CN219529164U

CN219529164U - Novel GVU valve box

Info

Publication number: CN219529164U
Application number: CN202320742369.4U
Authority: CN
Inventors: 任志国; 李嘉宇; 吴卫东; 汪昊; 林晓辉; 龙辉; 曾彦斌; 姜金泽; 隆正西; 马传树
Original assignee: Houpu Clean Energy Group Marine Equipment Co ltd
Current assignee: Houpu Clean Energy Group Marine Equipment Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-08-15
Anticipated expiration: 2033-04-06

Abstract

The utility model relates to the technical field of ship gas supply, in particular to a novel GVA valve box, which comprises a valve box shell, a gas pipeline arranged in the valve box shell, a filter arranged on the gas pipeline, a shut-off valve, a three-way valve and a discharge pipeline, wherein the valve box shell is provided with a valve box cover; the cut-off valve is arranged on the gas pipeline and used for cutting off the gas supply in an emergency; the three-way valve is arranged on the gas pipeline and positioned behind the emergency cut-off valve; one end of the discharge pipeline is communicated with the three-way valve, and the other end of the discharge pipeline is communicated with the outside of the valve box shell. The utility model has the advantages that the shut-off valve is matched with the three-way valve, so that the fuel emission is less after the engine is stopped; and the filter is provided with the pressure display devices at the front and back, and the filter blocking condition can be known by observing the pressure difference of the pressure display devices, so that the filter can be maintained in time.

Description

Novel GVU valve box

Technical Field

The utility model relates to the field of ship gas supply, in particular to a novel GVU valve box.

Background

The GVGU valve box is equipment in an LNG fuel ship gas supply system, is arranged in front of a ship engine, is internally provided with a valve element and a pipeline device and is used for controlling the supply of natural gas fuel in the engine, when the engine is stopped, natural gas in a pipeline needs to be discharged in order to ensure safety, when the natural gas is discharged, the natural gas in the pipeline between an LNG supply system and the GVGU valve box is discharged by the existing GVGU valve box, the LNG supply system is arranged on a ship deck, and the GVGU valve box is arranged in the engine compartment, the distance is longer, and the connected pipeline is longer, so that the discharged natural gas quantity is larger; and the existing GVU valve box is inconvenient to judge whether the filter screen in the filter is blocked or not, so that the use is inconvenient.

Disclosure of Invention

The utility model aims to overcome the defects that after an engine is stopped, more fuel is discharged and the existing valve box is inconvenient to judge whether a filter screen in a filter is blocked or not in the prior art, and provides a novel GVU valve box.

The aim of the utility model is achieved by the following technical scheme: the novel GVA valve box comprises a valve box shell, a gas pipeline arranged in the valve box shell, a filter arranged on the gas pipeline, a shut-off valve, a three-way valve and a discharge pipeline; the cut-off valve is arranged on the gas pipeline and is used for cutting off gas supply; the three-way valve is arranged on the gas pipeline and is positioned behind the cut-off valve; one end of the discharge pipeline is communicated with the three-way valve, and the other end of the discharge pipeline is communicated with the outside of the valve box shell.

According to the GVGU valve box disclosed by the disclosure, the three-way valve is arranged behind the cut-off valve and is communicated with the outside of the valve box shell through the discharge pipeline, after the engine is stopped, the cut-off valve is closed, the three-way valve is controlled, the gas pipeline in the valve box shell is communicated with the outside of the valve box shell through the discharge pipeline, at the moment, the unburned natural gas between the gas pipeline in the valve box and the engine can be discharged, the natural gas in the pipeline between the LNG supply system and the GVGU valve box is not discharged, and the discharge amount of the natural gas is reduced.

In some embodiments, the filter is disposed on the gas line and after the three-way valve for filtering natural gas entering the engine; the two pressure display devices are respectively arranged on the gas pipeline and are respectively positioned in front of and behind the filter. By arranging two pressure display devices in front and behind the filter, the blocking condition of the filter screen in the filter can be known by observing the pressure difference of the two pressure display devices, so that the filter screen in the filter can be cleaned or replaced in time.

