the shielding plate 69 is improved, the sealing performance of the joint between the main pipeline shielding seat 61 and the shielding plate 69 is better, and gas is effectively prevented from being discharged to the inside of the main gas transmission pipeline 1 through the joint between the main pipeline shielding seat 61 and the shielding plate 69.
Through fixedly installing the alarm assembly 3 in the auxiliary gas transmission pipeline 2, when gas is transmitted through the auxiliary gas transmission pipeline 2, the gas can flow in the communicating pipe 32, and through the gas flow, the spiral fan blade 331 in the alarm assembly 3 is driven to rotate, and then the striking component 334 is driven to rotate in the communicating pipe 32, and the sounding mechanism 34 on the inner wall of the communicating pipe 32 is struck, under the interaction of the striking ball 3342 and the spring 3424, the inside of the communicating pipe 32 is sounded and early-warning is carried out, and the alarm assembly 3 and the auxiliary gas transmission pipeline 2 are integrally arranged, so that the alarm assembly 3 can give an alarm when not being connected with an external power supply, the electric power resource is saved, the environment is more environment-friendly, and the alarm assembly 3 can not sound under the condition of power failure and cannot give off sound and cannot give off timely early-warning can be effectively prevented, the problem of influencing the pipeline maintenance.
In combination with the above, the alarm assembly 3 includes the speed-increasing barrel 31, the communicating tube 32 and the plurality of early warning mechanisms 33, the speed-increasing barrel 31 is located at one side close to the air inlet end 11, and the communicating tube 32 is fixedly mounted at the other side of the speed-increasing barrel 31, the speed-increasing channel 311 is provided inside the speed-increasing barrel 31, and the speed-increasing barrel 31 is communicated with the communicating tube 32 through the speed-increasing channel 311, the plurality of early warning mechanisms 33 are fixedly mounted inside the speed-increasing barrel 31, the sound emitting mechanisms 34 adapted to the early warning mechanisms 33 are fixedly mounted inside the speed-increasing barrel 31, and the number of the sound emitting mechanisms 34 is the same as that of the early warning mechanisms 33, and the positions are corresponding to each other.
In this embodiment, when gas enters the inside of the speed increasing cylinder 31 through the auxiliary gas transmission pipeline 2, and enters the inside of the communication pipe 32 through the speed increasing cylinder 31, because the speed increasing channel 311 is provided inside the speed increasing cylinder 31, and the gas is conveyed to the early warning mechanism 33 after being increased in speed by the speed increasing channel 311, the speed increasing channel 311 is of a horn-shaped structure, and the thin-mouth end of the speed increasing channel 311 is located at one side close to the speed increasing cylinder 31, so that the gas passes through the speed increasing channel 311, the gas flow rate at the discharge end is large, and the increased gas is blown to the early warning mechanism 33, so that the early warning mechanism 33 rotates inside the communication pipe 32, and the sound emitting mechanism 34 inside the communication pipe 32 is knocked, and a sound is emitted to give an alarm.
It should be noted that: the early warning mechanism 33 comprises a spiral fan blade 331, a rotary cylinder 332 and a support base 333, the rotary cylinder 332 is rotatably connected to one side of the support base 333, the other side of the rotary cylinder 332 is fixedly connected with the spiral fan blade 331, the spiral fan blade 331 is located at one side of the speed increasing cylinder 31 close to the air inlet end 11, a plurality of striking components 334 which are distributed in central symmetry are fixedly installed outside the rotary cylinder 332, an installation base 336 is arranged outside the support base 333, a plurality of installation rods 335 are fixedly installed between the support base 333 and the installation base 336, the installation base 336 is fixedly installed inside the speed increasing cylinder 31, when the accelerated air is blown to the spiral fan blade 331, the spiral fan blade 331 rotates at one side of the support base 333 through the rotary cylinder 332 and drives the rotary cylinder 332 to rotate, and since the striking components 334 are fixedly installed outside the rotary cylinder 332, the striking components 334 can be driven to rotate, and struck with sound emitting mechanism 34 by striking member 334.
It should be understood that: hit the part 334 and include connecting rod 3341 and strike ball 3342, connecting rod 3341 fixed mounting is in the outside of rotating cylinder 332, and the other end and the striking ball 3342 fixed connection of connecting rod 3341, and connecting rod 3341 is used for connecting strikes ball 3342 and rotating cylinder 332 for when rotating cylinder 332 rotates under the wind speed effect, accessible connecting rod 3341 drives strikes the ball 3342 and rotates in going on.
