阅读说明：本技术 带阻水结构的结晶器 (Crystallizer with water blocking structure ) 是由 钱亮 谢长川 李富帅 郭春光 谭杜 韩占光 周干水 于 2020-04-21 设计创作，主要内容包括：本发明公开了一种带阻水结构的结晶器。其包括结晶器本体水套,以及装配于其内部的铜管和套在铜管外的铜管外部水套,在所述铜管外部水套和所述结晶器本体水套之间的间隙内,环绕所述铜管外部水套周向设置有阻水结构,所述阻水结构固定在所述铜管外部水套的外侧或所述结晶器本体水套的内侧。本发明通过在铜管外部水套和结晶器本体水套的间隙内设置阻水结构,降低了结晶器的加工精度,保证冷却水仅在水槽内流通,解决了在无法保证间隙高精度的情况下结晶器传热效果不好的问题,且本发明具有装配简单又快速的优点。(The invention discloses a crystallizer with a water-blocking structure. The crystallizer comprises a crystallizer body water jacket, a copper pipe assembled inside the crystallizer body water jacket and a copper pipe external water jacket sleeved outside the copper pipe, wherein a water blocking structure is arranged in a gap between the copper pipe external water jacket and the crystallizer body water jacket in a circumferential direction around the copper pipe external water jacket, and the water blocking structure is fixed on the outer side of the copper pipe external water jacket or the inner side of the crystallizer body water jacket. According to the invention, the water blocking structure is arranged in the gap between the water jacket outside the copper pipe and the water jacket of the crystallizer body, so that the processing precision of the crystallizer is reduced, the cooling water is ensured to only circulate in the water tank, the problem of poor heat transfer effect of the crystallizer under the condition that the high precision of the gap cannot be ensured is solved, and the invention has the advantages of simplicity and rapidness in assembly.)

1. The crystallizer with the water blocking structure comprises a crystallizer body water jacket, a copper pipe assembled inside the crystallizer body water jacket and a copper pipe external water jacket sleeved outside the copper pipe.

2. The crystallizer with a water stop structure of claim 1,

the water-blocking structure is made of sealing materials and has deformability, and the water-blocking structure can block cooling water with pressure of at least 2 MPa;

the water-blocking structure is formed by combining one or more of layers, strips and rings.

3. The crystallizer with water blocking structures of claim 2, wherein the water blocking structures are located near the cooling water inlet; the thickness of the water blocking structure is larger than or equal to the gap.

4. The crystallizer with the water blocking structure according to claim 2, wherein a groove is further formed in the inner side of the water jacket of the crystallizer body or the outer side of the water jacket outside the copper pipe, the groove corresponds to the water blocking structure in the height direction, and after assembly, one end of the water blocking structure is located in the groove.

5. The crystallizer with a water blocking structure according to claim 4, wherein the thickness of the water blocking structure is greater than or equal to the sum of the depth of the gap and the groove.

6. The crystallizer with a water blocking structure according to any one of claims 1 to 5, wherein the water blocking structure is shaped like a layer and comprises a layer of deformation part and a layer of fixing part connected with the deformation part, the deformation part is used for filling the gap, the fixing part is used for fixing the water blocking structure in the gap, the deformation part and/or the fixing part have deformation capacity, the maximum length of the water blocking structure in the direction of drawing is not more than the assembly length of the crystallizer, and the minimum length of the water blocking structure is not less than 5 mm.

7. The crystallizer with the water blocking structure according to claim 6, wherein the water blocking structure is a fur-type structure and comprises a fur portion and a hair portion, the fur portion is a fixing portion, the hair portion is a deformation portion, and the water blocking structure is fixedly adhered to the inner side of the water jacket of the crystallizer body through the fur portion.

8. The crystallizer with the water blocking structure as claimed in any one of claims 1 to 5, wherein the water blocking structure is in the shape of a strip and is circumferentially spaced around the outer water jacket of the copper pipe, and the length of the water blocking structure in the direction of pulling blank is not less than 3 mm.

9. The crystallizer with the water blocking structure according to claim 8, wherein the water blocking structure is a rubber strip structure and is fixed to the outer side of the water jacket outside the copper pipe, and the thickness of the water blocking structure is larger than the gap by 1mm to 10 mm.

10. The crystallizer with a water blocking structure according to any one of claims 1 to 5, wherein the water blocking structure is a rubber ring structure.

Technical Field

The invention relates to the technical field of continuous casting equipment, in particular to a crystallizer with a water blocking structure.

