CN217872953U

CN217872953U - Water seal assembly

Info

Publication number: CN217872953U
Application number: CN202222063943.1U
Authority: CN
Inventors: 郭结实; 李党超; 王金富
Original assignee: Shandong Aoxiang Power Engineering Design Consulting Co ltd
Current assignee: Shandong Aoxiang Power Engineering Design Consulting Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-11-22
Anticipated expiration: 2032-08-05

Abstract

A water seal assembly is used between a turbine steam seal heater and a condenser for draining water and is provided with a high-pressure side inlet and a low-pressure side outlet; it is characterized in that: the high-pressure side inlet and the low-pressure side outlet are respectively arranged at the upper parts of the first outer pipe and the second outer pipe; the upper end and the lower end of the first outer pipe are respectively sealed by a top plate and a bottom plate, a first inner pipe is arranged in the first outer pipe, the bottom end of the first inner pipe is open, and a space is arranged between the bottom pipe and the first inner pipe; the upper end of the first inner pipe penetrates through the top plate of the first outer pipe, extends upwards and is closed at the end part, and a water injection pipe is communicated with the inner cavity of the first inner pipe; a second inner pipe is arranged in the second outer pipe, the upper end of the second inner pipe penetrates through the top plate of the second outer pipe and extends upwards, and the end part of the second inner pipe is communicated with the first inner pipe through a middle connecting pipe; the middle connecting pipe is provided with a pressure gauge. The structure is simplified, the differential pressure is simple and convenient to calculate, and the operation personnel can understand and operate conveniently.

Description

Water seal assembly

Technical Field

The utility model relates to a water seal technical field specifically is a water seal subassembly of using between turbine gland sealing heater drainage to condenser.

Background

In power plants and factories, the pressure difference and the liquid level height of two different containers (or spaces) need to be maintained at certain values, the steam seal heater of a steam turbine drains water to a condenser, the steam seal heater is in a micro-negative pressure state during operation and has about 10m water column with the vacuum pressure difference of the condenser, and a water seal assembly needs to be added because the water seal has to generate resistance higher than 10m water column during operation so as to ensure smooth drainage and prevent air leakage.

The existing water seal assemblies are various in forms, most of the existing water seal assemblies are complex in structure (are mutually nested), and some pipelines have more elbows, so that the existing water seal assemblies are not beneficial to understanding and operation of operators. If the installation operation is wrong, the problem that the pipeline is punctured easily occurs after the operation, and the production safety is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a water seal assembly has simplified the structure to also make the calculation of pressure differential simple and convenient, be convenient for understand the operation personnel understand and the operation.

The utility model provides a technical scheme that its technical problem adopted is: a water seal assembly is provided with a high-pressure side inlet and a low-pressure side outlet; it is characterized in that: the high-pressure side inlet is arranged at the upper part of the first outer pipe, and the low-pressure side outlet is arranged at the upper part of the second outer pipe;

the upper end and the lower end of the first outer pipe are respectively sealed by a top plate and a bottom plate, a first inner pipe is arranged in the first outer pipe, a space is arranged between the outer wall of the first inner pipe and the inner wall of the first outer pipe to form an annular cavity, the bottom end of the first inner pipe is open, and a space is arranged between the bottom end of the first inner pipe and the bottom plate of the first outer pipe; the upper end of the first inner pipe penetrates through the top plate of the first outer pipe, extends upwards and is closed at the end part, and a water injection pipe provided with a water injection valve is communicated with the inner cavity of the first inner pipe;

the upper end and the lower end of the second outer pipe are respectively sealed by a top plate and a bottom plate, a second inner pipe is arranged in the second outer pipe, a space is formed between the outer wall of the second inner pipe and the inner wall of the second outer pipe to form an annular cavity, the bottom end of the second inner pipe is open, and a space is formed between the bottom end of the second inner pipe and the bottom plate of the second outer pipe; the upper end of the second inner pipe penetrates through the top plate of the second outer pipe and extends upwards, and the end part of the second inner pipe is communicated with the first inner pipe through a middle connecting pipe;

and a pressure gauge is arranged on the middle connecting pipe.

As a further technical scheme of the water seal assembly: and the high-pressure side inlet and the low-pressure side outlet are coaxially arranged.

And further: a first limiting clamping block for limiting the first inner pipe is arranged between the first inner pipe and the first outer pipe; a second limiting clamping block for limiting the second inner tube is arranged between the second inner tube and the second outer tube.

Further: the first limiting clamping block is arranged at the lower end of the first inner pipe; the second limiting clamping block is arranged at the lower end of the second inner pipe.

Further: the inner diameters and the heights of the first outer pipe and the second outer pipe are equal, and the upper end of the first outer pipe and the upper end of the second outer pipe are positioned on the same horizontal plane; the lower ends of the two outer pipes are also positioned on the same horizontal plane.

Further: the middle connecting pipe is horizontally arranged.

And further: the middle connecting pipe and the second inner pipe are connected into a whole in a fillet transition way.

And further: the inner diameter of the middle connecting pipe is smaller than the inner diameters of the first inner pipe and the second inner pipe.

Further: the bottom plates of the first outer pipe and the second outer pipe are an integral bottom plate, and a first water discharge pipe with a water discharge valve and a second water discharge pipe with a water discharge valve are connected to the bottom plate and are respectively communicated with the inner cavity of the first outer pipe.

The beneficial effects of the utility model are that: the water seal assembly simplifies the structure while realizing the water seal effect, thereby simplifying the calculation of the pressure difference, and in addition, the water seal assembly can be suitable for more pressure difference adjusting scenes by the serial connection of a plurality of assemblies or the flexible combination arrangement of the assemblies with different specifications, and the communication and separation structures are clear and definite; the understanding and the operation of operators are convenient to understand, and the operation safety is guaranteed; in addition, no mechanical transmission and electrical elements exist, so that no abrasion, no jam, no complex debugging and convenient maintenance are needed.

Drawings

Fig. 1 is a schematic structural view (front view-sectional view) of a preferred embodiment of the present invention;

FIG. 2 is a left side view (in cross-section) of FIG. 1;

the figure is as follows: the water injection device comprises a high-pressure side inlet 1, a low-pressure side outlet 2, a first outer pipe 3, a top plate 31, a second outer pipe 4, a top plate 41, a bottom plate 5, a first inner pipe 6, a water injection pipe 7, a water injection valve 71, a second inner pipe 8, an intermediate connecting pipe 9, a pressure gauge 10, a first limiting clamping block 11, a second limiting clamping block 12, a first water drain pipe 13, a water drain valve 14, a second water drain pipe 15 and a water drain valve 16.

Detailed Description

As shown in fig. 1 and 2, the water seal assembly includes a high pressure side inlet 1 and a low pressure side outlet 2; the high-pressure side inlet 1 is arranged at the upper part of the first outer pipe 3, and the low-pressure side outlet 2 is arranged at the upper part of the second outer pipe 4; in this embodiment, the high-pressure side inlet 1 and the low-pressure side outlet 2 are coaxially arranged.

The upper end and the lower end of the first outer pipe 3 are respectively sealed by a top plate 31 and a bottom plate 5, a first inner pipe 6 is arranged in the first outer pipe 3, a space is arranged between the outer wall of the first inner pipe 6 and the inner wall of the first outer pipe 3 to form an annular cavity, the bottom end of the first inner pipe 6 is opened, and a space is arranged between the bottom end of the first inner pipe 6 and the bottom plate of the first outer pipe 3; the upper end of the first inner tube 6 passes through the top plate 31 of the first outer tube 3 and extends upward and is closed at the end, and a water injection tube 7 provided with a water injection valve 71 is communicated with the inner cavity of the first inner tube 6.

The upper end and the lower end of the second outer pipe 4 are respectively sealed by a top plate 41 and a bottom plate 5, a second inner pipe 8 is arranged in the second outer pipe 4, a space is arranged between the outer wall of the second inner pipe 8 and the inner wall of the second outer pipe 4 to form an annular cavity, the bottom end of the second inner pipe 8 is open, and a space is arranged between the bottom plate of the second outer pipe 4 and the bottom plate of the second inner pipe 8; the upper end of the second inner tube 8 passes through the top plate 41 of the second outer tube 4 and extends upwardly and communicates at the end with the first inner tube 6 by means of an intermediate connecting tube 9. The intermediate connection pipe 9 is provided with a pressure gauge 10.

In this embodiment, the intermediate connection pipe 9 is horizontally disposed in order to further simplify the structure and facilitate calculation of the pressure difference. In order to make drainage smoother, the middle connecting pipe 9 and the second inner pipe 8 are connected into a whole through fillet transition.

In addition, the inner diameter of the intermediate connecting pipe 9 is smaller than the inner diameters of the first inner pipe 6 and the second inner pipe 8, which is beneficial to draining water.

In addition, a first limiting clamping block 11 for limiting the first inner tube 6 is arranged between the first inner tube 6 and the first outer tube 3; a second limiting clamping block 12 for limiting the second inner tube 8 is arranged between the second inner tube 8 and the second outer tube 4. The two limit stops respectively position the first inner tube 6 at the center of the first outer tube 3 and the second inner tube 8 at the center of the second outer tube 4. Two limit stop respectively with corresponding outer tube fixed connection together, not with inner tube fixed connection, fixed connection here is preferably the welding, and is less to inside water column influence, and easy to assemble maintains.

In this embodiment, the first limiting latch 11 is disposed at the lower end of the first inner tube 6; the second limiting clamping block 12 is arranged at the lower end of the second inner tube 8. The lower end of the device is further convenient to install and maintain.

In this embodiment, the inner diameters and heights of the first outer tube 3 and the second outer tube 4 are equal, the upper end of the first outer tube 3 and the upper end of the second outer tube 4 are located on the same horizontal plane, and the heights of the two top plates 31 and 41 are equal; the lower ends of the two outer pipes are also located on the same horizontal plane, specifically, the bottom plate 5 of the first outer pipe 3 and the second outer pipe 4 in this embodiment is an integral bottom plate, and the bottom plate 5 is connected with a first water discharge pipe 13 with a water discharge valve 14 and a second water discharge pipe 15 with a water discharge valve 16, which are respectively communicated with the inner cavity of the first outer pipe 3 and the inner cavity of the second outer pipe 4.

Before the water seal assembly is used, water is respectively injected into the first inner pipe 6 and the second outer pipe 4, so that the liquid level of the first inner pipe 6 is higher than that of the first outer pipe 3, the liquid level of the second outer pipe 4 is higher than that of the second inner pipe 8, and air is sealed between the liquid level of the first inner pipe 6 and the liquid level of the second inner pipe 8 to form an air column; the level of the liquid can also be adjusted by the water drain valves 14 and 16. The pressure difference between the high-pressure side inlet 1 and the low-pressure side outlet 2 is the sum of the water column height formed by the liquid level difference H1 of the first inner pipe 6 and the first outer pipe 3 and the liquid level difference H2 of the second outer pipe 4 and the first inner pipe 8. The assembly can be flexibly arranged according to the pressure difference of the two containers, and only the height of the two liquid level differences in the drawing needs to be adjusted, or the number of groups is increased (the front group of outlets is butted with the rear group of inlets); the communicating and separating structures are clear and definite; the understanding and the operation of operators are convenient to understand, and the operation safety is ensured.

The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so as to be known and read by people skilled in the art, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, proportion relation change or size adjustment still falls within the scope which can be covered by the technical content disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "X", "Y", "Z", "up", "down", "front", "back" and "middle" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The above embodiments are merely illustrative of the principles and functions of the present invention, and not restrictive. The present invention can be modified in many ways without departing from the spirit and scope of the present invention, and those skilled in the art can modify or change the embodiments described above without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A water seal assembly is provided with a high-pressure side inlet and a low-pressure side outlet; it is characterized in that: the high-pressure side inlet is arranged at the upper part of the first outer pipe, and the low-pressure side outlet is arranged at the upper part of the second outer pipe;

the upper end and the lower end of the second outer pipe are respectively sealed by a top plate and a bottom plate, a second inner pipe is arranged in the second outer pipe, a space is arranged between the outer wall of the second inner pipe and the inner wall of the second outer pipe to form an annular cavity, the bottom end of the second inner pipe is open, and a space is arranged between the bottom end of the second inner pipe and the bottom plate of the second outer pipe; the upper end of the second inner pipe penetrates through the top plate of the second outer pipe and extends upwards, and the end part of the second inner pipe is communicated with the first inner pipe through a middle connecting pipe;

and a pressure gauge is arranged on the middle connecting pipe.

2. The water seal assembly of claim 1, wherein: and the high-pressure side inlet and the low-pressure side outlet are coaxially arranged.

3. The water seal assembly of claim 1, wherein: a first limiting clamping block for limiting the first inner pipe is arranged between the first inner pipe and the first outer pipe; a second limiting clamping block for limiting the second inner tube is arranged between the second inner tube and the second outer tube.

4. The water seal assembly according to claim 3, wherein: the first limiting clamping block is arranged at the lower end of the first inner pipe; the second limiting clamping block is arranged at the lower end of the second inner pipe.

5. The water seal assembly according to claim 2, wherein: the inner diameters and the heights of the first outer pipe and the second outer pipe are equal, and the upper end of the first outer pipe and the upper end of the second outer pipe are positioned on the same horizontal plane; the lower ends of the two outer pipes are also positioned on the same horizontal plane.

6. The water seal assembly according to claim 1, wherein: the middle connecting pipe is horizontally arranged.

7. The water seal assembly according to claim 1 or 6, wherein: the middle connecting pipe and the second inner pipe are connected into a whole in a fillet transition way.

8. The water seal assembly of claim 7, wherein: the inner diameter of the middle connecting pipe is smaller than the inner diameters of the first inner pipe and the second inner pipe.

9. The water seal assembly of claim 1, wherein: the bottom plates of the first outer pipe and the second outer pipe are an integral bottom plate, and a first water discharge pipe with a water discharge valve and a second water discharge pipe with a water discharge valve are connected to the bottom plate and are respectively communicated with the inner cavity of the first outer pipe.