一种液化石油气充装系统
By designing a liquefied petroleum gas filling system and adopting a closed container structure of underground storage tanks and submersible pumps, the problems of leakage risk and easy failure of mechanical seals were solved, the safety and reliability of underground installation of storage tanks were achieved, cavitation problems at low liquid levels were avoided, and the overall safety and reliability of the system were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUZHOU SANJING CRYOGENIC EQUIP
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing liquefied petroleum gas (LPG) filling stations have problems such as leakage risks, easy failure of mechanical seals, inability to meet the requirements for underground storage tanks, easy cavitation of pumps at low liquid levels, and an increase in leakage points due to the increase in pipeline valves.
Design a liquefied petroleum gas filling system, which adopts an underground storage tank, a submersible pump, an inlet pool and a closed container structure. The submersible pump is completely submerged in the storage tank and is sealed to the top plate of the pump cover through an outlet connection pipe. It uses ceramic or glass encapsulated electrical penetrations. The outlet connection pipe is connected by a flange through a detachable pipe section. A check valve and a pressure gauge are installed on the pump outlet pipe.
This system ensures the safety and reliability of underground installation of storage tanks, eliminates the need for priming of submersible pumps, allows for rapid start-up, and eliminates overall leakage, thus improving the safety and reliability of the system.
Smart Images
Figure CN224516513U_ABST
Abstract
Claims
1. A liquefied petroleum gas filling system characterized by: include The underground storage tank (1) has a gap (3) between its perimeter and the concrete foundation (2), and the gap (3) is filled with fine sand. The submersible pump (5) is completely submerged in the liquefied petroleum gas in the storage tank (1) and is sealed to the storage tank (1) through the liquid outlet connection pipe (6) and the pump cover top plate (7). An inlet pool (4) is located at the bottom of the storage tank (1); The pump cover top plate (7) and the storage tank (1) form a closed container. The submersible pump cable (8) is fixed along the liquid outlet connection pipe (6), passes through the pump cover top plate (7), and is connected to the electrical penetration piece (9).
2. The liquefied petroleum gas filling system according to claim 1, characterized in that: The electrical penetration component (9) is a ceramic-encapsulated or glass-encapsulated structure.
3. The liquefied petroleum gas filling system as claimed in claim 1, wherein: The liquid outlet connection pipe (6) is composed of multiple detachable pipe sections (61) connected by flanges (62).
4. The liquefied petroleum gas filling system according to claim 1, wherein: The pump cover top plate (7) is externally connected to a pump outlet pipe (11), and a check valve (12), a shut-off valve (13), and a pressure gauge (14) are installed on the pump outlet pipe (11).
5. The liquefied petroleum gas filling system as claimed in claim 1, wherein: The depth of the liquid inlet tank (4) is ≥0.5m.
6. The liquefied petroleum gas filling system as claimed in claim 1, wherein: The submersible pump cable (8) is fixedly connected to the outlet connection pipe (6) by fasteners (10).