Stop valve for natural gas installation

Abstract

The utility model relates to the technical field of gas cut-off valves, in particular to a cut-off valve for natural gas installation, which comprises a valve body, a gas inlet flange is arranged at one end of the valve body, a gas outlet flange is arranged at the other end of the valve body, a Z-shaped partition plate is arranged in the valve body, and a conical hopper is arranged at the bottom end of the Z-shaped partition plate. A natural gas sensing device is arranged on one side of the electromagnetic valve, an alarm device is arranged on the other side of the natural gas sensing device, a sliding rod is arranged in the middle of the electromagnetic valve, and a sealing plug is arranged at the bottom end of the sliding rod; the device has the beneficial effects that through the arrangement of the electromagnetic valve, the natural gas sensing device and the alarm device, when the natural gas sensing device detects natural gas leakage, a signal is sent to the electromagnetic valve, the electromagnetic valve is immediately powered off, the sealing plug blocks the ventilation hole under the action of the spring, and meanwhile, the alarm device can give an alarm sound to remind a person to open a window for ventilation; therefore, the safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas shut-off valves, in particular to a shut-off valve for natural gas installation. Background Art

[0002] The gas shut-off valve is a new type of safety device for gas pipeline projects, mainly used in the following situations: Connected to a combustible gas leak monitoring instrument. When the instrument detects a combustible gas leak, it automatically and quickly closes the main gas supply valve, cutting off the gas supply and promptly preventing a serious accident. Connected to the extreme temperature (or pressure) safety controller of thermal equipment. When the temperature or pressure at the detection point in the equipment exceeds the set limit value, the gas supply valve is automatically and quickly closed, stopping the fuel supply. Connected to the central fire alarm system of a high-rise building. When a fire occurs in the building, the gas supply in the building is automatically cut off to prevent a gas explosion. Installing a BZCK gas shut-off valve in the gas supply network of a city or factory can centrally control it from a central control room and remotely control it from a distance, effectively shutting off the pipeline gas supply at the accident site.

[0003] A high-safety natural gas emergency shut-off valve disclosed in Chinese utility model patent application publication number CN 219013503 U includes a solenoid valve body, an inlet flange, a manual valve body, and an outlet flange. The inlet flange is rotatably connected to the left side wall of the solenoid valve body, the manual valve body is fixedly connected to the right side wall of the solenoid valve body, and the outlet flange is fixedly connected to the bottom of the manual valve body. A limit ring is fixedly connected to the left side of the inner cavity of the manual valve body, a manual valve core is rotatably connected to the inner cavity of the manual valve body, and a rotating shaft is fixedly connected to the right side wall of the manual valve core. This high-safety natural gas emergency shut-off valve has a reasonable structural design, so that when the emergency shut-off valve fails, natural gas can be manually shut off to avoid safety accidents. It also reduces installation difficulty and improves installation convenience while ensuring vertical installation. However, this high-safety natural gas emergency shut-off valve cannot detect the occurrence of natural gas leaks, and the sealing performance of this high-safety natural gas emergency shut-off valve is poor when shutting off gas. Utility Model Content

[0004] The purpose of the present utility model is to provide a shut-off valve for natural gas installation to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A shut-off valve for natural gas installation, comprising:

[0007] A valve body, one end of which is provided with an air inlet flange, the other end of which is provided with an air outlet flange, a Z-shaped partition is provided inside the valve body, a conical bucket is provided at the bottom end of the Z-shaped partition, and a limit frame is provided at the top end of the Z-shaped partition;

[0008] A solenoid valve is provided with a natural gas sensing device on one side of the solenoid valve, an alarm device is provided on the other side of the natural gas sensing device, a sliding rod is provided in the middle of the solenoid valve, and a sealing plug is provided at the bottom end of the sliding rod.

[0009] Preferably, one end of the valve body is fixedly connected to an air inlet flange, and a plurality of first screw holes are evenly arranged on the edge of the surface of the air inlet flange.

[0010] Preferably, the other end of the valve body is fixedly connected to an air outlet flange, and a plurality of second screw holes are evenly provided on the edge of the surface of the air outlet flange.

