CN102008933A - Automatic pressure control method for mechanical seal of stirrer - Google Patents
Automatic pressure control method for mechanical seal of stirrer Download PDFInfo
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- CN102008933A CN102008933A CN2010105113915A CN201010511391A CN102008933A CN 102008933 A CN102008933 A CN 102008933A CN 2010105113915 A CN2010105113915 A CN 2010105113915A CN 201010511391 A CN201010511391 A CN 201010511391A CN 102008933 A CN102008933 A CN 102008933A
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- pressure
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- nitrogen
- adjusting valve
- sealing pot
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Abstract
The invention discloses an automatic pressure control method for mechanical seal of a stirrer. The method comprises the following steps of: changing nitrogen bottle gas supply into high-pressure nitrogen gas supply, arranging an inlet adjusting valve on a gas supply pipeline for supplying gas to an isolating liquid tank, arranging an outlet adjusting valve on a gas outlet pipeline of a mechanical seal pressure tank of a reactor, setting the pressure of the inlet adjusting valve as the sum of the pressure in the reactor and 1bar, and setting the pressure of the outlet adjusting valve as the sum of the pressure in the reactor and 3bar; when the pressure in the reactor is raised to that the pressure in the isolating liquid tank is 1bar higher than the pressure in the reactor, opening the inlet adjusting valve to introduce nitrogen into the isolating liquid tank till the pressure in the isolating liquid tank is 2.5bar higher than the pressure in the reactor; and when the pressure in the reactor is reduced to that the pressure in the isolating liquid tank is 3bar higher than the pressure in the reactor, opening the outlet adjusting valve to discharge the nitrogen from the isolating liquid tank till the pressure in the isolating liquid tank is 2.5bar higher than the pressure in the reactor. The method ensures stable pressure of the isolating liquid tank.
Description
Technical field
The present invention relates to the pressure controlled method that a kind of nitrogen pressure automatic control is used for agitator mechanical seal insulating liquid, more particularly, the present invention relates to a kind of method of utilizing internally piloted valve control nitrogen turnover pressure to be used for agitator mechanical seal insulating liquid pressure automatic control.
Background technology
At present, the mechanical seal of butyl octanol unit carbonyl synthesis reactor agitator is double mechanical seal, the pressure of insulating liquid requires to be higher than reactor pressure 1～3bar in the subsidiary sealing pot, the pressure of sealing chamber is provided by high-pressure nitrogen bottle, synthesizer pressure influence fluctuates easily outside the battery limit (BL) because operating pressure is subjected to, in case the pressure of sealing pot is lower than the pressure in the reactor, mechanical seal will damage.Particularly in the start-stop car, very easily cause the damage of mechanical seal.
Summary of the invention
The object of the present invention is to provide that a kind of small investment, operating cost are low, nitrogen consumption less, insulating liquid pressure stability, a kind of pressure automatic control of being convenient to operate be used for the method for agitator mechanical seal.
The present invention is achieved by the following technical programs.
Method of the present invention may further comprise the steps: change the nitrogen cylinder air feed into the high pressure nitrogen air feed, giving inlet adjusting valve of installation on the steam line of sealing pot air feed, and an outlet regulating valve is installed on the outlet pipe of the mechanical seal pressurized tank of reactor, adopt describedly to advance, the outlet regulating valve is controlled the turnover pressure of high pressure nitrogen respectively, the pressure of inlet adjusting valve is set to reactor pressure and adds 1bar, the pressure of outlet regulating valve is set to reactor pressure and adds 3bar, when reactor pressure is elevated to the sealing pot internal pressure than the high 1bar of reactor pressure, the inlet adjusting valve is opened to the sealing pot inflated with nitrogen until the sealing pot internal pressure than the high 2.5bar of reactor pressure, when reactor pressure was reduced to the sealing pot internal pressure than the high 3bar of reactor pressure, the outlet regulating valve was opened from sealing pot and is put nitrogen until the high 2.5bar of sealing pot pressure ratio reactor pressure.
The present invention compared with prior art has following advantage: 1, reduced investment.2, guarantee mechanical seal sealing pot pressure stability.3, automatic remote control.
Description of drawings
Accompanying drawing is the process chart that a kind of pressure automatic control of the present invention is used for the method for agitator mechanical seal.
The specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
A kind of pressure automatic control of the present invention as shown in drawings is used for the method for agitator mechanical seal, may further comprise the steps: change the nitrogen cylinder air feed into the high pressure nitrogen air feed, giving inlet adjusting valve of installation on the steam line of sealing pot air feed, and an outlet regulating valve is installed on the outlet pipe of the mechanical seal pressurized tank of reactor, adopt describedly to advance, the outlet regulating valve is controlled the turnover pressure of high pressure nitrogen respectively, the pressure of inlet adjusting valve is set to reactor pressure and adds 1bar, the pressure of outlet regulating valve is set to reactor pressure and adds 3bar, when reactor pressure is elevated to the sealing pot internal pressure than the high 1bar of reactor pressure, the inlet adjusting valve is opened to the sealing pot inflated with nitrogen until the sealing pot internal pressure than the high 2.5bar of reactor pressure, when reactor pressure was reduced to the sealing pot internal pressure than the high 3bar of reactor pressure, the outlet regulating valve was opened from sealing pot and is put nitrogen until the high 2.5bar of sealing pot pressure ratio reactor pressure.
Embodiment 1
Change the nitrogen cylinder air feed into the high pressure nitrogen air feed, giving inlet adjusting valve of installation on the steam line of sealing pot air feed, and an outlet regulating valve is installed on the outlet pipe of the mechanical seal pressurized tank of reactor, adopt describedly to advance, the outlet regulating valve is controlled the turnover pressure of high pressure nitrogen respectively, the pressure of inlet adjusting valve is set to reactor pressure and adds 1bar, the pressure of outlet regulating valve is set to reactor pressure and adds 3bar, when reactor pressure is elevated to the sealing pot internal pressure than the high 1bar of reactor pressure, the inlet adjusting valve is opened to the sealing pot inflated with nitrogen until the sealing pot internal pressure than the high 2.5bar of reactor pressure, when reactor pressure was reduced to the sealing pot internal pressure than the high 3bar of reactor pressure, the outlet regulating valve was opened from sealing pot and is put nitrogen until the high 2.5bar of sealing pot pressure ratio reactor pressure.
Through checking employing this method can guarantee mechanical seal sealing pot pressure stability and can controlling by automatic remote, guaranteed the continous-stable operation of producing.
Claims (1)
1. a pressure automatic control is used for the method for agitator mechanical seal, it is characterized in that it may further comprise the steps: change the nitrogen cylinder air feed into the high pressure nitrogen air feed, giving inlet adjusting valve of installation on the steam line of sealing pot air feed, and an outlet regulating valve is installed on the outlet pipe of the mechanical seal pressurized tank of reactor, adopt describedly to advance, the outlet regulating valve is controlled the turnover pressure of high pressure nitrogen respectively, the pressure of inlet adjusting valve is set to reactor pressure and adds 1bar, the pressure of outlet regulating valve is set to reactor pressure and adds 3bar, when reactor pressure is elevated to the sealing pot internal pressure than the high 1bar of reactor pressure, the inlet adjusting valve is opened to the sealing pot inflated with nitrogen until the sealing pot internal pressure than the high 2.5bar of reactor pressure, when reactor pressure was reduced to the sealing pot internal pressure than the high 3bar of reactor pressure, the outlet regulating valve was opened from sealing pot and is put nitrogen until the high 2.5bar of sealing pot pressure ratio reactor pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105113915A CN102008933A (en) | 2010-10-19 | 2010-10-19 | Automatic pressure control method for mechanical seal of stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105113915A CN102008933A (en) | 2010-10-19 | 2010-10-19 | Automatic pressure control method for mechanical seal of stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102008933A true CN102008933A (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105113915A Pending CN102008933A (en) | 2010-10-19 | 2010-10-19 | Automatic pressure control method for mechanical seal of stirrer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102008933A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208627Y (en) * | 1994-04-21 | 1995-09-27 | 齐鲁石油化工公司胜利炼油厂 | Gas membrane float-ring oil sealing for air compressor |
| CN2245693Y (en) * | 1995-10-10 | 1997-01-22 | 向可为 | Pressure balance shaft gland |
| CN1342847A (en) * | 2001-10-30 | 2002-04-03 | 王洪德 | Speed-reducing driver with static seal and dual cycloidal gears for reactor |
| CN101073755A (en) * | 2006-05-15 | 2007-11-21 | 华宝付 | Sided-intake sealer of agitator |
| CN201135873Y (en) * | 2007-12-18 | 2008-10-22 | 昆山密友实业有限公司 | Magnetic stirring sealing device |
-
2010
- 2010-10-19 CN CN2010105113915A patent/CN102008933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208627Y (en) * | 1994-04-21 | 1995-09-27 | 齐鲁石油化工公司胜利炼油厂 | Gas membrane float-ring oil sealing for air compressor |
| CN2245693Y (en) * | 1995-10-10 | 1997-01-22 | 向可为 | Pressure balance shaft gland |
| CN1342847A (en) * | 2001-10-30 | 2002-04-03 | 王洪德 | Speed-reducing driver with static seal and dual cycloidal gears for reactor |
| CN101073755A (en) * | 2006-05-15 | 2007-11-21 | 华宝付 | Sided-intake sealer of agitator |
| CN201135873Y (en) * | 2007-12-18 | 2008-10-22 | 昆山密友实业有限公司 | Magnetic stirring sealing device |
Non-Patent Citations (1)
| Title |
|---|
| 化工部化工设备设计技术中心站: "《机械密封新结构图册》", 31 July 1980, article "氮气瓶加压密封装置", pages: 110-111 * |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |