CN115978323A - Intelligent remote liquid supply safety connector for coal mine - Google Patents

Intelligent remote liquid supply safety connector for coal mine Download PDF

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Publication number
CN115978323A
CN115978323A CN202310049278.7A CN202310049278A CN115978323A CN 115978323 A CN115978323 A CN 115978323A CN 202310049278 A CN202310049278 A CN 202310049278A CN 115978323 A CN115978323 A CN 115978323A
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CN
China
Prior art keywords
connector
groove
connector body
liquid supply
fixedly connected
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Pending
Application number
CN202310049278.7A
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Chinese (zh)
Inventor
付希波
李光林
宋方琛
焦玉云
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Qingdao Haode Boer Industrial Co ltd
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Qingdao Haode Boer Industrial Co ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Qingdao Haode Boer Industrial Co ltd filed Critical Qingdao Haode Boer Industrial Co ltd
Priority to CN202310049278.7A priority Critical patent/CN115978323A/en
Publication of CN115978323A publication Critical patent/CN115978323A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The invention discloses an intelligent remote liquid supply safety connector for a coal mine, which comprises a connector body, wherein a storage battery is embedded in the inner wall of the connector body, and an alarm is installed at the lower end of the connector body; the two pipe bodies are respectively positioned on the left side and the right side of the connector body, mounting grooves are formed in the left side and the right side of the connector body, and opposite ends of the two pipe bodies respectively extend into the corresponding mounting grooves; the mounting box is mounted at the upper end of the connector body, and a circuit board is mounted in the mounting box. This connector in the use of reality, can be comparatively convenient realization install fast, in addition, is provided with a plurality of cyclic annular inflatable seal strips, when the cyclic annular inflatable seal strip in the outside plays a role, also when promptly leaking, timely early warning carries out.

Description

Intelligent remote liquid supply safety connector for coal mine
Technical Field
The invention relates to the field of liquid supply connectors, in particular to an intelligent remote liquid supply safety connector for a coal mine.
Background
The existing coal mine remote liquid supply connector is generally long in the whole liquid supply pipeline, a plurality of connectors are needed for connection, a sealing gasket for sealing is easily damaged and damaged in the long-term use process, leakage is caused, the existing connector cannot quickly and clearly determine the leakage position, workers cannot find and process the leakage position in time, cannot automatically prompt and cannot monitor all connection points;
therefore, the invention patent with the publication number of CN114607849A discloses an intelligent remote liquid supply connector system for a coal mine, which comprises a monitoring unit, a liquid supply unit and a liquid supply unit, wherein the monitoring unit is used for monitoring the state information of a liquid supply pipeline on site; the connectors are connected with the monitoring unit through a field bus and used for transmitting the sealing state information of the connectors and the liquid flow information passing through the connectors to the monitoring unit; the connector used by the remote liquid supply connector system comprises a connecting pipe, connecting grooves are formed in the inner walls of the two ends of the connecting pipe, and a conveying pipe is inserted into each connecting groove. The invention improves the sealing reliability by integral type balanced extrusion sealing, monitors each connector by adopting an industrial network, provides electric energy by two modes of self-power generation and external power supply, and detects the sealing leakage state and liquid flow data in real time, so that the management and maintenance are more convenient and the intelligent degree is higher;
however, when the connector is connected, the clamp is used for connection, which not only easily causes connection damage, but also is troublesome to install, and in addition, only one sealing ring is arranged, so that the sealing effect is to be improved, and when a problem occurs in the sealing ring each time, a leakage problem occurs, which causes economic loss, and therefore how to solve the problem needs to be considered.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an intelligent remote liquid supply safety connector for a coal mine.
