Gas high-low pressure is reported to the police and pressure compensating system
Technical field
The present invention relates to technology of die manufacturing field, more particularly, to a kind of gas high-low pressure warning and pressure compensating system.
Background technology
At present, the nitrogen spring of domestic use is derived from external import mostly, expensive, and domestic also several enterprise is
Start the development & production of nitrogen spring, do not form the production of specialization, industrialization, though state is compared on the nitrogen spring price of production
Outer product is cheap, the gap also very big with external product in performance.Automobile die is inseparable with nitrogen spring, the long-life
High-performance mould special nitrogen spring, have that elastic force pressure is big, small volume, high precision, elastic force steadily, life-span length and reasonable price
The features such as, alternative mechanical spring in properties of product, and there is obvious performance and price advantage.
China is in the ground zero stage to the applied research of nitrogen spring, and the nitrogen spring now studied is in automobile stamping mould
It is applied in tool, and the continuous development with auto industry, nitrogen spring has broader development prospect.According to Japan and the United States
Calculate etc. car industry level of developed countries, if can reach to China's mold services in 2015 in the proportion of auto manufacturing
40%, then the total sales volume of China's Die Manufacturing Enterprise to 2015 reach 70,000,000,000 yuan.And send out with the rapid of Die Manufacturing Enterprise
Exhibition, automobile die special nitrogen spring aggregate demand is expected at 3,000,000,000 yuan about every year at home, and increases rapidly year by year.
The traditional pressure detecting mode of nitrogen spring:1st, estimate pressure gauge numerical value;2nd, electronic pressure alarm.Nitrogen bullet
Spring, when being acted on by external force, makees elastic movement from top dead-centre to bottom dead centre, and the pressure in nitrogen spring converts from low to high, because
For movement velocity, comparatively fast and frequency is higher, and therefore ordinarily manometer is difficult to detection.Particularly when temperature raises, nitrogen spring pressure
Power can increase, if it exceeds the limit will damage weak part, is also susceptible to security incident, or Product processing is bad.Temperature
During reduction, nitrogen spring pressure reduces, and it is bad to easily cause Product processing, maintenance shut-downs.
In terms of the development of nitrogen spring, the prostatitis in the world is walked by Germany and the U.S..German FIBRO company and the U.S.
The mould nitrogen spring that DADCO company develops has been widely applied to many industrial circles.But the whole world is not also right so far
The effective ways that nitrogen spring system high-low pressure is reported to the police and compensated.And China is in the applied research of mould nitrogen spring and just rises
Step, though achieved with some achievements, the gap also very big with external product in performance, all there is same asking simultaneously
Topic:" service life of mould nitrogen spring, mould closure is highly little, and when stroke requires longer, common die nitrogen spring
Requirement cannot be met " and the problems such as " existing nitrogen spring inflator is not provided that the source gas of constant pressure ".For system
Pressure alarm and system pressure compensate and cannot realize.
Content of the invention
The present invention is to solve above-mentioned not enough problem, provides a kind of gas high-low pressure to report to the police and pressure compensating system.
For solving above-mentioned technical problem, the technical scheme is that:Gas high-low pressure is reported to the police and pressure compensating system, bag
Oil scraper case, overflow valve, gas-liquid switching controller, gas-liquid booster pump, gas three linked piece, accumulator and nitrogen spring;Gas three
Part is connected with gas-liquid booster pump, and gas-liquid booster pump is connected with fuel tank, check valve respectively, is connected between gas-liquid booster pump and fuel tank
Filter, is placed with liquid level sensor in fuel tank, check valve is connected with gas-liquid switching controller, accumulator respectively, and gas-liquid is changed
Controller is connected with overflow valve, nitrogen spring respectively, is connected with digital display hydralic pressure gauge between gas-liquid switching controller and overflow valve, overflows
Stream valve is connected with fuel tank, is connected with air gauge between gas-liquid switching controller and nitrogen spring;Gas-liquid switching controller includes holding
Lid, valve inside, oil pocket plug, piston, gas plug and body;The top of body is sealed and installed with end cap, and the inner chamber of body is close
Envelope is provided with piston, and body is divided into air cavity and sap cavity by piston, and this body sidewall connecting with air cavity is provided with valve inside, gas
Plug, this body sidewall connecting with sap cavity is provided with oil pocket plug.
Further, it is connected with gas solenoid valve between gas three linked piece and gas-liquid booster pump.
Further, the top of body is sealed and installed with end cap by sealing ring A.
Further, the inner chamber of body is sealed and installed with piston by sealing ring B, sealing ring C.
Further, body opens up installing hole.
The present invention leads to system pressure change to provide compensation and report to the police to temperature change, is turned using gas and fluid pressure
Change, gas is controlled by liquid.Compensate for the deficiency of domestic and international technology, to lifting nitrogen spring the industries such as Making mold peace
Quan Xing, stability, energy-conservation, improve product quality and reduction product cost have extremely important meaning.Meanwhile, range of application of the present invention
Relatively wide, can also expand to electronics, instrument etc. and need the field of mould special purpose spring, can simplify Design of Dies, manufacture and
Facilitate mould structure to adjust, demand is huge, can obtain preferable economic benefit in implementation process, skill is controlled to gases at high pressure
Art also has certain facilitation, and especially the signal of industrial automation being crossed and transmitting and keep the safety in production provides stable letter
Number source.
