CN204807229U - Large -scale hydraulic turbine axle bush temperature sensor - Google Patents
Large -scale hydraulic turbine axle bush temperature sensor Download PDFInfo
- Publication number
- CN204807229U CN204807229U CN201520475233.7U CN201520475233U CN204807229U CN 204807229 U CN204807229 U CN 204807229U CN 201520475233 U CN201520475233 U CN 201520475233U CN 204807229 U CN204807229 U CN 204807229U
- Authority
- CN
- China
- Prior art keywords
- protection tube
- open slot
- temperature sensor
- temperature measuring
- metal ball
- 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.)
- Expired - Fee Related
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 3
- 230000002940 repellent Effects 0.000 claims 1
- 239000005871 repellent Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 abstract 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 abstract 1
- 239000000347 magnesium hydroxide Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000008187 granular material Substances 0.000 description 6
- 238000012856 packing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001846 repelling effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a large -scale hydraulic turbine axle bush temperature sensor, including the protection tube, be equipped with temperature element in it, still be equipped with the open slot of fixing on the protection tube internal perisporium in the protection tube, placed the hollow metal ball in the open slot, be equipped with a connecting rod on the ball face of hollow metal ball, be equipped with a separation blade that lies in the open slot outside on the connecting rod, the open slot inner chamber is close to the opening part and is equipped with the dog, the opposite side of hollow metal ball is equipped with the stay cord, and the other end of stay cord is connected with the bulge loop of fixing on the protection tube internal perisporium, the protection tube intussuseption is filled with magnesium hydroxide particles, fixing bolt, fixing bolt welds on the protection tube, the terminal box, the pressing from both sides of lead wire that still is connected with the sealed temperature element of locking in the terminal box is overlapped. The utility model discloses a shock resistance is strong, and life is high, and stability is good, and the reliability is high, operation convenient to use.
Description
Technical Field
The utility model relates to a temperature sensor especially relates to large-scale hydraulic turbine unit axle bush temperature sensor.
Background
A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. The temperature sensor is the core part of the temperature measuring instrument and has a plurality of varieties. The measurement method can be divided into a contact type and a non-contact type, and the measurement method can be divided into a thermal resistor and a thermocouple according to the characteristics of sensor materials and electronic elements.
In the temperature measuring environment of a large hydraulic turbine unit, the working condition environment is severe and the vibration is frequent. The existing temperature measuring element is easy to damage due to vibration under the environment, and the practical service life of the temperature measuring element is short mainly because the protection tube can not provide effective anti-vibration protection for the temperature measuring element.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough and provide a large-scale hydraulic turbine unit axle bush temperature sensor.
In order to achieve the above object, the utility model provides a large-scale hydraulic turbine unit axle bush temperature sensor, include:
the temperature measuring device comprises a protection tube, wherein a temperature measuring element is arranged in the protection tube; an open slot fixed on the inner peripheral wall of the protection tube is also arranged in the protection tube, a hollow metal ball is placed in the open slot, a connecting rod is arranged on the spherical surface of the hollow metal ball, and a blocking piece positioned outside the open slot is arranged on the connecting rod; a stop block is arranged in the inner cavity of the open slot and close to the opening; a pull rope is arranged on the other side of the hollow metal ball, and the other end of the pull rope is connected with a convex ring fixed on the inner peripheral wall of the protection tube; magnesium oxide particles are filled in the protective tube;
the fixing bolt is welded on the protection tube;
the temperature measuring device comprises a junction box, a temperature measuring element and a temperature measuring circuit, wherein a lead wire connected with the temperature measuring element and a cable led in from the outside are arranged in the junction box, and a wiring board for movably clamping the lead wire and the cable is also arranged in the junction box; the junction box is also connected with a jacket for locking and sealing the lead of the temperature measuring element; the outer surface of the jacket is provided with a rough surface.
Preferably, the aperture of the blocking piece is larger than that of the open slot, and the distance between the blocking piece and the top end of the hollow metal ball is smaller than the radial width of the open slot.
Preferably, the stop block and the baffle plate are made of permanent magnets with repelling polarities; and a metal ring is arranged on the outer side of the protection tube.
Preferably, the inner surface of the open slot is provided with an insulating layer.
Preferably, the surface of the hollow metal ball is covered with a rubber layer; the hollow metal ball is filled with wood chips.
Preferably, the magnesium oxide particles have a diameter of 1 to 3 mm.
Preferably, the temperature measuring element of the protection tube is a thin film platinum resistor.
Preferably, the protection tube is made of stainless steel.
Preferably, an acid-base meter is arranged on the jacket.
The utility model has the advantages that: push repeatedly through hollow metal ball and pack the granule, can consume the vibrations energy of protection tube fast, the shock strength of control protection tube to because in the cavity of the business turn over open slot of packing granule developments and protection tube, avoided a large amount of packing granules to flow on a large scale in the protection tube, be favorable to promoting the stability of protection tube. The kinetic energy on the protective tube can be converted into electromagnetic energy to be released quickly through the matching of the stop block, the stop sheet and the metal ring. Therefore, the vibration frequency of the protection tube is effectively controlled, the probability of damage of the temperature measuring element due to vibration is greatly reduced, and the practical service life of the temperature measuring element is prolonged.