In order to achieve the purpose, the invention adopts the following technical scheme:
the intelligent remote liquid supply safety connector for the coal mine comprises a connector body, wherein a storage battery is embedded in the inner wall of the connector body, and an alarm is mounted at the lower end of the connector body;
the two pipe bodies are respectively positioned on the left side and the right side of the connector body, mounting grooves are formed in the left side and the right side of the connector body, and opposite ends of the two pipe bodies respectively extend into the corresponding mounting grooves;
the mounting box is mounted at the upper end of the connector body, a circuit board is mounted in the mounting box, a current sensing module, a processing module, a wireless module and a GPS positioning module are arranged in the circuit board, and the current sensing module is located in a loop of the alarm;
the connecting mechanisms are respectively positioned on the side walls of the connector body and are used for limiting the pipe body and the connector body;
and the sealing mechanism is used for ensuring the sealing performance after connection.
Preferably, the connecting mechanism comprises a connecting box fixedly connected to the side wall of the connector body in an installing mode, a connecting groove is formed in one side, close to the pipe body, of the connecting box, a sliding plate capable of sliding up and down is arranged in the connecting groove, one side, far away from the pipe body, of the sliding plate is elastically connected with the corresponding inner wall of the first spring connecting groove, an electromagnet is fixedly connected to one side, far away from the pipe body, of the connecting box, the sliding plate is magnetic, the electromagnet is in repulsion with the adjacent surface of the sliding plate after being electrified, the other side of the sliding plate is connected with a connecting block, the other side of the connecting block is fixedly connected with an arc limiting plate, and an arc limiting groove is formed in one side, close to the arc limiting plate, of the pipe body.
Preferably, the connector further comprises a trigger mechanism, the trigger mechanism comprises a hollow box fixed at the upper end of the connector body, a piston plate capable of sliding up and down is arranged in the hollow box, a first current conducting plate is fixedly connected to the lower end of the piston plate, two first current receiving blocks are symmetrically and fixedly connected to the inner bottom of the hollow box, and the two first current receiving blocks are electrically connected with the electromagnets.
Preferably, the interior top of hollow box rotates and is connected with the threaded rod, the upper end of threaded rod extends to the external world to fixedly connected with twists reverse the piece, the upper end fixedly connected with screw thread section of thick bamboo of piston plate, the lower extreme of threaded rod extends to in the screw thread section of thick bamboo to with the inner wall threaded connection of screw thread section of thick bamboo.
Preferably, sealing mechanism is including setting up the second annular groove on the mounting groove inner wall, the lateral wall of body is provided with a plurality of first annular grooves, every the second annular groove all cooperates with the first annular groove that corresponds, every annular inflatable packer all installs annular inflatable packer in the first annular groove, every annular inflatable packer all communicates communicating pipe, and is a plurality of the common intercommunication of the other end of communicating pipe has the trunk line, the other end of trunk line extends to in the interior bottom space of hollow box.
Preferably, sealing mechanism is including setting up the second annular groove on the mounting groove inner wall, the lateral wall of body is provided with a plurality of first annular grooves, every the second annular groove all cooperates with the first annular groove that corresponds, every annular inflatable packer all installs annular inflatable packer in the first annular groove, every annular inflatable packer all communicates communicating pipe, and is a plurality of the common intercommunication of the other end of communicating pipe has the trunk line, the other end of trunk line extends to in the interior bottom space of hollow box.
Preferably, every the interior bottom of mounting groove all still is provided with the trigger groove, every trigger the groove and all lie in between two second annular grooves in the outside, every trigger the inslot and all still be provided with gliding piston piece from top to bottom, every the equal fixedly connected with second current conducting plate of lower extreme of piston piece, every the lower extreme of second current conducting plate all through second spring and the interior bottom elastic connection who triggers the groove, every equal fixedly connected with ring-shaped spacing on the inner wall in trigger the groove.
Preferably, every all inlay on the left and right sides inner wall of trigger groove and be equipped with the second and connect the electric piece, per two the second connects the electric piece all with correspond first current conducting plate constitution an circular telegram piece, two circular telegram piece all cooperates with the siren.
