CN116624200A - Emergency cut-off unloading system and method for coal mine working face and hydraulic support - Google Patents
Emergency cut-off unloading system and method for coal mine working face and hydraulic support Download PDFInfo
- Publication number
- CN116624200A CN116624200A CN202310586233.3A CN202310586233A CN116624200A CN 116624200 A CN116624200 A CN 116624200A CN 202310586233 A CN202310586233 A CN 202310586233A CN 116624200 A CN116624200 A CN 116624200A
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- unloading
- hydraulic support
- stop
- electric control
- liquid supply
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- 239000003245 coal Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 238000013500 data storage Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an emergency stop unloading system and method for a high-pressure liquid supply pipeline of a coal mine working face and a hydraulic support. The invention has the advantages that the emergency quick cut-off unloading can be carried out on the main inlet loop of the working face or the single hydraulic support, the emergency quick cut-off or unloading of the working face and the hydraulic support can be realized by remote control, the safety and the reliability are realized, the emergency situations of the working face and the hydraulic support for mines can be conveniently dealt with, the main pipeline cut-off unloading can be carried out on the emergency situation of the single hydraulic support, and the underground safety of the coal mine can be ensured.
Description
Technical Field
The invention relates to a mining working face and a hydraulic support, in particular to an emergency stop unloading system and method for the mining working face and the hydraulic support.
Background
When the underground working condition environment of the coal mine is complex and the emergency stop unloading is needed to be carried out on the main liquid supply pipeline, in the mode adopted at present, no matter the pump station is closed, the stop valve or the emergency stop electrohydraulic main valve is closed, the high-pressure of the main pipeline cannot be effectively, timely and rapidly stopped and unloaded, and the high-pressure still exists in part of the main pipeline, and the timeliness and the high-efficiency of the unloading are deficient, so that the great potential safety hazard is formed. In order to avoid the occurrence of the situation, an electric control cut-off unloading system is adopted, and the system can carry out emergency cut-off unloading on a working surface or main pipelines of a single hydraulic support or a plurality of hydraulic supports at any time even in a pump station starting state, so that the instantaneous, effective and thorough high-pressure unloading in the main pipelines is met; the system can be operated on site, can be remotely controlled in a centralized control center, is safe and reliable, can fully cope with the emergency of the working face, and ensures the safety of the working face.
Disclosure of Invention
Aiming at the problems, the invention provides a system and a method for realizing the emergency cut-off and quick unloading of the liquid supply of a coal mine working face and a main pipeline of a hydraulic support in a remote control manner.
The invention solves the technical problems by adopting the scheme that: the emergency stop unloading system for the coal mine working face and the hydraulic support comprises a centralized control center, a controller, the hydraulic support and an electric control stop unloading valve, wherein the centralized control center comprises a ground centralized control center and an underground centralized control center, the ground centralized control center is connected with the underground centralized control center through a network, the underground centralized control center is connected with the controller, the hydraulic support and the electric control stop unloading valve are connected with the controller and are controlled to be on-off by the controller, and a data storage module is further arranged on the controller; the electric control stop unloading valve consists of an electromagnetic pilot and a stop unloading part, the stop unloading part is connected with a main inlet pipeline and a main return pipeline of a working face, the electromagnetic pilot is remotely controlled by a controller and a centralized control center, and the action of the stop unloading part is controlled by the electromagnetic pilot, so that the remote emergency stop and unloading of the underground high-pressure liquid supply pipeline are realized.
The emergency stop unloading system provided by the invention comprises three liquid supply modes, namely annular liquid supply, non-annular liquid supply and liquid supply in a hydraulic support frame; the front end of the advanced hydraulic support or the head hydraulic support is provided with an electric control stop unloading valve I, and the rear end of the tail hydraulic support is provided with an electric control stop unloading valve II; the first controller controls the head hydraulic support and the first electric control stop unloading valve, and the second controller controls the tail hydraulic support and the second electric control stop unloading valve, so that the liquid supply stop and the loop unloading of the whole working surface are controlled; the annular liquid supply cut-off unloading system comprises two main inlet pipelines and two main return pipelines, wherein the main inlet pipelines comprise a main inlet pipeline of a machine head hydraulic support and a main inlet pipeline of a machine tail hydraulic support, and the main return pipelines comprise a main return pipeline of the machine head hydraulic support and a main return pipeline of the machine tail hydraulic support; the first electric control stop unloading valve is arranged at the front end of the hydraulic support of the machine head, and the first controller controls the hydraulic support of the machine head and the first electric control stop unloading valve so as to control the liquid supply stop and the loop unloading of the whole working surface; the non-annular liquid supply cut-off unloading system comprises a main inlet pipeline of the machine head hydraulic support and a main return pipeline of the machine head hydraulic support, or a main inlet pipeline of the machine tail hydraulic support and a main return pipeline of the machine tail hydraulic support; in the hydraulic support frame internal liquid supply cut-off unloading system, an electric control cut-off unloading valve is mounted at the front end of an electrohydraulic main valve in each hydraulic support frame of a working face and at the rear end of a multi-pass block of the frame, and a controller controls main liquid inlet and return cut-off unloading of a single hydraulic support.
