Burns Hospital Affiliated Hospital of Shanxi Linfen Linfen Steel is attending a hospital burns burns and other diseases. Hot water boiler is essential hospital equipment heat, hot water output can provide disinfection of medical instruments and ward heating demand. With constantly improving our environmental policy, boiler correspondingly introduced more sophisticated Use. Linfen hospital burns to respond positively to the national environmental policy, decided to introduce an environmentally friendly low nitrogen gas specialized technology hot water boilers. Taking into account the special circumstances of the hospital, the boiler should also have the use of safe, clean overall characteristics. Based on the above considerations, finalize the Linfen hospital with burns boiler party cooperation fast, fast is provided by one side of a gas condensing pressure hot water boiler (CWNS2.1-95 / 70-Y.Q).
Non-staff are not allowed to switch the various valves in the boiler room, the smoke damper and electrical switches, undocumented fireman, water quality laboratory personnel are not allowed to operate separately.
With the increasingly broad application of condensing boilers, its technical level, energy conservation, environmental protection advantages are increasingly prominent, users in order to increase the efficiency of enterprises and better energy conservation, effectively reduce emissions, But many enterprises do not know how to choose condensing boiler manufacturers. In order to better ensure boiler quality, users need to select manufacturers from the following aspects of comprehensive evaluation:
1. When selecting the condensing boiler manufacturer, users should first know the technical situation of the manufacturer, and see if the boiler has advanced domestic production technology, such as whether the frequency conversion combustion technology is used to fully burn the combustion material. Whether the boiler is ultra-low carbon fully premixed combustion technology to improve combustion efficiency, whether the boiler uses high-efficiency full condensation heat transfer technology to improve the efficiency, and so on, only the boiler manufacturers with advanced technology, can produce ultra-high cost-effective, Products of good quality and performance.
2. The size of R & D team and the level of R & D directly affect the development of condensing boiler manufacturers, so users should first have a strong R & D team when choosing condensing boiler manufacturers. In addition, powerful manufacturers will be equipped with a sound R & D team mechanism, from R & D production, testing and installation to later debugging and other specialized personnel to complete the work. Users can learn about the R & D team level and team mechanism of the factory through online survey or on-the-spot study.
3. Condensing boiler manufacturers with good service systems usually provide perfect services, and this is also a point that users need to pay attention to when selecting manufacturers, that is, users from planning to purchase equipment to consult manufacturers about equipment questions such as condensing boilers of what specifications are used. How to install, the manufacturer will arrange professional pre-sales specialist and user docking, when the information is finished, customer service personnel will recommend the appropriate type of equipment according to the needs of the user. After the completion of the sales, if the user has questions about the product or failure, you can contact the manufacturer customer service department in time.
A boiler water testing methods) and storage of water samples taken 1, depending on the volume of water analysis items, only a simple analysis of water samples is generally 500 to 1000 ml. 2, the sample container should be filled with water using a rigid glass or plastic bottle. Never use of wood, paper balls, metal plugs and maize. 3, sampling Note Samples should be slowly into the bottle, it can not produce water rippling. When the water sample into the bottle 10 ml shall be left void, or to prevent the water temperature changes, the cork pushed open. When averaged water sample must be taken at the same time under the same conditions. Determination of the hydrogen ion concentration in water (B) PH value of which depends mainly on the carbon dioxide, bicarbonate ion content of between opposing sulfate ions, but also somewhat affected by other ions. Whichever it is usually expressed negative numbers. Symbol "PH". PH = log [H +] measured PH value method has potential method and colorimetry, only the chapter describes the more common potential method. PH value of measured potential method, the potential difference between the solution is indicated in the measurement and reference electrodes difference generated. The potential of the reference electrode is constant, the potential of the indicator electrode with different PH value of the solution is changed. Thus the electromotive force consisting of a battery can be measured accurately with the compensation method. Using PH PH meter can be directly measured value of the solution. The procedures for measuring PH meter may be used, accuracy of 0.01. (Iii) Determination of calcium measured calcium EDTA volumetric method widely used in the PH> 12 in an alkaline solution, by EDTA titration, acidic chrome blue K- Naphthol Green B as an indicator, titration end point from red to blue 1, a reagent filter paper was immersed in Congo red 0.1% Congo red solution, soaked until removed, and then dried in air, and then cut into 1 × 1 cm pieces of about. Ammonium hydroxide - ammonium chloride buffer solution (pH 10.1) was weighed 67.5 g of ammonium chloride dissolved in 200 ml of water, was added 570 ml of ammonium hydroxide diluted with water to 1000 ml. Weigh calcium standard solution bake for 3 hours at 105 ~ 110 ℃ pure carbon 1.2485 g of calcium beaker, calcium carbonate solution to dissolve just finished boiling rush carbon dioxide with dilute hydrochloric acid. After cooling, into 1000 ml flask, diluted with distilled water to the mark. This solution was 0.5 mg per ml of calcium ions. Tetraacetic acid disodium (EDTA) disodium EDTA weighed 2 g, dissolved in 1000 ml of water to dissolve a little heat, pressing calibration method: lessons per ml standard solution containing 0.5 mg of calcium ions 5 to 10 ml, in a dry 250 ml Erlenmeyer flask, diluted with water to about 50 ml, analysis by calibration procedures; calculated equivalent concentration: where: N - equivalent concentration of calcium standard solution consumed V1-- EDTA titration standard EDTA standard solution few ml solution; the total solution milliliters V - C - 1 ml of the number of milligrams of calcium standard solution of calcium; 20.04-- equivalents of calcium. K-- Acid Chrome Blue mixed indicator naphthol green B; 0.5 g, said acid Chrome Blue K with 1 g of naphthol green B, was dissolved in 5 ml of ammonium hydroxide in PH10.1 - ammonium chloride buffer solution (preparation method see the measurement of magnesium), and add a little hydroxylamine hydrochloride, water was added to 100 ml shake. 2, Procedure Pipette 50 ml of water and 100 samples, 20% sodium hydroxide solution was added 2 to 3 ml, acid chrome blue K-- naphthol green B 2 drops of mixed indicator, titrated with EDTA standard solution changed from red to blue is the end note of the consumption of EDTA standard solution, preservation solution for the determination of magnesium. Calcium content of the sample is calculated as follows: wherein V1-- Titration standard solution consumed few ml EDTA; N - equivalent concentration of EDTA standard solution; V - sample volume, ml. (Iv) the PH10 determination of magnesium in the solution to acid chrome blue K- naphthol green B as indicator titration with EDTA standard solution of calcium, magnesium content. It titration end is blue. Then subtracts the subtraction to yield a calcium content and magnesium content. It may be in solution after titration calcium, magnesium measured continuously adjusted PH value. Assay (e) the sulfate (gravimetric method) with barium sulfate to form sulfuric acid in an acidic solution precipitated barium. Obtained from the sulfate content by weight of barium sulphate (sample when large water content, with hydrochloric acid in advance to be evaporated to dryness, the sulfate measured by the steps below to root damage nitrate: 100 ml water samples taken transparent, injection 250 ml beaker, and 1: 1 solution of 2 ml of hydrochloric acid, heated to boiling, hot slowly added under stirring 10 ml of 5% barium chloride solution, incubated for 2 hours on a water bath or sand bath, or overnight, and then quantitative filter paper with a dense, washed with hot distilled water until free from chloride ions (checking with silver nitrate solution) so far. the precipitate was dried together with the filter paper, into constant weight porcelain crucible, carefully ashing furnace set temperature, calcined at 850 deg.] C to constant weight sulfate ion content of the following formula: sulfate (mg / l) = formula weight of precipitated barium sulfate in W-- (mg); V - measured as the volume of water samples . 1.gb6903-1986 standard boiler water and cooling water measured analysis General 2.gb/t14415-1993 boiler water and cooling water 3.gb/t6908-1986 analysis of the solid matter boiler water and cooling water conductivity analysis Determination 4.gb/t6904.1-1986 pot Determination of mercuric nitrate boiler water and cooling water 6.gb/t14419-1993 Analysis 5.gb/t6905.3-1986 boiler water and cooling water chlorides Analysis Analysis water and cooling water ph glass electrode method of measurement Determination of hardness 8.gb/t6909.2-1986 boiler water and cooling water analysis method for measuring hardness 7.gb/t6909.1-1986 boiler water and cooling water Determination of alkalinity high hardness low hardness 9.gb/ Determination t6913.2-1986 boiler water and cooling water analysis Determination of total inorganic phosphate boiler water and cooling water 10.gb/t6913.4-1993 phosphate phosphate analysis