Drawings
Fig. 1 is a schematic view of an overall structure of an embodiment of a temperature sensor for bearing bushes of a large hydraulic turbine unit according to the present invention;
FIG. 2 is a partial enlarged view A of FIG. 1;
wherein,
10. a jacket;
20. a junction box;
30. a wiring board;
40. fixing the bolt;
50. protecting the tube;
511. an open slot;
512. a connecting rod;
513. a baffle plate;
514. a hollow metal ball;
515. a stopper;
516. pulling a rope;
517. a convex ring.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 to 2, fig. 1 is a schematic view of an overall structure of an embodiment of a temperature sensor for bearing bushes of a large hydraulic turbine unit according to the present invention; fig. 2 is a partially enlarged view a of fig. 1.
As shown in fig. 1, the temperature sensor for bearing bushes of a large-scale water turbine set of the present invention includes a protection tube 50, wherein a plurality of anti-vibration devices are disposed on the inner peripheral wall of the protection tube 50, and each anti-vibration device is provided with a hole through which a temperature measuring element passes, and the temperature measuring element is disposed in the sealed protection tube 50; the anti-seismic device comprises an open slot 511 fixed on the inner peripheral wall of the protection tube 50, a hollow metal ball 514 is placed in the open slot 511, a connecting rod 512 is arranged on the spherical surface of the hollow metal ball 514, and a blocking piece 513 positioned outside the open slot 511 is arranged on the connecting rod 512; a plurality of stop blocks 515 are arranged in the inner cavity of the open slot 511 close to the opening; a pull rope 516 is arranged on the other side of the hollow metal ball, and the other end of the pull rope 516 is connected with a convex ring 517 fixed on the inner circumferential wall of the protection tube 50;
a fixing bolt 40, the fixing bolt 40 being welded to the protection pipe 50;
the temperature measuring device comprises a junction box 20, wherein a lead wire connected with a temperature measuring element and a cable led in from the outside are arranged in the junction box 20, and a wiring board 30 for movably clamping the lead wire and the cable is also arranged in the junction box 20; the junction box 20 is also connected with a jacket 10 for locking and sealing a lead of the temperature measuring element; the jacket 10 is provided with a rough surface on the outer surface. The installation is facilitated by the arrangement of the rough surface.
As an embodiment of the present invention, the aperture of the blocking piece 513 is larger than the aperture of the open slot 511, and the distance between the blocking piece 513 and the top end of the hollow metal ball 514 is smaller than the radial width of the open slot 511.
As an embodiment of the present invention, the stopper 515 and the blocking plate 513 are made of permanent magnets with repelling polarities; the outer side of the protection tube 50 is provided with a metal ring.
As an embodiment of the present invention, the inner surface of the open slot 511 is provided with a heat insulating layer.
As an embodiment of the present invention, the surface of the hollow metal ball 514 is covered with a rubber layer (not shown); the hollow metal balls 514 are filled with wood chips.
As an embodiment of the present invention, the diameter of the magnesium oxide particle is 1 to 3 mm.
As an embodiment of the present invention, the temperature measuring element of the protection tube 50 is a thin film platinum resistor.
As an embodiment of the present invention, the protection tube 50 is made of stainless steel.
As an embodiment of the present invention, an acid-base meter is provided on the jacket 10.
The jacket 10 is used for locking and sealing a temperature measuring element lead wire, so that the temperature measuring element IP68 is sealed. When the rear end lead is disturbed, the vibration cannot be transmitted to the wiring inside the temperature measuring element.
The protection tube 50 is made of stainless steel, a sealed cavity is formed after machining and welding the end part of the protection tube 50, and the protection tube plays a good role in protecting thermal resistance temperature measuring elements such as a thin film platinum resistor.
The fixing bolt 40 is used for installing the thermal resistor on the equipment according to a certain embedded depth.
The junction box 20 is used for protecting the wiring of the temperature measuring element, and plays a role in mechanical protection and waterproof protection.
The jacket 10 is used for locking and sealing a temperature measuring element lead wire, and sealing of the temperature measuring element above IP6 is achieved. In addition, the locking and fixing functions of the lead of the temperature measuring element are realized.
The terminal block 30 may adopt an existing screw press-connection structure or an existing disk-shaped spring pressing structure when fixing the lead and the cable.
