Background technology
In the commercial production, when having a lot of products to store in storage tank, need unreactable gas such as gases such as nitrogen, argon gas to seal, make it not contact with ambient atmos, avoid product to be polluted, the waste gas of Pai Chuing also need be delivered to exhaust-gas treatment simultaneously.The sealing means that adopts mostly is greatly on unreactable gas is responsible for self-contained pressure regulator is set at present, the storage tank exhausr port connects liquid seal device, the liquid seal device freeing pipe is connected to emissions control system, this shortcoming that exists with the tank structure of inert gas seal has: be subjected to the influence of material charging and discharge velocity, the tank inner pressure fluctuation is bigger; When the storage tank discharge velocity was crossed piece, pressure-modulation valve tonifying Qi deficiency can cause and produce negative pressure in the storage tank, causes ambient atmos to enter storage tank internal contamination product; Exhaust pipe mostly is negative pressure, the unreactable gas bad consumption.
Summary of the invention
The technical matters that the utility model mainly solves is, provide a kind of safe and reliable, can effectively guarantee the tank inner pressure balance, reduce the tank structure with inert gas seal of unreactable gas consumption, reduce the production run cost.
Technical solutions of the utility model: it comprises one or more storage tank, on storage tank, be connected with unreactable gas connection pipe and storage tank freeing pipe, the storage tank freeing pipe is connected with liquid seal device, on liquid seal device, offer and emissions control system bonded assembly freeing pipe, be provided with the inert gas seal valve on the unreactable gas connection pipe, the storage tank freeing pipe is provided with breathing valve.
The storage tank freeing pipe is plugged on the bottom of liquid seal device.
Compared with the prior art, the present invention connects breathing valve by be provided with the inert gas seal valve on the unreactable gas connection pipe on the storage tank freeing pipe, adopts the tank structure of such inert gas seal to have the following advantages:
1. can keep pressure-fired in the storage tank always, can avoid ambient atmos to enter storage tank internal contamination product, avoid storage tank to produce negative pressure and inhaled flat situation.
2. when tank inner pressure was lower than setting value, the inert gas seal valve was opened tonifying Qi automatically, and when tank inner pressure was higher than setting value, breathing valve was opened exhaust automatically, had reduced the consumption of unreactable gas.
3. this encapsulating method can make pressure of storage tank stable, front and back production system pressure is not exerted an influence, and the equilibrium of pressure of production system control before and after helping,
4. owing to be provided with valve, be independent of each other between each storage tank, be convenient to produce and safeguard in each storage tank import and export.
The specific embodiment
Embodiment, as shown in Figure 1, on one or more storage tank 1, be connected with unreactable gas connection pipe 5 and storage tank freeing pipe 6, storage tank freeing pipe 6 is connected with liquid seal device 4, storage tank freeing pipe 6 is plugged on the bottom of liquid seal device 4, offer on liquid seal device 4 and emissions control system bonded assembly freeing pipe 7, be provided with inert gas seal valve 2 on each unreactable gas connection pipe 5, storage tank freeing pipe 6 is provided with breathing valve 3.Adopt such structure in storage tank, can keep pressure-fired always, can avoid ambient atmos to enter storage tank internal contamination product, avoid storage tank to produce negative pressure and inhaled flat situation, when tank inner pressure is lower than setting value, the inert gas seal valve is opened tonifying Qi automatically, when tank inner pressure was higher than setting value, breathing valve was opened exhaust automatically, had reduced the consumption of unreactable gas.