Marine LNG (Liquefied Natural Gas) dual-fuel efficient multi-channel detection device

Abstract

The utility model discloses a marine LNG (Liquefied Natural Gas) dual-fuel high-efficiency multichannel detection device, which relates to the technical field of fuel conveying and comprises two first breather pipes, the two first breather pipes are symmetrically distributed left and right, and the front sides of the two first breather pipes are fixedly connected with second breather pipes through flange structures; the outer sides of the two first ventilation pipes are movably sleeved with closing mechanisms, the sides, close to each other, of the closing mechanisms are fixedly connected with three-way pipes, and the sides, close to each other, of the closing mechanisms are fixedly connected with fastening mechanisms. According to the marine LNG dual-fuel efficient multi-channel detection device, the joint of the first breather pipe and the second breather pipe is sealed through the lower sealing shell and the upper sealing shell, and then the detection assembly is adopted to detect the joint, so that gas leakage can be rapidly detected and an alarm is given when the gas leakage occurs; and the influence on surrounding environment safety caused by excessive fuel leakage due to untimely detection is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel delivery technical field, especially in kind of marine LNG dual -fuel high -efficient multi -pass detection device. BACKGROUND

[0002] With the increasingly serious global environmental pollution, has caused direct threat to the human living environment, so in recent years people's environmental protection consciousness gradually enhances, also as far as possible through some means and methods to reduce the damage to the ecological environment, among them exhaust emission in the air is particularly concerned, air pollution is the problem that the whole world is urgent to solve. At present, all countries in the world are actively looking for and developing new clean energy to replace the original energy, the purpose is to reduce the emission of air pollution exhaust. LNG liquefied natural gas is a new clean energy, its environmental protection and economic applicability determines that it will occupy an important position in the future energy field, at present, our country shipping industry has begun LNG energy use, and has begun to carry out the reform plan of replacing the original diesel single fuel engine with LNG-diesel dual fuel engine.

[0003] Chinese patent document CN206845343U discloses a kind of marine LNG-diesel dual fuel engine gas supply conveying gas rail, belong to marine diesel engine energy reform, single diesel fuel power is changed into LNG-diesel dual fuel power technical field.For solve the problem that natural gas cannot enter engine stably.The gas supply conveying gas rail of the utility model is connected with the outlet of gas inlet channel, and the liquefied natural gas is conveyed to the engine;One end of N branch gas rail is communicated with main gas rail, and main gas rail and N branch gas rail are integrated structure;The other end of N branch gas rail is open end, and the open end of N branch gas rail is communicated with the gas inlet of N gas injection valve respectively;Main gas rail is open cylindrical cavity at one end;The open end of main gas rail is communicated with the outlet of gas inlet channel;N is even number greater than or equal to 2.The beneficial effect is that the gas tightness of gas supply conveying gas rail is good, which can meet the requirement of safe and stable delivery of natural gas to engine.

[0004] The existing technology has the following problems:

[0005] The injection valve is directly connected with the branch gas rail on the gas rail, but in specific operation, gas leakage is easy to occur at the pipeline connection, which needs to be detected, and the alarm needs to be responded quickly when gas leakage occurs to avoid long-term leakage and affect the safety of the surrounding environment. Utility model content

[0006] The utility model provides a kind of marine LNG dual -fuel high -efficient multi -pass detection device to solve the problems raised in the above background technique.

[0007] The utility model provides to adopt the technical scheme that

[0008] A marine LNG dual-fuel high-efficiency multi-channel detection device, comprising a first air pipe, the first air pipe is symmetrical distribution two, two first air pipe's front side all are fixedly connected with second air pipe through flange structure, two first air pipe's outside all movably sleeve joint has closed mechanism, closed mechanism mutually close one side all are fixedly connected with three -way pipe, closed mechanism mutually close one side all are fixedly connected with fastening mechanism,

[0009] The closed mechanism includes a lower closed shell, the inner side of the lower closed shell is movably sleeved on the outer side of the first air pipe and the second air pipe near the bottom, the outer side of the first air pipe and the second air pipe near the upper side movably sleeve joint has upper closed shell, the outer side of the left and right sides wings of the lower closed shell and the upper closed shell all movably sleeve joint has fixed sleeve, the outer side of the lower closed shell away from the three -way pipe position movably installs detection assembly, the outer side of the upper closed shell near the upper side position's left and right sides fixedly connected with the exhaust pipe of left and right distribution two, the left and right sides of the three -way pipe are connected together with the exhaust pipe near the fastening mechanism side.

