Steam turbine rotor temperature measuring device

Abstract

The invention discloses a steam turbine rotor temperature measuring device in the technical field of steam turbines, and the device comprises an installation unit which comprises a fixed part disposed on a working cabin of a steam turbine, a sliding part disposed at one end of the fixed part in the vertical direction, and a bidirectional screw rod disposed at the other end of the fixed part in the vertical direction. The first driven component is arranged above one side of the fixed component, the two-way lead screw penetrates through the first driven component, the second driven component is arranged above the other side of the fixed component, and the sliding component penetrates through the second driven component; and the driving unit comprises a motor group arranged above the fixed part. According to the invention, temperature measurement work can be carried out on multiple positions of the steam turbine rotor, the accuracy of the temperature measurement work is guaranteed, the measurement range can be changed by changing the height position of the temperature measurement unit, more use requirements are met, and the use flexibility of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbines, and in particular to a temperature measuring device for a steam turbine rotor. Background Art

[0002] When the steam turbine is in use, the temperature distribution of the cylinder and the rotor itself is uneven. The surface temperature washed by steam is high, and the temperature inside the metal is low. The surface temperature of the high and medium pressure rotor steam inlet parts is high, and the center temperature is low. Due to the drastic temperature changes, the large size of the components and the different working conditions, there must be a temperature gradient in the components along the radius of the rotor, with the temperature gradually increasing from the inside to the outside. The temperature gradient causes different parts of the metal to expand differently and produce mechanical stress (thermal stress). When the temperature of the rotor surface and the inside is uniform, this stress disappears.

[0003] Therefore, during the startup of the steam turbine, the thermal stress of the steam turbine must be controlled so that it does not exceed the allowable value, and at the same time, the unit must expand evenly as required. Therefore, it is necessary to grasp the temperature of the steam turbine rotor in real time, so that corresponding adjustments can be made for uneven temperatures. However, the device for measuring the temperature of the steam turbine rotor in the prior art has a fixed measurement range and is unable to perform temperature detection at multiple positions on the steam turbine rotor, resulting in inaccurate temperature measurement. Summary of the invention

[0004] In view of the above problems existing in the existing steam turbine rotor temperature measuring device, the present invention is proposed.

[0005] Therefore, the present invention provides a steam turbine rotor temperature measurement device, the purpose of which is to provide a measure for performing multi-position temperature measurement on the steam turbine rotor to ensure the accuracy of temperature measurement.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a steam turbine rotor temperature measuring device, comprising: an installation unit, comprising a fixed component arranged on a steam turbine working cabin, a sliding component arranged at one end of the fixed component in a vertical direction, a bidirectional screw rod arranged at the other end of the fixed component in a vertical direction, a first driven component arranged above one side of the fixed component and through which the bidirectional screw rod passes, and a second driven component arranged above the other side of the fixed component and through which the sliding component passes; a driving unit, comprising a motor group disposed above the fixing member, and a first driving member and a second driving member disposed on both sides of the motor group, respectively, wherein the first driving member and the second driving member are respectively engaged with the first driven member and the second driven member; and, A temperature measuring unit, wherein the temperature measuring unit includes a limiting component located below the fixed component, and the two ends of the limiting component are respectively connected to the ends of the sliding component and the bidirectional screw rod, a first pushing component arranged at one end of the limiting component close to the sliding component, a second pushing component arranged at one end of the limiting component close to the bidirectional screw rod, and a temperature measuring component arranged between the first pushing component and the second pushing component, and the lower limit sliding connection of the temperature measuring component is on the limiting component.

[0007] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the fixing component includes a fixing plate located on the turbine working cabin, two groups of fixing ears symmetrically arranged above the fixing plate, and the two ends of the motor group respectively penetrate the two groups of fixing ears, and two groups of limiting frames symmetrically arranged above the two ends of the fixing plate in a C-shaped structure, and the first driven component and the second driven component are respectively connected to the two ends of the fixing plate via the two groups of limiting frames.

