Connecting and sealing device for pipeline and inspection well

Abstract

The utility model discloses a connecting and sealing device for a pipeline and an inspection well, which relates to the technical field of pipeline sealing and comprises a connecting pipe, a pipeline sealing unit and a vertical well waterproof unit. A plurality of sealing measures are taken, and the sealing component can be compressed and deformed under the action of external force, so that the sealing component is more tightly attached to the end face of the component, and the sealing effect can be effectively achieved; after the inner rubber ring is extruded by the flange, the protruding part of the inner rubber ring can be tightly attached to the joint of the connecting flange and the connecting pipe, so that the sealing effect between the flange plates is achieved, and meanwhile the sealing performance between the connecting flange and the connecting pipe is improved. A reliable vertical shaft waterproof unit is further arranged, water permeating into the vertical shaft from a wellhead can flow into a groove between the pipeline and the inner barrel, and the situation that the permeating water flows into the pipeline along an access hole of the inner barrel is effectively avoided; and the water in the groove is discharged outwards through the drainage channel, so that the water in the annular groove is prevented from being accumulated.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline sealing technical field, concretely is a pipeline and inspection well connecting sealing device. BACKGROUND

[0002] The inspection well is set for the installation and maintenance of the underground infrastructure such as city power supply, water supply, drainage, sewage, communication, cable television, gas pipe, street lamp line, etc., is generally set at the pipeline intersection, turning, pipe diameter or slope change, and every certain distance on the straight pipe section, between the pipeline and the inspection well, the connecting device is usually used to realize the connection between the pavement pipeline and the inspection well, in order to ensure that the pipeline is unobstructed and the long-term stability of the internal line and other facilities, the sealing property of the connecting device needs to be improved.

[0003] The connecting device for the pipeline and the inspection well in the prior art, the contact between the sealing element and the workpiece is not close enough, and the sealing structure is not comprehensive enough in the acting position, which cannot guarantee good sealing effect; in addition, the existing device lacks a drainage structure at the connecting part with the inspection well, when the ground rainwater enters the vertical shaft through the joint gap of the well lid, the well lid of the inspection well cannot be normally opened, and even the line inside the well body can be damaged, therefore, we provide a pipeline and inspection well connecting sealing device. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of overcoming the defects of the prior art, provides a pipeline and inspection well connecting sealing device, has multiple sealing measures, the sealing parts are arranged in the device and the connecting part with the external pipeline, which greatly improves the sealing property of the device, the sealing parts can be compressed and deformed under the action of external force, thereby being more closely attached to the end face of the part, which can effectively play a sealing effect, after being extruded by the flange, the protruding part of the inner rubber ring is attached to the joint between the connecting flange and the connecting pipe, thereby improving the sealing property between the connecting flange and the connecting pipe while realizing the sealing effect between the flanges, and the reliable vertical shaft waterproof unit is also provided, the water seeping into the vertical shaft from the well mouth can flow into the groove between the pipeline and the inner cylinder, effectively avoiding the seepage water flowing into the pipeline through the maintenance opening of the inner cylinder, the water in the annular groove is discharged outward through the drainage channel, thereby preventing the water accumulation in the annular groove, which can effectively solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a pipeline and inspection well connecting sealing device, which comprises a connecting pipe, a pipeline sealing unit and a vertical shaft waterproof unit.

[0006] The connecting pipe has two pipe bodies fixedly connected horizontally and vertically, the two ends of the horizontal section of the connecting pipe are connected with the pavement pipeline, and the upper end of the connecting pipe is inserted into the inside of the inspection well poured with cement;

[0007] The pipeline sealing unit comprises a connecting flange, an annular groove, a clamping block and a sealing gasket. The connecting flange is fixedly connected to the two ends of the horizontal section of the connecting pipe. A circle of flange holes are arranged in the circumferential direction on the annular surface of the connecting flange. The outer port of the connecting flange is beyond the outer port of the connecting pipe. An annular groove is arranged on the inner ring side of the port of the connecting flange. A circle of clamping blocks are fixedly connected to the inner side of the annular groove in the circumferential direction. The clamping blocks are micro-curved structures. A gap is left between two adjacent clamping blocks. The sealing gasket is clamped in the inner part of the annular groove, and the outer end thereof protrudes outward.

