Dual fuel switching valve and dual fuel supply system

Abstract

The present application provides a dual-fuel conversion valve and a dual-fuel supply system, which belong to the technical field of fuel conversion valves. The dual-fuel conversion valve includes a valve body, a first valve core assembly, a second valve core assembly and a drive assembly. The valve body has a first channel and a second channel that are independent of each other. The first valve core assembly is configured to open or close the first channel. The second valve core assembly is configured to open or close the second channel. The drive assembly includes a power unit and a transmission unit that are configured to be arranged on both sides of the control panel, the power unit is connected to the transmission unit, and the transmission unit is connected to the first valve core assembly and the second valve core assembly. The power unit drives the transmission unit to switch the valve body between a first working state and a second working state. When the valve body is in the first working state, the first channel is opened and the second channel is closed. When the valve body is in the second working state, the first channel is closed and the second channel is opened. The dual-fuel conversion valve in this dual-fuel supply system is more convenient to use, and it is convenient to switch the supply of fuel through the power unit.

Description

Technical Field

[0001] The present application relates to the technical field of fuel conversion valves, and in particular to a dual-fuel conversion valve and a dual-fuel supply system. Background Art

[0002] A dual-fuel engine is an engine that can use dual fuels (or multiple fuels), which can adapt to both gasoline fuel and light hydrocarbon fuel (natural gas, liquefied gas, methanol, etc.). In this way, a gas-oil dual-fuel engine has two functional components for fuel conversion - a gas-oil dual-fuel conversion valve. Existing dual-fuel conversion valves are usually placed on the engine mounting frame or other mechanical parts. When it is necessary to switch the fuel, it is inconvenient to control the conversion valve to switch the fuel. Summary of the invention

[0003] The purpose of the present application is to provide a dual-fuel switching valve and a dual-fuel supply system, which can avoid fuel mixing and are easy to operate.

[0004] In a first aspect, an embodiment of the present application provides a dual-fuel conversion valve, comprising a valve body, a first valve core assembly, a second valve core assembly and a drive assembly. The valve body has a first channel and a second channel that are independent of each other. The first valve core assembly is configured to open or close the first channel. The second valve core assembly is configured to open or close the second channel. The drive assembly includes a power unit and a transmission unit that are configured to be arranged on both sides of the control panel, the power unit is connected to the transmission unit, and the transmission unit is transmission-connected to the first valve core assembly and the second valve core assembly. The power unit drives the transmission unit to switch the valve body between a first working state and a second working state; when the valve body is in the first working state, the first channel is opened and the second channel is closed. When the valve body is in the second working state, the first channel is closed and the second channel is opened.

[0005] Since the first channel and the second channel are independently arranged, after the valve body switches between the first working state and the second working state for many times, the problem of the first channel and the second channel being connected will not occur, which can avoid the mixing of fuels and affect the working condition of the fuel mixer, making the use of the dual-fuel conversion valve more convenient. The power unit and the transmission part are arranged on both sides of the control panel. When it is necessary to switch the working state of the valve body, the power unit on one side of the control panel can be rotated to control the transmission part to switch the valve body from the first working state to the second working state or from the second working state to the first working state. The first channel or the second channel can be controlled to be connected, so as to supply different fuels to the dual-fuel mixer, so as to achieve the purpose of switching the fuel supplied to the dual-fuel mixer. The power unit is arranged on one side of the control panel, and the transmission unit is arranged on the other side of the control panel, so that the operation of the power unit is more convenient.

[0006] In a possible implementation, it further includes a cover plate configured to be installed on the control panel, the cover plate is installed on the valve body, the power unit is located on one side of the cover plate, and the transmission unit and the valve body are located on the other side of the cover plate.

[0007] The cover plate is arranged so that the dual fuel conversion valve can be easily installed on the control panel, so that the power unit can be operated on one side of the control panel, and the valve body can be installed on the other side of the control panel for user operation.

[0008] In a possible implementation, the valve body includes a valve plate and a valve body, the valve body has a first channel and a second channel, the valve body is arranged on one side of the valve plate, the valve plate cover is equipped with a cover plate and forms a cavity with the cover plate, and the transmission part is located in the cavity.

[0009] The transmission part is installed in the cavity formed by the valve plate and the cover plate, so that the control of the first valve core assembly and the second valve core assembly is more convenient, and the transmission of the transmission part is prevented from being affected by other components, and the transmission is more stable.

