A timing closing and stopping control device for a compulsory safety type gas main switch

Abstract

A kind of forced safety type gas main switch timing closing control device, including box, gas main switch opening and closing control assembly, gas main switch closing trigger assembly and gas main switch opening time length timing assembly;Box is fixed on wall body, gas pipeline and gas main switch are located between box and wall body, gas main switch opening and closing control assembly, gas main switch closing trigger assembly and gas main switch opening time length timing assembly are all installed on box;Gas main switch opening and closing control assembly is used in conjunction with gas main switch;Gas main switch closing trigger assembly is located between gas main switch opening and closing control assembly and gas main switch opening time length timing assembly.This device can set the opening time length of gas main switch, can independently close gas main switch in first time after timing end, and the priority of device timing function is higher than the opening priority of gas main switch, otherwise, gas main switch cannot complete opening before timing begins, to realize forced safety.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal gas safety equipment, in particular to a forced safety type coal gas main switch timing closing control device. BACKGROUND

[0002] People in the process of using coal gas in daily life will encounter two switches, one is the coal gas main switch on the coal gas pipeline, and the other is the coal gas switch on the gas stove. People often only close the gas switch on the stove after using the gas stove, and forget or completely ignore to close the coal gas main switch on the coal gas pipeline. This wrong use habit is also the main cause of coal gas leakage accidents.

[0003] From the past coal gas leakage accidents, it can be found that the coal gas leakage points are basically the gas stove and the hose connecting the gas stove and the coal gas pipeline, and the reasons for the coal gas leakage are both pipeline aging and human negligence. However, there is a common feature in these coal gas leakage accidents, that is, the coal gas main switch is in the open state. Therefore, it is very important to develop the habit of closing the coal gas main switch in time to reduce the incidence of coal gas leakage accidents.

[0004] However, good coal gas use habits cannot be developed in a day, and it is obviously unreliable to rely on people's good habits and self-consciousness. Therefore, it is necessary to design a device that can automatically close the coal gas main switch without human intervention within a set time. SUMMARY

[0005] In view of the existing problems at present, the present application provides a forced safety type coal gas main switch timing closing control device, which can set the opening time of the coal gas main switch, and can independently complete the closing of the coal gas main switch in the first time after the timing is completed. In particular, the priority of the timing function of the device is higher than the opening priority of the coal gas main switch, that is, only after the opening time setting of the coal gas main switch is completed, the opening of the coal gas main switch can be completed, otherwise the coal gas main switch cannot be opened before the timing starts, thereby realizing forced safety.

[0006] In order to achieve the above object, the present application adopts the following technical scheme: a forced safety type gas main switch timing closing control device, comprising a box, a gas main switch opening and closing control assembly, a gas main switch closing trigger assembly and a gas main switch opening time length timing assembly; the box adopts a rectangular structure, a supporting leg is fixedly arranged on the outer surface of the rear side wall plate of the box, the supporting leg is fixedly connected with the wall through bolts, the gas pipeline is located between the rear side wall plate of the box and the wall, and the gas main switch is located on the gas pipeline between the rear side wall plate of the box and the wall; the gas main switch opening and closing control assembly, the gas main switch closing trigger assembly and the gas main switch opening time length timing assembly are all installed on the box; the gas main switch opening and closing control assembly is used in cooperation with the gas main switch; the gas main switch closing trigger assembly is located between the gas main switch opening and closing control assembly and the gas main switch opening time length timing assembly.

[0007] The gas main switch opening and closing control assembly comprises a gas main switch opening and closing control knob, a first rotating shaft, a first coil spring and a gas main switch adapter claw; the two ends of the first rotating shaft are rotatably connected to the front side wall plate and the rear side wall plate of the box through shaft sleeves, the front end of the first rotating shaft extends out of the front side wall plate of the box, and the gas main switch opening and closing control knob is fixedly installed on the front end of the first rotating shaft; the rear end of the first rotating shaft extends out of the rear side wall plate of the box, the gas main switch adapter claw is fixedly installed on the rear end of the first rotating shaft, and the gas main switch adapter claw is fixedly connected with the gas main switch; the first coil spring is sleeved on the first rotating shaft, the inner end of the first coil spring is fixedly connected with the first rotating shaft, and the outer end of the first coil spring is fixedly connected with the box; a gas switch sign plate is arranged between the gas main switch opening and closing control knob and the front side wall plate of the box, the gas switch sign plate is fixedly installed on the front side wall plate of the box, and the front surface of the gas switch sign plate is provided with a sign for indicating gas opening and a sign for indicating gas closing.

