Pipeline repair sealing joint structure

Abstract

According to the pipeline repair sealing joint structure, a sealing washer in a sealing groove in the end of a sealing flange body is provided with a clamping groove clamped with the edge of a lining pipe, the clamping groove wraps the edge of the lining pipe, and therefore the edge of the lining pipe can be reliably sealed in the axial direction and the radial direction; the outer edge of the wrapping part is in smooth transition, turbulent flow can be reduced, through-flow is smooth, the inner wall of the sealing flange body is lined with a PE film, the surface smoothness of the PE film is high, the friction coefficient is small, through-flow is smooth, and therefore the pipeline repairing sealing joint structure can repair a pipeline quickly and effectively, and the service life of the pipeline is prolonged. Meanwhile, water flow is not affected, water flow resistance is reduced, and flow loss caused by diameter shrinkage is reduced.

Description

Technical Field

[0001] This invention relates to the field of pipeline repair technology, and in particular to a pipeline repair sealing joint mechanism. Background Technology

[0002] Currently, Chinese patent CN209977525U discloses a quick-connect pipe fitting, relating to the field of fitting technology. Its key technical features include: a pipe fitting body with an internal through-hole; a sealing device inside the pipe fitting body; the sealing device including a rubber sealing ring and gaskets; the rubber sealing ring comprising a rubber body and at least two sealing pieces evenly distributed along the axial direction of the rubber body; and the gasket comprising an abutment body and an extension piece. The inner annular groove contains only one rubber sealing ring and one gasket, greatly simplifying the composition of the sealing device and making the assembly process of the quick-connect pipe fitting more convenient and faster. The rubber body has at least two sealing pieces, so that when the pipe fitting is inserted into the pipe fitting body, all the sealing pieces can abut against the inner wall of the pipe fitting and seal the gap between the pipe fitting and the pipe fitting body, ensuring that water does not easily flow out from the gap between the pipe fitting and the pipe fitting body during use.

[0003] However, the above scheme does not take into account the sealing stability and water resistance, so the sealing stability and water resistance need to be considered in the structural design. Summary of the Invention

[0004] According to a first aspect of the present invention, a pipe repair sealing joint mechanism is provided, the pipe repair sealing joint mechanism comprising: a sealing joint body, sealant, sealing gaskets, a PE film, and a plurality of fasteners; the sealing joint body is cylindrical; a plurality of fastening holes are provided at both ends of the sealing joint body, each fastening hole matching each of the fasteners, for fixing the sealing joint body to the pipes to be repaired at both ends; grooves are provided at both ends of the sealing joint body, and the sealing gaskets are provided between the grooves at both ends of the sealing joint body and the pipes to be repaired at both ends, for sealing the gap between the sealing joint body and the pipes to be repaired at both ends; the sealant is disposed between the sealing joint body and the pipes to be repaired at both ends for waterproof sealing; the PE film is disposed on the inner diameter surface of the sealing joint body.

[0005] Furthermore, the inner diameter of the sealing joint body is smaller than the inner diameter of the pipe to be repaired.

[0006] Furthermore, the tail ends of both ends of the sealing joint body are arc-shaped.

[0007] Furthermore, the sealant is a waterproof sealant.

[0008] Furthermore, the sealing gasket has an angular cross-section, which is used in conjunction with a labyrinth or wave-shaped sealing structure.

[0009] Furthermore, the sealing gasket has multiple annular sealing rings.

[0010] Furthermore, the sealing portion of the sealing gasket has a taper.

[0011] Furthermore, the surface of the PE film is smooth.

[0012] Furthermore, each of the fasteners is a bolt.

[0013] Furthermore, the method for determining the target sealing stability of the pipeline repair sealing joint mechanism includes the following steps:

[0014] S100, obtain the inner diameter difference ΔD between the inner diameter D1 of the sealing joint body and the inner diameter D2 of the pipe to be repaired, where ΔD = D2 - D1;

[0015] S200, obtain the arc L at the tail of the sealing joint body 1;

