阅读说明：本技术 一种超深埋地复合管道防渗漏施工用管道连接结构 (Pipeline connection structure is used in construction of compound pipeline antiseep that buries deeply ) 是由 张平 郑妍 陈焕旭 雷敏璐 向明姣 程云彬 周发飞 于 2021-09-10 设计创作，主要内容包括：本申请公开了一种超深埋地复合管道防渗漏施工用管道连接结构,包括支撑板、左连接板、右连接板以及支撑装置、定位装置和密封装置,支撑装置包括挡板、连通槽、支撑座、安装板、卡槽、卡板、连接孔、固定螺栓、伸缩管、限位板、弹簧和保护垫,支撑板的顶端两侧均固定连接挡板,挡板的一端固定连接安装板,安装板的内部开设有卡槽。本申请使左连接板一端的连接环与连接槽对齐,将密封环放置在两个连接块之间的密封槽,然后将左连接板和右连接板通过定位螺栓和定位孔固定,从而将左连接板与右连接板的位置固定,通过卡合连接的连接环和连接槽增强左连接板与右连接板的密封,通过密封环和密封槽进一步加强左连接板和右连接板的密封。(The application discloses bury ground composite pipe antiseep pipeline connection structure for construction in ultra-deep, including backup pad, left connecting plate, right connecting plate and strutting arrangement, positioner and sealing device, strutting arrangement includes baffle, intercommunication groove, supporting seat, mounting panel, draw-in groove, cardboard, connecting hole, fixing bolt, flexible pipe, limiting plate, spring and protection pad, the equal fixed connection baffle in top both sides of backup pad, the one end fixed connection mounting panel of baffle, the draw-in groove has been seted up to the inside of mounting panel. This application makes the go-between and the spread groove of left connecting plate one end align, place the seal groove between two connecting blocks with the sealing ring, then it is fixed with left connecting plate and right connecting plate through positioning bolt and locating hole, thereby with the rigidity of left connecting plate and right connecting plate, go-between and spread groove reinforcing left connecting plate and the sealed of right connecting plate through the block is connected, further strengthens the sealed of left connecting plate and right connecting plate through sealing ring and seal groove.)

1. The utility model provides a compound pipeline connection structure is used in antiseep construction of burying deeply which characterized in that: comprises a supporting plate (1), a left connecting plate (13), a right connecting plate (14), a supporting device, a positioning device and a sealing device;

the supporting device comprises a baffle (2), a communicating groove (3), a supporting seat (4), a mounting plate (5), a clamping groove (6), a clamping plate (7), a connecting hole (8), a fixing bolt (9), an extension pipe (24), a limiting plate (25), a spring (26) and a protection pad (27), wherein the baffle (2) is fixedly connected to two sides of the top end of the supporting plate (1), one end of the baffle (2) is fixedly connected with the mounting plate (5), and the clamping groove (6) is formed in the mounting plate (5);

the positioning device comprises an adjusting hole (10), an adjusting bolt (11), a movable seat (12), a connecting block (15), a sealing groove (16) and a sealing ring (17), the adjusting hole (10) is formed in the baffle (2), the adjusting bolt (11) is in threaded connection with the inner portion of the adjusting hole (10), and one end of the adjusting bolt (11) is rotatably connected with the movable seat (12);

the sealing device comprises a fixing flange (18), a pipeline body (19), positioning holes (20), positioning bolts (21), a connecting ring (22) and connecting grooves (23), the positioning holes (20) are formed in the left connecting plate (13) and the right connecting plate (14), and the connecting ring (22) is fixedly connected to one side of the inner portion of the left connecting plate (13).

2. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the clamping plate (7) is connected to the inner portion of the clamping groove (6) in a clamped mode, a connecting hole (8) is formed in the clamping plate (7), and the clamping plate (7) is fixedly connected to the side wall of the top end of the supporting seat (4).

3. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the mounting plate is characterized in that the inner part of one end of the mounting plate (5) is in threaded connection with a fixing bolt (9), and the fixing bolt (9) is in threaded connection with a connecting hole (8).

4. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the supporting seat is characterized in that a communicating groove (3) is formed in the supporting seat (4), a pipeline body (19) is sleeved inside the communicating groove (3), and the outer side wall of the pipeline body (19) is connected with a limiting plate (25) in a matched mode.

5. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the inner wall fixed connection of supporting seat (4) is the one end of flexible pipe (24), the other end fixed connection one end of limiting plate (25) of flexible pipe (24), flexible pipe (24) are two sections pipe box-packed and form.

6. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the limiting plate (25) is an arc-shaped plate, one end of the limiting plate (25) is fixedly connected with a protection pad (27), the other end of the limiting plate (25) is fixedly connected with one end of a spring (26), and the other end of the spring (26) is fixedly connected with the inner wall of the supporting seat (4).

7. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the equal fixed connection connecting block (15) of one end of left side connecting plate (13) and right connecting plate (14), seal groove (16) have been seted up to the inside of connecting block (15), sealing ring (17) are connected to the inside block of seal groove (16).

8. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the positioning holes (20) in the left connecting plate (13) and the right connecting plate (14) are in threaded connection with positioning bolts (21), and the positioning bolts (21) penetrate through the connecting part of the left connecting plate (13) and the right connecting plate (14).

9. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: the utility model discloses a pipeline, including right side connecting plate (14), connecting groove (23) have been seted up to the one end lateral wall inside of right side connecting plate (14), go up connecting ring (22) is connected in the inside cooperation of connecting groove (23), the inside of go up connecting ring (22) is provided with pipeline body (19), the inside center of left connecting plate (13) and right connecting plate (14) is run through in pipeline body (19), pipeline body (19) are through mounting flange (18) and bolt threaded connection at the one end lateral wall of left connecting plate (13) and right connecting plate (14).

10. The pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline according to claim 1, characterized in that: one end of the movable seat (12) is an inclined plane, the movable seat (12) is matched with the connecting block (15), the movable seat (12) is connected to the top end of the supporting plate (1) in a sliding mode, and the number of the supporting plates (1) is two.

Technical Field

The application relates to the technical field of pipelines, in particular to a pipeline connecting structure for anti-leakage construction of an ultra-deep buried composite pipeline.

Background

The pipe connection refers to connecting the prefabricated pipe sections into a complete system according to the requirements of design drawings, and different connection methods are selected according to the materials of the used pipes during construction. The common steel pipes are connected by screw thread, flange, welding, socket joint, pipe bonding, etc.

The existing pipeline connecting structure has poor pressure resistance, is not easy to prevent leakage when the ultra-deep buried pipeline is constructed, and is not easy to disassemble and assemble in a common pipeline connecting structure, thereby influencing construction and use. Therefore, the pipeline connecting structure for the anti-leakage construction of the ultra-deep buried composite pipeline is provided aiming at the problems.

Disclosure of Invention

The utility model provides a compound pipeline connection structure for antiseep construction of burying deeply is used for solving current pipeline connection structure compressive capacity relatively poor in this embodiment, when carrying out the construction of burying deeply underground pipeline, is difficult for the antiseep, and general pipeline connection structure is easy dismouting not to influence the problem of construction and use.

According to one aspect of the application, a pipeline connecting structure for anti-leakage construction of an ultra-deep buried composite pipeline is provided, and comprises a supporting plate, a left connecting plate, a right connecting plate, a supporting device, a positioning device and a sealing device;

the supporting device comprises a baffle, a communicating groove, a supporting seat, a mounting plate, a clamping groove, a clamping plate, a connecting hole, a fixing bolt, a telescopic pipe, a limiting plate, a spring and a protective pad, wherein the baffle is fixedly connected to two sides of the top end of the supporting plate, one end of the baffle is fixedly connected with the mounting plate, and the clamping groove is formed in the mounting plate;

the positioning device comprises an adjusting hole, an adjusting bolt, a movable seat, a connecting block, a sealing groove and a sealing ring, the inside of the baffle plate is provided with the adjusting hole, the inside of the adjusting hole is in threaded connection with the adjusting bolt, and one end of the adjusting bolt is rotatably connected with the movable seat;

the sealing device comprises a fixing flange, a pipeline body, positioning holes, positioning bolts, a connecting ring and a connecting groove, the positioning holes are formed in the left connecting plate and the right connecting plate, and the connecting ring is fixedly connected to one side of the inside of the left connecting plate.

Furthermore, the inside block of draw-in groove connects the cardboard, the connecting hole has been seted up to the inside of cardboard, cardboard fixed connection is at the top lateral wall of supporting seat.

Further, the inside screw thread of one end of mounting panel connects fixing bolt, fixing bolt threaded connection connecting hole.

Further, a communicating groove is formed in the supporting seat, a pipeline body is sleeved in the communicating groove, and the outer side wall of the pipeline body is connected with the limiting plate in a matched mode.

Further, the inner wall of supporting seat fixed connection is flexible one end of pipe, the other end fixed connection limiting plate's of flexible pipe one end, flexible pipe is two sections pipe box-packed formation.

Further, the limiting plate is an arc-shaped plate, one end of the limiting plate is fixedly connected with the protection pad, the other end of the limiting plate is fixedly connected with one end of the spring, and the other end of the spring is fixedly connected with the inner wall of the supporting seat.

Further, the equal fixed connection connecting block of one end of left side connecting plate and right connecting plate, the seal groove has been seted up to the inside of connecting block, the inside block of seal groove connects the sealing ring.

Furthermore, the positioning holes in the left connecting plate and the right connecting plate are in threaded connection with positioning bolts, and the positioning bolts penetrate through the connecting part of the left connecting plate and the right connecting plate.

Furthermore, the connecting groove is formed in the side wall of one end of the right connecting plate, the connecting ring is connected with the connecting groove in a matched mode inside the connecting groove, a pipeline body is arranged inside the connecting ring, the pipeline body penetrates through the center inside the left connecting plate and the right connecting plate, and the pipeline body is connected to the outer side wall of one end of the left connecting plate and the outer side wall of one end of the right connecting plate through fixing flanges and bolts in a threaded mode.

Further, one end of the movable seat is an inclined plane, the movable seat is connected with the connecting block in a matched mode, the movable seat is connected to the top end of the supporting plate in a sliding mode, and the number of the supporting plates is two.

Through the above-mentioned embodiment of this application, adopted strutting arrangement, positioner and sealing device, it is relatively poor to have solved current pipe connection structure compressive capacity, when carrying out the construction of ultra-deep buried pipeline, is difficult for the antiseep, and the not easy dismouting of general pipe connection structure to influence construction and problem of use.

Drawings

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

FIG. 1 is a schematic overall perspective view of an embodiment of the present application;

FIG. 2 is a schematic overall structure diagram of an embodiment of the present application;

fig. 3 is an enlarged view of a portion a in fig. 2 according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a right connecting plate, a connecting block and a fixing flange according to an embodiment of the present application.

Fig. 5 is a schematic position diagram of the supporting seat, the telescopic tube, the limiting plate, the spring and the protection pad according to an embodiment of the present application.

Fig. 6 is a schematic position diagram of the supporting seat, the clamping plate and the connecting hole according to an embodiment of the present application.

In the figure: 1. the backup pad, 2, the baffle, 3, the intercommunication groove, 4, the supporting seat, 5, the mounting panel, 6, the draw-in groove, 7, the cardboard, 8, the connecting hole, 9, fixing bolt, 10, the regulation hole, 11, adjusting bolt, 12, the movable seat, 13, left connecting plate, 14, right connecting plate, 15, the connecting block, 16, the seal groove, 17, the sealing ring, 18, mounting flange, 19, the pipeline body, 20, the locating hole, 21, positioning bolt, 22, the go-between, 23, the spread groove, 24, the flexible pipe, 25, the limiting plate, 26, the spring, 27, the protection pad.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. 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 application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The pipeline connecting structure in the embodiment can be suitable for various ultra-deep buried composite pipelines, for example, the following pipeline connecting structure is provided in the embodiment, and the pipeline connecting structure in the embodiment can be used for connecting the following composite pipelines.

A high-cost-performance stainless steel composite pipeline is composed of thin-wall stainless steel, an insulating fixing layer, a pressure-bearing reinforcing layer and an outer corrosion-resistant layer which are sequentially arranged from inside to outside, wherein the insulating fixing layer and the outer corrosion-resistant layer are connected through riveting through the pressure-bearing reinforcing layer.

Wherein the thin-wall stainless steel is selected from any one of 304 stainless steel, 321 stainless steel and 316L stainless steel.

The insulating fixing layer is selected from any one of polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene and polybutylene.

The pressure-bearing reinforced layer is woven by high-pressure-resistance and tensile fiber/alloy wire, the tensile fiber is selected from glass fiber, and the alloy wire is selected from any one of galvanized steel wire and copper-plated steel wire; or, the pressure-bearing reinforcing layer adopts a steel pipe, and the material of the steel pipe is selected from any one of carbon steel, galvanized steel and alloy steel.