[0010] In a possible embodiment, the power part is a rotating part, and the transmission part includes a driving shaft, a transmission part and a driven shaft. The first end of the driving shaft passes through the cover plate and is connected to the rotating part, and the second end passes through the valve plate and is connected to the first valve core assembly. The driving shaft and the driven shaft are connected through the transmission part, and the driving end of the driven shaft passes through the valve plate and is connected to the second valve core assembly.

[0011] Rotating the rotating part drives the active shaft connected to the rotating part to rotate, and the active shaft can control the movement of the first valve core assembly. The active shaft rotates, and the transmission part connected to the active part transmits the transmission, so that the driven shaft rotates, and the driven shaft can control the movement of the second valve core assembly, thereby switching the state of the valve body, so that the valve body switches between the first working state and the second working state.

[0012] In a possible implementation manner, the transmission member includes a driving gear and a driven gear, the driving gear is sleeved outside the driving shaft, and the driven gear is sleeved outside the driven shaft.

[0013] The driving shaft rotates, the driving gear sleeved outside the driving shaft rotates, the driving gear meshes with the driven gear, the driven gear rotates, and the driven shaft sleeved inside the driven gear rotates, thereby realizing transmission between the driving shaft and the driven shaft.

[0014] In a possible implementation, the first valve core assembly includes a first ball core having a first through hole, the first ball core is disposed in the first channel, and the second end of the active shaft is clamped in the first ball core. The second valve core assembly includes a second ball core having a second through hole, the second ball core is disposed in the second channel, the driving end of the driven shaft is clamped in the second ball core, and the axis of the first through hole is perpendicular to the axis of the second through hole.

[0015] The first ball core is controlled to rotate in the first channel by the active shaft, so that the first through hole is consistent with the first channel, and the first channel is connected; or the first through hole and the first channel are crossed, and the first channel is closed. The second ball core is controlled to rotate in the second channel by the driven shaft, so that the second through hole is consistent with the second channel, and the second channel is connected; or the second through hole and the second channel are crossed, and the second channel is closed. Since the axis of the first through hole is perpendicular to the axis of the second through hole, when the first channel is closed, the second channel is connected, and when the second channel is closed, the first channel is connected, so that the valve body can be switched between the first working state and the second working state.

[0016] In a possible implementation, the dual fuel conversion valve further includes a travel switch that cooperates with the transmission part. When the valve body is in the first working state, the transmission part is separated from the travel switch, and the first fuel channel switch of the first channel is opened; when the valve body is in the second working state, the transmission part touches the travel switch, and the second fuel channel switch of the second channel is opened.

[0017] By setting the travel switch, it is possible to further control whether the fuel enters the first channel or the second channel, and to control the conduction and disconnection of the fuel in the first channel or the second channel for a second time, making the control of the fuel valve more precise and improving the safety performance.

[0018] In a possible implementation, the driving gear or the driven gear of the transmission part is a sector tooth, and the sector tooth has a first end tooth and a second end tooth. When the valve body is in the first working state, the first end tooth is disengaged from the travel switch; when the valve body is in the second working state, the first end tooth touches the travel switch.

[0019] During the rotation of the gear, the switch path of the travel switch can be controlled at the same time, so that through the switching of the valve core component and the control of the travel switch, the working state of the valve body can be controlled at the same time to improve the safety performance.

[0020] In a second aspect, an embodiment of the present application provides a dual-fuel supply system, including a control panel and a dual-fuel conversion valve, wherein a power part and a transmission part are arranged on both sides of the control panel.

[0021] In order to facilitate the operation when the valve body of the dual fuel conversion valve is installed on one side of the control panel and the power unit is installed on the other side of the control panel, the installation of the fuel pipeline will not be affected.

[0022] In a possible implementation, the control panel is installed in the control room, the power unit is configured to be installed in the control room, and the transmission unit is configured to be installed outside the control room.

[0023] The power unit can be operated in the control room, and there is no need to open the mechanical room where the dual-fuel conversion valve is installed to control the power unit, which facilitates the switching of fuel passages. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, without paying any creative work, other related drawings can be obtained based on these drawings and they also belong to the protection scope of the present application.