Compared with the prior art, the invention has the beneficial effects that:
1. firstly in two body suction in two mounting grooves, and let the position of arcuation limiting plate is aimed at to the arcuation spacing groove on the body, staff wrench movement piece can drive the threaded rod and rotate, can let body and connector body connect, has realized the spacing of body, compares with prior art, very big improvement the installation rate of body.
2. Through the setting of a plurality of cyclic annular inflatable sealing strips, the sealed effect of improvement that can step forward, and in the use of reality, when two cyclic annular inflatable sealing strips near connector body middle part all appear damaged, liquid has leaked the trigger groove department that corresponds, receive liquid pressure and can support the piston piece and move down, let the piston piece move down after two second electricity connection pieces of second current conducting plate contact, the siren can send out the police dispatch newspaper, realize the effect of alarm, when not leaking completely, timely early warning carries out, the condition that the leakage was remedied again can be avoided appearing, reduce the loss to minimum.
3. When the siren was reported to police, after the electric current was sensed to the electric current to the current induction module, handled the back through processing module, utilized wireless module to pass through GPS orientation module with the position of this connector and transmitted the external world, realized remote alarm's effect, compared with prior art, and can make things convenient for the staff to find the position of specific connector through remote alarm, further made things convenient for staff's work.
Drawings
FIG. 1 is a schematic structural diagram of an intelligent remote liquid supply safety connector for a coal mine according to the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is an enlarged view at C of FIG. 2;
FIG. 5 is a view of the connector body of FIG. 1 shown disconnected from the connector body;
fig. 6 is a flow chart of the operation of each module in the circuit board.
In the figure: the connector comprises a connector body 1, a pipe body 2, a mounting groove 3, a hollow box 4, a mounting box 5, a circuit board 6, a torsion block 7, a piston plate 8, a threaded rod 9, a storage battery 10, an alarm 11, a second conductive plate 12, a first annular groove 13, an annular inflatable sealing strip 14, a first spring 15, a communicating pipe 16, a connecting box 17, a sliding plate 18, an arc limiting groove 19, an arc limiting plate 20, an electromagnet 21, a connecting block 22, a first conductive plate 23, a first electrification block 24, a main pipe 25, a second annular groove 26, a second annular groove 27, a trigger groove 28, a piston block 29, a second spring 30, a second electrification block 31 and an annular limiting strip 32.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-6, the intelligent remote liquid supply safety connector for the coal mine comprises a connector body 1, wherein a storage battery 10 is embedded in the inner wall of the connector body 1, and an alarm 11 is installed at the lower end of the connector body 1;
as an embodiment of the present invention, the connector further comprises two pipe bodies 2, wherein the pipe bodies 2 are respectively located at the left and right sides of the connector body 1, the left and right sides of the connector body 1 are both provided with mounting grooves 3, and opposite ends of the two pipe bodies 2 respectively extend into the corresponding mounting grooves 3;
as an implementation mode of the invention, the connector further comprises a mounting box 5, the mounting box 5 is mounted at the upper end of the connector body 1, a circuit board 6 is mounted in the mounting box 5, a current sensing module, a processing module, a wireless module and a GPS positioning module are arranged in the circuit board 6, the current sensing module is located in a loop of the alarm 11, when the alarm 11 gives an alarm, the current sensing module senses current and transmits the position of the connector to the outside through the GPS positioning module by using the wireless module after the current sensing module senses the current and the processing module processes the current, so that the remote alarm function is realized;
