CN218625902U - Fire-fighting water pipeline overhauls drainage and suppresses test interface arrangement - Google Patents

Abstract

The utility model belongs to the technical field of pumped-storage power stations, and in particular relates to an interface device for maintenance and drainage of fire-fighting water pipelines and pressure testing; One end of the pipe is connected, the other end of the connecting short pipe is provided with an external thread and the other end of the connecting short pipe is threadedly connected with the drain valve, the side wall of the connecting short pipe is provided with a pressure measuring hole, and one end of the pressure measuring pipe is connected to the drain valve. The pressure hole is connected, and the other end of the pressure measuring tube is connected with a pressure measuring main pipe. The pressure measuring main pipe is provided with a main outlet valve of the pressure measuring pipe, a pressure interface, a pressure measurement valve and a pressure gauge, and a pressure valve is provided on the pressure measurement interface. , the pressure measuring valve and the pressure gauge are respectively arranged at both ends of the pressure measuring main pipe; the utility model integrates the functions of drainage, pressing, water testing and pressure measuring, and can save space.

Description

An interface device for maintenance, drainage and pressure test of fire water pipeline

technical field

The utility model belongs to the technical field of pumped-storage power stations, and in particular relates to a fire-fighting pipeline maintenance drainage and pressure interface device.

Background technique

The fire water supply system is to store and provide sufficient fire water volume and water pressure for the building fire water supply system to eliminate fires caused by accidents, so as to achieve timely and avoid greater losses to our property. When overhauling the fire-fighting water pipeline, it is necessary to drain the water in the fire-fighting water pipeline before the air-tightness maintenance of the pipeline can be carried out. The fire-fighting water supply system is equipped with a special drainage device to adapt to the fire-fighting water supply system. The water supply pipeline shall be regularly inspected and unscheduled maintenance work.

The underground workshop of Baoquan Pumped Storage Power Station is affected by the spatial layout. The fire water supply system does not have a special drainage device. During the maintenance of the pipeline system, the drainage needs to be drained by external drainage equipment. Therefore, it is necessary to change the original pipeline mechanism and change The original pipeline structure is likely to cause the water flow in the pipeline to overflow, causing adverse effects on the operation of the surrounding electrical equipment. At the same time, after the fire water maintenance, in order to ensure that the fire water pipeline can be used normally, it is generally necessary to carry out a pressure test on the fire pipeline. When doing the pressure test, you need to use the pressure interface, but there is no special interface in the water supply system, which brings a lot of inconvenience to the pressure test. Therefore, in view of the current deficiencies in the fire water pipeline water supply system of Baoquan Pumped Storage Power Station, there is an urgent need for an interface device that can not only facilitate the drainage of the fire water pipeline during maintenance, but also perform pressure tests on the fire water pipeline after maintenance. .

Utility model content

Aiming at the problem that the existing pumped storage power station is inconvenient for maintenance and drainage of fire water pipelines and pressure test after maintenance, the utility model provides a device for maintenance drainage and pressure interface of fire protection pipelines.

The solution adopted by the utility model to solve the technical problem is: including an interface flange, a connecting short pipe, a pressure measuring pipe and a drain valve, the interface flange is connected to one end of the connecting short pipe, and the other end of the connecting short pipe is provided with a The other end of the connecting short pipe is externally threaded and threaded with the drain valve. A pressure measuring hole is opened on the side wall of the connecting short pipe. One end of the pressure measuring pipe is connected to the pressure measuring hole, and the other end of the pressure measuring pipe is connected to a The pressure main pipe is provided with a main outlet valve of the pressure measurement pipe, a pressure interface, a pressure measurement valve and a pressure gauge. The pressure measurement interface is provided with a pressure valve. The two ends of the pressure main pipe are provided with a drain valve outlet on the side wall of the drain valve.

As a preferred technical solution of the present utility model, the outlet of the drain valve is connected with a fire-fighting quick connector.

As a preferred technical solution of the present invention, the pressure measuring main pipe is also provided with a connecting pipe, and a water test valve for detecting whether the water in the fire-fighting water pipeline is empty is arranged on the connecting pipe.

As a preferred technical solution of the present invention, single-headed studs are welded at the positions of the mounting holes of the interface flanges.

As a preferred technical solution of the utility model, flange gaskets are installed on the single-headed studs of the interface flange.

Compared with the prior art, the beneficial effects produced by the utility model are:

1. The utility model is suitable for the situation that the fire water pipeline is not provided with a special drainage channel and a pressure interface.

2. The outlet of the drain valve of the present invention can be connected to the fire water sheet through the fire quick connector for drainage. The installation is convenient and fast. The length of the fire hose can be laid according to the needs of the site, and the environment adaptability is strong.

3. The utility model integrates the functions of drainage, pressing, water inspection and pressure measurement, and can save space.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the outlet connection of the pressure measuring tube of the utility model;

Fig. 3 is the structural representation of embodiment 1

Fig. 4 is the structural representation of embodiment 2 interface flange;

Fig. 5 is a schematic structural view of the flange gasket in Embodiment 2.

In the figure: 1. Interface flange; 2. Connecting short pipe; 3. Pressure measuring tube; 4. Drain valve; 5. Pressure measuring hole; 6. Fire quick connector; 7. Pressure measuring main pipe; 8. Pressure measuring tube Main outlet valve; 9. Pressure interface; 10. Pressure valve; 11. Pressure measuring valve; 12. Pressure gauge; 13. Connecting pipe; 14. Water test valve; 15. Fire water pipeline; 16. Single head stud; 17 , Flange gasket.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

The utility model is aimed at the fire-fighting water supply system in the underground workshop of the pumped-storage power station, which has no special maintenance drainage and a device for pressure test after maintenance, and provides a fire-fighting pipeline maintenance drainage and pressure interface device to solve the problems existing in the prior art insufficient.

As shown in Figure 1 and Figure 2, it includes interface flange 1, connecting short pipe 2, pressure measuring tube 3 and drain valve 4, interface flange 1 is connected to the flange on the lower position of the fire water pipeline system through bolts, There is also a flange gasket between the interface flange 1 and the flange on the fire water pipeline to prevent water leakage. The interface flange 1 is connected to one end of the short pipe 2 by welding, and the other end of the short pipe 2 is connected to the drain pipe. The valve 4 is connected by threads, and a pressure measuring hole 5 is opened on the side wall of the connecting short pipe 2 , and one end of the pressure measuring pipe 3 is welded on the pressure measuring hole 5 of the connecting short pipe 2 .

The other end of the pressure measuring tube 3 is connected with a pressure measuring main pipe 7, the pressure measuring main pipe 7 is provided with a pressure measuring pipe main outlet valve 8, a pressure interface 9, a pressure measuring valve 11 and a pressure gauge 12, and the pressure measuring interface 9 is provided with a pressure gauge. The valve 10, the pressure measuring valve 11 and the pressure gauge 12 are respectively arranged at the two ends of the pressure measuring main pipe 7, the pressure measuring main pipe 7 is also provided with a connecting pipe 13, and the connecting pipe 13 is provided with a water testing valve 14, wherein the water testing valve 14 is used to detect whether the water in the fire-fighting water pipeline is empty. The pressure valve 10 and the pressure interface 9 are used for pressure testing of the overhauled fire-fighting water pipeline through external pressure equipment. The pressure measuring valve 11 and the pressure gauge 12 are used to monitor the fire-fighting water pipeline. Water pressure in the road 15, the side wall of the drain valve 4 is connected with a drain valve outlet, and the drain valve outlet is connected with a fire-fighting quick connector 6, which can be quickly connected to a fire-fighting hose of appropriate length for pipeline drainage as required.

When the fire water system is in normal operation, the drain valve 4, water test valve 14, and pressure valve 10 of the device are all in the closed state, the main outlet valve 7 of the piezometer tube, and the pressure tap valve 11 are in the open state, and the pressure gauge 12 can display the fire protection in real time. The pressure in the water line 15.

When the fire-fighting water system drains, first install a quick-connect fire-fighting hose of appropriate length on the fire-fighting quick joint 6 at the outlet of the drain valve 4, then open the drain valve 4, and the water in the fire-fighting water pipeline 15 will be drained through the drain valve 4 and the fire-fighting hose. to the drainage ditch of the power station. It solves the inconvenient drainage situation when the fire water pipeline 15 of the energy storage power station is overhauled. During the drainage process, the pressure in the pipeline can be monitored through the pressure gauge 12. When the drain valve 4 has no flow sound, the water test valve 14 can be opened Check whether the water in the pipeline is empty. If there is water in the fire water pipeline 15, after opening the water test valve 14, there will be water flowing out from the outlet of the connecting pipe 13. If there is no water, there will be no water in the outlet of the connecting pipe 13. Flow out to judge whether the water in the pipe is empty.

When the fire water system needs to be suppressed after overhaul, close the drain valve 4 and the water test valve 14 of the device. After the pipeline is full of water, connect the external pressure equipment through the pressure interface 9, open the pressure valve 10, and carry out the step-by-step maintenance of the fire water pipeline. Boost the pressure. After each pressurization, check the fire water pipeline 15 immediately to check whether there is any leakage at the welding joints and joints. If there is leakage, deal with it immediately. If there is no leakage, continue to increase the pressure. 1. Shutdown inspection, the pressure required for each stage can be controlled through the pressure gauge 12.

The utility model has the advantages of simple structure and convenient operation, and is suitable for the situation that some fire-fighting water pipelines are not provided with special drainage channels and pressure interfaces.

Compared with the prior art, the outlet of the drain valve of the utility model can be connected to the fire water sheet through the fire quick connector for drainage, the installation is convenient and fast, the length of the fire hose can be laid according to the needs of the site, and the environment adaptability is strong . The utility model integrates the functions of drainage, pressing, water inspection and pressure measurement, and can save space.

Embodiment 2: Embodiment 2 is basically the same as Embodiment 1, the difference is that in Embodiment 1, the interface flange 1 and the flange on the lower fire water pipeline are connected by bolts, and the two flanges are connected by bolts. Fixation, on the one hand, when the bolt connection is tightened with nuts, at least two workers need to cooperate with each other to complete it; on the other hand, the nuts on the bolts are subject to long-term vibration of the fire water pipeline 15, which will cause the nuts to fall off and cause water leakage at the joints phenomenon, and when installing, it is not easy to locate the French joint gasket.

Referring to Figures 4 and 5 , single-headed studs 16 are welded at the positions of the mounting holes of the interface flange 1 , and flange gaskets 17 are installed on the single-ended studs 16 of the interface flange 1 .

When in use, install the flange gasket 17 on the single-head stud 16 of the interface flange 1 in advance, then align the single-head stud 16 on the flange interface 1 with the flange through hole on the pipeline, and then use the lock Tightening nuts fix the two, the interface flange 1 structure, one person can complete the fixing of the two, and the fixing effect is good, preventing the occurrence of water leakage at the joint.

The above is only a preferred embodiment of the utility model, and does not limit the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the utility model. within the scope of protection.

Claims (5)

1. The utility model provides a fire-fighting water pipeline overhauls drainage and suppress test interface arrangement which characterized in that: including interface flange, junction pipe, pressure-measuring pipe and drain valve, the interface flange is connected with the one end of junction pipe, and the other end of junction pipe is provided with the other end and the drain valve threaded connection of external screw thread and junction pipe, the pressure-measuring hole has been seted up on the lateral wall of junction pipe, and the one end and the pressure-measuring jogged joint of pressure-measuring pipe, the other end of pressure-measuring pipe are connected with the pressure-measuring house steward, be provided with pressure-measuring pipe total outlet valve, suppress interface, pressure-measuring valve and manometer on the pressure-measuring house steward, be provided with on the pressure-measuring interface and suppress the valve, pressure-measuring valve and manometer set up respectively at the both ends of pressure-measuring house steward, and wherein, suppress the valve and suppress the interface and suppress the test through external pressure equipment to the fire-fighting water pipeline after overhauing, pressure-measuring valve and manometer are arranged in keeping watch on the fire-fighting water pipeline water pressure, the drain valve export has been seted up on the lateral wall of drain valve.

2. The fire hose pipeline overhaul drainage and pressurization test interface device according to claim 1, characterized in that: and the outlet of the drain valve is connected with a fire-fighting quick connector.

3. The fire hose pipeline overhaul drainage and crush test interface device of claim 2, wherein: the pressure measuring main pipe is also provided with a connecting pipe, and the connecting pipe is provided with a water testing valve used for detecting whether water in the fire-fighting water pipeline is emptied.

4. The fire hose pipeline overhaul drainage and crush test interface device of claim 2, wherein: and single-end studs are welded at the positions of the interface flange mounting holes.

5. The fire hose pipeline overhaul drainage and crush test interface device of claim 4, wherein: and a flange gasket is arranged on the single-end stud of the interface flange.

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