CN214066494U - Overspeed test tool for impeller with end face teeth - Google Patents
Overspeed test tool for impeller with end face teeth Download PDFInfo
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- CN214066494U CN214066494U CN202120382707.9U CN202120382707U CN214066494U CN 214066494 U CN214066494 U CN 214066494U CN 202120382707 U CN202120382707 U CN 202120382707U CN 214066494 U CN214066494 U CN 214066494U
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- impeller
- balance
- overspeed test
- nut
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Abstract
The utility model relates to an overspeed test frock for taking terminal surface tooth impeller belongs to impeller capability test technical field. Lack the problem of special overspeed test frock to taking terminal surface tooth impeller for the solution, the utility model provides an overspeed test frock for taking terminal surface tooth impeller for the centre gripping impeller is in order to carry out the overspeed test to the impeller, include: the balance nut, the impeller and the end face tooth meshing sleeve are sequentially sleeved on the core shaft, the end face tooth end of the impeller is connected with the end face tooth meshing sleeve, the other end of the impeller is connected with the balance nut, and the two axial ends of the core shaft are respectively connected with a balancing machine of an overspeed test machine. The utility model discloses a balanced nut and terminal surface tooth meshing cover centre gripping impeller have overcome the problem that lacks the overspeed test frock to taking terminal surface tooth impeller, and the frock design is simple and easy, and the cost is low, satisfies experimental requirement.
Description
Technical Field
The utility model belongs to the technical field of the impeller capability test, especially, relate to an overspeed test frock for taking terminal surface tooth impeller.
Background
The rotor is a rotating part of the turbine expander, the rotor is a supporting part for the rotation of the expander impeller and an outward transfer part of mechanical energy, and the rotor not only needs to ensure the normal high-speed rotation of the impeller, but also needs to efficiently output energy to the downstream. The rotor mainly comprises a rotating main shaft, an impeller and the like. The main shaft adopts a stepped shaft structure, one end of the main shaft is connected with an impeller of the expander, and a primary gear of the gear box on the other side of the main shaft is coaxial with the impeller. The rotating speed of the turboexpander is very high, so that safety accidents such as falling and noise are easy to happen in actual work, and potential safety hazards of impeller operation exist.
The impeller is used as a main part of equipment such as a radial turbo expander and the like, and safe and reliable operation of the impeller is an important condition for ensuring normal operation of a unit. In the manufacturing process of the impeller, the impeller is required to be subjected to an overspeed test, the rotating speed of the overspeed test is 120% of the normal working rotating speed of the impeller, the deformation of an inner hole and an outer circle before and after the impeller overspeed test is checked, and the impeller is checked not to have cracks, cracks and the like.
However, at present, an overspeed test tool for the impeller with the end face teeth is not lacked, and when the impeller with the end face teeth is subjected to an overspeed test by using the prior art, the axial fixation of the impeller cannot be ensured, the operation is difficult, and the process is long in time consumption.
SUMMERY OF THE UTILITY MODEL
Lack the problem of the special overspeed test frock to taking terminal surface tooth impeller for solving the aforesaid, the utility model provides a overspeed test frock for taking terminal surface tooth impeller.
The technical scheme of the utility model:
the utility model provides an overspeed test frock for taking terminal surface tooth impeller for the centre gripping impeller so that carry out overspeed test to the impeller, includes: the balance nut, the impeller and the end face tooth meshing sleeve are sequentially sleeved on the core shaft, the end face tooth end of the impeller is connected with the end face tooth meshing sleeve, the other end of the impeller is connected with the balance nut, and the two axial ends of the core shaft are respectively connected with a balancing machine of an overspeed test machine.
Preferably, a washer is arranged between the balance nut and the impeller.
Preferably, a mandrel balance hole which is vertical to the axial direction of the mandrel is processed on the side surface of the mandrel and is matched with the balance block to realize the dynamic balance of the adjusting tool.