Further, the method comprises the following steps of;
in combination with the above, the sound emitting mechanism 34 includes a connection ring 341 and a plurality of sound generators 342, the connection ring 341 is fixedly installed inside the speed increasing cylinder 31, the connection ring 341 is located outside the rotating cylinder 332, the plurality of sound generators 342 are fixedly installed inside the connection ring 341 in a central symmetry manner, and the sound generators 342 correspond to the knocking ball 3342.
In this embodiment, when the connecting rod 3341 drives the knocking ball 3342 to rotate in the communicating pipe 32, the knocking ball 3342 knocks the sounder 342, and the knocking ball 3342 collides and vibrates the sounder 342, so that the sound is generated to prompt and warn the maintainers.
It should be noted that: the sounder 342 includes an outer cylinder 3421 and an inner rod 3423, the outer cylinder 3421 is fixedly installed on the inner wall of the connecting ring 341, the inner rod 3423 is slidably connected inside the outer cylinder 3421, a spring 3424 is fixedly installed inside the outer cylinder 3421, the other end of the spring 3424 is fixedly connected with the inner rod 3423, a sounding ball 3422 is fixedly installed on one side of the inner rod 3423 away from the spring 3424, when the connecting rod 3341 drives the knocking ball 3342 to rotate, the knocking ball 3342 knocks the sounding ball 3422 and pushes the sounding ball 3422, the sounding ball 3422 can be stretched inside the outer cylinder 3421 through the inner rod 3423 under the action of the spring 3424, and generates vibration to sound, thereby effectively preventing the sounding ball 3422 from deforming and being damaged when the knocking ball 3342 knocks the sounding ball 3422.
It should be understood that: the spring 3424 and the knocking ball 3342 are made of metal.
Through at the outside fixed mounting of communicating pipe 32 with public address subassembly 8, the sound amplification is carried out to the sound of beating of communicating pipe 32 inside to public address section of thick bamboo 83 on the accessible public address subassembly 8 for beat the sound that part 334 and mechanism 34 of making a sound sent and be louder, and the distance of propagation is farther, thereby has effectively improved alarm component 3's warning effect, and the easy access personnel discover more easily.
In combination with the above, the outside cover of the speed-increasing cylinder 31 is provided with the sound amplifying assembly 8, the sound amplifying assembly 8 comprises two limiting sleeves 81 and a plurality of supporting rods 82, the limiting sleeves 81 are matched with the communicating pipe 32, the limiting sleeves 81 are sleeved outside the communicating pipe 32, the supporting rods 82 are fixedly installed between the two limiting sleeves 81, and one side of the supporting rods 82 away from the communicating pipe 32 is fixedly provided with a plurality of sound amplifying cylinders 83.
In this embodiment, the knocking sound inside the communication pipe 32 is transmitted to the outside, and the sound transmitted from the communication pipe 32 is expanded by the sound amplifying barrel 83 having a horn-shaped structure, so that the sound generated by the striking member 334 and the sound generating mechanism 34 is louder, and the distance of propagation is longer, thereby effectively improving the alarm effect of the alarm assembly 3, and facilitating the discovery by the maintainer.
Further, the method comprises the following steps of;
in combination with the above, a reinforcing component 7 is sleeved between the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2, the reinforcing component 7 is composed of two symmetrically distributed limiting half collar mechanisms 71, each limiting half collar mechanism 71 comprises two limiting collar rings 711 and a fixing rod 712, the fixing rod 712 is fixedly installed between the two limiting collar rings 711, a threaded sleeve 713 is fixedly installed at the center of the fixing rod 712, an adjusting screw 714 is arranged between the two threaded sleeves 713, and the two threaded sleeves 713 are in threaded connection with the outer portion of the adjusting screw 714.
In this embodiment, the reinforcing component 7 is used for connecting and reinforcing the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2, the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2 are respectively clamped in two limit collars 711 which are vertically distributed, the adjusting screw 714 is manually rotated, in the rotating process of the adjusting screw 714, under the effect of internal threads of the threaded sleeve 713, the two threaded sleeves 713 can be driven to rotate in a threaded manner outside the adjusting screw 714, the two threaded sleeves 713 can be moved in the opposite direction, the distance between the two threaded sleeves 713 is adjusted, the limit half collar mechanism 71 is used for fastening and fixing the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2, and connection and reinforcement between the main gas transmission pipeline 1 and the auxiliary gas transmission pipeline 2 are achieved.