as an implementation mode of the invention, the connector further comprises a plurality of connecting mechanisms, the plurality of connecting mechanisms are respectively located on the side wall of the connector body 1, the plurality of connecting mechanisms are used for limiting the pipe body 2 and the connector body 1, each connecting mechanism comprises a connecting box 17 fixedly connected to the side wall of the connector body 1 in an installing manner, one side, close to the pipe body 2, of each connecting box 17 is provided with a connecting groove, a sliding plate 18 capable of sliding up and down is arranged in each connecting groove, one side, far away from the pipe body 2, of each sliding plate 18 is elastically connected through a corresponding inner wall of each connecting groove of a first spring 15, one side, far away from the pipe body 2, of each connecting box 17 is fixedly connected with an electromagnet 21, each sliding plate 18 has magnetism, each electromagnet 21 is in an electrified state and repels like poles of adjacent surfaces of the sliding plates 18, the other side of each sliding plate 18 is connected with a connecting block 22, the other side of each connecting block 22 is fixedly connected with an arc-shaped limiting plate 20, and one side, close to the arc-shaped limiting plate 20, of the pipe body 2 is provided with an arc-shaped limiting groove 19;
as an implementation mode of the invention, the connector further comprises a trigger mechanism, the trigger mechanism comprises a hollow box 4 fixed at the upper end of the connector body 1, a piston plate 8 capable of sliding up and down is arranged in the hollow box 4, the lower end of the piston plate 8 is fixedly connected with a first conducting plate 23, two first electricity-connecting blocks 24 are symmetrically and fixedly connected to the inner bottom of the hollow box 4, the two first electricity-connecting blocks 24 are electrically connected with a plurality of electromagnets 21, the electromagnets 21 are connected in series to form an electric device, the positive electrode of the storage battery 10 is electrically connected with the first electricity-connecting block 24 on the right side through a lead, the negative electrode of the storage battery 10, the electric device and the first electricity-connecting block 24 on the left side are sequentially and electrically connected through leads, the inner top of the hollow box 4 is rotatably connected with a threaded rod 9, the upper end of the threaded rod 9 extends to the outside and is fixedly connected with a twisting block 7, the upper end of the piston plate 8 is fixedly connected with a threaded cylinder, and the lower end of the threaded rod 9 extends to the threaded cylinder and is in threaded connection with the threaded cylinder;
as an embodiment of the present invention, the present invention further includes a sealing mechanism, the sealing mechanism is configured to ensure the sealing performance after connection, the sealing mechanism includes a second annular groove 27 disposed on the inner wall of the mounting groove 3, the outer side wall of the pipe body 2 is provided with a plurality of first annular grooves 13, each second annular groove 27 is matched with a corresponding first annular groove 13, an annular inflatable sealing strip 14 is mounted in each first annular groove 13, each annular inflatable sealing strip 14 is communicated with a communicating pipe 16, the other ends of the plurality of communicating pipes 16 are communicated with a main pipe 25, and the other end of the main pipe 25 extends into the inner bottom space of the hollow box 4;
as an embodiment of the present invention, electromagnetic valves are installed in a plurality of communication pipes 16, a push switch is installed on the twisting block 7, the push switch is electrically connected to the plurality of electromagnetic valves, a trigger groove 28 is further provided at the inner bottom of each installation groove 3, each trigger groove 28 is located between two outermost second annular grooves 27, a piston block 29 capable of sliding up and down is further provided in each trigger groove 28, a second conductive plate 12 is fixedly connected to the lower end of each piston block 29, the lower end of each second conductive plate 12 is elastically connected to the inner bottom of the trigger groove 28 through a second spring 30, an annular limit strip 32 is fixedly connected to the inner wall of each trigger groove 28, second power-receiving blocks 31 are embedded in the inner walls of the left and right sides of each trigger groove 28, each two second power-receiving blocks 31 and the corresponding second conductive plate 12 form a power-on part, the two power-on parts are matched with the alarm 11, the two power-on parts form two switches, the two switches are connected in parallel with the alarm 11 and located in a loop (the alarm 11 is located in a main loop), and when one of the power-on part is triggered, the alarm 11 will give out an alarm.