Preferably, a balance nut balance hole which is vertical to the axial direction of the balance nut is processed on the side surface of the balance nut and is matched with the balance block to realize the dynamic balance of the adjusting tool.
Preferably, the face tooth meshing sleeve is connected with the mandrel in an interference fit mode.
Preferably, the balance nut is a hexagonal nut.
The utility model has the advantages that:
1. the utility model overcomes the problem of lacking of overspeed test tools for impellers with end teeth by clamping the impellers by the balance nuts and the end tooth meshing sleeves, and the rotational inertia of the shafting meets the test requirements of an overspeed test machine through reasonable distribution; the core shaft is of a standard structure and has certain universality, and interfaces at two ends are butted with an overspeed test machine; the tool is simple in design and low in manufacturing cost, and meets the test requirements. The end face tooth meshing sleeve is meshed with the impeller through the end face teeth, so that torque is transmitted, and stress is uniform; the utility model provides a special frock of overspeed test of impeller with end face tooth has utilized impeller machining man-hour's special frock, and the dabber that has certain commonality in addition joins in marriage balanced nut, has simple structure, low in cost, safe and reliable's characteristics.
2. The utility model discloses the end plate processing of dabber has dabber balancing hole to guarantee that whole frock keeps dynamic balance when carrying out the overspeed test, thereby ensure the accuracy of test result. The utility model discloses it has balance nut balancing hole to open on fixation nut's the side, and two equilibrium positions are established altogether to whole shafting, through the downthehole balancing piece number of adjustment balancing and angular distribution, twists or screw out, reaches balanced purpose.
3. The utility model discloses an end face tooth meshing cover is connected with dabber interference fit, and interference fit can guarantee that impeller and axle do not separate.
4. The utility model discloses a hexagon nut is selected for use to fixation nut, and the installation of being convenient for during the assembly is screwed up.
Drawings
Fig. 1 is an assembly schematic diagram of an overspeed test tool for an impeller with end face teeth and an impeller according to the present invention;
FIG. 2 is a schematic structural view of a balance nut;
in the figure: 1. a mandrel; 1-1, mandrel balance holes; 2. a balance nut; 2-1, balancing holes of a balancing nut; 3. a gasket; 4. an impeller; 5. the face teeth are engaged with the sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 and 2, and in order to solve the problem of lack of an overspeed test tool specifically for an impeller with end-face teeth, the present embodiment proposes the following technical solutions:
the utility model provides an overspeed test frock for taking terminal surface tooth impeller for centre gripping impeller 4 is in order to carry out overspeed test to impeller 4, includes: the device comprises a mandrel 1, a balance nut 2, a washer 3 and an end face tooth meshing sleeve 5, wherein the balance nut 2, the washer 3, an impeller 4 and the end face tooth meshing sleeve 5 are sequentially sleeved on the mandrel 1, the end face tooth end of the impeller 4 is in interference fit connection with the end face tooth meshing sleeve 5 to ensure that the impeller is not separated from a shaft, the other end of the impeller 4 is connected with the balance nut 2, and the two axial ends of the mandrel 1 are respectively connected with a balancing machine of an overspeed test machine; a mandrel balance hole 1-1 axially vertical to the mandrel 1 is processed on the side surface of the mandrel 1, and a balance nut balance hole 2-1 axially vertical to the balance nut 2 is processed on the side surface of the balance nut 2; the balance nut 2 is a hexagonal nut.
When carrying out the overspeed test, with balanced nut 2, packing ring 3, impeller 4 and terminal surface tooth meshing cover 5 suit in proper order on dabber 1, and take place relative roll when just avoiding the overspeed test, treat each parts rigidity back, to balanced nut 2 with the contact position of impeller 4 and terminal surface tooth meshing cover 5 with the contact position of impeller go up the spot welding fixed, avoid appearing rotatory inconsistent situation, guarantee experimental safe and reliable. The hexagonal nut is used for processing a balance hole, tightening the mandrel 1 and other functions; the end face tooth meshing sleeve 5 is connected with the impeller 4 through end face teeth, and the mandrel 1 is in interference fit with an inner hole of the mandrel; the balance nut 2 is connected with the mandrel 1 through threads, meanwhile, balance nut balance holes 2-1 are formed in the balance nut 2, the whole shaft system is provided with two balance positions, and screws are screwed in or out through adjusting the number and the angle distribution of balance blocks in the balance holes, so that the balance purpose is achieved.
