CN205079910U - High speed centrifugation pump mechanical seal leak test instrument - Google Patents
High speed centrifugation pump mechanical seal leak test instrument Download PDFInfo
- Publication number
- CN205079910U CN205079910U CN201520798233.0U CN201520798233U CN205079910U CN 205079910 U CN205079910 U CN 205079910U CN 201520798233 U CN201520798233 U CN 201520798233U CN 205079910 U CN205079910 U CN 205079910U
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- China
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- cavity
- cylindrical cavity
- rotating shaft
- rotating ring
- leak test
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Abstract
The utility model relates to a leakproofness testing tool field discloses a high speed centrifugation pump mechanical seal leak test instrument, include the cavity, be fixed in the bottom of cavity bottom, locate pivot in the cavity, overlap in change epaxial bearing and overlap in changeing epaxial rotating ring gland, be equipped with circle pillar cavity and down round pillar cavity in the cavity, go up circle pillar cavity and cavity up end intercommunication, terminal surface intercommunication under round pillar cavity and the cavity is upward made plausible pillar cavity and is communicated with each other just coaxially with lower circle pillar cavity down, just the pivot was coaxial with last round pillar cavity during circle pillar cavity and down round pillar cavity were located in the pivot, bearing position is under in the round pillar cavity, the position that lies in circle pillar cavity in the pivot is equipped with collar flange, the rotating ring gland is located collar flange's top does not just contact with collar flange, still be equipped with air inlet and manometer on the lateral wall of cavity, air inlet and manometer all communicate with each other with last round pillar cavity. The utility model discloses the test accuracy is good, with low costs.
Description
Technical field
The utility model relates to performing leak test field of tool, particularly relates to a kind of high speed centrifugation pump mechanical sealing leak test instrument.
Background technology
Express pump, belongs to the one of centrifugal pump.Basic functional principle and the Ordinary Centrifugal Pumps of express pump are similar, difference utilizes the accelerating function of gearbox (one-level speedup or secondary speedup) to make running wheel obtain the working speed being several times as much as Ordinary Centrifugal Pumps impeller, it utilizes improves wheel speed, strengthen the fluid line speed on impeller outer edge, reach high-lift object, eliminate the shortcoming of most of multistage pump.Express pump has function admirable at low-flow high-lift parameter area (low-specific-speed), and the feature that reliability is high and the life-span is long, is used widely at petroleum chemical industry.
Machine seals, and full name mechanical seal, it is a kind of with solving the device sealed between turning axle and body.By at least one pair of end face perpendicular to rotation keep under hydrodynamic pressure and the effect of compensation mechanism elastic force and the cooperation of auxiliary seal fit and relative sliding and form anti-fluid leak device, be usually used in the sealing of the rotary type fluid machines such as pump, compressor, reaction stirred tank.It is a kind of general gland seal device.The machine envelope that express pump uses is the many coiling machine envelopes of single end face, and it is made up of rotating ring and stationary ring two parts.When machine is enclosed in operation in pump, can because the reason such as vibration, assembly precision, medium impurity, bolt pretightening of pump, the sealing of destruction machine envelope causes machine to seal leakage.
What in pump, we usually cannot differentiate machine envelope is that static seal leaks on earth, or motive seal is leaked, some machine envelopes are not damaged, worry machine envelope leakaging cause after cleaning installs does not solve and causes doing over again, therefore the machine that each maintenance all will more renew seals, some good machine dare not be used after being enclosed in and changing again, creates very large waste, adds production cost.
Generally current machine envelope pressure test tool, can only testing machine seal dynamic and static ring geo-stationary state under the force value of bearing, the motion of simulation pump can not realize the relative motion of dynamic and static ring, therefore can accurately not react the quality that machine is sealed sealing property.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of high speed centrifugation pump mechanical sealing leak test instrument.Leak test instrument of the present utility model can detect intuitively, exactly high-speed centrifugal pump machine envelope leakage situation, reduce because of machine envelope quality problems produce reprocess phenomenon.Meanwhile, be convenient to repairing the old and utilizing scraps of mechanical seal, improve the utilization rate of old machine envelope, for company reduces maintenance cost, reduce costs.
Concrete technical scheme of the present utility model is: a kind of high speed centrifugation pump mechanical sealing leak test instrument, comprises cavity, is fixed on the bottom of described cavity bottom, the rotating shaft be located in cavity, is placed on the bearing in described rotating shaft and is placed on the rotating ring gland in rotating shaft.Be provided with cylindrical cavity and lower cylindrical cavity in described cavity, described upper cylindrical cavity is communicated with cavity upper surface, and described lower cylindrical cavity is communicated with cavity lower surface, and upper cylindrical cavity communicates with lower cylindrical cavity and coaxial; Described rotating shaft is located in cylindrical cavity and lower cylindrical cavity and rotating shaft is coaxial with upper cylindrical cavity, described bearing is positioned at lower cylindrical cavity, the position described rotating shaft being positioned at cylindrical cavity is provided with collar flange, and described rotating ring gland is positioned at the top of described collar flange and does not contact with collar flange; The sidewall of described cavity is also provided with air intake opening and tensimeter, and described air intake opening and tensimeter all communicate with upper cylindrical cavity.
The utility model designs and produces according to the running status of machine envelope in pump and principle of work, in the test carrying out machine envelope leak test, can accomplish that real reducing machine seals the running status of dynamic and static ring substantially the same with the state in pump.Rotating ring is arranged on the collar flange of rotating shaft, rotating ring is pushed down by rotating ring gland, stationary ring is covered on rotating ring and cavity again, be bolted between stationary ring and cavity, the cavity that after being sealed envelope by machine, formation one is airtight, by the pressurized air (bearing pressure according to machine envelope) of air intake opening input certain pressure in cavity, then covers with water, by turning axle, the method for observing bubble carrys out the sealing property of checking machine envelope.
When structural design in order to ensure the decrement of machine envelope, limit the rotating ring upper surface distance to cavity upper surface according to the requirement of machine envelope, this makes it possible to real analog machine and be enclosed in state in pump.
The utility model is after having designed and produced, the machine envelope at every turn pulled down can observe the leakage situation of machine envelope intuitively after overtesting, have found the leakaging cause of machine envelope like this, be the problem of sealing surface or the defect of stationary ring inner O type circle, thus repair.And new machine envelope or the machine envelope after repairing, after overtesting, finding that sealing is all right, we just can be relieved use on pump, " the once fixing " rate of good not only increasing maintenance like this also avoid the doing over again of causing because of machine envelope poor sealing, save the repair time, and the recycling of old machine envelope is especially for company has saved the cost of overhaul, accomplishes to save energy and reduce the cost.
As preferably, the diameter of described upper cylindrical cavity is greater than the diameter of described lower cylindrical cavity.
As preferably, described rotating shaft is overlapped and has two bearings, and two bearings are all positioned at described lower cylindrical cavity.
As preferably, in described rotating shaft, also cover has bearing spacer, and described bearing spacer is located between described two bearings.
The utility model specially increases the length of rotating shaft bottom when design, adopt dual bearing structure, bearing spacer is also add between two bearings, which adds the stability of rotating shaft, so that rotating ring and rotating shaft can be stable relative rotation, guarantee the good contact of sealing surface between dynamic and static ring.
As preferably, the upper surface of described collar flange is provided with O type ring recess, is provided with O RunddichtringO in described O type ring recess.
The collar flange of rotating shaft is established O type ring recess, guarantee the sealing bottom rotating ring and between rotating shaft, make to be formed in cavity a good confined space.
As preferably, in described rotating shaft, also cover has rotating ring pad, and described rotating ring pad is between described collar flange and rotating ring gland, and rotating ring pad contacts with collar flange, rotating ring pad with move gland and do not contact.
The difference of the rotating ring thickness that some machine seals is considered, so devise the rotating ring pad of corresponding size under the prerequisite guaranteeing machine envelope decrement when design.Therefore the design can be applied to the express pump machine envelope leak test test of multiple different rotating ring size.
As preferably, the upper surface of described rotating ring pad is provided with O type ring recess.
O type ring recess on rotating ring pad is identical with the O type ring recess effect on collar flange.
As preferably, the upper end of described rotating shaft is higher than the upper surface of described cavity.
Be compared with the prior art, the beneficial effects of the utility model are: leak test instrument of the present utility model can detect intuitively, exactly high-speed centrifugal pump machine envelope leakage situation, reduce because of machine envelope quality problems produce reprocess phenomenon.Meanwhile, be convenient to repairing the old and utilizing scraps of mechanical seal, improve the utilization rate of old machine envelope, for company reduces maintenance cost, reduce costs.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is a kind of structural representation of cavity in the utility model;
Fig. 4 is a kind of structural representation of the utility model shaft;
Fig. 5 is a kind of structural representation of rotating ring pad in the utility model.
