Variable-speed steam turbine with double-back-pressure operation and upper steam exhaust

Abstract

The utility model belongs to the technical field of steam turbines, and particularly relates to a double-back-pressure running upper steam exhaust variable-speed steam turbine which comprises a bottom plate, a steam turbine body is fixedly installed at one end of the top of the bottom plate through a supporting frame, a heat preservation box is fixedly installed at the other end of the bottom plate through a supporting rod, and a fixing plate, a water tank and a dispersing assembly are arranged in the heat preservation box. The fixing pipe is fixedly installed at the exhaust end of the steam turbine, the box body is arranged on the fixing pipe, the box cover is arranged on the top of the heat preservation box, the exhaust hole is fixedly formed in the box cover, and the connecting pipe is fixedly installed between the box body and the heat preservation box. The air blowing device is arranged in the heat preservation box and can blow the fan blades to rotate, so that high-temperature gas entering the heat preservation box is scattered, the high-temperature gas can be evenly distributed below the water tank and flows upwards through the ventilation holes, the outer side of the water tank can make contact with the high-temperature gas, and cooling water in the water tank is heated.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a variable speed steam turbine with double back pressure operation and upper exhaust. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated airflow and is then sprayed onto the blades, causing the rotor with the blade rows to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power plants.

[0003] The prior art has the following deficiencies: the prior art publication number CN217440122U states that “a variable speed steam turbine with double back pressure operation and upper exhaust” “includes a machine base, a steam turbine is mounted on the machine base, and the exhaust end of the steam turbine is connected to a recovery mechanism”;

[0004] When the above equipment is in use, the high-temperature gas discharged through the exhaust end of the steam turbine enters the inner tube through the connecting pipe. The cylinder is pre-filled with low-temperature water. When the high-temperature gas is in the inner tube, the heat of the high-temperature gas is transferred to the inner tube, and the low-temperature water absorbs and reabsorbs the heat on the inner tube, thereby heating the low-temperature water. The temperature detector also detects the temperature of the water. After heating to a certain temperature, when it is heated to eighty degrees, the valve opens and the high-temperature water is discharged from the liquid outlet pipe, so that the heat can be recycled. However, when heating, the heating is limited to the contact part between the upper tube and the inner side of the cylinder. The high-temperature gas passing through the upper tube has too fast a speed, so that the efficiency of heating the water inside the cylinder is limited. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a variable speed steam turbine with double back pressure operation and upper exhaust to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a variable speed steam turbine with double back pressure operation and upper exhaust, comprising a bottom plate, a top end of the bottom plate is fixedly mounted with a steam turbine via a support frame, the other end of the bottom plate is fixedly mounted with an insulation box via a support rod, a fixed plate, a water tank and a dispersion component are arranged inside the insulation box, a fixed pipe is fixedly mounted at the exhaust end of the steam turbine, and a box body is arranged on the fixed pipe;

[0007] A box cover is provided on the top of the heat preservation box, an exhaust hole is fixedly installed on the box cover, and a connecting pipe is fixedly installed between the box body and the heat preservation box.

[0008] As a preferred technical solution of the utility model, the fixed plate is fixedly installed near the bottom of the insulation box, the water tank is fixedly installed on the top of the fixed plate, a circular hole is opened at the center of the fixed plate, and the fixed plate has multiple groups of ventilation holes evenly distributed around the water tank.

[0009] As a preferred technical solution of the utility model, a mounting plate is fixedly mounted on the outer side of the box body by bolts, two groups of filters are fixedly mounted on the mounting plate, and square holes are opened on the outer side of the box body at positions corresponding to the filters.

[0010] As a preferred technical solution of the utility model, a plurality of groups of baffles are fixedly installed between the inner wall of the water tank and the heat preservation box, and a plurality of groups of through holes are respectively provided on the baffles, and the through holes on each group of the baffles are staggered.

[0011] As a preferred technical solution of the utility model, a water inlet pipe is fixedly installed on the top of the water tank and extends to the top of the box cover. A water outlet pipe is fixedly installed on the bottom of the water tank. The other end of the water outlet pipe extends to the outside of the insulation box and is fixedly installed with a valve body.

[0012] As a preferred technical solution of the utility model, the dispersed component includes a fixed rod, a swivel and fan blades. The fixed rod is fixedly installed at the bottom of the insulation box, the swivel is rotatably installed on the fixed rod, the fan blades are provided in multiple groups and are evenly distributed and fixed on the swivel, and the ends of the fan blades are provided with arc grooves.

