CN219120640U

CN219120640U - Heating device for high-low pressure bypass of steam turbine

Info

Publication number: CN219120640U
Application number: CN202221918684.XU
Authority: CN
Inventors: 张刚; 贾启; 张正领; 冯忠海; 刘继彦; 刘伟
Original assignee: Liaocheng Xinyuan Group Co ltd
Current assignee: Liaocheng Xinyuan Group Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-06-02
Anticipated expiration: 2032-07-22

Abstract

The utility model discloses a heating device of a high-low pressure bypass of a steam turbine, which comprises: the device comprises a supporting frame, an electric heating barrel, a barrel cover and a control cabinet; an electric heating barrel is connected above the supporting frame and serves as a heat supply foundation; the bearing seat is connected to the inner peripheral surface of the electric heating barrel, and a threaded rod is connected in the bearing seat. Through driving the threaded rod rotation, make annular scraper blade remove along the electrical heating bucket inner wall, and then scrape down the incrustation scale of adhesion on the electrical heating bucket inner wall, thereby be convenient for clear up the electrical heating bucket, pass through the groove after reset through T type pole tip, support the water intaking valve tip at the butt joint pipe tip, and then be convenient for install the water intaking valve, need not use the ring flange butt joint, and pass multiunit bolt locking, after getting into the rose box through hot water, before being taken out by the water pump, through filter screen and activated carbon sheet, with inside particulate matter filtering, and then prevent that the incrustation scale from being drawn into in the water pump, and in the heating power pipe network.

Description

Heating device for high-low pressure bypass of steam turbine

Technical Field

The utility model relates to the technical field of high-low pressure bypass heat supply, in particular to a heat supply device of a turbine high-low pressure bypass.

Background

The high-low pressure bypass is an integral part of the thermodynamic system of the modern unit. The boiler has the functions that when the operation conditions of the boiler and the steam turbine are not matched, namely, when the steam quantity generated by the boiler is equal, redundant parts can be directly introduced into the condenser after bypass temperature and pressure reduction without entering the steam turbine, and the heat supply of the high-pressure bypass and the low-pressure bypass generally comprises hot water heat storage heat supply, electric heating heat supply and low-pressure cylinder zero-output heat supply, and the conventional electric heating heat supply device has certain defects when in use, such as;

because the electric heating barrel is internally provided with the heating rod or the heating wire for directly heating tap water, a large amount of scale can be adhered to the inner wall of the barrel body after long-time use, and if the electric heating barrel is not cleaned in time, the heating efficiency can be seriously reduced, so that the problem of lower power utilization rate is caused;

there is a need for improvement in view of the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a heating device of a high-low pressure bypass of a steam turbine, which aims to solve the problems that the heating efficiency is seriously reduced and the electric utilization rate is lower when the heating device is not cleaned in time after a large amount of scale is adhered to the inner wall of a barrel body after long-time use because tap water is directly heated by a heating rod or a heating wire in an electric heating barrel in the current market proposed by the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a heating apparatus for a high and low pressure bypass of a steam turbine, comprising: the device comprises a supporting frame, an electric heating barrel, a barrel cover and a control cabinet;

an electric heating barrel is connected above the supporting frame and serves as a heat supply foundation, one end of the electric heating barrel is connected with a barrel cover, the front part of the electric heating barrel is connected with a control cabinet, a heating rod is embedded in the electric heating barrel, a butt joint pipe is embedded above the electric heating barrel, the end part of the butt joint pipe is connected with a water inlet valve, and a water pump is arranged below the electric heating barrel;

the bearing seat is connected to the inner peripheral surface of the electric heating barrel, a threaded rod is connected to the bearing seat, an internal thread seat is connected to the threaded rod in a threaded mode, the internal thread seat is connected to the inner peripheral surface of the annular scraping plate, and the annular scraping plate is connected to the electric heating barrel in a clamping mode.

