A GVU valve box

Abstract

The utility model discloses a GVU valve box, GVU valve group is provided in valve box body, and valve box body includes left half box body and right half box body, and left half box body and right half box body are fixedly connected through bolt nut, and GVU valve group includes three way ball valve and self -operated pressure regulating valve, and the valve box body is installed with inlet pipe, outlet pipe and diffusion pipe, and self -operated pressure regulating valve is connected outlet pipe and connecting pipe respectively, and three way ball valve is connected inlet pipe, diffusion pipe and connecting pipe respectively. The GVU valve box of the utility model is convenient to install and overhaul, and simple structure can reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of marine gas supply technology, specifically to a GVU valve box. Background Technology

[0002] GVU valve boxes are equipment in marine gas supply systems, primarily used in conjunction with engines that use gaseous fuels, including natural gas, hydrogen, and ammonia. GVU valve boxes function as pressure regulators, filters, provide safety shut-off, and bypass vents. The structure of a GVU valve box mainly includes the valve body, valve assembly, and piping components. Chinese utility patent CN 215444246 U discloses a GVU valve box with a cylindrical upper and lower cylindrical structure, comprising an upper circular head and a lower circular barrel. The upper circular head and lower circular barrel are detachably fixed together by bolts. This GVU valve box has a small internal space and a deep lower circular barrel, requiring the valve assembly to be hoisted into the lower circular barrel from above during installation, leading to difficulties in installation and maintenance, and also resulting in a complex valve assembly structure. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the technical problem to be solved by this utility model is to provide a GVU valve box that is easy to install and maintain, has a simple structure, and can reduce costs.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A GVU valve box includes a valve box body, in which a GVU valve assembly is disposed. The valve box body includes a left half and a right half, which are fixedly connected by bolts and nuts. The GVU valve assembly includes a three-way ball valve and a self-regulating pressure regulating valve. An inlet pipe, an outlet pipe, and a vent pipe are installed on the valve box body. The self-regulating pressure regulating valve is connected to the outlet pipe and the connecting pipe, respectively. The three-way ball valve is connected to the inlet pipe, the vent pipe, and the connecting pipe, respectively.

[0006] Preferably, a first valve group and a second valve group are installed on the left half of the housing, the first valve group is fixedly connected to the air inlet pipe, and the second valve group is fixedly connected to the air outlet pipe.

[0007] Preferably, the connecting pipe passes through and extends out of the right half of the housing.

[0008] Preferably, the GVU valve box is equipped with a compressed air system for driving the three-way ball valve. The compressed air system includes a compressed air pipe and a junction box. The junction box provides compressed air at a given pressure. The compressed air pipe is connected to the junction box and the three-way ball valve respectively.

[0009] Preferably, the junction box is fixedly installed on the outside of the right half of the enclosure by a fixing bracket.

[0010] Preferably, the GVU valve assembly, the vent pipe, and the connecting pipe are respectively fixed to the right half of the housing using saddle clamps.

[0011] Preferably, both the left and right halves of the housing are provided with connecting flanges, and the bolts and nuts are fixedly installed at the connecting flanges.

[0012] Preferably, the connecting flange has a square structure.

[0013] Preferably, the valve box body is in the shape of a cuboid, and each vertex corner of the cuboid is a rounded arc.

[0014] The beneficial effects of this utility model after adopting the above technical solution are:

[0015] Since the valve box consists of a left half and a right half, which are fixedly connected by bolts and nuts, the left and right halves are easy to assemble and disassemble. Furthermore, the GVU valve assembly inside the valve box does not need to be hoisted into the valve box from above, making installation and maintenance simple and operation easy.

[0016] Because the valve box is shaped like a cuboid, it is made of steel plate through bending and welding, making manufacturing convenient and easy. Compared to the traditional cylindrical valve box, this significantly reduces costs. This is because a cylindrical valve box requires a circular end cap, which needs to be stamped, resulting in high costs and relatively high manufacturing difficulty. Furthermore, the dimensions of a circular end cap are equal in all directions, and its specifications depend on the diameter. In contrast, the cuboid shape of the valve box has no limit on its aspect ratio, allowing for greater freedom in size and internal layout.

