Conveyor for a heterogeneous liquid mixing injection device

Abstract

The utility model relates to a conveyor technical field especially a kind of conveyor for different liquid mixed injection device, including box, the inside of box is equipped with pump head by mounting seat, and the inside of box is also connected with driving motor by mounting seat, the connecting shaft of driving motor output shaft and pump head end part is connected by shaft coupling, the liquid inlet end of pump head is connected with first infusion tube, another end of first infusion tube penetrates box and is connected with liquefied natural gas storage tank, and in the liquid outlet end of pump head is connected with second infusion tube, another end of second infusion tube is connected with injection device by pipeline. The air in the box can be transported into the heat exchange pipe by the gas pump, the liquefied natural gas transported by the first infusion tube cools the air, the cooled air can be transported into the box by the second gas pipe, the driving motor and the gas pump are cooled, the cooling effect is good, and the use effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of conveyor technology, and in particular to a conveyor for a heterogeneous liquid mixing and spraying device. Background Technology

[0002] The LNG mixing injection system on a LNG carrier is an active safety system designed to eliminate the risk of "rollover" explosions caused by LNG stratification in the cargo tank. Its core function is to maintain the homogeneity and stability of the fluid in the tank by forcibly mixing LNG layers of different densities. In use, the natural gas liquid in the storage tank needs to be transported to the injection device by a conveyor to avoid LNG stratification.

[0003] Existing conveyors for heterogeneous liquid mixing injection devices are typically shipboard pump sets. During operation, the pump set pumps liquefied natural gas (LNG) from the storage tank to the injection device via pipelines, and the injection device then transports the LNG back to the storage tank. However, during operation, the drive unit in the pump set generally uses forced air cooling for heat dissipation, which is susceptible to external environmental factors, resulting in poor performance. Furthermore, because the pump set is installed in contact with the external environment, dust and other impurities easily adhere to the surface of the drive unit or accumulate inside the drive unit through its heat dissipation channels, leading to poor dust prevention. Therefore, we propose a conveyor for heterogeneous liquid mixing injection devices. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a conveyor for a heterogeneous liquid mixing jet device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a conveyor for a heterogeneous liquid mixing spray device is designed, including a housing, a pump head is mounted inside the housing via a mounting base, and a drive motor is also connected inside the housing via a mounting base. The output shaft of the drive motor is connected to the connecting shaft at the end of the pump head via a coupling.

[0006] The pump head is connected to a first delivery pipe at the inlet end, and the other end of the first delivery pipe passes through the tank and is connected to the liquefied natural gas storage tank. A second delivery pipe is connected to the pump head at the outlet end, and the other end of the second delivery pipe is connected to the injection device through a pipeline.

[0007] The side of the first infusion tube is coaxially fitted with a heat insulation cover. A heat exchange tube is installed inside the heat insulation cover. One end of the heat exchange tube is connected to the first gas delivery tube. One end of the first gas delivery tube passes through the heat insulation cover and the side wall of the box. The other end of the first gas delivery tube is connected to the gas delivery pump inside the box. The gas delivery pump is located on one side of the drive motor and is fixed at the bottom of the box.

[0008] The air inlet of the air pump is connected to the inside of the box, and the other end of the heat exchange tube is connected to the second air pipe. One end of the second air pipe passes through the side wall of the heat insulation cover. An exhaust pipe is installed at the top inside the box. One end of the exhaust pipe is connected to the end of the second air pipe, and several exhaust holes are opened at the bottom of the exhaust pipe, with the exhaust holes facing the top of the drive motor.

[0009] The housing is equipped with a partition, which is located between the pump head and the drive motor. At least one pair of fixing blocks are symmetrically installed on one side of the partition. A strip connecting block is rotatably connected between the fixing blocks. One end of the strip connecting block extends to one side of the fixing block, and a dust cover is connected to the end of the strip connecting block. A sealing frame is provided at the end of the housing near the drive motor. The edges of the sealing frame are fixed to the side of the partition and the inner wall of the housing, and one side of the dust cover abuts against the side of the sealing frame.

[0010] Preferably, the housing has a partition installed inside, which is located between the pump head and the drive motor, and a heat insulation pad is provided on the outer surface of the partition. The heat insulation pad is made of aerogel felt material.

[0011] Preferably, the heat exchange tube is spirally arranged and is sleeved on the surface of the first infusion tube.

[0012] Preferably, the second air supply pipe is arranged in an "S" shape and is located above the drive motor.

[0013] Preferably, the end of the housing near the pump head is connected to a first door via a hinge, and the other side of the first door is connected to the side of the partition via a latch;

[0014] The end of the housing closest to the drive motor is connected to a second door via a hinge. The other side of the second door is connected to the side of the partition via a latch. When the other side of the second door is connected to the side of the partition via the latch, the side of the second door abuts against the side of the dust cover.

[0015] Preferably, a sealing flange is installed on the edge of the dust cover near the sealing frame, so that when the dust cover is placed on the side of the sealing frame, the side of the sealing flange is sealed to the side of the sealing frame.

[0016] Preferably, the inner wall of the heat insulation cover is provided with a heat insulation layer, which is made of aerogel felt material.

[0017] Preferably, the outer surface of the enclosure is coated with a PVDF fluorocarbon coating.

[0018] The design scheme proposed in this utility model has the following beneficial effects in application:

[0019] 1. The air inside the box can be transported to the heat exchange tube through the first gas supply pipe by the gas pump. The liquefied natural gas transported through the first liquid supply pipe cools the air. The cooled air can be transported back to the box through the second gas supply pipe to cool and dissipate heat to the drive motor and the gas pump. The heat dissipation effect is good and the performance is improved.

[0020] 2. By combining the dust cover and each frame, the opening at the end of the housing closest to the drive motor can be sealed, so that the drive motor is located in a closed space. This prevents external dust and other impurities from adhering to the surface and inside of the drive motor, thus improving the dustproof effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the air pump and exhaust pipe structure of this utility model;

[0024] Figure 4 This is a side view of the structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the dust cover structure of this utility model.

[0026] In the diagram: 1. Box body; 2. First infusion pipe; 3. Insulation cover; 4. Pump head; 5. First box door; 6. First gas infusion pipe; 7. Partition plate; 8. Dustproof cover; 9. Sealing frame; 10. Second box door; 11. Drive motor; 12. Second infusion pipe; 13. Second gas infusion pipe; 14. Exhaust pipe; 15. Gas pump; 16. Heat exchange pipe; 17. Exhaust port; 18. Sealing edge; 19. Strip connecting block; 20. Fixing block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figures 1-5 A conveyor for a heterogeneous liquid mixing jet device includes a housing 1. A pump head 4 is mounted inside the housing 1 via a mounting base. A drive motor 11 is also connected inside the housing 1 via a mounting base. The output shaft of the drive motor 11 is connected to the connecting shaft at the end of the pump head 4 via a coupling. The drive motor 11 can drive the impeller inside the pump head 4 to rotate, thereby conveying the raw materials.

[0029] It should be noted that, as Figure 1 and Figure 4 As shown, a partition 7 is installed inside the housing 1. The partition 7 is located between the pump head 4 and the drive motor 11, and a heat insulation pad is provided on the outer surface of the partition 7. The heat insulation pad is made of aerogel felt material. The partition 7 can separate the pump head 4 from the drive motor 11, so that the low temperature generated by the pump head 4 when transporting liquefied natural gas will not affect the drive motor 11.

[0030] like Figure 1 and Figure 2 As shown, the inlet end of the pump head 4 is connected to a first delivery pipe 2, the other end of which passes through the housing 1 and is connected to the liquefied natural gas storage tank. The outlet end of the pump head 4 is connected to a second delivery pipe 12, the other end of which is connected to the injection device through a pipeline. In actual use, the impeller inside the pump head 4 can transport the liquefied natural gas in the storage tank to the second delivery pipe 12 through the first delivery pipe 2. Finally, the liquefied natural gas is transported to the injection device through the pipeline and sprayed out, completing the transportation.

[0031] like Figure 2 and Figure 3 As shown, a heat insulation cover 3 is coaxially fitted on the side of the first liquid delivery pipe 2. A heat exchange pipe 16 is installed inside the heat insulation cover 3. One end of the heat exchange pipe 16 is connected to the first gas delivery pipe 6. One end of the first gas delivery pipe 6 passes through the heat insulation cover 3 and the side wall of the box 1. The other end of the first gas delivery pipe 6 is connected to the gas delivery pump 15 inside the box 1. The gas delivery pump 15 is located on one side of the drive motor 11 and is fixed to the bottom of the box 1. The air inlet of the gas delivery pump 15 is connected to the inside of the box 1. In actual use, the gas delivery pump 15 can draw in the air inside the box 1 and deliver it to the heat exchange pipe 16 along the first gas delivery pipe 6. In this way, the first liquid delivery pipe 2 will cool the high-speed air flowing in the heat exchange pipe 16 during the process of transporting liquefied natural gas.

[0032] like Figure 2 and Figure 3 As shown, the other end of the heat exchange tube 16 is connected to the second air supply pipe 13. One end of the second air supply pipe 13 penetrates the side wall of the heat insulation cover 3. An exhaust pipe 14 is installed at the top inside the box 1. One end of the exhaust pipe 14 is connected to the end of the second air supply pipe 13. Several exhaust holes 17 are opened at the bottom of the exhaust pipe 14. The exhaust holes 17 face the top of the drive motor 11. In actual use, the cooled low-temperature air is then transported to the large exhaust pipe 14 through the second air supply pipe 13, and finally blown to the drive motor 11 through the exhaust holes 17 to cool down the drive motor 11.

[0033] It should be noted that, as Figure 3As shown, the heat exchange tube 16 is spirally arranged and sleeved on the surface of the first liquid delivery tube 2. By spirally arranging the heat exchange tube 16, the air flow within the heat exchange tube 16 can be increased, thereby extending the cooling time of the air within the heat exchange tube 16 by the liquefied natural gas in the first liquid delivery tube 2. This allows the high-speed air flowing within the heat exchange tube 16 to be fully cooled to the preset temperature, preventing damage to the drive motor 11 when cooling it down.

[0034] It should be noted that since the air pump 15 is located on one side of the drive motor 11, the cold air discharged from the exhaust port 17 can simultaneously cool the air pump 15, thus preventing the air pump 15 from overheating during operation and improving the heat dissipation and cooling effect.

[0035] like Figure 3 and Figure 4 As shown, the second air supply pipe 13 is arranged in an "S" shape and is located above the drive motor 11. This increases the exhaust area of ​​the exhaust port 17, allowing the drive motor 11 and the air pump 15 to be adequately cooled.

[0036] like Figure 1 and Figure 5 As shown, a partition 7 is installed inside the housing 1. The partition 7 is located between the pump head 4 and the drive motor 11. At least one pair of fixing blocks 20 are symmetrically installed on one side of the partition 7. A strip connecting block 19 is rotatably connected between the fixing blocks 20. One end of the strip connecting block 19 extends to one side of the fixing block 20, and a dust cover 8 is connected to the end of the strip connecting block 19. A sealing frame 9 is provided at the end of the housing 1 near the drive motor 11. The edges of the sealing frame 9 are fixed to the side of the partition 7 and the inner wall of the housing 1, respectively. One side of the dust cover 8 abuts against the side of the sealing frame 9. In actual use, by covering the sealing frame 9 with the dust cover 8, the drive motor 11 can be isolated from the external environment. In this way, dust and other impurities in the external environment will not be adsorbed onto the surface of the drive motor 11 during use, thus improving the dustproof effect.