The annular liquid supply and stop unloading system and the non-annular liquid supply and stop unloading system can coexist with the liquid supply and stop unloading system in the hydraulic support frame.
An electrohydraulic main valve, a hydraulic auxiliary valve, a multi-way block of the hydraulic bracket and a jack are arranged in the bracket of the hydraulic bracket.
An emergency stop unloading method based on an emergency stop unloading system of a coal mine working face and a hydraulic support high-pressure liquid supply pipeline comprises the steps that an annular liquid supply stop unloading system is opened, an electric control stop unloading valve I stop unit is closed, an electric control stop unloading valve II stop unit is opened, and an unloading unit is closed, so that liquid supply of the working face is stopped; the first stop unit of the electric control stop unloading valve is opened, and the second stop unit of the electric control stop unloading valve is opened; opening an unloading unit of the first electric control stop unloading valve, and opening an unloading unit of the second electric control stop unloading valve to realize the unloading of the working surface;
the non-annular liquid supply cut-off unloading system is characterized in that an electric control cut-off unloading valve one cut-off unit is opened, and the unloading unit is closed, so that liquid supply cut-off of a working surface is realized; the first stop unit of the electric control stop unloading valve is started, the unloading unit is started, and the unloading of the working face is realized;
the hydraulic support frame is internally provided with a liquid supply stop unloading system, an electric control stop unloading valve stop unit is opened, the unloading unit is closed, and the main liquid inlet of the hydraulic support is stopped; the electric control stop unloading valve stop unit is opened, the unloading unit is opened, the electrohydraulic main valve is closed, and the hydraulic support main liquid return unloading is realized.
The invention has the beneficial effects that: the invention has the advantages that the emergency quick cut-off unloading can be carried out on the main inlet loop of the working face or a single hydraulic support, the emergency quick cut-off or unloading of the working face and the hydraulic support can be met by remote control, the safety and the reliability are realized, and the emergency situations of the working face and the hydraulic support for mines can be conveniently dealt with.
Drawings
FIG. 1 is a working face flow chart of the annular working face emergency electronic control cut-off unloading system of the invention.
FIG. 2 is a working face flow chart of the non-annular working face emergency electronically controlled cutoff unloading system of the present invention.
Fig. 3 is a flow chart of the emergency electric control cut-off unloading system in the hydraulic support frame.
Fig. 4 is a functional diagram of the electrically controlled shut-off unloading valve according to the invention.
FIG. 5 is a schematic diagram of the cut-off state of the annular liquid supply electric control cut-off unloading valve.
FIG. 6 is a schematic diagram of the annular liquid supply electric control cut-off unloading valve in a cut-off unloading state.
FIG. 7 is a schematic diagram of the in-frame liquid supply electric control stop unloading valve in a stop unloading state.
Fig. 8 is a schematic diagram of the in-frame liquid supply electric control cut-off unloading cut-off state.
Description of the embodiments
Example 1: the following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In addition, the meaning of "and/or" appearing throughout the text is to include three side-by-side schemes, for example, "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
As shown in fig. 1, the emergency stop unloading system for a coal mine working face and a hydraulic support of the invention comprises: the electric control stop unloading valve consists of an electromagnetic pilot part and a stop unloading part; the cut-off unloading part consists of two functional units, namely a cut-off unit and an unloading unit; the interface of the cut-off unit is communicated with the main liquid inlet of the working face, and the cut-off function is controlled to be on/off by the electromagnetic pilot valve; the unloading unit is communicated with the main liquid return port of the working surface, and the unloading function is controlled to be on/off by the electromagnetic pilot valve; the hydraulic support comprises an electrohydraulic main valve, a hydraulic auxiliary valve, a multi-pass block of the support and a jack, and is used for supporting coal mining under a mine; the controller is used for controlling the on/off action of the electrohydraulic main valve, controlling the on/off of an electromagnetic pilot part of the electric control stop unloading valve, controlling the stop/unloading action and storing related data; the underground centralized control center is used for controlling a centralized control platform of the underground controller; the ground centralized control center is used for controlling a centralized control platform of the underground network; the control mode of the electric control stop unloading valve is manual control and electric control; manual control, namely electromagnetic pilot of a manual key; the electric control, namely a controller, an underground centralized control center and a ground centralized control center are controlled remotely through an underground network; the electric control stop unloading valve is arranged at the front end of the leading hydraulic support or the nose hydraulic support, the inside of the hydraulic support and the rear end of the tail hydraulic support.