[0017] Furthermore, the connecting flanges of the left and right halves of the box are square in shape and regular in shape, and can be directly welded from rectangular plates.

[0018] The valve housing contains a GVU valve assembly, which includes a three-way ball valve and a self-regulating pressure regulating valve. The valve housing is equipped with an inlet pipe, an outlet pipe, and a vent pipe. The self-regulating pressure regulating valve is connected to both the outlet pipe and the connecting pipe, while the three-way ball valve is connected to the inlet pipe, the vent pipe, and the connecting pipe. Therefore, the bypass venting and pressure reduction / stabilization functions of the GVU valve housing of this invention are mainly achieved through two valves and three connected pipes. The two valves are a three-way ball valve and a self-regulating pressure regulating valve, and the three pipes are the inlet pipe, the connecting pipe, and the outlet pipe. The structure is simple, easy to install, and significantly reduces costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the GVU valve box of this utility model;

[0020] Figure 2This is a three-dimensional structural schematic diagram of the GVU valve box of this utility model from another perspective;

[0021] Figure 3 This is a sectional view of the GVU valve box;

[0022] In the diagram: 1. Right half of the housing; 2. Left half of the housing; 3. Bolt; 4. Three-way ball valve; 5. Self-regulating pressure valve; 6. Inlet pipe; 7. Outlet pipe; 8. Vent pipe; 9. Connecting pipe; 21. First valve group; 22. Second valve group; 10. Compressed air pipe; 11. Junction box. Detailed Implementation

[0023] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of this utility model, but it is not intended to limit the scope of protection of the appended claims of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 this utility model.

[0025] Furthermore, although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used in this document do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0026] like Figures 1 to 3 The GVU valve box shown includes a valve box body, and a GVU valve assembly is installed inside the valve box body. The valve box body includes a left half box 2 and a right half box 1, which are fixedly connected by bolts 3 and nuts. The GVU valve assembly includes a three-way ball valve 4 and a self-regulating pressure regulating valve 5. An air inlet pipe 6, an air outlet pipe 7, and a vent pipe 8 are installed on the valve box body. The self-regulating pressure regulating valve 5 is connected to the air outlet pipe 7 and the connecting pipe 9, respectively. The three-way ball valve 4 is connected to the air inlet pipe 6, the vent pipe 8, and the connecting pipe 9, respectively.

[0027] Since the valve box body consists of a left half box 2 and a right half box 1, and the left half box 2 and the right half box 1 are fixedly connected by bolts 3 and nuts, the left half box 2 and the right half box 1 are easy to install and disassemble. Furthermore, the GVU valve assembly inside the valve box body does not need to be hoisted into the valve box body from above, making installation and maintenance simple and operation easy.

[0028] The normal operating path of the gaseous fuel is as follows: Inlet pipe 6 → Three-way ball valve 4 → Connecting pipe 9 → Pressure regulating valve → Outlet pipe 7.

[0029] When the engine is stopped, the path of the gaseous fuel is: intake pipe 6 → three-way ball valve 4 → vent pipe 8.

[0030] The aforementioned three-way ball valve 4 can also be replaced with a normally open shut-off valve and a normally closed shut-off valve to achieve the bypass venting function. The aforementioned self-operated pressure regulating valve 5 can be a self-operated pressure regulating valve that takes gas from the downstream end of the valve, or a differential pressure self-operated pressure regulating valve that takes gas from both the downstream end of the valve and the engine end simultaneously.

[0031] In some embodiments, the valve body is preferably shaped as a cuboid with rounded corners. This cuboid valve body is made of steel plate by bending and welding, which is convenient and has a low manufacturing threshold. Compared with the traditional cylindrical valve body, it greatly reduces costs. This is because the cylindrical valve body requires a circular end cap, which needs to be stamped, resulting in high costs and relatively high manufacturing difficulty. Furthermore, the dimensions of a circular end cap are equal in all directions, and its specifications depend on the diameter, while the cuboid shape of the valve body has no limit on the aspect ratio, allowing for greater freedom in size and internal layout.

[0032] In some embodiments, both the left half of the housing 2 and the right half of the housing 1 are provided with connecting flanges, and bolts 3 and nuts are fixedly installed at the connecting flanges. The connecting flanges are square in structure, regular in shape, and are directly welded from rectangular plates. The main function of the valve housing is to provide protection for the GVU valve assembly inside.