In the present invention, during a specific use process, the plurality of annular inflatable sealing strips 14 in an initial state are not inflated and are completely located in the corresponding second annular grooves 27, and the plurality of arc-shaped limiting plates 20 are also located inside the corresponding connecting boxes 17;
at this time, firstly, inserting the two tube bodies 2 into the two mounting grooves 3, aligning the arc-shaped limiting grooves 19 on the tube bodies 2 with the positions of the arc-shaped limiting plates 20, twisting the twisting block 7 by a worker to drive the threaded rod 9 to rotate, driving the piston plate 8 to move downwards by matching with the threaded cylinder, pressing the air in the bottom space in the hollow box 4 into the plurality of annular inflatable sealing strips 14 after the piston plate 8 moves downwards, inflating the plurality of annular inflatable sealing strips 14, and sealing the whole formed by each first annular groove 13 and the corresponding second annular groove 27;
when the plurality of annular inflatable sealing strips 14 are completely inflated, the first conductive plates 23 just contact the two first power connection blocks 24, the plurality of electromagnets 21 are electrified, the electromagnets 21 are electrified and then subjected to repulsion, the plurality of sliding plates 18 move away from the electromagnets 21 and enter the corresponding arc-shaped limiting grooves 19, and the pipe body 2 is connected with the connector body 1, so that the limiting of the pipe body 2 is realized, and the mounting speed of the pipe body 2 is greatly improved compared with the prior art;
in addition, the arrangement of the plurality of annular inflatable sealing strips 14 can further improve the sealing effect, and in the actual use process, when two annular inflatable sealing strips 14 close to the middle part of the connector body 1 are damaged, liquid leaks to the corresponding trigger grooves 28, the piston block 29 is pushed to move downwards by the liquid pressure, and after the piston block 29 moves downwards to the second conductive plate 12 to contact with the two second conductive blocks 31, the alarm 11 gives an alarm to realize the alarm function;
and when siren 11 sends out the police dispatch newspaper, behind the electric current induction module sensed the electric current, handle the back through processing module, utilize wireless module to pass through GPS orientation module with the position of this connector and transmit the external world, realize remote alarm's effect, compared with the prior art, when not totally leaking, timely carry out the early warning, the condition that can avoid appearing leaking and remedying again appears, reduce the loss to minimumly, and can make things convenient for the staff to find the position of specific connector through remote alarm, further made things convenient for staff's work.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. The utility model provides an intelligent remote confession liquid safety connector in colliery which characterized in that includes:
the connector comprises a connector body (1), wherein a storage battery (10) is embedded in the inner wall of the connector body (1), and an alarm (11) is installed at the lower end of the connector body (1);
the connector comprises two pipe bodies (2), wherein the pipe bodies (2) are respectively positioned at the left side and the right side of a connector body (1), mounting grooves (3) are respectively formed in the left side and the right side of the connector body (1), and opposite ends of the two pipe bodies (2) respectively extend into the corresponding mounting grooves (3);
the connector comprises a connector body (1), and is characterized by comprising a mounting box (5), wherein the mounting box (5) is mounted at the upper end of the connector body (1), a circuit board (6) is mounted in the mounting box (5), a current sensing module, a processing module, a wireless module and a GPS (global positioning system) positioning module are arranged in the circuit board (6), and the current sensing module is positioned in a loop of an alarm (11);
the connecting mechanisms are respectively positioned on the side walls of the connector body (1) and are used for limiting the pipe body (2) and the connector body (1);
and the sealing mechanism is used for ensuring the sealing property after connection.
2. The coal mine intelligent remote liquid supply safety connector is characterized in that the connecting mechanism comprises a connecting box (17) fixedly connected to the side wall of the connector body (1), a connecting groove is formed in one side, close to the pipe body (2), of the connecting box (17), a sliding plate (18) capable of sliding up and down is arranged in the connecting groove, one side, far away from the pipe body (2), of the sliding plate (18) is elastically connected with the corresponding inner wall of the connecting groove through a first spring (15), an electromagnet (21) is fixedly connected to one side, far away from the pipe body (2), of the connecting box (17), the sliding plate (18) has magnetism, after being electrified, the electromagnet (21) and the adjacent surface of the sliding plate (18) are in like-polarity repulsion, a connecting block (22) is connected to the other side of the sliding plate (18), an arc-shaped limiting plate (20) is fixedly connected to the other side of the connecting block (22), and an arc-shaped limiting groove (19) is formed in one side, close to the arc-shaped limiting plate (20), of the pipe body (2).
