09,22,2026 24 views
From November 12th to 14th, the world's largest nuclear energy event - the 4th China Nuclear High Quality Development Conference 2025 and Shenzhen International Nuclear Energy Industry Innovation Expo (referred to as "Shenzhen Nuclear Expo") will grandly open at the Shenzhen Convention and Exhibition Center (Futian).
Shanghai Koyo Technology Co., Ltd. will once again make a stunning debut with cutting-edge technology and intelligent solutions, booth number: M14-1
We sincerely invite industry colleagues to come and exchange ideas!
Koyo Technology leads the differential pressure revolution
Shanghai Keyang Technology Co., Ltd. was founded in 1992 and listed on the New Third Board at the end of 2013 (stock code: 430334). It focuses on fluid measurement and testing services and is a private high-tech joint-stock enterprise. In 2014, a 16000 square meter Jinshan manufacturing base was built, equipped with international level automation equipment and intelligent manufacturing chain, and initially completed the informationization construction of the industrial chain. Subsidiaries: Koyo Environmental Engineering (Shanghai) Co., Ltd., Shanghai Koyo Water Technology Co., Ltd., Kenweis (Shanghai) Testing Technology Co., Ltd., Jingkai Electronic Technology (Shanghai) Co., Ltd.
The company's main products include: A+K Wente flowmeter, A+K ring wedge flowmeter, A+K rectangular flowmeter, A+K integral flowmeter, A+K heat free flowmeter, A+K ultrasonic flowmeter, A+K ultrasonic Wente flowmeter, A+K electromagnetic flowmeter, etc. It has a flow detection center with DN2-DN2400 water flow calibration devices and DN300 gas flow calibration devices. Thanks to its technological advantages of high precision, high reliability, and adaptability to harsh working conditions, Koyo Technology's products have been widely applied in more than 40 industries both domestically and internationally, with a cumulative production and sales of over 100000 instruments and equipment. Koyo Technology will continue to adhere to the business philosophy of "KeyonTechs, the key lies in technology and service", and constantly pursue excellence.
The company's main new products and technological solutions:
1. A+K Venter flowmeter - the new era of Venturi
Balanced rectifier+Venturi tube - Balanced Venturi (Wente)
• :
• Body length: 2D~3D
• Throttle thickness: 12.7mm~500mm
Wear resistance: coefficient is stable for a long time
Low pressure loss: ≈ 1/4 Δ P
High accuracy: ± 0.3%, ± 0.5%
• Range width: 10:1~30:1
• Straight pipe section: 2D front and 2D back
• Machining: high-precision precision machining
• Cost: Low installation, maintenance, and transportation costs
Application Scenario:
Trade measurement, material ratio, alarm interlocking
• Steam, natural gas, industrial gas, liquid gas, liquid metal
Oil products, raw materials
• Thermal power, air separation, nuclear power, military industry, aerospace, scientific research, shipbuilding
Compressor, blower
Oil and gas, chemical, power, metallurgy, gas
2. A+K ring wedge flowmeter - true redundant symmetrical wedge flowmeter
Wedge flowmeter+Venturi tube - Wedge Venturi (ring wedge)
: Body length: 4D~8D
Ring wedge block: 90 °+passivation design
Beida value: 0.3~0.7
Wear resistance: not easily worn, coefficient stable for a long time
Low pressure loss: 50%~70% Δ P
High accuracy: ± 0.5%
• Range width: 7:1~15:1
• Straight pipe section: front 5D and back 3D
True redundancy: SIS system single table can be independently true redundant
Application Scenario:
• Material ratio, alarm interlock, trade measurement
Coal slurry, black water, grey water, slag water, heavy oil, residual oil, crude oil, wax oil, liquid sulfur
Dirty, viscous, prone to crystallization, liquid-solid two-phase, gas-solid two-phase
Coal chemical industry, oil and gas, chemical industry, electric power, metallurgy, coking
3. A+K rectangular flowmeter - accurate in the center of the square, not exceeding the moment
Basher groove+Venturi tube+wedge - rectangular flowmeter
• : Body length: 5D~10D
• Rectangular wedge block: streamlined, without sharp angles
Beida value: 0.3~0.7
Wear resistance: 3 times more wear-resistant, with long-term stable coefficient
Low pressure loss: 20%~25% Δ P
High precision: ± 0.25%~± 1.0%
• Range width: 10:1~30:1~100:1
• Straight pipe section: Front 1.5D~4D, Rear 0D
• Low pressure loss: high circulation capacity
Application Scenario:
Material ratio, alarm interlock, trade measurement
Coal slurry, black water, grey water, slag water, heavy oil, residual oil, crude oil, wax oil, liquid sulfur
Dirty, viscous, prone to crystallization, coke oven gas, acidic gas, liquid-solid, gas-solid two-phase
Coal chemical industry, oil and gas, chemical industry, electric power, metallurgy, coking
High precision, large range, easy to wear, insufficient straight pipe sections
4. A+K integral differential pressure flowmeter - putting an end to 300 years of leakage
Performance characteristics:
• Body processing: casting, forging, integral processing
• Body structure: pipeline type, welded type, clamp type
• Throttle form: Balance/Wente/Ring wedge/Rectangular/Other optional
• Pressure tapping device: short pressure tapping, silicone oil pressure tapping, direct pressure tapping without heat tracing
Intelligent header: multi parameter, linearization, multi compensation, flow output, alarm settings
High accuracy: 0.3%, 0.5%, 1.0%
• Wide range: 10-30:1 or even higher
Low pressure loss: 1/3 Δ P~1/4 Δ P
• Straight pipe section: front 1-2D, rear 1D
Wear resistance: The coefficient is stable for a long time and has good repeatability
• Interchangeability: Sensors and meter heads can be replaced
• Maintainability: Bluetooth connection, no need to climb high, saves labor, and improves security
Simplify complexity | Control complexity with simplicity
5. A+K heat free differential pressure flowmeter - helping you worry free during winter
Mystery: Medium induced pressure → Silicone oil induced pressure
Temperature tolerance range: Level 1-45 ℃~380 ℃;
Secondary -45 ℃~430 ℃; -45℃~780℃
Lower&higher temperature range: customizable.
Application scenarios without heat tracing:
Renovation project: Flow meter modification without heat tracing device
New project: Direct design of heat tracing free flow meter
Northern regions: frost, condensation, easy crystallization, easy corrosion, easy gasification conditions
Steam flow rate: aqueous medium, raw oil, high-temperature oil, heat transfer oil, molten salt, liquid metal
Thermal, oil and gas, chemical, power, metallurgy, photothermal, cryogenic
Accuracy after accident irradiation: 2.5%
6. A+K Variable Component Flow Meter - Focusing on Large Range Variable Components
The integration of high-precision Wente differential pressure measurement and modern ultrasonic measurement technology has achieved a new type of dual principle flow measurement;
◆ Fully utilizing the advantages of both principles: ultrasonic flowmeter for measuring small and micro flow velocity, and differential pressure flowmeter for measuring high flow velocity;
◆ Solved the problem of ultrasonic flowmeter being easily affected by fluid noise interference at high flow rates, and differential pressure flowmeter experiencing a sharp decrease in accuracy and limited range ratio at low flow rates, almost solving the flow measurement problem of variable component media;
◆ An unprecedented breakthrough has been achieved, maintaining high precision at level 1.0 within a range of up to 1000:1;
◆ Dual principle real-time integration, dynamically obtaining medium density, and outputting mass flow rate.