[0033] In some embodiments, a first valve assembly 21 and a second valve assembly 22 are installed on the left half of the housing 2. The first valve assembly 21 is fixedly connected to the air inlet pipe 6, and the second valve assembly 22 is fixedly connected to the air outlet pipe 7. The connecting pipe 9 passes through and extends out of the right half of the housing 1.

[0034] The GVU valve box is equipped with a compressed air system that drives the three-way ball valve 4. The compressed air system includes a compressed air pipe 10 and a junction box 11. The junction box 11 provides compressed air at a given pressure. The compressed air pipe 10 is connected to the junction box 11 and the three-way ball valve 4 respectively.

[0035] Junction box 11 is fixedly installed on the outside of the right half of the enclosure 1 by a fixed bracket.

[0036] The GVU valve assembly, vent pipe 8, and connecting pipe 9 are respectively fixed to the right half of the housing 1 by saddle clamps.

[0037] The bypass venting and pressure reduction / stabilization functions of the GVU valve box of this utility model are mainly achieved through two valves and three pipe connections. The two valves are a three-way ball valve 4 and a self-regulating pressure regulating valve 5, and the three pipes are the inlet pipe 6, the connecting pipe 9, and the outlet pipe 7. The structure is simple, easy to install, and greatly reduces costs.

[0038] The GVU valve box of this invention can be adapted to gaseous fuels such as natural gas, hydrogen, ammonia, and ethers.

[0039] The working principle of the GVU valve box of this utility model will be explained by comparing it with the use of natural gas as fuel:

[0040] Bypass venting function: Gas enters through intake pipe 6 and exits through exhaust pipe 7 when the engine is running; when the engine stops, residual gas in the pipe exits through vent pipe 8. Therefore, a three-way ball valve 4 is needed to reverse the gas flow, allowing it to exit through either exhaust pipe 7 or vent pipe 8.

[0041] Pressure reduction and stabilization: mainly achieved by the self-regulating pressure regulating valve 5.

[0042] This utility model is not limited to the above embodiments. All improvements made based on the concept, principle, structure and method of this utility model are within the protection scope of this utility model.

Claims

1. A GVU valve box, comprising a valve box body, wherein a GVU valve assembly is disposed within the valve box body, characterized in that: The valve housing includes a left half and a right half, which are fixedly connected by bolts and nuts. The GVU valve assembly includes a three-way ball valve and a self-regulating pressure regulating valve. An inlet pipe, an outlet pipe, and a vent pipe are installed on the valve housing. The self-regulating pressure regulating valve is connected to the outlet pipe and the connecting pipe, respectively. The three-way ball valve is connected to the inlet pipe, the vent pipe, and the connecting pipe, respectively.

2. The GVU valve box as described in claim 1, characterized in that: The left half of the housing is equipped with a first valve group and a second valve group. The first valve group is fixedly connected to the air inlet pipe, and the second valve group is fixedly connected to the air outlet pipe.

3. A GVU valve box as described in claim 2, characterized in that: The connecting pipe passes through and extends out of the right half of the box.

4. A GVU valve box as described in claim 3, characterized in that: The GVU valve box is equipped with a compressed air system that drives the three-way ball valve. The compressed air system includes a compressed air pipe and a junction box. The junction box provides compressed air at a given pressure. The compressed air pipe is connected to the junction box and the three-way ball valve respectively.

5. A GVU valve box as described in claim 4, characterized in that: The junction box is fixedly installed on the outside of the right half of the enclosure by a fixed bracket.

6. A GVU valve box as described in claim 4, characterized in that: The GVU valve assembly, the vent pipe, and the connecting pipe are respectively fixed to the right half of the housing by saddle clamps.

7. A GVU valve box as described in claim 1, characterized in that: Both the left and right halves of the housing are equipped with connecting flanges, and the bolts and nuts are fixedly installed at the connecting flanges.

8. A GVU valve box as described in claim 7, characterized in that: The connecting flange has a square structure.

9. A GVU valve box as described in any one of claims 1 to 8, characterized in that: The valve box is in the shape of a cuboid, and each vertex of the cuboid is a rounded corner.

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