CN212407680U - Device for reducing water pressure of outer wall of pressure steel pipe and pressure pipeline - Google Patents
Device for reducing water pressure of outer wall of pressure steel pipe and pressure pipeline Download PDFInfo
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- CN212407680U CN212407680U CN202020623377.3U CN202020623377U CN212407680U CN 212407680 U CN212407680 U CN 212407680U CN 202020623377 U CN202020623377 U CN 202020623377U CN 212407680 U CN212407680 U CN 212407680U
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Abstract
The utility model discloses a device and pipeline under pressure for reducing pressure steel pipe outer wall water pressure, including the valve body, be provided with annular rib in the valve body, annular rib divides the valve body into feed liquor end and liquid outlet end, still be provided with one-way current limiting device in the valve body, one-way current limiting device runs through annular rib, be connected with the elastic connecting piece between one end of one-way current limiting device and the annular rib, the elastic connecting piece is located the feed liquor end of valve body; and the other end of the one-way flow limiting device is in sealing contact with the annular rib when the valve body is in a closed state. The utility model discloses a set up the valve body on penstock, inside flowing into penstock with the outside rivers of penstock inside, reduce the outside water pressure of penstock to the internal and external pressure of balanced penstock reaches the effect of protection penstock body, increases penstock's life.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering, specifically belong to a device and pipeline under pressure for reducing penstock outer wall water pressure.
Background
At present, in the construction of the underground pressure steel pipe of the hydraulic engineering, because the leakage water is larger, the larger water pressure exists between the outer wall of the pressure steel pipe and the outer concrete, the structure of the pressure steel pipe is easy to damage, the deformation and the damage of the pressure steel pipe body are caused, in order to prevent this, most construction sites choose to embed a pre-buried pipe in the outer wall of the steel penstock for drainage, the pressure of underground water is divided by the embedded pipe, the pressure borne by the outer wall of the pressure steel pipe is reduced, but the embedded pipe needs to embed longer pipelines, the cost is high, and the embedded pipe has the danger of damage or deformation when being embedded, and simultaneously the embedded pipe has the problems of high maintenance cost and difficult maintenance, therefore, a new device for relieving the water pressure on the outer wall of the pressure steel pipe is urgently needed, the pressure steel pipe body protecting device is used for solving the problem of unbalanced pressure inside and outside the pressure steel pipe, and therefore the effect of protecting the pressure steel pipe body is achieved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the prior art, the utility model provides a device for reducing penstock outer wall water pressure solves among the prior art hydraulic engineering underground penstock body and receives water pressure and easily causes penstock body to warp the problem of damaging.
In order to achieve the above object, the utility model provides a following technical scheme: the device for reducing the water pressure on the outer wall of the pressure steel pipe is characterized by comprising a valve body, wherein an annular rib is arranged in the valve body and divides the valve body into a liquid inlet end and a liquid outlet end;
the rear cover is in sealing contact with the annular rib when the elastic connecting piece is in a natural state;
the rear cover is not in contact with the annular rib in a compressed state of the elastic connection member.
Furthermore, the one-way flow limiting device further comprises a valve, the front cover and the rear cover are respectively arranged at two ends of the valve, the valve penetrates through the annular rib, and the diameters of the front cover and the rear cover are larger than the inner diameter of the annular rib.
Furthermore, the end face of the front cover is an annular hollow or honeycomb face, or the end face of the front cover close to the annular rib is provided with a support body, and the end face of the rear cover is solid.
Furthermore, a liquid inlet hole is formed in the pipeline of the pressure steel pipe, the liquid inlet end of the valve body is connected with the liquid inlet hole through threads, and the liquid outlet end of the valve body faces towards the inner wall of the pipeline of the pressure steel pipe.
Further, a liquid inlet hole is formed in the pipeline of the pressure steel pipe, a reinforcing plate is arranged on the outer wall of the pipeline of the pressure steel pipe, a threaded hole is formed in the reinforcing plate, the central axis of the threaded hole coincides with the central axis of the liquid inlet hole, the reinforcing plate is in threaded connection with the liquid inlet end of the valve body, and the liquid outlet end of the valve body faces towards the inner wall of the pipeline of the pressure steel pipe.
Further, the rear cover is in sealing contact with the annular rib through a sealing ring.
Further, the elastic connecting piece is a compression spring.
Furthermore, a sealing gasket is arranged between the valve body and the reinforcing plate.
The utility model also provides a pipeline under pressure, including the penstock, the feed liquor hole has been seted up on the pipeline of penstock, penstock's pipeline outer wall is provided with the stiffening plate, set up threaded hole on the stiffening plate, the axis of screw hole coincides with the axis in feed liquor hole, valve body demountable installation is on stiffening plate and penstock, the play liquid end of valve body is towards penstock inner wall.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model provides a device for reducing the water pressure of the outer wall of a pressure steel pipe, which solves the problems that the water leakage is large, the large water pressure exists between the outer wall of the pressure steel pipe and the outer concrete, the structure of the pressure steel pipe is easy to destroy, and the appearance of the pressure steel pipe is damaged in the construction of the underground pressure steel pipe of the current hydraulic engineering, when the water pressure outside the pressure steel pipe is high, the utility model uses the cooperation of an elastic connecting piece, a one-way current limiting device and an annular rib to lead the water flow outside the pressure steel pipe to flow into the pressure steel pipe, reduces the water pressure outside the pressure steel pipe, thereby balancing the internal and external pressure of the pressure steel pipe, achieving the effect of protecting the pressure steel pipe body, prolonging the service life of the pressure steel pipe, and simultaneously ensuring that the fluid in the pressure steel pipe can not flow out of the pressure steel, the utility model discloses only need set up feed liquor hole installation valve body on penstock's pipeline, the valve body damages, to the valve body change can, it is more convenient to maintain, has reduced penstock's cost of maintenance simultaneously, the economic nature is higher.
Further, the utility model discloses the terminal surface of well protecgulum is cyclic annular hollow, the terminal surface that honeycomb or protecgulum are close to annular rib is provided with the supporter, the terminal surface of back lid is solid, guaranteed when the outside rivers of pressure steel pipe get into inside the pressure steel pipe that the assurance is when the outside water pressure of pressure steel pipe is too high, elastic connection destroys the back, in the outside rivers of pressure steel pipe continue to get into the pressure steel pipe, the valve body continues to reduce the outside water pressure of pressure steel pipe to the harm of pressure steel pipe, for maintenance personal provides the time of changing the valve body, moreover the utility model discloses the terminal surface of well protecgulum divide into different situations, can deal with the different water pressure of pressure steel pipe outer wall, the utility model discloses a flexibility can be higher, and the scope of suitable water pressure is.
Further, the utility model discloses a pipeline under pressure outer wall is provided with the stiffening plate, has strengthened pressure steel pipe's atress intensity, and the valve body cooperates with the stiffening plate simultaneously, increases the installation fastness of valve body, has also increased valve body and pressure steel pipe's leakproofness.
Further, the utility model discloses well back lid passes through sealing washer sealing contact with annular rib, has guaranteed the leakproofness of valve body, is provided with sealed the pad moreover between valve body and the stiffening plate, makes the rigid contact between valve body and the stiffening plate change flexible contact into, has reduced the friction loss between valve body and the stiffening plate, has increased the life of valve body.
Further, the utility model provides a feed liquor hole still is used for the grout, and the back is accomplished in the grout, the installation valve body, and the valve body acts as the grout stopper to reduce the quantity of grout stopper, reduce pipeline under pressure's cost.
The utility model also provides a pipeline under pressure for reducing penstock outer wall water pressure, the utility model discloses a pipeline under pressure comprises pipeline under pressure, stiffening plate and valve body, and not only whole penstock's intensity is higher simultaneously can effectual reduction penstock outer wall water pressure, and life is longer, and the scope that is suitable for the place is wider, and is with low costs, suits and the industrialization.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic front view of the structure of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a partial cross-sectional view of the valve body as installed;
in the drawings: 1-valve body, 2-pin hole, 3-front cover, 4-elastic connecting piece, 5-valve, 6-sealing ring, 7-rear cover, 8-embedded groove, 9-annular rib, 10-sealing pad, 11-reinforcing plate and 12-pressure steel pipe.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and fig. 3, the utility model provides a device for reducing pressure steel pipe outer wall water pressure, including valve body 1, be provided with annular rib body in the valve body 1, namely annular rib 9, wherein, annular rib 9 and valve body 1 integrated into one piece, annular rib 9 divides valve body 1 into feed liquor end and play liquid end, still be provided with one-way current limiting device in the valve body 1, one-way current limiting device runs through annular rib 9, be connected with elastic connecting piece 4 between one end of one-way current limiting device and annular rib 9, elastic connecting piece 4 is located the feed liquor end of valve body 1; when the valve body 1 is in a closed state, namely the elastic connecting piece 4 is in an original state, the other end of the one-way flow limiting device is in sealing contact with the annular rib 9, preferably, the other end of the one-way flow limiting device is in sealing contact with the annular rib 9 through a sealing ring 6, preferably, the sealing ring 6 is made of polytetrafluoroethylene materials, and the sealing performance of the valve body 1 is guaranteed; when the valve body 1 is in an open state, the other end of the one-way flow limiting device is far away from the annular rib 9, and the elastic connecting piece 4 is in a compressed state;
specifically, a liquid inlet hole is formed in the pressure steel pipe 12, the liquid outlet end of the valve body 1 is connected with the pressure steel pipe 12 through the liquid inlet hole of the pressure steel pipe 12, when the water pressure outside the pressure steel pipe 12 is too high, water flow outside the pressure steel pipe 12 acts on the valve body 1, the valve body 1 is opened, and water flow outside the pressure steel pipe 12 enters the pressure steel pipe 12 through the valve body 1, so that the water pressure outside the pressure steel pipe 12 is reduced, and the damage of the water flow outside the pressure steel pipe 12 to the pressure steel pipe 12 is reduced.
In a preferred embodiment of the present embodiment, the one-way flow limiting device comprises a valve 5 and an end cap, the end cap comprises a front cap 3 and a rear cap 7, the valve 5 penetrates through the annular rib 9, the front cap 3 and the rear cap 7 are respectively arranged at two ends of the valve 5, the front cap 3 is arranged at the liquid inlet end of the valve body 1, the rear cap 7 is arranged at the liquid outlet end of the valve body 1, wherein the diameters of the front cap 3 and the rear cap 7 are both larger than the inner diameter of the annular rib 9;
as shown in fig. 3, in the present embodiment, the end surface of the front cover 3 is annular hollow, and the end surface of the rear cover 7 is solid; a sealing ring 6 is arranged between the rear cover 7 and the annular rib 9, wherein the sealing ring 6 is arranged on the end surface of the rear cover 7, an elastic connecting piece 4 is arranged between the front cover 3 and the annular rib 9, preferably, the elastic connecting piece 4 is a compression spring, the spring adopts an anti-corrosion spring, the maximum pressure bearing capacity is 50Kpa, in an initial state, the rear cover 7 is in close contact with the annular rib 9 through the sealing ring 6, the spring is in a normal state, when fluid enters the valve body 1, the fluid applies pressure to the front cover 3, the front cover 3 applies work to the compression spring, the rear cover 7 moves away from the annular rib 9 along with the compression spring, the valve body 1 is in an open state, and the fluid flows out of the valve body 1 through;
in one embodiment of the present invention, the end surface of the front cover 3 is a honeycomb surface, and the end surface of the rear cover 7 is solid;
in another embodiment of the present invention, the end surface of the front cover 3 is solid, the end surface of the front cover close to the annular rib is provided with a support body, and the end surface of the rear cover 7 is solid;
specifically, when the water pressure of pressure steel pipe outer wall was too big, compression spring damaged, the valve body can keep the connected state, the valve body can continue to be the pressure steel pipe decompression, reduce the damage of pressure steel pipe outer wall water pressure to pressure steel pipe and increase maintenance duration for the maintenance personal, maintenance personal only need with the spring of damage change can, simultaneously, the terminal surface of protecgulum is the form of difference, be less than the order that the honeycomb face is less than the solid surface according to cyclic annular hollow stress point, thereby deal with the different water pressure of pressure steel pipe outer wall, carry out corresponding selection according to actual construction conditions can.
In one embodiment of this embodiment, a thread is disposed outside the valve body 1, during the manufacturing process of the pressure steel pipe 12, a liquid inlet hole is formed in the pipeline of the pressure steel pipe 12, and a thread matching the thread of the valve body 1 is disposed on the inner wall of the liquid inlet hole, in this embodiment, the thread of the valve body 1 is disposed at the liquid inlet end of the valve body 1, the valve body 1 is screwed into the liquid inlet hole of the pressure steel pipe 12 through the thread from the inner wall of the pressure steel pipe 12, the liquid inlet end of the valve body 1 penetrates through the pipeline of the pressure steel pipe 12, and the liquid outlet end of the valve body 1 faces the inside of the pressure steel pipe 12;
in another embodiment of this embodiment, as shown in fig. 4, the pipeline outer wall welding of pressure steel pipe 12 has stiffening plate 11, set up threaded hole on the stiffening plate 11, the axis of screw hole aligns with the axis of valve body 1, the feed liquor hole of pressure steel pipe 12 does not set up the screw thread, the outside of the play liquid end of valve body 1 is the smooth surface, the screw thread setting of valve body 1 is at the feed liquor end of valve body 1, from the threaded hole of pressure steel pipe 12 inner wall with valve body 1 through screw thread screw in stiffening plate 11, the play liquid end of valve body 1 and the gomphosis of the feed liquor hole of pressure steel pipe 12, preferably, be provided with sealed pad 10 between valve body 1 and the stiffening plate 11, be used for slowing down the friction between valve body 1 and the stiffening plate 11, prolong the life of valve body 1.
