UUTE dormitory

Contents

Contents:

1. TECHNICAL PARAMETERS OF HEAT SUPPLY SYSTEM

OBJECT

2. EXPLANATORY NOTE

Object characteristic

Calculation and selection of thermal energy metering unit equipment

2.3. Calculation of hydraulic resistances

Main operating characteristics of heat metering unit

2.5 Heat Meter Selection

3. TECHNICAL SPECIFICATIONS OF BISET HEAT METER

4. INSTALLATION INSTRUCTIONS

5. INSTRUCTIONS FOR INSTALLATION OF HEAT METERING UNIT AUTOMATICS

6. HEAT METERING UNIT DISPATCHING

7. ANTI-VANDAL ACTIVITIES

8. SAFETY MEASURES DURING OPERATION

9. NOTE

Technical parameters of the facility heat supply system

Moscow region, pos. White pillars, st. Geologists, house 15.

Thermal loads of systems of a heat consumption at Tokr. = 28 wasps, make:

maximum for heating 0.034 Gcal/h

maximum on WCS 0.079 Gcal/h

Heating System Network Water Temperature Plot:

T1otop. = 95 wasps ;

T2otop. = 70 wasps.

Hot Water System Network Water Temperature Plot:

temperature of Tgvs hot water = 60 wasps ;

temperature of cold water in the summer Thv.=15oS, in the winter =5os.

Explanatory Note

The project provides for the installation of a BIS.T heat meter (Gosstandart certificate No. 8458, State Register of the SI of the Russian Federation No. 2006400 conclusion of the State Energy Supervision Committee of the Russian Federation No. 159-TS) is designed to measure the parameters and flow rate of coolant and the amount of heat in accordance with the "Rules for the accounting of thermal energy and coolant."

The primary converter of the heat meter is selected by the coolant flow rate in the range of speeds optimal for the device operation, taking into account the overall dimensions of the installation place, as well as the diameter of the conditional passage of the heat pipeline.

Required measuring range of coolant volumetric flow rate for heating (0.00641.60) m 3/h. Primary flow transducers with a nominal passage diameter of 25 mm are installed on supply and return pipelines. Thermal transducers with a mounting length of 80 mm are installed on the supply and return pipelines using protective sleeves.

Required measuring range of coolant volumetric flow rate to the GVA system (0.00641.60) m 3/h. On the supply pipeline there is a primary flow converter with a nominal passage diameter of 25 mm, on the circulation pipeline - with a nominal passage diameter of 15 mm (0.00240.60) m3/h. Thermal transducers with a mounting length of 80 mm are installed on supply and circulation pipelines using protective sleeves.

To measure the heat energy consumed for heat supply, the BIS.T heat meter (TS4004421 version) is accepted for installation.

number of flow measurement channels of electromagnetic type = 4;

number of pressure measurement channels = 4;

number of temperature measurement channels = 4;

number of systems (virtual devices) = 2;

RS485 interface.

Technical characteristics of the heat meter

3.1. The full average service life is 12 years. The interval between tests is 4 years.

3.2. According to metrological characteristics, BIS.T correspond to accuracy classes according to MI 216491 "Recommendation. ICG. Heat meters. Requirements for testing, metrological certification, verification, "international recommendation" International recommendation OIML R75: Class 2 for 10 150; Class 4 for 2 10, Heat meters "and European standard EN 1434" Heat Meters ": Class 1.1 150.

3.3. Scope of application of BIS.T heat meter: units for commercial metering of heat and coolant flow at heat sources and consumers, points for commercial metering of water supply and waste water discharge, data collection systems, process control and control.

3.4. The installed BIS.T heat meter consists of the following units: electronic monoblock, primary electromagnetic flow transducers, thermal transducers, pressure sensors, as well as at the request of the customer auxiliary equipment (printer, modem, data transfer adapter, etc.).

3.5. BISG performs the following functions:

measuring the amount of heat consumed in closed and open water heat supply systems for heat consumers;

measurement of volume flow rate and volume of coolant;

measurement of coolant temperature and pressure;

calculation of mass flow rate and mass of coolant taking into account current temperature;

due to the time of standard and abnormal state of BIST, including downtime, malfunctions, output of transducers beyond the limits of regulated metrological characteristics;

recording in archives with a depth of at least 45 days of average hourly values ​ ​ of parameters according to subparagraphs 1) - 5). Archived information is stored when power is turned off for at least 10 years.

3.6. The heat meter provides information in the form of:

code electric output signal in the RS232C interface standard on the amount of heat, masses and mass flow rates, temperatures and pressures of water in supply and return pipelines, operating time, calendar time and date, as well as the factory number of the meter; can be connected to a printer counter having a serial input RS232C, e.g. EPSON LX - 300 + and/or modem;

current values of heat energy, coolant flow rates and volumes (for the verification mode), water temperatures and pressures in supply and return pipelines, meter operating time are displayed on the display of the electronic unit; indication and alarm of fault detected by the self-diagnostics system is performed.

3.10. Performance:

3.10.1. Temperature range of working (measured) medium: from 0 to 150 OS;

3.10.2. Maximum pressure of working (measured) medium: 2.5 MPa;

3.10.3. The range of conductivity of water and aqueous solutions is from 105 to 10 Cm/m.

3.10.4.Air operating temperature range:

- surrounding primary electromagnetic flow transducers from minus 30 to plus 60 OS;

- ambient thermal transducers and pressure sensors in accordance with operational documentation for them;

- surrounding electronic unit BIS.T from plus 5 to plus 55 OS.

3.10.5. Range of working relative air humidity:

- surrounding primary electromagnetic flow transducers from 5 to 95%;

- surrounding thermal transducers in accordance with operational documentation for them;

- surrounding electronic unit BIS.T from 5 to 95%.

3.10.6. Degree of protection of BIS.T heat meter units

- Primary flow converters of e/m type have protection degree IP65. BISV electronic units have the degree of protection IP40.

- Degree of protection of thermal transducers and pressure sensors is given in the corresponding operational documentation for them.

3.11. Electronic unit continuously monitors serviceability of primary converters of flow rate, temperature, pressure and communication lines with them. The diagnostic data is displayed on the indicator.

3.12. Power supply of BIS.T electronic unit is performed from AC network (power is not more than 25 V * A) with voltage 220 + 10% 15% V and frequency (50 + 1) Hz.

Installation Instructions

4.1 When installing the primary converter, it is necessary to align the arrow on the primary converter housing with the direction of the measured medium movement in the pipeline.

4.2 Installation of primary electromagnetic flow converter:

- DO NOT USE PRIMARY FLOW CONVERTER AS MOUNTING ACCESSORY DURING WELDING OF MATING FLANGES OF PIPELINES.

- DO NOT PERFORM WELDING OPERATIONS WHEN PRIMARY CONVERTER IS CONNECTED TO ELECTRONIC UNIT.

4.3 Install the primary transducers only using standard bolts and nuts corresponding to the flanges of the pipeline and the primary converter.

4.4 Flanges of pipelines during installation of the primary converter must be coaxial and plane-parallel to each other.

4.5 In case of possible vibration, the pipeline shall be fixed on the fixed base before, and after the primary converter installation place.

4.6 During installation of primary transducers, free access to terminal blocks shall be provided. The cables of the communication lines shall be fixed in close proximity to the primary transducers in such a way that, when moisture is condensed on the cable wire, it does not fall inside the terminal box.

4.7 At high ambient humidity and/or possibility of flooding of the primary flow transducers installation place, it is necessary to seal the places of cable line insertion into terminal box connectors using heat-resistant silicone sealant (type "Viksint" or similar).

4.8 Mating flanges of pipelines and housing of primary flow transducers must be reliably electrically connected to each other by means of copper braiding.

Instructions for installation of heat metering unit automation

5.1 Installation of the electronic block: the electronic block hung.T is hung on the plate attached to a wall, at installation have to be provided: access to buttons of management, connectors and sockets on a terminal box and convenience of observation of the display.

5.2 Installation of electrical circuits:

Installation of electrical circuits hung.T to carry out according to the scheme of electric connections.

Cables and electrical devices creating electromagnetic fields with frequency of 50 Hz and intensity of more than 40 A/m are not allowed near the communication line between BIS.T units.

Communication line cables for external BIST connections shall be laid in grounded steel pipes. It is allowed to lay cables in grounded metal box.

It is not allowed to lay the inductor power cables and the signal cable of electrodes in one pipe (metal sleeve).

It is not allowed to lay inductor power cables and signal cables from different primary converters in one pipe (metal sleeve).

Cables of communication lines shall be fixed in close proximity to the electronic unit housing. The electronic unit housing must be grounded (busy).

5.3 Connect the communication line between the primary flow converter and the electronic unit with the following cables:

inductors power supply - 2x0.35 mm 2 KMM cable;

signals from electrodes - KMM cable 2x0.35 mm 2;

pressure sensors are connected to the electronic unit using KMM 2x0.35 mm 2;

resistance temperature transducers are connected to the electronic unit by means of KMM 4x0.35 mm 2

Dispatching Heat Metering Node

6.1 Connection of printer and modem: the electronic unit has two interface connectors "PRINTER" and "MODEM." "PRINTER" connector is used for direct output of information to printer.

6.2 "PRINTER" connector is designed for direct (without any intermediate devices) output of printer information. The MODEM connector is used to output information to a computer, modem or data transfer adapter. The connection to the printer and modem is made using the "modem" cable type DB9F - DB25M, the connection to the computer is made using the "nulmodem" cable type DB9F - DB25F. Remote printer and modem are connected to heat meter via communication line made by copper wire of MKES2x0.5, TRP-2-0.04, PKSV2 type or similar. The length of the communication line between the heat meter and the printer, as well as between the heat meter and the computer (modem) is not more than 1000 m. The recommended type of printer is EPSON-LX300 +.

Anti-vandal events

The room of heat metering unit shall be equipped with door DS 199 (884x1885) with locking device.

The electronic unit and printer are installed in locking metal cabinets.

It is envisaged to install a sensor for opening the door of the heat metering unit with connection to the ODS system. Installation of the sensor is provided in the design of the brand "ODS."

Safety measures during operation

8.1. The sources of danger during installation and operation of BISF are electric current, as well as working medium (water), which is under pressure up to 2.5 MPa and with temperature up to 150 OS.

8.2. On the electronic unit there is a clamp marked with the sign "Grounding," which must be connected to the protective grounding circuit.

8.3. There are no life-threatening voltages in the primary electromagnetic flow converter and it does not require protective grounding.

8.4. During operation and maintenance of BISP it is necessary to observe "Intersectoral rules on labor protection (safety rules)" during operation of electrical installations (PET R M0162001, RD153-34.003. 15000).

8.5. It is not allowed to eliminate defects of the primary converter without making sure that there is no pressure in the pipeline.

8.6. Operation of BISR with removed covers of its components is not allowed.

Note

For schematic diagram of power supply of electronic unit, refer to section "Automation of heat metering unit."

Refer to the "EOM" design of the main set of working drawings for the lighting network layout of the heat metering unit room.