阅读说明：本技术 一种盾构用管片局部耐水压性能检测装置 (Shield constructs with section of jurisdiction local water pressure resistance performance detection device ) 是由 邓如勇 裴利华 林东 张俊龙 乐师军 杨均 杨友彬 周瑞锋 贾艳飞 夏源 于 2021-03-16 设计创作，主要内容包括：本发明公开了一种盾构用管片局部耐水压性能检测装置,包括:支撑部,所述支撑部包括至少两个从管片底部支撑所述管片的支撑柱,至少两个所述支撑柱之间的间距可以调节；水压加载部,所述水压加载部包括倒扣固定在所述管片待检测部位的水压加载杯,所述水压加载杯的杯口端部贴合所述管片的外壁；所述水压加载部包括至少一个水体注入口,所述水体注入口设置于所述水压加载杯的侧壁或顶壁；所述水压加载杯的杯口端部与所述管片的外壁之间为密封连接。本发明的一种盾构用管片局部耐水压性能检测装置,能快速检测所述管片的耐水压性能。(The invention discloses a device for detecting local water pressure resistance of a shield segment, which comprises a supporting part and a detecting part, wherein the supporting part comprises at least two supporting columns for supporting the shield segment from the bottom of the shield segment, and the distance between the at least two supporting columns can be adjusted; the hydraulic loading part comprises a hydraulic loading cup which is fixed on the part to be detected of the duct piece in an inverted buckling manner, and the end part of the cup opening of the hydraulic loading cup is attached to the outer wall of the duct piece; the water pressure loading part comprises at least one water injection port, and the water injection port is arranged on the side wall or the top wall of the water pressure loading cup; the end part of the cup mouth of the hydraulic loading cup is in sealing connection with the outer wall of the duct piece. The device for detecting the local water pressure resistance of the duct piece for the shield can quickly detect the water pressure resistance of the duct piece.)

1. The utility model provides a shield constructs with local water pressure resistance performance detection device of section of jurisdiction which characterized in that, the device includes:

the supporting part comprises at least two supporting columns for supporting the pipe piece from the bottom of the pipe piece, and the distance between the at least two supporting columns can be adjusted;

the hydraulic loading part comprises a hydraulic loading cup which is fixed on the part to be detected of the duct piece in an inverted buckling manner, and the end part of the cup opening of the hydraulic loading cup is attached to the outer wall of the duct piece; the water pressure loading part comprises at least one water injection port, and the water injection port is arranged on the side wall or the top wall of the water pressure loading cup;

the end part of the cup mouth of the hydraulic loading cup is in sealing connection with the outer wall of the duct piece.

2. The device for detecting the local water pressure resistance of the shield segment according to claim 1, wherein the support part further comprises a cushion block, and the cushion block is hinged to the top end of the support column contacting the segment; the top of cushion is the arc, the cushion can for the support column swing to the laminating the arc inner wall of section of jurisdiction.

3. The device for detecting the local water pressure resistance of the shield segment according to claim 1 or 2, wherein the number of the support columns is two, and the upper ends of the two support columns are inclined inwards; the supporting part also comprises an adjusting supporting rod supported on the inner side of the supporting column, and the length of the adjusting supporting rod can be adjusted; when the length of the adjusting support rod is adjusted, the support rod can rotate along the length changing direction of the adjusting support rod based on the bottom end of the support rod as a rotating center.

4. The device for detecting the local water pressure resistance of the segment for the shield as claimed in claim 3, wherein the supporting portion further comprises a chassis, and the bottom ends of the supporting columns are hinged to the chassis.

5. The device for detecting the local water pressure resistance of the segment for the shield as claimed in claim 4, wherein the cushion block is hinged to the support column through a bearing.

6. The device for detecting the local water pressure resistance of the segment for the shield according to claim 5, wherein the adjusting support rod is a hydraulic jack; and the piston end of the hydraulic jack is hinged to the supporting column.

7. The device for detecting the local water pressure resistance of the duct piece for the shield according to claim 1 or 2, wherein the water pressure loading part further comprises a first sealing part, the first sealing part comprises at least one sealing ring, the sealing ring is arranged around the end part of the cup opening of the water pressure loading cup, and a sealing groove for accommodating the sealing ring is formed around the end part of the cup opening of the water pressure loading cup.

