Special gas chromatograph for transformer insulation oil-Fornitore globale

Room 602, Building F, Minggu Science and Technology Park, No. 7001 Zhongchun Road, Minhang District, Shanghai

Product Introduction

Product Introduction

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Insulating oil is an essential insulation material in transformers, as well as a cooling oil for transformer windings and iron cores. Transformer oil contains gases such as carbon monoxide, carbon dioxide, methane, ethane, acetylene, ethylene, hydrogen, etc. When the total gas content in the insulating oil is less than 3% (V/V), the insulating oil can achieve good insulation effect. But if the total gas content in the insulating oil is too high, it will significantly reduce the insulation strength of the insulating oil. Moreover, bubbles in the insulating oil may cause partial discharge and generate secondary bubbles when passing through high electric field areas, which can harm the entire insulation circuit and accelerate the aging of the insulating oil, leading to transformer failure or even damage.

Therefore, the country has introduced multiple relevant detection standards for the gas content of insulation oil, including DL/T 703-1999 "Gas Chromatography Method for Determining the Gas Content in Insulation Oil", GB/T 17623-1998 "Gas Chromatography Method for Determining the Content of Dissolved Gas Components in Insulation Oil", DL/T 722-2000 "Guidelines for Analysis and Determination of Dissolved Gas in Transformer Oil", GB/T7252-2001 "Guidelines for Analysis and Determination of Dissolved Gas in Transformer Oil", etc. The gas content in insulation oil has become an inevitable indicator for the power industry to detect.

In response to this, Tate Instruments has launched a transformer insulation oil specific gas chromatograph for insulation oil production enterprises and oil charging equipment manufacturers, equipped with dual FID detectors, TCD detectors, nickel conversion furnaces, packed column samplers, three-way insulation oil specific chromatography columns, etc. It can obtain analysis results for seven gases in insulation oil, including carbon monoxide, carbon dioxide, methane, ethane, acetylene, ethylene, and hydrogen, by injecting them once. It is an essential detection instrument for insulation oil production enterprises and oil charging equipment manufacturers.

Related standards

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DL/T 703-2015 "Gas Chromatography Determination of Gas Content in Insulating Oil"

GB/T 17623-2017 "Determination of dissolved gas components in insulating oil by gas chromatography"

DL/T 722-2014 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil"

GB/T 7252-2001 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil"

Product Parameters

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base stem or root of plants join number	Instrument model	GC2030Plus
	Main purpose	Qualitative and quantitative analysis of organic compounds (inorganic gases)
	Working environment requirement	Temperature requirement: 15 ℃ -35 ℃
		Humidity requirement: 25% -80%
		Power requirements: AC220V ± 10%, 50Hz
	Power requirements	2200W
	External dimensions	For every 1 ℃ change in ambient temperature, the temperature change in the column temperature chamber is less than 0.01 ℃
	weight	Reduce from 350 to 50 ℃ ≤ 8 minutes (room temperature 25 ℃)

host machine	Temperature controlled zone	6-way independent temperature control
	circuit design	Adopting ARM embedded design and internal CAN mode, the temperature control adopts a high-frequency feedback mechanism of 1700 times per second, resulting in higher control accuracy
	monitor	7-inch color touch screen display, switching between Chinese and English, intelligent human-machine dialogue
	injection port	Can be equipped with 3 injectors (filled injection port, split/non split capillary injection port)
	detector	Multiple selection of 4 detectors (FID, TCD, FPD, ECD, NPD, PID) is possible
	Auxiliary sampling device	Optional injection valve, headspace sampler, thermal analysis sampler, automatic sampler, etc
	Chromatography software	Tetchrom ® The fully reverse control network chromatography workstation can automatically obtain the IP and MAC addresses of the chromatograph, and can achieve network self diagnosis. The instrument can be connected to the network to achieve remote software updates, firmware "one click updates" and other functions
	Connection method	Network port connection, can also choose analog output ports such as 485, and can achieve fast communication and connection of DCS online instruments through the MUDBAS (TCP/IP) protocol
	Intelligent	Equipped with automatic access to method files upon startup, self checking. When the chromatograph reaches the startup conditions, it automatically completes heating, ignition, preparation, automatic valve switching, sampling, post-processing, and uploads data results to the designated DCS, making it easy to meet project requirements for online monitoring
	Method storage and method sequence	The instrument has a large capacity storage card of 8GB inside, which can store a large number of chromatographic methods; The method sequence can be freely edited to determine different projects or to implement actions such as automatic shutdown after testing, reducing the need for manual and ineffective waiting
	power-off protection	The instrument adopts a power-off protection function, which automatically saves the set data at the moment of power failure, and can automatically heat up and ignite the instrument when it is powered on
	automation	Supporting 8 external events, each event independently completes the required parameter settings and execution
	Quick function	The instrument has quick testing functions such as one key preparation, one key cooling, one key operation, and one key ignition, greatly saving customers' ineffective waiting time
	expand	zuiWith an additional 4-channel input/output design, it is easy to start the chromatograph or external events through external devices. Output modes: IO passive contacts or 24V output

column box	Temperature rise and fall	Equipped with rapid heating and cooling functions
	oven temperature	5 ℃ to 450 ℃ above room temperature (up to -50 ℃ when using liquid CO2 and -99 ℃ when using liquid nitrogen)
	TPD	21st level 21 platform
	zuiHigh heating rate	120℃ / min
	Temperature setting accuracy	0.1℃
	precision	0.02℃
	Temperature Stability	For every 1 ℃ change in ambient temperature, the temperature change in the column temperature chamber is less than 0.01 ℃
	Cooling rate	Reduce from 350 to 50 ℃ ≤ 8 minutes (room temperature 25 ℃)
	over temperature protection	When the temperature inside the column temperature box is too high, activate the automatic protection function
	zuiLarge running time	9999.99 minutes

advance appearance system interconnected system	split/splitless Capillary column injection port	Purpose: Used for injection into capillary chromatography columns, often used for trace impurity determination


	Injection valve	High temperature tracing valve box:zuiMulti controllable 4-way multi way valve,zuiUp to 225 degrees

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Basic parameters

Four independent temperature controlled detectors can be installed simultaneously, and the gas of the detectors is controlled by a manual pressure control system. The data acquisition rate of the detectors iszuiUp to 250Hz (4ms)

Hydrogen flame ionization

detector

（FID）

zuiHigh operating temperature: 420 ℃

Method: Dual channel method

Automatic ignition function: using military grade igniters, the ignition wire adopts a non exposed design, and the service life is 100 times that of conventional ignition wires, with a 10-year warranty

Detection limit: 5.0 × 10^-12G/s (n-hexadecane)

Baseline noise: ≤ 2 × 10^-14A

Baseline drift: ≤ 1 × 10^-13A/30 min (after the instrument stabilizes for 2 hours)

Dynamic range: 10⁷

thermal conductivity detector

（TCD）

zuiHigh operating temperature: 300 ℃

Method: Dual arm microporous hot wire design

Sensitivity: S value ≥ 8000mv.ml/mg (benzene)

Baseline noise: ≤ 10UV

Baseline drift: ≤ 50UV/30min

Dynamic range: 10⁵

colour table control make soft piece	Tetchrom chromatography workstation	Suitable for operating systems such as Win7 and Win10, it reads sampling data from CDF files that comply with A/A (American Society for Analysis) standards
	data acquisition	A self-developed anti control network chromatography workstation that enables simultaneous acquisition and control of three channel data (software copyright certificate provided)
	Rights Management	Can achieve three-level permission management for operation and maintenance personnel, instrument users, and equipment administrators
	data transmission	By using Ethernet communication, the data throughput is faster and the bidirectional handshake frequency is higher. The chromatography system with completely independent intellectual property rights has a standard interface of MODBUS/TCP, which can be easily integrated with DCS
	sensitivity	1uV*s， Dynamic range: 220
	Network Communications	Support wireless network communication connection
	Unmanned function	Support various functions required for automated online monitoring, such as automatic startup, automatic temperature rise, automatic ignition, automatic bridge current opening, automatic sample collection, automatic data processing, and automatic generation of data trend charts
	automatic calibration	For customized projects, automatic zeroing, calibration, calibration and other functions can be achieved, as well as scheduled calibration
	system safety	Fully supports FDA-21CFR Part 11 authentication (electronic signature, resume, user password), System Applicability Testing (SST), and System Authentication Tools (IQ/OQ)
	Batch processing function	The batch processing function enables the control of the instrument, automatic sampler sequence acquisition, automatic integration correction, and output report to be completed in one go, simplifying daily tedious analysis
	data comparison	Powerful post-processing functions, including spectrum comparison, recalibration, and data input and output, are all available. "Special Attention Online" can obtain analysis results online without waiting for the end of data collection

Product Characteristics

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1. The configuration plan for a dedicated gas chromatograph for insulation includes dual FID detectors, TCD detectors, nickel conversion furnaces, packed column samplers, and three dedicated chromatography columns for insulation oil. Analysis results can be obtained by injecting seven gases, namely carbon monoxide, carbon dioxide, methane, ethane, acetylene, ethylene, and hydrogen, into the insulation oil at once.

2. New production process, redesigned the air supply path and internal structure inside the instrument, more reasonable component layout, reduced component signal interference, improved detection accuracy, and excellent stability and durability of the equipment.

3. Adopting a 7-inch color touch screen control and a professional chromatograph UI operation interface design, it intuitively reflects the internal temperature values of the injection port, column temperature box, and detector, as well as the values of each detector, and the running time. It has a one click cooling function, and users can set their own detection conditions, making it very convenient to use.

4. The instrument has excellent repeatability. Under the experimental conditions of using an automatic sampler for injection, the repeatability error of the instrument test can reach 2%, which is better than the 3% specified by the national standard.

5. The column temperature box adopts a six channel independent temperature control system, an automatic rear door opening system, a 21 stage 21 platform program temperature rise, fast temperature rise/fall speed, and a temperature control accuracy of 0.1 ℃, making the equipment capable of large-scale sample analysis.

6. It can be directly connected to the computer and operated through the PC network version chromatography workstation software（zuiSupports up to 253 units, enabling program control of instrument injection ports, column temperature chambers, and detector temperature rise and fall. Under the condition that the customer is equipped with an automatic injection valve (or automatic sampler), it is possible to achieve a series of testing processes such as unmanned instrument operation, automatic temperature rise and ignition of the instrument, automatic loading method, and automatic calculation of test results, meeting the requirements of online testing.

7. The Internet of Things chromatograph technology, with built-in IP protocol stack, can upload test data to the computer of the on-site laboratory, department heads and superior leaders through the corporate LAN or the Internet, so that each department can monitor the operation of the instrument and test results in real time. It can directly connect with the manufacturer through the Internet to realize remote diagnosis of gas chromatograph, remote program update, etc.

Software Interface

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PC based network version chromatography workstation software for instrument operation（zuiSupports up to 253 units, enabling program control of instrument injection ports, column temperature chambers, and detector temperature rise and fall. Under the condition that the customer is equipped with an automatic injection valve (or automatic sampler), it is possible to achieve a series of testing processes such as unmanned instrument operation, automatic heating and ignition of the instrument, automatic loading method, and automatic calculation of test results

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Chromatogram peak chart

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