Brief description
Fig. 1 is the system schematic diagram;
Fig. 2 is the structural representation of gas-liquid switching controller.
Wherein:1. fuel tank, 2. filter, 3. liquid level sensor, 4. digital display hydralic pressure gauge, 5. overflow valve, 6. gas-liquid conversion control
Device processed, 601. end caps, 602. sealing ring A, 603. valve insides, 604. air cavitys, 605. installing holes, 606. oil pocket plugs, 607. liquid
Chamber, 608. sealing ring B, 609. sealing ring C, 610. pistons, 611. gas plugs, 612. bodies, 7. check valve, 8. gas-liquid pressure-boosting
Pump, 9. gas solenoid valve, 10. gas three linked piece, 11. accumulators, 12. nitrogen springs, 13. air gauges.
Specific embodiment
As shown in Figure 1 and Figure 2, gas high-low pressure is reported to the police and pressure compensating system, including fuel tank 1, overflow valve 5, gas-liquid conversion
Controller 6, gas-liquid booster pump 8, gas three linked piece 10, accumulator 11 and nitrogen spring 12;Gas three linked piece 10 and gas-liquid pressure-boosting
Pump 8 be connected, be connected with gas solenoid valve 9 between gas three linked piece 10 and gas-liquid booster pump 8, gas-liquid booster pump 8 respectively with fuel tank
1st, check valve 7 is connected, and is connected with filter 2, is placed with liquid level sensor 3 in fuel tank 1 between gas-liquid booster pump 8 and fuel tank 1, single
Be connected with gas-liquid switching controller 6, accumulator 11 respectively to valve 7, accumulator 11 be set to the voltage stabilizing of nitrogen spring 12 and
In pressure limit temperature change protection, also there are shock-absorbing functions, to nitrogen spring 12 in unexpected abnormality state from protection make
With;Gas-liquid switching controller 6 is connected with overflow valve 5, nitrogen spring 12 respectively, connects between gas-liquid switching controller 6 and overflow valve 5
It is connected to digital display hydralic pressure gauge 4, overflow valve 5 is connected with fuel tank 1, is connected with air pressure between gas-liquid switching controller 6 and nitrogen spring 12
Table 13;Gas-liquid switching controller 6 includes end cap 601, valve inside 603, oil pocket plug 606, piston 610, gas plug 611 and basis
Body 612;The top of body 612 is sealed and installed with end cap 601 by sealing ring A602, and the inner chamber of body 612 passes through sealing ring
B608, sealing ring C609 are sealed and installed with piston 610, and body 612 is divided into air cavity 604 and sap cavity 607 by piston 610, with air cavity
On the body 612 side wall of 604 connections, valve inside 603, gas plug 611 are installed, the body 612 side wall connecting with sap cavity 607
On oil pocket plug 606 is installed, body 612 opens up installing hole 605, compressed air suits in air cavity 604, compressed gas are passed through
Pipeline is connected with nitrogen spring 12.When operating ambient temperature raises or working state of system is abnormal, system pressure raises, air cavity
Pressure is passed to the hydraulic pressure in sap cavity 607 by the gas in 604 by piston 610, and hydraulic pressure increase first supplements to accumulator
11, if accumulator 11 is full, then by overflow valve 5, hydraulic oil is discharged in fuel tank 1, thus gas volume while oil pressure reduces
Reduce, reduced pressure.When operating ambient temperature reduces or working state of system is abnormal, system pressure reduces, in air cavity 604
Air pressure reduces, and accumulator 11 supplies hydraulic pressure into sap cavity 607, and when the hydraulic pressure in accumulator 11 is not enough, gas-liquid booster pump 8 starts
Work, sap cavity 607 passes through piston 610 by pressure transmission to air cavity 604, air cavity 604 again by pressure transmission to nitrogen spring 12, directly
Normal to system pressure.If system gas leakage or exception, gas-liquid booster pump 8 meeting continuous firing, lead to fuel tank 1 liquid level to decline, under
When dropping to alert locations, liquid level sensor 3 will provide alarm signal, thus ensureing the safety and stability of system.
Staple market is positioned die casting producer at home and abroad by the present invention.China as world car production and marketing first big country,
Automobile pollution is also expected to the whole world first, and the total sales volume of China's die industry to 2015 reaches 70,000,000,000 yuan.When domestic automobile
The opportunity of mould industry fast development, captures domestic market, obtains certain market share ratio.This Project Product is except application
It is also possible to be used in electronics industry, measurement instrument industry, light industry and five metals industry etc. in automobile die.Present invention contemplates that long-term fix a price
For 16000 yuan/set, the following continuous improvement with manufacture level, also will be more widely used, wide market.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.