阅读说明：本技术 流动液体内自动除渣装置、系统及方法 (Automatic slag removal device, system and method in flowing liquid ) 是由 林中山 夏芳敏 曹雨军 叶新羽 姚震 雷俊玲 于 2020-11-18 设计创作，主要内容包括：本发明公开了一种流动液体内自动除渣装置、系统及方法。其中装置包括叶轮、以及通过轴与所述叶轮连接的除渣部,其中,所述叶轮在流动液体的驱动下发生旋转,并通过轴带动所述除渣部旋转；所述除渣部用于通过液体,并在旋转作用下切碎液体中的渣。本发明通过流动液体驱动叶轮旋转,叶轮带动除渣部旋转,使除渣部高效地完成流动液体内的除渣操作。(The invention discloses a device, a system and a method for automatically removing slag in flowing liquid. The device comprises an impeller and a deslagging part connected with the impeller through a shaft, wherein the impeller is driven by flowing liquid to rotate, and the shaft drives the deslagging part to rotate; the slag removing part is used for passing through liquid and cutting slag in the liquid under the rotation action. The impeller is driven to rotate by the flowing liquid, and the impeller drives the slag removing part to rotate, so that the slag removing part can efficiently complete slag removing operation in the flowing liquid.)

1. The utility model provides an automatic slag removal device in flowing liquid which characterized in that includes: an impeller and a deslagging part connected with the impeller through a shaft, wherein,

the impeller is driven by flowing liquid to rotate and drives the deslagging part to rotate through a shaft;

the slag removing part is used for passing through liquid and cutting slag in the liquid under the rotation action.

2. The apparatus for automatically removing slag in a flowing liquid of claim 1, wherein the slag removing part comprises: a primary deslagging part and a secondary deslagging part, wherein,

the primary deslagging part and the secondary deslagging part respectively comprise an active part and a passive part which are sleeved, holes are formed in the active part and the passive part, blades are arranged at the edges of the holes, the active part in the primary deslagging part can rotate relative to the passive part in the primary deslagging part, and the active part in the secondary deslagging part can rotate relative to the passive part in the secondary deslagging part;

the impeller is driven by flowing liquid to rotate, and drives the driving parts of the primary deslagging part and the secondary deslagging part to rotate through a shaft.

3. The apparatus according to claim 2, wherein the holes in said primary deslagging portion are larger than the holes in said secondary deslagging portion; in the primary deslagging part, the hole on the driving part is larger than the hole on the driven part; in the second-stage deslagging part, the hole on the driving part is larger than the hole on the driven part.

4. The apparatus for automatically removing slag in flowing liquid according to claim 2, wherein the driving member and the driven member in the primary slag removing part are of a bent structure for increasing a contact area and a contact time with the liquid.

5. The apparatus of claim 2, wherein the active and passive elements of the secondary portion are of a tapered configuration.

6. An apparatus for automatically removing slag from a flowing liquid according to claim 2,

a bearing is arranged between the driving part and the driven part in the primary deslagging part;

and a bearing is arranged between the driving part and the driven part in the secondary deslagging part, and the bearing is positioned at the conical tip.

7. The apparatus of claim 6, wherein a baffle is disposed between the active and passive components in the secondary deslagging portion, and the baffle is located outside the bearing to prevent slag from entering the bearing.

8. An automatic slag removal system, comprising: a cryogenic liquid storage tank, and an automatic slag removal apparatus according to any one of claims 1 to 7,

a liquid inlet pipeline and a liquid outlet pipeline are arranged in the low-temperature liquid storage tank, and a pump is arranged in the liquid outlet pipeline;

the automatic slag removal device is arranged between the liquid inlet pipeline and the liquid outlet pipeline and is used for removing ice slag in the low-temperature liquid.

9. The automatic slag removal system according to claim 8, wherein the driven member is fixed to a distal end of the liquid inlet pipe and/or a front end of the liquid outlet pipe.