[0008] The vertical shaft waterproof unit is installed in the vertical section of the connecting pipe.

[0009] The connecting flange is used to connect the horizontal end of the connecting pipe with the pipelines laid on both sides. The outer end of the sealing gasket protrudes outward and can be compressed when the two flanges are fastened, so that the gasket is more tightly attached to the flange, thereby improving the sealing performance of the pipeline connection. The annular groove is used for the installation of the sealing gasket. The clamping blocks on the inner side can prevent the gasket from falling off during installation.

[0010] Further, the pipeline sealing unit further comprises a clamping hole and an inner rubber ring. The inner ring side of the sealing gasket is fixedly connected with an inner rubber ring. The outer end of the inner rubber ring is flush with the outer end surface of the sealing gasket. The inner end of the inner rubber ring protrudes outward. A circle of clamping holes are arranged in the circumferential direction on the inner ring side of the sealing gasket. The number and shape and size of the clamping holes are the same as those of the clamping blocks. The clamping holes are used for the installation and clamping of the sealing gasket. When the sealing gasket is installed, the clamping holes are aligned with the clamping blocks and clamped in, so that the sealing gasket can be conveniently installed and clamped tightly to prevent falling off. After being compressed by the flanges, the protruding part of the inner rubber ring is tightly attached to the joint between the connecting flange and the connecting pipe, thereby achieving the sealing effect between the flanges and improving the sealing performance between the connecting flange and the connecting pipe.

[0011] Further, the pipeline sealing unit further comprises a metal ring belt, a fastening block and a sealing ring. The inner end of the connecting flange is fixedly connected with four metal ring belts in the circumferential direction. The four metal ring belts form a circular ring structure. The end portions of two adjacent metal ring belts do not connect with each other. A fastening block is fixedly connected to the end portion of each metal ring belt. Two adjacent fastening blocks are fastened by bolts. The connecting pipe is sleeved with a sealing ring on the outer side in the circumferential direction. The sealing ring is clamped between the outer wall of the connecting pipe and the inner ring side of the metal ring belt. The metal ring belts are fastened by bolts, which can improve the fastening performance between the connecting flange and the connecting pipe on the basis of welding. When the metal ring belt is tightened, the inner sealing ring can be tightened, thereby further improving the sealing performance between the connecting flange and the connecting pipe.

[0012] Further, the shaft waterproof unit comprises an inspection cover and an inner cylinder, an annular groove is formed in the inner side of the upper end of the vertical section of the connecting pipe, thereby forming the inner cylinder which is spaced apart from the inner wall of the vertical section of the connecting pipe, the height of the upper port of the inner cylinder is between the upper port of the connecting pipe and the bottom of the groove, and a circular inspection cover is screwed into the port of the inner cylinder. By forming the annular groove in the inner side of the upper end of the vertical section of the connecting pipe, the upper port of the inner cylinder is higher than the groove, so that the water seeping into the shaft from the wellhead can flow into the groove between the pipe and the inner cylinder, effectively preventing the seeping water from flowing into the pipe through the inspection port of the inner cylinder, and the inspection cover is used for closing the inspection port.

[0013] Further, the shaft waterproof unit further comprises a drainage channel and a drainage port, a plurality of drainage channels are formed in the inner side of the vertical section of the connecting pipe in a circular array, the vertical section of the drainage channel is connected to the annular groove in the inner side of the connecting pipe, and the lower section of the drainage channel is obliquely formed outward and connected to the drainage port formed in the outer side of the vertical section of the connecting pipe. The water flowing into the groove between the pipe and the inner cylinder can be guided downward along the vertical drainage channel and discharged outward from the drainage port, thereby preventing the water in the annular groove from accumulating.

