LNG storage and distribution station gasification method and apparatus

Abstract

The application relates to an LNG storage and distribution station gasification equipment which comprises a supporting unit, a regulating unit and a gasification unit installed on the surface of the supporting unit. The regulating unit is internally provided with a hollow floating plate and a floating ball. The hollow floating plate is arranged at the bottom of the floating ball. When the regulating box is filled with liquid, the hollow floating plate and the floating ball are both moved upwards. The floating ball can seal the guide pipe. The position of the hollow floating plate and the floating ball is locked. When the liquid in the regulating box is lowered, the floating ball is locked by the hollow floating plate, so that the initial position is still in the locked state. Until the liquid surface is moved below the hollow floating plate, the hollow floating plate is automatically moved downwards, and the floating ball can be synchronously moved. At this time, the floating ball drives the sealing plug to be moved upwards, the guide pipe is opened, liquid is injected, and the liquefied natural gas can be automatically added when the liquid surface is below a certain height, so that the use is more reliable.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of natural gas storage and distribution stations, in particular to a LNG storage and distribution station gasification method and equipment thereof. BACKGROUND

[0002] Liquefied natural gas is a relatively advanced energy source. Compared with artificial gas, it is economical and practical, and has the same value as the heat value. Moreover, natural gas is clean and can prolong the service life of the stove, which is also conducive to reducing maintenance costs. In addition, the supply is stable, which can improve air quality and effectively improve the environment. With the continuous improvement of people's living standards, more and more urban residents begin to use natural gas. Before use, liquefied natural gas needs to be converted into gas, so LNG gasification devices are needed.

[0003] Nowadays, the LNG gasification device continuously conveys liquefied natural gas into the gasification device through a pipeline, and an electronic valve is arranged inside the gasification device. The electronic valve can be intermittently opened and closed to achieve the purpose of conveying liquid. However, in actual use, it is found that the electronic structure is easy to be damaged during use, and in the case of power failure, it cannot be used normally. However, in the case of power failure, the frequency of residents using natural gas will be higher, which is easy to cause the converted natural gas to be insufficient for use, and the efficiency cannot be guaranteed.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] To solve the above technical problems, the basic idea of the technical scheme adopted by the present application is:

[0006] A LNG storage and distribution station gasification equipment, comprising a supporting unit, and a regulating unit and a gasification unit installed on the surface of the supporting unit,

[0007] The supporting unit comprises a supporting plate, a supporting frame is arranged on the top of the supporting plate, and a regulating unit and a gasification unit are installed on the top of the supporting frame;

[0008] The regulating unit comprises a regulating box, a guide pipe is arranged inside the regulating box, a sealing plug is movably inserted into the guide pipe, an insertion rod is arranged on the top of the sealing plug, the insertion rod penetrates through the side wall of the guide pipe at the end, a first connecting rod is slidably connected to the end of the insertion rod, a second connecting rod is arranged at the end of the first connecting rod, a floating ball is arranged at the end of the second connecting rod, a vertical rod is slidably arranged on the side wall of the second connecting rod, a positioning block is arranged at the end of the vertical rod, a horizontal plate is arranged inside the regulating box, and a hollow floating plate is arranged inside the horizontal plate;

[0009] The gasification unit comprises a gasification tank, a thin-wall inner sleeve is fixedly welded inside the gasification tank, a cavity is formed between the thin-wall inner sleeve and the gasification tank, and heating fins are arranged inside the cavity.

[0010] As a preferred embodiment of the present application, the bottom of the support plate is provided with four support legs, the support legs are all made of metal, the bottom of the guide pipe is arranged below the control box, and an input pipe is connected to the bottom of the guide pipe, the diameter of the input pipe is larger than that of the guide pipe, and the height of the input pipe is located below the lower surface of the support plate.

[0011] As a preferred embodiment of the present application, the end of the insertion rod outside the guide pipe is fixedly provided with a U-shaped frame, a guide rod is transversely arranged inside the U-shaped frame, a pair of top rods are symmetrically arranged at the bottom of the U-shaped frame, the ends of each pair of top rods are movably inserted into the inner ring, and the outer shell of the inner ring is fixedly arranged on the surface of the guide pipe.

[0012] As a preferred embodiment of the present application, the outer wall of the guide pipe is fixedly provided with a pair of connecting seats, a rotating shaft is movably arranged inside the connecting seat, a first connecting rod is fixedly arranged on the surface of the rotating shaft, a torsional spring is sleeved on the side wall of the rotating shaft, the torsional spring is respectively clamped with the side wall of the first connecting rod and the side wall of the connecting seat, a strip-shaped groove is formed on the surface of the first connecting rod, the strip-shaped groove is a through groove, the first connecting rod and the strip-shaped groove are both in an inclined state, and a guide rod is slidably arranged in the strip-shaped groove.

[0013] As a preferred embodiment of the present application, the second connecting rod is an L-shaped connecting rod, the second connecting rod and the first connecting rod are both light rods, a positioning protrusion is fixedly arranged on the side wall of the second connecting rod, a strip-shaped through groove is symmetrically formed on both sides of the vertical rod, the positioning protrusion is slidably positioned in the strip-shaped through groove, the vertical rod is slidably arranged on the inner wall of the control box at the top, and is slidably arranged on the side wall of the horizontal plate at the bottom.

