Sleeve assembly for flexible cut-off device, flexible cut-off device and diversion well

Abstract

The present invention discloses a sleeve assembly for a flexible shut-off device, a flexible shut-off device and a diversion well. The sleeve assembly for the flexible shut-off device includes a cylinder body and a cylinder cover, wherein the cylinder body includes a first bending portion located at the end of the cylinder body, and the cylinder cover includes a second bending portion and a third bending portion located at the edge of the cylinder cover, wherein the inner width formed by the second bending portion and the third bending portion of the cylinder cover can accommodate the thickness of the capsule to be fixed and the first bending portion of the cylinder body. The first bending portion and the third bending portion are respectively provided with meshable teeth. When the cylinder cover is meshed with the cylinder body, the cylinder cover is pushed to displace the third bending portion from the first bending portion, and then the cylinder cover is rotated, so that the capsule can be clamped. The structural coordination of the sleeve assembly in this scheme can be used to fix the capsule in the flexible shut-off device without destroying the woven structure of the capsule, realizing drilling-free installation, and improving the service life of the capsule.

Description

Technical Field

[0001] The invention belongs to the technical field of drainage, and in particular relates to a sleeve assembly for a flexible intercepting device, a flexible intercepting device and a diversion well. Background Art

[0002] The existing flexible intercepting device includes a sleeve assembly and a bladder. The sleeve assembly includes a cylinder and a cylinder cover for fixing the bladder. There is an inflatable cavity between the cylinder and the bladder. When the cavity is inflated, the bladder can be deformed and fit to close the channel. When the bladder is deflated, its shape is restored to open the channel.

[0003] In the prior art, the sleeve assembly and the bladder are fixed with bolts, and holes need to be drilled in the cylinder assembly and the bladder. The bladder is generally made of vulcanized braided fabric and has a braided structure. Drilling will destroy its braided structure. Especially during the inflation process of the flexible shut-off device, the bladder is deformed, and the part at the bolt connection is subjected to a large pulling force. The structural strength of this part is weak and it is easy to break, which affects the service life of the bladder. In addition, drilling and bolt assembly consumes more working hours, especially the larger the size of the flexible shut-off device, the more fixing points there are, and the longer the drilling and bolt assembly time. Moreover, the larger the size of the flexible shut-off device, the larger the bolt size selection, the larger the cross-section used for fixing, and the larger the floor space in the actual application environment. Summary of the invention

[0004] In order to solve the above problems, in the first aspect, the present invention provides a sleeve assembly for a flexible shutoff device. The sleeve assembly includes a cylinder and a cylinder cover, and the cooperation between the cylinder and the cylinder cover is used to fix the capsule in the flexible shutoff device; the cylinder includes a first bending portion located at the end of the cylinder, and the first bending portion is provided with a first tooth and a first tooth groove; the cylinder cover includes a second bending portion and a third bending portion located at the edge of the cylinder cover, and the third bending portion is provided with a third tooth and a third tooth groove; wherein the inner width formed by the second bending portion and the third bending portion of the cylinder cover can simultaneously accommodate the thickness of the capsule to be fixed and the first bending portion of the cylinder, and the third tooth of the cylinder cover can mesh with the first tooth groove of the cylinder, and the third tooth groove of the cylinder cover can mesh with the first tooth of the cylinder.

[0005] In the scheme of the first aspect, when the cylinder cover is engaged with the cylinder body, the third teeth and third tooth grooves of the cylinder cover are in the same vertical section as the first teeth and first tooth grooves of the cylinder body; the cylinder cover is pushed so that the third teeth and third tooth grooves of the cylinder cover are misaligned with the first teeth and first tooth grooves of the cylinder body and are in different vertical sections, and then the cylinder cover is rotated so that the third teeth of the cylinder cover overlap with the first teeth of the cylinder body in the transverse section, and the third tooth grooves of the cylinder cover overlap with the first tooth grooves of the cylinder body in the transverse section. In this scheme, the inner width formed by the second bending part and the third bending part of the cylinder cover can simultaneously accommodate the thickness of the first bending part of the sac to be fixed and the sac to be fixed. When the cylinder cover is engaged with the cylinder body, the cylinder cover is pushed so that the third bending part is misaligned with the first bending part, and then the cylinder cover is rotated, so that the sac can be clamped. The structural coordination of the sleeve assembly in this scheme can be used to fix the sac in the flexible intercepting device without destroying the woven structure of the sac, realizing drilling-free installation, and improving the service life of the sac.

