阅读说明：本技术 一种lng冷能回收制冰装置以及方法 (LNG cold energy recovery ice making device and method ) 是由 刘勇 于 2021-08-20 设计创作，主要内容包括：本发明涉及LNG冷能回收利用技术领域,具体涉及一种LNG冷能回收制冰装置以及方法；包括LNG装置、载冷剂装置、储液罐、制冰柜和除冰组件,除冰组件包括刮板、加热块、两个螺杆、两个从动轮、主动轮、皮带和电机,刮板连接螺杆和加热块,从动轮连接螺杆、皮带和主动轮,主动轮连接电机,对制冰柜除冰时,电机通电输出端驱动主动轮,主动轮转动驱动从动轮,从而使皮带转动驱动另一个从动轮转动,使两个螺杆转动并驱动刮板在制冰柜内壁滑动刮掉冰层,刮板空腔内的加热块通电发热,加热刮板防止刮板与制冰柜被冰块粘在一起无法移动,解决现有LNG冷能回收制冰装置需人工去除装置内壁上的冰效率低的问题。(The invention relates to the technical field of LNG cold energy recycling, in particular to an LNG cold energy recycling ice making device and method; including the LNG device, the secondary refrigerant device, the liquid storage pot, system refrigerator-freezer and deicing subassembly, deicing subassembly includes the scraper blade, the heating piece, two screw rods, two are followed the driving wheel, the action wheel, belt and motor, scraper blade connecting screw rod and heating piece, from driving wheel connecting screw rod, belt and action wheel, the motor is connected to the action wheel, when making ice chest deicing, motor circular telegram output end drive action wheel, the action wheel rotates the drive and follows the driving wheel, thereby make another driven wheel rotation of belt rotation drive, make two screw rods rotate and drive the scraper blade and scrape the ice layer at the slide of refrigerator-freezer inner wall, the heating piece circular telegram in the scraper blade cavity generates heat, the heating scraper blade prevents that scraper blade and ice chest from being glued together unable removal by the ice-cube, solve the problem that current LNG cold energy is retrieved ice making device and need the ice inefficiency on the artifical remove device inner wall.)

1. An LNG cold energy recovery ice making device is characterized in that,

the ice making device comprises an LNG device, a secondary refrigerant device, a liquid storage tank, an ice making cabinet and an ice removing assembly, wherein the ice removing assembly comprises a scraper plate, a heating block, two screw rods, two driven wheels, a driving wheel, a belt and a motor, the scraper plate is in sliding connection with the ice making cabinet and is positioned in the ice making cabinet, the scraper plate is provided with a cavity, the cavity is positioned in the scraper plate, the heating block is fixedly connected with the scraper plate and is positioned in the cavity, the two screw rods are respectively in threaded connection with the scraper plate and are respectively in fixed connection with the ice making cabinet and are respectively positioned on one side of the scraper plate, the driven wheels of the screw rods are respectively in fixed connection with the screw rods and are respectively positioned on one side of the screw rods away from the scraper plate, the belt is sleeved on the driven wheel, the driving wheel is rotatably connected with the driven wheel and is positioned on one side of the driven wheel away from the ice making cabinet, and the motor is fixedly connected with the driving wheel, and is fixedly connected with the ice making cabinet and positioned on one side of the driving wheel.

2. The LNG cold energy recovery ice making apparatus of claim 1,

the motor comprises a mounting seat and a motor body, the mounting seat is fixedly connected with the ice making cabinet and is positioned at the top of the ice making cabinet, the motor body is fixedly connected with the mounting seat and is fixedly connected with the driving wheel and is positioned far away from the mounting seat on one side of the ice making cabinet.

3. The LNG cold energy recovery ice making apparatus of claim 1,

deicing subassembly still includes water tank, liquid pump and spray pipe, the water tank with system ice-box fixed connection, and be located system ice-box one side, the liquid pump with water tank fixed connection, and be located the water tank is close to system ice-box one side, the spray pipe with liquid pump fixed connection, and with system ice-box fixed connection, and be located be close to in the system ice-box scraper blade one side.

4. The LNG cold energy recovery ice making apparatus of claim 3,

the deicing assembly further comprises an electric heating net, and the electric heating net is fixedly connected with the water tank and is located in the water tank.

5. The LNG cold energy recovery ice making apparatus of claim 3,

the ice making cabinet comprises a cabinet body and an evaporation plate, wherein the cabinet body is fixedly connected with the water tank and is positioned on one side of the water tank, and the evaporation plate is fixedly connected with the cabinet body and is positioned on one side of the scraper plate close to the cabinet body.

6. The LNG cold energy recovery ice making apparatus of claim 5,

the ice chest still includes two drawers and two pull rings, two the drawer respectively with cabinet body sliding connection all is located cabinet body one side, two the pull ring respectively with drawer fixed connection all is located the drawer is kept away from cabinet body one side.

7. The LNG cold energy recovery ice making device recovery method according to claim 1, comprising the steps of,

the refrigerating medium device leads the R404A to an LNG device, and the LNG exchanges heat with high-temperature R404A;

the liquid storage tank introduces the glycol aqueous solution into the secondary refrigerant device, and the glycol aqueous solution exchanges heat with the low temperature R404A;

introducing the low-temperature ethylene glycol aqueous solution into a refrigerating cabinet, and exchanging heat between the low-temperature ethylene glycol aqueous solution and water to make ice;

and (4) taking out ice blocks, driving the screw rod to rotate by the output end of the motor, enabling the scraper plate to move to scrape off the ice layer on the side plate of the ice making cabinet by the rotation of the screw rod, and repeating the operation to make ice.

Technical Field

The invention relates to the technical field of LNG cold energy recycling, in particular to an LNG cold energy recycling ice making device and method.

Background

At present, in an LNG receiving station and a LNG vaporizing station, seawater or air is mainly used as a heat source for LNG vaporization, and a heating furnace is used as a supplementary heat source for LNG regasification. The LNG absorbs heat of seawater or air, i.e., releases cold to the seawater or air, thereby gasifying it into combustible natural gas. The domestic LNG receiving stations are also built, liquid oxygen, liquid nitrogen, liquid argon products and other rare gases are prepared by using LNG cold energy, and evaporation recovery (BOG) and cryogenic air separation ice making are performed by using the LNG cold energy.

However, after the existing LNG cold energy recovery ice making device makes ice, the inner wall of the device can be frozen to influence the ice making effect, and regular ice removal is needed.

Disclosure of Invention

The invention aims to provide an LNG cold energy recovery ice making device and method, and aims to solve the problem that the existing LNG cold energy recovery ice making device needs to manually remove ice on the inner wall of the device and is low in efficiency.

In order to achieve the purpose, the invention provides an LNG cold energy recovery ice making device, which comprises an LNG device, a secondary refrigerant device, a liquid storage tank, an ice making cabinet and a deicing assembly, wherein the deicing assembly comprises a scraper plate, a heating block, two screw rods, two driven wheels, a driving wheel, a belt and a motor, the scraper plate is slidably connected with the ice making cabinet and is positioned in the ice making cabinet, the scraper plate is provided with a cavity, the cavity is positioned in the scraper plate, the heating block is fixedly connected with the scraper plate and is positioned in the cavity, the two screw rods are respectively in threaded connection with the scraper plate and are respectively fixedly connected with the ice making cabinet and are both positioned on one side of the scraper plate, the screw driven wheels are respectively and fixedly connected with the screw rods and are both positioned on one side of the screw rods, which is far away from the scraper plate, the belt is sleeved on the driven wheels, and the driving wheel is rotatably connected with the driven wheels, and the LNG device, the secondary refrigerant device and the liquid storage tank are matched to recover cold energy released by gasification of the LEG for the ice making cabinet to use for making ice, and the deicing assembly removes an ice layer adhered to the inner wall of the ice making machine.

Wherein, the motor includes mount pad and motor body, the mount pad with system ice cabinet fixed connection, and be located system ice chest top, motor body with mount pad fixed connection, and with action wheel fixed connection, and be located the mount pad is kept away from system ice cabinet one side, the mount pad is right motor body provides the installation condition, motor body circular telegram drive the action wheel is right the scraper blade provides power.

Wherein, deicing subassembly still includes water tank, liquid pump and spray pipe, the water tank with system ice-box fixed connection, and be located system ice-box one side, the liquid pump with water tank fixed connection, and be located the water tank is close to system ice-box one side, the spray pipe with liquid pump fixed connection, and with system ice-box fixed connection, and be located be close to in the system ice-box scraper blade one side, the water tank is used for depositing the running water, the liquid pump operation will water in the water tank is taken out leading-in the spray pipe the ice in-process is scraped in the scraper blade slides, the spray pipe is towards the ice bed water spray, makes the ice bed change to scrape and provides the effect of deicing of scraper blade.

The deicing assembly further comprises an electric heating net, the electric heating net is fixedly connected with the water tank and is located in the water tank, and the electric heating net is electrified to enable the temperature of water in the water tank to be increased, so that the deicing effect is further enhanced.

Wherein, the system refrigerator-freezer includes the cabinet body and evaporating plate, the cabinet body with water tank fixed connection, and be located water tank one side, the evaporating plate with cabinet body fixed connection, and be located the cabinet body is close to scraper blade one side, the cabinet body is right deicing component provides the installation condition, the evaporating plate makes the ice with ethylene glycol aqueous solution and water heat transfer.

Wherein, the system refrigerator-freezer still includes two drawers and two pull rings, two the drawer respectively with cabinet body sliding connection all is located cabinet body one side, two the pull ring respectively with drawer fixed connection all is located the drawer is kept away from cabinet body one side, the ice-cube is deposited to the drawer, is convenient for the workman to take out the ice-cube, the pull ring is convenient for the workman and stimulates the drawer.

The ice making cabinet further comprises a plurality of heat insulation plates, the heat insulation plates are fixedly connected with the cabinet body and are all located on the periphery of the cabinet body, and the heat insulation plates prevent external temperature from affecting ice making on the inner wall of the ice making cabinet.

Wherein, system refrigerator-freezer still includes four pulleys, four the pulley respectively with cabinet body fixed connection all is located cabinet body bottom, the setting of pulley is convenient for system refrigerator-freezer removes.

In a second aspect, a method for recovering an LNG cold energy recovery ice making device comprises the following steps,

the refrigerating medium device leads the R404A to an LNG device, and the LNG exchanges heat with high-temperature R404A;

the liquid storage tank introduces the glycol aqueous solution into the secondary refrigerant device, and the glycol aqueous solution exchanges heat with the low temperature R404A;

introducing the low-temperature ethylene glycol aqueous solution into a refrigerating cabinet, and exchanging heat between the low-temperature ethylene glycol aqueous solution and water to make ice;

and (4) taking out ice blocks, driving the screw rod to rotate by the output end of the motor, enabling the scraper plate to move to scrape off the ice layer on the side plate of the ice making cabinet by the rotation of the screw rod, and repeating the operation to make ice.

The LNG cold energy recovery ice making device comprises an LNG device, a secondary refrigerant device and a liquid storage tank, wherein the LNG device, the secondary refrigerant device and the liquid storage tank are matched with each other to recover cold energy released by LEG gasification, so that ice is made by the ice making cabinet, an ice layer adhered to the inner wall of the ice making machine is removed by the ice removing assembly, specifically, after one end of ice making of the ice making cabinet is finished, ice needs to be removed from the interior of the ice making cabinet, a motor is electrified, an output end of the motor drives a driving wheel to rotate in a forward direction and drives driven wheels meshed with the driving wheel to rotate, so that a belt drives the other driven wheel to rotate, the two driven wheels rotate, two screw rods rotate and drive scraping plates to slide downwards on the inner wall of the ice making cabinet to scrape the ice layer on the inner wall of the ice making cabinet until the scraping plates reach the bottom of the ice making cabinet, and the output end of the motor drives the driving wheel to rotate in a reverse direction, thereby drive the scraper blade reset to make the refrigerator-freezer top, the motor output drives again the action wheel forward rotation, repeats this operation for the scraper blade makes the ice sheet of making the refrigerator-freezer inner wall make a round trip to slide and scrape the system refrigerator-freezer inner wall, before starting the motor, make earlier the heating block circular telegram in the cavity heat the scraper blade, prevent the scraper blade with make the refrigerator-freezer is glued together unable removal, solve current LNG cold energy recovery system ice device and need the problem that artifical ice on the remove device inner wall is inefficient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an LNG cold energy recovery ice making device provided by the present invention;

fig. 2 is a plan view of an LNG cold energy recovery ice making apparatus according to the present invention;

FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along plane B-B of FIG. 2;

fig. 5 is a schematic connection diagram of an LNG cold energy recovery ice making device according to the present invention;

fig. 6 is a flow chart of an ice making method of the LNG cold energy recovery ice making device provided by the invention.

In the figure: the device comprises a 1-LNG device, a 2-secondary refrigerant device, a 3-liquid storage tank, a 4-refrigerating cabinet, a 5-deicing component, a 41-cabinet body, a 42-evaporating plate, a 43-drawer, a 44-pull ring, a 45-heat insulation plate, a 46-pulley, a 51-scraper, a 52-cavity, a 53-heating block, a 54-screw, a 55-driven wheel, a 56-driving wheel, a 57-belt, a 58-motor, a 59-water tank, a 510-liquid pump, a 511-water spray pipe, a 512-electric heating net, a 581-mounting seat and a 582-motor body.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 6, the present invention provides an LNG cold energy recovery ice making device, including an LNG device 1, a coolant device 2, a liquid storage tank 3, an ice making cabinet 4, and a deicing assembly 5, where the deicing assembly 5 includes a scraper 51, a heating block 53, two screws 54, two driven wheels 55, a driving wheel 56, a belt 57, and a motor 58, the scraper 51 is slidably connected to the ice making cabinet 4 and is located in the ice making cabinet 4, the scraper 51 has a cavity 52, the cavity 52 is located in the scraper 51, the heating block 53 is fixedly connected to the scraper 51 and is located in the cavity 52, the two screws 54 are respectively in threaded connection with the scraper 51 and are respectively fixedly connected to the ice making cabinet 4 and are both located at one side of the scraper 51, the driven wheels 55 of the screws 54 are respectively fixedly connected to the screws 54 and are both located at one side of the screws 54 away from the scraper 51, the belt 57 is sleeved on the driven wheel 55, the driving wheel 56 is rotatably connected with the driven wheel 55 and is located on one side of the driven wheel 55 far away from the ice making cabinet 4, and the motor 58 is fixedly connected with the driving wheel 56, is fixedly connected with the ice making cabinet 4 and is located on one side of the driving wheel 56.

In this embodiment, the LNG device 1, the coolant device 2, and the liquid storage tank 3 cooperate to recover the cold energy released by the evaporation of the LEG for the ice making machine 4 to make ice, the deicing assembly 5 removes the ice layer adhered to the inner wall of the ice making machine, specifically, after a time period for making ice in the ice making machine 4, it is necessary to deice the interior of the ice making machine 4, the motor 58 is powered on, the output end of the motor 58 drives the driving wheel 56 to rotate in the forward direction, and drives the driven wheel 55 engaged with the driving wheel 56 to rotate, so that the belt 57 drives the other driven wheel 55 to rotate, the two driven wheels 55 rotate, the two screws 54 rotate, and the scraper 51 is driven to slide downwards on the inner wall of the ice making machine 4 to scrape off the ice layer on the inner wall of the ice making machine 4 until the scraper 51 reaches the bottom of the ice making machine 4, the output end of the motor 58 drives the driving wheel 56 to rotate reversely, so as to drive the scraping plate 51 to reset to the top of the ice making tank 4, the output end of the motor 58 drives the driving wheel 56 to rotate forwardly again, the operation is repeated, so that the scraping plate 51 slides back and forth on the inner wall of the ice making tank 4 to scrape the ice layer on the inner wall of the ice making tank 4, before the motor 58 is started, the heating block 53 in the cavity 52 is electrified to heat the scraping plate 51, the scraping plate 51 and the ice making tank 4 are prevented from being stuck together by ice blocks and cannot move, and the problem that the existing LNG cold energy recovery ice making device needs to manually remove ice on the inner wall is solved.

Further, the deicing assembly 5 further comprises a water tank 59, a liquid pump 510, a water spraying pipe 511 and an electric heating net 512, the water tank 59 is fixedly connected with the ice making cabinet 4, and is positioned at one side of the refrigerating cabinet 4, the liquid pump 510 is fixedly connected with the water tank 59, and is positioned at one side of the water tank 59 close to the ice making cabinet 4, the water spraying pipe 511 is fixedly connected with the liquid pump 510, and is fixedly connected with the ice making cabinet 4 and is positioned at one side of the ice making cabinet 4 close to the scraping plate 51, the electric heating net 512 is fixedly connected with the water tank 59, and is positioned in the water tank 59, the motor 58 comprises a mounting base 581 and a motor body 582, the mounting base 581 is fixedly connected with the ice making cabinet 4, and is positioned at the top of the ice making cabinet 4, the motor body 582 is fixedly connected with the mounting seat 581, and is fixedly connected with the driving wheel 56 and is positioned on one side of the mounting seat 581 far away from the ice making cabinet 4.

In this embodiment, the mounting seat 581 provides a mounting condition for the motor body 582, the motor body 582 is powered on to drive the driving wheel 56 to provide power for the scraper 51, the water tank 59 is used for storing tap water, the liquid pump 510 is operated to pump water in the water tank 59 out and guide the water into the water spray pipe 511, the water spray pipe 511 sprays water to an ice layer during the sliding ice scraping process of the scraper 51, so that the ice layer is easier to scrape to provide an ice removing effect of the scraper 51, and the electric heating net 512 is powered on to heat water in the water tank 59, thereby further enhancing the ice removing effect.

