Centering device for water feeding pump set

Abstract

The utility model relates to a centering device for a water feeding pump set, and the device comprises a first connecting rod, a second connecting rod, a dial indicator set, and a sleeve rod assembly disposed between the first connecting rod and the second connecting rod. The first connecting rod is parallel to the second connecting rod and is in sliding connection with the second connecting rod through the loop bar assembly, and the dial indicator group is installed on the first connecting rod. According to the technical scheme, the centering device is wide in application range.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power generation equipment, and particularly, to a centering device for a feed water pump group. Background Art

[0002] The feed water pump group is a key equipment widely used in industries such as thermal power plants, nuclear power plants, and chemical industries. At present, the couplings of the feed water pump group are all attached with intermediate short connection structures. Generally, a centering device uses a connecting rod support to be erected between the two coupling wheels, and a dial indicator is installed on the connecting rod support. Among them, the size of the connecting rod support is fixed and it is difficult to be applicable to the two coupling wheels at different distances. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a centering device for a feed water pump group, and the centering device has a wide application range.

[0004] To achieve the above purpose, the present disclosure provides a centering device for a feed water pump group. The centering device includes a first connecting rod, a second connecting rod, a dial indicator group, and a sleeve rod assembly disposed between the first connecting rod and the second connecting rod. The first connecting rod is arranged parallel to the second connecting rod and is slidably connected to the second connecting rod through the sleeve rod assembly, and the dial indicator group is installed on the first connecting rod.

[0005] Optionally, the sleeve rod assembly includes a first sleeve rod and a second sleeve rod. The second sleeve rod is slidably sleeved outside the first sleeve rod. Among them, the first sleeve rod is fixed to the first connecting rod and is perpendicularly arranged relative to the first connecting rod, and the second sleeve rod is fixed to the second connecting rod and is perpendicularly arranged relative to the second connecting rod.

[0006] Optionally, the sleeve rod assembly includes a locking member, and the first sleeve rod and the second sleeve rod are provided with locking portions that cooperate with the locking member to lock the position of the first sleeve rod relative to the second sleeve rod.

[0007] Optionally, the locking member is configured as a bolt, and the locking portions include a first threaded hole and a second threaded hole respectively provided on the first sleeve rod and the second sleeve rod. The number of the first threaded holes is multiple, and the multiple first threaded holes are uniformly spaced along the axial direction of the first sleeve rod.

[0008] Optionally, the locking member is configured as a nut and a stud. The locking portion includes a third threaded hole and a through groove. The through groove is provided on the first sleeve rod and extends along the axial direction of the first sleeve rod. The second sleeve rod is provided with the third threaded hole. The stud passes through the through groove and is fastened to the third threaded hole, and the nut is threadedly connected to the stud and abuts against the first sleeve rod.

[0009] Optionally, the first sleeve rod includes a first limiting portion, the second sleeve rod includes a second limiting portion, and the first limiting portion cooperates with the second limiting portion to limit the circumferential rotation of the first sleeve rod relative to the second sleeve rod.

[0010] Optionally, the first limiting portion is configured as a groove extending along the axial direction of the first sleeve rod, the second limiting portion is configured as a convex block protruding toward the first sleeve rod along the axial direction of the second sleeve rod, and the convex block is slidably connected to the groove.

[0011] Optionally, the first connecting rod is provided with an installation hole for installing the dial indicator set, the feed water pump set includes at least two couplings, the second connecting rod is fixed to one of the two couplings, and the measuring portion of the dial indicator set contacts the other of the two couplings.

[0012] Optionally, the first connecting rod includes a connected main body section and an extension section. The extension section is arranged at the end of the main body section and is perpendicular to the main body section. The installation hole includes a first installation hole and two second installation holes. The first installation hole is arranged on the extension section and the axial direction of the first installation hole is perpendicular to the axial direction of the extension section. The two second installation holes are respectively arranged at both ends of the main body section and the axial direction of the second installation hole is perpendicular to the axial direction of the main body section.