Preferably, one end of the threaded rod is connected with an output shaft, the output shaft is connected in the sealing ring in a penetrating manner, one end of the threaded rod is embedded on the inner wall of the electric heating barrel, one end of the output shaft is connected with a servo motor, and the servo motor is connected to one side of the electric heating barrel.

Preferably, the diameter of the outer peripheral surface of the annular scraping plate is equal to that of the inner peripheral surface of the electric heating barrel, and the central axis of the annular scraping plate and the central axis of the threaded rod are not on the same horizontal line.

Preferably, an abutting plate is connected below the water inlet valve, one side of the abutting plate is connected in the abutting rail in a clamping way, and the abutting rail is connected to the inner peripheral surface of the abutting pipe;

the through groove is formed in the end part of the water inlet valve, a T-shaped rod is connected in the through groove in a penetrating manner, the tail end of the T-shaped rod is connected with a bearing, the bearing is connected above the electric heating barrel, a torsion spring is connected above the bearing, and one end of the torsion spring is connected to the T-shaped rod.

Preferably, the T-shaped rod, the bearing and the torsion spring form a rotary reset structure, the length of the end part of the T-shaped rod is larger than the length of the inner part of the through groove, and the width of the inner part of the through groove is larger than the length of the end part of the T-shaped rod.

Preferably, a communication pipe is embedded below the electric heating barrel, the tail end of the communication pipe is connected with a filter box, and the filter box is connected to the bottom surface inside the support frame.

Preferably, one side of the filter box is connected with a sealing door, a filter screen is connected in the filter box, an active carbon plate is arranged below the filter screen, a water suction pipe is embedded in the other side of the filter box, and one end of the water suction pipe is connected with one end of the water pump.

Preferably, the filter screen and the activated carbon plate are all obliquely arranged in the filter box, and the minimum angles between the filter screen and the activated carbon plate and the filter box are all 60 degrees.

Compared with the prior art, the utility model has the beneficial effects that: through driving the threaded rod rotation, make annular scraper blade remove along the electrical heating bucket inner wall, and then scrape down the incrustation scale of adhesion on the electrical heating bucket inner wall, thereby be convenient for clear up the electrical heating bucket, pass through the groove after reset through T type pole tip, with the water intaking valve tip support at the butt joint pipe tip, and then be convenient for install the water intaking valve, need not use the ring flange butt joint, and pass multiunit bolt locking, after entering the rose box through hot water, before being taken out by the water pump, through filter screen and activated carbon sheet, with inside particulate matter filtering, and then prevent that the incrustation scale from being drawn into in the water pump, and in the inlet heating power pipe network, specific content is as follows:

1. when the water scale in the electric heating barrel needs to be cleaned, a servo motor is started, and drives a threaded rod to rotate through an output shaft to drive an annular scraping plate to move along the inner wall of the electric heating barrel, so that the water scale adhered on the inner wall of the electric heating barrel is scraped off, and the electric heating barrel is cleaned conveniently;

2. firstly, inserting a butt joint plate at the tail end of a water inlet valve into a butt joint pipe, manually rotating a T-shaped rod when the butt joint plate is not completely slid into a butt joint rail, and when the butt joint plate is completely slid into the butt joint rail, enabling the two groups of T-shaped rod ends to just pass through the two groups of through grooves, loosening the T-shaped rod and propping against the end part of the water inlet valve, fixedly installing the water inlet valve into the butt joint pipe without butting by using a flange plate and locking through a plurality of groups of bolts, so that the water inlet valve is convenient to install;

3. starting the water pump, the water pump pumps the hot water in the electric heating barrel into the filter tank, the hot water is respectively through filter screen and activated carbon sheet from top to bottom, filters out inside particulate matters, prevents to get into in the heating pipe network, leads to the inside contaminated of heating pipe network, when hot water gets into in the heating pipe network, is shunted to each part subassembly, and then supplies heat to high-low pressure bypass.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a heating rod according to the present utility model;

FIG. 3 is a schematic view of the structure of the threaded rod of the present utility model;

fig. 4 is an enlarged view of the structure of the portion a of the present utility model.

In the figure: 1. a support frame; 2. an electric heating barrel; 3. a barrel cover; 4. a control cabinet; 5. a heating rod; 6. a butt joint pipe; 7. a water inlet valve; 8. a water pump; 9. a bearing seat; 10. a threaded rod; 11. an internal thread seat; 12. an annular scraping plate; 13. an output shaft; 14. a seal ring; 15. a servo motor; 16. an abutting plate; 17. butt-joint rails; 18. a through groove; 19. a T-shaped rod; 20. a bearing; 21. a torsion spring; 22. a communicating pipe; 23. a filter box; 24. sealing the door; 25. a filter screen; 26. an activated carbon plate; 27. a water pumping pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: a heating apparatus for a high and low pressure bypass of a steam turbine, comprising: the electric heating barrel comprises a supporting frame 1, an electric heating barrel 2, a barrel cover 3 and a control cabinet 4;

the electric heating barrel 2 is connected with above the support frame 1, and electric heating barrel 2 is as the heat supply basis, electric heating barrel 2 one end is connected with bung 3, electric heating barrel 2 front portion is connected with switch board 4, electric heating barrel 2 inside is inlayed and is equipped with heating rod 5, electric heating barrel 2 top is inlayed and is equipped with butt joint pipe 6, butt joint pipe 6 end connection has water intaking valve 7, electric heating barrel 2 below is provided with water pump 8, bearing frame 9, connect on electric heating barrel 2 inner peripheral face, bearing frame 9 internal connection has threaded rod 10, threaded rod 10 goes up threaded connection and has internal thread seat 11, internal thread seat 11 connects on annular scraper blade 12 inner peripheral face, annular scraper blade 12 block connection is in electric heating barrel 2.

One end of the threaded rod 10 is connected with an output shaft 13, the output shaft 13 is connected in a sealing ring 14 in a penetrating way, one end of the output shaft is embedded on the inner wall of the electric heating barrel 2, one end of the output shaft 13 is connected with a servo motor 15, and the servo motor 15 is connected to one side of the electric heating barrel 2. The diameter of the outer peripheral surface of the annular scraping plate 12 is equal to that of the inner peripheral surface of the electric heating barrel 2, and the central axis of the annular scraping plate 12 and the central axis of the threaded rod 10 are not on the same horizontal line, so that the annular scraping plate 12 cannot rotate along with the rotation of the threaded rod 10, the annular scraping plate 12 moves along the inner wall of the electric heating barrel 2 by driving the threaded rod 10 to rotate, and then scale adhered on the inner wall of the electric heating barrel 2 is scraped, so that the electric heating barrel 2 is cleaned conveniently.

The lower part of the water inlet valve 7 is connected with a butt plate 16, one side of the butt plate 16 is connected in a butt rail 17 in a clamping way, the butt rail 17 is connected on the inner peripheral surface of the butt pipe 6, a through groove 18 is formed at the end part of the water inlet valve 7, a T-shaped rod 19 is connected in the through groove 18 in a penetrating way, the tail end of the T-shaped rod 19 is connected with a bearing 20, the bearing 20 is connected above the electric heating barrel 2, a torsion spring 21 is connected above the bearing 20, and one end of the torsion spring 21 is connected on the T-shaped rod 19. T-shaped rod 19, bearing 20 and torsional spring 21 constitute rotatory reset structure, and T-shaped rod 19 tip length is greater than the inside length of logical groove 18, and the inside width of logical groove 18 is greater than T-shaped rod 19 tip length, make T-shaped rod 19 rotatory back and reset after can passing logical groove 18, and support at water intaking valve 7 tip, reset after passing logical groove 18 through T-shaped rod 19 tip, support water intaking valve 7 tip at butt joint pipe 6 tip, and then be convenient for install water intaking valve 7, need not use the ring flange butt joint, and pass multiunit bolt locking.

The electric heating barrel 2 below is inlayed and is equipped with the communicating tube 22, and communicating tube 22 end-to-end connection has rose box 23, and rose box 23 connects on the inside bottom surface of support frame 1, through leading into rose box 23 with hot water in, can filter hot water. The filter box 23 one side is connected with sealing door 24, and the filter box 23 interconnect has filter screen 25, and the filter screen 25 below is provided with activated carbon sheet 26, and the filter box 23 opposite side inlays and is equipped with drinking-water pipe 27, and drinking-water pipe 27 one end is connected in 8 one ends of water pump. The filter screen 25 and the activated carbon plate 26 are all arranged in the filter tank 23 in an inclined mode, and the minimum angle between the filter screen 25 and the activated carbon plate 26 and the filter tank 23 is 60 degrees, so that particles can move along the filter screen 25 under the traction of gravity, filtered particles are gathered on one side, the concentrated cleaning is convenient, after hot water enters the filter tank 23, the filtered particles are filtered through the filter screen 25 and the activated carbon plate 26 before being pumped out by the water pump 8, and scale is prevented from being pumped into the water pump 8 and enters a heating power pipe network.

To sum up: as shown in fig. 1 to 4, when the heat supply device of the high-low pressure bypass of the steam turbine is used, the device is simply understood, firstly, the butt plate 16 at the tail end of the water inlet valve 7 is inserted into the butt pipe 6, the butt plate 16 slides into the butt rail 17 from top to bottom while being inserted, when the butt plate 16 does not slide into the butt rail 17, the end parts of the T-shaped rods 19 can pass through the through grooves 18 by manual rotation, when the butt plate 16 slides into the butt rail 17 completely, the two groups of the end parts of the T-shaped rods 19 just pass through the two groups of the through grooves 18, the T-shaped rods 19 are loosened, the T-shaped rods 19 automatically reset under the action of the torsion spring 21 and are propped against the end parts of the water inlet valve 7, the water inlet valve 7 is fixedly arranged in the butt pipe 6, the butt plate is not required to be butted by using a flange, and the butt plate is locked by a plurality of groups of bolts, so that the water inlet valve 7 is convenient to be arranged, and secondly, one end part of the heat supply pipe network is connected with the end part of the water pump 8, then, the water inlet valve 7 is opened, tap water is filled into the electric heating barrel 2, the heating rod 5 is started to heat tap water in the electric heating barrel 2, when heating is needed to be carried out on the high-low pressure bypass, the water pump 8 is started, the water pump 8 pumps hot water in the electric heating barrel 2 into the filter box 23, the hot water respectively passes through the filter screen 25 and the activated carbon plate 26 from top to bottom, internal particles are filtered out and prevented from entering the heating pipe network, the interior of the heating pipe network is prevented from being polluted, when the hot water enters the heating pipe network, the hot water is shunted to each component to further supply heat to the high-low pressure bypass, finally, when water scale in the electric heating barrel 2 is needed to be cleaned, the servo motor 15 is started, the servo motor 15 drives the threaded rod 10 to rotate through the output shaft 13, as the threaded rod 10 is in threaded connection with the annular scraping plate 12 through the internal thread seat 11, the annular scraping plate 12 is clamped in the electric heating barrel 2, the centers of the threaded rod 10 and the annular scraping plate 12 are not on the same horizontal line, and when the threaded rod 10 is rotated, the annular scraping plate 12 can be driven to move along the inner wall of the electric heating barrel 2 to scrape down the scale adhered on the inner wall of the electric heating barrel 2, so that the electric heating barrel 2 is cleaned conveniently, and the contents which are not described in detail in the specification belong to the prior art known to the expert in the field.