To sum up, through the repeated pushing and filling of hollow metal ball 514 granule, can consume the vibrations energy of protection tube 50 fast, control protection tube 50's shock strength to because in the dynamic business turn over open slot 511 of packing granule and protection tube 50's cavity, avoided a large amount of packing granules to flow on a large scale in protection tube 50, be favorable to promoting protection tube 50's stability. The stop 515, the stop 513 and the metal ring are matched to convert the kinetic energy on the protection tube 50 into electromagnetic energy for quick release. Therefore, the vibration frequency of the protection tube 50 is effectively controlled, the damage probability of the temperature measuring element due to vibration is greatly reduced, and the practical service life of the temperature measuring element is prolonged.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (9)
1. A temperature sensor for bearing bushes of a large-scale hydraulic turbine unit is characterized by comprising,
the temperature measuring device comprises a protection tube, wherein a temperature measuring element is arranged in the protection tube; an open slot fixed on the inner peripheral wall of the protection tube is also arranged in the protection tube, a hollow metal ball is placed in the open slot, a connecting rod is arranged on the spherical surface of the hollow metal ball, and a blocking piece positioned outside the open slot is arranged on the connecting rod; a stop block is arranged in the inner cavity of the open slot and close to the opening; a pull rope is arranged on the other side of the hollow metal ball, and the other end of the pull rope is connected with a convex ring fixed on the inner peripheral wall of the protection tube; magnesium oxide particles are filled in the protective tube;
the fixing bolt is welded on the protection tube;
the temperature measuring device comprises a junction box, a temperature measuring element and a temperature measuring circuit, wherein a lead wire connected with the temperature measuring element and a cable led in from the outside are arranged in the junction box, and a wiring board for movably clamping the lead wire and the cable is also arranged in the junction box; the junction box is also connected with a jacket for locking and sealing the lead of the temperature measuring element; the outer surface of the jacket is provided with a rough surface.
2. The large-scale hydraulic turbine unit bearing bush temperature sensor as claimed in claim 1, wherein the aperture of the blocking piece is larger than that of the open slot, and the distance between the blocking piece and the top end of the hollow metal ball is smaller than the radial width of the open slot.
3. The bearing bush temperature sensor of the large-scale hydraulic turbine unit according to claim 1, wherein the stopper and the blocking piece are made of permanent magnets with polarities repellent to each other; and a metal ring is arranged on the outer side of the protection tube.
4. The bearing shell temperature sensor for the large-scale hydraulic turbine unit as claimed in claim 1, wherein the inner surface of the open slot is provided with an insulating layer.
5. The large-scale hydraulic turbine unit bearing shell temperature sensor according to claim 1, wherein the surface of the hollow metal ball is covered with a rubber layer; the hollow metal ball is filled with wood chips.
6. The large hydro-turbine bearing shell temperature sensor according to claim 1, wherein the magnesium oxide particles have a diameter of 1 to 3 mm.
7. The large-scale turbine unit bearing shell temperature sensor according to claim 1, wherein the protective tube temperature measuring element is a thin film platinum resistor.
8. The large-scale turbine unit bearing shell temperature sensor according to any one of claims 1, wherein the protection tube is made of stainless steel.
9. The large-scale hydraulic turbine unit bearing shell temperature sensor according to any one of claim 1, wherein an acid-base meter is arranged on the jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520475233.7U CN204807229U (en) | 2015-06-30 | 2015-06-30 | Large -scale hydraulic turbine axle bush temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520475233.7U CN204807229U (en) | 2015-06-30 | 2015-06-30 | Large -scale hydraulic turbine axle bush temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204807229U true CN204807229U (en) | 2015-11-25 |
Family
ID=54592036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520475233.7U Expired - Fee Related CN204807229U (en) | 2015-06-30 | 2015-06-30 | Large -scale hydraulic turbine axle bush temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204807229U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939591A (en) * | 2017-12-21 | 2018-04-20 | 四川大唐国际甘孜水电开发有限公司 | A kind of large and medium hydro-generator bearing bush temperature guard method |
| CN110514310A (en) * | 2019-09-25 | 2019-11-29 | 温州伟力汽车部件有限公司 | Exhaust gas temperature sensor |
| CN112525376A (en) * | 2020-11-23 | 2021-03-19 | 无锡笃行创联技术有限公司 | Assembled temperature sensor capable of multi-point detection |
| CN112953582A (en) * | 2021-01-29 | 2021-06-11 | 维沃移动通信有限公司 | Electronic device |
-
2015
- 2015-06-30 CN CN201520475233.7U patent/CN204807229U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939591A (en) * | 2017-12-21 | 2018-04-20 | 四川大唐国际甘孜水电开发有限公司 | A kind of large and medium hydro-generator bearing bush temperature guard method |
| CN110514310A (en) * | 2019-09-25 | 2019-11-29 | 温州伟力汽车部件有限公司 | Exhaust gas temperature sensor |
| CN112525376A (en) * | 2020-11-23 | 2021-03-19 | 无锡笃行创联技术有限公司 | Assembled temperature sensor capable of multi-point detection |
| CN112953582A (en) * | 2021-01-29 | 2021-06-11 | 维沃移动通信有限公司 | Electronic device |
| CN112953582B (en) * | 2021-01-29 | 2023-07-25 | 维沃移动通信有限公司 | Electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20210630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |