How many types of traps are mounted? What problems should be paid attention to when equipping pipeli

As we all know, the air intake system of protective ventilation is set up next to the secondary entrance, and the entrance and exit of the dust and filtration room are set in a closed passage, separated by a closed door. Because the closed passage can only be closed and isolated to achieve the purpose of anti-virus, so in the case of outdoor poisoning, the protective closed door or closed door of the closed channel shall not be opened - this brings a problem: when the ventilation mode needs to be converted from clean to isolated or from isolated to filtered when the outdoor is poisoned, how should the staff operate the closed valve in order to safely realize the conversion of the ventilation mode.

It is understood that the closed valves on the market of protective products can be divided into two types: manual closed valves and manual electric closed valves according to the driving mode. Manual type airtight valves can only be realized by manually operating the handle...

1.Thermodynamic traps should be installed on horizontal pipes.

2 Float traps must be installed horizontally and arranged outdoors, and necessary antifreeze measures should be taken.

3 Bimetal Disc Traps can be installed horizontally or upright.

4 Pulse traps are typically installed on horizontal pipes with the bonnet facing upwards.

5. The inverted bucket trap should be installed horizontally and not tilted, and the trap inlet valve can be filled with water or opened before starting, and the trap outlet valve can be opened after the condensate is full. When the operation is stopped in winter, the stored water should be discharged in time to avoid freezing and cracking the trap.

6. When the condensate main of the condensate** system is higher than the trap, a check valve should be set behind the trap except for the thermodynamic trap.

The valve should be located in a place that is easy to call, easy to operate, and maintain. Valves on rows of pipes (e.g., pipes entering and exiting devices) should be arranged centrally, and consideration should be given to setting up operating platforms and ladders. The valves on the tung chain jujube of the pipeline are arranged in parallel, and the center line should be as complete as possible.

The net distance between the handwheels should not be less than 10qmm, in order to reduce the pipeline spacing, the valves can be staggered and disassembled;

In many ways, sealed. Level, the total sale of a time and a half will not be clear, to give you a website, inside the news column has a detailed explanation of the valve in the cavity Chang installation instructions. There is a control valve. Gate valve round liquid. Butterfly valves. Ball valves and so on,

Your question is too broad! Many valves have their own auspicious installation requirements! If you want to know, Brother Shen can find a wide banquet to attack me! Shanghai Anti-corrosion Valve Group **** Jin Liqiang will answer for you, and contact me if you have any questions!

Installation location of the trap:

1. The thermodynamic trap should be installed on the horizontal pipeline;

2. The VTON float trap must be installed horizontally, and when it is arranged outdoors, necessary anti-freezing measures should be taken;

3 Bimetal Disc Traps can be installed horizontally or upright.

4 Pulse traps are typically installed on horizontal pipes with the bonnet facing upwards.

5. The inverted bucket trap must be installed horizontally and cannot be tilted, and the trap inlet valve can be filled with water or opened before starting, and the trap outlet valve can be opened after the condensate is full.

Precautions for the use of traps:

1. The trap is a valve that is easily blocked by dirt in the water. When activated, first open the flushometer and flush the pipe.

2. If there is a bypass pipe, the bypass valve can be opened for a short flush. If there is no flushing pipe and bypass VTON trap, you can remove the trap, open the shut-off valve for flushing, then close the shut-off valve, install the trap, and then open the shut-off valve to activate the trap.

3. The parallel trap is not rolled, if the discharge of condensate does not affect the normal operation, it can be flushed in turns. Alternate use by closing the sliding valve before and after the trap, and then opening the stunt valve before and after another trap. You can also open the inspection valve to search, check the working condition of the water valve, if the steam flushes out more, it means that the work is not normal, if there is only drainage, it means that the work is normal.

If the condensate continues to flow out, it indicates that the valve in front and back of the inspection pipe is leaking, and it is necessary to find out which valve is leaking.

4. For the steam trap that does not condensate, the shut-off valve before opening the valve can make the trap work, and whether it works normally or not can be checked from the outlet of the trap. <>

Mechanical traps should be installed horizontally.