8. The apparatus for testing partial water pressure resistance of a segment for a shield according to claim 7, wherein the water pressure loading part further comprises a second sealing part, the second sealing part comprises a wire mesh surrounding the outer edge of the cup mouth of the water pressure loading cup and a consolidation sealing grease consolidated in the space between the wire mesh and the outer wall of the water pressure loading cup; the second sealing portion is located at the periphery of the first sealing portion.

9. The apparatus for testing the local water pressure resistance of a shield segment according to claim 8, wherein the second sealing portion further comprises a sealing grease injection passage for injecting the sealing grease, the sealing grease injection passage being provided in the water pressure loading cup; the sealing grease injection channel enters from the outer side wall of the hydraulic loading cup, passes through the cup body of the hydraulic loading cup and extends out of the end part of the cup opening of the hydraulic loading cup; the sealing grease injection passage is outside the sealing ring.

10. The device for detecting the local water pressure resistance of the segment for the shield according to claim 9, wherein the water pressure loading part further comprises a pressing bracket for reinforcing the water pressure loading cup, and the pressing bracket comprises a cross beam and a pull rod; the cross beam is abutted against the outer wall of the bottom of the water pressure loading cup from top to bottom, one end of the pull rod is fixed on the cross beam, and the other end of the pull rod is tensioned downwards and fixed on the supporting part.

Technical Field

The invention relates to the technical field of shield tunneling, in particular to a device for detecting partial water pressure resistance of a segment for a shield tunneling.

Background

At present, the shield method becomes the most mainstream and important construction method for tunnel construction, and has wide application market and prospect.

The duct piece is used as a permanent supporting structure of the shield method tunnel, and mainly plays a role in supporting surrounding rocks and separating hydraulic connection inside and outside the tunnel in the shield method tunnel engineering. In order to facilitate transportation and assembly, in actual engineering, duct pieces are usually designed into duct piece blocks with different sizes, and during construction, the duct piece blocks with different sizes are assembled into a duct piece ring according to a certain rule through bolts to form a permanent tunnel supporting system. The segment structure determines the segment joint and the grouting pipe, and is a waterproof weak link. At present, researches are mainly carried out on seam water resistance, and through tests and special designs, the waterproof requirement of seam sealing under the condition of ultrahigh water pressure can be met. However, in the construction process of grouting pipe bottom concrete (the concrete between the specially-made pre-buried grouting pipe bottom and the back soil side of the pipe piece), because the secondary grouting needs to be carried out without hole sealing and backfilling, the concrete at the position is thinner (if the thickness of the pipe piece of the conventional subway shield tunnel is 300mm, the thickness of the concrete at the grouting pipe bottom is only 30mm), the stress performance at the position can be weakened due to the nonstandard prefabrication process and transportation process, the pipe bottom concrete is easy to be torn off under the action of high water pressure in the shield construction, so that underground water flows into the shield tunnel, the shield equipment is damaged if the underground water flows into the shield tunnel, and the tunnel and the mechanical equipment are submerged if the underground water flows backwards, and other accidents are caused.

Therefore, how to rapidly detect the water pressure resistance of the concrete at the bottom of the segment grouting pipe is a technical problem which needs to be solved urgently.

Disclosure of Invention

In view of this, the embodiment of the present invention is expected to provide a device for detecting a local water pressure resistance of a segment for a shield, which can quickly detect the water pressure resistance of the segment.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

the embodiment of the invention provides a device for detecting the local water pressure resistance of a duct piece for a shield, which comprises:

the supporting part comprises at least two supporting columns for supporting the pipe piece from the bottom of the pipe piece, and the distance between the at least two supporting columns can be adjusted;

the hydraulic loading part comprises a hydraulic loading cup which is fixed on the part to be detected of the duct piece in an inverted buckling manner, and the end part of the cup opening of the hydraulic loading cup is attached to the outer wall of the duct piece; the water pressure loading part comprises at least one water injection port, and the water injection port is arranged on the side wall or the top wall of the water pressure loading cup;

the end part of the cup mouth of the hydraulic loading cup is in sealing connection with the outer wall of the duct piece.

In the scheme, the supporting part further comprises a cushion block, and the cushion block is hinged to the top end, contacting with the duct piece, of the supporting column; the top of cushion is the arc, the cushion can for the support column swing to the laminating the arc inner wall of section of jurisdiction.