[0014] Further, the shaft waterproof unit further comprises a rotating rod, the upper end of the inspection cover is fixedly connected to a section of the rotating rod, and the center position of the rotating rod coincides with the center position of the inspection cover. By rotating the rotating rod, the rotating rod can be opened, so that workers can dredge the pipe or inspect the internal circuit.

[0015] Compared with the prior art, the pipeline and inspection well connecting and sealing device has the following advantages:

[0016] 1. Multiple sealing measures are arranged in the device and at the connection between the device and the external pipeline, so that the sealing performance of the device is greatly improved; the sealing components can be compressed and deformed under the action of external force, so that the sealing components are more closely attached to the end surfaces of the components, and the sealing effect is effectively achieved; after being pressed by the flanges, the protruding part of the inner rubber ring is attached to the joint between the connecting flange and the connecting pipe, so that the sealing effect between the flanges is achieved, and the sealing performance between the connecting flange and the connecting pipe is improved.

[0017] 2. A reliable shaft waterproof unit is arranged, the inspection cover is used for closing the inspection port, the annular groove is formed in the inner side of the upper end of the vertical section of the connecting pipe, so that the upper port of the inner cylinder is higher than the groove, so that the water seeping into the shaft from the wellhead can flow into the groove between the pipe and the inner cylinder, effectively preventing the seeping water from flowing into the pipe through the inspection port of the inner cylinder; the drainage channel discharges the water in the groove outward, thereby preventing the water in the annular groove from accumulating;

[0018] 3. This utility model has multiple sealing measures. Sealing components are provided inside the device and at the connection with external pipes, which greatly improves the sealing performance of the device. The sealing components can be compressed and deformed under external force, thus fitting more tightly with the end face of the component and effectively achieving a sealing effect. After being squeezed by the flange, the protruding part of the inner rubber ring will stick tightly to the joint between the connecting flange and the connecting pipe, thereby achieving a sealing effect between the flanges and improving the sealing performance between the connecting flange and the connecting pipe. It also has a reliable vertical well waterproof unit. The inspection cover is used to close the inspection port. By opening an annular groove on the inner side of the upper end of the vertical section of the connecting pipe, the upper port of the inner cylinder is higher than the groove, so that water seeping into the vertical well from the wellhead can flow into the groove between the pipe and the inner cylinder, effectively preventing the seeping water from flowing into the pipe through the inspection port of the inner cylinder. The drainage channel drains the water in the groove outward, thereby preventing water accumulation inside the annular groove. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the inner structure of the vertical section of this utility model;

[0020] Figure 2 This is a schematic diagram of the end structure of the horizontal section of this utility model;

[0021] Figure 3 This is a half-sectional view of the present invention;

[0022] Figure 4 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This utility model Figure 3 Enlarged view of the structure at point B in the middle;

[0024] Figure 6 This is a schematic diagram of the sealing gasket in this utility model.

[0025] In the diagram: 1 connecting pipe, 2 pipe sealing unit, 21 connecting flange, 22 annular groove, 23 clamping block, 24 sealing gasket, 25 clamping hole, 26 inner rubber ring, 27 metal ring band, 28 fastening block, 29 sealing ring, 3 vertical shaft waterproof unit, 31 inspection cover, 32 rotating rod, 33 drainage channel, 34 drainage outlet, 35 inner cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6 This embodiment provides a technical solution: a pipe-to-manhole connection sealing device, including a connecting pipe 1, a pipe sealing unit 2, and a vertical shaft waterproofing unit 3;

[0028] Connecting pipe 1: It consists of two sections of pipe, one horizontal and one vertical, which are fixedly connected. The two ends of the horizontal section of connecting pipe 1 are connected to the laying pipeline, and the upper end of connecting pipe 1 is inserted into the interior of the cement-poured inspection well.

[0029] Pipe sealing unit 2: includes connecting flange 21, annular groove 22, locking block 23 and sealing gasket 24. Both ends of the horizontal section of connecting pipe 1 are fixedly connected to a connecting flange 21. A ring of flange holes is circumferentially arranged on the annular surface of the connecting flange 21. The outer port of the connecting flange 21 extends beyond the outer port of the connecting pipe 1, and an annular groove 22 is provided on the inner ring side of the port of the connecting flange 21. A ring of locking blocks 23 is circumferentially fixedly connected inside the annular groove 22 and on the side close to the inner ring. The locking block 23 has a slightly curved structure and a gap is left between two adjacent locking blocks 23. The sealing gasket 24 is locked inside the annular groove 22 and its outer end protrudes outward.

[0030] Vertical shaft waterproof unit 3: installed in the vertical section of connecting pipe 1.

[0031] The connecting flange 21 is used to connect the horizontal end of the connecting pipe 1 to the pipes laid on both sides. The outer end of the sealing gasket 24 protrudes outward and can be compressed when the two flanges are tightened, so that the gasket fits the flange more tightly, thereby improving the sealing performance of the pipe connection. The annular groove 22 is used for the installation of the sealing gasket 24, and the inner retaining block 23 can prevent the gasket from falling off when the sealing gasket 24 is installed.

[0032] The pipe sealing unit 2 also includes locking holes 25 and an inner rubber ring 26. The inner rubber ring 26 is fixedly connected to the inner ring side of the sealing gasket 24. The outer end of the inner rubber ring 26 is flush with the outer end face of the sealing gasket 24, and the inner end of the inner rubber ring 26 protrudes outward. A ring of locking holes 25 is arranged in a circumferential array on the inner ring side of the sealing gasket 24. The number, shape, and size of the locking holes 25 are the same as those of the locking block 23. The locking holes 25 are used for the installation and locking of the sealing gasket 24. When installing the sealing gasket 24, the locking holes 25 are aligned with the locking block 23 and locked in, so that the sealing gasket 24 can be installed conveniently and achieve the effect of locking and preventing it from falling off. After being squeezed by the flange, the protruding part of the inner rubber ring 26 will stick tightly to the joint between the connecting flange 21 and the connecting pipe 1, thereby achieving a sealing effect between the flanges and improving the sealing performance between the connecting flange 21 and the connecting pipe 1.

[0033] The pipe sealing unit 2 also includes metal rings 27, fastening blocks 28, and sealing rings 29. Four metal rings 27 are fixedly connected in a circumferential array to the inward-facing end of the connecting flange 21, forming a circular structure. The ends of adjacent metal rings 27 do not connect. A fastening block 28 is fixedly connected to the end of each metal ring 27, and adjacent fastening blocks 28 are fastened together with bolts. A sealing ring 29 is fitted onto the outer circumference of the connecting pipe 1, sandwiched between the outer wall of the connecting pipe 1 and the inner ring side of the metal rings 27. By using bolts to fasten each metal ring 27, the tightness of the connection between the connecting flange 21 and the connecting pipe 1 can be improved on the basis of welding. Furthermore, as the metal rings 27 tighten, the inner sealing ring 29 is also tightened, thereby further improving the sealing performance between the connecting flange 21 and the connecting pipe 1.

[0034] The vertical shaft waterproof unit 3 includes an inspection cover 31 and an inner cylinder 35. An annular groove is formed on the inner side of the upper end of the vertical section of the connecting pipe 1, creating an inner cylinder 35 that is separated from the inner wall of the vertical section of the connecting pipe 1. The height of the upper port of the inner cylinder 35 is between the upper port of the connecting pipe 1 and the bottom of the groove. A circular inspection cover 31 is threaded onto the port of the inner cylinder 35. By creating an annular groove on the inner side of the upper end of the vertical section of the connecting pipe 1, the upper port of the inner cylinder 35 is higher than the groove, allowing water seeping into the vertical shaft from the wellhead to flow into the groove between the pipe and the inner cylinder 35. This effectively prevents the seeping water from flowing into the pipe through the inspection port of the inner cylinder 35. The inspection cover 31 is used to seal the inspection port.

[0035] The vertical shaft waterproof unit 3 also includes a drainage channel 33 and a drain outlet 34. A ring of drainage channels 33 is arranged in a circular array inside the vertical section of the connecting pipe 1. The vertical section of the drainage channel 33 faces upwards and connects to the annular groove inside the connecting pipe 1. The lower section of the drainage channel 33 opens obliquely outwards and connects to the drain outlet 34 on the outside of the vertical section of the connecting pipe 1. Water flowing into the groove between the pipe and the inner cylinder 35 will be guided downwards along the vertical drainage channel 33 and discharged outwards from the drain outlet 34, thereby preventing water accumulation inside the annular groove.

[0036] The vertical shaft waterproof unit 3 also includes a rotating rod 32. A section of the rotating rod 32 is fixedly connected to the upper end of the inspection cover 31, and the middle position of the rotating rod 32 coincides with the center position of the inspection cover 31. By rotating the rotating rod 32, the shaft can be opened, allowing workers to unclog the pipes or inspect the internal wiring.

[0037] The working principle of the pipe and manhole connection sealing device provided by this utility model is as follows: This device has multiple sealing measures. Sealing components are provided inside the device and at the connection with the external pipe, which greatly improves the sealing performance of the device. At the connection with the laid pipe, the connecting flange 21 is used to connect the horizontal end of the connecting pipe 1 to the pipes laid on both sides. The outer end of the sealing gasket 24 protrudes outward and can be compressed when the two flanges are tightened, so that the gasket fits the flange more tightly, thereby improving the sealing performance of the pipe connection. The annular groove 22 is used for the installation of the sealing gasket 24. The inner locking block 23 can prevent the gasket from falling off when installing the sealing gasket 24. The locking hole 25 is used for the installation and locking of the sealing gasket 24. When installing the sealing gasket 24, the locking hole 25 and the locking block 23 are aligned and locked in, so that the sealing gasket 24 can be installed conveniently and has a locking and anti-loosening effect. Inside the device, bolts are used to tighten the metal rings 27, which improves the tightness of the connection between the connecting flange 21 and the connecting pipe 1, building upon the welding process. Furthermore, as the metal rings 27 tighten, the inner sealing ring 29 is also tightened, further enhancing the seal between the connecting flange 21 and the connecting pipe 1. Additionally, under the compression effect of the flange, the protruding portion of the inner rubber ring 26 adheres tightly to the joint between the connecting flange 21 and the connecting pipe 1, thus achieving a seal between the flanges while simultaneously improving the seal between the connecting flange 21 and the connecting pipe 1. This device also features a reliable vertical shaft waterproof unit 3 and an inspection cover 31 for sealing the inspection port. By opening an annular groove on the inner side of the upper end of the vertical section of the connecting pipe 1, the upper end of the inner cylinder 35 is higher than the groove, allowing water seeping into the vertical shaft from the wellhead to flow into the groove between the pipe and the inner cylinder 35, effectively preventing the seeping water from flowing into the pipe through the inspection port of the inner cylinder 35. The drainage channel 33 drains the water in the groove outward, thereby preventing water accumulation inside the annular groove. By rotating the rotating rod 32, the rotation can be opened, allowing workers to unclog the pipe or inspect the internal wiring.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sealing device for connecting a pipeline to a manhole, characterized in that: It includes a connecting pipe (1), a pipe sealing unit (2), and a vertical shaft waterproofing unit (3); Connecting pipe (1): It is made of two sections of pipe body, horizontal and vertical, fixedly connected. The two ends of the horizontal section of the connecting pipe (1) are connected to the laying pipeline, and the upper end of the connecting pipe (1) is inserted into the interior of the cement-poured inspection well. Pipe sealing unit (2): includes connecting flange (21), annular groove (22), locking block (23) and sealing gasket (24). Both ends of the horizontal section of the connecting pipe (1) are fixedly connected to a connecting flange (21). A ring of flange holes is opened in a circular array on the annular surface of the connecting flange (21). The outer port of the connecting flange (21) extends beyond the outer port of the connecting pipe (1). An annular groove (22) is opened on the inner ring side of the port of the connecting flange (21). A ring of locking blocks (23) is fixedly connected in a circular array inside the annular groove (22) and on the side close to the inner ring. The locking block (23) has a slightly curved structure. There is a gap between two adjacent locking blocks (23). The sealing gasket (24) is locked inside the annular groove (22) and its outer end protrudes outward. Vertical shaft waterproof unit (3): installed in the vertical section of the connecting pipe (1).