[0013] Optionally, the second connecting rod is provided with a fixing hole and is fixed to the coupling through a fastener.

[0014] Through the above technical solution, in the centering device provided by the present disclosure, a sleeve rod assembly is arranged between the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod are slidably connected through the sleeve rod assembly. In this way, the distance between the first connecting rod and the second connecting rod is adjusted through the sleeve rod assembly to match the distance between the two couplings in the actual situation. The second connecting rod is fixed to the coupling, and the dial indicator set arranged on the first connecting rod has a measuring portion and is arranged close to the other coupling to measure and adjust the center of the coupling. Among them, the setting of the sleeve rod assembly can make the distance between the first connecting rod and the second connecting rod be adjusted appropriately according to the different distances between the two couplings, so as to improve the application range of the centering device. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0016] Figure 1 is a centering device for the coupling of a feed water pump set provided by an embodiment of the present disclosure;

[0017] Figure 2 It is a centering device for the coupling of a feed water pump group provided by another embodiment of the present disclosure.

[0018] Description of Reference Numerals

[0019] 1 - First connecting rod; 11 - Main body section; 111 - Second mounting hole; 12 - Extension section; 121 - First mounting hole; 2 - Second connecting rod; 21 - Fixing hole; 3 - Sleeve rod assembly; 31 - First sleeve rod; 311 - First threaded hole; 312 - Groove; 32 - Second sleeve rod; 321 - Second threaded hole; 322 - Bump; 4 - Dial indicator; 5 - Coupling. Specific Embodiments

[0020] The following will describe in detail the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0021] In the present disclosure, unless otherwise stated, the orientation terms such as "inner" and "outer" usually refer to "inner" and "outer" relative to the contour of the corresponding component itself. The terms "first", "second", etc. used are to distinguish one element from another, and do not have sequentiality and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure, and should not be construed as a limitation to the present disclosure.

[0022] According to the specific embodiments provided by the present disclosure, referring to Figure 1 and Figure 2 as shown in, a centering device for a feed water pump group is provided. The centering device includes a first connecting rod 1, a second connecting rod 2, a dial indicator group, and a sleeve rod assembly 3 disposed between the first connecting rod 1 and the second connecting rod 2. The first connecting rod 1 is arranged parallel to the second connecting rod 2 and is slidably connected to the second connecting rod 2 through the sleeve rod assembly 3. The dial indicator group is mounted on the first connecting rod 1.

[0023] Through the above technical solution, in the centering device provided by the present disclosure, a sleeve rod assembly 3 is provided between the first connecting rod 1 and the second connecting rod 2, and the first connecting rod 1 and the second connecting rod 2 are slidably connected through the sleeve rod assembly 3. In this way, the distance between the first connecting rod 1 and the second connecting rod 2 is adjusted through the sleeve rod assembly 3 to match the distance between the two couplings 5 in the actual situation. The second connecting rod 2 is fixed to the coupling 5, and the dial indicator group provided on the first connecting rod 1 has a measuring portion and is arranged close to the other coupling 5 for measuring and adjusting the center of the coupling 5. Among them, the setting of the sleeve rod assembly 3 can make the distance between the first connecting rod 1 and the second connecting rod 2 be adjusted appropriately according to the different distances between the two couplings 5, so as to improve the applicable range of the centering device.

