Tool for measuring concentricity of water-cooled rotor packing chamber and rotor water inlet pipe

Abstract

The utility model provides a tool for measuring the concentricity of a water-cooled rotor packing chamber and a rotor water inlet pipe, which belongs to the technical field of measuring tools, and comprises a measuring cylinder which is of a circular truncated cone structure and is provided with a first end and a second end along the length direction, the outer diameter of the measuring cylinder is gradually increased in the direction from the first end to the second end; a first round hole is formed in the measuring cylinder and penetrates through the measuring cylinder, and the hole diameter of the first round hole is the same as the outer diameter of the rotor water inlet pipe; the outer peripheral surface of the measuring cylinder is provided with scales, and the outer peripheral surface of the measuring cylinder can abut against the water-cooled rotor packing chamber. The accuracy and efficiency of concentricity measurement work of the water-cooled rotor packing chamber and the rotor water inlet pipe can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring tools, and particularly relates to a measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe. Background Technique

[0002] Under the background of dual carbon, the application of double water-cooled synchronous condensers and generators has been significantly improved. Leakage in the rotor water inlet support area is one of the common problems of water-cooled rotors. The packing is the main seal of the rotor water inlet support. During the installation and maintenance of the unit, accurately measuring the concentricity between the packing chamber and the rotor water inlet pipe plays an important role in preventing leakage in the water inlet support area.

[0003] When the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe is unqualified, problems such as excessive vibration of the rotor water inlet pipe, poor packing sealing effect, heating and wear will occur during operation. Once the abnormal working conditions further develop, it may lead to serious cooling water leakage in the rotor water inlet support area, causing the unit to trip due to the rotor single-point grounding protection action. Currently, during on-site installation and maintenance, operators usually use tools such as feeler gauges (thickness gauges) to determine the concentricity between the water-cooled rotor packing chamber and the water inlet pipe. The detection results are affected by factors such as tool accuracy, personnel experience, and patience, and the effect is poor, which may cause an increase in vibration in the rotor packing area during operation, accelerate the wear and heating of the packing, and form a leakage fault in the rotor water inlet area. Content of the Utility Model

[0004] In view of this, in order to solve the problem that during on-site installation and maintenance, operators usually use tools such as feeler gauges (thickness gauges) to determine the concentricity between the water-cooled rotor packing chamber and the water inlet pipe, and the detection results are affected by factors such as tool accuracy, personnel experience, and patience, and the effect is poor, the utility model proposes a measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A measuring tool for the concentricity between a water-cooled rotor packing chamber and a rotor water inlet pipe, comprising:

[0007] A measuring cylinder, the measuring cylinder is of a frustum-shaped structure, the measuring cylinder has a first end and a second end along the length direction, and from the first end to the second end, the outer diameter of the measuring cylinder gradually increases; the measuring cylinder is provided with a first round hole, the first round hole penetrates through the measuring cylinder, and the aperture of the first round hole is the same as the outer diameter of the rotor water inlet pipe; a scale is provided on the outer peripheral surface of the measuring cylinder, and the outer peripheral surface of the measuring cylinder can be in contact with the water-cooled rotor packing chamber.

[0008] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, it further includes a base, the second end of which is fixedly connected to the base. The base is a cylindrical structure, and the outer diameter of the base is larger than that of the second end. The base is provided with a second circular hole that penetrates the base, and the diameter of the second circular hole is the same as the outer diameter of the rotor water inlet pipe. The first circular hole communicates with the second circular hole and their centers are on the same straight line.

[0009] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, the thickness of the base is greater than 1 cm.

[0010] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, the measuring cylinder includes a plurality of sub-cylinder petals, and the plurality of sub-cylinder petals are detachably connected.

[0011] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, the base includes a plurality of sub-bases, and the plurality of sub-bases are fixedly connected to the plurality of sub-cylinder petals in a one-to-one correspondence.

[0012] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, the number of the sub-cylinder petals and the sub-bases is four.

[0013] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, one side of the sub-cylinder petal is provided with a protrusion, and the other side is provided with a groove. The protrusion of the sub-cylinder petal can be inserted into the groove of an adjacent sub-cylinder petal.

[0014] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, the protrusion is magnetic, and a magnetic part is provided in the groove, and the protrusion can be magnetically attracted to the magnetic part.

[0015] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, a marking line is provided on the outer peripheral surface of the measuring cylinder. The distance between the water-cooled rotor packing chamber and the rotor water inlet pipe is h, and the outer diameter of the rotor water inlet pipe is D. The marking line is located at the position where the outer diameter of the measuring cylinder is (D + 2h).

[0016] As a preferred embodiment of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe, the marking line has a color or is thickened.