Although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A heating apparatus for a high and low pressure bypass of a steam turbine, comprising: the electric heating barrel comprises a supporting frame (1), an electric heating barrel (2), a barrel cover (3) and a control cabinet (4), and is characterized in that;

the electric heating barrel is characterized in that an electric heating barrel (2) is connected above the supporting frame (1), one end of the electric heating barrel (2) is connected with a barrel cover (3), the front part of the electric heating barrel (2) is connected with a control cabinet (4), a heating rod (5) is embedded in the electric heating barrel (2), a butt joint pipe (6) is embedded above the electric heating barrel (2), the end part of the butt joint pipe (6) is connected with a water inlet valve (7), and a water pump (8) is arranged below the electric heating barrel (2);

bearing frame (9) are connected on electrical heating bucket (2) inner peripheral face, bearing frame (9) internal connection has threaded rod (10), threaded connection has internal thread seat (11) on threaded rod (10), internal thread seat (11) are connected on annular scraper blade (12) inner peripheral face, annular scraper blade (12) block is connected in electrical heating bucket (2).

2. A heating apparatus for a high and low pressure bypass of a steam turbine as claimed in claim 1, wherein: one end of the threaded rod (10) is connected with an output shaft (13), the output shaft (13) is connected in the sealing ring (14) in a penetrating way, one end of the threaded rod is embedded on the inner wall of the electric heating barrel (2), one end of the output shaft (13) is connected with a servo motor (15), and the servo motor (15) is connected to one side of the electric heating barrel (2).

3. A heating apparatus for a high and low pressure bypass of a steam turbine as claimed in claim 1, wherein: the diameter of the outer peripheral surface of the annular scraping plate (12) is equal to that of the inner peripheral surface of the electric heating barrel (2), and the central axis of the annular scraping plate (12) and the central axis of the threaded rod (10) are not on the same horizontal line.

4. A heating apparatus for a high and low pressure bypass of a steam turbine as claimed in claim 1, wherein: an abutting plate (16) is connected below the water inlet valve (7), one side of the abutting plate (16) is connected in an abutting rail (17) in a clamping mode, and the abutting rail (17) is connected to the inner peripheral surface of the abutting pipe (6);

the water inlet valve is characterized by comprising a through groove (18) which is formed in the end part of the water inlet valve (7), a T-shaped rod (19) is connected in the through groove (18) in a penetrating way, a bearing (20) is connected at the tail end of the T-shaped rod (19), the bearing (20) is connected above the electric heating barrel (2), a torsion spring (21) is connected above the bearing (20), and one end of the torsion spring (21) is connected on the T-shaped rod (19).

5. The heating apparatus for high and low pressure bypass of steam turbine of claim 4, wherein: the T-shaped rod (19), the bearing (20) and the torsion spring (21) form a rotary reset structure, the length of the end part of the T-shaped rod (19) is greater than the inner length of the through groove (18), and the inner width of the through groove (18) is greater than the length of the end part of the T-shaped rod (19).

6. A heating apparatus for a high and low pressure bypass of a steam turbine as claimed in claim 1, wherein: the electric heating barrel (2) below is inlayed and is equipped with communication pipe (22), communication pipe (22) end-to-end connection has rose box (23), rose box (23) are connected on the inside bottom surface of support frame (1).

7. The heating apparatus for high and low pressure bypass of steam turbine of claim 6, wherein: the filter box (23) one side is connected with sealing door (24), filter box (23) internal connection has filter screen (25), filter screen (25) below is provided with active carbon plate (26), filter box (23) opposite side inlays and is equipped with drinking-water pipe (27), drinking-water pipe (27) one end is connected in water pump (8) one end.

8. The heating apparatus for high and low pressure bypass of steam turbine of claim 7, wherein: the filter screen (25) and the activated carbon plate (26) are all obliquely arranged in the filter box (23), and the minimum angles between the filter screen (25) and the activated carbon plate (26) and the filter box (23) are all 60 degrees.