Further, system refrigerator 4 includes the cabinet body 41, evaporating plate 42, two drawers 43, two pull rings 44, a plurality of heat insulating board 45 and four pulleys 46, the cabinet body 41 with water tank 59 fixed connection, and be located water tank 59 one side, evaporating plate 42 with cabinet body 41 fixed connection, and be located the cabinet body 41 is close to scraper blade 51 one side, two drawer 43 respectively with cabinet body 41 sliding connection all is located cabinet body 41 one side, two pull rings 44 respectively with drawer 43 fixed connection all is located drawer 43 keeps away from cabinet body 41 one side, a plurality of heat insulating board 45 respectively with cabinet body 41 fixed connection all is located around the cabinet body 41, four pulleys 46 respectively with cabinet body 41 fixed connection all is located cabinet body 41 bottom.

In this embodiment, the ice removing assembly 5 is installed by the cabinet 41, the evaporating plate 42 makes ice by exchanging heat between the glycol water solution and water, the worker pulls the pull ring 44 to slide the drawer 43 out of the ice block, the thermal insulation plate 45 prevents the external temperature from affecting ice making on the inner wall of the ice making cabinet 4, and the pulley 46 facilitates the movement of the ice making cabinet 4.

In a second aspect, a method for recovering an LNG cold energy recovery ice making device comprises the following steps,

in the S101 coolant system 2, R404A is introduced into the LNG plant 1, and the LNG exchanges heat with the high-temperature R404A;

the secondary refrigerant device 2 guides the R404A into a heat exchanger of the LNG device 1, LNG stored in an LNG storage tank of the LNG device 1 enters the LNG heat exchanger to exchange heat with high-temperature R404A, the temperature is increased, and the LNG enters a downstream natural gas pipe network after being vaporized by an LNG air cooler.

S102, introducing the glycol aqueous solution into the secondary refrigerant device 2 by the liquid storage tank 3, and carrying out heat exchange on the glycol aqueous solution and the low-temperature R404A;

the liquid storage tank 3 introduces a high-temperature ethylene glycol aqueous solution into the heat exchanger of the secondary refrigerant device 2, exchanges heat with the low-temperature R404A to obtain a high-temperature R404A and a low-temperature ethylene glycol aqueous solution, changes the high-temperature R404A into the LNG heat exchanger to be cooled, changes the high-temperature R404A back into the low-temperature R404A to return to the secondary refrigerant device 2, and completes the heat exchange cycle of the R404A.

S103, introducing the low-temperature ethylene glycol aqueous solution into the ice making cabinet 4, and performing heat exchange between the low-temperature ethylene glycol aqueous solution and water to make ice;

the low-temperature glycol aqueous solution is introduced into the evaporation plate 42 of the ice making tank 4, and exchanges heat with normal-temperature tap water to make ice cubes of various shapes.

S104, the ice blocks are taken out, the screw 54 is driven to rotate by the output end of the motor 58, the screw 54 rotates to enable the scraper 51 to move and scrape off the ice layer on the side plate of the ice making cabinet 4, and ice is made after the operations are repeated.

After the ice making cabinet 4 has made ice for a period of time, a worker pulls the pull ring 44 to slide out the drawer 43, removes the ice in the drawer 43, activates the motor 58, the motor 58 is energized to drive the driving wheel 56 to rotate, the driving wheel 56 rotates to drive one of the driven wheels 55 to rotate, thereby the belt 57 rotates to drive the other driven wheel 55 to rotate, the two driven wheels 55 rotate, the two screws 54 rotate and drive the scraping plate 51 to slide on the inner wall of the ice making cabinet 4, the scraping plate 51 slides back and forth to scrape off the ice layer on the inner wall of the ice making cabinet 4, before the motor 58 is activated, the heating block 53 in the cavity 52 is energized to heat the scraping plate 51 to prevent the scraping plate 51 and the ice making cabinet 4 from being stuck together and being immovable, the liquid pump 510 is operated to draw the water in the water tank 59 into the water spray pipe 511, in the sliding ice scraping process of the scraper 51, the water spraying pipe 511 sprays water to the ice layer, so that the ice layer is easier to scrape, and the ice removing effect of the scraper 51 is provided.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.