[0006] In the first aspect, optionally, the sleeve assembly for the flexible intercepting device further includes: a gasket, which is built into the cylinder cover. The gasket can apply pre-pressure to the capsule. In addition, the sleeve assembly is generally made of metal material to ensure strength, and the capsule is generally made of rubber to ensure deformation. During the rotation of the cylinder cover, due to the different materials, the friction between the contact surface of the cylinder cover and the capsule is relatively large. Adding a gasket can reduce the friction and also reduce the wear of the contact surface of the capsule.

[0007] In the first aspect, optionally, the gasket is divided into at least two lobes. Because the barrel cover has a second bending portion and a third bending portion, the third bending portion will hinder the gasket from fitting with the barrel cover, so the gasket is divided into at least two lobes, and when built into the barrel cover, the gasket can fit the barrel cover at an inclined angle respectively, thereby avoiding the obstruction of the third bending portion.

[0008] In the first aspect, optionally, a rotating handle is provided on the cylinder cover. For a larger sleeve assembly, a larger rotation force is required, and tooling may be required to complete the assembly. However, for a smaller sleeve assembly, the assembly may be completed manually, so the rotating handle is provided on the cylinder cover to facilitate the application of force.

[0009] In a second aspect, the present invention provides a flexible intercepting device. The flexible intercepting device comprises a sleeve assembly and a capsule, wherein the sleeve assembly is as described in the first aspect. The cylinder in the sleeve assembly surrounds the capsule, and the end of the capsule comprises a flange, and the flange is parallel to the first bending portion of the cylinder; when the third tooth of the cylinder cover overlaps with the first tooth of the cylinder, and the third tooth groove of the cylinder cover overlaps with a tooth groove of the cylinder, the flange of the capsule is clamped by the cylinder and the cylinder cover.

[0010] In the solution of the second aspect, the flange of the capsule is in contact with the first bent portion of the cylinder. When in contact, the edge of the flange should be flush with the edge of the first bent portion, or the edge of the flange should not protrude beyond the edge of the first bent portion.

[0011] In the second aspect, optionally, a groove is provided on the flanged surface of the capsule, and a convex bulge is provided on the first bent portion of the cylinder; or a convex bulge is provided on the flanged surface of the capsule, and a groove is provided on the first bent portion of the cylinder. The cooperation between the convex bulge and the groove plays a positioning role for the capsule, preventing the capsule from deflecting or falling off during the assembly force application process, thereby affecting the fixing effect.

[0012] In the second aspect, optionally, a gasket is provided in the cylinder cover, the gasket is provided with a convex bulge, and the flange surface of the capsule is provided with a groove correspondingly; or, the gasket is provided with a groove, and the flange surface of the capsule is provided with a convex bulge correspondingly. This also plays a role in positioning the capsule.

[0013] In the second aspect, optionally, the capsule is cylindrical, a circle of protrusions is radially arranged in the middle of the capsule, the protrusions are made of rubber material, and the hardness of the protrusions is lower than the hardness of the capsule. After the flexible intercepting device is inflated, there may be fine cracks in the process of deformation and fitting of the capsule, and the protrusions have low hardness and are more easily deformed. The extrusion deformation can fill the fine cracks to provide a sealing effect when the flexible intercepting device closes the channel.

[0014] In the second aspect, optionally, a sealing ring is provided at the connection between the flexible intercepting device and the downstream pipeline. When the flexible intercepting device is used in the field of drainage, it needs to be connected to the downstream pipeline, and a sealing ring is provided at the connection to prevent water leakage.

[0015] In a third aspect, the present invention provides a diversion well, which comprises a first water inlet, a first water outlet and a second water outlet, wherein the first water outlet and / or the second water outlet is provided with a flexible intercepting device, wherein the flexible intercepting device is as described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the fixing method of the flexible intercepting device in the prior art;

[0018] Figure 2 for Figure 1 A magnified view of the part A in the middle;

[0019] Figure 3 A schematic diagram of the assembly process of the first embodiment of the flexible shut-off device provided by the present invention;

[0020] Figure 4 A schematic diagram of the assembly effect of the first embodiment of the flexible intercepting device provided by the present invention;

[0021] Figure 5 A schematic diagram of the engagement state of the sleeve assembly provided by the present invention;

[0022] Figure 6 A schematic diagram of the rotation state of the sleeve assembly provided by the present invention;

[0023] Figure 7 A schematic diagram of the overlapping state of the sleeve assembly provided by the present invention;

[0024] Figure 8 A schematic diagram of the assembly effect of the second embodiment of the flexible intercepting device provided by the present invention;

[0025] Fig. 9 This is a schematic diagram of Example 3 of the flexible intercepting device provided by the present invention.

[0026] Reference numerals:

[0027] 10-cylinder, 11-first bending portion, 111-first tooth, 112-first tooth groove;

[0028] 20-cylinder cover, 21-second bending portion, 22-third bending portion, 221-third tooth, 222-third tooth groove;

[0029] 30-capsule, 31-flange, 32-protrusion;

[0030] 41-bolt, 42-nut;

[0031] 50-shim, 51-convex hull;

[0032] 60-Seal ring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0034] At the same time, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "disposed on" another component, it may be directly disposed on the other component or there may be a centered component at the same time. The terms "vertical", "lateral", "inside", "outside", "left", "right" and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the present invention.

[0035] like Figure 1 As shown, the existing flexible intercepting device includes a sleeve assembly 10, 20 and a bladder 30. The sleeve assembly includes a cylinder 10 and a cylinder cover 20 for fixing the bladder. There is an inflatable cavity between the cylinder 10 and the bladder 30. After the cavity is inflated, the bladder 30 can be deformed and fit to close the channel. After being deflated, the bladder 30 restores its shape to open the channel.

[0036] like Figure 2 As shown, in the prior art, the cylinder 10 is provided with a bending portion 11, and the bending portion 11 can be a welded part or can be processed by a bending process. The capsule 30 is provided with a corresponding flange 31, and the bending portion 11 of the cylinder 10 and the cylinder cover 20 sandwich the flange 31 of the capsule 30 in the middle. The bending portion 11, the capsule 30, and the cylinder cover 20 are coaxially provided with screw holes, and the bolts 41 pass through the screw holes and are then fixed by nuts 42. The capsule is generally made of braided vulcanization (the vulcanization process is not a necessary process) and has a braided structure. The drilling will destroy its braided structure. Especially during the inflation process of the flexible intercepting device, the capsule is deformed, and the part at the bolt connection is subjected to a large pulling force, and the structural strength of this part is weak, so it is easy to be damaged, which affects the service life of the capsule. In addition, drilling and bolt assembly consumes more working hours, especially the larger the size of the flexible intercepting device, the more fixing points there are, and the longer the drilling and bolt assembly time. Moreover, the larger the flexible shut-off device is, the larger the bolt size will be, the larger the cross-section used for fixing will be, and the space occupied in the actual application environment will also be increased.

[0037] In order to solve the above problems, the present invention improves the prior art.

[0038] Embodiment 1

[0039] Combination Figure 3 to Figure 4As shown, the flexible intercepting device includes a sleeve assembly and a capsule, the sleeve assembly includes a cylinder 10 and a cylinder cover 20, the cylinder 10 in the sleeve assembly surrounds the capsule 30, and the cooperation between the cylinder 10 and the cylinder cover 20 is used to fix the capsule 30 in the flexible intercepting device. The cylinder 10 includes a first bending portion 11 located at the end of the cylinder. The end of the capsule 30 includes a flange 31, and the flange 31 is parallel to the first bending portion 11 of the cylinder. In practical applications, when the flange 31 and the first bending portion 11 are close to each other, the flange 31 can be flush with the end of the first bending portion 11, but the flange should not protrude from the end of the bending portion. The cylinder cover 20 includes a second bending portion 21 and a third bending portion 22 located at the edge of the cylinder cover. The second bending portion 21 and the third bending portion 22 of the cylinder cover form an inner space, and its inner width can simultaneously accommodate the thickness of the capsule 30 to be fixed and the first bending portion 11 of the cylinder. In actual application, the bladder has a certain elasticity, and its thickness changes when a certain pressure is applied to it. The thickness of the present invention does not refer to the absolute thickness, but a corresponding thickness according to the elasticity of the bladder. Teeth that can mesh with each other are set on the first bending portion 11 of the cylinder 10 and the third bending portion 22 of the cylinder cover 20. In actual application, the first bending portion 11 of the cylinder can be bent toward the inside of the cylinder or toward the outside of the cylinder; the second bending portion and the third bending portion of the cylinder cover can correspond thereto. When the cylinder cover is meshed with the cylinder through the teeth, the teeth of the cylinder cover and the cylinder are on the same vertical plane; after pushing the cylinder cover, as shown in FIG. Figure 3 From the perspective shown in , after the cylinder cover moves to the left, the teeth of the cylinder cover and the teeth of the cylinder body are in different vertical planes, the teeth of the cylinder cover are on the left, and the teeth of the cylinder body are on the right. Then the cylinder cover is rotated so that the teeth of the cylinder cover and the teeth of the cylinder body overlap in the horizontal plane, thereby fixing the capsule between the cylinder cover and the cylinder body.