[0025] Figure 1 A schematic diagram of the structure of a dual fuel conversion valve provided in an embodiment of the present application;

[0026] Figure 2 An exploded view of a dual fuel conversion valve provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the installation structure of the transmission part in the dual-fuel conversion valve provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the rotation of a rotating member in a dual fuel conversion valve provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the connection structure of the first ball core in the dual fuel conversion valve provided in an embodiment of the present application;

[0030] Figure 6 A connection diagram of a dual fuel supply system provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of a first connection structure between a transmission part and a travel switch provided in an embodiment of the present application;

[0032] Figure 8 A schematic diagram of a second connection structure between a transmission part and a travel switch provided in an embodiment of the present application.

[0033] Icons: 110-valve body; 120-first valve core assembly; 130-second valve core assembly; 140-driving assembly; 150-cover plate; 111-valve body; 112-valve plate; 113-cavity; 1111-first channel; 1112-second channel; 1113-first gas joint; 1114-second gas joint; 1115-first oil joint; 1116-second oil joint; 121-first ball core; 122-first sealing ring; 123-second sealing ring; 124 -first filter screen; 125-third sealing ring; 1117-filter plug; 1211-first through hole; 131-second ball core; 132-fourth sealing ring; 133-fifth sealing ring; 141-power unit; 142-transmission unit; 1411-rotating member; 1421-driving shaft; 1422-driving gear; 1423-driven gear; 1424-driven shaft; 1212-first slot; 160-travel switch; 1425-first end tooth; 1426-second end tooth. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] Example

[0036] The dual fuel supply system includes a control panel and a dual fuel conversion valve. The control panel is used to install the dual fuel conversion valve, and the control panel is installed in the control room. Optionally, the control panel can be installed on the wall of the control room, with one surface of the control panel facing the control room and the other surface facing the mechanical room where the mechanical parts are installed.

[0037] Optionally, the control room can be a cab of a vehicle or an operating room of a machine. The embodiment of the present application is not limited thereto. A user or staff can operate the dual-fuel conversion valve indoors to switch fuels, and there is no need to open the mechanical room where mechanical parts are installed to operate the dual-fuel conversion valve, which is more convenient to use.

[0038] Figure 1 The schematic diagram of the dual fuel conversion valve provided in this embodiment is as follows: Figure 2 This is an exploded view of the dual fuel conversion valve provided in this embodiment. Figure 1 and Figure 2In this embodiment, the dual fuel conversion valve includes a valve body 110, a first valve core assembly 120, a second valve core assembly 130, a drive assembly 140 and a cover plate 150. The first valve core assembly 120 and the second valve core assembly 130 are installed inside the valve body 110, the cover plate 150 is covered on the valve body 110, and the drive assembly 140 drives and connects the first valve core assembly 120 and the second valve core assembly 130. When installing the dual fuel conversion valve, the cover plate 150 is installed on the control panel (not shown), so that part of the structure of the drive assembly 140 is located on one side of the control panel, and the other part of the structure is located on the other side of the control panel, which is convenient for operation and will not affect the installation of the dual fuel conversion valve.

[0039] Optionally, the valve body 110 has a first channel 1111 and a second channel 1112 which are independent of each other, and the fuels flowing in the dual-fuel conversion valve are fuel gas and fuel oil respectively. After the fuel conversion valve is switched for a long time, there will be no problem of conduction between the first channel 1111 and the second channel 1112, and the mixing of fuel gas and fuel oil can be avoided.

[0040] The valve body 111 is provided with a first gas joint 1113, a second gas joint 1114, a first oil joint 1115 and a second oil joint 1116. The first oil joint 1115 and the second oil joint 1116 are connected to the first channel 1111, and the first oil joint 1115 is provided at one end of the first channel 1111, and the second oil joint 1116 is provided at the other end; the first gas joint 1113 and the second gas joint 1114 are connected to the second channel 1112, and the first gas joint 1113 is provided at one end of the second channel 1112, and the second gas joint 1114 is provided at the other end.

[0041] In this embodiment, in order to facilitate the arrangement of the first channel 1111 and the second channel 1112, the housing structure of the valve body 111 can be convexly arranged in a direction away from the cover plate 150, thereby facilitating the installation of the first channel 1111 and the second channel 1112. In other embodiments, the first housing of the first channel 1111 and the second housing of the second channel 1112 can also be arranged as two separate housings.

[0042] The first valve core assembly 120 is configured to open or close the first channel 1111, and the second valve core assembly 130 is configured to open or close the second channel 1112. Through the setting of the first valve core assembly 120 and the second valve core assembly 130, the opening or closing of the first channel 1111 and the second channel 1112 can be controlled.