[0011] Preferably, a Z-shaped partition is fixedly connected to the interior of the valve body, and a through hole is opened in the middle of the Z-shaped partition.

[0012] Preferably, a conical bucket is fixedly connected to the bottom end of the through hole, a plurality of air holes are evenly opened at the bottom end of the conical bucket, and a limiting frame is fixedly connected to the top end of the through hole.

[0013] Preferably, a sliding hole is opened at the top end of the valve body, and a sealing ring is fixedly connected to the interior of the sliding hole.

[0014] Preferably, the top of the valve body is fixedly connected to a support seat, the top of the support seat is fixedly connected to a solenoid valve, one side of the solenoid valve is fixedly connected to a natural gas sensing device, and the other side of the natural gas sensing device is fixedly connected to an alarm device.

[0015] Preferably, a sliding rod is slidably connected to the middle of the sealing ring, the top end of the sliding rod passes through the solenoid valve, and the top end of the sliding rod is fixedly connected to a lifting button.

[0016] Preferably, a limiting ring is fixedly connected to the middle of the slide rod surface, an extrusion plate is fixedly connected to the bottom end of the slide rod, a sealing plug is fixedly connected to the bottom end of the extrusion plate, and the sealing plug and the conical bucket are cooperatively connected.

[0017] Preferably, a spring is sleeved on the surface of the sliding rod, the top end of the spring abuts against the top end of the limiting frame, and the bottom end of the spring abuts against the top end of the extrusion plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model is provided with a solenoid valve, a natural gas sensing device and an alarm device. When in use, the alarm device is fixedly connected to one side of the natural gas sensing device, and the natural gas sensing device is fixedly connected to one side of the solenoid valve. When the natural gas sensing device detects a natural gas leak, it will send a signal to the solenoid valve, and the solenoid valve will immediately cut off the power. The sealing plug will seal the air vent under the action of the spring. At the same time, the alarm device will sound an alarm to remind people to open the window for ventilation, thereby greatly improving safety. By providing the conical bucket and the sealing plug, the sealing plug and the conical bucket are cooperated and connected with each other when in use, so that the sealing effect will not be affected by the deformation of the sealing plug, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve body of the present utility model;

[0023] Figure 4 This is a schematic diagram of the slide bar structure of the present utility model.

[0024] In the figure: 1. Valve body; 101. Sliding hole; 2. Inlet flange; 201. First screw hole; 3. Outlet flange; 301. Second screw hole; 4. Z-shaped partition; 401. Through hole; 5. Conical bucket; 501. Air vent; 6. Limiting frame; 7. Support seat; 8. Sealing ring; 9. Sliding rod; 10. Lifting button; 11. Limiting ring; 12. Extrusion plate; 13. Sealing plug; 14. Spring; 15. Solenoid valve; 16. Natural gas sensing device; 17. Alarm device. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0026] Example 1:

[0027] See also Figures 1 to 4 The utility model provides a technical solution: a shut-off valve for natural gas installation, comprising:

[0028] A valve body 1, one end of which is provided with an air inlet flange 2, the other end of which is provided with an air outlet flange 3, a Z-shaped baffle 4 is provided inside the valve body 1, a conical bucket 5 is provided at the bottom end of the Z-shaped baffle 4, and a limiting frame 6 is provided at the top end of the Z-shaped baffle 4;

[0029] A solenoid valve 15 is provided with a natural gas sensing device 16 on one side of the solenoid valve 15 and an alarm device 17 on the other side of the natural gas sensing device 16. A sliding rod 9 is provided in the middle of the solenoid valve 15 and a sealing plug 13 is provided at the bottom end of the sliding rod 9.

[0030] By setting the air inlet flange 2 and the air outlet flange 3, the air inlet flange 2 and the air outlet flange 3 are fixedly connected to the two ends of the valve body 1 respectively when in use, and then connected to the air inlet pipe and the air outlet pipe respectively through fixing bolts, thereby achieving the effect of convenient and quick installation.