[0040] In the above embodiment, the working principle of the cylinder body and cylinder cover constituting the sleeve assembly is as follows: Figures 5 to 7As shown. The first bending portion 11 of the barrel 10 is provided with a first tooth 111 and a first tooth groove 112. The third bending portion 22 of the barrel cover 20 is provided with a third tooth 221 and a third tooth groove 222. The third tooth 221 of the barrel cover can mesh with the first tooth groove 112 of the barrel, and the third tooth groove 222 of the barrel cover can mesh with the first tooth 111 of the barrel. In the process of fixing the capsule body by the barrel assembly, the third tooth 221 of the barrel cover is first meshed with the first tooth groove 112 of the barrel, and the third tooth groove 222 of the barrel cover is meshed with the first tooth 111 of the barrel. When the barrel cover is pushed, the barrel and the barrel cover are disengaged from the meshing state and are in a dislocated state. At this time, the first bending portion 11 of the barrel and the third bending portion 22 of the barrel cover are in two different vertical spaces, and will not interfere with each other when the barrel cover is rotated again. When the third tooth of the cylinder overlaps with the first tooth of the cylinder, and the third tooth groove of the cylinder cover overlaps with a tooth groove of the cylinder, the flange of the capsule is clamped between the first bending part of the cylinder and the third bending part of the cylinder cover. In actual application, the best state is that the first tooth of the cylinder completely overlaps with the three teeth of the cylinder cover in the horizontal direction.

[0041] In the above embodiment, it is not necessary to drill holes in the capsule, and the capsule is clamped by the first bending part of the cylinder and the third bending part of the cylinder cover, without destroying the local structure of the capsule. Even during the inflation process of the flexible intercepting device, the edge of the capsule is subjected to a large pulling force due to the expansion and deformation of the capsule, but because the overall woven structure of the capsule is not destroyed and the force is evenly applied, it is not easy to be damaged, thereby improving the service life of the capsule. Moreover, in the bolt fixing method used in the prior art, when the diameter of the capsule is larger, the size of the cylinder is larger, the number of holes drilled is more, the specifications of the selected bolts are larger and the number is more, the labor hours consumed during assembly are longer, and the production cost is higher. The solution of the present invention does not require drilling holes or installing bolts. It only requires the cylinder cover to engage with the toothed mouth of the cylinder, and then push and rotate. The fast installation method can greatly save labor hours. In addition, in the bolt fixing method used in the prior art, the larger the diameter of the capsule, the larger the specifications of the bolts, the larger the drilling section of the first bending part, and the larger the overall size of the flexible intercepting device. In this embodiment, the edge of the capsule body can also be configured as a toothed opening that matches the tube cover to increase the clamping surface of the capsule body.

[0042] In the first embodiment, a gasket 50 is also provided in the sleeve assembly. The gasket 50 is built into the cylinder cover, and a pre-pressure can be applied to the capsule to reduce friction. On the one hand, the gasket reduces the resistance when the cylinder cover rotates, and on the other hand, it can also reduce the wear on the surface of the capsule. In addition, the cylinder and the cylinder cover clamp the capsule, and there are tolerance requirements for the first bending portion of the cylinder, the second bending portion of the cylinder cover, and the third bending portion of the cylinder cover. The better the tolerance control, the easier the assembly process, and the better the effect of the capsule being clamped. However, it is limited by the process conditions, such as the welding process is adopted for these bending portions of the cylinder and the cylinder cover, and the processing accuracy may not fully meet the requirements, which affects the assembly. Compared with these bending portions, the process of the gasket is much easier to control, so the problem of insufficient precision control of these bending portions can be adjusted or compensated by controlling the tolerance of the gasket.

[0043] Embodiment 2

[0044] like Figure 8 As shown, on the basis of the first embodiment, a groove is provided on the surface of the flange 31 of the capsule, and a convex bulge is provided on the first bending portion 11 of the cylinder; or, alternatively, a convex bulge is provided on the surface of the flange of the capsule, and a groove is provided on the first bending portion of the cylinder. The cooperation between the convex bulge and the groove plays a role in positioning the capsule, preventing the capsule from being deflected during the assembly force application process, thereby affecting the fixing effect. More preferably, the gasket 50 is also provided with a convex bulge 51, and a groove is provided on the surface of the flange of the capsule; or, the gasket is provided with a groove, and a convex bulge is provided on the surface of the flange of the capsule, which plays a role in positioning the capsule.

[0045] Embodiment 3

[0046] like Fig. 9 As shown, the capsule in the flexible intercepting device is cylindrical, and a circle of protrusions 32 are radially arranged in the middle of the capsule. The protrusions are made of rubber material, and the hardness of the protrusions is less than the hardness of the capsule. Common flexible intercepting devices have two-point deformation, three-point deformation or four-point deformation. The two-point deformation is gradually eliminated because the cross-sectional size of the capsule fitting surface after deformation is larger than the diameter of the capsule before deformation, and the diameter of the cylinder in the sleeve assembly needs to be larger than the diameter of the capsule. Therefore, the overall size of the device is too large and is gradually eliminated. The current mainstream technology is to make the capsule produce three-point deformation, but when the capsule is deformed and fitted to close the channel, the deformation node, that is, the arc-shaped bend, cannot be completely fitted, and there must be gaps and the sealing is not good enough. In this embodiment, a protrusion is radially arranged in the middle of the capsule, and the hardness of the protrusion is lower than the hardness of the capsule. The protrusion is easier to deform than the capsule. Therefore, during the deformation and fitting process of the capsule of the flexible intercepting device, the protrusion is more deformed when it is squeezed, so that the fine gap can be filled to provide a sealing effect when the flexible intercepting device closes the channel. In addition, the flexible intercepting device is used in the drainage system, and a sealing ring 60 is provided at the connection with the downstream pipeline to prevent water leakage at the connection.

[0047] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present invention can be modified, recombined or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sleeve assembly for a flexible intercepting device, the sleeve assembly being used to fix a capsule in the flexible intercepting device, characterized in that: The sleeve assembly comprises a cylinder body and a cylinder cover; The cylinder comprises a first bending portion located at the end of the cylinder, and the first bending portion is provided with a first tooth and a first tooth groove; The cylinder cover comprises a second bending portion and a third bending portion located at the edge of the cylinder cover, and the third bending portion is provided with a third tooth and a third tooth groove; The inner width formed by the second bending portion and the third bending portion of the tube cover can accommodate the thickness of the capsule to be fixed and the first bending portion of the tube body, the third tooth of the tube cover can mesh with the first tooth groove of the tube body, and the third tooth groove of the tube cover can mesh with the first tooth of the tube body; Also includes: A gasket, the gasket is built into the cylinder cover, and the gasket is divided into at least two parts; A rotating handle is arranged on the cylinder cover.

2. A flexible intercepting device, comprising a sleeve assembly and a capsule, characterized in that: The sleeve assembly is a sleeve assembly as described in claim 1, wherein the cylinder in the sleeve assembly surrounds the sac, and the end of the sac includes a flange, which is parallel to the first bending portion of the cylinder; when the third tooth of the cylinder cover overlaps with the first tooth of the cylinder, and the third tooth groove of the cylinder cover overlaps with a tooth groove of the cylinder, the flange of the sac is clamped by the cylinder and the cylinder cover.

3. The flexible intercepting device according to claim 2, characterized in that: The flange surface of the capsule is provided with a groove, and the first bending portion of the cylinder is correspondingly provided with a convex hump; or, A convex bump is arranged on the flange surface of the capsule, and a groove is correspondingly arranged on the first bending portion of the cylinder.

4. The flexible intercepting device according to claim 2, characterized in that: A gasket is arranged in the cylinder cover; Wherein, the gasket is provided with a convex bump, and the flange surface of the capsule is correspondingly provided with a groove; or, The gasket is provided with a groove, and the flange surface of the capsule is correspondingly provided with a convex bump.

5. The flexible shut-off device according to claim 2, characterized in that: The capsule is cylindrical, and a circle of protrusions is radially arranged in the middle of the capsule. The protrusions are made of rubber material, and the hardness of the protrusions is lower than the hardness of the capsule.

6. The flexible intercepting device according to claim 2, characterized in that: A sealing ring is provided at the connection between the flexible intercepting device and the downstream pipeline.

7. Diversion well, characterized by: The diversion well comprises a first water inlet, a first water outlet and a second water outlet, and a flexible intercepting device is arranged at the first water outlet and / or the second water outlet, wherein the flexible intercepting device is the flexible intercepting device as described in any one of claims 2-6.

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