[0008] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the sliding component includes a sliding rod vertically arranged at one end of the fixed plate, and the sliding rod passes through the limit frame, the second driven component and the fixed plate from top to bottom in sequence, a first bevel gear arranged at the lower end of the sliding rod, and a sliding groove opened on the sliding rod.

[0009] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the second driven component includes a conical block sleeved on the sliding component, a plurality of groups of meshing teeth arranged on the lower outer side of the conical block, and the second driven component is meshed with the second driving component through the meshing teeth, and a limit block is arranged at the center position of the conical block, and the limit block is slidably connected in the slide groove.

[0010] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the second driven component has the same overall structure as the first driven component, except that a limit block matching the slide groove is provided in the conical block, and the second driven component is slidably connected to the sliding component through the limit block, and a thread groove matching the bidirectional screw rod is provided inside the first driven component, and the first driven component is threadedly connected to the bidirectional screw rod through the thread groove.

[0011] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the first driving component includes a driving wheel fixedly connected to one end of the motor group, a plurality of storage grooves distributed in an annular position inside the driving wheel, a support spring arranged in the storage groove, and a shift block arranged at the outer end of the support spring and extending outward to the outside of the driving wheel.

[0012] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the limiting component includes two groups of symmetrically arranged limiting components, and the two groups of limiting components are respectively rotationally connected and fixedly connected to the sliding rod and the bidirectional screw rod, and an arc frame is arranged between the two groups of the limiting components, and the lower limiting sliding connection of the temperature measuring component is connected to the arc frame.

[0013] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the first pushing component includes a first rotating shaft rotatably connected to the limit assembly, and both ends of the first rotating shaft extend to both sides of the limit assembly, a second bevel gear is arranged at the outer end of the first rotating shaft, and the second bevel gear is meshed with the first bevel gear, a first inclined plate is arranged at the inner end of the first rotating shaft, and a first connecting shaft is arranged on the inner side of the first inclined plate, and the first connecting shaft extends into the temperature measuring component and is rotatably connected to the temperature measuring component.

[0014] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the second pushing component includes a second rotating shaft rotatably connected to another group of the limiting components, and both ends of the second rotating shaft extend to both sides of the limiting components, a limiting plate is arranged at the outer end of the second rotating shaft, a second inclined plate is arranged at the inner end of the second rotating shaft, and a second connecting shaft is arranged on the inner side of the second inclined plate, the second connecting shaft extends into the temperature measuring component and is rotatably connected to the temperature measuring component.

[0015] As a preferred solution of the turbine rotor temperature measuring device described in the present invention, the temperature measuring component includes a connecting disk of a disc-shaped structure located between the first pushing component and the second pushing component, two groups of connecting cone blocks arranged at the center position of the circle on both sides of the connecting disk, and the first connecting shaft and the second connecting shaft both extend into the connecting disk and are rotatably connected, a rotating shaft is arranged below the connecting disk, a temperature detector rotatably connected below the rotating shaft, and limit hooks symmetrically arranged on both sides of the temperature detector.

[0016] The beneficial effects of the present invention are as follows: the temperature can be measured at multiple positions of the turbine rotor to ensure the accuracy of the temperature measurement; at the same time, by changing the height position of the temperature measuring unit, its measurement range can be changed, thereby meeting more usage requirements and increasing the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic structural diagram of the steam turbine rotor temperature measuring device of the present invention in the installed state.

[0019] Figure 2 It is a schematic diagram of the overall structure of the steam turbine rotor temperature measuring device of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the second driven component of the steam turbine rotor temperature measuring device of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the first driving component and the second driving component of the steam turbine rotor temperature measuring device of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the temperature measuring unit of the steam turbine rotor temperature measuring device of the present invention.

[0023] Figure 6 It is a top view of the structure of the temperature measuring unit of the steam turbine rotor temperature measuring device of the present invention.

[0024] Figure 7 It is a schematic structural diagram of the first pushing component and the second pushing component of the steam turbine rotor temperature measuring device of the present invention.

[0025] Figure 8 It is a schematic structural diagram of the temperature measuring component of the steam turbine rotor temperature measuring device of the present invention.