In some embodiments, the pressure display device is a pressure gauge.

In some embodiments, in order to facilitate knowing the condition of the filter in the valve box in the cab, it is necessary to transmit the signal of the filter in the valve box to the cab, and the specific scheme adopted is not limited only, so that optimization is performed and one of the possible choices is given: the gas pipeline is provided with pressure transmitters, and the two pressure transmitters are respectively positioned in front of and behind the filter. The pressure transmitter transmits pressure signals to a control panel of the cab so that a worker can know the condition of the filter in the cab.

In some embodiments, a valve is arranged at the connection part of the pressure display device and the gas pipeline. And a valve is arranged at the joint of the pressure display device and the gas pipeline, so that the pressure display device is convenient to overhaul or replace.

In some embodiments, a pressure regulating valve is provided on the gas line, the pressure regulating valve being located between the three-way valve and the filter. The pressure of the fuel gas is reduced to a pressure suitable for the engine by arranging a pressure regulating valve.

In some embodiments, to ensure that the valve housing is safe enough during use, various schemes may be used to enhance the safety of the valve housing, and the specific scheme used is not limited thereto, and one of the possible options is optimized and exemplified herein: the cut-off valve and the three-way valve are pneumatic valves. Because natural gas is a flammable gas, pneumatic valves are used to improve the safety of the valve box during use.

In some embodiments, the shut-off valve is connected with a first electromagnetic valve through a pneumatic pipeline, the three-way valve is connected with a second electromagnetic valve through a pneumatic pipeline, and the first electromagnetic valve and the second electromagnetic valve are externally connected with an air source. The electromagnetic valve is used for controlling the opening and closing of the pneumatic pipeline to indirectly control the cut-off valve and the three-way valve, so that the safety is improved.

In some embodiments, the first solenoid valve and the second solenoid valve are both disposed outside of a valve housing, the valve housing being externally provided with a first switch for controlling the first solenoid valve and a second switch for controlling the second solenoid valve. Through all setting up first solenoid valve and second solenoid valve outside the valve box casing, utilize the valve box casing to separate gas pipeline and solenoid valve, further promote the security.

In some embodiments, a drain valve is provided at the bottom of the valve housing. In the use process of the valve box, accumulated water can be possibly generated in the valve box shell, and the drain valve is arranged at the bottom of the valve box shell, so that the accumulated water in the valve box shell can be drained.

The utility model has the following advantages:

1. by arranging the cut-off valve and the three-way valve on the gas pipeline in the valve box, when the engine is stopped, the cut-off valve is closed, the three-way valve is controlled to communicate the gas pipeline with the discharge pipeline, and the unburned natural gas between the gas pipeline in the valve box and the engine can be only discharged, so that the natural gas in the pipeline between the LNG supply system and the GVGU valve box is not discharged, and the discharge amount of the natural gas is reduced.

2. Two pressure display devices are respectively arranged at two ends of the filter, the use condition of the filter screen in the filter can be judged by observing the pressure difference of the two pressure display devices, when the filter screen of the filter is blocked, the pressure difference of the pressure display devices is large, and the filter screen in the filter can be replaced or cleaned.

Drawings

FIG. 1 is a schematic view of the internal principles of a GVU valve box of the present utility model;

FIG. 2 is a schematic view of the outer structure of the GVU valve housing of the present utility model;

in the figure: 1. a valve box housing; 11. an upper housing; 111. lifting lugs; 12. a lower housing; 121. support legs; 21. a gas line; 22. a discharge line; 23. a pneumatic line; 3. a shut-off valve; 4. a three-way valve; 5. a filter; 6. a pressure display device; 61. a valve; 7. a pressure regulating valve; 8. a pressure transmitter; 91. a first electromagnetic valve; 911. a first switch; 92. a second electromagnetic valve; 921. a second switch; 10. a blow-down valve.

Detailed Description

For the purpose of making the technical solution and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

The present utility model will be further described with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following.

