CN219224647U

CN219224647U - Metering detection device for measuring distillation range and automatic distillation range measuring instrument

Info

Publication number: CN219224647U
Application number: CN202223266976.2U
Authority: CN
Inventors: 岳项阳
Original assignee: Qingyang Dairuite Oil Instruments Co ltd
Current assignee: Qingyang Dairuite Oil Instruments Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-20
Anticipated expiration: 2032-12-07

Abstract

The utility model relates to the technical field of distillation range measurement, in particular to a metering detection device for measuring the distillation range and an automatic distillation range measuring instrument, wherein the metering detection device for measuring the distillation range comprises a pressure weighing meter which is arranged at the bottom of a measuring cylinder and is used for weighing condensate in the measuring cylinder; the volume metering device is arranged on one side of the measuring cylinder and is used for tracking the liquid level of condensate in the measuring cylinder; the liquid drop counter is arranged at the top of the measuring cylinder and positioned below the condensing pipe and is used for detecting the liquid drop quantity of condensate; the pressure weighing meter, the volume metering device and the liquid drop counter are all connected with the control system through electric signals, and are controlled, analyzed and calculated by the control system. The utility model integrates the volume method and the weight method, satisfies the detection of transparent and dark color samples, does not need to be provided with two devices, and reduces the detection cost.

Description

Metering detection device for measuring distillation range and automatic distillation range measuring instrument

Technical Field

The utility model relates to the technical field of distillation range measurement, in particular to a metering and detecting device for measuring the distillation range and an automatic distillation range measuring instrument.

Background

The distillation range is an important quality indicator for assessing the vaporability of liquid fuels. The method can not only explain the boiling point range of the liquid fuel, but also judge the general content of light and heavy components in the oil composition, and has important significance in various aspects such as production, use, storage and the like. The distillation range is measured to determine the number of fractions including gasoline, kerosene, light diesel oil, etc. in crude oil, so as to determine the usage and processing scheme of crude oil.

The existing distillation range measuring and metering detection modes are as follows:

the volume detection method is that 100ml of sample is filled into a distillation flask, the distillation flask is heated by a bottom heating device, a steam temperature value when steam starts to flow out of a first drop through a condensing tube and a final steam temperature maximum value when the sample is evaporated are generated, and a temperature range detected by a thermometer is the distillation range of the sample; in the detection process, the measuring cylinder detects the steam temperature value at each 10ml (namely 9 points), and judges whether the sample accords with the range specified by the national standard requirement, and the sample is qualified;

according to the weight detection method, 100ml of sample is filled into a distillation flask, the distillation flask is heated by a bottom heating device, a steam temperature value when steam starts to flow out of a first drop through a condensing tube and a final steam temperature maximum value when the sample is evaporated, and a temperature range detected by a thermometer is the distillation range of the sample; in the detection process, when the detection temperature is increased by 20 ℃, the weight of the corresponding effluent in the measuring cylinder is judged whether the sample accords with the range specified by the national standard requirement, and the sample is qualified; such as: for crude oil, coal tar, heavy oil, etc., the weight of the effluent corresponding to 10 steam temperature points per 20 ℃ increase of 180-360 ℃ is detected.

The existing automatic distillation range measuring instrument adopts a single metering detection device, and most of the automatic distillation range measuring instrument adopts a volume method to detect and recycle samples, and the measuring instrument can only be used for making transparent or semitransparent samples and cannot be used for testing dark color samples or opaque samples; at present, special gravimetric detection instruments are needed for dark samples or opaque samples, so that two devices are needed to detect the dark samples or opaque samples, and detection cost is increased.

Disclosure of Invention

The utility model aims to solve the technical problems existing in the prior art. Therefore, the utility model provides a metering detection device for measuring the distillation range and an automatic distillation range measuring instrument, which integrate a volume method and a weight method into a whole, thereby meeting the detection of transparent and dark color samples.

The technical scheme adopted for solving the technical problems is as follows:

provided is a measurement detection device for measuring a distillation range, which comprises:

the pressure weighing meter is arranged at the bottom of the measuring cylinder and is used for weighing condensate in the measuring cylinder;

the volume metering device is arranged on one side of the measuring cylinder and is used for tracking the liquid level of condensate in the measuring cylinder;

the liquid drop counter is arranged at the top of the measuring cylinder and positioned below the condensing pipe and is used for detecting the liquid drop quantity of condensate;

the pressure weighing meter, the volume metering device and the liquid drop counter are all connected with the control system through electric signals, and are controlled, analyzed and calculated by the control system.

In a preferred embodiment of the present utility model, the volume metering device includes a photoelectric sensor, a support, a guide rail, and a displacement mechanism, where the transmitting end and the receiving end of the photoelectric sensor are separately disposed on two sides of the measuring cylinder through the support, the support is slidably connected with the guide rail, the guide rail is disposed on one side of the measuring cylinder parallel to the measuring cylinder, and the displacement mechanism is fixedly connected with the support and controls the support to move along the direction of the guide rail.

In a preferred embodiment of the present utility model, the displacement mechanism includes a belt assembly and a stepper motor that controls the operation of the belt assembly.

In a preferred embodiment of the present utility model, the photosensor and the stepper motor are both electrically connected to the control system.

The automatic distillation range measuring instrument comprises a heating device, a distillation flask, a condenser pipe, a thermometer, a measuring cylinder and a measuring and detecting device, wherein the measuring and detecting device is based on the measuring and detecting device for the distillation range measurement, and the thermometer and the heating device are electrically connected with a control system.

