CN204226746U - Mechanical linkage cut-off valve - Google Patents
Mechanical linkage cut-off valve Download PDFInfo
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- CN204226746U CN204226746U CN201420678900.7U CN201420678900U CN204226746U CN 204226746 U CN204226746 U CN 204226746U CN 201420678900 U CN201420678900 U CN 201420678900U CN 204226746 U CN204226746 U CN 204226746U
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Abstract
The utility model provides a kind of mechanical linkage cut-off valve.This mechanical linkage valve comprises: be all mechanical type two position three-way valve and the first valve be arranged side by side and the second valve; Lever linkage structure, comprising: fulcrum block; And lever, its first end connects with the connecting rod of the first valve, and its second end is connected with the connecting rod of the second valve, and its fulcrum support between first end and the second end is on fulcrum block; And drive unit, driving lever switches between left side state and right side heeling condition.Wherein, the valve plate direction of action of the first valve and the second valve is contrary.The utility model mechanical linkage valve is applied in regenerative oxidation device, can ensure that ventilating gas and drawing-off gas tunnel synchronization cut off, and avoids manual operation, remote control careless omission, improves the reliability of drawing-off gas cut-out and the Security of system.
Description
Technical field
The utility model relates to machinery industry valve technology field, particularly relates to a kind of mechanical linkage cut-off valve.
Background technique
For a long time, coal mine to ventilate mash gas methane concentration low (< 0.75%), enrichment are difficult, large-minded, utilize technical difficulty comparatively large, therefore generally all directly discharge air, be seldom recovered utilization.Heat accumulating type ventilating gas oxidation technology is considered to process coal mine to ventilate mash gas, reduce greenhouse gas emission important, gas emission reduction most with prospects utilizes technology, it is by alternately switching coal mine to ventilate mash gas and flue gas flows through heat retainer in regenerative oxidation device, and ventilating gas preheating is made methane oxidation release heat wherein; The waste heat discharged by methane oxidation by waste heat recycling system is taken out and is used.
Consider that regenerative oxidation device is long-term, stable, effectively run: Part Coal Mine ventilating gas methane concentration too low (< 0.3%) and fluctuation is large on the one hand, be unfavorable for maintaining that oxidation coating runs is stable; On the other hand user (mining area) exists hot and cold, electric etc. with can demand, only relies on the energy shortage of methane release in low density ventilating gas to maintain oxidation bed inside temperature and user with can demand simultaneously.At present, the mode addressed these problems is the drawing-off gas of a certain amount of higher concentration of blending (20 ~ 30%) in low methane concentrations ventilating gas, maintain methane gas methane concentration need and stablize, realize oxidation coating stable operation and user to hot and cold, electric demand, widen the concentration range of oxidation coating process gas.
In low methane concentrations ventilating gas, inevitably there are the following problems for the drawing-off gas of a certain amount of higher concentration of blending (20 ~ 30%): how to realize safe blending, ensure when the system failure, when low methane concentrations ventilating gas cuts off, higher concentration drawing-off gas cuts off simultaneously, thus guarantee that methane does not gather, its concentration is made to be in safety range (the aerial explosion limit of methane is about 5% ~ 15%, and it is 1.2% that mixing device arranges the upper limit of concentration after its blending usually).
In order to solve the problem, current common way installs methane concentration detector, methane concentration after detection acquisition blending, and concentration signal feeds back in control system, is judged and provide the instruction regulating or cut off drawing-off gas by control system.
But, above-mentioned controlling method is confined to the reliability of control signal, electric valve, and this remote controlled manner adds and artificial to judge and complicated interlocked control strategy and operating procedure, operate miss easily causes drawing-off gas to gather, methane concentration rises, and reduces ventilated gas oxidation device reliability of operation and Security.
Model utility content
(1) technical problem that will solve
In view of above-mentioned technical problem, the utility model provides a kind of mechanical linkage valve with greater security.