The outer anticorrosive layer is selected from any one of polypropylene, polyethylene and polyvinyl chloride.

The thickness of the thin-wall stainless steel is 0.25-2mm, the thickness of the pressure-bearing reinforcing layer is 0.8-7.0mm, the thickness of the insulating fixed layer is 1-12mm, and the thickness of the outer anticorrosive layer is 1-200 mm.

Of course, the present embodiment can also be used for other pipe connections. Here, description is not repeated, and the pipe connection structure according to the embodiment of the present application is described below.

Referring to fig. 1-6, a pipeline connecting structure for anti-leakage construction of an ultra-deep buried composite pipeline comprises a supporting plate 1, a left connecting plate 13, a right connecting plate 14, a supporting device, a positioning device and a sealing device;

the supporting device comprises a baffle 2, a communicating groove 3, a supporting seat 4, a mounting plate 5, a clamping groove 6, a clamping plate 7, a connecting hole 8, a fixing bolt 9, an extension tube 24, a limiting plate 25, a spring 26 and a protection pad 27, wherein the baffle 2 is fixedly connected to two sides of the top end of the supporting plate 1, one end of the baffle 2 is fixedly connected to the mounting plate 5, and the clamping groove 6 is formed in the mounting plate 5;

the positioning device comprises an adjusting hole 10, an adjusting bolt 11, a movable seat 12, a connecting block 15, a sealing groove 16 and a sealing ring 17, the adjusting hole 10 is formed in the baffle 2, the adjusting bolt 11 is in threaded connection with the inner part of the adjusting hole 10, and one end of the adjusting bolt 11 is rotatably connected with the movable seat 12;

the sealing device comprises a fixing flange 18, a pipeline body 19, positioning holes 20, positioning bolts 21, a connecting ring 22 and a connecting groove 23, the positioning holes 20 are formed in the left connecting plate 13 and the right connecting plate 14, and the connecting ring 22 is fixedly connected to one side of the inside of the left connecting plate 13.

Fix in left connecting plate and right connecting plate respectively under mounting flange and bolt effect through two pipeline bodies, then make the go-between and the spread groove of left connecting plate one end align, place the seal groove between two connecting blocks with the sealing ring, then it is fixed with left connecting plate and right connecting plate through positioning bolt and locating hole, thereby with the rigidity of left connecting plate and right connecting plate, go-between and spread groove reinforcing left connecting plate that connect through the block and the sealing of right connecting plate, further strengthen the sealing of left connecting plate and right connecting plate through sealing ring and seal groove.

A clamping plate 7 is clamped and connected inside the clamping groove 6, a connecting hole 8 is formed inside the clamping plate 7, and the clamping plate 7 is fixedly connected to the side wall of the top end of the supporting seat 4; a fixing bolt 9 is in threaded connection with the inner part of one end of the mounting plate 5, and the fixing bolt 9 is in threaded connection with a connecting hole 8; a communicating groove 3 is formed in the supporting seat 4, a pipeline body 19 is sleeved in the communicating groove 3, and the outer side wall of the pipeline body 19 is connected with a limiting plate 25 in a matched mode; the inner wall of the supporting seat 4 is fixedly connected with one end of an extension tube 24, the other end of the extension tube 24 is fixedly connected with one end of a limiting plate 25, and the extension tube 24 is formed by sleeving two sections of circular tubes; the limiting plate 25 is an arc-shaped plate, one end of the limiting plate 25 is fixedly connected with the protection pad 27, the other end of the limiting plate 25 is fixedly connected with one end of the spring 26, and the other end of the spring 26 is fixedly connected with the inner wall of the supporting seat 4; one end of each of the left connecting plate 13 and the right connecting plate 14 is fixedly connected with a connecting block 15, a sealing groove 16 is formed in the connecting block 15, and a sealing ring 17 is clamped and connected in the sealing groove 16; positioning holes 20 in the left connecting plate 13 and the right connecting plate 14 are both in threaded connection with positioning bolts 21, and the positioning bolts 21 penetrate through the connection part of the left connecting plate 13 and the right connecting plate 14; a connecting groove 23 is formed in the side wall of one end of the right connecting plate 14, the connecting groove 23 is connected with a connecting ring 22 in a matching manner, a pipeline body 19 is arranged in the connecting ring 22, the pipeline body 19 penetrates through the centers of the left connecting plate 13 and the right connecting plate 14, and the pipeline body 19 is in threaded connection with the outer side walls of one ends of the left connecting plate 13 and the right connecting plate 14 through a fixing flange 18 and a bolt; one end of the movable seat 12 is an inclined plane, the movable seat 12 is connected with the connecting block 15 in a matching mode, the movable seat 12 is connected to the top end of the supporting plate 1 in a sliding mode, and the number of the supporting plates 1 is two.

When the device is used, firstly, two pipeline bodies 19 to be connected are respectively fixed in a left connecting plate 13 and a right connecting plate 14 under the action of a fixed flange 18 and bolts, then a connecting ring 22 at one end of the left connecting plate 13 is aligned with a connecting groove 23, a sealing ring 17 is placed in a sealing groove 16 between the two connecting blocks 15, then the left connecting plate 13 and the right connecting plate 14 are fixed through a positioning bolt 21 and a positioning hole 20, so that the positions of the left connecting plate 13 and the right connecting plate 14 are fixed, the sealing of the left connecting plate 13 and the right connecting plate 14 is enhanced through the connecting ring 22 and the connecting groove 23 which are connected in a clamping manner, the sealing of the left connecting plate 13 and the right connecting plate 14 is further enhanced through the sealing ring 17 and the sealing groove 16, the adjusting bolt 11 and an adjusting hole 10 rotate in a threaded manner through rotating the adjusting bolt 11, the adjusting bolt 11 pushes a movable seat 12 which is connected in a rotating manner to move, and the movable seat 12 abuts against the connecting blocks 15 at one ends of the left connecting plate 13 and the right connecting plate 14, strengthen left connecting plate 13 and right connecting plate 14's connection then, then pass through cardboard 7 with the inside draw-in groove 6 block of mounting panel 5 with supporting seat 4, through 9 threaded connection mounting panel of fixing bolt 5 and cardboard 7, then with the rigidity of supporting seat 4, through extrusion limiting plate 25, limiting plate 25 drives the compression of spring 26, flexible pipe 24 shrink, then make the one end of pipeline body 19 pass intercommunication groove 3 and be located between two limiting plates 25, loosen limiting plate 25, limiting plate 25 drives protection pad 27 and pastes the lateral wall at pipeline body 19 under the spring 26 elastic force effect, then support for the pipeline provides, through backup pad 1, baffle 2 and supporting seat 4 provide the protection for the pipe connection department, and convenient use.

The application has the advantages that:

1. the sealing structure is simple to operate, the two pipeline bodies are fixed in the left connecting plate and the right connecting plate under the action of the fixing flange and the bolts respectively, then the connecting ring at one end of the left connecting plate is aligned with the connecting groove, the sealing ring is placed in the sealing groove between the two connecting blocks, then the left connecting plate and the right connecting plate are fixed through the positioning bolts and the positioning holes, so that the positions of the left connecting plate and the right connecting plate are fixed, the sealing of the left connecting plate and the right connecting plate is enhanced through the connecting ring and the connecting groove which are connected in a clamping manner, and the sealing of the left connecting plate and the right connecting plate is further enhanced through the sealing ring and the sealing groove;

2. the structure is reasonable, the adjusting bolt and the adjusting hole are rotated in a threaded manner by rotating the adjusting bolt, the adjusting bolt pushes the movable seat which is connected in a rotating manner to move, the movable seat abuts against the connecting blocks at one ends of the left connecting plate and the right connecting plate, then the connection between the left connecting plate and the right connecting plate is enhanced, then the supporting seat is clamped with the clamping groove in the mounting plate through the clamping plate, the mounting plate and the clamping plate are connected through the fixing bolt in a threaded manner, and then the position of the supporting seat is fixed;

3. this application is rational in infrastructure, and through the extrusion limiting plate, the limiting plate drives the spring compression, and flexible tub of shrink, then the one end that makes the pipeline body passes the intercommunication groove and lies in between two limiting plates, loosens the limiting plate, and the limiting plate drives the protection pad under the spring force effect and pastes tightly the lateral wall at the pipeline body, provides the support then for the pipeline, provides the protection, convenient to use for the pipe connection department through backup pad, baffle and supporting seat.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.