CN109775166A - Nitrogen sealing system for die heater oil tank - Google Patents
Nitrogen sealing system for die heater oil tank Download PDFInfo
- Publication number
- CN109775166A CN109775166A CN201910013308.2A CN201910013308A CN109775166A CN 109775166 A CN109775166 A CN 109775166A CN 201910013308 A CN201910013308 A CN 201910013308A CN 109775166 A CN109775166 A CN 109775166A
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- CN
- China
- Prior art keywords
- oil tank
- solenoid valve
- pressure difference
- die heater
- air inlet
- 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.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 42
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 230000007717 exclusion Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 67
- 230000001960 triggered effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention discloses a kind of nitrogen sealing systems for die heater oil tank, comprising: oil tank, the top of oil tank are equipped with repairing mouth, and the bottom of oil tank is equipped with oil outlet, and the side wall of oil tank is equipped with collection port and liquidometer.The first pressure difference switch, the second pressure difference switch, pressure gauge and safety relief valve are additionally provided at the top of oil tank, the first pressure difference switch and the second pressure difference switch are electrically connected with the electric cabinet of die heater.The side wall of oil tank is additionally provided with exhaust outlet, is equipped with the first solenoid valve in exhaust outlet, the first solenoid valve is electrically connected with electric cabinet.The side wall of oil tank is additionally provided with air inlet, and air inlet is connect with external source nitrogen, and second solenoid valve is equipped in air inlet, and second solenoid valve is electrically connected with electric cabinet.Beneficial effects of the present invention: the service life of conduction oil can be extended effectively by high temperature heat conductive oil and air exclusion；More accurate and system the operating pressure of temperature control is more stable；Air pressure and nitrogen amount Automatic Control can be achieved.
Description
Technical field
The present invention relates to the oil tank technical field of sealing technology of die heater, in particular to a kind of nitrogen for die heater oil tank seals
System.
Background technique
Die heater controls temperature mistake during copper-clad plate compression moulding, and to chemical reaction kettle and special steel glass etc.
Cheng Zhong, it is desirable that it is higher and higher to the thermally conductive oil temperature used in die heater, and if the temperature of Mo Wennei conduction oil is higher, make
Can all have a great impact with performance and service life.For conduction oil in low-temperature working, operation viscosity is low, and heat conductivity is good, boiling
Point is higher, but in hot operation, easily oxidation, volatilization and coking is contacted with air, to greatly reduce thermally conductive
The service life of oil.Existing die heater is all open type and semi-enclosed state to the graviation tank of die heater system repairing,
All cannot the oxidation of conduction oil easily be caused, is reduced the service life completely and air exclusion.
Summary of the invention
In view of the problems of the existing technology, it is close to be to provide a kind of nitrogen for die heater oil tank for the main object of the present invention
Envelope system, it is intended to solve the problems, such as that existing oil tank sealing system cannot completely cut off completely conduction oil with air.
To achieve the above object, the nitrogen sealing system proposed by the present invention for die heater oil tank, comprising: oil tank, oil tank
Top be equipped with repairing mouth, the bottom of oil tank is equipped with oil outlet, and the side wall of oil tank is equipped with collection port and liquidometer.The top of oil tank
It is additionally provided with the first pressure difference switch, the second pressure difference switch, pressure gauge and safety relief valve, the first pressure difference switch and the second pressure difference switch
It is electrically connected with the electric cabinet of die heater.The side wall of oil tank is additionally provided with exhaust outlet, and the first solenoid valve, the first electricity are equipped in exhaust outlet
Magnet valve is electrically connected with electric cabinet.The side wall of oil tank is additionally provided with air inlet, and air inlet is connect with external source nitrogen, and in air inlet
Equipped with second solenoid valve, second solenoid valve is electrically connected with electric cabinet.
Preferably, first by-passing valve in parallel with the first solenoid valve is additionally provided in exhaust outlet.
Preferably, second by-passing valve in parallel with second solenoid valve is equipped in air inlet.
Preferably, third pressure difference switch is additionally provided in air inlet, third pressure difference switch is arranged in second solenoid valve and second
The inlet end of by-passing valve.
Preferably, liquid level is calculated as magnetic double level gauge.
Compared with prior art, the beneficial effects of the present invention are: can prolong effectively by high temperature heat conductive oil and air exclusion
The service life of long conduction oil；More accurate and system the operating pressure of temperature control is more stable；Air pressure can be achieved and nitrogen amount is complete
It automatically controls.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is structural schematic diagram of the present invention for one embodiment of nitrogen sealing system of die heater oil tank；
The object of the invention is realized, the embodiments will be further described with reference to the accompanying drawings for functional characteristics and advantage.
Specific embodiment
The present invention proposes a kind of nitrogen sealing system for die heater oil tank.
Referring to Fig.1, Fig. 1 is structural schematic diagram of the present invention for one embodiment of nitrogen sealing system of die heater oil tank.
As shown in Figure 1, in embodiments of the present invention, this is used for the nitrogen sealing system of die heater oil tank, comprising: oil tank 1, oil
The top of tank 1 is equipped with repairing mouth, and the bottom of oil tank 1 is equipped with oil outlet 2, and the side wall of oil tank 1 is equipped with collection port 3 and liquidometer 4.Work
When making, oil tank 1 is equipped with the ball valve 5 for preventing conduction oil from flowing back by the repairing into oil tank 1 of repairing mouth, and in repairing mouth, leads to
Oil outlet 2 is crossed to die heater fuel feeding.It is connect by collection port 3 with the expansion cylinder oil spilling mouth pipe of die heater, for recycling expansion cylinder
Interior oil vapour, and the liquid level in oil tank 1 is detected by liquidometer 4.
The top of oil tank 1 is additionally provided with the first pressure difference switch 6, the second pressure difference switch 7, pressure gauge 8 and safety relief valve 9, the
One pressure difference switch 6 and the second pressure difference switch 7 are electrically connected with the electric cabinet of die heater 10, the first pressure difference switch 6 and the second pressure difference
Whether the pressure value that switch 7 is used to detect nitrogen in oil tank 1 exceeds the preset pressure value of electric cabinet 10 of die heater, pressure gauge 8
For the pressure value in real-time monitoring oil tank 1, safety relief valve 9 is used for 1 exhaust pressure relief of oil tank, to prevent pressure in oil tank 1 super
The safe pressure value that oil tank 1 is born out.
The side wall of oil tank 1 is additionally provided with exhaust outlet 11, is equipped with the first solenoid valve 12, the first solenoid valve 12 in the exhaust outlet 11
It is electrically connected with the electric cabinet 10 of die heater.The side wall of oil tank 1 is additionally provided with air inlet 13, and air inlet 13 and external source nitrogen connect
It connects, and is equipped with second solenoid valve 14 in air inlet 13, second solenoid valve 14 is electrically connected with the electric cabinet 10 of die heater.When work,
The electric cabinet 10 of die heater is preset with the high-pressure value and triggering 7 work of the second pressure difference switch of triggering the first pressure difference switch 6 work
The low pressure value of work.When the pressure in oil tank 1 is higher than preset high-pressure value, the first pressure difference switch 6 is triggered, automatically controlled
Case 10 controls the first solenoid valve 12 conducting in exhaust outlet 11, and the extra pressure in oil tank 1 is discharged by exhaust outlet 11.Work as oil
When pressure in tank 1 is lower than preset low pressure value, the second pressure difference switch 7 is triggered, and electric cabinet 10 controls in air inlet 13
Second solenoid valve 14 be connected, source nitrogen supplements nitrogen into oil tank 1 by air inlet 13.
Specifically, in the present embodiment, it is the pressure for balancing both ends when the first solenoid valve 12 is opened, is also set in exhaust outlet 11
There is first by-passing valve 15 in parallel with the first solenoid valve 12.
Specifically, in the present embodiment, it is the pressure for balancing both ends when second solenoid valve 14 is opened, is equipped in air inlet 13
Second by-passing valve 16 in parallel with second solenoid valve 14.
The working principle of technical solution of the present invention:
Before work, the first solenoid valve 12 in the second solenoid valve 14 and exhaust outlet 11 in air inlet 13 is both turned on, nitrogen
Source inputs nitrogen into oil tank 1 through air inlet 13, and the air in oil tank 1 is discharged by exhaust outlet 11, until liquid in oil tank 1
Face is completely filled with nitrogen, and realization completely cuts off high temperature heat conductive oil with air completely.
