CN105912054B - The temperature control system and its working method of a kind of oil chromatography on-line equipment cabinet and application - Google Patents

Abstract

The invention relates to a temperature control system for an oil chromatographic on-line device cabinet and its working method and application. The temperature control system of the oil chromatography online detection device of the present invention includes a temperature control terminal and a control module; the temperature control terminal is a mesh formed by cross-connecting straps, and temperature sensors and/or fans are arranged on the cross nodes of the straps; An electric heating wire is provided inlaid in the band; the highest temperature among the temperature thresholds and the lowest temperature among the temperature thresholds are stored in the control module. The temperature control system of the oil chromatography on-line detection device of the present invention realizes local temperature control of the device through a temperature control unit, has high adjustment efficiency, strong pertinence, and saves resources.

Description

A temperature control system of an oil chromatography on-line device cabinet and its working method and application

Technical field:

The invention relates to a temperature control system of an oil chromatography on-line device cabinet and its working method and application, belonging to the technical field of temperature control of an oil chromatography on-line device.

technical background:

The oil chromatography online device cabinet is an online monitoring device that can automatically complete the sampling, chromatographic analysis, and data upload of insulating oil in transformers. There are nitrogen cylinders, oil sample pipelines, chromatographic analyzers and data transmission devices in the cabinet. The oil chromatography online device cabinet is usually installed near the outdoor transformer. According to the working temperature requirements of various devices in the cabinet, it is necessary to ensure that the ambient temperature in the cabinet, especially the temperature of the nitrogen cylinder is controlled within the range of -10 ~ 40 ° C. If the ambient temperature exceeds the normal The working temperature range will affect the normal operation of each component in the cabinet, reduce its working life, and even cause the online device to stop running.

At present, the oil chromatography on-line device cabinets on the market do not have a temperature control device, only a fan is installed in the cabinet, and its power supply is connected in series with the power supply of the device cabinet. When the on-line device cabinet starts to work, the cooling fan starts to run. This temperature control method only has a cooling effect, and cannot accurately cool down the cabinet, often causing the temperature of the gas cylinder to exceed the allowable range of the test. The chromatographic test requires precise test conditions. The current temperature control device not only cannot stabilize the temperature of the gas cylinder, but also Affect the test results and cause problems in hidden danger investigation. In addition, my country has a vast territory and a large temperature gap, especially in the north with four distinct seasons. The annual temperature is distributed between -40°C and 40°C, and is often accompanied by extreme weather such as rain, snow, haze, and strong winds. The oil chromatography online device The cabinet often has abnormal data transmission and related devices stop working, etc., requiring on-site inspection and maintenance by staff, which wastes manpower and material resources and reduces the stability of the oil chromatography online device cabinet.

Chinese patent CN203243620U discloses a transformer oil chromatographic on-line monitoring device cabinet, the inside of which is provided with an air-conditioning component for adjusting the temperature inside the cabinet. The cost of temperature control through the air conditioner is high, and the air conditioner is not suitable for working under extreme conditions, which reduces the stability of the entire device and has low practicability; in addition, the device cannot realize precise control of the temperature of the oil chromatography online monitoring device.

Invention content:

Aiming at the deficiencies of the prior art, the invention provides a temperature control system for an oil chromatography on-line device cabinet.

The present invention also provides a method for controlling the temperature of the oil chromatography on-line device cabinet by using the above-mentioned system.

The present invention also provides a method for applying the above-mentioned temperature control system of the oil chromatography on-line device cabinet to the nitrogen cylinder.

Technical scheme of the present invention:

A temperature control system for an oil chromatography on-line detection device cabinet, including a temperature control terminal and a control module; the temperature control terminal is a mesh formed by cross-connecting straps, and temperature sensors and/or fans are arranged on the cross nodes of the straps; An electric heating wire is provided inlaid in the band; a temperature threshold is stored in the control module.

Preferably, every four intersection nodes are sequentially connected by straps to form a temperature control unit, each temperature control unit is respectively connected to the control module, and each temperature control unit is provided with a temperature sensor and a fan.

Preferably, the signal wire of the temperature sensor and the power wire of the fan are connected to the control module through the inside of the strap respectively; the heating wire is connected to the control module through the inside of the strap.

