JX-8100 type soda water sampling and analysis device

JX-8100 type soda water sampling and analysis device

The steam water sampling device is used for centralized and continuous sampling of water and steam in thermal power generation (heating) systems, and chemical analysis and monitoring of the samples are carried out through supporting instruments and microcomputers to ensure the reliable operation of the generator set. The developed and produced device has been widely used in 12MW, 25MW, 30MW, and 125MW units and has received high praise from users. Three of the main components have been awarded national patents and one "Star of Invention and Innovation Technology Award" by the China National Branch of the United Nations Technology Information Promotion System.

Main Features

1. Reasonable system design. The cooling system, pressure reducing system, protection system, and sewage system form the core of the device, ensuring the reliable operation of chemical instruments.

2. Clever structure. The thermal frame or wet plate, which adopts a three coordinate framework structure and has obtained national patents, is uniformly arranged in the X direction according to the sampling points. On the Y-Z plane corresponding to each sampling point in the X direction, pipelines and components are arranged according to the system design requirements, making the entire device compact in structure, small in volume, and easy to operate and maintain.

3. Advanced components. The cooler and pressure reducing valve that have obtained national patents have advanced domestic level.

Main technical parameters

1. Working pressure of high-pressure pipeline system: ≤ 32MPa

2. Sample outlet temperature: cooling water temperature+1.5 ℃

3. Sample outlet flow rate: 0~3500ml/min

4. Sample outlet pressure: 0.1~0.4MPa

Characteristics of Low Temperature Sampling Rack

1. Front closed and rear open cabinet structure, all chemical instruments are fixed on the panel in a reasonable embedded manner.

2. Low pressure pipelines, components, and detachable meter transmitters are all arranged with MKLMLM on the back of the skeleton.

3. A practical and feasible reagent rack has been designed for different instruments, which has been greatly welcomed by chemical operators in power plants.

4. The internal pedals, pipelines, and wires of the skeleton are arranged in a hierarchical manner.

5. The profile is made by bending cold-rolled steel plates, with a beautiful and lightweight frame.

6. The entire device has a simple and beautiful appearance, and is easy to maintain and repair.

Characteristics of High Temperature and High Pressure Rack

1. To complete the depressurization and initial cooling of high-pressure and high-temperature water vapor samples, the high-temperature and high-pressure rack consists of a high-temperature sewage system, a temperature and pressure reduction system, and a sample water switching system.

2. Including components such as high-temperature and high-pressure shut-off valves, coolers, buffer high-pressure filters, and axial force reducing valves. The overall structural design adopts the principle of three coordinate system design to coordinate the complex process diagram.

Characteristics of high-temperature sewage discharge system

After the sample water enters the sampling system through the primary door of the sampling device, one of the samples is directly discharged to the high-temperature and high-pressure discharge main pipe. This high-pressure discharge pipe is strictly prohibited from being connected to the low-pressure discharge pipe to prevent high-pressure discharge water from flowing into the low-pressure pipeline. This design ensures complete and effective discharge of the sampling device.

Characteristics of temperature and pressure reduction system

After entering the sampling system through the primary valve of the device, the sample water flows directly into the cyclone and vortex tube cooler through a high-temperature and high-pressure shut-off valve, cooling the sample water temperature to ≤ 40 ℃. Then, the sample water pressure is reduced to 0.5MPa through a stainless steel pressure reducing valve, while meeting the specified sample water flow rate requirements.

Characteristics of High Temperature and High Pressure Stop Valve

1. On the basis of introducing technology, the company has developed stainless steel globe valves that are resistant to high temperature and high pressure.

2. The valve body is made of high temperature resistant OCr18Ni12Mo2Ti material, and the valve disc is sealed with imported cobalt based alloy head. The specially designed flexible graphite packing and suitable heat treatment method effectively solve a series of problems such as intergranular corrosion of stainless steel material at high temperature, biting of the same material, and different thermal expansion coefficients between threaded pairs, fully ensuring the advantages of good high temperature and high pressure resistance, strong anti erosion ability, long service life, and small opening torque of the valve.

3. In addition to welding and fitting, our company has also developed a special ball joint connection method for valve connection, which can eliminate the tedious welding required for valve replacement and does not have to have high precision requirements for connecting steel pipes like fitting connection.