[0024] In the centering device for a feed water pump set provided by the present disclosure, the sleeve rod assembly 3 can be constructed in any suitable form, and the present disclosure does not make specific limitations thereto. As an exemplary embodiment, referring to Figure 1 shown in, the sleeve rod assembly 3 may include a first sleeve rod 31 and a second sleeve rod 32, and the second sleeve rod 32 is slidably sleeved outside the first sleeve rod 31. Wherein, the first sleeve rod 31 may be fixed to the first connecting rod 1 and is arranged perpendicular to the first connecting rod 1, and the second sleeve rod 32 may be fixed to the second connecting rod 2 and is arranged perpendicular to the second connecting rod 2. In this way, the first sleeve rod 31 and the second sleeve rod 32 are respectively fixed to the first connecting rod 1 and the second connecting rod 2, and the first sleeve rod 31 and the second sleeve rod 32 are slidably connected, that is, the sliding connection between the first connecting rod 1 and the second connecting rod 2 is realized, and the first sleeve rod 31 and the second sleeve rod 32 are respectively perpendicular to the first connecting rod 1 and the second connecting rod 2, so that the first connecting rod 1, the second connecting rod 2 and the sleeve rod assembly are in an "I" shape, increasing the structural strength of the centering device and improving the reliability of its use.

[0025] In the centering device for a feed water pump set provided by the present disclosure, as an exemplary embodiment, referring to Figure 1 shown in, the sleeve rod assembly 3 may include a locking member, and the first sleeve rod 31 and the second sleeve rod 32 are provided with locking portions cooperating with the locking member for locking the position of the first sleeve rod 31 relative to the second sleeve rod 32. In this way, after controlling the first sleeve rod 31 to slide relative to the second sleeve rod 32 to a suitable position, that is, the distance between the first connecting rod 1 and the second connecting rod 2 meets the requirements, the first sleeve rod 31 and the second sleeve rod 32 are locked by the locking member to ensure that the distance between the first connecting rod 1 and the second connecting rod 2 is fixed, and to prevent the first sleeve rod 31 from sliding relative to the second sleeve rod 32 during use and affecting the measurement accuracy.

[0026] In the centering device for a feed water pump set provided by the present disclosure, the locking member can be constructed in any suitable form, and the present disclosure does not make specific limitations thereto. As an exemplary embodiment, referring to Figure 1 shown in, the locking member can be constructed as a bolt, and the locking portion may include a first threaded hole 311 and a second threaded hole 321 respectively provided on the first sleeve rod 31 and the second sleeve rod 32. The number of the first threaded holes 311 may be multiple, and the multiple first threaded holes 311 may be uniformly spaced along the axial direction of the first sleeve rod 31. That is to say, according to the different distances between the two couplings 5 in the actual situation, the first threaded hole 311 at a suitable position is selected to cooperate with the second threaded hole 321, and the first threaded hole 311 and the second threaded hole 321 are fastened by a bolt to realize the fixation of the position between the first sleeve rod 31 and the second sleeve rod 32.

[0027] In some other embodiments, the locking member can be configured as a stud and a nut. The locking portion can include a third threaded hole and a through groove. The through groove can be provided on the first sleeve rod 31 and extend along the axial direction of the first sleeve rod 31. The second sleeve rod 32 can be provided with a third threaded hole. The stud passes through the through groove and is fastened to the third threaded hole. The nut is threadedly connected to the stud and abuts against the first sleeve rod 31. That is to say, when controlling the first sleeve rod 31 to slide relative to the second sleeve rod 32, the rod portion of the stud can slide in the through groove. When the first sleeve rod 31 slides to the required position, the stud is tightened into the third threaded hole, and the nut is rotated to abut against the first sleeve rod 31, so as to fix the position between the first sleeve rod 31 and the second sleeve rod 32.

[0028] In the centering device for the feed water pump set provided by the present disclosure, as an exemplary embodiment, the first sleeve rod 31 can include a first limiting portion, and the second sleeve rod 32 can include a second limiting portion. The first limiting portion and the second limiting portion cooperate with each other to limit the circumferential rotation of the first sleeve rod 31 relative to the second sleeve rod 32. In this way, restricting the rotation of the first sleeve rod 31 relative to the second sleeve rod 32 can avoid the rotation of the first connecting rod 1 relative to the second connecting rod 2 and improve the connection stability between the first connecting rod 1 and the second connecting rod 2.

