CN219297198U

CN219297198U - Deoxidizing device

Info

Publication number: CN219297198U
Application number: CN202320276048.XU
Authority: CN
Inventors: 吴程; 许康; 武世龙
Original assignee: Xian Shaangu Power Co Ltd
Current assignee: Xian Shaangu Power Co Ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-07-04
Anticipated expiration: 2033-02-21

Abstract

The utility model provides an oxygen removal device, which is provided with an oxygen removal water tank, wherein the top of the oxygen removal water tank is communicated with an oxygen removal head, the middle of the oxygen removal head is provided with an auxiliary steam pipeline, and the auxiliary steam pipeline is communicated with the bottom of the oxygen removal head; and paving a reboiling steam pipeline at the bottom of the deoxidizing water tank. According to the utility model, two auxiliary steam pipelines are arranged in the deoxidizing head, so that the deoxidizing head can be heated by mixing with water medium in advance, the operation load of the main steam pipe is reduced, the steam inlet quantity adjusting capability under the high-strength limit working condition can be enhanced, and the deoxidizing efficiency of the deoxidizing device is ensured. In addition, a reboiling steam pipeline is arranged in the deoxidizing water tank, so that deoxidizing water in the deoxidizing water tank can be kept in a boiling state, the deoxidizing water is isolated from gas, the phenomenon of gas redissolution is avoided, and the deoxidizing quality of the deoxidizing device is ensured.

Description

Deoxidizing device

Technical Field

The utility model belongs to the field of boiler supporting equipment, and particularly relates to an oxygen removing device.

Background

The water medium such as desalted water and condensed water of the power station contains dissolved oxygen and other gases, and if the water medium is not treated before entering the boiler, other equipment such as a water supply pipeline, the boiler and a steam turbine can be corroded, so that the service life of the equipment is shortened. In order to solve the above problems, the power station is generally provided with an oxygen removal device before the boiler feed water pump for removing oxygen and other gases in the water medium and ensuring the quality of the boiler feed water. Meanwhile, the deoxidizing device can also play a role in heating the water supply and improving the water supply temperature.

The deaerator is generally composed of a deaerator head and a deaerator tank, and is configured to remove dissolved oxygen and other gases therein by heating an aqueous medium to a saturation temperature by introducing high-temperature steam.

In the technical scheme of the existing deoxidizing device, the deoxidizing device is generally formed by combining a deoxidizing head and a deoxidizing water tank. The high-temperature steam is introduced into the deoxidizing head, mixed with desalted water and condensed water for heating, and the water medium is heated to saturation temperature to separate oxygen and other gases dissolved in the water. The separated gas is discharged from the top end of the deoxidizing head, and deoxidized water after deoxidizing enters into the deoxidizing water tank.

In the prior art, only one steam pipeline is generally configured in the deoxidizing head, the steam quantity adjusting range is limited, and a larger design margin is required to be reserved for coping with high-strength limit working conditions. In addition, the steam is mainly used for deoxidizing in the deoxidizing head, no direct steam source exists in the deoxidizing water tank, and when the deoxidizing water tank runs under a low-strength working condition, deoxidizing water in the deoxidizing water tank cannot be kept in a boiling state, so that the deoxidizing water is not isolated from gas.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the deoxidizing device which can improve deoxidizing efficiency and ensure deoxidizing quality.

In order to solve the problems, the technical scheme adopted by the utility model comprises the following steps:

an oxygen removal device is provided with an oxygen removal water tank, an oxygen removal head is communicated with the top of the oxygen removal water tank, an auxiliary steam pipeline is arranged in the middle of the oxygen removal head, and a main steam pipeline is communicated with the bottom of the oxygen removal head;

and paving a reboiling steam pipeline at the bottom of the deoxidizing water tank.

Optionally, the auxiliary steam pipeline comprises a first auxiliary steam pipeline and a second auxiliary steam pipeline, and the first auxiliary steam pipeline and the second auxiliary steam pipeline are arranged in the middle cavity of the deoxidizing head from top to bottom in parallel.

Optionally, a water inlet pipe is arranged in the deoxidizing head above the auxiliary steam pipeline, and a plurality of spinning film pipes are arranged on the water inlet pipe at intervals; one end of the water inlet pipe is a first water inlet, and the other end of the water inlet pipe is a second water inlet.

Optionally, a water spraying grate is arranged in the deoxidizing head below the auxiliary steam pipeline.

Optionally, a filler layer is arranged above the joint of the main steam pipeline and the deoxidizing head.

Optionally, the pipe diameter of the main steam pipeline is larger than that of the auxiliary steam pipeline.

Optionally, the reboiling steam pipeline extends along the length direction of the bottom of the deoxidizing water tank, and is communicated with the reboiling steam pipeline upwards to the outside of the deoxidizing water tank to form a steam inlet.

Optionally, an exhaust port is arranged at the top of the deoxidizing head.

Optionally, a water outlet is arranged at the bottom of the deoxidizing water tank.