Characteristics of pressure reducing valve

1. There are 9 types of threaded channel pressure reducing valves from GF1 to GF9, with the commonly used type being GF8, known as the adjustable threaded channel pressure reducing valve, and GF9, known as the fully automatic constant flow pressure reducing valve, suitable for peak shaving units (both of which have obtained national patents).

2. After passing through GF8, the pressure of the sample water drops below 0.4 MPa.

3. Adjusting flow rate: Rotate the handle within the range of 720 degrees to obtain a stable flow rate of 0-3500ml/min, completely solving the problem of overly sensitive flow rate adjustment and difficult control of flow rate (while GF8 can be adjusted by rotating within the range of 720 degrees, making flow rate easy to control); Unstable traffic (while GF8 traffic does not change over time after being adjusted); Unable to obtain high flow rate (while GF8 flow regulation can reach up to 3500ml/min).

4. At a pressure of 3MPa, a starting flow rate of 50ml/min can be obtained, which is convenient for furnace testing and debugging.

5. The adjustment handle feels particularly good, with a switch torque of less than 0.05 N * m

6. The service life is over 5 years.

7. Adopting a flexible connection, each working component can be disassembled and disassembled, making loading, unloading, and cleaning very convenient.

Characteristics of the cooler

1. One of the key components of the sampling device is the cooler, and our company's developed "Vortex and Vortex Tube Cooler" has obtained a national patent. This cooler has astonishing heat transfer efficiency, far exceeding traditional coolers by at least twice. For saturated steam or superheated steam samples, cooling water temperature, pressure, flow rate, and the measured sample water being condensed to the same sample water flow rate under the same working conditions, the cooling effect of a vortex or scroll type cooler can completely replace two traditional coolers connected in series. The external structure is only a diameter of 108 and a length of 400mm. This cooler is not only particularly suitable for high-temperature sample water pipelines, but also can reduce the cost of the entire device. Make it have particularly strong market competitiveness compared to similar products.

2. The spiral tube of this cooler is made of stainless steel tube cold rolled. It consists of an inner spiral and an outer spiral double layer, which are installed together in a cylinder. The special process technology eliminates the internal stress generated by the cold rolled tube, and the service life can reach more than 5 years.

3. The sample water inside the outer spiral tube of the cooler undergoes heat exchange in the cooling water that moves in a spiral motion, while the sample water inside the inner spiral tube undergoes heat exchange in the cooling water that moves in a vortex motion. The two types of cooling water are cleverly matched to flow in one cooler. Obviously, this cooler has excellent forced convection heat transfer performance, which can also make its corresponding structural dimensions smaller, so that the water vapor sampling device will not significantly increase in volume due to the increase in the number of sampling channels and water vapor quality monitoring parameters of large capacity thermal power units, and also reduce the amount of maintenance and repair. For the characteristics that generally require cooling by two or more coolers, our company only needs one TR4 type cooler to meet the requirements. This cooler has been widely used in major power plants for many years and has received high praise.

Main features of thermostat

The thermostat is designed and manufactured based on the principle of secondary heat exchange. The sample water continuously passes through the spiral tube of the cooler, and the refrigerant water enters and exits the cooler through the device's circulating pump to cool the sample water. To ensure that the outlet temperature of each sample water is the same and the inlet and outlet temperatures of each cooling water are the same, each cooling water inlet and outlet is equipped with a ball valve. The outlet temperature of the sample water can be adjusted by adjusting the flow rate of the refrigerant water. At the same time, the operation of the circulating pump can make the temperature of the refrigerant water in the evaporator water tank uniform without stirring. If required by the user, the device can also be equipped with a heating system.

1. The device uses high-power, water-cooled imported compressors for refrigeration, and the refrigeration system has overpressure and overcurrent protection, resulting in high equipment efficiency and strong reliability.

2. The patented technology of our company's spiral tube flow cooler is applied to perform secondary cooling on the sample water, with adjustable refrigerant water inlet volume, solving the problem of different inlet temperatures for each sample water and the same outlet temperature requirements.

3. Adopting a fully automatic computer control box, the operating system and mechanical system can be installed separately, with temperature digital display, achieving fully automatic control of the device

4. The appearance of the device can be customized according to requirements.

Main technical parameters of thermostat