[0031] Example 2:

[0032] like Figure 2 As shown, the structure of a shut-off valve for natural gas installation disclosed in the second embodiment of the present invention is basically the same as that in the first embodiment, except that:

[0033] One end of the valve body 1 is fixedly connected to an air inlet flange 2 , and a plurality of first screw holes 201 are evenly formed on the edge of the surface of the air inlet flange 2 .

[0034] The other end of the valve body 1 is fixedly connected to an outlet flange 3 , and a plurality of second screw holes 301 are evenly formed on the edge of the surface of the outlet flange 3 .

[0035] A Z-shaped partition plate 4 is fixedly connected to the interior of the valve body 1 , and a through hole 401 is opened in the middle of the Z-shaped partition plate 4 .

[0036] The bottom end of the through hole 401 is fixedly connected to a conical bucket 5 , and a plurality of air holes 501 are evenly opened at the bottom end of the conical bucket 5 . The top end of the through hole 401 is fixedly connected to a limiting frame 6 .

[0037] A sliding hole 101 is formed at the top of the valve body 1 , and a sealing ring 8 is fixedly connected to the interior of the sliding hole 101 .

[0038] The top of the valve body 1 is fixedly connected to a support seat 7, the top of the support seat 7 is fixedly connected to a solenoid valve 15, one side of the solenoid valve 15 is fixedly connected to a natural gas sensor 16, and the other side of the natural gas sensor 16 is fixedly connected to an alarm device 17.

[0039] By setting up the solenoid valve 15, the natural gas sensor 16 and the alarm device 17, when in use, the alarm device 17 is fixedly connected to one side of the natural gas sensor 16, and the natural gas sensor 16 is fixedly connected to one side of the solenoid valve 15. When the natural gas sensor 16 detects a natural gas leak, it will send a signal to the solenoid valve 15, and the solenoid valve 15 will immediately cut off the power. The sealing plug 13 will block the air vent 501 under the action of the spring 14. At the same time, the alarm device 17 will sound an alarm to remind people to open the window for ventilation, thereby greatly improving safety.

[0040] Example 3:

[0041] like Figures 3 and 4 As shown, the shut-off valve for natural gas installation disclosed in the third embodiment of the present invention has a structure that is substantially the same as that in the second embodiment, except that:

[0042] The middle of the sealing ring 8 is slidably connected to a sliding rod 9 , the top end of the sliding rod 9 passes through the solenoid valve 15 , and the top end of the sliding rod 9 is fixedly connected to a lifting button 10 .

[0043] The middle part of the surface of the slide rod 9 is fixedly connected to a limit ring 11, the bottom end of the slide rod 9 is fixedly connected to an extrusion plate 12, the bottom end of the extrusion plate 12 is fixedly connected to a sealing plug 13, and the sealing plug 13 and the conical bucket 5 are mutually connected.

[0044] A spring 14 is sleeved on the surface of the slide rod 9 , the top end of the spring 14 abuts against the top end of the limiting frame 6 , and the bottom end of the spring 14 abuts against the top end of the extrusion plate 12 .

[0045] By setting the conical bucket 5 and the sealing plug 13, the sealing plug 13 and the conical bucket 5 are matched and connected with each other during use, so that the sealing effect will not be affected by the deformation of the sealing plug 13, thereby improving the sealing effect.

