A breakaway valve with low flow resistance characteristics

Abstract

This utility model discloses a breakaway valve with low flow resistance characteristics, comprising: a first valve, a second valve fixedly connected to one end of the first valve, the first valve and the second valve including a transition chamber, a buffer chamber fixedly connected to the other end of the transition chamber, a large-diameter valve body fixedly connected to the other end of the buffer chamber, a support frame fixedly connected to the lower surface of the first valve, two fixed rods fixedly connected to the upper surface of the support frame, a side frame fixedly connected to the side surface of the support frame, a fixed plate fixedly connected to the front surface of the side frame, and two springs fixedly connected to the front surface of the fixed plate. Through the cooperation of the transition chamber, the buffer chamber, and the large-diameter valve body, the progressive flow diameter allows the valve inlet and outlet to gradually transition to the larger flow diameter inside the valve, avoiding flow interference caused by abrupt changes, reducing flow resistance, and the large-diameter design increases the channel diameter. The enlarged internal channel ensures that the fluid flows at a higher speed, further improving flow efficiency.

Description

Technical Field

[0001] This utility model relates to the field of breakaway valve technology, and in particular to a breakaway valve with low flow resistance characteristics. Background Technology

[0002] A breakaway valve is a device that can be broken into two sections under external force, and both sections have a self-sealing function after being broken. Placing a breakaway valve in a pipeline system containing fluid media can provide good protection for the pipeline system. However, the internal structure of existing breakaway valves increases the flow resistance of the fluid in the pipeline system, causing a sudden change in fluid volume and a large pressure loss when the fluid passes through the breakaway valve. For example, China has disclosed a "breakaway valve with low flow resistance characteristics" with the application number "CN201620961742.5". It increases the total volume of the upper and lower valve body cavities by increasing the inner diameter of the upper valve body cavity and the inner diameter of the lower valve body cavity. However, it cannot allow the valve inlet and outlet to gradually transition to the larger flow diameter inside the valve, thus failing to avoid the flow interference caused by the abrupt change, and therefore failing to reduce the turbulence of the fluid flow and optimize the flow path to reduce flow resistance. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a breakaway valve with low flow resistance characteristics. Through the cooperation of the transition chamber, buffer chamber, and large-diameter valve body, the progressive flow diameter allows the valve inlet and outlet to gradually transition to the larger flow diameter inside the valve, avoiding flow interference caused by abrupt changes. This can effectively reduce turbulence and separation of fluid flow, thereby optimizing the flow path and reducing flow resistance. Furthermore, the large-diameter design increases the channel diameter, and the enlarged internal channel ensures that the fluid can flow at a higher speed, further improving flow efficiency. Through the cooperation of the side frame, fixing plate, spring, and fixing block, excessive swing amplitude of one side of the valve body can be prevented during breakaway, avoiding mechanical damage caused by excessive swing and protecting the safety of the valve and pipeline system.

[0004] This utility model also provides a breakaway valve with the aforementioned low flow resistance characteristics, comprising: a first valve, a second valve fixedly connected to one end of the first valve, the first valve and the second valve including a transition chamber, a buffer chamber fixedly connected to the other end of the transition chamber, a large-diameter valve body fixedly connected to the other end of the buffer chamber, a support frame fixedly connected to the lower surface of the first valve, two fixing rods fixedly connected to the upper surface of the support frame, a side frame fixedly connected to the side surface of the support frame, a fixing plate fixedly connected to the front surface of the side frame, two springs fixedly connected to the front surface of the fixing plate, and a fixing rod fixedly connected to the other end of the two springs. The fixed block, through the cooperation of the transition chamber, buffer chamber, and large-diameter valve body, allows the valve inlet and outlet to gradually transition to the larger internal diameter, avoiding flow interference caused by abrupt changes. This effectively reduces fluid turbulence and separation, thereby optimizing the flow path and reducing flow resistance. The large-diameter design increases the channel diameter, and the enlarged internal channel ensures that the fluid can flow at a higher speed, further improving flow efficiency. Through the cooperation of the side frame, fixed plate, spring, and fixed block, excessive swing of one side of the valve body can be prevented during breakage, avoiding mechanical damage caused by excessive swing and protecting the safety of the valve and pipeline system.

[0005] According to the present invention, a pull-off valve with low flow resistance is provided, wherein the support frame is fixedly connected to the second valve, and the support frame is fixedly connected to the transition chamber of the first valve and the second valve.