[0043] The specific structures of the first valve core assembly 120 and the second valve core assembly 130 are described below. For example, the first valve core assembly 120 and the second valve core assembly 130 are both ball valves. The first valve core assembly 120 includes a first ball core 121, a first sealing ring 122, a second sealing ring 123 and a first filter screen 124. The first ball core 121 is arranged in the first channel 1111. The first oil joint 1115 is installed on the valve body 111 and connected to the first channel 1111. The first sealing ring 122 is arranged between the first oil joint 1115 and the valve body 111. The second oil joint 1116 is installed on the valve body 111 and connected to the first channel 1111. The second sealing ring 123 is arranged between the second oil joint 1116 and the valve body 111 to avoid oil leakage.

[0044] In this embodiment, the first oil joint 1115 and the second oil joint 1116 can be connected to the two ends of the first channel 1111 respectively, and the second oil joint 1116 can also be connected to the middle of the first channel 1111. Optionally, the fuel oil enters the first channel 1111 from the first oil joint 1115, and flows through the second oil joint 1116 to enter the dual-fuel mixer. A first ball core 121 is arranged at one end of the first channel 1111 close to the first oil joint 1115, and the first ball core 121 has a first through hole 1211. A first filter screen 124 is arranged at one end of the first channel 1111 close to the second oil joint 1116, and a filter chamber is formed between the first filter screen 124 and the end of the valve body 111 away from the first oil joint 1115. When the fuel oil enters the first channel 1111 through the first oil joint 1115, it passes through the first through hole 1211, and then passes through the first filter screen 124, enters the filter chamber, and then is discharged from the second oil joint 1116 to enter the dual-fuel mixer. The fuel oil can be filtered to prevent impurities from entering the dual fuel mixer.

[0045] Optionally, the second oil connector 1116 is disposed between the end of the first channel 1111 away from the first oil connector 1115 and the first filter screen 124. In another embodiment, the second oil connector 1116 may not be disposed at the end of the first channel 1111 away from the first oil connector 1115. After the oil is filtered by the first filter screen 124, it enters the filter chamber. After the filtered fuel oil flows into the filter chamber, it flows out from the second oil connector 1116 through reflux, so that the fuel oil flowing into the dual-fuel mixer is cleaner.

[0046] Optionally, a filter plug 1117 is provided on the valve body 111, and the filter plug 1117 is provided at an end of the first channel 1111 away from the first oil joint 1115. A third sealing ring 125 is provided between the filter plug 1117 and the valve body 111. The plug opening of the filter plug 1117 is connected to the filter chamber of the first channel 1111. When the filter chamber contains too much impurities, the filter plug 1117 can be removed to discharge the impurities. The first filter screen 124 can also be removed to clean and replace the filter screen.

[0047] The second valve core assembly 130 includes a second ball core 131, a fourth sealing ring 132 and a fifth sealing ring 133. The second ball core 131 is arranged in the second channel 1112. The first air joint 1113 is installed on the valve body 111 and connected to the second channel 1112. The fourth sealing ring 132 is arranged between the first air joint 1113 and the valve body 111. The second air joint 1114 is installed on the valve body 111 and connected to the second channel 1112. The fifth sealing ring 133 is arranged between the second air joint 1114 and the valve body 111 to avoid air leakage.

[0048] The first gas joint 1113 and the second gas joint 1114 are respectively connected to the two ends of the second channel 1112. The fuel gas enters the second channel 1112 from the second gas joint 1114 and flows through the first gas joint 1113 into the dual-fuel mixer. A second ball core 131 is arranged in the second channel 1112. The second ball core 131 has a second through hole. The fuel gas enters the second channel 1112 through the second gas joint 1114, passes through the second through hole, and is discharged from the first gas joint 1113 and enters the dual-fuel mixer.

[0049] In this embodiment, the fuel oil enters the first channel 1111 from the first oil joint 1115 and is discharged from the first channel 1111 from the second oil joint 1116; the fuel gas enters the second channel 1112 from the second gas joint 1114 and is discharged from the second channel 1112 from the first gas joint 1113. The axis of the first channel 1111 is parallel to the axis of the second channel 1112, and the flow direction of the fuel oil in the first channel 1111 is opposite to the flow direction of the fuel gas in the second channel 1112. After the dual-fuel conversion valve is installed, the fuel oil flows downward and the fuel gas flows upward (wherein, Figure 1 The direction indicated by the arrow in the figure is the flow direction of the fuel). Since the density of the fuel oil is greater than that of the fuel gas, the flow of the fuel is smoother. In other embodiments, the fuel gas can also enter the second channel 1112 from the first gas connector 1113, and the second gas connector 1114 discharges the second channel 1112 to circulate the fuel gas.