[0008] The coal gas main switch opening time length timing assembly comprises a coal gas main switch opening time length timing knob, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a fifth rotating shaft, a sixth rotating shaft, a second coil spring, a first large gear, a first small gear, a second large gear, a second small gear, a third large gear, a third small gear, a pallet wheel, a balance wheel, a swing lever and a hairspring; the two ends of the second rotating shaft, the third rotating shaft, the fourth rotating shaft, the fifth rotating shaft and the sixth rotating shaft are rotatably connected to the front side wall plate and the rear side wall plate of the box body through shaft sleeves respectively, and the first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft, the fifth rotating shaft and the sixth rotating shaft are arranged in parallel with each other; the front end of the second rotating shaft extends out of the front side wall plate of the box body, and the coal gas main switch opening time length timing knob is fixedly installed at the front end of the second rotating shaft; the second coil spring is sleeved on the second rotating shaft, the inner end of the second coil spring is fixedly connected with the second rotating shaft, and the outer end of the second coil spring is fixedly connected with the box body; a coal gas opening timing mark plate is arranged between the coal gas main switch opening time length timing knob and the front side wall plate of the box body, the coal gas opening timing mark plate is fixedly installed on the front side wall plate of the box body, and a mark scale for indicating the coal gas opening time is arranged on the front surface of the coal gas opening timing mark plate; the first large gear is fixedly sleeved on the second rotating shaft; the first small gear and the second large gear are coaxially fixedly sleeved on the third rotating shaft, and the first small gear is engaged with the first large gear; the second small gear and the third large gear are coaxially fixedly sleeved on the fourth rotating shaft, and the second small gear is engaged with the second large gear; the third small gear and the pallet wheel are coaxially fixedly sleeved on the fifth rotating shaft, and the third small gear is engaged with the third large gear; the balance wheel is fixedly sleeved on the sixth rotating shaft, the swing lever is fixedly connected with the balance wheel, the swing lever is parallel to the sixth rotating shaft, and the pallet wheel is engaged with the swing lever; the hairspring is sleeved on the sixth rotating shaft, the inner end of the hairspring is fixedly connected with the sixth rotating shaft, and the outer end of the hairspring is fixedly connected with the box body.

[0009] The coal gas main switch closing trigger assembly comprises a ratchet wheel, a pawl, a pawl support frame and a cam; the ratchet wheel is fixedly sleeved on the first rotating shaft; the pawl support frame is vertically fixedly installed on the bottom plate of the box body, the pawl is installed on the top of the pawl support frame, the tip end of the pawl is engaged with the ratchet teeth of the ratchet wheel; the cam is fixedly sleeved on the second rotating shaft, and the cam is in top pushing fit with the root end of the pawl.

[0010] The beneficial effects of the present application are as follows:

[0011] The present application has the following beneficial effects: The present application has the following beneficial effects: Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a forced safety gas main switch timed shutdown control device according to the present invention;

[0013] Figure 2 for Figure 1 Cross-sectional view of AA (the tip of the pawl is engaged with the ratchet teeth);

[0014] Figure 3 for Figure 1 Middle AA sectional view (the tip of the pawl is separated from the ratchet teeth);