(2) technological scheme
According to an aspect of the present utility model, provide a kind of mechanical linkage cut-off valve.This mechanical linkage valve comprises: the first valve 10, is mechanical type two position three-way valve; Second valve 20, be mechanical type two position three-way valve, be arranged side by side with the first valve 10, both connecting rods are towards same direction; Lever linkage structure 30, comprising: fulcrum block 31, the predeterminated position between the first valve 10 and the second valve 20; And lever 32, its first end connects with the connecting rod 15 of the first valve, and its second end is connected with the connecting rod 25 of the second valve, and its fulcrum support between first end and the second end is on fulcrum block 31; And drive unit, driving lever 32 switches between left side state and right side heeling condition.Wherein, the valve plate direction of action of the first valve 10 and the second valve 20 is contrary, and when drive unit 40 driving lever 32 is in left side state, the first valve 10 and the second valve 20 are in the first state simultaneously; When drive unit driving lever 32 is in right side heeling condition, first valve 10 and the second valve 20 are in the second state simultaneously, wherein, the first state is air-suction state and diffuses one of them of state, the second state be air-suction state and diffuse state wherein another.
Preferably, in the utility model mechanical linkage cut-off valve, the valve plate direction of action of the first valve 10 and the second valve 20 is on the contrary: in the first valve 10 and the second valve 20: for the valve of one of them, when its valve plate is in upper, this valve is in air-suction state, when valve plate is in bottom, this valve is in the state of diffusing; For wherein another valve, when its valve plate is in upper, this valve is in the state of diffusing, and when valve plate is in bottom, this valve is in air-suction state.
Preferably, in the utility model mechanical linkage cut-off valve, be all connected by universal joint between the valve plate 14 of the first valve and corresponding connecting rod 15, between the valve plate 24 of the second valve and corresponding connecting rod 25.
Preferably, in the utility model mechanical linkage cut-off valve, between the first end of lever and corresponding connecting rod 15, the second end and the corresponding connecting rod 25 of lever all adopt connecting utricle 32a, 32b to be connected.
Preferably, in the utility model mechanical linkage cut-off valve, the fulcrum of lever and sheath axle connect and are supported on fulcrum block 31.
Preferably, in the utility model mechanical linkage cut-off valve, lever 32 is divided into first paragraph and second segment by fulcrum; The length L of first paragraph
1with the length L of second segment
2meet:
Wherein, first paragraph is one section near the second valve, and second segment is near one section of the first valve; H
1be the stroke of the valve plate 14 of the first valve, H
2it is the stroke of the valve plate 24 of the second valve.
Preferably, in the utility model mechanical linkage cut-off valve, the periphery of the valve plate of the first valve and the second valve is enclosed with the jacket layer of flexible material; And the inside of valve, the position of the stroke stop point up and down of valve, arranges the sealing gasket of flexible material.Preferably, flexible material is rubber or plastics.
Preferably, in the utility model mechanical linkage cut-off valve, drive unit is fluid pressure drive device, pneumatic actuating device or electromagnetic actuator device.
Preferably, in the utility model mechanical linkage cut-off valve, drive unit is fluid pressure drive device 40, and this fluid pressure drive device 40 comprises: hydraulic station 41; Cylinder support 42, is fixed on the side of fulcrum block; Oil cylinder 43, is installed on cylinder support 42 bottom it, the front end of its piston rod be articulated in lever except fulcrum a bit on, it enters/return line is connected to hydraulic station 41.
Preferably, in the utility model mechanical linkage cut-off valve, the control end of hydraulic station 41 is connected to control system 50, and carries out corresponding actions according to the signal of this control system 50; Wherein, control system 50 judges at present whether dangerous situation according to the signal of sensor feedback, and then judges to open or close mechanical linkage cut-off valve.
Preferably, in the utility model mechanical linkage cut-off valve, when hydraulic station quits work, rely on the energy storage section of hydraulic station to drive cylinder action, thus close the first valve 10 and the second valve 20.
Preferably, the utility model mechanical linkage cut-off valve also comprises: supporting frame with steel structure; First valve 10, second valve 20 and fulcrum block 31 are all fixed on this supporting frame with steel structure, and the first valve 10 and one end of the second valve 20 installing connecting rods and the lower end of fulcrum block all in the same plane.
Preferably, in the utility model mechanical linkage cut-off valve, the first valve 10 is ventilating gas two position three-way valve, its suction port 11 is connected to ventilating gas main pipeline 64, its air outlet 12 under, diffusion mouth 13 is upper, at its upper end, valve plate 14 is connected to the first end of lever by connecting rod 15.
Second valve 20 is drawing-off gas two position three-way valve, and its suction port 21 is connected to drawing-off gas main pipeline 61, its air outlet 22 upper, diffusion mouth 23 under, at its upper end, valve plate 24 is connected to the second end of lever by connecting rod 25.
Preferably, in the utility model mechanical linkage cut-off valve, fulcrum block is positioned at the side of the second close valve 20.
(3) beneficial effect
As can be seen from technique scheme, the utility model mechanical linkage valve has following beneficial effect:
(1) mechanical linkage, ensures that ventilating gas and drawing-off gas tunnel synchronization cut off, and avoids manual operation, remote control careless omission, improves the reliability of drawing-off gas cut-out and the Security of system;
(2) two valve bodies are connected by lever, are arranged in the steel frame construction of customization after unified debugging, simplify engineering site debugging, are convenient to install.
Accompanying drawing explanation
Figure 1A is in the schematic diagram of air-suction state according to two valves in the utility model embodiment mechanical type interlock cut-off valve;
Figure 1B is in the schematic diagram of the state of diffusing according to two valves in the utility model embodiment mechanical type interlock cut-off valve;
The schematic diagram of valve plate and corresponding position in two valves that Fig. 2 is the interlock of mechanical type shown in Figure 1A and Figure 1B cut-off valve;
Fig. 3 is the control schematic diagram of fluid pressure drive device in the cut-off valve of mechanical linkage shown in Figure 1A and Figure 1B;
Fig. 4 is the process system schematic diagram that the present embodiment mechanical linkage cut-off valve and regenerative oxidation device form.
[primary component]
10-first valve;
11-suction port 12-air outlet
13-diffusion mouth; 14-valve plate;
14a-sealing gasket; 14b-flexible material jacket layer;
15-connecting rod;
Second valve 20;
21-suction port 22-air outlet
23-diffusion mouth; 24-valve plate;
24a-sealing gasket; 24b-flexible material jacket layer;
25-connecting rod;
30-lever linkage structure;
31-fulcrum block; 32-lever;
40-fluid pressure drive device;
41-hydraulic station; 42-cylinder support;
43-oil cylinder;
50-control system;
60-ventilation air gas regenerative oxidation process system;
61-drawing-off gas main pipeline; 62-water separator;
63-safety valve group; 64-ventilating gas main pipeline;
65-blending section; 66-water-dust removing device;
67-regenerative oxidation device; 68-induced draught fan;
69-chimney.
A, A ', B, B ', C, C ': state.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.It should be noted that, in accompanying drawing or specification describe, similar or identical part all uses identical figure number.The implementation not illustrating in accompanying drawing or describe is form known to a person of ordinary skill in the art in art.In addition, although herein can providing package containing the demonstration of the parameter of particular value, should be appreciated that, parameter without the need to definitely equaling corresponding value, but can be similar to corresponding value in acceptable error margin or design constraints.The direction term mentioned in embodiment, such as " on ", D score, "front", "rear", "left", "right" etc., be only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate and is not used for limiting protection domain of the present utility model.
The utility model is based on lever principle, and drive unit driving lever, adopts machinery type coordinated signals two mechanical type two position three-way valves simultaneously.
In an exemplary embodiment of the present utility model, provide a kind of mechanical linkage cut-off valve.Figure 1A is in the schematic diagram of air-suction state according to two valves in the utility model embodiment mechanical type interlock cut-off valve.Figure 1B is in the schematic diagram of the state of diffusing according to two valves in the utility model embodiment mechanical type interlock cut-off valve.Please refer to Figure 1A and Figure 1B, the present embodiment mechanical type interlock cut-off valve comprises: the first valve 10, second valve 20, lever linkage structure 30 and drive unit.Wherein, the first valve 10 is mechanical type two position three-way valve.Second valve 20 is mechanical type two position three-way valve, and itself and the first valve 10 are arranged side by side, and both connecting rods are towards same direction.Lever linkage structure 30 comprises: fulcrum block 31, the predeterminated position between the first valve 10 and the second valve 20; And lever 32, its first end is connected by the connecting rod of connecting utricle with the first valve, and its second end is connected by the connecting rod of connecting utricle with the second valve, and its fulcrum between described first end and the second end and sheath axle connect and be supported on fulcrum block 31.Drive unit driving lever 32 switches between left side state (B) and right side heeling condition (B ');
In the first valve 10 and the second valve 20, for the valve of one of them, when its valve plate is in upper (A or C '), this valve is in air-suction state, and when valve plate is in bottom, this valve is in the state of diffusing; For wherein another valve, when its valve plate is in upper, this valve is in the state of diffusing, and when valve plate is in bottom (A ' or C), this valve is in air-suction state.
In the present embodiment, drive unit 40 driving lever 32 is when left side state, first valve and the second valve are in the first state simultaneously, drive unit driving lever is when right side heeling condition, first valve and the second valve are in the second state simultaneously, wherein, the first state is air-suction state and diffuses one of them of state, the second state be air-suction state and diffuse state wherein another.
Below each constituent element of the present embodiment interlock cut-off valve is described in detail.
Please refer to Figure 1A and Figure 1B, the first valve 10, second valve 20, fulcrum block 31, fluid pressure drive device 40 are all fixed on same supporting frame with steel structure 9.This supporting frame with steel structure 9 ensure that the upper end of the first valve 10 and the second valve 20 is in the same plane, thus the valve plate switch of two valves puts in place.
In the present embodiment, the first valve 10 and the second valve 20 are arranged side by side in same level, but the utility model is not as limit.Those skilled in the art can according to on-the-spot and design conditions arrange the position of this first valve and the second valve, direction and connecting rod towards, be not described in detail in this.
In the present embodiment, the first valve 10 is ventilating gas two position three-way valve, and its suction port 11 is connected to ventilating gas main pipeline 40, its air outlet 12 under, diffusion mouth 13 upper, namely when valve plate 14 is in upper (A), suction port 11 is connected with air outlet 12, and valve is in air-suction state; When valve plate 14 is in bottom (A '), suction port 11 is connected with diffusion mouth 13, and valve is in the state of diffusing.In the upper end of the first valve 10, valve plate 14 is connected to lever first end by connecting rod 15.
Correspondingly, the second valve 20 is drawing-off gas two position three-way valve, and its suction port 21 is connected to drawing-off gas main pipeline 50, its air outlet 22 upper, diffusion mouth 23 under, namely when valve plate 24 is in upper (C '), suction port 11 is connected with diffusion mouth 13, and valve is in the state of diffusing; When valve plate 14 is in bottom (C), suction port 11 is connected with air outlet 12, and valve is in air-suction state.In the upper end of the second valve 20, valve plate 24 is connected to the connecting utricle 32b of lever second end by connecting rod 25.
In order to ensure the smoothness of drive connection, the valve plate 14 of the first valve with between connecting rod 15, the valve plate 24 of the second valve is all connected by universal joint with between connecting rod 25.Meanwhile, during in order to ensure lever landing, connecting rod vertical motion, in the first valve, adopts connecting utricle 32a to be connected, in the second valve, adopts connecting utricle 32b to be connected between connecting rod 25 and the second end of lever between connecting rod 15 and the first end of lever.
Generally, valve plate (15,25) in first valve 10 and the second valve 20 is prepared by sheet metal, and the corresponding part of the valve internal of lower two stroke stop point positions is also prepared by metallic material thereon, if do not processed, when valve plate moves to stroke stop point, collide with corresponding site and produce spark, for methane gas, this is breakneck.
The schematic diagram of valve plate and corresponding position in two valves that Fig. 2 is the interlock of mechanical type shown in Figure 1A and Figure 1B cut-off valve.As shown in Figure 2, the periphery of the valve plate of two valves is enclosed with flexible material jacket layer (14b, 24b).Meanwhile, at valve internal, the position of upper and lower two stroke stop points of valve plate, arranges flexible material sealing gasket (14a, 24a).When valve plate moves to stroke stop point position, the flexible material jacket layer (14b, 24b) of its periphery contacts with flexible material sealing gasket (14a, 24a), has cushioned the momentum of valve plate motion, meanwhile, reaches the object of valve plate sealing.
It will be understood by those skilled in the art that above-mentioned flexible material can be rubber, plastic or other material.In addition, the periphery of valve plate without the jacket layer of flexible material, and directly with flexible material preparation, can reach identical object, not repeat them here equally.
Please refer to Figure 1A and Figure 1B, the fulcrum in the middle part of lever 32 is accepted by fulcrum block 31, ensures that it rotates freely.Lever 32 is divided into first paragraph (a section near the second valve) and second segment (a section near the first valve) by fulcrum.Wherein, the length L of first paragraph
1with the length L of second segment
2meet following relation:
Wherein, H
1be the stroke of the valve plate 14 of the first valve, H
2it is the stroke of the valve plate 24 of the second valve.
In the present embodiment, the switching power resources of lever between left side state and right side heeling condition are in fluid pressure drive device 40.Fig. 3 is the structural representation of fluid pressure drive device in the cut-off valve of mechanical linkage shown in Figure 1A and Figure 1B.Please refer to Figure 1A, Figure 1B and Fig. 3, fluid pressure drive device 40 comprises: hydraulic station 41, cylinder support 42 and oil cylinder 43.Wherein, cylinder support 42 is fixed on the top of supporting frame with steel structure, the side of fulcrum block.The bottom of oil cylinder 43 is installed on this cylinder support 42, the front end of its piston rod be articulated in lever second segment certain a bit on, it enters/return line is connected to hydraulic station 41.The control end of hydraulic station 41 is connected to control system 50.And control system 50 judges at present whether dangerous situation according to the signal being installed on package unit each sensor feedback inner, and then judge whether to need to close mechanical linkage cut-off valve.
In addition, even if power-off appears in system, when hydraulic station quits work, only need to rely on the energy storage section of hydraulic station that piston can be made to return to retracted mode, thus closedown ventilating gas two position three-way valve and drawing-off gas two position three-way valve can ensure security of system.
It should be noted that, the fluid pressure drive device that the present embodiment adopts carrys out driving device formula interlock cut-off valve, but the utility model is not as limit.In other embodiments of the present utility model, pneumatic or electromagnetic component can also be adopted to carry out driving device formula interlock cut-off valve, and these modes are well known to those skilled in the art, and no longer describe in detail herein.
Fig. 4 is the process system schematic diagram that the present embodiment mechanical linkage cut-off valve and regenerative oxidation device form.As shown in Figure 4, the suction port of the second valve 20 is connected in drawing-off gas main pipeline 61, and its air outlet is connected to ventilating gas main pipeline 64 by pipeline, and its diffusion mouth is vacant.The suction port of the first valve 10 is connected to the end of ventilating gas main pipeline 64, and its air outlet is connected to regenerative oxidation device 67 by pipeline, and its diffusion mouth is vacant.Second valve 20 and corresponding valve composition safety valve group 63.
Below introduce the working principle of the present embodiment mechanical linkage cut-off valve:
(1) when control system judges that situation without exception occurs, send safety signal to hydraulic station 41, hydraulic station 41 controls oil cylinder 13, make its piston rod be in the state of stretching out, now, the valve plate 14 of the first valve is in bottom, suction port is communicated with air outlet, and diffusion mouth is closed; Due to the effect of lever, the valve plate of the second valve is in upper, and suction port is communicated with air outlet, and diffusion mouth is closed, as shown in Figure 1A;
Now, first valve 10 and the second valve 20 are all in air-suction state, the blending section 65 that drawing-off gas enters ventilating gas main pipeline 64 after Flow-rate adjustment in water separator 62, safety valve group 63 carries out blending, mixed gas enters the suction port of the first valve 10 through water-dust removing device 66 process, and enter regenerative oxidation device by air outlet, regenerative oxidation device 67 normally runs, and the gas after oxidation is discharged by chimney 69 through induced draught fan 68.
(2) when the shutdown of regenerative oxidation device or system jam, control system sends danger signal to hydraulic station 41, and hydraulic station 41 controls oil cylinder 13, make its piston rod be in retracted mode, now, the valve plate 14 of the first valve is in upper, suction port is communicated with diffusion mouth, and air outlet is closed; Due to the effect of lever, the valve plate of the second valve is in bottom, and suction port is communicated with diffusion mouth, and air outlet is closed, as shown in Figure 1B.
Now, the first valve 10 and the second valve 20 are all in the state of diffusing, and now, in the first valve 10, suction port is communicated with diffusion mouth, and air outlet is closed, and ventilating gas starts to diffuse.Simultaneously, second valve is in bottom, and its air outlet is closed, and unlatching is diffused, the blending section 65 that drawing-off gas can not enter ventilating gas main pipeline 64 again carries out blending, thus avoids drawing-off gas and do not turn off and gather in ventilating gas pipeline and cause methane concentration to raise.
Visible, two different gas tube two position three-way valves are integrated into interlock cut-off valve by the present embodiment a lever linkage structure and steelframe support platform.This mechanical linkage mode can ensure that ventilating gas and drawing-off gas open the needs of blending simultaneously on the one hand, can ensure when system malfunctions on the other hand, guarantee while cutting off ventilating gas to cut off drawing-off gas, thus avoid manual operation, remote control careless omission, improve the reliability of drawing-off gas cut-out and the Security of system.Meanwhile, simplify Pipe installing, improve operating process reliability.
So far, by reference to the accompanying drawings the present embodiment has been described in detail.Describe according to above, those skilled in the art should have the utility model mechanical linkage cut-off valve and have clearly been familiar with.
In addition, the above-mentioned definition to each element and method is not limited in various concrete structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can change simply it or replace, such as: except hydraulic type drive unit, pneumatic type drive unit or electromagnetic driver can also be adopted to carry out driving device formula interlock cut-off valve.
In sum, the utility model is based on lever principle, drive unit lever switches between a first state and a second state, open or close the first valve and the second valve simultaneously, its advantage is that structure, operating procedure are simple, and meanwhile, mechanical linkage structural reliability is high, tele-control system participation is low, be a kind of avoid and make up people for misoperation, control system action careless omission effective ways.
Above-described specific embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (15)
1. a mechanical linkage cut-off valve, is characterized in that, comprising:
First valve (10) is mechanical type two position three-way valve;
Second valve (20) is mechanical type two position three-way valve, and be arranged side by side with described first valve (10), both connecting rods are towards same direction;
Lever linkage structure (30), comprising:
Fulcrum block (31), is positioned at the predeterminated position between described first valve (10) and the second valve (20); And
Lever (32), its first end connects with the connecting rod (15) of described first valve, its second end is connected with the connecting rod (25) of the second valve, and its fulcrum support between described first end and the second end is on described fulcrum block (31); And
Drive unit, drives described lever (32) to switch between left side state and right side heeling condition;
Wherein, the valve plate direction of action of described first valve (10) and the second valve (20) is contrary, when described drive unit (40) drives described lever (32) in left side state, described first valve (10) and the second valve (20) are in the first state simultaneously; When described drive unit drives described lever (32) in right side heeling condition, described first valve (10) and the second valve (20) are in the second state simultaneously, wherein, described first state is air-suction state and diffuses one of them of state, described second state be air-suction state and diffuse state wherein another.
2. mechanical linkage cut-off valve according to claim 1, it is characterized in that, the valve plate direction of action of described first valve (10) and the second valve (20) is on the contrary: in described first valve (10) and the second valve (20):
For the valve of one of them, when its valve plate is in upper, this valve is in air-suction state, and when valve plate is in bottom, this valve is in the state of diffusing;
For wherein another valve, when its valve plate is in upper, this valve is in the state of diffusing, and when valve plate is in bottom, this valve is in air-suction state.
3. mechanical linkage cut-off valve according to claim 1, it is characterized in that, the valve plate (14) of the first valve with between corresponding connecting rod (15), the valve plate (24) of the second valve is all connected by universal joint with between corresponding connecting rod (25).
4. mechanical linkage cut-off valve according to claim 1, it is characterized in that, the first end of lever with between corresponding connecting rod (15), the second end and the corresponding connecting rod (25) of lever all adopt connecting utricle (32a, 32b) to be connected.
5. mechanical linkage cut-off valve according to claim 1, is characterized in that, the fulcrum of lever and sheath axle connect and be supported on fulcrum block (31).
6. mechanical linkage cut-off valve according to claim 1, is characterized in that, described lever (32) is divided into first paragraph and second segment by fulcrum; The length L of first paragraph
1with the length L of second segment
2meet:
Wherein, first paragraph is one section near the second valve, and second segment is near one section of the first valve; H
1be the stroke of the valve plate (14) of the first valve, H
2it is the stroke of the valve plate (24) of the second valve.
7. mechanical linkage cut-off valve according to claim 1, is characterized in that, the periphery of the valve plate of the first valve and the second valve is enclosed with the jacket layer of flexible material; And the inside of valve, the position of the stroke stop point up and down of described valve, arranges the sealing gasket of flexible material.
8. mechanical linkage cut-off valve according to claim 7, is characterized in that, described flexible material is rubber or plastics.
9. mechanical linkage cut-off valve according to claim 1, is characterized in that, described drive unit is fluid pressure drive device, pneumatic actuating device or electromagnetic actuator device.
10. mechanical linkage cut-off valve according to claim 9, is characterized in that, described drive unit is fluid pressure drive device (40), and this fluid pressure drive device (40) comprising:
Hydraulic station (41);
Cylinder support (42), is fixed on the side of fulcrum block;
Oil cylinder (43), is installed on described cylinder support (42) bottom it, the front end of its piston rod be articulated in lever except fulcrum a bit on, it enters/return line is connected to described hydraulic station (41).
11. mechanical linkage cut-off valves according to claim 10, is characterized in that, the control end of described hydraulic station (41) is connected to control system (50), and carries out corresponding actions according to the signal of this control system (50);
Wherein, described control system (50) judges at present whether dangerous situation according to the signal of sensor feedback, and then judges to open or close described mechanical linkage cut-off valve.
12. mechanical linkage cut-off valves according to claim 10, is characterized in that, when hydraulic station quits work, rely on the energy storage section of hydraulic station to drive cylinder action, thus close described first valve (10) and the second valve (20).
13. mechanical linkage cut-off valves according to claim 1, is characterized in that, also comprise: supporting frame with steel structure;
Described first valve (10), the second valve (20) and fulcrum block (31) are all fixed on this supporting frame with steel structure, and one end of described first valve (10) and the second valve (20) installing connecting rods and the lower end of fulcrum block all in the same plane.
14. mechanical linkage cut-off valves according to any one of claim 1 to 13, is characterized in that:
Described first valve (10) is ventilating gas two position three-way valve, its suction port (11) is connected to ventilating gas main pipeline (64), its air outlet (12) under, diffusion mouth (13) is upper, at its upper end, valve plate (14) is connected to the first end of described lever by connecting rod (15);
Described second valve (20) is drawing-off gas two position three-way valve, its suction port (21) is connected to drawing-off gas main pipeline (61), its air outlet (22) is upper, diffusion mouth (23) under, at its upper end, valve plate (24) is connected to the second end of described lever by connecting rod (25).
15. mechanical linkage cut-off valves according to claim 14, is characterized in that, described fulcrum block is positioned at the side of close the second valve (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678900.7U CN204226746U (en) | 2014-11-06 | 2014-11-06 | Mechanical linkage cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678900.7U CN204226746U (en) | 2014-11-06 | 2014-11-06 | Mechanical linkage cut-off valve |
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| CN204226746U true CN204226746U (en) | 2015-03-25 |
Family
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| CN201420678900.7U Active CN204226746U (en) | 2014-11-06 | 2014-11-06 | Mechanical linkage cut-off valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405930A (en) * | 2014-11-06 | 2015-03-11 | 中国科学院工程热物理研究所 | Mechanical linkage cut-off valve |
| CN108843849A (en) * | 2018-09-18 | 2018-11-20 | 中冶南方工程技术有限公司 | Gas-fired valve with diffusion function |
| CN116446491A (en) * | 2023-06-07 | 2023-07-18 | 江苏沪武建设集团有限公司 | Rainwater collecting and purifying system and construction method |
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2014
- 2014-11-06 CN CN201420678900.7U patent/CN204226746U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405930A (en) * | 2014-11-06 | 2015-03-11 | 中国科学院工程热物理研究所 | Mechanical linkage cut-off valve |
| CN104405930B (en) * | 2014-11-06 | 2017-01-25 | 中国科学院工程热物理研究所 | Mechanical linkage cut-off valve |
| CN108843849A (en) * | 2018-09-18 | 2018-11-20 | 中冶南方工程技术有限公司 | Gas-fired valve with diffusion function |
| CN116446491A (en) * | 2023-06-07 | 2023-07-18 | 江苏沪武建设集团有限公司 | Rainwater collecting and purifying system and construction method |
| CN116446491B (en) * | 2023-06-07 | 2024-02-02 | 江苏沪武建设集团有限公司 | Rainwater collecting and purifying system and construction method |
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