[0046] The specific solution is as follows: first, the air inlet flange 2 and the air outlet flange 3 are connected to the air inlet pipe and the air outlet pipe respectively through fixing bolts. Through the setting of the air inlet flange 2 and the air outlet flange 3, the air inlet flange 2 and the air outlet flange 3 are fixedly connected to the two ends of the valve body 1 respectively when in use, and then connected to the air inlet pipe and the air outlet pipe respectively through fixing bolts, so as to achieve the effect of convenient and quick installation, and then the solenoid valve 15 is energized, and then the sliding rod 9 is pulled by the lifting button 10 to separate the sealing plug 13 from the conical bucket 5. Through the setting of the conical bucket 5 and the sealing plug 13, the sealing plug 13 and the conical bucket 5 are matched and connected with each other when in use, so that the sealing effect will not be affected by the deformation of the sealing plug 13, thereby improving the sealing effect. The sealing effect is improved. The solenoid valve 15 limits the slide rod 9 through electromagnetic induction. At this time, natural gas is in a circulating state. Through the setting of the solenoid valve 15, the natural gas sensing device 16 and the alarm device 17, the alarm device 17 is fixedly connected to one side of the natural gas sensing device 16 when in use, and the natural gas sensing device 16 is fixedly connected to one side of the solenoid valve 15. When the natural gas sensing device 16 detects a natural gas leak, it will send a signal to the solenoid valve 15, and the solenoid valve 15 will immediately cut off the power. The sealing plug 13 will block the air vent 501 under the action of the spring 14. At the same time, the alarm device 17 will sound an alarm to remind people to open the window for ventilation, thereby greatly improving safety.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0048] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A shut-off valve for natural gas installation, characterized in that: include: A valve body (1), wherein one end of the valve body (1) is provided with an air inlet flange (2), the other end of the valve body (1) is provided with an air outlet flange (3), a Z-shaped partition (4) is provided inside the valve body (1), a conical bucket (5) is provided at the bottom end of the Z-shaped partition (4), and a limiting frame (6) is provided at the top end of the Z-shaped partition (4); A solenoid valve (15) is provided with a natural gas sensing device (16) on one side of the solenoid valve (15), an alarm device (17) is provided on the other side of the natural gas sensing device (16), a sliding rod (9) is provided in the middle of the solenoid valve (15), and a sealing plug (13) is provided at the bottom end of the sliding rod (9).

2. A shut-off valve for natural gas installation according to claim 1, characterized in that: One end of the valve body (1) is fixedly connected to an air inlet flange (2), and a plurality of first screw holes (201) are evenly arranged at the edge of the surface of the air inlet flange (2).

3. A shut-off valve for natural gas installation according to claim 2, characterized in that: The other end of the valve body (1) is fixedly connected to an air outlet flange (3), and a plurality of second screw holes (301) are evenly arranged at the edge of the surface of the air outlet flange (3).

4. A shut-off valve for natural gas installation according to claim 3, characterized in that: A Z-shaped partition (4) is fixedly connected to the interior of the valve body (1), and a through hole (401) is provided in the middle of the Z-shaped partition (4).

5. A shut-off valve for natural gas installation according to claim 4, characterized in that: The bottom end of the through hole (401) is fixedly connected to a conical bucket (5), the bottom end of the conical bucket (5) is evenly provided with a plurality of air holes (501), and the top end of the through hole (401) is fixedly connected to a limiting frame (6).

6. A shut-off valve for natural gas installation according to claim 5, characterized in that: A sliding hole (101) is provided at the top end of the valve body (1), and a sealing ring (8) is fixedly connected to the interior of the sliding hole (101).

7. A shut-off valve for natural gas installation according to claim 6, characterized in that: The top end of the valve body (1) is fixedly connected to a support seat (7), the top end of the support seat (7) is fixedly connected to a solenoid valve (15), one side of the solenoid valve (15) is fixedly connected to a natural gas sensing device (16), and the other side of the natural gas sensing device (16) is fixedly connected to an alarm device (17).

8. A shut-off valve for natural gas installation according to claim 7, characterized in that: The middle of the sealing ring (8) is slidably connected to a slide rod (9), the top end of the slide rod (9) passes through the solenoid valve (15), and the top end of the slide rod (9) is fixedly connected to a lifting button (10).

9. A shut-off valve for natural gas installation according to claim 8, characterized in that: The middle of the surface of the slide rod (9) is fixedly connected to a limiting ring (11), the bottom end of the slide rod (9) is fixedly connected to an extrusion plate (12), the bottom end of the extrusion plate (12) is fixedly connected to a sealing plug (13), and the sealing plug (13) and the conical bucket (5) are mutually connected.

10. A shut-off valve for natural gas installation according to claim 9, characterized in that: A spring (14) is sleeved on the surface of the slide rod (9), the top end of the spring (14) abuts against the top end of the limit frame (6), and the bottom end of the spring (14) abuts against the top end of the extrusion plate (12).

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