Preferably, a clock module and a storage module are arranged in the control module, and the time threshold is stored in the storage module. The clock module counts the time when the control module issues instructions.

Preferably, an alarm module is arranged in the control module.

Preferably, the strap is an elastic strap. The elastic strap makes the temperature control terminal close to the device under test, realizing precise control of the device under test.

Preferably, the temperature control system of the oil chromatography online detection device further includes a display connected to the control module. The monitor displays the cloud map of the temperature distribution of each part of the surface of the measured device in real time, intuitively and in real time reflecting the surface temperature of the device.

A method for controlling the temperature of an oil chromatography on-line device cabinet using the above system, comprising the following steps:

1) The temperature sensor measures the real-time temperature of the device under test every time t and uploads the real-time temperature to the control module;

2) The control module compares the real-time temperature with the highest temperature in the temperature threshold and the lowest temperature in the temperature threshold;

A. If the real-time temperature is less than or equal to the lowest temperature in the temperature threshold, the control module controls to turn on the heating wire in the corresponding temperature control unit; the heating wire heats the device under test until the real-time temperature uploaded by the temperature sensor is greater than the lowest temperature in the temperature threshold ;

B. If the real-time temperature is greater than or equal to the highest temperature in the temperature threshold, the control module controls to turn on the fan in the corresponding temperature control unit; the fan cools down the device under test until the real-time temperature uploaded by the temperature sensor is lower than the highest temperature in the temperature threshold;

C. If the real-time temperature is between the highest temperature in the temperature threshold and the lowest temperature in the temperature threshold, the control module does not issue an instruction.

Preferably, the highest temperature among the temperature thresholds and the lowest temperature among the temperature thresholds are 40°C and -10°C, respectively.

Preferably, the method for controlling the temperature of the oil chromatography online device cabinet includes the step of comparing the working time: the clock module records the working time of the heating wire as _t1 , and the clock module records the working time of the fan as _t2 ; if _t1 or _t2 If it is greater than the time threshold, the control module judges that the corresponding temperature control unit is out of order and issues an alarm.

Further preferably, if the failure rate of the temperature control unit exceeds 60%, the control module determines that the temperature adjustment fails and sends an alarm. When the failure rate of the temperature control unit exceeds a certain value, the alarm is issued, which is suitable for equipment with low precision requirements and prevents the alarm from being too sensitive.

Preferably, the control method of the control module on the temperature regulation terminal is a PID fuzzy control method.

Preferably, the method for temperature control of an oil chromatography online device cabinet includes the step of displaying a temperature distribution nephogram; the monitor displays the temperature distribution nephogram on the surface of the measured device in real time.

A method for applying the temperature control system of the above-mentioned oil chromatography on-line device cabinet to the nitrogen cylinder, comprising the following steps: butt the ends of the temperature control terminal, and set the socket on the side wall of the nitrogen cylinder.

The beneficial effects of the present invention are:

1. The temperature control system of the oil chromatography online detection device cabinet of the present invention provides an automatic control device that integrates functions such as temperature measurement, transmission, analysis, temperature control, temperature adjustment and system failure alarm; realizes the oil chromatography online device cabinet The intelligent adjustment of temperature keeps the temperature in the cabinet within the normal range and ensures the accuracy of oil chromatography test results;

2. The temperature control system of the oil chromatography online detection device cabinet of the present invention realizes local temperature control of the device through the temperature control unit, which has high adjustment efficiency, strong pertinence, and resource saving;

3. The temperature control system of the oil chromatography on-line detection device cabinet of the present invention has both cooling and heating functions, high temperature adjustment flexibility, simple structure and high stability.

Description of drawings

Fig. 1 is a structural schematic diagram of the temperature regulation terminal of the present invention;

Fig. 2 is a schematic structural view of the temperature control unit of the present invention;

Fig. 3 is the flow chart of the method of the temperature control system of the oil chromatography on-line device cabinet of the present invention;

4 is a schematic diagram of applying the temperature control system of the oil chromatography on-line device cabinet of the present invention to a nitrogen cylinder;

Among them, 1. temperature sensor; 2. fan; 3. strap.