[0016] S300, based on radian L and difference △D, determine the target sealing stability F of the pipeline repair sealing joint mechanism.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] This invention provides a pipe repair sealing joint mechanism, comprising: a sealing joint body, sealant, sealing gaskets, a PE film, and several fasteners; the sealing joint body is cylindrical; several fastening holes are provided at both ends of the sealing joint body, each fastening hole matching each fastener for fixing the sealing joint body to the pipes to be repaired at both ends; grooves are present at both ends of the sealing joint body, and the sealing gaskets are placed between the grooves at both ends of the sealing joint body and the pipes to be repaired at both ends for sealing the gap between the sealing joint body and the pipes to be repaired at both ends; the sealant is placed between the sealing joint body and the pipes to be repaired at both ends for waterproof sealing; the PE film is placed on the inner diameter surface of the sealing joint body. Therefore, it can quickly and effectively repair the pipe without affecting the water flow, thereby reducing water flow resistance and minimizing flow loss caused by diameter reduction. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a pipe repair sealing joint structure provided in Embodiment 1 of the present invention; Figure 2 This is a partial structural diagram of a pipe repair sealing joint structure provided in Embodiment 1 of the present invention; Figure 3 This is a partial structural diagram of a sealing gasket for a pipe repair sealing joint structure provided in Embodiment 1 of the present invention; 1-Sealing flange body; 11-Covering part; 2-Sealant; 3-Sealing gasket; 31-Annular sealing ring; 32-Matching groove; 4-PE film; 5-Fasteners; Y1-Flange flange to be repaired; Y2-Inner liner. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1 As shown, this embodiment provides a pipe repair sealing joint mechanism, which includes: a sealing joint body 1, a sealant 2, a sealing gasket 3, a PE film 4, and several fasteners 5;

[0024] The sealing joint body 1 is cylindrical;

[0025] The sealing joint body 1 has several fastening holes at both ends, and each fastening hole matches each fastener 5, which is used to fix the sealing joint body 1 to the pipes to be repaired at both ends.

[0026] The sealing joint body 1 has grooves at both ends, and the sealing gasket 3 is provided between the grooves at both ends of the sealing joint body 1 and the pipes to be repaired at both ends to seal the gap between the sealing joint body 1 and the pipes to be repaired at both ends.

[0027] The sealant 2 is placed between the sealing joint body 1 and the pipes to be repaired at both ends for waterproof sealing;

[0028] The PE membrane 4 is disposed on the inner diameter surface of the sealing joint body 1.

[0029] Specifically, the inner diameter of the sealing joint body 1 is smaller than the inner diameter of the pipe to be repaired.

[0030] Specifically, the tail ends of both ends of the sealing joint body 1 are arc-shaped, which can smoothly transition and reduce turbulence.

[0031] Specifically, the sealant 2 is a waterproof sealant, which can prevent water from contacting the sealing gasket and corroding the sealing ring, causing it to age.

[0032] Specifically, the sealing gasket 3 has an angular cross-section and, in conjunction with a labyrinthine or wave-shaped sealing structure, has multiple annular sealing rings 31, which can achieve multiple seals and improve sealing reliability.

[0033] Furthermore, the sealing part of the sealing gasket 3 has a taper, and the diameter of the inlet end of the sealing gasket 3 is small, which is conducive to insertion into the tube. The compression at the root is greater than the compression at the inlet end, which can make the sealing gasket root more tightly compressed and the sealing performance more reliable.

[0034] Specifically, the surface of the PE membrane 4 is smooth, which can reduce water flow resistance and reduce flow loss caused by diameter reduction.

[0035] Specifically, each of the fasteners 5 is a bolt.

[0036] The aforementioned pipe repair sealing joint mechanism includes: a sealing joint body, sealant, sealing gaskets, a PE film, and several fasteners; the sealing joint body is cylindrical; several fastening holes are provided at both ends of the sealing joint body, each fastening hole matching each fastener for fixing the sealing joint body to the pipes to be repaired at both ends; grooves are present at both ends of the sealing joint body, and the sealing gaskets are placed between the grooves at both ends of the sealing joint body and the pipes to be repaired at both ends for sealing the gap between the sealing joint body and the pipes to be repaired at both ends; the sealant is placed between the sealing joint body and the pipes to be repaired at both ends for waterproof sealing; the PE film is placed on the inner diameter surface of the sealing joint body. Therefore, it can quickly and effectively repair the pipe while not affecting water flow, thus reducing water flow resistance and minimizing flow loss caused by diameter reduction.

[0037] In another embodiment, the method for determining the target sealing stability of the pipeline repair sealing joint mechanism includes the following steps:

[0038] S100, obtain the inner diameter difference ΔD between the inner diameter D1 of the sealing joint body 1 and the inner diameter D2 of the pipe to be repaired, where ΔD = D2 - D1;

[0039] S200, obtain the arc L at the tail of the sealing joint body 1;

[0040] S300, based on radian L and difference △D, determine the target sealing stability F of the pipeline repair sealing joint mechanism.