Reference numeral is: cavity 1, bottom 2, rotating shaft 3, bearing 4, rotating ring gland 5, tensimeter 6, bearing spacer 7, O type ring recess 8, rotating ring pad 9, upper cylindrical cavity 11, lower cylindrical cavity 12, air intake opening 13, stationary ring 14, rotating ring 15, collar flange 31.
Embodiment
Below in conjunction with embodiment, the utility model will be further described.Device, syndeton and method involved in the utility model, if without refering in particular to, be device well known in the art, syndeton and method.
Embodiment 1
As shown in Figure 1: a kind of high speed centrifugation pump mechanical sealing leak test instrument, comprise cavity 1, be fixed on the bottom 2 of described cavity bottom, the rotating shaft 3 be located in cavity, the rotating ring gland 5 that is placed on two bearings 4 in described rotating shaft and is placed in rotating shaft.
As shown in Figure 3, be provided with cylindrical cavity 11 and lower cylindrical cavity 12 in described cavity, described upper cylindrical cavity is communicated with cavity upper surface, and described lower cylindrical cavity is communicated with cavity lower surface, upper cylindrical cavity communicates with lower cylindrical cavity and coaxial, and the diameter of upper cylindrical cavity is greater than the diameter of lower cylindrical cavity.
Described rotating shaft is located in cylindrical cavity and lower cylindrical cavity and rotating shaft is coaxial with upper cylindrical cavity, and the upper end of rotating shaft is higher than the upper surface of described cavity.Described bearing is positioned at lower cylindrical cavity, and in rotating shaft, also cover has bearing spacer 7, and described bearing spacer is located between two bearings.As shown in Figure 4, the position described rotating shaft being positioned at cylindrical cavity is provided with collar flange 31, and described rotating ring gland is positioned at the top of described collar flange and does not contact with collar flange.The upper surface of collar flange is provided with O type ring recess 8, is provided with O RunddichtringO in described O type ring recess.
The sidewall of described cavity is also provided with air intake opening 13 and tensimeter 6, described air intake opening and tensimeter all communicate with upper cylindrical cavity.
The utility model, in the test carrying out machine envelope leak test, can accomplish that real reducing machine seals the running status of dynamic and static ring substantially the same with the state in pump.Rotating ring 15 is arranged on the collar flange of rotating shaft, rotating ring is pushed down by rotating ring gland, again stationary ring 14 is covered on rotating ring and cavity, be bolted between stationary ring and cavity, the cavity that after being sealed envelope by machine, formation one is airtight, by the pressurized air (bearing pressure according to machine envelope) of air intake opening input certain pressure in cavity, then covers with water, by turning axle, the method for observing bubble carrys out the sealing property of checking machine envelope.
Embodiment 2
As shown in Figure 2: a kind of high speed centrifugation pump mechanical sealing leak test instrument, comprise cavity 1, be fixed on the bottom 2 of described cavity bottom, the rotating shaft 3 be located in cavity, the rotating ring gland 5 that is placed on two bearings 4 in described rotating shaft and is placed in rotating shaft.
As shown in Figure 3, be provided with cylindrical cavity 11 and lower cylindrical cavity 12 in described cavity, described upper cylindrical cavity is communicated with cavity upper surface, and described lower cylindrical cavity is communicated with cavity lower surface, upper cylindrical cavity communicates with lower cylindrical cavity and coaxial, and the diameter of upper cylindrical cavity is greater than the diameter of lower cylindrical cavity.
Described rotating shaft is located in cylindrical cavity and lower cylindrical cavity and rotating shaft is coaxial with upper cylindrical cavity, and the upper end of rotating shaft is higher than the upper surface of described cavity.Described bearing is positioned at lower cylindrical cavity, and in rotating shaft, also cover has bearing spacer 7, and described bearing spacer is located between two bearings.As shown in Figure 4, the position described rotating shaft being positioned at cylindrical cavity is provided with collar flange 31.In described rotating shaft, also cover has rotating ring pad 9, and described rotating ring pad is between described collar flange and rotating ring gland, and rotating ring pad contacts with collar flange, rotating ring pad with move gland and do not contact.As shown in Figure 5, the upper surface of described rotating ring pad is provided with O type ring recess 8, is provided with O RunddichtringO in described O type ring recess.
The sidewall of described cavity is also provided with air intake opening 13 and tensimeter 6, described air intake opening and tensimeter all communicate with upper cylindrical cavity.
