Customized shaft seal water flow meter

Customized shaft seal water flow meterModel classification and selection

1. By sealing type

• SHD (Double Mechanical Seal)Equipped with pressure control knob, no pressure gauge (customer provided)

2. According to the connection method

• Hose connection (Φ 10/Φ 12 hose, optional 1/4 ', 3/8', 1/2 'connectors).

• Threaded connection (G/NPT 1/4 '~1/2' internal thread).

• Card sleeve connection (suitable for industrial hard pipes).

3. According to installation method

• S-shaped floor bracket: suitable for stable installation on the ground.

• B-type cantilever bracket: saves space and can be fixed on the side wall of the equipment.

4. Attachment extensionFilter (G) is equipped for high impurity working conditions, and check valve (V) needs to be installed to prevent backflow.

Working principle and status diagnosis

1. working principleThe cooling water flows through the inlet distribution plate float measuring tube, and the float moves under the fluid thrust. When stable, the white circular ring points to the corresponding flow scale; The pressurized water flows through the outlet into the shaft seal to achieve cooling and lubrication.

2. State diagnosis logic

• Normal: The flow rate and pressure are consistent with the target values.

• Leakage: Flow rate ↑+pressure ↓.

• Blockage: Flow rate ↓+pressure ↑.

• Water supply failure: flow rate ↓+pressure ↓.

Key points for installation and maintenance

1. Chengde Shenghe Intelligent Shaft Seal Water Flow MeterInstallation specifications

• Priority should be given to horizontal installation to ensure free movement of the float and avoid interference of bubbles with readings.

• Install a filter before the entrance to prevent impurities from blocking the measuring tube or sealing surface.

• The alarm line should be wired correctly according to the voltage type to ensure stable signal transmission.

2. Chengde Shenghe Intelligent Shaft Seal Water Flow Meterroutine maintenance

• Regularly check the flexibility of the float, and if it is stuck, clean the transparent measuring tube online (without cutting off the water).

• Calibrate the traffic alarm threshold monthly to avoid false positives/false negatives.

• Quarterly inspection of bow valves and joints to prevent water leakage or blockage.

3. Fault handling

• Float unresponsive: Check if the filter is clogged and if the water circuit is vented.

• Abnormal pressure: Check the water supply source with a single seal, adjust the pressure knob with a double seal, and investigate pipeline leaks.

• Alarm false triggering: recalibrate the alarm value, check the wiring and power stability.

Selection and procurement suggestions

1. First, confirm the type of equipment seal (single/double mechanical seal), the required flow range (such as 0-6 L/min commonly used for pump shaft seals), and the pressure rating (working pressure+safety margin ≥ 1.2 times).

2. Select the connection method (hose/thread/sleeve) according to the on-site pipeline, and choose the cantilever bracket due to limited space.

3. Media containing particles or impurities must be equipped with filters, and it is recommended to add check valves to prevent backflow during continuous operation.

4. The alarm function needs to be matched with PLC/DCS signal types (AC/DC, normally open/normally closed) to ensure system linkage.