The ground centralized control center is connected with the underground centralized control center through a network, the underground centralized control center is connected with a controller, the hydraulic support and the electric control stop unloading valve are connected with the controller, the controller controls on-off, and the controller is also provided with a data storage module; the electric control stop unloading valve is composed of an electromagnetic pilot and a stop unloading part, wherein the stop unloading part is connected with a main inlet pipeline and a main return pipeline of a working face, the electromagnetic pilot is remotely controlled by a controller and a centralized control center, and the action of the stop unloading part is controlled by the electromagnetic pilot, so that the remote emergency stop and unloading of a downhole high-pressure liquid supply pipeline are realized.
The emergency cut-off unloading system provided by the invention comprises three modes, namely an annular liquid supply cut-off unloading system shown in figure 1, a non-annular liquid supply cut-off unloading system and a liquid supply cut-off unloading system in a hydraulic support frame; the first electric control stop unloading valve is arranged at the front end of the advanced hydraulic support or the head hydraulic support, and the second electric control stop unloading valve is arranged at the rear end of the tail hydraulic support; the first controller controls the head hydraulic support and the first electric control stop unloading valve, and the second controller controls the tail hydraulic support and the second electric control stop unloading valve, so that the liquid supply stop and the loop unloading of the whole working surface are controlled; the annular liquid supply cut-off unloading system comprises a main inlet pipeline of a machine head hydraulic support and a main inlet pipeline of a machine tail hydraulic support; and a main return pipeline of the head hydraulic support and a main return pipeline of the tail hydraulic support.
The non-annular liquid supply cut-off unloading system shown in fig. 2 is characterized in that an electric control cut-off unloading valve I is arranged at the front end of a machine head hydraulic support, and a controller I controls the machine head hydraulic support and the electric control cut-off unloading valve I so as to control liquid supply cut-off and loop unloading of the whole working surface; the non-annular liquid supply cut-off unloading system comprises a main inlet pipeline of a machine head hydraulic support and a main return pipeline of the machine head hydraulic support; or a main inlet pipeline of the hydraulic support at the tail of the machine, and a main return pipeline of the hydraulic support at the tail of the machine.
As shown in fig. 3, in the hydraulic support frame liquid supply stop unloading system, the electric control stop unloading valve is arranged in each hydraulic support frame of the working face, the front end of the electrohydraulic main valve, the rear end of the multi-pass block of the frame, and the controller controls the main liquid inlet and return stop unloading of a single hydraulic support.
The annular liquid supply and stop unloading system can coexist with the liquid supply and stop unloading system in the hydraulic support frame and can also be independently used; the non-annular liquid supply and stop unloading system can coexist in the hydraulic support frame and can also be used independently.
The method for realizing the emergency cut-off unloading of the coal mine working face and the hydraulic support comprises the following steps: as shown in fig. 5 and 6, in the annular liquid supply cut-off unloading system, a first cut-off unit of an electric control cut-off unloading valve is opened, an unloading unit is closed, a second cut-off unit of the electric control cut-off unloading valve is opened, and the unloading unit is closed, so that liquid supply cut-off of a working surface is realized; the first stop unit of the electric control stop unloading valve is opened, and the second stop unit of the electric control stop unloading valve is opened; and the first unloading unit of the electric control stop unloading valve is opened, and the second unloading unit of the electric control stop unloading valve is opened, so that the unloading of the working surface is realized.
The non-annular liquid supply cut-off unloading system is characterized in that an electric control cut-off unloading valve one cut-off unit is opened, and the unloading unit is closed, so that liquid supply cut-off of a working surface is realized; and the first stop unit of the electric control stop unloading valve is started, and the unloading unit is started, so that the unloading of the working surface is realized.
As shown in fig. 7 and 8, the liquid supply cut-off unloading system in the hydraulic support frame, the electric control cut-off unloading valve cut-off unit is opened, the unloading unit is closed, and the main liquid inlet of the hydraulic support is cut off; the electric control stop unloading valve stop unit is opened, the unloading unit is opened, the electrohydraulic main valve is closed, and the hydraulic support main liquid return unloading is realized.
The foregoing has outlined the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims.