The utility model, in the test carrying out machine envelope leak test, can accomplish that real reducing machine seals the running status of dynamic and static ring substantially the same with the state in pump.Rotating ring 15 is arranged on rotating ring pad, rotating ring is pushed down by rotating ring gland, again stationary ring 14 is covered on rotating ring and cavity, be bolted between stationary ring and cavity, the cavity that after being sealed envelope by machine, formation one is airtight, by the pressurized air (bearing pressure according to machine envelope) of air intake opening input certain pressure in cavity, then covers with water, by turning axle, the method for observing bubble carrys out the sealing property of checking machine envelope.
Embodiment 3
Embodiment 3 is with the difference of embodiment 1, and embodiment 3 is not containing bearing spacer.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong to the protection domain of technical solutions of the utility model.
Claims (8)
1. a high speed centrifugation pump mechanical sealing leak test instrument, is characterized in that: comprise cavity (1), be fixed on the bottom (2) of described cavity bottom, the rotating shaft (3) be located in cavity, the rotating ring gland (5) that is placed on the bearing (4) in described rotating shaft and is placed in rotating shaft; Be provided with cylindrical cavity (11) and lower cylindrical cavity (12) in described cavity, described upper cylindrical cavity is communicated with cavity upper surface, and described lower cylindrical cavity is communicated with cavity lower surface, and upper cylindrical cavity communicates with lower cylindrical cavity and coaxial; Described rotating shaft is located in cylindrical cavity and lower cylindrical cavity and rotating shaft is coaxial with upper cylindrical cavity, described bearing is positioned at lower cylindrical cavity, the position described rotating shaft being positioned at cylindrical cavity is provided with collar flange (31), and described rotating ring gland is positioned at the top of described collar flange and does not contact with collar flange; The sidewall of described cavity is also provided with air intake opening (13) and tensimeter (6), described air intake opening and tensimeter all communicate with upper cylindrical cavity.
2. high speed centrifugation pump mechanical sealing leak test instrument as claimed in claim 1, it is characterized in that, the diameter of described upper cylindrical cavity is greater than the diameter of described lower cylindrical cavity.
3. high speed centrifugation pump mechanical sealing leak test instrument as claimed in claim 1, is characterized in that, in described rotating shaft, cover has two bearings, and two bearings are all positioned at described lower cylindrical cavity.
4. high speed centrifugation pump mechanical sealing leak test instrument as claimed in claim 3, is characterized in that, in described rotating shaft, also cover has bearing spacer (7), and described bearing spacer is located between described two bearings.
5. high speed centrifugation pump mechanical sealing leak test instrument as claimed in claim 1, it is characterized in that, the upper surface of described collar flange is provided with O type ring recess (8), is provided with O RunddichtringO in described O type ring recess.
6. the high speed centrifugation pump mechanical sealing leak test instrument as described in claim 1 or 5, it is characterized in that, in described rotating shaft, also cover has rotating ring pad (9), described rotating ring pad is between described collar flange and rotating ring gland, and rotating ring pad contacts with collar flange, rotating ring pad with move gland and do not contact.
7. high speed centrifugation pump mechanical sealing leak test instrument as claimed in claim 6, it is characterized in that, the upper surface of described rotating ring pad is provided with O type ring recess (8).
8. high speed centrifugation pump mechanical sealing leak test instrument as claimed in claim 1, is characterized in that, the upper end of described rotating shaft is higher than the upper surface of described cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798233.0U CN205079910U (en) | 2015-10-15 | 2015-10-15 | High speed centrifugation pump mechanical seal leak test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520798233.0U CN205079910U (en) | 2015-10-15 | 2015-10-15 | High speed centrifugation pump mechanical seal leak test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205079910U true CN205079910U (en) | 2016-03-09 |
Family
ID=55432310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520798233.0U Expired - Fee Related CN205079910U (en) | 2015-10-15 | 2015-10-15 | High speed centrifugation pump mechanical seal leak test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205079910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525631A (en) * | 2017-10-23 | 2017-12-29 | 广州凯里莱电气机械有限公司 | A kind of air-tightness static pressure testing device of rotating ring compensation integrated mechanical sealing |
-
2015
- 2015-10-15 CN CN201520798233.0U patent/CN205079910U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525631A (en) * | 2017-10-23 | 2017-12-29 | 广州凯里莱电气机械有限公司 | A kind of air-tightness static pressure testing device of rotating ring compensation integrated mechanical sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 324100 Jiangshan City, Zhejiang Province East Star Road, No. 38 Patentee after: Zhejiang traffic Polytron Technologies Inc Address before: 324100 Jingxing Road, Jingxing Road, Jiangshan City, Quzhou, Zhejiang Province, No. 38 Patentee before: Jiangshan Chemical Co., Ltd., Zhejiang |
|
| 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: 20160309 Termination date: 20201015 |