Gas safety valve and gas pipeline

Abstract

The utility model relates to the field of gas safety valves, in particular to a gas safety valve and a gas pipeline. The gas safety valve is provided with at least four gas inlet holes and at least four gas outlet holes, and the proportion range of the diameter of the gas outlet holes to the valve bracket is 0.1-0.15, so that when gas flows out of the gas outlet holes from the valve bracket, the pressure at the gas outlet holes is reduced, and the pressure at the gas inlet holes is increased; when the pressure of the gas outlet hole is reduced, the pressure of the gas inlet hole is kept unchanged, and the pressure difference is increased, the pressure difference between the gas inlet hole and the gas outlet hole is generated and detected, and then the driving structure drives the valve element to linearly move in the valve support according to the detected pressure difference, so that the gas safety valve is opened; and if yes, the driving structure drives the valve element to linearly move in the valve support according to the detected pressure difference value so as to close the gas safety valve. The gas safety valve can be selectively opened or closed according to the pressure difference value of the gas inlet hole and the gas outlet hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas safety valve field especially relates to a gas safety valve and gas pipeline. BACKGROUND

[0002] The safety valve of the gas pipeline in prior art is a manual valve, which needs to be opened or closed manually by the user. Usually, the safety valve installed in the user's room is in an open state to facilitate the user to use gas. When the user goes out or does not use it for a long time, the safety valve will be closed manually. However, when the safety valve is in an open state for a long time, if the gas outlet of the gas stove at home is blocked or gas leakage occurs, it will cause a serious gas accident.

[0003] Therefore, there is an urgent need for a gas safety valve to solve the above technical problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a gas safety valve and gas pipeline, which can be automatically opened when the user uses gas appliances and automatically closed when the user closes the gas appliances to avoid gas accidents.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect, a gas safety valve is provided, which includes a valve support, a valve core and a driving structure. The valve support has an inlet hole and at least four outlet holes. The inlet hole is arranged at the first end of the valve support, the driving structure is arranged at the second end of the valve support, and the outlet holes are arranged on the outer peripheral wall of the valve support. The valve core is arranged in the valve support and can move along the axial direction of the valve support to cut off or connect the inlet hole and the outlet hole. The diameter ratio of the outlet hole to the valve support is in the range of 0.1-0.15. The valve core is connected with the driving structure, and the driving structure can drive the valve core to move linearly in the valve support according to the pressure difference between the inlet hole and the outlet hole.

[0007] As a preferred technical solution of the above-mentioned gas safety valve, the number of outlet holes is six.

[0008] As a preferred technical solution of the above-mentioned gas safety valve, the diameter ratio of the outlet hole to the inlet hole is 1:7.5.

[0009] As a preferred technical solution of the above-mentioned gas safety valve, the diameter of the outlet hole is 2mm, and the diameter of the inlet hole is 15mm.

[0010] As a preferred technical scheme of the gas safety valve, the gas outlet holes are arranged in three rows along the axial direction of the valve holder, and the number of the gas outlet holes in each row is two.

[0011] As a preferred technical scheme of the gas safety valve, the gas safety valve further comprises a housing, and the valve holder is located in a space formed by the housing.

[0012] As a preferred technical scheme of the gas safety valve, the gas safety valve further comprises a first pressure and temperature sensor and a second pressure and temperature sensor, the first pressure and temperature sensor is arranged at the gas inlet hole for detecting the gas inlet pressure at the gas inlet hole, and the second pressure and temperature sensor is arranged at the inner side wall of the housing for detecting the pressure in the space formed by the housing.

[0013] As a preferred technical scheme of the gas safety valve, the driving structure comprises a driving member and a transmission member, and the driving member is connected with the valve core through the transmission member to drive the valve core to move along the axial direction of the valve holder.

[0014] In the second aspect, a gas pipeline is provided, which comprises a pipeline main body and a gas safety valve connected with the pipeline main body, and the gas safety valve is the gas safety valve according to any one of the above-mentioned schemes.

[0015] The utility model discloses at least has the following beneficial effects:

[0016] The gas safety valve has a gas inlet hole and a gas outlet hole, and the number of the gas outlet holes is at least four, the diameter of the gas outlet hole and the valve holder are in a proportional range of 0.1-0.15, so that when the gas flows out of the valve holder through the gas outlet hole, the pressure at the gas outlet hole decreases, and the pressure at the gas inlet hole increases, then the pressure difference between the gas inlet hole and the gas outlet hole is generated and detected, and then the driving structure drives the valve core to move linearly in the valve holder according to the detected pressure difference, so as to open the gas safety valve, when the pressure of the gas outlet hole decreases, and the pressure of the gas inlet hole remains unchanged, the pressure difference increases, then the driving structure drives the valve core to move linearly in the valve holder according to the detected pressure difference, so as to close the gas safety valve. Compared with the prior art, the gas safety valve provided by the utility model can selectively open or close the gas safety valve according to the pressure difference between the gas inlet hole and the gas outlet hole. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and these drawings by those skilled in the art without creating labor.

[0018] Figure 1 A first structure schematic view of the gas safety valve is provided for the embodiment of the utility model;

[0019] Figure 2 A second structure schematic view of the gas safety valve is provided for the embodiment of the utility model;

[0020] Figure 3 A sectional view of the gas safety valve is provided for the embodiment of the utility model;

[0021] Figure 4 A relationship chart of the difference between the inlet hole and the outlet hole of the gas safety valve and the detection times when the user uses the gas is provided for the embodiment of the utility model.

[0022] In the drawing:

[0023] 1, valve support; 11, inlet hole; 12, outlet hole; 2, valve core; 3, driving structure; 4, shell; 5, first pressure temperature sensor; 6, second pressure temperature sensor. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all the structures.

[0025] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; It can be mechanical connection, or electrical connection; It can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0028] In order to enable the gas safety valve to automatically open when the user uses gas and close when the user does not use gas, this utility model embodiment provides a gas safety valve to improve safety.

[0029] like Figures 1 to 3 As shown, specifically, the gas safety valve includes a valve support 1, a valve core 2, and a drive structure 3. The valve support 1 has an inlet 11 and at least four outlets 12. The inlet 11 is located at the first end of the valve support 1, and the drive structure 3 is located at the second end of the valve support 1. The outlets 12 are located on the outer peripheral wall of the valve support 1. The valve core 2 is located inside the valve support 1 and can move along the axial direction of the valve support 1 to cut off or connect the inlet 11 and the outlets 12. The ratio of the diameter of the outlet 12 to the diameter of the valve support 1 is in the range of 0.1-0.15. The valve core 2 is connected to the drive structure 3, and the drive structure 3 can drive the valve core 2 to move linearly within the valve support 1 according to the pressure difference between the inlet 11 and the outlets 12.

[0030] The gas safety valve provided by this utility model has an inlet port 11 and an outlet port 12, with at least four outlet ports 12. The ratio between the diameter of the outlet port 12 and the valve support 1 is in the range of 0.1-0.15. This limitation allows the pressure at the outlet port 12 to decrease when gas flows out of the valve support 1, while the pressure at the inlet port 11 increases. This generates and detects a pressure difference between the inlet port 11 and the outlet port 12. The drive structure 3 then drives the valve core 2 to move linearly within the valve support 1 based on the detected pressure difference, thereby opening the gas safety valve. When the pressure at the outlet port 12 decreases while the pressure at the inlet port 11 remains constant, the pressure difference increases. The drive structure 3 then drives the valve core 2 to move linearly within the valve support 1 based on the detected pressure difference, thereby closing the gas safety valve. Compared to the prior art, the gas safety valve provided by this utility model can selectively open or close the gas safety valve based on the pressure difference between the inlet port 11 and the outlet port 12.

[0031] Preferably, the number of vent holes 12 is six. Through experimental comparison, when the number of vent holes 12 is six, the ratio of the diameter of the vent hole 12 to the diameter of the valve support 1 is in the range of 0.1-0.15, which further improves the sensitivity of the gas safety valve response.

[0032] For example, the ratio of the diameter of the outlet hole 12 to the diameter of the valve holder 1 is in the range of 0.1, 0.12, 0.13, 0.14 or 0.15, preferably, the ratio of the diameter of the outlet hole 12 to the diameter of the valve holder 1 is 0.133, which is not limited in the embodiment.

[0033] Table 1 below is the pressure difference between the inlet and the outlet when the outlet hole 12 is six, wherein the pressure data is compensated for 16.

[0034] Table 1

[0035]

[0036]

[0037]

[0038] It is found through experiments that when the number of outlet holes 12 is four or five, the pressure difference can meet the requirements, but the gas consumption cannot meet the requirements, and the gas appliance is unstable when burning, and the flame is unstable. When the number of outlet holes 12 is seven or eight, the pressure difference does not meet the requirements. When the number of outlet holes 12 is six, both the pressure difference and the gas consumption can meet the requirements, and the gas stove is stable when burning.

[0039] In some embodiments, the ratio of the diameter of the outlet hole 12 to the diameter of the inlet hole 11 is 1:7.5. In this way, a pressure difference can be formed between the outlet hole 12 and the inlet hole 11, so as to ensure that the gas safety valve is opened or closed according to the user's gas demand.

[0040] For example, the diameter of the outlet hole 12 is 2mm, and the area is 3.14. The area of the six outlet holes 12 is 18.84mm 2 The diameter of the inlet hole 11 is 15mm, and the area is 176.625mm 2 In this way, the gas safety valve can be opened or closed according to the user's gas demand. Of course, other values can be used in other embodiments.

[0041] As shown in Figure 3 The gas safety valve further comprises a housing 4, and the valve holder 1 is located in the space formed by the housing 4. The housing 4 can provide support for the valve holder 1 and facilitate the installation of the gas safety valve on the gas pipeline.

[0042] In some embodiments, the gas safety valve further comprises a first pressure temperature sensor 5 and a second pressure temperature sensor 6, the first pressure temperature sensor 5 is arranged at the air inlet hole 11 for detecting the air inlet pressure at the air inlet hole 11, and the second pressure temperature sensor 6 is arranged at the inner side wall of the shell 4 for detecting the pressure in the space formed by the shell 4. Specifically, the second pressure temperature sensor 6 can be arranged at the position of the inner wall of the shell 4 and towards the air outlet hole 12, so that the pressure and temperature of the air outlet hole 12 can be quickly obtained.

[0043] In some embodiments, the air outlet holes 12 are arranged in a row along the circumference of the valve support 1, and the number of the air outlet holes 12 is six.

[0044] In other embodiments, in order to improve the processing efficiency of the air outlet holes 12, the air outlet holes 12 are arranged in three rows along the axial direction of the valve support 1, and the number of the air outlet holes 12 in each row is two. Such arrangement can also make the arrangement of the air outlet holes 12 more compact, and the gas discharged from the air outlet holes 12 is preferably blown towards the second pressure temperature sensor 6.

[0045] In some embodiments, the driving structure 3 comprises a driving member and a transmission member, the driving member is connected with the valve core 2 through the transmission member to drive the valve core 2 to move along the axial direction of the valve support 1.

[0046] For example, the driving member can be a motor, and the transmission member can be a gear and rack transmission mechanism, which comprises a gear and a rack, the gear is engaged with the rack, the motor is connected with the gear, and the rack converts the rotation of the gear into linear movement, so that the motor drives the valve core 2 to move linearly and along the axial direction of the valve support 1.

[0047] Of course, in other embodiments, the transmission member can be a screw nut structure, which can also realize linear driving of the valve core 2.

[0048] In addition, in other embodiments, the driving structure 3 can also only comprise a driving member, which can be a cylinder.

[0049] Figure 4 The figure shows the relationship between the difference between the air inlet and the air outlet of the gas safety valve and the detection times of the user using gas in the embodiment. The first pressure temperature sensor 5 and the second pressure temperature sensor 6 both detect the pressure and temperature at the corresponding position every preset time, which can be 1s, 40ms, etc., and is not limited in the embodiment.

[0050] The utility model also provides a kind of gas pipeline, and the gas pipeline includes pipeline main body and pipeline main body connected gas safety valve, and wherein safety is the gas safety valve provided by the utility model embodiment.