[0029] Wherein, the first limiting portion and the second limiting portion can be configured in any suitable form, and the present disclosure does not make specific limitations thereon. As an exemplary embodiment, referring to Figure 2 as shown in, the first limiting portion can be configured as a groove 312 extending along the axial direction of the first sleeve rod 31, and the second limiting portion can be configured as a protrusion 322 protruding axially from the second sleeve rod 32 towards the first sleeve rod 31. The protrusion 322 is slidably connected to the groove 312. In this way, while not affecting the axial sliding of the first sleeve rod 31 along the second sleeve rod 32, the circumferential rotation of the first sleeve rod 31 along the second sleeve rod 32 can be restricted, that is, the rotation of the first connecting rod 1 relative to the second connecting rod 2 is restricted, and the connection stability between the first connecting rod 1 and the second connecting rod 2 is improved.

[0030] In some other embodiments, referring to Figure 1 as shown in, the first sleeve rod 31 and the second sleeve rod 32 can have a matching polygonal cross-section, which can also avoid the situation that the first sleeve rod 31 rotates relative to the second sleeve rod 32 while satisfying the sliding connection between the first sleeve rod 31 and the second sleeve rod 32. The present disclosure does not make specific limitations thereon.

[0031] In the centering device for the feed water pump set provided by the present disclosure, as an exemplary embodiment, referring to Figure 1As shown, the first connecting rod 1 may be provided with mounting holes for mounting a dial indicator set. The feed pump set includes at least two couplings 5. The second connecting rod 2 may be fixed to one of the two couplings 5, and the measuring part of the dial indicator set may be in contact with the other of the two couplings 5. The fixation between the centering device and the coupling 5 can be achieved through the second connecting rod 2. The first connecting rod 1 can provide a carrier for the installation of the dial indicator set, and at the same time, the distance between the first connecting rod 1 and the second connecting rod 2 can be adjusted to achieve the contact between the measuring part of the dial indicator set and the coupling 5. In this way, the measurement and adjustment of the center of the coupling 5 can be achieved through the conventional three-bridge alignment method.

[0032] Among them, the first connecting rod 1 may be constructed in any suitable form to realize the measurement of the center of the coupling 5 by the dial indicator set, and the present disclosure does not make specific limitations thereto. As an exemplary embodiment, referring to Figure 1 As shown, the first connecting rod 1 may include a connected main body section 11 and an extension section 12. The extension section 12 may be provided at the end of the main body section 11 and arranged perpendicular to the main body section 11. The mounting holes may include a first mounting hole 121 and two second mounting holes 111. The first mounting hole 121 may be provided on the extension section 12 and the axial direction of the first mounting hole 121 is perpendicular to the axial direction of the extension section 12. The two second mounting holes 111 may be respectively provided at both ends of the main body section 11 and the axial direction of the second mounting holes 111 is perpendicular to the axial direction of the main body section 11. In this way, the extension section 12 may be arranged above the coupling 5, and the main body section 11 is located on the end face side of the coupling 5. The first dial indicator 4 is mounted on the side of the extension section 12 close to the coupling 5, and the measuring part is arranged towards the coupling 5. The second dial indicator 4 and the third dial indicator 4 may be mounted on the side of the main body section 11 close to the coupling 5, and the measuring part is arranged towards the coupling 5 to meet the measurement requirements of the three-bridge alignment method. In some other embodiments, the dial indicator 4 may also be mounted on the side of the extension section 12 or the main body section 11 far from the coupling 5, and the measuring part of the dial indicator 4 may pass through the first mounting hole 121 and the second mounting hole 111 to penetrate the extension section 12 and the main body section 11 to contact the coupling 5, which can also meet the measurement requirements of the three-bridge alignment method.

[0033] In the centering device for the feed pump set provided by the present disclosure, the second connecting rod 2 may be fixed to the coupling 5 in any suitable manner, and the present disclosure does not make specific limitations thereto. As an exemplary embodiment, referring to Figure 1 As shown, the second connecting rod 2 may be provided with a fixing hole 21 and may be fixed to the coupling 5 through a fastener. The setting of the fixing hole 21 and the fastener can facilitate the disassembly and assembly between the second connecting rod 2 and the coupling 5, and improve the measurement and adjustment efficiency of the center of different couplings 5 by the staff.

[0034] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0035] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0036] Furthermore, any combination can be made among the various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A centering device for a feed water pump set, characterized in that, The centering device includes a first connecting rod, a second connecting rod, a dial indicator set, and a sleeve rod assembly disposed between the first connecting rod and the second connecting rod. The first connecting rod is arranged parallel to the second connecting rod and is slidably connected to the second connecting rod through the sleeve rod assembly. The dial indicator set is mounted on the first connecting rod.

2. The centering device for the feed water pump set according to claim 1, characterized in that, The sleeve rod assembly includes a first sleeve rod and a second sleeve rod. The second sleeve rod is slidably sleeved outside the first sleeve rod. Wherein, the first sleeve rod is fixed to the first connecting rod and is perpendicularly arranged relative to the first connecting rod, and the second sleeve rod is fixed to the second connecting rod and is perpendicularly arranged relative to the second connecting rod.

3. The centering device for the feed water pump set according to claim 2, characterized in that, The sleeve rod assembly includes a locking member. The first sleeve rod and the second sleeve rod are provided with locking portions that cooperate with the locking member to lock the position of the first sleeve rod relative to the second sleeve rod.

4. The centering device for the feed water pump set according to claim 3, characterized in that, The locking member is configured as a bolt. The locking portions include a first threaded hole and a second threaded hole respectively provided on the first sleeve rod and the second sleeve rod. The number of the first threaded holes is multiple, and the multiple first threaded holes are evenly spaced along the axial direction of the first sleeve rod.

5. The centering device for the feed water pump set according to claim 3, characterized in that, The locking member is configured as a nut and a stud. The locking portion includes a third threaded hole and a through groove. The through groove is provided on the first sleeve rod and extends along the axial direction of the first sleeve rod. The second sleeve rod is provided with the third threaded hole. The stud passes through the through groove and is fastened to the third threaded hole. The nut is threadedly connected to the stud and abuts against the first sleeve rod.

6. The centering device for a feed water pump set according to claim 2, characterized in that, The first sleeve rod includes a first limiting portion, and the second sleeve rod includes a second limiting portion. The first limiting portion cooperates with the second limiting portion to limit the circumferential rotation of the first sleeve rod relative to the second sleeve rod.

7. The centering device for a feed water pump set according to claim 6, characterized in that, The first limiting portion is configured as a groove extending along the axial direction of the first sleeve rod, and the second limiting portion is configured as a convex block protruding toward the first sleeve rod along the axial direction of the second sleeve rod. The convex block is slidably connected to the groove.

8. The centering device for a feed water pump set according to any one of claims 1-7, characterized in that, The first connecting rod is provided with a mounting hole for mounting the dial indicator set. The feed pump set includes at least two couplings. The second connecting rod is fixed to one of the two couplings, and the measuring portion of the dial indicator set contacts the other of the two couplings.

9. The centering device for the feed water pump set according to claim 8, characterized in that, The first connecting rod includes a connected main body section and an extension section. The extension section is provided at the end of the main body section and is perpendicularly arranged relative to the main body section. The mounting hole includes a first mounting hole and two second mounting holes. The first mounting hole is provided on the extension section and the axial direction of the first mounting hole is perpendicular to the axial direction of the extension section. The two second mounting holes are respectively provided at both ends of the main body section and the axial direction of the second mounting hole is perpendicular to the axial direction of the main body section.

10. The centering device for the feed water pump set according to claim 8, characterized in that, The second connecting rod is provided with a fixing hole and is fixed to the coupling through a fastener.

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