Gas turbine nozzle end cover water pumping device

Abstract

The utility model discloses a gas turbine nozzle end cover water pumping device, and belongs to the field of gas turbine auxiliary equipment. A gas turbine nozzle end cover water pumping device comprises a water inlet flange arranged at the air inlet end of a nozzle end cover and a pressing plate arranged at a nozzle opening at the air outlet end of the nozzle end cover, the water inlet flange is provided with a water inlet and a water inlet pipeline communicated with the water inlet, and the water inlet pipeline is communicated with an airflow channel of the nozzle end cover; and a fixing plate for fastening the pressing plate is arranged on the outer side of the pressing plate. According to the utility model, the water pumping test of the nozzle end cover can be realized, and the pressure resistance of the end cover can be detected to meet the drawing design requirements.

Description

Technical Field

[0001] The utility model relates to the field of gas turbine auxiliary equipment, in particular to a gas turbine nozzle end cover water pumping device. Background Art

[0002] During the operation of the gas turbine, the nozzle is a very important high-temperature combustion component. Its quality determines the combustion efficiency of the fuel, and the nozzle end cover is particularly important. It determines the safety of fuel combustion. The quality of the nozzle end cover plays a decisive role in preventing the leakage of high-temperature and high-pressure gas, which is related to the safety of the entire combustion system. Since the nozzle end cover is a high-temperature and high-pressure component, its pressure bearing and sealing are difficult problems in the manufacturing process, and it is necessary to test the pressure bearing capacity of the nozzle end face through a water pumping test. However, due to the special-shaped structure of the nozzle end cover, how to design a suitable water pumping device is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model aims to provide a water pumping device for a nozzle end cover of a gas turbine. The device has a simple structure, is highly efficient and low cost, and can realize a water pumping test of the nozzle end cover and inspect the pressure resistance of the end cover so that it meets the design requirements of the drawings.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A water pumping device for a nozzle end cover of a fuel engine comprises a water inlet flange arranged at the air inlet end of the nozzle end cover and a clamping plate arranged at the nozzle opening at the air outlet end of the nozzle end cover, wherein the water inlet flange is provided with a water inlet and a water inlet pipe connected to the water inlet, and the water inlet pipe is connected to the air flow channel of the nozzle end cover; a fixing plate is provided on the outer side of the clamping plate to fasten it.

[0006] According to a further technical solution, the water inlet flange is also provided with a first inner stopper matched with the air inlet end of the nozzle end cover, so as to facilitate the matching and fastening of the water inlet flange and the air inlet end of the nozzle end cover.

[0007] According to a further technical solution, the water inlet flange is fastened to the air inlet end of the nozzle end cover by means of bolts and nuts.

[0008] In a further technical solution, a sealing gasket is provided between the nozzle opening and the pressing plate. Preferably, the sealing gasket is a rubber gasket, and the sealing between the nozzle opening and the pressing plate is further ensured by providing the sealing gasket, thereby ensuring the sealing during the water pumping test.

[0009] According to a further technical solution, the clamping plate includes a plate body and a second inner stopper arranged on the left side of the plate body, and the second inner stopper cooperates with the outer stopper of the nozzle opening to facilitate the clamping plate and the nozzle opening to be engaged and sealed.

[0010] A further technical solution is that the fixing plate includes a fixing plate body, a plurality of first mounting holes provided on the fixing plate body and corresponding to the clamping plates, and a second mounting hole provided on the fixing plate body. The fixing plate body is provided with a groove covering all the clamping plates, and the fixing plate body is connected to the nozzle end cover by the cooperation of the connecting bolt and the second mounting hole, and the first mounting hole cooperates with the set screw to clamp the clamping plate. The nozzle opening is first clamped by the clamping plate, and then the clamping plate is further tightened by setting the fixing plate to ensure the sealing of the nozzle opening, so as to facilitate the water pumping test of the nozzle end cover.

[0011] According to a further technical solution, the water inlet is provided with a plug when water is not pumped to prevent foreign matter from entering the nozzle end cover from the water inlet before and after the water pressure test. Beneficial Effects

[0012] Compared with the prior art, the utility model has the following significant advantages:

[0013] The utility model can well detect the pressure bearing capacity of the nozzle end cover, and meets the test requirements of the nozzle end cover water pressure test and water pump detection, and the device has a simple structure, low cost and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the main sectional view of the utility model;

[0015] Figure 2 It is a right side view of the utility model;

[0016] Figure 3 This is the main view of the water inlet flange;

[0017] Figure 4 for Figure 3 AA view in;

[0018] Figure 5 It is the main view of the fixed plate;

[0019] Figure 6 for Figure 5 AA view in;

[0020] Figure 7 It is the front view of the pressing plate;

[0021] Figure 8 It is the left view of the pressing plate;

[0022] Markings in the figure: 1. water inlet flange, 2. pressing plate, 3. water inlet, 4. water inlet pipe, 5. nozzle end cover, 6. air flow channel, 7. fixing plate, 8. nozzle mouth, 9. first inner stop, 10. sealing gasket, 11. connecting bolt, 12. setting screw, 13. plug, 2-1. plate body, 2-2. second inner stop, 7-1. fixing plate body, 7-2. first mounting hole, 7-3. second mounting hole, 7-4. groove. DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the embodiments and application examples. It should be pointed out that the embodiments are preferred implementations of the utility model, rather than limiting the scope of protection claimed for the utility model, and the application and use method of the utility model are not limited to the application examples. Example

[0024] like Figure 1-8 As shown, a water pumping device for a nozzle end cover of a fuel engine comprises a water inlet flange 1 arranged at the air inlet end of the nozzle end cover 5 and a clamping plate 2 arranged at the nozzle port 8 at the air outlet end of the nozzle end cover 5, wherein the water inlet flange 1 is provided with a water inlet 3 and a water inlet pipe 4 connected with the water inlet 3, and the water inlet pipe 4 is connected with the air flow channel 6 of the nozzle end cover 5; a fixing plate 7 for fastening the clamping plate 2 is provided on the outer side of the clamping plate 2.

[0025] The water inlet flange 1 is also provided with a first inner stop 9 which matches with the air inlet end of the nozzle end cover.

[0026] The water inlet flange 1 is fastened to the air inlet end of the nozzle end cover by the cooperation of bolts and nuts.

[0027] A sealing gasket 10 is provided between the nozzle opening 8 and the pressing plate 2. Preferably, the sealing gasket 10 is a rubber gasket.

[0028] The clamping plate 2 includes a plate body 2 - 1 and a second inner stop 2 - 2 disposed on the left side of the plate body 2 - 1 . The second inner stop 2 - 2 cooperates with the outer stop of the nozzle opening 8 .

[0029] The fixing plate 7 includes a fixing plate body 7-1, a plurality of first mounting holes 7-2 arranged on the fixing plate body 7-1 and corresponding to the clamping plates, and a second mounting hole 7-3 arranged on the fixing plate body 7-1; the fixing plate body 7-1 is provided with a groove 7-4 covering all the clamping plates 2, and the fixing plate body 7-1 is connected to the nozzle end cover 5 by the cooperation of the connecting bolt 11 and the second mounting hole 7-3, and the first mounting hole 7-2 cooperates with the fixing screw 12 to clamp the clamping plate 2.

[0030] The water inlet 3 is provided with a plug 13 when water is not pumped, so as to prevent foreign matter from entering the nozzle end cover from the water inlet before and after the water pressure test.

[0031] The working method of the utility model is as follows:

[0032] 1. Install the nozzle end cover of the water pump device upright to assist in supporting and firmly placing it. First tighten all the set screws, and the set screws will tightly hold the clamping plate 7 and the sealing gasket, and the force generated by the threaded connection between the fixed plate and the set screws will hold each clamping plate tightly.

[0033] 2. Unscrew the plug 3, connect the pump water pipe to the water inlet of the water inlet flange, and then start to let water in. The water first flows into the air flow channel in the nozzle end cover through the water inlet pipe, and then into the annular chamber of the water nozzle end cover until the nozzle mouth. Continue to pressurize and observe whether the bolts or screws at various places have any abnormal movement. If there is shaking, continue to tighten the bolts or screws here. Until the pressurized pressure reaches the technical requirements of the drawing, start to maintain the pressure at this time, maintain the pressure for 10 minutes, check for leakage, whether the pressure is stable, etc. If there is no leakage in any part of the nozzle end cover, it is considered that the nozzle end cover can withstand the pressure of the fuel gas, and the nozzle end cover is qualified. Because all the nozzle openings of the nozzle end cover are set on the annular chamber, the water pumping device can seal all the nozzle openings at one time and well, and then detect the pressure bearing capacity of the nozzle end cover, and the cost is extremely low, the structure is simple, and the practicality is strong.

Claims

1. A water pumping device for a nozzle end cover of a combustion engine, characterized in that: It includes a water inlet flange arranged at the air inlet end of the nozzle end cover and a clamping plate arranged at the nozzle opening at the air outlet end of the nozzle end cover. The water inlet flange is provided with a water inlet and a water inlet pipe connected to the water inlet, and the water inlet pipe is connected to the air flow channel of the nozzle end cover; the outer side of the clamping plate is provided with a fixing plate for fastening it.

2. A gas turbine nozzle end cover water pumping device according to claim 1, characterized in that: The water inlet flange is also provided with a first inner stopper matched with the air inlet end of the nozzle end cover.

3. A gas turbine nozzle end cover water pumping device according to claim 1 or 2, characterized in that: The water inlet flange is fastened to the air inlet end of the nozzle end cover by the cooperation of bolts and nuts.

4. A gas turbine nozzle end cover water pumping device according to claim 1, characterized in that: A sealing gasket is arranged between the nozzle opening and the pressing plate.

5. A gas turbine nozzle end cover water pumping device according to claim 4, characterized in that: The sealing pad is a rubber pad.

6. A gas turbine nozzle end cover water pumping device according to claim 1, characterized in that: The clamping plate comprises a plate body and a second inner stopper arranged on the left side of the plate body, and the second inner stopper matches with the outer stopper of the nozzle opening.

7. A gas turbine nozzle end cover water pumping device according to claim 1, characterized in that: The fixing plate includes a fixing plate body, a plurality of first mounting holes arranged on the fixing plate body and corresponding to the clamping plates, and a second mounting hole arranged on the fixing plate body; the fixing plate body is provided with a groove covering all the clamping plates, and the fixing plate body and the nozzle end cover are connected by the cooperation of the connecting bolts and the second mounting holes, and the first mounting holes cooperate with the fixing screws to clamp the clamping plate.

8. The water pumping device for a nozzle end cover of a combustion engine according to claim 1, characterized in that: The water inlet is provided with a plug when water is not pumped.

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