Recovery device for residual gas filled in heat insulation gas cylinder

Abstract

The utility model belongs to the technical field of gas filling, and particularly relates to a residual gas recovery device for filling a heat insulation gas cylinder, which is characterized by comprising a liquid storage tank, a metering device, a vaporizer, a gas buffer tank and an oxygen compressor, the metering device is provided with the heat insulation gas cylinder, the liquid storage tank is connected with the heat insulation gas cylinder through a pipeline, and the pipeline is provided with a liquid inlet valve. The heat-insulation gas cylinder is connected with the vaporizer through a pipeline, an exhaust valve is arranged on the pipeline, an outlet of the vaporizer is connected with an inlet of the gas buffer tank, an outlet of the gas buffer tank is connected with the oxygen compressor, and an outlet of the oxygen compressor is respectively connected with a cylinder filling pipeline or a gas customer pipeline. The utility model has the beneficial effects that: in the filling process of the heat-insulating gas cylinder, liquefied gas is filled into the cylinder or enters a user through the oxygen compressor after being automatically weighed, and gas exhausted by the exhaust valve is recycled through the vaporizer and the buffer tank, so that the aim of saving cost is fulfilled, and the national call of energy conservation and emission reduction is responded; and the problem that people are hurt by sprayed low-temperature liquid is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gas filling technical field especially relates to a heat insulation cylinder filling residual gas recovery device. BACKGROUND

[0002] At present, in the process of heat insulation cylinder filling, the gas discharged by the exhaust valve returns to the original storage tank through the gas return pipeline, which may cause several hidden troubles: 1) the returned gas may cause the pressure of the storage tank to rise instantaneously, causing the safety valve to jump and spew out low-temperature liquid, which may even cause the tank body to rupture and cause casualties in severe cases; 2) when the heat insulation cylinder is not filled for a long time, the liquid inlet pipeline or the gas return pipeline may cause the pipeline to be filled with air in the absence of liquid or gas, resulting in quality problems of the storage tank. Therefore, the low-temperature heat insulation cylinder is directly discharged into the atmosphere after exhaust, which inevitably causes waste of gas, increases production cost, and is not conducive to the implementation of energy saving and emission reduction. SUMMARY

[0003] The utility model discloses a heat insulation cylinder filling residual gas recovery device, which overcomes the shortcomings of the prior art, fills the heat insulation cylinder after automatic weighing, recovers the gas discharged by the exhaust valve through the vaporizer and the gas buffer tank, and fills the bottle through the oxygen compressor or goes to the user, thereby saving cost.

[0004] To achieve the above object, the utility model realizes the following technical scheme:

[0005] The heat insulation cylinder filling residual gas recovery device comprises a liquid storage tank, a metering device, a vaporizer, a gas buffer tank and an oxygen compressor, the metering device is provided with a heat insulation cylinder, the liquid storage tank is connected with the heat insulation cylinder through a pipeline, the pipeline is provided with a liquid inlet valve, the heat insulation cylinder is connected with the vaporizer through a pipeline, the pipeline is provided with an exhaust valve, the outlet of the vaporizer is connected with the inlet of the gas buffer tank, the outlet of the gas buffer tank is connected with the oxygen compressor, and the outlet of the oxygen compressor is connected with a bottle filling pipeline or a gas user pipeline.

[0006] Further, the model of the metering device is GZO-YH1T filling scale.

[0007] Further, the model of the oxygen compressor is 2Z2-3 / 165-I.

[0008] Further, the model of the vaporizer is QQN-300 / 20.0 vaporizer.

[0009] Further, the volume ratio of the gas buffer tank to the heat insulation cylinder is 85:1.

[0010] Further, the outlet pipe of the oxygen compressor is provided with a stop valve.

[0011] Further, the filling pipe and the gas user pipe are respectively provided with regulating valves.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1) In the process of filling the heat-insulated gas cylinder, the heat-insulated gas cylinder is filled after automatic weighing, the gas discharged by the exhaust valve is recycled through the vaporizer and the gas buffer tank, and the recycled gas is filled into the cylinder through the oxygen compressor or is sent to the user, so that the cost is saved, and the call of the state for energy saving and emission reduction is responded.

[0014] 2) Since the gas is not returned to the original liquid storage tank, the problem that the safety valve is lifted and low-temperature liquid is sprayed to injure people due to instantaneous pressure rise of the liquid storage tank is avoided, and the problem that the pipeline enters air to affect the quality of the liquid storage tank in the case that there is no liquid or gas in the liquid inlet pipeline or the gas return pipeline is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the utility model embodiment.

[0016] In the figure: 1-liquid storage tank, 2-metering device, 3-vaporizer, 4-gas buffer tank, 5-oxygen compressor, 6-heat-insulated gas cylinder, 7-liquid inlet valve, 8-exhaust valve, 9-stop valve, 10-regulating valve. DETAILED DESCRIPTION

[0017] The technical solutions of the utility model will be clearly and completely described below in combination with specific embodiments. Obviously, the described embodiments are some of the embodiments of the utility model, but not all the embodiments.

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the specific embodiments needed in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the specific embodiments described below are some of the embodiments of the utility model, and other specific embodiments can be obtained by those skilled in the art without creative labor on the basis of the specific embodiments.

[0019] The components of the utility model embodiments described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the specific embodiments is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0020] See Figure 1It is the embodiment structure schematic view of the utility model, including liquid storage tank 1, measuring device 2, vaporizer 3, gas buffer tank 4 and oxygen compressor 5, and is equipped with heat insulation cylinder 6 on measuring device 2, liquid storage tank 1 is connected with heat insulation cylinder 6 by pipeline, and is equipped with liquid inlet valve 7 on the pipeline, heat insulation cylinder 6 is connected with vaporizer 3 by pipeline, and is equipped with exhaust valve 8 on the pipeline, and the import of gas buffer tank 4 is connected to the export of vaporizer 3, and the export of gas buffer tank 4 is connected to oxygen compressor 5, and the export of oxygen compressor 5 is connected with bottle filling pipeline or gas customer pipeline respectively.

[0021] In the embodiment, the model of measuring device 2 is GZO-YH1T filling scale. The model of oxygen compressor 5 is 2Z2-3 / 165-I. The model of vaporizer 3 is QQN-300 / 20.0 vaporizer. The volume ratio of gas buffer tank 4 and heat insulation cylinder 6 is 85:1.

[0022] In order to realize more flexible control, stop valve 9 is arranged on the outlet pipe of oxygen compressor 5. Adjusting valve 10 is arranged on bottle filling pipeline and gas customer pipeline respectively for adjusting and controlling the direction and flow of gas.

[0023] The operation mode and steps of the embodiment of the utility model are as follows:

[0024] 1) heat insulation cylinder 6 is placed on measuring device 2;

[0025] 2) quick connector is connected to liquid inlet valve 7 and exhaust valve 8, liquid inlet valve 7 is connected to the liquid inlet of heat insulation cylinder 6, exhaust valve 8 is connected to vaporizer 3, and vaporizer 3 and gas buffer tank 4 carry out residual gas recovery;

[0026] 3) after reaching the calculated weight of heat insulation cylinder 6, exhaust valve 8 and liquid inlet valve 7 are closed; quick connector is removed to complete the filling of heat insulation cylinder 6;

[0027] 4) the gas discharged by exhaust valve 8 is recovered by vaporizer 3 and gas buffer tank 4. When the gas in gas buffer tank 4 is full, it can be sent to bottle filling pipeline or gas customer pipeline by oxygen compressor 5 respectively.

[0028] In the recovery process, since the gas does not return to liquid storage tank 1, the problem of safety valve jumping and spraying low-temperature liquid to hurt people caused by instantaneous pressure rise of liquid storage tank is avoided, and the problem of pipeline entering air affecting the quality of liquid storage tank caused by no liquid or gas in liquid inlet pipeline or gas return pipeline is solved.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for recovering residual charge from an adiabatic cylinder, characterized in that, It comprises a liquid storage tank, a metering device, a vaporizer, a gas buffer tank and an oxygen compressor, the metering device is provided with an adiabatic cylinder, the liquid storage tank is connected with the adiabatic cylinder through a pipeline, the pipeline is provided with an inlet valve, the adiabatic cylinder is connected with the vaporizer through a pipeline, the pipeline is provided with an exhaust valve, the outlet of the vaporizer is connected with the inlet of the gas buffer tank, the outlet of the gas buffer tank is connected with the oxygen compressor, and the outlet of the oxygen compressor is connected with a bottle filling pipeline or a gas user pipeline.

2. A thermal insulation cylinder charge residual gas recovery device according to claim 1, characterized in that, The model of the metering device is GZO-YH1T filling scale.

3. A thermal insulation cylinder charge residual gas recovery device according to claim 1, characterized in that, The model of the oxygen compressor is 2Z2-3 / 165-I.

4. The thermal insulated cylinder filling boil-off gas recovery apparatus according to claim 1, characterized in that, The model of the vaporizer is QQN-300 / 20.

0.

5. The thermal insulated cylinder filling boil-off gas recovery apparatus according to claim 1, characterized in that, The volume ratio of the gas buffer tank to the adiabatic cylinder is 85:

1.

6. The thermal insulated cylinder filling boil-off gas recovery apparatus according to claim 1, characterized in that, A stop valve is arranged on the outlet pipe of the oxygen compressor.

7. The thermal insulated cylinder filling boil-off gas recovery apparatus according to claim 1, characterized in that, Adjusting valves are arranged on the bottle filling pipeline and the gas user pipeline respectively.

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