CN113513355A - Full-servo safety interlocking air door and control method - Google Patents
Full-servo safety interlocking air door and control method Download PDFInfo
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- CN113513355A CN113513355A CN202110412846.6A CN202110412846A CN113513355A CN 113513355 A CN113513355 A CN 113513355A CN 202110412846 A CN202110412846 A CN 202110412846A CN 113513355 A CN113513355 A CN 113513355A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 5
- 229920002396 Polyurea Polymers 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/10—Air doors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B51/00—Operating or controlling locks or other fastening devices by other non-mechanical means
- E05B51/02—Operating or controlling locks or other fastening devices by other non-mechanical means by pneumatic or hydraulic means
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
- E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/10—Air doors
- E21F1/12—Devices for automatically opening air doors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a full-servo safety interlocking air door which comprises two air doors, wherein each air door comprises two door columns, a left door leaf and a right door leaf are symmetrically arranged between the two door columns, the left door leaf and the right door leaf are both arc-shaped door leaves with the same structure, and a plurality of transverse ribs are arranged on the arc-shaped door leaves from top to bottom; a top box is arranged above the door post and comprises a rectangular frame and a triangular frame which are fixedly connected into a whole, the length of the rectangular frame is the same as the width of the air door, the width of the rectangular frame is the same as the width of the door post, and the vertex angle alpha of the triangular frame is 140 degrees; the air door structure is characterized by further comprising two sets of pneumatic components for driving the left door leaf and the right door leaf and a set of air path control system for controlling the pneumatic components, and the two air doors are opened, closed and interlocked through the air path control system. The invention also discloses a full-servo safety interlocking air door and a control method. The invention can solve the problems that the door body of the door leaf of the existing mine air door is easy to deform, elements are easy to damage and the two air doors cannot be interlocked.
Description
Technical Field
The invention relates to the technical field of ventilation control under a mine, in particular to a full-servo safety interlocking air door and a control method.
Background
In order to meet the requirements of good air environment and safe production in a mine, large ventilation equipment is arranged at a coal mine port to forcibly supply air to the mine, the whole mine is filled with the supplied fresh air, in order to reduce the artificial air supply loss, two air doors are arranged in a roadway under the coal mine, the air supply loss can be avoided, the two doors only can be opened to pass through according to the passing rule, the other door is in a closed state, when a pedestrian or a vehicle enters from any direction of the roadway, one air door is opened, the other air door is in a closed state, and when one air door is closed, the other air door can be opened to prevent the two doors from being opened, so that the air current is short-circuited to cause potential safety hazards and influence the safety of the coal mine.
Generally, the air door leaf under the mine is a flat plate structure, and two door leaves are on the same plane, namely the opening stroke angle of the door leaf is 180 degrees, if the pressure of wind pressure vertically acts on the door body for a long time, the door body is easy to deform, the service life is short, and the door leaf is difficult to open when the negative pressure is large. And pneumatic elements, cylinders, electric control elements and the like are exposed, and are extremely easy to damage under complex environment conditions under a mine. In addition, although the air doors can be opened and closed respectively through pneumatic elements under the control of an electric control element, the front air door and the rear air door do not have an automatic interlocking function, so that the state that one door is opened and the other door is closed cannot be stably and reliably maintained, the two doors are easily opened at the same time, the air current is short-circuited to cause potential safety hazards, and the normal production of a mine is influenced.
Disclosure of Invention
The invention aims to provide a full-servo safety interlocking air door and a control method, which are used for solving the problems that the door body of the door leaf of the existing mine air door is easy to deform, elements are easy to damage, and two air doors cannot be interlocked.
In order to solve the problems, the invention adopts the following technical scheme:
the full-servo safety interlocking air door comprises two air doors, each air door comprises two door columns, a left door leaf and a right door leaf are symmetrically arranged between the two door columns, the left door leaf and the right door leaf are both arc-shaped door leaves with the same structure, and a plurality of transverse ribs are arranged on the arc-shaped door leaves from top to bottom;
a top box is respectively arranged above two doorposts of each air door, each top box comprises a rectangular frame and a triangular frame which are fixedly connected into a whole, the length of each rectangular frame is the same as the width of each air door, the width of each rectangular frame is the same as the width of each doorpost, each triangular frame is arranged at one side close to each of the left door leaf and the right door leaf, the vertex angle alpha of each triangular frame is 140 degrees, and the closing angle of each left door leaf and each right door leaf is 140 degrees;
the air door structure is characterized by further comprising two sets of pneumatic components for driving the left door leaf and the right door leaf and a set of air path control system for controlling the pneumatic components, the air path control system is installed in the top box and the door post, each set of pneumatic components respectively comprises two driving cylinders corresponding to the left door leaf and the right door leaf respectively, cylinder bases of the driving cylinders are installed on the rectangular frame through hinged supports, piston rods of the driving cylinders are hinged to the corresponding left door leaf or right door leaf, and the air doors are opened and closed and interlocked through the air path control system.
