Distillation range tester with active cooling

Abstract

The distillation range tester with active cooling function comprises a main box, a measuring cylinder bath and a heating box, the upper part of the main box is provided with a cold bath, the lower part is provided with a compressor refrigeration system and electrical control components; the top surface of the measuring cylinder bath is a panel control display system, and the lower part is a measuring cylinder receiving chamber; the upper part of the heating box is provided with a heating furnace and a lifting platform, and the lower part is provided with an exhaust device; the heating furnace is provided with a heating hole and a shelf, the heating hole is provided with an electric heating wire, the shelf is arranged on the heating furnace and is provided with a shelf hole for arranging a distillation flask, and an active cooling plate is further arranged on the shelf, the active cooling plate is made of a heat-conducting material, and a refrigerant flow channel is further arranged in the active cooling plate. The distillation range tester overcomes the defects of the prior art, can effectively and actively control the heating temperature of the distillation flask, can prevent low-boiling-point components from excessively vaporizing at an unintended high temperature and causing local thermal decomposition, can ensure that the overall distillation range detection data does not appear systematic errors, and can meet the high-standard detection requirements.

Description

Technical Field

[0001] This utility model relates to a distillation range measuring instrument, and more particularly to a distillation range measuring instrument with active cooling function, belonging to the technical field of manufacturing equipment for detecting the physicochemical properties of petroleum products. Background Technology

[0002] Distillation range is one of the key physicochemical indicators for evaluating petroleum products (such as engine fuels, solvent oils, and light petroleum products). Its measurement results are of vital importance for determining the composition of light and heavy fractions of oil products, controlling production processes, ensuring product quality, and evaluating performance. Especially in the field of light fuel oil, distillation range is the main means of distinguishing different fuel oil products and controlling production, and it is an indispensable core inspection item.

[0003] The distillation range tester is a specialized device for performing this test. Its working principle and structure must strictly comply with the relevant provisions of Chinese national standards GB / T 6536 "Determination of Atmospheric Distillation Characteristics of Petroleum Products," GB / T 7534 "Determination of Boiling Range of Volatile Organic Liquids for Industrial Use," and a series of other industry standards. It is widely used in petroleum, chemical, commodity inspection, and research institutions. This type of equipment, such as... Figure 1 The schematic diagram of the three-dimensional structure of the existing distillation range measuring instrument is shown. It typically consists of a heating chamber, a main unit, and a graduated cylinder bath. The upper part of the heating chamber has a heating furnace and a lifting platform, while the lower part has an exhaust system. The heating furnace is used to heat the distillation flask containing the test sample, and its lifting is controlled by a knob. The upper part of the main unit has a cold bath, which includes components such as heating tubes, temperature sensors, and stirrers. The lower part has a compressor refrigeration unit and electrical control components. The top surface of the graduated cylinder bath is a panel control and display system, and the lower part is the graduated cylinder receiving chamber, which contains lighting devices and temperature sensors.

[0004] Existing distillation range measuring instruments typically use a heating plate to heat the distillation flask, with a thermostat controlling the heating power to achieve a specified heating rate. However, these traditional devices have a significant technical drawback: their heating plates usually only provide heating without integrating any active or rapid cooling methods. Therefore, when measuring the distillation range of low-boiling-point petrochemical products such as gasoline, naphtha, and certain solvent oils, these materials are extremely sensitive to changes in heating power due to their low boiling points, rapid evaporation, and sensitivity to changes in heating power. When it is necessary to pause heating or reduce the heating intensity according to standard methods, existing equipment can only reduce the temperature by cutting off the heating power and relying on the heating plate's own heat dissipation capacity for natural cooling. This passive cooling method is slow and has a significant cooling lag effect, leading to deviations in the distillation range measurement data. The specific cause can be attributed to the untimely and inaccurate cooling, which leads to an excessively high actual temperature of the heating plate, causing overheating at the bottom of the distillation flask. This not only causes the low-boiling-point components to over-vaporize at unexpectedly high temperatures, but also causes local thermal decomposition. Ultimately, this results in the measured distillation temperature deviating from the true value, leading to a systematic error where the overall distillation range data is too high. This seriously affects the accuracy and repeatability of the test results, making it impossible to meet the high standards of quality control. Thus, it constitutes a technical bottleneck in this field that urgently needs to be solved.