[0051] Since the gas pipeline comprises the gas safety valve, the gas safety valve has the gas inlet hole 11 and the gas outlet hole 12, and the number of the gas outlet hole 12 is at least four, and the diameter ratio of the gas outlet hole 12 to the valve support 1 is in the range of 0.1-0.15, so that when the gas flows out of the valve support 1 through the gas outlet hole 12, the pressure at the gas outlet hole 12 is reduced, and the pressure at the gas inlet hole 11 is increased, then the pressure difference between the gas inlet hole 11 and the gas outlet hole 12 is generated and detected, and then the driving structure 3 drives the valve core 2 to linearly move in the valve support 1 according to the detected pressure difference, so as to open the gas safety valve, when the pressure of the gas outlet hole 12 is reduced, and the pressure of the gas inlet hole 11 remains unchanged, the pressure difference is increased, then the driving structure 3 drives the valve core 2 to linearly move in the valve support 1 according to the detected pressure difference, so as to close the gas safety valve. Compared with the prior art, the gas safety valve provided by the utility model can selectively open or close the gas safety valve according to the pressure difference between the gas inlet hole 11 and the gas outlet hole 12.

[0052] Since the gas pipeline comprises the gas safety valve, the gas safety valve has the gas inlet hole 11 and the gas outlet hole 12, and the number of the gas outlet hole 12 is at least four, and the diameter ratio of the gas outlet hole 12 to the valve support 1 is in the range of 0.1-0.15, so that when the gas flows out of the valve support 1 through the gas outlet hole 12, the pressure at the gas outlet hole 12 is reduced, and the pressure at the gas inlet hole 11 is increased, then the pressure difference between the gas inlet hole 11 and the gas outlet hole 12 is generated and detected, and then the driving structure 3 drives the valve core 2 to linearly move in the valve support 1 according to the detected pressure difference, so as to open the gas safety valve, when the pressure of the gas outlet hole 12 is reduced, and the pressure of the gas inlet hole 11 remains unchanged, the pressure difference is increased, then the driving structure 3 drives the valve core 2 to linearly move in the valve support 1 according to the detected pressure difference, so as to close the gas safety valve. Compared with the prior art, the gas safety valve provided by the utility model can selectively open or close the gas safety valve according to the pressure difference between the gas inlet hole 11 and the gas outlet hole 12.

[0053] In addition, the above is only a preferred embodiment of the utility model and the technical principle applied. Those skilled in the art will understand that the utility model is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the utility model. Therefore, although the utility model has been described in more detail through the above embodiments, the utility model is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the utility model concept, and the scope of the utility model is determined by the appended claims.

Claims

1. A gas safety valve, characterised in that, The valve support (1) has an air inlet hole (11) arranged at the first end of the valve support (1) and at least four air outlet holes (12) arranged at the peripheral wall of the valve support (1), the valve core (2) is arranged in the valve support (1) and can move along the axial direction of the valve support (1) to cut off or connect the air inlet hole (11) and the air outlet hole (12), the diameter ratio of the air outlet hole (12) to the valve support (1) ranges from 0.1 to 0.15, the valve core (2) is connected with the driving structure (3), and the driving structure (3) can drive the valve core (2) to move linearly in the valve support (1) according to the pressure difference between the air inlet hole (11) and the air outlet hole (12).

2. Gas safety valve according to claim 1, characterized in that The number of the air outlet holes (12) is six.

3. Gas safety valve according to claim 2, characterized in that The diameter ratio of the air outlet hole (12) to the air inlet hole (11) is 1:7.

5.

4. The gas safety valve according to claim 3, characterized in that The diameter of the air outlet hole (12) is 2 mm, and the diameter of the air inlet hole (11) is 15 mm.

5. The gas safety valve according to claim 2, wherein The air outlet holes (12) are arranged in three rows along the axial direction of the valve support (1), and the number of the air outlet holes (12) in each row is two.

6. The gas safety valve according to claim 1, wherein The gas safety valve further comprises a housing (4), and the valve support (1) is located in the space formed by the housing (4).

7. The gas safety valve according to claim 6, characterized in that The gas safety valve further comprises a first pressure and temperature sensor (5) and a second pressure and temperature sensor (6), the first pressure and temperature sensor (5) is arranged at the air inlet hole (11) to detect the inlet pressure at the air inlet hole (11), and the second pressure and temperature sensor (6) is arranged at the inner side wall of the housing (4) to detect the pressure in the space formed by the housing (4).

8. The gas safety valve according to claim 1, characterized in that The driving structure (3) comprises a driving member and a transmission member, the driving member is connected with the valve core (2) through the transmission member to drive the valve core (2) to move along the axial direction of the valve support (1).

9. A gas piping system, characterised in that, The pipeline body is connected with the gas safety valve, and the gas safety valve is the gas safety valve according to any one of claims 1-8.

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