Multifunctional nitrogen purging integrated module

Abstract

The embodiment of the utility model provides a multifunctional nitrogen purging integrated module. A plurality of hydraulic valves, a plurality of fluid channels and the like are integrated on the integrated block, so that the dual functions of methanol supply distribution and nitrogen purging are realized. The module is highly integrated, the occupied space is reduced, the number of components is reduced, the cost is reduced, the application range is wide, and the popularization significance is great.

Description

Technical Field

[0001] The present application relates to the technical field of ship fuel engines, and in particular to a multifunctional nitrogen purge integrated module. Background Art

[0002] In recent years, the dual-fuel propulsion technology of ships has been continuously developed and matured. Dual-fuel main engines have put forward higher requirements on the pressure fluctuation, temperature change and safety protection of the fuel supply system. Especially for methanol dual-fuel main engines, the configuration of exhaust and purge systems is an important guarantee for safety protection. In order to avoid the harm of fuel leakage to personnel, equipment, environment, etc., it is necessary to purge the relevant equipment and its pipelines with nitrogen. However, at this stage, the fuel supply distribution and nitrogen purge on most ships are two completely independent systems with relatively single functions, complex structures and large space occupation. Utility Model Content

[0003] In order to solve this problem, the utility model provides a multifunctional nitrogen purge integrated module, which integrates the nitrogen purge function and the methanol fuel supply and distribution function.

[0004] The present application embodiment provides a multifunctional nitrogen purge integrated module, comprising:

[0005] Manifold block, nitrogen inlet, first one-way valve, second one-way valve, adapter assembly, methanol inlet, methanol outlet, hydraulic oil inlet, hydraulic oil outlet, hydraulic oil return port, nitrogen outlet and accumulator interface;

[0006] The integrated block is used as a mounting carrier, and the hydraulic oil inlet, the hydraulic oil outlet, the hydraulic oil return port, the methanol inlet, the methanol outlet, the nitrogen inlet, the nitrogen outlet and the accumulator interface are arranged on the surface of the integrated block;

[0007] The manifold block is internally integrated with a main channel, a control channel, a process hole and a mounting hole. The main channel is connected to the methanol inlet, the methanol outlet, the nitrogen inlet and the nitrogen outlet, and is used for methanol and nitrogen passages. The control channel is connected to the hydraulic oil inlet, the hydraulic oil outlet and the hydraulic oil return port, and can be used for hydraulic oil passages. The mounting hole is arranged on one side of the manifold block, and is used for mounting and fixing the manifold block.

[0008] The first one-way valve is provided corresponding to the nitrogen inlet, and is used to prevent methanol from entering the nitrogen inlet during the methanol supply and distribution process;

[0009] The second one-way valve is provided corresponding to the nitrogen outlet, and is used to prevent methanol from entering the nitrogen outlet during the methanol supply and distribution process;

[0010] The adapter assembly is arranged at the main channel opening on the surface of the integrated block for sealing.

[0011] In some embodiments, the integrated block is further integrated with a process channel, and the process channel is a connecting channel opened to cooperate in forming the main channel and the control channel.

[0012] In some embodiments, it also includes: a threaded plug, which is arranged at the process channel at the opening of the surface of the integrated block for sealing.

[0013] In some embodiments, the accumulator interface is disposed adjacent to the methanol inlet.

[0014] In some embodiments, the number of methanol outlets includes two or more.

[0015] In some embodiments, the number of the methanol outlets is six.

[0016] In some embodiments, it also includes: a stop valve, which is set corresponding to the methanol channel and is used to control the switching state of the methanol channel.

[0017] In some embodiments, it also includes: a threaded ferrule joint, which is arranged at the nitrogen inlet, the hydraulic oil inlet, the hydraulic oil outlet and the hydraulic oil return port, and is used to connect external pipelines.

[0018] In some embodiments, the methanol inlet, the methanol outlet and / or the nitrogen outlet are connected with a double-walled tube.

[0019] In some embodiments, a nitrogen inlet cover plate is provided at the nitrogen inlet.

