CN216694645U

CN216694645U - Online back flushing device of pipe-pass circulating water cooler

Info

Publication number: CN216694645U
Application number: CN202123202911.7U
Authority: CN
Inventors: 郭金彪; 宫庆想; 师春杨; 危建民; 贾军纪; 何军; 代敏; 沈华明; 李爱林; 周伟华; 伍美文; 梅木春; 雷凡浩; 刘亭亭
Original assignee: Zhejiang Petroleum and Chemical Co Ltd
Current assignee: Zhejiang Petroleum and Chemical Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-07
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses an online back flushing device of a pipe pass circulating water cooler, which comprises a cooler for introducing circulating water, wherein the inlet end of the pipe pass of the cooler is connected with a forward water inlet pipe, the outlet end of the pipe pass of the cooler is connected with a forward water outlet pipe, the forward water inlet pipe is connected with a forward water inlet valve, the forward water outlet pipe is connected with a forward water outlet valve, the online back flushing device also comprises a back flushing water inlet pipe and a back flushing water outlet pipe, the upper end and the lower end of the back flushing water inlet pipe are respectively connected with the rear end of the forward water outlet valve and the front end of the forward water inlet valve, the upper end and the lower end of the back flushing water outlet pipe are respectively connected with the front end of the forward water outlet valve and the rear end of the forward water inlet valve, valves are respectively arranged on the back flushing water inlet pipe and the back flushing water outlet pipe, the structure is simple, the operation is convenient, the manufacturing cost is low, and the problem of pipe bundle blockage caused by solid impurities in the pipe pass circulating water cooler can be solved, and pollution and blockage to other circulating water coolers can be avoided.

Description

Online back flushing device of pipe-pass circulating water cooler

Technical Field

The utility model relates to a back flushing device, in particular to an online back flushing device of a pipe-pass circulating water cooler, belonging to the field of petrochemical industry.

Background

The circulating water cooler is widely applied to the field of petrochemical industry, and has the functions of exchanging heat with process materials and taking away unnecessary heat, so that the process materials are reduced to a proper temperature to meet production requirements.

When the tube pass circulating water cooler operates, because solid impurities such as silt, dust, debris and the like inevitably exist in an open circulating water system, the solid impurities and colloidal hydroxide, corrosion products, oil stains and the like in circulating water are deposited on the tube opening of the cooler and the inner surface of the tube bundle together, so that the heat exchange efficiency of the cooler is reduced, the production energy consumption is increased, and the tube bundle of the cooler is subjected to under-scale corrosion perforation in long-time operation, so that materials are leaked, and the whole circulating water system is polluted.

The solid impurities can be flushed out of the cooler by adopting back flushing, and are prevented from being deposited on the pipe opening of the cooler and the inner surface of the pipe bundle together with colloidal hydroxides, corrosion products, oil stains and the like. The existing backwashing either needs to cut off the cooler for off-line cleaning or discharges solid impurities into a circulating water system during on-line backwashing, and causes pollution and blockage to other circulating water coolers while causing impact on the circulating water system.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides the on-line back flushing device of the tube pass circulating water cooler, which has the technical characteristics of solving the problems of tube bundle blockage caused by solid impurities of the tube pass circulating water cooler, pollution and blockage of other circulating water coolers and the like.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the utility model provides an online back flushing device of tube side circulating water cooler, includes the cooler that lets in the circulating water, the entrance point of cooler tube side is connected with forward inlet tube, the exit end of cooler tube side is connected with forward outlet pipe, be connected with forward water intaking valve on the forward inlet tube, be connected with forward outlet valve on the forward outlet pipe, still include the back flush inlet tube, the back flush outlet pipe, the upper and lower end of back flush inlet tube is connected respectively in the rear end of forward outlet valve and the front end of forward water intaking valve, the upper and lower end of back flush outlet pipe is connected respectively in the front end of forward outlet valve and the rear end of forward water intaking valve, all be equipped with the valve on back flush inlet tube, the back flush outlet pipe.

Preferably, a reverse water inlet valve is arranged on the reverse washing water inlet pipe, and a reverse water outlet valve, a filter and a filter outlet valve are sequentially connected to the reverse washing water outlet pipe 7 from bottom to top.

Preferably, the water cooler is provided in plurality, and the plurality of coolers are connected in series.

Preferably, a drain pipe is connected to the back flushing water outlet pipe at the lower end of the back water outlet valve, and a drain valve is arranged on the drain pipe.

Has the advantages that: simple structure, convenient operation, low in manufacturing cost can solve the tube bank jam problem that tube side circulating water cooler solid impurity arouses, also can avoid causing pollution and jam to other circulating water coolers.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following examples.