2. The sealing device for connecting a pipeline and a manhole according to claim 1, characterized in that: The pipe sealing unit (2) also includes a locking hole (25) and an inner rubber ring (26). The inner ring (26) is fixedly connected to the inner ring side of the sealing gasket (24). The outer end of the inner rubber ring (26) is flush with the outer end face of the sealing gasket (24). The inner end of the inner rubber ring (26) protrudes outward. A ring of locking holes (25) is arranged in a circular array on the inner ring side of the sealing gasket (24). The number, shape and size of the locking holes (25) are the same as those of the locking block (23).

3. The sealing device for connecting a pipeline and a manhole according to claim 2, characterized in that: The pipe sealing unit (2) also includes a metal ring band (27), a fastening block (28) and a sealing ring (29). The connecting flange (21) has four metal ring bands (27) fixedly connected in a circumferential array at its inward end. The four metal ring bands (27) form a circular structure. The ends of two adjacent metal ring bands (27) do not connect to each other. A fastening block (28) is fixedly connected to the end of each metal ring band (27). Two adjacent fastening blocks (28) are fastened by bolts. A sealing ring (29) is fitted on the outer circumference of the connecting pipe (1). The sealing ring (29) is sandwiched between the outer wall of the connecting pipe (1) and the inner ring side of the metal ring band (27).

4. The sealing device for connecting a pipeline and a manhole according to claim 1, characterized in that: The vertical shaft waterproof unit (3) includes an inspection cover (31) and an inner cylinder (35). The upper inner side of the vertical section of the connecting pipe (1) is provided with an annular groove facing downward, thereby forming an inner cylinder (35) separated from the inner wall of the vertical section of the connecting pipe (1). The height of the upper port of the inner cylinder (35) is between the upper port of the connecting pipe (1) and the bottom of the groove. The port of the inner cylinder (35) is internally threaded with a circular inspection cover (31).

5. A sealing device for connecting a pipeline and a manhole according to claim 4, characterized in that: The vertical shaft waterproof unit (3) also includes a drainage channel (33) and a drain outlet (34). The interior of the vertical section of the connecting pipe (1) is provided with a ring of drainage channels (33) arranged in a circular array. The vertical section of the drainage channel (33) is connected to the annular groove inside the connecting pipe (1) with the vertical section facing upward. The lower section of the drainage channel (33) is opened obliquely outward and is connected to the drain outlet (34) opened on the outside of the vertical section of the connecting pipe (1).

6. A sealing device for connecting a pipeline and a manhole according to claim 4, characterized in that: The vertical shaft waterproof unit (3) also includes a rotating rod (32). A section of the rotating rod (32) is fixedly connected to the upper end of the inspection cover (31). The middle position of the rotating rod (32) coincides with the center position of the inspection cover (31).

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