A novel irregular-shaped flow channel three-valve assembly

Abstract

This utility model belongs to the field of valve technology, specifically a novel irregular-shaped flow channel three-valve assembly, comprising three valve bodies. Each valve body has a first mounting hole, a second mounting hole, a third mounting hole, a first input hole, a first output hole, a second input hole, and a second output hole. The bottom surface of the first mounting hole has a first valve seat hole, a first flow channel, and a second flow channel. The bottom surface of the second mounting hole has a second valve seat hole, a third flow channel, and a fourth flow channel. The bottom of the third mounting hole has a third valve seat hole and a fifth flow channel. The bottom of the first input hole has a sixth flow channel, and the bottom of the second input hole has a seventh flow channel. The first flow channel communicates with the first output hole, the second flow channel communicates with the third valve seat hole, the third flow channel communicates with the second output hole, the fourth flow channel communicates with the fifth flow channel, the sixth flow channel communicates with the first valve seat hole, and the seventh flow channel communicates with the second valve seat hole. All flow channels within the three valve bodies are straight, reducing the difficulty of flow channel processing and resulting in smoother flow channels, thus reducing pressure loss of the fluid within the channels.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a novel irregular-shaped flow channel three-valve assembly. Background Technology

[0002] Differential pressure transmitters are the main instruments used in industrial fields to measure parameters such as differential pressure and liquid level. They contain sensitive sensing elements. In order to protect the sensing elements and prevent damage to them when instantaneous high pressure or high differential pressure occurs, a three-valve manifold is connected to the differential pressure transmitter.

[0003] A three-valve manifold typically consists of three valves: a high-pressure valve and a low-pressure valve, usually located on either side of the valve body, and a balancing valve located in the middle of the valve body. By controlling the opening and closing of these three valves, the corresponding fluid channels are controlled. The high-pressure and low-pressure valves are used to open or close the high-pressure and low-pressure measurement channels of the differential pressure transmitter, respectively, while the balancing valve is used to control the connection or disconnection between the high-pressure and low-pressure measurement channels.

[0004] The current three-valve manifold has a slanted hole structure for installing the balance valve. The internal flow channel design is relatively complex, which leads to complex flow channel processing and large flow channel pressure loss, resulting in inaccurate measurement results from the differential pressure transmitter.

[0005] To address the aforementioned problems, this utility model proposes a novel irregular-shaped flow channel three-valve assembly. Utility Model Content

[0006] This invention provides a novel irregular-shaped flow channel three-valve assembly, which reduces the processing difficulty of the internal flow channel of the three valve body, makes the flow channel smoother, reduces the pressure loss of the flow channel, and improves the measurement accuracy of the differential pressure transmitter.

[0007] This utility model provides the following technical solution:

[0008] A novel irregular-shaped flow channel three-valve assembly includes three valve bodies. Each valve body has a first mounting hole, a second mounting hole, and a third mounting hole, as well as a first input hole, a first output hole, a second input hole, and a second output hole. A first valve seat hole is located in the center of the bottom surface of the first mounting hole, a second valve seat hole is located in the bottom surface of the second mounting hole, and a third valve seat hole is located in the center of the bottom surface of the third mounting hole. The bottom surface of the first mounting hole communicates with both the first input hole and the third valve seat hole, and the bottom surface of the second mounting hole communicates with both the second input hole and the third valve seat hole. The first valve seat hole communicates with the first output hole, and the second valve seat hole communicates with the second output hole. A first shut-off valve is located within the first mounting hole, a second shut-off valve is located within the second mounting hole, and a balancing valve is located within the third mounting hole. A first valve cavity is provided between the first shut-off valve and the bottom surface of the first mounting hole, and the third valve seat hole... The stem of a stop valve mates with a first valve seat hole; a second stop valve has a second valve cavity between itself and the bottom surface of a second mounting hole, and the stem of the second stop valve mates with the second valve seat hole; a third valve cavity is provided between the balance valve and the bottom surface of a third mounting hole, and the stem of the balance valve mates with the third valve seat hole; the bottom surface of the first mounting hole is provided with a first flow channel and a second flow channel, the bottom surface of the second mounting hole is provided with a third flow channel and a fourth flow channel, the bottom surface of the third mounting hole is provided with a fifth flow channel, the bottom surface of the first input hole is provided with a sixth flow channel, the bottom surface of the second input hole is provided with a seventh flow channel, the first flow channel is connected to the first output hole, the second flow channel is connected to the third valve seat hole, the third flow channel is connected to the second output hole, the fourth flow channel is connected to the fifth flow channel, the sixth flow channel is connected to the first valve seat hole, and the seventh flow channel is connected to the second valve seat hole.

