CN202309350U - Furnace water pump motor with built-in conductive sealing joint - Google Patents
Furnace water pump motor with built-in conductive sealing joint Download PDFInfo
- Publication number
- CN202309350U CN202309350U CN2011204520238U CN201120452023U CN202309350U CN 202309350 U CN202309350 U CN 202309350U CN 2011204520238 U CN2011204520238 U CN 2011204520238U CN 201120452023 U CN201120452023 U CN 201120452023U CN 202309350 U CN202309350 U CN 202309350U
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- motor
- pump motor
- leading
- out terminal
- conductive
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Abstract
The utility model discloses a furnace water pump motor with a built-in conductive sealing joint, and aims to improve the reliability of the sealing of the outgoing line connector of the furnace water pump motor, prolong the service life of the furnace water pump motor, and avoid a serious grounding accident of the furnace water pump motor, which is caused by sealing failure of a conductive sealing joint. The furnace water pump motor comprises a motor casing; a motor stator, a motor rotor and a motor winding are arranged in the motor casing; a tubular conductive base is arranged on the motor casing; a leading-out terminal is mounted in the conductive base via a supporting ring and a sleeve; the sleeve is fixed in the conductive base via a nut screwed at the end part of the conductive base; the power supply line of the motor winding is led out of the motor casing via the conductive base and the leading out terminal in sequence; a first radial gasket ring is arranged between the outer wall of the sleeve and the inner wall of the conductive base; a second radial gasket ring is arranged between the inner wall of the sleeve and the outer wall of the leading-out terminal; an axial gasket ring is arranged between the bottom surface of the leading-out terminal and the top surface of the supporting ring.
Description
Technical field
The utility model belongs to the thermal power generating technology field, specially refers to a kind of boiler pump motor that is applied to the interior loading type conductive seal joint of large turbo-type generator group boiler.
Background technology
Boiler water circulating pump (being called for short the stove water pump) is mounted in the visual plant that is used to carry HTHP stove water in the large turbo-type generator group boiler main pipe system, and boiler pump motor is the drive motors of boiler water circulating pump.The temperature of large turbo-type generator group boiler water is up to more than 300 ℃, and operating pressure reaches more than the 20MPa.Because the working medium that boiler water circulating pump is carried is the stove water of HTHP, the connection between pump case and the drive motors (boiler pump motor) can't be carried out effective seal partly with regard to present technology.Therefore the structure of no stuffing box is partly all adopted in the pump housing of stove water pump both domestic and external and the connection between the boiler pump motor, and stove water pump pump case and boiler pump motor shell connect into a seal chamber that interconnects.
The winding of boiler water circulating pump motor directly is immersed in the cooling water, and the temperature of cooling water will remain on below 80 ℃.Cooling water adopts the cooling of dispelling the heat of closed cycle mode, the temperature of maintenance cooling water through the heat exchanger that is contained in the motor side.The boiler water circulating pump motor is the wet stator motor of pressing in high, and the lead-out wire of the stator winding of boiler water circulating pump motor is drawn out to the outside in motor casing, is one of key technology of boiler water circulating pump motor.Pinout connector is that the conductive seal joint need have beyond the good electrical properties, also reliable sealing performance must be arranged.The joint of present boiler water circulating pump motor stator winding both domestic and external has two kinds of structures, and a kind of is to be called rear-loading type conductive seal joint outside installation the in the casing of boiler water circulating pump motor, and what the sealing of this conductive seal joint was adopted is radial seal; Another kind is outside the casing of boiler water circulating pump motor, to install inwards, is called muzzle-loading conductive seal joint, and what the conductive seal joint adopted is axial seal.At present these two kinds of conductive seal joints adopt is radially or axially single sealing; On reliability, exist certain hidden danger; In case sealing is broken down or when losing efficacy, can take place pressure furnace water from the conductive seal joint to external leakage, cause the stopping accident of boiler water circulating pump motor ground connection.