As shown in fig. 1-2, a novel GVU valve box comprises a valve box shell 1, a gas pipeline 21 arranged in the valve box shell 1, a filter 5 arranged on the gas pipeline 21, a shut-off valve 3, a three-way valve 4, a discharge pipeline 22, a filter 5 and a pressure display device 6; the cut-off valve 3 is arranged on the gas pipeline 21 and is used for cutting off gas supply; the three-way valve 4 is arranged on the gas pipeline 21 and is positioned behind the cut-off valve 3; one end of the discharge pipeline 22 is communicated with the three-way valve 4, and the other end is communicated with the outside of the valve box shell 1.

In this embodiment, the valve box includes casing 11 and lower casing 12, pass through flange joint between the upper and lower casing 12, be provided with a plurality of supporting legs 121 on the lower casing 12, the fixed of valve box of being convenient for, be provided with hoist and mount ear 111 on the upper casing 11, hoist and mount when casing 11 is dismantled and install to the convenience, the gas pipeline 21 and all valve members in the valve box are whole prefabricated in the outside in the back integral erection to valve box casing 1, can wholly tear out gas pipeline 21 and all valve members in the valve box during later maintenance, be convenient for maintain and installation.

In this embodiment, when the GVU valve box is in operation, fuel gas is fed from the LNG supply system to the GVU valve box, and then enters the engine through the GVU valve box to be combusted. When the engine is stopped, the cut-off valve 3 is closed, the three-way valve 4 is controlled to communicate the gas pipeline 21 with the discharge pipeline 22, so that unburned natural gas between the gas pipeline 21 in the valve box and the engine is only discharged, and natural gas in a pipeline between an LNG supply system on the deck and the GVU valve box in the engine compartment is not discharged, and natural gas discharge is reduced. The three-way valve 4 of the utility model can also communicate the gas pipeline 21 with the discharge pipeline 22 in case of emergency to discharge the natural gas in the gas pipeline 21 so as to improve the safety in case of emergency.

Preferably, the filter 5 is disposed on the gas line 21 and located after the three-way valve 4, for filtering the natural gas entering the engine; the two pressure display devices 6 are respectively arranged on the gas pipeline 21 and are respectively positioned in front of and behind the filter 5. Specifically, in the present embodiment, two pressure display devices 6 are respectively disposed at the beginning and the end of the gas line 21 in the valve box, and in other embodiments, two pressure display devices 6 may be disposed at both ends of the filter 5; the valve housing 1 is further provided with a mirror for observing the condition inside the valve housing. Through setting up pressure display device 6 around filter 5, the staff can be at the scene through the sight glass on the valve box observe two pressure display device 6, knows the pressure differential between two pressure display device 6, judges the service behavior of filter screen in filter 5, if the difference of two pressure display device 6 is too big, then indicate that filter screen in filter 5 is blockked up, needs in time to change or wash the filter screen.

Preferably, the gas pipeline 21 is provided with pressure transmitters 8, and the two pressure transmitters 8 are respectively positioned in front of and behind the filter 5. In this embodiment, two pressure transmitters 8 are respectively disposed adjacent to two pressure display devices 6, the pressure transmitters 8 can transmit pressure signals to a control panel of a ship cab, when the pressure difference between the two pressure transmitters 8 is greater than a set value, an alarm prompt will be triggered, and at this time, the filter screen in the filter 5 can be replaced or cleaned, and in other embodiments, the two pressure transmitters 8 can also be disposed at two ends of the filter 5.

Preferably, a valve 61 is arranged at the connection between the pressure display device 6 and the gas pipeline 21. In this embodiment, the valve 61 is also disposed at the connection between the pressure transmitter 8 and the gas pipeline 21, and when the pressure display device 6 or the pressure transmitter 8 needs to be replaced or maintained, the valve 61 is closed, so that the pressure display device 6 or the pressure transmitter 8 can be disassembled, and the maintenance is convenient.

