Steam inlet insertion pipe inner diameter measuring device for steam turbine through-flow transformation

Abstract

The utility model discloses a steam admission intubation inner diameter measuring device for steam turbine through-flow transformation, which comprises a base station, and a positioning assembly is arranged at the top of the base station. The positioning assembly comprises a two-way lead screw, the two-way lead screw is rotationally connected to the interior of the base table, the mounting plate is fixed to the ground, one side of the mounting plate is rotationally connected with the two-way lead screw, the positioning assembly further comprises a servo motor, and the top of a nut block is fixedly connected with a T-shaped push plate; the limiting rod penetrates through the nut block and is movably connected with the nut block. According to the steam inlet insertion pipe inner diameter measuring device for steam turbine through-flow transformation, a servo motor is started to drive a two-way screw rod to rotate, the two-way screw rod rotates and is limited by a limiting rod to enable two nut blocks to get close to each other, and then two T-shaped push plates are driven to get close to each other; and the two T-shaped push plates push the steam inlet insertion pipe to the center of the base station for positioning so as to facilitate subsequent detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to precision measurement technical field, concretely is a steam turbine through -flow reconstruction is with the inner diameter measuring device of admission pipe. BACKGROUND

[0002] Steam turbine is the main equipment of modern thermal power plant, also is used in metallurgical industry, chemical industry, warship power device, steam turbine admission pipe is one of important structural components of steam turbine, its main function is transmission high temperature and high pressure steam in thermal power plant, makes it enter steam turbine unit through pipeline, and steam turbine through -flow reconstruction is with the inner diameter measuring device of admission pipe is a kind of tool for precisely measuring the inner diameter of steam turbine admission pipe.

[0003] The existing steam pipe inner diameter measuring device needs a lot of manual operation when measuring, and the error accumulation can be too much, and the admission pipe is not positioned and fixed when measuring, which can affect measurement.

[0004] Therefore, the utility model provides a steam turbine through -flow reconstruction is with the inner diameter measuring device of admission pipe to solve the above -mentioned problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a steam turbine through -flow reconstruction is with the inner diameter measuring device of admission pipe, solves the above -mentioned problems.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a steam turbine through -flow reconstruction is with the inner diameter measuring device of admission pipe, including base, the top of base is provided with positioning assembly;The top of base is also provided with auxiliary measuring assembly;The positioning assembly includes bidirectional screw rod, the rotation of bidirectional screw rod is connected in the inside of base, the positioning assembly also includes mounting plate, the mounting plate is fixed to ground, the side of mounting plate is rotatably connected with bidirectional screw rod, the positioning assembly also includes servo motor, the output shaft of servo motor is fixedly connected with one end of bidirectional screw rod, the outer wall of bidirectional screw rod is threadedly connected with nut block, the top of nut block is fixedly connected with T-shaped push plate, the both sides of base are fixedly connected with limit rod, the limit rod passes through nut block and is movably connected with it.

[0007] Further, the auxiliary measuring assembly;The auxiliary measuring assembly includes long rod, the long rod is fixedly connected at the top of base, and the top of long rod is fixedly connected with top plate.

[0008] By adopting the above technical scheme, other important components are installed.

[0009] Further, the inside of top plate is fixedly installed with electric telescopic rod, and the movable end of electric telescopic rod is fixedly installed with first high-precision range finder.

[0010] By adopting the above technical scheme, the position of the first high-precision range finder is controlled.

[0011] Further, the top of the base is fixedly connected with an auxiliary plate, the inside of the auxiliary plate is fixedly connected with a hydraulic rod, and the movable end of the hydraulic rod is fixedly connected with an arc-shaped block.

[0012] By adopting the above technical scheme, the measured steam inlet nozzle is reinforced.

[0013] Further, the inside of the auxiliary plate is provided with a through slot.

[0014] By adopting the above technical scheme, the ranging beam of the second high-precision range finder passes through.

[0015] Further, the top of the base is fixedly connected with a high platform block, and the top of the high platform block is fixedly installed with a second high-precision range finder.

[0016] By adopting the above technical scheme, the measurement data is measured.

[0017] Beneficial effects

[0018] The utility model provides a kind of steam turbine flow reconstruction uses steam inlet nozzle inner diameter measuring device.Compared with prior art has the following beneficial effects:

[0019] 1, the steam turbine flow reconstruction uses steam inlet nozzle inner diameter measuring device, the steam inlet nozzle needing to be measured is placed first in the top of base near long rod one side, after being driven two-way screw rod rotation by starting servo motor, two-way screw rod rotation and under the restriction of limit rod will promote two nut blocks mutually close, in turn also with two T-shaped push plate mutually close, two T-shaped push plate in turn steam inlet nozzle is pushed to the middle of base and positioned for subsequent measurement.

