CN220444828U - Pipeline expansion device for overhauling steam turbine - Google Patents

Abstract

The utility model provides a pipeline expansion device for overhauling a steam turbine, which comprises the following components: a stent and an expansion assembly, the stent comprising a conduit mounting zone for mounting a conduit; the expansion assembly comprises a supporting piece and a pipeline expansion piece, the lower end of the supporting piece is connected with the support, the pipeline expansion piece comprises a pipeline connecting portion and a connecting rod, one end of the connecting rod is connected with the pipeline connecting portion, the other end of the connecting rod penetrates through the supporting piece, the connecting rod is movable in the direction close to the pipeline installation area and away from the pipeline installation area, and the outer surface of a part of the pipeline connecting portion is matched with the outer surface of a pipeline. The pipeline expansion device for overhauling the steam turbine has the advantages of stable operation and low manufacturing cost.

Description

Pipeline expansion device for overhauling steam turbine

Technical Field

The utility model relates to the technical field of turbine detection equipment, in particular to a pipeline expansion device for turbine maintenance.

Background

Steam turbines are the primary power generation equipment of thermal power plants and are also commonly used in metallurgical industry, chemical industry, and ship power plants. In the use process of the steam turbine, the pipeline connected with the steam turbine needs to be detected regularly, and the pipeline is troublesome in detection due to the fixed radial size. In the related art, a pipeline connected with a steam turbine is expanded through a pipeline expansion device for overhauling the steam turbine so as to be convenient for detection personnel to detect. However, the expansion mode of the pipe expansion device for maintenance of the steam turbine in the related art is complex as a whole, has high cost, and is easy to have fault conditions when in operation, thereby causing inconvenient use, and the use process is not stable enough, so that the maintenance work of the steam turbine is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the utility model provides the pipeline expansion device for the overhaul of the steam turbine, which has the advantages of stable operation and low manufacturing cost.

The pipeline expansion device for overhauling the steam turbine comprises the following components: the support comprises a pipeline installation area, wherein the pipeline installation area is used for installing a pipeline; the expansion assembly comprises a supporting piece and a pipeline expansion piece, wherein the lower end of the supporting piece is connected with the support, the pipeline expansion piece comprises a pipeline connecting portion and a connecting rod, one end of the connecting rod is connected with the pipeline connecting portion, the other end of the connecting rod penetrates through the supporting piece, the connecting rod is movable in the direction close to the pipeline installation area and away from the pipeline installation area, and the outer surface of a part of the pipeline connecting portion is matched with the outer surface of a pipeline.

The pipeline expansion device for overhauling the steam turbine can be used for arranging the pipeline on the pipeline installation area and connecting the pipeline connecting part with the outer surface of the pipeline. The connecting rod is driven to move in the direction away from the pipeline installation area, and the connecting rod drives the pipeline connecting part to move in the direction away from the pipeline installation area, so that the pipeline is expanded. Therefore, the expansion process of the pipeline expansion device for the overhaul of the steam turbine is simple, and the operation is stable, so that the pipeline expansion device is not easy to fail in the expansion process of the pipeline, and the processing and manufacturing cost is low.

Therefore, the pipeline expansion device for overhauling the steam turbine has the advantages of stable operation and low manufacturing cost.

In some embodiments, the support member includes a first through hole, the connecting rod is movably disposed through the first through hole along a first direction, and an included angle between the first direction and the up-down direction is 40 ° -60 °.

In some embodiments, the support member includes a first section and a second section opposite in an up-down direction, the first section is located below the second section, the first section is connected with the second section, the second section is connected with the bracket, the first section is obliquely arranged relative to the second section, and an extending direction of the first section is consistent with a second direction, the first through hole is formed in the first section, and the second direction is perpendicular to the first direction.

In some embodiments, the expansion assembly further comprises: the guide rods are multiple, the guide rods are spaced apart in the circumferential direction of the connecting rod, the first section is further provided with a plurality of second through holes, the second through holes are spaced apart in the circumferential direction of the first through holes, one end of each guide rod is connected with the pipeline connecting portion, the other end of each guide rod is inserted in the second through holes in a one-to-one correspondence mode, each guide rod is movable in the second direction, and the extending direction of each guide rod is consistent with the first direction.

