Calibration sampling device for petroleum product sulfur detector

Abstract

The invention provides a calibration sample introduction device for a petroleum product sulfur detector, which is characterized in that a table plate is used for placing a beaker to be dropped, one side of the table plate is provided with a linear module assembly, the execution end of the linear module assembly is provided with a measuring cylinder, the upper end of the measuring cylinder is provided with a Z-direction sliding assembly, and the Z-direction sliding assembly is used for pushing the measuring cylinder to drop liquid into the beaker; the linear module assembly is used for driving the measuring cylinder to move above the beaker, a lifting assembly is arranged at one end of the platen, a medicine cup is arranged on the lifting assembly, and the lifting assembly can drive the medicine cup to ascend and descend. According to the calibration sample introduction device for the petroleum product sulfur detector, a worker puts a sample to be titrated into the beakers, then the beakers are positioned and mounted on the bedplate, the measuring cylinder can be driven to slide above the multiple beakers through the linear module assembly, and the measuring cylinder can be compressed through the Z-direction sliding assembly so as to titrate the sample in the beakers; samples can be titrated in a standard and batch mode, the influence of human factors on the sample quality is reduced, convenience is achieved, and the quality is controllable.

Description

Technical Field

[0001] The invention belongs to the field of petroleum product production, and in particular relates to a calibration sample injection device for a petroleum product sulfur detector. Background Art

[0002] The coulometric sulfur analyzer for petroleum products uses an electrochemical analysis method based on Faraday's law of electrolysis, that is, the sample is burned and decomposed to convert sulfide into SO2, which is automatically titrated by a microcoulometric titration system, and the content of the measured substance is calculated based on the amount of electricity consumed by electrolysis. The coulometric determination of sulfur content in petroleum products has been set as a standard analysis method in many countries, and there are many coulometric sulfur analyzers used by petrochemical companies. However, my country does not have verification procedures and calibration specifications for coulometric sulfur analyzers in this field, and the problem of value traceability needs to be solved urgently.

[0003] In the prior art, manual titration is often used to prepare titration samples. There are uncertainties in the titration environment and titration technique, and there is measurement uncertainty in the evaluation of sample preparation using this method. Summary of the invention

[0004] In view of this, the present invention aims to propose a calibration sampling device for a petroleum product sulfur analyzer to solve the uncertainty of the titration environment and titration technique in the prior art sample preparation, and to evaluate the measurement uncertainty of the sample prepared using this method.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A calibration sampling device for a petroleum product sulfur analyzer comprises a linear module assembly, a measuring cylinder, a Z-direction sliding assembly, a table and a lifting assembly. The table is used to place a beaker to be dripped, a linear module assembly is arranged on one side of the table, a measuring cylinder is installed on the execution end of the linear module assembly, and a Z-direction sliding assembly is arranged on the upper end of the measuring cylinder. The Z-direction sliding assembly is used to push the measuring cylinder to drip liquid into the beaker, the linear module assembly is used to drive the measuring cylinder to move above the beaker, a lifting assembly is arranged at one end of the table, a medicine cup is arranged on the lifting assembly, and the lifting assembly can drive the medicine cup to rise and fall.

[0007] Furthermore, a cup rack is arranged on the table top, and a plurality of limiting holes are arranged on the cup rack, and the limiting holes are used to limit the relative positions of the beakers.

[0008] Furthermore, the linear module assembly includes an X-axis sliding assembly and a Y-axis sliding assembly, and the X-axis sliding assembly and the Y-axis sliding assembly are arranged perpendicular to each other, the X-axis sliding assembly is fixedly installed in a fixed position, the Y-axis sliding assembly is fixedly installed to the moving end of the X-axis sliding assembly, and a measuring cylinder is installed at the moving end of the Y-axis sliding assembly.

[0009] Furthermore, the X-axis sliding assembly and the Y-axis sliding assembly have the same structure. The X-axis sliding assembly includes a mounting plate, a first lead screw, a guide rail, a slide table and a first motor. The mounting plate is fixedly installed in a fixed position. The first lead screw is rotatably sleeved on the mounting plate, and the first motor is fixedly arranged on the mounting plate. The transmission shaft of the first motor is fixedly connected to one end of the first lead screw. The outer periphery of the first lead screw is threadedly connected to the slide table, and the Y-axis sliding assembly is fixedly arranged on the slide table. The guide rail is fixedly installed on the mounting plate, and a sliding hole is provided on the slide table. The outer periphery of the guide rail is slidably connected to the sliding hole.

[0010] Furthermore, the lifting assembly includes a push rod cylinder, which is fixedly installed in a fixed position. A base plate is set at the movable end of the push rod cylinder, a medicine cup is placed on the base plate, and a mark is provided on the base plate. A probe is installed on the movable end of the Y-axis sliding assembly.