[0014] As a preferred embodiment of the present application, a mounting groove is formed on the surface of the horizontal plate, the mounting groove is a through groove, the diameter of the cavity in the mounting groove is larger than that of the outlet of the mounting groove, a hollow floating plate is slidably arranged in the mounting groove, the diameter of the hollow floating plate is larger than that of the outlet of the mounting groove, a clamping block is arranged on the top of the hollow floating plate, the surface of the clamping block is chamfered, and the clamping block is matched with the positioning hole.

[0015] As a preferred embodiment of the present application, the gasification tank top is provided with a discharge pipe, the discharge pipe penetrates through the gasification tank side wall and the thin-walled inner sleeve, the discharge pipe end is fixedly provided with an output pipe, the output pipe and the input pipe surface are connected and provided with a flange, the output pipe bottom is sleeved and provided with a support block, and the support block is fixedly arranged in the control box, and the gasification tank top is provided with a gas pressure gauge.

[0016] As a preferred embodiment of the present application, the discharge pipe outer wall is sleeved and provided with a blocking assembly, the blocking assembly is used for periodically blocking the discharge of natural gas, the blocking assembly includes a blocking box, the blocking box is fixedly arranged on both sides of the discharge pipe, a push rod is movably inserted at the bottom of the blocking box, the push rod movably penetrates through the control box, and the push rod end inside the control box is fixedly connected with a vertical rod.

[0017] As a preferred embodiment of the present application, the blocking box inside is vertically fixedly provided with a vertical baffle, the vertical baffle penetrates through both sides of the discharge pipe, a piston is movably arranged between the vertical baffles, the piston diameter is greater than the discharge pipe inner diameter, a reset spring is connected at the top of the piston and the blocking box inside, a first inclined block is fixedly arranged at the bottom of the piston, a second inclined block is arranged at the other end of the push rod, and the inclined surfaces of the first inclined block and the second inclined block are mutually matched.

[0018] As a preferred embodiment of the present application, the operating method steps of the LNG storage and distribution station gasification method are as follows:

[0019] Step one: first, the input pipe and the output pipe are installed into the reserved pipeline, then liquid natural gas is injected into the control box, the liquid natural gas enters the control box through the guide pipe, and enters the gasification tank through the transmission pipe at the bottom of the control box;

[0020] Step two: with the continuous injection of the liquefied natural gas in the control box and the transmission pipe, the liquid level of the liquefied natural gas continuously rises, when the liquid level of the liquefied natural gas rises to the surface of the horizontal plate, at this time, the hollow floating plate in the horizontal plate contacts the liquid level, with the continuous rising of the liquid level, the hollow floating plate is pushed to move upwards, and the whole hollow floating plate and the clamping block are pushed upwards;

[0021] Step three: when the liquid level of the natural gas moves to the surface of the floating ball, the floating ball is affected by the buoyancy, thereby driving the floating ball to move upwards, and the floating ball end is connected and provided with a second connecting rod, at this time, the second connecting rod and the first connecting rod begin to rotate counterclockwise around the rotation center, and the first connecting rod rotation center is connected and provided with a torsional spring, and the torsional spring facilitates the reset of the first connecting rod and the second connecting rod;

[0022] Step four: in the process of rotating the first connecting rod, the end of the first connecting rod is slidably provided with a guide rod, the guide rod slides in the strip-shaped groove, thereby pushing the guide rod and the plug rod to move downward, the plug rod moves downward to push the sealing plug at the end to move downward synchronously, thereby sealing the guide pipe, and after reaching a certain volume, the purpose of blocking the guide pipe from inputting liquefied natural gas is achieved;

[0023] Step five: in the process of rotating the second connecting rod, the position of the positioning protrusion on the surface of the second connecting rod changes, the positioning protrusion moves leftward as a whole, thereby causing the positioning protrusion to push the entire vertical rod and the positioning block to move leftward, when the positioning block moves leftward, the positioning block moves to the surface of the clamping block, first extrudes the clamping block to move downward, until the positioning hole contacts the clamping block, the clamping block is driven to move upward by buoyancy and is inserted into the positioning hole, and the locking operation on the state is completed;

[0024] Step six: after the vertical rod moves, the push rod is pushed to move leftward, the second inclined block in the push rod moves leftward synchronously, and the first inclined block is arranged on the surface of the second inclined block, at this time, the first inclined block is extruded by the reset spring and moves downward, the piston moves downward synchronously, the blocked discharge pipe is opened, and gaseous natural gas is conveniently discharged in the later period;

[0025] Step seven: the heating sheet is started, the thin-walled inner sleeve on the surface of the heating sheet is driven, thereby providing heat for the liquefied natural gas to become gaseous natural gas, the gas converted into gaseous natural gas is discharged through the discharge pipe, and the gas pressure can be observed in real time through the gas pressure gauge;

[0026] Step eight: as the operation is continuously performed, the content of the liquefied natural gas gradually decreases, the liquid level in the control box gradually decreases, when the liquid level leaves the float, the float and the second connecting rod are locked in the state under the operation of step five, until the liquid level moves to the bottom of the horizontal plate, at this time, the clamping block moves downward synchronously and is separated from the positioning hole, at this time, the first connecting rod and the second connecting rod start to reset, drive the sealing plug to open, and the piston reseals, so that liquefied natural gas can be automatically added when the liquid level is lower than a certain height.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] The present application, by being provided with a regulating unit, wherein the regulating unit is internally provided with a hollow floating plate and a floating ball, wherein the hollow floating plate is placed at the bottom of the floating ball, in the case that the regulating box is internally filled with liquid, the hollow floating plate and the floating ball are both moved upward, and the floating ball can seal the guide pipe, and the position of the hollow floating plate and the floating ball is locked, when the liquid in the regulating box is lowered, the floating ball is locked by the hollow floating plate, so that the initial position is driven to be in the locked state, until the liquid surface is moved below the hollow floating plate, at this time, the hollow floating plate is automatically moved downward, and the floating ball can be synchronously moved, at this time, the floating ball drives the sealing plug to be moved upward, so as to open the guide pipe, which is convenient for injecting liquid, and the liquefied natural gas can be automatically added when the liquid surface is below a certain height, and the use is more reliable.

[0029] The specific embodiments of the present application will be further described in detail below in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] In the drawings:

[0031] Figure 1 It is a bottom view of a LNG storage and distribution station gasification equipment;

[0032] Figure 2 It is a three-dimensional structure schematic view of a LNG storage and distribution station gasification equipment;

[0033] Figure 3 It is a sectional view of a blocking assembly of a LNG storage and distribution station gasification equipment;

[0034] Figure 4 It is a sectional view of a LNG storage and distribution station gasification equipment Figure 2 ;

[0035] Figure 5 It is an enlarged view of A of a LNG storage and distribution station gasification equipment Figure 4 ;

[0036] Figure 6 It is a sectional view of a regulating unit of a LNG storage and distribution station gasification equipment;

[0037] Figure 7 It is an enlarged view of B of a LNG storage and distribution station gasification equipment Figure 6 ;

[0038] Figure 8 It is an enlarged view of C of a LNG storage and distribution station gasification equipment Figure 6 ;

[0039] Figure 9 It is a sectional view of a LNG storage and distribution station gasification equipment Figure 8 .

[0040] In the drawings:

[0041] 100, support unit; 101, support plate; 1011, support leg; 1012, support frame;

[0042] 200, regulation unit; 201, regulation box; 2011, partition; 202, guide pipe; 2021, input pipe; 203, sealing plug; 2031, insertion rod; 2032, U-shaped frame; 2033, guide rod; 204, collar; 2041, top rod; 205, first connecting rod; 2051, strip-shaped groove; 2052, connecting seat; 206, second connecting rod; 2061, floating ball; 207, positioning protrusion; 2071, vertical rod; 2072, strip-shaped through groove; 2073, positioning block; 2074, positioning hole; 208, cross plate; 2081, mounting groove; 2082, hollow floating plate; 2083, clamping block;

[0043] 300, gasification unit; 301, gasification tank; 3011, transmission pipe; 3012, discharge pipe; 3013, output pipe; 302, thin-walled inner sleeve; 3021, heating sheet; 303, air pressure gauge;

[0044] 400, barrier assembly; 401, barrier box; 4011, vertical baffle; 402, piston; 4021, first inclined block; 4022, return spring; 403, push rod; 4031, second inclined block. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application.

[0046] Embodiment one:

[0047] As shown in Figures 1 to 9 , a LNG storage and distribution station gasification equipment, comprising a support unit 100 and a regulation unit 200 and a gasification unit 300 installed on the surface of the support unit,

[0048] The support unit 100 comprises a support plate 101, the top of the support plate 101 is provided with a support frame 1012, the top of the support frame 1012 is installed with the regulation unit 200 and the gasification unit 300;

[0049] The regulating unit 200 comprises a regulating box 201, the inside of the regulating box 201 is provided with a guide pipe 202, the inside of the guide pipe 202 is movably connected with a sealing plug 203, the top of the sealing plug 203 is provided with a plug rod 2031, the tail end of the plug rod 2031 movably penetrates the side wall of the guide pipe 202, the tail end of the plug rod 2031 is slidably connected with a first connecting rod 205, the tail end of the first connecting rod 205 is provided with a second connecting rod 206, the tail end of the second connecting rod 206 is provided with a floating ball 2061, the side wall of the second connecting rod 206 is slidably provided with a vertical rod 2071, the tail end of the vertical rod 2071 is provided with a positioning block 2073, the inside of the regulating box 201 is provided with a horizontal plate 208, and the inside of the horizontal plate 208 is provided with a hollow floating plate 2082; the gasification unit 300 comprises a gasification tank 301, the inside of the gasification tank 301 is fixedly and weldedly provided with a thin-wall inner sleeve 302, the thin-wall inner sleeve 302 and the gasification tank 301 form a cavity, and the cavity is provided with a heating sheet 3021, and the bottom of the gasification tank 301 is connected with the bottom of the regulating box 201 and is provided with a transmission pipe 3011.

[0050] By arranging the regulating unit, the inside of the regulating unit is provided with the hollow floating plate and the floating ball, the hollow floating plate is arranged at the bottom of the floating ball, in the case that the inside of the regulating box is filled with liquid, the hollow floating plate and the floating ball are both moved upward, the floating ball can seal the guide pipe, and the positions of the hollow floating plate and the floating ball are locked, when the liquid in the inside of the regulating box is lowered, the floating ball is locked by the hollow floating plate, so that the initial position is lowered and is still in the locked state, until the liquid surface is moved below the hollow floating plate, at this time, the hollow floating plate is automatically moved downward, and the floating ball can be synchronously moved, at this time, the floating ball drives the sealing plug to be moved upward, the guide pipe is opened, the liquid is conveniently injected, and it is ensured that the liquefied natural gas can be automatically added whenever the liquid surface is below a certain height, and the use is more reliable.

[0051] As shown in Figure 1 , Figure 2 and Figure 4 in the specific embodiment, the bottom of the supporting plate 101 is provided with four supporting legs 1011, the supporting legs 1011 are all made of metal, the bottom of the guide pipe 202 is arranged below the regulating box 201, the bottom of the guide pipe 202 is connected with an input pipe 2021, the diameter of the input pipe 2021 is greater than the diameter of the guide pipe 202, the height of the input pipe 2021 is located below the lower surface of the supporting plate 101, and the tail end of the guide pipe 202 is provided with a partition plate 2011. First, the input pipe 2021 and the output pipe 3013 are installed into the reserved pipeline, then the inside of the regulating box 201 is injected with liquid natural gas, the liquid natural gas enters the inside of the regulating box 201 through the guide pipe 202, and enters the inside of the gasification tank 301 through the transmission pipe 3011 at the bottom of the regulating box 201.

[0052] As shown in Figures 1 to 3As shown, further, the end of the insertion rod 2031 outside the guide tube 202 is fixedly provided with a U-shaped frame 2032, a guide rod 2033 is transversely arranged inside the U-shaped frame 2032, and a pair of top rods 2041 are symmetrically arranged at the bottom of the U-shaped frame 2032. The end of each pair of top rods 2041 is movably inserted into a sleeve ring 204, the sleeve ring 204 is fixedly arranged on the surface of the guide tube 202, and an extrusion spring is arranged in the inner cavity of the sleeve ring 204 and is connected with the end of the top rod 2041. The extrusion spring inside the sleeve ring 204 always pushes the top rod 2041 to have a tendency to move upward, which facilitates automatic resetting in the later stage.

[0053] Embodiment two:

[0054] The difference between the above embodiment and the present embodiment is:

[0055] As shown in Figure 6 and Figure 7 , a pair of connecting seats 2052 are fixedly arranged on the outer wall of the guide tube 202, a rotating shaft is movably arranged inside the connecting seat 2052, a first connecting rod 205 is fixedly arranged on the surface of the rotating shaft, a torsion spring is sleeved on the side wall of the rotating shaft, the torsion spring is respectively connected with the side wall of the first connecting rod 205 and the side wall of the connecting seat 2052, a strip-shaped groove 2051 is formed on the surface of the first connecting rod 205, the strip-shaped groove 2051 is a through groove, the first connecting rod 205 and the strip-shaped groove 2051 are both in an inclined state, and the guide rod 2033 is slidably arranged inside the strip-shaped groove 2051. When the natural gas liquid level moves to the surface of the floating ball 2061, the floating ball 2061 is affected by the buoyancy and moves upward, and the second connecting rod 206 is connected at the end of the floating ball 2061. At this time, the second connecting rod 206 and the first connecting rod 205 begin to rotate counterclockwise around the rotation center, and the torsion spring is connected at the rotation center of the first connecting rod 205, which facilitates the resetting of the first connecting rod 205 and the second connecting rod 206.

[0056] As shown in Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown in the specific embodiment, the second connecting rod 206 is an L-shaped connecting rod, and the second connecting rod 206 and the first connecting rod 205 are both light rods. The second connecting rod 206 is fixedly provided with a positioning protrusion 207 on the side wall. A strip-shaped through groove 2072 is symmetrically formed on both sides of a vertical rod 2071. The strip-shaped through groove 2072 is internally slidably positioned with the positioning protrusion 207. The vertical rod 2071 is slidably arranged in the inner wall of the control box 201 at the top. The vertical rod 2071 is slidably arranged in the side wall of the horizontal plate 208 at the bottom. The positioning block 2073 is attached to the upper surface of the horizontal plate 208. The positioning hole 2074 is formed in the bottom of the positioning block 2073. The mounting groove 2081 is formed in the surface of the horizontal plate 208. The mounting groove 2081 is a through groove. The diameter of the internal cavity of the mounting groove 2081 is greater than the diameter of the outlet of the mounting groove 2081. The hollow floating plate 2082 is slidably arranged in the mounting groove 2081. The diameter of the hollow floating plate 2082 is greater than the diameter of the outlet of the mounting groove 2081. The hollow floating plate 2082 is provided with a clamping block 2083 at the top. The surface of the clamping block 2083 is chamfered. The clamping block 2083 is adapted to the positioning hole 2074. In the process of rotating the second connecting rod 206, the position of the positioning protrusion 207 on the surface of the second connecting rod 206 changes. The positioning protrusion 207 as a whole moves to the left, thereby causing the positioning protrusion 207 to push the entire vertical rod 2071 and the positioning block 2073 to move to the left. When the positioning block 2073 moves to the left, the positioning block 2073 moves to the surface of the clamping block 2083. First, the clamping block 2083 is pressed to move downward until the positioning hole 2074 contacts the clamping block 2083. Then, the clamping block 2083 is driven to move upward by the buoyancy and is inserted into the positioning hole 2074, thereby completing the locking operation in this state.

[0057] Embodiment three:

[0058] Different from the above-mentioned embodiments and the present embodiment are:

[0059] As shown in Figure 1 , Figure 2 and Figure 4 , the gasification tank 301 is provided with a discharge pipe 3012 at the top. The discharge pipe 3012 penetrates the side wall of the gasification tank 301 and the internal cavity of the thin-walled inner sleeve 302. The discharge pipe 3012 is fixedly provided with an output pipe 3013 at the end. The surface of the output pipe 3013 and the input pipe 2021 is provided with a flange. The bottom of the output pipe 3013 is provided with a support block. The support block is fixedly arranged in the control box 201. The gasification tank 301 is provided with a gas pressure gauge 303 at the top. The heating sheet 3021 is started to drive the surface of the thin-walled inner sleeve 302, thereby providing heat for the liquid natural gas to become gaseous natural gas. The gas that has been converted into gaseous natural gas is discharged through the discharge pipe 3012. The gas pressure can be observed in real time through the gas pressure gauge 303.

[0060] As shown in Figure 2 andFigure 3 As shown in the specific embodiment, the outer wall of the discharge pipe 3012 is sleeved with a blocking assembly 400 for periodically blocking the discharge of natural gas, the blocking assembly 400 comprises blocking boxes 401 fixedly arranged on both sides of the discharge pipe 3012, a push rod 403 movably inserted into the bottom of the blocking box 401 and movably penetrating the control box 201, and the end of the push rod 403 inside the control box 201 is fixedly connected with the vertical rod 2071. A vertical baffle 4011 is vertically fixedly arranged inside the blocking box 401, the vertical baffle 4011 penetrates the two discharge pipes 3012, and a piston 402 is movably arranged between the vertical baffles 4011, the piston 402 has a diameter greater than the inner diameter of the discharge pipe 3012, a reset spring 4022 is arranged on the top of the piston 402 and is clamped with the inside of the blocking box 401, a first inclined block 4021 is fixedly arranged on the bottom of the piston 402, a second inclined block 4031 is arranged on the other end of the push rod 403, and the inclined surfaces of the first inclined block 4021 and the second inclined block 4031 are mutually attached. After the vertical rod 2071 moves, the push rod 403 is pushed to move leftward, the second inclined block 4031 inside the push rod 403 is synchronously moved leftward, and the first inclined block 4021 is arranged on the surface of the second inclined block 4031. At this time, the first inclined block 4021 is subjected to the extrusion action of the reset spring 4022, the first inclined block 4021 is moved downward, the piston 402 is synchronously moved downward, the blocked discharge pipe 3012 is opened, and the discharge of gaseous natural gas in the later stage is facilitated.

[0061] The operation method of the LNG storage and distribution station gasification method disclosed by the application comprises the following steps:

[0062] Step one: first, install the input pipe 2021 and the output pipe 3013 into the reserved pipe, then inject liquid natural gas into the inside of the control box 201, the liquid natural gas enters the inside of the control box 201 through the guide pipe 202, and enters the inside of the gasification tank 301 through the transmission pipe 3011 at the bottom of the control box 201;

[0063] Step two: with the continuous injection of the liquefied natural gas in the control box 201 and the transmission pipe 3011, the liquid level of the liquefied natural gas is continuously raised, when the liquid level of the liquefied natural gas rises to the surface of the horizontal plate 208, at this time, the hollow floating plate 2082 inside the horizontal plate 208 contacts the liquid level, with the continuous rising of the liquid level, the hollow floating plate 2082 is pushed to move upward, and the entire hollow floating plate 2082 and the clamping block 2083 are pushed upward;

[0064] Step three: when the natural gas liquid level moves to the surface of the floating ball 2061, the floating ball 2061 is affected by the buoyancy, so that the floating ball 2061 moves upward, and the end of the floating ball 2061 is connected with the second connecting rod 206, at this time the second connecting rod 206 and the first connecting rod 205 begin to rotate counterclockwise around the rotation center, and the first connecting rod 205 is connected with a torsional spring at the rotation center, which facilitates the resetting of the first connecting rod 205 and the second connecting rod 206;

[0065] Step four: in the process of rotating the first connecting rod 205, the end of the first connecting rod 205 is slidingly provided with a guide rod 2033, which slides in the strip-shaped groove 2051, thereby pushing the guide rod 2033 and the plug rod 2031 to move downward, the plug rod 2031 pushes the sealing plug 203 at the end to move downward synchronously, thereby sealing the guide pipe 202, and after reaching a certain volume, the purpose of blocking the input of liquefied natural gas into the guide pipe 202 is achieved;

[0066] Step five: in the process of rotating the second connecting rod 206, the position of the positioning protrusion 207 on the surface of the second connecting rod 206 changes, the positioning protrusion 207 moves left as a whole, thereby causing the positioning protrusion 207 to push the entire vertical rod 2071 and the positioning block 2073 to move left, when the positioning block 2073 moves left, the positioning block 2073 moves to the surface of the clamping block 2083, first extrudes the clamping block 2083 to move downward, until the positioning hole 2074 contacts the clamping block 2083, and then the clamping block 2083 is driven upward by the buoyancy and inserted into the positioning hole 2074, completing the locking operation in this state;

[0067] Step six: after the vertical rod 2071 moves, the push rod 403 is pushed to move left, and the second inclined block 4031 inside the push rod 403 moves left synchronously, and the first inclined block 4021 is lapped on the surface of the second inclined block 4031, at this time the first inclined block 4021 is extruded by the reset spring 4022, which drives the first inclined block 4021 to move downward, and the piston 402 moves downward synchronously, which opens the blocked discharge pipe 3012, facilitating the discharge of gaseous natural gas in the later stage;

[0068] Step seven: start the heating sheet 3021, which drives the thin-walled inner sleeve 302 on the surface through the heating sheet 3021, thereby providing heat for the conversion of liquid natural gas to gaseous natural gas, and the gas converted to gaseous natural gas is discharged through the discharge pipe 3012, and the gas pressure can be observed in real time through the pressure gauge 303;

[0069] Step eight: as the operation continues, the content of liquid natural gas gradually decreases, the liquid level inside the control box 201 gradually decreases, when the liquid level leaves the float ball 2061, the float ball 2061 and the second connecting rod 206 are locked in the state under the operation of step five, until the liquid level moves to the bottom of the horizontal plate 208, at this time the clamping block 2083 moves downward synchronously and separates from the positioning hole 2074, at this time the first connecting rod 205 and the second connecting rod 206 begin to reset, drive the sealing plug 203 to open, and the piston 402 reseals, ensuring that liquefied natural gas can be automatically added whenever the liquid level is below a certain height.

[0070] The implementation principle of the LNG storage and distribution station gasification method and the equipment thereof in this embodiment is as follows:

[0071] First, install the input pipe 2021 and the output pipe 3013 into the reserved pipeline, then inject liquid natural gas into the control box 201, the liquid natural gas enters the control box 201 through the guide pipe 202, and enters the gasification tank 301 inside through the transmission pipe 3011 at the bottom of the control box 201.

[0072] The liquefied natural gas inside the control box 201 and the transmission pipe 3011 is continuously injected, and the liquid level of the liquefied natural gas continuously rises, when the liquid level of the liquefied natural gas rises to the surface of the horizontal plate 208, at this time the hollow floating plate 2082 inside the horizontal plate 208 contacts the liquid level, and as the liquid level continuously rises, the hollow floating plate 2082 is pushed to move upward, and the entire hollow floating plate 2082 and the clamping block 2083 are pushed upward.

[0073] When the liquid level of the natural gas moves to the surface of the float ball 2061, the float ball 2061 is affected by the buoyancy and moves upward, and the second connecting rod 206 is connected at the end of the float ball 2061, at this time the second connecting rod 206 and the first connecting rod 205 begin to rotate counterclockwise around the rotation center, and the first connecting rod 205 is connected with a torsional spring at the rotation center, which facilitates the resetting of the first connecting rod 205 and the second connecting rod 206.

[0074] In the process of rotating the first connecting rod 205, the first connecting rod 205 is slidably provided with a guide rod 2033 at the end, the guide rod 2033 slides inside the strip-shaped groove 2051, thereby pushing the guide rod 2033 and the plug rod 2031 to move downward, the plug rod 2031 pushes the sealing plug 203 at the end to move downward synchronously, thereby sealing the guide pipe 202, and after a certain volume is reached, the purpose of blocking the input of liquefied natural gas into the guide pipe 202 is achieved.

[0075] In the process of rotating the second connecting rod 206, the position of the positioning protrusion 207 on the surface of the second connecting rod 206 changes, and the positioning protrusion 207 as a whole moves to the left, thereby causing the positioning protrusion 207 to push the entire vertical rod 2071 and the positioning block 2073 to move to the left. When the positioning block 2073 moves to the left, the positioning block 2073 moves to the surface of the clamping block 2083, first extrudes the clamping block 2083 to move downward, and after the positioning hole 2074 contacts the clamping block 2083, the clamping block 2083 is driven upward by the buoyancy and inserted into the inside of the positioning hole 2074, thereby completing the locking operation in this state.

[0076] After the vertical rod 2071 moves, the push rod 403 is pushed to move to the left, and the second inclined block 4031 inside the push rod 403 synchronously moves to the left, and the second inclined block 4031 surface is provided with the first inclined block 4021 in a lap joint manner. At this time, the first inclined block 4021 is subjected to the extrusion action of the return spring 4022, drives the first inclined block 4021 to move downward, and the piston 402 synchronously moves downward to open the blocked discharge pipe 3012, thereby facilitating the discharge of gaseous natural gas in the later period.

[0077] The heating sheet 3021 is started, the thin-walled inner sleeve 302 on the surface of the heating sheet 3021 is driven, thereby providing heat for the liquid natural gas to become gaseous natural gas. The gas that has been converted into gaseous natural gas is discharged through the discharge pipe 3012, and the gas pressure can be observed in real time through the gas pressure gauge 303.

[0078] With the continuous operation, the content of the liquid natural gas gradually decreases, and the liquid level in the control box 201 gradually decreases. When the liquid level moves away from the float ball 2061, the float ball 2061 and the second connecting rod 206 are in the locked state under the operation in step five, until the liquid level moves to the bottom of the horizontal plate 208. At this time, the clamping block 2083 synchronously moves downward and is separated from the positioning hole 2074. At this time, the first connecting rod 205 and the second connecting rod 206 begin to reset, drive the sealing plug 203 to open, and the piston 402 reseals, thereby ensuring that the liquefied natural gas can be automatically added when the liquid level is lower than a certain height.

Claims

1. An LNG storage and distribution station gasification equipment, comprising a support unit (100), and a regulation unit (200) and a gasification unit (300) installed on the surface of the support unit, characterized in that, the support unit (100) comprises a support plate (101), the top of the support plate (101) is provided with a support frame (1012), and the top of the support frame (1012) is installed with the regulation unit (200) and the gasification unit (300); the regulation unit (200) comprises a regulation box (201), the inside of the regulation box (201) is provided with a guide pipe (202), the inside of the guide pipe (202) is movably inserted with a sealing plug (203), the top of the sealing plug (203) is provided with a plug rod (2031), the tail end of the plug rod (2031) movably penetrates the side wall of the guide pipe (202), the tail end of the plug rod (2031) is slidably connected with a first connecting rod (205), the tail end of the first connecting rod (205) is provided with a second connecting rod (206), the tail end of the second connecting rod (206) is provided with a floating ball (2061), the side wall of the second connecting rod (206) is slidably provided with a vertical rod (2071), the tail end of the vertical rod (2071) is provided with a positioning block (2073), the inside of the regulation box (201) is provided with a horizontal plate (208), and the inside of the horizontal plate (208) is provided with a hollow floating plate (2082); the second connecting rod (206) is an L-shaped connecting rod, and the second connecting rod (206) and the first connecting rod (205) are both light rods, the side wall of the second connecting rod (206) is fixedly provided with a positioning protrusion (207), the two sides of the vertical rod (2071) are symmetrically provided with a strip-shaped through slot (2072), the strip-shaped through slot (2072) is slidably positioned with the positioning protrusion (207), the top of the vertical rod (2071) is slidably arranged on the inner wall of the regulation box (201), the bottom of the vertical rod (2071) is slidably arranged on the side wall of the horizontal plate (208), and the positioning block (2073) is attached to the upper surface of the horizontal plate (208), and the bottom of the positioning block (2073) is provided with a positioning hole (2074). The gasification unit (300) includes a gasification tank (301), a thin-walled inner sleeve (302) is fixedly welded inside the gasification tank (301), the thin-walled inner sleeve (302) and the gasification tank (301) form a cavity, a heating sheet (3021) is arranged inside the cavity, a transmission pipe (3011) is arranged at the bottom of the gasification tank (301) and connected with the bottom of the control box (201), and a discharge pipe (3012) is arranged at the top of the gasification tank (301); a blocking assembly (400) is sleeved and arranged on the outer wall of the discharge pipe (3012), the blocking assembly (400) includes a blocking box (401), the blocking box (401) is fixedly arranged on both sides of the discharge pipe (3012), a push rod (403) is movably inserted at the bottom of the blocking box (401), the push rod (403) movably penetrates the control box (201), and the tail end of the push rod (403) on the inner side of the control box (201) is fixedly connected with a vertical rod (2071).

2. The LNG dispensing station vaporization apparatus according to claim 1, wherein, The bottom of the support plate (101) is provided with four support legs (1011), the support legs (1011) are all made of metal, the bottom of the guide pipe (202) is arranged below the control box (201), and the bottom of the guide pipe (202) is connected with an input pipe (2021), the height of the input pipe (2021) is located below the lower surface of the support plate (101), and the tail end of the guide pipe (202) is provided with a partition plate (2011).

3. The LNG storage and dispensing station vaporization apparatus of claim 1, wherein, The tail end of the plug rod (2031) on the outer side of the guide pipe (202) is fixedly provided with a U-shaped frame (2032), the U-shaped frame (2032) is transversely provided with a guide rod (2033) inside, a pair of top rods (2041) are symmetrically arranged at the bottom of the U-shaped frame (2032), the tail end of each pair of top rods (2041) is movably inserted into a sleeve ring (204), and the sleeve ring (204) is fixedly arranged on the surface of the guide pipe (202); an extrusion spring is arranged in the sleeve ring (204) and is clamped with the tail end of the top rod (2041).

4. The LNG dispensing station vaporization apparatus of claim 1, wherein, The outer wall of the guide pipe (202) is fixedly provided with a pair of connecting seats (2052), a rotating shaft is movably arranged in the connecting seat (2052), a first connecting rod (205) is fixedly arranged on the surface of the rotating shaft, a torsional spring is sleeved and arranged on the side wall of the rotating shaft, the torsional spring is clamped with the side wall of the first connecting rod (205) and the side wall of the connecting seat (2052), a strip-shaped groove (2051) is formed in the surface of the first connecting rod (205), the strip-shaped groove (2051) is a through groove, the first connecting rod (205) and the strip-shaped groove (2051) are both inclined, and the guide rod (2033) is slidably arranged in the strip-shaped groove (2051).

5. The LNG dispensing station vaporization apparatus of claim 1, wherein, The horizontal plate (208) is provided with a mounting groove (2081) on the surface, the mounting groove (2081) is a through groove, the internal cavity diameter of the mounting groove (2081) is greater than the outlet diameter of the mounting groove (2081), the hollow floating plate (2082) is slidably arranged in the mounting groove (2081), the diameter of the hollow floating plate (2082) is greater than the outlet diameter of the mounting groove (2081), the top of the hollow floating plate (2082) is provided with a clamping block (2083), the surface of the clamping block (2083) is chamfered, and the clamping block (2083) is matched with the positioning hole (2074).

6. The LNG dispensing station vaporization apparatus of claim 1, wherein, The gasification tank (301) is provided with a discharge pipe (3012) at the top, the discharge pipe (3012) penetrates through the side wall of the gasification tank (301) and the inside of the thin-walled inner sleeve (302), the discharge pipe (3012) is fixedly provided with an output pipe (3013) at the end, the output pipe (3013) and the input pipe (2021) are provided with flanges on the surfaces, the output pipe (3013) is provided with a support block at the bottom, and the support block is fixedly arranged in the inside of the control box (201), and the gasification tank (301) is provided with a gas pressure gauge (303) at the top.

7. The LNG dispensing station vaporization apparatus according to claim 1, wherein, The vertical baffle (4011) is vertically and fixedly arranged in the inside of the blocking box (401), the vertical baffle (4011) penetrates through the two discharge pipes (3012), the piston (402) is movably arranged between the vertical baffles (4011), the diameter of the piston (402) is greater than the inner diameter of the discharge pipe (3012), the piston (402) is provided with a reset spring (4022) at the top and is clamped in the inside of the blocking box (401), the first inclined block (4021) is fixedly arranged at the bottom of the piston (402), the second inclined block (4031) is arranged at the other end of the push rod (403), and the inclined surfaces of the first inclined block (4021) and the second inclined block (4031) are matched with each other.

8. A method of vaporizing LNG at an LNG distribution station, the method comprising: The LNG storage and distribution station gasification equipment and the LNG storage and distribution station gasification method are applied to the operating method steps of the LNG storage and distribution station gasification method as claimed in any one of claims 1-7. Step one: firstly, the input pipe (2021) and the output pipe (3013) are installed in the reserved pipeline, then liquid natural gas is injected into the inside of the control box (201), the liquid natural gas enters the inside of the control box (201) through the guide pipe (202), and enters the inside of the gasification tank (301) through the transmission pipe (3011) at the bottom of the control box (201); Step two: with the continuous injection of the liquefied natural gas in the inside of the control box (201) and the transmission pipe (3011), the liquid level of the liquefied natural gas is continuously rising, when the liquid level of the liquefied natural gas rises to the surface of the horizontal plate (208), at this time, the hollow floating plate (2082) in the inside of the horizontal plate (208) contacts the liquid level, with the continuous rising of the liquid level, the hollow floating plate (2082) is pushed to move upwards, and the entire hollow floating plate (2082) and the clamping block (2083) are pushed upwards. Step three: when the natural gas liquid level moves to the surface of the floating ball (2061), the floating ball (2061) is affected by the buoyancy, thereby driving the floating ball (2061) to move upwards, and the end of the floating ball (2061) is connected with the second connecting rod (206), at this time the second connecting rod (206) and the first connecting rod (205) begin to rotate counterclockwise around the rotation center, and the first connecting rod (205) is connected with a torsional spring at the rotation center, which facilitates the resetting of the first connecting rod (205) and the second connecting rod (206); Step four: in the process of rotating the first connecting rod (205), the end of the first connecting rod (205) is slidably provided with a guide rod (2033), which slides in the strip-shaped groove (2051), thereby pushing the guide rod (2033) and the plug rod (2031) to move downwards, the plug rod (2031) pushes the sealing plug (203) at the end to move downwards synchronously, thereby sealing the guide pipe (202), and after reaching a certain volume, the purpose of blocking the input of liquefied natural gas into the guide pipe (202) is achieved; Step five: in the process of rotating the second connecting rod (206), the position of the positioning protrusion (207) on the surface of the second connecting rod (206) changes, and the positioning protrusion (207) moves left as a whole, thereby causing the positioning protrusion (207) to push the entire vertical rod (2071) and the positioning block (2073) to move left, when the positioning block (2073) moves left, the positioning block (2073) moves to the surface of the clamping block (2083) and first squeezes the clamping block (2083) to move downwards, until the positioning hole (2074) contacts the clamping block (2083), the clamping block (2083) is driven upwards by the buoyancy and is inserted into the positioning hole (2074); Step six: after the vertical rod (2071) moves, the push rod (403) is pushed to move left, and the second inclined block (4031) in the push rod (403) moves left synchronously, and the first inclined block (4021) is connected on the surface of the second inclined block (4031), at this time the first inclined block (4021) is squeezed by the reset spring (4022) and moves downwards, the piston (402) moves downwards synchronously, and the blocked discharge pipe (3012) is opened, facilitating the discharge of gaseous natural gas in the later stage; Step seven: start the heating sheet (3021), drive the thin-walled inner sleeve (302) on the surface of the heating sheet (3021), thereby providing heat for the conversion of liquid natural gas to gaseous natural gas, and the gas converted to gaseous natural gas is discharged through the discharge pipe (3012), and the gas pressure can be observed in real time through the pressure gauge (303). Step eight: with the operation of the continuous, the content of liquid natural gas gradually less, the liquid level in the control box (201) gradually decreased, when the liquid level away from the float ball (2061), the float ball (2061) and the second connecting rod (206) in step five under the operation of the lock state, until the liquid level to the bottom of the horizontal plate (208), at this time the block (2083) synchronous downward movement, with the positioning hole (2074) separation, at this time the first connecting rod (205) and the second connecting rod (206) begin to reset, drive the sealing plug (203) open, while the piston (402) resealing, ensure that whenever the liquid level below a certain height, can automatically add liquefied natural gas.

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