Optionally, an overflow pipe is further arranged in the deoxidizing water tank, and extends upwards into the upper middle position of the deoxidizing water tank; the overflow port extends downwards to the outside of the deoxidizing water tank.

According to the utility model, two auxiliary steam pipelines are arranged in the deoxidizing head, so that the deoxidizing head can be heated by mixing with water medium in advance, the operation load of the main steam pipe is reduced, the steam inlet quantity adjusting capability under the high-strength limit working condition can be enhanced, and the deoxidizing efficiency of the deoxidizing device is ensured. In addition, a reboiling steam pipeline is arranged in the deoxidizing water tank, so that deoxidizing water in the deoxidizing water tank can be kept in a boiling state, the deoxidizing water is isolated from gas, the phenomenon of gas redissolution is avoided, and the deoxidizing quality of the deoxidizing device is ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic diagram of the oxygen scavenging device of the present utility model;

the reference numerals in the figures are as follows:

1-deoxidizing head, 11-exhaust port, 12-water inlet pipe, 121-first water inlet, 122-rotary film pipe, 123-second water inlet, 13-first auxiliary steam pipeline, 14-second auxiliary steam pipeline, 15-water spraying grate, 16-filler layer and 17-main steam pipeline;

2-deoxidizing water tank, 21-reboiling steam pipeline, 22-steam inlet, 23-water outlet, 24-overflow pipe and 25-overflow port.

Detailed Description

The embodiments and conceptual designs and technical effects of the present disclosure will be clearly and completely described below with reference to the accompanying drawings and specific examples. The devices with the functions mentioned in the disclosure are all common or conventional devices in the field, and finished products can be purchased in the market; terms of orientation, such as "upper, lower, left, right, top, back, side" and the like, referred to in this disclosure are all defined in the direction facing the drawings of the specification.

Referring to fig. 1, the deoxidizing device provided by the utility model is provided with a deoxidizing water tank 2, the top of the deoxidizing water tank 2 is communicated with a deoxidizing head 1, for example, the deoxidizing water tank and the deoxidizing head 1 are combined into a whole through welding, an auxiliary steam pipeline is arranged in the middle of the deoxidizing head 1, and a main steam pipeline 17 is communicated with the bottom of the deoxidizing head 1; a reboiling steam pipeline 21 is laid at the bottom of the deoxygenated water tank 2. The auxiliary steam pipeline and the main steam pipeline 17 are arranged in the deoxidizing head 1 to jointly finish deoxidization, and the reboiling steam pipeline 21 is arranged in the deoxidizing water tank 2 to keep deoxidizing water in the deoxidizing water tank 2 in a boiling state, avoid redissolving gas and ensure deoxidizing quality of the deoxidizing device.

In the embodiment of the disclosure, the auxiliary steam pipeline comprises a first auxiliary steam pipeline 13 and a second auxiliary steam pipeline 14, and the first auxiliary steam pipeline 13 and the second auxiliary steam pipeline 14 are arranged in the middle cavity of the deaeration head 1 side by side from top to bottom. The two are arranged side by side from top to bottom, so that the water falling from the upper part can more comprehensively contact the steam from the auxiliary steam pipeline, and the first contact deoxygenation is completed.

In the embodiment of the disclosure, a water inlet pipe 12 is arranged in the deoxidizing head 1 above the auxiliary steam pipeline, and a plurality of spinning film pipes 122 are arranged on the water inlet pipe 12 at intervals; the inlet tube 12 has a first inlet 121 at one end and a second inlet 123 at the other end. For example, desalted water passes through the first water inlet 121, condensed water enters the rotary film tube 122 which is communicated with the inside of the deaeration head 1 through the second water inlet 123, and is sprayed into the cavity of the deaeration head 1 through the rotary film tube 122, and water medium falls freely under the action of gravity and is mixed and heated by steam sprayed from the first auxiliary steam tube 13 and the second auxiliary steam tube 14.

In the embodiment of the present disclosure, a shower grate 15 is provided in the oxygen removal head 1 below the auxiliary steam pipe. For example, one possible solution is to make the water-spraying grate 15 of several layers of staggered angular steel, where the water drops after coarse deoxidation by the auxiliary steam pipe are mixed and distributed twice, and drop in a uniform rain shape onto the packing layer 16 mounted thereunder

In the embodiment of the disclosure, a filler layer 16 is arranged above the joint of the main steam pipeline 17 and the deaeration head 1, uniform water drops from the water spray grate 15 are adhered on the filler layer 16 for a short time, and are mixed with high-temperature steam sprayed by the main steam pipeline 17 to be heated to a saturation temperature, so that oxygen and other gases are separated, and the separated gases are discharged through an exhaust port 11 at the top of the deaeration head 1.

In the embodiment of the disclosure, the pipe diameter of the main steam pipeline is larger than that of the auxiliary steam pipeline, so that the double deoxidization aims of coarse deoxidization and final deoxidization are fulfilled, the deoxidization effect is ensured, and the deoxidization efficiency is improved.

