CN207648452U - A kind of Simple bottle group filling apparatus filled by pump - Google Patents

Abstract

The utility model is related to a kind of Simple bottle group filling apparatus filled by pump, including inlet and gas returning port, inlet is connect by liquid flowing valve with feed liquor main line, gas returning port is connect by return air valve with return-air main line, the charging line that multichannel carries low temperature check-valves is mounted in parallel on feed liquor main line, charging line after liquid phase valve and metal hose with the liquid phase mouth of LNG steel cylinders by connecting, the return line that multichannel carries gas phase valve is mounted in parallel on return-air main line, return line is connect by metal hose with the gas phase mouth of LNG steel cylinders, the crossover piping that valve is bridged with gas-liquid is connected between the inlet ductwork and return-air main line of each liquid phase valve, it is mounted on low-temperature safety valve on feed liquor main line and return-air main line.The utility model is quick, convenient, easily operated, easy to maintenance, safe and reliable, cost of investment is low, and can prevent medium from flowing backwards.

Description

A simple bottle group filling device filled by a pump

technical field

The utility model belongs to the technical field of liquefied natural gas filling equipment, in particular to a simple bottle group filling device filled by a pump.

Background technique

Liquefied natural gas (LNG) is widely used in industry, civil and some special industries because of its convenient storage and transportation, safety and cleanliness. The LNG cylinder group is suitable for small gas consumption. As a small storage gas source device, the filling of steel cylinders has always been a relatively cumbersome problem. At the same time, considering the actual situation of the steel cylinders in use, most of them do not have cylinder filling stations, nor do they add fuel to the car. However, people hope that the tank pump skid in the LNG gasification station can solve the filling problem of steel cylinders.

Contents of the invention

The purpose of this utility model is to propose a simple bottle group filling device filled by a pump for the deficiencies of the prior art.

The utility model solves its technical problem and realizes by taking the following technical solutions:

A simple bottle group filling device filled by a pump, including a liquid inlet connected to the pry outlet of the pry external supply source pump and an air return port connected to the external BOG recovery system. The liquid inlet is connected to the liquid inlet through the liquid inlet valve The main line is connected, and the return air port is connected to the main return line through the return valve. There are multiple liquid filling lines with low-temperature check valves installed in parallel on the main liquid inlet line. The phase valve and metal hose are connected to the liquid phase port of the LNG cylinder, and multiple gas return lines with gas phase valves are installed in parallel on the main gas return line, and each return gas line passes through the metal hose and the gas phase port of the LNG steel cylinder At the same time, a crossover pipe with a gas-liquid crossover valve is connected between the inlet pipeline of each liquid phase valve and the main gas return pipeline, and low-temperature valves are installed on the main liquid inlet pipeline and the main gas return pipeline. safety valve.

Moreover, pressure gauges are installed on the liquid inlet main pipeline and the air return main pipeline.

Advantage and positive effect of the present utility model are:

1. The device of the utility model is fast, convenient, easy to operate, easy to maintain, safe and reliable, simple to set up the process, low in investment cost, and can prevent the backflow of the medium.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

The implementation of the utility model will be described in further detail below in conjunction with the accompanying drawings. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

A simple bottle group filling device filled by a pump, as shown in Figure 1, includes a liquid inlet 10 connected to the pry outlet of the supply source pump outside the pry and an air return port 11 connected to the BOG recovery system outside the pry. The inlet is connected to the main liquid inlet pipeline through the liquid inlet valve 9, and the gas return port is connected to the main gas return pipeline through the gas return valve 12. A plurality of liquid filling pipelines with low-temperature check valves 6 are installed in parallel on the main liquid inlet pipeline. Each liquid filling pipeline is connected to the liquid phase port of the LNG steel cylinder 2 through the liquid phase valve 1 and the metal hose 3 connected in series, and multiple gas return pipelines with gas phase valves 4 are installed in parallel on the main gas return line. Each gas return line is connected to the gas phase port of the LNG cylinder through a metal hose, and a gas-liquid crossover valve 5 is connected between the inlet line of each liquid phase valve and the main gas return line.

In the specific implementation of the utility model, in order to ensure the safe operation of the busbar, a low-temperature safety valve 8 is installed on the liquid inlet main pipeline and the gas return main pipeline.

In the specific implementation of the utility model, in order to constantly monitor the operation state of the busbar, a pressure gauge 7 is installed on the liquid inlet main pipeline and the air return main pipeline.

working principle

The device is to connect the gas phase port and the liquid phase port of the LNG cylinder with the gas phase and liquid phase valves at the busbar through stainless steel metal hoses, the liquid inlet is connected to the pry outlet of the supply source pump outside the skid, and the gas return port is connected to the BOG recovery system outside the skid. connection, the bottom valve of the low temperature safety valve is opened, during the liquid filling process, the gas-liquid crossover valve is closed, and the other valves are opened. The liquefied natural gas passes through the liquid inlet, through the liquid inlet valve of the main line, and then through the series low-temperature check valve, the liquid phase valve of the confluence row bottle group, and the stainless steel metal hose to the liquid inlet valve of the LNG Dewar bottle body and enters the interior of the steel cylinder. The BOG gas generated in the steel cylinder during the filling process passes through the LNG Dewar body discharge valve, stainless steel metal hose, and the gas phase valve of the busbar cylinder group in sequence, and enters the recovery system through the main pipeline return valve and the return port. After the steel cylinder is filled by weighing, close the liquid inlet and discharge valves of the steel cylinder body, open the gas-liquid bridge valve, gasify the residual LNG in the manifold and release it to the BOG system outside the skid through the gas return pipeline. Therefore, the low temperature check valve effectively prevents the liquid from flowing back during the filling process.

Claims (2)

1. A simple bottle group filling device filled by a pump, characterized in that: it includes a liquid inlet connected to the pry outlet of the supply source pump outside the pry and an air return port connected to the BOG recovery system outside the pry, and the liquid inlet passes through The liquid inlet valve is connected to the main liquid inlet pipeline, and the gas return port is connected to the main gas return pipeline through the gas return valve. Multiple liquid filling pipelines with low-temperature check valves are installed in parallel on the main liquid inlet pipeline. The pipeline is connected to the liquid phase port of the LNG cylinder through the liquid phase valve and metal hose connected in series. There are multiple gas return pipelines with gas phase valves installed in parallel on the main gas return pipeline, and each gas return pipeline passes through a metal hose. It is connected to the gas phase port of the LNG steel cylinder. At the same time, a crossover pipe with a gas-liquid crossover valve is connected between the inlet pipeline of each liquid phase valve and the main gas return pipeline. Low temperature safety valves are installed on the main pipeline. 2. The simple bottle group filling device filled by a pump according to claim 1, characterized in that: pressure gauges are installed on both the main liquid inlet pipeline and the main air return pipeline.