It should be noted that: two opposite-spiral-direction threads are arranged at two ends of the adjusting screw 714 and are respectively in threaded connection with the two thread sleeves 713 through the two threads, so that the adjusting screw 714 can drive the two thread sleeves 713 to perform threaded rotation outside the adjusting screw 714 in the rotating process, the two thread sleeves 713 can move along opposite or opposite directions, and the distance between the two thread sleeves 713 can be adjusted.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The gas leakage detection early warning device for the environmental protection engineering comprises a main gas transmission pipeline (1) and is characterized in that a gas inlet end (11) and a gas outlet end (12) are arranged at two ends of the main gas transmission pipeline (1), an inlet end air flow meter (4) is fixedly arranged at one end, close to the gas inlet end (11), of the main gas transmission pipeline (1), an outlet end air flow meter (5) is fixedly arranged at one side, close to the gas outlet end (12), of the main gas transmission pipeline (1), the inlet end air flow meter (4) and the outlet end air flow meter (5) are connected with an external controller, a connecting flange (13) is arranged at one side of the main gas transmission pipeline (1), the main gas transmission pipeline (1) is hermetically connected with an auxiliary gas transmission pipeline (2) through the connecting flange (13), and the auxiliary gas transmission pipeline (2) is communicated with the main gas transmission pipeline (1), an alarm assembly (3) is fixedly mounted on the auxiliary gas transmission pipeline (2), a sound amplification assembly (8) is sleeved outside the alarm assembly (3), and the sound amplification assembly (8) is fixedly connected with the alarm assembly (3);
alarm component (3) are including increasing speed section of thick bamboo (31), communicating pipe (32) and a plurality of early warning mechanism (33), increasing speed section of thick bamboo (31) are located and are close to one side of inlet end (11), just communicating pipe (32) fixed mounting is in the opposite side of increasing speed section of thick bamboo (31), increasing speed passageway (311) has been seted up to the inside of increasing speed section of thick bamboo (31), just increasing speed section of thick bamboo (31) pass through increasing speed passageway (311) with communicating pipe (32) are linked together, a plurality of early warning mechanism (33) fixed mounting is in the inside of increasing speed section of thick bamboo (31), the inside fixed mounting of increasing speed section of thick bamboo (31) with go out sound mechanism (34) of early warning mechanism (33) looks adaptation, just go out the quantity of sound mechanism (34) with early warning mechanism (33) are the same, and the position is corresponding.
2. The gas leakage detection and early warning device for environmental protection engineering according to claim 1, characterized in that: early warning mechanism (33) include spiral flabellum (331), rotate a section of thick bamboo (332) and supporting seat (333), it rotates to connect to rotate a section of thick bamboo (332) one side of supporting seat (333), just the opposite side of rotating a section of thick bamboo (332) with spiral flabellum (331) fixed connection, spiral flabellum (331) are located being close to of acceleration rate section of thick bamboo (31) one side of inlet end (11), the outside fixed mounting who rotates a section of thick bamboo (332) has a plurality of to be central symmetric distribution hits parts of beating (334), the outside of supporting seat (333) is equipped with mount pad (336), supporting seat (333) with fixed mounting has a plurality of installation pole (335) between mount pad (336), mount pad (336) fixed mounting be in the inside of acceleration rate section of thick bamboo (31).
3. The gas leakage detection and early warning device for environmental protection engineering according to claim 2, characterized in that: the beating component (334) comprises a connecting rod (3341) and a beating ball (3342), the connecting rod (3341) is fixedly installed outside the rotating cylinder (332), and the other end of the connecting rod (3341) is fixedly connected with the beating ball (3342).
4. The gas leakage detection and early warning device for environmental protection engineering according to claim 3, characterized in that: the sound emitting mechanism (34) comprises a connecting ring (341) and a plurality of sound generators (342), the connecting ring (341) is fixedly installed inside the speed increasing cylinder (31), the connecting ring (341) is located outside the rotating cylinder (332), the sound generators (342) are fixedly installed inside the connecting ring (341) in a centrosymmetric mode, and the sound generators (342) correspond to the knocking ball (3342).
5. The gas leakage detection and early warning device for environmental protection engineering according to claim 4, characterized in that: the sounder (342) comprises an outer barrel (3421) and an inner rod (3423), the outer barrel (3421) is fixedly installed on the inner wall of the connecting ring (341), the inner rod (3423) is connected to the inside of the outer barrel (3421) in a sliding mode, a spring (3424) is fixedly installed inside the outer barrel (3421), the other end of the spring (3424) is fixedly connected with the inner rod (3423), and a sounding ball (3422) is fixedly installed on one side, far away from the spring (3424), of the inner rod (3423).
