CN210566479U - Auxiliary control device for limiting gas flow - Google Patents
Auxiliary control device for limiting gas flow Download PDFInfo
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- CN210566479U CN210566479U CN201921623221.9U CN201921623221U CN210566479U CN 210566479 U CN210566479 U CN 210566479U CN 201921623221 U CN201921623221 U CN 201921623221U CN 210566479 U CN210566479 U CN 210566479U
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- connecting portion
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Abstract
The utility model provides an auxiliary control device for limiting the gas flow, which comprises a valve body, an air inlet, an air outlet and a current-limiting piece, wherein the current-limiting piece is arranged in the air inlet and comprises a sealing seat, a sealing sheet and an elastic connecting part, after the gas is conveyed to the air inlet in daily normal use, the gas enters the valve body through a cavity between the sealing sheet and the sealing seat and a through hole on the sealing seat, when the gas flow conveyed from the outside is increased, the sealing sheet is pushed by the gas to the sealing seat direction, so that the cavity between the sealing sheet and the sealing seat is reduced, the gas quantity finally entering the valve body is also reduced, the current-limiting function is realized, when the gas flow conveyed from the outside is overlarge, the sealing seat is pushed and covers on the through hole, the gas can not enter the valve body, the gas is cut off and enters the gas, so that the gas equipment can not be used, and accidents such, when the external gas flow is normal, the sealing sheet returns to the original position, and the sealing sheet can be normally used.
Description
Technical Field
The utility model relates to a valve safety technical field, in particular to restrict auxiliary control device of gas flow size.
Background
The gas is as a new energy that develops rapidly in nearly ten years, the use of a large amount of gas is the performance of social progress and city modernization, it greatly reduced the urban pollution degree, resident's gas use all adopts the form of registering one's residence basically at present, can use the gas valve to control the gas between gas table and gas apparatus, however current gas valve most all does not possess the current-limiting function, when the supply end breaks down and leads to the gas to carry and increase, carry the gas flow of gas valve constantly to increase, not only can the condition that the gas leaked appear in gas apparatus end, the gas flow is too big still can make gas valve internal pressure too big, thereby the leakage phenomenon takes place, there is certain potential safety hazard.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a inject auxiliary control device of gas flow size when the gas flow of air inlet is unusual when increasing suddenly, can plug up the air inlet, cuts off inside the gas enters into the valve body, prevents to take place to leak, the flow is too big to cause from accidents such as flame initiation user's burn, and when the gas flow of air inlet recovered the normal value, the air inlet was automatic to be opened, and the valve can normal use.
The technical scheme of the utility model is realized like this:
an auxiliary control device for limiting the gas flow comprises a valve body, a gas inlet, a gas outlet and a flow limiting piece, wherein the gas inlet is arranged on one side of the valve body and communicated with the interior of the valve body; the flow limiting piece comprises a sealing seat, an elastic connecting part and a sealing sheet, the sealing seat is in close contact with the inner wall of the air inlet, a through hole is formed in the middle of the sealing seat, one end of the elastic connecting part is arranged on the sealing seat, the other end of the elastic connecting part is connected with the sealing sheet, the sealing sheet and the sealing seat are sequentially arranged along the air inlet direction, the sealing sheet is positioned on one side of the through hole, and the area of the sealing sheet is larger than that of the through hole; when the flow limiting piece is in normal use, a cavity is formed between the sealing piece and the sealing seat and is communicated with the through hole.
Preferably, the circle center of the sealing sheet and the circle center of the through hole are located on the same horizontal line.
Preferably, a step is arranged in the air inlet, and the sealing seat is arranged at the step.
Preferably, the elastic connecting portion comprises a vertical connecting portion and a parallel connecting portion, one end of the vertical connecting portion is vertically connected with the sealing seat, the other end of the vertical connecting portion is vertically connected with the upper end of the parallel connecting portion, the parallel connecting portion is arranged in parallel with the sealing seat, and the lower end of the parallel connecting portion is connected with the sealing sheet.
Preferably, the elastic connecting portion is an arc-shaped connecting portion, one end of the arc-shaped connecting portion is connected with the sealing seat, and the other end of the arc-shaped connecting portion extends downwards and is connected with the sealing piece.
Preferably, the sealing seat, the elastic connecting part and the sealing sheet are made of special gas rubber.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides an auxiliary control device for limiting the gas flow, a flow limiting piece is arranged at the air inlet, the flow limiting piece comprises three parts, namely a sealing seat, an elastic connecting part and a sealing sheet, the elastic connecting part and the sealing seat are sequentially arranged along the air inlet direction, when in normal use, a cavity is formed between the sealing sheet and the sealing seat, the sealing sheet is at the initial position at the moment, the sealing sheet can swing when being subjected to external force, when the external force is eliminated, the sealing sheet can return to the initial position under the action of the elastic connecting part, a through hole is arranged on the sealing seat, the sealing sheet is positioned at one side of the through hole, the area of the sealing sheet is larger than that of the through hole, when the gas flow exceeds the limit, excessive gas can push the sealing sheet to move towards the through hole so as to cover the through hole, the gas inlet of gas has been cut off, when gas flow resumes normally, the gasket got back to the normal position under the effect of elastic connection portion, and the seal receptacle between form the cavity once more, inside the valve body can be carried from cavity, through-hole to the gas, realizes the control to gas flow transfinite, prevents that gas flow too big caused from accidents such as flame initiation user burn that cause, flow too big.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an embodiment of an auxiliary control device for limiting the magnitude of gas flow according to the present invention;
FIG. 2 is a cross-sectional view of an air inlet of an embodiment of an auxiliary control device for limiting the magnitude of a gas flow according to the present invention;
FIG. 3 is a structural diagram of a flow restriction member of an embodiment of an auxiliary control device for limiting the magnitude of a gas flow according to the present invention;
fig. 4 is a cross-sectional view of a flow restriction member of an embodiment of an auxiliary control device for limiting the magnitude of a gas flow according to the present invention;
fig. 5 is a structural view of a flow restriction member of a second embodiment of an auxiliary control device for restricting the magnitude of a gas flow according to the present invention;
in the figure, 1 is a valve body, 2 is an air inlet, 3 is an air outlet, 4 is a flow-limiting piece, 5 is a sealing seat, 6 is an elastic connecting part, 7 is a sealing sheet, 8 is a through hole, 9 is a cavity, 10 is a step, 11 is a vertical connecting part, 12 is a parallel connecting part, and 13 is an arc connecting part.
Detailed Description
In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, the auxiliary control device for limiting the gas flow provided by the present invention comprises a valve body 1, an air inlet 2, an air outlet 3 and a flow limiting member 4, wherein the air inlet 2 is arranged at one side of the valve body 1 and is communicated with the inside of the valve body 1, the air outlet 3 is arranged at the other side of the valve body 1 and is communicated with the inside of the valve body 1, and the flow limiting member 4 is arranged inside the air inlet 2; the flow limiting piece 4 comprises a sealing seat 5, an elastic connecting portion 6 and a sealing piece 7, the sealing seat 5 is in close contact with the inner wall of the air inlet 2, a through hole 8 is formed in the middle of the sealing seat 5, one end of the elastic connecting portion 6 is arranged on the sealing seat 5, the other end of the elastic connecting portion is connected with the sealing piece 7, the sealing piece 7 and the sealing seat 5 are sequentially arranged along the air inlet direction, the sealing piece 7 is located on one side of the through hole 8, and the area of the sealing piece 7 is larger than that of the through hole 8; when the flow limiting piece 4 is in normal use, a cavity 9 is formed between the sealing sheet 7 and the sealing seat 5, and the cavity 9 is communicated with the through hole 8.
The utility model provides a prescribe a limit to auxiliary control device of gas flow size, can be suitable for in present widely used gas pipeline, carry out the control of gas flow among equipment such as gas bottle, valve body 1 has been included, air inlet 2, gas outlet 3 and current-limiting piece 4, current-limiting piece 4 sets up inside air inlet 2, when the gas flow increase of outside transport, current-limiting piece 4 can restrict gas flow, prevent that too much gas from entering into inside 1 of valve body, current-limiting piece 4 can be when gas flow is very big even, cut off the transport of gas, prevent that large-traffic gas from entering into 1 inside gas that causes of valve body and leak or the too big accident such as flame initiation user's burn that leads to the fact of flow.
In the auxiliary control device for limiting the gas flow rate of the embodiment, the elastic connecting part 6 has elasticity, when the sealing sheet 7 is subjected to an external force, the sealing sheet 7 can swing towards the sealing seat 5, and after the external force disappears, the sealing sheet 7 can be brought back to the initial position by the elasticity of the elastic connecting part 6; when the gas flow is normal, the current-limiting piece 4 is not acted by external force, no change occurs, a cavity 9 is formed between the sealing sheet 7 and the sealing seat 5, the cavity 9 is communicated with the through hole 8, so that the gas can be conveyed into the valve body 1 from the cavity 9 and the through hole 8, subsequent gas equipment can be normally used, when the gas flow conveyed outside is increased, a thrust force is provided for the sealing sheet 7, the sealing sheet 7 swings towards the sealing seat 5, so that the cavity 9 between the sealing sheet 7 and the sealing seat 5 is reduced, at the moment, the gas conveyed into the valve body 1 is correspondingly reduced, the purpose of current limiting is achieved, if the gas flow conveyed outside is continuously increased, the sealing sheet 7 is continuously pushed towards the sealing seat 5, because the area of the sealing sheet 7 is larger than that of the through hole 8, the sealing sheet 7 finally completely covers the through hole 8, thereby the gas can't enter into inside the valve body 1 through-hole 8, has cut off the transport of gas, prevents that too much gas from entering into valve body 1 and causing the gas to leak or the too big flame that causes of flow causes from the user burn, and when the gas flow of outside transport recovered to the normal value, elastic connection portion 6 took back initial position with gasket 7 for form cavity 9 between gasket 7 and the seal receptacle 5, thereby can drop into the use again.
Preferably, the circle center of the sealing sheet 7 and the circle center of the through hole 8 are located on the same horizontal line.