Specific implementation method

The present invention will be further described below through the embodiments and in conjunction with the accompanying drawings, but not limited thereto.

As shown in Figure 1.

Example 1

A temperature control system for an oil chromatography on-line detection device cabinet, including a temperature control terminal and a control module; the temperature control terminal is a mesh formed by cross-connecting straps 3, and a temperature sensor 1 and a fan 2 are arranged on the cross nodes of the straps 3 ; Heating wires are inlaid in the strap 3 ; temperature thresholds are stored in the control module.

Example 2

The temperature control system of the online detection device for oil chromatography as described in Example 1 is different in that a temperature sensor 1 or a fan 2 is provided on the intersection node of the strap 3 .

Example 3

as shown in picture 2.

The temperature control system of the oil chromatography on-line detection device cabinet as described in Example 1, the difference is that every four intersection nodes are sequentially connected by straps 3 to form a temperature control unit, and each temperature control unit is connected to the control module respectively, and each A temperature sensor 1 and a fan 2 are arranged in each temperature control unit.

Example 4

The temperature control system of the oil chromatography on-line detection device cabinet as described in Example 1, the difference is that the signal line of the temperature sensor 1 and the power line of the fan 2 pass through the strap 3 to connect with the control module; The strap 3 is internally connected with the control module.

Example 5

The temperature control system of the oil chromatography on-line detection device cabinet as described in Example 1 is different in that the control module is provided with a clock module, an alarm module and a storage module, and the storage module stores a time threshold. The clock module counts the time when the control module issues instructions.

Example 6

The temperature control system of the oil chromatography on-line detection device cabinet as described in Example 1 is different in that the strap 3 is an elastic strap. The elastic strap makes the temperature control terminal close to the device under test, realizing precise control of the device under test.

Example 7

The temperature control system of the cabinet of the oil chromatography on-line detection device described in Example 1 is different in that the temperature control system of the oil chromatography on-line detection device further includes a display connected to the control module. The monitor displays the cloud map of the temperature distribution of each part of the surface of the measured device in real time, intuitively and in real time reflecting the surface temperature of the device.

Example 8

As shown in Figure 3.

A method for controlling the temperature of an oil chromatography online device cabinet using the system described in Embodiment 1-7, comprising the following steps:

1) The temperature sensor 1 measures the real-time temperature of the device under test every 5s and uploads the real-time temperature to the control module;

2) The control module compares the real-time temperature with the highest temperature in the temperature threshold and the lowest temperature in the temperature threshold; wherein, the highest temperature in the temperature threshold and the lowest temperature in the temperature threshold are 40°C and -10°C respectively.

A. If the real-time temperature is less than or equal to the lowest temperature in the temperature threshold, the control module controls to turn on the heating wire in the corresponding temperature control unit; the heating wire heats the device under test until the real-time temperature uploaded by temperature sensor 1 is greater than the lowest temperature threshold temperature;

B. If the real-time temperature is greater than or equal to the highest temperature in the temperature threshold, the control module controls to turn on the fan 2 in the corresponding temperature control unit; the fan 2 cools down the device under test until the real-time temperature uploaded by the temperature sensor 1 is lower than the highest temperature threshold temperature;

C. If the real-time temperature is between the highest temperature in the temperature threshold and the lowest temperature in the temperature threshold, the control module does not issue an instruction.

Example 9

As described in Example 8, the method for controlling the temperature of the oil chromatography on-line device cabinet, the difference is that the method for controlling the temperature of the oil chromatography on-line device cabinet includes the step of comparing the working time: the clock module records the working time of the heating wire as t ₁ , The clock module records the working time of the fan as t ₂ ; if t ₁ or t ₂ is greater than the time threshold, the control module judges that the corresponding temperature control unit is out of order and sends out an alarm.

Example 10

The method for controlling the temperature of the oil chromatography on-line equipment cabinet as described in Embodiment 9, the difference is that if the failure rate of the temperature control unit exceeds 60%, the control module determines that the temperature adjustment fails and sends an alarm. When the failure rate of the temperature control unit exceeds a certain value, the alarm is issued, which is suitable for equipment with low precision requirements and prevents the alarm from being too sensitive.

Example 11

The method for temperature control of the oil chromatography online device cabinet described in Embodiment 8 is different in that the control method of the control module for the temperature regulation terminal is a PID fuzzy control method.

Example 12

The method for temperature control of an oil chromatography on-line device cabinet as described in Example 8, the difference is that the method for controlling the temperature of an oil chromatography on-line device cabinet includes the step of displaying a temperature distribution nephogram; the monitor displays the temperature distribution nephogram on the surface of the measured device in real time.

Example 13

As shown in Figure 4.

A method for applying the temperature control system of the oil chromatography on-line device cabinet described in Examples 1-7 to the nitrogen cylinder, comprising the following steps: butt the ends of the temperature control terminal, and set the socket on the side wall of the nitrogen cylinder.

Claims (8)

1. a kind of temperature control system of oil chromatography on-line measuring device cabinet, which is characterized in that including temperature regulation terminal and control mould Block；It is the screen cloth that bandage interconnection is formed that temperature, which regulates and controls terminal, be provided on the crossover node of bandage temperature sensor and/or Fan；It is inlayed in bandage and is provided with heating wire；Temperature threshold is stored in control module；Every four crossover nodes by bandage according to Secondary to connect and compose temperature conditioning unit, each temperature conditioning unit is connect with control module respectively, and temperature biography is provided in each temperature conditioning unit Sensor and fan；The oil chromatography on-line measuring device temperature control system further includes the display connecting with control module；Control mould It is provided with clock module, alarm module and memory module in block, is stored with time threshold in memory module；The bandage is elasticity Bandage.

2. the temperature control system of oil chromatography on-line measuring device cabinet according to claim 1, which is characterized in that temperature sensor Signal wire and the power supply line of fan be each passed through inside bandage and connect with control module；Heating wire passes through inside bandage and control Module connection.

3. a kind of carry out the temperature controlled method of oil chromatography on-line equipment cabinet using system described in claim 1, which is characterized in that Including steps are as follows：

1）Temperature sensor every time t measurement primary measured device real time temperature and by real time temperature upload control module；

2）Control module carries out real time temperature with the minimum temperature in the maximum temperature and temperature threshold in temperature threshold respectively It compares；

If A, real time temperature is less than or equal to the minimum temperature in temperature threshold, control module control is opened in corresponding temperature conditioning unit Heating wire；Heating wire heats tested device, until the real time temperature that temperature sensor uploads is greater than in temperature threshold Minimum temperature；

If B, real time temperature is more than or equal to the maximum temperature in temperature threshold, control module control is opened in corresponding temperature conditioning unit Fan；Fan cools down to tested device, until the real time temperature that temperature sensor uploads is less than in temperature threshold most High-temperature；

If C, real time temperature is between the minimum temperature in the maximum temperature and temperature threshold in temperature threshold, control module is not Issue instruction.

4. the temperature controlled method of oil chromatography on-line equipment cabinet according to claim 3, which is characterized in that oil chromatography is traditional thread binding The temperature controlled method of cabinet is set, includes the steps that the comparison work time：The working time that clock module records heating wire is t₁, when The working time that clock module records fan is t₂；If t₁Or t₂Greater than time threshold, then control module judges corresponding temperature control list First failure simultaneously issues alarm.

5. the temperature controlled method of oil chromatography on-line equipment cabinet according to claim 4, which is characterized in that if temperature conditioning unit Failure rate is more than 60%, then control module determines that temperature adjusts failure and issues alarm.

6. the temperature controlled method of oil chromatography on-line equipment cabinet according to claim 3, which is characterized in that control module is to temperature The control method of degree regulation terminal is PID fuzzy control method.

7. the temperature controlled method of oil chromatography on-line equipment cabinet according to claim 3, which is characterized in that oil chromatography is traditional thread binding The temperature controlled method of cabinet is set, includes the steps that displays temperature cloud charts；Display real-time display is measured apparatus surface Temperature Distribution cloud atlas.

8. a kind of method that the temperature control system by oil chromatography on-line measuring device cabinet as claimed in claim 1 or 2 is applied to nitrogen cylinder, Including steps are as follows：By the end docking of temperature regulation terminal, socket is arranged on the side wall of nitrogen cylinder.