[0011] Furthermore, a waste container is arranged on the bottom plate.

[0012] Furthermore, the Z-axis sliding assembly includes a sleeve, the outer periphery of the sleeve is fixedly mounted to the movable end of the Y-axis sliding assembly, one end of the sleeve is fixedly connected to one end of a measuring cylinder, a dropper is installed on the other end of the measuring cylinder, the inner ring of the sleeve is slidably connected to a piston, and the upper end of the piston is fixedly connected to one end of a limiting nut, the inner ring of the limiting nut is threadedly connected to a second lead screw, one end of the second lead screw is fixedly connected to a transmission shaft of a second motor, and the second motor is fixedly mounted on the sleeve.

[0013] Furthermore, a sealing rubber ring is arranged on the periphery of the piston.

[0014] Furthermore, a limiting groove is provided on the inner side wall of the sleeve, and a limiting slide is installed on the periphery of the limiting nut, and the limiting slide is slidably connected to the limiting groove.

[0015] Furthermore, a mounting groove is arranged on the sleeve, and a grating ruler is arranged in the mounting groove, and the grating ruler is used to detect the relative position of the limit nut.

[0016] Compared with the prior art, the calibration sample injection device for a petroleum product sulfur analyzer described in the present invention has the following beneficial effects: the staff puts the sample to be titrated into a beaker, and then positions the beaker and installs it on the table. The linear module assembly can drive the measuring cylinder to slide above multiple beakers, and the Z-axis sliding assembly can compress the measuring cylinder to implement titration of the sample in the beaker. The samples can be titrated in a standardized and batch manner, reducing the influence of human factors on the sample quality. It is convenient and the quality is controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic structural diagram of a calibration sample injection device for a petroleum product sulfur analyzer according to an embodiment of the present invention;

[0019] Figure 2 It is a front view structural schematic diagram of a calibration sample injection device for a petroleum product sulfur measuring instrument according to an embodiment of the present invention;

[0020] Figure 3 It is a side view structural schematic diagram of a calibration sample injection device for a petroleum product sulfur analyzer according to an embodiment of the present invention;

[0021] Figure 4 It is a schematic cross-sectional structure diagram of the Z-direction sliding assembly according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the matching structure of the sleeve, the piston and the limit nut according to an embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 1-Linear module assembly; 11-X-axis sliding assembly; 111-Mounting plate; 112-First lead screw; 113-Guide rail; 114-Slide table; 115-First motor; 12-Y-axis sliding assembly; 121-Probe; 2-Measuring cylinder; 3-Lifting assembly; 31-Push rod cylinder; 32-Base plate; 4-Table plate; 41-Cup holder; 5-Beaker; 6-Medicine cup; 7-Waste barrel; 8-Z-axis sliding assembly; 81-Sleeve; 82-Piston; 83-Limiting nut; 84-Second lead screw; 85-Second motor; 86-Limiting slide table; 87-Grating ruler; 88-Sealing rubber ring. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0029] like Figure 1-Figure 5 As shown, a calibration sample injection device for a petroleum product sulfur analyzer comprises a linear module assembly 1, a measuring cylinder 2, a Z-direction sliding assembly 8, a table 4 and a lifting assembly 3. The table 4 is used to place a beaker 5 to be dripped. A linear module assembly 1 is arranged on one side of the table 4. The measuring cylinder 2 is installed on the execution end of the linear module assembly 1, and a Z-direction sliding assembly 8 is arranged on the upper end of the measuring cylinder 2. The Z-direction sliding assembly 8 is used to push the measuring cylinder 2 to drip into the beaker 5. The linear module assembly 1 is used to drive the measuring cylinder 2 to move above the beaker 5. A lifting assembly 3 is arranged at one end of the table 4. A medicine cup 6 is arranged on the lifting assembly 3. The lifting assembly 3 can The medicine cup 6 is driven to rise and fall, and the staff puts the sample to be titrated into the beaker 5, and then positions and installs the beaker 5 on the table 4. The linear module assembly 1 can drive the measuring cylinder 2 to slide above multiple beakers 5, and the Z-axis sliding assembly 8 can compress the measuring cylinder 2 to achieve titration of the sample in the beaker 5. The samples can be titrated in a standardized and batch manner, reducing the influence of human factors on the quality of the samples. It is convenient and the quality is controllable. During implementation, a cup rack 41 is set on the table 4, and a plurality of limit holes are provided on the cup rack 41. The limit holes are used to limit the relative position of the beaker 5 to prevent the position of the beaker 5 from moving.

[0030] The linear module assembly 1 includes an X-axis sliding assembly 11 and a Y-axis sliding assembly 12, and the X-axis sliding assembly 11 and the Y-axis sliding assembly 12 are arranged perpendicular to each other, the X-axis sliding assembly 11 is fixedly installed in a fixed position, the Y-axis sliding assembly 12 is fixedly installed to the moving end of the X-axis sliding assembly 11, and the moving end of the Y-axis sliding assembly 12 is installed with a measuring cylinder 2. During implementation, the X-axis sliding assembly 11 and the Y-axis sliding assembly 12 have the same structure, the X-axis sliding assembly 11 includes a mounting plate 111, a first lead screw 112, a guide rail 113, a slide 114 and a first motor 115, the mounting plate 111 is fixedly installed in a fixed position, the first lead screw 112 is rotatably sleeved on the mounting plate 111, and the first motor 115 is fixedly arranged on the mounting plate 111, the first motor The transmission shaft of the machine 115 is fixedly connected to one end of the first lead screw 112, the outer periphery of the first lead screw 112 is threadedly connected to the slide 114, and the Y-direction sliding component 12 is fixedly arranged on the slide 114, the guide rail 113 is fixedly installed on the mounting plate 111, and the slide 114 is provided with a sliding hole, the outer periphery of the guide rail 113 is slidably connected to the sliding hole, the rotation of the first motor 115 can realize the rotation of the first lead screw 112, and the slide 114 is threadedly connected to the outer periphery of the first lead screw 112, and the motion trajectory of the slide 114 is limited by the guide rail 113, so that the slide 114 drives the measuring cylinder 2 to slide along the X-direction of the table 4, and the slide 114 of the Y-direction sliding component 12 drives the measuring cylinder 2 to slide along the Y-direction of the table 4, so as to realize titration of multiple beakers 5.

[0031] The lifting assembly 3 includes a push rod cylinder 31, which is fixedly installed in a fixed position. A base plate 32 is set at the movable end of the push rod cylinder 31, and a medicine cup 6 is placed on the base plate 32, and a mark is provided on the base plate 32. A probe 121 is installed on the movable end of the Y-axis sliding assembly 12. The medicine to be titrated is placed in the medicine cup 6. The push rod cylinder 31 is used to drive the relative lifting of the medicine cup 6 and the measuring cylinder 2 so that the measuring cylinder 2 can absorb the medicine in the medicine cup 6, and a waste cylinder 7 is set on one side of the medicine cup 6 to release the remaining waste in the measuring cylinder 2.

[0032] like Figure 4 and Figure 5As shown, the Z-direction sliding assembly 8 includes a sleeve 81, the outer periphery of the sleeve 81 is fixedly mounted to the moving end of the Y-direction sliding assembly 12, one end of the sleeve 81 is fixedly connected to one end of the measuring cylinder 2, and the other end of the measuring cylinder 2 is installed with a dropper, the inner ring of the sleeve 81 is slidably connected to the piston 82, and the upper end of the piston 82 is fixedly connected to one end of the limiting nut 83, the inner ring of the limiting nut 83 is threadedly connected to the second lead screw 84, one end of the second lead screw 84 is fixedly connected to the transmission shaft of the second motor 85, and the second motor 85 is fixedly mounted on the sleeve 81, and the second motor 85 can drive the second lead screw 84 to rotate , and the first motor 115 and the second motor 85 are both existing technologies. The rotating second lead screw 84 can drive the limit nut 83 and the piston 82 to slide axially. The piston 82 is a control structure for the measuring cylinder 2 to inhale and release the medicine, and a sealing rubber ring 88 is arranged on the periphery of the piston 82 to ensure the sealing of this part. At the same time, a limit groove is provided on the inner side wall of the sleeve 81, and a limit slide 86114 is installed on the periphery of the limit nut 83. The limit slide 86114 is slidably connected to the limit groove to prevent the limit nut 83 from rotating synchronously with the second lead screw 84, thereby realizing the axial sliding of the limit nut 83.

[0033] An installation groove is set on the sleeve 81, and a grating ruler 87 is set in the installation groove. The grating ruler 87 is used to detect the relative position of the limit nut 83. The grating ruler 87 is a prior art. The probe 121 of the grating ruler 87 is installed on the limit nut 83 to detect the moving distance of the limit nut 83. By detecting the moving distance of the limit nut 83, the amount of medicine released from the measuring cylinder 2 is controlled. The control method of this embodiment is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and this article is mainly used to protect mechanical devices. This article does not explain the control method and circuit connection in detail.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Calibration sampling device for petroleum product sulfur analyzer, characterized by: The invention comprises a linear module assembly (1), a measuring cylinder (2), a Z-direction sliding assembly (8), a table (4) and a lifting assembly (3); the table (4) is used to place a beaker (5) to be dripped; the linear module assembly (1) is arranged on one side of the table (4); the measuring cylinder (2) is installed on the execution end of the linear module assembly (1); the Z-direction sliding assembly (8) is arranged on the upper end of the measuring cylinder (2); the Z-direction sliding assembly (8) is used to push the measuring cylinder (2) to drip into the beaker (5); the linear module assembly (1) is used to drive the measuring cylinder (2) to move above the beaker (5); the lifting assembly (3) is arranged on one end of the table (4); a medicine cup (6) is arranged on the lifting assembly (3); and the lifting assembly (3) can drive the medicine cup (6) to rise and fall.

2. The calibration sampling device for a petroleum product sulfur analyzer according to claim 1, characterized in that: A cup rack (41) is arranged on the table plate (4), and a plurality of limiting holes are arranged on the cup rack (41), wherein the limiting holes are used to limit the relative position of the beaker (5).

3. The calibration sampling device for a petroleum product sulfur analyzer according to claim 1, characterized in that: The linear module assembly (1) comprises an X-axis sliding assembly (11) and a Y-axis sliding assembly (12), and the X-axis sliding assembly (11) and the Y-axis sliding assembly (12) are arranged perpendicular to each other, the X-axis sliding assembly (11) is fixedly installed at a fixed position, the Y-axis sliding assembly (12) is fixedly installed to the moving end of the X-axis sliding assembly (11), and the moving end of the Y-axis sliding assembly (12) is equipped with a measuring cylinder (2).

4. The calibration sampling device for a petroleum product sulfur analyzer according to claim 3, characterized in that: The X-direction sliding assembly (11) and the Y-direction sliding assembly (12) have the same structure. The X-direction sliding assembly (11) comprises a mounting plate (111), a first lead screw (112), a guide rail (113), a slide table (114) and a first motor (115). The mounting plate (111) is fixedly mounted at a fixed position. The first lead screw (112) is rotatably sleeved on the mounting plate (111), and the first motor (115) is fixedly arranged on the mounting plate (111). The transmission shaft of the first motor (115) is fixedly connected to one end of the first lead screw (112). The outer periphery of the first lead screw (112) is threadedly connected to the slide table (114), and the Y-direction sliding assembly (12) is fixedly arranged on the slide table (114). The guide rail (113) is fixedly mounted on the mounting plate (111), and the slide table (114) is provided with a slide hole, and the outer periphery of the guide rail (113) is slidably connected to the slide hole.

5. The calibration sampling device for a petroleum product sulfur analyzer according to claim 3, characterized in that: The lifting assembly (3) comprises a push rod cylinder (31), the push rod cylinder (31) is fixedly installed at a fixed position, a bottom plate (32) is arranged at the movable end of the push rod cylinder (31), a medicine cup (6) is placed on the bottom plate (32), and a mark is arranged on the bottom plate (32), and a probe (121) is installed on the movable end of the Y-axis sliding assembly (12).

6. The calibration sampling device for a petroleum product sulfur analyzer according to claim 5, characterized in that: A waste barrel (7) is arranged on the bottom plate (32).

7. The calibration sampling device for a petroleum product sulfur analyzer according to claim 1, characterized in that: The Z-direction sliding assembly (8) comprises a sleeve (81), the outer periphery of the sleeve (81) is fixedly mounted on the moving end of the Y-direction sliding assembly (12), one end of the sleeve (81) is fixedly connected to one end of the measuring cylinder (2), the other end of the measuring cylinder (2) is mounted with a dropper, the inner ring of the sleeve (81) is slidably connected to a piston (82), and the upper end of the piston (82) is fixedly connected to one end of a limiting nut (83), the inner ring of the limiting nut (83) is threadedly connected to a second lead screw (84), one end of the second lead screw (84) is fixedly connected to a transmission shaft of a second motor (85), and the second motor (85) is fixedly mounted on the sleeve (81).

8. The calibration sampling device for a petroleum product sulfur analyzer according to claim 7, characterized in that: A sealing rubber ring (88) is arranged on the periphery of the piston (82).

9. The calibration sampling device for a petroleum product sulfur analyzer according to claim 7, characterized in that: The inner side wall of the sleeve (81) is provided with a limiting groove, and the outer periphery of the limiting nut (83) is provided with a limiting slide (86) (114), and the limiting slide (86) (114) is slidably connected to the limiting groove.

10. The calibration sampling device for a petroleum product sulfur analyzer according to claim 7, characterized in that: The sleeve (81) is provided with a mounting groove, in which a grating ruler (87) is arranged. The grating ruler (87) is used to detect the relative position of the limit nut (83).

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