CN215213621U - Steam turbine TSI measuring probe cooling device - Google Patents

Abstract

The utility model provides a steam turbine TSI measuring probe cooling device, including the cover that flow equalizes, the top of the cover that flow equalizes communicates to the cold air source through the pipeline, the welding of the middle part has the flow equalizing board in the cover that flow equalizes, the flow equalizing board will flow equalize and cover and separate into upper strata, lower floor, the array equipartition has a plurality of flow equalizes on the flow equalizing board. The utility model relates to a rationally, let all TSI probes work in the cold wind cover that the cover that flow equalizes blows off, reduce ambient temperature on every side, ensure unit safe and reliable operation, extension TSI probe life prevents that steam turbine TSI probe trouble from leading to the unit non-to stop.

Description

Steam turbine TSI measuring probe cooling device

Technical Field

The utility model relates to a steam turbine TSI measuring probe cooling device.

Background

The TSI probe of the steam turbine of the thermal power plant is influenced by the material, the particularity of the operating condition and the like, each probe has corresponding working environment temperature requirements, the problem of shaft seal air leakage cannot be thoroughly solved, the probe and the signal aging degree are directly accelerated when the probe is in a high-temperature environment for a long time, the problem is common in the current domestic Shanghai steam turbine # 2W, a few domestic power plants adopt special heat-insulating and high-temperature-preventing metal baffles to isolate the # 2W shaft seal air leakage, the investment cost is high, and the potential risk that the metal baffles touch a steam turbine rotating shaft due to sliding in the process of maintenance and unit operation is not facilitated; in addition, a few power plants are additionally provided with compressed air blowing at the outer ring of the #2 watt position, but the blowing effect is poor and the appearance is not attractive.

Disclosure of Invention

In view of this, the invention aims to provide a cooling device for a turbine TSI measurement probe, which prolongs the service life of the TSI probe and prevents a turbine TSI probe from failing to stop a unit.

The invention is realized by adopting the following scheme: the utility model provides a steam turbine TSI measuring probe cooling device, includes the cover that flow equalizes, the top of flow equalizes the cover and communicates to cold gas source through the pipeline, the middle part welding has the flow equalizing board in the cover that flow equalizes, the flow equalizing board will equalize the cover and separate into upper strata, lower floor, the upper array equipartition of flow equalizing board has a plurality of flow equalizing holes.

Further, the top of upper strata is provided with the air inlet, the air inlet is connected with outside cold air source through the pipeline that has the stop valve.

Furthermore, a filtering pressure reducing valve is arranged on a pipeline connecting the air inlet and an external cold air source.

Further, the cover that flow equalizes is the box, and the box includes preceding curb plate, posterior lateral plate, left side board, right side board, and adjacent curb plate corresponds welded fastening between the side, and the top of box is passed through the roof and is sealed, and the roof edge welds each other with the curb plate top that corresponds the side respectively, and the bottom of box is not sealed, and the flange reason that flow equalizes welds and separates into upper strata, lower floor with the box in the box.

Furthermore, the bilateral symmetry of lower floor is provided with the groove of stepping down, the groove of stepping down is the rectangle.

Further, the middle part of roof sets up the air inlet, and the air inlet passes through connection structure and outside tube coupling, connection structure includes fixed joint, cooperation joint, the fixed joint spiro union is on the air inlet, cooperation structure rotates to be connected on the pipeline output.

Further, fixed joint includes first sleeve, and first sleeve outer wall middle part is provided with the card shoulder, and the card shoulder separates into upper sleeve, lower sleeve with first sleeve, and lower sleeve suit is on the air inlet, and the card shoulder spiral shell is fixed on the roof, is provided with the external screw thread on the upper sleeve periphery.

Furthermore, the matching joint comprises a second sleeve, an inner thread matched with the upper sleeve is arranged on the inner wall of the second sleeve, an inner shoulder is arranged at one end of the second sleeve, an annular plate is arranged on the periphery of the output end of the pipeline and abuts against the inner shoulder, the output end of the pipeline is sleeved on a cover plate, a containing groove used for containing the annular plate is formed in the side, facing the annular plate, of the cover plate, and the cover plate is screwed on the inner shoulder to limit the annular plate between the cover plate and the inner shoulder.

Compared with the prior art, the invention has the following beneficial effects: reasonable in design lets all TSI probes work in the cool air cover that the cover that flow equalizes blows out, reduces ambient temperature on every side, ensures the unit safe and reliable operation, extension TSI probe life prevents that turbine TSI probe trouble from leading to the unit non-to stop. Whole device adopts detachable fixed mode, and the unit of being convenient for overhauls.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention;

fig. 2 is a side cross-sectional view of an embodiment of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1.

Detailed Description

The invention is further explained below with reference to the drawings and the embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1-3, this embodiment provides a turbine TSI measuring probe cooling device, including flow equalizing cover 1, the top of flow equalizing cover communicates to the cold air source through the pipeline, flow equalizing plate 2 is welded in the middle part of flow equalizing cover, flow equalizing plate separates flow equalizing cover into upper 3, lower floor 4, a plurality of flow equalizing holes 5 have been evenly distributed on the flow equalizing plate, in this embodiment, the height of upper strata is 60mm, the height of lower floor is 80mm, holistic length is 300mm, whole width is 60mm, the diameter of water conservancy diversion hole is 7mm, compressed air transmits the upper strata through the pipeline, flows into the lower floor through water conservancy diversion hole uniform velocity, forms "fan housing" around TSI probe measuring device, lets the TSI probe keep low temperature work in the cooling fan housing.