In the embodiment of the disclosure, the reboiling steam pipeline 21 is laid along the length direction of the bottom of the deoxidizing water tank 2, and is communicated with the reboiling steam pipeline 21 upwards to the outside of the deoxidizing water tank 2, and the reboiling steam pipeline 21 is configured in the deoxidizing water tank 2, so that deoxidizing water in the deoxidizing water tank 2 can be kept in a boiling state, thereby guaranteeing that deoxidizing water is isolated from gas, avoiding the phenomenon of gas redissolution, guaranteeing the deoxidizing quality of the deoxidizing device, and the steam inlet 22 is used for connecting an external steam pipeline with the reboiling steam pipeline 21, and high-temperature steam enters the reboiling steam pipeline 21 from the steam inlet 22 and enters the deoxidizing water tank 2 through holes distributed on the reboiling steam pipeline 21 to provide enough reboiling steam for the reboiling water tank.

In the embodiment of the present disclosure, an exhaust port 11 is provided at the top of the oxygen removal head 1 for exhausting oxygen and other gases separated after oxygen removal.

In the embodiment of the present disclosure, a water outlet 23 is provided at the bottom of the deoxygenated water tank 2 for collecting the water flow from which deoxygenated water is discharged.

In the embodiment of the present disclosure, an overflow pipe 24 is further provided in the deoxygenated water tank 2, and the overflow pipe 24 extends upward into the upper position in the deoxygenated water tank 2; the overflow port 25 extends downwards out of the deaerated water tank 2. When the water level is higher than the upper edge of the overflow pipe 24, high-level water enters the overflow pipe 24 and is discharged from the overflow port 25, so that the water level in the deoxidized water tank 2 is ensured to be maintained below a set safe water level.

Because the utility model is provided with two auxiliary steam pipelines for the deoxidizing device, the operation load of the main steam pipe is reduced, the adjusting capability of the steam inlet quantity of the deoxidizing device under the high-strength limit working condition can be enhanced, and the deoxidizing efficiency of the deoxidizing device is ensured. In addition, a reboiling steam pipeline is arranged in the deoxidizing water tank, so that deoxidizing water in the deoxidizing water tank can be kept in a boiling state, the deoxidizing water is isolated from gas, the phenomenon of gas redissolution is avoided, and the deoxidizing quality of the deoxidizing device is ensured.

The embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims

1. The deoxidizing device is provided with a deoxidizing water tank (2), wherein the top of the deoxidizing water tank (2) is communicated with a deoxidizing head (1), and the deoxidizing device is characterized in that an auxiliary steam pipeline is arranged in the middle of the deoxidizing head (1), and a main steam pipeline (17) is communicated with the bottom of the deoxidizing head (1);

and a reboiling steam pipeline (21) is paved at the bottom of the deoxidizing water tank (2).

2. The oxygen removal device of claim 1, wherein the auxiliary steam pipeline comprises a first auxiliary steam pipeline (13) and a second auxiliary steam pipeline (14), and the first auxiliary steam pipeline (13) and the second auxiliary steam pipeline (14) are arranged in the middle cavity of the oxygen removal head (1) side by side from top to bottom.

3. The deoxidizing device according to claim 1 or 2, wherein a water inlet pipe (12) is arranged in the deoxidizing head (1) above the auxiliary steam pipeline, and a plurality of spinning film pipes (122) are arranged on the water inlet pipe (12) at intervals;

one end of the water inlet pipe (12) is provided with a first water inlet (121), and the other end is provided with a second water inlet (123).

4. Oxygen scavenging device according to claim 1 or 2, characterized in that a water-drenching grate (15) is arranged in the oxygen scavenging head (1) below the auxiliary steam conduit.

5. Oxygen scavenging device according to claim 1 or 2, characterized in that a filler layer (16) is arranged above the junction of the main steam pipe (17) and the oxygen scavenging head (1).

6. The oxygen removal device of claim 1 or 2, wherein the primary steam conduit has a tube diameter greater than the tube diameter of the auxiliary steam conduit.

7. The deaeration device according to claim 1 or 2, characterized in that the reboiling steam pipe (21) extends along the length direction of the bottom of the deaeration water tank (2) and is communicated with the reboiling steam pipe (21) upwards to the outside of the deaeration water tank (2) to form a steam inlet (22).

8. Oxygen scavenging device according to claim 1 or 2, characterized in that an exhaust port (11) is provided in the top of the oxygen scavenging head (1).

9. Oxygen scavenging device according to claim 1 or 2, characterized in that a water outlet (23) is provided in the bottom of the oxygen scavenging water tank (2).

10. The deoxidizing device according to claim 1 or 2, characterized in that an overflow pipe (24) is also arranged in the deoxidizing water tank (2), and the overflow pipe (24) extends upwards into the middle upper position of the deoxidizing water tank (2);

the overflow port (25) extends downwards to the outside of the deoxidizing water tank (2).