The mandrel of the present embodiment may be satisfied as follows
The inner hole of the impeller is used for overspeed test, and has certain universality; finally, the moment of inertia IX & gt 905664, Y & gt 905657, IZ & gt 696304 and the moment of inertia ratio IX/IZ & gt 1.3 are calculated for the whole tool, so that the requirements of the test machine are met.
The utility model discloses a balance nut 2 and 5 centre gripping impellers of terminal surface tooth meshing cover 4 have overcome the problem that lacks the overspeed test frock to taking terminal surface tooth impeller, the utility model provides a special frock of overspeed test of impeller with terminal surface tooth has utilized impeller machining's special frock in man-hour, has the dabber of certain commonality in addition, joins in marriage balance nut, has simple structure, low in cost, safe and reliable's characteristics.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 and 2, and in order to solve the problem of lack of an overspeed test tool specifically for an impeller with end-face teeth, the present embodiment proposes the following technical solutions:
the utility model provides an overspeed test frock for taking terminal surface tooth impeller for centre gripping impeller 4 is in order to carry out overspeed test to impeller 4, includes: the device comprises a mandrel 1, a balance nut 2, a washer 3 and an end face tooth meshing sleeve 5, wherein the balance nut 2, the washer 3, an impeller 4 and the end face tooth meshing sleeve 5 are sequentially sleeved on the mandrel 1, the end face tooth end of the impeller 4 is connected with the end face tooth meshing sleeve 5 in an interference fit manner, the other end of the impeller 4 is connected with the balance nut 2, and the two axial ends of the mandrel 1 are respectively connected with a balancing machine of an overspeed test machine; the side surface of the mandrel 1 is provided with a mandrel balance hole 1-1 which is vertical to the axial direction of the mandrel 1, and the side surface of the balance nut 2 is provided with a balance nut balance hole 2-1 which is vertical to the axial direction of the balance nut 2.
When carrying out the overspeed test, with balanced nut 2, packing ring 3, impeller 4 and terminal surface tooth meshing cover 5 suit in proper order on dabber 1, and take place relative roll when just avoiding the overspeed test, treat each parts rigidity back, to balanced nut 2 with the contact position of impeller 4 and terminal surface tooth meshing cover 5 with the contact position of impeller go up the spot welding fixed, avoid appearing rotatory inconsistent situation, guarantee experimental safe and reliable. The balance nut 2 is used for processing a balance hole, tightening the mandrel 1 and the like; the end face tooth meshing sleeve 5 is connected with the impeller 4 through end face teeth, and the mandrel 1 is in interference fit with an inner hole of the mandrel; the balance nut 2 is connected with the mandrel 1 through threads, meanwhile, balance nut balance holes 2-1 are formed in the balance nut 2, the whole shaft system is provided with two balance positions, and screws are screwed in or out through adjusting the number and the angle distribution of balance blocks in the balance holes, so that the balance purpose is achieved.