[0050] The driving assembly 140 includes a power unit 141 and a transmission unit 142. A cover plate 150 is installed on the control panel. The panel surface of the control panel contacts the panel surface of the cover plate 150. The cover plate 150 is covered on the valve body 110. The power unit 141 and the transmission unit 142 are respectively arranged on both sides of the cover plate 150. The transmission unit 142 and the valve body 110, the first valve core assembly 120 and the second valve core assembly 130 are located on the same side of the cover plate 150. The power unit 141 and the transmission unit 142 are respectively arranged on both sides of the control panel. For example, the power unit 141 is installed in the control room, and the transmission unit 142, the valve body 110, the first valve core assembly 120 and the second valve core assembly 130 are installed in the mechanical room to facilitate the control of the power unit 141.

[0051] In this embodiment, the power unit 141 is connected to the transmission unit 142, and the transmission unit 142 is transmission-connected to the first valve core assembly 120 and the second valve core assembly 130. The power unit 141 drives the transmission unit 142 to switch the valve body 110 between the first working state and the second working state. When the valve body 110 is in the first working state, the first channel 1111 is connected and the second channel 1112 is closed. When the valve body 110 is in the second working state, the first channel 1111 is closed and the second channel 1112 is connected.

[0052] The power unit 141 on one side of the control panel can be rotated to control the transmission unit 142 to switch the valve body 110 from the first working state to the second working state or from the second working state to the first working state. The first channel 1111 or the second channel 1112 can be controlled to be open so as to supply different fuels to the dual-fuel mixer, thereby achieving the purpose of switching the fuel supplied to the dual-fuel mixer.

[0053] Optionally, the valve body 110 includes a valve main body 111 and a valve plate 112, the valve main body 111 is provided with a first channel 1111 and a second channel 1112 which are independent of each other, the valve main body 111 is arranged on one side of the valve plate 112, the valve plate 112 is covered with a cover plate 150 and forms a cavity 113 with the cover plate 150, the transmission part 142 is located in the cavity 113, and the power part 141 is arranged on the side of the cover plate 150 away from the valve main body 111, so as to facilitate the installation of the transmission part 142, thereby making the transmission of the conversion valve more precise and the control of the valve more precise.

[0054] Figure 3 A schematic diagram of the installation structure of the transmission part 142 in the dual fuel conversion valve provided in this embodiment; Figure 4 This is a schematic diagram of the rotation of the rotating member 1411 in the dual fuel conversion valve provided in this embodiment. Figure 3 and Figure 4The power part 141 is a rotating member 1411, and the transmission part 142 includes a driving shaft 1421, a transmission member and a driven shaft 1424. The transmission member is located in the cavity 113, and the driving shaft 1421 and the driven shaft 1424 are connected through the transmission member. The transmission member includes a driving gear 1422 and a driven gear 1423 that are meshed with each other. The driving gear 1422 is sleeved outside the driving shaft 1421, and the driven gear 1423 is sleeved outside the driven shaft 1424. The first end of the driving shaft 1421 passes through the cover plate 150 and is connected to the rotating member 1411, and the second end passes through the valve plate 112 and is connected to the first valve core assembly 120. The driving end of the driven shaft 1424 passes through the valve plate 112 and is connected to the second valve core assembly 130.

[0055] Optionally, Figure 5 This is a schematic diagram of the connection structure of the first ball core 121 in the dual fuel conversion valve provided in this embodiment. Figure 5 , the second end of the active shaft 1421 is clamped on the first ball core 121, the driving end of the driven shaft 1424 is clamped on the second ball core 131, and the axis of the first through hole 1211 is perpendicular to the axis of the second through hole. Since the axis of the first channel 1111 is parallel to the axis of the second channel 1112, and the axis of the first through hole 1211 is perpendicular to the axis of the second through hole, the axis of the first through hole 1211 is collinear with the axis of the first channel 1111, the first channel 1111 is conductive, the axis of the second through hole crosses the axis of the second channel 1112, the second channel 1112 is not conductive, the axis of the second through hole is collinear with the axis of the second channel 1112, the second channel 1112 is conductive, the axis of the first through hole 1211 crosses the axis of the first channel 1111, and the first channel 1111 is closed.