[0005] Therefore, there is an urgent need in this field for a new type of heating device for distillation range measuring instruments that can rapidly and accurately control the temperature of the heating plate, especially with efficient active cooling function, in order to overcome the shortcomings of the existing technology and ensure the accuracy and reliability of distillation range data measurement for various petroleum products, especially low-boiling-point samples. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a distillation range measuring instrument with active cooling function, enabling rapid and precise control of the heating plate temperature, and ensuring the accuracy and reliability of distillation range data measurement for various petroleum products, especially low-boiling-point samples. The technical solution is as follows:

[0007] A distillation range measuring instrument with active cooling function is used for determining the distillation range of petroleum products. It includes a main unit, a graduated cylinder bath, and a heating chamber. The upper part of the main unit is equipped with a cold bath containing a heating element, a temperature sensor, and a stirrer. The lower part of the main unit is equipped with a compressor refrigeration system and electrical control components. The top surface of the graduated cylinder bath is a panel control display system, and the lower part of the graduated cylinder bath is a graduated cylinder receiving chamber containing a lighting device and a temperature sensor. The upper part of the heating chamber is equipped with a heating furnace and a lifting platform. The heating furnace is mounted on the lifting platform, whose height is adjustable via a handle. The lower part of the heating chamber is equipped with an exhaust device. The heating furnace has heating chambers and shelves. Heating wires are installed in the heating chambers. The shelves are placed on the heating furnace and have mounting holes matching the heating chambers. The mounting holes are used to hold distillation flasks containing test samples.

[0008] Furthermore, the shelf is also provided with an active cooling plate, which is made of thermally conductive material and has through holes that match the mounting holes of the shelf. The active cooling plate also has a refrigerant flow channel inside.

[0009] Optionally, the refrigerant flow channel is a spiral coil surrounding the through hole or a row of parallel pipes arranged around the through hole.

[0010] Optionally, the thermally conductive material is cast iron, steel, copper, or aluminum.

[0011] Optionally, the refrigerant is water or cooled air.

[0012] Preferably, the active cooling plate and the shelf are combined into a superimposed integral component.

[0013] Furthermore, the distillation range measuring instrument also includes a control valve and a refrigerant controller. The control valve is used to control the inlet and outlet of the refrigerant flow channel, and the refrigerant controller is used to control the opening and closing of the control valve and the flow rate and velocity of the refrigerant.

[0014] Optionally, the control valve is a solenoid valve or a pneumatic valve, and the refrigerant controller is a solenoid controller matched with the solenoid valve or a pneumatic controller matched with the pneumatic valve.

[0015] Furthermore, the distillation range measuring instrument also includes a cooling plate temperature sensor and a cooling plate temperature display. The cooling plate temperature sensor is disposed on the active cooling plate, and the cooling plate temperature display is disposed on the panel control display system.

[0016] Furthermore, the distillation range measuring instrument also includes a solenoid valve, a solenoid controller, a cooling plate temperature sensor, a cooling plate temperature display, and a program controller.

[0017] The solenoid valve is used to control the inlet and outlet of the refrigerant flow channel. The solenoid controller is used to control the opening and closing of the solenoid valve. The cooling plate temperature sensor is installed on the active cooling plate to sense the real-time temperature of the active cooling plate. The cooling plate temperature display is used to display the real-time temperature of the active cooling plate. The program controller is connected to the heating wire, the cooling plate temperature sensor and the solenoid controller. After the real-time temperature of the active cooling plate is sensed and the set control program is run, the input power of the heating wire and the flow rate and velocity of the refrigerant are controlled.

[0018] Preferably, the electromagnetic controller, the cooling plate temperature display, and the program controller are integrated together to form an active temperature control system for the heating furnace, and the active temperature control system for the heating furnace is placed on the upper part of the main unit. Compared with the prior art, the beneficial effects and advancements of this utility model are as follows:

[0019] This invention modifies existing distillation range measuring instruments by adding an active cooling plate to the heating furnace shelf. This allows testing personnel to effectively and actively control the heating temperature of the distillation flask during the determination of the distillation range of petroleum products, thus overcoming the shortcomings of existing technologies. It prevents low-boiling-point components from excessively vaporizing at unexpected high temperatures, thus avoiding localized thermal decomposition. This ensures that the overall distillation range testing data is free from systematic errors, guaranteeing the accuracy and repeatability of the test results and meeting high-standard testing quality control requirements. Compared with existing technologies, this invention has substantial features and significant progress, and therefore has great potential for promotion and application. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0021] It is obvious:

[0022] The accompanying drawings described below are only some of the drawings of the embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort, but these other drawings are also drawings required for the embodiments of this utility model.

