CN206571970U - A kind of mechanical seal hinders the sealing liquid circulatory system - Google Patents
A kind of mechanical seal hinders the sealing liquid circulatory system Download PDFInfo
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- CN206571970U CN206571970U CN201720281776.4U CN201720281776U CN206571970U CN 206571970 U CN206571970 U CN 206571970U CN 201720281776 U CN201720281776 U CN 201720281776U CN 206571970 U CN206571970 U CN 206571970U
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- sealing liquid
- mechanical seal
- annular seal
- resistance sealing
- collecting tank
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Abstract
The utility model is related to mechanical seal rinsing technical field, specifically provides a kind of mechanical seal resistance sealing liquid circulatory system.Its structure includes mechanical seal annular seal space, resistance sealing liquid collecting tank, circulating pump, it is characterized in that, also include cooler, filter, mechanical seal annular seal space, resistance sealing liquid collecting tank, circulating pump, cooler, filter are sequentially connected in series into circulation loop, the installation site of the resistance sealing liquid collecting tank is less than mechanical seal annular seal space, mechanical seal annular seal space entrance point, the port of export, and circulating-pump outlet end are provided with control valve.Compared with prior art, mechanical seal resistance sealing liquid circulation system design of the present utility model is reasonable, can be created conditions for the long-term operation of pump, with good application value.
Description
Technical field
The utility model is related to mechanical seal rinsing technical field, specifically provides a kind of mechanical seal resistance sealing liquid cyclic system
System.
Background technology
In the material of petroleum chemical enterprise's OIL IN LUBRICATING OIL PRODUCTION device processing, contain oil, wax, butanone, acetone, toluene, benzene, chaff
Easily crystallization separates out solid crystal particles, butanone, acetone, toluene, benzene, furfural at low temperature for the components such as aldehyde, phenol, NMP, wherein wax
Deng stronger to rubber solution, furfural easily aoxidize the acidic materials such as generation furfural acid and further oxidation coking condensation generation it is burnt
Powder, forms sour corrosion and abrasion, due to these special natures of material（Acid corrosion, solid particle are worn and torn, dissolubility is strong etc.）,
The mechanical seal for conveying the pump of such material is caused easily to leak.
In API682 seal standards, scheme 54 is pressurization double seals system, although available for conveying high temperature, containing solid
Body particle or not only high temperature but also the fluid condition containing solid particle, but it is defeated to be applied to the material in OIL IN LUBRICATING OIL PRODUCTION field all the time
Send, its reason is as follows：Scheme 54 needs to be introduced from outside into the cleaning fluid of cooling as resistance sealing liquid, and it is close that resistance sealing liquid is introduced into machinery
The annular seal space of envelope, then comes out pressure returning to external system from annular seal space, forms the circulation of one-in-and-one-out.It is dynamic in order to provide circulation
Power and medium is avoided to leak outside, the pressure of resistance sealing liquid is at least higher than mechanical seal sealing cavity pressure 0.14MPa.This may result in small
Partial resistance sealing liquid is leaked into the medium conveyed.For lube plant, if resistance sealing liquid（Typically light diesel fuel, wax
The components such as oil, water）Into in transported medium, transported medium will be polluted, generally this is not allowing or undesirable.
The content of the invention
The utility model is can be by scheme in API682 seal standards there is provided one kind for above-mentioned the deficiencies in the prior art
54 are applied to the mechanical seal resistance sealing liquid circulatory system of lube plant or other similar operating modes.
The utility model solves the technical scheme that its technical problem used：A kind of mechanical seal hinders sealing liquid cyclic system
System, including mechanical seal annular seal space, resistance sealing liquid collecting tank, circulating pump, are characterized in also including cooler, filter, machinery is close
Envelope annular seal space, resistance sealing liquid collecting tank, circulating pump, cooler, filter are sequentially connected in series into circulation loop, the resistance sealing liquid collecting tank
Installation site be less than mechanical seal annular seal space, mechanical seal annular seal space entrance point, the port of export, circulating-pump outlet end are provided with
Control valve, the pressure into the resistance sealing liquid of mechanical seal annular seal space is not more than the pressure of mechanical seal annular seal space.
Because pump is usually placed in ground, so resistance sealing liquid collecting tank is preferably mounted at below ground.
Preferably, the resistance sealing liquid circulatory system of the present utility model also includes Stress control bypass, pressure instrumentation, pressure
Power control bypass is arranged between mechanical seal annular seal space entrance point and resistance sealing liquid collecting tank, and pressure instrumentation is arranged on machinery
Annular seal space entrance point is sealed, and the pressure-control valve bypassed with Stress control is electrically connected.
Resistance sealing liquid sampling for convenience, real time inspection sealing leak situation can be set in the mechanical seal annular seal space port of export
It is equipped with bleeder.
