Turbine bearing bush temperature sensor convenient to install

Abstract

The utility model discloses a steam turbine bearing bush temperature sensor convenient to install, which is characterized in that the steam turbine bearing bush temperature sensor comprises a thermal resistor, the thermal resistor is fixedly connected with an installation seat, the installation seat is fixedly connected with a spring, the thermal resistor is fixedly connected with a measuring line, and the spring sleeves the thermal resistor; the pressing sheet is provided with a central through hole, the thermal resistor is matched with the central through hole, and the spring is fixedly connected with the pressing sheet; the thrust pad is provided with a counter bore and a mounting hole, the mounting hole is communicated with the counter bore, the thermal resistor is matched with the mounting hole, and the pressing sheet is matched with the counter bore. The utility model relates to the technical field of measurement, in particular to a steam turbine bearing bush temperature sensor convenient to install. The technical problem to be solved by the utility model is to provide a steam turbine bearing bush temperature sensor which is convenient to install and is beneficial for realizing the installation of a thermal resistor.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a turbine bearing temperature sensor which is easy to install. Background Art

[0002] The thrust pad of the steam turbine provides axial thrust for the steam turbine. The temperature of the thrust pad is an important monitoring item for the safe operation of the steam turbine. The existing thermal resistor installation method is embedded installation and fixed with sealant. Figure 7 shown.

[0003] Steam turbine thrust pad temperature is typically measured using embedded RTDs, which are secured with sealant after installation. This method makes the RTD difficult to remove during maintenance, making installation and repair inconvenient. The sealant also prevents the RTD end face from properly contacting the pad, resulting in inaccurate pad temperature measurement and compromising safe turbine operation. Furthermore, the RTD leads are not securely attached where the sealant is applied, making them susceptible to breakage due to vibration and high temperatures. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a turbine bearing temperature sensor which is easy to install and is conducive to the installation of a thermal resistor.

[0005] The utility model adopts the following technical solutions to achieve the purpose of the invention:

[0006] A turbine bearing temperature sensor that is easy to install, characterized in that it includes: a thermistor, the thermistor is fixedly connected to a mounting seat, the mounting seat is fixedly connected to a spring, the thermistor is fixedly connected to a measuring line, the spring ring covers the thermistor; a pressing plate, provided with a central through-hole, the thermistor matches the central through-hole, the spring is fixedly connected to the pressing plate; a thrust pad, provided with a countersunk hole and a mounting hole, the mounting hole is connected to the countersunk hole, the thermistor matches the mounting hole, and the pressing plate matches the countersunk hole. The existing fixed installation method of the thermistor is changed to a pressing plate and spring installation method. A tightening spring is added between the pressing plate and the thermistor, and the spring force causes the temperature measuring end face of the thermistor to be in close contact with the thrust pad, so that the measuring line is fixed under vibration and high temperature conditions, and the steam turbine safety monitoring can be carried out normally.

[0007] As a further limitation of the present technical solution, the pressing plate is provided with a set of through-holes, the thrust pad is provided with a set of threaded holes, a set of bolts are respectively passed through the corresponding through-holes, and a set of bolts are respectively threadedly connected to the corresponding threaded holes. By using the bolts, the fixing of the pressing plate is facilitated.

[0008] As a further limitation of the present invention, the present invention further includes a wire support assembly comprising a hollow column threadedly connected to a hollow screw, the hollow screw bearing being connected to a circular plate, and the circular plate being fixedly connected to a set of uniformly distributed straight grooves. By using the straight grooves, after the measuring wire passes through the hollow column and the hollow screw, it is laid along the straight grooves and away from the thrust pad.

[0009] As a further refinement of the present invention, the hollow column is fixedly connected to a set of evenly distributed guide tubes, each of which is provided with a square rod, and each of the square rods is fixedly connected to an extrusion column. By using the extrusion column, the wire support assembly is installed in the countersunk hole.

[0010] As a further limitation of this technical solution, the hollow columns are fixedly connected to a group of evenly distributed inner blocks, each of the extrusion columns is fixedly connected to an outer block, each of the inner blocks and each of the outer blocks is rotationally connected to one end of a connecting rod, and the other end of each connecting rod is rotationally connected to a power rod, each of which is nested in a corresponding straight slot. By placing the power rod in the straight slot and using the connecting rod for rotational connection, the synchronous movement of the group of extrusion columns is facilitated.