The utility model content
The purpose of the utility model is the boiler pump motor that proposes a kind of interior loading type conductive seal joint; To improve the sealing reliability of boiler water circulating pump motor lead-out wire; Prolong the useful life of boiler water circulating pump motor, avoid the boiler water circulating pump motor to cause serious ground fault because of conductive seal joint sealing fault.
The boiler pump motor of the interior loading type conductive seal joint of the utility model comprises electric machine casing; Be provided with motor stator, rotor and motor windings in the electric machine casing; Electric machine casing is provided with the conductive seat of tubulose; Key is in the said conductive seat to be equipped with through bracing ring, sleeve pipe the leading-out terminal of the hard of tubulose, and the nut that said sleeve pipe utilization is threaded onto the conductive seat end is fixed in the conductive seat; The power line of said motor windings passes conductive seat and leading-out terminal successively and draws electric machine casing; Be provided with first radial direction seal ring between the outer wall of said sleeve pipe and the inwall of conductive seat; Be provided with second radial direction seal ring between the inwall of said sleeve pipe and the outer wall of leading-out terminal; Be provided with axial sealing ring between the bottom surface of said leading-out terminal and the end face of bracing ring.
Use the sealing ring of single kind than traditional boiler water circulating pump motor; The boiler pump motor of the interior loading type conductive seal joint of the utility model is provided with radial direction seal ring and axial sealing ring simultaneously in conductive seat, two kinds of sealing rings receive force direction different, be difficult to lose efficacy simultaneously; Like this when some sealing rings lost efficacy; Remaining sealing ring can continue to play a role, and guarantees to block the seepage current, realizes insulation and sealing function reliably.
Further, said bracing ring is that soft material is processed, and bracing ring is clamped in the afterbody of leading-out terminal through C shape card, can between leading-out terminal, increase sealing at bracing ring like this, guarantees sealing effectiveness.
Further, the inwall of said conductive seat is provided with first annular groove, and said first radial direction seal ring is installed in first annular groove; The outer wall of said leading-out terminal is provided with second annular groove, and said second radial direction seal ring is installed in second annular groove.Mode through annular groove is set is installed radial direction seal ring, can prevent radial direction seal ring run-off the straight or dislocation in the installation process, influences sealing effectiveness.
Further, said first radial direction seal ring has two at least, to guarantee sealing effectiveness.
The utility model improves through the boiler pump motor to loading type conductive seal joint in existing; Employing has axially and the novel lead-out wire seal nipple of radially dual-seal substitutes existing lead-out wire seal nipple axial or radially single sealing; Improved the sealing reliability of pinout connector; Minimizing because of sealing break down the HTHP stove water that causes from pinout connector to external leakage; Cause the possibility of boiler water circulating pump motor ground fault, and the useful life that can prolong boiler water circulating pump motor pinout connector sealing is more than 50%.
Description of drawings
Fig. 1 is the structural representation of conductive seal joint of boiler pump motor of the interior loading type conductive seal joint of the utility model.
Embodiment
Contrast accompanying drawing below; Through description, the effect of the mutual alignment between the shape of the embodiment of the utility model such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are done further to specify to embodiment.
Embodiment 1:
(do not draw among the figure motor stator, rotor and motor windings) as shown in Figure 1; The boiler pump motor of the interior loading type conductive seal joint of present embodiment comprises electric machine casing 1; Be provided with motor stator, rotor and motor windings in the electric machine casing; Electric machine casing 1 is provided with the conductive seat 2 of tubulose, and the leading-out terminal 5 of the hard of tubulose is installed through soft bracing ring 3, steel sleeve pipe 4 in the conductive seat 2, and sleeve pipe 4 utilizes the nut 6 that is threaded onto the conductive seat end to be fixed in the conductive seat 2; The power line 7 of the motor windings in the electric machine casing 1 passes conductive seat 2 and leading-out terminal 5 successively and draws electric machine casing 1; Be arranged at intervals with two first radial direction seal rings 8 between the inwall of the outer wall of sleeve pipe 4 and conductive seat 2; Be provided with second radial direction seal ring 9 between the outer wall of the inwall of sleeve pipe 4 and leading-out terminal 5; Be provided with axial sealing ring 10 between the end face of the bottom surface of leading-out terminal 5 and bracing ring 3.
