A fuel moisture measuring device and its usage method

Abstract

This application discloses a fuel moisture measuring device and its usage method, relating to the field of sampling and testing equipment technology. The device collects samples by directly inserting a tubular sampling component into the fuel. When the bottom of the sampling component moves close to the bottom of the vehicle compartment, the bottom of the sampling component is closed to obtain the sample. This achieves the technical effect that the fuel moisture measuring device can efficiently and conveniently obtain fuel samples near the bottom of the vehicle compartment and the measurement results are highly accurate.

Claims

1. A fuel moisture measuring device, characterized in that: Includes a basic gantry (100), a sliding frame (200), a vertical telescopic body (300), a tubular sampling assembly (400), and a sample receiving container; The top of the basic gantry frame (100) is equipped with a guide rail, which can be raised and lowered as needed; The sliding frame (200) is a horizontally placed U-shaped frame that moves laterally on a guide rail and is fixed at the top with a columnar frame structure top support frame (210). The vertical telescopic body (300) is positioned on the top support frame (210) and is controlled to extend and retract; The tubular sampling assembly (400) includes a connecting frame (410) fixed to the bottom of the vertical telescopic body (300), a tubular sampling body (420), and a bottom opening sealing assembly (430); The tubular sampling body (420) is a vertical rigid tube with a square or rounded square cross-section. The top is fixed on the connecting frame (410). There are insertion grooves (423) on both sides near the top. There is an internal channel (424) for the sealing belt (432) to pass through. There are two symmetrically arranged side exit grooves (426) on the inner wall near the bottom. The main body of the bottom sealing assembly (430) is a metal soft strip driven by two rollers. The metal soft strip passes through the insertion groove (423), the internal channel (424) and the side exit groove (426), and is in the shape of a C or U. At least one opening groove (433) is positioned on the metal soft strip. The opening groove (433) is a through groove. When it moves to the bottom position away from the closed tubular sampling body (420), the bottom is sealed by the metal soft strip. The sample receiving container is positioned on the ground near the base gantry (100); The bottom sealing assembly (430) has a rotating drum (431); the metal soft strip is a sealing strip (432); The rotating drum (431) is positioned on the side wall of the tubular sampling body (420), corresponding one-to-one with the insertion groove (423); The two ends of the closed strip (432) are respectively wound and positioned on the two rotating drums (431), and are always in a taut state; The opening groove (433) is a rectangular or hexagonal through groove, and the edge is less than 2 cm away from the edge of the closed strip (432).

2. The fuel moisture measuring device as described in claim 1, characterized in that: The basic gantry frame (100) includes a vertical frame (110), a lifting frame (120), and a horizontal track (130); The vertical frame (110) is a rigid frame set vertically, and there are two of them. The whole is a telescopic rod structure and can be extended and retracted in a controlled manner. The two vertical frames (110) are located on both sides of the carriage during sampling. The lifting frame (120) is fixed to the top of the vertical frame (110) and corresponds one-to-one with the vertical frame (110); The horizontal track (130) is a horizontal rigid straight track, with both ends fixed on two lifting frames (120) respectively, and its length direction is perpendicular to the height direction of the vertical frame (110).

3. The fuel moisture measuring device as described in claim 1, characterized in that: The tubular sampling body (420) includes a top ring (421), a base tube (422), and a bottom ring (425); A bottom guide plate (427) is also fixed in the space enclosed by the bottom ring (425); The bottom guide plate (427) is a vertical rigid plate with a D-shaped longitudinal section that protrudes downwards and a rounded bottom surface. The bottom end is lower than the side through groove (426) and higher than the bottom of the bottom ring (425). When the closed belt (432) moves in a controlled manner, it moves under the guidance of the bottom surface of the bottom guide plate (427).

4. The fuel moisture measuring device as described in claim 1, characterized in that: The top of the tubular sampling assembly (400) is also positioned with a connecting block (440) and a tube rotating assembly, which rotates and moves downwards during insertion; The connecting block (440) is a columnar hard block, with its top fixed to the bottom of the vertical telescopic body (300) and its bottom rotatably connected to the connecting frame (410) around its own axis and the axis of the tubular sampling body (420). The tube rotation assembly is used to drive the tubular sampler (420) to rotate around its own axis.

5. The fuel moisture measuring device as described in claim 4, characterized in that: The tube rotation assembly includes a horizontal support frame (442), a telescopic rod (443), an end collar (444), and a top support column (445); The horizontal support frame (442) is a horizontal rigid rod, one end of which is fixed to the side wall of the connecting block (440); The telescopic rod (443) is a horizontal telescopic rod structure, with one end fixed to the end of the horizontal carrier (442) away from the connecting block (440), and the included angle between the telescopic rod (443) and the telescopic rod (443) is 30 to 60 degrees. The end collar (444) is a horizontally placed rigid ring, fixed to the end of the telescopic rod (443) away from the horizontally placed carrier (442); The top support column (445) is a vertically arranged rigid round rod, with its bottom end fixed to the top of the tubular sampling body (420) near the corner; the inner diameter of the end collar (444) is more than 1.5 times the cross-sectional diameter of the top support column (445), and it is fitted onto the top support column (445). When the tubular sampling assembly (400) is inserted into the fuel for sampling, the telescopic rod (443) extends and retracts frequently, causing the tubular sampling body (420) to rotate while being inserted into the fuel.

6. The fuel moisture measuring device as described in any one of claims 1 to 5, characterized in that: The tubular sampling body (420) has multiple side openings (428) evenly spaced on one side wall of the base tube (422); one of the side openings (428) is located close to the bottom ring (425); The side opening (428) is a rectangular through groove that communicates with the built-in channel (424) inside the base pipe (422) and with the internal space of the base pipe (422). The distance between them is greater than their own length, and the width of the side opening (428) is greater than 0.7 times the width of the base pipe (422). The side opening (428) is normally closed by the sealing strip (432). The connecting block (440) is rotatably connected to the bottom of the vertical telescopic body (300), and the axis of rotation is the same as the length direction of the horizontal track (130), and the rotation is controlled. The sealing strip (432) has multiple opening slots (433) positioned on it; during sampling, the sealing strip (432) closes all the side openings (428); except for the opening slot (433) corresponding to the bottom opening of the tubular sample body (420), the other opening slots (433) correspond one-to-one with the side openings (428).

7. The fuel moisture measuring device as described in claim 6, characterized in that: The tubular sampling body (420) has multiple side openings (428) evenly spaced on two of its base tubes (422); The side openings (428) are all connected to the two built-in channels (424) inside the base pipe (422), and are normally closed by the sealing strip (432); A row of top discharge rods (530) is provided directly above the sample receiving container. The top discharge rods (530) are vertically arranged rigid rods and are fixed to the ground by a support frame (540). Two side openings (428) located on different sides of the tubular sampling body (420) correspond to a top discharge rod (530); When it is necessary to output a sample from the side opening (428), the top unloading rod (530) is inserted into the side opening (428) to assist in the output of the sample.

8. The fuel moisture measuring device as described in claim 7, characterized in that: The closed strip (432) is provided with a cleaning area (434); the cleaning area (434) is a section of closed strip (432) densely covered with bristles; after sampling is completed and the sample is unloaded, the closed strip (432) is controlled to move and the cleaning area (434) is used to brush and clean the tubular sample body (420).

9. A method of using a fuel moisture measuring device, characterized in that: The equipment used for determining fuel moisture content is as described in claim 1; the steps are as follows: First, fuel sampling is carried out; during sampling, the tubular sampling assembly (400) moves under the drive of the base gantry (100) and the vertical telescopic body (300) to ensure that it does not obstruct the passage of the carriage. Then control the movement of the fuel-carrying car to the space between the two vertical frames (110); Control the bottom opening sealing assembly (430) to operate, exposing the bottom opening of the tubular sampler (420); The control base gantry (100) and the vertical telescopic body (300) work together to insert the tubular sampler (420) into the fuel-carrying car until it is inserted close to the bottom of the car; Control the operation of the bottom opening sealing assembly (430) and use the sealing strip (432) to seal the bottom opening of the tubular sampler (420); The tubular sampler (420) is pulled out and moved to the top of the sample receiving container. Then the bottom sealing assembly (430) is operated to expose the bottom opening of the tubular sampler (420). At the same time, the tubular sampler (420) is shaken up and down to unload the sample into the sample receiving container. The following steps were performed in sequence: fuel transportation, sample preparation, weighing, baking, and secondary weighing. The moisture content of the fuel was determined by the weight difference between the two weighings.

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