Resistance sealing liquid is reclaimed for convenience, and recovery branch pipe can be provided with circulating-pump outlet end.
It is preferably that leakage detection sensor is provided with sandwich, interlayer that the resistance sealing liquid, which collects pot sidewall, the leakage
Liquid detection sensor is electrically connected with alarm mechanism.Leakage detection sensor can select in the prior art any one can detect
The chemical type sensor that the resistance sealing liquid composition such as light diesel fuel, wax oil, water whether there is；Alarm mechanism can use any in the prior art
A kind of sound, optical alarm circuit.
Compared to the prior art mechanical seal of the present utility model hinder the sealing liquid circulatory system, with beneficial effect following prominent
Really：
（One）The pressure for hindering sealing liquid is less than in the pressure of mechanical seal inner sealing chamber, this point and current API682
Plan54 flushing schemes are opposite.So, if mechanical seal is leaked on a small quantity, the medium of leakage enters resistance sealing liquid, will be by resistance sealing liquid
Take away, transported medium would not be polluted by so hindering sealing liquid, hinder the function of sealing liquid（Rinse, cool down etc.）Also do not change,
Condition is created for sealed long-term operation；
（Two）The installation site for hindering sealing liquid collecting tank is less than mechanical seal annular seal space, therefore, and resistance sealing liquid can be with relatively low
Pressure even normal pressure gravity flow enters resistance sealing liquid collecting tank；
（Three）Sandwich is used on the outside of resistance sealing liquid collecting tank, and leakage detection sensor is set, internal layer tank body is let out
During leakage, it can safeguard in time, it is to avoid resistance sealing liquid leakage is polluted to underground environment.
Brief description of the drawings
Accompanying drawing 1 is the schematic flow sheet that the utility model mechanical seal hinders the sealing liquid circulatory system；
Accompanying drawing 2 is resistance sealing liquid collecting tank structural representation in the resistance sealing liquid circulatory system of mechanical seal shown in Fig. 1.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as to the utility model
Restriction.
In the utility model, in the case where not making opposite explanation, the noun of locality used such as " upper and lower, left and right " is generally
Refer to the upper and lower, left and right shown in refer to the attached drawing；" inside and outside " refers to the inside and outside of the profile relative to each part in itself.
A most preferred embodiment is given below：
【Device structure】
As shown in Figure 1, the mechanical seal of the present utility model resistance sealing liquid circulatory system it is main by mechanical seal annular seal space 1,
Resistance sealing liquid collecting tank 2, circulating pump 3, cooler 4, filter 5, pressure instrumentation 18, pressure-control valve 19 are constituted.Machinery is close
Envelope annular seal space 1, resistance sealing liquid collecting tank 2, circulating pump 3, cooler 4, filter 5 are sequentially connected in series into circulation loop.Mechanical seal is close
Seal between the entrance point of chamber 1 and resistance sealing liquid collecting tank 2 provided with Stress control bypass.Pressure-control valve 19 is assemblied in Stress control bypass
On, and be electrically connected with the pressure instrumentation 18 of mechanical seal annular seal space entrance point.The port of export of mechanical seal annular seal space 1 is provided with
Bleeder 7.The port of export of circulating pump 3 is provided with recovery branch pipe 8.That hinders sealing liquid collecting tank 2 is installed on below ground, so that its position
Less than mechanical seal annular seal space 1.
Distinguish at the entrance point of mechanical seal annular seal space 1, the port of export, bleeder 7, the port of export of circulating pump 3 and recovery branch pipe 8
Provided with inlet control valve 9, discharge control valve 10, exhaust-control valve 11, circulation control valve 12, recovery control valve 13.
As shown in Figure 2, resistance sealing liquid collecting tank 2 is equipped with feed tube 14, drain pipe 15 and blow-off pipe 16, wherein, go out liquid
Pipe 15 extends to the bottom of resistance sealing liquid collecting tank 1.The side wall of resistance sealing liquid collecting tank 1 is to be provided with leakage in sandwich, and interlayer
Detection sensor 17.Leakage detection sensor 17 is connected with alarm mechanism.
【Circulation process】
Hinder sealing liquid and extract a point two-way out with circulating pump 3, all the way to recovery branch pipe 8（Used for reclaiming resistance sealing liquid, as needed
Interruption comes into operation, normal for closing）, another road sequentially passes through cooler 4 and filter 5, into mechanical seal annular seal space 1, resistance envelope
The pressure of liquid is less than the pressure of mechanical seal annular seal space 1.Hinder sealing liquid and out divide two-way from mechanical seal annular seal space 1, all the way through resistance
The gravity flow of sealing liquid return pipeline enters resistance sealing liquid collecting tank 2.Because pump is usually placed in ground, thus resistance sealing liquid return pipeline and
Resistance sealing liquid collecting tank 2 is typically mounted on below ground, can be entered with meeting resistance sealing liquid with the even normal pressure gravity flow of relatively low pressure
Hinder sealing liquid collecting tank 2.Another road enters bleeder 7.Operating personnel can be interrupted unlatching exhaust-control valve 11 as needed and check
Sealing leak situation is normal for closing.Stress control bypasses the pressure for controlling the resistance sealing liquid for entering mechanical seal annular seal space,
It is less than the pressure of mechanical seal annular seal space.
One kind of embodiment described above, simply the utility model more preferably embodiment, the skill of this area
The usual variations and alternatives that art personnel are carried out in the range of technical solutions of the utility model should all be included in of the present utility model protect
In the range of shield.
Claims (5)
1. a kind of mechanical seal hinders the sealing liquid circulatory system, including mechanical seal annular seal space, resistance sealing liquid collecting tank, circulating pump, it is special
Levy and be, in addition to cooler, filter, mechanical seal annular seal space, resistance sealing liquid collecting tank, circulating pump, cooler, filter according to
Secondary to be concatenated into circulation loop, the installation site of the resistance sealing liquid collecting tank is less than mechanical seal annular seal space, mechanical seal annular seal space
Entrance point, the port of export, circulating-pump outlet end are provided with control valve, and the pressure into the resistance sealing liquid of mechanical seal annular seal space is little
In the pressure of mechanical seal annular seal space.
2. mechanical seal according to claim 1 hinders the sealing liquid circulatory system, it is characterised in that by also including Stress control
Road, pressure instrumentation, Stress control bypass are arranged between mechanical seal annular seal space entrance point and resistance sealing liquid collecting tank, pressure
Instrumentation is arranged on mechanical seal annular seal space entrance point, and the pressure-control valve bypassed with Stress control is electrically connected.
3. mechanical seal according to claim 1 or 2 hinders the sealing liquid circulatory system, it is characterised in that mechanical seal annular seal space
The port of export is provided with bleeder.
4. mechanical seal according to claim 3 hinders the sealing liquid circulatory system, it is characterised in that circulating-pump outlet end is provided with
Reclaim branch pipe.
5. mechanical seal according to claim 4 hinders the sealing liquid circulatory system, it is characterised in that resistance sealing liquid collects pot sidewall and is
Leakage detection sensor is provided with sandwich, interlayer, the leakage detection sensor is electrically connected with alarm mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281776.4U CN206571970U (en) | 2017-03-22 | 2017-03-22 | A kind of mechanical seal hinders the sealing liquid circulatory system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281776.4U CN206571970U (en) | 2017-03-22 | 2017-03-22 | A kind of mechanical seal hinders the sealing liquid circulatory system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206571970U true CN206571970U (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720281776.4U Active CN206571970U (en) | 2017-03-22 | 2017-03-22 | A kind of mechanical seal hinders the sealing liquid circulatory system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115489A (en) * | 2018-08-02 | 2019-01-01 | 清华大学 | gear fatigue test device water cooling system |
| CN111249995A (en) * | 2018-11-30 | 2020-06-09 | 中昊晨光化工研究院有限公司 | Reaction kettle mechanical seal pressurization protection device and protection method |
| CN111677871A (en) * | 2020-06-17 | 2020-09-18 | 中国电子科技集团公司第十四研究所 | Double-channel three-level series-parallel rotary transmission mechanical sealing device |
| CN111677873A (en) * | 2020-06-17 | 2020-09-18 | 中国电子科技集团公司第十四研究所 | Double-channel totally-enclosed internal circulation mechanical sealing system |
-
2017
- 2017-03-22 CN CN201720281776.4U patent/CN206571970U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115489A (en) * | 2018-08-02 | 2019-01-01 | 清华大学 | gear fatigue test device water cooling system |
| CN111249995A (en) * | 2018-11-30 | 2020-06-09 | 中昊晨光化工研究院有限公司 | Reaction kettle mechanical seal pressurization protection device and protection method |
| CN111677871A (en) * | 2020-06-17 | 2020-09-18 | 中国电子科技集团公司第十四研究所 | Double-channel three-level series-parallel rotary transmission mechanical sealing device |
| CN111677873A (en) * | 2020-06-17 | 2020-09-18 | 中国电子科技集团公司第十四研究所 | Double-channel totally-enclosed internal circulation mechanical sealing system |
| CN111677871B (en) * | 2020-06-17 | 2023-08-29 | 中国电子科技集团公司第十四研究所 | Mechanical sealing device for double-channel three-stage series-parallel rotary transmission |
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