In some embodiments, the outer circumferential surface of the connecting rod is provided with external threads, and the inner wall surface of the first through hole is provided with internal threads matched with the external threads.

In some embodiments, the conduit connection includes a first contact plane and a second contact plane, the first contact plane being proximate to the conduit mounting area in a first horizontal direction relative to the second contact plane, the first contact plane being above the second contact plane, the first contact plane and the second contact plane being perpendicular to each other such that the first contact plane and the second contact plane mate with the conduit.

In some embodiments, the expansion assembly further comprises: the first electromagnet and the second electromagnet are arranged on the first contact plane, the first electromagnet is arranged in the first installation groove, the second installation groove is arranged on the second contact plane, and the second electromagnet is arranged in the second installation groove so that the first electromagnet and the second electromagnet adsorb the pipeline.

In some embodiments, the stent further comprises: the two first limiting pieces comprise a first clamping part and a first sliding part, the first clamping part comprises a first end part and a second end part which are opposite in the up-down direction, the extending direction of the first end part is consistent with the second horizontal direction, the first end part is connected with the first sliding part through the second end part, a first guide rail is arranged in the pipeline installation area, the extending direction of the first guide rail is consistent with the second horizontal direction, the two first limiting pieces are opposite in the second horizontal direction, and each first sliding part is movably matched with the first guide rail along the second horizontal direction; the second limiting parts are two, each second limiting part comprises a second clamping part and a second sliding part, each second clamping part comprises a third end part and a fourth end part which are opposite in the up-down direction, the extending direction of the third end part is consistent with the second horizontal direction, the third end part is connected with the second sliding parts through the fourth end part, the pipeline installation area is provided with a second guide rail, the second guide rail is opposite to the first guide rail in the first horizontal direction, the extending direction of the second guide rail is consistent with the second horizontal direction, the two second limiting parts are opposite in the second horizontal direction, each second sliding part is movably matched with the second guide rail along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

In some embodiments, the expansion assembly further comprises: and the rotating handle is connected with the other end of the connecting rod.

Drawings

Fig. 1 is a schematic structural view of a pipe expansion device for overhauling a steam turbine according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a pipe expansion device for overhauling a steam turbine according to an embodiment of the present utility model.

FIG. 3 is a schematic illustration of the structure of an expansion assembly according to an embodiment of the present utility model.

Reference numerals:

a pipe expansion device 100 for steam turbine maintenance;

a bracket 1; a pipe installation area 11;

an expansion assembly 2; a support 21; a first section 211; a first through hole 2111; a second through hole 2112; a second section 212; a pipe expander 22; a pipe connection part 221; a first contact plane 2211; a second contact plane 2212; a connecting rod 222; a guide rod 23; turning the handle 24;

a conduit 200.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A pipe expansion device 100 for steam turbine service according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, a pipe expansion device 100 for steam turbine maintenance according to an embodiment of the present utility model includes a bracket 1 and an expansion assembly 2.

The bracket 1 includes a pipe installation region 11, and the pipe installation region 11 is used for installing the pipe 200. The expansion assembly 2 comprises a supporting piece 21 and a pipeline expansion piece 22, wherein the lower end of the supporting piece 21 is connected with the bracket 1, the pipeline expansion piece 22 comprises a pipeline connecting part 221 and a connecting rod 222, one end of the connecting rod 222 is connected with the pipeline connecting part 221, and the other end of the connecting rod 222 penetrates through the supporting piece 21. And the connection rod 222 is movable in a direction approaching the pipe installation region 11 and away from the pipe installation region 11, and an outer surface of a portion of the pipe connection portion 221 is fitted with an outer surface of the pipe 200. Wherein the pipe 200 can be mounted on the pipe mounting area 11 by welding or the like; alternatively, the pipe 200 can be mounted on the pipe mounting region 11 by other means. The pipe connection portion 221 can be connected to the outer surface of the pipe 200 by welding or the like; alternatively, the conduit 200 can be coupled to the outer surface of the conduit 200 by other means.