[0020] The utility model is a multifunctional nitrogen purge integrated module, which realizes the dual functions of methanol supply distribution and nitrogen purge by integrating multiple hydraulic valves and multiple fluid channels on the integrated block. The module is highly integrated, reduces the occupied space, reduces the number of components, reduces the cost, has a wide range of applications, and has great significance for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings illustrate generally, by way of example and not limitation, various embodiments discussed herein.

[0022] Figure 1 This is a schematic diagram of the main structure of a multifunctional nitrogen purge integrated module according to an embodiment of the present application;

[0023] Figure 2 For the corresponding Figure 1 A schematic diagram of the oblique structure of the multifunctional nitrogen purge integrated module of the embodiment;

[0024] Figure 3This is a perspective structural diagram of a multifunctional nitrogen purge integrated module according to another embodiment of the present application;

[0025] Figure 4 Schematic diagram of the adapter component structure. DETAILED DESCRIPTION

[0026] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0027] In the embodiments of the present application, it should be noted that, unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, it can be an electrical connection or a connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] It should be noted that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects, and do not represent a specific order for the objects. It is understandable that the specific order or sequence of "first\second\third" can be interchanged where permitted. It should be understood that the objects distinguished by "first\second\third" can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0029] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] Combine the following Figures 1 to 4 The embodiments of the present application are described in detail.

[0031] Figure 1 and Figure 2 The embodiment of the present application provides a multifunctional nitrogen purge integrated module. Figure 1 and Figure 2 As shown, including:

[0032] Manifold block 1, nitrogen inlet 2, first one-way valve 3, second one-way valve 5, adapter assembly 6, methanol inlet 16, methanol outlet 11, hydraulic oil inlet 12, hydraulic oil outlet 13, hydraulic oil return port 14, nitrogen outlet 7 and accumulator interface 15.

[0033] The integrated block 1 is used as an installation carrier, and a hydraulic oil inlet 12 , a hydraulic oil outlet 13 , a hydraulic oil return port 14 , a methanol inlet 16 , a methanol outlet 11 , a nitrogen inlet 2 , a nitrogen outlet 7 and an accumulator interface 15 are arranged on the surface of the integrated block 1 .

[0034] The integrated block 1 has a main channel, a control channel, a process hole and a mounting hole integrated therein. The main channel is connected to the methanol inlet 16, the methanol outlet 11, the nitrogen inlet 2 and the nitrogen outlet 7, and is used for the methanol and nitrogen passages. The control channel is connected to the hydraulic oil inlet 12, the hydraulic oil outlet 13 and the hydraulic oil return port 14, and can be used for the hydraulic oil passage. The mounting hole is arranged on one side of the integrated block 1 for installing and fixing the integrated block 1.

[0035] The manifold serves as the mounting carrier for each valve component, and various channels are integrated inside, including the main channel, control channel, process channel, and mounting hole. The main channel is the methanol fuel and nitrogen channel, and the control channel is the hydraulic oil channel, ensuring that the valve can be quickly opened and closed under the combined action of the hydraulic oil force and the cartridge valve spring force. The process channel is a connecting channel set to cooperate with the main channel and the control channel. The mounting hole is set on the back of the manifold for the installation and fixation of this device. The connection ports are set on other surfaces of the manifold except the back, including the hydraulic oil inlet, hydraulic oil outlet, oil return port, methanol inlet and outlet, nitrogen outlet and accumulator connection port. The accumulator connection port is set at the methanol inlet, which can effectively reduce the pressure fluctuation of methanol fuel during the supply and distribution process.

[0036] The first one-way valve 3 is provided corresponding to the nitrogen inlet 2 to prevent methanol from entering the nitrogen inlet 2 during the methanol supply and distribution process.

[0037] The second one-way valve 5 is provided corresponding to the nitrogen outlet 7 to prevent methanol from entering the nitrogen outlet 7 during the methanol supply and distribution process.

[0038] The adapter assembly 6 is arranged at the main channel opening on the surface of the integrated block 1 for sealing.