[0009] Furthermore, the three valve bodies have a cuboid cross-section. The first input hole and the second input hole are located on the rear side of the three valve bodies, the first output hole and the second output hole are located on the front side of the three valve bodies, and the third mounting hole is located on the top side of the three valve bodies. The connection between the top side of the three valve bodies and the left side is provided with a first milled plane, and the connection between the top side of the three valve bodies and the right side is provided with a second milled plane. The first milled plane is provided with a first mounting hole, and the second milled plane is provided with a second mounting hole.

[0010] Furthermore, the inclination angles of both the first milling plane and the second milling plane are 45°.

[0011] Furthermore, the first input hole and the second input hole are provided with wire connectors, and the first output hole and the second output hole are provided with adapter connectors.

[0012] Furthermore, the bottom side of the three valve body is also provided with threaded positioning holes.

[0013] Furthermore, the three valve bodies are provided with multiple locking holes, each containing a positioning pin. The locking holes are adjacent to the first mounting hole and the second mounting hole, and the multiple positioning pins abut against the side walls of the first shut-off valve and the second shut-off valve, respectively.

[0014] In this invention, the first, second, third, fourth, fifth, sixth, and seventh flow channels are all straight flow channels, which reduces the difficulty of flow channel processing and makes the flow channels smoother, thus reducing the pressure loss of the fluid in the flow channels. Attached Figure Description

[0015] Figure 1 A side view of a novel irregular-shaped flow channel three-valve assembly provided in this embodiment of the utility model;

[0016] Figure 2 A cross-sectional view of a novel irregular-shaped flow channel three-valve assembly provided in this embodiment of the utility model;

[0017] Figure 3 A front view of the three valve bodies in a novel irregular-shaped flow channel three-valve assembly provided in this embodiment of the utility model;

[0018] Figure 4 A rear view of the three valve bodies in a novel irregular-shaped flow channel three-valve assembly provided in an embodiment of this utility model;

[0019] Figure 5 This is a perspective structural diagram of the three valve bodies in a novel irregular-shaped flow channel three-valve group provided in an embodiment of this utility model.

[0020] Figure label:

[0021] 1. Three-valve body; 101. First mounting hole; 102. Second mounting hole; 103. Third mounting hole; 104. First flow channel; 105. Second flow channel; 106. Third flow channel; 107. Fourth flow channel; 108. Fifth flow channel; 109. First input hole; 1010. Second input hole; 1011. First output hole; 1012. Second output hole; 1013. First valve seat hole; 1014. Second valve seat hole; 1015. Third valve seat hole; 1016. Sixth flow channel; 1017. Seventh flow channel; 1018. Locking hole; 1019. First milled surface; 1020. Second milled surface; 1021. Threaded positioning hole; 2. First shut-off valve; 3. Second shut-off valve; 4. Balance valve; 5. First valve chamber; 6. Second valve chamber; 7. Third valve chamber; 8. Threaded connector; 9. Adapter union. Detailed Implementation

[0022] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to 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 the embodiments of this utility model.

[0024] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0025] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0027] Example:

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a novel irregular-shaped flow channel three-valve assembly includes three valve bodies 1. The three valve bodies 1 are provided with a first mounting hole 101, a second mounting hole 102, and a third mounting hole 103, as well as a first input hole 109, a first output hole 1011, a second input hole 1010, and a second output hole 1012. A first valve seat hole 1013 is provided in the center of the bottom surface of the first mounting hole 101, a second valve seat hole 1014 is provided in the bottom surface of the second mounting hole 102, and a third valve seat is provided in the center of the bottom surface of the third mounting hole 103. Hole 1015, the bottom surface of the first mounting hole 101 is connected to the bottom surface of the first input hole 109 and the third valve seat hole 1015 respectively, the bottom surface of the second mounting hole 102 is connected to the bottom surface of the second input hole 1010 and the third valve seat hole 1015 respectively; the first valve seat hole 1013 is connected to the first output hole 1011, the second valve seat hole 1014 is connected to the second output hole 1012, the first mounting hole 101 is equipped with a first shut-off valve 2, the second mounting hole 102 is equipped with a second shut-off valve 3, the first... A balancing valve 4 is installed inside the three mounting holes 103; a first valve chamber 5 is provided between the first shut-off valve 2 and the bottom surface of the first mounting hole 101, and the valve stem of the first shut-off valve 2 is matched with the first valve seat hole 1013; a second valve chamber 6 is provided between the second shut-off valve 3 and the bottom surface of the second mounting hole 102, and the valve stem of the second shut-off valve 3 is matched with the second valve seat hole 1014; a third valve chamber 7 is provided between the balancing valve 4 and the bottom surface of the third mounting hole 103, and the valve stem of the balancing valve 4 is matched with the third valve seat hole 1015. The bottom surface of the first mounting hole 101 is provided with a first flow channel 104 and a second flow channel 105, the bottom surface of the second mounting hole 102 is provided with a third flow channel 106 and a fourth flow channel 107, and the bottom surface of the third mounting hole 103 is provided with a fifth flow channel 108. The first flow channel 104 is connected to the first output hole 1011, the second flow channel 105 is connected to the third valve seat hole 1015, the third flow channel 106 is connected to the second output hole 1012, and the fourth flow channel 107 is connected to the fifth flow channel 108.