[0023] Figure 1 A three-dimensional structural diagram of a distillation range measuring instrument in the prior art;

[0024] Figure 2 A three-dimensional structural schematic diagram of a distillation range measuring instrument provided for an embodiment of this utility model;

[0025] Figure 3A three-dimensional structural diagram of the heating furnace assembly of a distillation range measuring instrument provided for an embodiment of this utility model;

[0026] Figure 4 A schematic diagram of the active cooling plate structure of a distillation range measuring instrument provided in this embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the active cooling plate structure of another distillation range measuring instrument provided in this embodiment of the present invention.

[0028] In the picture:

[0029] 100 - Main unit chassis;

[0030] 200 - Measuring cylinder bath; 210 - Panel control and display system; 220 - Measuring cylinder receiving chamber;

[0031] 300-Heating box, 310-Heating furnace, 311-Heating cavity, 312-Shelf, 313-Heating wire, 314-Shelf hole, 320-Handle, 330-Active cooling plate, 331-Through hole, 332-Refrigerant flow channel;

[0032] 400-distillation flask;

[0033] 500-Active temperature control system for heating furnace. Detailed Implementation

[0034] To make the objectives, technical solutions, beneficial effects, and significant advancements of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings provided for the embodiments of this utility model. Obviously, all the described embodiments are only some, not all, of the embodiments of this utility model, and based on the embodiments of this utility model, those skilled in the art can obtain more other embodiments without creative effort, but these possible embodiments all fall within the protection scope of this utility model.

[0035] It should be noted that the term "comprising" and any variations thereof in the specification and claims of this utility model are intended to cover non-exclusive inclusion, for example, including not only a series of listed technical features and structural components, but also optionally technical features and structural components not listed, or optionally the connection relationships between these technical features and structural components.

[0036] It should be understood that in the description of the embodiments of this utility model, the terms "upper part" and "lower part" and other indicative directional or positional terms are only based on the directional or positional relationship shown in the accompanying drawings of the embodiments of this utility model, and are used to facilitate the description of the embodiments of this utility model and simplify the explanation, rather than indicating or implying that the device or element must have a specific orientation, specific orientational structure and operation, and therefore should not be construed as a limitation of this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "set up" and "equipped with" should be interpreted broadly. For example, it can mean a fixed setting or a detachable setting or a movable setting; that is, it can mean a direct setting or a setting, or an indirect setting or a setting through an intermediate medium. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] It should also be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0039] The technical solution of this utility model will now be described in detail with reference to specific embodiments. Example

[0040] This embodiment provides a distillation range measuring instrument for determining the distillation range of petroleum products, wherein the distillation range measuring instrument has an active cooling function.

[0041] like Figure 2 A three-dimensional structural schematic diagram of a distillation range measuring instrument provided for an embodiment of this utility model. Figure 3 A three-dimensional structural schematic diagram of the heating furnace assembly of a distillation range measuring instrument provided in this embodiment of the present invention is shown below:

[0042] A distillation range measuring instrument with active cooling function includes:

[0043] The main unit is 100, the measuring cylinder bath is 200, and the heating chamber is 300, wherein:

[0044] The upper part of the main unit 100 is equipped with a cold bath, which contains a heating element, a temperature sensor and a stirrer. The lower part of the main unit 100 is equipped with a compressor refrigeration system and electrical control components.

[0045] The top surface of the graduated cylinder bath 200 is a panel control and display system 210, and the lower part of the graduated cylinder bath 200 is a graduated cylinder receiving chamber 220, which is equipped with a lighting device and a temperature sensor.

