TRT turbine with internal rapid inspection device

Abstract

The utility model provides a TRT turbine with an internal rapid inspection device, which aims to realize rapid inspection of the internal structure of the TRT turbine and reduce downtime, and comprises a casing, an air inlet side upper casing and an exhaust side upper casing. A first endoscopic opening and a second endoscopic opening are formed in the sides, located in the radial direction of the turbine rotor, of the air inlet side upper shell and the air outlet side upper shell correspondingly, an acute angle is formed between the first endoscopic opening and the lower end face of the air inlet side upper shell, and an acute angle is formed between the second endoscopic opening and the lower end face of the air outlet side upper shell. According to the device, the blades in the TRT turbine can be quickly checked, and the generating capacity is increased by compressing the shutdown time.

Description

Technical Field

[0001] The utility model relates to the technical field of TRT turbines, and particularly relates to a TRT turbine with an internal quick inspection device. Background Technique

[0002] When the turbine is shut down for inspecting the internal structure and blades, it is necessary to remove the large covers of the intake and exhaust casings, hoist and separate them for inspection. The inspection cost is high and the shutdown time is long. The single shutdown time reaches 24 hours. Generally, for daily inspection, the balance pipe of the casing is removed and an endoscope is used to inspect the blades and the internal structure, which takes 8 hours. To solve the problem of long shutdown time for periodic inspection, it is necessary to transform the casing.

[0003] The patent with the publication number CN202968584U discloses a TRT blade quick inspection device. By installing flanges at the intake end and the exhaust end of the TRT casing, it is convenient for the endoscope to be inserted to realize the inspection of the internal blades. It borrows the intake and exhaust ports on the TRT casing to install flanges, and still needs to borrow an endoscope in operation, and the operation is relatively cumbersome. Content of the Utility Model

[0004] The utility model provides a TRT turbine with an internal quick inspection device to realize the quick inspection of the internal structure of the TRT turbine and reduce the shutdown time. To achieve the above purpose, the following technical solutions are adopted:

[0005] A TRT turbine with an internal quick inspection device includes a casing, an intake-side upper casing, and an exhaust-side upper casing. It is characterized in that the intake-side upper casing and the exhaust-side upper casing are respectively provided with a first endoscope port and a second endoscope port on the radial side of the turbine rotor. The first endoscope port is arranged at an acute angle with the lower end face of the intake-side upper casing, and the second endoscope port is arranged at an acute angle with the lower end face of the exhaust-side upper casing.

[0006] Furthermore, both the first endoscope port and the second endoscope port are composed of a seamless pipe, a flange, and a flange cover. One end of the seamless pipe is fixedly connected to the intake casing or the exhaust casing, and the other end is fixedly connected to the flange. The flange cover is detachably and fixedly connected to the flange through bolts, and a sealing ring is arranged between the flange cover and the flange.

[0007] Furthermore, two groups of the first endoscope port and the second endoscope port are symmetrically arranged along the center line of the intake-side upper casing and the center line of the exhaust-side upper casing respectively.

[0008] Furthermore, the first endoscope port is located below the first lifting nose on the intake-side upper casing.

[0009] Furthermore, the included angle between the first endoscope port and the lower end face of the intake casing is 15°.

[0010] Furthermore, the height of the second endoscope port is the same as the height of the second lifting nose on the exhaust side housing.

[0011] Furthermore, the included angle between the second endoscope port and the lower end face of the exhaust housing is 28°.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. By opening new endoscope ports at appropriate positions on the intake side upper housing and the exhaust side upper housing of the TRT turbine, the internal blades of the TRT turbine can be visually and quickly inspected. Moreover, the endoscope ports are arranged at an acute included angle, eliminating the need to borrow an endoscope.

[0014] 2. The endoscope port consists of a seamless pipe, a flange, and a flange cover. Under normal working conditions, a good sealing effect can be achieved through the flange cover and the flange. When inspection is required, only the flange cover needs to be removed, and the internal blade condition can be inspected through the two side endoscope holes, effectively reducing the inspection time, compressing the shutdown time, and thus increasing the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the present utility model

[0016] Figure 2 is Figure 1 a half-sectional view of A-A of the intake side upper housing in

[0017] Figure 3 a partial sectional view of the exhaust side upper housing

[0018] Wherein: 1 - intake side upper housing, 101 - first lifting nose;

[0019] 2 - exhaust side upper housing, 201 - second lifting nose;

[0020] 3 - first endoscope port, 301 - first seamless pipe, 302 - first flange, 303 - first flange cover, 304 - first sealing ring, 305 - first fixing bolt, 306 - first gasket;

[0021] 4 - second endoscope port, 401 - second seamless pipe, 402 - second flange, 403 - flange cover, 404 - second sealing ring, 405 - second fixing bolt, 406 - second gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0023] In the description of the utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the view direction or positional relationships, and are only for the convenience of describing the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model.

[0024] It should be noted that in this embodiment, the axial direction of the TRT turbine rotor is taken as the front-rear direction, and the horizontal radial direction of the rotor of the TRT turbine is taken as the left-right direction.

[0025] As Figures 1 - 3 shown, a TRT turbine with an internal quick inspection device includes a housing, an intake-side upper housing 1, and an exhaust-side upper housing 2, all of which are existing structures. The housing is not shown in the drawings. The intake-side upper housing 1 and the exhaust-side upper housing 2 are both fixedly connected above the housing, and a first endoscope port 3 and a second endoscope port 4 are respectively provided on the intake-side upper housing 1 and the exhaust-side upper housing 2.

[0026] Specifically, as Figure 1 and Figure 2 shown, there are two groups of the first endoscope ports 3. The two groups of the first endoscope ports 3 are symmetrically arranged on the left and right sides of the intake-side upper housing 1 along the center line of the intake-side upper housing 1. The first endoscope port 3 is composed of a first seamless tube 301, a first flange 302, a first flange cover 303, a first sealing ring 304, a first fixing bolt 305, and a first gasket 306. The first seamless tube 301 is fixedly connected to the lower position of the first lifting nose 101 of the intake-side upper housing 1 for communicating the inside of the intake-side upper housing 1 with the external environment, and the axis of the first seamless tube 301 forms a 15° angle with the lower end face of the intake-side upper housing 1. The first flange 302 is coaxially fixedly connected to the outer end of the first seamless tube 301. The first flange cover 303 is detachably fixedly connected to the first flange 302 through multiple groups of the first fixing bolts 305 and the first gasket 306, and the first sealing ring 304 is arranged between the first flange cover 303 and the first flange 302 to ensure the sealing performance in the installed state.

[0027] The exhaust-side upper housing 2 is as Figure 1 andFigure 3 As shown, there are also two sets of second endoscopic ports 4. The two sets of second endoscopic ports 4 are symmetrically arranged on the left and right sides of the exhaust-side upper housing 2 along the center line of the exhaust-side upper housing 2. The second endoscopic port 4 is composed of a second seamless tube 401, a second flange 402, a second flange cover 403, a second sealing ring 404, second fixing bolts 406 and second gaskets 406. The connection relationship between the components can refer to the first endoscopic port 3, which will not be elaborated too much in this embodiment. Moreover, the second endoscopic port 4 is at the same height as the second lifting nose 201 on the exhaust-side upper housing 2 in the height direction, and the angle between the axis of the second seamless tube 401 and the lower end face of the exhaust-side upper housing 2 is set at 28°.

[0028] The main difference in the angle settings between the first endoscopic port 3 and the second endoscopic port 4 and their respective housings lies in the outer surface curvature and height of the intake-side upper housing 1 and the exhaust-side upper housing 2 respectively, as well as the internal blade distribution. The first endoscopic port 3 is set at an angle of 15°, and the second endoscopic port 4 is set at an angle of 28°, which can better observe the blade conditions inside their respective housings.

[0029] When using this device to inspect the internal structure of the TRT turbine, only the fixing bolts and the flange cover need to be removed, and then the blade conditions inside the housing can be inspected through the seamless tube. There is no need to remove the housing balance pipe and then use an endoscope for inspection, effectively reducing the inspection time and avoiding the problem of too long shutdown time of the TRT turbine.

[0030] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements can be made, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. A TRT turbine with an internal quick inspection device, comprising a casing, an intake-side upper casing, and an exhaust-side upper casing, characterized in that, The intake-side upper housing and the exhaust-side upper housing are respectively provided with a first endoscope port and a second endoscope port on a radial side of the turbine rotor. An acute angle is formed between the first endoscope port and the lower end surface of the intake-side upper housing, and an acute angle is formed between the second endoscope port and the lower end surface of the exhaust-side upper housing.

2. The TRT turbine with an internal quick inspection device according to claim 1, characterized in that, Both the first endoscope port and the second endoscope port are composed of a seamless tube, a flange, and a flange cover. One end of the seamless tube is fixedly connected to the intake housing or the exhaust housing, and the other end is fixedly connected to the flange. The flange cover is detachably and fixedly connected to the flange by bolts, and a sealing ring is arranged between the flange cover and the flange.

3. The TRT turbine with an internal quick inspection device according to claim 1, characterized in that, Two sets of the first endoscope port and the second endoscope port are symmetrically arranged along the center line of the intake-side upper housing and the center line of the exhaust-side upper housing respectively.

4. The TRT turbine with an internal quick inspection device according to claim 1, characterized in that, The first endoscope port is located below the first lifting nose on the intake-side upper housing.

5. The TRT turbine with an internal quick inspection device according to claim 4, characterized in that, The included angle between the first endoscope port and the lower end surface of the intake housing is 15°.

6. The TRT turbine with an internal quick inspection device according to claim 1 or 4, characterized in that, The height of the second endoscope port is the same as the height of the second lifting nose on the exhaust-side housing.

7. The TRT turbine with an internal quick inspection device according to claim 6, characterized in that, The included angle between the second endoscope port and the lower end surface of the exhaust housing is 28°.

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