[0056] Optionally, a first slot 1212 is provided on the surface of the first core 121, the second end of the driving shaft 1421 is clamped in the first slot 1212, a second slot is provided on the surface of the second core 131, the driving end of the driven shaft 1424 is clamped in the second slot, and the extension direction of the first slot 1212 is perpendicular to the extension direction of the second slot. In this embodiment, the pitch of the driving gear 1422 is consistent with the pitch of the driven gear 1423, the diameter of the driving shaft 1421 is consistent with the diameter of the driven shaft 1424, and the rotation angle of the driving shaft 1421 is consistent with the rotation angle of the driven shaft 1424.

[0057] in, Figure 4The arrow in the figure indicates the rotation direction of the rotating member 1411. The rotating member 1411 is rotated 90° clockwise, and the driving shaft 1421 connected to the rotating member 1411 is rotated 90° clockwise, so that the axis of the first through hole 1211 is consistent with the extension direction of the axis of the first channel 1111, and the first channel 1111 is connected. At the same time, due to the rotation of the driving shaft 1421, the driving gear 1422 sleeved outside the driving shaft 1421 rotates, the driven gear 1423 meshing with the driving gear 1422 rotates, and the driven shaft 1424 sleeved in the driven gear 1423 rotates, and the driven shaft 1424 also rotates 90°, so that the axis of the second through hole is perpendicular to the extension direction of the axis of the second channel 1112, and the second channel 1112 is closed, and the first working state is obtained. Then it is rotated 90° counterclockwise to obtain the second working state.

[0058] In this embodiment, the driving gear 1422 and the driven gear 1423 are both horizontal gears. In other embodiments, the driving gear 1422 and the driven gear 1423 can also be double ratchet gears, as long as the driving gear 1422 and the driven gear 1423 can achieve meshing transmission and can cooperate with the driving shaft 1421 and the driven shaft 1424 to control the rotation of the first ball core 121 and the second ball core 131, they are all within the protection scope of the embodiment of the present application.

[0059] In this embodiment, a mounting hole is provided on the surface of the rotating member 1411 facing the cover plate 150, and the first end of the driving shaft 1421 is inserted into the mounting hole. Optionally, the cross section of the first end of the driving shaft 1421 is a profiled surface, and the cross section of the mounting hole is a profiled hole. The mounting hole cooperates with the driving shaft 1421, and during the rotation of the rotating member 1411, the driving shaft 1421 that cooperates with the mounting hole of the rotating member 1411 also rotates synchronously. In other embodiments, a sleeve may be provided between the mounting hole and the driving shaft 1421, so that during the rotation of the rotating member 1411, the driving shaft 1421 installed on the rotating member 1411 also rotates synchronously.

[0060] In this embodiment, the length of the driving shaft 1421 passing through the valve plate 112 is consistent with the length of the driven shaft 1424 passing through the valve plate 112, the distance between the first ball core 121 on the driving shaft 1421 and the valve plate 112 is equal to the distance between the second ball core 131 on the driven shaft 1424 and the valve plate 112, and the convexity of the housing provided with the first channel 1111 is consistent with the convexity of the housing provided with the second channel 1112. In other embodiments, the distance between the first ball core 121 on the driving shaft 1421 and the valve plate 112 is also different from the distance between the second ball core 131 on the driven shaft 1424 and the valve plate 112.

[0061] Figure 6 This is a connection diagram of the dual fuel supply system provided in this embodiment. Figure 6In this embodiment, the first oil connector 1115 is connected to the first oil pipe, and the first fuel channel switch is provided on the first oil pipe. The second oil connector 1116 is connected to the dual-fuel mixer through the second oil pipe. The first fuel channel switch can be an electric oil circuit controller, which can be controlled by a first one-way electronic valve, and the electric oil circuit controller is installed at the electric oil circuit control point of the first oil pipe, and can control the on and off of the oil circuit.

[0062] The second gas connector 1114 is connected to the first gas pipe, and the first gas pipe is provided with a second fuel channel switch. The first gas connector 1113 is connected to the dual-fuel mixer through the second gas pipe. Among them, the second fuel channel switch is an electric gas circuit controller, which can be controlled by a second one-way electronic valve. The electric gas circuit controller is installed at the electric gas circuit control point of the first gas pipe, and can control the on and off of the gas circuit. In addition, the gas pipe between the electric gas circuit control point and the second gas interface is also provided with a gas pressure reducing valve to increase the safety of use.

[0063] Figure 7 A schematic diagram of a first connection structure between the transmission part 142 and the travel switch 160 provided in an embodiment of the present application; Figure 8 This is a schematic diagram of a second connection structure between the transmission part 142 and the travel switch 160 provided in the embodiment of the present application. Figure 7 and Figure 8 The fuel switching valve further includes a travel switch 160 that cooperates with the transmission part 142. When the valve body 110 is in the first working state, the transmission part 142 is disengaged from the travel switch 160, and the switch of the first fuel channel connected to the first channel 1111 is opened; when the valve body 110 is in the second working state, the transmission part 142 touches the travel switch 160, and the switch of the second fuel channel connected to the second channel 1112 is opened.

[0064] During the switching process between the first working state and the second working state, if the dual-fuel conversion valve is in the first working state, the transmission part 142 disengages from the travel switch 160, so that the first one-way electronic valve is energized, the first one-way electronic valve controls the electric oil circuit control point to be turned on, and the fuel oil can enter the first channel 1111; if the dual-fuel conversion valve is in the second working state, the transmission part 142 touches the travel switch 160, so that the second one-way electronic valve is energized, the second one-way electronic valve controls the electric gas circuit control point to be turned on, and the fuel gas can enter the second channel 1112. Therefore, in the process of controlling the transmission of the transmission part 142, it is possible to control the on-off of the oil circuit or the gas circuit by disengaging or moving away from the travel switch 160, and to control the first ball core 121 and the second ball core 131 through the active shaft 1421 and the driven shaft 1424 to control the on-off of the first channel 1111 or the second channel 1112. If the oil circuit and the first channel 1111 are connected in unison, the fuel oil can enter the dual-fuel mixer, and if the gas circuit and the second channel 1112 are connected in unison, the fuel gas can enter the dual-fuel mixer. Two control methods are realized by rotating the rotating part 1411, thereby improving the safety of the dual-fuel conversion valve.

[0065] Optionally, the travel switch 160 is mounted on the valve body 110, the spring piece and contact of the travel switch 160 are located in the cavity 113, the electrical connection column of the travel switch 160 is located outside the cavity 113, and the electrical connection column extends out of the valve body 110 so as to energize the travel switch 160 and electrically connect the travel switch 160 with the first one-way electronic valve and the second one-way electronic valve. The driving gear 1422 is a sector tooth, and the sector tooth has a first end tooth 1425 and a second end tooth 1426. The spring piece of the travel switch 160 is located on the rotation path of the first end tooth 1425. When the valve body 110 is in the first working state, the first end tooth 1425 is separated from the spring piece of the travel switch 160; when the valve body 110 is in the second working state, the first end tooth 1425 touches the spring piece of the travel switch 160.

[0066] The rotating member 1411 is rotated 90° clockwise, and the driving gear 1422 is rotated 90° clockwise, so that the dual-fuel conversion valve is in the first working state, and the first end tooth 1425 of the driving gear 1422 touches to form a switch, so that the first one-way electronic valve is energized, and the first one-way electronic valve controls the electric oil circuit control point to be connected, and the fuel oil can enter the first channel 1111; the rotating member 1411 is rotated 90° counterclockwise, and the driving gear 1422 is rotated 90° counterclockwise, so that the dual-fuel conversion valve is in the second working state, and the first end tooth 1425 of the driving gear 1422 touches the spring of the travel switch 160, so that the second one-way electronic valve is energized, and the second one-way electronic valve controls the electric gas circuit control point to be connected, and the fuel gas can enter the second channel 1112. Two control modes are realized to improve the safety of the dual-fuel conversion valve.

[0067] In another embodiment, the driven gear 1423 may be a sector-shaped tooth, and the spring sheet of the travel switch 160 is located on the rotation path of the driven gear 1423. In other embodiments, a contact member may be provided on the driving gear 1422 or the driven gear 1423, so that the driving gear 1422 or the driven gear 1423 can selectively disengage from the spring sheet of the travel switch 160 during the rotation process.

[0068] The working principle of the dual fuel supply system provided in the embodiment of the present application is: a hole is drilled on the control panel, the rotating member 1411 is removed, the first end of the driving shaft 1421 passes through the hole so that the plate surface of the cover plate 150 contacts the plate surface of the control panel, and the rotating member 1411 is installed on the driving shaft 1421 so that the rotating member 1411 is located in the control chamber, and the valve body 110, the cover plate 150, the driving gear 1422, the driven gear 1423, the first valve core assembly 120 and the second valve core assembly 130 are all located in the mechanical chamber.