In the scheme, the number of the support columns is two, and the upper ends of the two support columns are inclined inwards; the supporting part also comprises an adjusting supporting rod supported on the inner side of the supporting column, and the length of the adjusting supporting rod can be adjusted; when the length of the adjusting support rod is adjusted, the support rod can rotate along the length changing direction of the adjusting support rod based on the bottom end of the support rod as a rotating center.

In the above scheme, the supporting part further comprises a chassis, and the bottom end of the supporting column is hinged to the chassis.

In the scheme, the cushion block is hinged with the supporting column through a bearing.

In the scheme, the adjusting support rod is a hydraulic jack; and the piston end of the hydraulic jack is hinged to the supporting column.

In the above scheme, the hydraulic loading portion further comprises a first sealing portion, the first sealing portion comprises at least one sealing ring, the sealing ring is arranged around the end portion of the cup opening of the hydraulic loading cup, and a sealing groove surrounding a circle and accommodating the sealing ring is formed in the end portion of the cup opening of the hydraulic loading cup.

In the above scheme, the hydraulic loading part further comprises a second sealing part, and the second sealing part comprises a wire mesh surrounding the outer edge of the cup mouth of the hydraulic loading cup and a consolidation sealing grease consolidated in the space between the wire mesh and the outer wall of the hydraulic loading cup; the second sealing portion is located at the periphery of the first sealing portion.

In the above scheme, the second sealing portion further includes a sealing grease injection passage for injecting the sealing grease, and the sealing grease injection passage is provided in the hydraulic loading cup; the sealing grease injection channel enters from the outer side wall of the hydraulic loading cup, passes through the cup body of the hydraulic loading cup and extends out of the end part of the cup opening of the hydraulic loading cup; the sealing grease injection passage is outside the sealing ring.

In the above scheme, the hydraulic loading part further comprises a pressing bracket for reinforcing the hydraulic loading cup, and the pressing bracket comprises a cross beam and a pull rod; the cross beam is abutted against the outer wall of the bottom of the water pressure loading cup from top to bottom, one end of the pull rod is fixed on the cross beam, and the other end of the pull rod is tensioned downwards and fixed on the supporting part.

According to the device for detecting the local water pressure resistance of the duct piece for the shield, the duct piece is supported by the supporting part, and the water pressure loading part is used for carrying out water pressure loading on the part to be detected of the duct piece, so that the water pressure resistance of the duct piece can be quickly detected.

Other beneficial effects of the embodiments of the present invention will be further described in conjunction with the specific technical solutions in the detailed description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It should be understood that the drawings described below are only a part of the drawings of the embodiments of the present invention, and that other drawings may be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic view of a segment water pressure resistance detection device for a shield according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the hydraulic loading unit of FIG. 1;

FIG. 3 is an enlarged partial schematic view of the first and second seal portions of FIG. 2;

fig. 4 is a schematic top view of fig. 1.

Description of reference numerals:

10, a pipe piece; 101, detecting the part of a duct piece to be detected; 110 support columns; 120 cushion blocks; 130 adjusting the supporting rod; 140 a chassis; 210 hydraulic loading cup; 211 a water injection port; 212 sealing the grease injection passage; 221 a first seal ring; 222 a second seal ring; 223 a first seal groove; 224 a second seal groove; 231 a wire mesh; 232 solidifying and sealing grease; 2411 preparing a steel plate; 2412 preparing square steel; 242 pull the rod.

Detailed Description

Aiming at the problems in the prior art, the embodiment of the invention provides a device for detecting the local water pressure resistance of a duct piece for a shield, which comprises:

the supporting part comprises at least two supporting columns for supporting the pipe piece from the bottom of the pipe piece, and the distance between the at least two supporting columns can be adjusted;

the hydraulic loading part comprises a hydraulic loading cup which is fixed on the part to be detected of the duct piece in an inverted buckling manner, and the end part of the cup opening of the hydraulic loading cup is attached to the outer wall of the duct piece; the water pressure loading part comprises at least one water injection port, and the water injection port is arranged on the side wall or the top wall of the water pressure loading cup;

the end part of the cup mouth of the hydraulic loading cup is in sealing connection with the outer wall of the duct piece.

According to the device for detecting the local water pressure resistance of the duct piece for the shield, the duct piece is supported by the supporting part, and the water pressure loading part is used for carrying out water pressure loading on the part to be detected of the duct piece, so that the water pressure resistance of the duct piece can be quickly detected.