10. An automatic slag removal method, characterized in that slag removal is performed using the automatic slag removal system according to any one of claims 8 to 9, the method comprising:

the liquid flows under the driving of the pump, and the flowing liquid drives the impeller to rotate;

the impeller drives the slag removing part to rotate through the shaft, and the slag removing part cuts up ice slag under the rotating action.

Technical Field

The invention relates to the technical field of deslagging devices, in particular to a device, a system and a method for automatically deslagging in flowing liquid.

Background

Liquid in the superconducting cable liquid nitrogen circulation system flows under the drive of a liquid nitrogen circulating pump and runs, but because in earlier stage or running process, some operation leads to former confined space to get into steam, lead to local or some regional production ice sediment solid, flow into whole circulation system, when ice sediment solid passes through the liquid nitrogen circulating pump, can lead to the feed liquor hole jam of liquid nitrogen circulating pump, and then make the efficiency reduction of liquid nitrogen circulating pump, the maintenance of entire system low temperature state has been influenced greatly simultaneously, this problem can threaten the safe operation of system.

Currently, the ice slag in a liquid nitrogen circulating pump is treated by shutting down the whole liquid nitrogen circulating system, disassembling a pump body and lifting the heavy pump body by using a crane; during the shutdown process, a specially-assigned person needs to stare at the temperature, pressure, liquid level, vacuum degree and other parameters of the whole refrigeration system. The liquid nitrogen circulating pump is lifted by a plurality of people, the whole process is careful, time and labor are consumed, the method can be called a big project, and after the liquid nitrogen circulating pump is re-installed, data can be recovered to be normal after several days. Meanwhile, in the dismantling process, because the original closed space is opened, which is equivalent to one-time large-area heat leakage, water vapor is likely to enter to generate new ice slag.

Disclosure of Invention

Based on the above problems, an object of the present invention is to provide an apparatus, a system and a method for automatically removing slag in a flowing liquid, so as to solve the problem in the prior art that slag cannot be effectively removed from the flowing liquid, such as ice slag in a low-temperature flowing liquid.

The above purpose of the invention is realized by the following technical scheme:

according to one aspect of the invention, the invention provides a device for automatically removing slag in flowing liquid, which comprises: the device comprises an impeller and a deslagging part connected with the impeller through a shaft, wherein the impeller is driven by flowing liquid to rotate, and the shaft drives the deslagging part to rotate; the slag removing part is used for passing through liquid and cutting slag in the liquid under the rotation action.

Preferably, the deslagging portion is provided with a hole, the edge of the hole is provided with a blade, and the blade at the edge of the hole cuts up slag in the liquid under the rotation action. More preferably, the deslagging part comprises a curved surface structure, and the holes are formed in the curved surface structure.

Preferably, the slag removing part includes: the slag removing device comprises a primary slag removing part and a secondary slag removing part, wherein the primary slag removing part and the secondary slag removing part respectively comprise an active part and a passive part which are sleeved, holes are formed in the active part and the passive part, blades are arranged at the edges of the holes, the active part in the primary slag removing part can rotate relative to the passive part in the primary slag removing part, and the active part in the secondary slag removing part can rotate relative to the passive part in the secondary slag removing part; the impeller is driven by flowing liquid to rotate, and drives the driving parts of the primary deslagging part and the secondary deslagging part to rotate through a shaft.

Preferably, the holes in the primary deslagging part are larger than the holes in the secondary deslagging part; in the primary deslagging part, the hole on the driving part is larger than the hole on the driven part; in the second-stage deslagging part, the hole on the driving part is larger than the hole on the driven part.

Preferably, the active part and/or the passive part in the primary deslagging part are/is of a bent structure and are used for increasing the contact area and the contact time with liquid.

Preferably, the driving member and/or the driven member in the secondary deslagging part are/is of a structure with a conical tip.