[0017] Compared with the prior art, the beneficial effects of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe provided by the present utility model are:

[0018] 1. The present utility model provides a measuring tool for the concentricity between a water-cooled rotor stuffing box and a rotor water inlet pipe. When using this measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe, the first circular hole of the measuring cylinder is sleeved on the rotor water inlet pipe. The first end of the measuring cylinder is closer to the water-cooled rotor stuffing box than the second end. Along the extending direction of the rotor water inlet pipe, the measuring cylinder is pushed towards the direction where the water-cooled rotor stuffing box is located. When the measuring cylinder contacts the water-cooled rotor stuffing box, stop and observe the contact situation between the water-cooled rotor stuffing box and the outer peripheral surface of the measuring cylinder. At this time, at each angle, the water-cooled rotor stuffing box should contact the outer diameter of the measuring cylinder at (D + 2h). If the condition is not met, adjust the distance between the rotor water inlet pipe and the water-cooled rotor stuffing box until the above condition is met at each position, thereby completing the accurate confirmation of the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe. Among them, D is the outer diameter of the rotor water inlet pipe; h is the radial distance between the water-cooled rotor stuffing box and the rotor water inlet pipe. The outer peripheral surface of the measuring cylinder is provided with scales, and the values on the scales are the outer diameters of the measuring cylinder, which can enable the operator to clearly determine the position of the outer diameter of the measuring cylinder at (D + 2h). This measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe can improve the accuracy and efficiency of the measurement work for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe.

[0019] 2. The present utility model provides a measuring tool for the concentricity between a water-cooled rotor stuffing box and a rotor water inlet pipe. During the use of this measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe, first, the circular contour of the inner hole of the split cylinder flap can be contacted with the outside of the rotor water inlet pipe to determine the distances between the water-cooled rotor stuffing box and the rotor water inlet pipe at various angles. The contact part between the water-cooled rotor stuffing box and the split cylinder flap should be at the outer diameter of the measuring cylinder at (D + 2h). If the condition is not met, adjust the distance between the rotor water inlet pipe and the water-cooled rotor stuffing box. Perform the above operations between the rotor water inlet pipe and the water-cooled rotor stuffing box for all four split cylinder flaps to complete the preliminary adjustment of the concentricity. The four split cylinder flaps will be connected to form a measuring cylinder. At this time, overall observe whether the water-cooled rotor stuffing box contacts the outer diameter of the measuring cylinder at (D + 2h) at each angle. If the condition is met, the measurement of the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe is completed. This measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe can improve the accuracy and efficiency of the measurement work for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0021] Figure 1 is the front view of the measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe provided by the specific embodiment of the present utility model;

[0022] Figure 2 It is a top view of a measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe provided by a specific embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the split cylinder petals of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe provided by a specific embodiment of the present utility model along the first perspective;

[0024] Figure 4 It is a schematic structural diagram of the split cylinder petals of the measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe provided by a specific embodiment of the present utility model along the second perspective.

[0025] In the figure:

[0026] 1. Measuring cylinder; 11. First end; 12. Second end; 13. Split cylinder petals;

[0027] 2. Base; 21. Sub-base;

[0028] 3. Scale;

[0029] 4. Marking line;

[0030] 5. Protrusion;

[0031] 6. Groove. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may also include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "right" etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] See Figures 1-4 Referring to this embodiment, the present utility model provides a measuring tool for the concentricity between a water-cooled rotor packing chamber and a rotor water inlet pipe. The measuring tool for the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe includes a measuring cylinder 1. The measuring cylinder 1 is of a frustum-shaped structure. The measuring cylinder 1 has a first end 11 and a second end 12 along the length direction. From the first end 11 to the second end 12, the outer diameter of the measuring cylinder 1 gradually increases. The measuring cylinder 1 is provided with a first round hole which penetrates through the measuring cylinder 1, and the aperture of the first round hole is the same as the outer diameter of the rotor water inlet pipe. The outer peripheral surface of the measuring cylinder 1 is provided with scales 3, and the outer peripheral surface of the measuring cylinder 1 can be abutted against the water-cooled rotor packing chamber.