6. The gas leakage detection and early warning device for environmental protection engineering according to claim 1, characterized in that: outside cover of speed-increasing barrel (31) is equipped with public address subassembly (8), public address subassembly (8) include two spacing sleeve (81) and a plurality of bracing piece (82), spacing sleeve (81) with communicating pipe (32) looks adaptation, spacing sleeve (81) cover is established the outside of communicating pipe (32), bracing piece (82) fixed mounting is two between spacing sleeve (81), keep away from bracing piece (82) one side fixed mounting of communicating pipe (32) has a plurality of public address section of thick bamboo (83).
7. The gas leakage detection and early warning device for environmental protection engineering according to claim 1, characterized in that: the main gas transmission pipeline (1) and the joint of the auxiliary gas transmission pipeline (2) are provided with a communicating component (6), the communicating component (6) is fixedly arranged in the main gas transmission pipeline (1), the communicating component (6) comprises a main pipeline blocking seat (61), a connecting seat (62) and an auxiliary pipeline blocking seat (63), the main pipeline blocking seat (61) is fixedly arranged in the main gas transmission pipeline (1), the connecting seat (62) is fixedly arranged on one side of the main pipeline blocking seat (61), the auxiliary pipeline blocking seat (63) is fixedly arranged on the other side of the connecting seat (62), the connecting seat (62) is of an L-shaped structure, the main pipeline blocking seat (61) and the auxiliary pipeline blocking seat (63) form a ninety degree included angle, the main pipeline communicating hole (611) communicated with the main gas transmission pipeline (1) is formed in the inner part of the blocking seat (61), just assist the pipeline shelter from having seted up on seat (63) with supplementary pipeline intercommunicating pore (631) that gas transmission pipeline (2) are linked together, fixed mounting has support frame (64) on connecting seat (62), one side fixed mounting of support frame (64) has rotation motor (66), rotate motor (66) and external control ware electric connection, the output that rotates motor (66) runs through support frame (64) fixed mounting has pivot (65) rotate pivot (65) and connect in the top of support frame (64), one side fixed mounting of pivot (65) has shielding plate (69), the equal fixed mounting in both sides of shielding plate (69) have with trunk line intercommunicating pore (611), assist sealed inserted block (67) of pipeline intercommunicating pore (631) looks adaptation, sealed inserted block (67) is pegged graft and is fixed trunk line intercommunicating pore (611) The auxiliary pipe communicating hole (631).
8. The gas leakage detection and early warning device for environmental protection engineering according to claim 7, characterized in that: all bonding fixed mounting of both sides of shielding plate (69) has sealing washer (68), shielding plate (69) pass through sealing washer (68) with main pipeline shelters from seat (61) auxiliary pipeline shelters from seat (63) sealing connection.
9. The gas leakage detection and early warning device for environmental protection engineering according to claim 1, characterized in that: main gas transmission pipeline (1) with the cover is equipped with between supplementary gas transmission pipeline (2) and consolidates subassembly (7), consolidate subassembly (7) and constitute by two symmetric distribution's spacing half lantern ring mechanism (71), spacing half lantern ring mechanism (71) include two spacing lantern rings (711) and dead lever (712), dead lever (712) fixed mounting is two between the spacing lantern ring (711), the center department fixed mounting of dead lever (712) has thread bush (713), two be equipped with adjusting screw (714) between thread bush (713), two thread bush (713) threaded connection is in adjusting screw (714)'s outside.
10. The gas leakage detection and early warning device for environmental protection engineering according to claim 1, characterized in that: the speed-increasing channel (311) is of a horn-shaped structure, and the thin-opening end of the speed-increasing channel (311) is located on one side close to the speed-increasing barrel (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323104.2A CN113757569B (en) | 2021-11-10 | 2021-11-10 | Gas leakage detection early warning device for environmental protection engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323104.2A CN113757569B (en) | 2021-11-10 | 2021-11-10 | Gas leakage detection early warning device for environmental protection engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113757569A true CN113757569A (en) | 2021-12-07 |
| CN113757569B CN113757569B (en) | 2022-01-18 |
Family
ID=78784832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111323104.2A Active CN113757569B (en) | 2021-11-10 | 2021-11-10 | Gas leakage detection early warning device for environmental protection engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113757569B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483622A (en) * | 2022-01-12 | 2022-05-13 | 河南省豫冠安全发展有限公司 | Mine ventilation structure capable of effectively controlling air flow |
| CN117685510A (en) * | 2024-02-04 | 2024-03-12 | 烟台明炬新能源有限公司 | Industrial gas leakage real-time on-line monitoring equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2263373Y (en) * | 1996-05-09 | 1997-09-24 | 顾进福 | Whistle alarm for fuel gas leakage |
| WO2006064181A1 (en) * | 2004-12-16 | 2006-06-22 | Insensys Oil & Gas Limited | Structural joint strain monitoring apparatus and system |
| CN102023229A (en) * | 2009-09-17 | 2011-04-20 | 财团法人工业技术研究院 | Fluid state detecting device and water sprinkling device thereof |
| CN202252872U (en) * | 2011-10-09 | 2012-05-30 | 中国计量学院 | Underwater gas transmission pipeline leakage detection performance evaluating experimental platform |
| KR20180033807A (en) * | 2016-09-26 | 2018-04-04 | 동아대학교 산학협력단 | Gas valve automatic interception equipment |
-
2021
- 2021-11-10 CN CN202111323104.2A patent/CN113757569B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2263373Y (en) * | 1996-05-09 | 1997-09-24 | 顾进福 | Whistle alarm for fuel gas leakage |
| WO2006064181A1 (en) * | 2004-12-16 | 2006-06-22 | Insensys Oil & Gas Limited | Structural joint strain monitoring apparatus and system |
| CN102023229A (en) * | 2009-09-17 | 2011-04-20 | 财团法人工业技术研究院 | Fluid state detecting device and water sprinkling device thereof |
| CN202252872U (en) * | 2011-10-09 | 2012-05-30 | 中国计量学院 | Underwater gas transmission pipeline leakage detection performance evaluating experimental platform |
| KR20180033807A (en) * | 2016-09-26 | 2018-04-04 | 동아대학교 산학협력단 | Gas valve automatic interception equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483622A (en) * | 2022-01-12 | 2022-05-13 | 河南省豫冠安全发展有限公司 | Mine ventilation structure capable of effectively controlling air flow |
| CN114483622B (en) * | 2022-01-12 | 2023-08-11 | 河南省豫冠安全发展有限公司 | Mine ventilation structure capable of effectively controlling wind flow |
| CN117685510A (en) * | 2024-02-04 | 2024-03-12 | 烟台明炬新能源有限公司 | Industrial gas leakage real-time on-line monitoring equipment |
| CN117685510B (en) * | 2024-02-04 | 2024-04-12 | 烟台明炬新能源有限公司 | Industrial gas leakage real-time on-line monitoring equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113757569B (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113757569B (en) | Gas leakage detection early warning device for environmental protection engineering | |
| CN212986417U (en) | Conveying pipeline capable of reducing water hammer acting force | |
| CN207420725U (en) | A kind of squelch type generating set of built-in wind deflector | |
| CN109404346A (en) | A kind of low noise quo of local Fan for Mine | |
| CN205743415U (en) | Except making an uproar anti-vibration gas-bag door | |
| CN206220993U (en) | A kind of coal mining gas discharger | |
| CN208898977U (en) | Broken sky device | |
| CN107437771A (en) | A kind of construction and installation air blowing type threading apparatus | |
| CN204029105U (en) | A kind of aspirating smoke detection device | |
| CN209039571U (en) | Broken sky device | |
| CN205591969U (en) | Integration of steam pipe tape steam turbine sweeps device fast | |
| CN107976294B (en) | Device and method for weakening rarefaction wave of oxyhydrogen detonation shock tube | |
| CN212927923U (en) | Positive pressure air duct | |
| CN108222130A (en) | A kind of intermittence moisturizing intelligent regulating device | |
| CN211374040U (en) | Nuclear power station check valve countercurrent test device | |
| CN210566955U (en) | Pressure relief pipeline device | |
| CN106122669B (en) | Self-operated type pipe cap and self-operated type pipe cap mounting structure | |
| CN208937260U (en) | Coil pipe air-tightness detection device | |
| CN206723158U (en) | Blower fan silencer | |
| CN219499742U (en) | Positive pressure explosion-proof box with sweeping and blowing functions | |
| CN219711905U (en) | Resistance-type fan silencer | |
| CN216642561U (en) | Counter-rotating main ventilator air door | |
| CN210199096U (en) | Monitoring implementation device | |
| CN220750314U (en) | Exhaust mechanism with low noise | |
| CN217628459U (en) | Cooling device for rock drill in front of blast furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |