CN210145371U - Valve well structure for foam spray system - Google Patents

Abstract

The utility model relates to a valve well structure for foam spraying system, a serial communication port, including the valve well, the valve well is located the outdoor apart from foam spraying cell certain distance, the foam spraying buried pipeline is worn to be equipped with by the level in the valve well, the both ends of foam spraying buried pipeline extend to foam spraying cell and oil immersed transformer place position respectively, the pipeline section that the foam spraying buried pipeline passed the valve well is connected with one and fills water valve and one valve that drains, the foam spraying buried pipeline passes the pipeline section of valve well is the pipeline minimum, valve well bottom is connected with the drain pipe. The structure is convenient to operate, manage and maintain, and can prevent the core control equipment of the foam spraying system from being damaged by moisture.

Description

Valve well structure for foam spray system

Technical Field

The utility model relates to an oil immersed transformer foam spraying fire extinguishing systems field, concretely relates to valve well structure for foam spraying system.

Background

The oil immersed transformer adopts a synthetic foam spray fire extinguishing system, the system comprises a foam tank, a synthetic foaming agent, a starting bottle, an electromagnetic valve, a pipe network, a spray head and the like, when a fire detector finds a fire, the starting bottle acts to interlock and open the electromagnetic valve, and the synthetic foaming agent in the foam tank is sprayed out to cover the oil immersed transformer body and an oil conservator so as to realize the effects of cooling, suffocation, isolation and the like to extinguish the oil-containing fire of the transformer. According to the provisions of the technical Specification for application of synthetic foam spray fire extinguishing systems (CECS 156:2004, 5.1.1), after the pipe network of the system is installed, a hydraulic strength test, a hydraulic tightness test and flushing are carried out on the pipe network.

According to the planning arrangement of a transformer substation, core equipment such as a foam tank, a starting bottle and an electromagnetic valve of a foam spraying system are arranged in an overground foam spraying small chamber, a protected object is an oil immersed transformer and is generally located in a range of about 200m near the foam spraying small chamber, a pipeline between the foam tank and a main transformer foam spray head is arranged in a buried mode, and each oil immersed transformer is provided with an independent electromagnetic valve, a branch-shaped pipeline and a spray head as a fire extinguishing agent output channel. Due to the high cost of the synthetic foaming agent, when a system pipeline is tested, if a foam spraying system is directly started, the synthetic foaming agent is directly used as a test medium, so that the investment is greatly increased, a plurality of oil-immersed transformers with a long-range scale of a transformer substation are generally built in stages, and the problem of newly-built pipelines and spray head tests also exists during later expansion.

At present, water is generally used as a test medium in the test of the synthetic foam spray system, and the water in a pipeline is emptied after the test is finished. The existing method is that a test interface is arranged on a main pipe of a foam spray chamber, and an emptying valve well is arranged on an outdoor pipeline.

The technical defects of the existing test valve and the existing emptying valve are as follows: (1) the water is easy to splash to the foam spraying chamber when the water is filled in the test, and the control equipment is arranged in the foam spraying chamber, so that the short circuit phenomenon is easy to generate when the water meets the control equipment, and the control equipment and the electromagnetic valve are easy to break down when being damped. (2) Because of the reason of outdoor cable pit, if do not set up foam spraying pipeline elevation at uniform height, produce the condition of suddenly rising suddenly low easily, thoroughly when draining, remain ponding and air in the pipeline, the time is of a specified duration, and the pipeline easily becomes rusty and pierces through, will not normally carry fire extinguishing agent to put out a fire when putting out a fire. (3) After the transformer substation runs, workers are not in fire control specialties, foam spraying equipment needs to be regularly maintained and checked, and interfaces for testing and water drainage are distributed scattered, so that the operation of the workers is not facilitated, or the operation is omitted, and hidden dangers are left for a foam spraying system. In conclusion, how to set a reasonable test interface and an effective water discharge measure is a detailed problem to be solved by the synthetic foam spraying system.

Disclosure of Invention

An object of the utility model is to provide a valve well structure for foam spraying system, this structure not only makes things convenient for operation, management, maintenance, can prevent moreover that foam spraying system's core control equipment from damaging by making damp.

In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a valve well structure for foam spraying system, includes the valve well, the valve well is located the outdoor apart from foam spraying cell certain distance, the level is worn to be equipped with foam spraying buried pipeline in the valve well, the both ends of foam spraying buried pipeline extend to foam spraying cell and oil immersed transformer place position respectively, the pipeline section that foam spraying buried pipeline passed the valve well is connected with one and is filled water valve and one valve that drains, foam spraying buried pipeline passes the pipeline section of valve well is the pipeline minimum, valve well bottom is connected with the drain pipe.

Furthermore, a three-way connecting pipe with an upward connector and a three-way connecting pipe vertical pipe with a downward connector are arranged on a pipe section of the foam spray buried pipeline penetrating through the valve well so as to be respectively connected with the water filling valve and the water drain valve.

Furthermore, the caliber of the foam spray buried pipeline, the caliber of the water filling valve and the caliber of the water drain valve are the same.

Furthermore, the water filling valve and the water drain valve are respectively copper core gate valves.

Further, the foam spray buried pipeline has a uniform horizontal elevation so that a pipe section passing through the valve well is the lowest point of the pipeline.

Furthermore, a plurality of foam spray buried pipelines are horizontally arranged in the valve well in a penetrating mode, one end of each foam spray buried pipeline is uniformly extended to the foam spray small chamber, and the other end of each foam spray buried pipeline is extended to the position of each oil-immersed transformer.

Further, a cover plate is arranged at the top of the valve well.

Compared with the prior art, the beneficial effects of the utility model are that: the water filling valve and the water drain valve for the test are arranged in the outdoor valve well in a centralized mode, so that the water filling and water drain operation during the test is greatly facilitated, and the unified management and maintenance are facilitated. Meanwhile, the water filling valve is far away from the core control equipment of the foam spraying system, so that the equipment is prevented from being damaged by moisture. In addition, unify foam spraying underground pipe elevation, realized that the valve that drains can be at the effective interior ponding of pipeline drain pipe of pipeline minimum. Therefore, the utility model discloses very strong practicality and wide application prospect have.

Drawings

Fig. 1 is a front view of the structure of the embodiment of the present invention.

Fig. 2 is a top view of the structure (with the cover plate removed) of the embodiment of the present invention.

In the figure, 1, a valve well, 2, a foam spray buried pipeline, 3, a water filling valve, 4, a water drain valve, 5 and a water drain pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model provides a valve well structure for foam spraying system, as shown in figure 1, 2, including valve well 1, valve well 1 locates the outdoor apart from foam spray cell certain distance, foam spray buried pipeline 2 is worn to be equipped with by level in the valve well 1, foam spray buried pipeline 2's both ends extend to foam spray cell and oil immersed transformer position respectively, foam spray buried pipeline 2 passes the pipe connection of valve well 1 and is connected with one and fills water valve 3 and one valve 4 that drains, foam spray buried pipeline 2 passes the pipe section of valve well 1 and is the pipeline minimum, valve well 1 bottom is connected with drain pipe 5, and near arrange to near rainwater inspection shaft, valve well top is equipped with apron 6.

Specifically, a three-way connecting pipe with an upward connector and a three-way connecting pipe vertical pipe with a downward connector are arranged on a pipe section of the foam spray buried pipeline 2 penetrating through the valve well 1 so as to be respectively connected with a water filling valve 3 and a water drain valve 4. In the embodiment, the caliber of the foam spray buried pipeline 2, the water filling valve 3 and the water drain valve 4 are the same and are all DN 80. The water charging valve 3 and the water discharging valve 4 are copper core gate valves.

In order to enable the pipe section penetrating through the valve well to be the lowest point of the pipeline, the foam spray buried pipeline is uniformly arranged at a horizontal elevation and is arranged below the outdoor cable trench, so that the problem of difficult water drainage caused by the fact that the pipeline is suddenly high and suddenly low when penetrating through the cable trench is solved, and the water drainage valve 4 can effectively drain accumulated water in the pipeline at the lowest position of the pipeline.

In order to facilitate centralized management and maintenance, a plurality of foam spray buried pipelines are horizontally arranged in the valve well 1 in a penetrating mode, one end of each foam spray buried pipeline is uniformly extended to the foam spray small chamber, and the other end of each foam spray buried pipeline is respectively extended to the position of each oil-immersed transformer. The specific number is determined by the number of the main transformers and is built at one time.

The utility model provides a be equipped with foam spraying system's core control equipment in the foam spraying cell, should not contact water, consequently the water filling valve of experimental usefulness does not set up in the foam spraying cell, not only can prevent that equipment from weing the damage, when making things convenient for operation test moreover, after experimental fill water and turn on the water, be favorable to organizing planning management and maintenance. During the test, an external water filling pipeline is connected to the water filling valve, the water filling valve is opened to perform the pipeline water filling test, after the test, the water filling valve is closed, the water drain valve is opened, accumulated water in the pipeline is drained, the drained accumulated water is drained to a nearby rainwater inspection well through a drain pipe of the valve well, and the water drain valve is closed after the drainage is finished.

Above is the utility model discloses a preferred embodiment, all rely on the utility model discloses the change that technical scheme made, produced functional action does not surpass the utility model discloses during technical scheme's scope, all belong to the utility model discloses a protection scope.

Claims (7)

1. The utility model provides a valve well structure for foam spraying system, a serial communication port, includes the valve well, the valve well is located the outdoor apart from foam spray cell certain distance, foam spray buried pipeline is worn to be equipped with by the level in the valve well, foam spray buried pipeline's both ends extend to foam spray cell and oil immersed transformer place position respectively, foam spray buried pipeline passes the pipe section of valve well and is connected with one and fills water valve and one valve that drains, foam spray buried pipeline passes the pipeline section of valve well is the pipeline minimum, valve well bottom is connected with the drain pipe.

2. The valve well structure for a foam spray system according to claim 1, wherein a pipe section of the buried foam spray pipeline passing through the valve well is provided with a tee pipe of an upward port and a tee pipe standpipe of a downward port to connect the water charging valve and the water discharging valve, respectively.

3. The valve well structure for a foam spray system of claim 2, wherein the diameters of the buried foam spray pipeline, the water charging valve and the water discharging valve are the same.

4. The valve well structure for a foam spray system of claim 2, wherein the fill valve and the drain valve are each a copper core gate valve.

5. The valve well structure for a foam spray system of claim 1, wherein the foam spray buried pipeline has a uniform level of elevation such that a pipe section passing through the valve well is a lowest point of the pipeline.

6. The valve well structure for the foam spray system according to claim 1, wherein a plurality of the foam spray buried pipelines are horizontally arranged in the valve well in a penetrating manner, one end of each foam spray buried pipeline uniformly extends to the foam spray small chamber, and the other end of each foam spray buried pipeline respectively extends to the position of each oil-immersed transformer.

7. The valve well structure for a foam spray system of claim 1, wherein a cover plate is provided on the top of the valve well.

Images