Preferably, the gas line 21 is provided with a pressure regulating valve 7, and the pressure regulating valve 7 is located between the three-way valve 4 and the filter 5. Some LNG supply systems supply high pressure natural gas, and by providing a pressure regulating valve 7, the natural gas is depressurized to a pressure suitable for the engine to be used and then enters the engine for combustion.

Preferably, the shut-off valve 3 and the three-way valve 4 are pneumatic valves. Because natural gas is combustible gas, valve elements on the pipeline are not suitable to be electric valves, so that pneumatic valves are selected, the safety of the valve box is improved, and in other embodiments, explosion-proof electromagnetic valves are also selected for the cut-off valve 3 and the three-way valve 4.

Preferably, the cut-off valve 3 is connected with a first electromagnetic valve 91 through a pneumatic pipeline 23, the three-way valve 4 is connected with a second electromagnetic valve 92 through the pneumatic pipeline 23, and the first electromagnetic valve 91 and the second electromagnetic valve 92 are externally connected with an air source. In this embodiment, the first solenoid valve and the second solenoid valve 92 are both disposed outside the valve housing 1, and the solenoid valve and the internal pipeline are isolated by the valve housing 1, so that the safety is improved.

Preferably, the valve housing 1 is provided with a first switch 911 for controlling the first solenoid valve 91 and a second switch 921 for controlling the second solenoid valve 92, and the first switch 911 and the second switch 921 are used for controlling the first solenoid valve 91 and the second solenoid valve 92.

Preferably, the bottom of the valve box shell 1 is provided with a drain valve 10, accumulated water or other pollutants can be generated in the valve box shell 1 in the use process of the valve box, and accumulated water is conveniently discharged by arranging the drain valve 10 at the bottom of the valve box.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the disclosed technology. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technology of the present utility model fall within the protection scope of the present utility model.

Claims

1. The utility model provides a novel GVU valve box, includes valve box casing (1) and sets up in gas pipeline (21) in valve box casing (1) and set up in filter (5) on gas pipeline (21), its characterized in that still includes:

a shut-off valve (3) provided in the gas line (21) for shutting off the gas supply;

a three-way valve (4) provided on the gas line (21) and located after the shut-off valve (3);

and one end of the discharge pipeline (22) is communicated with the three-way valve (4), and the other end of the discharge pipeline (22) is communicated with the outside of the valve box shell (1).

2. The novel GVU valve box according to claim 1, wherein two pressure display devices (6) are arranged on the gas pipeline (21), and the two pressure display devices (6) are respectively located before and after the filter (5).

3. A new GVU valve box according to claim 2, characterized in that the pressure display device (6) is a pressure gauge.

4. The novel GVU valve box according to claim 1, wherein a pressure transmitter (8) is arranged on the gas pipeline (21), and the two pressure transmitters (8) are respectively located before and after the filter (5).

5. The novel GVU valve box according to claim 2, wherein a valve (61) is arranged at the connection part of the pressure display device (6) and the gas pipeline (21).

6. The novel GVU valve box according to claim 1, wherein the gas pipeline (21) is provided with a pressure regulating valve (7), and the pressure regulating valve (7) is located between the three-way valve (4) and the filter (5).

7. The novel GVU valve box according to claim 1, wherein the shut-off valve (3) and the three-way valve (4) are pneumatic valves.

8. The novel GVU valve box according to claim 7, wherein the cut-off valve (3) is connected with a first electromagnetic valve (91) through a pneumatic pipeline (23), the three-way valve (4) is connected with a second electromagnetic valve (92) through the pneumatic pipeline (23), and the first electromagnetic valve (91) and the second electromagnetic valve (92) are externally connected with an air source.

9. The novel GVU valve box according to claim 8, wherein the valve box housing (1) is externally provided with a first switch (911) for controlling the first solenoid valve (91) and a second switch (921) for controlling the second solenoid valve (92).

10. The novel GVU valve box according to claim 1, wherein a blow-down valve (10) is arranged at the bottom of the valve box housing (1).