The utility model discloses a balance nut 2 and 5 centre gripping impellers of terminal surface tooth meshing cover 4 have overcome the problem that lacks the overspeed test frock to taking terminal surface tooth impeller, the utility model provides a special frock of overspeed test of impeller with terminal surface tooth has utilized impeller machining's special frock in man-hour, has the dabber of certain commonality in addition, joins in marriage balance nut, has simple structure, low in cost, safe and reliable's characteristics.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 and 2, and in order to solve the problem of lack of an overspeed test tool specifically for an impeller with end-face teeth, the present embodiment proposes the following technical solutions:
the utility model provides an overspeed test frock for taking terminal surface tooth impeller for centre gripping impeller 4 is in order to carry out overspeed test to impeller 4, includes: the device comprises a mandrel 1, a balance nut 2, a gasket 3 and an end face tooth meshing sleeve 5, wherein the balance nut 2, the gasket 3, an impeller 4 and the end face tooth meshing sleeve 5 are sequentially sleeved on the mandrel 1, the end face tooth end of the impeller 4 is connected with the end face tooth meshing sleeve 5, the other end of the impeller 4 is connected with the balance nut 2, and the two axial ends of the mandrel 1 are respectively connected with a balancing machine of an overspeed test machine; the side surface of the mandrel 1 is provided with a mandrel balance hole 1-1 which is vertical to the axial direction of the mandrel 1, and the side surface of the balance nut 2 is provided with a balance nut balance hole 2-1 which is vertical to the axial direction of the balance nut 2.
When carrying out the overspeed test, with balanced nut 2, packing ring 3, impeller 4 and terminal surface tooth meshing cover 5 suit in proper order on dabber 1, and take place relative roll when just avoiding the overspeed test, treat each parts rigidity back, to balanced nut 2 with the contact position of impeller 4 and terminal surface tooth meshing cover 5 with the contact position of impeller go up the spot welding fixed, avoid appearing rotatory inconsistent situation, guarantee experimental safe and reliable. The balance nut 2 is used for processing a balance hole, tightening the mandrel 1 and the like; the end face tooth meshing sleeve 5 is connected with the impeller 4 through end face teeth; the balance nut 2 is connected with the mandrel 1 through threads, meanwhile, balance nut balance holes 2-1 are formed in the balance nut 2, the whole shaft system is provided with two balance positions, and screws are screwed in or out through adjusting the number and the angle distribution of balance blocks in the balance holes, so that the balance purpose is achieved.
The utility model discloses a balance nut 2 and 5 centre gripping impellers of terminal surface tooth meshing cover 4 have overcome the problem that lacks the overspeed test frock to taking terminal surface tooth impeller, the utility model provides a special frock of overspeed test of impeller with terminal surface tooth has utilized impeller machining's special frock in man-hour, has the dabber of certain commonality in addition, joins in marriage balance nut, has simple structure, low in cost, safe and reliable's characteristics.
The fourth concrete implementation mode: in order to solve the problem that an overspeed test tool special for an impeller with end face teeth is lacked, the embodiment provides the following technical scheme:
the utility model provides an overspeed test frock for taking terminal surface tooth impeller for centre gripping impeller 4 is in order to carry out overspeed test to impeller 4, includes: the device comprises a mandrel 1, a balance nut 2, a washer 3 and an end face tooth meshing sleeve 5, wherein the balance nut 2, the washer 3, an impeller 4 and the end face tooth meshing sleeve 5 are sequentially sleeved on the mandrel 1, the end face tooth end of the impeller 4 is connected with the end face tooth meshing sleeve 5, the other end of the impeller 4 is connected with the balance nut 2, and the two axial ends of the mandrel 1 are respectively connected with a balancing machine of an overspeed test machine.
When carrying out the overspeed test, with balanced nut 2, packing ring 3, impeller 4 and terminal surface tooth meshing cover 5 suit in proper order on dabber 1, and take place relative roll when just avoiding the overspeed test, treat each parts rigidity back, to balanced nut 2 with the contact position of impeller 4 and terminal surface tooth meshing cover 5 with the contact position of impeller go up the spot welding fixed, avoid appearing rotatory inconsistent situation, guarantee experimental safe and reliable.
The utility model discloses a balance nut 2 and 5 centre gripping impellers of terminal surface tooth meshing cover 4 have overcome the problem that lacks the overspeed test frock to taking terminal surface tooth impeller, the utility model provides a special frock of overspeed test of impeller with terminal surface tooth has utilized impeller machining's special frock in man-hour, has the dabber of certain commonality in addition, joins in marriage balance nut, has simple structure, low in cost, safe and reliable's characteristics.
The fifth concrete implementation mode: in order to solve the problem that an overspeed test tool special for an impeller with end face teeth is lacked, the embodiment provides the following technical scheme:
the utility model provides an overspeed test frock for taking terminal surface tooth impeller for centre gripping impeller 4 is in order to carry out overspeed test to impeller 4, includes: the device comprises a mandrel 1, a balance nut 2 and an end face tooth meshing sleeve 5, wherein the balance nut 2, an impeller 4 and the end face tooth meshing sleeve 5 are sequentially sleeved on the mandrel 1, the end face tooth end of the impeller 4 is connected with the end face tooth meshing sleeve 5, the other end of the impeller 4 is connected with the balance nut 2, and the two axial ends of the mandrel 1 are respectively connected with a balance machine of an overspeed test machine.
When carrying out the overspeed test, with balanced nut 2, impeller 4 and terminal surface tooth meshing cover 5 suit in proper order on dabber 1, and take place relative roll when avoiding the overspeed test, treat each parts position fixed back, to balanced nut 2 with the contact position of impeller 4 and terminal surface tooth meshing cover 5 with the contact position of impeller go up the spot welding fixed, avoid appearing rotatory inconsistent situation, guarantee experimental safe and reliable.
The utility model discloses a balance nut 2 and 5 centre gripping impellers of terminal surface tooth meshing cover 4 have overcome the problem that lacks the overspeed test frock to taking terminal surface tooth impeller, the utility model provides a special frock of overspeed test of impeller with terminal surface tooth has utilized impeller machining's special frock in man-hour, has the dabber of certain commonality in addition, joins in marriage balance nut, has simple structure, low in cost, safe and reliable's characteristics.
Claims (6)
1. The utility model provides an overspeed test frock for taking terminal surface tooth impeller for centre gripping impeller (4) are in order to carry out overspeed test to impeller (4), its characterized in that includes: the device comprises a mandrel (1), a balance nut (2) and an end face tooth meshing sleeve (5), wherein the balance nut (2), an impeller (4) and the end face tooth meshing sleeve (5) are sequentially sleeved on the mandrel (1), the end face tooth end of the impeller (4) is connected with the end face tooth meshing sleeve (5), the other end of the impeller (4) is connected with the balance nut (2), and the two axial ends of the mandrel (1) are respectively connected with a balancing machine of an overspeed test machine.
2. The overspeed test tool for impellers with end-face teeth according to claim 1, characterized in that a washer (3) is arranged between the balance nut (2) and the impeller (4).
3. The overspeed test tool for the impeller with the end face teeth is characterized in that a mandrel balance hole (1-1) which is perpendicular to the axial direction of the mandrel (1) is formed in the side face of the mandrel (1) and is matched with a balance block to achieve dynamic balance of the tool.
4. The overspeed test tool for the impeller with the end face teeth as claimed in claim 3, wherein a balance nut balance hole (2-1) which is perpendicular to the axial direction of the balance nut (2) is formed in the side face of the balance nut (2) and is matched with a balance block to achieve dynamic balance of the tool.
5. The overspeed test tool for the impeller with the end face teeth is characterized in that the end face tooth meshing sleeve (5) is connected with the mandrel (1) in an interference fit mode.
6. The overspeed test tool for impellers with end-face teeth according to claim 5, characterized in that the balance nut (2) is a hexagon nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120382707.9U CN214066494U (en) | 2021-02-20 | 2021-02-20 | Overspeed test tool for impeller with end face teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120382707.9U CN214066494U (en) | 2021-02-20 | 2021-02-20 | Overspeed test tool for impeller with end face teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214066494U true CN214066494U (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120382707.9U Active CN214066494U (en) | 2021-02-20 | 2021-02-20 | Overspeed test tool for impeller with end face teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214066494U (en) |
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2021
- 2021-02-20 CN CN202120382707.9U patent/CN214066494U/en active Active
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