[0020] 2、the steam turbine flow transformation with the inlet pipe inner diameter measuring device, through starting two hydraulic rods and then driving the arc block to push the inlet pipe to make it close to the side of the long rod, the distance from the second high-precision distance meter to the side of the long rod is fixed and known, starting the second high-precision distance meter, the distance between the outer wall of the inlet pipe and the second high-precision distance meter is measured by the distance measuring beam, then the outer diameter data of the inlet pipe is obtained by subtracting the distance between the outer wall of the inlet pipe and the second high-precision distance meter from the distance from the second high-precision distance meter to the side of the long rod, then the first high-precision distance meter is lowered to the inside of the inlet pipe by starting the electric telescopic rod, and the length from the first high-precision distance meter to the inner wall of the inlet pipe is obtained by measuring, and since the inlet pipe is close to the side of the long rod, and the distance from the first high-precision distance meter to the side of the long rod is also known, then the wall thickness of the inlet pipe is obtained by subtracting the length from the first high-precision distance meter to the inner wall of the inlet pipe from the distance from the first high-precision distance meter to the side of the long rod, and then the inner diameter data of the inlet pipe is obtained by subtracting twice the wall thickness of the inlet pipe from the outer diameter of the inlet pipe, this way not only has high precision and reduces human intervention, and multiple data of the inlet pipe can be obtained at one time. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is the external structure perspective view of the present application;

[0023] Figure 2 is the structure side view of the present application;

[0024] Figure 3 is the structure top view of the present application;

[0025] Figure 4 is the structure side view of the present application after removing the base.

[0026] In the figure: 1, base; 2, positioning assembly; 21, bidirectional screw rod; 22, mounting plate; 23, servo motor; 24, limit rod; 25, nut block; 26, T-shaped push plate; 3, auxiliary measurement assembly; 31, long rod; 32, top plate; 33, electric telescopic rod; 34, first high-precision distance meter; 35, high platform block; 36, second high-precision distance meter; 37, auxiliary plate; 38, hydraulic rod; 39, arc block; 310, through slot. DETAILED DESCRIPTION

[0027] It should be noted that in the description of the embodiments of the present application, the terms "front, back, left, right, up, down" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The present application will be further described in detail below with reference to the drawings and examples.

[0029] Referring to Figures 1 to 4 The embodiments of the present application provide a steam turbine flow reconstruction inlet pipe inner diameter measuring device, which comprises a base 1, and a positioning assembly 2 is arranged on the top of the base 1; an auxiliary measuring assembly 3 is also arranged on the top of the base 1; the positioning assembly 2 comprises a bidirectional screw rod 21, which is rotatably connected to the inside of the base 1; the positioning assembly 2 further comprises a mounting plate 22, which is fixed to the ground, one side of the mounting plate 22 is rotatably connected with the bidirectional screw rod 21; the positioning assembly 2 further comprises a servo motor 23, the output shaft of the servo motor 23 is fixedly connected with one end of the bidirectional screw rod 21; the outer wall of the bidirectional screw rod 21 is threadedly connected with a nut block 25, the top of the nut block 25 is fixedly connected with a T-shaped push plate 26; the two sides of the base 1 are fixedly connected with limiting rods 24, the limiting rods 24 penetrate through the nut block 25 and are movably connected therewith.

[0030] In specific implementation: the inlet pipe to be measured is first placed on the top of the base 1 near one side of the long rod 31, then the bidirectional screw rod 21 is driven to rotate by starting the servo motor 23, the bidirectional screw rod 21 is rotated and limited by the limiting rod 24, which will cause the two nut blocks 25 to approach each other, and then the two T-shaped push plates 26 will also approach each other, and the two T-shaped push plates 26 will push the inlet pipe to the center of the base 1 for positioning to facilitate subsequent measurement.

[0031] Referring to Figures 1 to 4In one aspect of the embodiment, the auxiliary measurement assembly 3 comprises a long rod 31 fixedly connected to the top of the base 1, and a top plate 32 fixedly connected to the top of the long rod 31. An electric telescopic rod 33 is fixedly installed inside the top plate 32, and a first high-precision range finder 34 is fixedly installed at the movable end of the electric telescopic rod 33. An auxiliary plate 37 is fixedly connected to the top of the base 1, a hydraulic rod 38 is fixedly connected inside the auxiliary plate 37, and an arc block 39 is fixedly connected to the movable end of the hydraulic rod 38. A through slot 310 is formed in the auxiliary plate 37. A high platform block 35 is fixedly connected to the top of the base 1, and a second high-precision range finder 36 is fixedly installed at the top of the high platform block 35.

[0032] In implementation, the two hydraulic rods 38 are started to drive the arc block 39 to push the steam inlet pipe to abut against one side of the long rod 31. The distance from the second high-precision range finder 36 to one side of the long rod 31 is fixed and known. The second high-precision range finder 36 is started, and its ranging light beam is projected on the outer wall of the steam inlet pipe through the through slot 310 to measure the distance between the outer wall of the steam inlet pipe and the second high-precision range finder 36. Then, the distance from the second high-precision range finder 36 to one side of the long rod 31 is subtracted by the distance between the outer wall of the steam inlet pipe and the second high-precision range finder 36 to obtain the outer diameter data of the steam inlet pipe. Then, the electric telescopic rod 33 is started to lower the first high-precision range finder 34 into the steam inlet pipe. The length from the first high-precision range finder 34 to the inner wall of the steam inlet pipe is measured. Since the steam inlet pipe abuts against one side of the long rod 31, and the distance from the first high-precision range finder 34 to one side of the long rod 31 is also known, the distance from the first high-precision range finder 34 to one side of the long rod 31 is subtracted by the length from the first high-precision range finder 34 to the inner wall of the steam inlet pipe to obtain the wall thickness of the steam inlet pipe. Then, the outer diameter of the steam inlet pipe is subtracted by twice the wall thickness of the steam inlet pipe to obtain the inner diameter data of the steam inlet pipe. This way has high precision and reduces human intervention, and multiple data of the steam inlet pipe can be obtained at one time.