[0015] In the diagram, 1—box body, 2—leg, 3—wall, 4—bolt, 5—gas pipe, 6—main gas switch, 7—main gas switch on / off control knob, 8—first rotating shaft, 9—first coil spring, 10—main gas switch adapter pawl, 11—gas switch indicator plate, 12—main gas switch on / off timer knob, 13—second rotating shaft, 14—third rotating shaft, 15—fourth rotating shaft, 16—fifth rotating shaft, 17—sixth rotating shaft, 18—second coil spring, 19—first large gear, 20—first small gear, 21—second large gear, 22—second small gear, 23—third large gear, 24—third small gear, 25—escape wheel, 26—balance wheel, 27—balance rod, 28—hairspring, 29—gas on / off timer indicator plate, 30—ratchet, 31—pawl, 32—pawl support frame, 33—cam. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] like Figures 1 to 3 As shown, a forced safety gas main switch timed shutdown control device includes a housing 1, a gas main switch opening and closing control component, a gas main switch closing and stopping trigger component, and a gas main switch opening duration timing component. The housing 1 has a rectangular structure, and a support leg 2 is fixedly installed on the outer surface of the rear side wall of the housing 1. The support leg 2 is fixedly connected to the wall 3 by bolts 4. The gas pipeline 5 is located between the rear side wall of the housing 1 and the wall 3, and the gas main switch 6 is located on the gas pipeline 5 between the rear side wall of the housing 1 and the wall 3. The gas main switch opening and closing control component, the gas main switch closing and stopping trigger component, and the gas main switch opening duration timing component are all installed on the housing 1. The gas main switch opening and closing control component is used in conjunction with the gas main switch 6. The gas main switch closing and stopping trigger component is located between the gas main switch opening and closing control component and the gas main switch opening duration timing component.

[0018] The total gas switch opening and closing control assembly comprises a total gas switch opening and closing control knob 7, a first rotating shaft 8, a first coil spring 9 and a total gas switch switching claw 10. The two ends of the first rotating shaft 8 are rotatably connected to the front and rear side wall plates of the box body 1 through shaft sleeves respectively, the front end of the first rotating shaft 8 extends out of the front side wall plate of the box body 1, and the total gas switch opening and closing control knob 7 is fixedly installed on the front end of the first rotating shaft 8. The rear end of the first rotating shaft 8 extends out of the rear side wall plate of the box body 1, and the total gas switch switching claw 10 is fixedly installed on the rear end of the first rotating shaft 8 and is fixedly connected with the total gas switch 6. The first coil spring 9 is sleeved on the first rotating shaft 8, the inner end of the first coil spring 9 is fixedly connected with the first rotating shaft 8, and the outer end of the first coil spring 9 is fixedly connected with the box body 1. A gas switch sign plate 11 is arranged between the total gas switch opening and closing control knob 7 and the front side wall plate of the box body 1, and the gas switch sign plate 11 is fixedly installed on the front side wall plate of the box body 1. The front surface of the gas switch sign plate 11 is provided with a sign for indicating gas opening and a sign for indicating gas closing.