In the description of the present invention, it should be noted that the terms "front", "back", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the on-line back flushing device of a tube pass circulating water cooler in the embodiment includes a cooler 5 for introducing circulating water, a forward water inlet tube 1 is connected to an inlet end of a tube pass of the cooler 5, a forward water outlet tube 2 is connected to an outlet end of the tube pass of the cooler 5, a forward water inlet valve 3 is connected to the forward water inlet tube 1, a forward water outlet valve 4 is connected to the forward water outlet tube 2, the on-line back flushing device further includes a back flushing water inlet tube 6 and a back flushing water outlet tube 7, an upper end and a lower end of the back flushing water inlet tube 6 are respectively connected to a rear end of the forward water outlet valve 4 and a front end of the forward water inlet valve 3, an upper end and a lower end of the back flushing water outlet tube 7 are respectively connected to a front end of the forward water outlet valve 4 and a rear end of the forward water inlet valve 3, and the back flushing water inlet tube 6 and the back flushing water inlet tube 7 are respectively connected to a front end of the forward water outlet valve 4 and a rear end of the forward water inlet valve 3, The back flushing water outlet pipes 7 are all provided with valves.

In a preferred embodiment, a reverse water inlet valve 8 is arranged on the reverse washing water inlet pipe 6, and a reverse water outlet valve 9, a filter 10 and a filter outlet valve 11 are sequentially connected to the reverse washing water outlet pipe 7 from bottom to top, so that the control operation is facilitated.

In a preferred embodiment, the water cooler 5 is provided in plurality, and a plurality of coolers 5 are used in series.

In a preferred embodiment, a drain pipe 12 is connected to the back washing outlet pipe 7 at the lower end of the back outlet valve 9, and a drain valve 13 is arranged on the drain pipe 12 to facilitate discharging the back washing water out of the system.

The working process is as follows: when the water purifier is in a normal working state, the forward water inlet valve 3 and the forward water outlet valve 4 are in an open state, and the reverse water inlet valve 8, the reverse water outlet valve 9, the filter outlet valve 11 and the drain valve 13 are in a closed state; when the reverse washing is carried out, the forward water inlet valve 3 and the forward water outlet valve 4 are closed, the reverse water inlet valve 8, the reverse water outlet valve 9 and the filter outlet valve 11 are opened, then the reverse washing water enters the pipe pass of the circulating water cooler 5 through the forward water inlet pipe 1, the reverse washing water inlet pipe 6, the reverse water inlet valve 8 and the forward water outlet pipe 2, then enters the circulating water system through the forward water inlet pipe 1, the reverse washing water outlet pipe 7, the reverse water outlet valve 9, the filter 10, the filter outlet valve 11 and the forward water outlet pipe 2, the washing is completed through repeated circulation, when the filter 10 is blocked, the reverse water outlet valve 9 and the filter outlet valve 11 are closed, the drain valve 13 is opened, the reverse washing water is discharged out of the system, and the filter 10 is detached for replacement or cleaned at the same time; when the back flushing is finished, the back water inlet valve 8, the back water outlet valve 9 and the filter outlet valve 11 are closed, the forward water inlet valve 3 and the forward water outlet valve 4 are opened, and the normal working state is recovered. The time of the back flushing can be determined according to the heat exchange effect, and the back flushing can be performed regularly according to the actual production requirement.

Finally, it should be noted that the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.

Claims

1. The utility model provides an online back flushing device of pipe side circulating water cooler, its characterized in that, including cooler (5) that lets in the circulating water, the entrance point of cooler (5) pipe side is connected with forward inlet tube (1), the exit end of cooler (5) pipe side is connected with forward outlet pipe (2), be connected with forward water intaking valve (3) on forward inlet tube (1), be connected with forward outlet valve (4) on forward outlet pipe (2), still include back flush inlet tube (6), back flush outlet pipe (7), the upper and lower end of back flush inlet tube (6) is connected respectively in the rear end of forward outlet valve (4) and the front end of forward water intaking valve (3), the upper and lower end of back flush outlet pipe (7) is connected respectively in the front end of forward outlet valve (4) and the rear end of forward outlet valve (3), back flush inlet tube (6) water intaking valve and back flush inlet valve (3) are connected to the upper and lower end of back flush outlet pipe (7), back flush inlet tube (6), The back flushing water outlet pipes (7) are provided with valves.

2. The on-line back flushing device of the pipe-pass circulating water cooler of claim 1, characterized in that a back water inlet valve (8) is arranged on the back flushing water inlet pipe (6), and a back water outlet valve (9), a filter (10) and a filter outlet valve (11) are sequentially connected on the back flushing water outlet pipe (7) from bottom to top.

3. The on-line back flushing device of the circulating water cooler in pipe pass as claimed in claim 1 or 2, characterized in that the cooler (5) is provided in plurality, and a plurality of coolers (5) are connected in series.

4. The on-line back flushing device of the pipe-line circulating water cooler of claim 2, characterized in that a drain pipe (12) is connected to the back flushing outlet pipe (7) at the lower end of the back outlet valve (9), and a drain valve (13) is arranged on the drain pipe (12).