[0069] When fuel switching is required, the user directly rotates the rotating member 1411 90° clockwise in the control room, the driving shaft 1421 rotates 90° clockwise, and the first ball core 121 connected to the driving shaft 1421 rotates 90°, so that the axis of the first through hole 1211 is consistent with the axis of the first channel 1111, and the first channel 1111 is connected. The driving gear 1422 sleeved on the driving shaft 1421 rotates 90° clockwise, so that the first end tooth 1425 of the driving gear 1422 is separated from the spring of the travel switch 160, so that the first one-way electronic valve is energized, and the first one-way electronic valve controls the electric oil circuit control point to be connected, and the fuel oil can enter the first channel 1111. The driven gear 1423 meshing with the driving gear 1422 rotates counterclockwise by 90°, the axis of the second through hole intersects with the axis of the second channel 1112, the second channel 1112 is disconnected, the second one-way electronic valve is not energized, the electric gas circuit control point cannot be conducted, and the fuel gas cannot enter the second channel 1112.

[0070] On the contrary, the rotating member 1411 is rotated 90° counterclockwise to switch the dual fuel switching valve.

[0071] The above is only a part of the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dual fuel conversion valve, It is characterized in that include: A valve body, the valve body having a first channel and a second channel independent of each other, the valve body comprising a valve plate; a first valve core assembly configured to open or close the first channel; a second valve core assembly, configured to open or close the second channel; A driving assembly, comprising a power unit and a transmission unit which are arranged on both sides of the control panel, wherein the power unit is connected to the transmission unit, and the transmission unit is transmission-connected to the first valve core assembly and the second valve core assembly; The power unit drives the transmission unit to switch the valve body between a first working state and a second working state; when the valve body is in the first working state, the first channel is open and the second channel is closed; When the valve body is in the second working state, the first channel is closed and the second channel is connected; The dual-fuel conversion valve further includes a travel switch matched with the transmission part; when the valve body is in the first working state, the transmission part is separated from the travel switch, and the switch of the first fuel channel connected to the first channel is opened; when the valve body is in the second working state, the transmission part touches the travel switch, and the switch of the second fuel channel connected to the second channel is opened; The power part is a rotating member, and the transmission part includes a driving shaft, a transmission member and a driven shaft. The first end of the driving shaft is connected to the rotating member, and the second end is connected to the first valve core assembly. The driving shaft and the driven shaft are connected to each other through the transmission member, and the driving end of the driven shaft passes through the valve plate and is connected to the second valve core assembly. The transmission member includes a driving gear and a driven gear that mesh with each other, the driving gear is sleeved outside the driving shaft, and the driven gear is sleeved outside the driven shaft; the driving gear is a sector tooth, and the sector tooth has a first end tooth and a second end tooth; the spring piece of the travel switch is located on the rotation path of the first end tooth, and when the valve body is in the first working state, the first end tooth is separated from the spring piece of the travel switch; when the valve body is in the second working state, the first end tooth touches the spring piece of the travel switch.

2. The dual fuel switching valve according to claim 1, It is characterized in that It also includes a cover plate configured to be installed on the control panel, the cover plate covers the valve body, the power unit is located on one side of the cover plate, and the transmission unit and the valve body are located on the other side of the cover plate.

3. The dual fuel switching valve according to claim 2, It is characterized in that The valve body also includes a valve main body, which has the first channel and the second channel. The valve main body is arranged on one side of the valve plate. The valve plate cover is equipped with the cover plate and forms a cavity with the cover plate. The transmission part is located in the cavity.

4. The dual fuel switching valve according to claim 1, It is characterized in that The first valve core assembly includes a first ball core having a first through hole, the first ball core is disposed in the first channel, and the second end of the driving shaft is clamped on the first ball core; The second valve core assembly includes a second ball core having a second through hole, the second ball core is arranged in the second channel, the driving end of the driven shaft is clamped on the second ball core, and the axis of the first through hole is perpendicular to the axis of the second through hole.

5. A dual fuel supply system, It is characterized in that It comprises a control panel and the dual-fuel conversion valve according to any one of claims 1 to 4, wherein the power unit and the transmission unit are arranged on both sides of the control panel.

6. The dual fuel supply system according to claim 5, It is characterized in that The control panel is installed in a control room, the power unit is configured to be installed in the control room, and the transmission unit is configured to be installed outside the control room.

Images