When work, since temperature constantly increases, the volume expansion of conduction oil leads to nitrogen in oil tank 1 for conduction oil in oil tank 1
Atmospheric pressure increases, and when the pressure in oil tank 1 is higher than 10 preset high-pressure value of electric cabinet, the first pressure difference switch 6 is triggered,
Electric cabinet 10 controls the first solenoid valve 12 conducting in exhaust outlet 11, and the extra pressure in oil tank 1 is discharged by exhaust outlet 11.
When stopping working or switching to low-temperature working by high temperature, if the pressure in oil tank 1 is lower than the preset low pressure value of electric cabinet 10
When, the second pressure difference switch 7 is triggered, electric cabinet 10 control air inlet 13 in second solenoid valve 14 be connected, source nitrogen by into
Port 13 supplements nitrogen into oil tank 1, to realize that the conduction oil in oil tank 1 also completely cuts off with air completely during the work time.
Compared with prior art, the beneficial effects of the present invention are: can prolong effectively by high temperature heat conductive oil and air exclusion
The service life of long conduction oil；More accurate and system the operating pressure of temperature control is more stable；Air pressure can be achieved and nitrogen amount is complete
It automatically controls.
Preferably, in the present embodiment, pressure when nitrogen is supplemented, to nitrogen sealing system for convenience of detection source nitrogen with true
Protecting source nitrogen has enough pressure to add in nitrogen sealing system, and third pressure difference switch 17, third pressure are additionally provided in air inlet 13
The inlet end of second solenoid valve 14 and the second by-passing valve 16 is arranged in difference switch 17.When third pressure difference switch 17 detects source nitrogen
Pressure when supplementing nitrogen to nitrogen sealing system is less than setting value, illustrates that source nitrogen is in nitrogen deficiency or nitrogen-free state, at this time
Warning device can issue warning note, and staff is prompted to replace source nitrogen.
Preferably, in the present embodiment, for convenience of the case where intuitively checking oil level in oil tank 1, liquidometer 4 is magnetic turning plate
Liquidometer 4.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (5)
1. a kind of nitrogen sealing system for die heater oil tank, comprising: oil tank, the top of the oil tank is equipped with repairing mouth, described
The bottom of oil tank is equipped with oil outlet, and the side wall of the oil tank is equipped with collection port and liquidometer；It is characterized in that, the top of the oil tank
Portion is additionally provided with the first pressure difference switch, the second pressure difference switch, pressure gauge and safety relief valve, first pressure difference switch and described
Two pressure difference switches are electrically connected with the electric cabinet of die heater；The side wall of the oil tank is additionally provided with exhaust outlet, sets in the exhaust outlet
There is the first solenoid valve, first solenoid valve is electrically connected with the electric cabinet；The side wall of the oil tank is additionally provided with air inlet, described
Air inlet is connect with external source nitrogen, and second solenoid valve, the second solenoid valve and the electricity are equipped in the air inlet
Control case electrical connection.
2. being used for the nitrogen sealing system of die heater oil tank as described in claim 1, which is characterized in that also set in the exhaust outlet
There is first by-passing valve in parallel with first solenoid valve.
3. being used for the nitrogen sealing system of die heater oil tank as described in claim 1, which is characterized in that be equipped in the air inlet
Second by-passing valve in parallel with the second solenoid valve.
4. being used for the nitrogen sealing system of die heater oil tank as described in claim 1, which is characterized in that also set in the air inlet
There is third pressure difference switch, the inlet end of the second solenoid valve and the second by-passing valve is arranged in the third pressure difference switch.
5. the nitrogen sealing system according to any one of claims 1-4 for die heater oil tank, which is characterized in that the liquid level
It is calculated as magnetic double level gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013308.2A CN109775166A (en) | 2019-01-07 | 2019-01-07 | Nitrogen sealing system for die heater oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013308.2A CN109775166A (en) | 2019-01-07 | 2019-01-07 | Nitrogen sealing system for die heater oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109775166A true CN109775166A (en) | 2019-05-21 |
Family
ID=66499940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910013308.2A Pending CN109775166A (en) | 2019-01-07 | 2019-01-07 | Nitrogen sealing system for die heater oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109775166A (en) |
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2019
- 2019-01-07 CN CN201910013308.2A patent/CN109775166A/en active Pending
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