Gas check valve elbow

Abstract

The utility model relates to the technical field of elbow, specifically relates to gas check valve elbow, including elbow body, the horizontal pipeline and vertical pipeline are fixedly connected with the elbow body both ends end respectively, check valve core, check valve core sets up in the elbow body, check valve core one end face with horizontal pipeline end face is opposite, end cover, the end cover is detachably installed in one side of the elbow body, the end cover is opposite and sets up check valve core other end, pin shaft, pin axle one end is connected with check valve core, pin axle other end is fixedly connected with end cover through screw, elastic part, the elastic part is sleeved in pin axle outside, and the elastic part both ends are opposite with check valve core, end cover end face respectively, the utility model can guide gas to flow according to the predetermined direction, reduce the possibility of gas backflow, and then reduce the possibility of equipment failure and gas leakage.

Description

Technical Field

[0001] This utility model relates to the field of elbow technology, specifically to a gas check valve elbow. Background Technology

[0002] Gas is a general term for gaseous fuels that can burn and release heat for use by urban residents and industrial enterprises. There are many types of gas, mainly including natural gas, manufactured gas, liquefied petroleum gas, biogas, and coal gas. Gas is usually transported through pipelines.

[0003] When components of natural gas, such as methane and carbon monoxide, reach certain concentrations in the air, they can cause poisoning and may even explode upon contact with an open flame. However, the gas pipelines in cities are becoming increasingly complex, and existing pipelines cannot guarantee that gas will flow in the intended direction, making them prone to backflow, which can lead to equipment malfunctions and gas leaks. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a gas check valve elbow to solve the problem that existing gas pipelines cannot guarantee the flow of gas in a predetermined direction, easily leading to gas backflow. This, in turn, causes equipment malfunctions and gas leaks.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A gas check valve elbow includes an elbow body with a horizontal pipe and a vertical pipe fixedly connected to its two ends, respectively; a check valve core disposed within the elbow body, with one end face abutting against the end face of the horizontal pipe; an end cap detachably mounted on one side of the elbow body, positioned opposite the other end of the check valve core; a pin with one end connected to the check valve core and the other end fixedly connected to the end cap by a screw; and an elastic element sleeved on the outside of the pin, with both ends abutting against the end faces of the check valve core and the end cap, respectively.

[0006] In this way, when the gas passes through the check valve core, the pressure applied to the check valve core decreases, and the elastic element rebounds elastically, pushing the check valve core to move. After moving a certain distance, the check valve core abuts against the end face of the horizontal pipe. Specifically, a shoulder-like structure is formed at the connection between the end face of the horizontal pipe and the elbow body. The end face of the check valve core abuts against the formed shoulder, preventing the gas from flowing back into the horizontal pipe. With this structure, the gas can be guided to flow in a predetermined direction, reducing the possibility of gas backflow, thereby reducing the possibility of equipment failure and gas leakage.

[0007] Furthermore, the size of the check valve core is adapted to the end face of the horizontal pipe, and the nominal pressure of the check valve core is 42 MPa, thereby maintaining the stability of the check valve core during the gas flow process and reducing the possibility of gas backflow.

[0008] Furthermore, multiple sealing rings are evenly arranged on the outer side of the end cap, and the sealing rings abut against the inner wall of the elbow body, thereby improving the sealing effect of the end cap and reducing the possibility of gas leakage from the end cap.

[0009] Furthermore, the effective length of the horizontal pipe is a multiple of the nominal diameter, thereby improving the stability of the fluid medium flow velocity.

[0010] Furthermore, both the horizontal and vertical pipes are fixedly installed with tongue and groove flanges at their ends, thereby enabling a stable connection between the horizontal and vertical pipes and improving the sealing performance of the connection.

[0011] Furthermore, both the elbow body and the end cap are made of aluminum alloy, and the surfaces of both the elbow body and the end cap are electrophoretically coated with acrylic resin, thereby improving the corrosion resistance of the elbow body.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. It can guide the gas to flow in a predetermined direction, reducing the possibility of gas backflow, thereby reducing the possibility of equipment failure and gas leakage; 2. It can improve the stability of fluid medium flow velocity; 3. It can improve the sealing performance and corrosion resistance of elbows. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural schematic diagram of an embodiment of the gas check valve elbow of this utility model; Figure 2 This is a right-side structural schematic diagram of an embodiment of the gas check valve elbow of this utility model; Reference numerals in the accompanying drawings: Elbow body 1, horizontal pipe 101, vertical pipe 102; Check valve core 2; End cap 3; Pin 4; Screw 5; Elastic component 6; Sealing ring 7; 8. Tongue and groove flange. Detailed Implementation

[0014] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0016] Example: like Figures 1-2 As shown, the gas check valve elbow of this utility model comprises an elbow body 1, with a horizontal pipe 101 and a vertical pipe 102 fixedly connected to both ends of the elbow body 1; a check valve core 2, which is disposed inside the elbow body 1, with one end face of the check valve core 2 abutting against the end face of the horizontal pipe 101; an end cap 3, which is detachably installed on one side of the elbow body 1, with the end cap 3 positioned opposite the other end of the check valve core 2; a pin 4, one end of which is connected to the check valve core 2, and the other end of which is fixedly connected to the end cap 3 by a screw 5; and an elastic element 6, which is sleeved on the outside of the pin 4, with both ends of the elastic element 6 abutting against the end faces of the check valve core 2 and the end cap 3, respectively.

