CN205917764U - Gas turbine test platform fire extinguishing system - Google Patents

Abstract

The utility model discloses a fire-fighting system for a test bench of a gas turbine, which comprises a fire-fighting pool, a fire-fighting pump and a water supply pipeline. Sensor and pressure control switch. The pressure stabilizing pump is located on the water supply pipeline to deliver the water in the fire pool to the fire control pipe network of the test bench. The pressure sensor is located on the fire control network to detect the water pressure in the fire control network. The water pressure in the fire pipe network sensed by the sensor controls the start of the fire pump and the stabilizing pump. The fire protection system of the gas turbine test bench of the utility model provides fire water supply with corresponding pressure for the fire pipe network through the fire pump and the pressure stabilizing pump, and performs intelligent interlocking control between the water pressure in the fire pipe network and the fire pump and the pressure stabilizing pump. It solves the problem of frequent start-up of fire pumps in the past, not only saves energy and protects the environment, but also protects important equipment and prolongs the service life of the equipment.

Description

Gas Turbine Test Bench Fire Protection System

technical field

The utility model relates to a fire protection system for a gas turbine test bench.

Background technique

A gas turbine is a rotary power machine that converts thermal energy into mechanical energy using continuously flowing gas as a working medium. In recent years, its related research and development work has received extensive attention from the National Development and Reform Commission and the Ministry of Science and Technology, and has been included in the key development areas of my country's long-term science and technology development plan. On the basis of the design and development of gas turbines, it is necessary to carry out experimental research for numerical verification and design optimization, which requires the construction of gas turbine test benches.

Due to certain dangers in gas turbine scientific research tests, in order to ensure the safety of test personnel and test equipment, in addition to the necessary fire extinguishing equipment on site, it is also necessary to build a fire protection system, which is used to supply water to the fire pipe network of the test bench, and then The fire pipe network provides fire protection for the test bench. The existing fire water supply system is relatively simple, and its reliability and intelligence are not high. Especially when the pressure of the fire pipe network is unstable, it is necessary to frequently start the fire pump to maintain a constant pressure, which not only affects the service life of the fire pump, but also consumes A lot of labor. Therefore, it is necessary to design a complete, energy-saving and intelligent fire water supply system to protect the safety of the gas turbine test bench.

Utility model content

Aiming at the deficiencies of the existing technology, the technical problem to be solved by the utility model is to provide a gas turbine test bench fire protection system, which can not only improve the pressure stability of the fire protection pipe network, but also have the advantages of energy saving and intelligence.

In order to achieve the above object, the utility model is achieved through the following technical solutions: a fire-fighting system for a gas turbine test bench, including a fire-fighting pool, a fire-fighting pump and a water supply pipeline, and the fire-fighting pump transports the water in the fire-fighting pool to the The fire-fighting pipe network on the test bench also includes a pressure-stabilizing pump, a pressure sensor and a pressure control switch. The sensor is located on the fire-fighting pipe network to detect the water pressure in the fire-fighting pipe network, and the pressure control switch controls the starting of the fire-fighting pump and the stabilizing pump according to the water pressure in the fire-fighting pipe network sensed by the pressure sensor.

Further, the water supply pipeline has a collection pipeline that brings together the outlets of the fire pump and the pressure stabilizing pump. The collection pipeline communicates with the fire pool through a pressure relief branch. pressure valve.

Furthermore, an electromagnetic flowmeter for measuring the internal water flow is provided on the pressure relief branch.

Further, the fire pump is composed of a parallel main fire pump and a standby fire pump, and the corresponding main fire pump and the outlet of the standby fire pump on the water supply pipeline are connected through a venting pipeline, and the outlet of the venting pipeline is The middle part communicates with the fire pool, and a gate valve is arranged on the venting pipeline.

Further, a diaphragm pressure tank is connected to the water outlet end of the water supply pipeline corresponding to the pressure stabilizing pump.

Further, the pressure stabilizing pump is composed of a main stabilizing pump and a backup stabilizing pump connected in parallel.

Further, two gate valves connected in series are provided on the water supply pipeline corresponding to the water inlet of the fire pump and the pressure stabilizing pump, and one-way valves are provided on the water supply pipeline corresponding to the water outlet of the fire pump and the pressure stabilizing pump. .

Further, waterproof wing rings are provided at the connections between the water supply pipeline, the vent pipeline and the pressure relief branch and the fire pool.

Further, it also includes a liquid level sensor located in the fire pool and a solenoid valve located on the water inlet pipeline of the fire pool. When the liquid level sensor detects that the water level in the fire pool is low, the solenoid valve opens to replenish water in the fire pool.

The beneficial effects of the utility model:

1. The fire protection system of the gas turbine test bench of the present utility model provides the fire protection water supply of corresponding pressure for the fire protection pipe network through the fire pump and the pressure stabilizing pump, and intelligently interlocks the water pressure in the fire protection pipe network with the fire pump and the pressure stabilization pump control, which solves the problem of frequent start-up of fire pumps in the past, which not only saves energy and protects the environment, but also protects important equipment and prolongs the service life of the equipment;

2. The fire protection system of the gas turbine test bench of the present utility model can release the pressure through the ultra-high pressure relief valve when the pressure in the water supply pipeline is extremely high, which improves the safety of the system operation;

3. For the fire protection system of the gas turbine test bench of the present utility model, when the pressure in the fire protection pipe network is ultra-low, the diaphragm pressure tank can provide emergency water supply for the fire protection pipe network;

4. The fire protection system of the gas turbine test bench of the present utility model interlocks the liquid level sensor of the fire protection pool with the water inlet solenoid valve, automatically starts water replenishment when the water level is low, and automatically stops water replenishment when the water level is high;

5. The fire protection system of the gas turbine test bench of the present invention can realize unattended, automatic control, energy saving and environmental protection.

Description of drawings

Fig. 1 is the system schematic diagram of a kind of gas turbine test bench fire protection system of the present utility model;

Reference signs: 1-fire pool, 2-fire pump, 3-water supply pipeline, 4-fire pipe network, 5-stabilizing pump, 6-pressure sensor, 7-pressure control switch, 8-pressure relief branch, 9 -overpressure relief valve, 10-electromagnetic flowmeter, 11-venting pipeline, 12-gate valve, 13-diaphragm pressure tank, 14-one-way valve, 15-waterproof wing ring, 16-liquid level sensor, 17 -Solenoid valve, 18-power control cabinet, 21-main fire pump, 22-standby fire pump, 31-collection pipeline, 32-first branch line, 33-second branch line, 34-third branch line, 35-fourth branch line , 51-main voltage stabilizing pump, 52-standby voltage stabilizing pump.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Please refer to the figure, the utility model provides a technical solution: a gas turbine test bench fire system, including a fire pool 1, a fire pump 2 and a water supply pipeline 3. The fire-fighting pool 1 is used to store fire-fighting water, and the fire-fighting pump 2 transports the water in the fire-fighting pool 1 to the fire-fighting pipe network 4 of the test bench through the water supply pipeline 3 . The fire pump 2 is divided into a main fire pump 21 and a backup fire pump 22. The main fire pump 21 is located on the first branch line 32, and the backup fire pump 22 is located on the second branch line 33. The first branch line 32 and the second branch line 33 are water supply pipelines 3 Two branch lines connected in parallel with each other, one end of the first branch line 32 and the second branch line 33 are respectively connected to the fire pool 1, and the other ends of the first branch line 32 and the second branch line 33 are connected to the collection pipeline 31, and the collection pipeline 31 is connected to the fire fighting pool. The pipe network 4 is connected. Under normal circumstances, the main fire pump 21 is in the working state, and the main fire pump 21 transports the water in the fire pool 1 to the fire pipe network 4 of the gas turbine test bench through the first branch line 32 and the collection line 31 . When the main fire pump 21 cannot be started due to maintenance or failure, the standby fire pump 22 is put into operation, and the standby fire pump 22 transports the water in the fire pool 1 to the fire pipe network of the gas turbine test bench through the second branch line 33 and the collection line 31 4 within.

When the water pressure in the fire pipe network 4 is unstable, in order to avoid maintaining a constant pressure by manually starting the fire pump frequently, the water supply system of the present invention also includes a pressure stabilizing pump 5 , a pressure sensor 6 and a pressure control switch 7 . The regulator pump 5 is similar to the fire pump 2. The regulator pump 5 is also located on the water supply pipeline 3 to deliver the water in the fire pool 1 to the fire pipeline network 4 of the test bench. The pressure sensor 6 is located on the fire pipeline network 4 or the collection pipeline 3 to detect the water pressure in the fire pipe network 4. The pressure control switch 7 is located in the power control cabinet 18. The pressure control switch 7 can control the fire pump 2 and the fire pump 2 according to the water pressure in the fire pipe network 4 sensed by the pressure sensor 6. The start of the regulator pump 5. The specific control principle is as follows: when the water pressure in the fire pipe network 4 is less than 0.40MPa, the pressure control switch 7 controls the pressure stabilizing pump 5 to start; when the water pressure in the fire pipe network 4 is greater than 0.45MPa, the pressure control switch 7 controls the steady The pressure pump 5 stops running; when the operating pressure is less than 0.32MPa, the fire pump is automatically started.

The stabilizing pump 5 is divided into a main stabilizing pump 51 and a standby stabilizing pump 52 . The main stabilizing pump 51 is located on the third branch line 34, and the standby stabilizing pump 52 is located on the fourth branch line 35. The third branch line 34 and the fourth branch line 35 are two branches connected in parallel on the water supply pipeline 3. The third branch line 34 and the fourth branch line One end of the fourth branch line 35 is respectively connected to the fire pool 1 , and the other ends of the third branch line 34 and the fourth branch line 35 are connected to the collection pipeline 31 , and the collection pipeline 31 is connected to the fire protection pipe network 4 . Under normal circumstances, the main stabilizing pump 51 is in the working state, and the main stabilizing pump 51 transports the water in the fire-fighting pool 1 to the fire-fighting pipe network 4 of the gas turbine test bench through the third branch line 34 and the collection line 31 . When the main stabilizing pump 51 cannot be started due to maintenance or failure, the standby stabilizing pump 52 is put into operation, and the standby stabilizing pump 52 transports the water in the fire pool 1 to the gas turbine test bench through the fourth branch line 35 and the collection pipeline 31. Inside the fire pipe network 4.

As mentioned above, the first, second, third, and fourth branch lines 32, 33, 34, and 35 are all in communication with the collection pipeline 31. 1 is connected, and the pressure relief branch 8 is provided with an overpressure relief valve 9. When the fire pipe network pressure is greater than 0.55MPa, the overpressure relief valve 9 is automatically opened to reduce the pipe network pressure. In addition, the pressure relief branch 8 is also provided with an electromagnetic flowmeter 10 for measuring the water flow inside it.

In order to further improve the safety of the pipeline, the outlets of the main fire pump 21 and the backup fire pump 22 on the first branch line 32 and the second branch line 33 are connected through the vent pipeline 11, and the middle part of the vent pipeline 11 is connected to the fire pool. 1 are connected through a standpipe, and a gate valve 12 is provided on the standpipe of the venting pipeline. When the outlet pressure of the fire pump 2 is relatively high, the pressure can be properly relieved by opening the gate valve 12 on the venting pipeline 11, thereby ensuring pipeline safety.

In order to avoid frequent start-up of the pressure stabilizing pump 5 , a diaphragm pressure tank 13 is connected to the outlet end of the water supply pipeline 3 corresponding to the stabilizing pump 5 . Diaphragm-type air tank 13 is an energy storage device. During normal operation, the diaphragm-type air-pressure tank can store a certain amount of water. When the pressure of the fire-fighting pipe network is insufficient due to an emergency, the diaphragm-type air-pressure tank 13 can supply water to the outside without starting the voltage regulator. pump 5, thereby avoiding the frequent start of the pressure stabilizing pump 5 and improving the life of the stabilizing pump 5.

The first, second, third, and fourth branch lines 32, 33, 34, and 35 correspond to the main fire pump 21, the standby fire pump 22, the main stabilized pressure pump 51, and the standby stabilized pressure pump 52. One of the gate valves 12 can be turned off when one of the two gate valves needs to be overhauled, so as to facilitate overhaul and maintenance. On the first, second, third, and fourth branch lines 32, 33, 34, and 35, the water outlets corresponding to the main fire pump 21, the backup fire pump 22, the main stabilized pressure pump 51 and the standby stabilized pressure pump 52 are provided with check valves 14, One-way valve 14 prevents water from flowing back.

The joints of the first, second, third, and fourth branch lines 32, 33, 34, 35, venting pipeline 11, pressure relief branch 8 and fire pool 1 are all equipped with waterproof wing rings 15, which are used to realize The flexible connection between the water supply pipeline 3, the emptying pipeline 11, the pressure relief branch 8 and the building structure of the fire fighting pool 1 prevents the fire fighting pool 1 from being damaged by the impact of the pipeline.

A liquid level sensor 16 is provided in the fire-fighting pool 1, and a solenoid valve 17 is provided on the water inlet pipe of the fire-fighting pool 1. When the liquid level sensor detects that the water level in the fire-fighting pool 1 is low, the power control cabinet 18 sends a signal to the solenoid valve 17 and makes the It is opened to replenish water into the fire pool 1 .

The basic principles and main features of the utility model and the advantages of the utility model have been shown and described above. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the utility model The present utility model can be realized in other specific forms without the spirit or essential features. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. a kind of test bench for gas turbine fire-fighting system, including fire cistern, fire pump and water supply line, described fire pump passes through Water supply line by the water in fire cistern be conveyed to testing stand fire_fighting pipe network it is characterised in that: also include stabilized pressure pump, pressure pass Sensor and pressure control switch, described stabilized pressure pump is located on water supply line, and the water in fire cistern is conveyed to disappearing of testing stand Anti- pipe network, described pressure transducer is located on fire_fighting pipe network, to detect the hydraulic pressure in fire_fighting pipe network, described pressure control switch root To control the startup of fire pump and stabilized pressure pump according to the hydraulic pressure in the fire_fighting pipe network that pressure transducer senses.

2. test bench for gas turbine fire-fighting system according to claim 1 it is characterised in that: have on described water supply line Collect pipeline by what the outlet of fire pump and stabilized pressure pump pooled together, the described pipeline that collects passes through pressure release branch road and fire cistern Connection, described pressure release branch road is provided with superpressure relief valve.

3. test bench for gas turbine fire-fighting system according to claim 2 it is characterised in that: described pressure release branch road is provided with With the electromagnetic flowmeter measuring its internal water flow.

4. test bench for gas turbine fire-fighting system according to claim 1 it is characterised in that: described fire pump is by parallel Main fire pump and standby fire pump composition, described water supply line passes through between corresponding main fire pump and the standby fire pump port of export Blowdown piping connects, and the middle part of described blowdown piping is connected with fire cistern, and described blowdown piping is provided with gate valve.

5. test bench for gas turbine fire-fighting system according to claim 4 it is characterised in that: corresponding on described water supply line The water side of stabilized pressure pump is connected with diaphragm type pressurized tank.

6. test bench for gas turbine fire-fighting system according to claim 5 it is characterised in that: described stabilized pressure pump is by parallel Main stabilized pressure pump becomes with spare voltage stabilization pump group.

7. the test bench for gas turbine fire-fighting system according to any one of claim 1-6 it is characterised in that: described feed pipe On line, the water inlet end of corresponding fire pump and stabilized pressure pump is equipped with the gate valves of two concatenations, on described water supply line corresponding fire pump and The water side of stabilized pressure pump is equipped with check valve.

8. test bench for gas turbine fire-fighting system according to claim 7 it is characterised in that: described water supply line, emptying Pipeline and pressure release branch road are equipped with anti-hydrofoil ring with the junction of fire cistern.

9. test bench for gas turbine fire-fighting system according to claim 8 it is characterised in that: also include positioned at fire cistern Interior liquid level sensor and the electromagnetic valve on the inlet pipeline of fire cistern, when liquid level sensor records in fire cistern When water level is low, electromagnetic valve is opened to moisturizing in fire cistern.