[0037] like Figure 1 and Figure 2 As shown, the end of the housing 1 near the pump head 4 is connected to the first door 5 by a hinge. The other side of the first door 5 is connected to the side of the partition 7 by a latch. The opening at one end of the housing 1 can be covered by the first door 5, which can protect the pump head 4 inside the housing 1.

[0038] like Figure 1 and Figure 4As shown, the end of the housing 1 closest to the drive motor 11 is connected to a second door 10 via a hinge. The other side of the second door 10 is connected to the side of the partition 7 via a latch. When the other side of the second door 10 is connected to the side of the partition 7 via the latch, the side of the second door 10 abuts against the side of the dust cover 8. In actual use, by closing the second door 10, the drive motor 11 and the air pump 15 inside the housing 1 can be protected. At the same time, the dust cover 8 can be tightly held in place to prevent the dust cover 8 from separating from the sealing frame 9.

[0039] Specifically, in use, the dust cover 8 can be placed over the sealing frame 9 to seal the dust cover 8 against the sealing frame 9. This ensures that the drive motor 11 is located in a sealed environment inside the housing 1, preventing external dust from adhering to the surface and interior of the drive motor 11, thus improving the dustproof effect. The operator then controls the drive motor 11 to operate, which in turn drives the impeller inside the pump head 4 to rotate, transporting the liquefied natural gas from the storage tank through the first delivery pipe 2 and the second delivery pipe 12 to the injection device for spraying. During the transportation process, the operator controls the gas pump 15. In operation, the gas pump 15 delivers air from the housing 1 to the first gas pipe 6. The air then flows along the first gas pipe 6 to the heat exchange pipe 16. As the air flows rapidly inside the heat exchange pipe 16, the liquefied natural gas delivered in the first liquid pipe 2 cools the air inside the heat exchange pipe 16. The low-temperature air is then delivered to the exhaust pipe 14 through the second gas pipe 13 and sprayed through the exhaust hole 17 on the exhaust pipe 14 onto the surface of the drive motor 11 and the gas pump 15 inside the housing 1, thus cooling the drive motor 11 and the gas pump 15. The cooling speed is fast, improving the performance.

[0040] Furthermore, such as Figure 5 As shown, a sealing baffle 18 is installed on one edge of the dust cover 8 near the sealing frame 9. When the dust cover 8 is placed on the side of the sealing frame 9, the side of the sealing baffle 18 is sealed to the side of the sealing frame 9. Through the cooperation of the sealing baffle 18 and the sealing frame 9, the connection between the dust cover 8 and the sealing frame 9 can be further sealed, preventing external dust from adsorbing on the drive motor 11 and also preventing the cold air discharged from the exhaust port 17 from leaking into the surrounding environment.

[0041] Furthermore, such as Figure 3 As shown, the inner wall of the heat insulation cover 3 is provided with a heat insulation layer, which is made of aerogel felt material. In this way, the heat insulation cover 3 can keep the heat exchange tube 16 warm and prevent the heat on the heat exchange tube 16 from leaking into the surrounding environment.

[0042] Furthermore, the outer surface of the container 1 is coated with PVDF fluorocarbon, so that the surface of the container 1 will not be corroded by the saline-alkali environment when the natural gas ship is sailing at sea, thus improving the performance.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A conveyor for a heterogeneous liquid mixing jet device, comprising a housing (1), characterized in that: The pump head (4) is mounted inside the housing (1) via a mounting base, and the drive motor (11) is also connected inside the housing (1) via a mounting base. The output shaft of the drive motor (11) is connected to the connecting shaft at the end of the pump head (4) via a coupling. The pump head (4) is connected to the inlet end of the pump head (4) via a first delivery pipe (2), the other end of the first delivery pipe (2) passes through the housing (1) and is connected to the liquefied natural gas storage tank, and the pump head (4) is connected to the outlet end of the pump head (4) via a second delivery pipe (12), the other end of the second delivery pipe (12) is connected to the injection device via a pipe. A heat insulation cover (3) is coaxially fitted on the side of the first infusion tube (2). A heat exchange tube (16) is installed inside the heat insulation cover (3). One end of the heat exchange tube (16) is connected to the first gas delivery tube (6). One end of the first gas delivery tube (6) passes through the heat insulation cover (3) and the side wall of the box (1). One end of the first gas delivery tube (6) is connected to the gas delivery pump (15) inside the box (1). The gas delivery pump (15) is located on one side of the drive motor (11) and is fixed at the bottom of the box (1).