[0010] Preferably, the inner side of the lower closed shell and the upper closed shell is fixedly connected with a limiting assembly, the limiting assembly includes a sleeve, the front and rear sides of the sleeve away from the first air pipe side are fixedly connected with two telescopic rods distributed in front and back, the inner side of the lower closed shell and the upper closed shell away from each other is fixedly connected with the telescopic rod away from the sleeve side, the outer side of two telescopic rods all movably sleeve joint has spring.

[0011] Preferably, the upper side of the lower closed shell near the inner edge is fixedly connected with two clamping strips distributed in left and right, the inner side of the lower closed shell and the upper closed shell near the recess of the front and rear sides is fixedly sleeved with four clamping plates distributed in rectangle.

[0012] Preferably, the inner side of the lower closed shell and the upper closed shell is fixedly sleeved with an adsorption layer.

[0013] Preferably, the fastening mechanism includes an extension rod, the outer side of the extension rod movably sleeve joint has extension pipe, the outer side of the extension pipe near the right side position movably sleeve joint has threaded sleeve, the right side of the threaded sleeve and the left side of the extension rod all are fixedly connected with rotating seat, two rotating seats away from each other all are rotatably connected with support seat, the side of the support seat away from the extension rod is fixedly connected in the side of the fixed sleeve away from the first air pipe, the outer side of the extension rod is equipped with a plurality of transversely distributed insertion holes.

[0014] Preferably, two limiting grooves distributed in front and back are arranged on the outer side of the extension rod, and the convex strips on the inner side of the extension pipe are slidably connected to the inner side of the limiting grooves.

[0015] Preferably, a threaded seat is rotationally connected to the outer side of the extension pipe close to the right side, and the inner side of the threaded seat is threadedly connected to the outer side of the threaded sleeve.

[0016] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0017] 1. The marine LNG dual-fuel efficient multi-channel detection device provided by the present application adopts the cooperation of the tee pipe, the first air pipe, the second air pipe, the sealing mechanism, the lower sealing shell, the upper sealing shell, the fixing sleeve, the detection assembly and the exhaust pipe, the connection between the first air pipe and the second air pipe is sealed by the lower sealing shell and the upper sealing shell, and then the detection assembly is used for detection, so that the leakage can be quickly detected and an alarm is triggered, and the leakage of fuel is avoided due to untimely detection, thereby affecting the safety of the surrounding environment.

[0018] 2. The marine LNG dual-fuel efficient multi-channel detection device provided by the present application adopts the cooperation of the lower sealing shell, the upper sealing shell, the fixing sleeve, the fastening mechanism, the extension rod, the extension pipe, the threaded sleeve, the rotating seat, the supporting seat, the insertion hole, the limiting groove and the threaded seat, the extension pipe and the extension rod are jointly supported, the fixation of the fixing sleeve to the lower sealing shell and the upper sealing shell is enhanced, and the sealing property between the lower sealing shell and the upper sealing shell is improved while the lower sealing shell and the upper sealing shell cannot rotate with the first air pipe and the second air pipe. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the present application;

[0020] Figure 2 It is a partial cross-sectional three-dimensional structure schematic view of the present application;

[0021] Figure 3 It is a partial cross-sectional three-dimensional structure schematic view of the sealing mechanism part of the present application;

[0022] Figure 4 It is a three-dimensional structure schematic view of the present application Figure 3 It is an enlarged structure schematic view of part A of the present application;

[0023] Figure 5 It is a partial cross-sectional three-dimensional structure schematic view of the fastening mechanism part of the present application.

[0024] In the figure: 1, the first vent pipe; 2, the second vent pipe; 3, the closure mechanism; 31, the lower closure shell; 32, the upper closure shell; 33, the fixing sleeve; 34, the detection assembly; 35, the exhaust pipe; 36, the limiting assembly; 361, the clamping sleeve; 362, the telescopic rod; 363, the spring; 37, the clamping strip; 38, the clamping plate; 4, the tee pipe; 5, the fastening mechanism; 51, the extension rod; 52, the extension pipe; 53, the threaded sleeve; 54, the rotating seat; 55, the supporting seat; 56, the insertion hole; 57, the limiting groove; 58, the threaded seat. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0026] As shown in Figures 1-5 A marine LNG dual-fuel high-efficiency multi-channel detection device, comprising a first vent pipe 1, two first vent pipes 1 are symmetrically distributed left and right, the front side of the two first vent pipes 1 is fixedly connected with a second vent pipe 2 through a flange structure, the outer side of the two first vent pipes 1 is movably sleeved with a closure mechanism 3, the side close to each other of the closure mechanism 3 is fixedly connected with a tee pipe 4, and the side close to each other of the closure mechanism 3 is fixedly connected with a fastening mechanism 5.

[0027] The closure mechanism 3 comprises a lower closure shell 31, the inner side of the lower closure shell 31 is movably sleeved on the outer side of the first vent pipe 1 and the second vent pipe 2 close to the bottom, the outer side of the first vent pipe 1 and the second vent pipe 2 close to the upper side is movably sleeved with an upper closure shell 32, the outer side of the left and right side wings of the lower closure shell 31 and the upper closure shell 32 is movably sleeved with a fixing sleeve 33, the outer side of the lower closure shell 31 away from the tee pipe 4 is movably installed with a detection assembly 34, the outer side of the upper closure shell 32 close to the upper side is fixedly connected with two left and right distributed exhaust pipes 35, and the left and right sides of the tee pipe 4 are connected together with the exhaust pipe 35 close to the side of the fastening mechanism 5.

[0028] It should be noted that the detection assembly 34 contains alarm components, detection components, indicator light components, air pressure sensors and other components, two detection assemblies 34 detect LNG and diesel respectively, and when LNG or diesel is detected, an alarm is sent, and electromagnetic valves are provided on the three branches of the tee pipe 4, and when the air pressure inside the lower closure shell 31 and the upper closure shell 32 is too large, the electromagnetic valve on that side is opened to exhaust the gas.

[0029] As shown in Figure 4As shown, the inner side of the lower closed shell 31 and the upper closed shell 32 away from each other are fixedly connected with a limiting assembly 36, the limiting assembly 36 comprises a sleeve 361, the front and rear sides of the sleeve 361 away from the first ventilation pipe 1 are fixedly connected with two telescopic rods 362 distributed in front and back, the side of the telescopic rod 362 away from the sleeve 361 is fixedly connected with the inner side of the lower closed shell 31 and the upper closed shell 32 away from each other, and the outer sides of the two telescopic rods 362 are movably sleeved with springs 363.

[0030] It should be noted that the sleeve 361 is clamped on the outer side of the flange structure between the first ventilation pipe 1 and the second ventilation pipe 2, which is used to limit the position of the lower closed shell 31 and the upper closed shell 32, so that they cannot move forward and backward, affecting the sealing performance.

[0031] As shown in the figure, Figure 3 The upper side of the lower closed shell 31 near the inner edge is fixedly connected with two clamping strips 37 distributed in left and right, and the inner sides of the lower closed shell 31 and the upper closed shell 32 near the front and rear sides are fixedly sleeved with four clamping plates 38 distributed in rectangle.

[0032] It should be noted that the clamping strip 37 is made of rubber material, and when the lower closed shell 31 and the upper closed shell 32 are buckled with each other, the clamping strip 37 is squeezed and tightly attached to the upper closed shell 32, which enhances the sealing performance, and the clamping plate 38 is used to enhance the sealing performance of the lower closed shell 31 and the upper closed shell 32 to the first ventilation pipe 1 and the second ventilation pipe 2.

[0033] As shown in the figure, Figure 3 The inner sides of the lower closed shell 31 and the upper closed shell 32 are fixedly sleeved with an adsorption layer.

[0034] It should be noted that the adsorption layer is used to adsorb the residual gas around the first ventilation pipe 1 and the second ventilation pipe 2 after maintenance, so as to avoid false triggering of the alarm.

[0035] As shown in the figure, Figure 5 The fastening mechanism 5 comprises an extension rod 51, the outer side of the extension rod 51 is movably sleeved with an extension pipe 52, the outer side of the extension pipe 52 near the right side is movably sleeved with a threaded sleeve 53, the right side of the threaded sleeve 53 and the left side of the extension rod 51 are fixedly connected with a rotating seat 54, the positions away from each other of the two rotating seats 54 are rotatably connected with a supporting seat 55, the side of the supporting seat 55 away from the extension rod 51 is fixedly connected with the side of the fixed sleeve 33 away from the first ventilation pipe 1, and the outer side of the extension rod 51 is provided with a plurality of transversely distributed insertion holes 56.

[0036] It should be noted that the insertion hole 56 is used to insert a pin. By inserting the pin into the inner side of the insertion hole 56 at different positions, the total length of the extension rod 51 and the extension tube 52 can be adjusted, thereby enabling the extension rod 51 and the extension tube 52 to support the fixing sleeve 33. The fixing sleeve 33 and the inner side of the lower sealing shell 31 and the left and right wings of the upper sealing shell 32 are all wedge-shaped, so that the closer the fixing sleeve 33 is to the first vent pipe 1, the stronger its fixing effect on the lower sealing shell 31 and the upper sealing shell 32. The screw fixing method used between the fixing sleeve 33 and the lower sealing shell 31 and the upper sealing shell 32 is used to stabilize the front and rear ends of the fixing sleeve 33 and prevent the fixing sleeve 33 from being too long, which would cause the overall fixation of the wings to be unstable.

[0037] like Figure 5 As shown, two limiting grooves 57 are provided on the front and rear sides of the outer side of the extension rod 51, and the front and rear measuring protrusions of the inner side of the extension tube 52 are slidably connected to the inner side of the limiting grooves 57.

[0038] It should be noted that the limiting groove 57 is used to prevent relative rotation between the extension rod 51 and the extension tube 52, thus preventing the hole on the extension tube 52 for inserting the pin from being difficult to align with the insertion hole 56.

[0039] like Figure 5 As shown, a threaded seat 58 is rotatably connected to the outer side of the extension tube 52 near the right side, and the inner side of the threaded seat 58 is threadedly connected to the outer side of the threaded sleeve 53.

[0040] It should be noted that rotating the threaded seat 58 can adjust the distance between the extension tube 52 and the right support seat 55, thus compensating for the difficulty in adjusting the position between the insertion holes 56.

[0041] The utility model discloses a working principle: first, detection component 34 contains alarm component, detection component, pilot lamp component, barometric pressure sensor and other components, two detection components 34 respectively to LNG and diesel are detected, when detecting LNG or diesel, send alarm, three branch pipes of three -way pipe 4 all are equipped with solenoid valve, when the inside air pressure of lower closed shell 31 and upper closed shell 32 is too big, the solenoid valve of this side opens, and gas is extracted, and the connecting place of first vent pipe 1 and second vent pipe 2 is closed through lower closed shell 31 and upper closed shell 32, then adopts detection component 34 and detects, make quick detection and alarm when gas leakage, avoid the leakage fuel of not in time leading to more, influence surrounding environment safety, finally, the plug hole 56 is used for inserting the plug bolt, rely on the inside of the plug hole 56 of inserting different positions, and then adjust the total length of extension rod 51 and extension pipe 52, and then make extension rod 51 and extension pipe 52 support fixed sleeve 33, and the inside of fixed sleeve 33 and lower closed shell 31 and upper closed shell 32 left and right two side wings are all provided with wedge shape, make fixed sleeve 33 closer to first vent pipe 1, and its fixed effect between lower closed shell 31 and upper closed shell 32 is stronger, and the screw fixing mode between fixed sleeve 33 and lower closed shell 31 and upper closed shell 32 is used to stabilize the front and rear two ends of fixed sleeve 33, avoid the fixed sleeve 33 too long and lead to the fixation of wing plate not stable, through the common support of extension pipe 52 and extension rod 51, enhance the fixation of fixed sleeve 33 to lower closed shell 31 and upper closed shell 32, improve the sealing property between lower closed shell 31 and upper closed shell 32 when stabilizing lower closed shell 31 and upper closed shell 32 and not allowing first vent pipe 1 and second vent pipe 2 to rotate.

[0042] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A marine LNG dual fuel high-efficiency multi-channel detection device comprising a first air pipe (1), characterized in that: The first ventilation pipe (1) is symmetrical to the left and right, two second ventilation pipes (2) are fixedly connected to the front side of the two first ventilation pipes (1) through flange structures, and the outer sides of the two first ventilation pipes (1) are movably sleeved with closing mechanisms (3). The closing mechanism (3) comprises a lower closing shell (31), the inner side of the lower closing shell (31) is movably sleeved on the outer side of the first ventilation pipe (1) and the second ventilation pipe (2) near the bottom, the outer side of the first ventilation pipe (1) and the second ventilation pipe (2) near the upper side is movably sleeved with an upper closing shell (32), the outer sides of the left and right side wings of the lower closing shell (31) and the upper closing shell (32) are movably sleeved with fixing sleeves (33), the position away from the three-way pipe (4) on the outer side of the lower closing shell (31) is movably installed with a detection assembly (34), the left and right sides of the outer side of the upper closing shell (32) near the upper side are fixedly connected with two exhaust pipes (35) distributed on the left and right sides, and the left and right sides of the three-way pipe (4) are connected together with the exhaust pipes (35) near the side of the fastening mechanism (5).

2. The marine LNG dual-fuel high-efficiency multi-channel detection device according to claim 1, characterized in that: The inner sides of the lower closing shell (31) and the upper closing shell (32) are fixedly connected with limiting assemblies (36) away from each other, the limiting assembly (36) comprises a clamping sleeve (361), the front and rear sides of the side away from the first ventilation pipe (1) of the clamping sleeve (361) are fixedly connected with two telescopic rods (362) distributed in front and rear, and the side away from the clamping sleeve (361) of the telescopic rod (362) is fixedly connected on the inner sides of the lower closing shell (31) and the upper closing shell (32) away from each other.

3. The marine LNG dual-fuel high-efficiency multi-pass detection device according to claim 1, characterized in that: The upper side of the lower closing shell (31) is fixedly connected with two clamping strips (37) distributed on the left and right sides, and the inner sides of the lower closing shell (31) and the upper closing shell (32) are fixedly sleeved with four clamping plates (38) distributed in a rectangular shape in the recesses near the front and rear sides.

4. The marine LNG dual-fuel high-efficiency multi-pass detection device according to claim 1, characterized in that: The inner sides of the lower closing shell (31) and the upper closing shell (32) are fixedly sleeved with adsorption layers.

5. The marine LNG dual-fuel high-efficiency multi-pass detection device according to claim 1, characterized in that: The fastening mechanism (5) comprises an extension rod (51), the outer side of the extension rod (51) is movably sleeved with an extension pipe (52), the outer side of the extension pipe (52) near the right side is movably sleeved with a threaded sleeve (53), the right side of the threaded sleeve (53) and the left side of the extension rod (51) are fixedly connected with rotating bases (54), the positions away from each other of the two rotating bases (54) are rotatably connected with supporting bases (55), the side away from the extension rod (51) of the supporting base (55) is fixedly connected on the side away from the first ventilation pipe (1) of the fixing sleeve (33), and the outer side of the extension rod (51) is provided with a plurality of transversely distributed insertion holes (56).

6. The marine LNG dual-fuel high-efficiency multi-pass detection device according to claim 5, characterized in that: The outer side of the extension rod (51) is provided with two limiting grooves (57) distributed in front and back, and the inner side of the extension pipe (52) is slidably connected with the convex strip on the inner side of the limiting groove (57).

7. The marine LNG dual-fuel high-efficiency multi-pass detection device according to claim 5, characterized in that: The outer side of the extension pipe (52) is rotatably connected with a threaded seat (58) near the right side, and the inner side of the threaded seat (58) is threadedly connected with the outer side of the threaded sleeve (53).

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