Emergency shutdown safety interlocking device for boiler car

Abstract

The invention relates to the technical field of boiler cars, and discloses a boiler car emergency shutdown safety interlocking device which comprises a supply pipe used for supplying fuel, a storage tank arranged on the supply pipe and used for storing the fuel in the storage tank, wherein the interior of the storage tank is divided into a high-pressure storage area and a temporary storage area, the high-pressure storage area is filled with carbon dioxide, and the carbon dioxide in the high-pressure storage area can flow into the temporary storage area; and the piston pushing assembly is arranged in the supply pipe. The emergency shutdown safety interlocking device of the boiler car aims at solving the problems that an existing emergency shutdown safety interlocking device of the boiler car is difficult to stop combustion of residual fuel in a pipeline and a boiler quickly, and boiler dry burning and subsequent serious safety accidents cannot be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler trucks, and specifically to an emergency shutdown safety interlock device for boiler trucks. Background Art

[0002] During the operation of a boiler, emergency shutdowns often occur. When an emergency shutdown instruction is triggered, existing safety interlock devices will initiate a series of operations to ensure the safety of the boiler. Among them, cutting off the fuel supply and replenishing the water volume in the boiler are key steps. In terms of cutting off the fuel supply, the safety interlock device will act quickly to close the fuel valve and prevent new fuel from entering the boiler.

[0003] However, after most of the fuel is cut off, the remaining fuel in the pipeline and the boiler will not stop burning immediately. This remaining fuel will continue to burn for some time. If not dealt with in a timely manner, it is very likely to cause the boiler to dry burn, thereby triggering serious safety accidents. Therefore, an emergency shutdown safety interlock device for boiler trucks is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the existing emergency shutdown safety interlock device for boiler trucks is difficult to quickly terminate the combustion of the remaining fuel in the pipeline and the boiler, and cannot effectively avoid boiler dry burning and subsequent serious safety accidents, and to propose an emergency shutdown safety interlock device for boiler trucks.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] An emergency shutdown safety interlock device for a boiler truck, including a supply pipe for supplying fuel, one end of which is connected to a fuel supply system, and the other end is connected to a boiler, and further includes:

[0007] A storage tank, the storage tank is arranged on the supply pipe, and the storage tank is divided into a high-pressure storage area and a temporary storage area, and carbon dioxide is filled in the high-pressure storage area, and the carbon dioxide in the high-pressure storage area can flow into the temporary storage area;

[0008] A piston pushing assembly, the piston pushing assembly is arranged in the supply pipe;

[0009] A discharge assembly, the discharge assembly is arranged on the storage tank, and the discharge assembly is interconnected with the temporary storage area of the storage tank and the supply pipe;

[0010] A connection assembly, the connection assembly is arranged in the storage tank and is connected to the piston pushing assembly. When the fuel supply is stopped, the piston pushing assembly drives the connection assembly to communicate with the discharge assembly, so as to introduce the carbon dioxide in the temporary storage area into the boiler for fuel cutoff and emergency shutdown.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, a partition is fixedly installed inside the storage tank, and the partition is used to divide the internal area of the storage tank into a high-pressure storage area and a temporary storage area. A pressure reducing valve is also provided on the partition. High-pressure carbon dioxide is filled in the high-pressure storage area of the storage tank, and the high-pressure carbon dioxide in the high-pressure storage area of the storage tank flows into the temporary storage area of the storage tank through the pressure reducing valve.

[0013] Furthermore, a gas filling pipe is fixedly installed on the outside of the storage tank, and one end of the gas filling pipe penetrates through and extends into the high-pressure storage area of the storage tank. A first one-way valve is also provided on the outside of the gas filling pipe. Carbon dioxide is added to the high-pressure storage area of the storage tank through the gas filling pipe and the first one-way valve. A pressure gauge communicating with the high-pressure storage area is also provided on the storage tank.

[0014] Furthermore, the piston pushing assembly includes:

[0015] A first fixing ring fixedly installed inside the supply pipe;

[0016] A pressing air intake member disposed inside the first fixing ring;

[0017] A pushing member disposed at the end of the pressing air intake member;

[0018] An air pipe, one end of which penetrates through the first fixing ring and communicates with the pressing air intake member, and the other end of which communicates with the connecting assembly. When supplying fuel, the pushing member drives the pressing air intake member to no longer communicate the connecting assembly with the discharging assembly through the air pipe, so as to supply gas normally.