2. The conveyor for a heterogeneous liquid mixing jet device according to claim 1, characterized in that: The air inlet of the air pump (15) is connected to the inside of the box (1). The other end of the heat exchange tube (16) is connected to the second air pipe (13). One end of the second air pipe (13) passes through the side wall of the heat insulation cover (3). An exhaust pipe (14) is installed at the top inside the box (1). One end of the exhaust pipe (14) is connected to the end of the second air pipe (13). Several exhaust holes (17) are opened at the bottom of the exhaust pipe (14). The exhaust holes (17) face the top of the drive motor (11).

3. The conveyor for a heterogeneous liquid mixing jet device according to claim 2, characterized in that: The housing (1) is equipped with a partition (7) located between the pump head (4) and the drive motor (11). At least one pair of fixing blocks (20) are symmetrically installed on one side of the partition (7). A strip connecting block (19) is rotatably connected between the fixing blocks (20). One end of the strip connecting block (19) extends to one side of the fixing block (20), and a dust cover (8) is connected to the end of the strip connecting block (19). A sealing frame (9) is provided at one end of the housing (1) near the drive motor (11). The edges of the sealing frame (9) are fixed to the side of the partition (7) and the inner wall of the housing (1), respectively. One side of the dust cover (8) abuts against the side of the sealing frame (9).

4. The conveyor for a heterogeneous liquid mixing jet device according to claim 3, characterized in that: The housing (1) is equipped with a partition (7), which is located between the pump head (4) and the drive motor (11). A heat insulation pad is provided on the outer surface of the partition (7), which is made of aerogel felt material.

5. The conveyor for a heterogeneous liquid mixing jet device according to claim 4, characterized in that: The heat exchange tube (16) is spirally arranged and is sleeved on the surface of the first infusion tube (2).

6. The conveyor for a heterogeneous liquid mixing jet device according to claim 4, characterized in that: The second air supply pipe (13) is arranged in an "S" shape and is located above the drive motor (11).

7. The conveyor for a heterogeneous liquid mixing jet device according to claim 4, characterized in that: The first door (5) is connected to the end of the housing (1) near the pump head (4) by a hinge, and the other side of the first door (5) is connected to the side of the partition (7) by a latch; The end of the housing (1) near the drive motor (11) is connected to a second door (10) via a hinge. The other side of the second door (10) is connected to the side of the partition (7) via a latch. When the other side of the second door (10) is connected to the side of the partition (7) via a latch, the side of the second door (10) abuts against the side of the dust cover (8).

8. The conveyor for a heterogeneous liquid mixing jetting device according to claim 7, characterized in that: A sealing flange (18) is installed on one side edge of the dust cover (8) near the sealing frame (9). When the dust cover (8) is placed on the side of the sealing frame (9), the side of the sealing flange (18) is sealed to the side of the sealing frame (9).

9. The conveyor for a heterogeneous liquid mixing jet device according to claim 3, characterized in that: The inner wall of the heat insulation cover (3) is provided with a heat insulation layer, which is made of aerogel felt material.

10. A conveyor for a heterogeneous liquid mixing jetting device according to claim 3, characterized in that: The outer surface of the box (1) is coated with PVDF fluorocarbon.

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