3. The intelligent remote liquid supply safety connector for the coal mine according to claim 2, further comprising a triggering mechanism, wherein the triggering mechanism comprises a hollow box (4) fixed at the upper end of the connector body (1), a piston plate (8) capable of sliding up and down is arranged in the hollow box (4), a first conductive plate (23) is fixedly connected to the lower end of the piston plate (8), two first electricity-receiving blocks (24) are symmetrically and fixedly connected to the inner bottom of the hollow box (4), and the two first electricity-receiving blocks (24) are electrically connected with a plurality of electromagnets (21).
4. The intelligent remote liquid supply safety connector for the coal mine according to claim 3, wherein a threaded rod (9) is rotatably connected to the inner top of the hollow box (4), the upper end of the threaded rod (9) extends to the outside and is fixedly connected with a twisting block (7), a threaded cylinder is fixedly connected to the upper end of the piston plate (8), and the lower end of the threaded rod (9) extends into the threaded cylinder and is in threaded connection with the inner wall of the threaded cylinder.
5. The intelligent remote liquid supply safety connector for the coal mine according to claim 1, wherein the sealing mechanism comprises a second annular groove (27) arranged on the inner wall of the mounting groove (3), the outer side wall of the pipe body (2) is provided with a plurality of first annular grooves (13), each second annular groove (27) is matched with the corresponding first annular groove (13), each first annular groove (13) is internally provided with an annular inflatable sealing strip (14), each annular inflatable sealing strip (14) is communicated with a communicating pipe (16), the other ends of the communicating pipes (16) are communicated with a main pipe (25), and the other end of the main pipe (25) extends into the inner bottom space of the hollow box (4).
6. The intelligent remote liquid supply safety connector for the coal mine according to claim 5, wherein electromagnetic valves are installed in a plurality of the communicating pipes (16), a push switch is installed on the twisting block (7), and the push switch is electrically connected with the electromagnetic valves.
7. The intelligent remote liquid supply safety connector for the coal mines as claimed in claim 1, wherein a trigger groove (28) is further formed in the inner bottom of each mounting groove (3), each trigger groove (28) is located between two second annular grooves (27) on the outermost side, a piston block (29) capable of sliding up and down is further arranged in each trigger groove (28), a second conductive plate (12) is fixedly connected to the lower end of each piston block (29), the lower end of each second conductive plate (12) is elastically connected with the inner bottom of each trigger groove (28) through a second spring (30), and an annular limiting strip (32) is fixedly connected to the inner wall of each trigger groove (28).
8. The intelligent remote liquid supply safety connector for the coal mine according to claim 7, wherein second electricity connection blocks (31) are embedded in the inner walls of the left side and the right side of each trigger groove (28), every two second electricity connection blocks (31) and the corresponding first conductive plates (23) form an electricity conduction piece, and the two electricity conduction pieces are matched with the alarm (11).
CN202310049278.7A 2023-02-01 2023-02-01 Intelligent remote liquid supply safety connector for coal mine Pending CN115978323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310049278.7A CN115978323A (en) 2023-02-01 2023-02-01 Intelligent remote liquid supply safety connector for coal mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310049278.7A CN115978323A (en) 2023-02-01 2023-02-01 Intelligent remote liquid supply safety connector for coal mine

Publications (1)

Publication Number Publication Date
CN115978323A true CN115978323A (en) 2023-04-18

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Application Number Title Priority Date Filing Date
CN202310049278.7A Pending CN115978323A (en) 2023-02-01 2023-02-01 Intelligent remote liquid supply safety connector for coal mine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117537203A (en) * 2024-01-10 2024-02-09 威海拓力莱纤维有限公司 Sealing connecting piece for carbon fiber composite material pipeline

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117537203A (en) * 2024-01-10 2024-02-09 威海拓力莱纤维有限公司 Sealing connecting piece for carbon fiber composite material pipeline

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