CN214121524U - Mounting structure of runner cavity pressure-resistant device - Google Patents
Mounting structure of runner cavity pressure-resistant device Download PDFInfo
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- CN214121524U CN214121524U CN202023270758.7U CN202023270758U CN214121524U CN 214121524 U CN214121524 U CN 214121524U CN 202023270758 U CN202023270758 U CN 202023270758U CN 214121524 U CN214121524 U CN 214121524U
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Abstract
The utility model discloses a runner cavity pressure tight device mounting structure, including oil-supply head and feedback pole, the feedback pole is installed on the oil-supply head rotation axis, be provided with a plurality of cavity oilholes on the oil-supply head, still include pressure tight device, the pressure tight device cover is established on the feedback pole, the pressure tight device installation on the oil-supply head terminal surface, the last inlet port that is provided with of pressure tight device, the inlet port with the cavity oilhole is linked together. The utility model discloses: 1. the installation is convenient, the utility model discloses only need aim at the combined surface bolt hole during the installation, fastening bolt and installed manometer and pipeline and can carry out withstand voltage test. 2. The utility model discloses when carrying out withstand voltage test, as long as guarantee utility model installation time each between the part leakproofness, just can guarantee the accuracy and the reliability of runner withstand voltage test result. 3. The utility model discloses when carrying out runner withstand voltage test, only need suppress it through the pneumatic pump, then observe the barometer just can accomplish the experiment.
Description
Technical Field
The utility model relates to a hydraulic turbine technical field especially relates to a runner cavity pressure resistant device mounting structure.
Background
The rotation of the runner blade of the axial-flow Kaplan turbine is realized by driving a pivot shaft by a piston or a cylinder body in a wheel body through oil pressure, so that the sealing of pressure oil at the blade is difficult, and once the oil leakage condition of the runner blade is serious, the safe and stable operation of the water-turbine generator set is greatly threatened. The inspection and the replacement of the sealing parts of the rotating wheel and the inspection test of the sealing performance of the rotating wheel can be realized only by the rotating wheel pressure-resistant test system in the A-level maintenance process of the water turbine generator set.
As the pressure of the runner cavity pressure test is required to be 0.3MPa in the process of the runner cavity pressure test, the pressure is kept unchanged for 30min under the test pressure. Therefore, the joint of the joint surfaces is ensured to be free from air leakage, and the rotating wheel cavity and the operating oil pipe are ensured to be free from leakage.
The prior art uses the pneumatic pump to pressurize when carrying out withstand voltage test, adopt rubber extrusion and bolted connection to seal between operation oil pipe and the pressure-resistant device, pressurize behind the runner cavity oil charge, need personnel to go to runner room and relevant equipment department and observe whether there is the oil leakage on the spot, because partial equipment surface itself has non-leakage greasy dirt when the unit is installed, and the runner room illumination is not enough, and partial relevant equipment space is narrow can't observe, lead to the leakproofness of unable complete assurance runner cavity and relevant equipment oil circuit, there is the seepage phenomenon to appear in the operation of certain probability, cause very big threat to hydroelectric generating set's safety, steady operation.
Disclosure of Invention
The utility model discloses aim at solving one of the above-mentioned technical problem at least, provide a runner cavity pressure resistant device mounting structure, make things convenient for hydroelectric set runner cavity withstand voltage test to overhaul, guarantee the operation of hydroelectric set safety and stability.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a runner cavity pressure-resistant device mounting structure, includes oil-supply head and feedback pole, the feedback pole is installed on the oil-supply head rotation axis, be provided with a plurality of cavity oilholes on the oil-supply head, its characterized in that: the pressure-resistant device is sleeved on the feedback rod and mounted on the end face of the oil receiver, an air inlet is formed in the pressure-resistant device, and the air inlet is communicated with the cavity oil hole.
As an improvement of the technical scheme, a sealing sleeve is sleeved on the feedback rod and detachably connected with the oil receiver through a connecting piece.
As an improvement of the above technical solution, the connecting member is a screw, and a cover edge is provided on an end surface of the sealing sleeve, and the cover edge is detachably mounted on an end surface of the oil supply head by the screw.
As an improvement of the above technical scheme, the sealing sleeves are arranged in two groups, wherein one group of the sealing sleeves is arranged on the periphery of the inner wall of the oil receiver, highland barley paper for sealing is arranged in the region where the end face of the oil receiver is abutted to the cover edge, the other group of the sealing sleeves is sleeved on the feedback rod, and the two groups of the cover edges can be buckled in opposite directions.
As an improvement of the technical scheme, the two groups of the covers are provided with sealing rings along the opposite buckling positions.
As an improvement of the technical scheme, the sealing ring is made of rubber.
As an improvement of the technical scheme, the air inlets are arranged into two groups, wherein one group of the air inlets is provided with a quick connector, and the other group of the air inlets is provided with a barometer.
As an improvement of the above technical solution, the pressure-resistant device and the oil receiver are connected by a bolt.
As an improvement of the above technical solution, a rubber pad is sleeved on the bolt, and the rubber pad is located between the pressure-resistant device and the oil receiver.
As an improvement of the technical scheme, the pressure-resistant device is also provided with a hoisting hole.
Compared with the prior art, the beneficial effects of this application are:
the mounting structure of the runner cavity pressure-resistant device has the following beneficial effects;
1. the installation is convenient, the utility model discloses only need aim at the combined surface bolt hole during the installation, fastening bolt and installed manometer and pipeline and can carry out withstand voltage test, it is very convenient to install.
2. The utility model discloses it is practical reliable, the utility model discloses during carrying out withstand voltage test, suppress pressure to 0.3Mpa pressurize, it has or not to descend to inspect the runner cavity leakproofness to last 30min observation manometer pressure, as long as guarantee utility model when installing with the leakproofness of combined surface, just can guarantee the accuracy and the reliability of runner withstand voltage test result.
3. Convenient to operate, the utility model discloses when carrying out runner withstand voltage test, only need to suppress it through the pneumatic pump and observe the manometer, just can accomplish the experiment, easy operation is understandable.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural view of a sealing sleeve according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a withstand voltage test apparatus in an embodiment of the present invention;
fig. 4 is a schematic view of the threaded connection of the pressure resistance experiment apparatus in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can be intervening components, and when a component is referred to as being "disposed in the middle," it is not just disposed in the middle, so long as it is not disposed at both ends, but rather is within the scope of the middle. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the utility model provides a runner cavity pressure-resistant device mounting structure, including oil receiver 1 and feedback rod 2, feedback rod 2 is installed on the oil receiver 1 rotation axis, be provided with a plurality of cavity oilholes 3 on the oil receiver 1, it is specific, in this application, cavity oilhole 3 is four, four cavity oilhole 3 is in with circular array arrangement on the oil receiver 1 terminal surface. The mounting structure further comprises a pressure-resistant device 4, wherein the pressure-resistant device 4 is sleeved on the feedback rod 2, and the pressure-resistant device 4 is mounted on the end face of the oil receiver 1. Specifically, in some embodiments of the present application, the pressure-resistant device 4 has a shape similar to a circular discus, and has an outer diameter dimension same as the outer diameter of the combination surface of the operation oil pipe at the oil receiver, and an inner diameter greater than the radius of the feedback rod 2 and less than the distance from the center of the feedback rod 2 to the inner edge of the cavity operation oil pipe. In order to meet the pressure-resistant requirement, the material is made of cast iron, the thickness is about 10cm, the combined surface of the cast iron and the operation oil pipe is as smooth as possible without burrs, and the roughness is qualified. And the pressure-resistant device 4 is provided with an air inlet 5, and the air inlet 5 is communicated with the cavity oil hole 3. Preferably, in the embodiment of the present application, the air inlet 5 is provided as one, it should be noted that the air inlet 5 may be communicated with any one of the cavity oil holes 3, as long as it is possible to inject air into the cavity of the rotary wheel through the air inlet 5 and the cavity oil hole 3 by using an external air source. Of course, in other embodiments, the air inlet holes 5 may be provided in multiple sets, and each set of the air inlet holes 5 is communicated with one set of the cavity oil holes 3, which has the same effect.
Referring to fig. 1 and 2, in order to ensure the air tightness of the whole installation structure and to enable the pressure test to be carried out smoothly, a sealing sleeve 6 is sleeved on the feedback rod 2, and the sealing sleeve 6 is detachably connected with the oil receiver 1 through a connecting piece 7.
Specifically, the connecting piece 7 is a screw, a cover edge 8 is arranged on the end face of the sealing sleeve 6, and the cover edge 8 is detachably mounted on the end face of the oil receiver 1 through the screw. It should be noted that the inner wall of the sealing sleeve 6 can be tightly attached to the outer wall of the feedback rod 2, so as to achieve a better sealing effect. In other embodiments, the connecting element 7 may be a stud or other connecting element, as long as the cover edge can be detachably mounted on the end face of the oil receiver 1.
Referring to fig. 2, further, the sealing sleeves 6 are arranged in two groups, wherein one group of the sealing sleeves 6 is arranged on the periphery side of the inner wall of the oil receiver 1, and highland barley paper 9 for sealing is arranged on the region where the end surface of the oil receiver 1 is abutted to the cover edge 8. After the highland barley paper 9 is compacted on the end face of the oil receiver 1 by the oil receiver 1, the highland barley paper 9 can seal up a gap between the oil receiver 1 and the sealing sleeve 6, so that the air tightness of the whole device is improved. The other group of sealing sleeves 6 are sleeved on the feedback rod 2, and the two groups of cover edges 8 can be buckled oppositely. In order to further improve the air tightness, sealing rings 11 are arranged at the opposite buckling positions of the two groups of the cover edges 8, and the sealing rings 11 are tightly attached to the outer wall of the feedback rod 2. Two sets of lid is along 8 lock backs in opposite directions, can force sealing ring 11 produces deformation, will be two sets of lid along the gap between 8 and with two sets of lid along 8 with the gap shutoff between the feedback rod 2. Preferably, the sealing sleeve 6 is made of copper, and the sealing ring 11 is made of rubber.
Referring to fig. 1 and 3, in some embodiments of the present application, the air inlets 5 are arranged in two groups, wherein one group of the air inlets 5 is provided with a quick connector 12, and the other group of the air inlets 5 is provided with an air pressure gauge 13. The quick connector 12 can be quickly connected with an external air source through a pipeline to inflate the cavity of the runner, and the air source can be a common pneumatic pump. The barometer 13 can detect the air pressure in the cavity of the runner, and a commonly-used barometer in the prior art is adopted.
Referring to fig. 1 and 4, the pressure-resistant device 4 and the oil receiver 1 are connected by a bolt 15. In a preferred embodiment of the present application, the bolts 15 are provided in four sets, and the pressure resistance device 4 is correspondingly provided with four threaded holes. Further, a rubber gasket 16 is sleeved on the bolt 15, the rubber gasket 16 is located between the pressure-resistant device 4 and the oil receiver 1, and a proper amount of sealing grease can be applied to the rubber gasket 16 to ensure that the sealing between the pressure-resistant device 4 and the oil receiver 1 is good. It should be noted that the rubber pad 16 has a large compression ratio, and is not torn or damaged during the process of fastening the pressure-resistant device 4 and the oil receiver 1 by the bolt 15, and the rubber pad 16 can prevent gas from leaking from the place where the pressure-resistant device 4 and the oil receiver 1 are connected by the bolt 15, so that the whole device can maintain good air tightness. The rubber pads 16 can be arranged in a plurality of groups, and each group of bolts 15 is sleeved with the rubber pads 16. In other embodiments, the rubber pads 16 may be provided in a set, and each set of the bolts 15 is passed through a separate set of the rubber pads 16.
Referring to fig. 3 and 4, a lifting hole 17 is further formed on the pressure resistance device 4 for convenience of installation.
The utility model discloses a use: before carrying out a runner cavity pressure resistance test, determining the precondition with the test: the unit is basically installed back to the pit except the oil receiver, the rotating wheel and the operation oil pipe are completely installed back, the rotating wheel cavity is filled with oil, and the oil is filled to the upper part of the short shaft of the oil receiver.
Checking to confirm that the combined surface between the pressure-resistant device 4 and the oil receiver 1 is smooth and free from stains, checking whether the pressure-resistant device 4 is connected with a bolt screw hole and the quick connector 12 is deformed or damaged, and preparing the proper sealing ring 11, the rubber gasket 16, the bolt 15, a wrench, a pneumatic pump, a quick connector air pipe, a lifting lug and a safety rope.
As shown in fig. 1, the rubber pad 16 is placed on the oil receiver 1, and the rubber pad 16 has a thickness of about 1.5-2.5mm, and can be coated with a proper amount of sealing grease to ensure good sealing. The position of the feedback rod 2 is provided with the sealing ring 11 tightly attached to the feedback rod 2, the sealing ring is tightly pressed by the sealing sleeve 6 matched with the feedback rod in size, the highland barley paper 9 is additionally arranged at the screw position for sealing, and the highland barley paper is fastened by using screws.
And (3) matching a safety rope with the lifting lug, adjusting the position of the pressure-resistant device 4 to be aligned with the bolt hole, and placing the pressure-resistant device on the combined surface of the oil receiver 1. And checking whether the barometer 13 is normally undamaged, installing and fastening the barometer 13, connecting a pneumatic pump air pipe with the quick connector 12, and ensuring reliable connection. And connecting the pneumatic pump with an air source, and starting to perform a pressure test.
And (3) closing the pressure relief valve of the pneumatic pump in place by checking, starting an air inlet switch of the pneumatic pump, slowly pressurizing, simultaneously observing the rising value of the barometer 13, stopping pressurizing when the air pressure value of the barometer 13 rises to 0.3MPa, carrying out a pressure resistance test, and after 30min, if the barometer 13 is not changed, ensuring that the pressure resistance of the cavity of the runner is qualified. If the pressure can not be maintained and the air leakage sound can be heard, whether the pipeline valve is well sealed or not is checked, and the pressure resistance test is carried out again after the pipeline valve is recovered.
The mounting structure of the runner cavity pressure-resistant device has the following beneficial effects;
1. the installation is convenient, the utility model discloses only need aim at the combined surface bolt hole during the installation, fastening bolt and installed manometer and pipeline and can carry out withstand voltage test, it is very convenient to install.
2. The utility model discloses it is practical reliable, the utility model discloses during carrying out withstand voltage test, suppress pressure to 0.3Mpa pressurize, it has or not to descend to inspect the runner cavity leakproofness to last 30min observation manometer pressure, as long as guarantee utility model installation time between each part the leakproofness, just can guarantee the accuracy and the reliability of runner withstand voltage test result.
3. Convenient to operate, the utility model discloses during runner withstand voltage test, only need to suppress it through the pneumatic pump and observe it barometer 13 just can accomplish the experiment, and easy operation is understandable.
The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a runner cavity pressure-resistant device mounting structure, includes oil-supply head (1) and feedback pole (2), install feedback pole (2) on oil-supply head (1) rotation axis, be provided with a plurality of cavity oilholes (3) on oil-supply head (1), its characterized in that: still include pressure-resistant device (4), pressure-resistant device (4) cover is established on feedback pole (2), pressure-resistant device (4) installation on oil receiver (1) terminal surface, be provided with on pressure-resistant device (4) inlet port (5), inlet port (5) with cavity oilhole (3) are linked together.
2. A runner cavity pressure equipment mounting structure according to claim 1, wherein said feedback rod (2) is sleeved with a sealing sleeve (6), and said sealing sleeve (6) is detachably connected with said oil receiver (1) through a connecting member (7).
3. The runner cavity pressure equipment mounting structure of claim 2, wherein the connecting member (7) is a screw, a cover rim (8) is provided on the end surface of the sealing sleeve (6), and the cover rim (8) is detachably mounted on the end surface of the oil receiver (1) by the screw.
4. The mounting structure of a pressure-proof device for rotor cavity of claim 3, wherein the sealing sleeves (6) are provided in two sets, one set of the sealing sleeves (6) is provided on the inner wall periphery of the oil receiver (1), the highland barley paper (9) for sealing is provided on the region where the end surface of the oil receiver (1) abuts against the cover rim (8), the other set of the sealing sleeves (6) is sleeved on the feedback rod (2), and the two sets of the cover rims (8) can be buckled in opposite directions.
5. The mounting structure of pressure-proof device for cavity of runner of claim 4, wherein the two sets of said covers are provided with sealing rings (11) at the opposite buckling positions of the cover edges (8).
6. A runner cavity pressure equipment mounting structure according to claim 5, wherein the seal ring (11) is made of rubber.
7. The mounting structure of a pressure-proof device for a runner cavity according to claim 1, wherein the air inlets (5) are arranged in two groups, wherein one group of the air inlets (5) is provided with a quick coupling (12), and the other group of the air inlets (5) is provided with a barometer (13).
8. A runner cavity pressure withstanding device installation structure according to claim 1, wherein the pressure withstanding device (4) and the oil receiver (1) are connected by bolts (15).
9. The runner cavity pressure equipment mounting structure of claim 8, wherein the bolt (15) is sleeved with a rubber pad (16), and the rubber pad (16) is located between the pressure equipment (4) and the oil receiver (1).
10. The runner cavity pressure equipment device mounting structure of claim 1, wherein the pressure equipment device (4) is further provided with a hoisting hole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023270758.7U CN214121524U (en) | 2020-12-30 | 2020-12-30 | Mounting structure of runner cavity pressure-resistant device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023270758.7U CN214121524U (en) | 2020-12-30 | 2020-12-30 | Mounting structure of runner cavity pressure-resistant device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214121524U true CN214121524U (en) | 2021-09-03 |
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ID=77486233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023270758.7U Active CN214121524U (en) | 2020-12-30 | 2020-12-30 | Mounting structure of runner cavity pressure-resistant device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214121524U (en) |
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2020
- 2020-12-30 CN CN202023270758.7U patent/CN214121524U/en active Active
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