High Temperature and High Pressure Power Station of Welding

• Temperature: Ordinary Temperature
• Certification: GS, CE, ISO9001
• Media: Gas, Oil, Water
• Standard: Standard
• Connection Mode: Flange
• Power: Hydraulic
• Material: Stainless Steel
• Type: Single Seater
• Size: DN65-DN250
• Transport Package: Wooden Case
• Specification: DN65-DN250
• Trademark: HUIZHENG
• Origin: China
• HS Code: 8481804090
• Production Capacity: 3000

Product Description

product description

High-temperature and high-pressure power station gate valves are also called power station special valves, which are mainly used in the pipelines of various systems in thermal power stations to cut off or connect pipeline media. Applicable medium: non-corrosive medium such as water and steam. Compared with other valve products, power station valves are characterized by high temperature and high pressure, unique self-sealing design, the higher the pressure, the more reliable the sealing. Due to the special performance, technical characteristics and working conditions, the product has formed characteristics that other products cannot replace.


High-pressure power station gate valve use

Installed on water and steam pipelines as opening and closing devices.


Brief introduction of gate valve structure of high pressure power station
1. It adopts pressure self-tightening sealing structure, elastic gate, and the branch pipes at both ends are welded.

2. The sealing surface of the valve seat is made of cobalt-based cemented carbide plasma spray welding, which has good wear resistance and scratch resistance.

The disc sealing surface is hardened and nitrided.

3. The surface of the valve stem is treated with corrosion-resistant nitriding, which has good corrosion resistance and scratch resistance.

4. The opening and closing of the valve is controlled by an electric device. The electric device is equipped with a dedicated motor, a reducer, a torque control mechanism, an on-site operating mechanism, a hand, and an electric switching mechanism. In addition to local operation, it can also be operated remotely. .

Structural advantages of high-pressure power station gate valve:
High temperature and high pressure power station gate valves use temperature 450-570ºC, pressure PN1.6-70.0, nominal diameter 15mm-300mm Material: 1Cr5Mo, 12CrMorV, ZG12CrMoV are widely used in steel, metallurgy, chemical industry, electric power, energy power plants and other facilities.


Technical advantages of gate valve for high-pressure power station
1. The shell adopts two process options of forging and casting, with smooth appearance and uniform organization, which can meet the requirements of high temperature and high pressure; a full range of fully forged steel gate valves can be provided according to user needs;

2. Special materials are matched to ensure high hardness and poor hardness of the sealing surface; precision grinding, smooth and clean like a mirror, wear-resistant and corrosion-resistant, and effectively extend the service life;

3. The back seal design effectively protects the seal packing and prevents dripping;

4. Multi-channel testing such as high-pressure water intensity, high-pressure gas intensity, non-destructive testing, etc., to fully control the quality of pressure parts;

5. The surface of the valve stem is precision ground and hardened, which is resistant to scratches and corrosion, effectively reducing the opening and closing torque and making the operation easier;

6. The use of special corrosion-inhibiting packing structure design, temperature and pressure resistance, no corrosion, automatic lubrication, reduce opening and closing friction, avoid corrosion to the surface of the valve stem, and avoid leakage;

7. Two-way pressure-bearing seal design to meet the demanding requirements of various special working conditions;

8. Strict manual matching and research to ensure that the two-sided sealing surface coincides above 90%, and achieve bubble-level factory seal detection;

9. The unique elastic groove design of the gate of Z60 series automatically compensates for processing errors, adapts to high temperature conditions, and avoids seizure; Z62Y series is a double gate design, the gate automatically corrects processing errors, and always maintains 100% fit of the sealing surface. Particularly convenient for users to maintain on site;

10. The valve cover is designed with self-tightening seal, the higher the pressure, the more reliable the seal;


Main connection size and material

Property and specifiecation
Product type PN(MPa)Nominal pressure		(MPa)Test pressure		(MPa) Working pressure	(ºC) Working temperature	Appicable medium
		Sheel test	/ Seal test
Z960Y-250	25	37.5	27.5	-	≤425	,,Water,steam
Z960Y-320	32	48.0	36.0	-	≤425
Z960Y-P54100	-	30.0	22.0	P5410	≤540	Steam
Z960Y-P54170	-	48.0	36.0	P5417	≤540

 

DNNominal diameter	(mm)Main external and connecting dimensions					Electric dewice	(kg)Weight
	d	L	H	L1	L2
Z960Y-250
100	84	406	1164	437	277	DZW45	234
125	100	483	1402	437	277	DZW60	343
175	158	711	1650	554	309	DZW180	638
225	200	864	1650	554	309	DZW180	654
300	280	1067	2106	764	398	DZW350	1973
Z960Y-320
100	96	533	1236	437	277	DZW60	291
125	118	610	1302	437	277	DZW60	315
150	148	762	1403	526	283	DZW90	672
175	148	762	1650	554	309	DZW180	684
225	222	1041	1650	554	309	DZW180	696
Z960Y-P54100V
175	148	762	1650	554	309	DZW180	683
225	222	1041	1650	554	309	DZW180	704
250	222	1041	1795	554	309	DZW180	1214
300	294	1245	2080	554	309	DZW250	2125
Z960Y-P54170V
125	98	630	1230	437	277	DZW60	312
225	186	1060	1680	554	309	DZW180	1401
300	278	1397	2265	764		DZW500	2834
325	310	1448	2265	690	398	DZW500	2632
350	338	1550	2536	715		DZWC-4	5591

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