In order to guarantee when gas flow is too big, gasket 7 can cover through-hole 8, need to guarantee that the area of gasket 7 is greater than the area of through-hole 8, the gasket 7 of this embodiment, seal receptacle 5 is the disk structure, the through-hole 8 that sets up at seal receptacle 5 middle part also is circular, and the gasket 7, the centre of a circle of through-hole 8 and seal receptacle 5 cross-section is on same water flat line, thereby can guarantee the cover of gasket 7 to through-hole 8, the cross-sectional view of current-limiting piece 4 shown in figure 4, wherein the diameter of gasket 7 is 7mm, the diameter of through-hole 8 is 4.2mm, the diameter of seal receptacle 5 is then 17.85 mm.
Preferably, a step 10 is arranged in the air inlet 2, and the sealing seat 5 is arranged at the step 10.
Specifically, the seal seat 5 is closely contacted with the inner wall of the air inlet 2 to prevent gas leakage, in order to prevent the excessive gas flow from opening the flow limiting piece 4, a circular step 10 is arranged on the inner wall of the air inlet 2 in the direction close to the valve body 1, the seal seat 5 is arranged on the step 10, and the diameter of the circle formed by the step 10 is smaller than the section diameter of the seal seat 5.
Preferably, the elastic connecting part 6 comprises a vertical connecting part 11 and a parallel connecting part 12, one end of the vertical connecting part 11 is vertically connected with the sealing seat 5, the other end of the vertical connecting part is vertically connected with the upper end of the parallel connecting part 12, the parallel connecting part 12 is arranged in parallel with the sealing seat 5, the lower end of the parallel connecting part 12 is connected with the sealing sheet 7, the elastic connecting part 6 of the embodiment is of a right-angle structure and comprises two mutually vertical connecting parts, the resetting of the sealing disc 7 is achieved by means of two connections, whereas for the elastic connection 6, it may be provided in other configurations, such as a second embodiment shown in fig. 5, which differs from the first embodiment only in the structure of the elastic connecting portion 6, the elastic connecting portion 6 of the second embodiment being an arc-shaped connecting portion 13, one end of the arc-shaped connecting part 13 is connected with the sealing seat 5, and the other end of the arc-shaped connecting part extends downwards and is connected with the sealing sheet 7.
Preferably, the sealing seat 5, the elastic connecting part 6 and the sealing sheet 7 are made of gas-dedicated rubber.
Can prevent the problems of corrosion, high-temperature melting and the like in the gas transmission process and ensure the normal transportation of the gas.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An auxiliary control device for limiting the gas flow is characterized by comprising a valve body, a gas inlet, a gas outlet and a flow limiting piece, wherein the gas inlet is arranged on one side of the valve body and is communicated with the interior of the valve body; the flow limiting piece comprises a sealing seat, an elastic connecting part and a sealing sheet, the sealing seat is in close contact with the inner wall of the air inlet, a through hole is formed in the middle of the sealing seat, one end of the elastic connecting part is arranged on the sealing seat, the other end of the elastic connecting part is connected with the sealing sheet, the sealing sheet and the sealing seat are sequentially arranged along the air inlet direction, the sealing sheet is positioned on one side of the through hole, and the area of the sealing sheet is larger than that of the through hole; when the flow limiting piece is in normal use, a cavity is formed between the sealing piece and the sealing seat and is communicated with the through hole.
2. An auxiliary control device for limiting the magnitude of gas flow according to claim 1, wherein the center of the sealing sheet and the center of the through hole are located on the same horizontal line.
3. An auxiliary control device for limiting the magnitude of gas flow as claimed in claim 1, wherein a step is provided in said inlet, and said sealing seat is provided at said step.
4. An auxiliary control device for limiting the magnitude of gas flow according to claim 1, wherein said elastic connecting portion comprises a vertical connecting portion and a parallel connecting portion, one end of said vertical connecting portion is vertically connected to said sealing seat, the other end of said vertical connecting portion is vertically connected to the upper end of said parallel connecting portion, said parallel connecting portion is arranged in parallel with said sealing seat, and the lower end of said parallel connecting portion is connected to said sealing piece.
5. An auxiliary control device for limiting the magnitude of gas flow according to claim 1, wherein said flexible connecting portion is an arc-shaped connecting portion, one end of said arc-shaped connecting portion is connected to said sealing seat, and the other end of said arc-shaped connecting portion extends downward and is connected to said sealing plate.
6. An auxiliary control device for limiting the magnitude of gas flow according to any one of claims 1-5, wherein the sealing seat, the elastic connecting portion and the sealing sheet are made of rubber dedicated to gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921623221.9U CN210566479U (en) | 2019-09-27 | 2019-09-27 | Auxiliary control device for limiting gas flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921623221.9U CN210566479U (en) | 2019-09-27 | 2019-09-27 | Auxiliary control device for limiting gas flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566479U true CN210566479U (en) | 2020-05-19 |
Family
ID=70658870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921623221.9U Active CN210566479U (en) | 2019-09-27 | 2019-09-27 | Auxiliary control device for limiting gas flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210566479U (en) |
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2019
- 2019-09-27 CN CN201921623221.9U patent/CN210566479U/en active Active
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