The utility model provides a steam turbine overhauls and uses pipeline expansion device among the related art includes the shell, the internally mounted of shell has the fixed plate, and the top fixed mounting of fixed plate has the motor, one side of motor is provided with the belt, and the belt is kept away from one side interval of motor and is provided with the rolling disc, the lateral wall of rolling disc is provided with the sliding tray, and the inside evenly distributed of sliding tray has the cushion, one side of rolling disc is provided with the transfer line, and the transfer line runs through the rolling disc and extends to the inside of sliding tray, the bottom fixed mounting of transfer line has the sliding block, the circumference outer wall of shell is provided with the push pedal. The pipeline expansion device for overhauling the steam turbine in the related art drives the rotating disc to rotate through the motor, so that the cushion block and the sliding block are combined to drive the push plate to move and expand the pipeline. In addition, when the expansion operation is performed, a fault condition is easy to exist, so that the use is inconvenient, the stability in the use process is insufficient, and the maintenance work of the steam turbine is influenced.

The pipe expansion device 100 for steam turbine maintenance according to the embodiment of the present utility model can install the pipe 200 on the pipe installation area 11 and then connect the pipe connection part 221 to the outer surface of the pipe 200. By driving the connection rod 222 to move in a direction away from the pipe installation area 11, the connection rod 222 drives the pipe connection part 221 to move in a direction away from the pipe installation area 11, thereby expanding the pipe 200. Therefore, the expansion process of the pipe expansion device 100 for the overhaul of the steam turbine is simple, and the operation is stable, so that the pipe expansion device is not easy to fail in the expansion process of the pipe 200, and the processing and manufacturing cost is low.

Thus, the pipe expansion device 100 for steam turbine maintenance according to the embodiment of the utility model has the advantages of stable operation and low manufacturing cost.

In order to make the present application easier to understand, the pipe expansion device 100 for steam turbine maintenance according to the embodiment of the present utility model will be further described by taking the example in which the first horizontal direction coincides with the left-right direction and the second horizontal direction coincides with the front-rear direction. The first horizontal direction is perpendicular to the second horizontal direction, and the first horizontal direction and the second horizontal direction are perpendicular to the up-down direction.

In some embodiments, as shown in fig. 1 and 2, the support 21 includes a first through hole 2111, and the connection rod 222 is movably provided through the first through hole 2111 in a first direction. Wherein the included angle between the first direction and the up-down direction is 40-60 degrees. Optionally, the angle between the first direction and the up-down direction is 45 ° -55 °. Optionally, the angle between the first direction and the up-down direction is 47 ° -52 °. Thus, during the expansion process, the moving direction of the connecting rod 222 is inclined upward, so that the expansion effect of the pipe 200 is better, and the detection personnel can detect the expansion effect.

Wherein the included angle between the first direction and the up-down direction includes, but is not limited to, 40 °, 43 °, 45 °, 47 °, 52 °, 55 °, 57 °, or 60 °.

In some embodiments, as shown in fig. 1 and 2, the support 21 includes a first section 211 and a second section 212 that are opposite in the up-down direction, the first section 211 being located below the second section 212. The first section 211 is connected with the second section 212, the second section 212 is connected with the bracket 1, the first section 211 is obliquely arranged relative to the second section 212, the extending direction of the first section 211 is consistent with the second direction, the first through hole 2111 is formed in the first section 211, and the second direction is perpendicular to the first direction. So that the connection rod 222 is facilitated to move in the first direction by the support of the support 21, and the structure is simple and easy to manufacture.

In some embodiments, as shown in fig. 3, the expansion assembly 2 further includes a plurality of guide rods 23, the plurality of guide rods 23 being spaced apart in the circumferential direction of the connecting rod 222. The first section 211 is further provided with a plurality of second through holes 2112, the second through holes 2112 are spaced apart from each other in the circumferential direction of the first through hole 2111, one end of each guide rod 23 is connected to the pipe connecting portion 221, the other end of each guide rod 23 is inserted into the second through hole 2112 in a one-to-one correspondence, and each guide rod 23 is movable in the second direction. Thus, the pipe connection portion 221 is prevented from being movable in the first direction by the guide of the guide rod 23, thereby further improving the expansion effect of the pipe expansion device 100 for steam turbine maintenance according to the embodiment of the present utility model.

In some embodiments, as shown in fig. 3, the outer circumferential surface of the connecting rod 222 is provided with external threads, and the inner wall surface of the first through hole 2111 is provided with internal threads that mate with the external threads. The internal thread on the inner wall surface of the first through hole 2111 is matched with the external thread on the guide rod 23, so that the connecting rod 222 can drive the pipeline connecting part 221 to move in the first direction through the rotation of the connecting rod 222, and the expansion of the pipeline 200 is completed, and the structure is simple and convenient to manufacture.

In some embodiments, as shown in fig. 3, the pipe connection 221 includes a first contact plane 2211 and a second contact plane 2212, the first contact plane 2211 being adjacent to the pipe installation zone 11 in a first horizontal direction with respect to the second contact plane 2212. The first contact plane 2211 is located above the second contact plane 2212, the first contact plane 2211 and the second contact plane 2212 being perpendicular to each other, so that the first contact plane 2211 and the second contact plane 2212 fit into the pipe. The first contact plane 2211 and the second contact plane 2212 are adapted to the outer surface of the pipe 200, so that the pipe 200 is stressed more uniformly during the expansion process, and the pipe 200 is prevented from being damaged.

In some embodiments, the expansion assembly 2 further includes a first electromagnet and a second electromagnet, the first contact plane 2211 is provided with a first mounting groove, the first electromagnet is disposed in the first mounting groove, the second contact plane 2212 is provided with a second mounting groove, and the second electromagnet is disposed in the second mounting groove, so that the first electromagnet and the second electromagnet attract the pipe 200. Thus, the first electromagnet arranged on the first contact plane 2211 and the second electromagnet arranged on the second contact plane 2212 are used for electromagnetic adsorption on the pipeline 200, so that connection with the pipeline 200 in a welding mode or the like is not needed, and the expansion efficiency of the pipeline 200 is higher.

In some embodiments, the bracket 1 further comprises a first stop (not shown) and a second stop (not shown). The first locating part is two, and every first locating part includes first joint portion and first sliding part, and first joint portion includes relative first tip and the second tip in upper and lower direction, and the extending direction of first tip is unanimous with the fore-and-aft direction. The first end portion is connected with the first sliding portion through the second end portion, the pipe installation area 11 is provided with first guide rails, the extending direction of the first guide rails is consistent with the front-rear direction, the two first limiting pieces are opposite in the front-rear direction, and each first sliding portion is movably matched with the first guide rail along the front-rear direction. The second locating part is two, and every second locating part includes second joint portion and second sliding part, and second joint portion includes relative third tip and fourth tip in the upper and lower direction, and the extending direction of third tip is unanimous with the fore-and-aft direction, and third tip passes through the fourth tip and links to each other with second sliding part, and pipeline installation zone 11 is equipped with the second guide rail, and second guide rail and first guide rail are relative in the left and right directions, and the extending direction of second guide rail is unanimous with the fore-and-aft direction. The two second limiting pieces are opposite in the front-rear direction, and each second sliding part is movably matched with the second guide rail along the front-rear direction.

In other words, when the pipe 200 is placed on the pipe installation area 11, the first end portion of the first stopper located at the front end of the pipe 200 is moved to be in contact with the inner wall surface of the front end portion of the pipe 200, the second end portion of the first stopper is in contact with the front end surface of the pipe 200, the first end portion of the first stopper located at the rear end of the pipe 200 is in contact with the inner wall surface of the rear end portion of the pipe 200, and the second end portion of the first stopper is in contact with the rear end surface of the pipe 200. The first end of the second stopper at the front end of the pipe 200 contacts the inner wall surface of the front end of the pipe 200, the second end of the second stopper contacts the front end surface of the pipe 200, the first end of the second stopper at the rear end of the pipe 200 contacts the inner wall surface of the rear end of the pipe 200, and the second end of the second stopper contacts the rear end surface of the pipe 200. Thereby make with pipeline 200 joint between two first locating parts and two second locating parts, not only use convenient and simple structure.

In some embodiments, as shown in fig. 1 and 2, the expansion assembly 2 further includes a turning handle 24, the turning handle 24 being connected to the other end of the connecting rod 222. Thereby facilitating the inspector to hold the rotating handle 24 to rotate the connecting rod 222, thereby improving the pipe expanding device 100 for steam turbine maintenance according to the embodiment of the present utility model.

In the description of the present utility model, it should 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", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (9)

1. A pipe expansion device for steam turbine service, comprising:

the support comprises a pipeline installation area, wherein the pipeline installation area is used for installing a pipeline;

the expansion assembly comprises a supporting piece and a pipeline expansion piece, wherein the lower end of the supporting piece is connected with the support, the pipeline expansion piece comprises a pipeline connecting portion and a connecting rod, one end of the connecting rod is connected with the pipeline connecting portion, the other end of the connecting rod penetrates through the supporting piece, the connecting rod is movable in the direction close to the pipeline installation area and away from the pipeline installation area, and the outer surface of a part of the pipeline connecting portion is matched with the outer surface of a pipeline.

2. The pipe expansion device for steam turbine maintenance according to claim 1, wherein the support member includes a first through hole, the connecting rod is movably provided through the first through hole in a first direction, and an angle between the first direction and an up-down direction is 40 ° -60 °.

3. The pipe expansion device for steam turbine maintenance according to claim 2, wherein the support member comprises a first section and a second section which are opposite to each other in the vertical direction, the first section is located below the second section, the first section is connected to the second section, the second section is connected to the bracket, the first section is disposed obliquely with respect to the second section, the extending direction of the first section is identical to the second direction, the first through hole is formed in the first section, and the second direction is perpendicular to the first direction.

4. A steam turbine service pipe expander apparatus as defined in claim 3, wherein the expander assembly further comprises: the guide rods are multiple, the guide rods are spaced apart in the circumferential direction of the connecting rod, the first section is further provided with a plurality of second through holes, the second through holes are spaced apart in the circumferential direction of the first through holes, one end of each guide rod is connected with the pipeline connecting portion, the other end of each guide rod is inserted in the second through holes in a one-to-one correspondence mode, each guide rod is movable in the second direction, and the extending direction of each guide rod is consistent with the first direction.

5. The pipe expander for maintenance of steam turbines according to claim 2, wherein the outer circumferential surface of the connecting rod is provided with external threads, and the inner wall surface of the first through hole is provided with internal threads which are matched with the external threads.

6. The steam turbine service duct work expansion apparatus of claim 1, wherein the duct work connection includes a first contact plane and a second contact plane, the first contact plane being adjacent to the duct work installation area in a first horizontal direction relative to the second contact plane, the first contact plane being above the second contact plane, the first contact plane and the second contact plane being perpendicular to each other such that the first contact plane and the second contact plane are mated with a duct.

7. The steam turbine service pipe expander apparatus of claim 6, wherein the expander assembly further comprises: the first electromagnet and the second electromagnet are arranged on the first contact plane, the first electromagnet is arranged in the first installation groove, the second installation groove is arranged on the second contact plane, and the second electromagnet is arranged in the second installation groove so that the first electromagnet and the second electromagnet adsorb the pipeline.

8. The steam turbine service duct work expansion device of claim 6, wherein the bracket further comprises: the two first limiting pieces comprise a first clamping part and a first sliding part, the first clamping part comprises a first end part and a second end part which are opposite in the up-down direction, the extending direction of the first end part is consistent with the second horizontal direction, the first end part is connected with the first sliding part through the second end part, a first guide rail is arranged in the pipeline installation area, the extending direction of the first guide rail is consistent with the second horizontal direction, the two first limiting pieces are opposite in the second horizontal direction, and each first sliding part is movably matched with the first guide rail along the second horizontal direction;

the second limiting parts are two, each second limiting part comprises a second clamping part and a second sliding part, each second clamping part comprises a third end part and a fourth end part which are opposite in the up-down direction, the extending direction of the third end part is consistent with the second horizontal direction, the third end part is connected with the second sliding parts through the fourth end part, the pipeline installation area is provided with a second guide rail, the second guide rail is opposite to the first guide rail in the first horizontal direction, the extending direction of the second guide rail is consistent with the second horizontal direction, the two second limiting parts are opposite in the second horizontal direction, each second sliding part is movably matched with the second guide rail along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

9. The steam turbine service pipe expander apparatus of claim 5, wherein the expander assembly further comprises: and the rotating handle is connected with the other end of the connecting rod.