CN202673945U - Self-lock anti-reverse nut of condensate pump - Google Patents
Self-lock anti-reverse nut of condensate pump Download PDFInfo
- Publication number
- CN202673945U CN202673945U CN 201220322370 CN201220322370U CN202673945U CN 202673945 U CN202673945 U CN 202673945U CN 201220322370 CN201220322370 CN 201220322370 CN 201220322370 U CN201220322370 U CN 201220322370U CN 202673945 U CN202673945 U CN 202673945U
- Authority
- CN
- China
- Prior art keywords
- reverse
- nut
- self
- nylon
- condensate pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a self-lock anti-reverse nut of a condensate pump. The self-lock anti-reverse nut of the condensate pump comprises a nut body, wherein a screw hole is arranged inside the nut body. The self-lock anti-reverse nut of the condensate pump is characterized in that an anti-reverse nylon bush for playing an anti-reverse role is lined inside the screw hole. Compared with the prior art, the utility model has the advantages that the anti-reverse nylon bush lined inside the lock nut is taken as an anti-reverse part; polyamide is known as nylon, and is a generic term of thermoplastic resin containing a repeated amide group -(NHCO)- on a molecular main chain; the nylon is flexible angular translucent or milky crystal resin, has high mechanical strength, high softening point, heat resistance, abrasive resistance, self-lubricating property, damping property and silencing property, has oil resistance, weak acid resistance, alkali resistance and common solvent while the friction coefficient of the nylon on steel is much higher than those of other common materials, so that stronger static friction force (pre-tightening force) and tightening torque of the lock nut can be produced, and protection of a thread is facilitated.
Description
Technical field
The utility model relates to the condensate pump field, particularly for the anti-reverse nut of condensate pump self-locking that turns to the working state of variation under the fixing and abnormal condition of condensate pump to rotor.
Background technique
Condensate pump is mainly carried condensed water for the thermal power plant, under the condition of high vacuum the water of condensation in the condenser hotwell is extracted out, carries the water close to the saturation temperature under the condenser pressure to enter oxygen-eliminating device, is one of three large main pumps of power plant.The operation of condensate pump General Requirements long-time continuous, and the overhaul life is very long, therefore most important to the protection of pump.
In the industry, condensate pump generally is to adopt impeller nut or locking nut that rotor part is locked at present.When pump normally moved, the hand of spiral of impeller nut or locking nut and the sense of rotation of impeller had a self-tightening power, and rotatable parts can not become flexible; When the pump abnormal running caused reversing, self-tightening power disappeared and produces a power reverse with it, might make rotatable parts loosening, caused impeller, axle sleeve etc. to come off, and pump is caused very large harm.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of condensate pump self-locking anti-reverse nut for above-mentioned technical deficiency.When it had solved the pump counter-rotating, rotor part may become flexible, and causes impeller, axle sleeve etc. to come off, and pump is caused the problem of very large harm.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
The anti-reverse nut of a kind of condensate pump self-locking comprises nut body, has a screw in the described nut body, it is characterized in that, is lined with the anti-reverse nylon lining of together anti-reverse effect in the described screw.
The utility model patent compared with prior art adopts the anti-reverse nylon lining of locking nut liner as anti-reverse part.Polyamide (Polyamide) is commonly called as nylon, be contain on the molecular backbone recurring amide radical group-[NHCO]-the thermoplastic resin general name.Nylon is the translucent or ivory crystalline resin of toughness horn shape, has very high mechanical strength, and softening point is high, heat-resisting, wear-resistant, has self lubricity, shock absorption and noise reduction, oil resistant, weak acid resistant, alkaline-resisting and common solvent.And nylon to the friction factor of steel much larger than other common used materials, therefore can produce the screw-down torque of larger stiction (pretightening force) and locking nut, and help the protection of double thread.Table 1 is the friction factor contrast of different materials:
And general impeller nut or locking nut friction pair material are steel-steel, the screw-down torque that the stiction of its generation and locking are is the anti-reverse nut of self-locking of nylon-steel much smaller than friction pair material, therefore adopt the anti-reverse nut of self-locking more reliable at condensate pump.
Description of drawings
Fig. 1 is condensate pump rotor part schematic diagram.
Fig. 2 is structural representation of the present utility model.
Among the figure: 1 is the guide bearing inner sleeve, and 2 are the anti-reverse nut of self-locking, and 3 is impeller key, and 4 is impeller, and 5 is axle sleeve, and 6 is axle, and 7 is coupling key, and 8 is locking nut, and 9 is anti-reverse nylon lining.
Embodiment
Further describe the utility model below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, in axle 6 location, impeller 4 front ends adopt anti-reverse nut 2 lockings of self-locking to impeller 4 by axle sleeve 5.The anti-reverse nut 2 of self-locking comprises nut body, has a nut bore in the nut body, is lined with an anti-reverse nylon lining 9 in nut bore.
Impeller 4 passes through impeller key 3 driven rotary by axle 6.When pump reversed, if the torque reaction that produces is enough large, 2 on the anti-reverse nut of general self-locking can become flexible even come off, and caused impeller 4, axle sleeve 5 axial transmissions, caused the vibration of pump, and pump and unit are caused very large harm.And adopt the anti-reverse nut 2 of self-locking can produce larger screw-down torque, just can avoid to a great extent the generation of above-mentioned situation, Here it is invention the purpose of this utility model place.
Claims (1)
1. the anti-reverse nut of condensate pump self-locking comprises nut body, has a screw in the described nut body, it is characterized in that, is lined with the anti-reverse nylon lining of together anti-reverse effect in the described screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322370 CN202673945U (en) | 2012-07-04 | 2012-07-04 | Self-lock anti-reverse nut of condensate pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322370 CN202673945U (en) | 2012-07-04 | 2012-07-04 | Self-lock anti-reverse nut of condensate pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673945U true CN202673945U (en) | 2013-01-16 |
Family
ID=47494853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322370 Expired - Fee Related CN202673945U (en) | 2012-07-04 | 2012-07-04 | Self-lock anti-reverse nut of condensate pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603877A (en) * | 2013-11-21 | 2014-02-26 | 中国南方航空工业(集团)有限公司 | Locking device |
-
2012
- 2012-07-04 CN CN 201220322370 patent/CN202673945U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603877A (en) * | 2013-11-21 | 2014-02-26 | 中国南方航空工业(集团)有限公司 | Locking device |
| CN103603877B (en) * | 2013-11-21 | 2016-01-06 | 中国南方航空工业(集团)有限公司 | Locking device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2679827B1 (en) | Turbo device | |
| US20050238513A1 (en) | Double piston for a compressor | |
| CN202673945U (en) | Self-lock anti-reverse nut of condensate pump | |
| CN201794786U (en) | Roots blower | |
| CN206221142U (en) | A kind of inclined disc type hydraulic plunger motor or pump for using submerged in water | |
| CN106481736A (en) | Double motive power driving gear-boxes and freewheel clutch integrated | |
| CN210013863U (en) | Self-locking centrifugal compressor impeller structure | |
| CN205592624U (en) | High pressure gear oil pump | |
| CN206092485U (en) | Water pump of wear -resisting pump axle and applied this pump shaft | |
| CN104500678B (en) | Transmission structure of hydraulic torque converter | |
| CN207364192U (en) | Swinging cycloidal-pin gear speed reducer | |
| WO2008108447A1 (en) | Tensioner | |
| CN110017300B (en) | Self-locking centrifugal compressor impeller structure | |
| CN209267354U (en) | The electric cylinder of external cooling cycle structure | |
| TW200643306A (en) | Centrifugal pump with air venting design | |
| CN209398757U (en) | Clutch and vehicle | |
| CN102733761B (en) | Pumping rods with miter rod heads | |
| CN201757168U (en) | Spinning assembled synchronous pulley | |
| CN201606452U (en) | Conical-cylindrical gear reducer | |
| WO2010081464A3 (en) | Sliding blade machine | |
| DE102005053548A1 (en) | Electric motor, has blower wheel driving cooling air flow and including blower blade, notch receiving locking ring to lock wheel, and bore hole provided at end surfaces, in which straddle shaft of transmitter is axially placed behind blower | |
| CN205654848U (en) | Zero back clearance gear and use device's speed reducer | |
| CN204961617U (en) | Be applied to firewood and move high -elastic shaft coupling device on screw compressor | |
| CN110056496A (en) | Crankshaft and compressor | |
| CN207316017U (en) | A kind of fluid torque-converter of mute stabilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150704 |
|
| EXPY | Termination of patent right or utility model |