In this embodiment, the top of the upper layer is provided with an air inlet 6, which is connected to an external source of cold air via a line with a shut-off valve (not shown) through which the admission of compressed cold air is controlled.

In this embodiment, a filter pressure reducing valve (not shown) is installed on a pipeline connecting the air inlet and the external cold air source, and compressed air firstly passes through the filter pressure reducing valve so as to prevent impurities such as water, oil gas and the like from being attached to the measuring surface of the probe.

In this embodiment, the cover that flow equalizes is the box, and the box includes preceding curb plate 7, posterior lateral plate 8, left side board 9, right side board 10, and welded fastening between the adjacent curb plate corresponds the side, and the top of box is passed through roof 11 and is sealed, and the roof edge welds each other with the curb plate top that corresponds the side respectively, and the bottom of box is not sealed, and the flange reason that flow equalizes welds and separates into upper strata, lower floor with the box in the box.

In this embodiment, in order to make things convenient for the fixed of the cover that flow equalizes, the bilateral symmetry of lower floor is provided with the groove of stepping down 12, the groove of stepping down is the rectangle, and the groove height of stepping down is 60mm, and the width is 20mm, but the groove joint of stepping down is on other structures.

In this embodiment, for the high-speed joint, the middle part of roof sets up the air inlet, and the air inlet passes through connection structure and outside tube coupling, connection structure includes fixed joint 13, cooperation joint 14, the fixed joint spiro union is on the air inlet, cooperation structure rotates to be connected on the pipeline output.

In this embodiment, fixed joint includes first sleeve, and first sleeve outer wall middle part is provided with card shoulder 15, and the card shoulder separates into upper sleeve 16, lower sleeve 17 with first sleeve, and lower sleeve suit is on the air inlet, and the card shoulder spiral shell is fixed on the roof, is provided with the external screw thread on the upper sleeve periphery.

In this embodiment, the fitting joint includes a second sleeve 18, an inner thread matched with the upper sleeve is provided on an inner wall of the second sleeve, the second sleeve and the upper sleeve can be fast screwed, an inner shoulder 19 is provided at one end of the second sleeve, an annular plate 20 is provided on an outer periphery of an output end of the pipeline, the annular plate abuts against the inner shoulder, a cover plate 21 is sleeved on the output end of the pipeline, a receiving groove for receiving the annular plate is provided on a side of the cover plate facing the annular plate, and the cover plate is screwed on the inner shoulder to limit the annular plate between the cover plate and the inner shoulder.

Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.

The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, the orientation or positional relationship indicated in any of the above-mentioned technical solutions of the present disclosure for indicating positional relationship, such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of describing the present disclosure, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present disclosure, and the term used for indicating shape applied in any of the above-mentioned technical solutions of the present disclosure includes a shape similar, analogous or approximate thereto unless otherwise stated.

The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (8)

1. The utility model provides a steam turbine TSI measuring probe cooling device, includes the cover that flow equalizes, its characterized in that, the top of the cover that flow equalizes communicates to cold air source through the pipeline, the welding of the middle part has the flow equalizer in the cover that flow equalizes, the flow equalizer separates the cover that flow equalizes into upper strata, lower floor, the array equipartition has a plurality of flow equalizing holes on the flow equalizer.

2. The turbine TSI measurement probe cooling arrangement as claimed in claim 1, wherein an air inlet is provided at a top portion of the upper deck, the air inlet being connected to an external source of cooling air via a line with a shut-off valve.

3. The turbine TSI measurement probe cooling arrangement as recited in claim 2, wherein a filter and pressure relief valve is disposed in a conduit connecting said inlet port to an external source of cooling air.

4. The turbine TSI measuring probe cooling device of claim 2, wherein the flow equalizing cover is a box body, the box body comprises a front side plate, a rear side plate, a left side plate and a right side plate, corresponding sides of adjacent side plates are welded and fixed, the top of the box body is sealed by a top plate, edges of the top plate are welded with the tops of the side plates of the corresponding sides respectively, the bottom of the box body is not sealed, and edges of the flow equalizing plates are welded in the box body to separate the box body into an upper layer and a lower layer.

5. The turbine TSI measurement probe cooling device of claim 4, wherein the lower layer is symmetrically provided with abdicating grooves at two sides, and the abdicating grooves are rectangular.

6. The turbine TSI measurement probe cooling device of claim 4, wherein an air inlet is disposed in a middle portion of the top plate, the air inlet is connected to an external pipeline through a connection structure, the connection structure includes a fixed joint and a fitting joint, the fixed joint is screwed to the air inlet, and the fitting joint is rotatably connected to an output end of the pipeline.

7. The turbine TSI measurement probe cooling device of claim 6, wherein the fixed joint comprises a first sleeve, a clamping shoulder is arranged in the middle of the outer wall of the first sleeve, the clamping shoulder divides the first sleeve into an upper sleeve and a lower sleeve, the lower sleeve is sleeved on the air inlet, the clamping shoulder is screwed on the top plate, and external threads are arranged on the periphery of the upper sleeve.

8. The turbine TSI measurement probe cooling device of claim 7, wherein the mating connector comprises a second sleeve, an internal thread is formed on an inner wall of the second sleeve and is configured to mate with the upper sleeve, an internal shoulder is formed at one end of the second sleeve, an annular plate is formed on an outer periphery of the output end of the pipeline and abuts against the internal shoulder, a cover plate is sleeved on the output end of the pipeline, a receiving groove is formed in a side of the cover plate facing the annular plate, and the cover plate is screwed on the internal shoulder to limit the annular plate between the cover plate and the internal shoulder.

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