CN210343443U

CN210343443U - Steam turbine low-level water seal barrel device

Info

Publication number: CN210343443U
Application number: CN201921316541.XU
Authority: CN
Inventors: 赵明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-04-17
Anticipated expiration: 2029-08-14

Abstract

The utility model discloses a steam turbine low level water seal section of thick bamboo device, including urceolus and inner tube, the inside of urceolus is arranged in to the bottom of inner tube, and the condenser intercommunication in the upper end of inner tube and the outside, the bottom outside welded fastening of inner tube has the dustcoat, the bottom and the urceolus bottom of dustcoat are connected fixedly, the inlet opening has been seted up to the bottom outer lane of dustcoat, the inlet opening is a plurality of, and the even distribution in the bottom outer lane of dustcoat of a plurality of inlet openings, the left side upper end of urceolus is connected with the back flow, be connected with the moisturizing pipe on the urceolus of back flow lower extreme. The utility model discloses a be fixed with the dustcoat between the bottom outer lane of inner tube and urceolus bottom, make in the urceolus water only can follow the inlet opening and get into dustcoat and inner tube, when condenser intake is too fast and make the interior water level of urceolus descend, because the unable air that gets into in the upper end of dustcoat inboard, then can make in the air in the urceolus can't get into the condenser through the inner tube, the effectual condenser equipment that has protected.

Description

Steam turbine low-level water seal barrel device

Technical Field

The utility model relates to a water seal arrangement technical field specifically is a steam turbine low level water seal section of thick bamboo device.

Background

At present, a water feed pump of a large-scale thermal power plant is usually sealed by adopting a labyrinth seal, sealing water of the water feed pump comes from condensed water heated by a shaft seal heater, and sealing water return water is divided into two paths: one path of pressure backwater enters the front of a filter screen at the inlet of a preposed pump of the pneumatic feed pump; the other path of non-pressure return water ditch or enters a condenser drainage flash tank through a water seal device, the water seal device balances the pressure difference between a sealed water return pipeline (generally atmospheric pressure) of the water-feeding pump and the condenser by utilizing the height difference of water columns in the water seal cylinder, and the condenser is isolated from the outside air by utilizing the water columns in the water seal cylinder so as to prevent air from leaking into the condenser vacuum system.

Because the pressure of the condenser during operation is not always fixed, the water return speed of the water return pipe also changes, and if the pressure of the condenser is too low or the water supply speed is reduced, the water amount entering the condenser is excessive and enters the water in the water seal cylinder, the water in the water seal cylinder is too little until the bottom of the inner cylinder, and air may enter the condenser. Therefore, we propose a steam turbine low-level water seal cylinder device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam turbine low level water seal section of thick bamboo device, through being fixed with the dustcoat between the bottom outer lane of inner tube and urceolus bottom, make in the urceolus water only can follow the inlet opening and get into dustcoat and inner tube in, when condenser intake is too fast and makes the urceolus in the water level descend, because the unable air that gets into in the upper end of dustcoat inboard, then can make in the air in the urceolus can't get into the condenser through the inner tube in, the condenser equipment has effectually been protected, the problem that provides among the background art has been solved.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a steam turbine low level water seal pot device, includes urceolus and inner tube, the inside of urceolus is arranged in to the bottom of inner tube, and the condenser intercommunication in the upper end of inner tube and the outside, the bottom outside welded fastening of inner tube has the dustcoat, the bottom and the urceolus bottom of dustcoat are connected fixedly, the inlet opening has been seted up to the bottom outer lane of dustcoat, the inlet opening is a plurality of, and the even distribution of a plurality of inlet openings is in the bottom outer lane of dustcoat, the left side upper end of urceolus is connected with the back flow, be connected with the moisturizing pipe on the urceolus of back flow lower extreme, back flow and moisturizing pipe all communicate with the urceolus is inside, and install the solenoid valve on the moisturizing pipe, be.

As a preferred embodiment of the present invention, a vent pipe is connected to the left side of the upper end of the outer tub, and the vent pipe is communicated with the inside of the outer tub.

As a preferred embodiment of the present invention, a drain pipe is connected to the upper end of the right side of the outer tub, and the drain pipe is communicated with the inside of the outer tub.

As a preferred embodiment of the utility model, level sensor's data output end is connected with control relay's data input end, control relay's data output end is connected with the data input end of solenoid valve.

As a preferred embodiment of the present invention, the model of the liquid level sensor is HCL300, and the model of the control relay is DF-96D.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a steam turbine low level water seal section of thick bamboo device is through being fixed with the dustcoat between the bottom outer lane of inner tube and urceolus bottom, makes in the urceolus water only can follow the inlet opening and get into dustcoat and inner tube, when condenser intake is too fast and make the urceolus in the water level descend, because the unable air that gets into in the upper end of dustcoat inboard, then can make in the urceolus air can't get into the condenser through the inner tube, the effectual condenser equipment that has protected.

2. The utility model discloses a steam turbine low level water seal section of thick bamboo device is connected with the breather pipe through the upper end left side that makes the urceolus, and breather pipe and the inside intercommunication of urceolus, at water seal section of thick bamboo during operation, the breather pipe guarantees urceolus and outside air intercommunication, guarantees that atmospheric pressure can go into the interior section of thick bamboo and get into in the condenser with the water pressure in the urceolus smoothly.

3. The utility model discloses a steam turbine low-order water seal section of thick bamboo device is connected with the drain pipe through the right side upper end that makes the urceolus, and drain pipe and the inside intercommunication of urceolus, when the back flow supplies water too fast or condenser intake speed slows down, unnecessary water can conveniently discharge into the trench through the drain pipe.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of the overall structure of the low-level water seal cartridge device of the steam turbine of the present invention;

fig. 2 is a schematic diagram of a circuit connection structure of the low-level water seal cartridge device of the steam turbine of the present invention.

In the figure: 1. an outer cylinder; 2. an inner barrel; 3. a breather pipe; 4. a return pipe; 5. an electromagnetic valve; 6. a water replenishing pipe; 7. a housing; 8. a drain pipe; 9. a liquid level sensor; 10. a water inlet hole; 11. and controlling the relay.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a steam turbine low level water seal pot device, includes urceolus 1 and inner tube 2, the inside of urceolus 1 is arranged in to the bottom of inner tube 2, and the condenser intercommunication in the upper end and the outside of inner tube 2, the bottom outside welded fastening of inner tube 2 has dustcoat 7, the bottom and the urceolus 1 bottom of dustcoat 7 are connected fixedly, inlet opening 10 has been seted up to the bottom outer lane of dustcoat 7, inlet opening 10 is a plurality ofly, and the even distribution of a plurality of inlet openings 10 is in the bottom outer lane of dustcoat 7, the left side upper end of urceolus 1 is connected with back flow 4, be connected with moisturizing pipe 6 on the urceolus 1 of back flow 4 lower extreme, back flow 4 and moisturizing pipe 6 all with the inside intercommunication of urceolus 1, and install solenoid valve 5 on the moisturizing pipe 6, be fixed with level sensor 9 on the right side lower.

In the embodiment (please refer to fig. 1 and 2), the outer cover 7 is fixed between the outer ring at the bottom of the inner cylinder 2 and the bottom of the outer cylinder 1, so that water in the outer cylinder 1 can only enter the outer cover 7 and the inner cylinder 2 from the water inlet 10, and when the water level in the outer cylinder 1 drops due to too fast water inlet of the condenser, air cannot enter the condenser through the inner cylinder 2 because the upper end of the inner side of the outer cover 7 cannot enter the condenser, thereby effectively protecting the condenser equipment.

Wherein, the upper end left side of urceolus 1 is connected with breather pipe 3, breather pipe 3 and urceolus 1 inside intercommunication.

In the embodiment (see fig. 1), the left side of the upper end of the outer cylinder 1 is connected with the vent pipe 3, and the vent pipe 3 is communicated with the inside of the outer cylinder 1, so that when the water seal cylinder works, the vent pipe 3 ensures that the outer cylinder 1 is communicated with outside air, and the atmospheric pressure can smoothly press water in the outer cylinder 1 into the inner cylinder 2 and enter the condenser.

Wherein, the right side upper end of urceolus 1 is connected with drain pipe 8, drain pipe 8 and the inside intercommunication of urceolus 1.

In the embodiment (see fig. 1), the drain pipe 8 is connected to the upper end of the right side of the outer cylinder 1, and the drain pipe 8 is communicated with the inside of the outer cylinder 1, so that when the water supply of the return pipe 4 is too fast or the water inlet speed of the condenser is slow, the excess water can be conveniently discharged into the trench through the drain pipe 8.

The data output end of the liquid level sensor 9 is connected with the data input end of the control relay 11, and the data output end of the control relay 11 is connected with the data input end of the electromagnetic valve 5.

The model of the liquid level sensor 9 is HCL300, and the model of the control relay 11 is DF-96D.

It should be noted that the utility model relates to a low level water seal cylinder device of a steam turbine, which comprises an outer cylinder 1, an inner cylinder 2, a vent pipe 3, a return pipe 4, a solenoid valve 5, a water replenishing pipe 6, an outer cover 7, a drain pipe 8, a liquid level sensor 9, a water inlet 10 and a control relay 11, wherein the components are all universal standard components or components known by technicians in the field, the structure and the principle of the low level water seal cylinder device are known by technicians in the field through technical manuals or conventional experimental methods, when in operation, the return pipe 4 is connected with a sealed water return pipeline, the water replenishing pipe 6 is connected with water supply equipment, the drain pipe 8 is connected with a trench, the upper end of the inner cylinder 2 is communicated with a condenser, all the equipment are connected with power supply equipment, because of the negative pressure of the condenser, water entering the outer cylinder 1 through the return pipe 4 enters the outer cover 7 through the water inlet 10, and then is pressed, the breather pipe 3 guarantees that urceolus 1 is equal with external atmospheric pressure, when the speed of intaking of condenser is less than to supply water speed, the liquid level in the urceolus 1 descends, but because the unable air that gets into in the inside upper end of dustcoat 7, then can not get into the air in the inner tube 2, level sensor 9 detects the liquid level decline simultaneously, last by control relay 11 control solenoid valve 5 open, and then supply water to the water level arrival appointed height in for the urceolus 1 and then close solenoid valve 5 again, when the speed of supplying water is greater than condenser water speed, unnecessary water is in the trench through drain pipe 8 drains into.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a steam turbine low level water seal section of thick bamboo device, includes urceolus (1) and inner tube (2), its characterized in that: the bottom of the inner cylinder (2) is arranged in the outer cylinder (1), the upper end of the inner cylinder (2) is communicated with a condenser on the outer side, an outer cover (7) is welded and fixed on the outer side of the bottom of the inner cylinder (2), the bottom of the outer cover (7) is fixedly connected with the bottom of the outer cylinder (1), the outer ring at the bottom of the outer cover (7) is provided with a plurality of water inlet holes (10), the number of the water inlet holes (10) is more than one, and a plurality of water inlet holes (10) are uniformly distributed on the outer ring of the bottom of the outer cover (7), the upper end of the left side of the outer cylinder (1) is connected with a return pipe (4), the outer cylinder (1) at the lower end of the return pipe (4) is connected with a water replenishing pipe (6), the return pipe (4) and the water replenishing pipe (6) are both communicated with the inside of the outer cylinder (1), and the water replenishing pipe (6) is provided with an electromagnetic valve (5), and the inner wall of the lower end of the right side of the outer cylinder (1) is fixed with a liquid level sensor (9).

2. The low-level water seal cylinder device of the steam turbine as claimed in claim 1, wherein: the upper end left side of urceolus (1) is connected with breather pipe (3), breather pipe (3) and urceolus (1) inside intercommunication.

3. The low-level water seal cylinder device of the steam turbine as claimed in claim 1, wherein: the water draining pipe (8) is connected to the upper end of the right side of the outer barrel (1), and the water draining pipe (8) is communicated with the interior of the outer barrel (1).

4. The low-level water seal cylinder device of the steam turbine as claimed in claim 1, wherein: the data output end of the liquid level sensor (9) is connected with the data input end of the control relay (11), and the data output end of the control relay (11) is connected with the data input end of the electromagnetic valve (5).

5. The low-level water seal cylinder device of the steam turbine as claimed in claim 4, wherein: the model of the liquid level sensor (9) is HCL300, and the model of the control relay (11) is DF-96D.