Preferably, a bearing is arranged between the driving part and the driven part in the primary deslagging part; and a bearing is arranged between the driving part and the driven part in the secondary deslagging part, and the bearing is positioned at the conical tip.

Preferably, a baffle is further arranged between the driving part and the driven part in the secondary deslagging part, and the baffle is located on the outer side of the bearing and used for preventing slag from entering the bearing.

According to another aspect of the present invention, there is provided an automatic slag removal system comprising: the low-temperature liquid storage tank is internally provided with a liquid inlet pipeline and a liquid outlet pipeline, and the liquid outlet pipeline is internally provided with a pump; the automatic slag removal device is arranged between the liquid inlet pipeline and the liquid outlet pipeline and is used for removing ice slag in the low-temperature liquid.

Optionally, in the automatic slag removal device, the driven member is fixed at the tail end of the liquid inlet pipeline and/or the front end of the liquid outlet pipeline.

According to another aspect of the invention, the invention provides an automatic slag removal method, which adopts the automatic slag removal system to remove slag, and the method comprises the following steps: the liquid flows under the driving of the pump, and the flowing liquid drives the impeller to rotate; the liquid flows under the driving of the pump, and the flowing liquid drives the impeller to rotate; the impeller drives the slag removing part to rotate through the shaft, and the slag removing part cuts up ice slag under the rotating action.

Further, the impeller drives the driving piece in the slag removing part to rotate relative to the driven piece through the shaft, and ice slag is cut up through holes in the driving piece and the driven piece.

Has the advantages that: the automatic deslagging device in the flowing liquid drives the impeller to rotate through the flowing liquid, and the impeller drives the deslagging part to rotate, so that the deslagging operation in the flowing liquid is effectively completed by the deslagging part under the rotation action. The device can be applied to a liquid nitrogen circulating system of the superconducting cable.

The automatic slag removing system and the method of the invention utilize the low-temperature liquid to flow and drive the paddle in the process of removing the ice, generate power to drive the slag removing part to remove the slag, do not need to open the original sealed space in the whole process, do not influence the parameters of the original system such as vacuum degree, temperature, pressure and the like, are suitable for one-time installation and are lifelong, can effectively remove the ice slag existing in the low-temperature flowing liquid, can solve the influence of the ice slag on the pump body, and further can remove the threat of the ice slag on the whole liquid nitrogen circulating system.

Drawings

FIG. 1 is a schematic structural view of an automatic slag removal device in a flowing liquid according to an embodiment of the present invention;

FIG. 2 is a disassembled view of an automatic slag removal device in a flowing liquid in accordance with an embodiment of the present invention;

FIG. 3 is an outside 3D schematic view of the active part of the primary dross removal portion of an embodiment of the invention;

FIG. 4 is an inside 3D schematic view of the active part of the primary dross removal portion of an embodiment of the invention;

FIG. 5 is a schematic plan view of a primary dross removal portion according to an embodiment of the invention;

FIG. 6 is a schematic structural diagram of a driving part of a secondary deslagging part in the embodiment of the invention;

FIG. 7 is a schematic structural view of a driven member of the secondary deslagging portion in accordance with the embodiment of the invention;

FIG. 8 is a schematic view showing the connection between the driving member and the driven member in the secondary deslagging part according to the embodiment of the invention;

FIG. 9 is a diagram illustrating the deslagging process and effect of the automatic deslagging device in the flowing liquid according to the embodiment of the invention;

FIG. 10 is a schematic structural diagram of an automatic slag removal system according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a liquid nitrogen circulating pipe with a strainer mounted at the front end thereof;

FIG. 12 is a schematic view of the installation of the driving member and the driven member of the automatic slag removal system according to the embodiment of the invention.