In this embodiment, as shown in fig. 2, a pin hole is formed on the end surface of the valve body 1, a corresponding installation tool is inserted into the pin hole 2, the valve body 1 is screwed into the pressure steel pipe 12 or into the reinforcing plate 11 on the inner wall of the pressure steel pipe 12, and the liquid outlet end of the valve body 1 faces the pressure steel pipe 12.
Specifically, the quantity of the liquid inlet holes formed in the pressure steel pipe can be operated according to the actual condition requirement.
Preferably, the valve body 1 in the embodiment is made of 316 stainless steel materials, and the maximum pressure is 15 MPa.
The utility model discloses a concrete installation step and operation method as follows:
a plurality of liquid inlet holes are formed in the pipeline of the pressure steel pipe 12, and the liquid inlet holes penetrate through the pressure steel pipe 12; a reinforcing plate 11 is welded on the outer wall of the pipeline of the pressure steel pipe 12 in an attaching mode, a threaded hole is formed in the reinforcing plate 11, and the central axis of the threaded hole is aligned with the axis of the liquid inlet hole; the valve body 1 is screwed into the reinforcing plate 11 through a thread, the liquid inlet end of the valve body 1 is embedded with the liquid inlet hole of the pressure steel pipe 12, and the pressure steel pipe 12 is installed; before the valve body 1 is installed, the thread of the liquid inlet hole of the pressure steel pipe 12 is cleaned, and if the thread is damaged, the thread needs to be repaired firstly; during installation, anti-loosening thread agents are required to be coated on the thread of the valve body 1 and the thread of the reinforcing plate 11 to ensure that the valve body 1 and the pressure steel pipe 12 are firmly installed, an installation tool is inserted into the pin hole 2 of the valve body 1, and the valve body 1 is screwed into the pressure steel pipe 12;
after valve body 1 is accomplished in the installation, if the feed liquor end water pressure of valve body 1 risees, water pressure makes the spring compression in the valve body 1, one-way current-limiting device produces the displacement, 3 displacement compression springs on the protecgulum, annular rib 9 is kept away from along with the removal of back lid 7, valve body 1 is in the open mode, rivers pass through valve body 1, the pressure of rivers is big more, the compression capacity of spring is big more, back lid 7 is big more with the distance of annular rib 9, thereby discharge is big more, if pressure exceeds the biggest bearing capacity of spring, the spring destroys the inefficacy, it can to change valve body 1.
Additionally, the utility model provides a pipeline under pressure for reducing pressure steel pipe outer wall water pressure adopts the above-mentioned device that reduces pressure steel pipe outer wall water pressure, including the penstock, the feed liquor hole has been seted up on penstock's the pipeline, penstock's pipeline outer wall is provided with the stiffening plate, set up threaded hole on the stiffening plate, the axis of screw hole coincides with the axis in feed liquor hole, valve body demountable installation is on stiffening plate and penstock, the play liquid end of valve body is towards the penstock inner wall, the utility model provides a pipeline under pressure intensity is higher, can bear bigger water pressure.
In addition, this valve body 1 has another kind of effect that is equivalent to the grout stopper, and the back is accomplished in the feed liquor hole grout of pressure steel pipe 12, installs valve body 1 to reduce the quantity of grout stopper, it is more economical and practical, wherein, need during the grout screw thread of the screw thread in feed liquor downthehole casing protection feed liquor hole of screwing in, after the grout is accomplished, the casing screw down, screw in valve body 1.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The device for reducing the water pressure of the outer wall of the pressure steel pipe is characterized by comprising a valve body (1), wherein an annular rib (9) is arranged in the valve body (1), the annular rib (9) divides the valve body (1) into a liquid inlet end and a liquid outlet end, a one-way flow limiting device is further arranged in the valve body (1), the one-way flow limiting device penetrates through the annular rib (9), two ends of the one-way flow limiting device are divided into a front cover (3) and a rear cover (7), the front cover (3) is located at the liquid inlet end of the valve body (1), the rear cover (7) is located at the liquid outlet end of the valve body (1), and an elastic connecting piece (4) is connected between the front cover (3) and the annular rib (9);
the rear cover (7) is in sealing contact with the annular rib (9) when the elastic connecting piece (4) is in a natural state;
the rear cover (7) is not in contact with the annular rib (9) when the elastic connecting piece (4) is in a compressed state.
2. The device for reducing the water pressure of the outer wall of the pressure steel pipe as claimed in claim 1, wherein the one-way flow limiting device further comprises a valve (5), the front cover (3) and the rear cover (7) are respectively arranged at two ends of the valve (5), the valve (5) penetrates through the annular rib (9), and the diameters of the front cover (3) and the rear cover (7) are both larger than the inner diameter of the annular rib (9).
3. The device for reducing the water pressure of the outer wall of the pressure steel pipe is characterized in that the end surface of the front cover (3) is an annular hollow or honeycomb surface or the end surface of the front cover (3) close to the annular rib (9) is provided with a support body, and the end surface of the rear cover (7) is solid.
4. The device for reducing the water pressure of the outer wall of the penstock (12) as claimed in claim 1, wherein the pipe of the penstock (12) is provided with a liquid inlet hole, the liquid inlet end of the valve body (1) is connected with the liquid inlet hole by a screw thread, and the liquid outlet end of the valve body (1) faces the inner wall of the pipe of the penstock (12).
5. The device for reducing the water pressure on the outer wall of the penstock (12) as claimed in claim 1, wherein the penstock (12) has a liquid inlet hole on its pipe, the outer wall of the penstock (12) has a reinforcing plate (11), the reinforcing plate (11) has a threaded hole, the central axis of the threaded hole coincides with the central axis of the liquid inlet hole, the reinforcing plate (11) is connected with the liquid inlet end of the valve body (1) by a screw thread, and the liquid outlet end of the valve body (1) faces the inner wall of the penstock (12) on its pipe.
6. The device for reducing the water pressure of the outer wall of the penstock as claimed in claim 1, characterized in that said rear cover is in sealing contact with the annular rib (9) by means of a sealing ring (6).
7. The device for reducing the water pressure of the outer wall of the penstock as claimed in claim 1, characterized in that the elastic connecting element (4) is a compression spring.
8. The device for reducing the water pressure of the outer wall of the penstock as claimed in claim 1, characterized in that a sealing gasket (10) is arranged between the valve body (1) and the reinforcing plate (11).
9. A pressure pipeline is characterized in that the device for reducing the water pressure of the outer wall of the pressure steel pipe in any one of claims 1 to 8 is adopted, the device comprises the pressure steel pipe (12), a liquid inlet hole is formed in the pipeline of the pressure steel pipe (12), a reinforcing plate (11) is arranged on the outer wall of the pipeline of the pressure steel pipe (12), a threaded hole is formed in the reinforcing plate, the central axis of the threaded hole coincides with the central axis of the liquid inlet hole, the valve body (1) is detachably mounted on the reinforcing plate (11) and the pressure steel pipe (12), and the liquid outlet end of the valve body (1) faces towards the inner wall of the pressure steel pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020623377.3U CN212407680U (en) | 2020-04-22 | 2020-04-22 | Device for reducing water pressure of outer wall of pressure steel pipe and pressure pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020623377.3U CN212407680U (en) | 2020-04-22 | 2020-04-22 | Device for reducing water pressure of outer wall of pressure steel pipe and pressure pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN212407680U true CN212407680U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020623377.3U Active CN212407680U (en) | 2020-04-22 | 2020-04-22 | Device for reducing water pressure of outer wall of pressure steel pipe and pressure pipeline |
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| CN (1) | CN212407680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350847A (en) * | 2020-04-22 | 2020-06-30 | 中国葛洲坝集团第三工程有限公司 | Device, pressure pipeline and method for reducing water pressure on outer wall of penstock |
-
2020
- 2020-04-22 CN CN202020623377.3U patent/CN212407680U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350847A (en) * | 2020-04-22 | 2020-06-30 | 中国葛洲坝集团第三工程有限公司 | Device, pressure pipeline and method for reducing water pressure on outer wall of penstock |
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