CN210637179U - Pressure pulsation sensor mounting structure suitable for metal lining type runner - Google Patents
Pressure pulsation sensor mounting structure suitable for metal lining type runner Download PDFInfo
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- CN210637179U CN210637179U CN201920563763.5U CN201920563763U CN210637179U CN 210637179 U CN210637179 U CN 210637179U CN 201920563763 U CN201920563763 U CN 201920563763U CN 210637179 U CN210637179 U CN 210637179U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model provides a pressure pulsation sensor mounting structure suitable for metal lining type runner, can install the pressure pulsation sensor directly in metal lining type runner inner wall, and then guaranteed the data authenticity and the validity that the pressure pulsation sensor gathered from the source; the pressure measuring seat and the end cover of the pressure measuring seat adopt a detachable blocking structure, so that the pressure pulsation sensor is prevented from being damaged by mortar or sundries before flowing water in a flow passage, and the later-period maintenance of the pressure pulsation sensor is facilitated; the cable tube connecting seat and part of the cable tubes are protected by the connecting seat sleeves, so that the phenomenon that the concrete outside the flow channel damages the thin-wall weld joint structures between the cable tube connecting seat and the pressure measuring seat and between the cable tubes in the pouring process is avoided, and the reliability of the whole sensor mounting structure is further ensured. In addition, the cable pipe adopts the cable sleeve to protect, avoids being damaged by improper construction action.
Description
Technical Field
The utility model belongs to the technical field of water conservancy water and electricity, especially, relate to a pressure pulsation sensor mounting structure suitable for metal lining type runner.
Background
The flow channel (volute and draft tube) of the hydroelectric generating set usually adopts a metal lining type structure, the pressure pulsation of the flow channel is one of important indexes reflecting the hydraulic stability of the hydroelectric generating set, whether the pressure pulsation signal (including amplitude, pulsation characteristic and frequency) in a specific range of the flow channel of the hydroelectric generating set can be accurately monitored, and the safe and stable operation of a power station is directly related.
At present, the collection mode of the pressure pulsation signal of the runner of the hydroelectric generating set is generally that a pressure measuring water pipe communicated with the outer wall of a metal lining of the runner is led to a set state monitoring system, and a pressure pulsation sensor arranged in the system is utilized to collect the pressure water in the pressure measuring water pipe. Although the method is simple and reliable, the pressure pulsation signal in the flow channel is likely to be weakened or deformed due to interaction with the outside after being transmitted for a long distance through the pressure measuring water pipe, and further the pressure pulsation amplitude, characteristics and frequency acquired by the pressure pulsation sensor are greatly different from the actual value of the flow channel of the unit. Therefore, the pressure pulsation sensor is directly arranged on the outer wall of the metal lining of the flow channel, and the signal is directly transmitted to the unit state monitoring system through the waterproof cable in the cable embedded pipe.
The pressure pulsation sensor is installed on the outer side of the metal lining of the flow channel in an adherence manner, and the installation structure of the pressure pulsation sensor needs to have reliable sealing performance so as to prevent high-pressure tail water from permeating into a cable buried pipe and finally flooding a plant besides simple and reliable structure and convenient installation and maintenance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pressure pulsation sensor mounting structure suitable for metal lining type runner to exist not enough among the prior art.
To this end, the above object of the present invention is achieved by the following technical solutions:
a pressure pulsation sensor mounting structure suitable for a metal lining type flow channel comprises a pressure measuring seat, wherein the pressure measuring seat is fixedly welded at an opening of the metal lining type flow channel, a mounting position is arranged at one end, close to the inner wall side of the metal lining type flow channel, of the pressure measuring seat, a pressure measuring seat end cover is fixed in the mounting position, a threaded through hole is formed in the center of the pressure measuring seat end cover, a pressure pulsation sensor measuring head is fixed at one end, close to the outer wall side of the metal lining type flow channel, of the threaded through hole, and a blocking screw plug is arranged at the other end of the threaded through hole; the pressure measuring seat is fixedly provided with a cable tube connecting seat at one end close to the outer wall side of the metal lining type flow channel, the other end of the cable tube connecting seat is provided with a first perforated sealing plate, and the center of the first perforated sealing plate penetrates through a cable tube; and a waterproof cable is arranged in the cable pipe, and one end of the waterproof cable is connected to a pressure pulsation sensor measuring head.
When adopting above-mentioned technical scheme, the utility model discloses can also adopt or make up and adopt following further technical scheme:
preferably, the outside of cable pipe connecting seat is equipped with the connecting seat sleeve pipe that is used for protecting cable pipe connecting seat and partial cable pipe, connecting seat sheathed tube one end and pressure measurement seat welded fastening, the sheathed tube other end of connecting seat is equipped with the foraminiferous shrouding of second, the cable pipe is passed in the middle of the foraminiferous shrouding of second.
Preferably, a cable sleeve is arranged on the outer side of the cable tube outside the connecting seat sleeve, and one end of the cable sleeve is welded and fixed to the second sealing plate with holes.
Preferably, a sealing groove is formed in an interface between the pressure measuring seat end cover and the pressure measuring seat, and an O-shaped sealing ring is installed in the sealing groove.
Preferably, an inner hexagonal socket head cap screw is arranged between the pressure measuring end cover and the pressure measuring base so as to fix the pressure measuring end cover on the pressure measuring base.
The utility model has the advantages that: the utility model provides a mounting structure can with pressure pulsation sensor direct mount in metal lining type runner inner wall, and then guaranteed data authenticity and validity that pressure pulsation sensor gathered from the source. The utility model provides a pressure measurement seat and pressure measurement seat end cover among the mounting structure adopt detachable block structure, except guaranteeing that pressure pulsation sensor avoids being damaged by mortar or debris before the runner leads to water, the later stage pressure pulsation sensor's of still being convenient for maintenance. The utility model provides a cable pipe connecting seat and partial cable duct among mounting structure adopt the connecting seat sleeve pipe to protect to avoid runner outside concrete to destroy the thin wall weld structure between cable pipe connecting seat and pressure measuring seat, the cable duct the two pouring the in-process, and then guarantee whole sensor mounting structure's reliability. Furthermore, the utility model provides a cable pipe among the mounting structure adopts cable sleeve to protect, avoids being harmed by improper construction action. The utility model provides a mounting structure is simple reliable, and the installation is maintained conveniently, has fine application sight.
Drawings
Fig. 1 is a schematic view of a pressure pulsation sensor mounting structure suitable for a metal lining type flow channel provided by the present invention.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a pressure pulsation sensor mounting structure suitable for metal lining type runner, include with metal lining type runner trompil department welded fastening's pressure measurement seat 1. The pressure measuring base 1 is provided with an installation position 11 on the inner wall side of the flow channel. The mounting location 11 is provided with a plurality of screw holes. The pressure measuring seat end cover 3 is fixed at the screw hole of the pressure measuring seat by using the hexagon socket head cap screw 2. The center of the end cover 3 of the pressure measuring base is provided with a thread through hole, one end of the thread through hole can be used for fixing the pressure pulsation sensor 4, and the other end of the thread through hole can be used for fixing the plugging screw plug 5. And a sealing groove is arranged on the interface of the pressure measuring seat end cover 2 and the pressure measuring seat 1, and an O-shaped rubber sealing ring 6 is arranged in the sealing groove. The pressure measuring seat 1 is welded and fixed with one end of the cable tube connecting seat 7 on the outer wall side of the flow channel. The other end of the cable tube connecting seat 7 is plugged by a first hole-carrying sealing plate 8. The first perforated closing plate 8 and the cable tube 9 are fixed by adopting a socket welding structure. The cable tube connector base 7 and the first apertured closure plate 8 are externally protected by a connector base sleeve 10. One end of the connecting seat sleeve 10 is welded and fixed with the pressure measuring seat 1, the other end of the connecting seat sleeve is plugged by using a second sealing plate 11 with holes, and the connecting seat sleeve 10 protects the cable connecting seat 7 and part of the cable tubes 9. The outside of the cable tube 9 is protected by a cable sleeve 12. One end of the cable sleeve 12 is welded and fixed with the second closing plate with holes 11.
The mounting structure is specifically constructed by:
1. in order to facilitate the pressure measuring seat 1 to be sleeved into the metal lining type flow passage, firstly, a round hole is formed in the metal lining type flow passage according to the outer diameter of the pressure measuring seat 1, and a certain fit clearance is reserved;
2. sleeving the pressure measuring seat 1 into the opening of the metal lining type flow channel, keeping one end of the pressure measuring seat flush with the inner wall of the flow channel, and then welding and fixing;
3. fixing a pressure measuring base end cover 3 provided with an O-shaped rubber sealing ring 6 on a mounting position 11 by using an inner hexagonal socket head cap screw 2, then plugging a threaded hole in the center of the pressure measuring base end cover 3 by using a plugging screw plug 5, and plugging gaps between the pressure measuring base end cover 2 and a pressure measuring base 1 and between the inner hexagonal socket head cap screw 2 and the threaded hole by using epoxy resin;
4. plugging one end of a cable tube connecting seat 7 by using a first perforated sealing plate 8, then welding and fixing the other end of the cable tube connecting seat 7 on the outer wall side of a flow channel of a pressure measuring seat 1, and ensuring that the centers of the cable tube connecting seat 7 and the pressure measuring seat 1 are consistent;
5. inserting a cable tube 9 into the through hole of the first hole sealing plate 8, and firmly welding;
6. sleeving a connecting seat sleeve 10 into a cable tube connecting seat 7, a first band-hole sealing plate 8 and a cable tube 9, and welding and fixing one end of the connecting seat sleeve 10 on the outer wall side of a flow channel of a pressure measuring seat 1;
7. the foam polystyrene is filled among the connecting seat sleeve 10, the cable tube connecting seat 7, the first perforated sealing plate 8 and the cable tube 9, and then the other end of the connecting seat sleeve 10 is plugged by using the second perforated sealing plate 11;
8. sleeving a cable sleeve 12 into the cable tube 9, and welding and fixing one end of the cable sleeve 12 and a second sealing plate with holes 11;
9. after pouring of concrete on the periphery of the flow channel is completed, selecting a machine to melt epoxy resin between the pressure measuring seat end cover 3 and the pressure measuring seat 1 and between the inner hexagonal socket head cap screw 2 and the screw hole thereof, and taking down the pressure measuring seat end cover 3;
10. a waterproof cable 13 of the pressure pulsation sensor 4 is inserted into a cable pipe 9 and led to a unit state monitoring system, then the pressure pulsation sensor 4 is fixed in the pressure measuring base end cover 3, and the pressure measuring base end cover 3 is fixed in place again;
11. the gap between the pressure measuring base end cover 2 and the pressure measuring base 1 and the gap between the inner hexagonal socket head cap screw 2 and the screw hole thereof are plugged again by using epoxy resin;
12. before the water flows through the flow passage, the blocking screw plug 5 of the end cover 3 of the pressure measuring base is taken down by a machine selector.
The above detailed description is provided for explaining the present invention, and is only a preferred embodiment of the present invention, but not for limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made by the present invention are within the scope of the present invention.
Claims (5)
1. A pressure pulsation sensor mounting structure suitable for a metal lining type flow channel is characterized by comprising a pressure measuring seat, wherein the pressure measuring seat is fixedly welded at an opening of the metal lining type flow channel, a mounting position is arranged at one end, close to the inner wall side of the metal lining type flow channel, of the pressure measuring seat, a pressure measuring seat end cover is fixed in the mounting position, a threaded through hole is formed in the center of the pressure measuring seat end cover, a pressure pulsation sensor measuring head is fixed at one end, close to the outer wall side of the metal lining type flow channel, of the threaded through hole, and a blocking screw plug is arranged at the other end of the threaded through hole; the pressure measuring seat is fixedly provided with a cable tube connecting seat at one end close to the outer wall side of the metal lining type flow channel, the other end of the cable tube connecting seat is provided with a first perforated sealing plate, and the center of the first perforated sealing plate penetrates through a cable tube; and a waterproof cable is arranged in the cable pipe, and one end of the waterproof cable is connected to a pressure pulsation sensor measuring head.
2. The structure of claim 1, wherein a connecting seat sleeve for protecting the cable tube connecting seat and a part of the cable tube is provided on an outer side of the cable tube connecting seat, one end of the connecting seat sleeve is welded to the pressure measuring seat, and the other end of the connecting seat sleeve is provided with a second sealing plate with holes, and the center of the second sealing plate with holes passes through the cable tube.
3. The pressure pulsation sensor mounting structure for a metal liner type flow passage according to claim 2, wherein a cable bushing is provided on the outside of the cable tube outside the connecting seat bushing, and one end of said cable bushing is welded and fixed to the second perforated cover plate.
4. The structure of claim 1, wherein a sealing groove is formed at an interface between the pressure measuring base end cover and the pressure measuring base, and an O-ring is installed in the sealing groove.
5. The pressure pulsation sensor mounting structure for a metal liner type flow channel according to claim 1, wherein an inner hexagonal socket head screw is provided between said pressure measuring end cap and said pressure measuring base to fix said pressure measuring end cap to said pressure measuring base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920563763.5U CN210637179U (en) | 2019-04-24 | 2019-04-24 | Pressure pulsation sensor mounting structure suitable for metal lining type runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920563763.5U CN210637179U (en) | 2019-04-24 | 2019-04-24 | Pressure pulsation sensor mounting structure suitable for metal lining type runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210637179U true CN210637179U (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920563763.5U Active CN210637179U (en) | 2019-04-24 | 2019-04-24 | Pressure pulsation sensor mounting structure suitable for metal lining type runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210637179U (en) |
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2019
- 2019-04-24 CN CN201920563763.5U patent/CN210637179U/en active Active
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