Optionally, the gas path control system comprises a main gas inlet valve, a gas source processing element, a gas path a and a gas path B, wherein the gas source processing element is respectively connected with the gas path a and the gas path B through a tee;
the gas circuit A and the gas circuit B have the same structure, and the gas circuit A and the gas circuit B respectively comprise a two-position three-way pilot valve, a first two-position three-way hand-pulled valve, a second two-position three-way hand-pulled valve, a large two-position five-way locking valve and a small two-position five-way locking valve;
under the normal state, the respective working ports A of the two-position three-way pilot valve, the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are communicated with the exhaust port R, and the respective working ports A of the large two-position five-way locking valve and the small two-position five-way locking valve are communicated with the air inlet P;
in a ventilation state, the working ports A of the two-position three-way pilot valve, the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are communicated with the air inlet P, and the working ports B of the large two-position five-way locking valve and the small two-position five-way locking valve are communicated with the air inlet P;
the working port A of the two-position three-way pilot valve is connected with an air source processing element, the air inlet P of the two-position three-way pilot valve is respectively connected with the air inlet P of a first two-position three-way hand-pulled valve and a second two-position three-way hand-pulled valve through a tee, the working port A of the first two-position three-way hand-pulled valve is mutually connected with the working port A of the second two-position three-way hand-pulled valve, and the exhaust port R of the first two-position three-way hand-pulled valve and the exhaust port R of the second two-position three-way hand-pulled valve are respectively connected with the control port of the big two-position five-way locking valve;
the air inlet P of the large two-position five-way locking valve is connected with an air source processing element, the working port B of the large two-position five-way locking valve is respectively connected with the control ports of the rear cavity air supply pipe and the small two-position five-way locking valve through a tee joint, the working port A of the large two-position five-way locking valve is respectively connected with the air inlet P of the front cavity air supply pipe and the small two-position five-way locking valve through a tee joint, the working port A of the small two-position five-way locking valve in the air passage A is connected with the control port of the two-position three-way pilot valve of the air passage B through a first pilot control air pipe, and the working port A of the small two-position five-way locking valve in the air passage B is connected with the control port of the two-position three-way pilot valve of the air passage A through a second pilot control air pipe;
the air path A corresponds to the first air door, the air path B corresponds to the second air door, the back cavity air supply pipes in the two air paths are respectively communicated with the back cavities of the driving cylinders in the corresponding air doors through air pipes, and the front cavity air supply pipes in the two air paths are respectively communicated with the front cavities of the driving cylinders in the corresponding air doors through air pipes.
Optionally, the gas circuit a and the gas circuit B further include a one-way throttle valve respectively, and the one-way throttle valve is connected to the exhaust port R of the first two-position three-way hand-pulled valve and the exhaust port R of the second two-position three-way hand-pulled valve respectively.
Optionally, the air source treatment element comprises an air filter, a pressure relief valve, and an oil mist.
Optionally, the first two-position three-way hand-pulling valve and the second two-position three-way hand-pulling valve are respectively and correspondingly arranged on the front side and the rear side of the air door.
Optionally, the pneumatic assembly further comprises a pressure relief cylinder, a cylinder seat of the pressure relief cylinder is installed in the top box through a hinged support, a piston rod of the pressure relief cylinder extends out and then is in top pressing contact with the left door leaf or the right door leaf, a rear cavity of the pressure relief cylinder is connected with a rear cavity air supply pipe in the air path through an air pipe, and a front cavity of the pressure relief cylinder is connected with a front cavity air supply pipe in the air path through an air pipe.
Optionally, keels of the top box and the doorpost are all made of square steel pipes, skins on two surfaces of the arc-shaped door leaf are steel plates, and polyurea is sprayed on the surfaces of the steel plates.
