CN110985781A - Water pump and turbine top cover high-pressure pipeline connecting structure - Google Patents
Water pump and turbine top cover high-pressure pipeline connecting structure Download PDFInfo
- Publication number
- CN110985781A CN110985781A CN201911233072.XA CN201911233072A CN110985781A CN 110985781 A CN110985781 A CN 110985781A CN 201911233072 A CN201911233072 A CN 201911233072A CN 110985781 A CN110985781 A CN 110985781A
- Authority
- CN
- China
- Prior art keywords
- top cover
- pipe body
- side wall
- water pump
- snap ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
- F16L23/028—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a water pump and turbine top cover high-pressure pipeline connecting structure, which comprises: the end part of the pipe body penetrates through the side wall of the top cover, and a groove structure surrounding the pipe body is arranged on the outer side wall of the pipe body; one side of the clamping ring is clamped in the groove structure, and the other side of the clamping ring is clamped in a clamping groove preset in the edge, adjacent to the pipe, of the side wall of the top cover; and the flange is connected with the pipe body and is closed on the side wall of the top cover. Through the shape structure and the cooperation relation setting of body, snap ring and flange among this pipeline draw bail, accomplished to the body towards the inside or outside spacing of motion of top cap, also convenient to use later stage maintenance process's dismantlement in the while to a very big degree. The pipe body in the pipe connection structure is connected without being welded in the inner wall of the top cover like the traditional operation, and the problem that destructive disassembly is needed in the later maintenance process is avoided.
Description
Technical Field
The invention belongs to the technical field of connection and fixation of pipe bodies in water turbines, and particularly relates to a water turbine top cover high-pressure pipeline connection structure. .
Background
As shown in fig. 1, the existing pump turbine pipeline is provided with a hole on the outer wall of the top cover, and a radial sealing element 104 is used for sealing the space between a steel pipe 103 and the outer hole, so as to increase the flexibility of the pipeline and prevent the problem of weld cracking caused by vibration of a high-pressure pipeline; the outer side is attached to the top cover side wall 102 by a flange 105 to provide for the removable function of the pipeline.
The pipeline connecting structure 100 can be used when the pressure is low, but when the pressure of the pipeline is high, the flexible expansion amount formed by the radial sealing element 104 is uncontrollable, and the high-pressure water can push the whole pipeline out of the inner wall 102 of the top cover to cause a major accident of flooding a factory building.
And then, a plurality of follow-up units adopt the gusset to weld the internal pipeline to be dead in the top cap, then can cause the pipeline can't dismantle. The rib plates are cut off and replaced during unit maintenance every time, the pipeline loses flexibility after being welded, and the joints of the rib plates and the pipeline are cracked and leak water after long-term operation.
Disclosure of Invention
The invention aims to: in order to overcome the problems of the prior art, the water pump and turbine top cover high-pressure pipeline connecting structure is convenient to disassemble, assemble and maintain and can adapt to various water pressures.
The purpose of the invention is realized by the following technical scheme:
a water pump turbine top cap high pressure line connection structure, the line connection structure includes: the end part of the pipe body penetrates through the side wall of the top cover, and a groove structure surrounding the pipe body is arranged on the outer side wall of the pipe body; one side of the clamping ring is clamped in the groove structure, and the other side of the clamping ring is clamped in a clamping groove preset in the edge, adjacent to the pipe, of the side wall of the top cover; and the flange is connected with the pipe body and is closed on the side wall of the top cover.
Through the shape structure and the cooperation relation setting of body, snap ring and flange among this pipeline draw bail, accomplished to the body towards the inside or outside spacing of motion of top cap, also convenient to use later stage maintenance process's dismantlement in the while to a very big degree. The pipe body in the pipe connection structure is connected without being welded in the inner wall of the top cover like the traditional operation, and the problem that destructive disassembly is needed in the later maintenance process is avoided.
According to a preferred embodiment, a gap is provided between the snap ring and the groove structure. Through set up the clearance between snap ring and groove structure, guaranteed the flexonics between snap ring and body, reserved the inflation volume for body and/or snap ring, avoided body and snap ring because of the coefficient of thermal expansion difference between, damage connection structure when causing the thermal expansion in the use to this pipeline draw bail's structural stability has been increased.
According to a preferred embodiment, a plurality of radial seals are provided between the tubular body and the side wall of the top cover.
According to a preferred embodiment, an axial seal is provided between the flange and the side wall of the top cover.
According to a preferred embodiment, the radial seal and/or the axial seal are formed by a rubber ring body.
According to a preferred embodiment, the snap ring is formed by two half ring bodies which are matched with the groove structure.
According to a preferred embodiment, the cross section of the snap ring is a square cross section.
According to a preferred embodiment, the gap between the snap ring and the groove structure is arranged along the radial direction of the pipe body.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that:
the shape structure and the matching relation of the pipe body, the snap ring and the flange in the pipeline connecting structure are arranged, so that the pipe body is limited when moving towards the inside or the outside of the top cover, and the characteristic of bidirectional flow of a water circuit in a water pump turbine is adapted. Meanwhile, the disassembly of the later maintenance process of a user is facilitated to a great extent. The pipe body in the pipe connection structure is connected without being welded on the inner wall of the top cover like the traditional operation, and the problem that destructive disassembly is needed in the later maintenance process is avoided.
Drawings
FIG. 1 is a schematic view of a conventional piping connection structure;
FIG. 2 is a schematic view of the high pressure line coupling of the present invention;
wherein, 100-pipeline connection structure, 101-top cover, 102-top cover side wall, 103-steel pipe, 104-radial sealing element, 105-flange, 200-pipeline connection structure, 201-top cover, 202-flange, 203-axial sealing element, 204-pipe body, 205-radial sealing element and 206-snap ring.
Detailed Description
The following non-limiting examples serve to illustrate the invention.
Referring to fig. 2, there is shown a water pump turbine head high pressure pipe coupling structure, the pipe coupling structure 200 at least comprising: flange 202, tubular body 204, and snap ring 206. The flange 202 is used for connecting and fixing a pipeline to be connected with the pipe body 204. The pipe body 204 is used for guiding in or guiding out high-pressure water in the water pump turbine. The snap ring 206 is used to complete the position limiting of the tube 204.
Preferably, the end of the tube 204 is disposed through the sidewall of the top cover 201. So as to realize the water flow input and output in the lateral direction. Further, the pipe body 204 may be made of ZG04Cr13Ni4Mo material, so that the pipe body 204 has higher strength and the structural reliability is improved.
Preferably, a plurality of radial seals 205 are disposed between the tube 204 and the sidewall of the top cap 201. The radial seal 205 is disposed around the outside of the tube 204 to complete a radial seal between the tube 204 and the sidewall of the cap 201. Meanwhile, through the radial sealing element 205, flexible connection between the side walls of the pipe body 204 and the top cover 201 is ensured, and the problem that the connection structure is damaged when the heat expansion is caused in the use process due to different thermal expansion coefficients of the side walls of the pipe body 204 and the top cover 201 is solved.
Further, a groove structure surrounding the tube body 204 is provided on the outer side wall of the tube body 204. The design of the groove structure reserves a containing space for the clamping of the snap ring 206 to the pipe body 204.
Preferably, one side of the snap ring 206 is snapped into the groove structure. The other side of the snap ring 206 is clamped in a preset clamping groove in the edge of the side wall of the top cover 201 adjacent to the pipe body 204. Therefore, through the design of the structure and the assembly relation of the snap ring 206, the limit of the movement of the pipe body 204 towards the inner side direction of the side wall of the top cover 201 is completed.
Further, the snap ring 206 is formed by two half ring bodies matched with the groove structure. The snap ring 206 is designed into a two-part half-ring structure, so that the snap ring 206 is convenient to mount and dismount. Preferably, the cross-section of the snap ring 206 may be circular or square, or even other regular or irregular cross-sections.
Preferably, a gap is provided between the snap ring 206 and the groove structure. Through set up the clearance between snap ring 206 and groove structure, guaranteed the flexonics between snap ring 206 and body 204, reserved the inflation volume for body 204 and/or snap ring 206, avoided body 204 and snap ring 206 because of the coefficient of thermal expansion difference, damage connection structure's problem when having avoided causing the heat expansion in the use to this pipeline connection structure's structural stability has been increased.
Further, the cross-section of the snap ring 206 is a square cross-section, and the gap between the snap ring 206 and the groove structure is arranged along the radial direction of the pipe body 204. The snap ring 206 does not have a gap in the limiting direction of the pipe 204, which is beneficial to ensuring the stability of the pipe, and avoids the pipe 204 from vibrating when conveying high-pressure water.
Preferably, the flange 202 is connected to the tubular body 204 and fits over the sidewall of the top cover 201. Therefore, the limit arrangement of the pipe body 204 towards the outer side of the side wall of the top cover 201 is completed through the matching design between the flange 202 and the pipe body 204.
Further, an axial sealing member 203 is disposed between the flange 202 and the sidewall of the top cover 201. The sealing arrangement in the axial direction between the flange 202 and the side wall of the top cover 201 is completed.
Preferably, the radial seal 205 and/or the axial seal 203 may be made of rubber rings, or even rings made of other flexible materials.
When the pipeline connecting structure is installed, a plurality of radial sealing elements 205 are sleeved on the side wall direction of the end part of the pipe body 205. Then, the pipe body 205 is penetrated through the side wall of the top cover 201, the snap ring 206 is clamped in the groove structure reserved on the pipe body 204, and then the pipe body 204 is moved towards the inner side of the side wall of the top cover 201, so that the snap ring 206 is simultaneously nested in the clamping groove on the side wall of the top cover 201, and the limit of the movement of the pipe body 204 towards the inner side direction of the side wall of the top cover 201 is completed. Then, the flange 202 is butted with the pipe body 204, and is screwed on the side wall of the top cover 201 through bolts to realize the assembly of the pipeline connecting structure 200.
Meanwhile, the shape structure and the matching relationship of the pipe body 204, the snap ring 206 and the flange 202 in the pipeline connecting structure are arranged, so that the pipe body 204 is limited in moving towards the inside or the outside of the top cover 201, and the characteristic of bidirectional flow of a water pipeline in a water pump turbine is adapted. Meanwhile, the disassembly of the later maintenance process of a user is facilitated to a great extent. The pipe body 204 in the pipe connection structure is connected without being welded in the inner wall of the top cover 201 like the traditional operation, and the problem that destructive disassembly is needed in the later maintenance process is avoided.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a water pump turbine top cap high pressure line draw bail which characterized in that, the line draw bail includes:
the end part of the pipe body penetrates through the side wall of the top cover, and a groove structure surrounding the pipe body is arranged on the outer side wall of the pipe body;
one side of the clamping ring is clamped in the groove structure, and the other side of the clamping ring is clamped in a clamping groove preset in the edge, adjacent to the pipe, of the side wall of the top cover;
and the flange is connected with the pipe body and is closed on the side wall of the top cover.
2. The water pump turbine head high pressure pipe coupling structure of claim 1, wherein a gap is provided between the snap ring and the groove structure.
3. The water pump turbine head high pressure pipe coupling structure of claim 1, wherein a plurality of radial seals are provided between the pipe body and the side wall of the head.
4. The water pump turbine head high pressure pipe coupling structure of claim 1, wherein an axial seal is provided between the flange and the side wall of the head.
5. The water pump turbine head high pressure pipe coupling structure of any one of claims 3 or 4, wherein the radial seal and/or the axial seal are formed of rubber ring bodies.
6. The water pump turbine head high pressure pipe coupling structure of claim 2, wherein the snap ring is formed by two half ring bodies matching with the groove structure.
7. The water pump turbine head high pressure pipe coupling structure of claim 6, wherein the cross section of the snap ring is a square cross section.
8. The coupling structure for the high pressure pipe of the water pump turbine head as claimed in claim 7, wherein the gap between the snap ring and the groove structure is formed along the radial direction of the pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233072.XA CN110985781A (en) | 2019-12-05 | 2019-12-05 | Water pump and turbine top cover high-pressure pipeline connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233072.XA CN110985781A (en) | 2019-12-05 | 2019-12-05 | Water pump and turbine top cover high-pressure pipeline connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985781A true CN110985781A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911233072.XA Pending CN110985781A (en) | 2019-12-05 | 2019-12-05 | Water pump and turbine top cover high-pressure pipeline connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110985781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889029A (en) * | 2024-03-15 | 2024-04-16 | 东方电气集团东方电机有限公司 | Water turbine top cover and water turbine |
-
2019
- 2019-12-05 CN CN201911233072.XA patent/CN110985781A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889029A (en) * | 2024-03-15 | 2024-04-16 | 东方电气集团东方电机有限公司 | Water turbine top cover and water turbine |
| CN117889029B (en) * | 2024-03-15 | 2024-05-24 | 东方电气集团东方电机有限公司 | Water turbine top cover and water turbine |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220601 Address after: 188 Huanghe West Road, Jingyang District, Deyang City, Sichuan Province Applicant after: DONGFANG ELECTRIC MACHINERY Co.,Ltd. Applicant after: Jilin Dunhua pumped storage Co., Ltd Address before: 188 Huanghe West Road, Jingyang District, Deyang City, Sichuan Province Applicant before: DONGFANG ELECTRIC MACHINERY Co.,Ltd. |