[0037] The measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe, when in use, sleuth the first round hole of the measuring cylinder 1 on the rotor water inlet pipe. The first end 11 of the measuring cylinder 1 is closer to the water-cooled rotor stuffing box than the second end 12. Along the extending direction of the rotor water inlet pipe, push the measuring cylinder 1 towards the direction where the water-cooled rotor stuffing box is located. Stop when the measuring cylinder 1 contacts the water-cooled rotor stuffing box, and observe the contact situation between the water-cooled rotor stuffing box and the outer peripheral surface of the measuring cylinder 1. At this time, at each angle, the water-cooled rotor stuffing box should contact the outer diameter of the measuring cylinder 1 at (D + 2h). If the condition is not met, adjust the distance between the rotor water inlet pipe and the water-cooled rotor stuffing box until all positions meet the above conditions, so as to complete the accurate confirmation of the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe. Wherein, D is the outer diameter of the rotor water inlet pipe; h is the radial distance between the water-cooled rotor stuffing box and the rotor water inlet pipe. The outer peripheral surface of the measuring cylinder 1 is provided with a scale 3, and the value on the scale 3 is the outer diameter of the measuring cylinder 1, which can enable the operator to clearly determine the position at the outer diameter of the measuring cylinder 1 at (D + 2h). The measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe can improve the accuracy and efficiency of the measurement work of the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe.

[0038] It can be understood that the outer diameter of the first end 11 of the measuring cylinder 1 is less than (D + 2h), and the outer diameter of the second end 12 is greater than (D + 2h).

[0039] Optionally, the measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe further includes a base 2. The second end 12 is fixedly connected to the base 2. The base 2 is of a cylindrical structure. The outer diameter of the base 2 is greater than the outer diameter of the second end 12. The base 2 is provided with a second round hole that penetrates through the base 2. The aperture of the second round hole is the same as the outer diameter of the rotor water inlet pipe. The first round hole and the second round hole are communicated and the centers are on the same straight line. The base 2 can make the measuring tool for the concentricity between the water-cooled rotor stuffing box and the rotor water inlet pipe further include the base 2 convenient to grip and hold, which facilitates the operation of the staff. Moreover, the lower plane of the base 2 is flat and can be stably placed on the horizontal plane, which is convenient for storage.

[0040] Optionally, the thickness of the base 2 is greater than 1 cm. It further facilitates the staff to grip and hold for convenient operation.

[0041] Optionally, the measuring cylinder 1 includes a plurality of sub-cylinder petals 13, and the plurality of sub-cylinder petals 13 are detachably connected. The position relationship between the water-cooled rotor stuffing box and the rotor water inlet pipe at different angles along the circumferential direction of the rotor water inlet pipe can be measured by the plurality of sub-cylinder petals 13 respectively. The position relationship at each angle can be adjusted respectively. Finally, the plurality of sub-cylinder petals 13 can be connected so that the whole measuring cylinder 1 is sleeved on the rotor water inlet pipe. In this embodiment, the scale 3 is arranged at the two side edges of the sub-cylinder petals 13.

[0042] Optionally, the base 2 includes a plurality of sub - bases 21, and the plurality of sub - bases 21 are fixedly connected to the plurality of sub - cylinder petals 13 in one - to - one correspondence. The base 2 is split into four sub - bases 21 with equal volume and symmetry at 90° in the direction perpendicular to the lower surface of the base 2 for use. Each sub - base 21 and the corresponding sub - cylinder petal 13 are of an integrated structure.

[0043] In this embodiment, the number of the sub - cylinder petals 13 and the sub - bases 21 is four.

[0044] During the use process, the circular contour of the inner circular hole of the sub - cylinder petal 13 can be first contacted with the outside of the rotor inlet pipe to determine the distance between the water - cooled rotor packing chamber and the rotor inlet pipe at each angle. The contact part between the water - cooled rotor packing chamber and the sub - cylinder petal 13 should be at the position where the outer diameter of the measuring cylinder 1 is (D + 2h). If the condition is not met, the distance between the rotor inlet pipe and the water - cooled rotor packing chamber is adjusted. The above operation is carried out between the four sub - cylinder petals 13 and the rotor inlet pipe and the water - cooled rotor packing chamber to complete the preliminary adjustment of concentricity. The four sub - cylinder petals 13 will be connected to form the measuring cylinder 1. At this time, overall observation is carried out at each angle to check whether the water - cooled rotor packing chamber contacts the position where the outer diameter of the measuring cylinder 1 is (D + 2h). If the condition is met, the measurement of the concentricity between the water - cooled rotor packing chamber and the rotor inlet pipe is completed. This measuring tool for the concentricity between the water - cooled rotor packing chamber and the rotor inlet pipe can improve the accuracy and efficiency of the concentricity measurement work between the water - cooled rotor packing chamber and the rotor inlet pipe.

[0045] Optionally, one side of the sub - cylinder petal 13 is provided with a protrusion 5, and the other side is provided with a groove 6. The protrusion 5 of the sub - cylinder petal 13 can be inserted into the groove 6 of an adjacent sub - cylinder petal 13 to facilitate the combined use of the four sub - cylinder petals 13. In this embodiment, the number of the protrusions 5 and the grooves 6 is both 2, and the two grooves 6 and the two protrusions 5 are arranged in one - to - one correspondence.

[0046] Optionally, the protrusion 5 is magnetic, and a magnetic part is arranged in the groove 6, and the protrusion 5 can be magnetically attracted to the magnetic part to facilitate the connection of adjacent sub - cylinder petals 13.

[0047] Optionally, a marking line 4 is provided on the outer peripheral surface of the measuring cylinder 1. The distance between the water - cooled rotor packing chamber and the rotor inlet pipe is h, and the outer diameter of the rotor inlet pipe is D. The marking line 4 is located at the position where the outer diameter of the measuring cylinder 1 is (D + 2h), which can enable the operator to more quickly determine the position where the outer diameter of the measuring cylinder 1 is (D + 2h).

[0048] In this embodiment, the marking line 4 has a color or is thickened to emphasize the marking line 4.

[0049] Obviously, the embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. According to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A tool for measuring the concentricity of a water-cooled rotor packing chamber and a rotor water inlet pipe, characterized in that: include: A measuring cylinder (1), the measuring cylinder (1) is a truncated cone structure, the measuring cylinder (1) has a first end (11) and a second end (12) along the length direction, and the outer diameter of the measuring cylinder (1) gradually increases from the first end (11) to the second end (12); the measuring cylinder (1) is provided with a first circular hole, the first circular hole passes through the measuring cylinder (1), and the aperture of the first circular hole is the same as the outer diameter of the rotor water inlet pipe; the outer peripheral surface of the measuring cylinder (1) is provided with a scale (3), and the outer peripheral surface of the measuring cylinder (1) can abut against the packing chamber of the water-cooled rotor.

2. The measuring tool for the concentricity of the water-cooled rotor packing chamber and the rotor water inlet pipe according to claim 1 is characterized by: The invention also comprises a base (2), the second end (12) being fixedly connected to the base (2), the base (2) being a cylindrical structure, the outer diameter of the base (2) being larger than the outer diameter of the second end (12), the base (2) being provided with a second circular hole, the second circular hole penetrating the base (2), the aperture of the second circular hole being the same as the outer diameter of the rotor water inlet pipe, the first circular hole being connected to the second circular hole and the centers of the circles being on the same straight line.

3. The measuring tool for the concentricity of the water-cooled rotor packing chamber and the rotor water inlet pipe according to claim 2, characterized in that: The thickness of the base (2) is greater than 1 cm.

4. The measuring tool for the concentricity of the water-cooled rotor packing chamber and the rotor water inlet pipe according to claim 2, characterized in that: The measuring cylinder (1) comprises a plurality of cylinder flaps (13), and the plurality of cylinder flaps (13) are detachably connected.

5. The tool for measuring the concentricity between the packing chamber of a water-cooled rotor and the water inlet pipe of the rotor according to claim 4, characterized in that: The base (2) comprises a plurality of sub-seats (21), and the plurality of sub-seats (21) are fixedly connected to the plurality of sub-cylinder petals (13) in a one-to-one correspondence.

6. The measuring tool for the concentricity of the water-cooled rotor packing chamber and the rotor water inlet pipe according to claim 5, characterized in that: The number of the sub-cylinder petals (13) and the number of the sub-seats (21) are both four.

7. The measuring tool for the concentricity between the packing chamber of a water-cooled rotor and the water inlet pipe of the rotor according to claim 5, characterized in that: A protrusion (5) is provided on one side of the split-cylinder flap (13), and a groove (6) is provided on the other side. The protrusion (5) of the split-cylinder flap (13) can be inserted into the groove (6) of another adjacent split-cylinder flap (13).

8. The tool for measuring the concentricity between the water-cooled rotor packing chamber and the rotor water inlet pipe according to claim 7, characterized in that: The protrusion (5) is magnetic, a magnetic piece is arranged in the groove (6), and the protrusion (5) can be magnetically attracted to the magnetic piece.

9. The tool for measuring the concentricity between the packing chamber of a water-cooled rotor and the water inlet pipe of the rotor according to claim 1, characterized in that: A marking line (4) is provided on the outer circumferential surface of the measuring cylinder (1), the distance between the water-cooled rotor packing chamber and the rotor water inlet pipe is h, the outer diameter of the rotor water inlet pipe is D, and the marking line (4) is located at the outer diameter of the measuring cylinder (1) being (D+2h).

10. The tool for measuring the concentricity of the water-cooled rotor packing chamber and the rotor water inlet pipe according to claim 9, characterized in that: The marking line (4) is colored or thickened.

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