Optionally, a standard pedestrian door is arranged on one of the arc-shaped door leaves of each air door, and an observation window is arranged on each arc-shaped door leaf.
The full-servo safety interlocking air door control method comprises the following steps:
a. the air source enters the air source processing element through the air inlet main valve, and is conveyed to the whole system after being processed by filtration and the like;
b. opening one of the air doors: opening a first two-position three-way hand-pulling valve or a second two-position three-way hand-pulling valve in the air passage A, connecting a control air passage of the first air door, reversing the large two-position five-way locking valve after an air source reaches the large two-position five-way locking valve of the air passage A, and conveying the air source to the rear cavities of each driving cylinder and each pressure relief cylinder of the first air door through a working port B of the large two-position five-way locking valve to push a left door leaf and a right door leaf of the first air door to be opened simultaneously;
c. and (3) locking the other air door: meanwhile, an air source is communicated to a control port of the small two-position five-way locking valve through a working port B of the large two-position five-way locking valve, the small two-position five-way locking valve is reversed, an air inlet of the small two-position five-way locking valve is cut off, no air source exists in the first pilot control air pipe, and therefore the two-position three-way pilot valve in the second air door is in a closed state.
The reversing process of the large two-position five-way locking valve in the step b is as follows: the air source directly and sequentially passes through the large two-position five-way locking valve, the small two-position five-way locking valve and the second pilot control air pipe in the air path B from the air source processing element to reach a control port of the two-position three-way pilot valve in the air path A, so that the working port A of the two-position three-way pilot valve in the air path A is communicated with the air inlet P, and the air source is discharged from the two-position three-way pilot valve and then passes through the first two-position three-way hand-pulled valve or the second two-position three-way hand-pulled valve to reach the control port of the large two-position five-way locking valve, so that the large two-position five-way locking valve is reversed.
By adopting the technical scheme, the invention has the following advantages:
the door body is in an arc-shaped design, the deformation resistance is enhanced compared with that of a flat door leaf, the two doors are in oblique butt joint, the pressure of wind pressure acts on the door body, and the pressure of the wind pressure vertical to the door body can be reduced because the door body is in oblique butt joint; meanwhile, the door body is designed in an arc shape, and transverse ribs are arranged on the upper part and the lower part, so that the structure has deformation resistance compared with a flat door; meanwhile, the top box structure of the invention changes the closing angle of the left door leaf and the right door leaf from 180 degrees of the flat door to 140 degrees, and if the closing angle of the two doors is a plane structure with 180 degrees, once the pressure deformation exceeds 180 degrees, the pressure resistance is zero, so that the design not only avoids the problem that the pressure resistance is zero, but also greatly increases the power for opening the door leaves when the negative pressure is overlarge.
According to the invention, the two air passages of the air passage control system are connected with the two air doors, so that the opening, closing and mutual locking functions are realized, when the first air door is opened, the second air door is locked, the potential safety hazard under a mine is reduced, and the safe production of the mine is facilitated.
Drawings
FIG. 1 is a gas path control schematic of the present invention;
FIG. 2 is a top plan view of the top box structure of the present invention;
FIG. 3 is a schematic view of the gas path when the first damper of the present invention is opened (in the open state of the first two-position three-way hand-pulled valve);
FIG. 4 is a schematic view of the air path when the first damper of the present invention is open (in the second two-position three-way hand-pulled valve open state);
FIG. 5 is a front view of the present invention;
FIG. 6 is a schematic view of the open position of the damper of the present invention.
Reference numerals: 1. the air inlet valve comprises an air inlet main valve, 2, an air source processing element, 3 or 11, a two-position three-way pilot valve, 4 or 12, a second two-position three-way hand-pulling valve, 5 or 13, a first two-position three-way hand-pulling valve, 6 or 14, a large two-position five-way locking valve, 7 or 10, a small two-position five-way locking valve, 8 or 9, a one-way throttle valve, 15, a driving cylinder, 16, a pressure relief cylinder, 17, a left door leaf, 18, a right door leaf, 19, a top box, 20, a door post, 21, an air path control system, 22, a transverse rib, 23, a rear cavity air supply pipe, 24, a front cavity air supply pipe, 25, a first pilot control air pipe, 26, a second pilot control air pipe, 27, a standard pedestrian door and 28, a lookout window.
Detailed Description
In order to make the technical purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention are further described below with reference to fig. 1 to 6 and specific embodiments.
Example of a full servo safety interlock damper:
the full-servo safety interlocking air door comprises two air doors, each air door comprises two door columns 20, a left door leaf 17 and a right door leaf 18 are symmetrically arranged between the two door columns 20, the left door leaf 17 and the right door leaf 18 are arc-shaped door leaves with the same structure, a plurality of transverse ribs 22 are arranged on the arc-shaped door leaves from top to bottom, the door body is in an arc-shaped design, the deformation resistance is enhanced compared with that of a flat door leaf, the two door leaves are obliquely butted, the pressure of air pressure acts on the door body, and the pressure of the air pressure perpendicular to the door body can be reduced because the door body is obliquely butted; meanwhile, the door body is designed in an arc shape, and the upper part and the lower part of the door body are provided with the transverse ribs 22, so that the structure has better deformation resistance than a flat door;
a top box 19 is respectively arranged above two doorposts 20 of each air door, the top box 19 comprises a rectangular frame and a triangular frame which are fixedly connected into a whole, the length of the rectangular frame is the same as the width of the air door, the width of the rectangular frame is the same as the width of the doorpost 20, the triangular frame is arranged on one side close to a left door leaf 17 and a right door leaf 18, the vertex angle alpha of the triangular frame is 140 degrees, and the closing angle of the left door leaf 17 and the closing angle of the right door leaf 18 are 140 degrees.
The top box 19 structure makes the left door leaf 17 and the right door leaf 18 closed angle change from 180 of flat door to 140, if the two door closed angle is 180 planar structure, once the pressure deformation exceeds 180 after the compressive deformation is zero, the design not only avoids the problem of zero compressive stress, but also greatly increases the door leaf opening power when the negative pressure is too large.
The invention also comprises two groups of pneumatic components for driving the left door leaf 17 and the right door leaf 18 and a set of air path control system 21 for controlling the pneumatic components, wherein the air path control system 21 is arranged in the top box 19 and the door post 20, each group of pneumatic components respectively comprises two driving cylinders 15 respectively corresponding to the left door leaf 17 and the right door leaf 18, the cylinder bases of the driving cylinders 15 are arranged on the rectangular frame through hinged supports, the piston rods of the driving cylinders 15 are hinged with the corresponding left door leaf 17 or the right door leaf 18, and the two air doors are opened, closed and interlocked through the air path control system 21.
As one embodiment of the present invention, the gas path control system 21 includes a main gas inlet valve 1, a gas source processing element 2, a gas path a and a gas path B, and the gas source processing element 2 is respectively connected to the gas path a and the gas path B through a tee;
the structure of the gas circuit A is the same as that of the gas circuit B, the gas circuit A comprises a two-position three-way pilot valve 3, a first two-position three-way hand-pulled valve 5, a second two-position three-way hand-pulled valve 4, a large two-position five-way locking valve 6 and a small two-position five-way locking valve 7, the gas circuit B comprises a two-position three-way pilot valve 11, a first two-position three-way hand-pulled valve 13, a second two-position three-way hand-pulled valve 12, a large two-position five-way locking valve 14 and a small two-position five-way locking valve 10, the two-position three-way pilot valve, the first two-position three-way hand-pulled valve, the second two-position three-way hand-pulled valve, the large two-position five-way locking valve and the small two-position five-way locking valve are all pneumatic control valves, the pneumatic control valves are all of the existing structures, and the detailed structure is not repeated;
under the normal state, the respective working ports A of the two-position three-way pilot valve, the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are communicated with the exhaust port R, and the respective working ports A of the large two-position five-way locking valve and the small two-position five-way locking valve are communicated with the air inlet P;
in a ventilation state, the working ports A of the two-position three-way pilot valve, the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are communicated with the air inlet P, and the working ports B of the large two-position five-way locking valve and the small two-position five-way locking valve are communicated with the air inlet P;
working ports A of the two-position three- way pilot valves 3 and 11 are connected with the air source processing element 2, air inlets P of the two-position three- way pilot valves 3 and 11 are respectively connected with air inlets P of first two-position three-way hand-pulled valves 5 and 13 and second two-position three-way hand-pulled valves 4 and 12 through a tee, the working ports A of the first two-position three-way hand-pulled valves 5 and 13 and the working ports A of the second two-position three-way hand-pulled valves 4 and 12 are mutually connected, and exhaust ports R of the first two-position three-way hand-pulled valves 5 and 13 and exhaust ports R of the second two-position three-way hand-pulled valves 4 and 12 are respectively connected with control ports of big two-position five- way locking valves 6 and 14;
the air inlets P of the large two-position five- way locking valves 6 and 14 are connected with the air source processing element 2, the working ports B of the large two-position five- way locking valves 6 and 14 are respectively connected with the control ports of the rear cavity air supply pipe 23 and the small two-position five- way locking valves 7 and 10 through a tee joint, the working ports A of the large two-position five- way locking valves 6 and 14 are respectively connected with the air supply pipe 24 of the front cavity and the air inlets P of the small two-position five- way locking valves 7 and 10 through a tee joint, the working ports A of the small two-position five- way locking valves 7 and 10 in the air passage A are connected with the control ports of the two-position three- way pilot valves 3 and 11 in the air passage B through a first pilot control air pipe 25, and the working ports A of the small two-position five- way locking valves 7 and 10 in the air passage B are connected with the control ports of the two-position three- way pilot valves 3 and 11 in the air passage A through a second pilot control air pipe 26;
the air path A corresponds to a first air door, the air path B corresponds to a second air door, the rear cavity air supply pipes 23 in the two air paths are respectively communicated with the rear cavities of the driving cylinders 15 in the corresponding air doors through air pipes, and the front cavity air supply pipes 24 in the two air paths are respectively communicated with the front cavities of the driving cylinders 15 in the corresponding air doors through air pipes.
As one embodiment of the present invention, the air path a includes a one-way throttle valve 8, the air path B includes a one-way throttle valve 9, and the one- way throttle valves 8 and 9 are respectively connected to the exhaust port R of the first two-position three-way hand-pulled valve and the exhaust port R of the second two-position three-way hand-pulled valve. A one-way throttle valve may be used for exhaust.
The air source processing element 2 comprises an air filter, a pressure reducing valve and an oil atomizer as one embodiment of the invention.
As one embodiment of the present invention, the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are respectively and correspondingly disposed on the front side and the rear side of the damper. Through setting up first two-position tee bend hand power valve and the second two-position tee bend hand power valve in the air door both sides, all can control the air door from the front and back side of air door and open the door in order to carry out the through-flow.
As one embodiment of the present invention, the pneumatic assembly further includes a pressure relief cylinder 16, a cylinder base of the pressure relief cylinder 16 is installed in the top box 19 through a hinged support, a piston rod of the pressure relief cylinder 16 extends out and then is in pressing contact with the left door leaf 17 or the right door leaf 18, a rear cavity of the pressure relief cylinder 16 is connected with a rear cavity air supply pipe 23 in the air path through an air pipe, and a front cavity of the pressure relief cylinder 16 is connected with a front cavity air supply pipe 24 in the air path through an air pipe. Because the left door leaf 17 or the right door leaf 18 is opened against the wind, when the door is opened, the pressure relief air cylinder 16 pushes the left door leaf 17 or the right door leaf 18, so that the resistance of opening the door can be reduced.
As one embodiment of the invention, the keels of the top box 19 and the doorpost 20 are both square steel tubes, the outer skins of the two surfaces of the arc-shaped door leaf are steel plates, and polyurea is sprayed on the surfaces of the steel plates. The polyurea material has flame retardant, strong corrosion resistance and high elasticity, and can effectively improve the double-sided safety of the door leaf.
As one embodiment of the invention, a standard pedestrian door 27 is arranged on one of the arc-shaped door leaves of each air door, and a lookout window 28 is arranged on each arc-shaped door leaf.
The air path control system 21 of the invention is connected with two air doors through two air paths to realize the functions of opening, closing and mutual locking, and the specific implementation mode is as follows:
as shown in fig. 1, fig. 3 and fig. 4, the air source enters the air source processing element 2 through the air inlet main valve 1, and is delivered to the whole system after being processed by filtering and the like, in the air path a, when any one of the first two-position three-way hand-operated valve 5 and the second two-position three-way hand-operated valve 4 (respectively and correspondingly arranged on the front side and the rear side of the air door) in the air path a is opened, the control air path of the first air door is switched on, and two results are obtained:
(1) after the air source reaches the large two-position five-way locking valve 6 of the air path A, the large two-position five-way locking valve 6 is reversed, and the air source is conveyed to the rear cavities of the driving cylinder 15 and the pressure relief cylinder 16 of the first air door through the working port B of the large two-position five-way locking valve 6 to push the left door leaf 17 and the right door leaf 18 of the first air door to be opened;
(2) meanwhile, the air source is changed over from the working port B of the big two-position five-way locking valve 6 to the control port of the small two-position five-way locking valve 7, the air inlet of the small two-position five-way locking valve 7 is cut off, so that no air source exists in the first pilot control air pipe 25, the two-position three-way pilot valve 11 in the second air door is in a closed state, no matter whether the first two-position three-way hand-pulling valve 13 or the second two-position three-way hand-pulling valve 12 in the air passage B is opened or not, the air source cannot reach the control port of the big two-position five-way locking valve 14, no pilot pressure exists at the control port of the big two-position five-way locking valve 14, the air source cannot provide power for the driving air cylinder 15 of the second air door through the big two-position five-way locking valve 14 in the air passage B, and the second air door can still be in a closed state, so that locking is formed.
As shown in fig. 3 or fig. 4, in the control gas path of the first damper, the gas source can directly and sequentially pass through the large two-position five-way latching valve 14, the small two-position five-way latching valve 10 and the second pilot control gas pipe 26 in the gas path B from the gas source processing element 2 to reach the control port of the two-position three-way pilot valve 3 in the gas path a, so that the working port a of the two-position three-way pilot valve 3 in the gas path a is communicated with the gas inlet P, and the gas source passes through the first two-position three-way hand-pulled valve 5 or the second two-position three-way hand-pulled valve 4 after coming out of the two-position three-way pilot valve 3 to reach the control port of the large two-position five-way latching valve 6, so that the large two-position five-way latching valve 6 is reversed.
Similarly, when any one of the first two-position three-way hand-operated valve and the second two-position three-way hand-operated valve (respectively correspondingly arranged on the front side and the rear side of the air door) in the air circuit B is opened, the control air circuit of the second air door is switched on, and two results are also obtained:
(1) after the air source reaches the large two-position five-way locking valve of the air path B, the large two-position five-way locking valve is reversed, and the air source is conveyed to the rear cavities of the driving cylinder 15 and the pressure relief cylinder 16 of the second air door through the working port B of the large two-position five-way locking valve to push the left door leaf 17 and the right door leaf 18 of the second air door to be opened;
(2) meanwhile, the air source is changed over from the working port B of the big two-position five-way locking valve to the control port of the small two-position five-way locking valve, the air inlet of the small two-position five-way locking valve is cut off, and no air source exists in the second pilot control air pipe 26, so that the two-position three-way pilot valve in the first air door is in a closed state, no matter whether the first two-position three-way hand-pulled valve or the second two-position three-way hand-pulled valve in the air passage A is opened or not, the air source cannot reach the control port of the big two-position five-way locking valve, the control port of the big two-position five-way locking valve does not have pilot pressure, the air source cannot provide power for the driving air cylinder 15 of the first air door through the big two-position five-way locking valve in the air passage A, and the first air door can still be in a closed state, namely, and locking is formed.
In the control gas path of the second air door, the gas source can directly and sequentially reach the control port of the two-position three-way pilot valve of the gas path B from the gas source processing element 2 through the large two-position five-way locking valve and the small two-position five-way locking valve in the gas path A and the second pilot control gas pipe 26, so that the working port A of the two-position three-way pilot valve of the gas path B is communicated with the gas inlet P, and the gas source reaches the control port of the large two-position five-way locking valve through the first two-position three-way hand-pull valve or the second two-position three-way hand-pull valve after coming out of the two-position three-way pilot valve, so that the large two-position five-way locking valve is reversed.
The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. Full servo safety interlock air door, including two air doors, every air door all includes two gateposts, and left door leaf and right door leaf, its characterized in that are installed to the symmetry between two gateposts: the left door leaf and the right door leaf are arc-shaped door leaves with the same structure, and a plurality of transverse ribs are arranged on the arc-shaped door leaves from top to bottom;
a top box is respectively arranged above two doorposts of each air door, each top box comprises a rectangular frame and a triangular frame which are fixedly connected into a whole, the length of each rectangular frame is the same as the width of each air door, the width of each rectangular frame is the same as the width of each doorpost, each triangular frame is arranged at one side close to each of the left door leaf and the right door leaf, the vertex angle alpha of each triangular frame is 140 degrees, and the closing angle of each left door leaf and each right door leaf is 140 degrees;
the air door structure is characterized by further comprising two sets of pneumatic components for driving the left door leaf and the right door leaf and a set of air path control system for controlling the pneumatic components, the air path control system is installed in the top box and the door post, each set of pneumatic components respectively comprises two driving cylinders corresponding to the left door leaf and the right door leaf respectively, cylinder bases of the driving cylinders are installed on the rectangular frame through hinged supports, piston rods of the driving cylinders are hinged to the corresponding left door leaf or right door leaf, and the air doors are opened and closed and interlocked through the air path control system.
2. The full servo safety interlock damper of claim 1, wherein: the gas path control system comprises a main gas inlet valve, a gas source processing element, a gas path A and a gas path B, wherein the gas source processing element is respectively connected with the gas path A and the gas path B through a tee joint;
the gas circuit A and the gas circuit B have the same structure, and the gas circuit A and the gas circuit B respectively comprise a two-position three-way pilot valve, a first two-position three-way hand-pulled valve, a second two-position three-way hand-pulled valve, a large two-position five-way locking valve and a small two-position five-way locking valve;
under the normal state, the respective working ports A of the two-position three-way pilot valve, the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are communicated with the exhaust port R, and the respective working ports A of the large two-position five-way locking valve and the small two-position five-way locking valve are communicated with the air inlet P;
in a ventilation state, the working ports A of the two-position three-way pilot valve, the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are communicated with the air inlet P, and the working ports B of the large two-position five-way locking valve and the small two-position five-way locking valve are communicated with the air inlet P;
the working port A of the two-position three-way pilot valve is connected with an air source processing element, the air inlet P of the two-position three-way pilot valve is respectively connected with the air inlet P of a first two-position three-way hand-pulled valve and a second two-position three-way hand-pulled valve through a tee, the working port A of the first two-position three-way hand-pulled valve is mutually connected with the working port A of the second two-position three-way hand-pulled valve, and the exhaust port R of the first two-position three-way hand-pulled valve and the exhaust port R of the second two-position three-way hand-pulled valve are respectively connected with the control port of the big two-position five-way locking valve;
the air inlet P of the large two-position five-way locking valve is connected with an air source processing element, the working port B of the large two-position five-way locking valve is respectively connected with the control ports of the rear cavity air supply pipe and the small two-position five-way locking valve through a tee joint, the working port A of the large two-position five-way locking valve is respectively connected with the air inlet P of the front cavity air supply pipe and the small two-position five-way locking valve through a tee joint, the working port A of the small two-position five-way locking valve in the air passage A is connected with the control port of the two-position three-way pilot valve of the air passage B through a first pilot control air pipe, and the working port A of the small two-position five-way locking valve in the air passage B is connected with the control port of the two-position three-way pilot valve of the air passage A through a second pilot control air pipe;
the air path A corresponds to the first air door, the air path B corresponds to the second air door, the back cavity air supply pipes in the two air paths are respectively communicated with the back cavities of the driving cylinders in the corresponding air doors through air pipes, and the front cavity air supply pipes in the two air paths are respectively communicated with the front cavities of the driving cylinders in the corresponding air doors through air pipes.
3. The full servo safety interlock damper of claim 2, wherein: the gas circuit A and the gas circuit B respectively comprise a one-way throttle valve, and the one-way throttle valve is respectively connected with the exhaust port R of the first two-position three-way hand-pulled valve and the exhaust port R of the second two-position three-way hand-pulled valve.
4. The full servo safety interlock damper of claim 2, wherein: the air source processing element comprises an air filter, a pressure reducing valve and an oil atomizer.
5. The full servo safety interlock damper of claim 2, wherein: the first two-position three-way hand-pulled valve and the second two-position three-way hand-pulled valve are respectively and correspondingly arranged on the front side and the rear side of the air door.
6. The full servo safety interlock damper of claim 2, wherein: the pneumatic assembly further comprises a pressure relief air cylinder, a cylinder base of the pressure relief air cylinder is installed in the top box through a hinged support, a piston rod of the pressure relief air cylinder stretches out and then is in jacking contact with the left door leaf or the right door leaf, a rear cavity of the pressure relief air cylinder is connected with a rear cavity air supply pipe in the air path through an air pipe, and a front cavity of the pressure relief air cylinder is connected with a front cavity air supply pipe in the air path through an air pipe.
7. The full servo safety interlock damper of claim 2, wherein: the keels of the top box and the doorpost are all made of square steel pipes, skins on the two surfaces of the arc-shaped door leaf are steel plates, and polyurea is sprayed on the surfaces of the steel plates.
8. The full servo safety interlock damper of claim 2, wherein: and a standard pedestrian door is arranged on one of the arc-shaped door leaves of each air door, and an observation window is arranged on each arc-shaped door leaf.
9. The full-servo safety interlocking air door control method is characterized by comprising the following steps: the method comprises the following steps:
a. the air source enters the air source processing element through the air inlet main valve, and is conveyed to the whole system after being processed by filtration and the like;
b. opening one of the air doors: opening a first two-position three-way hand-pulling valve or a second two-position three-way hand-pulling valve in the air passage A, connecting a control air passage of the first air door, reversing the large two-position five-way locking valve after an air source reaches the large two-position five-way locking valve of the air passage A, and conveying the air source to the rear cavities of each driving cylinder and each pressure relief cylinder of the first air door through a working port B of the large two-position five-way locking valve to push a left door leaf and a right door leaf of the first air door to be opened simultaneously;
c. and (3) locking the other air door: meanwhile, an air source is communicated to a control port of the small two-position five-way locking valve through a working port B of the large two-position five-way locking valve, the small two-position five-way locking valve is reversed, an air inlet of the small two-position five-way locking valve is cut off, no air source exists in the first pilot control air pipe, and therefore the two-position three-way pilot valve in the second air door is in a closed state.
10. The full servo safety interlock damper control method of claim 9, wherein: the reversing process of the large two-position five-way locking valve in the step b is as follows: the air source directly and sequentially passes through the large two-position five-way locking valve, the small two-position five-way locking valve and the second pilot control air pipe in the air path B from the air source processing element to reach a control port of the two-position three-way pilot valve in the air path A, so that the working port A of the two-position three-way pilot valve in the air path A is communicated with the air inlet P, and the air source is discharged from the two-position three-way pilot valve and then passes through the first two-position three-way hand-pulled valve or the second two-position three-way hand-pulled valve to reach the control port of the large two-position five-way locking valve, so that the large two-position five-way locking valve is reversed.
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| CN202110412846.6A CN113513355B (en) | 2021-04-16 | 2021-04-16 | Full-servo safety interlocking air door and control method |
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| CN202110412846.6A CN113513355B (en) | 2021-04-16 | 2021-04-16 | Full-servo safety interlocking air door and control method |
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| CN203308491U (en) * | 2013-04-16 | 2013-11-27 | 大同煤矿集团衡安装备有限公司 | Positive-negative linkage pneumatic air door |
| KR20170012956A (en) * | 2015-07-27 | 2017-02-06 | 박영호 | Power absorption device for sliding door, power absorption device, guide rail and sliding door system |
| CN211715159U (en) * | 2020-03-04 | 2020-10-20 | 安徽理工大学 | Novel intelligent control system for underground air door |
| CN214660307U (en) * | 2021-04-16 | 2021-11-09 | 大同煤矿集团衡安装备股份有限公司 | Full-servo safety interlocking air door for mine |
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2021
- 2021-04-16 CN CN202110412846.6A patent/CN113513355B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1155771A1 (en) * | 1983-04-26 | 1985-05-15 | Институт Горного Дела Ан Казсср | Ventilation door |
| CN201007218Y (en) * | 2007-02-01 | 2008-01-16 | 大同煤矿集团力泰密封有限责任公司 | Full servo safety interlock air door |
| CN201103405Y (en) * | 2007-07-25 | 2008-08-20 | 山西焦煤集团有限责任公司 | Latch type pneumatic wind gate interlocking device |
| CN203308491U (en) * | 2013-04-16 | 2013-11-27 | 大同煤矿集团衡安装备有限公司 | Positive-negative linkage pneumatic air door |
| KR20170012956A (en) * | 2015-07-27 | 2017-02-06 | 박영호 | Power absorption device for sliding door, power absorption device, guide rail and sliding door system |
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| CN113513355B (en) | 2023-09-19 |
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