Claims (4)
1. The emergency stop unloading system for the coal mine working face and the hydraulic support is characterized by comprising a centralized control center, a controller, the hydraulic support and an electric control stop unloading valve, wherein the centralized control center comprises a ground centralized control center and an underground centralized control center, the ground centralized control center is connected with the underground centralized control center through a network, the underground centralized control center is connected with the controller, the hydraulic support and the electric control stop unloading valve are connected with the controller, the controller is used for controlling the on-off state, and a data storage module is further arranged on the controller;
the electric control stop unloading valve consists of an electromagnetic pilot and a stop unloading part, the stop unloading part is connected with a main inlet pipeline and a main return pipeline of a working face, the electromagnetic pilot is remotely controlled by the controller and the centralized control center, and the action of the stop unloading part is controlled by the electromagnetic pilot, so that the remote emergency stop and unloading of the underground high-pressure liquid supply pipeline are realized;
the system comprises three liquid supply modes, namely annular liquid supply, non-annular liquid supply and liquid supply in a hydraulic support frame;
the front end of the advanced hydraulic support or the head hydraulic support is provided with an electric control stop unloading valve I, and the rear end of the tail hydraulic support is provided with an electric control stop unloading valve II; the first controller controls the head hydraulic support and the first electric control stop unloading valve, and the second controller controls the tail hydraulic support and the second electric control stop unloading valve, so that the liquid supply stop and the loop unloading of the whole working surface are controlled; the annular liquid supply cut-off unloading system comprises two main inlet pipelines and two main return pipelines, wherein the main inlet pipelines comprise a main inlet pipeline of a machine head hydraulic support and a main inlet pipeline of a machine tail hydraulic support, and the main return pipelines comprise a main return pipeline of the machine head hydraulic support and a main return pipeline of the machine tail hydraulic support;
the first electric control stop unloading valve is arranged at the front end of the hydraulic support of the machine head, and the first controller controls the hydraulic support of the machine head and the first electric control stop unloading valve so as to control the liquid supply stop and the loop unloading of the whole working surface; the non-annular liquid supply cut-off unloading system comprises a main inlet pipeline of the machine head hydraulic support and a main return pipeline of the machine head hydraulic support, or a main inlet pipeline of the machine tail hydraulic support and a main return pipeline of the machine tail hydraulic support;
in the hydraulic support frame internal liquid supply cut-off unloading system, an electric control cut-off unloading valve is mounted at the front end of an electrohydraulic main valve in each hydraulic support frame of a working face and at the rear end of a multi-pass block of the frame, and a controller controls main liquid inlet and return cut-off unloading of a single hydraulic support.
2. The emergency stop unloading system for the coal mine working face and the hydraulic support according to claim 1, wherein the annular liquid supply stop unloading system and the non-annular liquid supply stop unloading system can coexist with the liquid supply stop unloading system in the hydraulic support.
3. The emergency stop unloading system for the coal mine working face and the hydraulic support according to claim 1, wherein an electrohydraulic main valve, a hydraulic auxiliary valve, a multi-way block of the hydraulic support and a jack are arranged in the support of the hydraulic support.
4. An emergency stop unloading method based on an emergency stop unloading system of a coal mine working face and a hydraulic support high-pressure liquid supply pipeline is characterized in that the annular liquid supply stop unloading system is characterized in that an electric control stop unloading valve I stop unit is opened, an unloading unit is closed, an electric control stop unloading valve II stop unit is opened, and the unloading unit is closed, so that liquid supply stop of the working face is realized; the first stop unit of the electric control stop unloading valve is opened, and the second stop unit of the electric control stop unloading valve is opened; opening an unloading unit of the first electric control stop unloading valve, and opening an unloading unit of the second electric control stop unloading valve to realize the unloading of the working surface;
the non-annular liquid supply cut-off unloading system is characterized in that an electric control cut-off unloading valve one cut-off unit is opened, and the unloading unit is closed, so that liquid supply cut-off of a working surface is realized; the first stop unit of the electric control stop unloading valve is started, the unloading unit is started, and the unloading of the working face is realized;
the hydraulic support frame is internally provided with a liquid supply stop unloading system, an electric control stop unloading valve stop unit is opened, the unloading unit is closed, and the main liquid inlet of the hydraulic support is stopped; the electric control stop unloading valve stop unit is opened, the unloading unit is opened, the electrohydraulic main valve is closed, and the hydraulic support main liquid return unloading is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310586233.3A CN116624200A (en) | 2023-05-23 | 2023-05-23 | Emergency cut-off unloading system and method for coal mine working face and hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310586233.3A CN116624200A (en) | 2023-05-23 | 2023-05-23 | Emergency cut-off unloading system and method for coal mine working face and hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116624200A true CN116624200A (en) | 2023-08-22 |
Family
ID=87612792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310586233.3A Pending CN116624200A (en) | 2023-05-23 | 2023-05-23 | Emergency cut-off unloading system and method for coal mine working face and hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116624200A (en) |
-
2023
- 2023-05-23 CN CN202310586233.3A patent/CN116624200A/en active Pending
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