[0013] Compared with the prior art, the utility model provides a variable speed steam turbine with double back pressure operation and upper exhaust, which has the following beneficial effects:

[0014] 1. In a variable speed steam turbine with double back pressure operation and upper exhaust, the gas enters the interior of the insulation box through the connecting pipe, heats the bottom of the water tank, and flows to the top of the fixed plate through the ventilation hole, contacts the outer surface of the water tank, and can delay the gas exhaust speed through the staggered through holes, so that the outside of the water tank can contact the high-temperature gas, thereby heating the cooling water inside the water tank, recycling the heat discharged by the steam turbine, and reducing resource waste.

[0015] 2. This variable speed steam turbine with double back pressure operation and upper exhaust, by setting a dispersion component, can blow the fan blades to rotate when the high temperature gas discharged from the steam turbine enters the interior of the insulation box through the connecting pipe, thereby breaking up the high temperature gas entering the interior of the insulation box, so that the high temperature gas can be evenly distributed under the water tank and flow upward through the ventilation holes, so that the outside of the water tank can contact with the high temperature gas, thereby heating the cooling water inside the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a rear view structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the thermal insulation box of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the dispersed components of the utility model.

[0020] In the figure: 1, bottom plate; 2, steam turbine; 3, fixed pipe; 4, box body; 401, mounting plate; 402, filter; 5, insulation box; 501, box cover; 502, exhaust hole; 503, baffle; 504, through hole; 6, connecting pipe; 7, water tank; 701, water inlet pipe; 702, water outlet pipe; 8, fixed plate; 9, dispersion component; 901, fixing rod; 902, swivel; 903, fan blade. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 In this embodiment: a variable speed steam turbine with double back pressure operation and upper exhaust, comprising a bottom plate 1, a steam turbine 2 is fixedly mounted on one end of the top of the bottom plate 1 through a support frame, an insulation box 5 is fixedly mounted on the other end of the bottom plate 1 through a support rod, a fixing plate 8, a water tank 7 and a dispersion component 9 are arranged inside the insulation box 5, a fixed pipe 3 is fixedly mounted on the exhaust end of the steam turbine 2, and a box body 4 is arranged on the fixed pipe 3;

[0023] A box cover 501 is provided on the top of the heat preservation box 5 , an exhaust hole 502 is fixedly installed on the box cover 501 , and a connecting pipe 6 is fixedly installed between the box body 4 and the heat preservation box 5 .

[0024] In this embodiment, the fixed plate 8 is fixedly installed near the bottom of the insulation box 5, and the water tank 7 is fixedly installed on the top of the fixed plate 8. A circular hole is opened in the center of the fixed plate 8, and multiple groups of ventilation holes are evenly distributed around the fixed plate 8 corresponding to the water tank 7.

[0025] In this embodiment, a mounting plate 401 is fixedly installed on the outer side of the box body 4 by bolts, and two groups of filters 402 are fixedly installed on the mounting plate 401. A square hole is opened on the outer side of the box body 4 at the position corresponding to the filter 402. By setting the filter 402, the gas exhausted by the turbine 2 can be filtered, thereby reducing air pollution. At the same time, by dismantling the box body 4, it is convenient to clean the interior of the box body 4 and the filter 402.

[0026] In this embodiment, a plurality of groups of baffles 503 are fixedly installed between the water tank 7 and the inner wall of the heat preservation box 5, and a plurality of groups of through holes 504 are respectively provided on the baffles 503. The through holes 504 on each group of baffles 503 are staggered. When there is too much high-temperature gas at the bottom of the water tank 7, the gas flows into the top of the fixed plate 8 through the ventilation holes and contacts the outer surface of the water tank 7. At the same time, the staggered through holes 504 can delay the gas discharge speed, so that the outer side of the water tank 7 can contact the high-temperature gas, thereby heating the cooling water inside the water tank 7 and reducing resource waste.

[0027] In this embodiment, a water inlet pipe 701 is fixedly installed on the top of the water tank 7 and extends to the top of the box cover 501. A water outlet pipe 702 is fixedly installed on the bottom of the water tank 7. The other end of the water outlet pipe 702 extends to the outside of the insulation box 5 and a valve body is fixedly installed. The water inlet pipe 701 is used to facilitate the addition of cooling water to the inside of the water tank 7, and the water outlet pipe 702 is used to facilitate the removal of heated water for use.

