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Destination:
Pressure reduction block PGB-15NV-2-1,2-OG-U1-SG with gas consumption metering unit KI-STG-100/400 is assigned for purification from contamination and fiscal registration of volume consumption and natural gas pressure reduction from high to average and low values according to state standard GOST 5542. The unit automatically maintains the pressure in required range and switches gas supply off in emergency pressure rising or falling over limited values. The unit is used in gas distributioon and consumption systems
Equipment designation:

Pressure reduction block PGB-15NV-2-1,2-OG-U1-SG with gas consumption metering unit KI-STG-100/400 Technical conditions TU 4859-003-55402257-2009 – pressure reduction block based on regulators RDG-80 and RDG-80V with two outlets for average and lower pressure, with main (operating) and loop lines (with bypass), with maximum operating pressure 1,2 MPa, with gas heating equipment made in U1-type construction, with gas consumption metering unit KI-STG-100/400, produced according to technical conditions TU 4859-003-55402257-2009.
Main technical characteristics
Block is assigned for open-air operating in macroclimate regions with temperate climate in U-type construction and placement category 1 according to GOST 15150.
Estimated snow load is 180 kgforce/m2 corresponds requirments of III territory region, and wind load 48 kgforce/m2 – IV territory region according to SNiP 2.01.07-85.
In the block with technological equipment class of explosion safety of the area corresponds PUE- В-1а, block fire safety category corresponds NPB 105-03 – А.
Main parameters and characteristics of the block should correspond information noted in Table1.

Table 1

Parameters and characteristics designation

Value

1

2

1 Maximum inlet pressure, МPа

1,2

2 Range of setting outlet regulator, МPа

Output 1 Рвых.1

0,0015…0,06

Output 2 Рвых.2

0,06…0,6

3 Total maximum (Qmах= Qmах1вых Qmax2вых) capacity (for gas with density ?=0,73kg/m?), m3/h

5200

4 Switching set range of safety blow-off valve (are provided by changing of spring), кPа

Outlet 1

Spring, established on PSK

 

Spring from the PSK set

 

1,0…5,0

 

5,0…20

Outlet 2

Spring, established on PSK

 

Spring from the PSK set

 

300…700

 

125…300

5 Switching set range of cutoff valve PZK, кPа

Outlet 1

reducing Рвых.1

overdraft Рвых.1

(0,15…0,5)Рвых.1

(1,25…1,5)Рвых.1

Outlet 2

reducing Рвых.2

overdraft Рвых.2

(0,15…0,5)Рвых.2

(1,25…1,5)Рвых.2

6 Gas consumption metering unit

KI-ST-TS-B-100/400-16А-I-M

7 Flow meter

STG-100-400

8 Gas volume corrector

BK-16АI
(1,6 МPа)

9 Metering range Qmin /Qmax

1:30

10 Qmin with Pизб. = 0,0012 МPа, m3/h

13

11 Qmax with Pизб. = 0,0012 МPа, m3/h

400

12 Metering operating pressure range, МPа

0,16…1,6

13 Gas temperature metering range, °С

-30… 50

14 Range of accepted main relative error of volume metering, %

- consumption range from 0,2 Qmax tо Qmax

- consumption range from Qmin tо 0,2 Qmax

 

±1,5

±2,5

15 Acceptable differential pressure on metering complex with maximum consumption Qmax кPа, not more

1,150

16 Maximum differential on filter, кPа, not more

10

17 Gas pressure on the heater, кPа

2,5

18 Rated heating capacity of the heater, kilowatt

2,35

19 Gas consumption on boiler, m3/hour

0,32

21 Dimensions, not more (LxWxH), m

4,53х3,12х3,0

22 Mass, not more, kg

5000

23 Block service life, years, not less

15

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