[0046] The heating box 300 has a heating furnace 310 and a lifting platform on its upper part. The heating furnace 310 is set on the lifting platform, and the height of the lifting platform is adjusted by the handle 320. The heating box 300 has an exhaust device at its lower part. The heating furnace 310 has a heating cavity 311 and a shelf 312. The heating cavity 311 is equipped with an electric heating wire 313. The shelf 312 is placed on the heating furnace 310 and has a placement hole 314 that matches the heating cavity 311. The placement hole 314 is used to place a distillation flask 400 containing the test sample.

[0047] Furthermore, the shelf 312 is also provided with an active cooling plate 330, which is made of thermally conductive material and has through holes 331 that match the mounting holes 314 of the shelf 312. The active cooling plate 330 also has a refrigerant flow channel 332 inside.

[0048] Optional, such as Figure 4 A schematic diagram of the active cooling plate structure of a distillation range measuring instrument provided in this embodiment of the present invention. Figure 5 The schematic diagram of the active cooling plate structure of another distillation range measuring instrument provided in this utility model embodiment shows that the refrigerant flows through channel 332, which is a spiral coil surrounding the through hole 331 or a row of parallel pipes arranged around the through hole 331.

[0049] Optionally, the heat-conducting material can be cast iron, steel, copper or aluminum, and the refrigerant can be water or cooled air.

[0050] Preferred, such as Figure 2 A three-dimensional structural diagram of the heating furnace component of a distillation range measuring instrument provided in this embodiment of the present invention is shown: the active cooling plate 330 and the shelf 312 are combined into a superimposed integral component.

[0051] Furthermore, the distillation range measuring instrument provided in this embodiment also includes a control valve (not shown in the figure) and a refrigerant controller (not shown in the figure). The control valve (not shown in the figure) is used to control the inlet and outlet of the refrigerant flowing through the channel 332, and the refrigerant controller (not shown in the figure) is used to control the opening and closing of the control valve (not shown in the figure) and the flow rate and velocity of the refrigerant.

[0052] Optionally, the control valve (not shown in the figure) is a solenoid valve or a pneumatic valve, and the refrigerant controller (not shown in the figure) is a solenoid controller matched with the solenoid valve or a pneumatic controller matched with the pneumatic valve.

[0053] Furthermore, such as Figure 2 As shown in Figure 3, the distillation range measuring instrument provided in this embodiment also includes a cooling plate temperature sensor 333 and a cooling plate temperature display. The cooling plate temperature sensor 333 is disposed on the active cooling plate 330, and the cooling plate temperature display is disposed on the panel control display system 210.

[0054] Furthermore, such as Figure 2 As shown in Figure 3, the distillation range measuring instrument provided in this embodiment also includes a solenoid valve (not shown in the figure), an electromagnetic controller (not shown in the figure), a cooling plate temperature sensor 333, a cooling plate temperature display (not shown in the figure), and a program controller (not shown in the figure).

[0055] The solenoid valve is used to control the inlet and outlet of the refrigerant through channel 332. The solenoid controller is used to control the opening and closing of the solenoid valve. The cooling plate temperature sensor is installed on the active cooling plate 330 to sense the real-time temperature of the active cooling plate 330. The cooling plate temperature display is used to display the real-time temperature of the active cooling plate 330. The program controller is connected to the heating wire 313, the cooling plate temperature sensor and the solenoid controller. After the real-time temperature of the active cooling plate 330 is sensed and the set control program is run, the input power of the heating wire 313 and the flow rate and velocity of the refrigerant are controlled.

[0056] Preferred, such as Figure 2 As shown, the electromagnetic controller (not shown in the figure), the cooling plate temperature display and the program controller (not shown in the figure) are combined to form the active temperature control system 500 of the heating furnace, which is placed on the upper part of the main unit box 100.

[0057] In conclusion, it can be seen that:

[0058] This invention modifies existing distillation range measuring instruments by adding an active cooling plate to the heating furnace shelf. This allows testing personnel to effectively and actively control the heating temperature of the distillation flask during the determination of the distillation range of petroleum products, thus overcoming the shortcomings of existing technologies. It prevents low-boiling-point components from excessively vaporizing at unexpected high temperatures, thus avoiding localized thermal decomposition. This ensures that the overall distillation range testing data is free from systematic errors, guaranteeing the accuracy and repeatability of the test results and meeting high-standard testing quality control requirements. Compared with existing technologies, this invention has substantial features and significant progress, and therefore has great potential for promotion and application.

[0059] In the description process of the above instruction manual:

[0060] The terms "this embodiment," "this utility model embodiment," "as shown," "further," etc., refer to specific features, structures, materials, or characteristics described in the embodiment that are included in at least one embodiment of the present utility model. In this specification, the illustrative expressions of the above terms are not necessarily directed at the same embodiment. Moreover, the specific features, structures, materials, or characteristics described can be combined or combined in a suitable manner in any one or more embodiments. Furthermore, without creating contradictions, those skilled in the art can combine or combine the different embodiments and features of the different embodiments described in this specification.

[0061] Finally, it should be noted that:

[0062] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions described in the embodiments of this utility model. Non-essential improvements, adjustments or substitutions made by those skilled in the art based on the contents described in this specification are all within the scope of protection claimed by this utility model.

Claims

1. A distillation range measuring instrument with active cooling function, used for determining the distillation range of petroleum products, comprising a main unit, a graduated cylinder bath, and a heating chamber, wherein, The upper part of the main unit is equipped with a cold bath, which contains a heating element, a temperature sensor, and a stirrer. The lower part of the main unit is equipped with a compressor refrigeration system and electrical control components. The top surface of the graduated cylinder bath is a panel control display system. The lower part of the graduated cylinder bath is a graduated cylinder receiving chamber, which is equipped with a lighting device and a temperature sensor. The upper part of the heating box is equipped with a heating furnace and a lifting platform. The heating furnace is mounted on the lifting platform, and the height of the lifting platform is adjustable via a handle. The lower part of the heating box is equipped with an exhaust device. The heating furnace is equipped with heating chambers and shelves. The heating chambers contain heating wires. The shelves are placed on the heating furnace and have placement holes that match the heating chambers. The placement holes are used to place distillation flasks containing test samples. The characteristic feature is that: The shelf is also provided with an active cooling plate, which is made of thermally conductive material and has through holes that match the mounting holes of the shelf. The active cooling plate also has a refrigerant flow channel inside.

2. The distillation range measuring instrument as described in claim 1, characterized in that: The refrigerant flow channel is a spiral coil surrounding the through hole or a row of parallel pipes arranged around the through hole.

3. The distillation range measuring instrument as described in claim 1, characterized in that: The thermally conductive material is cast iron, steel, copper, or aluminum.

4. The distillation range measuring instrument as described in claim 1, characterized in that: The refrigerant is water or cooled air.

5. The distillation range measuring instrument as described in claim 1, characterized in that: The active cooling plate and the shelf are combined into a single, stacked component.

6. The distillation range measuring instrument as described in claim 1, characterized in that: It also includes a control valve and a refrigerant controller. The control valve is used to control the inlet and outlet of the refrigerant flow channel, and the refrigerant controller is used to control the opening and closing of the control valve and the flow rate and velocity of the refrigerant.

7. The distillation range measuring instrument as described in claim 6, characterized in that: The control valve is a solenoid valve or a pneumatic valve, and the refrigerant controller is a solenoid controller matched with the solenoid valve or a pneumatic controller matched with the pneumatic valve.

8. The distillation range measuring instrument as described in claim 1 or 6, characterized in that: It also includes a cooling plate temperature sensor and a cooling plate temperature display. The cooling plate temperature sensor is disposed on the active cooling plate, and the cooling plate temperature display is disposed on the panel control display system.

9. The distillation range measuring instrument as described in claim 1, characterized in that: It also includes solenoid valves, solenoid controllers, cooling plate temperature sensors, cooling plate temperature displays, and programmable controllers; The solenoid valve is used to control the inlet and outlet of the refrigerant flow channel. The solenoid controller is used to control the opening and closing of the solenoid valve. The cooling plate temperature sensor is installed on the active cooling plate to sense the real-time temperature of the active cooling plate. The cooling plate temperature display is used to display the real-time temperature of the active cooling plate. The program controller is connected to the heating wire, the cooling plate temperature sensor and the solenoid controller. After the real-time temperature of the active cooling plate is sensed and the set control program is run, the input power of the heating wire and the flow rate and velocity of the refrigerant are controlled.

10. The distillation range measuring instrument as described in claim 9, characterized in that: The electromagnetic controller, the cooling plate temperature display, and the program controller are combined to form an active temperature control system for the heating furnace, which is placed on the upper part of the main unit.

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