[0033] In the scheme, all electrical equipment is powered by an external power supply.

[0034] Working principle: the steam inlet pipe to be measured is first placed on the top of the base 1 near one side of the long rod 31, then the servo motor 23 is started to drive the bidirectional screw rod 21 to rotate, the bidirectional screw rod 21 rotates and is limited by the limiting rod 24 to make the two nut blocks 25 close to each other, and then the two T-shaped push plates 26 close to each other, the two T-shaped push plates 26 push the steam inlet pipe to the middle of the base 1 for positioning to facilitate subsequent measurement, the two hydraulic rods 38 are started to drive the arc-shaped block 39 to push the steam inlet pipe to tightly abut one side of the long rod 31, the distance from the second high-precision distance meter 36 to one side of the long rod 31 is fixed and known, the second high-precision distance meter 36 is started, the distance between the outer wall of the steam inlet pipe and the second high-precision distance meter 36 is measured by the distance measuring beam of the second high-precision distance meter 36 passing through the through slot 310, then the outer diameter data of the steam inlet pipe can be obtained by subtracting the distance between the outer wall of the steam inlet pipe and the second high-precision distance meter 36 from the distance from the second high-precision distance meter 36 to one side of the long rod 31, then the electric telescopic rod 33 is started to lower the first high-precision distance meter 34 into the steam inlet pipe, the length from the first high-precision distance meter 34 to the inner wall of the steam inlet pipe can be obtained by measurement, and since the steam inlet pipe tightly abuts one side of the long rod 31 and the distance from the first high-precision distance meter 34 to one side of the long rod 31 is also known, the thickness of the steam inlet pipe can be obtained by subtracting the length from the first high-precision distance meter 34 to the inner wall of the steam inlet pipe from the distance from the first high-precision distance meter 34 to one side of the long rod 31, then the inner diameter data of the steam inlet pipe can be obtained by subtracting twice the thickness of the steam inlet pipe from the outer diameter of the steam inlet pipe, this way can not only reduce human intervention with high precision, but also obtain multiple data of the steam inlet pipe at one time.

[0035] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the inner diameter of a steam turbine inlet nozzle for flow path modification, comprising a base (1), characterized in that: The top of the base (1) is provided with a positioning assembly (2); the top of the base (1) is also provided with an auxiliary measuring assembly (3); the positioning assembly (2) comprises a bidirectional screw rod (21), which is rotatably connected in the inside of the base (1), the positioning assembly (2) further comprises a mounting plate (22), which is fixed to the ground, one side of the mounting plate (22) is rotatably connected with the bidirectional screw rod (21), the positioning assembly (2) further comprises a servo motor (23), the output shaft of the servo motor (23) is fixedly connected with one end of the bidirectional screw rod (21), the outer wall of the bidirectional screw rod (21) is threadedly connected with a nut block (25), the top of the nut block (25) is fixedly connected with a T-shaped push plate (26), the two sides of the base (1) are fixedly connected with limiting rods (24), the limiting rods (24) penetrate through the nut block (25) and are movably connected therewith.

2. A device for measuring the inner diameter of a steam inlet spool for flow path modification of a steam turbine according to claim 1, characterized in that: The auxiliary measuring assembly (3); the auxiliary measuring assembly (3) comprises an elongated rod (31), which is fixedly connected to the top of the base (1), and a top plate (32) is fixedly connected to the top of the elongated rod (31).

3. A device for measuring the inner diameter of a steam inlet spool for a flow path modification of a steam turbine according to claim 2, characterized in that: The inside of the top plate (32) is fixedly installed with an electric telescopic rod (33), and the movable end of the electric telescopic rod (33) is fixedly installed with a first high-precision range finder (34).

4. The device for measuring the inner diameter of a steam turbine inlet nozzle for flow path modification according to claim 1, characterized in that: The top of the base (1) is fixedly connected with an auxiliary plate (37), the inside of the auxiliary plate (37) is fixedly connected with a hydraulic rod (38), and the movable end of the hydraulic rod (38) is fixedly connected with an arc-shaped block (39).

5. A device for measuring the internal diameter of a steam inlet spool for a flow path modification of a steam turbine according to claim 4, characterized in that: The inside of the auxiliary plate (37) is provided with a through groove (310).

6. A device for measuring the inner diameter of a steam inlet spool for a steam turbine flow path modification according to claim 1, characterized in that: The top of the base (1) is fixedly connected with a high platform block (35), and the top of the high platform block (35) is fixedly installed with a second high-precision range finder (36).

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