[0019] The coal gas total switch opening time length timing assembly comprises a coal gas total switch opening time length timing knob 12, a second rotating shaft 13, a third rotating shaft 14, a fourth rotating shaft 15, a fifth rotating shaft 16, a sixth rotating shaft 17, a second coil spring 18, a first large gear 19, a first small gear 20, a second large gear 21, a second small gear 22, a third large gear 23, a third small gear 24, a escapement wheel 25, a balance wheel 26, a swing lever 27 and a hairspring 28; both ends of the second rotating shaft 13, the third rotating shaft 14, the fourth rotating shaft 15, the fifth rotating shaft 16 and the sixth rotating shaft 17 are rotatably connected to the front side wall plate and the rear side wall plate of the box body 1 through shaft sleeves respectively, and the first rotating shaft 8, the second rotating shaft 13, the third rotating shaft 14, the fourth rotating shaft 15, the fifth rotating shaft 16 and the sixth rotating shaft 17 are arranged in parallel with each other; the front end of the second rotating shaft 13 extends out of the front side wall plate of the box body 1, and the coal gas total switch opening time length timing knob 12 is fixedly installed at the front end of the second rotating shaft 13; the second coil spring 18 is sleeved on the second rotating shaft 13, the inner end of the second coil spring 18 is fixedly connected with the second rotating shaft 13, and the outer end of the second coil spring 18 is fixedly connected with the box body 1; a coal gas opening timing mark plate 29 is arranged between the coal gas total switch opening time length timing knob 12 and the front side wall plate of the box body 1, and the coal gas opening timing mark plate 29 is fixedly installed on the front side wall plate of the box body 1; the front surface of the coal gas opening timing mark plate 29 is provided with an identification scale for indicating the coal gas opening time; the first large gear 19 is fixedly sleeved on the second rotating shaft 13; the first small gear 20 and the second large gear 21 are coaxially fixedly sleeved on the third rotating shaft 14, and the first small gear 20 is engaged with the first large gear 19; the second small gear 22 and the third large gear 23 are coaxially fixedly sleeved on the fourth rotating shaft 15, and the second small gear 22 is engaged with the second large gear 21; the third small gear 24 and the escapement wheel 25 are coaxially fixedly sleeved on the fifth rotating shaft 16, and the third small gear 24 is engaged with the third large gear 23; the balance wheel 26 is fixedly sleeved on the sixth rotating shaft 17, the swing lever 27 is fixedly connected with the balance wheel 26, the swing lever 27 is parallel to the sixth rotating shaft 17, and the escapement wheel 25 is engaged with the swing lever 27; the hairspring 28 is sleeved on the sixth rotating shaft 17, the inner end of the hairspring 28 is fixedly connected with the sixth rotating shaft 17, and the outer end of the hairspring 28 is fixedly connected with the box body 1.

[0020] The coal gas total switch closing trigger assembly comprises a ratchet wheel 30, a pawl 31, a pawl support frame 32 and a cam 33; the ratchet wheel 30 is fixedly sleeved on the first rotating shaft 8; the pawl support frame 32 is vertically fixedly installed on the bottom plate of the box body 1, the pawl 31 is installed on the top of the pawl support frame 32, the tip end of the pawl 31 is engaged with the ratchet teeth of the ratchet wheel 30; the cam 33 is fixedly sleeved on the second rotating shaft 13, and the cam 33 is in top pushing fit with the root end of the pawl 31.

[0021] The following describes a one-time use process of the application in combination with the drawings:

[0022] In the initial state, the gas switch on-off control knob 7 is indicated at the "gas off" mark on the front surface of the gas switch mark plate 11, the gas switch on-time counting knob 12 is indicated at the 0 scale line on the front surface of the gas switch on-time counting mark plate 29, the high point end of the cam 33 is in the state of being separated from the root end of the push pawl 31, and the tip of the pawl 31 is separated from the teeth of the ratchet wheel 30. In this state, when the gas switch on-off control knob 7 is rotated and indicated at the "gas on" mark on the front surface of the gas switch mark plate 11, the output torque will be transmitted to the gas switch 6 through the first rotating shaft 8 and the gas switch adapter dog 10 in turn, so as to control the gas switch 6 to change from the off state to the on state, and the first coil spring 9 can store the elastic potential energy. However, when the gas switch on-off control knob 7 is released, since the tip of the pawl 31 is separated from the teeth of the ratchet wheel 30 (as shown in FIG. 2), the ratchet wheel 30 is not constrained, the elastic potential energy stored in the first coil spring 9 will be quickly released, and the first rotating shaft 8 will be reversely driven to rotate, finally driving the gas switch adapter dog 10 to reversely rotate, until the gas switch 6 is quickly changed from the on state to the off state, and the gas switch on-off control knob 7 is also rotated back to the initial position with the first rotating shaft 8. That is, as long as the timer is not on, the gas switch 6 cannot be turned on, thereby achieving forced safety. Figure 3