[0011] As a further limitation of the present technical solution, the size of the countersunk hole is larger than that of the pressing piece, so as to facilitate the installation of the pressing piece.

[0012] As a further limitation of the present technical solution, the inner diameter of the central through hole is slightly larger than the size of the thermal resistor, so as to facilitate the installation of the thermal resistor.

[0013] Compared with related technologies, the turbine bearing temperature sensor provided by the present invention is easy to install and has the following beneficial effects:

[0014] (1) Change the existing fixed installation method of the thermal resistor to a pressure plate and spring installation method. Add a tension spring between the pressure plate and the thermal resistor. The pressure plate fixes the thermal resistor to the pad with three fixing screws. The spring force makes the temperature measuring end face of the thermal resistor closely contact with the thrust pad. The measuring line is fixed in the vibration and high temperature environment, so that the steam turbine safety monitoring can be carried out normally.

[0015] (2) By using a wire support assembly, the measuring wire is kept away from the thrust pad to avoid being burned by the heated thrust pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation of the present utility model.

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 .

[0018] Figure 3This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 1 .

[0019] Figure 4 It is a partial exploded view of the utility model.

[0020] Figure 5 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 2 .

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0022] Figure 7 This is the existing thermal resistor installation method.

[0023] In the figure: 1. thrust pad, 2. pressing plate, 3. bolt, 4. thermal resistor, 5. mounting seat, 6. spring, 7. through hole, 8. center through hole, 9. measuring line, 10. countersunk hole, 11. threaded hole, 12. mounting hole, 13. straight groove, 14. power rod, 16. extrusion column, 17. connecting rod, 18. square rod, 19. guide tube, 20. hollow column, 21. inner block, 22. outer block, 23. hollow screw, 24. round plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0025] Example 1: A turbine bearing temperature sensor that is easy to install, comprising: a thermal resistor 4, the thermal resistor 4 is fixedly connected to a mounting seat 5, the mounting seat 5 is fixedly connected to a spring 6, the thermal resistor 4 is fixedly connected to a measuring line 9, and the spring 6 is looped around the thermal resistor 4; a pressing plate 2 is provided with a central through-hole 8, the thermal resistor 4 matches the central through-hole 8, and the spring 6 is fixedly connected to the pressing plate 2; a thrust pad 1 is provided with a countersunk hole 10 and a mounting hole 12, the mounting hole 12 is connected to the countersunk hole 10, the thermal resistor 4 matches the mounting hole 12, and the pressing plate 2 matches the countersunk hole 10. The existing fixed installation method of the thermal resistor 4 is changed to an installation method of a pressing plate 2 and a spring 6. A tightening spring 6 is added between the pressing plate 2 and the thermal resistor 4. The spring force 6 makes the temperature measuring end face of the thermal resistor 4 in close contact with the thrust pad 1, and the measuring line 9 is fixed under vibration and high temperature conditions, so that the steam turbine safety monitoring can proceed normally.

[0026] The pressing plate 2 is provided with a group of through holes 7, and the thrust pad 1 is provided with a group of threaded holes 11. A group of bolts 3 respectively pass through the corresponding through holes 7, and a group of bolts 3 are respectively threadedly connected to the corresponding threaded holes 11. By using the bolts 3, the fixing of the pressing plate 2 is conveniently achieved.

[0027] The size of the countersunk hole 10 is larger than that of the pressing piece 2, so as to facilitate the installation of the pressing piece 2.

[0028] The inner diameter of the central through hole 8 is slightly larger than the size of the thermal resistor 4, so as to facilitate the installation of the thermal resistor 4.

[0029] The working principle of the turbine bearing temperature sensor provided by the utility model, which is easy to install, is as follows:

[0030] Place the thermal resistor 4 into the mounting hole 12, the pressing piece 2 into the countersunk hole 10, and use the bolt 3 to pass through the through hole 7 and thread the threaded hole 11 to install the thermal resistor 4. Under the elastic action of the spring 6, the temperature measuring end face of the thermal resistor 4 is in close contact with the thrust pad 1.

[0031] Example 2: This example further elaborates on Example 1 and includes a wire support assembly comprising a hollow column 20 threadedly connected to a hollow screw 23, which is bearing-connected to a circular plate 24. The circular plate 24 is fixedly connected to a set of evenly distributed straight grooves 13. By using straight grooves 13, after the measuring wire 9 passes through the hollow column 20 and hollow screw 23, it is laid along the straight grooves 13, away from the thrust pad 1.

[0032] The hollow column 20 is fixedly connected to a group of evenly distributed guide tubes 19, each of which is provided with a square rod 18, and each of the square rods 18 is fixedly connected to an extrusion column 16. By using the extrusion column 16, the wire support assembly is installed in the countersunk hole 10.

[0033] The hollow columns 20 are fixedly connected to a group of evenly distributed inner blocks 21, and each of the extrusion columns 16 is fixedly connected to an outer block 22. Each of the inner blocks 21 and each of the outer blocks 22 is rotatably connected to one end of a connecting rod 17, and the other end of each connecting rod 17 is rotatably connected to a power rod 14. Each power rod 14 is nested in a corresponding straight slot 13. By arranging the power rod 14 in the straight slot 13 and using a connecting rod for rotational connection, the synchronous movement of a group of extrusion columns 16 is conveniently achieved.

[0034] The working principle of the turbine bearing temperature sensor provided by the utility model, which is easy to install, is as follows:

[0035] The measuring line 9 passes through the hollow column 20 and the hollow screw 23, and the line support assembly is placed in the countersunk hole 10. The hollow screw 23 is rotated, and the hollow screw 23 rotates and moves at the same time, driving the circular plate 24 to move, the circular plate 24 drives the straight groove 13 to move, the straight groove 13 drives the power rod 14 to move, the power rod 14 drives the connecting rod 17 to swing, the outer connecting rod 17 drives the outer block 22 to move, the outer block 22 drives the extrusion column 16 to move, the extrusion column 16 drives the square rod 18 to move along the guide tube 19, so that the extrusion column 16 contacts the thrust pad 1, and stops rotating the hollow screw 23.

[0036] The wire support assembly can be fixed by means of a bolt passing through the extrusion column 16 and threadedly connected to the thrust pad 1 .

[0037] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A turbine bearing temperature sensor that is easy to install, characterized in that: include: A thermal resistor (4), the thermal resistor (4) is fixedly connected to a mounting base (5), the mounting base (5) is fixedly connected to a spring (6), the thermal resistor (4) is fixedly connected to a measuring line (9), and the spring (6) surrounds the thermal resistor (4); The pressing sheet (2) is provided with a central through hole (8), the thermal resistor (4) matches the central through hole (8), and the spring (6) is fixedly connected to the pressing sheet (2); The thrust pad (1) is provided with a countersunk hole (10) and a mounting hole (12); the mounting hole (12) is connected to the countersunk hole (10); the thermal resistor (4) matches the mounting hole (12); and the pressing piece (2) matches the countersunk hole (10).

2. The easy-to-install turbine bearing temperature sensor according to claim 1 is characterized in that: The pressing plate (2) is provided with a group of through holes (7), the thrust pad (1) is provided with a group of threaded holes (11), a group of bolts (3) respectively pass through the corresponding through holes (7), and a group of bolts (3) are respectively threadedly connected to the corresponding threaded holes (11).

3. The easy-to-install turbine bearing temperature sensor according to claim 1 is characterized in that: The invention also includes a line support assembly, wherein the line support assembly includes a hollow column (20), the hollow column (20) is threadedly connected to a hollow screw (23), the hollow screw (23) is bearing-connected to a circular plate (24), and the circular plate (24) is fixedly connected to a group of evenly distributed straight grooves (13).

4. The easy-to-install turbine bearing temperature sensor according to claim 3 is characterized in that: The hollow column (20) is fixedly connected to a group of evenly distributed guide tubes (19), each of the guide tubes (19) is provided with a square rod (18), and each of the square rods (18) is fixedly connected to an extrusion column (16).

5. The easy-to-install turbine bearing temperature sensor according to claim 4 is characterized in that: The hollow column (20) is fixedly connected to a group of evenly distributed inner blocks (21), each of the extrusion columns (16) is fixedly connected to an outer block (22), each of the inner blocks (21) and each of the outer blocks (22) is rotatably connected to one end of a connecting rod (17), and the other end of each connecting rod (17) is rotatably connected to a power rod (14), and each of the power rods (14) is nested in the corresponding straight groove (13).

6. The easy-to-install turbine bearing temperature sensor according to claim 1, characterized in that: The size of the countersunk hole (10) is larger than the size of the pressed sheet (2).

7. The easy-to-install turbine bearing temperature sensor according to claim 1, characterized in that: The inner diameter of the central through hole (8) is slightly larger than the size of the thermal resistor (4).

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