[0019] Furthermore, the pressing air intake member includes:

[0020] A first disc fixedly installed inside the first fixing ring, and a plurality of circular holes are formed on the surface of the first disc and are distributed at equal intervals in a ring shape;

[0021] A sealing rod body disposed inside the circular hole, and the number and distribution positions of the sealing rod bodies are adapted to the circular holes;

[0022] A sealing ring, one side surface of which is fixedly connected to one end of the sealing rod body, and the sealing ring blocks the sealing circular hole when contacting the first disc;

[0023] A connecting rod, one end of the connecting rod is fixedly connected to the other end of the sealing rod body, and the number and distribution position of the connecting rods are adapted to the sealing rod body;

[0024] A moving disk, the moving disk is fixedly installed on the other side end of the connecting rod.

[0025] Furthermore, a sealing rubber sleeve is sleeved on the outer side of the sealing rod body, wherein the sealing rubber sleeve is in close contact with the inner wall of the circular hole. The diameter of the sealing rod body is larger than that of the connecting rod. The moving disk is in contact with the inner wall of the supply pipe and displaces along the length direction of the supply pipe. A fourth one-way valve is arranged on the surface of the moving disk.

[0026] Furthermore, the jacking member includes:

[0027] A second disk, the second disk is fixedly installed inside the supply pipe, and a second one-way valve is arranged on the surface of the second disk;

[0028] A first sleeve, the first sleeve is fixedly installed on the surface of the second disk close to the sealing ring;

[0029] An elastic member, one end of the elastic member is fixedly installed inside the first sleeve, and a piston is fixedly installed at the other end;

[0030] A first sleeve rod, one end of the first sleeve rod is fixedly connected to the surface of the piston, and the other end of the first sleeve rod passes through and extends to the outside of the first sleeve. The end of the first sleeve rod far from the piston is fixedly connected to the sealing ring;

[0031] A connecting pipe, one end of the connecting pipe passes through the second disk and is communicated with the first sleeve, and the other end of the connecting pipe passes through the supply pipe and is communicated with the storage tank.

[0032] Furthermore, the discharge assembly includes:

[0033] A discharge pipe, one end of the discharge pipe passes through the storage tank and is communicated with the temporary storage area of the storage tank. A third one-way valve is also arranged on the discharge pipe;

[0034] A hollow ring, the hollow ring is fixedly installed on the outer side of the supply pipe. There is a gas release area inside the hollow ring. One end of the discharge pipe far from the storage tank is communicated with the gas release area of the hollow ring;

[0035] A communicating pipe, one end of the communicating pipe is communicated with the gas release area of the hollow ring, and the other end passes through and extends to the inside of the supply pipe. The number of the communicating pipes is several and they are annularly and equidistantly distributed around the axis of the supply pipe.

[0036] Further, the connecting component includes:

[0037] A second sleeve, which is fixedly installed in the temporary storage area of the storage tank, and the other end of the connecting pipe communicates with the second sleeve;

[0038] A piston driving rod, one end of which is arranged inside the second sleeve and is in contact with the inner wall of the second sleeve, and the other end of the piston driving rod penetrates and extends to the outside of the second sleeve;

[0039] Sealing columns, which are fixedly installed in the temporary storage area of the storage tank, and the number of the sealing columns is several and they are annularly and equidistantly distributed around the axis of the storage tank;

[0040] A sealing plate, which is fixedly installed on one end of the piston driving rod on the side outside the second sleeve;

[0041] Sealing holes, which are opened on the surface of the sealing plate, and the number and distribution positions of the sealing holes are in one-to-one correspondence with the sealing columns.

[0042] Further, the diameter of the sealing hole is adapted to the outer diameter of the sealing column, and a pressure sensor is fixedly installed in the temporary storage area of the storage tank.

[0043] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0044] In the storage tank of the present invention, there are separated a high-pressure storage area and a temporary storage area. The high-pressure storage area is filled with carbon dioxide, and the carbon dioxide can flow into the temporary storage area. During normal operation, the device does not affect the normal supply of fuel. When an emergency furnace shutdown instruction is triggered and the fuel supply needs to be stopped, the piston pushing component starts to function, and can drive the connecting component to communicate with the discharging component. The carbon dioxide in the temporary storage area will be introduced into the boiler. On the one hand, the introduction of carbon dioxide can quickly dilute the oxygen concentration around the remaining fuel in the boiler, so that the remaining fuel cannot continue to burn due to lack of oxygen, thus quickly achieving fuel cut-off and avoiding the continuous burning of the remaining fuel. On the other hand, carbon dioxide itself has a certain temperature-lowering effect. Introducing it into the boiler can reduce the temperature of the boiler, effectively prevent the boiler from dry burning, greatly reduce the risk of serious safety accidents such as boiler damage and explosion, and ensure the safety of the boiler truck operation. Description of the Drawings

[0045] Figure 1 It is a schematic diagram of the overall connection structure of the present invention;

[0046] Figure 2 It is a schematic diagram of the connection structure between the supply pipe and the piston pushing component of the present invention;

[0047] Figure 3 Schematic connection structure diagram of the piston pushing assembly of the present invention;

[0048] Figure 4 Schematic connection structure diagram of the pressing air intake member of the present invention;

[0049] Figure 5 Schematic exploded connection structure diagram of the circular hole and the sealing rod body of the present invention;

[0050] Figure 6 Schematic connection structure diagram of the pushing member of the present invention;

[0051] Figure 7 Schematic connection structure diagram of the pushing member and a partial communication assembly of the present invention.