[0023] When the gas is needed to be used, the gas switch on-time counting knob 12 is first rotated and indicated at any time scale line on the front surface of the gas switch on-time counting mark plate 29 (if the 90 min scale line is taken as an example, it means that the total time of the timer is one and a half hours). When the gas switch on-time counting knob 12 is rotated to the position, it is indicated that the second rotating shaft 13 has been rotated by the same angle with the gas switch on-time counting knob 12, thereby driving the cam 33 and the first large gear 19 to synchronously rotate by the same angle. With the rotation of the cam 33, the high point end of the cam 33 will be separated from the root end of the pawl 31, so as to reset the pawl 31, and the tip of the pawl 31 restores the meshing state with the teeth of the ratchet wheel 30 (as shown in FIG. 3). Figure 2

[0024] ​​When the long-time counting knob 12 is screwed to the position after the gas switch is opened, the second coil spring 18 stores the elastic potential energy. When the long-time counting knob 12 is unscrewed, the second coil spring 18 releases the elastic potential energy, first reversely drives the second rotating shaft 13 to rotate, and then reversely drives the escapement 25 to rotate after three-stage gear deceleration. The escapement 25 drives the swing lever 27 and the balance wheel 26 to swing a fixed angle after each tooth of the escapement 25 rotates. Meanwhile, the hairspring 28 repeatedly swings between storing and releasing the elastic potential energy. The elastic potential energy of the hairspring 28 reversely drives the sixth rotating shaft 17, the balance wheel 26 and the swing lever 27 to reset, realizes the swing of the balance wheel 26, and then realizes the uniform reverse rotation of the escapement 25, and finally realizes the accurate timing. The process ends when the elastic potential energy of the second coil spring 18 is released.

[0025] When the long-time counting knob 12 is screwed to the position after the gas switch is opened, the tip of the pawl 31 is restored to the meshing state with the teeth of the ratchet wheel 30. At this time, the gas switch opening and closing control knob 7 can be rotated and the output torque is transmitted to the gas switch 6 through the first rotating shaft 8 and the gas switch adapter dog 10, so that the gas switch 6 can be controlled to change from the closed state to the open state. Meanwhile, the first coil spring 9 stores the elastic potential energy. When the gas switch opening and closing control knob 7 is unscrewed, the ratchet wheel 30 is locked by the pawl 31 and cannot rotate, so the first rotating shaft 8 cannot rotate. At this time, the elastic potential energy stored in the first coil spring 9 is completely locked and cannot be released.

[0026] When the elastic potential energy of the second coil spring 18 is released, the timing ends. At this time, the cam 33 is also reversely rotated to the initial position with the second rotating shaft 13, so that the high point end of the cam 33 restores the pushing state of the root end of the pawl 31, thereby forcing the tip of the pawl 31 to separate from the teeth of the ratchet wheel 30. At the moment when the tip of the pawl 31 separates from the teeth of the ratchet wheel 30, the constraint of the ratchet wheel 30 disappears, the elastic potential energy stored in the first coil spring 9 is quickly released, reversely drives the first rotating shaft 8 to rotate, and finally reversely rotates the gas switch adapter dog 10, until the gas switch 6 is quickly changed from the open state to the closed state, and the gas switch opening and closing control knob 7 is also rotated to the initial position with the first rotating shaft 8.

[0027] If the use time of the gas needs to be further prolonged during the timing process, the long-time counting knob 12 of the gas switch can be continuously screwed during use, which can effectively prolong the timing time and is convenient and fast.

[0028] The schemes in the embodiments are not intended to limit the patent protection scope of the present application, and any equivalent implementation or change made without departing from the present application is included in the patent scope of the present application.