[0017] In this way, when the gas pressure is sufficient, the gas can enter the elbow body 1 from the horizontal pipe 101, enter the vertical pipe 102 through the check valve core 2, and be discharged from the vertical pipe 102. During the gas flow, the gas applies pressure to the check valve core 2, pushing the check valve core 2 to slide along the pin 4, compressing the elastic element 6. The elastic element 6 undergoes elastic deformation. Specifically, the elastic element 6 is a compression spring, so the gas can pass through the check valve core 2. When the gas passes through the check valve core 2, the pressure applied to the check valve core 2 decreases, and the elastic element 6 rebounds elastically, pushing the check valve core 2 to move. After moving a certain distance, the check valve core 2 abuts against the end face of the horizontal pipe 101. Specifically, a shoulder-like structure is formed at the connection between the end face of the horizontal pipe 101 and the elbow body 1. The end face of the check valve core 2 abuts against the formed shoulder, preventing the gas from flowing back into the horizontal pipe 101. With this structure, the gas can be guided to flow in a predetermined direction, reducing the possibility of gas backflow, thereby reducing the possibility of equipment failure and gas leakage.

[0018] The size of the check valve core 2 is adapted to the end face of the horizontal pipe 101. The nominal pressure of the check valve core 2 is 42 MPa, which can maintain the stability of the check valve core 2 during the gas flow process and reduce the possibility of gas backflow.

[0019] Multiple sealing rings 7 are evenly arranged on the outer side of the end cap 2. The sealing rings 7 abut against the inner wall of the elbow body 1, thereby improving the sealing effect of the end cap 2 and reducing the possibility of gas leakage from the end cap 2.

[0020] The effective length of the horizontal pipe 101 is 5 times the nominal diameter, which improves the stability of the fluid medium flow velocity.

[0021] Both the horizontal pipe 101 and the vertical pipe 102 are fixedly installed with tongue and groove flanges 8, which can stably connect the horizontal pipe 101 and the vertical pipe 102 and improve the sealing performance of the connection between the horizontal pipe 101 and the vertical pipe 102.

[0022] Both the elbow body 1 and the end cap 3 are made of aluminum alloy. The surfaces of both the elbow body 1 and the end cap 3 are electrophoretically coated with acrylic resin, which can improve the corrosion resistance of the elbow body 1.

[0023] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A gas check valve elbow, characterized in that, include: Elbow body (1), with a horizontal pipe (101) and a vertical pipe (102) fixedly connected to both ends of the elbow body (1); Check valve core (2), the check valve core (2) is disposed inside the elbow body (1), and one end face of the check valve core (2) abuts against the end face of the horizontal pipe (101); End cap (3), which is detachably installed on one side of the elbow body (1), and the end cap (3) is set opposite the other end of the check valve core (2); A pin (4) is connected at one end to the check valve core (2), and the other end of the pin (4) is fixedly connected to the end cap (3) by a screw (5). The elastic element (6) is sleeved on the outside of the pin (4), and the two ends of the elastic element (6) abut against the end faces of the check valve core (2) and the end cover (3), respectively.

2. The gas check valve elbow as described in claim 1, characterized in that: The size of the check valve core (2) is adapted to the end face of the horizontal pipe (101), and the nominal pressure of the check valve core (2) is 42 MPa.

3. The gas check valve elbow as described in claim 1, characterized in that: Multiple sealing rings (7) are evenly arranged on the outer side of the end cap (3), and the sealing rings (7) abut against the inner wall of the elbow body (1).

4. The gas check valve elbow as described in claim 1, characterized in that: The effective length of the horizontal pipe (101) is 5 times the nominal diameter.

5. The gas check valve elbow as described in claim 1, characterized in that: The ends of the horizontal pipe (101) and the vertical pipe (102) are all fixedly installed with tongue and groove flanges (8).

6. The gas check valve elbow as described in claim 1, characterized in that: The elbow body (1) and end cap (3) are both made of aluminum alloy, and the surfaces of the elbow body (1) and end cap (3) are coated with acrylic resin by electrophoresis.

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