LNG booster pump test bench

Abstract

The utility model relates to the technical field of LNG booster pumps, in particular to an LNG booster pump test bench. Comprising a double-layer frame body, an LNG storage tank is installed on the bottom layer of the frame body, an LNG booster pump is inserted in the LNG storage tank, the driving end of the LNG booster pump is connected with a reversing valve set installed on one side of the LNG storage tank through a hydraulic hose, the reversing valve set is connected with an oil pump installed on the bottom layer of the frame body through a hydraulic oil pipe, and the oil pump is connected with an oil tank installed on one side of the LNG storage tank through a pipeline. An exhaust port of the LNG booster pump is connected with an air temperature vaporizer installed on the top layer of the frame body through a pump air outlet pipe, the air temperature vaporizer is connected with a water bath vaporizer installed on the bottom layer of the frame body through a pipeline, the water bath vaporizer is connected with a buffer tank installed on the bottom layer of the frame body through a pipeline, and a flow meter is arranged on the pipeline on the front side of the buffer tank. The actual working environment of the LNG booster pump is simulated, performance detection can be carried out on the LNG booster pump before delivery, the later-stage quality stability of the LNG booster pump is guaranteed, and the later-stage maintenance workload is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to LNG booster pump technical field especially relates to a kind of LNG booster pump test bench. BACKGROUND

[0002] LNG is liquefied natural gas, it is through the gaseous natural gas under normal pressure cooling to-162 ℃, it condenses into liquid, to save storage space, current general all through vehicle-mounted low-temperature gas cylinder are stored. When using, LNG is pumped out from bottle by booster pump first, then gasification is carried out, forms high-pressure natural gas to be used for car. The LNG booster pump of present, its structure is as patent application, discloses a kind of vehicle-mounted LNG booster pump in CN118188386A, this LNG booster pump needs to detect its booster performance after production and manufacturing are completed, to judge whether it is qualified product, but there is no special device for detecting LNG booster pump currently, generally all are directly put into use, according to actual use situation, maintenance is carried out again, leading to poor quality stability of LNG booster pump later period, maintenance workload is big, market feedback is not good, there is no good solution to the above problems currently.

[0003] In summary, the booster performance detection problem of LNG booster pump before shipment has become a technical problem that needs to be solved in the industry. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of LNG booster pump test bench to make up for the deficiency of prior art, solve the problem that the quality stability of previous LNG booster pump is poor before shipment without special detection system.

[0005] The utility model provides a kind of LNG booster pump test bench to make up for the deficiency of prior art, solve the problem that the quality stability of previous LNG booster pump is poor before shipment without special detection system.

[0006] A kind of LNG booster pump test bench, including double-layer frame body, LNG storage tank is installed in the bottom layer of frame body, LNG booster pump is inserted in LNG storage tank, the booster end of LNG booster pump is located in LNG storage tank, the drive end of LNG booster pump is located outside LNG storage tank, the drive end of LNG booster pump is connected with the reversing valve group installed in the side of LNG storage tank by hydraulic hose, the reversing valve group is connected with the oil pump installed in the bottom layer of frame body by hydraulic oil pipe, the oil pump is connected with the oil tank installed in the side of LNG storage tank by pipeline;The exhaust port of LNG booster pump is connected with air-temperature vaporizer installed in the top layer of frame body by pump exhaust pipe, air-temperature vaporizer is connected with water bath vaporizer installed in the bottom layer of frame body by pipeline, water bath vaporizer is connected with buffer tank installed in the bottom layer of frame body by pipeline, buffer tank is connected with exhaust pipeline, flowmeter is arranged on the pipeline of the front side of buffer tank, pressure sensor and temperature sensor are further arranged on buffer tank.

[0007] The LNG storage tank is provided with a liquid level meter.

[0008] The oil tank is provided with a fan on one side.

[0009] The driving end of the LNG booster pump is provided with a venting pipeline.

[0010] The driving end of the LNG booster pump is connected with a water pipe, and the water pipe is connected with the water bath vaporizer through a water pump.

[0011] The exhaust pipeline is provided with an ultrahigh pressure ball valve.

[0012] The LNG storage tank is installed on the bottom layer of the frame body through a gas cylinder saddle.

