CN210068248U - Over-temperature-prevention shaft vibration measuring device - Google Patents
Over-temperature-prevention shaft vibration measuring device Download PDFInfo
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- CN210068248U CN210068248U CN201920558789.0U CN201920558789U CN210068248U CN 210068248 U CN210068248 U CN 210068248U CN 201920558789 U CN201920558789 U CN 201920558789U CN 210068248 U CN210068248 U CN 210068248U
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Abstract
The utility model discloses a prevent axle measuring device that shakes of overtemperature, support the axle of axle bush outer peripheral face including the tip and shake the probe, the outside cover of axle shake probe has the metal covering, and the metal covering outer peripheral face is given vent to anger with the compressed air tubular metal resonator and is held the expert to link to each other, and compressed air carries out heat exchange and reduces axle shake probe operating temperature through compressed air tubular metal resonator entering metal covering is inside with the axle probe that shakes. Compared with the prior art, the utility model discloses technical scheme has advantages such as simple structure and high-efficient cooling, can prevent effectively that the axle bush probe high temperature from influencing normal work.
Description
Technical Field
The utility model relates to a generating set cooling technical field, in particular to prevent super temperature's axle measuring device that shakes.
Background
In the thermal power generation process, the operation state of a steam turbine of a generator set needs to be closely monitored in the operation process of the steam turbine, therefore, the shaft vibration probe for detecting the shaft vibration must be vertically installed on the outer peripheral surface of each bearing shoe, however, in the actual working process, a small amount of steam is leaked outwards from the joint surface of the steam turbine body, the leaked high-temperature steam is easily sprayed to the surface of the probe or the vicinity of the probe, and because the gap at the position where the probe is installed is narrow and is blocked by the heat-insulating material, the ambient temperature around the probe is up to 340 ℃, but the rated working temperature range of the probe is-25 ℃ to 180 ℃, the steam with higher temperature can lead the instantaneous temperature of the probe to reach 200 ℃, and the temperature value far exceeds the rated working temperature of the probe, therefore, the shaft vibration probe can work safely and reliably, and the real-time detection of the shaft vibration data is of great significance for ensuring the normal work of the generator set.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure and high-efficient cooling prevent super temperature's axle measuring device that shakes, aim at preventing that axle bush probe high temperature from influencing normal work.
In order to achieve the above object, the utility model provides a prevent axle measuring device that shakes of overtemperature, support the axle of axle bush outer peripheral face including the tip and shake the probe, the outside cover of axle shake probe has the metal covering, and the metal covering outer peripheral face is given vent to anger with the compressed air tubular metal resonator and is held the expert to be even, and compressed air carries out heat exchange through compressed air tubular metal resonator entering metal covering inside and axle shake the probe and reduce axle and shake probe operating temperature.
Preferably, the bottom edge of the metal cover is partially connected with the outer peripheral surface of the bearing bush, a gap is formed between the bottom edge of the metal cover and the outer peripheral surface of the bearing bush, and the air outlet end of the compressed air metal pipe penetrates through the top wall surface of the metal cover and extends into the metal cover.
Preferably, the air outlet of the compressed air metal pipe is opposite to the surface of the axial vibration probe and conveys air from top to bottom.
Preferably, the metal cover is a horn-shaped structure gradually expanding from the top to the bottom, and a plurality of vent holes are formed in the side wall of the metal cover.
Preferably, the bottom edge of the metal cover is connected with the peripheral surface of the bearing bush, the top end of the metal cover is provided with an exhaust port, the compressed air metal pipe penetrates through the bottom of the metal cover and extends into the metal cover, and the air outlet of the compressed air metal pipe is right aligned with the peripheral surface of the shaft vibration probe.
Preferably, the inner wall surface of the metal cover has a structure with two wide ends and a narrow middle part.
The utility model discloses technical scheme prior art has following advantage relatively:
the utility model discloses technical scheme is through setting up the metal covering in the axle probe outside that shakes to make compressed air get into the metal covering from the upper portion of metal covering inside, compressed gas top-down flows and shakes the probe with the axle and carry out the surface heat transfer cooling, compressed air still can follow the metal covering lower part and get into to the metal covering inside in addition, compressed gas flows from bottom to top and shakes the probe with the axle and carry out the surface heat transfer cooling, the utility model discloses technical scheme is through reducing the inside air temperature of metal covering, correspondingly makes the temperature reduction of the probe that shakes of axle. Meanwhile, the shaft vibration probe and the high-temperature steam are shielded and isolated by the metal cover, and the overhigh temperature of the shaft vibration probe caused by the high-temperature steam can be correspondingly avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an over-temperature-prevention axial vibration measurement device according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of the over-temperature-prevention shaft vibration measuring device according to embodiment 2 of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
22 | Exhaust port |
| 2 | Metal hood | 3 | Compressed |
| 21 | |
4 | Shaft vibration probe |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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 efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a prevent super temperature's axle measuring device that shakes.
Example 1
Referring to fig. 1, in the embodiment of the present invention, the over-temperature-preventing shaft vibration measuring device includes a shaft vibration probe 4 whose detecting end is supported on the outer peripheral surface of the bearing bush 1, a metal cover 2 is sleeved outside the shaft vibration probe 4, the outer peripheral surface of the metal cover 2 is communicated with the air outlet end of the compressed air metal tube 3, and the compressed air enters the metal cover 2 through the compressed air metal tube 3, thereby exchanging heat with the shaft vibration probe 4.
The edge part of the bottom of the metal cover 2 of the embodiment is connected with the peripheral surface of the bearing bush 1, a gap is arranged between the bottom of the metal cover 2 and the peripheral surface of the bearing bush 1, the air outlet end of the compressed air metal tube 3 penetrates through the top wall surface of the metal cover 2 and extends into the metal cover 2, and preferably, the air outlet end of the compressed air metal tube 3 of the embodiment is just above the shaft vibration probe 4 and compressed air is conveyed from top to bottom.
The metal cover 2 of the present embodiment is a trumpet-shaped structure gradually expanding from the top to the bottom, and the side wall of the metal cover 2 is provided with a plurality of vent holes 21.
Referring to fig. 1, the working principle of the over-temperature-prevention shaft vibration measuring device of the present embodiment is as follows:
inside compressed gas entered into metal casing 2 from metal casing 2's top to compressed gas blows from metal casing 2's inside top-down, makes the lower compressed gas of temperature can cool off the outer peripheral face of shaft vibration probe 4 like this, and compressed gas can outwards blow off through the clearance between 2 bottom edges of metal casing and the axle bush 1 outer peripheral face, still can cool off the axle bush 1 outer peripheral face simultaneously. Meanwhile, the compressed gas can flow out through a plurality of vent holes 21 arranged on the side wall of the metal cover 2 so as to reduce the internal temperature of the metal cover 2 and correspondingly rapidly exchange heat with the shaft vibration probe 4.
Example 2
Referring to fig. 2, the bottom edge of the metal cover 2 of the present embodiment is connected to the outer peripheral surface of the bearing bush 1, and the top end of the metal cover 2 is provided with an exhaust port 22, the compressed air metal tube 3 passes through the bottom of the metal cover 2 and extends into the metal cover 2, and the exhaust port of the compressed air metal tube 3 is aligned with the outer peripheral surface of the shaft vibration probe 4. Preferably, the inner wall surface of the metal cover 2 of the present embodiment has a structure with two wide ends and a narrow middle part.
The compressed air of the embodiment enters the metal cover 2 from the lower part of the metal cover 2, and the gas is pushed from the lower part to the upper part, so that the surface of the shaft vibration probe 4 can be cooled. The inner peripheral surface of the metal cover 2 of the embodiment is of a structure with two wide ends and a narrow middle part, so that compressed air can flow outwards quickly along the inner wall surface of the metal cover 2, and the heat exchange efficiency between the compressed air and the shaft vibration probe 4 is improved.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (6)
1. The overtemperature-preventing shaft vibration measuring device is characterized by comprising a shaft vibration probe, the end part of the shaft vibration probe is abutted to the outer peripheral surface of a bearing bush, a metal cover is sleeved outside the shaft vibration probe, the outer peripheral surface of the metal cover is communicated with an air outlet end of a compressed air metal pipe, and compressed air enters the metal cover through the compressed air metal pipe to exchange heat with the shaft vibration probe so as to reduce the working temperature of the shaft vibration probe.
2. The overheat-proof shaft vibration measuring apparatus as set forth in claim 1, wherein a portion of a bottom edge of the metal shell is connected to an outer peripheral surface of the bearing shell, a gap is provided between the bottom edge of the metal shell and the outer peripheral surface of the bearing shell, and an air outlet end of the compressed air metal tube penetrates through a top wall surface of the metal shell and extends into the metal shell.
3. The over-temperature prevention axial vibration measuring device as claimed in claim 2, wherein the compressed air metal tube has an air outlet facing the surface of the axial vibration probe and delivering air from top to bottom.
4. The over-temperature prevention shaft vibration measuring device according to claim 3, wherein the metal cover is a horn-shaped structure gradually expanding from the top to the bottom, and a plurality of vent holes are formed in the side wall of the metal cover.
5. The overheat prevention shaft vibration measuring apparatus as set forth in claim 1, wherein the bottom edge of said metal cover is connected to the outer peripheral surface of the bush, the top end of the metal cover is provided with an exhaust port, said compressed air metal tube is inserted into the metal cover through the bottom of the metal cover, and the exhaust port of the compressed air metal tube is aligned with the outer peripheral surface of the shaft vibration probe.
6. The over-temperature prevention shaft vibration measuring device according to claim 5, wherein the inner wall surface of the metal cover has a structure with two wide ends and a narrow middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558789.0U CN210068248U (en) | 2019-04-23 | 2019-04-23 | Over-temperature-prevention shaft vibration measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558789.0U CN210068248U (en) | 2019-04-23 | 2019-04-23 | Over-temperature-prevention shaft vibration measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068248U true CN210068248U (en) | 2020-02-14 |
Family
ID=69438290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920558789.0U Active CN210068248U (en) | 2019-04-23 | 2019-04-23 | Over-temperature-prevention shaft vibration measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068248U (en) |
-
2019
- 2019-04-23 CN CN201920558789.0U patent/CN210068248U/en active Active
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