[0052] In the figure: 1, supply pipe; 2, storage tank; 3, piston pushing assembly; 31, first fixing ring; 32, pressing air intake member; 321, first disc; 322, circular hole; 323, sealing rod body; 324, sealing ring; 325, connecting rod; 326, moving disc; 33, pushing member; 331, second disc; 332, first sleeve; 333, elastic member; 334, piston; 335, first sleeve rod; 336, connecting pipe; 337, second one-way valve; 34, air pipe; 4, discharge assembly; 41, discharge pipe; 42, third one-way valve; 43, hollow ring; 44, communicating pipe; 5, communication assembly; 51, second sleeve; 52, piston driving rod; 53, sealing column; 54, sealing plate; 55, sealing hole; 6, partition board; 7, pressure reducing valve; 8, gas filling pipe; 9, first one-way valve; 10, pressure gauge; 11, fourth one-way valve; 12, air pressure sensor. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0054] Combined with Figures 1-7 As shown, an emergency shutdown safety interlock device for a boiler truck of the present invention includes a supply pipe 1 for supplying fuel, one end of the supply pipe 1 is communicated with a fuel supply system, and the other end is communicated with a boiler, and further includes:

[0055] A storage tank 2, the storage tank 2 is arranged on the supply pipe 1, and the storage tank 2 is divided into a high-pressure storage area and a temporary storage area, and carbon dioxide is filled in the high-pressure storage area, and the carbon dioxide in the high-pressure storage area can flow into the temporary storage area;

[0056] The piston pushing component 3 is arranged inside the supply pipe 1;

[0057] The discharging component 4 is arranged on the storage tank 2, wherein the discharging component 4 is communicated with the temporary storage area of the storage tank 2 and the supply pipe 1;

[0058] The connecting component 5 is arranged inside the storage tank 2 and is connected with the piston pushing component 3. When fuel supply is stopped, the piston pushing component 3 drives the connecting component 5 to be communicated with the discharging component 4, so as to introduce the carbon dioxide in the temporary storage area into the boiler for fuel cut-off and emergency boiler shutdown.

[0059] When the boiler truck is operating normally, one end of the supply pipe 1 is communicated with the fuel supply system, and the other end is communicated with the boiler. The fuel is continuously and stably transported into the boiler through the supply pipe 1 for combustion. The inside of the storage tank 2 is divided into a high-pressure storage area and a temporary storage area. The high-pressure storage area is filled with carbon dioxide, but the high-pressure storage area and the temporary storage area are in a relatively isolated state, and the carbon dioxide will not flow into the temporary storage area. The discharging component 4 is arranged on the storage tank 2 and is communicated with the temporary storage area of the storage tank 2 and the supply pipe 1. However, since the connecting component 5 is not communicated with the discharging component 4, the carbon dioxide will not enter the supply pipe 1 and the boiler. When the boiler truck triggers an emergency boiler shutdown instruction and fuel supply needs to be stopped, the piston pushing component 3 starts to act. The piston pushing component 3 drives the connecting component 5 to move, so that the connecting component 5 is communicated with the discharging component 4. The carbon dioxide in the high-pressure storage area enters the temporary storage area through the connecting component 5, then flows into the supply pipe 1 through the discharging component 4, and finally is introduced into the boiler. On the one hand, the carbon dioxide introduced into the boiler will dilute the oxygen concentration around the remaining fuel in the boiler, making the remaining fuel unable to continue burning due to lack of oxygen, so as to achieve fuel cut-off; on the other hand, carbon dioxide has a certain cooling effect, which can reduce the boiler temperature and effectively prevent the boiler from dry burning, thus completing the emergency boiler shutdown operation and ensuring the safe operation of the boiler truck. When supplying fuel, it flows into the boiler in the direction indicated by the Figure 1 arrow.

[0060] In a preferred embodiment of the present invention, it can be further configured as: as Figure 2As shown in the figure; a partition 6 is fixedly installed inside the storage tank 2. The partition 6 is used to divide the internal area of the storage tank 2 into a high-pressure storage area and a temporary storage area. A pressure reducing valve 7 is also provided on the partition 6. High-pressure carbon dioxide is filled in the high-pressure storage area of the storage tank 2. The high-pressure carbon dioxide in the high-pressure storage area of the storage tank 2 flows into the temporary storage area of the storage tank 2 through the pressure reducing valve 7. The partition 6 divides the internal area of the storage tank 2 into a high-pressure storage area and a temporary storage area. High-pressure carbon dioxide is filled in the high-pressure storage area of the storage tank 2, that is, above the partition 6. However, since the pressure reducing valve 7 provided on the partition 6 is in a closed state, the high-pressure carbon dioxide in the high-pressure storage area will not flow into the temporary storage area.

[0061] In a preferred embodiment of the present invention, it can be further configured as follows: As Figure 1 shown in the figure; an air inlet pipe 8 is fixedly installed on the outer side of the storage tank 2, and one end of the air inlet pipe 8 penetrates and extends into the high-pressure storage area of the storage tank 2. A first one-way valve 9 is also provided on the outer side of the air inlet pipe 8. Carbon dioxide is added to the high-pressure storage area of the storage tank 2 through the air inlet pipe 8 and the first one-way valve 9. A pressure gauge 10 communicating with the high-pressure storage area is also provided on the storage tank 2. When it is necessary to add carbon dioxide to the high-pressure storage area of the storage tank 2, the operator can operate through the air inlet pipe 8. The first one-way valve 9 only allows carbon dioxide to flow from the air inlet pipe 8 into the high-pressure storage area, preventing the carbon dioxide in the high-pressure storage area from flowing back. During the addition process, the pressure gauge 10 monitors the pressure in the high-pressure storage area in real time, so that the operator can accurately control the addition amount and ensure that an appropriate carbon dioxide pressure is maintained in the high-pressure storage area.

[0062] In a preferred embodiment of the present invention, it can be further configured as follows: As Figure 2 、 Figure 3 shown in the figure; the piston pushing assembly 3 includes:

[0063] A first fixing ring 31, and the first fixing ring 31 is fixedly installed inside the supply pipe 1;

[0064] A pressing air intake member 32, and the pressing air intake member 32 is arranged inside the first fixing ring 31;

[0065] A pushing member 33, and the pushing member 33 is arranged at the end of the pressing air intake member 32;

[0066] The air pipe 34, one end of the air pipe 34 penetrates through the first fixing ring 31 and is in communication with the pressing air inlet member 32. The other end of the air pipe 34 is in communication with the communication component 5. When supplying fuel, the pushing member 33 drives the pressing air inlet member 32 so that the communication component 5 and the discharge component 4 are no longer in communication through the air pipe 34, so as to supply gas normally. During the process of supplying fuel, the pushing member 33 is in a specific position, which drives the pressing air inlet member 32 to be in a state where the communication component 5 and the discharge component 4 are in communication, so that the fuel can be normally transported into the boiler through the supply pipe 1, ensuring that the fuel supply during the normal operation of the boiler truck is not disturbed.

[0067] In a preferred embodiment of the present invention, it can be further configured as: as Figure 4 、 Figure 5 shown; the pressing air inlet member 32 includes:

[0068] The first disc 321 is fixedly installed inside the first fixing ring 31. A plurality of circular holes 322 are formed on the surface of the first disc 321 and are distributed at equal intervals in a ring shape;

[0069] The sealing rod body 323 is arranged inside the circular hole 322. The number and distribution positions of the sealing rod bodies 323 are adapted to the circular holes 322;

[0070] One side surface of the sealing ring 324 is fixedly connected to one end of the sealing rod body 323. When the sealing ring 324 contacts the first disc 321, it blocks and seals the circular hole 322;

[0071] One end of the connecting rod 325 is fixedly connected to the other end of the sealing rod body 323. The number and distribution positions of the connecting rods 325 are adapted to the sealing rod bodies 323;

[0072] The movable disk 326 is fixedly installed at the other end of the connecting rod 325. When fuel is supplied, the movable disk 326 and the connecting rod 325 drive the sealing rod body 323 to displace within the circular hole 322, causing the connecting rod 325 to move into the circular hole 322. At this time, the sealing ring 324 no longer makes close contact with the surface of the first disk 321, and the circular hole 322 is exposed. Fuel can pass through the circular hole 322 over the first disk 321 and be transmitted to the next position, ensuring the normal supply of fuel to the boiler. At the same time, since the jacking member 33 drives the pressing air intake member 32 to be in a specific state at this time, the communication component 5 is in communication with the discharge component 4, ensuring that the fuel supply process is not interfered. It should also be noted that a spacer column is fixedly installed on the surface of the movable disk 326 close to the first disk 321. The purpose of setting the spacer column is to ensure that the movable disk 326 does not fit together with the first disk 321 when fuel is supplied, guaranteeing the normal supply of fuel.

[0073] In a preferred embodiment of the present invention, it can be further configured as: as Figure 4 、 Figure 5 shown; a sealing rubber sleeve is sleeved outside the sealing rod body 323, where the sealing rubber sleeve makes close contact with the inner wall of the circular hole 322. The diameter of the sealing rod body 323 is larger than the diameter of the connecting rod 325. The movable disk 326 is in contact with the inner wall of the supply pipe 1 and displaces along the length direction of the supply pipe 1. A fourth one-way valve 11 is provided on the surface of the movable disk 326. During the fuel supply process, while the fuel pushes the movable disk 326, it can enter between the first disk 321 and the movable disk 326 through the fourth one-way valve 11. Since the connecting rod 325 is located in the circular hole 322 at this time, that is, there is a gap between the connecting rod 325 and the circular hole 322, the sealing ring 324 no longer makes contact with the surface of the first disk 321. At this time, fuel can pass through the circular hole 322 through the first disk 321 and be transmitted to the side away from the movable disk 326. The provision of the sealing rubber sleeve makes the sealing between the sealing rod body 323 and the circular hole 322 tighter.

[0074] In a preferred embodiment of the present invention, it can be further configured as: as Figure 6 、 Figure 7 shown; the jacking member 33 includes:

[0075] A second disk 331, which is fixedly installed inside the supply pipe 1, and a second one-way valve 337 is provided on the surface of the second disk 331;

[0076] A first sleeve 332, which is fixedly installed on the surface of the second disk 331 close to the sealing ring 324;

[0077] The elastic member 333, one end of the elastic member 333 is fixedly installed inside the first sleeve 332, and a piston 334 is fixedly installed at the other end;

[0078] The first sleeve rod 335, one end of the first sleeve rod 335 is fixedly connected to the surface of the piston 334, and the other end of the first sleeve rod 335 penetrates and extends to the outside of the first sleeve 332, and the end of the first sleeve rod 335 away from the piston 334 is fixedly connected to the sealing ring 324;

[0079] The connecting pipe 336, one end of the connecting pipe 336 penetrates the second disc 331 and communicates with the first sleeve 332, and the other end of the connecting pipe 336 penetrates the supply pipe 1 and communicates with the storage tank 2. The first disc 321 is located between the second disc 331 and the moving disc 326. When the sealing ring 324 moves, it can drive the first sleeve rod 335 to move inside the first sleeve 332, so that the gas in the first sleeve 332 is output through the connecting pipe 336 by the piston 334. At the same time, the fuel can flow through the second one-way valve 337 to the side away from the sealing ring 324 and finally flow into the boiler. The elastic member 333 is preferably a helical spring.

[0080] In a preferred embodiment of the present invention, it can be further configured as: as Figure 1 、 Figure 2 shown; The discharge assembly 4 includes:

[0081] The discharge pipe 41, one end of the discharge pipe 41 penetrates the storage tank 2 and communicates with the temporary storage area of the storage tank 2, and a third one-way valve 42 is also provided on the discharge pipe 41;

[0082] The hollow ring 43, the hollow ring 43 is fixedly installed on the outside of the supply pipe 1, and a gas release area is provided inside the hollow ring 43. The end of the discharge pipe 41 away from the storage tank 2 communicates with the gas release area of the hollow ring 43;

[0083] The connecting pipe 44, one end of the connecting pipe 44 communicates with the gas release area of the hollow ring 43, and the other end penetrates and extends to the inside of the supply pipe 1. The number of the connecting pipes 44 is set to be several and is annularly and equidistantly distributed around the axis of the supply pipe 1. The carbon dioxide in the high-pressure storage area flows through the pressure reducing valve 7 to the temporary storage area, then passes through the discharge pipe 41 and the third one-way valve 42, enters the gas release area of the hollow ring 43, and then flows into the inside of the supply pipe 1 through several annularly and equidistantly distributed connecting pipes 44, and finally is introduced into the boiler. The carbon dioxide introduced into the boiler will, on the one hand, dilute the oxygen concentration around the remaining fuel in the boiler, so that the remaining fuel cannot continue to burn due to lack of oxygen, realizing fuel cut-off.

[0084] In a preferred embodiment of the present invention, it can be further configured as follows: As Figure 2 , Figure 7 shown; the connected component 5 includes:

[0085] A second sleeve 51, the second sleeve 51 is fixedly installed in the temporary storage area of the storage tank 2, and the other end of the connecting pipe 336 communicates with the second sleeve 51;

[0086] A piston driving rod 52, one end of the piston driving rod 52 is arranged inside the second sleeve 51 and is in contact with the inner wall of the second sleeve 51, and the other end of the piston driving rod 52 penetrates and extends to the outside of the second sleeve 51;

[0087] A sealing column 53, the sealing column 53 is fixedly installed in the temporary storage area of the storage tank 2, and the number of the sealing columns 53 is set to be several and is evenly distributed in a ring shape according to the axis of the storage tank 2;

[0088] A sealing plate 54, the sealing plate 54 is fixedly installed on one side end of the piston driving rod 52 outside the second sleeve 51;

[0089] Sealing holes 55 are formed on the surface of the sealing plate 54, and the number and distribution positions of the sealing holes 55 are in one-to-one correspondence with the sealing columns 53. The high-pressure carbon dioxide in the high-pressure storage area of the storage tank 2 flows to the temporary storage area of the storage tank 2 through the pressure reducing valve 7. At this time, the carbon dioxide will be temporarily stored above the sealing plate 54. Since the gas in the first sleeve 332 flows from the connecting pipe 336 to the inside of the second sleeve 51, the gas can push the sealing plate 54 to move upward through the piston driving rod 52 at this time, so that the sealing column 53 is inserted into the inside of the sealing hole 55, and the carbon dioxide gas will be temporarily stored above the sealing plate 54. When the fuel supply is stopped, the fuel no longer continuously pushes the moving disc 326, and the elastic member 333 returns to its original state. Thus, the gas in the second sleeve 51 flows into the first sleeve 332, and then drives the sealing plate 54 to move downward through the piston driving rod 52. Thus, the carbon dioxide temporarily stored above the sealing plate 54 can flow downward through the sealing holes 55 and finally quickly flow into the supply pipe 1 through the discharge assembly 4 to ensure that the carbon dioxide gas quickly enters the boiler during the process of stopping the fuel supply, so as to immediately extinguish the flame in the boiler and avoid dry burning.

[0090] In a preferred embodiment of the present invention, it can be further configured as follows: As Figure 2As shown; the diameter of the sealing hole 55 is adapted to the outer diameter of the sealing column 53. A barometric pressure sensor 12 is fixedly installed in the temporary storage area of the storage tank 2. The barometric pressure sensor 12 is provided to ensure that the carbon dioxide above the sealing plate 54 does not exceed the set value, that is, it will not cause the sealing plate 54 to displace to one side of the second sleeve 51 due to excessive carbon dioxide, so that the sealing column 53 is always inside the sealing hole 55. The temporary storage area is provided to ensure that the high-pressure carbon dioxide in the high-pressure storage area of the storage tank 2 can be first released into the temporary storage area and can quickly enter the supply pipe 1 when the fuel supply is stopped, and at the same time, it also serves the purpose of transfer. The purpose of providing a pressure reducing valve is that the pressure reducing valve needs to control the output volume and output speed of the gas to avoid danger during the process of releasing carbon dioxide.

[0091] The specific working principle of an emergency shutdown safety interlock device for a boiler truck according to the present invention is as follows:

[0092] During the use of the device, if it is necessary to add carbon dioxide to the high-pressure storage area of the storage tank 2, the operator can operate through the gas filling pipe 8. The first one-way valve 9 only allows carbon dioxide to flow from the gas filling pipe 8 into the high-pressure storage area to prevent the carbon dioxide in the high-pressure storage area from flowing back. During the addition process, the pressure gauge 10 monitors the pressure in the high-pressure storage area in real time so that the operator can accurately control the addition amount to ensure that an appropriate carbon dioxide pressure is maintained in the high-pressure storage area;

[0093] In addition, during fuel supply, the carbon dioxide in the high-pressure storage area flows into the temporary storage area through the pressure reducing valve 7 for transfer and standby. The barometric pressure sensor 12 can ensure that the carbon dioxide above the sealing plate 54 does not exceed the set value, avoiding displacement of the sealing plate 54 to one side of the second sleeve 51 due to excessive carbon dioxide and ensuring the stable operation of the device;

[0094] During the fuel supply process, while the fuel pushes the moving disc 326, it can enter between the first disc 321 and the moving disc 326 through the fourth one-way valve 11, and push the sealing ring 324 to the side away from the first disc 321 through the moving disc 326, the connecting rod 325 and the sealing rod body 323. Since the connecting rod 325 is located in the circular hole 322, the fuel can pass through the circular hole 322 through the first disc 321 and be transmitted to the side away from the moving disc 326. Finally, it passes through the second one-way valve 337 on the second disc 331 and enters the boiler;

[0095] It should also be noted that, during the fuel supply process, the sealing ring 324 can drive the first sleeve rod 335 to move in the first sleeve 332 when it is away from the first disc 321, so that the gas in the first sleeve 332 is output through the connecting pipe 336 through the piston 334 and injected into the inner side of the second sleeve 51, and the piston drives the rod 52 to push the sealing plate 54 upward, so that the sealing column 53 is inserted into the inner side of the sealing hole 55, and the carbon dioxide gas is temporarily stored above the sealing plate 54. Since the piston drives the rod 52 to be subjected to the resistance of the gas, the sealing column 53 cannot be separated from the inner side of the sealing hole 55;

[0096] When the boiler vehicle triggers the emergency shutdown command and needs to stop the fuel supply, the fuel no longer continues to push the movable disc 326 to move, the elastic member 333 restores its elastic deformation, and the gas in the second sleeve 51 flows into the first sleeve 332 through the connecting pipe 336. The piston drives the rod 52 to drive the sealing plate 54 to move downward, and the carbon dioxide temporarily stored above the sealing plate 54 flows downward through the sealing hole 55, and then passes through the discharge pipe 41 and the third one-way valve 42 to enter the gas release area of ​​the hollow ring 43, and then flows into the inner side of the supply pipe 1 through a number of connecting pipes 44 equidistantly distributed in an annular shape, and finally enters the boiler. On the one hand, the carbon dioxide introduced into the boiler will dilute the oxygen concentration around the remaining fuel in the boiler, so that the remaining fuel cannot continue to burn due to lack of oxygen, thereby realizing fuel cutting; on the other hand, carbon dioxide has a certain cooling effect, which can reduce the boiler temperature and effectively prevent the boiler from burning dry, thereby completing the emergency shutdown operation and ensuring the safe operation of the boiler vehicle.

[0097] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0098] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler truck emergency shutdown safety interlock device, comprising a supply pipe (1) for supplying fuel, wherein one end of the supply pipe (1) is connected to a fuel supply system, and the other end is connected to a boiler, characterized in that: Also includes: A storage tank (2), the storage tank (2) being arranged on the supply pipe (1), wherein the storage tank (2) is divided into a high-pressure storage area and a temporary storage area, wherein the high-pressure storage area is filled with carbon dioxide and the carbon dioxide in the high-pressure storage area can flow into the temporary storage area; A piston pushing assembly (3), wherein the piston pushing assembly (3) is arranged in the supply pipe (1); A discharge assembly (4), wherein the discharge assembly (4) is arranged on the storage tank (2), wherein the discharge assembly (4) is in communication with a temporary storage area of ​​the storage tank (2) and the supply pipe (1); A connecting component (5) is arranged in the storage tank (2) and is interconnected with the piston pushing component (3), wherein when the fuel supply is stopped, the piston pushing component (3) drives the connecting component (5) to communicate with the discharge component (4) to pass the carbon dioxide in the temporary storage area into the boiler, thereby cutting off the fuel and shutting down the boiler in an emergency.

2. A boiler truck emergency shutdown safety interlock device according to claim 1, characterized in that: A partition (6) is fixedly installed on the inner side of the storage tank (2), and the partition (6) is used to divide the internal area of ​​the storage tank (2) into a high-pressure storage area and a temporary storage area, wherein a pressure reducing valve (7) is also arranged on the partition (6), and the high-pressure storage area of ​​the storage tank (2) is filled with high-pressure carbon dioxide, wherein the high-pressure carbon dioxide in the high-pressure storage area of ​​the storage tank (2) flows into the temporary storage area of ​​the storage tank (2) through the pressure reducing valve (7).

3. A boiler truck emergency shutdown safety interlock device according to claim 1, characterized in that: A gas filling pipe (8) is fixedly installed on the outer side of the storage tank (2), one end of which penetrates and extends into the high-pressure storage area of ​​the storage tank (2). A first one-way valve (9) is also arranged on the outer side of the gas filling pipe (8). Carbon dioxide is added to the high-pressure storage area of ​​the storage tank (2) through the gas filling pipe (8) and the first one-way valve (9). The storage tank (2) is also provided with a pressure gauge (10) which is interconnected with the high-pressure storage area.

4. A boiler truck emergency shutdown safety interlock device according to claim 1, characterized in that: The piston pushing assembly (3) comprises: A first fixing ring (31), the first fixing ring (31) being fixedly mounted on the inner side of the supply pipe (1); A pressing air intake component (32), wherein the pressing air intake component (32) is arranged on the inner side of the first fixing ring (31); A pushing member (33), wherein the pushing member (33) is arranged at the end of the pressing air intake member (32); An air pipe (34), one end of which passes through the first fixing ring (31) and is in communication with the pressing air intake component (32), and the other end of which is in communication with the connecting component (5). When fuel is supplied, the pushing component (33) drives the pressing air intake component (32) to disconnect the connecting component (5) and the exhaust component (4) from each other through the air pipe (34), so that the fuel gas can be supplied normally.

5. A boiler truck emergency shutdown safety interlock device according to claim 1, characterized in that: The pressing air intake component (32) comprises: A first disc (321), the first disc (321) being fixedly mounted on the inner side of the first fixing ring (31), wherein a plurality of circular holes (322) equidistantly distributed in an annular shape are formed on the surface of the first disc (321); A sealing rod body (323), wherein the sealing rod body (323) is arranged inside the circular hole (322), wherein the number and distribution position of the sealing rod bodies (323) are adapted to the circular hole (322); A sealing ring (324), wherein one side surface of the sealing ring (324) and one end of the sealing rod (323) are fixedly connected to each other, and when the sealing ring (324) and the first disc (321) are in contact with each other, the sealing circular hole (322) is covered; A connecting rod (325), one end of which is fixedly connected to the other end of the sealing rod body (323), wherein the number and distribution positions of the connecting rods (325) are adapted to those of the sealing rod body (323); A movable disc (326) is fixedly mounted on the other end of the connecting rod (325).

6. A boiler truck emergency shutdown safety interlock device according to claim 5, characterized in that: The outer side of the sealing rod body (323) is provided with a sealing rubber sleeve, wherein the sealing rubber sleeve is in close contact with the inner wall of the circular hole (322), the diameter of the sealing rod body (323) is larger than the diameter of the connecting rod (325), the movable disc (326) is in contact with the inner wall of the supply pipe (1) and is displaced along the length direction of the supply pipe (1), and a fourth one-way valve (11) is provided on the surface of the movable disc (326).

7. A boiler truck emergency shutdown safety interlock device according to claim 6, characterized in that: The pushing member (33) comprises: A second disc (331), the second disc (331) being fixedly mounted on the inner side of the supply pipe (1), wherein a second one-way valve (337) is arranged on the surface of the second disc (331); A first sleeve (332), the first sleeve (332) being fixedly mounted on a surface of one side of the second disc (331) close to the sealing ring (324); An elastic member (333), one end of which is fixedly mounted on the inner side of the first sleeve (332), and the other end of which is fixedly mounted with a piston (334); A first rod (335), one end of which is fixedly connected to the surface of the piston (334), and the other end of which passes through and extends to the outside of the first sleeve (332), wherein the end of the first rod (335) away from the piston (334) is fixedly connected to the sealing ring (324); A connecting pipe (336), one end of which passes through the second disc (331) and is in communication with the first sleeve (332), and the other end of which passes through the supply pipe (1) and is in communication with the storage tank (2).

8. The boiler truck emergency shutdown safety interlock device according to claim 1 is characterized in that: The discharge assembly (4) comprises: a discharge pipe (41), one end of which passes through the storage tank (2) and is in communication with the temporary storage area of ​​the storage tank (2), wherein a third one-way valve (42) is also provided on the discharge pipe (41); a hollow circular ring (43), the hollow circular ring (43) being fixedly mounted on the outer side of the supply pipe (1), wherein a gas release area is provided on the inner side of the hollow circular ring (43), wherein an end of the discharge pipe (41) away from the storage tank (2) is in communication with the gas release area of ​​the hollow circular ring (43); A connecting pipe (44), one end of which is connected to the gas release area of ​​the hollow ring (43), and the other end of which penetrates and extends to the inner side of the supply pipe (1). The connecting pipes (44) are provided in a plurality and are equidistantly distributed in a ring shape according to the axis of the supply pipe (1).

9. A boiler car emergency shutdown safety interlock device according to claim 7, characterized in that: The connectivity component (5) comprises: A second sleeve (51), the second sleeve (51) is fixedly installed in the temporary storage area of ​​the storage tank (2), wherein the other end of the connecting pipe (336) is in communication with the second sleeve (51); a piston driving rod (52), one end of which is disposed inside the second sleeve (51) and in contact with the inner wall of the second sleeve (51), and the other end of which penetrates through and extends to the outside of the second sleeve (51); A sealing column (53), wherein the sealing column (53) is fixedly installed in the temporary storage area of ​​the storage tank (2), wherein the number of the sealing columns (53) is set to be a plurality and they are distributed in an annular manner and at equal intervals according to the axis of the storage tank (2); A sealing plate (54), wherein the sealing plate (54) is fixedly mounted on an end portion of the piston driving rod (52) located outside the second sleeve (51); Sealing holes (55), the sealing holes (55) are opened on the surface of the sealing plate (54), wherein the number and distribution positions of the sealing holes (55) are matched one by one with the sealing columns (53).

10. A boiler truck emergency shutdown safety interlock device according to claim 9, characterized in that: The diameter of the sealing hole (55) is matched to the outer diameter of the sealing column (53), wherein an air pressure sensor (12) is fixedly installed in the temporary storage area of ​​the storage tank (2).

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