[0039] In some embodiments, the integrated block 1 is further integrated with a process channel, which is a connecting channel opened to cooperate with the main channel and the control channel. Here, the integrated block 1 can be made by a subtractive manufacturing process or an additive manufacturing process, and when the subtractive manufacturing process is used, a process channel will be generated.

[0040] In some embodiments, Figure 1 and Figure 2As shown, it also includes: a threaded plug 8, which is arranged at the process channel at the opening of the surface of the integrated block 1 for sealing.

[0041] In some embodiments, the accumulator interface 15 is disposed adjacent to the methanol inlet 16 .

[0042] In some embodiments, the number of the methanol outlets 11 includes two or more.

[0043] Figure 3 This is another embodiment of the present application, a multifunctional nitrogen purge integrated module. In some embodiments, Figure 3 As shown, the number of methanol outlets 11 is six.

[0044] In some embodiments, Figure 3 As shown, it also includes: a stop valve 4, which is set corresponding to the methanol channel and is used to control the switch state of the methanol channel.

[0045] In some embodiments, Figure 1 and Figure 2 As shown, it also includes: a threaded ferrule joint 9, which is arranged at the nitrogen inlet 2, the hydraulic oil inlet 12, the hydraulic oil outlet 13 and the hydraulic oil return port 14, and is used to connect external pipelines.

[0046] In some embodiments, Figure 3 As shown, the methanol inlet 16 , the methanol outlet 11 and / or the nitrogen outlet 7 are connected with a double-walled tube 71 .

[0047] In some embodiments, Figure 3 As shown, a nitrogen inlet cover plate 21 is provided at the nitrogen inlet 2 .

[0048] In some embodiments, a nitrogen filter is further provided at the nitrogen inlet 2 , and the nitrogen filter is provided between the nitrogen inlet cover plate 21 and the integrated block 1 , and the nitrogen inlet cover plate 21 can fix the nitrogen filter.

[0049] In some embodiments, the first one-way valve 3, the stop valve 4 and the second one-way valve 5 are composed of a cartridge valve and a two-position three-way solenoid valve. The cartridge valve includes a valve sleeve, a spring, a cover plate, a valve core and a sealing ring. The cartridge valve is connected to the two-position three-way solenoid valve through the cover plate and embedded in the manifold to achieve sealing. The opening and closing of the cartridge valve are driven by hydraulic oil, and the circulation of the hydraulic oil is controlled by the on-off state of the two-position three-way solenoid valve. The first cartridge valve and the first solenoid valve are combined as the first one-way valve, the second cartridge valve and the second solenoid valve are combined as the stop valve, and the third cartridge valve and the third solenoid valve are combined as the second one-way valve. The first one-way valve is placed between the nitrogen inlet and the methanol main passage to ensure that the fuel does not enter the nitrogen purge inlet passage during the methanol supply and distribution process. The stop valve is a methanol fuel control valve used to control the switch state of the fuel passage. The second one-way valve is close to the nitrogen outlet to ensure that the fuel does not enter the nitrogen outlet passage during the methanol supply and distribution process.

[0050] When the methanol supply and distribution process is in progress, the stop valve is open, and the other valves are in a closed state. The methanol fuel channel is in the form of one inlet and six outlets. After the methanol is imported, it passes through the stop valve and is divided into six paths, and enters three injection valves from both sides at the same time. The methanol inlet and outlet connecting pipelines are all double-walled pipes. The inner layer of the pipeline is used as a methanol flow pipeline, and the outer layer of the pipeline is filled with protective gas. When nitrogen purging is performed, the stop valve is closed and the other valves are in an open state. Nitrogen flows out of the nitrogen outlet through the filter, the first check valve, and the second check valve in turn. The nitrogen inlet connecting pipeline is in the form of a single-walled pipe, and the outlet pipeline is in the form of a double-walled pipe. Nitrogen comes from the nitrogen generator and enters the nitrogen purging device after pressurization, buffering, and pressure regulation. The nitrogen filter is placed at the entrance of this module and fixed by the nitrogen inlet cover. The filtration accuracy of the nitrogen filter is 10um, which can effectively filter particulate matter and impurities in the gas. A flange interface connected to the nitrogen pipeline is set on the nitrogen inlet cover.