[0006] According to the present invention, a pull-off valve with low flow resistance is provided, wherein the fixing rod is fixedly connected to the first valve, and the two fixing rods are respectively fixedly connected to the transition cavity and the large-diameter valve body on the first valve, which can ensure the stability of the first valve.

[0007] According to the present invention, a pull-off valve with low flow resistance is provided, wherein the fixing block is fixedly connected to the second valve, and the two fixing blocks are respectively fixedly connected to the transition cavity and the large-diameter valve body on the second valve, so as to better connect the second valve.

[0008] According to the present invention, a breakaway valve with low flow resistance is provided, wherein a flange is fixedly connected to the first valve and the second valve, and a sealing layer is provided on the flange, which can stably connect to the external pipeline and ensure sealing.

[0009] According to the present invention, a breakaway valve with low flow resistance is provided, wherein the buffer chamber is conical in shape, and the diameter of the large-diameter valve body is larger than that of the transition chamber, ensuring that the fluid can flow at a high speed.

[0010] According to the present invention, a breakaway valve with low flow resistance is provided, wherein the outlet of the first valve and the inlet of the second valve are sealed and connected by a breakaway bolt assembly arranged circumferentially along the flange edges that are interlocked with each other, and the transition cavity, buffer cavity and large-diameter valve body are provided with a fluorocarbon coating, which can reduce the coefficient of friction.

[0011] Beneficial effects

[0012] Compared with existing technologies, this breakaway valve with low flow resistance characteristics, through the cooperation of transition chamber, buffer chamber and large-diameter valve body, gradually transitions the valve inlet and outlet to the larger internal diameter, avoiding flow interference caused by abrupt changes. It can effectively reduce fluid flow turbulence and separation, thereby optimizing the flow path and reducing flow resistance. In addition, the large-diameter design increases the channel diameter and the enlargement of the internal channel ensures that the fluid can flow at a higher speed, further improving flow efficiency.

[0013] Compared with existing technologies, this breakaway valve with low flow resistance can prevent excessive swing of one side of the valve body during breakage by cooperating with the side frame, fixing plate, spring and fixing block, avoiding mechanical damage caused by excessive swing and protecting the safety of the valve and pipeline system. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a front view of the pull-off valve with low flow resistance characteristic of this utility model.

[0016] Figure 2 This is a rear view of the pull-off valve with low flow resistance of this utility model.

[0017] Figure 3 This is a side view of the pull-off valve with low flow resistance of this utility model.

[0018] Figure 4 This is a bottom view of the pull-off valve with low flow resistance of this utility model.

[0019] Legend:

[0020] 1. First valve; 2. Second valve; 3. Transition chamber; 4. Buffer chamber; 5. Large-diameter valve body; 6. Support frame; 7. Fixing rod; 8. Side frame; 9. Fixing plate; 10. Spring; 11. Fixing block; 12. Flange. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model discloses a breakaway valve with low flow resistance, comprising: a first valve 1, one end of which is fixedly connected to a second valve 2. The first valve 1 and second valve 2 are existing devices and will not be described in detail here. The valve includes: a valve body, a valve disc system, and a sealing interface. The outlet of the first valve 1 and the inlet of the second valve 2 are sealed together by a breakaway bolt assembly arranged circumferentially along their interlocking flange edges. A flange 12 is fixedly connected to the first valve 1 and the second valve 2, and a sealing layer is provided on the flange 12. The first valve 1 and the second valve 2 include a transition cavity 3 for... To provide a smooth flow path for the fluid and reduce abrupt changes in flow direction, a buffer chamber 4 is fixedly connected to the other end of the transition chamber 3. The buffer chamber 4 has a progressive diameter, which gradually transitions the valve inlet and outlet to the larger diameter inside the valve, avoiding flow interference caused by abrupt changes. The buffer chamber 4 is conical in shape, and a large-diameter valve body 5 is fixedly connected to the other end of the buffer chamber 4. The internal flow passage of the valve is relatively large, which can reduce the resistance to fluid flow. The diameter of the large-diameter valve body 5 is larger than that of the transition chamber 3. Fluorocarbon coatings are provided inside the transition chamber 3, the buffer chamber 4, and the large-diameter valve body 5.

[0023] Specifically, the first valve 1 and the second valve 2 are sealed together by a series of breakable bolt assemblies arranged circumferentially along their interlocking flange edges. The fluid first flows through the transition chamber 3, through which it enters and exits the valve, making the fluid flow more smoothly when entering and exiting the first valve 1 and the second valve 2. Then the fluid passes through the buffer chamber 4, through which the inlet and outlet of the valve gradually transition to the larger diameter of the large-diameter valve body 5, and then flows into the large-diameter valve body 5. Since the internal flow passage of the large-diameter valve body 5 is relatively large, the resistance to fluid flow is reduced.

[0024] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A support frame 6 is fixedly connected to the lower surface of the first valve 1. The support frame 6 is fixedly connected to the second valve 2. The support frame 6 is fixedly connected to the transition cavity 3 of the first valve 1 and the second valve 2. Two fixing rods 7 are fixedly connected to the upper surface of the support frame 6. The fixing rods 7 are fixedly connected to the first valve 1. The two fixing rods 7 are fixedly connected to the transition cavity 3 and the large-diameter valve body 5 on the first valve 1, respectively. A side frame 8 is fixedly connected to the side surface of the support frame 6. A fixing plate 9 is fixedly connected to the front surface of the side frame 8. Two springs 10 are fixedly connected to the front surface of the fixing plate 9. The other end of the two springs 10 is fixedly connected to a fixing block 11. The fixing block 11 is fixedly connected to the second valve 2. The two fixing blocks 11 are fixedly connected to the transition cavity 3 and the large-diameter valve body 5 on the second valve 2, respectively.

[0025] Specifically, when the first valve 1 and the second valve 2 are broken, the first valve 1 is kept in a stable position by the fixing rod 7, and the second valve 2 is connected by the side frame 8. Due to the elasticity of the side frame 8, the second valve 2 can swing freely to a certain extent when it is broken, and the swing amplitude of the second valve 2 is reduced by the restriction of the side frame 8.

[0026] Working principle: When the fluid flows through the first valve 1 and the second valve 2, it first flows through the transition chamber 3. The transition chamber 3 allows the fluid to enter and leave the first valve 1 and the second valve 2. Then it flows through the buffer chamber 4. The buffer chamber 4 allows the valve inlet and outlet to gradually transition to the larger diameter of the large-diameter valve body 5. Then it flows into the large-diameter valve body 5. The flow passage inside the large-diameter valve body 5 is relatively large. When the first valve 1 and the second valve 2 break, the fixed rod 7 keeps the position of the first valve 1 stable, and the side frame 8 reduces the swing amplitude when the second valve 2 breaks.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pull-apart valve having low flow resistance characteristics, characterized in that include: A first valve (1) is fixedly connected to a second valve (2) at one end. The first valve (1) and the second valve (2) include a transition chamber (3). A buffer chamber (4) is fixedly connected to the other end of the transition chamber (3). A large-diameter valve body (5) is fixedly connected to the other end of the buffer chamber (4). A support frame (6) is fixedly connected to the lower surface of the first valve (1). Two fixing rods (7) are fixedly connected to the upper surface of the support frame (6). A side frame (8) is fixedly connected to the side surface of the support frame (6). A fixing plate (9) is fixedly connected to the front surface of the side frame (8). Two springs (10) are fixedly connected to the front surface of the fixing plate (9). A fixing block (11) is fixedly connected to the other end of the two springs (10).

2. A pull-apart valve with low flow resistance characteristics according to claim 1, characterized in that The support frame (6) is fixedly connected to the second valve (2), and the support frame (6) is fixedly connected to the transition chamber (3) of the first valve (1) and the second valve (2).

3. The pull-apart valve with low flow resistance characteristics according to claim 1, characterized in that The fixing rod (7) is fixedly connected to the first valve (1), and the two fixing rods (7) are respectively fixedly connected to the transition cavity (3) and the large-diameter valve body (5) on the first valve (1).

4. The pull-apart valve with low flow resistance characteristics according to claim 1, characterized in that The fixing block (11) is fixedly connected to the second valve (2), and the two fixing blocks (11) are respectively fixedly connected to the transition chamber (3) and the large-diameter valve body (5) on the second valve (2).

5. A breakaway valve with low flow resistance as described in claim 1, characterized in that, The first valve (1) and the second valve (2) are fixedly connected to flanges (12), and the flanges (12) are provided with sealing layers.

6. A breakaway valve with low flow resistance characteristics according to claim 1, characterized in that, The buffer chamber (4) is conical in shape, and the diameter of the large-diameter valve body (5) is larger than that of the transition chamber (3).

7. A breakaway valve with low flow resistance characteristics according to claim 1, characterized in that, The outlet of the first valve (1) and the inlet of the second valve (2) are sealed and connected by a breakable bolt assembly arranged circumferentially along the flange edge that fits into each other. The transition cavity (3), the buffer cavity (4), and the large-diameter valve body (5) are provided with a fluorocarbon coating.

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