Compared with the prior art, the utility model has the beneficial effects that: the utility model designs a pressure weighing meter and a volume metering device at the same time, when a transparent or semitransparent sample is detected, the volume metering device is adopted for detection, and when a dark or opaque sample is detected, the pressure weighing meter is adopted for detection; the volume method and the weight method are integrated, two devices are not needed to be configured, and the detection cost is reduced.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

fig. 1 is a schematic diagram of the structure of the measuring and detecting device for measuring the distillation range according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The embodiment provides a metering detection device for measuring the distillation range, which is shown in fig. 1 and comprises a pressure weighing meter 1, a volume metering device 2, a liquid drop counter 3 and a control system 100.

The pressure weighing meter 1 is arranged at the bottom of the measuring cylinder 10 and is used for weighing condensate in the measuring cylinder, the pressure weighing meter 1 is electrically connected with the control system 100, weight data measured by the pressure weighing meter are fed back to the control system and used for realizing automatic control, and the device is suitable for detecting dark color samples or opaque samples.

The volume metering device 2 is arranged on one side of the measuring cylinder 10 and is used for tracking the liquid level of condensate in the measuring cylinder, the volume metering device 2 is electrically connected with the control system 100, the control system 100 controls the volume metering device 2 to track the liquid level, the volume metering device is used for detecting the liquid level of a sample in the measuring cylinder, the control system is used for calculating the volume of the sample in the measuring cylinder, and the volume measuring device is suitable for detecting transparent or semitransparent samples.

The liquid drop counter 3 is arranged at the top of the measuring cylinder 10 and below the condenser pipe 20 and is used for detecting the liquid drop quantity of condensate, and the liquid drop counter 3 is electrically connected with the control system 100 and feeds back the detected liquid drop quantity to the control system in real time. The drop counter in this embodiment is directly applied in the prior art, and will not be described herein.

Example two

On the basis of the first embodiment, the present embodiment further designs the volumetric metering device, as shown in fig. 1, where the volumetric metering device 2 in this embodiment includes a photoelectric sensor 2.1, a support 2.2, a guide rail 2.3, and a displacement mechanism, where the transmitting end 2.1.1 and the receiving end 2.1.2 of the photoelectric sensor 2.1 are separately disposed on two sides of the measuring cylinder 10 through the support 2.2, the support 2.2 is slidably connected with the guide rail 2.3, the guide rail 2.3 is parallel to the measuring cylinder 10 and disposed on one side of the measuring cylinder 10, and the displacement mechanism is fixedly connected with the support 2.2, so as to control the support 2.2 to move along the direction of the guide rail 2.3. Preferably, the displacement mechanism comprises a belt unit 2.4 and a stepping motor 2.5 for controlling the operation of the belt unit 2.4. The photoelectric sensor 2.1 and the stepping motor 2.5 are electrically connected with the control system 100.

The working principle of the volumetric metering device of the embodiment is as follows: first, the step pitch of the stepper motor is set according to the scale of the measuring cylinder, such as: the measuring cylinder with 100ml is adopted, the stepping motor is set to 10000 steps, and the step distance is 0.01ml, so that the volume of the measuring cylinder can be obtained by calculating the step number of the stepping motor through the control system and is displayed on a display screen of the control system; under normal state, there is not condensate in the graduated flask, does not have liquid between photoelectric sensor's transmitting end and the receiving end, and the receiving end can receive the light of transmitting end smoothly, gets into the graduated flask after the steam condensation that distillation sample produced, and the light is under the refraction or/and the reflection of condensate, and the unable normal light of receiving end, control system control step motor moves one step up this moment, so realizes the liquid level tracking of sample.

Example III

The embodiment provides an automatic distillation range tester, including heating device, distillation flask, condenser pipe, thermometer, graduated flask and measurement detection device, measurement detection device adopts the measurement detection device for measurement based on distillation range in embodiment one or embodiment two, thermometer, heating device signal connection control system.

The principle of distillation range measurement in this example: detecting the number of liquid drops by a liquid drop counter, and recording the temperature displayed by a thermometer when the 1 st liquid drop is distilled; until the sample is evaporated, selecting the highest value of the last steam temperature recorded by the thermometer, wherein the temperature range is the distillation range of the sample. For the volumetric detection method: and detecting the steam temperature value of the measuring cylinder at every 10ml (namely 9 points) by using a volume metering device, and judging whether the sample meets the range specified by the national standard requirement, and if so, judging that the sample is qualified. For the weight detection method, the weight of the corresponding effluent in the measuring cylinder is detected by using the pressure weighing meter when the temperature is increased by 20 ℃, and whether the sample meets the range specified by the national standard requirement is judged, and the sample is qualified.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims

1. A measurement and detection device for measuring a distillation range, comprising:

2. The metering detection device for distillation range measurement according to claim 1, wherein the volume metering device comprises a photoelectric sensor, a bracket, a guide rail and a displacement mechanism, wherein a transmitting end and a receiving end of the photoelectric sensor are respectively arranged on two sides of the measuring cylinder through the bracket, the bracket is in sliding connection with the guide rail, the guide rail is arranged on one side of the measuring cylinder in parallel with the measuring cylinder, and the displacement mechanism is fixedly connected with the bracket and controls the bracket to move along the direction of the guide rail.

3. The measurement and detection device for measuring a distillation range according to claim 2, wherein the displacement mechanism comprises a belt unit and a stepping motor for controlling the operation of the belt unit.

4. The measurement and detection device for measurement of distillation ranges according to claim 3, wherein said photosensor and said stepping motor are electrically connected to said control system.

5. An automatic distillation range tester is characterized by comprising a heating device, a distillation flask, a condenser pipe, a thermometer, a measuring cylinder and a metering detection device, wherein the metering detection device adopts the metering detection device for measuring the distillation range according to any one of claims 1 to 4, and the thermometer and the heating device are electrically connected with a control system.