When installing a trap, pay attention to the following:

1.The trap should be installed underneath the heating equipment to facilitate the automatic flow of condensate into 2Before installing the trap, steam should be purged to remove the garbage in the pipeline3Install according to the flow direction indicated on the valve body.

4.Mechanical traps should be installed horizontally.

5.When installing traps, it is generally necessary to consider the installation of bypass valves and detection valves6Some traps do not have their own filters, and a Y-shaped filter should be considered7Heat preservation measures should be taken for the trap, and the bare pipe of about 1 meter should be left for the bimetal trap.

Traps can generally be divided into three types according to their working principles: mechanical, thermostatic, and thermodynamic.

Among them, there are only mechanical traps.

Such as: free float® traps; Free semi-float traps; Rod-bearing float traps; Inverted bucket traps must be installed horizontally.

Thermostatic traps.

Such as: bimetal disc traps; diaphragm cassette traps; Bellows traps can be installed in any position.

Thermodynamic traps.

Preferably horizontal. Downwards are also OK. It cannot be tilted upwards.

1. Before installing the trap, be sure to purge the pipeline with pressurized steam to remove the debris in the pipeline.

2. A filter should be installed before the trap to ensure that the trap is not blocked by pipeline debris, and the filter should be cleaned regularly.

3. Valves should be installed before and after the trap to facilitate the trap to be repaired at any time.

4. The flow direction of condensate should be consistent with the arrow sign of the trap installation.

5. The mechanical trap should be installed horizontally, and it can be installed after installation.

First: If you find that the trap is running steam, you should drain the sewage and clean the filter in time, check it frequently according to the actual use, and repair it at any time in case of failure. It should be overhauled at least once a year to remove impurities inside.

Second: the trap is considered a small accessory in the whole steam system, but it has a great impact on the system work and economic operation, so the maintenance and overhaul of the trap is also crucial, and only the important role of the trap in production is fully emphasized.

Third: frequent maintenance, so that the trap is always in good working condition, in order to ensure the best energy saving effect and improve economic benefits.

Steam traps are automatic valves used in steam heating equipment and steam pipelines to automatically remove condensate and air from steam using equipment and steam pipelines, and to prevent steam leakage. So do you need to install a bypass valve on a line with a steam trap? Opinions differ.

Some technicians in the UK do not think that installation is required. Their reasons are:

1. The standby coefficient has been considered when selecting the trap, which can solve the discharge problem of a large amount of condensate when the steam-using equipment is started cold;

2. The installation of bypass valve not only increases investment, but sometimes makes the steam trap unable to function due to leakage of the bypass valve;

3. It is possible to give the operator an intentional or unintentional (the valve is opened and forgotten to close)."Running operation"(i.e. the bypass valve is opened and not closed) opportunity;

4. As for the installation of bypass valves, some people think that it is easy to overhaul, they think that as long as one valve is installed in front and behind. After removing the trap, the front valve of the steam trap can be used to drain the water, and it only takes 5-10 minutes to disassemble and replace, so that the short time will not affect the drainage of the steam-using equipment.

Some Japanese technicians believe that steam traps must be equipped with bypass valves in their piping. Their reasons are:

1. A large amount of condensate and air can be quickly discharged by opening the bypass valve when the cold car of the steam-using equipment is started, which can improve the operation efficiency of the steam-using equipment and prevent the failure caused by "air blockage";

2. In the event of a failure, the condensate can be discharged through the bypass valve;

3. Due to the bypass valve, the standby coefficient of the steam trap can be taken as a smaller value, or the standby coefficient is not considered. This allows for the use of small capacity traps, reducing investment;

4. It is easy to overhaul, and the disadvantage is that the bypass valve needs to increase investment and installation space.

As for the failure of the steam trap to perform its proper function after the leakage of the bypass valve and the opportunity to give the operator the opportunity to "run the steam operation", they believe that this is a problem of the operator's energy-saving ideology and factory management, and the installation of the bypass valve should not be hindered by the weak energy-saving ideology and lax factory management.

Based on years of observation of the steam trap piping system and understanding from the plant's energy-saving personnel, our engineers are generally willing to install bypass valves. After educating the operator about the functions of the trap and the bypass valve and strengthening the awareness of energy saving, there was no problem due to the installation of the bypass valve"Running operation"and other undesirable situations. Therefore, it is also preferred to install bypass valves on the steam trap piping system.

However, it is required to be more managed.

1. The trap should be installed lower than the equipment, which is conducive to drainage, such as being installed under the steam drum or under the precision filter. 2. Install a filter before the trap to prevent debris from clogging. 3. The back pressure of the trap must be lower than the power pressure (inlet air pressure).

When installing a trap, pay attention to the following:

1.The trap should be installed underneath the heating equipment to facilitate the automatic flow of condensate into 2Before installing the trap, steam should be purged to remove the garbage in the pipeline3Install according to the flow direction indicated on the valve body.

4.Mechanical traps should be installed horizontally.

5.When installing traps, it is generally necessary to consider the installation of bypass valves and detection valves6Some traps do not have their own filters, and a Y-shaped filter should be considered7The trap should take insulation measures, and the bimetal trap should leave about 1 meter of bare pipe8、、

At the very least, know the manufacturer and type of trap you have.

For details on trap installation, please refer to the respective instruction manual. Here are the precautions for the installation process.

When it is installed on a rising part.

In general, traps are installed lower than the condensate draining equipment. However, if you want to install the trap higher than the condensate discharge equipment, you will need to install a riser fitting in front of the trap so that the condensate can flow smoothly into the trap. Lift fitting:

Also known as:"Suction joints"。When the condensate discharge is low, it can be used to draw the condensate high and direct it forward.

Outlet side ** tube.

The piping diameter used for the condensate discharged from the trap should have a certain margin, at least to prevent the effects of steam hammer or pressure loss. In addition, when connecting the ** pipe with multiple water collection pipes (return pipes), a certain inflow angle should be created to facilitate the flow of condensate.

When the outlet side piping is flooded.

When condensate is discharged into the drain, the risk of condensate splashing is caused if the drain pipe is directly inserted into the water. In the event that it is necessary to be flooded, a hole should be made in the drain pipe or a vacuum regulator should be installed to prevent the water in the drain from flowing backwards to the trap when the steam stops.

Setup of condensate collection device.

When installing a trap in a steam transfer pipe, a condensate collection device needs to be designed.

In the early stages of ventilation and at high flow rates, it can effectively collect condensate, which helps the trap to work better. If a condensate collection device is not designed, it is easy to cause the condensate to not be discharged, and garbage and limescale to block the inlet.

** of condensate lines at different pressures.

For condensate pipelines with different pressure conditions, it is necessary to design the condensate pipe according to each different pressure, or after installing the flash leg. If high-pressure condensate flows into the low-pressure pipe, the condensate will evaporate again due to the temperature difference of the condensate, resulting in adverse effects such as noise and steam hammer.

Answer]: C knowledge points] The installation location of the Shushizhi water valve. The steam trap stool is installed at the end or low of the steam pipeline, which is mainly used for automatic discharge of condensate in the steam pipeline, preventing steam leakage and draining non-condensable gases such as coarse sensitive air removal, which plays an important role in ensuring the normal operation of the system, preventing the corrosion of condensate to the equipment and the water hammer of the steam-water mixture on the system.

The trap installation method is as follows.

The installation method of the trap is as follows:

1. The roller-on-roll filter should be dismantled briefly before the trap, and the filter should be cleaned regularly in order to ensure that the trap is not blocked by pipeline debris.

2. The trap valve should be installed before and after the trap, which is to facilitate the maintenance of the trap.

3. The flow direction of condensate should be consistent with the arrow sign of the trap installation.

4. The trap should be installed at the lowest place of the equipment outlet, so that the condensate can be discharged in time to avoid steam resistance in the pipeline.

5. If there is no trap installed at the lowest place of the Yuqiao equipment, a reverse elbow (condensate lifting joint) should be added at the lowest position of the water outlet, and the trap should be installed after the condensate level is raised to avoid vapor resistance.

6. If there is condensate after the trap, the outlet pipe of the trap should be connected to the main pipe above the main pipe to reduce back pressure and prevent backflow.