Wherein, the top of sleeve pipe 4 has flanging, and this flanging is sandwiched between nut 6 and the conductive seat 2, when nut 6 precessions, and can sleeve pipe 4 is fixing with conductive seat 2.The open top of sleeve pipe 4 is a shoulder hole, only holds the elongated portion of leading-out terminal 5 and draws, and so just leading-out terminal 5 is played position-limiting action, prevents that leading-out terminal 5 from deviating from.
The top of bracing ring 3 has flanging, and axial sealing ring 10 promptly is arranged between the bottom surface of this flanging end face and leading-out terminal 5.
Use the sealing ring of single kind than traditional boiler water circulating pump motor; What the boiler pump motor of the interior loading type conductive seal joint of present embodiment was provided with radial direction seal ring 8,9 and 10, two kinds of sealing rings of axial sealing ring simultaneously in conductive seat 2 receives force direction different, is difficult to lose efficacy simultaneously; Like this when some sealing rings lost efficacy; Remaining sealing ring can continue to play a role, and guarantees to block the seepage current, realizes insulation and sealing function reliably.
Claims (5)
1. the boiler pump motor of loading type conductive seal joint in a kind; Comprise electric machine casing; Be provided with motor stator, rotor and motor windings in the electric machine casing; Electric machine casing is provided with the conductive seat of tubulose, it is characterized in that in the said conductive seat being equipped with through bracing ring, sleeve pipe the leading-out terminal of the hard of tubulose, and the nut that said sleeve pipe utilization is threaded onto the conductive seat end is fixed in the conductive seat; The power line of said motor windings passes conductive seat and leading-out terminal successively and draws electric machine casing; Be provided with first radial direction seal ring between the outer wall of said sleeve pipe and the inwall of conductive seat; Be provided with second radial direction seal ring between the inwall of said sleeve pipe and the outer wall of leading-out terminal; Be provided with axial sealing ring between the bottom surface of said leading-out terminal and the end face of bracing ring.
2. the boiler pump motor of loading type conductive seal joint is characterized in that said bracing ring is that soft material is processed in according to claim 1, and bracing ring is clamped in the afterbody of leading-out terminal through C shape card.
3. the boiler pump motor of loading type conductive seal joint is characterized in that the inwall of said conductive seat is provided with first annular groove in according to claim 1 and 2, and said first radial direction seal ring is installed in first annular groove.
4. the boiler pump motor of loading type conductive seal joint is characterized in that said first radial direction seal ring has two at least in according to claim 3.
5. the boiler pump motor of loading type conductive seal joint is characterized in that the outer wall of said leading-out terminal is provided with second annular groove in according to claim 1 and 2, and said second radial direction seal ring is installed in second annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204520238U CN202309350U (en) | 2011-11-15 | 2011-11-15 | Furnace water pump motor with built-in conductive sealing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204520238U CN202309350U (en) | 2011-11-15 | 2011-11-15 | Furnace water pump motor with built-in conductive sealing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202309350U true CN202309350U (en) | 2012-07-04 |
Family
ID=46378162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204520238U Expired - Fee Related CN202309350U (en) | 2011-11-15 | 2011-11-15 | Furnace water pump motor with built-in conductive sealing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202309350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767048A (en) * | 2015-03-31 | 2015-07-08 | 合肥皖化电机技术开发有限责任公司 | Boiler water pump conductive contact |
-
2011
- 2011-11-15 CN CN2011204520238U patent/CN202309350U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767048A (en) * | 2015-03-31 | 2015-07-08 | 合肥皖化电机技术开发有限责任公司 | Boiler water pump conductive contact |
| CN104767048B (en) * | 2015-03-31 | 2017-10-17 | 合肥皖化电机技术开发有限责任公司 | Stove water pump conductive contact |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20171115 |