[0026] Figure numbers: 100, mounting unit; 101, fixing component; 101a, fixing plate; 101b, fixing ear; 101c, limiting frame; 102, sliding component; 102a, sliding rod; 102c, sliding groove; 103, bidirectional screw; 104, first driven component; 105, second driven component; 105a, tapered block; 105b, meshing teeth; 105c, limiting block; 200, driving unit; 201, motor group; 202, first driving component; 202a, driving wheel; 202b, storage groove; 202c, supporting spring; 202d, shifting block; 202d-1, right-angle side; 202d-2, arc side; 203, second driving component; 300, temperature measuring unit; 301 , limiting component; 301a, limiting assembly 301a-1, limiting block; 301a-2, first limiting ear; 301a-3, second limiting ear; 301b, arc frame; 302, first pushing component; 302a, first rotating shaft; 302b, second bevel gear; 302c, first inclined plate; 302d, first connecting shaft; 303, second pushing component; 303a, second rotating shaft; 303b, limiting plate; 303c, second inclined plate; 303d, second connecting shaft; 304, temperature measuring component; 304a, connecting disk; 304b, cone block; 304c, rotating shaft; 304d, temperature measuring device; 304e, limiting hook; X, axis; O, center axis point; S, clockwise; N, counterclockwise. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1 Reference Figure 1~Figure 2 , which is a first embodiment of the present invention, provides a turbine rotor temperature measuring device, the device includes an installation unit 100, including a fixed component 101 arranged on a working cabin of the steam turbine, a sliding component 102 arranged at one end of the fixed component 101 in a vertical direction, a bidirectional screw rod 103 arranged at the other end of the fixed component 101 in a vertical direction, a first driven component 104 arranged above one side of the fixed component 101 and through which the bidirectional screw rod 103 passes, and a second driven component 105 arranged above the other side of the fixed component 101 and through which the sliding component 102 passes; the sliding component 102 is arranged in parallel with the bidirectional screw rod 103 and is in a sliding connection relationship with the fixed component 101, the first driven component 104 is in a threaded connection relationship with the bidirectional screw rod 103, the second driven component 105 is in a sliding connection with the sliding component 102, and the first driven component 104 and the second driven component 105 are limited at both ends of the fixed component 101 and can rotate in a circumferential direction at both ends of the fixed component 101.

[0032] The driving unit 200 includes a motor group 201 disposed above the fixed component 101, and a first driving component 202 and a second driving component 203 disposed on both sides of the motor group 201, and the first driving component 202 and the second driving component 203 are respectively engaged with the first driven component 104 and the second driven component 105; the motor group 201 is fixedly connected to the top of the fixed component 101, and the second driving component 203 and the first driving component 202 are fixedly connected to both sides of the motor group 201, the first driving component 202 and the second driving component 203 have the same structure, but are disposed in opposite directions, and the motor group 201 is composed of two symmetrically disposed motors, and the two motors respectively drive the first driving component 202 and the second driving component 203 to move, and, The temperature measuring unit 300 includes a limiting component 301 located below the fixed component 101, and the two ends of the limiting component 301 are respectively connected to the ends of the sliding component 102 and the bidirectional screw rod 103, a first pushing component 302 is arranged at one end of the limiting component 301 close to the sliding component 102, a second pushing component 303 is arranged at one end of the limiting component 301 close to the bidirectional screw rod 103, and a temperature measuring component 304 is arranged between the first pushing component 302 and the second pushing component 303, and the lower limit sliding connection of the temperature measuring component 304 is on the limiting component 301, the first pushing component 302 and the second pushing component 303 are respectively rotatably connected to the upper sides of the limiting component 301, the temperature measuring component 304 is rotatably connected between the first pushing component 302 and the second pushing component 303, and the lower part of the temperature measuring component 304 is limited by the limiting component 301 and can only move within the allowable range of the limiting component 301.

[0033] During use, the fixed component 101 of the device is fixedly installed at the center position above the turbine working cabin, so that the driving unit 200 is located above the turbine working cabin as a whole, and the temperature measuring unit 300 is located inside the cabin as a whole, and the temperature measuring component 304 is located directly above the turbine rotor. The motor group 201 is started, and the motor group 201 drives the second driving component 203 to rotate through one of the motors. The rotating second driving component 203 drives the sliding component 102 to rotate. The sliding component 102 can drive the first pushing component 302 to rotate by engaging with the first pushing component 302. The rotating first pushing component 302 drives the second pushing component 303 to rotate together through the temperature measuring component 304. The rotating temperature measuring component 304 will swing horizontally above the turbine rotor, thereby performing multi-directional temperature measurement on the turbine rotor below.

[0034] Example 2 Reference Figure 5~Figure 8 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that the length of the rotor is used as the diameter, and the axis is selected at its center point on the top to perform a horizontal circular scan, and the range covered by the scan is all measurement points, thereby realizing multi-position temperature measurement of the turbine rotor.

[0035] Compared with Example 1, further, the limiting component 301 includes two groups of symmetrically arranged limiting components 301a, and the two groups of limiting components 301a are respectively rotatably connected and fixedly connected to the sliding rod 102a and the bidirectional screw rod 103, and an arc frame 301b is arranged between the two groups of limiting components 301a, and the lower part of the temperature measuring component 304 is limitedly slidably connected to the arc frame 301b, and the arc frame 301b is composed of two groups of arc-shaped strip structures. The lower part of the temperature measuring component 304 is limitedly slid between the two groups of arc-shaped strip structures and can only slide within the limited range of the strip structure.

[0036] Furthermore, the limiting assembly 301a includes a limiting block 301a-1 fixedly connected to the outer end of the arc frame 301b, a first limiting ear 301a-2 arranged on the outside of the limiting block 301a-1, and a second limiting ear 301a-3 arranged on the top of the limiting block 301a-1 in the vertical direction. The ends of the sliding rod 102a and the bidirectional screw rod 103 are both connected to the first limiting ear 301a-2. The difference is that the sliding rod 102a is fixedly connected to the first limiting ear 301a-2, while the bidirectional screw rod 103 is fixedly connected thereto.

[0037] Among them, the first pushing component 302 includes a first rotating shaft 302a rotatably connected to the limiting component 301a, and both ends of the first rotating shaft 302a extend to both sides of the limiting component 301a, a second bevel gear 302b is arranged at the outer end of the first rotating shaft 302a, and the second bevel gear 302b is meshed with the first bevel gear 102b, a first inclined plate 302c is arranged at the inner end of the first rotating shaft 302a, and a first connecting shaft 302d is arranged on the inner side of the first inclined plate 302c, the first connecting shaft 302d extends into the temperature measuring component 304 and is rotatably connected to the temperature measuring component 304, the second bevel gear 302b is fixedly connected to the first inclined plate 302c on both sides of the first rotating shaft 302a, and the first connecting shaft 302d is fixedly connected to the inner side of the first inclined plate 302c.

[0038] During use, the first rotating shaft 302a passes through and is rotatably connected to the second limiting ear 301a-3. Through the cooperation of the first rotating shaft 302a and the second bevel gear 302b, the first pushing component 302 can be limited on the second limiting ear 301a-3 as a whole. The second bevel gear 302b is fixedly connected to the outer side of the first rotating shaft 302a, and the first inclined plate 302c is obliquely arranged at the other end of the first rotating shaft 302a, and its inclined direction is downward (such as Figure 7 As shown in FIG. 1 ), through the meshing of the second bevel gear 302b and the first bevel gear 102b, it can be known that when the sliding component 102 rotates in the vertical direction, the first pushing component 302 can be driven to perform a circular rotation in the horizontal direction.

[0039] Among them, the second pushing component 303 includes a second rotating shaft 303a rotatably connected to another group of limiting components 301a, and both ends of the second rotating shaft 303a extend to both sides of the limiting component 301a, a limiting piece 303b is arranged at the outer end of the second rotating shaft 303a, a second inclined plate 303c is arranged at the inner end of the second rotating shaft 303a, and a second connecting shaft 303d is arranged on the inner side of the second inclined plate 303c, the second connecting shaft 303d extends into the temperature measuring component 304 and is rotatably connected to the temperature measuring component 304, the overall structure of the second pushing component 303 is the same as that of the first pushing component 302, the difference is that the outer end of the second rotating shaft 303a is provided with a limiting piece 303b for limiting, and the inclination direction of the second inclined plate 303c is opposite to that of the first inclined plate 302c, and the inclination direction is upward (such as Figure 7 as shown).

[0040] Further, such as Figure 6 As shown, the first rotating shaft 302a and the second rotating shaft 303a are located on the same axis X, and when both rotate in a circle, they rotate around the axis X. At the same time, we call the center point of the first pushing component 302, the second pushing component 303 and the temperature measuring component 304 the central axis point O.

[0041] Among them, the temperature measuring component 304 includes a connecting disk 304a of a disc-shaped structure located between the first pushing component 302 and the second pushing component 303, two groups of connecting cone blocks 304b arranged at the center position of the circle on both sides of the connecting disk 304a, and the first connecting shaft 302d and the second connecting shaft 303d both extend into the connecting disk 304a and are rotatably connected, a rotating shaft 304c arranged below the connecting disk 304a, a thermometer 304d rotatably connected below the rotating shaft 304c, and limit hooks 304e symmetrically arranged on both sides of the thermometer 304d, the thermometer 304d extends between the two groups of arc-shaped strip structures of the arc frame 301b, and the limit hooks 304e located on both sides of the thermometer 304d are fitted and hung on both sides of the arc frame 301b, limiting the thermometer 304d as a whole on the arc frame 301b, and the temperature measuring component 304 as a whole adopts an infrared thermometer to perform temperature measurement through infrared scanning.

[0042] During use, when the sliding component 102 drives the first pushing component 302 to rotate about the axis X, the first rotating shaft 302a will drive the first inclined plate 302c to rotate in a circle about the axis X. At the same time, the obliquely arranged first inclined plate 302c will slightly guide the rotational force transmitted from the axis X direction to the side. However, due to the rotational connection between the first connecting shaft 302d on the side of the first inclined plate 302c and the temperature measuring component 304, the force transmitted from the first oblique plate 302c will be changed again and guided to the temperature measuring component 304. Due to the rotational connection between the first pushing component 302 and the temperature measuring component 304, and the temperature measuring device 304d under the connecting plate 304a being limited by the arc frame 301b, the first pushing component 302 will eventually push the temperature measuring component 304 to rotate in a swinging posture with the central axis point O as the axis and the arc frame 301b as the motion path. During this process, the thermometer 304d below the temperature measuring component 304 will continuously perform multi-point scanning measurements within the arc range of the arc frame 301b. At the same time, the second pushing component 303 located on the other side of the temperature measuring component 304 will make the same action as the first pushing component 302, but the directions of the two are completely opposite, that is, when the first pushing component 302 moves to the top of the temperature measuring component 304, the second pushing component 303 is located below the temperature measuring component 304. Therefore, under the mutual action of the two, the connecting plate 304a will reciprocate within the arc range of the arc frame 301b. During the movement, the arc range of the arc frame 301b is the measurement range of the thermometer 304d. In addition, the connecting plate 304a drives the thermometer 304d to move continuously, so that the thermometer 304d can perform temperature measurement at different positions within the range of the arc frame 301b.

[0043] The remaining structures are the same as those of Example 1.

[0044] Example 3 Reference Figure 1~Figure 4 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that the measurement coverage is adjusted by changing the height of the temperature measuring unit, thereby meeting more usage requirements.

[0045] Compared with Example 2, further, the fixing component 101 includes a fixing plate 101a located on the turbine working cabin, two groups of fixing ears 101b symmetrically arranged above the fixing plate 101a, and the two ends of the motor group 201 respectively pass through the two groups of fixing ears 101b, and two groups of limiting frames 101c symmetrically arranged above the two ends of the fixing plate 101a in a C-shaped structure, and the first driven component 104 and the second driven component 105 are respectively limitedly connected above the two ends of the fixing plate 101a via the two groups of limiting frames 101c, the top end of the first driven component 104 abuts and rotates on the inner side of the top of the C-shaped structure of the limiting frame 101c, and the bottom end abuts and rotates on the upper outside of the fixing plate 101a, so the first driven component 104 will be limited in the limiting frame 101c, and the second driven component 105 is similar, and the fixing ear 101b is used to install the limited motor group 201.

[0046] Among them, the sliding component 102 includes a sliding rod 102a vertically arranged at one end of the fixed plate 101a, and the sliding rod 102a passes through the limit frame 101c, the second driven component 105 and the fixed plate 101a from top to bottom in sequence, a first bevel gear 102b arranged at the lower end of the sliding rod 102a, and a sliding groove 102c opened on the sliding rod 102a. The sliding rod 102a is slidably connected to the fixed component 101 as a whole, and the first bevel gear 102b is fixedly connected to the sliding rod 102a and will rotate following the sliding rod 102a.

[0047] Among them, the second driven component 105 includes a conical block 105a sleeved on the sliding component 102, a plurality of groups of meshing teeth 105b arranged on the lower outer side of the conical block 105a, and the second driven component 105 is meshed with the second driving component 203 through the meshing teeth 105b, and a limiting block 105c is arranged at the center position of the conical block 105a, and the limiting block 105c is slidably connected in the slide groove 102c, the limiting block 105c can only ensure that the second driven component 105 can slide in the vertical direction along the sliding component 102, but the second driven component 105 is limited in the circumferential direction of the sliding component 102 as a whole, and the two cannot rotate circumferentially independently.

[0048] The second driven component 105 has the same overall structure as the first driven component 104, except that a limit block 105c matching the slide groove 102c is provided in the conical block 105a, and the second driven component 105 is slidably connected to the sliding component 102 through the limit block 105c, and a thread matching the bidirectional screw rod 103 is provided inside the first driven component 104, and the first driven component 104 is threadedly connected to the bidirectional screw rod 103 through the thread. When rotating, the bidirectional screw rod 103 which lacks a limit in the vertical direction will move upward or downward through the threaded connection with the first driven component 104. At the same time, the bidirectional screw rod 103 is composed of a bidirectional thread structure, and the bidirectional thread groove arranged on its outer side does not cover the entire rod body, leaving a distance between the top and the end of the rod body. When one end of the bidirectional screw rod 103 reaches the end of the thread engagement with the first driven component 104, it will switch to the other thread, thereby achieving the purpose of the same rotation direction and opposite movement direction.

[0049] Among them, the first driving component 202 includes a driving wheel 202a fixedly connected to one end of the motor group 201, a plurality of storage grooves 202b distributed in a circular position inside the driving wheel 202a, a support spring 202c arranged in the storage groove 202b, and a shift block 202d arranged at the outer end of the support spring 202c and extending outward to the outside of the driving wheel 202a. The first driving component 202 drives the first driven component 104 to rotate in a circle through the engagement of the shift block 202d with the first driven component 104. The shift block 202d extends to the outside of the driving wheel 202a through the elastic support of the support spring 202c, and will shrink into the storage groove 202b when squeezed.

[0050] Furthermore, the shift block 202d has a right-angled side 202d-1 on one side and an arcuate side 202d-2 on the other side. When the first driven component 104 contacts the right-angled side 202d-1, the two will abut against each other and will not be misaligned and separated. Therefore, the first driven component 104 will push the first driving component 202 to rotate. When the first driven component 104 contacts the arcuate side 202d-2, the first driven component 104 will be guided by the arc angle of the arcuate side 202d-2 to force the shift block 202d to retract into the driving wheel 202a, so that the misalignment of the two sides does not interfere with each other. Therefore, the first driven component 104 is no longer engaged with the first driving component 202 and is no longer driven by it. The first driving component 202 and the second driving component 203 are exactly the same in structure, but the two are arranged on both sides of the motor group 201 in opposite ways. Figure 4 It can be seen that the rotation direction of the first driving component 202 is clockwise S, and the rotation direction of the second driving component 203 is counterclockwise N.

[0051] During use, the motor group 201 drives the first driving component 202 to rotate in the clockwise S direction through one of the motors. At this time, the first driving component 202 is meshed with the first driven component 104 for transmission. The first driving component 202 drives the first driven component 104 to rotate. The rotating first driven component 104 will drive the bidirectional screw rod 103 to move upward or downward. When moving downward, the bidirectional screw rod 103 will push the temperature measuring unit 300 to move downward as a whole, so that the detection range of the temperature measuring unit 300 is reduced. At this time, the measurement range is the first measurement range α. When moving upward, the height of the temperature measuring unit 300 will be raised. At this time, the measurement range is the second measurement range β. Figure 1 It can be seen that the first measuring range α when moving downward is smaller than the second measuring range β when moving upward. Therefore, it can be concluded that by changing the height of the temperature measuring unit 300, the purpose of adjusting the measuring range of the device can be achieved, so that the device has stronger flexibility in use; on the contrary, the motor group 201 rotates counterclockwise N through another group of motor second driving components 203, and the second driving component 203 engages with the second driven component 105, which will drive the sliding component 102 to rotate, thereby driving the temperature measuring unit 300 to perform multi-point measurement through the sliding component 102. During this process, the first driving component 202 does not engage with the first driven component 104, so that the temperature measuring unit 300 remains in a fixed position, fixing the measurement range, and ensuring accuracy.

[0052] The remaining structure is the same as that of Example 2.

[0053] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0054] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A steam turbine rotor temperature measuring device, characterized in that: include, The mounting unit (100) comprises a fixed component (101) arranged on a steam turbine working cabin, a sliding component (102) arranged at one end of the fixed component (101) in a vertical direction, a bidirectional screw rod (103) arranged at the other end of the fixed component (101) in a vertical direction, a first driven component (104) arranged above one side of the fixed component (101) and through which the bidirectional screw rod (103) passes, and a second driven component (105) arranged above the other side of the fixed component (101) and through which the sliding component (102) passes; A driving unit (200) comprising a motor group (201) arranged above the fixing member (101), and a first driving member (202) and a second driving member (203) respectively arranged on both sides of the motor group (201), wherein the first driving member (202) and the second driving member (203) are respectively engaged with the first driven member (104) and the second driven member (105); and A temperature measuring unit (300), the temperature measuring unit (300) comprising a limiting component (301) located below the fixing component (101), and the two ends of the limiting component (301) are respectively connected to the ends of the sliding component (102) and the bidirectional screw rod (103), a first pushing component (302) arranged at one end of the limiting component (301) close to the sliding component (102), a second pushing component (303) arranged at one end of the limiting component (301) close to the bidirectional screw rod (103), and a temperature measuring component (304) arranged between the first pushing component (302) and the second pushing component (303), and the lower part of the temperature measuring component (304) is limitedly slidably connected to the limiting component (301).

2. The steam turbine rotor temperature measuring device according to claim 1, characterized in that: The fixing component (101) comprises a fixing plate (101a) located on a working chamber of the steam turbine, two groups of fixing ears (101b) symmetrically arranged above the fixing plate (101a), and two ends of the motor group (201) respectively penetrate the two groups of fixing ears (101b), and two groups of limiting frames (101c) symmetrically arranged above the two ends of the fixing plate (101a) in a C-shaped structure, and the first driven component (104) and the second driven component (105) are respectively connected to the two ends of the fixing plate (101a) via the two groups of limiting frames (101c).

3. The steam turbine rotor temperature measuring device according to claim 2, characterized in that: The sliding component (102) comprises a sliding rod (102a) vertically arranged at one end of the fixed plate (101a), and the sliding rod (102a) passes through the limiting frame (101c), the second driven component (105) and the fixed plate (101a) in sequence from top to bottom, a first bevel gear (102b) arranged at the lower end of the sliding rod (102a), and a sliding groove (102c) opened on the sliding rod (102a).