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Also, the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from these embodiments without inventive step, are within the scope of protection of the present invention.

The embodiment provides a device for detecting local water pressure resistance of a duct piece for a shield, which comprises a supporting part and a water pressure loading part, as shown in fig. 1-4; the support part comprises at least two support columns 110 for supporting the tube sheet 10 from the bottom of the tube sheet 10, and the distance between the at least two support columns 110 can be adjusted; the hydraulic loading part comprises a hydraulic loading cup 210 which is fixed on the part 101 to be detected of the duct piece in an inverted manner, and the end part of the cup opening of the hydraulic loading cup 210 is attached to the outer wall of the duct piece 10; the hydraulic loading part comprises at least one water injection port 211, and the water injection port 211 is arranged on the side wall or the top wall of the hydraulic loading cup 210; the end of the mouth of the hydraulic loading cup 210 is hermetically connected with the outer wall of the pipe piece 10.

Here, the segment to be detected 101 may be a place where a grouting pipe of the segment 10 is buried. Of course, other sites to be detected may be used

Here, the spacing between at least two of the support columns 110 may be adjustable for the purpose of: more different sized segments 10 can be accommodated.

Here, the hydraulic loading cup 210 is fixed to the portion 101 to be detected of the duct piece in an inverted manner, that is, the bottom of the hydraulic loading cup 210 is above, the bottom is closed, and the cup opening abuts against the duct piece 10, so that a sealing connection is required between the cup opening and the duct piece 10. In addition, the hydraulic loading cup 210 is fixed on the tube piece 10 besides the reverse buckling, and the position is fixed, and the fixing mode is not limited.

The sealing connection between the mouth end of the hydraulic loading cup 210 and the outer wall of the tube piece 10 can be set according to the required hydraulic pressure, for example, a pressing sealing connection, which is not limited herein.

Here, the pressure generated by the detection is related to the volume of water in the hydraulic loading cup 210, especially the water level, so the rim area and height of the hydraulic loading cup 210 need to be designed according to the detection requirement. However, in practical implementation, operability also needs to be considered, so that in a case that a very high water pressure is needed, gas can be injected into the hydraulic loading cup 210 to increase the water pressure, and the phenomenon that the water body in the hydraulic loading cup 210 is too heavy and the fixation is unstable is avoided. Specifically, the cup mouth area of the hydraulic loading cup is 3-5 times of the area of the part to be detected. The height may be somewhat higher but it is not recommended to fill it with water.

According to an alternative embodiment of the present invention, the supporting portion may further include a spacer block 120, and the spacer block 120 is hinged to the top end of the supporting column 110 contacting the tube sheet 10; the top end of the cushion block 120 is arc-shaped, and the cushion block 120 can swing relative to the supporting column 110 to fit the arc-shaped inner wall of the segment 10. Because the inner wall of the segment 10 is generally arc-shaped, the contact area with the segment 10 can be increased through the arc-shaped cushion blocks 120, the support is more stable, and the contact damage caused by the contact is not easy to generate, so that the method is a better embodiment mode.

Specifically, the cushion block 120 is made of bakelite. Bakelite has certain compressive capacity, can produce a small amount of deformations under the pressure effect, nevertheless can not damage, can not harm the section of jurisdiction yet, and in addition, the frictional resistance on the section of jurisdiction surface of bakelite and concrete material is bigger, and loading hydraulic in-process, the section of jurisdiction is difficult for sliding, is a better implementation mode.

According to an alternative embodiment of the present invention, the number of the supporting columns 110 may be two, and the upper ends of the two supporting columns 110 are both inclined inward; the support part further comprises an adjusting support rod 130 supported at the inner side of the support column 110, and the length of the adjusting support rod 130 can be adjusted; when the length of the adjusting support rod 130 is adjusted, the support post 110 can rotate along the direction of changing the length of the adjusting support rod 130 based on the bottom end of the support post 110 as the rotation center. Two are arranged, the structure is simpler, the stability requirement of the support can be met, and the method is a better implementation mode.

Here, the left adjusting support bar 130 and the support bar 110 in fig. 1 are similar to a herringbone, the support bar 110 is left-falling, the adjusting support bar 130 is right-falling, and when the length of right-falling is adjusted, the left-falling is matched with the left-falling to rotate left and right, so as to adjust the distance between the two support bars 110. The spacing of the two support posts 110 may be set as: two support columns 110 are located at 1/3, 2/3, respectively, of the inner arc length of the tube sheet 10.

In a specific implementation, the supporting columns 110 may be arranged in four, two of which are in a group, and the arrangement of two supporting columns 110 in a group is the same as that of the two supporting columns 110. Two sets of support columns are in the length direction of section of jurisdiction 10, and axial distribution promptly forms four points and supports, and it is more firm to support. The supporting column 110 may be a rectangular square tube, so that it has high strength, strong supporting force, and light weight. Only one set of support posts 110 is shown in fig. 1.

According to an alternative embodiment of the present invention, the supporting portion may further include a bottom plate 140, and the bottom end of the supporting column 110 is hinged to the bottom plate 140; the technical scheme realized by hinging has simpler and more reliable structure, and is a better implementation mode.

Specifically, the support column 110 and the base plate 140 may be hinged by a rolling bearing. The rolling bearing is a standardized component, and is simpler and more reliable to implement. The base plate 140 may be an i-steel rail, a hole is formed in a waist portion of the i-steel rail, and a shaft is inserted for mounting a rolling bearing. If the support columns 110 are two groups, two i-shaped steel rails are also arranged and distributed in the length direction of the duct piece 10, namely, in the axial direction.

According to an alternative embodiment of the present invention, the pad block 120 and the support column 110 may be hinged by a bearing. In particular, the bearing is a rolling bearing, and the implementation is simpler and more reliable, and is a better implementation mode.

According to an alternative embodiment of the present invention, the adjusting support rod 130 may be a hydraulic jack; the piston end of the hydraulic jack is hinged to the support column 110. The hydraulic jack not only can adjust the length, but also has large supporting force, is stable and reliable, and is a better implementation mode.

According to an optional embodiment of the present invention, the hydraulic loading part may further include a first sealing part, the first sealing part includes at least one sealing ring, the sealing ring is circumferentially disposed at the rim end of the hydraulic loading cup 210, and the rim end of the hydraulic loading cup 210 is provided with a circumferential sealing groove for accommodating the sealing ring. Thus, the sealing structure is simple and effective, and is a better embodiment.

Specifically, the sealing ring is an O-shaped rubber sealing ring. In this embodiment, two sealing rings are provided, namely a first sealing ring 221 and a second sealing ring 222, which are arranged in concentric circles. The two sealing grooves, namely a first sealing groove 223 and a second sealing groove 224, are formed in the end portion of the cup mouth of the hydraulic loading cup 210, and are also arranged in concentric circles.

According to an alternative embodiment of the present invention, the hydraulic loading part may further include a second sealing part, the second sealing part includes a wire mesh surrounding the rim of the hydraulic loading cup 210 and a fixed sealing grease 232 fixed to the space between the wire mesh 231 and the outer wall of the hydraulic loading cup 210; the second sealing portion is located at the periphery of the first sealing portion. Therefore, the sealing capacity is further increased on the basis of the sealing ring, the sealing ring is more reliable, and higher test requirements, such as a failure test, can be met, so that the sealing ring is a better embodiment mode. Specifically, the wire mesh 231 is made of steel wires, is in the same direction, and is stacked in multiple layers, similar to a wire brush. The spacing between the wires is determined by the viscosity of the consolidation sealing grease 232, and is as close as possible. More specifically, since the outer wall of the segment 10 has a slight curvature, the wire mesh 231 is slightly inclined downward to secure a sealing effect.

Here, the second sealing portion is located at the periphery of the first sealing portion, and is configured according to the principle of two sealing members, the O-ring of the first sealing portion has a strong pressure-bearing capacity but may have a small amount of leakage, and the consolidated sealing grease 232 has a better sealing performance but a poor pressure-bearing capacity, so that a small amount of leakage water is prevented from being blocked at the periphery.

According to an alternative embodiment of the present invention, the second sealing portion may further include a sealing grease injection passage 212 for injecting the sealing grease, the sealing grease injection passage 212 being opened to the hydraulic loading cup 210; the sealing grease injection channel 212 enters from the outer side wall of the hydraulic loading cup 210, passes through the cup body of the hydraulic loading cup 210 and extends out from the end of the cup mouth of the hydraulic loading cup 210; the sealing grease injection passage 212 is outside the sealing ring. This facilitates the injection of sealing grease for consolidation after the hydraulic loading cup 210 is inverted onto the segment 10, forming consolidated sealing grease 232. In particular, the sealing grease may be an industrial butter. The industrial grease is injected by a high pressure grease gun, and is gradually solidified after flowing onto the wire mesh 231, thereby forming a solidified sealing grease 232. The cured sealing grease 232 and the wire mesh 231 together form a second seal.

According to an alternative embodiment of the present invention, the hydraulic loading part may further include a pressing bracket reinforcing the hydraulic loading cup 210, the pressing bracket including a beam and a pull rod 242; the cross beam is abutted against the outer wall of the bottom of the hydraulic loading cup 210 from top to bottom, one end of the pull rod 242 is fixed on the cross beam, and the other end of the pull rod is tensioned downwards and fixed on the supporting part. Specifically, the hold-down bracket, when installed, creates a downward pull force through the pull rod 242 to hold the hydraulic loading cup 210 tightly against the segment 10. The water pressure loading cup 210 is pressed through the pressing support, so that the structure is simple, the installation and the disassembly are convenient, and the water pressure loading cup is a better implementation mode.

Specifically, the cross beam may include a steel plate 2411 and a square steel 2412, a bottom end of the steel plate 2411 abuts against an outer wall of the bottom of the hydraulic loading cup 210, the square steel 2412 is above the steel plate 2411 and extends out of the steel plate 2411 in a horizontal direction, and the square steel 2412 is fixedly connected to the pull rod 242. Thus, the hydraulic loading cup 210 is pressed against the segment 10 by the tie rod 242, square steel 2412 and steel plate 2411. The contact area of the steel plate 2411 is relatively large, so that the hydraulic loading cup 210 can be prevented from being damaged.

In addition, threaded holes can be preset in the outer wall of the bottom of the hydraulic loading cup 210, so that the steel plate 2411 and the hydraulic loading cup 210 can be fixed by screws, and thus the hydraulic loading cup 210 is not only pressed by the tensile force of a pull rod, but also directly fixed, and the position is more stable, which is a better implementation mode.

More specifically, the pulling rod 242 may be a bolt fixed to the supporting portion by a nut, and the downward pulling force may be generated by tightening the nut.

In order to further understand the present invention, the following describes the use steps of the device for detecting the water pressure resistance of the segment for the shield according to the embodiment of the present invention:

(1) and installing and debugging the supporting part on the ground on a construction site.

(2) And starting the hydraulic jack, adjusting the position of the supporting column 110 to enable the top of the supporting column 110 to be located at 1/3 and 2/3 of the inner arc length of the segment 10 to be detected, and locking the jack.

(3) The segment 10 to be detected is hoisted to the supporting part, the 1/3 and 2/3 positions of the inner arc length of the segment 10 to be detected respectively correspond to the tops of the two supporting columns 110, namely the 1/3 and 2/3 positions of the inner arc length of the segment 10 to be detected abut against the cushion block 120.

(4) The hydraulic loading cup 210 is turned over at the position to be detected of the outer circular arc of the duct piece 10, and the first sealing ring 221 and the second sealing ring 222 are installed. And (3) installing a steel plate 2411 and a square steel 2412 above the bottom of the hydraulic loading cup 210, and applying a pulling force through a bolt and a nut to enable the hydraulic loading cup 210 to be tightly attached to the segment 10.

(5) Grease is injected into the gap of the wire mesh 231 through the sealing grease injection passage 212.

(6) The water pressure loading cup 210 is filled with compressed air through the water inlet 211, and the sealing performance is checked. And (4) the sealing performance is qualified, and the next step is carried out.

(7) And injecting water into the water pressure loading cup 210 through the water injection port 211, gradually increasing the water pressure to a standard to be detected, and determining that the segment 10 to be detected is qualified if no water seeps into the part to be detected, or else, determining that the segment is unqualified.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.

In the description of the embodiments of the present invention, the term "connected" should be interpreted broadly unless otherwise indicated and limited. For example, the two elements may be electrically connected, or may be connected through an intermediate member, directly or indirectly. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.

In the embodiments of the present invention, if the terms "first \ second \ third" are used, they are only used to distinguish similar objects, and do not represent a specific ordering for the objects. It is to be understood that the terms first, second, and third, where permissible, are interchangeable in particular order or sequences.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.