CN209432367U - Nuclear power foam control valve suppresses tool - Google Patents

Abstract

The utility model discloses a kind of nuclear power foam control valves to suppress tool, and it includes: that hand lift pumps case that nuclear power foam control valve, which suppresses tool, and the end that nuclear power foam control valve suppresses tool is arranged in；Stainless steel pipes, one end is lifted water pumping case with hand and is fixedly connected, and hand stop valve and vent valve are provided on stainless steel pipes；Three-way connection, three-way connection are connected with the other end of stainless steel pipes, the first high-pressure hose, the second high-pressure hose respectively；Wherein, the end of the first high-pressure hose is provided with the first connector, and the end of the second high-pressure hose is provided with the second connector.The nuclear power foam control valve of the utility model, which is suppressed tool and can be saved, repeatedly to be suppressed and is vented, and is suppressed efficiency to substantially increase, is reduced costs.

Description

Nuclear power foam control valve pressure tool

technical field

The utility model relates to the technical field of nuclear power equipment, in particular to a pressing tool for a nuclear power foam control valve.

Background technique

The function of the foam control valve is to open the valve and spray out foam in case of fire, so as to extinguish the fire in time, so the foam control valve plays a very important role in nuclear power plants. Under normal circumstances, foam control valves need to ensure a high degree of sealing. In case of leakage or spraying by mistake, not only will the foam liquid be consumed, which will affect the fire protection function, but also the sprayed large amount of foam liquid will affect the equipment or operators. Therefore, before the foam control valve is installed and used on site, a pressure test is required to verify the reliability of the valve sealing.

The working principle of the foam control valve is: the medium acts on the diaphragm chamber of the upper diaphragm, thereby exerting force on the sealing ring, and the sealing ring fits with the valve seat to achieve sealing. The lower part of the sealing ring is directly in contact with the foam liquid, and the sealing force needs to overcome the pressure of the foam liquid. According to its working principle, the pressure of the foam control valve is different from that of ordinary valves (the pressure of ordinary valves only needs to be pressured and maintained at the valve inlet, and the seal is reliable if there is no leakage at the outlet). The chamber is pressurized, and the diaphragm chamber is pressurized first. If the medium flows into the valve inlet chamber first, the sealing ring will open and the valve will leak. Actual working conditions on site: When the pressure of the diaphragm chamber and the valve inlet chamber are the same, whether the valve is sealed reliably. The usual solution is to prepare two sets of pressing tools to respectively pressurize the diaphragm chamber and the valve inlet. However, this solution requires two sets of pressurizing pumps and other components, which is costly and has low pressing efficiency.

The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and should not be considered as an acknowledgment or in any form to imply that the information constitutes the prior art already known to those skilled in the art.

Utility model content

The purpose of the utility model is to provide a pressing tool for nuclear power foam control valve, which can save repeated pressing and exhausting, thereby greatly improving the pressing efficiency.

In order to achieve the above object, the utility model provides a nuclear power foam control valve pressing tool. The nuclear power foam control valve pressing tool includes: a hand pump water tank, which is arranged at the end of the nuclear power foam control valve pressing tool; a stainless steel pipe, one end of which is It is fixedly connected with the water tank of the hand pump, and the stainless steel pipe is equipped with a manual shut-off valve and an air release valve; the three-way joint is connected with the other end of the stainless steel pipe, the first high-pressure hose, and the second high-pressure hose respectively ; Wherein, the end of the first high-pressure hose is provided with a first joint, and the end of the second high-pressure hose is provided with a second joint.

In a preferred embodiment, the first joint is connected to the diaphragm chamber on the foam control valve, and the second joint is connected to the inlet of the valve.

In a preferred embodiment, the length of the first high-pressure hose is shorter than the length of the second high-pressure hose, so that the medium can first flow into the upper diaphragm chamber during compression.

In a preferred embodiment, one end of the stainless steel pipe is fixedly connected to the water tank of the hand pump by welding, and the tee joint is fixedly connected to the other end of the stainless steel pipe by welding.

In a preferred embodiment, the first high-pressure hose, the second high-pressure hose and the three-way joint are respectively fixed by stainless steel clamps.

In a preferred embodiment, the first joint and the second joint are processed with external threads for connecting with the internal threads of the upper diaphragm chamber and the valve inlet respectively.

In a preferred embodiment, the first joint and the second joint are sealed by wrapping a magic cord.

In a preferred embodiment, the first joint and the second joint are respectively fixed to the first high-pressure hose and the second high-pressure hose by stainless steel clamps.

In a preferred embodiment, a pressure gauge is also installed on the stainless steel pipe near the tee joint.

Compared with the prior art, the nuclear power foam control valve pressing tool according to the utility model has the following advantages: the pressing tool can use a set of tools to complete the pressing of the foam control valve, thereby reducing the cost. Since a hand pump is directly used for pressurization, the diaphragm chamber and the valve inlet chamber can be successively pressurized, thereby eliminating repeated pressurization and exhaust, and the pressurization efficiency is high.

Description of drawings

Fig. 1 is a schematic structural view of a pressure tool for a nuclear power foam control valve according to an embodiment of the present invention.

Explanation of main reference signs:

1-hand pump water tank, 11-hand pump, 12, water tank, 2-stainless steel pipe, 3-tee joint, 4-first high-pressure hose, 5-second high-pressure hose, 6-manual stop valve, 7-air release valve, 8-first joint, 9-second joint, 10-pressure gauge.

Detailed ways

The specific embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific embodiments.

Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

As shown in Figure 1, the nuclear power foam control valve pressure tool according to the preferred embodiment of the utility model includes: hand pump water tank 1, stainless steel pipe 2, tee joint 3, first high-pressure hose 4, second high-pressure hose 5. Wherein, the hand pump water tank 1 is arranged at the end of the nuclear power foam control valve pressing tool. One end of the stainless steel pipeline 2 is fixedly connected with the water tank 1 of the hand pump, and the stainless steel pipeline 2 is provided with a manual stop valve 6 and an air release valve 7 . The three-way joint 3 is connected with the other end of the stainless steel pipe 2 , the first high-pressure hose 4 and the second high-pressure hose 5 respectively. Wherein, the end of the first high-pressure hose 4 is provided with a first joint 8 , and the end of the second high-pressure hose 5 is provided with a second joint 9 .

In the above solution, the first joint 8 is connected to the upper diaphragm chamber of the foam control valve, and the second joint 9 is connected to the inlet of the valve. The first joint 8 and the second joint 9 are processed with external threads for connecting with the internal threads of the upper diaphragm chamber and the valve inlet respectively. The first joint 8 and the second joint 9 are sealed by winding a magic cord.

In a preferred embodiment, the length of the first high-pressure hose 8 is shorter than the length of the second high-pressure hose 9, so that the medium can flow into the upper diaphragm chamber first when pressing.

In a preferred embodiment, one end of the stainless steel pipe 2 is fixedly connected to the hand pump water tank 1 by welding, and the tee joint 3 is fixedly connected to the other end of the stainless steel pipe 2 by welding.

In a preferred embodiment, the first high-pressure hose 4 , the second high-pressure hose 5 and the tee joint 3 are respectively fixed by stainless steel clamps.

In a preferred embodiment, the first joint 8 and the second joint 9 are respectively fixed to the first high-pressure hose 4 and the second high-pressure hose 5 through stainless steel clamps.

In a preferred embodiment, a pressure gauge 10 is also installed on the stainless steel pipe 2 near the tee joint 3 .

When using the nuclear power foam control valve pressing tool of the utility model, connect the pressing tool and the foam control valve, fill the water tank of the hand pump, open the manual shut-off valve, close the air release valve, shake the hand to lift the pump, and the water will flow successively Access to diaphragm chamber and valve inlet chamber. Open the purge valve to purge the gas from the line. Then close the bleed valve, shake the hand to lift the pump, and then open the bleed valve, and repeat this until the water flowing out of the bleed valve is in a continuous linear flow to confirm that the gas in the pipeline is completely discharged. At this time, close the air release valve and shake the hand pump. When the pressure gauge reading reaches the working pressure of the foam control valve, close the manual stop valve and keep the pressure for 10 minutes. If there is no liquid flowing out of the valve outlet, it proves that the valve is well sealed. If liquid flows out, it means that the valve seal is not tight.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various exemplary embodiments of the present invention and various Different options and changes. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (9)

1. a kind of nuclear power foam control valve suppresses tool, which is characterized in that the nuclear power foam control valve suppresses tool and includes:

Hand lift pumps case, and the end that the nuclear power foam control valve suppresses tool is arranged in；

Stainless steel pipes, one end is lifted water pumping case with the hand and is fixedly connected, and is provided on the stainless steel pipes manually Shut-off valve and vent valve；

Three-way connection, the three-way connection are soft with the other end of the stainless steel pipes, the first high-pressure hose, the second high pressure respectively Pipe is connected；

Wherein, the end of first high-pressure hose is provided with the first connector, and the end of second high-pressure hose is provided with Two connectors.

2. nuclear power foam control valve as described in claim 1 suppresses tool, which is characterized in that first connector and foam control Valve upper diaphragm chamber processed is connected, and second connector is connected with valve inlet.

3. nuclear power foam control valve as claimed in claim 2 suppresses tool, which is characterized in that the length of first high-pressure hose Degree is shorter than the length of second high-pressure hose, so that medium can first flow into the upper diaphragm chamber when suppressing.

4. nuclear power foam control valve as described in claim 1 suppresses tool, which is characterized in that one end of the stainless steel pipes It is lifted with the hand and pumps case using being fixedly connected by the way of welding, and the three-way connection and the stainless steel pipes is another End is fixedly connected by the way of welding.

5. nuclear power foam control valve as described in claim 1 suppresses tool, which is characterized in that first high-pressure hose, institute The second high-pressure hose is stated to fix by stainless steel lathe dog respectively with the three-way connection.

6. nuclear power foam control valve as claimed in claim 2 suppresses tool, which is characterized in that first connector and described Two connectors are machined with external screw thread, for being connected respectively with the internal screw thread of the upper diaphragm chamber and the valve inlet.

7. nuclear power foam control valve as claimed in claim 6 suppresses tool, which is characterized in that first connector and described Two connectors pass through winding evil spirit rope sealing.

8. nuclear power foam control valve as described in claim 1 suppresses tool, which is characterized in that first connector, described Two connectors are fixed with first high-pressure hose, second high-pressure hose by stainless steel lathe dog respectively.

9. nuclear power foam control valve as described in claim 1 suppresses tool, which is characterized in that close on the stainless steel pipes The position of the three-way connection is also equipped with pressure gauge.