[0051] like Figure 3 As shown, this module is equipped with 3 cartridge valves, of which the second and third cartridge valves are in the form of bottom inlet and side outlet, and the first cartridge valve is in the form of side inlet and bottom outlet. The benefit of adopting this design is that when methanol is supplied, methanol can be prevented from entering the two adjacent first and third cartridge valves. If the third cartridge valve adopts the form of side inlet and bottom outlet, when methanol is supplied, due to the high methanol supply pressure, the valve core of the third cartridge valve can be pushed downward, the valve opens, and methanol flows out from the nitrogen outlet. Therefore, the third cartridge valve mostly adopts the form of bottom inlet and side outlet. Since methanol is inevitably retained in the channel between the first cartridge valve and the third cartridge valve during the fuel supply process, when nitrogen purge is performed again, the remaining methanol can be blown out from the nitrogen outlet, and the mixed gas is discharged out of the machine and enters the methanol collection tank.

[0052] Figure 1and Figure 2 The methanol supply and distribution process of the scheme is controlled by a separate pneumatic valve outside the module, and adopts a one-in-one-out form, so the overall size is relatively small. Figure 3 The scheme is reduced in size, and the overall structure is simple and compact. It consists of: manifold, cartridge valve, two-position three-way solenoid valve, adapter assembly, ferrule joint, threaded plug, etc. The design concept of the manifold is basically the same as that of the manifold described in scheme 1, and the internal channel layout is slightly different. In scheme 2, the stop valve is removed and controlled separately by the valve outside the module. Figure 4 The structure of the adapter assembly 6 is shown. Figure 4 As shown, the adapter assembly 6 is composed of an adapter 61, a seal 63 and a fastening bolt 62. The main passage is well sealed and leak-free by end face sealing and side sealing. In scheme 2, the nitrogen inlet, hydraulic oil inlet and outlet, oil return port, etc. are all connected by threaded ferrule joints, and the methanol fuel inlet and outlet and nitrogen outlet are connected to double-walled pipes in the form of flange connection. The process holes on the surface of the integrated block are all reliably sealed with threaded plugs and sealing rings.

[0053] like Figure 3 The diagram shows a multifunctional nitrogen purge integrated module, one way for nitrogen purge and one way for methanol supply and distribution. When nitrogen purge is performed, the first one-way valve and the second one-way valve are in an open state, the stop valve is in a closed state, and the nitrogen is filtered by the nitrogen filter and flows out from the nitrogen outlet after passing through the main channel to execute the nitrogen purge procedure. When methanol is supplied, the first one-way valve and the second one-way valve are in a closed state, and the stop valve is in an open state. Methanol enters from the methanol inlet pipeline and passes through the stop valve, and is divided into six ways to flow out from the methanol outlet pipeline and enter the cylinder injection valve to execute the methanol supply procedure. The nitrogen purge and methanol supply processes are independent of each other and do not interfere with each other.

[0054] In this module, the cartridge valve cooperates with the two-position three-way solenoid valve to act as a stop valve and a one-way valve. When the first and third solenoid valves are energized, the working port is connected to the hydraulic oil inlet pipeline. Under the force of the hydraulic oil, the spring force is overcome to push the valve core to move, the cartridge valve is opened, the nitrogen main channel remains connected, and nitrogen purging can be performed. When the first and third solenoid valves are de-energized, the working port is connected to the hydraulic oil return pipeline. Under the action of the spring force, the valve core is reset, the first and third cartridge valves are in a closed state, and the nitrogen main channel is closed. At the same time, the second solenoid valve is energized, its working port is connected to the hydraulic oil inlet pipeline, and under the force of the hydraulic oil, the spring force is overcome to push the valve core to move, the second cartridge valve is opened, the methanol supply pipeline remains connected, and methanol fuel can be provided to the injection valve.

[0055] In order to ensure that the device has good sealing performance, adapter components are set on both sides of the main passage, and each cartridge valve is designed for leakage detection. A connecting pipeline is set between the leakage hole channel and the outer pipeline of the methanol double-wall pipe, and a one-way valve is set at the connecting pipeline. The outer pipelines of the methanol inlet and outlet double-wall pipes are kept connected. Once the methanol in the inner pipe leaks, the gas detector can detect and alarm.

[0056] like Figure 1 and Figure 2 The figure shows a multifunctional nitrogen purge integrated module. The opening and closing of methanol fuel supply and distribution is mainly controlled by the pneumatic valve outside the module. A methanol passage is set on the module, with one inlet and one outlet, and an accumulator is configured at the methanol inlet. When the methanol supply and distribution process is stopped, the first and second one-way valves are opened to execute the nitrogen purge process.

[0057] The technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A multifunctional nitrogen purge integrated module, characterized in that: include: Manifold block, nitrogen inlet, first one-way valve, second one-way valve, adapter assembly, methanol inlet, methanol outlet, hydraulic oil inlet, hydraulic oil outlet, hydraulic oil return port, nitrogen outlet and accumulator interface; The integrated block is used as a mounting carrier, and the hydraulic oil inlet, the hydraulic oil outlet, the hydraulic oil return port, the methanol inlet, the methanol outlet, the nitrogen inlet, the nitrogen outlet and the accumulator interface are arranged on the surface of the integrated block; The manifold block is internally integrated with a main channel, a control channel, a process hole and a mounting hole. The main channel is connected to the methanol inlet, the methanol outlet, the nitrogen inlet and the nitrogen outlet, and is used for methanol and nitrogen passages. The control channel is connected to the hydraulic oil inlet, the hydraulic oil outlet and the hydraulic oil return port, and can be used for hydraulic oil passages. The mounting hole is arranged on one side of the manifold block, and is used for mounting and fixing the manifold block. The first one-way valve is provided corresponding to the nitrogen inlet, and is used to prevent methanol from entering the nitrogen inlet during the methanol supply and distribution process; The second one-way valve is provided corresponding to the nitrogen outlet, and is used to prevent methanol from entering the nitrogen outlet during the methanol supply and distribution process; The adapter assembly is arranged at the main channel opening on the surface of the integrated block for sealing.

2. The multifunctional nitrogen purge integrated module according to claim 1, characterized in that: The integrated block is also integrated with a process channel, and the process channel is a connecting channel opened to cooperate with the main channel and the control channel to form.

3. The multifunctional nitrogen purge integrated module according to claim 2, characterized in that: Also includes: A threaded plug is arranged at the opening of the process channel on the surface of the integrated block for sealing.

4. The multifunctional nitrogen purge integrated module according to claim 1, characterized in that: The accumulator interface is arranged adjacent to the methanol inlet.

5. The multifunctional nitrogen purge integrated module according to claim 1, characterized in that: The number of methanol outlets includes two or more.

6. The multifunctional nitrogen purge integrated module according to claim 5, characterized in that: The number of methanol outlets is six.

7. The multifunctional nitrogen purge integrated module according to claim 1, characterized in that: Also includes: The stop valve corresponds to the methanol channel setting and is used to control the switch state of the methanol channel.

8. The multifunctional nitrogen purge integrated module according to claim 1, characterized in that: Also includes: A threaded ferrule joint is arranged at the nitrogen inlet, the hydraulic oil inlet, the hydraulic oil outlet and the hydraulic oil return port, and is used for connecting external pipelines.

9. The multifunctional nitrogen purge integrated module according to claim 1, characterized in that: The methanol inlet, the methanol outlet and / or the nitrogen outlet are connected with a double-walled tube.

10. The multifunctional nitrogen purge integrated module according to claim 1, characterized in that: A nitrogen inlet cover plate is arranged at the nitrogen inlet.

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