[0028] In this embodiment, the dispersion component 9 includes a fixed rod 901, a rotating ring 902 and a fan blade 903. The fixed rod 901 is fixedly installed at the bottom of the insulation box 5, the rotating ring 902 is rotatably installed on the fixed rod 901, and the fan blades 903 are provided in multiple groups and are evenly distributed and fixedly installed on the rotating ring 902. The ends of the fan blades 903 are provided with arc grooves. By setting the dispersion component 9, when the high-temperature gas discharged from the turbine 2 enters the insulation box 5 through the connecting pipe 6, the fan blades 903 can be blown to rotate, thereby breaking up the high-temperature gas entering the insulation box 5, so that the high-temperature gas can be evenly distributed below the water tank 7, thereby heating the bottom of the water tank 7.

[0029] The working principle and use process of the utility model are as follows: the steam turbine 2 discharges high-temperature gas through the fixed pipe 3, and the impurities in the gas are filtered when the gas passes through the filter 402, thereby reducing the pollution of the gas to the air when it is discharged, and then when the gas enters the inside of the insulation box 5 through the connecting pipe 6, it can blow the fan blades 903 to rotate, thereby breaking up the high-temperature gas entering the inside of the insulation box 5, so that the high-temperature gas can be evenly distributed under the water tank 7, and the bottom of the water tank 7 is heated. When there is too much high-temperature gas at the bottom of the water tank 7, the gas flows into the top of the fixed plate 8 through the ventilation holes and contacts the outer surface of the water tank 7. At the same time, the staggered through holes 504 can delay the speed of gas discharge, so that the outside of the water tank 7 can contact the high-temperature gas, thereby heating the cooling water inside the water tank 7 and reducing resource waste.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A variable speed steam turbine with double back pressure operation and upper exhaust, comprising a base plate (1), a steam turbine (2) being fixedly mounted on one end of the top of the base plate (1) via a support frame, characterized in that: The other end of the bottom plate (1) is fixedly mounted with an insulation box (5) via a support rod, the insulation box (5) is provided with a fixing plate (8), a water tank (7) and a dispersion assembly (9) inside, the exhaust end of the steam turbine (2) is fixedly mounted with a fixing pipe (3), and the fixing pipe (3) is provided with a box body (4); The top of the heat preservation box (5) is provided with a box cover (501), an exhaust hole (502) is fixedly installed on the box cover (501), and a connecting pipe (6) is fixedly installed between the box body (4) and the heat preservation box (5).

2. A variable speed steam turbine with double back pressure operation and upper exhaust according to claim 1, characterized in that: The fixing plate (8) is fixedly mounted at a position close to the bottom of the heat preservation box (5), and the water tank (7) is fixedly mounted on the top of the fixing plate (8). A circular hole is provided at the center of the fixing plate (8), and a plurality of ventilation holes are evenly distributed around the fixing plate (8) corresponding to the water tank (7).

3. The variable speed steam turbine with double back pressure operation and upper exhaust according to claim 1, characterized in that: A mounting plate (401) is fixedly mounted on the outer side of the box body (4) by means of bolts, two groups of filters (402) are fixedly mounted on the mounting plate (401), and a square hole is provided on the outer side of the box body (4) at a position corresponding to the filter (402).

4. The variable speed steam turbine with double back pressure operation and upper exhaust according to claim 1, characterized in that: A plurality of groups of baffles (503) are fixedly installed between the water tank (7) and the inner wall of the heat preservation box (5), and a plurality of groups of through holes (504) are respectively provided on the baffles (503), and the through holes (504) on each group of baffles (503) are arranged in a staggered manner.

5. The variable speed steam turbine with double back pressure operation and upper exhaust according to claim 1, characterized in that: A water inlet pipe (701) is fixedly installed on the top of the water tank (7) and extends to the top of the tank cover (501). A water outlet pipe (702) is fixedly installed on the bottom of the water tank (7). The other end of the water outlet pipe (702) extends to the outside of the insulation box (5) and is fixedly installed with a valve body.

6. The variable speed steam turbine with double back pressure operation and upper exhaust according to claim 1, characterized in that: The dispersion component (9) comprises a fixed rod (901), a rotating ring (902) and a fan blade (903); the fixed rod (901) is fixedly mounted on the bottom of the heat preservation box (5); the rotating ring (902) is rotatably mounted on the fixed rod (901); the fan blade (903) is provided in a plurality of groups and is evenly distributed and fixedly mounted on the rotating ring (902); and the ends of the fan blades (903) are provided with arc grooves.

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