In fig. 1-12, 10 impeller, 11 shaft, 20 primary deslagging part, 21 driving part in primary deslagging part, 22 driven part in primary deslagging part, 30 secondary deslagging part, 31 driving part in secondary deslagging part, 32 driven part in secondary deslagging part, 33 baffle, 50 bearing, 400 low-temperature liquid storage tank, 410 liquid inlet pipeline, 420 liquid outlet pipeline, 430 liquid nitrogen circulating pump, 500 filter screen, 600 transmission shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an automatic slag removal device in flowing liquid, which comprises: an impeller 10, and a slag removing part connected to the impeller 10 via a shaft 11. Wherein, the impeller 10 is driven by flowing liquid to rotate, and drives the deslagging part to rotate through a shaft 11; the slag removing part is used for passing through liquid and cutting slag in the liquid under the rotation action. It should be noted that the device can be used not only for removing ice slag in low-temperature flowing liquid, but also for removing other broken slag in the liquid. Furthermore, be provided with the hole on the slagging-off portion, the hole edge is provided with the blade, cuts up the sediment in the liquid through the blade of hole edge under the rotation effect. More preferably, the deslagging portion comprises a curved structure to increase the contact area and contact time with the liquid, the curved structure is provided with a plurality of holes through which the liquid can pass, and the edge of each hole is provided with a firm blade for chopping the ice slag.

In an alternative embodiment, the dross removal section includes a primary dross removal section 20 and a secondary dross removal section 30. Fig. 1 schematically shows the structure of an automatic slag removal device in flowing liquid according to the present invention, as shown in fig. 1, the primary slag removal part 20 and the secondary slag removal part 30 each include an active part and a passive part that are sleeved together, holes are provided on the active part and the passive part, and the edges of the holes are provided with blades, the active part in the primary slag removal part 20 is rotatable relative to the passive part in the primary slag removal part 20, and the active part in the secondary slag removal part 30 is rotatable relative to the passive part in the secondary slag removal part 30; the impeller 10 is driven by the flowing liquid to rotate, and drives the driving parts of the primary deslagging part 20 and the secondary deslagging part 30 to rotate through the shaft 11. The device drives impeller 10 to rotate through flowing liquid, and impeller 10 drives driving part to rotate through shaft 11, thereby making driving part rotate relatively driven part, simultaneously through the blade edge at driving part and driven part hole edge, accomplish the slagging-off operation in the flowing liquid effectively. In addition, the automatic slag removal device in the embodiment firstly carries out primary slag removal operation and then carries out secondary slag removal operation, thereby further improving the slag removal effect of the device.

The structure for driving the deslagging unit according to the present invention is not limited to the structure and shape of the impeller 10 according to the present invention, and may be a rotary drive member having another structure so as to generate the most suitable kinetic energy in the liquid without affecting the flow of the liquid.

The apparatus of the present invention uses the impeller 10 to generate kinetic energy under the driving of the flowing liquid to drive the deslagging unit, which is not limited to the two-stage deslagging operation, and a three-stage deslagging unit, a four-stage deslagging unit, and the like may be provided. The structure of the other-stage deslagging part can be the same as or different from that of the primary deslagging part 20 or the secondary deslagging part 30. For example, the primary deslagging part 20 and the secondary deslagging part 30 can be used as a group, and multiple groups are arranged at intervals according to requirements, so that a multi-stage deslagging part is formed, and further, the effective deslagging effect is achieved.

In the present invention, the material used for each structure is a material having sufficient impact resistance, and when used for deicing slag in a low-temperature resistant flowing liquid, the material is also required to have sufficient low-temperature resistance.

The specific arrangement order of the impeller 10 and the deslagging portion is not particularly limited, and for example, as shown in fig. 1, the impeller 10 may be disposed at the front end of the deslagging portion, but of course, other methods, such as disposing at the rear end of the deslagging portion, may be adopted so as to generate kinetic energy under the driving of the flowing liquid and drive the deslagging portion.

In the invention, the driving pieces in the primary deslagging part 20 and the secondary deslagging part 30 are connected with the impeller 10 through the shaft 11 and can rotate at the same angle with the impeller 10. The driving part and the driven part are sleeved together and break slag through the blade on the hole. Specifically, the driven members may be fixed, for example, as shown in fig. 1, the driven members are respectively fixed on the pipeline, and the driving member is driven by the impeller 10 to rotate relative to the driven members, so as to perform the slag crushing operation through the upper blade of the hole; it should be noted that the driven member is not limited to be fixedly mounted, as long as the driving member and the driven member rotate relatively, for example, the driven member and the driving member may rotate in opposite directions to achieve the purpose of cutting ice residue.

In an alternative embodiment, the holes in the primary dross removal portion 20 are larger than the holes in the secondary dross removal portion 30. Furthermore, the hole on the driving part in each deslagging part is larger than the hole on the driven part. The invention adopts the design, which is more beneficial to the large-area contact with the ice slag in the liquid, and the like, thereby better removing the slag.

Fig. 2 schematically shows a disassembled view of the automatic slag removing device, as shown in fig. 2, in the primary slag removing part 20, a bearing 50 is arranged between the driving part 21 and the driven part 22 in the primary slag removing part, and the driving part and the driven part are contacted through the bearing 50, so that the resistance can be reduced, and the driving part can rotate more smoothly. And a bearing 50 is also arranged between the driving part 31 and the driven part 32 of the secondary deslagging part and is connected by adopting the bearing 50. Fig. 8 schematically shows a connection structure of the driving member 31 and the driven member 32 in the secondary deslagging portion, as shown in fig. 8, the bearing 50 can be sleeved on the conical tip portion of the driven member 32, and then the driven member 32 and the bearing 50 are sleeved into the driving member 31 together, so that the driving member 31 and the driven member 32 in the secondary deslagging portion can rotate relatively.

In an alternative embodiment, as shown in fig. 8, a baffle 33 is further disposed between the driving member 31 and the driven member 32 of the secondary deslagging portion, and the baffle 33 is located outside the bearing 50 to prevent fine ice slag from infiltrating into the ball tracks of the bearing 50 and prevent the whole structure from operating. The bearing 50 is arranged at the conical tip where no holes may be provided to prevent the bearing 50 from coming into contact with the liquid. The conical tip structure of the driving member 31 also serves to prevent the bearing 50 from coming into direct contact with the liquid.

In the present invention, the primary slag removing part 20 may be provided in a bent structure, and the secondary slag removing part 30 may be provided in a structure having a tapered tip. As shown in fig. 1-2 of the present invention, the structures of the driving member and the driven member in each slag removing part may be the same, but are not limited thereto, and may be different, for example, the driving members in the primary slag removing part 20 and the secondary slag removing part 30 may be knife-shaped structures.

Fig. 3 to 5 schematically show the structure of the primary slag removing part 20. As shown in fig. 3 to 5, in the primary deslagging portion 20, both the driving member and the driven member may be provided in a bent structure. The bending design can lead ice slag in low-temperature liquid nitrogen to stay in the structure for a longer time, and lead ice slag to contact and be ground in a larger area. Specifically, as shown in fig. 3-4, the groove structure may be a groove-shaped structure, the direction of the opening of the groove is opposite to the flowing direction of the liquid, the groove-shaped structure includes an inner bottom and a side wall, the side wall is inclined outwards to collect more ice residue in the liquid and make the ice residue concentrated towards the inner bottom, the inner bottom is convex towards the opening direction to form a curved surface, and the contact area and the crushing time of the ice residue are increased, that is, a bending structure with a cross section like a 3 shape as shown in fig. 5 is formed, which includes three bending points, but not limited thereto, a bending structure including a plurality of bending points may be formed, as long as the contact area and the contact time with the ice residue and the like in the liquid are increased. Further, the bending point is provided with arc transition to avoid accumulating slag. As shown in fig. 3 to 5, the driving member and the shaft 11 may be integrally formed as a structure, and then the shaft 11 and the impeller 10 are fixedly coupled, but not limited thereto.