[0029] The first flow channel 104 and the second flow channel 105 are directly formed by drilling holes in the bottom surface of the first mounting hole 101; the third flow channel 106 and the fourth flow channel 107 are directly formed by drilling holes in the bottom surface of the second mounting hole 102; the fifth flow channel 108 is formed by drilling holes in the bottom surface of the third mounting hole 103; the sixth flow channel 1016 is directly formed by drilling holes in the bottom surface of the first input hole 109; and the seventh flow channel 1017 bracket is formed by drilling holes in the bottom surface of the second input hole 1010. This reduces the processing difficulty of the internal flow channels of the three valve body 1. The first flow channel 104 is directly formed by drilling holes in the bottom surface of the first input hole 109. The first mounting hole 101 and the first output hole 1011 are connected; the second flow channel 105 is connected to the first mounting hole 101 and the third valve seat hole 1015; the third flow channel 106 is connected to the second mounting hole 102 and the second output hole 1012; the fourth and fifth flow channels 108 are connected to the second mounting hole 102 and the third mounting hole 103; the sixth flow channel 1016 is connected to the first input hole 109 and the first valve seat hole 1013; and the seventh flow channel 1017 is connected to the second input hole 1010 and the second valve seat hole 1014.

[0030] After the fluid medium is input through the first input port 109, it passes through the sixth flow channel 1016 to reach the first valve seat port 1013. The first shut-off valve 2 can control the opening and closing of the first valve seat port 1013, thereby controlling the fluid medium to enter the first valve chamber 5. After entering the first valve chamber 5, the fluid medium enters the first flow channel 104 and flows out of the first output port 1011 of the three valve body 1. Similarly, after the fluid medium is input through the second input port 1010 on the other side, it passes through the seventh flow channel 1017 to reach the second valve seat port 1014. The second shut-off valve 3 can control the opening and closing of the second valve seat port 1014, thereby controlling the fluid medium to enter the first valve body 1. The fluid medium enters the second valve chamber 6 and then flows out of the third valve body 1 through the third flow channel 106 into the second output port 1012. If the balance valve 4 is opened, the fluid medium in the first valve chamber 5 enters the third valve seat port 1015 through the second flow channel 105, and then enters the third valve chamber 7 through the third valve seat port 1015. Meanwhile, the fluid medium in the second valve chamber 6 enters the third valve chamber 7 through the fourth flow channel 107 and the fifth flow channel 108, thus connecting the first valve chamber 5 and the second valve chamber 6. This achieves hydraulic balance of the fluid medium in the first valve chamber 5 and the second valve chamber 6, preventing damage to the detection element of the differential pressure transmitter.

[0031] The three-valve body 1 has a rectangular cross-section. The first input hole 109 and the second input hole 1010 are located on the rear side of the three-valve body 1. The first output hole 1011 and the second output hole 1012 are located on the front side of the three-valve body 1. The third mounting hole 103 is located on the top side of the three-valve body 1. The connection between the top side of the three-valve body 1 and the left side is provided with a first milled plane 1019, and the connection between the top side of the three-valve body 1 and the right side is provided with a second milled plane 1020. The first milled plane 1019 is provided with a first mounting hole 101, and the second milled plane 1020 is provided with a second mounting hole 102.

[0032] By setting a first milling plane 1019 and a second milling plane 1020 on the cuboid, a first mounting hole 101 is set on the first milling plane 1019, and a second mounting hole 102 is set on the second milling plane 1020. This facilitates drilling a first flow channel 104 and a second flow channel 105 on the bottom surface of the first mounting hole 101, so that the angle of the first flow channel 104 can meet the requirement of communicating with the first output hole 1011, and the angle of the second flow channel 105 can meet the requirement of communicating with the third valve seat hole 1015. This facilitates drilling a third flow channel 106 and a fourth flow channel 107 on the bottom surface of the second mounting hole 102, so that the angle of the third flow channel 106 can meet the requirement of communicating with the second output hole 1012, and the angle of the fourth flow channel 107 can meet the requirement of communicating with the fifth flow channel 108.

[0033] The inclination angles of the first milling plane 1019 and the second milling plane 1020 are both 45°.

[0034] The 45° angle can simultaneously satisfy the drilling angle of the first flow channel 104 and the second flow channel 105 in the first mounting hole 101, so that the first flow channel 104 is connected to the first output hole 1011 while the second flow channel 105 is connected to the third valve seat hole 1015; and the third flow channel 106 is connected to the second output hole 1012 while the fourth flow channel 107 is connected to the fifth flow channel 108.

[0035] The first input hole 109 and the second input hole 1010 are provided with a wire connector 8, and the first output hole 1011 and the second output hole 1012 are provided with a transition connector 9.

[0036] The threaded connector 8 allows for more precise installation distances, facilitating on-site piping; while the adapter 9 makes on-site installation of the three-valve body 1 more convenient and efficient.

[0037] The bottom side of the three-valve body 1 is also provided with a threaded positioning hole 1021.

[0038] The threaded positioning hole 1021 facilitates the installation and fixation of the three valve body 1 in the usage position, thereby fixing the three valve group and making it easy to position the three valve group during use, thus avoiding instability in the position of the three valve group during use.

[0039] The three valve body 1 is also provided with multiple locking holes 1018. The locking holes 1018 are provided with positioning pins. The locking holes 1018 are adjacent to the first mounting hole 101 and the second mounting hole 102. The multiple positioning pins abut against the side walls of the first shut-off valve 2 and the second shut-off valve 3 respectively.

[0040] A positioning pin is installed in the locking hole 1018, which abuts against the side wall of the first shut-off valve 2 and the second shut-off valve 3. This prevents the first shut-off valve 2 from rotating in the first mounting hole 101, thus preventing the valve stem of the first shut-off valve 2 from tightly fitting with the first valve seat hole 1013, and thus preventing the first valve seat hole 1013 from closing. Similarly, it prevents the second shut-off valve 3 from rotating in the second mounting hole 102, thus preventing the valve stem of the second shut-off valve 3 from tightly fitting with the second valve seat hole 1014, and thus preventing the second valve seat hole 1014 from closing. This affects the normal operation of the three-valve assembly.

[0041] A third mounting hole 103 is drilled on the top surface of the cuboid three-valve body 1. A first mounting hole 101 is drilled on the first milled plane 1019, and a second mounting hole 102 is drilled on the second milled plane 1020. A first output hole 1011 and a second output hole 1012 are drilled on the front side, and a first input hole 109 and a second input hole 1010 are drilled on the rear side. Then, a first flow channel 104, a second flow channel 105, and a first valve seat hole 1013 are drilled on the bottom surface of the first mounting hole 101; a third flow channel 104 is drilled on the bottom surface of the second mounting hole 102. 06 and the fourth flow channel 107 and the second valve seat hole 1014; drill the fifth flow channel 108 and the third valve seat hole 1015 on the bottom surface of the third mounting hole 103; drill the sixth flow channel 1016 on the bottom surface of the first input hole 109 and the seventh flow channel 1017 on the bottom surface of the second input hole 1010; drill the threaded positioning hole 1021 on the bottom surface of the three valve body 1; drill the retaining hole 1018 on the first milling plane 1019 at the position connected to the first mounting hole 101 and the position of the second milling plane 1020 adjacent to the second mounting hole 102.

[0042] In use, the first shut-off valve 2 is fixed in the first mounting hole 101, and a positioning pin is inserted into the locking hole 1018 on the first milled plane 1019 to prevent the first shut-off valve 2 from loosening; the second shut-off valve 3 is fixed in the second mounting hole 102, and a positioning pin is inserted into the locking hole 1018 on the second milled plane 1020 to prevent the second shut-off valve 3 from loosening; the balance valve 4 is fixed in the third mounting hole 103; a threaded connector 8 is provided in the first input hole 109 and the second input hole 1010, and an adapter 9 is provided in the first output hole 1011 and the second output hole 1012; the valve is fixed in the working position through the threaded positioning hole 1021, and the threaded connector 8 and the adapter 9 are used to fix the valve in place. The first valve (9) connects the three-valve assembly to the differential pressure transmitter. First, open the balancing valve (4), then open the first shut-off valve (2) and the second shut-off valve (3) to equalize the fluid pressure in the first valve chamber (5) and the second valve chamber (6). Then, slowly close the balancing valve (4) to prevent damage to the transmitter's sensing element caused by the sudden opening of the first and second shut-off valves (2 and 3) due to the pressure difference. Then, slowly close the balancing valve (4) again to allow the sensing element to gradually adapt to the pressure difference. After detection, slowly open the balancing valve (4) to equalize the pressure on both sides, then close the first and second shut-off valves (2 and 3), and finally close the balancing valve (4) again to prevent damage to the differential pressure transmitter due to a sudden pressure drop, thus stopping the transmitter's measurement operation. The first flow channel (104), second flow channel (105), third flow channel (106), fourth flow channel (107), fifth flow channel (108), sixth flow channel (1016), and seventh flow channel (1017) are all straight flow channels, reducing the difficulty of flow channel processing and making the flow channels smoother, thus reducing pressure loss of the fluid within the flow channels.

[0043] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A novel irregular-shaped flow channel three-valve assembly, characterized in that, The device includes a three-valve body, which has a first mounting hole, a second mounting hole, and a third mounting hole, as well as a first input hole, a first output hole, a second input hole, and a second output hole. A first valve seat hole is located in the center of the bottom surface of the first mounting hole, a second valve seat hole is located in the bottom surface of the second mounting hole, and a third valve seat hole is located in the center of the bottom surface of the third mounting hole. The bottom surface of the first mounting hole communicates with the first input hole and the third valve seat hole, respectively. The bottom surface of the second mounting hole communicates with the bottom surfaces of the second input hole and the third valve seat hole, respectively. The first valve seat hole communicates with the first output hole, and the second valve seat hole communicates with the second output hole. A first shut-off valve is located in the first mounting hole, a second shut-off valve is located in the second mounting hole, and a balancing valve is located in the third mounting hole. A first valve cavity is provided between the first shut-off valve and the bottom surface of the first mounting hole, and the valve of the first shut-off valve... The stem of the valve engages with the first valve seat hole; a second valve cavity is provided between the second shut-off valve and the bottom surface of the second mounting hole, and the valve stem of the second shut-off valve engages with the second valve seat hole; a third valve cavity is provided between the balance valve and the bottom surface of the third mounting hole, and the valve stem of the balance valve engages with the third valve seat hole; the bottom surface of the first mounting hole is provided with a first flow channel and a second flow channel, the bottom surface of the second mounting hole is provided with a third flow channel and a fourth flow channel, the bottom surface of the third mounting hole is provided with a fifth flow channel, the bottom surface of the first input hole is provided with a sixth flow channel, the bottom surface of the second input hole is provided with a seventh flow channel, the first flow channel is connected to the first output hole, the second flow channel is connected to the third valve seat hole, the third flow channel is connected to the second output hole, the fourth flow channel is connected to the fifth flow channel, the sixth flow channel is connected to the first valve seat hole, and the seventh flow channel is connected to the second valve seat hole.

2. The novel irregular-shaped flow channel three-valve assembly according to claim 1, characterized in that, The three valve bodies have a rectangular cross-section. The first input hole and the second input hole are located on the rear side of the three valve bodies, the first output hole and the second output hole are located on the front side of the three valve bodies, and the third mounting hole is located on the top side of the three valve bodies. The connection between the top side of the three valve bodies and the left side is provided with a first milled plane, and the connection between the top side of the three valve bodies and the right side is provided with a second milled plane. The first milled plane is provided with a first mounting hole, and the second milled plane is provided with a second mounting hole.

3. The novel irregular-shaped flow channel three-valve assembly according to claim 2, characterized in that, The inclination angles of the first milling plane and the second milling plane are both 45°.

4. The novel irregular-shaped flow channel three-valve assembly according to claim 1, characterized in that, The first input hole and the second input hole are provided with wire connectors, and the first output hole and the second output hole are provided with adapter connectors.

5. A novel irregular-shaped flow channel three-valve assembly according to claim 1, characterized in that, The bottom side of the three valve body is also provided with threaded positioning holes.

6. A novel irregular-shaped flow channel three-valve assembly according to claim 1, characterized in that, The three valve bodies are also provided with multiple locking holes, each containing a positioning pin. The locking holes are adjacent to the first mounting hole and the second mounting hole, and the multiple positioning pins abut against the side walls of the first shut-off valve and the second shut-off valve, respectively.

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