Claims

1. A forced safety type timed shutdown control device for a main gas switch, characterized in that: The utility model provides a kind of gas total switch control device, including box, gas total switch opening-closing control assembly, gas total switch closing trigger assembly and gas total switch opening time length timing assembly;The box adopts rectangular structure, is fixedly provided with support leg on the rear side wall plate outer surface of box, and support leg is fixedly connected between wall by bolt, gas pipeline is located between the rear side wall plate of box and wall, and gas total switch is located on the gas pipeline between the rear side wall plate of box and wall;Gas total switch opening-closing control assembly, gas total switch closing trigger assembly and gas total switch opening time length timing assembly are all installed on box;Gas total switch opening-closing control assembly is used in conjunction with gas total switch;Gas total switch closing trigger assembly is located between gas total switch opening-closing control assembly and gas total switch opening time length timing assembly; The gas total switch opening-closing control assembly includes gas total switch opening-closing control knob, first rotating shaft, first coil spring and gas total switch adapter dog;Two ends of the first rotating shaft are rotatably connected to the front side wall plate and the rear side wall plate of the box through shaft sleeves, the front end of the first rotating shaft extends out of the front side wall plate of the box, and the gas total switch opening-closing control knob is fixedly installed on the front end of the first rotating shaft;The rear end of the first rotating shaft extends out of the rear side wall plate of the box, and the gas total switch adapter dog is fixedly installed on the rear end of the first rotating shaft, and the gas total switch adapter dog is fixedly connected with the gas total switch;The first coil spring is sleeved on the first rotating shaft, the inner end of the first coil spring is fixedly connected with the first rotating shaft, and the outer end of the first coil spring is fixedly connected with the box;A gas switch sign plate is arranged between the gas total switch opening-closing control knob and the front side wall plate of the box, the gas switch sign plate is fixedly installed on the front side wall plate of the box, and the front surface of the gas switch sign plate is provided with a sign for indicating gas opening and a sign for indicating gas closing; The coal gas main switch opening time length timing assembly comprises a coal gas main switch opening time length timing knob, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a fifth rotating shaft, a sixth rotating shaft, a second coil spring, a first large gear, a first small gear, a second large gear, a second small gear, a third large gear, a third small gear, a pallet wheel, a balance wheel, a swing lever and a hairspring; the two ends of the second rotating shaft, the third rotating shaft, the fourth rotating shaft, the fifth rotating shaft and the sixth rotating shaft are rotatably connected to the front side wall plate and the rear side wall plate of the box through shaft sleeves, and the first rotating shaft, the second rotating shaft, the third rotating shaft, the fourth rotating shaft, the fifth rotating shaft and the sixth rotating shaft are parallel to each other; the front end of the second rotating shaft extends out of the front side wall plate of the box, and the coal gas main switch opening time length timing knob is fixedly installed at the front end of the second rotating shaft; the second coil spring is sleeved on the second rotating shaft, the inner end of the second coil spring is fixedly connected to the second rotating shaft, and the outer end of the second coil spring is fixedly connected to the box; a coal gas opening timing mark plate is arranged between the coal gas main switch opening time length timing knob and the front side wall plate of the box, the coal gas opening timing mark plate is fixedly installed on the front side wall plate of the box, and a mark scale for indicating the coal gas opening time is arranged on the front surface of the coal gas opening timing mark plate; the first large gear is fixedly sleeved on the second rotating shaft; the first small gear and the second large gear are coaxially fixedly sleeved on the third rotating shaft, and the first small gear is engaged with the first large gear; the second small gear and the third large gear are coaxially fixedly sleeved on the fourth rotating shaft, and the second small gear is engaged with the second large gear; the third small gear and the pallet wheel are coaxially fixedly sleeved on the fifth rotating shaft, and the third small gear is engaged with the third large gear; the balance wheel is fixedly sleeved on the sixth rotating shaft, the swing lever is fixedly connected to the balance wheel, the swing lever is parallel to the sixth rotating shaft, and the pallet wheel is engaged with the swing lever; the hairspring is sleeved on the sixth rotating shaft, the inner end of the hairspring is fixedly connected to the sixth rotating shaft, and the outer end of the hairspring is fixedly connected to the box; The coal gas main switch closing trigger assembly comprises a ratchet wheel, a pawl, a pawl support frame and a cam; the ratchet wheel is fixedly sleeved on the first rotating shaft; the pawl support frame is vertically fixedly installed on the bottom plate of the box, the pawl is installed on the top of the pawl support frame, the tip end of the pawl is engaged with the ratchet teeth of the ratchet wheel; and the cam is fixedly sleeved on the second rotating shaft, and the cam is in top pushing fit with the root end of the pawl.

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