4. The steam turbine rotor temperature measuring device according to claim 3, characterized in that: The second driven component (105) comprises a conical block (105a) sleeved on the sliding component (102), a plurality of groups of meshing teeth (105b) arranged on the outer side below the conical block (105a), and the second driven component (105) meshes with the second driving component (203) through the meshing teeth (105b), and a limit block (105c) arranged at the center position of the conical block (105a), and the limit block (105c) is slidably connected in the slide groove (102c).

5. The steam turbine rotor temperature measuring device according to claim 4, characterized in that: The second driven component (105) has the same overall structure as the first driven component (104), except that a limit block (105c) matching the slide groove (102c) is provided inside the conical block (105a), and the second driven component (105) is slidably connected to the sliding component (102) via the limit block (105c), while a thread groove matching the bidirectional screw rod (103) is provided inside the first driven component (104), and the first driven component (104) is threadedly connected to the bidirectional screw rod (103) via the thread groove.

6. The steam turbine rotor temperature measuring device according to claim 5, characterized in that: The first driving component (202) comprises a driving wheel (202a) fixedly connected to one end of the motor group (201), a plurality of groups of receiving grooves (202b) distributed in an annular position inside the driving wheel (202a), a supporting spring (202c) arranged in the receiving groove (202b), and a shifting block (202d) arranged at the outer end of the supporting spring (202c) and extending outward to the outside of the driving wheel (202a).

7. The steam turbine rotor temperature measuring device according to claim 6, characterized in that: The limiting component (301) comprises two groups of symmetrically arranged limiting components (301a), and the two groups of limiting components (301a) are respectively rotationally connected and fixedly connected to the sliding rod (102a) and the bidirectional screw rod (103), and an arc frame (301b) is arranged between the two groups of limiting components (301a), and the lower limiting sliding connection of the temperature measuring component (304) is on the arc frame (301b).

8. The steam turbine rotor temperature measuring device according to claim 7, characterized in that: The first pushing component (302) comprises a first rotating shaft (302a) rotatably connected to the limiting component (301a), and both ends of the first rotating shaft (302a) extend to both sides of the limiting component (301a); a second bevel gear (302b) is arranged at the outer end of the first rotating shaft (302a), and the second bevel gear (302b) is meshed with the first bevel gear (102b); a first inclined plate (302c) is arranged at the inner end of the first rotating shaft (302a); and a first connecting shaft (302d) is arranged on the inner side of the first inclined plate (302c), and the first connecting shaft (302d) extends into the temperature measuring component (304) and is rotatably connected to the temperature measuring component (304).

9. The steam turbine rotor temperature measuring device according to claim 8, characterized in that: The second pushing component (303) comprises a second rotating shaft (303a) rotatably connected to another group of the limiting components (301a), and the two ends of the second rotating shaft (303a) extend to the two sides of the limiting components (301a), a limiting plate (303b) arranged at the outer end of the second rotating shaft (303a), a second inclined plate (303c) arranged at the inner end of the second rotating shaft (303a), and a second connecting shaft (303d) arranged on the inner side of the second inclined plate (303c), and the second connecting shaft (303d) extends into the temperature measuring component (304) and is rotatably connected to the temperature measuring component (304).

10. The steam turbine rotor temperature measuring device according to claim 9, characterized in that: The temperature measuring component (304) comprises a connecting disk (304a) of a disc-shaped structure located between the first pushing component (302) and the second pushing component (303), two groups of connecting cone blocks (304b) arranged at the center of a circle on both sides of the connecting disk (304a), the first connecting shaft (302d) and the second connecting shaft (303d) both extending into the connecting disk (304a) to be rotationally connected, a rotating shaft (304c) arranged below the connecting disk (304a), a temperature measuring device (304d) rotationally connected below the rotating shaft (304c), and limit hooks (304e) symmetrically arranged on both sides of the temperature measuring device (304d).

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