[0013] The above scheme has the following advantages:

[0014] The hydraulic oil in the oil tank is supplied to the LNG booster pump through the oil pump, the hydraulic oil drives the LNG booster pump to work, the hydraulic oil is reversed through the reversing valve group, the driving end of the LNG booster pump reciprocates, thereby driving the booster end of the LNG booster pump to pressurize the liquid hydrogen, the pressurized liquid hydrogen enters the air temperature vaporizer and the water bath vaporizer through the pipeline for vaporization, and then enters the buffer tank through the pipeline, the exhaust volume of the LNG booster pump per unit time is detected through the flow meter on the front side of the buffer tank, if the exhaust volume per unit time meets the required value, it proves that the LNG booster pump is stable in performance and meets the factory requirements, if the exhaust volume per unit time is lower than the required value, it proves that the LNG booster pump has defects and needs to be repaired in time, until the required value is met, the LNG booster pump is shipped, the actual working environment of the LNG booster pump is simulated through the device, the performance of the LNG booster pump before shipment is detected, the quality stability of the LNG booster pump in the later period is ensured, and the workload of the later maintenance is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a longitudinal stereoscopic schematic view of the utility model.

[0016] Fig. 2 It is a horizontal stereoscopic schematic view of the utility model.

[0017] In the figure, 1 is a frame body, 2 is an LNG storage tank, 3 is an LNG booster pump, 4 is a hydraulic hose, 5 is a reversing valve group, 6 is a hydraulic oil pipe, 7 is an oil pump, 8 is an oil tank, 9 is a pump exhaust pipe, 10 is an air temperature vaporizer, 11 is a water bath vaporizer, 12 is a buffer tank, 13 is an exhaust pipeline, 14 is a venting pipeline, 15 is a water pipe, 16 is a water pump, 17 is an ultrahigh pressure ball valve, and 18 is a gas cylinder saddle. DETAILED DESCRIPTION

[0018] To clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation, and in combination with its drawings.

[0019] As Figs. 1-2 shown in the figure, an LNG booster pump test bench, including double-layer frame body 1, LNG storage tank 2 is installed in the bottom layer of frame body 1, LNG booster pump 3 is inserted in LNG storage tank 2, the booster end of LNG booster pump 3 is located in LNG storage tank 2, the drive end of LNG booster pump 3 is located outside LNG storage tank 2, the drive end of LNG booster pump 3 is connected with the reversing valve group 5 installed on one side of LNG storage tank 2 through hydraulic hose 4, the reversing valve group 5 is connected with oil pump 7 installed in the bottom layer of frame body 1 through hydraulic oil pipe 6, oil pump 7 is connected with oil tank 8 installed on one side of LNG storage tank 2 through pipeline; the exhaust port of LNG booster pump 3 is connected with air-temperature vaporizer 10 installed in the top layer of frame body 1 through pump exhaust pipe 9, air-temperature vaporizer 10 is connected with water bath vaporizer 11 installed in the bottom layer of frame body 1 through pipeline, water bath vaporizer 11 is connected with buffer tank 12 installed in the bottom layer of frame body 1 through pipeline, buffer tank 12 is connected with exhaust pipeline 13, flow meter is arranged on the pipeline in front of buffer tank 12, pressure sensor and temperature sensor are further arranged on buffer tank 12.

[0020] The LNG storage tank 2 is provided with a liquid level gauge for detecting the liquid level in the LNG storage tank 2, and when the liquid level is lower than 20%, the liquid level gauge can send an alarm signal to remind the staff to add liquid hydrogen in time.

[0021] One side of the oil tank 8 is provided with a fan for cooling the oil tank 8.

[0022] The drive end of the LNG booster pump 3 is provided with a vent line 14.

[0023] The drive end of the LNG booster pump 3 is connected with a water pipe 15, the water pipe 15 is connected with the water bath vaporizer 11 through a water pump 16, and the water pump 16 can supply hot water in the water bath vaporizer 11 to the vaporization coil pipe of the LNG booster pump 3 itself, which can also vaporize the liquid hydrogen.

[0024] The exhaust pipeline 13 is provided with an ultrahigh pressure ball valve 17.