Background

The crystallizer is a continuous casting equipment which receives the molten steel from the intermediate tank and makes it solidify into a blank shell according to the specified cross-section shape, is the most critical component of the continuous casting machine, and the structure, material and performance parameters, such as heat transfer effect, play a decisive role in the quality of the casting blank.

Chinese patent CN208960940U discloses a crystallizer copper tube with water channels carved on the outer surface, wherein the water channels for circulating cooling water are carved on the outer surface of the copper tube at intervals, and an external water jacket is further arranged on the outer side of the copper tube.

Chinese patent CN108838352A discloses a crystallizer with a double water jacket structure, which comprises a copper pipe, an external water jacket, and a split water jacket between the copper pipe and the external water jacket, wherein a longitudinal groove is arranged at the periphery of the copper pipe, the external water jacket is installed outside the copper pipe, and the split water jacket is embedded between the external water jacket and the copper pipe to prevent the deformation of the copper pipe.

Chinese patent CN105473253A discloses a crystallizer for continuous casting, which is provided with longitudinal grooves on the outer wall of a copper tube, and is further tightly wrapped with an overlay adhesive on the outer surface of the copper tube immovably to limit the deformation and movement of the copper tube wall, and it is desired that cooling water is circulated in the grooves.

Disclosure of Invention

Based on this, the invention aims to provide a crystallizer with a water blocking structure, so as to solve the problem that the heat transfer effect of the crystallizer in the prior art is not good.

The above purpose is realized by the following technical scheme:

according to one aspect of the invention, the crystallizer with the water blocking structure comprises a crystallizer body water jacket, a copper pipe assembled inside the crystallizer body water jacket, and a copper pipe external water jacket sleeved outside the copper pipe, wherein the water blocking structure is further arranged in a gap between the copper pipe external water jacket and the crystallizer body water jacket and surrounds the copper pipe external water jacket in the circumferential direction, and the water blocking structure is fixed on the outer side of the copper pipe external water jacket or the inner side of the crystallizer body water jacket.

Preferably, the water blocking structure is made of sealing materials and has deformation capacity, and the water blocking structure can block cooling water with pressure of at least 2 MPa.

Preferably, the shape of the water-blocking structure is formed by combining one or more of a layer shape, a strip shape and a ring shape. More preferably, the water blocking structure may be one of a fur type structure, a rubber strip type structure, and an elastic ring type structure.

Preferably, the water blocking structure is located near the cooling water inlet; the thickness of the water blocking structure is larger than or equal to the gap. More preferably, the water blocking structure is fixedly connected by adopting an adhesion mode.

Preferably, a groove is further formed in the inner side of the water jacket of the crystallizer body or the outer side of the water jacket outside the copper pipe, the groove corresponds to the water blocking structure in the height direction, and after assembly, one end of the water blocking structure is located in the groove. More preferably, the thickness of the water blocking structure is greater than or equal to the sum of the gap and the depth of the groove.

Preferably, the shape of the water blocking structure is lamellar, and the water blocking structure comprises a layer of deformation part and a layer of fixing part connected with the deformation part, wherein the deformation part is used for filling the gap, the fixing part is used for fixing the water blocking structure in the gap, the deformation part/the fixing part has deformability, the maximum length of the water blocking structure in the direction along the billet drawing direction is not greater than the assembly length of the crystallizer, and the minimum length of the water blocking structure is not less than 5 mm.

Preferably, the water blocking structure is a fur-type structure and comprises a fur part and a hair part, wherein the fur part is a fixing part, the hair part is a deformation part, and the water blocking structure is fixedly adhered to the inner side of the water jacket of the crystallizer body through the fur part.

Preferably, the shape of the water blocking structure is strip-shaped, the water blocking structure is arranged around the outer water jacket of the copper pipe at intervals in the circumferential direction, and the length of the water blocking structure in the direction along the blank drawing direction is not less than 3 mm.

Preferably, the water blocking structure is a rubber strip type structure and is fixed with the outer side of the water jacket outside the copper pipe, and the thickness of the water blocking structure is larger than the gap by 1-10 mm.

Preferably, the water blocking structure is an elastic ring structure.

Compared with the prior art, the crystallizer with the water blocking structure has the advantages that the water blocking structure is arranged in the gap between the outer water jacket of the copper pipe and the water jacket of the crystallizer body, so that the processing precision of the crystallizer is reduced, the cooling water is ensured to completely circulate in the water tank, the heat transfer effect of the crystallizer is improved, and the use stability of the crystallizer is ensured; the invention has the advantages of simple and quick installation, low processing cost and the like.

Drawings

FIG. 1 is a schematic view showing the structure of a copper tube of a crystallizer in the prior art;

FIG. 2 is a schematic structural view of a copper pipe assembled with a crystallizer body water jacket;

FIG. 3 is a schematic longitudinal sectional view of a crystallizer with a water-blocking structure according to an embodiment of the present invention;

FIG. 4 is a schematic longitudinal sectional view of a crystallizer with a water blocking structure according to the second embodiment of the present invention.

In fig. 1-4, 1 copper tube, 2 water tank, 3 copper tube external water jacket, 4 crystallizer body water jacket, 5 gap, 6 water blocking structure, 61 deformation portion, 62 fixing portion, 7 groove.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments of the present invention. It will be understood in the description that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting.

Fig. 1 schematically shows the structure of a copper tube 1 of a crystallizer in the prior art, as shown in fig. 1, a water tank 2 is carved on the outer wall of the copper tube 1, and a layer of water jacket is also arranged outside the copper tube 1, namely, a copper tube external water jacket 3.

Fig. 2 schematically shows the structure of the assembled copper pipe 1 and crystallizer body water jacket 4, and a copper pipe external water jacket 3 (not shown) is further arranged outside the copper pipe 1, and as shown in fig. 2, a gap 5 for assembly exists inside the crystallizer body water jacket 4 after assembly.

Fig. 3 and 4 schematically show the structure of a crystallizer with a water blocking structure 6 according to a first embodiment and a second embodiment of the present invention, respectively, as shown in fig. 3 and 4, the crystallizer with a water blocking structure 6 according to the present invention includes a crystallizer body water jacket 4, a copper pipe 1 (not shown) assembled inside the crystallizer body water jacket 4, and a copper pipe outer water jacket 3 sleeved outside the copper pipe, and the water blocking structure 6 is arranged around the copper pipe outer water jacket 3 in a gap 5 between the copper pipe outer water jacket 3 and the crystallizer body water jacket 4 in the circumferential direction.

The water blocking structure 6 can be fixedly connected to the outer side of the outer water jacket 3 of the copper pipe or the inner side of the water jacket 4 of the crystallizer body by adopting a bonding mode and the like, and is positioned close to a cooling water inlet. The thickness of the water blocking structure 6 is set to be greater than or equal to the gap 5, and is preferably set to be greater than the gap 5 in order to further improve the water blocking effect. The thickness of the water blocking structure 6 in the present invention means the left-right direction as shown in fig. 3 or 4.

The water blocking structure 6 has the deformation capability, but can block the circulation of cooling water within 2 MPa. On one hand, the machining precision can be reduced by allowing the gap 5 to exist, and meanwhile, the water blocking structure 6 is a non-rigid part and has the deformation capacity, so that the installation of the copper pipe 1 is facilitated; on the other hand, the gap 5 is blocked by the water blocking structure 6, and the cooling water of the crystallizer cannot pass through the gap 5, so that the circulation of the cooling water from the water tank 2 is ensured. The water-blocking structure 6 may be made of a sealing material, which may be a non-metallic material or a composite material, so that the water-blocking structure 6 has an elastic deformation capability, for example, the non-metallic material may be one or a combination of more of rubber, plastic, fiber, fabric, and the like; the composite material can be a composite material formed by fibers and other materials, and can be aerogel felt-polyurethane and the like. Further, the water blocking structure 6 may be a rubber-based elastomer sealing material, a fiber-containing sealing material, a fur-based sealing material, or the like. The elastic modulus of the sealing material of the present invention is not particularly limited as long as it has a capability of blocking at least cooling water within 2 MPa. The water-blocking structure 6 can be in one or more of a layer shape, a strip shape, a ring shape and the like.

In order to further improve the water blocking effect and improve the heat exchange efficiency of the crystallizer, a groove 7 may be disposed on the outer side of the water jacket 3 outside the copper pipe or on the inner side of the water jacket 4 of the crystallizer body, the groove 7 corresponds to the water blocking structure 6 in the height direction, after assembly, one end of the water blocking structure 6 is located in the groove 7, the other end of the water blocking structure is used for fixing, the thickness of the water blocking structure 6 may be greater than or equal to the sum of the depths of the gap 5 and the groove 7, preferably greater than the sum of the depths of the gap 5 and the groove 7, the groove 7 is particularly suitable for the strip-shaped or ring-shaped water blocking structure 6, and the groove 7 may be appropriately disposed when the water jacket thickness is allowed in a layer shape, but the depth of the groove 7 should be smaller than that of the strip-shaped or ring.