Performance indicators:
Ø Measuring medium:
Natural gas, coal gas, variable component gas, biphasic medium
Ø Accuracy: ± 1%
Range ratio:>100~1000: 1
Ø Medium temperature:
-20 ℃~60 ℃ (ordinary gas)
Ø Temperature sensor:
-100℃~600℃ :±0.3%
Differential pressure sensor accuracy: ± 0.1%
Ø Pressure sensor accuracy: ± 0.25%
Ø Digital output: RS-485
Ø Static pressure range: 1~30 MPa
Explosion proof safety certification:
Ø National Explosion proof Safety Supervision and Monitoring Station for Instruments and Meters
Ø Explosion proof type: Ex d IIBT6Gb
Explosion proof license number: GYB18.2005X
Application scenarios of ultrasonic Wente flowmeter:
Gas Industry: Management and Measurement of Urban Gas Pressure Regulating Stations
Partition measurement: industrial park, commercial users, residential users
Oil and gas industry: single well metering, dry gas, feed gas, flare gas
Metallurgical coking: blast furnace gas, coke oven gas, converter gas
Environmental protection industry: biogas VOC、 Smoke, oil and gas recovery
Industrial gases: air separation, nitrogen generator, oxygen generator
Solution 1: Four networks in the park - precise measurement and fair handover
(1) Thermal pipeline network - Wente flowmeter (no heat tracing type)/electromagnetic flowmeter
(2) Gas Pipeline Network - Ultrasonic Venter Flow Meter (Ultra Large Range Ratio)
(3) Gas Pipeline Network - Ultrasonic/Venter Flow Meter (Measurement Grade)
(4) Hydraulic pipeline network - electromagnetic flowmeter/water meter (metering level)
Heating pipeline network: Heating company, steam supply and sales business;
▪ Difficulties: Traditional vortex flow meters cannot measure low flow rates, are afraid of vibration, are prone to parameter drift, require a large amount of maintenance, and are difficult to ensure fairness and accuracy in user trade handover;
Gas pipeline network: gas companies, natural gas and gas metering
▪ Pain points: Natural gas users require a large number of range ratio flow meters for intermittent use and zone metering. Pressure regulators and high flow noise in pressure regulating stations can interfere with ultrasonic flow meters, and hydrogen blending in natural gas pipelines and changes in fuel gas composition can cause trade handover errors;
Gas pipeline network: Air separation/gas company, air separation island, gasification island, gas island, raw gas, industrial gas internal metering, trade handover of oxygen, nitrogen, synthesis gas, hydrogen, coal gas, trade handover;
▪ Pain point: There are various types and principles of flow meters, but the standards and measurement principles are inconsistent, resulting in distortion of the overall system measurement data. It is necessary to unify the flow meter standards and types in order to measure accurately and truthfully;
Hydraulic pipeline network: water companies, sewage treatment plants, utility companies
▪ Pain points: high temperature, high pressure, high-precision trade handover, large diameter, large stroke ratio requirements, pipe leakage and damage monitoring;
Solution 2: Energy metering renovation of the entire factory - Extreme Energy Efficiency Project
Wente Flow Meter Plant wide Energy Measurement Transformation - The First Choice for Extreme Energy Efficiency Engineering!
1. Low permanent pressure loss=energy saving
1/3-1/2 of the orifice plate
Equivalent to the pressure loss of the Venturi tube
2. Shorten the front and rear straight pipe sections
According to ISO5167 and other requirements, a long straight pipe section is required before and after the installation of the flowmeter
A+K only requires 2D straight pipe sections in front and back (limit 0.5D), greatly reducing piping requirements
Save space, resources, and reduce the use of pipeline segments
3. High measurement accuracy:
Accuracy: ± 0.30- ± 0.5%
Trade measurement, process control
Provide underlying data support for enterprise greening, digitization, intelligence, etc
Improved process control accuracy: upgrading and optimizing material and energy balance, minimizing process fluctuations, reducing production waste, lowering energy consumption, and reducing pollution emissions
4. Long term stability is good:
Wear resistant throttling components: Over 15 years of on-site use
No movable parts: good long-term stability, no consumables (spare parts), extremely low maintenance costs (maintenance free)
Enhance process stability
Reduce unplanned work stoppages
Save money throughout the entire lifecycle
Solution 3: Upgrade the throttling device throughout the factory - win within a millimeter
Orifice plate exchange balance, nozzle/Venturi exchange Wente, wedge type exchange ring wedge/rectangle, no insulation and heat tracing
1. Replace the balance orifice plate with an orifice plate and add a non heat tracing device
2. Venturi, nozzle vent, equipped with no heat tracing device
3. Wedge shaped exchange ring wedge, rectangular, with no heat tracing device added
Smart nuclear energy, the future is here! Welcome to the Shenzhen Nuclear Expo from November 12th to 14th
Shanghai Koyo Technology Co., Ltd. booth (M14-1)
Visit and exchange.