[0025] The LNG storage tank 2 is installed on the bottom layer of the frame body 1 through the gas cylinder saddle 18, so that the LNG storage tank 2 is more stable and reliable.

[0026] Working principle:

[0027] When working, hydraulic oil in the oil tank 8 is supplied to the driving end of the LNG booster pump 3 through the oil pump 7, the hydraulic oil pipe 6, the reversing valve group 5 and the hydraulic hose 4 in turn, and the LNG booster pump 3 is normally started, when the pressure sensor of the buffer tank 12 detects that the pressure is lower than the set value, the hydraulic oil drives the LNG booster pump 3 to work, the reversing valve group 5 reverses the hydraulic oil, so that the driving end of the LNG booster pump 3 reciprocates, thereby driving the booster end of the LNG booster pump 3 to pressurize the liquid hydrogen, the pressurized liquid hydrogen enters the air temperature vaporizer 10 and the water bath vaporizer 11 through the pipeline for vaporization, and the vaporized gas enters the buffer tank 12 through the pipeline, so that the pressure of the buffer tank 12 rises, when the pressure sensor of the buffer tank 12 detects that the pressure is higher than the set value, the reversing valve group 5 is closed, the hydraulic oil flows back to the oil tank 8, and the LNG booster pump 3 stops working, so that the LNG booster pump 3 works intermittently. The exhaust capacity of the LNG booster pump 3 per unit time is detected through the flow meter on the front side of the buffer tank 12, if the exhaust capacity per unit time meets the required value, it is proved that the LNG booster pump 3 is stable in performance and meets the factory requirements, if the exhaust capacity per unit time is lower than the required value, it is proved that the LNG booster pump 3 has defects and needs to be repaired in time, and after meeting the required value, it is delivered, the actual working environment of the LNG booster pump 3 is simulated through the device, the performance of the LNG booster pump 3 before delivery can be detected, the quality stability of the LNG booster pump 3 in the later period is ensured, and the workload of the later period maintenance is reduced.

[0028] The above specific embodiment cannot be regarded as a limitation on the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the embodiment of the utility model falls within the protection scope of the utility model.

[0029] The unexplained part of the utility model is the known technology of the person skilled in the art.

Claims

1. An LNG booster pump test bench, characterized in that: The application relates to a double-layer rack body, wherein an LNG storage tank is arranged on the bottom layer of the rack body, an LNG booster pump is arranged in the LNG storage tank, the boosting end of the LNG booster pump is located in the LNG storage tank, the driving end of the LNG booster pump is located outside the LNG storage tank, the driving end of the LNG booster pump is connected with a reversing valve group arranged on one side of the LNG storage tank through a hydraulic hose, the reversing valve group is connected with an oil pump arranged on the bottom layer of the rack body through a hydraulic oil pipe, the oil pump is connected with an oil tank arranged on one side of the LNG storage tank through a pipeline, the exhaust port of the LNG booster pump is connected with an air-temperature vaporizer arranged on the top layer of the rack body through a pump exhaust pipe, the air-temperature vaporizer is connected with a water bath vaporizer arranged on the bottom layer of the rack body through a pipeline, the water bath vaporizer is connected with a buffer tank arranged on the bottom layer of the rack body through a pipeline, the buffer tank is connected with an exhaust pipeline, a flow meter is arranged on the pipeline in front of the buffer tank, and a pressure sensor and a temperature sensor are further arranged on the buffer tank.

2. The LNG booster pump test bench of claim 1, wherein: The LNG storage tank is provided with a liquid level meter.

3. The LNG booster pump test bench of claim 1, wherein: One side of the oil tank is provided with a fan.

4. The LNG booster pump test bench of claim 1, wherein: The driving end of the LNG booster pump is provided with a venting pipeline.

5. The LNG booster pump test stand of claim 1, wherein: The driving end of the LNG booster pump is connected with a water pipe, and the water pipe is connected with the water bath vaporizer through a water pump.

6. The LNG booster pump test stand of claim 1, wherein: An ultrahigh-pressure ball valve is arranged on the exhaust pipeline.

7. The LNG booster pump test stand of claim 1, wherein: The LNG storage tank is arranged on the bottom layer of the rack body through a gas cylinder saddle.

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