The water blocking structure 6 can be made of a proper material according to a specific shape, and for example, the water blocking structure 6 can be a fur type structure, a rubber strip type structure or an elastic ring type structure.

In the fur-type structure, the leather part is a fixed part 62, the fur part is a deformed part 61, and the fur part is a rooting part of the fur and can be fixed by means of sticking and the like. The deformability of the fur-type structure is mainly achieved by the fur, i.e. the gap 5 is filled by the deformable fur, which is convenient to install and can prevent the inflow of cooling water, and the deformation of the structure is relatively large, but the circulation of the cooling water can also be completely blocked. The water blocking structure 6 of the fur type structure is arranged around the axial direction of the gap 5, the length along the blank drawing direction is not more than the assembly length of the crystallizer to the maximum extent, the minimum length is related to the design of fur, the water blocking performance of the fur is strong, and the fur can be set to be shorter than the assembly length of the crystallizer properly, but the shortest length is not less than 5 mm; considering that the copper pipe 1 is a worn part and the crystallizer body water jacket 4 is relatively fixed, the water blocking structure 6 of the fur-type structure is preferably fixed on the inner side of the crystallizer body water jacket 4. The groove 7 can be arranged under the condition that the thickness of the water jacket 3 outside the copper pipe allows, the depth of the groove 7 should be controlled within the range of 0.1-1 mm, and the thickness of the water blocking structure 6 should be larger than or equal to the sum of the depth of the gap 5 and the depth of the groove 7. The water blocking structure 6 of the structure can be one or a plurality of structures arranged up and down at intervals.

In the rubber strip type structure, although the deformation degree is not as good as that of a fur type structure, the rubber strip type structure can improve the easy installation and water blocking effect by arranging strips discontinuously, only needs to be arranged in the gap 5 close to a cooling water inlet, is arranged and surrounds the axial direction of the gap 5, has the length along the blank drawing direction not less than 3mm, and is not more than the assembly length of the crystallizer. The thickness of the water blocking structure 6 is properly larger than that of the gap 5, and the sealing performance is enhanced after the installation is deformed. Considering that the copper pipe 1 is a loss part and the crystallizer body water jacket 4 is relatively fixed, the water-blocking structure 6 is preferably fixed inside the crystallizer body water jacket 4; or, considering that the length of the water blocking structure 6 in the blank drawing direction is relatively short, the water blocking structure 6 can also be fixed on the outer water jacket 3 of the copper pipe, the thickness of the water blocking structure 6 is 1-10 mm larger than the gap 5, grooves 7 matched with the water blocking structure 6 in size are engraved on the inner side of the crystallizer body water jacket 4 at the height position of the corresponding water blocking structure 6, the number of the grooves 7 is multiple, as shown in fig. 4, the right end of the assembled water blocking structure 6 is located in the grooves 7 of the crystallizer body water jacket 4, and therefore the water blocking capacity is further increased. The depth of the groove 7 is approximately equal to the thickness of the water blocking structure 6 to the thickness of the gap 5, the height of the groove 7 is the same as or similar to the length of the water blocking structure 6 along the blank drawing direction, and the width of the groove 7 is the same as or similar to the width of the water blocking structure 6. The rubber strip type structure can be used for arranging a plurality of strips around the periphery of the outer water jacket 3 of the copper pipe discontinuously for one circle, or can be used for arranging a plurality of circles at intervals up and down in a plum blossom shape so as to increase the water blocking effect.

The rubber ring type structure adopts the mode that the end surface of the outer ring is fixed with the inner side of the water jacket 4 of the crystallizer body or the end surface of the inner ring is fixed with the outer side of the water jacket 3 outside the copper pipe, and the width of the rubber ring is slightly larger than the gap 5 so as to improve the water blocking effect. In order to further improve the water blocking effect, a circle of groove 7 can be arranged on the outer side of the outer water jacket 3 of the copper pipe or the inner side of the water jacket 4 of the crystallizer body, and after assembly, the end face of the inner ring or the end face of the outer ring of the rubber ring type structure is positioned in the groove 7. One or more water blocking structures 6 may be provided by using this structure.

The technical solution of the present invention is described in detail below with reference to two specific embodiments and fig. 3-4: