RU113834U1 - STAND FOR CALIBRATING MAINTENANCE NOZZLES - Google Patents

Abstract

A stand for calibrating fuel oil injectors, containing an injection chamber, a system for draining water from the injection chamber, stands with mounting brackets for each calibrated injector installed on the base, systems for supplying atomizing air and water to each nozzle with flow metering units, as well as systems installed in the injection chamber swirling each model torch, registering the parameters of model flares, exhausting the air-droplet medium, automatic collection of signals and control, while the system for registering the parameters of model flares contains a lighting lamp mounted in the injection chamber, mutually perpendicular coordinate rulers with sensors, an optical device, an exhaust system air-droplet medium contains an exhaust duct hermetically installed in the upper part of the injection chamber, connected to the fan, and the automatic signal collection and control system contains a signal collection and control unit connected to the supply systems to each spray nozzle air, water, swirling, registration of parameters of model flares, extraction of air-droplet medium, characterized in that two identical nozzles are installed on a common base at the same height with the possibility of their simultaneous calibration, while the swirling system of each model flame contains hermetically enclosing each calibrated the injector, the intake air box, the cavity of which is connected to the cavity of the injection chamber, the unit for supplying air to the intake air box and to the swirler blades located in the air box, the swirler blade rotation mechanism, each

Description

The utility model relates to a power system, namely, equipment for determining the flow characteristics and spray pattern of liquid fuel nozzles installed in industrial boilers and furnaces, as well as for measuring the parameters of the interaction of torches from two nozzles in a boiler furnace.

Closest to the claimed utility model is a stand for calibration of fuel oil nozzles according to the patent of the Russian Federation for utility model No. 105438, IPC G01F 25/00, 06/10/2011, containing an injection chamber, a system for draining water from the injection chamber, racks with mounting brackets for a calibrated nozzle installed on the basis of a system for supplying atomizing air and water to the nozzle having flow meter assemblies, as well as twisting systems installed in the injection chamber, recording model torch parameters, extracting airborne droplets, and automatic collection signals and control, and the model torch swirling system contains a receiving air box hermetically sealed with a calibrated nozzle, the cavity of which is connected to the cavity of the injection chamber, an air supply unit to the receiving air box and to the swirl blades located in the air box, the swirl mechanism of rotation of the swirl blades, registration system parameters of the model torch contains a lighting lamp mounted in the injection chamber, mutually perpendicular coordinate lines with sensors, optical the device, the exhaust system of the airborne medium contains an exhaust duct sealed in the upper part of the injection chamber connected to the fan, and the automatic signal collection and control system contains a signal collection and control unit connected to the supply systems of the atomizing air, water, and swirling nozzle, registration of model torch parameters, extraction of an airborne medium.

Disadvantages of the famous stand:

1. The inability to determine the spatial geometry of the interaction of two torches from two nozzles.

2. The inability to select two identical nozzles according to the dispersion of the crushing of droplets of fuel oil, taking into account the interaction of two torches from two nozzles.

The inventive utility model is aimed at solving the problem of developing a stand design for calibrating fuel oil nozzles, which provides the possibility of determining the spatial geometry of the interaction of two flares from two fuel oil nozzles, reducing the distortion of the geometric and temperature characteristics of the flames in the furnace volume of the boiler and, as a result, eliminating the burning of fuel oil in the furnace .

The technical result is achieved by the fact that in the stand for calibration of fuel oil nozzles containing an injection chamber, a system for draining water from the injection chamber, racks with mounting brackets for each calibrated nozzle mounted on the base, supply systems for each atomizer of spraying air and water having flow meter assemblies, as well as the twisting systems of each model torch installed in the injection chamber, recording the parameters of model torches, extracting airborne droplets, automatic signal collection and control, etc. and the registration system of the parameters of model torches contains an illuminated lamp mounted in the injection chamber, mutually perpendicular coordinate lines having sensors, an optical device, an air-drop medium extraction system, an exhaust duct sealed in the upper part of the injection chamber connected to a fan, and the system automatic signal collection and control unit contains a signal collection and control unit connected to supply systems for each nozzle of spraying air, water, twisting According to the claimed utility model, two identical nozzles with the possibility of simultaneous calibration are installed on a common base at the same height, and the twisting system of each model torch contains a receiving air box tightly enclosing each calibrated nozzle , the cavity of which is connected to the cavity of the injection chamber, an air supply unit to the intake air box and to the swirl blades located in the air box e rotation mechanism swirler vanes, wherein each nozzle further tarirumoy installed air nozzle vane swirler are connected to further inputted rotation mechanism of nozzle vanes of the swirler air.

The essence of the utility model is illustrated by drawings, where figure 1 schematically shows a stand for calibration of fuel oil nozzles; in FIG. 2 shows an injection chamber (section AA in FIG. 1); figure 3 shows the location of the two calibrated fuel oil nozzles (section BB in figure 1).

1, the main nodes of the stand are shown by thick lines, and electrical connections between the primary sensors and the electronic signal acquisition and control unit are shown by thin lines. Figure 2 - electrical connection conditionally not shown. The parts, mechanisms and components of the inventive stand for calibration of fuel oil nozzles are assigned the following positions:

1 - nozzle, 2 - injection chamber, 3 - pipeline for water supply, 4 - flow meter, 5 - thermometer, 6 - pressure gauge, 7 - shut-off and control valve, 8 - electric pump, 9 - flow tank for water, 10 - pan 11 - water drainage system, 12 - pipeline for supplying atomizing air, 13 - air supply unit to the swirl, 14 - intake air box, 15 - swirl blades, 16 - diffuser, 17 - dispersed and swirling air-water mixture, 18 - exhaust duct, 19 - ventilator for extracting airborne droplets, 20 - bracket, 21 - rack, 22 - base, 23 - illuminator naya lamp, 24 - a protective cap, 25 - a video camera, 26 - coordinate rulers, 27 - a swivel blade rotator mechanism, 28 - an electronic signal and control unit, 29 - the direction of the air twist after the swirl, 30 - the direction of the dispersed air-water mixture , 31 - direction of air movement in the intake air box, 32 - blades of the nozzle air swirl, 33 - rotation mechanism of the blades of the nozzle air swirl.

At the inventive stand, mechanical and steam-mechanical nozzles can be calibrated. In mechanical nozzles, fuel oil is sprayed due to pressure and openings in the saw head, in steam-mechanical nozzles - additionally due to the energy of water vapor under pressure.

The steam-mechanical nozzle 1 (Fig. 1) is a barrel tubular part, at one end of which a spray head is mounted on the thread (not indicated in Fig. 1), and at the other end there are nozzles for supplying fuel oil and a spraying agent — steam (in FIG. 1 fitting conditionally not marked).

At the stand, fuel oil was replaced with water, and the spraying agent was replaced with compressed air, the real torch in the furnace was replaced with a model torch at the stand. The stand for calibration of fuel oil nozzles 1 contains an injection chamber 2, at the bottom of which there is a pan 10 for collecting water from the injection system 11 from the injection chamber, a rack 21 with brackets 20 for attaching each calibrated nozzle, mounted on the base 22, and also a supply system for each atomizing nozzle air and water, respectively, including pipelines 12 and 3, flow meters 4, thermometers 5, manometers 6, shut-off and control valves 7. The water supply system to each nozzle 1 is equipped with an electric pump 8 and a flow tank 9.

In the injection chamber 2, systems for twisting each model torch, extracting an airborne medium, automatic signal collection and control, and registering model torch parameters are installed.

The registration system of the model torch parameters comprises a lighting lamp 23 mounted in the injection chamber 2 with a protective cap 24, mutually perpendicular coordinate lines 26 having sensors (not shown conventionally in FIGS. 1 and 2), and an optical device — a video camera 25.

The exhaust system of the airborne droplets from the injection chamber 2 comprises an exhaust duct 18 sealed in its upper part and connected to a fan 19.

The automatic signal collection and control system comprises a signal collection and control unit 28 connected to supply systems for each nozzle 1 of sawing air, water, twisting each model plume, recording parameters of model plumes, drawing an air-drop medium.

In contrast to the known stand for calibrating fuel oil nozzles in the inventive utility model, the injection chamber 2 is configured to simultaneously calibrate two nozzles 1. The twisting system of each model torch contains a receiving air box 14, which cavity is connected to the cavity of the injection chamber 2, tightly enclosing each calibrated nozzle , a unit 13 for supplying air (twisting air) to the receiving air box 14 and to the blades 15 of the swirl located in the receiving air box 14, the mechanism 27 for turning the blades of the swirl Ithel having a diffuser 16. Each tarirumoy injector 1 additionally installed blade 32 of the nozzle air swirler further connected to delivering mechanism 33 rotate the nozzle vanes of the swirler air.

Stand for calibration of fuel oil nozzles works as follows.

Each calibrated nozzle 1 is fixed in brackets 20, which are mounted on racks 21 on a common base 22. The place of passage of each nozzle through the intake air box 14 is sealed. Each nozzle 1 is connected to a spray air supply pipe 12 and a water supply pipe 3, C of the control unit 28 consistently include a fan 19 of an exhaust hood of an airborne medium, a lighting lamp 23, a water drainage system 11, a video camera 28, coordinate ruler sensors 26, an air supply unit 13 to the intake air box 14 and to the blades 15 vortex, Using a valve 7 and an electric pump 8, each sawtable fuel oil nozzle 1 is fed through the pipelines 12 and 3, respectively, with sawing air and a model medium - water. In the nozzle of each nozzle 1, water is crushed into droplets using spraying air and water pressure, and the subsequent swirling of the mixture by the air flow leaving the blades of the swirler 15. Directly in the nozzles 1 themselves, by means of the blades 32, the dispersed air-water mixture is twisted. In the volume of the injection chamber 2, two streams of dispersed air-water mixtures interact with the twist directions 30 and two air streams after twisting on the blades 15 of the swirler in the receiving air ducts 14 with the twist directions 29. Using the video camera 25 and sensors on the coordinate lines 26, record the length and the diameter of the model torches, the diameter of the water particles, which are obtained as a result of crushing water droplets in each nozzle 1 and as a result of the directions of twists 29 and 30. Signals from the video camera 25 and sensors on the co dinatnyh rulers 26 are transmitted via electrical connection to the electronic unit 28 acquisition and control signals, which are also provided the following data: pressure, temperature and flow rate of atomizing air, water and air twist. Based on these signals, the dependences of the flow rate on the pressure of water and air, the diameter of the droplets, the length and diameter of each model plume on the pressure of water and air depending on the directions of twists 29 and 30 in each nozzle 1 are constructed in tabular and graphical form, the optimal angle and directions are selected swirling flows on blades 15 and 32, the consumption and adjustment characteristics of each nozzle are recalculated from the model medium - water to fuel oil.

Claims (1)

A stand for calibrating fuel oil nozzles, containing an injection chamber, a system for draining water from the injection chamber, racks with mounting brackets for each calibrated nozzle mounted on the base, supply systems for each atomizer of spraying air and water having flow units, and also systems installed in the injection chamber twisting each model torch, registering the parameters of model torches, drawing an airborne droplet, automatic signal collection and control, while the model registration system torches contains an illuminating lamp mounted in the injection chamber, mutually perpendicular coordinate lines having sensors, an optical device, an air-droplet exhaust system contains an exhaust duct sealed in the upper part of the injection chamber, connected to a fan, and an automatic signal and control system contains a signal collection and control unit connected to supply systems for each nozzle of spraying air, water, swirling, registration of model torch parameters c, extracts of an airborne medium, characterized in that on a common base at the same height two identical nozzles are installed with the possibility of their simultaneous calibration, while the twisting system of each model torch contains a receiving air box tightly enclosing each calibrated nozzle, the cavity of which is connected to the cavity injection chambers, the air supply unit to the intake air box and to the swirl blades located in the air box, the swivel blades rotation mechanism, and in each iruemoy injector nozzle vanes additionally installed air swirler further connected to rotation mechanism inserted nozzle blades of air swirler.