Fig. 6-7 schematically show the structure of the driving member and the driven member in the secondary deslagging portion 30, respectively, as shown in fig. 6-7, and in the secondary deslagging portion 30, both the driving member and the driven member are configured to have a tapered tip structure, as shown in fig. 6-7, or the driving member and the driven member may be integrally configured to have a tapered structure, respectively. The tip of the conical structure is disposed toward the primary slag removing part 20, and the secondary slag removing part 30 may be connected with the primary slag removing part and the impeller 10 through a transmission shaft 600 to realize rotation at the same angle. The secondary deslagging portion 30 is arranged in a conical structure, so that ice slag does not have more time to contact with the secondary deslagging portion 30, and ice slag in liquid discharged from the secondary deslagging portion 30 is reduced.

Fig. 10 schematically shows the structure of an automatic slag removal system according to the present invention, as shown in fig. 10, the automatic slag removal system includes a low-temperature liquid storage tank 400 and the automatic slag removal device, wherein a liquid inlet pipe 410 and a liquid outlet pipe 420 are disposed in the low-temperature liquid storage tank 400, and a pump is disposed in the liquid outlet pipe 420; the automatic slag removing device is arranged in the low-temperature liquid storage tank 400, is specifically arranged between the liquid inlet pipeline 410 and the liquid outlet pipeline 420, and is used for removing ice slag in the low-temperature liquid.

Fig. 9 schematically illustrates a deslagging process of the automated deslagging system. As shown in fig. 9, the automatic slag removal method provided by the invention specifically comprises the following steps: the liquid flows under the driving of the pump, and the flowing liquid drives the impeller 10 to rotate; the impeller 10 drives the driving part to rotate relative to the driven part through the shaft 11, and the holes on the driving part and the driven part cut ice slag.

Fig. 12 schematically shows the installation manner of the driving member and the driven member in the automatic deslagging system, and specifically, as shown in fig. 12, the driven member 22 in the preliminary deslagging portion may be welded and fixed at the end of the liquid inlet pipe 410, and the driven member 32 in the secondary deslagging portion may be welded and fixed at the front end of the liquid outlet pipe 420. When applied to a superconducting cable liquid nitrogen circulation system, the pump may be a liquid nitrogen circulation pump 430 for ensuring circulation of cryogenic liquid in the system. Fig. 11 schematically shows a structure in which a screen 500 is installed at the front end of the pipe of the liquid nitrogen circulation pump 430, which prevents ice debris from entering the circulation pump through the screen 500. The automatic deslagging system of the invention can ensure the normal operation of the circulating pump without installing the filter screen 500.

The working principle of the invention is explained in detail below:

the flowing liquid drives the impeller 10 to rotate, after kinetic energy is generated, the paddle drives the driving part of the primary deslagging part 20 and the secondary deslagging part 30 to rotate, because the liquid flows fast, the ice slag is attached to the deslagging structure, because the hole of the primary deslagging part 20 is larger than that of the secondary deslagging part 30, and meanwhile, the hole of the driving part in the primary deslagging part and the hole of the secondary deslagging part 30 are larger than the corresponding hole of the driven part, therefore, the primary deslagging part 20 removes the large ice slag, or the large ice slag is crushed into small blocks, the ice slag enters the secondary deslagging part 30 along with the liquid flow, and the secondary deslagging part 30 crushes the small blocks into a low-temperature pump body acceptable state.

In the invention, the primary deslagging part 20 is designed into a bending structure, so that more ice slag can be collected, the contact area of the ice slag is increased, and the crushing time is prolonged. The secondary deslagging portion 30 is designed to be conical in structure, no more contact time exists, and the conical design can enable ice slag to flow to a surrounding safety area along the force or to be in contact with the secondary deslagging portion 30 for multiple times to be pulverized into smaller particles mainly considering that liquid entering the cryopump finally is strict and cannot enter the pump body too much even though deslagging is carried out to an acceptable particle size.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.