[0041] Furthermore, step S300 also includes the following steps:

[0042] S301, Obtain sample data A = {A1, ..., A2} of the pipeline repair sealing joint mechanism. i , ..., A m}, A i Let A be the i-th sample data. i =(A i1 A i2 A i3 A i1 A is the difference in the inner diameter of the pipe repair sealing joint mechanism in the i-th sample data. i2 A is the radian of the pipe repair sealing joint mechanism in the i-th sample data. i3 It represents the stability of the pipe repair sealing joint mechanism in the i-th sample data;

[0043] S302, Based on A, train the first sealing stability prediction model, the second sealing stability prediction model and the third sealing stability prediction model;

[0044] S303, input the radian L and the difference △D into the first sealing stability prediction model, the third sealing stability prediction model and the third sealing stability prediction model respectively, to obtain the first key sealing stability F1 of the pipeline repair sealing joint mechanism, the second key sealing stability F2 of the pipeline repair sealing joint mechanism and the third key sealing stability F3 of the pipeline repair sealing joint mechanism.

[0045] S304, when △F≥△F 0 At that time, the target sealing stability F is obtained from F1, F2, and F3; where ΔF is the degree of deviation of the sealing stability prediction model. 0 This is the preset deviation threshold of the sealing stability prediction model; those skilled in the art can set the deviation threshold according to actual needs, which will not be elaborated here.

[0046] S305, when △F < △F 0 When F is obtained, F satisfies the following conditions:

[0047] F = (F1 + F2 + F3) / 3.

[0048] Furthermore, △F satisfies the following conditions:

[0049]

[0050] Wherein, the difference F between F1 and F2 is F 12 F 12 Meets the following conditions:

[0051] F 12 =|F1-F2|;

[0052] Among them, the difference F between F1 and F3 is F 13 F 13 Meets the following conditions:

[0053] F 13 =|F1-F3|;

[0054] Among them, the difference F between F2 and F3 is F 23 F 23 Meets the following conditions:

[0055] F 23 =|F2-F3|;

[0056] Among them, the mean difference F 0 Meets the following conditions:

[0057] F 0 =(F 12 +F 13 +F 23 ) / 3.

[0058] Furthermore, step S302 also includes the following steps:

[0059] S3021, each A i1 A i2 and A i3 The input is fed into the preset first prediction model to obtain each A. i The corresponding sealing stability K of each first sample 1 i To further understand this: First, based on K 1 i =a 11 ×A i1 +a 12 ×A i2 +b1, a 11 It is the initial weight of the first inner diameter difference, a 12b1 is the initial radian weight, and b1 is the initial sealing stability compensation coefficient; then, based on all A i3 With K 1 i The difference between them, optimize a 11 a 12 and b1, that is, through all A i3 With K 1 i The difference between them is optimized using an optimization method for a. 11 a 12 and b 11 Those skilled in the art are familiar with existing optimization methods, which will not be elaborated here, such as genetic optimization methods.

[0060] S3022, each A i1 A i2 and A i3 The input is fed into a pre-defined second prediction model to obtain each A. i The corresponding sealing stability K of each second sample 2 i To further understand this: First, based on K 2 i =a 21 ×e Ai1 +a 22 ×e Ai2 +b2, a 21 It is the initial weight of the second inner diameter difference, a 22 b1 is the initial second radian weight, and b2 is the initial second sealing stability compensation coefficient; then, based on all A... i3 With K 2 i The difference between them, optimize a 21 a 22 and b2, that is, through all A i3 With K i The difference between them is optimized using an optimization method for a. 21 a 22 Regarding b2, those skilled in the art are familiar with existing optimization methods, which will not be elaborated here, such as genetic optimization methods.

[0061] S3023, each A i1 A i2 and A i3 The input is fed into a pre-defined third prediction model to obtain each A. i The corresponding sealing stability K of each third sample 3 i To further understand this: First, based on K 3 i =a31 ×lnA i1 +a 32 ×lnA i2 +b3, a 31 It is the initial weight of the third inner diameter difference, a 32 b3 is the initialized third radian weight, and b3 is the initialized third sealing stability compensation coefficient; then, based on all A... i3 With K 3 i The difference between them, optimize a 31 a 32 and b3, that is, through all A i3 With K i The difference between them is optimized using an optimization method for a. 31 a 32 Regarding b3, those skilled in the art are familiar with existing optimization methods, which will not be elaborated here, such as genetic optimization methods.

[0062] S3024, the optimized a 11 a 12 a 21 a 22 a 31 a 32 b1, b2, and b3 respectively adjust the parameters of the preset first prediction model, the preset second prediction model, and the preset third prediction model to generate the first sealing stability prediction model, the second sealing stability prediction model, and the third sealing stability prediction model.

[0063] Furthermore, step S304 also includes the following steps:

[0064] S1, obtain K 1 The degree of variation U between all first sample sealing stability between 1 and F1 1 Among them, the degree of variation in the sealing stability of all first samples refers to K. 1 The variance between the first sample seal stability and the corresponding true seal stability between 1 and F1;

[0065] S2, obtain K 2 The degree of variation U between the sealing stability of all second samples between 1 and F2 2 Among them, the degree of variation in the sealing stability of all second samples refers to K. 2 The variance between the sealing stability of each second sample and the corresponding true sealing stability between F1 and F2;

[0066] S3, obtain K 3 The degree of variation U between the sealing stability of all third samples between 1 and F33 In this context, the degree of variation in the sealing stability of all third samples refers to K. 3 The variance of the sealing stability of each third sample between F1 and F3 and the corresponding true sealing stability.

[0067] S4, from U 1 U 2 and U 3 The minimum value corresponds to the critical seal stability as F.

[0068] The above-mentioned method predicts the difference between the arc and the inner diameter using different sealing stability prediction models, resulting in different prediction results. Then, based on the relationship between the different prediction results and their own degree of change, the target sealing stability is determined. This avoids inaccurate sealing stability predictions that could lead to deviations in the prediction of the pipeline repair sealing joint mechanism, thus affecting the timing of the pipeline repair sealing joint mechanism's inspection.

[0069] While specific embodiments of the invention have been described in detail by way of example, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. It should also be understood that various modifications can be made to the embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A pipe repair sealing joint structure, comprising: The sealing flange body (1), the pipe flange to be repaired (Y1), and the inner liner (Y2) are provided. The inner liner is lined on the inner wall of the pipe flange to be repaired. The sealing flange body (1) and the pipe flange to be repaired are fastened by fasteners (5). The inner liner protrudes beyond the end face of the pipe flange to be repaired. The sealing flange body (1) has a sealing groove at its end, and a sealing gasket (3) is provided in the sealing groove. The sealing gasket has a locking groove (32) that engages with the edge of the inner liner. The locking groove covers the edge of the inner liner, and the outer edge of the covered part is smoothly transitioned. The inner wall of the sealing flange body (1) is lined with a PE film (4).

2. The pipe repair sealing joint structure according to claim 1, characterized in that, The sealing flange body (1) has a covering portion for protecting the sealing gasket, and the gap between the covering portion and the inner liner tube is filled with sealant.

3. The pipe repair sealing joint structure according to claim 1, characterized in that, The cross-section of the sealing gasket (3) is angular. The side of the sealing gasket (3) that is in contact with the inner wall of the inner liner tube is provided with a labyrinth-type or wave-type sealing structure. The groove of the labyrinth-type or wave-type sealing structure is filled with sealant.

4. The pipe repair sealing joint structure according to claim 1, characterized in that, The sealing gasket (3) has multiple annular sealing rings (31) filled with sealant.

5. The pipe repair sealing joint structure according to claim 3 or 4, characterized in that, The sealant (2) is a waterproof sealant.

6. The pipe repair sealing joint structure according to claim 1, characterized in that, The sealing gasket (3) has a tapered shape when it is in contact with the inner wall of the inner liner.

7. The pipe repair sealing joint structure according to claim 1, characterized in that, Each of the fasteners (5) is a bolt.

8. The pipe repair sealing joint structure according to any one of claims 1-7, characterized in that, The method for determining the target sealing stability of the pipeline repair sealing joint structure includes the following steps: S100, obtain the inner diameter difference ΔD between the inner diameter D1 of the sealing flange body (1) and the inner diameter D2 of the flange of the pipe to be repaired, where ΔD = D2 - D1; S200, obtain the arc L of the tail of the sealing flange body 1; S300, based on radian L and difference △D, determine the target sealing stability F of the pipeline repair sealing joint structure.

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