Anti-leakage natural gas anti-freezing valve

Abstract

The anti-leakage natural gas anti-freezing valve comprises a valve pipe, a base, a heating box and a heating mechanism, the heating box is installed on the top of the base and located below the valve pipe, and a valve rod is installed in the middle of the top face of the valve pipe; the heating mechanisms are symmetrically installed on the valve pipe, each heating mechanism comprises an upper heating plate, a lower heating plate, a liquid return ring, a liquid guide ring, an upper guide plate and a lower guide plate, the upper heating plates and the lower heating plates are both of an arc-shaped structure and are alternately installed on the surface of the valve pipe, and the liquid return rings are installed at the ends of the valve pipe and are connected with the upper heating plates and the lower heating plates correspondingly; the liquid guide ring is installed on the top of the valve pipe and arranged on the valve rod in a sleeving mode, and the two sides of the liquid guide ring are connected with the upper guide plate. The heating box is arranged below the valve pipe, the heating liquid circulates in the heating box and is heated, the heated liquid is led out through the pump machine, the heating mechanism is installed on the valve pipe, the heating liquid circulates in the heating mechanism, the temperature of the valve pipe, the valve element and the valve rod can be increased, and the problem that the valve is frozen in cold weather is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a leakage-proof natural gas antifreeze valve. Background Art

[0002] The natural gas valve is a safety device for gas pipeline projects. It is also an indispensable component in the West-East Gas Transmission Project, used to cut off and connect the gas in the natural gas pipeline.

[0003] The existing anti-leakage natural gas valve has poor cold resistance. In cold weather, the valve pipe, valve tube and valve core are prone to freezing and jamming due to low temperature, which affects the normal use of the valve. Therefore, an anti-leakage natural gas antifreeze valve is proposed. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a leakage-proof natural gas antifreeze valve, which solves the problem that the existing leakage-proof natural gas valves have poor cold resistance and are prone to freezing and jamming of valve pipes, valve tubes and valve cores due to low temperatures in cold weather, thus affecting the normal use of the valve.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a leak-proof natural gas antifreeze valve, comprising a valve pipe, a base, a heating box and a heating mechanism, characterized in that: the heating box is installed on the top of the base and below the valve pipe, and a valve stem is installed in the middle of the top surface of the valve pipe;

[0008] The heating mechanism is symmetrically installed on the valve tube, and the heating mechanism includes an upper heating plate, a lower heating plate, a liquid return ring, a liquid guide ring, an upper guide plate and a lower guide plate. The upper heating plate and the lower heating plate are both arc-shaped structures and are alternately installed on the surface of the valve tube. The liquid return ring is installed at the end of the valve tube and is respectively connected to the upper heating plate and the lower heating plate. The liquid guide ring is installed on the top of the valve tube and is sleeved on the valve stem, and the two sides of the liquid guide ring are respectively connected to the upper guide plate.

[0009] As a further preferred embodiment of the present invention, adjacent upper heating plates are connected by a liquid guide plate, and the upper heating plate close to the valve stem is connected to the upper guide plate.

[0010] As a further preferred embodiment of the utility model, adjacent lower heating plates are connected by a liquid guide plate, and the lower heating plate close to the valve stem is connected to the lower guide plate, a liquid return pipe is installed at the bottom of one lower guide plate, and a liquid outlet pipe is installed at the bottom of the other lower guide plate.

[0011] As a further preferred embodiment of the present invention, an upper connecting plate is arranged above the valve tube, and a lower connecting plate is arranged below the valve tube. Fixed plates are installed at the ends of the upper connecting plate and the lower connecting plate and are connected through the fixed plates. The upper connecting plate and the lower connecting plate constitute a protective mechanism and are located outside the heating mechanism.

[0012] As a further preferred embodiment of the utility model, a heating chamber is provided inside the heating box, the heating chamber is filled with heating liquid, a heating wire and a pump are also installed inside the heating chamber, and the liquid outlet end of the pump is connected to the liquid outlet pipe.

[0013] As a further preferred embodiment of the present invention, flanges are respectively installed at both ends of the valve pipe.

[0014] (III) Beneficial effects

[0015] The utility model provides a leakage-proof natural gas antifreeze valve, which has the following beneficial effects:

[0016] The utility model provides a heating box under the valve pipe, in which heating liquid flows and is heated, and then discharged through a pump after being heated; a heating mechanism is installed on the valve pipe, in which heating liquid flows, and the valve pipe, valve core and valve stem can be heated, thereby solving the problem of valve freezing in cold weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an external structural diagram of the anti-leakage natural gas antifreeze valve of the utility model;

[0018] Figure 2 This is the internal structure diagram of the anti-leakage natural gas antifreeze valve of the utility model;

[0019] Figure 3 This is a diagram of the internal structure of the heating box described in the utility model.

[0020] In the figure: 1. base; 2. heating box; 3. liquid return pipe; 4. lower guide plate; 5. liquid guide ring; 6. valve stem; 7. valve pipe; 8. upper guide plate; 9. upper connecting plate; 10. flange; 11. fixing plate; 12. liquid return ring; 13. liquid guide plate; 14. upper heating plate; 15. lower heating plate; 16. liquid outlet pipe; 17. heating wire; 18. heating chamber; 19. pump. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 The embodiment of the utility model provides a technical solution: a leakage-proof natural gas antifreeze valve, comprising a valve pipe 7, a base 1, a heating box 2 and a heating mechanism, the heating box 2 is installed on the top of the base 1 and is located below the valve pipe 7, and a valve stem 6 is installed in the middle of the top surface of the valve pipe 7; the heating mechanism is symmetrically installed on the valve pipe 7, the heating mechanism comprises an upper heating plate 14, a lower heating plate 15, a liquid return ring 12, a liquid guide ring 5, an upper guide plate 8 and a lower guide plate 4, the upper heating plate 14 and the lower heating plate 15 are both arc-shaped structures and are alternately installed on the surface of the valve pipe 7, the liquid return ring 12 is installed at the end of the valve pipe 7 and is respectively connected to the upper heating plate 14 and the lower heating plate 15, the liquid guide ring 5 is installed on the top of the valve pipe 7 and is sleeved on the valve stem 6, and the two sides of the liquid guide ring 5 are respectively connected to the upper guide plate 8, the heating mechanism can heat the valve pipe 7 and the valve stem 6, and the problem of valve freezing in cold weather can be avoided.

[0023] As a further improvement, adjacent upper heating plates 14 are connected by a liquid guide plate 13 , and the upper heating plate 14 close to the valve stem 6 is connected to the upper guide plate 8 , and heating liquid flows through the upper heating plate 14 to heat the surface of the valve tube 7 .

[0024] As a further improvement, adjacent lower heating plates 15 are connected by a liquid guide plate 13, and the lower heating plate 15 close to the valve stem 6 is connected to the lower guide plate 4, a return liquid pipe 3 is installed at the bottom of one of the lower guide plates 4, and a liquid outlet pipe 16 is installed at the bottom of the other lower guide plate 4, and heating liquid circulates in the lower heating plate 15 to heat the surface of the valve tube 7.

[0025] As a further improvement, an upper connecting plate 9 is provided above the valve tube 7, and a lower connecting plate is provided below the valve tube 7. Fixed plates 11 are installed at the ends of the upper connecting plate 9 and the lower connecting plate and are connected by the fixed plates 11. The upper connecting plate 9 and the lower connecting plate constitute a protection mechanism and are located outside the heating mechanism. The upper connecting plate 9 and the lower connecting plate protect the valve tube 7, the upper heating plate 14, the lower heating plate 15, and the liquid return ring 12, and can also improve the thermal insulation.

[0026] As a further improvement, a heating chamber 18 is provided inside the heating box 2, and the interior of the heating chamber 18 is filled with heating liquid. A heating wire 17 and a pump 19 are also installed inside the heating chamber 18. The liquid outlet end of the pump 19 is connected to the liquid outlet pipe 16. The heating wire 17 heats the heating liquid, which is then pumped out through the pump 19. After being pumped out by the pump 19, the liquid is introduced into the heating mechanism through a liquid storage tank and then discharged from the heating mechanism on the other side.

[0027] As a further improvement, flanges 10 are respectively installed at both ends of the valve pipe 7 .

[0028] Working principle: The heating liquid is heated by the electric heating wire 17. During the heating process, the heating liquid is continuously pumped out by the pump 19, introduced into the heating mechanism on one side through the liquid storage tank, and then led out to the heating mechanism on the other side through the lower guide plate 4, the liquid guide plate 13, the liquid return ring 12, and the liquid guide ring 5, and then returned to the heating box 2 through the liquid return pipe 3 for circulation.

[0029] The components of the utility model, 1, base; 2, heating box; 3, liquid return pipe; 4, lower guide plate; 5, liquid guide ring; 6, valve stem; 7, valve pipe; 8, upper guide plate; 9, upper connecting plate; 10, flange; 11, fixing plate; 12, liquid return ring; 13, liquid guide plate; 14, upper heating plate; 15, lower heating plate; 16, liquid outlet pipe; 17, heating wire; 18, heating chamber; 19, pump, are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. The problem to be solved is that the existing anti-leakage natural gas valve has poor cold resistance. In cold weather, due to the low temperature, the valve pipe 7, the valve pipe 7, and the valve core are prone to freezing and jamming, affecting the normal use of the valve. The utility model combines the above-mentioned components with each other. A heating box 2 is arranged below the valve pipe 7. A heating liquid circulates in the heating box 2 and heats the heating liquid. After heating, the heating liquid is discharged through a pump 19. A heating mechanism is installed on the valve pipe 7. A heating liquid circulates in the heating mechanism. The valve pipe 7, the valve core and the valve stem 6 can be heated, thereby solving the problem of valve freezing in cold weather.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A leak-proof natural gas antifreeze valve, comprising a valve pipe (7), a base (1), a heating box (2) and a heating mechanism, characterized in that: The heating box (2) is installed on the top of the base (1) and is located below the valve tube (7), and a valve stem (6) is installed in the middle of the top surface of the valve tube (7); The heating mechanism is symmetrically mounted on the valve tube (7), and comprises an upper heating plate (14), a lower heating plate (15), a liquid return ring (12), a liquid guide ring (5), an upper guide plate (8) and a lower guide plate (4); the upper heating plate (14) and the lower heating plate (15) are both arc-shaped structures and are alternately mounted on the surface of the valve tube (7); the liquid return ring (12) is mounted at the end of the valve tube (7) and is respectively connected to the upper heating plate (14) and the lower heating plate (15); the liquid guide ring (5) is mounted on the top of the valve tube (7) and is sleeved on the valve stem (6); and the two sides of the liquid guide ring (5) are respectively connected to the upper guide plate (8).

2. The anti-leakage natural gas antifreeze valve according to claim 1, characterized in that: Adjacent upper heating plates (14) are connected via a liquid guide plate (13), and the upper heating plate (14) close to the valve stem (6) is connected to the upper guide plate (8).

3. The anti-leakage natural gas antifreeze valve according to claim 1, characterized in that: Adjacent lower heating plates (15) are connected by a liquid guide plate (13), and the lower heating plate (15) close to the valve stem (6) is connected to the lower guide plate (4), a liquid return pipe (3) is installed at the bottom of one of the lower guide plates (4), and a liquid outlet pipe (16) is installed at the bottom of the other lower guide plate (4).

4. The anti-leakage natural gas antifreeze valve according to claim 1, characterized in that: An upper connecting plate (9) is arranged above the valve tube (7), and a lower connecting plate is arranged below the valve tube (7). Fixed plates (11) are installed at the ends of the upper connecting plate (9) and the lower connecting plate and are connected via the fixed plates (11). The upper connecting plate (9) and the lower connecting plate constitute a protection mechanism and are located outside the heating mechanism.

5. The anti-leakage natural gas antifreeze valve according to claim 1, characterized in that: The heating box (2) is provided with a heating chamber (18) inside, the heating chamber (18) is filled with heating liquid, and the heating chamber (18) is also installed with a heating wire (17) and a pump (19), and the liquid outlet end of the pump (19) is connected to the liquid outlet pipe (16).

6. The anti-leakage natural gas anti-freeze valve according to claim 1, characterized in that: Flanges (10) are respectively installed at both ends of the valve pipe (7).

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